CN218934687U - Linkage control circuit and pump switch cabinet - Google Patents
Linkage control circuit and pump switch cabinet Download PDFInfo
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- CN218934687U CN218934687U CN202222849382.8U CN202222849382U CN218934687U CN 218934687 U CN218934687 U CN 218934687U CN 202222849382 U CN202222849382 U CN 202222849382U CN 218934687 U CN218934687 U CN 218934687U
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Abstract
The utility model relates to a link control circuit and pump switch cabinet relates to the electrical field, and this circuit includes first function relay, second pump auxiliary contact, first selection accuse switch and first pump switch closing circuit. The negative electrode of the relay is connected with the control direct current negative electrode of the first pump through the second pump auxiliary contact, the positive electrode of the relay is connected with the direct current positive electrode, and a circuit formed by connecting the relay and the selection control switch is connected with two ends of a switching-on loop of the first pump switch; the second pump auxiliary contact is used for closing when the second pump trips, so that the relay is electrified; the relay is used for sending pulse signals to the selection control switch after power is obtained; the selection control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the first pump switch to finish the switching-on. The circuit is simple to operate, the operation burden of workers can be reduced, and the risk brought by misoperation can be reduced.
Description
Technical Field
The present disclosure relates to the electrical arts, and in particular, to a link control circuit and a pump switch cabinet.
Background
In the current electrical field, the water pump, the oil pump and the like of the unit are configured into one pump and two pumps, the two pumps have an interconnection starting function, and when the pump switch is tripped, the standby pump switch is automatically switched on. In order to ensure safe and stable operation of the unit, an electric hard interlocking loop is generally required to be added.
In the related art, the current circuit design of the electrical hard interlocking loop requires a worker to switch the selection control switch according to the field operation condition in practical application, which not only consumes labor, but also is easy to cause serious consequences due to misoperation.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a coupling control circuit and a pump switch cabinet.
According to a first aspect of an embodiment of the present disclosure, there is provided a connection control circuit applied to a small computer or a host computer of a target unit, the small computer or the host computer including a first pump and a second pump, the first pump and the second pump being in a master-slave relationship, the circuit including: the first function relay, the second pump auxiliary contact, the first selection control switch and the first pump switch closing loop;
the negative electrode of the first functional relay is connected with the control direct current negative electrode of the first pump through the second pump auxiliary contact, and the positive electrode of the first functional relay is connected with the control direct current positive electrode of the first pump; the circuit formed by connecting the first functional relay and the first selective control switch is connected with two ends of the switching-on loop of the first pump switch;
the second pump auxiliary contact is used for closing when the second pump trips, so that the first functional relay is electrified;
the first functional relay is used for sending pulse signals to the first selection control switch after power is obtained;
the first selection control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the first pump switch to finish the connection start.
Optionally, the negative electrode of the first functional relay is connected with the first end of the second pump auxiliary contact, the second end of the second pump auxiliary contact is connected with the negative electrode of the control direct current of the first pump, and the positive electrode of the first functional relay is connected with the positive electrode of the control direct current of the first pump;
a first end of a relay contact of the first functional relay is connected with a first end of the first pump switch closing loop, a second end of the relay contact is connected with a first end of the first selective control switch, and a second end of the first selective control switch is connected with a second end of the first pump switch closing loop;
after the second pump trips, when the auxiliary contact of the second pump is closed, the first functional relay is electrified, the relay contact of the first functional relay is closed, the first functional relay sends pulse signals to the first selective control switch so that the first selective control switch is switched to the input gear, and after the first selective control switch is switched to the input gear, the first pump switch closing loop is conducted to finish the linkage.
Optionally, the circuit further comprises: a first fuse and a second fuse;
the first end of the first fuse is connected with the control direct current negative electrode, the second end of the first fuse is connected with the second end of the second pump auxiliary contact, the first end of the second fuse is connected with the positive electrode of the first functional relay, and the second end of the second fuse is connected with the control direct current positive electrode.
Optionally, the circuit further comprises: the second function relay, the first pump auxiliary contact, the second selective control switch and the second pump switch closing loop;
the negative electrode of the second functional relay is connected with the negative electrode of the control direct current of the second pump through the first pump auxiliary contact, and the negative electrode of the second functional relay is connected with the positive electrode of the control direct current of the second pump; a circuit formed by connecting the second functional relay and the second selective control switch is connected with two ends of the second pump switch closing loop;
the first pump auxiliary contact is used for closing when the first pump trips, so that the second functional relay is electrified;
the second functional relay is used for sending pulse signals to the second selective control switch after power is obtained;
the second selective control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the second pump switch to finish the connection and start.
Optionally, the negative electrode of the second functional relay is connected with the first end of the first pump auxiliary contact, the second end of the first pump auxiliary contact is connected with the negative electrode of the second pump for controlling direct current, and the positive electrode of the second functional relay is connected with the positive electrode of the second pump for controlling direct current;
the first end of the relay contact of the second functional relay is connected with the first end of the second pump switch closing loop, the second end of the relay contact of the second functional relay is connected with the first end of the second selective control switch, and the second end of the second selective control switch is connected with the second end of the second pump switch closing loop;
after the first pump trips, when the auxiliary contact of the first pump is closed, the second functional relay is electrified, the relay contact of the second functional relay is closed, the second functional relay sends pulse signals to the second selective control switch so that the second selective control switch is switched to the input gear, and after the second selective control switch is switched to the input gear, the second pump switch closing loop is conducted to finish the linkage.
Optionally, the circuit further comprises: third and fourth fuses;
the first end of the third fuse is connected with the control direct current negative electrode, the second end of the third fuse is connected with the second end of the first pump auxiliary contact, the first end of the fourth fuse is connected with the positive electrode of the second functional relay, and the second end of the fourth fuse is connected with the control direct current positive electrode.
Optionally, the first functional relay, the second pump auxiliary contact and the first selector switch are disposed in a switch cabinet of the second pump.
Optionally, the second functional relay, the first pump auxiliary contact and the second selector switch are disposed in a switch cabinet of the second pump.
Optionally, the first pump and the second pump comprise: an oil pump, a fixed cooling water pump, a small-machine alternating-current oil pump or a main machine alternating-current oil pump.
According to a second aspect of embodiments of the present disclosure, there is provided a pump switch cabinet comprising the start-up control circuit described in the first aspect.
In the technical scheme, the first pump and the second pump which are in a main-standby relation in the small machine or the main machine of the target unit are connected through the connection control circuit, and the circuit comprises a first functional relay, a second pump auxiliary contact, a first selection control switch and a first pump switch closing loop. The negative electrode of the first functional relay is connected with the control direct current negative electrode of the first pump through the second pump auxiliary contact, the positive electrode of the first functional relay is connected with the control direct current positive electrode of the first pump, and a circuit formed by connecting the first functional relay and the first selective control switch is connected with two ends of a switching-on loop of the first pump switch; the second pump auxiliary contact is used for closing when the second pump trips, so that the first functional relay is electrified; the first functional relay is used for sending pulse signals to the first selection control switch after power is obtained; the first selection control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the first pump switch to finish the switching-on. The linkage control circuit is simple to operate, the operation burden of workers can be reduced, and the risk brought by misoperation can be reduced.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a schematic diagram of a link control circuit, according to an example embodiment.
Fig. 2 is a schematic diagram of a link control circuit, according to an example embodiment.
Fig. 3 is a schematic diagram of an a-pump and B-pump on control circuit, according to an example embodiment.
Fig. 4 is a schematic diagram of a link control circuit, according to an example embodiment.
Fig. 5 is a schematic diagram of a link control circuit, according to an example embodiment.
Fig. 6 is a schematic diagram of an a-pump and B-pump on control circuit, according to an example embodiment.
Fig. 7 is a block diagram illustrating a pump switch cabinet according to an exemplary embodiment.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
The applicant found that in the related art, if the pump a and the pump B need to be connected, in the current design scheme of the electrical hard interlocking circuit, the auxiliary contact of the pump B and the selection switch are directly connected in series to the switch-on circuit of the pump a, and the design scheme needs to design the selection switch into three gears, because if only two gears are set for input and exit, the operation pump can continuously receive the connection instruction, which may cause serious consequences of automatic switch-on after the pump is switched off. It is therefore necessary to set the selector switch to: the three gears of the linkage exit, the B operation A standby and the A operation B standby are needed to be manually switched by a worker according to the on-site operation condition, and once the position of the selection switch is selected incorrectly, the linkage function is lost, or the switch is not timely carried out, so that serious consequences are easily caused. The present disclosure provides a coupling control circuit to solve the above-mentioned problems.
Fig. 1 is a schematic diagram of a link control circuit 1000 according to an exemplary embodiment, where the circuit is applied to a small computer or a host of a target unit, the small computer or the host includes a first pump and a second pump, and the first pump and the second pump are in a master-slave relationship, as shown in fig. 1, and the circuit includes: a first function relay 1101, a second pump auxiliary contact 1202, a first selector switch 1103 and a first pump switch closing circuit 1104.
The negative electrode of the first functional relay 1101 is connected with the negative electrode of the control direct current of the first pump through the second pump auxiliary contact 1202, and the positive electrode of the first functional relay 1101 is connected with the positive electrode of the control direct current of the first pump; a circuit formed by connecting the first functional relay 1101 and the first selection switch 1103 is connected to two ends of the first pump switch closing loop 1104;
optionally, the negative pole of the first functional relay 1101 is connected to the first end of the second pump auxiliary contact 1202, the second end of the second pump auxiliary contact 1202 is connected to the negative pole of the control dc of the first pump, and the positive pole of the first functional relay 1101 is connected to the positive pole of the control dc of the first pump;
a first end of a relay contact of the first functional relay 1101 is connected to a first end of the first pump switch closing loop 1104, a second end of the relay contact is connected to a first end of the first selector switch 1103, and a second end of the first selector switch 1103 is connected to a second end of the first pump switch closing loop 1104;
the second pump auxiliary contact 1202 is for closing in the event of a trip of the second pump, powering the first function relay 1101; wherein the second pump auxiliary contact 1202 may be triggered to close automatically in case the second pump trips.
The first function relay 1101 is configured to send a pulse signal to the first selector switch 1103 after power is applied;
the first selector switch 1103 is configured to switch to an input gear when receiving the pulse signal, and conduct the first pump switch closing loop 1104 to complete the connection.
Optionally, after the second pump trips, when the second pump auxiliary contact 1202 is closed, the first functional relay 1101 is powered on, the relay contact of the first functional relay 1101 is closed, the first functional relay 1101 sends a pulse signal to the first selective control switch 1103 to make the first selective control switch 1103 switch to the input gear, and after the first selective control switch 1103 switches to the input gear, the first pump switch closing loop 1104 is turned on to complete the linkage.
Optionally, the first pump and the second pump may include: an oil pump, a fixed cooling water pump, a small-machine alternating-current oil pump or a main machine alternating-current oil pump.
In the technical scheme, the first pump and the second pump which are in a main-standby relation in the small machine or the main machine of the target unit are connected through the connection control circuit, and the circuit comprises a first functional relay, a second pump auxiliary contact, a first selection control switch and a first pump switch closing loop. The negative electrode of the first functional relay is connected with the control direct current negative electrode of the first pump through the second pump auxiliary contact, the positive electrode of the first functional relay is connected with the control direct current positive electrode of the first pump, and a circuit formed by connecting the first functional relay and the first selective control switch is connected with two ends of a switching-on loop of the first pump switch; the second pump auxiliary contact is used for closing when the second pump trips, so that the first functional relay is electrified; the first functional relay is used for sending pulse signals to the first selection control switch after power is obtained; the first selection control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the first pump switch to finish the switching-on. The linkage control circuit is simple to operate, can automatically complete linkage under the condition that the second pump trips, can lighten the operation burden of staff and can reduce the risk brought by misoperation.
FIG. 2 is a schematic diagram of a coupling control circuit 1000, as shown in FIG. 2, further including a first fuse 1105 and a second fuse 1106, according to an exemplary embodiment;
the first end of the first fuse 1105 is connected to the negative control dc voltage, the second end of the first fuse 1105 is connected to the second end of the second pump assist contact 1202, the first end of the second fuse 1106 is connected to the positive electrode of the first function relay 1101, and the second end of the second fuse 1106 is connected to the positive control dc voltage.
Illustratively, a pump a and a pump B of a certain small machine, such as a small machine, are illustrated in fig. 3, fig. 3 is a schematic diagram showing a pump a and pump B on-line control circuit according to an exemplary embodiment, where the pump a and the pump B are in a primary-backup relationship with each other, that is, the pump B is used as a backup pump when the pump a is used, and the pump a is used as a backup pump when the pump B is used, as shown in fig. 3, the circuit includes: the A pump function relay J1, the B pump auxiliary contact S2, the A pump selection control switch SW1 and the A pump switch closing loop, the first fuse FU1 and the second fuse FU2.
The negative pole A2-of the A pump function relay J1 is connected with the first end of the B pump auxiliary contact S2, the second end of the B pump auxiliary contact S2 is connected with the control direct current negative pole of the A pump through the first fuse FU1, and the positive pole A1+ of the A pump function relay J1 is connected with the control direct current positive pole of the A pump through the second fuse FU 2; the first end of the relay contact SJ1 of the A pump function relay J1 is connected with the first end of the A pump switch closing loop, the second end of the relay contact SJ1 of the A pump function relay J1 is connected with the first end of the A pump selection control switch SW1, and the second end of the A pump selection control switch SW1 is connected with the second end of the A pump switch closing loop.
The auxiliary contact S2 of the B pump is used for closing under the condition that the B pump trips, and the closing of the auxiliary contact S2 of the B pump is automatically triggered after the B pump trips, so that the functional relay J1 of the A pump is electrified; the pump A function relay J1 is used for sending a pulse signal to the pump A selection control switch SW1 after power is obtained; the pump A selection control switch SW1 is used for switching to a switching gear when receiving the pulse signal, and conducting the switch-on loop of the pump A switch to finish the connection and start.
The small machine A is provided with an oil pump A and an oil pump B, after the pump B trips, an auxiliary contact of the pump B is closed, a coil of the pump A function relay is powered on, the pump A function relay sends a pulse signal of 2s, the selection control switch has two gears for inputting and outputting, after receiving the pulse signal, the selection control switch can be switched to the input gear, and a switching-on loop of the pump A switch is conducted, so that the combination starting can be completed. The functional relay can be modified by selecting a relay with the model of DILET70-A, and the functional relay is not limited by the disclosure.
Fig. 4 is a schematic diagram of a coupling control circuit 1000 according to an exemplary embodiment, as shown in fig. 4, the circuit further comprising: a second functional relay 1201, a first pump auxiliary contact 1102, a second selector switch 1203, and a second pump switch closing loop 1204;
the negative electrode of the second functional relay 1201 is connected with the negative electrode of the control direct current of the second pump through the first pump auxiliary contact 1102, and the negative electrode of the second functional relay 1201 is connected with the positive electrode of the control direct current of the second pump; a circuit formed by connecting the second functional relay 1201 and the second selection switch 1203 is connected with two ends of the second pump switch closing loop 1204;
optionally, the negative electrode of the second functional relay 1201 is connected to the first end of the first pump auxiliary contact 1102, the second end of the first pump auxiliary contact 1102 is connected to the negative electrode of the second pump for controlling direct current, and the positive electrode of the second functional relay 1201 is connected to the positive electrode of the second pump for controlling direct current;
optionally, a first end of a relay contact of the second functional relay 1201 is connected to a first end of the second pump switch closing circuit, a second end of the relay contact of the second functional relay 1201 is connected to a first end of the second selective control switch 1203, and a second end of the second selective control switch 1203 is connected to a second end of the second pump switch closing circuit 1204;
the first pump auxiliary contact 1102 is for closing in case of tripping of the first pump, powering the second function relay 1201; wherein the first pump auxiliary contact 1102 may be triggered to automatically close in the event of a trip of the first pump.
The second function relay 1201 is configured to send a pulse signal to the second selection switch 1203 after power is applied;
the second selection control switch is used for switching to the input gear when receiving the pulse signal, and conducting the second pump switch closing loop 1204 to finish the connection start.
Optionally, after the first pump trips, when the first pump auxiliary contact 1102 is closed, the second functional relay 1201 is powered on, the relay contact of the second functional relay 1201 is closed, the second functional relay 1201 sends a pulse signal to the second selective control switch 1203 to make the second selective control switch 1203 switch to the input gear, and after the second selective control switch 1203 switches to the input gear, the second pump switch closing circuit 1204 is conducted, so as to complete the linkage.
FIG. 5 is a schematic diagram of a coupling control circuit 1000, as shown in FIG. 5, further including a third fuse 1205 and a fourth fuse 1206, according to an example embodiment;
the first terminal of the third fuse 1205 is connected to the negative control dc voltage, the second terminal of the third fuse 1205 is connected to the second terminal of the first pump auxiliary contact 1102, the first terminal of the fourth fuse 1206 is connected to the positive electrode of the second function relay 1201, and the second terminal of the fourth fuse 1206 is connected to the positive control dc voltage.
Fig. 6 is a schematic diagram of a pump a and pump B in a primary and backup relationship to each other, i.e., pump B is used as a backup pump when pump a is used and pump a is used as a backup pump when pump B is used, according to an exemplary embodiment, as shown in fig. 6, the circuit includes: the pump B function relay J2, the pump A auxiliary contact S1, the pump B selection control switch SW2 and the pump B switch closing loop, the third fuse FU3 and the fourth fuse FU4.
The negative pole B2-of the B pump function relay J2 is connected with the first end of the A pump auxiliary contact S1, the second end of the A pump auxiliary contact S1 is connected with the control direct current negative pole of the B pump through the third fuse FU3, and the positive pole B1+ of the B pump function relay J2 is connected with the control direct current positive pole of the B pump through the fourth fuse FU 4; the first end of a relay contact SJ2 of the B pump function relay J2 is connected with the first end of a B pump switch closing loop, the second end of the relay contact SJ2 of the B pump function relay J2 is connected with the first end of the B pump selection control switch SW2, and the second end of the B pump selection control switch SW2 is connected with the second end of the B pump switch closing loop.
The auxiliary contact S1 of the pump A is used for closing under the condition that the pump A trips, and the auxiliary contact S1 of the pump A is automatically triggered after the pump A trips, so that the functional relay J2 of the pump B is electrified; the B pump function relay J2 is used for sending a pulse signal to the B pump selection control switch SW2 after power is supplied; the B pump selection control switch SW2 is used for switching to a switching gear when receiving the pulse signal, and conducting the B pump switch closing loop to finish the connection start.
The small machine A is provided with an oil pump A and an oil pump B, after the pump A trips, an auxiliary contact of the pump A is closed, a coil of a functional relay of the pump B is powered on, the functional relay of the pump B sends a pulse signal of 2s, a selection control switch has two gears for inputting and outputting, after receiving the pulse signal, the selection control switch can be switched to the input gear, a switching-on loop of the pump B is conducted, and the combination starting can be completed. The functional relay can be modified by selecting a relay with the model of DILET70-A, and the functional relay is not limited by the disclosure.
Optionally, the first functional relay, the second pump auxiliary contact and the first selector switch in the above circuit are disposed in a switch cabinet of the second pump.
Optionally, the second functional relay, the first pump auxiliary contact and the second selector switch in the above circuit are disposed in a switch cabinet of the second pump.
It will be appreciated that in one possible implementation, for ease of field construction, the two function relays, the two pump auxiliary contacts and the two selector switches are all provided in the switchgear of the same pump.
In the technical scheme, the first pump and the second pump which are in a main-standby relation in the small machine or the main machine of the target unit are connected through the connection control circuit, and the circuit comprises a first functional relay, a second pump auxiliary contact, a first selection control switch and a first pump switch closing loop. The negative electrode of the first functional relay is connected with the control direct current negative electrode of the first pump through the second pump auxiliary contact, the positive electrode of the first functional relay is connected with the control direct current positive electrode of the first pump, and a circuit formed by connecting the first functional relay and the first selective control switch is connected with two ends of a switching-on loop of the first pump switch; the second pump auxiliary contact is used for closing when the second pump trips, so that the first functional relay is electrified; the first functional relay is used for sending pulse signals to the first selection control switch after power is obtained; the first selection control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the first pump switch to finish the switching-on. The linkage control circuit is simple to operate, the operation burden of workers can be reduced, and the risk brought by misoperation can be reduced.
The present disclosure also provides a pump switch cabinet, fig. 7 is a block diagram illustrating a structure of a pump switch cabinet according to an exemplary embodiment, as shown in fig. 7, including a start-up control circuit as shown in fig. 1 to 6.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. The utility model provides a link control circuit which characterized in that is applied to the little machine or the host computer of target unit, little machine or the host computer includes first pump, second pump, first pump with the second pump is the master-slave relationship each other, the circuit includes: the first function relay, the second pump auxiliary contact, the first selection control switch and the first pump switch closing loop;
the negative electrode of the first functional relay is connected with the control direct current negative electrode of the first pump through the second pump auxiliary contact, and the positive electrode of the first functional relay is connected with the control direct current positive electrode of the first pump; the circuit formed by connecting the first functional relay and the first selective control switch is connected with two ends of the switching-on loop of the first pump switch;
the second pump auxiliary contact is used for closing when the second pump trips, so that the first functional relay is electrified;
the first functional relay is used for sending pulse signals to the first selection control switch after power is obtained;
the first selection control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the first pump switch to finish the connection start.
2. The circuit of claim 1, wherein the circuit comprises a plurality of capacitors,
the negative electrode of the first functional relay is connected with the first end of the second pump auxiliary contact, the second end of the second pump auxiliary contact is connected with the negative electrode of the control direct current of the first pump, and the positive electrode of the first functional relay is connected with the positive electrode of the control direct current of the first pump;
a first end of a relay contact of the first functional relay is connected with a first end of the first pump switch closing loop, a second end of the relay contact is connected with a first end of the first selective control switch, and a second end of the first selective control switch is connected with a second end of the first pump switch closing loop;
after the second pump trips, when the auxiliary contact of the second pump is closed, the first functional relay is electrified, the relay contact of the first functional relay is closed, the first functional relay sends pulse signals to the first selective control switch so that the first selective control switch is switched to the input gear, and after the first selective control switch is switched to the input gear, the first pump switch closing loop is conducted to finish the linkage.
3. The circuit of claim 2, further comprising: a first fuse and a second fuse;
the first end of the first fuse is connected with the control direct current negative electrode, the second end of the first fuse is connected with the second end of the second pump auxiliary contact, the first end of the second fuse is connected with the positive electrode of the first functional relay, and the second end of the second fuse is connected with the control direct current positive electrode.
4. The circuit of claim 1, wherein the circuit further comprises: the second function relay, the first pump auxiliary contact, the second selective control switch and the second pump switch closing loop;
the negative electrode of the second functional relay is connected with the negative electrode of the control direct current of the second pump through the first pump auxiliary contact, and the negative electrode of the second functional relay is connected with the positive electrode of the control direct current of the second pump; a circuit formed by connecting the second functional relay and the second selective control switch is connected with two ends of the second pump switch closing loop;
the first pump auxiliary contact is used for closing when the first pump trips, so that the second functional relay is electrified;
the second functional relay is used for sending pulse signals to the second selective control switch after power is obtained;
the second selective control switch is used for switching to a switching gear when receiving the pulse signal, and conducting the switching-on loop of the second pump switch to finish the connection and start.
5. The circuit of claim 4, wherein the circuit further comprises a logic circuit,
the negative electrode of the second functional relay is connected with the first end of the first pump auxiliary contact, the second end of the first pump auxiliary contact is connected with the negative electrode of the control direct current of the second pump, and the positive electrode of the second functional relay is connected with the positive electrode of the control direct current of the second pump;
the first end of the relay contact of the second functional relay is connected with the first end of the second pump switch closing loop, the second end of the relay contact of the second functional relay is connected with the first end of the second selective control switch, and the second end of the second selective control switch is connected with the second end of the second pump switch closing loop;
after the first pump trips, when the auxiliary contact of the first pump is closed, the second functional relay is electrified, the relay contact of the second functional relay is closed, the second functional relay sends pulse signals to the second selective control switch so that the second selective control switch is switched to the input gear, and after the second selective control switch is switched to the input gear, the second pump switch closing loop is conducted to finish the linkage.
6. The circuit of claim 5, further comprising: third and fourth fuses;
the first end of the third fuse is connected with the control direct current negative electrode, the second end of the third fuse is connected with the second end of the first pump auxiliary contact, the first end of the fourth fuse is connected with the positive electrode of the second functional relay, and the second end of the fourth fuse is connected with the control direct current positive electrode.
7. The circuit of claim 1, wherein the first functional relay, second pump auxiliary contact, and first selector switch are disposed in a switch cabinet of the second pump.
8. The circuit of claim 4, wherein the second function relay, first pump auxiliary contact, and second selector switch are disposed in a switch cabinet of the second pump.
9. The circuit of any one of claims 1 to 8, wherein the first pump and the second pump comprise: an oil pump, a fixed cooling water pump, a small-machine alternating-current oil pump or a main machine alternating-current oil pump.
10. A pump switch cabinet comprising a start-up control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222849382.8U CN218934687U (en) | 2022-10-25 | 2022-10-25 | Linkage control circuit and pump switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222849382.8U CN218934687U (en) | 2022-10-25 | 2022-10-25 | Linkage control circuit and pump switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218934687U true CN218934687U (en) | 2023-04-28 |
Family
ID=86060909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222849382.8U Active CN218934687U (en) | 2022-10-25 | 2022-10-25 | Linkage control circuit and pump switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218934687U (en) |
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2022
- 2022-10-25 CN CN202222849382.8U patent/CN218934687U/en active Active
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