CN210604932U - High-tension bushing end screen ground connection detection device - Google Patents
High-tension bushing end screen ground connection detection device Download PDFInfo
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- CN210604932U CN210604932U CN201921234959.6U CN201921234959U CN210604932U CN 210604932 U CN210604932 U CN 210604932U CN 201921234959 U CN201921234959 U CN 201921234959U CN 210604932 U CN210604932 U CN 210604932U
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Abstract
A high-tension bushing end screen grounding detection device belongs to the field of detection devices and comprises a base and an end screen grounding cover; the method is characterized in that: the device also comprises a grounding electrode, a compression spring and a detection loop; the detection loop comprises a grounding detection electrode, a detection spring, a detection light-emitting diode, a battery pack and a detection switch; one side of the top wall of the end screen grounding cover is provided with a groove; a grounding through hole is arranged in the center of the grounding electrode; a detection through hole is formed in the center of the top wall of the end screen grounding cover; the upper end of the grounding detection electrode is arranged in the detection through hole, and the lower end of the grounding detection electrode is arranged in the grounding through hole; the other end of the detection switch is connected with the end screen grounding cover. Through the ground connection detection pole, detection spring, detection emitting diode, group battery and the detection switch that detection circuit includes, under the ground connection state, through closing detection switch, can detect the ground connection state in the outside of end screen ground connection lid, it is simple high-efficient to furthest's assurance electric wire netting equipment's safety and stability moves.
Description
Technical Field
The utility model belongs to the detection device field especially relates to a high-tension bushing end screen ground connection detection device.
Background
The oiled paper capacitor type high voltage bushing is one of important electrical devices of a power system, and not only plays a role of insulating a lead wire from the ground, but also plays a role of fixing and supporting the lead wire. The bushing end screen is also called a measuring terminal and is used for measuring the dielectric loss factor and the capacitance of the bushing and detecting whether the bushing can be normally put into operation. During normal operation of the bushing, the bushing end screen needs to be reliably grounded. At present, most of the sleeve end screen grounding modes are built-in, namely, the grounding cover is connected with a sleeve end screen lead post through a spring piece. Although the grounding mode is the most reliable one of the grounding modes at present, after the grounding cover is covered, whether the end screen is well grounded cannot be known, and an effective testing method is not available for detecting the end screen. When the spring leaf in the end screen grounding cover fails or deforms to cause poor end screen grounding, if the end screen grounding cover cannot be found in time, end screen grounding discharge can be caused after the end screen grounding cover is put into operation, even the risk that the sleeve explodes to cause equipment damage can be generated, and serious potential safety hazards are brought to the normal operation of a power grid.
Disclosure of Invention
The utility model aims at solving the above problem, a high-tension bushing end screen ground connection detection device is provided.
The utility model discloses a high-voltage bushing end screen grounding detection device, which comprises a base and an end screen grounding cover; the device also comprises a grounding electrode, a compression spring and a detection loop; the detection loop comprises a grounding detection electrode, a detection spring, a detection light-emitting diode, a battery pack and a detection switch; a groove is formed in one side, close to the top wall of the end screen grounding cover, of the side wall of the end screen grounding cover; the grounding electrode is plate-shaped; the grounding electrode is horizontally arranged in the groove; the grounding electrode is connected with the top wall of the end screen grounding cover through the compression spring; a grounding through hole is formed in the center of the grounding electrode; a detection through hole is formed in the center of the top wall of the end screen grounding cover; the upper end of the grounding detection electrode is arranged in the detection through hole, and the lower end of the grounding detection electrode is arranged in the grounding through hole; the aperture of the grounding through hole is larger than the diameter of the cross section of the lower end of the grounding detection electrode; an insulation limiting block is arranged between the grounding detection electrode and the detection through hole; one ends of the grounding detection electrode, the detection spring, the detection light emitting diode, the battery pack and the detection switch are electrically connected in sequence; the other end of the detection switch is connected with the end screen grounding cover. The earthing pole level sets up in the recess, and the both ends of earthing pole contact with the recess inner wall that sets up on end screen ground connection lid lateral wall under compression spring's effect to better make earthing pole and end screen ground connection lid contact, and then be the better realization ground effect of pin post. The aperture of the grounding through hole is larger than the diameter of the cross section of the lower end of the grounding detection electrode, so that the grounding detection electrode is in contact with the lead post, the lead post is in contact with the grounding electrode, and the grounding electrode is in contact with the end screen grounding cover to realize grounding.
The utility model discloses a high tension bushing end screen ground connection detection device, the longitudinal section of ground connection detection utmost point is the T type; the upper end of the grounding detection electrode is arranged in the detection through hole and is positioned above the insulation limiting block. On one hand, the end screen grounding cover and the grounding detection electrode are isolated and cannot be contacted with each other; on the other hand, can play spacing effect, when overhauing the sleeve pipe end screen, open end screen ground connection lid, under the effect of gravity, the detection spring can not overstretch and lead to elastic change, extension life cycle.
High-tension bushing end screen ground connection detection device, compression spring is provided with a plurality of side by side.
In the high-voltage bushing end screen grounding detection device, four compression springs are arranged in parallel at equal intervals; the pressing springs are arranged in parallel at equal intervals, so that the plate-shaped grounding electrode can be more stably contacted with the lead post, and the grounding electrode can be better and reliably contacted with the lead post under the action of the pressure of the springs; meanwhile, the grounding reliability is further improved by the four springs, and one to two springs lose elasticity or deform, so that the overall grounding state of the lead post is not influenced.
High-tension bushing end screen ground connection detection device, the top of detecting the spring is provided with the button. When the elasticity of a compression spring in the end screen grounding cover is weakened, the grounding detection electrode can be reliably contacted with the lead post in a mode of pressing a button, the misjudgment of the result caused by the weakening of the elasticity of the spring is prevented, and the accuracy of the detection loop is further improved.
In the high-voltage bushing end screen grounding detection device, a sealing rainproof cover is arranged at the top end of the end screen grounding cover; the button, the detection through hole, the detection light emitting diode, the battery pack and the detection switch are all located in the sealed rainproof cover. Sealed rain-proof cover mainly used protects detection return circuit. Whether in normal operation or when overhauing the preliminary examination to the sleeve pipe, sealed rain-proof cover all is in encapsulated situation, prevents that natural factor or human factor from causing the destruction to the detection return circuit. After the maintenance work, when recovering the sleeve pipe end screen, when detecting whether end screen ground connection is good, just open sealed rain-proof cover, detect the completion after, with sealed rain-proof cover recovery to encapsulated situation.
High-tension bushing end screen ground connection detection device, between sealed rain-proof cover and the end screen ground connection lid and all through fastening bolt fixed connection between base and the end screen ground connection lid.
In the high-voltage bushing end screen grounding detection device of the utility model, the fastening bolt is sleeved with the sealing gasket; the stability and the leakproofness of fixing are improved by arranging the seal.
High-tension bushing end screen ground connection detection device, button and detection spring encapsulate in plastic housing.
The utility model discloses a high-tension bushing end screen ground connection detection device, through the improvement to current end screen ground connection lid structure, increase earthing pole, pressure spring and detection return circuit; by adopting the plate-shaped grounding electrode, the contact area between the grounding electrode and the lead post is increased; meanwhile, downward running power is provided for the grounding electrode through the compression spring, the grounding electrode is arranged in the groove in the end screen grounding cover, and two ends of the grounding electrode are in contact with the inner wall of the groove, so that the grounding of the lead post can be realized more reliably; through the ground connection detection pole, detection spring, detection emitting diode, group battery and the detection switch that the detection return circuit includes, under the ground connection state, through closing detection switch, can detect the ground connection state through detecting emitting diode in the outside of end screen ground connection lid, it is simple high-efficient to furthest's assurance electric wire netting equipment's safety and stability operation.
Drawings
Fig. 1 is a schematic structural view of a high-voltage bushing end screen grounding detection device according to an embodiment of the present invention;
the device comprises a base 1, a sealing pad 2, a fastening bolt 3, a tail screen grounding cover 4, a lead post 5, a grounding electrode 6, a compression spring 7, a grounding detection electrode 8, an insulating limiting block 9, a sealing rainproof cover 10, a detection light emitting diode 11, a button 12, a detection switch 13 and a battery pack 14.
Detailed Description
The high-voltage bushing tap grounding detection device of the present invention is described in detail with reference to the accompanying drawings and embodiments.
The utility model discloses a high-voltage bushing end screen grounding detection device, as shown in figure 1, comprises a base 1 and an end screen grounding cover 4; the device also comprises a grounding electrode 6, a compression spring 7 and a detection loop; the detection loop comprises a grounding detection electrode 8, a detection spring, a detection light-emitting diode 11, a battery pack 14 and a detection switch 13; a groove is formed in one side, close to the top wall of the end screen grounding cover 4, of the side wall of the end screen grounding cover 4; the grounding electrode 6 is plate-shaped; the grounding electrode 6 is horizontally arranged in the groove; the grounding electrode 6 is connected with the top wall of the end screen grounding cover 4 through the pressing spring 7; a grounding through hole is formed in the center of the grounding electrode 6; a detection through hole is formed in the center of the top wall of the end screen grounding cover 4; the upper end of the grounding detection electrode 8 is arranged in the detection through hole, and the lower end of the grounding detection electrode 8 is arranged in the grounding through hole; an insulation limiting block 9 is arranged between the grounding detection electrode 8 and the detection through hole; one ends of the grounding detection electrode 8, the detection spring, the detection light-emitting diode 11, the battery pack 14 and the detection switch 13 are electrically connected in sequence; the other end of the detection switch 13 is connected with the end screen grounding cover 4. Earthing pole 6 level sets up in the recess, and earthing pole 6's both ends and the recess inner wall that sets up on end screen ground connection lid 4 lateral wall contact under compression spring 7's effect to better make earthing pole 6 and end screen ground connection lid 4 contact, and then make the better realization ground connection effect of pin 5.
The longitudinal section of the grounding detection electrode 8 is T-shaped; the upper end of the grounding detection electrode 8 is arranged in the detection through hole and is positioned above the insulation limiting block 9. On one hand, the end screen grounding cover 4 and the grounding detection electrode 8 are isolated from each other so as not to be contacted with each other; on the other hand, the device can play a limiting role, when the sleeve end screen is overhauled, the end screen grounding cover 4 is opened, and the detection spring cannot be excessively stretched to cause elastic change under the action of gravity, so that the service cycle is prolonged; four compression springs 7 are arranged in parallel at equal intervals; a button 12 is arranged at the top end of the detection spring; a sealing rainproof cover 10 is arranged at the top end of the end screen grounding cover 4; button 12, detection through-hole, detection emitting diode 11, group battery 14, detection switch 13 all are located sealed rain-proof cover 10. Sealed rain-proof cover 10 mainly used protects detection return circuit. Whether in normal operation or when overhauing the preliminary examination to the sleeve pipe, sealed rain-proof cover 10 all is in encapsulated situation, prevents that natural factor or human factor from causing the destruction to the detection return circuit. After the maintenance work, when recovering the sleeve pipe end screen, detect whether end screen ground connection is good when, just open sealed rain-proof cover 10, detect the completion after, with sealed rain-proof cover 10 recovery to encapsulated situation. The sealing rain cover 10 and the end screen grounding cover 4 and the base 1 and the end screen grounding cover 4 are fixedly connected through fastening bolts 3; the fastening bolt 3 is sleeved with a sealing gasket 2; the stability and the tightness of fixation are improved by arranging the seal; the button 12 and the detection spring are enclosed in a plastic housing.
When the grounding detection is carried out, the middle part of the grounding electrode 6 is reliably contacted with the end screen lead post 5 under the action of the four springs, the grounding electrode 6 is reliably connected with the end screen grounding cover 4 through the four springs through the two ends of the grounding electrode, and after the end screen grounding cover 4 is reliably connected with the base 1 through the fastening bolt 3, the body of the end screen grounding cover 4 is in a grounding state, so that the end screen lead post 5 is also in a grounding state. A cylindrical grounding through hole is reserved at the contact position of the middle of the grounding electrode 6 and the lead post 5, the tail end of the grounding detection electrode 8 penetrates through the cylindrical grounding through hole in the middle of the grounding electrode 6 and is not in contact with the cylindrical grounding through hole, so that the tail end of the grounding detection electrode 8 is directly connected with the lead post 5, and the grounding detection electrode 8 is separated from the end screen grounding cover 4 through an insulation limiting block 9, so that no electrical connection exists. The grounding detection pole 8 is provided with a detection spring and is packaged in a plastic button 12 together. After the sleeve is overhauled on site, the sleeve end screen grounding cover 4 is reliably connected with the base 1, and after the detection switch 13 on the grounding detection loop is closed, if the lead post 5 is reliably grounded, the loop is in a conducting state, the detection light emitting diode 11 is lightened, and the end screen is reliably grounded.
The lead post 5 contacts with the middle position of the grounding electrode 6, the grounding electrode 6 is connected with the end screen grounding cover 4 body, and after the maintenance is finished, the end screen grounding cover 4 is in a grounding state, so that the lead post 5 is in the grounding state. The grounding detection electrode 8 is not in contact with the end screen grounding cover 4 and the grounding electrode 6, and is directly in contact with the lead post 5. If the grounding of the lead post 5 is good, the circuit where the grounding detection electrode 8 is located is conducted, and after the detection switch 13 is closed, the detection light emitting diode 11 is lightened, so that the maintainer can visually find out the grounding state of the lead post 5.
Claims (9)
1. A high-voltage bushing tap grounding detection device comprises a base (1) and a tap grounding cover (4); the method is characterized in that: the device also comprises a grounding electrode (6), a compression spring (7) and a detection circuit; the detection loop comprises a grounding detection electrode (8), a detection spring, a detection light-emitting diode (11), a battery pack (14) and a detection switch (13); a groove is formed in one side, close to the top wall of the end screen grounding cover (4), of the side wall of the end screen grounding cover (4); the grounding electrode (6) is plate-shaped; the grounding electrode (6) is horizontally arranged in the groove; the grounding electrode (6) is connected with the top wall of the end screen grounding cover (4) through the pressing spring (7); a grounding through hole is formed in the center of the grounding electrode (6); a detection through hole is formed in the center of the top wall of the end screen grounding cover (4); the upper end of the grounding detection electrode (8) is arranged in the detection through hole, and the lower end of the grounding detection electrode (8) is arranged in the grounding through hole; the aperture of the grounding through hole is larger than the diameter of the cross section of the lower end of the grounding detection electrode (8); an insulation limiting block (9) is arranged between the grounding detection electrode (8) and the detection through hole; one ends of the grounding detection electrode (8), the detection spring, the detection light-emitting diode (11), the battery pack (14) and the detection switch (13) are electrically connected in sequence; the other end of the detection switch (13) is connected with the end screen grounding cover (4).
2. The high voltage bushing tap ground detection device of claim 1, wherein: the longitudinal section of the grounding detection electrode (8) is T-shaped; the upper end of the grounding detection electrode (8) is arranged in the detection through hole and is positioned above the insulation limiting block (9).
3. The high voltage bushing tap ground detection device of claim 2, wherein: the pressing springs (7) are arranged in parallel.
4. A high voltage bushing tap grounding detection apparatus as claimed in claim 3, wherein: four compression springs (7) are arranged in parallel at equal intervals.
5. The high voltage bushing tap ground detection device of claim 4, wherein: the top end of the detection spring is provided with a button (12).
6. The high voltage bushing tap ground detection device of claim 5, wherein: a sealing rainproof cover (10) is arranged at the top end of the end screen grounding cover (4); the button (12), the detection through hole, the detection light emitting diode (11), the battery pack (14) and the detection switch (13) are all located in the sealed rainproof cover (10).
7. The high voltage bushing tap ground detection device of claim 6, wherein: between sealed rain-proof cover (10) and the end screen ground connection lid (4) and all through fastening bolt (3) fixed connection between base (1) and end screen ground connection lid (4).
8. The high voltage bushing tap ground detection device of claim 7, wherein: and the fastening bolt (3) is sleeved with a sealing gasket (2).
9. The high voltage bushing tap ground detection device of claim 8, wherein: the button (12) and the detection spring are encapsulated in a plastic housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921234959.6U CN210604932U (en) | 2019-08-01 | 2019-08-01 | High-tension bushing end screen ground connection detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921234959.6U CN210604932U (en) | 2019-08-01 | 2019-08-01 | High-tension bushing end screen ground connection detection device |
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| Publication Number | Publication Date |
|---|---|
| CN210604932U true CN210604932U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921234959.6U Expired - Fee Related CN210604932U (en) | 2019-08-01 | 2019-08-01 | High-tension bushing end screen ground connection detection device |
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| CN (1) | CN210604932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600112A (en) * | 2020-12-14 | 2021-04-02 | 国网山东省电力公司烟台供电公司 | Special tool for grounding and opening FRB type end screen of capacitive bushing |
-
2019
- 2019-08-01 CN CN201921234959.6U patent/CN210604932U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600112A (en) * | 2020-12-14 | 2021-04-02 | 国网山东省电力公司烟台供电公司 | Special tool for grounding and opening FRB type end screen of capacitive bushing |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |