A mutual inductor induction withstand voltage test device

Abstract

The utility model relates to test device technical field of withstand voltage test, disclose a mutual inductor induction withstand voltage test device, including pull mechanism, limiting mechanism and test mechanism, the pull mechanism is located test mechanism's left end, the limiting mechanism is located the inside of pull mechanism. The pull mechanism includes protective housing, the inner wall fixed connection of protective housing has the rotating shaft, the surface rotation of rotating shaft is connected with the reel, the both sides fixed connection of reel has the connecting block, the surface fixed connection of rotating shaft has the clockwork spring, the inner wall winding of reel has the transmission wire. The utility model discloses the design that the transmission wire is used in the reel surface and is rewound with clockwork spring drive transmission wire reset, realizes the purpose that the transmission wire length is adjusted to adapt the required length of test fast, reduces the time wasted of manual winding adjustment, to further improve the efficiency of test, improves the practicability of device whole.

Description

Technical Field

[0001] This utility model relates to the technical field of withstand voltage testing devices, and in particular to a current transformer inductive withstand voltage testing device. Background Technology

[0002] Instrument transformers are crucial devices in power systems used for current and voltage measurement, protection, and metering. These transformers must undergo rigorous testing and verification in terms of electrical safety and operational performance to ensure they do not fail during normal operation; therefore, instrument transformer induced withstand voltage testing devices have emerged.

[0003] However, when using the current transformer withstand voltage test device, sometimes the wires are difficult to retract and extend flexibly when the wiring length needs to be adjusted according to the current transformer model or installation location, requiring repeated manual adjustments. This results in an increase in the overall test time and affects the practicality of the device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a current transformer inductive withstand voltage test device.

[0005] This utility model is achieved by the following technical solution: a current transformer inductive withstand voltage test device, comprising a pull-out mechanism, a limiting mechanism and a test mechanism, wherein the pull-out mechanism is located at the left end of the test mechanism and the limiting mechanism is located inside the pull-out mechanism;

[0006] The pull-out mechanism includes a protective shell, a rotating shaft fixedly connected to the inner wall of the protective shell, a winding frame rotatably connected to the surface of the rotating shaft, connecting blocks fixedly connected to both sides of the winding frame, a spring fixedly connected to the surface of the rotating shaft, a transmission wire wound around the inner wall of the winding frame, a connector fixedly connected to the upper end of the transmission wire, and an insulating sleeve fixedly connected to the surface of the connector.

[0007] The above technical solution, which uses the wire winding on the surface of the winding frame and the spring-driven resetting of the wire, achieves the purpose of quickly adjusting the length of the wire to match the required length for the test. This reduces the time wasted on manual winding and adjustment, thereby further improving the efficiency of the test and enhancing the overall practicality of the device.

[0008] As a further improvement to the above solution, the upper end of the spring is fixedly connected to the inner wall of the connecting block, and the number of the winding brackets is three, which are evenly distributed on the inner wall of the protective shell.

[0009] As a further improvement to the above solution, the limiting mechanism includes a sliding frame, a limiting frame fixedly connected to the lower end of the sliding frame, a fixed shaft slidably connected to the inner wall of the limiting frame, a return spring sleeved on the surface of the fixed shaft, a limiting shell fixedly connected to the left end of the fixed shaft, and a fixed frame snapped into the right end of the limiting frame.

[0010] The above technical solution uses the left and right sliding of the limit frame to control the limit of the transmission line, which achieves the purpose of preventing the transmission line from springing back after being pulled out, making the device more stable during use.

[0011] As a further improvement to the above solution, the surface of the limiting frame is slidably connected to the inner wall of the limiting shell, and the fixed shaft is located at the left end of the limiting frame.

[0012] As a further improvement to the above solution, the testing mechanism includes a testing instrument body, and a supporting leg is fixedly connected to the lower end of the testing instrument body.

[0013] The above technical solution provides certain support for the device during use, preventing the device from directly contacting the ground and causing surface impact, thus improving the practicality of the device.

[0014] As a further improvement to the above solution, the left end of the test instrument body is fixedly connected to the right end of the protective shell.

[0015] As a further improvement to the above solution, the inner wall of the protective shell is fixedly connected to the upper end of the limiting shell, the inner wall of the protective shell is fixedly connected to the upper end of the fixing frame, and the transmission line is located between the limiting frame and the fixing frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention features a pull-out mechanism: as the wire is pulled out, it simultaneously rotates the winding frame. While the winding frame rotates, the connecting blocks on both sides pull the springs, causing elastic deformation. When the device is finished and the wire needs to be retracted, simply pull the sliding frame again to open the limiting frame. The wire is then released from its limit, and the springs on both sides rotate the winding frame back to pull the wire back up, thus completing the wire retraction. This design, using the wire winding on the winding frame surface and the springs resetting the wire, allows for quick adjustment of the wire length to suit the required test length, reducing the time wasted on manual winding and adjustment, thereby further improving test efficiency and the overall practicality of the device.

[0018] This utility model incorporates a limiting mechanism. Specifically, when using the device, the sliding frame is first pulled to the left to slide the limiting frame, thereby separating the limiting frame from the fixed frame and releasing the restriction on the intermediate transmission wire. This facilitates the subsequent extraction of the transmission wire. After pulling to a suitable length, the restriction on the sliding frame is released. At this point, the limiting frame rebounds under the action of the return spring, thus re-engaging with the fixed frame and clamping the transmission wire to prevent it from springing back. The design of using the left and right sliding of the limiting frame to control the restriction on the transmission wire achieves the purpose of preventing the pulled-out transmission wire from springing back, making the device more stable during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the pull-out mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the specific component structure of the pull-out mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the pull-out mechanism and the limiting mechanism of this utility model.

[0024] Explanation of key symbols:

[0025] 1. Pull-out mechanism; 101. Protective housing; 102. Rotating shaft; 103. Winding frame; 104. Connecting block; 105. Spring; 106. Power transmission line; 107. Connector; 108. Insulating sleeve; 2. Limiting mechanism; 201. Sliding frame; 202. Limiting frame; 203. Fixed shaft; 204. Return spring; 205. Limiting housing; 206. Fixed frame; 3. Testing mechanism; 301. Testing instrument body; 302. Support legs. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example

[0028] Please combine Figure 1-5 The current transformer inductive withstand voltage test device of this embodiment includes a pull-out mechanism 1, a limiting mechanism 2 and a test mechanism 3. The pull-out mechanism 1 is located at the left end of the test mechanism 3, and the limiting mechanism 2 is located inside the pull-out mechanism 1.

[0029] The pull-out mechanism 1 includes a protective housing 101. A rotating shaft 102 is fixedly connected to the inner wall of the protective housing 101. A winding frame 103 is rotatably connected to the surface of the rotating shaft 102. Connecting blocks 104 are fixedly connected to both sides of the winding frame 103. A spring 105 is fixedly connected to the surface of the rotating shaft 102. A wire 106 is wound around the inner wall of the winding frame 103. A connector 107 is fixedly connected to the upper end of the wire 106. An insulating sleeve 108 is fixedly connected to the surface of the connector 107. The design of winding the wire 106 around the surface of the winding frame 103 and then resetting the wire 106 by the spring 105 achieves the purpose of quickly adjusting the length of the wire 106 to match the length required for the test, reducing the time wasted by manual winding and adjustment, thereby further improving the efficiency of the test and enhancing the overall practicality of the device.

[0030] The upper end of the spring 105 is fixedly connected to the inner wall of the connecting block 104. There are three winding frames 103, which are evenly distributed on the inner wall of the protective shell 101.

[0031] The limiting mechanism 2 includes a sliding frame 201. The lower end of the sliding frame 201 is fixedly connected to a limiting frame 202. A fixed shaft 203 is slidably connected to the inner wall of the limiting frame 202. A return spring 204 is sleeved on the surface of the fixed shaft 203. A limiting housing 205 is fixedly connected to the left end of the fixed shaft 203. A fixed frame 206 is snapped onto the right end of the limiting frame 202. The design of using the left and right sliding of the limiting frame 202 to control the limiting of the transmission wire 106 achieves the purpose of preventing the transmission wire 106 from springing back after being pulled out, making the device more stable during use.

[0032] The surface of the limiting frame 202 is slidably connected to the inner wall of the limiting housing 205, and the fixed shaft 203 is located at the left end of the limiting frame 202.

[0033] The testing mechanism 3 includes a testing instrument body 301, and a support leg 302 is fixedly connected to the lower end of the testing instrument body 301.

[0034] The left end of the test instrument body 301 is fixedly connected to the right end of the protective shell 101.

[0035] The inner wall of the protective housing 101 is fixedly connected to the upper end of the limiting housing 205, and the inner wall of the protective housing 101 is fixedly connected to the upper end of the fixing frame 206. The transmission wire 106 is located between the limiting frame 202 and the fixing frame 206.

[0036] The implementation principle of the current transformer inductive withstand voltage test device in this embodiment is as follows: When using the device, first pull the sliding frame 201 to the left to drive the limiting frame 202 to slide, thereby driving the limiting frame 202 to separate from the fixed frame 206, thus releasing the restriction on the intermediate transmission line 106. Then, pull the insulating sleeve 108 to drive the transmission line 106 out of the protective shell 101. At the same time as the transmission line 106 is pulled out, the transmission line 106 drives the winding frame 103 to rotate synchronously. While the winding frame 103 is rotating, the connecting blocks 104 on both sides pull the spring 105 to undergo elastic deformation. After being pulled to a suitable length, the restriction on the sliding frame 201 is released. At this time, the limiting frame 202 rebounds under the action of the return spring 204, thereby re-engaging with the fixed frame 206. This clamps the wire 106 to prevent it from springing back. When the device is finished and the wire 106 needs to be retracted, simply pull the sliding frame 201 again to make the limiting frame 202 slide open again. At this time, the wire 106 is released from the limit, and the springs 105 on both sides drive the winding frame 103 to rotate back to pull the wire 106 to rewind. This completes the retrieval of the wire 106. The design of winding the wire 106 on the surface of the winding frame 103 and resetting the wire 106 with the springs 105 achieves the purpose of quickly adjusting the length of the wire 106 to suit the length required for the test, reducing the time wasted by manual winding and adjustment, thereby further improving the efficiency of the test and the overall practicality of the device.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A current transformer inductive withstand voltage test device, characterized in that, It includes a pull-out mechanism (1), a limiting mechanism (2) and a testing mechanism (3), wherein the pull-out mechanism (1) is located at the left end of the testing mechanism (3) and the limiting mechanism (2) is located inside the pull-out mechanism (1); The pull-out mechanism (1) includes a protective shell (101), a rotating shaft (102) is fixedly connected to the inner wall of the protective shell (101), a winding frame (103) is rotatably connected to the surface of the rotating shaft (102), connecting blocks (104) are fixedly connected to both sides of the winding frame (103), a clock spring (105) is fixedly connected to the surface of the rotating shaft (102), a transmission wire (106) is wound around the inner wall of the winding frame (103), a connector (107) is fixedly connected to the upper end of the transmission wire (106), and an insulating sleeve (108) is fixedly connected to the surface of the connector (107).

2. The current transformer inductive withstand voltage test device as described in claim 1, characterized in that: The upper end of the spring (105) is fixedly connected to the inner wall of the connecting block (104), and there are three winding frames (103), which are evenly distributed on the inner wall of the protective shell (101).

3. The current transformer inductive withstand voltage test device as described in claim 2, characterized in that: The limiting mechanism (2) includes a sliding frame (201), the lower end of the sliding frame (201) is fixedly connected to a limiting frame (202), the inner wall of the limiting frame (202) is slidably connected to a fixed shaft (203), a return spring (204) is sleeved on the surface of the fixed shaft (203), the left end of the fixed shaft (203) is fixedly connected to a limiting shell (205), and the right end of the limiting frame (202) is snapped with a fixed frame (206).

4. The current transformer inductive withstand voltage test device as described in claim 3, characterized in that: The surface of the limiting frame (202) is slidably connected to the inner wall of the limiting shell (205), and the fixed shaft (203) is located at the left end of the limiting frame (202).

5. The current transformer inductive withstand voltage test device as described in claim 4, characterized in that: The testing mechanism (3) includes a testing instrument body (301), and a support leg (302) is fixedly connected to the lower end of the testing instrument body (301).

6. The current transformer inductive withstand voltage test device as described in claim 5, characterized in that: The left end of the test instrument body (301) is fixedly connected to the right end of the protective shell (101).

7. The current transformer inductive withstand voltage test device as described in claim 6, characterized in that: The inner wall of the protective shell (101) is fixedly connected to the upper end of the limiting shell (205), and the inner wall of the protective shell (101) is fixedly connected to the upper end of the fixing frame (206). The transmission line (106) is located between the limiting frame (202) and the fixing frame (206).

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