CN212364463U - Current transformer test device with vacuum arc extinguish chamber - Google Patents
Current transformer test device with vacuum arc extinguish chamber Download PDFInfo
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- CN212364463U CN212364463U CN202021546343.5U CN202021546343U CN212364463U CN 212364463 U CN212364463 U CN 212364463U CN 202021546343 U CN202021546343 U CN 202021546343U CN 212364463 U CN212364463 U CN 212364463U
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- pull rod
- rod
- connecting cylinder
- current transformer
- vacuum arc
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- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a current transformer test device with a vacuum arc extinguish chamber, which comprises an insulating pull rod, a metal bracket, a connecting cylinder body and a rotating handle, wherein the insulating pull rod comprises a pull rod a, insulating ceramic and a pull rod b, one end of the pull rod a is of a threaded connecting rod structure, the other end of the pull rod a is connected with the insulating ceramic, the insulating ceramic is also connected with one end of the pull rod b, the other end of the pull rod b is provided with a pin hole a, one end of the connecting cylinder body is provided with a pin hole b, and a fixing pin passes through the pin hole a and the pin hole b to fix the pull rod b with the connecting cylinder; an internal thread is arranged inside the other end of the connecting cylinder, and an external thread rod on the rotary handle penetrates through the metal support to be meshed with the internal thread. The test device is convenient to assemble and disassemble, the high-voltage end and the grounding end are isolated, the test device is easy to manufacture, and the test efficiency is effectively improved.
Description
Technical Field
The utility model relates to a take vacuum interrupter's current transformer test device, concretely relates to vacuum interrupter is at the test device under the separating brake state in the current transformer.
Background
The traditional current transformer is not provided with a vacuum arc extinguish chamber, so that switching-on and switching-off operations are not needed, and a direct wiring test can be performed.
The latest current transformer with a vacuum arc-extinguishing chamber needs to perform switching-off operation on the vacuum arc-extinguishing chamber and perform a power-on test on the current transformer in a switching-off state. Therefore, a testing device capable of adjusting the opening distance is urgently needed.
SUMMERY OF THE UTILITY MODEL
To prior art have above-mentioned problem, this application provides a take vacuum interrupter's current transformer test device, and its loading and unloading are convenient, isolated high-voltage terminal and earthing terminal, can accurately adjust the separating brake and pull open the distance.
In order to achieve the purpose, the technical scheme of the application is as follows: a current transformer test device with a vacuum arc extinguish chamber comprises an insulating pull rod, a metal support, a connecting cylinder and a rotating handle, wherein the insulating pull rod comprises a pull rod a, insulating ceramic and a pull rod b, one end of the pull rod a is of a threaded connecting rod structure, the other end of the pull rod a is connected with the insulating ceramic, the insulating ceramic is also connected with one end of the pull rod b, a pin hole a is formed in the other end of the pull rod b, a pin hole b is formed in one end of the connecting cylinder, and a fixing pin penetrates through the pin hole a and the pin hole b to fix the pull rod b with the connecting cylinder; an internal thread is arranged inside the other end of the connecting cylinder, and an external thread rod on the rotary handle penetrates through the metal support to be meshed with the internal thread.
Further, the thread pitch on the external thread rod is designed into different sizes according to requirements.
Furthermore, the metal support comprises a support ring, a support plate and support rods, and a plurality of support rods are arranged between the support ring and the support plate to form a surrounding hollow structure.
Furthermore, one end of the connecting cylinder body is provided with a blind hole for accommodating the pull rod b, the other end of the connecting cylinder body is provided with a threaded hole for accommodating the external threaded rod, and the thread pitch of the threaded hole is matched with that of the external threaded rod.
Furthermore, rotatory handle includes the rotary rod, and this rotary rod passes through the cylinder and links to each other with the external screw thread pole, the card platform department that forms between cylinder and the external screw thread pole is connected with the backup pad.
The utility model discloses owing to adopt above technical scheme, can gain following technological effect: the insulating pull rod isolates the high-voltage end from the grounding end on the premise of ensuring the strength and the conductive effect, so that the safety of the grounding end is ensured; the tail end of the insulating pull rod is provided with a connecting cylinder body with a threaded hole, and the opening distance of the opening brake is accurately adjusted through a metal bracket and a rotating handle. The insulated pull rod with the metal bracket and the rotary handle removed can be used as a mounting accessory in the use of the current transformer. The test device is convenient to assemble and disassemble, the high-voltage end and the grounding end are isolated, the test device is easy to manufacture, the test efficiency is effectively improved, and the practicability is high.
Drawings
FIG. 1 is a schematic structural view of a test apparatus according to the present application;
FIG. 2 is an external view of the test apparatus of the present application;
FIG. 3 is a diagram of the application of the test apparatus of the present application;
the sequence numbers in the figures illustrate: 1. the device comprises pull rods a, 2, insulating ceramics, 3, pull rods b, 4, a connecting cylinder body, 5, a fixing pin, 6, a support rod, 7, an external thread rod, 8, a cylinder body, 9, a rotating rod, 10, a support plate, 11, a support ring, 12, a moving contact of the vacuum arc extinguish chamber, 13, a flexible connection copper bar, 14, a copper rod, 15 and a static contact of the vacuum arc extinguish chamber.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific embodiments: the present application is further described by taking this as an example.
Example 1
As shown in fig. 1-2, the present embodiment provides a current transformer testing apparatus with a vacuum arc-extinguishing chamber, which includes an insulating pull rod for connecting a conductor to isolate high voltage, a metal bracket for supporting and guiding, a connecting cylinder for connecting the insulating pull rod and a rotating handle, a rotating handle for precisely adjusting the opening distance, and a fixing pin for fast disassembling, the insulating pull rod comprises a pull rod a, insulating ceramic and a pull rod b, the pull rod a is a metal piece, one end of the connecting rod is in a threaded connecting rod structure and is used for fixing a moving contact of the vacuum arc extinguish chamber and a flexible connecting copper bar, the other end of the connecting rod is embedded into the head part of the insulating ceramic, the pull rod b is a metal piece, one end of the connecting cylinder is embedded into the tail part of the insulating ceramic, the other end of the connecting cylinder is provided with a pin hole a, one end of the connecting cylinder is provided with a pin hole b, and a fixing pin penetrates through the pin hole a and the pin hole b to fix the pull rod b and the connecting cylinder; an internal thread is arranged inside the other end of the connecting cylinder, and an external thread rod on the rotary handle penetrates through the metal support to be meshed with the internal thread.
The metal support comprises a support ring, a support plate and support rods, wherein the support plate is provided with a through hole for enabling an external thread rod to pass through, and a plurality of support rods are arranged between the support ring and the support plate to enable the support ring to be of a surrounding hollow structure, so that the support ring is convenient to disassemble and operate.
Rotatory handle includes the rotary rod, and this rotary rod passes through the cylinder and links to each other with the external screw thread pole, the card platform department that forms between cylinder and the external screw thread pole is connected with the backup pad.
One end of the connecting cylinder body is provided with a blind hole for accommodating the pull rod b, the other end of the connecting cylinder body is provided with a threaded hole for accommodating the external threaded rod, the thread pitch of the threaded hole is matched with that of the external threaded rod, and the thread pitch on the external threaded rod is designed into different sizes according to requirements; for example: when the vacuum arc-extinguishing chamber needs to be pulled apart by 9mm, the pitch of the external thread rod on the rotating handle can be designed to be 1.5mm, namely, the rotating handle rotates for 1 week every time and moves for 1.5mm along the direction of the thread, and the vacuum arc-extinguishing chamber can be pulled apart by 9mm only by rotating for 6 weeks.
The assembling method of the test device comprises the following steps: the tail end of a pull rod b of the insulating pull rod is inserted into a blind hole of the connecting cylinder body, and a fixing pin penetrates through a pin hole of the pull rod b and the pin hole of the connecting cylinder body to fix the pull rod b and the pin hole into a whole; the external thread rod on the rotary handle passes through the through hole of the supporting plate and is screwed into the threaded hole at the tail end of the connecting cylinder body.
As shown in fig. 3, a simplified schematic diagram of a current transformer with a vacuum interrupter is shown, details which are not relevant to the present application being omitted; the moving contact of the vacuum arc extinguish chamber and the fixed contact of the vacuum arc extinguish chamber are internal components of the vacuum arc extinguish chamber and are contacted together to be conducted under the condition of switching on. The copper rod is a copper conducting rod. The flexible connection copper bar can move in a certain range. And the copper rod is connected with the moving contact of the vacuum arc-extinguishing chamber in a lap joint mode by using a flexible connection copper bar. The threaded connecting rod structure of the pull rod a fixes the flexible connecting copper bar and the moving contact of the vacuum arc extinguish chamber, and supports the metal support outside the current transformer. The external threaded rod is screwed into the threaded hole of the connecting cylinder by rotating the handle, and the insulating pull rod, the connecting cylinder, the fixing pin and the moving contact of the vacuum arc extinguish chamber are all pulled out of the current transformer; the distance between the moving contact of the vacuum arc extinguish chamber and the static contact of the vacuum arc extinguish chamber can be adjusted by adjusting the number of rotating circles of the external threaded rod, the copper rod is electrified to generate high voltage when the distance is adjusted to be proper, and the static contact of the vacuum arc extinguish chamber and the rotating handle are not electrified at the moment.
An object of this application is to provide a take vacuum interrupter's current transformer test device to solve and how to test current transformer under vacuum interrupter separating brake state, its practicality is very strong.
The above, only for the utility model discloses create the concrete implementation way of preferred, nevertheless the utility model discloses the protection scope of creation is not limited to this, and any person skilled in this technical field is in the utility model discloses create the technical scope of disclosure, according to the utility model discloses the technical scheme of creation and utility model design equivalence replacement or change all should be covered in the protection scope of creation of the utility model.
Claims (5)
1. A current transformer test device with a vacuum arc extinguish chamber is characterized by comprising an insulating pull rod, a metal support, a connecting cylinder and a rotating handle, wherein the insulating pull rod comprises a pull rod a, insulating ceramic and a pull rod b, one end of the pull rod a is of a threaded connecting rod structure, the other end of the pull rod a is connected with the insulating ceramic, the insulating ceramic is also connected with one end of the pull rod b, the other end of the pull rod b is provided with a pin hole a, one end of the connecting cylinder is provided with a pin hole b, and a fixing pin penetrates through the pin hole a and the pin hole b to fix the pull rod b with the connecting cylinder; an internal thread is arranged inside the other end of the connecting cylinder, and an external thread rod on the rotary handle penetrates through the metal support to be meshed with the internal thread.
2. The testing device for the current transformer with the vacuum arc-extinguishing chamber is characterized in that the thread pitch on the external thread rod is designed to be different in size according to requirements.
3. The current transformer testing device with the vacuum arc-extinguishing chamber according to claim 1, wherein the metal support comprises a support ring, a support plate and a support rod, and a plurality of support rods are arranged between the support ring and the support plate to form a surrounding hollow structure.
4. The testing device of the current transformer with the vacuum arc-extinguishing chamber is characterized in that one end of the connecting cylinder body is provided with a blind hole for accommodating the pull rod b, the other end of the connecting cylinder body is provided with a threaded hole for accommodating the external threaded rod, and the thread pitch of the threaded hole is matched with that of the external threaded rod.
5. The testing device of the current transformer with the vacuum arc-extinguishing chamber is characterized in that the rotating handle comprises a rotating rod, the rotating rod is connected with an external threaded rod through a cylinder, and a supporting plate is connected to a clamping table formed between the cylinder and the external threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021546343.5U CN212364463U (en) | 2020-07-30 | 2020-07-30 | Current transformer test device with vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021546343.5U CN212364463U (en) | 2020-07-30 | 2020-07-30 | Current transformer test device with vacuum arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212364463U true CN212364463U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021546343.5U Active CN212364463U (en) | 2020-07-30 | 2020-07-30 | Current transformer test device with vacuum arc extinguish chamber |
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| CN (1) | CN212364463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014662A (en) * | 2020-07-30 | 2020-12-01 | 大连北方互感器集团有限公司 | Current transformer test device with vacuum arc extinguish chamber |
-
2020
- 2020-07-30 CN CN202021546343.5U patent/CN212364463U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014662A (en) * | 2020-07-30 | 2020-12-01 | 大连北方互感器集团有限公司 | Current transformer test device with vacuum arc extinguish chamber |
| CN112014662B (en) * | 2020-07-30 | 2025-05-30 | 大连北方互感器集团有限公司 | A current transformer test device with vacuum interrupter |
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