Capacitive voltage transformer test wiring device

Abstract

The utility model discloses a capacitor voltage transformer test wiring device which comprises a limiting pipe, an inner pipe is movably embedded in the limiting pipe, a first positioning groove is formed in the outer arc surface of the inner pipe, and a terminal buckle is movably installed in the first positioning groove; and a rotating pipe is rotationally installed on the rear side of the limiting pipe, an inner protection block is installed in the rotating pipe in an embedded mode, a plurality of sets of second positioning grooves are formed in the outer arc face of the inner protection block in an equal-radian mode, and a set of electric leads is arranged in each set of second positioning grooves. The retaining ring is controlled to move through the sliding table arranged in the clamping block, so that the terminal buckle can slide out of the first positioning groove, then the operation of butt joint with the voltage transformer terminal is completed, meanwhile, after the terminal buckle is in butt joint with the terminal, side pulling of the terminal end is completed through resetting of the retaining ring, it is guaranteed that the terminal buckle can be stably connected with the terminal, and the service life of the terminal buckle is prolonged. The terminal can be prevented from being separated from the interior of the terminal buckle, and the test safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformer test wiring, in particular to a capacitive voltage transformer test wiring device. Background Art

[0002] With the continuous development of the economy, the requirements for power supply reliability are becoming increasingly stringent. Instrument transformers are crucial equipment in power systems, performing the following basic functions: They work with electrical instruments, relay protection, and automatic devices to measure parameters such as current, voltage, and energy in the power system's high-voltage circuits; they isolate high voltages to ensure the safety of personnel and equipment; and they standardize the secondary measurement ratings of instrument transformers, facilitating the standardization of secondary equipment and enabling the use of low-voltage, low-section cables for measurement and protection functions. Therefore, the proper condition of instrument transformers is crucial to the safe operation of power systems. To ensure their safe operation, they must undergo insulation testing.

[0003] Whether the capacitive voltage transformer can operate normally is directly related to the system voltage measurement, power measurement and control, automatic control and relay protection, so the quality of CVT is of great significance. At present, regular power outage preventive tests at a certain period are an important means to judge the status of CVT, and the test of CVT capacitance and dielectric loss is an important item in preventive tests.

[0004] Patent publication number CN207730923U, titled "Current Transformer Test Rod," belongs to the field of transformer testing tools and comprises a telescopic operating rod, a wire clamp at the top of the operating rod for clamping the device under test, and an automatic wire retraction and release device at the bottom of the operating rod. The automatic wire retraction and release device is wound around a wire, one end of which is connected to a conductor pull wire inside the wire clamp. The current transformer test rod provided by this utility model eliminates the need for high-altitude work, allowing testers to complete wiring work on the ground. This makes it easy to use, improves work efficiency, and enhances safety.

[0005] However, the transformer calibration in the above patent application technology is a manual wiring test, which requires the selection of test equipment for voltage transformers of different specifications. At the same time, the equipment has too many terminal circuits, which makes the wiring process cumbersome. Therefore, a capacitive voltage transformer test wiring device is now needed. Utility Model Content

[0006] The purpose of the present utility model is to provide a capacitive voltage transformer test wiring device, which ensures the testing of voltage transformers of different specifications by setting a group of terminal buckles and multiple groups of conductive wires for connection, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a capacitive voltage transformer test wiring device, comprising a limit tube, an inner tube movably embedded in the limit tube, a first positioning groove formed on the outer arc surface of the inner tube, a terminal buckle movably installed in the first positioning groove, and a rotary disk provided on the rear side of the first positioning groove;

[0008] A rotating tube is rotatably mounted on the rear side of the limiting tube, an inner protection block is embedded in the rotating tube, and a plurality of groups of second positioning grooves are provided on the outer arc surface of the inner protection block in equal arcs, a group of conductive wires is arranged inside each group of the second positioning grooves, and a group of pressure measuring resistors is electrically connected to the middle of each group of the conductive wires;

[0009] A detector is installed on the rear side of the rotating tube.

[0010] Preferably, a protection groove is provided on the front end surface of the limiting tube, a positioning seat is fixedly installed on the outer arc surface of the limiting tube at the position of the protection groove, and an annular groove is provided on the rear side of the outer arc surface of the limiting tube.

[0011] Preferably, a slot is provided at the bottom of the inner tube, a clamping block is mounted inside the slot, a slide is provided inside the clamping block, and a buckle is bolted to the outside of the slider at the output end of the slide.

[0012] Preferably, a slideway is provided through the corresponding slot position inside the first positioning groove, the buckle is movably installed inside the first positioning groove, and the buckle is sleeved on the surface of the terminal buckle.

[0013] Preferably, one end of the terminal buckle is hook-shaped, and a conductive socket is welded and installed on the other end of the terminal buckle, and an elastic conductive plate is installed on the end of the conductive socket.

[0014] Preferably, a connecting seat is provided on the outside of the rotating tube, the rotating tube is rotatably installed at the center of the connecting seat, a connecting head is fixedly installed at the front end of the rotating tube, and several groups of rotating beads are installed inside the connecting head for equal arc rotation, and the rotating beads are arranged to fit the inner wall of the annular groove.

[0015] Preferably, a tooth groove is provided at the front end of the inner protection block, and the turntable is inserted into the tooth groove and clamped for installation.

[0016] Preferably, a conductive head is fixedly mounted on one end of the conductive wire, a slot is provided at the center of the conductive head, and the elastic conductive plate is movably inserted into the slot.

[0017] Preferably, a connection block is fixedly installed at the front end of the detector, an anti-drop sleeve is installed on the outer arc surface of the connection block, and the anti-drop sleeve is sealed and fitted with the inner wall of the rotating tube.

[0018] Preferably, a docking joint is provided at the other end of the conductive wire, a docking plate is embedded and installed at the upper front end of the connector, and the docking joint and the docking plate are rotated and fitted for connection.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By setting a slide inside the card block to control the movement of the buckle, the terminal buckle can slide out from the first positioning groove, thereby completing the docking operation with the voltage transformer terminal. At the same time, after the terminal buckle is docked with the terminal, the buckle is reset to complete the pulling side of the terminal end, ensuring that the terminal buckle can be stably connected to the terminal. The positioning seat limits the terminal buckle, which can prevent the terminal from detaching from the inside of the terminal buckle, greatly improving the safety of the test.

[0021] 2. The turntable installed on the rear side of the inner tube controls the overall rotation of the rotating tube, and can rotate different conductive wires according to the specific specifications of the voltage transformer. The pressure measuring resistors set in the middle of each group of conductive wires are different. The conductive wires used can be adjusted during the rotation of the rotating tube to complete different voltage transformer tests. In addition, since there is only one group of terminal buckles, it can effectively avoid line confusion during the wiring process, greatly improving the convenience and efficiency of the wiring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a disassembled diagram of the installation structure of the limit tube of the utility model;

[0024] Figure 3 This is a disassembled diagram of the terminal buckle installation structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the buckle installation structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the installation structure of the elastic conductive plate of the utility model;

[0027] Figure 6 This is a disassembled diagram of the installation structure of the detector of the utility model;

[0028] Figure 7 This is a schematic diagram of the conductive wire installation structure of the utility model;

[0029] Figure 8 This is a schematic diagram of the overall structure of the conductive wire of the utility model;

[0030] Figure 9 This is a schematic diagram of the turntable installation structure of the utility model.

[0031] In the figure: 1. Limiting tube; 2. Protective groove; 3. Positioning seat; 4. Annular groove; 5. Inner tube; 6. First positioning groove; 7. Clamping block; 8. Slide; 9. Retaining ring; 10. Terminal buckle; 11. Conductive connector; 12. Elastic conductive plate; 13. Rotating tube; 14. Connecting seat; 15. Connecting head; 16. Rotating bead; 17. Inner protective block; 18. Second positioning groove; 19. Conductive wire; 20. Pressure measuring resistor; 21. Conductive head; 22. Clamping slot; 23. Docking head; 24. Detector; 25. Connecting block; 26. Anti-slip sleeve; 27. Docking plate; 28. Turntable. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The utility model provides: a capacitive voltage transformer test wiring device, such as Figures 1-9 As shown, it includes a limiting tube 1, an inner tube 5 is movably embedded in the limiting tube 1, a first positioning groove 6 is provided on the outer arc surface of the inner tube 5, a terminal buckle 10 is movably installed in the first positioning groove 6, and a turntable 28 is provided on the rear side of the first positioning groove 6; a rotating tube 13 is rotatably installed on the rear side of the limiting tube 1, an inner protective block 17 is embedded in the rotating tube 13, and a plurality of groups of second positioning grooves 18 are provided on the outer arc surface of the inner protective block 17 with equal curvature, a group of conductive wires 19 are provided in the inside of each group of second positioning grooves 18, and a group of pressure measuring resistors 20 are electrically connected in the middle of each group of conductive wires 19; a detector 24 is plugged into and installed on the rear side of the rotating tube 13.

[0034] Preferably, a protective groove 2 is provided on the front end face of the limiting tube 1, and a positioning seat 3 is fixedly installed on the outer arc surface of the limiting tube 1 for the position of the protective groove 2. An annular groove 4 is provided on the rear side of the outer arc surface of the limiting tube 1. The protective groove 2 provided on the front end of the limiting tube 1 is used to protect the recovered terminal buckle 10 to prevent damage to the terminal when the terminal buckle 10 is reset after being connected to the terminal. The protective groove 2 installed on the outer arc surface of the limiting tube 1 can limit the terminal buckle 10 so that the open end of the terminal buckle 10 is blocked, thereby ensuring the connection between the terminal buckle 10 and the terminal, and preventing the terminal from loosening from the opening of the terminal buckle 10. The annular groove 4 provided on the rear side of the outer arc surface of the limiting tube 1 cooperates with the rotating ball 16 inside the connector 15, so that the rotating tube 13 has higher stability during the rotation process. Since only one set of terminal buckles 10 is provided at the outer end of the limiting tube 1, it can effectively avoid the situation where multiple sets of terminal buckles 10 are used at the same time, thereby improving the convenience of testing the voltage transformer.

[0035] Furthermore, a slot is provided at the bottom of the inner tube 5, a card block 7 is installed inside the slot, a slide 8 is provided inside the card block 7, and a buckle 9 is bolted to the outside of the slider at the output end of the slide 8. The slot at the bottom of the inner tube 5 limits the card block 7, and the slide 8 and buckle 9 inside the card block 7 can ensure the movement of the terminal buckle 10, so that the terminal buckle 10 can be stably extended to connect with the terminal.

[0036] Furthermore, a slideway is provided through the corresponding slot position inside the first positioning groove 6, and the buckle 9 is movably installed inside the first positioning groove 6, and the buckle 9 is sleeved on the surface of the terminal buckle 10. The sliding piece opened in the middle of the first positioning groove 6 limits the movement of the buckle 9, so that the buckle 9 can stably drive the terminal buckle 10 to move and ensure the reset of the terminal buckle 10, so that the elastic conductive plate 12 at the end of the terminal buckle 10 can be stably inserted into the card slot 22, making the test safer and more stable.

[0037] It is worth noting that one end of the terminal buckle 10 is hook-shaped, and a conductive socket 11 is welded and installed on the other end of the terminal buckle 10. An elastic conductive plate 12 is installed at the end of the conductive socket 11. One end of the terminal buckle 10 is hook-shaped, so that the terminal buckle 10 can be better connected to the terminal, reducing the problem of terminal detachment. The installed conductive socket 11 can make the end of the terminal buckle 10 more stable, so that the elastic conductive plate 12 can be accurately inserted into the card slot 22 to complete the derivation of current.

[0038] Specifically, a connecting seat 14 is provided on the outside of the rotating tube 13, and the rotating tube 13 is rotatably installed at the center of the connecting seat 14. A connecting head 15 is fixedly installed at the front end of the rotating tube 13, and a plurality of groups of rotating beads 16 are rotatably installed inside the connecting head 15 at equal arcs. The rotating beads 16 are arranged to fit the inner wall of the annular groove 4. The connecting seat 14 installed on the outside of the rotating tube 13 enables the entire device to be installed on an external structure, can be extended out, and can also maintain the stability of the use of the rotating tube 13. The connecting head 15 installed at the front end of the rotating tube 13 is plugged into the limiting tube 1, so that the rotating beads 16 are stuck in the annular groove 4 and rotate, thereby improving the rotation performance of the rotating tube 13.

[0039] In addition, a tooth groove is provided at the front end of the inner protection block 17, and the turntable 28 is inserted into the tooth groove and installed. An electric drive is provided on the rear side of the inner tube 5, which can stably control the rotation of the turntable 28. When the turntable 28 rotates, the rotating tube 13 rotates, thereby completing the purpose of replacing the conductive wire 19 and realizing testing for different voltage transformers.

[0040] Furthermore, a conductive head 21 is fixedly installed at one end of the conductive wire 19, and a slot 22 is opened in the center of the conductive head 21. The elastic conductive plate 12 is movably inserted into the slot 22. The pressure measuring resistors 20 installed in the middle of each group of conductive wires 19 have different specifications, so that after rotating the rotating tube 13, different conductive wires 19 can be rotated to test different voltage transformers. The conductive head 21 installed at the front end of the conductive wire 19 and the slot 22 opened are connected to the conductive socket 11 and the elastic conductive plate 12 to improve the stability of the test.

[0041] Furthermore, a connecting block 25 is fixedly installed at the front end of the detector 24, and an anti-detachment sleeve 26 is installed on the outer arc surface of the connecting block 25. The anti-detachment sleeve 26 is sealed and fits with the inner wall of the rotating tube 13. The connecting block 25 and the anti-detachment sleeve 26 installed at the front end of the detector 24 can be docked with the corresponding end of the rotating tube 13, so that the detector 24 can be stably docked with the docking head 23, thereby realizing stable information transmission and improving the safety of the test.

[0042] Preferably, a docking connector 23 is provided at the other end of the conductive wire 19, and a docking plate 27 is embedded in the upper front end of the connector 15. The docking connector 23 and the docking plate 27 are rotated and fitted together. After the docking connector 23 installed at one end of the conductive wire 19 is fitted with the docking plate 27, the activity information can be exported, and the test data can be intuitively displayed to the staff through the detector 24 to ensure that accurate testing can be performed on voltage transformers of different specifications, thereby greatly improving the convenience of using the device.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A capacitor voltage transformer test wiring device, characterized in that: include: Limiting tube (1); An inner tube (5) is movably embedded in the limiting tube (1), a first positioning groove (6) is provided on the outer arc surface of the inner tube (5), a terminal buckle (10) is movably installed in the first positioning groove (6), and a rotating disk (28) is provided on the rear side of the first positioning groove (6); A rotating tube (13) is rotatably mounted on the rear side of the position limiting tube (1), an inner protection block (17) is embedded and mounted inside the rotating tube (13), a plurality of groups of second positioning grooves (18) of equal arc are provided on the outer arc surface of the inner protection block (17), a group of conductive wires (19) is arranged inside each group of the second positioning grooves (18), and a group of pressure measuring resistors (20) are electrically connected to the middle of each group of the conductive wires (19); A detector (24) is plugged and installed on the rear side of the rotating tube (13).

2. A capacitor voltage transformer test wiring device according to claim 1, characterized in that: The front end surface of the position limiting tube (1) is provided with a protection groove (2), the outer arc surface of the position limiting tube (1) is fixedly mounted with a positioning seat (3) corresponding to the position of the protection groove (2), and the rear side of the outer arc surface of the position limiting tube (1) is provided with an annular groove (4).

3. A capacitor voltage transformer test wiring device according to claim 2, characterized in that: A slot is provided at the bottom of the inner tube (5), a clamping block (7) is mounted inside the slot, a slide (8) is provided inside the clamping block (7), and a buckle (9) is bolted to the outside of the slider at the output end of the slide (8).

4. A capacitor voltage transformer test wiring device according to claim 3, characterized in that: A slideway is provided through the corresponding slot position inside the first positioning groove (6), the buckle (9) is movably installed inside the first positioning groove (6), and the buckle (9) is sleeved on the surface of the terminal buckle (10).

5. A capacitor voltage transformer test wiring device according to claim 4, characterized in that: One end of the terminal buckle (10) is hook-shaped, and the other end of the terminal buckle (10) is welded with a conductive socket (11), and the end of the conductive socket (11) is installed with an elastic conductive plate (12).

6. A capacitor voltage transformer test wiring device according to claim 5, characterized in that: A connecting seat (14) is provided on the outside of the rotating tube (13), and the rotating tube (13) is rotatably mounted at the center of the connecting seat (14). A connecting head (15) is fixedly mounted on the front end of the rotating tube (13), and a plurality of groups of rotating beads (16) are rotatably mounted inside the connecting head (15) in equal arcs, and the rotating beads (16) are arranged to fit the inner wall of the annular groove (4).

7. A capacitor voltage transformer test wiring device according to claim 6, characterized in that: A tooth groove is provided at the front end of the inner protection block (17), and the rotating disk (28) is inserted into the tooth groove for clamping installation.

8. A capacitor voltage transformer test wiring device according to claim 7, characterized in that: A conductive head (21) is fixedly mounted on one end of the conductive wire (19), a slot (22) is provided at the center of the conductive head (21), and the elastic conductive plate (12) is movably inserted into the slot (22).

9. A capacitor voltage transformer test wiring device according to claim 8, characterized in that: A connecting block (25) is fixedly mounted on the front end of the detector (24); an anti-dropout sleeve (26) is mounted on the outer arc surface of the connecting block (25); and the anti-dropout sleeve (26) is sealed and fitted with the inner wall of the rotating tube (13).

10. A capacitor voltage transformer test wiring device according to claim 9, characterized in that: The other end of the conductive wire (19) is provided with a docking joint (23), and a docking plate (27) is embedded and installed on the upper front end of the connector (15). The docking joint (23) and the docking plate (27) are connected by rotation and fit.

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