CN210015192U - Partial discharge defect simulation device - Google Patents
Partial discharge defect simulation device Download PDFInfo
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- CN210015192U CN210015192U CN201920465727.5U CN201920465727U CN210015192U CN 210015192 U CN210015192 U CN 210015192U CN 201920465727 U CN201920465727 U CN 201920465727U CN 210015192 U CN210015192 U CN 210015192U
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- partial discharge
- screw hole
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Abstract
The utility model discloses a partial discharge defect simulation device, which comprises a discharge barrel, wherein the discharge barrel is formed by connecting and combining an upper electrode plate, an insulating barrel body and a lower electrode plate; a screw hole is formed in the center of the upper electrode plate, an adjusting screw matched with the screw hole is arranged at the screw hole, one end of the adjusting screw extends into the insulating cylinder body through the screw hole, a metal needle point is welded at the end part of the adjusting screw, and the other end of the adjusting screw extends out of the insulating cylinder body through the screw hole; at least two small holes are formed in the lower electrode plate, and insulating support columns which are matched with the small holes and are consistent in length are fixed at the positions of the small holes. The utility model discloses the device can produce the partial discharge defect sample of the two kinds of metal point discharge and suspension discharge respectively under different conditions.
Description
Technical Field
The utility model relates to a power equipment partial discharge testing technical field especially relates to a partial discharge defect analogue means.
Background
Partial discharge is a precursor to the aging of the insulation of electrical equipment, and measuring partial discharge of electrical equipment is an effective method for diagnosing the insulation of equipment. The common types of partial discharge include free metal particle discharge, metal point discharge, suspension discharge, creeping discharge and the like, the discharge quantity and the discharge phase diagram and other characteristic quantities of each discharge type are different, the characteristics of each discharge type are deeply researched and the characteristics of the rule are mastered, and the development of the partial discharge test of the field electrical equipment can be better guided.
The research on different types of partial discharge requires using partial discharge defect samples as research objects, the partial discharge defect samples are all manufactured manually or processed by solid electrical equipment at present, and manufactured or processed finished products can meet the requirement of generating corresponding types of partial discharge physical characteristics after high voltage is applied.
However, the existing partial discharge defect simulation device can only generate a unique partial discharge type, that is, one partial discharge defect simulation device can only be used for the research of one partial discharge type, if various types of partial discharge characteristics need to be researched simultaneously, a plurality of partial discharge defect simulation devices are needed to manufacture different typical partial discharge defect samples, the material consumption is large, and the economic benefit is not high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current partial discharge defect analogue means and can only produce unique partial discharge type scheduling problem, provide a partial discharge defect analogue means.
In order to realize the purpose of the utility model, the technical means adopted is as follows:
a partial discharge defect simulation device comprises a discharge cylinder, wherein the discharge cylinder is formed by connecting and combining an upper electrode plate, an insulating cylinder body and a lower electrode plate;
a screw hole is formed in the center of the upper electrode plate, an adjusting screw matched with the screw hole is arranged at the screw hole, one end of the adjusting screw extends into the insulating cylinder body through the screw hole, a metal needle point is welded at the end part of the adjusting screw, and the other end of the adjusting screw extends out of the insulating cylinder body through the screw hole; and the bottom surface of the lower electrode plate is fixedly connected with at least two insulating support columns with the same length.
In the scheme, high voltage is applied to the upper electrode plate through the external power supply, the lower electrode plate is at the ground potential, the metal needle point is at the high potential due to the fact that the metal needle point is conducted with the upper electrode plate, the electric field intensity between the metal needle point and the lower electrode is not uniformly distributed, the electric field intensity near the metal needle point is extremely high, electrons are excited to dissociate to generate partial discharge, namely the discharge condition of the metal tip is simulated, and the sample can be used as a discharge defect sample of the metal tip; the external power supply applies high voltage to the lower electrode plate, the upper electrode plate is grounded, the metal needle point is suspended in an electric field generated by the lower electrode plate at the moment, voltage is induced according to impedance distribution of the metal needle point, an air gap between the lower electrode plate and the metal needle point is punctured to generate partial discharge, namely, the suspension discharge condition is simulated, and the sample can be used as a suspension discharge defect sample at the moment.
Preferably, four small holes are formed in the periphery of the bottom surface of the lower electrode plate, and each small hole is fixedly connected with an insulation support column which is matched with the small hole and has the same length. In the preferred embodiment, the insulating support column plays a role in supporting the sample body and insulating the ground.
Preferably, an adjusting handle for operating the adjusting screw is mounted at the end of the other end of the adjusting screw. In this preferred scheme, adjust the position of adjusting screw through operation adjustment handle for it is more convenient to operate.
Preferably, the inner wall of the screw hole is provided with a sealing ring, and the adjusting screw rod is in close contact with the upper electrode plate through the screw hole and the sealing ring. In the preferred scheme, the distance between the metal needle point and the lower electrode plate is adjusted by changing the depth of the adjusting screw rod extending into the insulating cylinder body, so that the electrode can obtain stable partial discharge when high voltage is applied; the sealing ring is additionally arranged on the inner wall of the screw hole, so that the sealing condition in the flashlight body is further guaranteed.
Preferably, the metal needle tip is always separated from the lower electrode plate.
Preferably, the insulating cylinder body is a component made of organic glass. In the preferred scheme, the upper electrode plate and the lower electrode plate are separated by organic glass, so that the upper electrode plate and the lower electrode plate are not conductive, and the interior of the discharge cylinder is in a sealed state; and organic glass is used to facilitate the observation of the discharge condition.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:
the partial discharge defect simulation device of the utility model can respectively generate two types of partial discharge defect samples of metal point discharge and suspension discharge under different conditions, namely, the device can be used for researching the characteristics of the two types of discharge of the metal point discharge and the suspension discharge; and the distance between the metal needle point and the lower electrode plate can be adjusted by changing the insertion depth of the adjusting screw rod, so that the electrode can obtain stable partial discharge when high voltage is applied, and favorable conditions are provided for the research of the partial discharge. The problem that the existing partial discharge defect simulation device can only generate a unique partial discharge type, namely, one partial discharge defect simulation device can only be used for partial discharge type research is solved. The utility model provides high partial discharge defect sample preparation material's utilization ratio to economic benefits has been improved.
Drawings
Fig. 1 is a structural diagram of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, a partial discharge defect simulation apparatus includes a discharge cylinder, which is formed by connecting and combining an upper electrode plate 1, an insulating cylinder body 3 and a lower electrode plate 2; the upper electrode plate 1 and the lower electrode plate 2 are made of conductive metal materials;
a screw hole 4 is formed in the center of the upper electrode plate 1, an adjusting screw rod 5 matched with the screw hole 4 is arranged at the position of the screw hole 4, one end of the adjusting screw rod 5 extends into the insulating cylinder body 3 through the screw hole 4, a metal needle point 6 is welded at the end part of the adjusting screw rod 5, and the other end of the adjusting screw rod 5 extends out of the insulating cylinder body 3 through the screw hole 4; an adjusting handle for operating the adjusting screw 5 is mounted at the end part of the other end of the adjusting screw 5; four small holes are formed in the periphery of the bottom surface of the lower electrode plate 2, and an insulating support column 7 which is matched with the small holes and is consistent in length is fixed in each small hole.
Wherein, the inner wall of screw hole 4 is equipped with the sealing washer, adjusting screw 5 is through screw hole 4 and its sealing washer and upper electrode plate 1 in close contact with.
Wherein, the material of insulating barrel 3 is insulating material for organic glass.
Wherein, the metal needle tip 6 is always separated from the lower electrode plate 2.
The method of use of example 1 is as follows:
when a metal tip discharge defect sample needs to be generated, a high voltage is applied to the upper electrode plate 1 of the partial discharge defect simulation device in this embodiment 1 through an external power supply, the lower electrode plate 2 is at a ground potential, because the metal needle point 6 is conducted with the upper electrode plate 1, the metal needle point 6 is at a high potential at this time, the electric field intensity between the metal needle point 6 and the lower electrode plate is not uniformly distributed, the electric field intensity near the metal needle point 6 is extremely high, electrons are excited to dissociate to generate partial discharge, that is, the metal tip discharge condition is simulated, and at this time, the sample can be used as the metal tip discharge defect sample to perform research on the partial discharge characteristics and.
When a suspension discharge defect sample needs to be generated, a high voltage is applied to the lower electrode plate 2 of the partial discharge defect simulation device of the embodiment 1 through an external power supply, at this time, the metal needle point 6 is suspended in an electric field generated by the lower electrode plate 2, a voltage is induced according to impedance distribution of the metal needle point, an air gap between the lower electrode plate 2 and the metal needle point 6 is broken down to generate partial discharge, namely, the suspension discharge condition is simulated, and at this time, the sample can be used as the suspension discharge defect sample to perform research on the partial discharge characteristics and rules.
In the use process, the adjusting screw rod 5 is operated by holding the adjusting handle, so that the depth of the adjusting screw rod extending into the insulating cylinder body 3 is changed, the distance between the metal needle point 6 and the lower electrode plate 2 is adjusted, and the electrode can obtain stable partial discharge when high voltage is applied.
The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The partial discharge defect simulation device is characterized by comprising a discharge cylinder, wherein the discharge cylinder is formed by connecting and combining an upper electrode plate (1), an insulating cylinder body (3) and a lower electrode plate (2);
a screw hole (4) is formed in the center of the upper electrode plate (1), an adjusting screw rod (5) matched with the screw hole (4) is arranged at the screw hole (4), one end of the adjusting screw rod (5) extends into the insulating cylinder body (3) through the screw hole (4), a metal needle point (6) is welded at the end part of the adjusting screw rod, and the other end of the adjusting screw rod (5) extends out of the insulating cylinder body (3) through the screw hole (4); the bottom surface of the lower electrode plate (2) is fixedly connected with at least two insulation support columns (7) with the same length.
2. The partial discharge defect simulation device according to claim 1, wherein four small holes are formed in the periphery of the bottom surface of the lower electrode plate (2), and each small hole is fixedly connected with an insulation support column (7) which is matched with the small hole and has the same length.
3. The partial discharge defect simulation apparatus according to claim 1, wherein an end of the other end of the adjusting screw (5) is mounted with an adjusting handle for operating the adjusting screw (5).
4. The partial discharge defect simulation apparatus according to claim 3, wherein the inner wall of the screw hole (4) is provided with a sealing ring, and the adjusting screw (5) is in close contact with the upper electrode plate (1) through the screw hole (4) and the sealing ring thereof.
5. The partial discharge defect simulation apparatus according to claim 4, wherein the metal needle tip (6) is always separated from the lower electrode plate (2).
6. The partial discharge defect simulation apparatus according to any one of claims 1 to 5, wherein the insulating cylinder (3) is a member made of organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920465727.5U CN210015192U (en) | 2019-04-04 | 2019-04-04 | Partial discharge defect simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920465727.5U CN210015192U (en) | 2019-04-04 | 2019-04-04 | Partial discharge defect simulation device |
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| Publication Number | Publication Date |
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| CN210015192U true CN210015192U (en) | 2020-02-04 |
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| CN201920465727.5U Active CN210015192U (en) | 2019-04-04 | 2019-04-04 | Partial discharge defect simulation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115206164A (en) * | 2022-06-27 | 2022-10-18 | 上海格鲁布科技有限公司 | True mode simulation device of many discharge sources |
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2019
- 2019-04-04 CN CN201920465727.5U patent/CN210015192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115206164A (en) * | 2022-06-27 | 2022-10-18 | 上海格鲁布科技有限公司 | True mode simulation device of many discharge sources |
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