CN114910827B - Device for detecting influence of locking on capacitance of variable capacitor - Google Patents
Device for detecting influence of locking on capacitance of variable capacitor Download PDFInfo
- Publication number
- CN114910827B CN114910827B CN202210518373.2A CN202210518373A CN114910827B CN 114910827 B CN114910827 B CN 114910827B CN 202210518373 A CN202210518373 A CN 202210518373A CN 114910827 B CN114910827 B CN 114910827B
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- capacitor
- platform
- torque sensor
- variable capacitor
- static torque
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/64—Testing of capacitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention relates to the field of detection, in particular to the field of detection of electronic components, and more particularly relates to a device for detecting the influence of locking on the capacitance of a variable capacitor, which comprises a capacitor fixing clamp and a drill chuck, and further comprises a static torque sensor, a motor drive and a transmission shaft, wherein the motor drive is fixedly connected with the static torque sensor through the transmission shaft, and the lower end of the static torque sensor is fixedly connected with the drill chuck; the capacitance detector is characterized by further comprising a pair of capacitor pole piece clamps, wherein one end of each capacitor pole piece clamp is connected to an interface of the capacitance detector, and the other end of each capacitor pole piece clamp is fixed on a pole piece of the capacitor to be detected. By adopting the technical scheme disclosed by the invention, the capacitor can be stably fixed, and accurate torsional moment data is provided by structural design and participation of the static torque sensor, so that the problems of large manual measurement error, high fixing difficulty and the like are effectively avoided.
Description
Technical Field
The invention relates to the field of detection, in particular to the field of detection of electronic components, and more particularly relates to a device for detecting the influence of locking on the capacitance of a variable capacitor.
Background
Variable capacitors, also referred to as variable capacitors, vary in capacitance by changing the relative effective area or inter-plate distance between the pole pieces. The variable capacitor generally comprises three parts, namely a moving plate, a fixed plate and an insulating medium, and the capacitance of the capacitor can be changed by changing the relative angle between the moving plate and the fixed plate.
In a variable capacitor, a lock nut is a key structure for controlling whether the capacitance of the capacitor is variable. When the locking nut is unlocked, the capacitance of the capacitor can be changed; when the locking nut is locked, the capacitance of the capacitor cannot be changed.
However, since the capacitor is a precise electronic component, the change in the state of the locknut may adversely affect the capacitance of the capacitor. Therefore, in the detection of the variable capacitor, the change of the capacitance should be within the allowable minimum range, and the change is not generated in the optimal state. Specifically, the movable plate is placed at a position corresponding to 40% to 60% of the nominal maximum capacitance, then the driving mechanism is locked by applying torque, and the primary capacitance C1 is measured; then locking the driving mechanism in a way of applying torque clockwise, and measuring the primary capacitance C2 again; finally, the driving mechanism is locked by applying a moment anticlockwise, and the primary capacitance C3 is measured again.
Comparing C2, C3 and C1, respectively, the variation should be within the range allowed by the relevant specification.
Currently, such detection relies primarily on manual operation. The detection shows the defects of difficult torque application, large error of a rotation angle, uneven rotation speed, difference of detection results of different experimenters and the like. The defects are finally reflected in that the error of the installation detection result of the variable capacitor in the industry at present is large, the reliability is low and the like.
Disclosure of Invention
The invention aims to solve the technical problem of finding a device which can be used for automatically detecting the influence of locking on the capacitance of a variable capacitor, thereby replacing manual operation, improving the detection accuracy and reducing the dependency of detection on operators.
In order to solve the technical problem, the invention discloses a device for detecting the influence of locking on the capacitance of a variable capacitor, which comprises a capacitor fixing clamp and a drill chuck, wherein the capacitor fixing clamp consists of a groove capable of accommodating the variable capacitor, and the drill chuck is provided with a fixed groove hole matched with a rotating shaft of the capacitor; the drill chuck is characterized by also comprising a static torque sensor, a motor drive and a transmission shaft, wherein the motor drive is fixedly connected with the static torque sensor through the transmission shaft, and the lower end of the static torque sensor is fixedly connected with the drill chuck, so that a co-rotating body consisting of the motor drive, the transmission shaft, the static torque sensor and the drill chuck is formed; the capacitance detector further comprises a pair of capacitor pole piece clamps, one end of each capacitor pole piece clamp is connected to an interface of the capacitance detector, and the other end of each capacitor pole piece clamp is fixed on a pole piece of the capacitor to be detected.
The capacitor plate clamp and the capacitance detector are both the existing capacitance detection technology and can be directly used. Also, the static torque sensor is an existing torque measuring tool, and can measure the rotating torque of the transmission shaft, so that the rotating torque can be accurately controlled.
Further preferably, the capacitor fixing clamp comprises a base, and a sliding groove is formed in the base; the first card and the second head are movably arranged on a base station with the same smooth surface, and the moving direction of the first card and the second head is vertical to the direction of the sliding groove of the base; the card connector also comprises a stop limiter, and the stop limiter fixes the first card and the head and the second card and the head at a specific position.
The first card and the head cooperate with the second card and the head to form a fixing effect on the capacitor, and the capacitor is clamped between the first card and the head and the second card and the head, thereby realizing the fixing in the moving axial direction of the first card and the head and the second card and the head. Meanwhile, the movement of the capacitor in the direction perpendicular to the movement axis of the first card and the head and the second card and the head can be adjusted by the sliding of the base in the sliding groove. These two movements and adjustments achieve a movement of the capacitor in the horizontal direction.
Preferably, the two sides of the base platform are respectively bent upwards to form a first side platform and a second side platform, a through hole is formed in the centers of the first side platform and the second side platform, the base platform further comprises an adjusting rod which is respectively a first adjusting rod and a second adjusting rod, the first adjusting rod penetrates through the through hole of the first side platform and is fixed with the first clamp and the head side wall, the second adjusting rod penetrates through the through hole of the second side platform and is fixed with the second clamp and the head side wall, the braking limiter is a nut and is fixed on the first adjusting rod or the second adjusting rod through threads arranged on the first adjusting rod and the second adjusting rod and forms limit with the first clamp and the head, the second clamp and the head respectively.
Adopt this base station structure, the position of first card and first and second card and head of control that can be more convenient, also more firm simultaneously.
Preferably, the device further comprises a lifting table, wherein a vertical groove is formed in the lifting table, a sliding table is matched in the vertical groove, and the sliding table slides up and down along the vertical groove; the common rotating body composed of the motor drive, the transmission shaft, the static torque sensor and the drill chuck is connected with the sliding table to form a common body capable of moving up and down.
The vertical movement of the drill chuck can be realized by utilizing the lifting platform, so that the drill chuck can be better aligned with the capacitor, and the rotating shaft on the capacitor is inserted into the slotted hole of the drill chuck.
Further preferably, the motor drive is accommodated in the sliding table, and the transmission shaft penetrates through the sliding table shell and is fixedly connected with the static torque sensor.
Further preferably, the electric capacity tester further comprises a testing platform, wherein the testing platform is fixed between the static torque sensor and the drill chuck, the electric capacity detector is accommodated in the testing platform, and the electric capacity testing interface is exposed out of the testing platform.
Further preferably, the device further comprises a working platform, wherein the working platform comprises a horizontal platform and a vertical platform. The horizontal platform is used for fixing the base, and the vertical platform is used for fixing the lifting platform. Therefore, the horizontal adjusting mechanism and the vertical adjusting mechanism are integrated in one working platform, and detection is convenient.
Further preferably, the device further comprises a raising platform, and the raising platform is fixed between the horizontal platform and the base.
Preferably, the height of the elevating platform is adjusted by the overlapping depth between the upper plane and the lower plane of the elevating platform.
The sliding table is limited by other mechanisms in the up-and-down sliding process, so that the sliding table cannot be completely contacted with the bottom, and the capacitor is small in size, so that the situation of incomplete contact is caused, and the capacitor can be lifted upwards by the lifting table to meet the insertion depth of the drill chuck.
The adjustment mode of the overlapping depth between the upper plane and the lower plane is similar to the adjustment mode of the sleeve, and the fixation under the specific overlapping depth is realized through a bolt and the like.
The device for detecting the influence of locking on the capacitance of the variable capacitor can stably fix the capacitor, and provides accurate torsional moment data by structural design and by the participation of the static torque sensor, so that the problems of large manual measurement error, high fixing difficulty and the like are effectively solved.
Drawings
FIG. 1 is a schematic diagram of an apparatus for detecting the effect of lock on the capacitance of a variable capacitor.
Fig. 2 is a schematic view of another view of an apparatus for detecting the effect of lock on the capacitance of a variable capacitor.
Fig. 3 is a schematic view of gear engagement.
Detailed Description
In order that the invention may be better understood, the invention will now be further described with reference to specific examples.
Example 1
The device for detecting the influence of locking on the capacitance of the variable capacitor as shown in fig. 1 and fig. 2 comprises a capacitor fixing clamp and a drill chuck, wherein the capacitor fixing clamp is composed of a groove capable of accommodating the variable capacitor, preferably, the capacitor fixing clamp in the embodiment comprises a base 1, and a sliding groove is formed in the base 1; the device also comprises two oppositely arranged cards and heads, namely a first card and head 2 and a second card and head 3, wherein the first card and head 2 and the second card and head 3 are movably arranged on a base platform 4 with the same smooth surface, and the moving direction of the cards and heads is vertical to the direction of a sliding groove of the base; the device comprises a base, a first clamp, a first head, a second clamp, a second head, a stop limiter and a second stop, wherein the first clamp, the second head and the second head are fixed at a specific position by the stop limiter, in the embodiment, as shown in fig. 1 preferably, two sides of the base are respectively bent upwards to form a first side table 5 and a second side table 6, the centers of the first side table 5 and the second side table 6 are respectively provided with a through hole, the device also comprises adjusting rods which are respectively a first adjusting rod 7 and a second adjusting rod 8, the first adjusting rod 7 penetrates through the through hole of the first side table 5 to be fixed with the side walls of the first clamp and the second head 2, the second adjusting rod 8 penetrates through the through hole of the second side table 6 to be fixed with the side walls of the second clamp and the second head 3, the stop limiter is a nut 9 and is fixed on the first adjusting rod or the second adjusting rod through threads arranged on the first adjusting rod and the second adjusting rod to form limit with the first clamp, the second clamp and the first head; the drill chuck 10 is provided with a fixed slotted hole matched with the rotating shaft of the capacitor; the drill chuck further comprises a static torque sensor 11, a motor driver 12 and a transmission shaft 13, wherein the motor driver 12 is fixedly connected with the static torque sensor 11 through the transmission shaft 13, and the lower end of the static torque sensor 11 is fixedly connected with the drill chuck 10, so that a co-rotating body consisting of the motor driver, the transmission shaft, the static torque sensor and the drill chuck is formed; the device also comprises a pair of capacitor pole piece clamps 14, wherein one end of each capacitor pole piece clamp 14 is connected to an interface 15 of the capacitance detector, and the other end of each capacitor pole piece clamp is fixed on a pole piece of the capacitor to be detected. In this embodiment, preferably, the device further includes a lifting platform 16, a vertical groove is formed on the lifting platform 16, a sliding platform is matched in the vertical groove, and the sliding platform slides up and down along the vertical groove; the common rotating body composed of the motor drive, the transmission shaft, the static torque sensor and the drill chuck is connected with the sliding table to form a common body capable of moving up and down. Preferably, the motor drive is accommodated in the sliding table, and the transmission shaft penetrates through the sliding table shell and is fixedly connected with the static torque sensor. Further preferably, it can be seen that in this embodiment a test station 17 is also included, said test station 17 being fixed between the static torque sensor 11 and the drill chuck 10, said capacitance detector being housed within the test station, the capacitance test interface 15 being exposed to the test station.
More preferably, the present embodiment further comprises a working platform, and the working platform comprises a horizontal platform 18 and a vertical platform 19. The horizontal platform is used for fixing the base, and the vertical platform is used for fixing the lifting platform.
The testing process of the present invention is further described below in conjunction with FIG. 1 and the above-described structure.
Firstly, a locking nut on the variable capacitor is inserted into the lower end of the drill chuck and clamped and fixed. Then the sliding table is adjusted to move up and down to the lower capacitor fixing clamp through the gear slide way by rotating the handle 20, and the vertical height is adjusted at the moment. And then further adjusting the positions of the first card and head and the second card and head, including the XY two-axis direction adjustment on this horizontal plane, so that the variable capacitor-accommodating groove formed by the first card and head and the second card and head coincides with the variable capacitor position, and then locking the first card and head and the second card and head. After locking, the capacitor pole piece clamps are respectively clamped at two ends of the capacitor, so that capacitance change can be monitored in real time. Then, a driving motor is used for applying a rotating torque to the locking nut of the capacitor, and a static torque sensor connected with the transmission shaft is used for receiving a torque signal, so that the rotating torque is applied to the locking nut of the capacitor according to a controllable torque.
In the process, the capacitor plate clamp, the capacitance detector and the static torque sensor are all purchased from commercial mature products directly. .
Finally, in the embodiment shown, it is further preferable to further include a raising platform 21, which is fixed between the horizontal platform and the base. In this embodiment, a height-adjustable platform is adopted to lift the base upwards.
In this process, turning the handle to drive the slide table by way of the geared slide and adjust its up and down motion relies on this configuration as seen in FIG. 3. It can be seen that when the rocking handle rotates to make the first gear a rotate, the second gear B meshed with the first gear a is driven to rotate, so that the crawler belt wound on the second gear is driven to rotate, and the sliding table is fixed on the crawler belt and moves up and down along with the crawler belt.
What has been described above is a specific embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (7)
1. Nut locking state detection device in variable capacitor of area lock nut, the lock state means that lock nut on the variable capacitor should lock so that the electric capacity of condenser can't change, its characterized in that: the capacitor fixing clamp is composed of a groove capable of accommodating a variable capacitor, and the drill chuck is provided with a fixing groove hole matched with a capacitor rotating shaft; the drill chuck is characterized by also comprising a static torque sensor, a motor drive and a transmission shaft, wherein the motor drive is fixedly connected with the static torque sensor through the transmission shaft, and the lower end of the static torque sensor is fixedly connected with the drill chuck, so that a co-rotating body consisting of the motor drive, the transmission shaft, the static torque sensor and the drill chuck is formed; the capacitance detector also comprises a pair of capacitor pole piece clamps, wherein one end of each capacitor pole piece clamp is connected to an interface of the capacitance detector, and the other end of each capacitor pole piece clamp is fixed on a pole piece of the capacitor to be detected;
the capacitor fixing clamp comprises a base, wherein a sliding groove is formed in the base; the first card and the second head are movably arranged on a base station with the same smooth surface, and the moving direction of the first card and the second head is vertical to the direction of the sliding groove of the base; the card connector also comprises a stop limiter, and the stop limiter fixes the first card and the head and the second card and the head at a specific position.
2. The device for detecting a nut locking state in a variable capacitor with a lock nut according to claim 1, wherein: the stop limiting device is a nut, is fixed on the first adjusting rod or the second adjusting rod through threads arranged on the first adjusting rod and the second adjusting rod, and forms limit with the first clamp, the second clamp and the head respectively.
3. The device for detecting a nut locking state in a variable capacitor with a lock nut according to claim 1, wherein: the lifting platform is provided with a vertical groove, a sliding platform is matched in the vertical groove, and the sliding platform slides up and down along the vertical groove; the common rotating body composed of the motor drive, the transmission shaft, the static torque sensor and the drill chuck is connected with the sliding table to form a common body capable of moving up and down.
4. The device for detecting a nut locking state in a variable capacitor with a lock nut according to claim 3, wherein: the motor drive is accommodated in the sliding table, and the transmission shaft penetrates through the shell of the sliding table and is fixedly connected with the static torque sensor.
5. The device for detecting a nut locking state in a variable capacitor with a lock nut according to claim 1, wherein: the capacitance detector is accommodated in the test bench, and a capacitance test interface is exposed out of the test bench.
6. The device for detecting a nut locking state in a variable capacitor with a lock nut according to claim 1, wherein: the device further comprises a working platform, wherein the working platform comprises a horizontal platform and a vertical platform.
7. The device for detecting a nut locking state in a variable capacitor with a lock nut according to claim 1, wherein: the device also comprises a raising platform which is fixed between the horizontal platform and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210518373.2A CN114910827B (en) | 2022-05-13 | 2022-05-13 | Device for detecting influence of locking on capacitance of variable capacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210518373.2A CN114910827B (en) | 2022-05-13 | 2022-05-13 | Device for detecting influence of locking on capacitance of variable capacitor |
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| CN114910827A CN114910827A (en) | 2022-08-16 |
| CN114910827B true CN114910827B (en) | 2023-04-14 |
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| CN202210518373.2A Active CN114910827B (en) | 2022-05-13 | 2022-05-13 | Device for detecting influence of locking on capacitance of variable capacitor |
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