CN217521297U - Partial discharge detection device for power equipment - Google Patents
Partial discharge detection device for power equipment Download PDFInfo
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- CN217521297U CN217521297U CN202121470732.9U CN202121470732U CN217521297U CN 217521297 U CN217521297 U CN 217521297U CN 202121470732 U CN202121470732 U CN 202121470732U CN 217521297 U CN217521297 U CN 217521297U
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- cable
- partial discharge
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- guide part
- detection
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Abstract
The utility model provides a detection device is put in power equipment office belongs to partial discharge detection technical field, including guide part, detection portion and test terminal, the guide part cover is located the cable that awaits measuring outside and can be followed the cable that awaits measuring removes, the detection portion cover is located the guide part is outside and can be followed the guide part removes, the guide part is followed when the cable that awaits measuring removes, can be with curling the cable that awaits measuring is smoothed out with the fingers straightly, the detection portion is followed when the guide part removes, can by the one end of the cable that awaits measuring removes to the other end, be used for right the cable that awaits measuring detects comprehensively when the cable that awaits measuring has partial discharge, the detection portion can generate induced-current based on this partial discharge current. The embodiment of the utility model provides a compare in prior art, can avoid detecting the dead angle, can realize the comprehensive detection of the cable that awaits measuring, have detection effect good and detect the accurate reliable advantage of structure.
Description
Technical Field
The utility model belongs to the technical field of partial discharge detection, specifically a detection device is put in power equipment office.
Background
At present, the aging of the power supply cable of the power equipment is mostly caused by partial discharge, so the partial discharge detection of the power supply cable is required to be carried out regularly to eliminate the potential safety hazard.
In the prior art, the partial discharge detection to the power supply cable is realized by using a mode that a cable leads out signals mostly, but the mode is limited to the detection occasion, the high-voltage cable cannot be connected under some occasions, namely, the partial discharge detection cannot be carried out, some induction coils are close to the power supply cable, through the current mutual inductance principle, whether the induction coils generate current is observed to judge, but because some power supply cables present a curling or bending state inside the power equipment, the hidden cable cannot be detected by the induction coils, the detection effect is poor, and the accuracy of the detection result is low.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the embodiment of the utility model provides a technical problem who solves provides a detection device is put in power equipment office.
In order to solve the technical problem, the utility model provides a following technical scheme:
a partial discharge detection device for power equipment comprises a guide part, a detection part and a detection terminal,
the guide part is sleeved outside the cable to be tested and can move along the cable to be tested,
the detection part is sleeved outside the guide part and can move along the guide part,
the guide part can straighten the crimped cable to be detected when moving along the cable to be detected, the detection part can move from one end of the cable to be detected to the other end when moving along the guide part and is used for comprehensively detecting the cable to be detected,
when the cable to be detected has partial discharge, the detection portion may generate an induced current based on the partial discharge current, and the detection terminal is connected to the detection portion and configured to receive the induced current and generate a partial discharge detection result.
As a further improvement of the utility model: the guide part comprises a plurality of support rods,
bracing piece interval distribution, and form the space with the cable looks adaptation that awaits measuring between a plurality of bracing pieces, locate at the guide part cover when the cable that awaits measuring is outside, a plurality of bracing pieces are the surrounding state and laminate in the cable lateral wall that awaits measuring about the cable that awaits measuring.
As a further improvement of the utility model: the detection part comprises a support ring and a coil guide arranged outside the support ring in a winding mode, and the support rods penetrate through the support ring and are in sliding fit with the support ring.
As a further improvement of the utility model: the lead coil is spirally wound outside the support ring.
As the utility model discloses further improvement scheme again: the support ring inner wall is fixedly provided with a support, the supporting rod side wall is provided with a guide rail along the length direction, and one end of the support ring is far away from the support and is in sliding fit with the guide rail.
As a further improvement of the present invention: a plurality of clamping grooves are formed in one side of the supporting rod, and balls are movably embedded in the clamping grooves in each group.
As a further improvement of the present invention: the support ring comprises a first half and a second half,
one end of the first half body is connected with one end of the second half body, and the other end of the first half body is detachably connected with the other end of the second half body through a connecting piece.
As a further improvement of the present invention: the connecting piece comprises an inserting hole arranged at the end part of the first half body and an inserting rod arranged at the end part of the second half body,
when the first half body and the second half body are closed, the inserting rod can be inserted into the inserting hole, so that the first half body and the second half body are connected.
Compared with the prior art, the beneficial effects of the utility model are that:
the embodiment of the utility model provides a when detecting the local side to the cable that awaits measuring, can locate the guide part cover outside the cable that awaits measuring, make the one end of guide part corresponding with the one end of the cable that awaits measuring, move the detection part to the one end of guide part, the position that the detection part is located the one end of the cable that awaits measuring this moment, then move the guide part, make guide part and the relative movement of the cable that awaits measuring, can straighten out the curling cable that awaits measuring when the guide part moves, make the cable that awaits measuring can straighten and pass in the middle of the detection part, in order to improve detection effect; after the guide part is moved to the other end by the one end of the cable to be detected, the detection part can be moved to the other end by the one end of the guide part, and the position of the detection part is located at the other end of the cable to be detected.
Drawings
Fig. 1 is a schematic structural diagram of a partial discharge detection device for electrical equipment;
fig. 2 is a schematic structural diagram of a partial discharge detection device of an electrical device;
fig. 3 is a schematic structural diagram of a detection portion in an electrical equipment partial discharge detection apparatus;
FIG. 4 is an enlarged view of area A of FIG. 1;
FIG. 5 is an enlarged view of the area B in FIG. 3;
in the figure: 10-a cable to be tested, 20-a guide part, 201-a ball, 202-a support rod, 203-a guide rail, 204-a clamping groove, 30-a detection part, 301-a support ring, 3011-a first half body, 3012-a second half body, 302-a support, 303-a conductive coil, 3031-a first ring body, 3032-a second ring body, 40-a connecting piece, 401-a jack and 402-an inserted rod.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures, which are based on the orientations and positional relationships shown in the figures, and are used for convenience in describing the patent and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1 and fig. 2, the present embodiment provides a partial discharge detection apparatus for electrical equipment, which includes a guiding portion 20, a detecting portion 30 and a detecting terminal, the guide portion 20 is sleeved outside the cable 10 to be tested and can move along the cable 10 to be tested, the detecting part 30 is sleeved outside the guiding part 20 and can move along the guiding part 20, when the guiding part 20 moves along the cable 10 to be tested, the coiled cable 10 to be measured can be straightened, and when the detecting part 30 moves along the guide part 20, can move from one end of the cable to be tested 10 to the other end for carrying out overall detection on the cable to be tested 10, when the cable 10 under test has partial discharge, the detection portion 30 may generate an induced current based on the partial discharge current, the detection terminal is connected to the detection unit 30, and is configured to receive the induced current and generate a partial discharge detection result.
When the local detection is performed on the cable 10 to be detected, the guide part 20 can be sleeved outside the cable 10 to be detected, so that one end of the guide part 20 corresponds to one end of the cable 10 to be detected, the detection part 30 is moved to one end of the guide part 20, the position of the detection part 30 is located at one end of the cable 10 to be detected, then the guide part 20 is moved (the guide part 20 is pushed along the length direction of the cable 10 to be detected or the cable 10 to be detected is directly pulled), so that the guide part 20 and the cable 10 to be detected move relatively, the curved cable 10 to be detected can be straightened when the guide part 20 moves, and the cable 10 to be detected can be straightly passed through the middle of the detection part 30, so that the detection effect is improved; after the guide portion 20 moves from one end of the cable 10 to the other end, the detection portion 30 can move from one end of the guide portion 20 to the other end, and the detection portion 30 is located at the other end of the cable 10, so that the detection portion 30 can perform partial discharge detection on the entire length of the cable 10.
Referring to fig. 1 and 2, in an embodiment, the guide portion 20 includes a plurality of support rods 203, the support rods 203 are distributed at intervals, and a space adapted to the cable 10 to be tested is formed between the plurality of support rods 203, and when the guide portion 20 is sleeved outside the cable 10 to be tested, the plurality of support rods 203 surround the cable 10 to be tested and are attached to a side wall of the cable 10 to be tested.
By moving the support rods 202 along the length of the cable 10, the support rods 202 can automatically align the cable 10.
In another embodiment, the guiding portion 20 may further include two sets of clamp rings that are distributed oppositely and a plurality of connecting rods that are fixedly disposed between the two sets of clamp rings, the middle portions of the two sets of clamp rings are respectively provided with holes that are adapted to the cable 10 to be tested, and the plurality of connecting rods are distributed in a circumferential array with respect to the holes.
Through removing two sets of snap rings along cable 10 length direction that awaits measuring, two sets of snap rings can carry out automatic alignment to cable 10 that awaits measuring.
Referring to fig. 3, in an embodiment, the detecting portion 30 includes a supporting ring 301 and a wire coil 303 wound around the supporting ring 301, and a plurality of the supporting rods 202 penetrate through the supporting ring 301 and are slidably engaged with the supporting ring 301.
Before the detection starts, the support rods 202 are wound outside the cable 10 to be detected, the support ring 301 is slid to one end of the support rings 202, the support rods 202 are moved along the length direction of the cable 10 to be detected, the support rods 202 can drive the support ring 301 to move synchronously, when the cable 10 to be detected has partial discharge, the wire coil 303 can generate induction current according to the partial discharge current, and the induction current is input to the detection terminal to generate a detection result, so that the partial discharge detection of the cable 10 to be detected is realized.
In the above embodiment, the coil 303 is wound around the support ring 301 in a spiral structure.
In another embodiment, the detecting portion 30 may further include an induction coil, and the plurality of supporting rods 202 penetrate through the induction coil and are slidably connected with the induction coil, when the cable 10 to be detected has partial discharge, according to the principle of current mutual inductance, the induction coil generates corresponding induction current and inputs the induction current to the detecting terminal to generate a detecting result, so as to achieve the partial discharge detection of the cable 10 to be detected.
In the above embodiment, the support ring 301 has a circular ring structure, but may also have a square ring structure, which is not limited herein.
Referring to fig. 1 and fig. 2, in an embodiment, a support 302 is fixedly disposed on an inner wall of the support ring 301, a guide rail 203 is disposed on a side wall of the support bar 202 along a length direction, and one end of the support 302 away from the support ring 301 is in sliding fit with the guide rail 203, so that the support ring 301 and the support bar 202 generate relative movement, and the support ring 301 can completely move from one end of the cable 10 to be detected to the other end, thereby realizing the overall partial discharge detection of the cable 10 to be detected.
In an embodiment, the detection terminal may be an ammeter, and may also be a voltmeter, when the detection terminal is a voltmeter, the input end of the voltmeter may be connected to a converter, the converter is utilized to convert the induced current into a voltage signal in advance, and then the voltage signal is transmitted to the voltmeter to generate a detection result, and whether the partial discharge phenomenon exists at the current position of the cable 10 to be detected is determined by observing the change of the pointer of the ammeter or the voltmeter.
Referring to fig. 4, in an embodiment, a plurality of slots 204 are formed on one side of the supporting rod 202, balls 201 are movably embedded in each of the slots 204, and through the arrangement of the balls 201, when the supporting rod 203 moves along the cable 10 to be tested, friction force can be reduced, and convenience in movement is improved.
Referring to fig. 3, in one embodiment, the support ring 301 includes a first half 3011 and a second half 3012, the first half 3011 and the second half 3012 are connected to each other at one end and detachably connected at the other end by a connecting member 40.
Before detection, the first half body 3011 and the second half body 3012 may be expanded to form a gap at one end of the first half body 3011 and the second half body 3012, into which a cable 10 to be detected can enter, when the cable 10 to be detected enters between the first half body 3011 and the second half body 3012 from the gap, the first half body 3011 and the second half body 3012 are closed, the first half body 3011 and the second half body 3012 are connected into a whole by the connecting piece 40, and after detection is finished, one end of the first half body 3011 and one end of the second half body 3012 may be detached to expand the first half body 3011 and the second half body 3012 again, and the cable 10 to be detected is taken out from the gap.
The above embodiment provides a mounting method for a cable 10 to be tested, and in another embodiment, one side of the support ring 301 may be provided with a notch, so as to facilitate mounting of the cable 10 to be tested.
Referring to fig. 5, in an embodiment, the connecting member 40 includes a plug hole 401 formed at an end of the first half body 3011 and a plug rod 402 disposed at an end of the second half body 3012, and when the first half body 3011 and the second half body 3012 are closed, the plug rod 402 can be inserted into the plug hole 401 to connect the first half body 3011 and the second half body 3012.
In another embodiment, the connecting member 40 may further include a sleeve movably sleeved on an end of the first half body 3011 and a rubber ring disposed on an inner wall of the sleeve, when the first half body 3011 and the second half body 3012 are closed, one end of the sleeve is slidably sleeved outside the second half body 3012, the rubber ring is attached to an outer wall of the second half body 3012, and the first half body 3011 and the second half body 3012 are connected by using a damping effect between the rubber ring and the second half body 3012.
The embodiment of the utility model provides a when detecting the local side to the cable 10 that awaits measuring, can locate the outside of cable 10 that awaits measuring with guide portion 20 cover, make the one end of guide portion 20 corresponding with the one end of cable 10 that awaits measuring, move detection portion 30 to the one end of guide portion 20, detection portion 30 position is located the one end of cable 10 that awaits measuring this moment, then move guide portion 20 (promote guide portion 20 or directly twitch cable 10 that awaits measuring along cable 10 length direction that awaits measuring), make guide portion 20 and cable 10 that awaits measuring move relatively, can straighten out curved cable 10 that awaits measuring when guide portion 20 moves, make cable 10 that awaits measuring can straighten out and pass in the middle of detection portion 30, in order to improve detection effect; after the guide part 20 is moved to the other end by the one end of the cable 10 that awaits measuring, can move the detection part 30 to the other end by the one end of guide part 20, the position of detection part 30 is located the other end of the cable 10 that awaits measuring this moment, so make detection part 30 can carry out the partial discharge to the whole length of the cable 10 that awaits measuring and detect, compare in prior art, can avoid detecting the dead angle, can realize the comprehensive detection of the cable 10 that awaits measuring, have detection effect and detect the accurate reliable advantage of structure.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (8)
1. An electric power equipment partial discharge detection device is characterized by comprising a guide part, a detection part and a detection terminal,
the guide part is sleeved outside the cable to be tested and can move along the cable to be tested,
the detection part is sleeved outside the guide part and can move along the guide part,
the guide part can straighten the coiled cable to be detected when moving along the cable to be detected, the detection part can move from one end of the cable to be detected to the other end when moving along the guide part and is used for comprehensively detecting the cable to be detected,
when the cable to be detected has partial discharge, the detection part may generate an induced current based on the partial discharge current, and the detection terminal is connected to the detection part and configured to receive the induced current and generate a partial discharge detection result.
2. The partial discharge detection device for electric power equipment according to claim 1, wherein the guiding portion comprises a plurality of supporting rods,
bracing piece interval distribution, and form the space with the cable looks adaptation that awaits measuring between a plurality of bracing pieces, locate at the guide part cover when the cable that awaits measuring is outside, a plurality of bracing pieces are the surrounding state and laminate in the cable lateral wall that awaits measuring about the cable that awaits measuring.
3. The partial discharge detection device for power equipment according to claim 2, wherein the detection portion comprises a support ring and a conductive coil wound around the outside of the support ring, and a plurality of support rods penetrate through the support ring and are in sliding fit with the support ring.
4. The partial discharge detection device for power equipment according to claim 3, wherein the conductive coil is wound around the outside of the support ring in a spiral structure.
5. The partial discharge detection device for electrical equipment according to claim 3 or 4, wherein a support is fixedly disposed on an inner wall of the support ring, a guide rail is disposed on a side wall of the support rod along a length direction, and an end of the support away from the support ring is slidably engaged with the guide rail.
6. The partial discharge detection device for electrical equipment according to claim 2, wherein a plurality of slots are formed on one side of the support rod, and a ball is movably embedded in each slot.
7. The partial discharge detection device for power equipment according to claim 3, wherein the support ring comprises a first half body and a second half body,
one end of the first half body is connected with one end of the second half body, and the other end of the first half body is detachably connected with the other end of the second half body through a connecting piece.
8. The partial discharge detection device of claim 7, wherein the connection member comprises a plug hole formed at an end of the first half body and a plug rod formed at an end of the second half body,
when the first half body and the second half body are closed, the insertion rod can be inserted into the insertion hole so as to realize connection between the first half body and the second half body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470732.9U CN217521297U (en) | 2021-06-30 | 2021-06-30 | Partial discharge detection device for power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470732.9U CN217521297U (en) | 2021-06-30 | 2021-06-30 | Partial discharge detection device for power equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217521297U true CN217521297U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121470732.9U Active CN217521297U (en) | 2021-06-30 | 2021-06-30 | Partial discharge detection device for power equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217521297U (en) |
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2021
- 2021-06-30 CN CN202121470732.9U patent/CN217521297U/en active Active
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