Anti-interference type sleeve end screen signal extraction device

Abstract

The utility model discloses an anti -interference type bushing end screen signal extraction device, include: detection cylinder, connecting component, detection cylinder includes the signal extractor of one end fixed mounting. The utility model discloses an anti -interference type bushing end screen signal extraction device, after detection cylinder is used in threaded mounting in the outer end of bushing end screen, with the rotation of detection cylinder and moves in, the conductive terminal in bushing end screen will contact first conducting rod, and in the continuous moving in of detection cylinder, first conducting rod is extruded, and first conducting rod in extruding will pass through the elastic force of its outer end multiple group first spring, and first conducting rod is pressed tightly and adheres on the conductive terminal in bushing end screen, to guarantee the close connection of inner end conductive component of detection cylinder installation in the outer end of bushing end screen, simultaneously, the conductive ring of first conducting rod one side installation, also can pass through the second spring and conductive block of its both ends, guarantees the close electrical connection between first conducting rod and conductive ring when moving.

Description

Technical Field

[0001] This utility model relates to the technical field of bushing end screen maintenance equipment, specifically an anti-interference bushing end screen signal extraction device. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is a major piece of equipment in the power system, mainly used to step up and step down voltage during the transmission of electrical energy. The bushing end screen refers to the screen at the end of the bushing capacitor core. It must be grounded during normal operation of the transformer to ensure the electrical safety of the bushing. In addition, the bushing end screen can also be used as a measuring terminal to measure the insulation resistance, dielectric loss and capacitance of the bushing.

[0003] Existing bushing end-screen signal extraction devices, such as the 220kV current transformer bushing end-screen signal pickup device disclosed in publication number CN211402430U, although they have an integrated sealed structure, good shielding and anti-interference performance, and are safe and reliable to use, and can effectively adapt to the field environment, the copper rod at one end of this signal pickup device is inconvenient to make a stable and tight connection with the conductive terminals in the bushing end-screen during detection. Therefore, we propose an anti-interference bushing end-screen signal extraction device. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] An anti-interference type sleeve end screen signal extraction device includes: a detection cylinder and a connecting assembly; the detection cylinder includes a signal extractor fixedly installed at one end; the connecting assembly includes a fixed plate fixedly installed on one side inside the detection cylinder, a first conductive rod movably installed in the middle of the fixed plate, a fixed frame fixedly installed on one side of the first conductive rod, multiple sets of first springs arranged and fixedly installed between the fixed frame and the fixed plate, a conductive ring movably installed on one side of the first conductive rod, and a second conductive rod fixedly connected to the bottom of the signal extractor.

[0007] Preferably, a plurality of fixed posts are also arranged and fixedly installed on one side of the fixed plate, and all the fixed posts are located inside the first spring.

[0008] Preferably, mounting cavities are provided on both sides of the conductive ring.

[0009] Preferably, a second spring is fixedly installed in each of the mounting cavities, and a conductive block is fixedly installed on one side of each second spring, with the conductive block matching and fitting against the inner wall of the mounting cavity.

[0010] Preferably, the detection cylinder also has an internal thread on one side.

[0011] Preferably, the second conductive rod is fixedly connected to the conductive ring.

[0012] Preferably, the detection cylinder, the fixing plate, and the fixing frame are all made of plastic.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] In this invention, after the detection cylinder is threadedly installed on the outer end of the sleeve end screen during use, as the detection cylinder rotates and moves in, the conductive terminals in the sleeve end screen will contact the first conductive rod. As the detection cylinder continues to move in, it will compress the first conductive rod. The first conductive rod, under compression, will be tightly pressed against the conductive terminals in the sleeve end screen by the elastic force of multiple sets of first springs at its outer end. This ensures a tight connection of the conductive components at the inner end of the detection cylinder after it is installed outside the sleeve end screen. At the same time, the conductive ring installed on one side of the first conductive rod can also ensure a tight electrical connection between the first conductive rod and the conductive ring at all times during its movement through the second springs and conductive blocks at both ends. Thus, the tight connection of the internal conductive components after the detection cylinder is installed avoids connection interference during detection and ensures the accuracy of signal extraction and detection. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a side sectional view of the present invention;

[0017] Figure 3 This is a rendering of the components of this utility model, including the fixing disk and the first conductive rod.

[0018] Figure 4 This is a side sectional view of the conductive ring of this utility model.

[0019] Figure label:

[0020] 100. Detection cylinder; 101. Signal extractor;

[0021] 200. Connecting assembly; 201. Fixing plate; 202. First conductive rod; 203. Fixing frame; 204. First spring; 205. Conductive ring; 206. Second conductive rod; 207. Fixing post; 208. Mounting cavity; 209. Second spring; 210. Conductive block; 211. Internal thread. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing an anti-interference sleeve end screen signal extraction device.

[0024] Example 1:

[0025] Combination Figure 1-4 As shown, the present invention provides an anti-interference type sleeve end screen signal extraction device, comprising: a detection cylinder 100 and a connecting assembly 200; the detection cylinder 100 includes a signal extractor 101 fixedly installed at one end; the connecting assembly 200 includes a fixed plate 201 fixedly installed on one side inside the detection cylinder 100, a first conductive rod 202 movably installed in the middle of the fixed plate 201, a fixed frame 203 fixedly installed on one side of the first conductive rod 202, multiple sets of first springs 204 arranged and fixedly installed between the fixed frame 203 and the fixed plate 201, a conductive ring 205 movably installed on one side of the first conductive rod 202, and the bottom of the signal extractor 101. The second conductive rod 206 is fixedly connected. On one side of the fixed plate 201, multiple sets of fixed posts 207 are also fixedly installed, and the fixed posts 207 are all located inside the first spring 204. The conductive ring 205 has mounting cavities 208 on both sides. The second spring 209 is fixedly installed in each mounting cavity 208. The conductive block 210 is fixedly installed on one side of the second spring 209, and the conductive block 210 matches and fits against the inner wall of the mounting cavity 208. The detection cylinder 100 also has an internal thread 211 on one side. The second conductive rod 206 and the conductive ring 205 are fixedly connected. The detection cylinder 100, the fixed plate 201 and the fixed frame 203 are all made of plastic.

[0026] Specifically, a transformer is a device that uses the principle of electromagnetic induction to change AC voltage. The bushing end screen refers to the screen at the end of the bushing capacitor core. It must be grounded during normal transformer operation to ensure the electrical safety of the bushing. Additionally, the bushing end screen can also be used as a measuring terminal to measure the bushing's insulation resistance, dielectric loss, and capacitance. In use, after the detection cylinder 100 is threaded onto the outer end of the bushing end screen, as the detection cylinder 100 rotates and moves in, the conductive terminals in the bushing end screen will contact the first conductive rod 202. As the detection cylinder 100 continues to move in, it contacts the first conductive rod 202. 2. During compression, the first conductive rod 202, through the elastic force of multiple sets of first springs 204 at its outer end, is tightly pressed against the conductive terminal in the end screen of the sleeve, thereby ensuring a tight connection between the inner conductive component of the detection cylinder 100 after it is installed outside the end screen of the sleeve. Simultaneously, the conductive ring 205 installed on one side of the first conductive rod 202, through the second springs 209 at both ends and the conductive block 210, ensures a tight electrical connection between the first conductive rod 202 and the conductive ring 205 during movement, thus ensuring a tight electrical connection between the first conductive rod 202 and the conductive ring 205 after the detection cylinder 100 is installed. The tight connection is used to avoid connection interference during detection and ensure the accuracy of signal extraction and detection. The fixed plate 201 inside the detection cylinder 100 is mainly used to ensure the stability of the first conductive rod 202 during movement and adjustment. The first spring 204 installed between the fixed frame 203 and the fixed plate 201 is mainly used to tighten the first conductive rod 202 and the fixed frame 203 through the elastic force generated by the first spring 204 when the first conductive rod 202 drives the fixed frame 203 to move, thereby ensuring a tight connection between the first conductive rod 202 and the conductive terminal in the end screen of the sleeve. The fixed post 207 at the end is mainly used to stabilize and restrain the first spring 204 to prevent it from bending during its extension and retraction adjustment. The inner end of the conductive block 210 is attached to the outer wall of the first conductive rod 202 and maintains an electrical connection. The outer end of the conductive block 210 is attached to the mounting cavity 208 and maintains an electrical connection. The conductive block 210 can also be electrically connected to the conductive ring 205 through the second spring 209 at the rear end, so that the conductive ring 205 can stably maintain an electrical connection with the first conductive rod 202. The internal thread 211 provided on one side of the detection cylinder 100 is mainly used for the threaded connection with the end screen of the sleeve.

[0027] Working principle and usage process of this utility model:

[0028] Before the testing cylinder 100 tests the end screen of the bushing, the dustproof and waterproof cover on the outer end of the end screen is removed. After the dustproof and waterproof cover is removed, the testing cylinder 100 can be installed on the outer end of the end screen through the internal thread 211 on one side. As the testing cylinder 100 moves gradually, the first conductive rod 202 at the inner end of the testing cylinder 100 will gradually contact and press the conductive terminals in the end screen of the bushing. After the first conductive rod 202 presses the conductive terminals, it will stretch the first spring 204 at the outer end to move and adjust. The first conductive rod 202 after movement and adjustment can also be moved and adjusted through the space between the first springs 204. The tension force is constantly and tightly pressed against the outer end of the conductive terminal to ensure electrical connection. During the movement and adjustment of the first conductive rod 202, the conductive blocks 210 on both sides of the conductive ring 205 will be constantly attached to the outer end of the first conductive rod 202 through the second spring 209 at the outer end to ensure a stable electrical connection with the first conductive rod 202. Thus, through the first conductive rod 202, the conductive ring 205 and the second conductive rod 206, a stable electrical connection is achieved between the conductive terminal in the sleeve end screen and the signal extractor 101, so as to facilitate the subsequent start of the signal extractor 101 for signal extraction and detection.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An anti-interference type bushing end screen signal extraction device, characterized in that, include: Detection cylinder (100), connecting assembly (200); The detection cylinder (100) includes a signal extractor (101) fixedly mounted at one end; The connecting assembly (200) includes a fixed plate (201) fixedly installed on one side inside the detection cylinder (100), a first conductive rod (202) movably installed in the middle of the fixed plate (201), a fixed frame (203) fixedly installed on one side of the first conductive rod (202), multiple sets of first springs (204) arranged and fixedly installed between the fixed frame (203) and the fixed plate (201), a conductive ring (205) movably installed on one side of the first conductive rod (202), and a second conductive rod (206) fixedly connected to the bottom of the signal extractor (101).

2. The anti-interference type bushing end screen signal extraction device according to claim 1, characterized in that, On one side of the fixed plate (201), multiple sets of fixed columns (207) are also arranged and fixedly installed, and the fixed columns (207) are all located inside the first spring (204).

3. The anti-interference type bushing end screen signal extraction device according to claim 1, characterized in that, The conductive ring (205) has mounting cavities (208) on both sides.

4. The anti-interference type bushing end screen signal extraction device according to claim 3, characterized in that, Each of the mounting cavities (208) is fixedly installed with a second spring (209), and a conductive block (210) is fixedly installed on one side of each second spring (209), and the conductive block (210) is matched and attached to the inner wall of the mounting cavity (208).

5. The anti-interference type bushing end screen signal extraction device according to claim 1, characterized in that, The detection cylinder (100) also has an internal thread (211) on one side.

6. The anti-interference type bushing end screen signal extraction device according to claim 1, characterized in that, The second conductive rod (206) is fixedly connected to the conductive ring (205).

7. The anti-interference type bushing end screen signal extraction device according to claim 1, characterized in that, The detection cylinder (100), the fixing plate (201), and the fixing frame (203) are all made of plastic.

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