CN215576707U - Transformer substation prevents insulating inspection device of alternating current system of conflagration - Google Patents
Transformer substation prevents insulating inspection device of alternating current system of conflagration Download PDFInfo
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- CN215576707U CN215576707U CN202120972394.2U CN202120972394U CN215576707U CN 215576707 U CN215576707 U CN 215576707U CN 202120972394 U CN202120972394 U CN 202120972394U CN 215576707 U CN215576707 U CN 215576707U
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- 238000007689 inspection Methods 0.000 title claims abstract description 73
- 239000007921 spray Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000013519 translation Methods 0.000 claims description 6
- 239000010902 straw Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 230000009194 climbing Effects 0.000 abstract description 5
- 230000009977 dual effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 230000008859 change Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model discloses an alternating current system insulation inspection device for preventing fire of a transformer substation, which comprises: the inspection box is provided with a camera for inspection above, a storage cavity for storing the fire extinguishing dry powder is arranged inside the inspection box, a spray nozzle is arranged above the inspection box, an absorption unit which absorbs the fire extinguishing dry powder in the storage cavity and sprays out from the spray nozzle is fixed on the surface of the inspection box, the absorption unit is communicated with the spray nozzle through a hose, an adjusting mechanism for adjusting the position of the spray nozzle is arranged on the surface of the inspection box, the inspection box monitors the surrounding condition of the transformer substation by using the camera in the inspection process, if the conditions of sparks, smoke and the like are found, the inspection box can climb above the power equipment by using the climbing component, the position to appearing mars, smog realizes closely monitoring, and the suction unit can be put out a fire with the dry powder suction of putting out a fire of storage in the chamber and through the shower nozzle blowout realization, prevents to fire, avoids the loss, has played the dual function of patrolling and examining and putting out a fire.
Description
Technical Field
The utility model relates to the technical field of alternating current system insulation inspection devices, in particular to an alternating current system insulation inspection device for preventing fire of a transformer substation.
Background
The alternating current system insulation inspection device can be used for preventing a fire from being inspected and used in a transformer substation, the existing transformer substation insulation inspection device often uses a mobile robot to inspect, the mobile robot has the defect that inspection and monitoring can be carried out only on the ground, fire can not be timely extinguished when a fire occurs, when the fire occurs, power equipment collapses, the inspection device can be broken down, and inspection can not be carried out well.
Therefore, the alternating current system insulation inspection device for preventing fire of the transformer substation is provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides the alternating current system insulation inspection device for preventing the fire of the transformer substation.
In order to achieve the above object, the present invention provides an insulation inspection device for an ac system of a substation for preventing fire, comprising:
the system comprises a patrol box, a camera for patrol inspection is arranged above the patrol box, a storage cavity for storing fire extinguishing dry powder is arranged inside the patrol box, a spray nozzle is arranged above the patrol box, an suction unit which sucks the fire extinguishing dry powder in the storage cavity and sprays the fire extinguishing dry powder from the spray nozzle is fixed on the surface of the patrol box, the suction unit is communicated with the spray nozzle through a hose, and an adjusting mechanism for adjusting the position of the spray nozzle is arranged on the surface of the patrol box;
one side of inspecting the box is provided with the subassembly that climbs, and the subassembly that climbs includes last grip block, the lower grip block that sets up from top to bottom, the fixed welding in side of inspecting the box has the second switching piece, the side of second switching piece transversely is fixed with the third flexible unit that promotes down the grip block along inspecting box bottom surface parallel translation, the last fixed surface of second switching piece has along the flexible second flexible unit of inspecting box direction of height, the fixed welding in upper end of second flexible unit has first switching piece, the side transverse fixation of first switching piece is provided with the first flexible unit that promotes the grip block along inspecting box bottom surface parallel translation.
As a further optimization of the above scheme, the adjusting mechanism includes a first pushing unit fixed on the surface of the inspection box, a first rotating unit fixed on the moving end of the first pushing unit, and a second pushing unit fixed on the output end of the first rotating unit, the first pushing unit is arranged in parallel along the upper surface of the inspection box, the first rotating unit is perpendicular to the upper surface of the inspection box, and the second pushing unit is arranged in parallel along the height direction of the inspection box.
In the embodiment, the first rotating unit can use a motor and other devices, the second pushing unit and the first pushing unit can use an electric push rod, an air cylinder and other devices, the first pushing unit controls the change of the parallel position of the spray head along the upper surface of the inspection box when being stretched, the second pushing unit controls the change of the parallel position of the spray head along the height direction of the inspection box when being stretched, and the first rotating unit controls the spray head to rotate, so that the spray heads face different directions, and further different purposes of conveniently extinguishing fire are achieved;
it should be noted that the bottom of the inspection box is provided with a roller capable of moving on the ground, the camera on the upper surface of the inspection box can be conveniently rotated and used for power inspection, the camera and the roller are both in the prior art, and details are not described herein;
patrol and examine the in-process, patrol and examine the box and utilize the condition around the camera monitoring transformer substation, when discovering conditions such as mars, smog, patrol and examine the usable subassembly that climbs of box and climb to the power equipment top, realize closely monitoring to the position that mars, smog appear, and the suction unit can be with the dry powder suction of putting out a fire of storage in the chamber and realize putting out a fire through the shower nozzle blowout, prevent to fire, avoid the loss, played and patrolled and examined and put out a fire dual function.
As the further optimization of the scheme, the upper clamping plate and the lower clamping plate are both in rectangular plate structures, the upper clamping plate and the lower clamping plate are arranged on one side of the inspection box, and the surface of one side, close to the inspection box, of the upper clamping plate and the surface of one side, close to the inspection box, of the lower clamping plate are rough surfaces.
When the equipment ascends, the first telescopic unit stretches and contracts to enable the upper clamping plate to move to clamp the power equipment between the inspection box and the upper clamping plate, at the moment, the lower clamping plate is stretched and contracted through the third telescopic unit to enable the lower clamping plate to be pressed and held on the power equipment, then the first telescopic unit is started to loosen the upper clamping plate from the surface of the power equipment, the second telescopic unit is started to enable the upper clamping plate to ascend, the upper clamping plate is clamped on the power equipment again when ascending, at the moment, the third telescopic unit is controlled to push the lower clamping plate to be far away from the surface of the power equipment, the second telescopic unit is contracted to drive the lower clamping plate to ascend upwards, the operation is repeated, the inspection box can ascend to the upper part of the power equipment and is convenient to be used for close-distance monitoring, and the power equipment is clamped between the upper clamping plate, the inspection box and the lower clamping plate and the inspection box, and is convenient to be applicable to most of power equipment, such as utility poles and the like.
As the further optimization of above-mentioned scheme, suction unit lower extreme intercommunication has the straw that stretches into storage chamber bottom, one side of patrolling and examining the box is provided with the inside and outside notch of intercommunication storage chamber, the pull is provided with the collection box in the notch, the top opening of collecting the box corresponds the below at the shower nozzle, be provided with the promotion unit that promotes the collection box and remove in the notch on the inner wall in storage chamber.
In this embodiment, the suction unit can use devices such as suction pump, the straw extends to the bottom in storage chamber, can be with the complete suction of the dry powder of putting out a fire of storage in the storage chamber, utilize completely, and collect the below that the box corresponds at the shower nozzle, when the shower nozzle department blowout dry powder of putting out a fire was put out a fire, drop after putting out a fire the dry powder and collect in collecting the box, can not form extravagantly, the promotion unit can use devices such as electric putter, the promotion unit can drive and collect the box and accomodate in the storage chamber, when not using to collect the box, it can not influence and patrols and examines the box and remove to collect the box.
As a further optimization of the scheme, a circulating pipe is arranged on one side, close to the storage cavity, of the collecting box and is communicated between the interior of the collecting box and the storage cavity, and a one-way valve for enabling materials at the collecting box to enter the storage cavity in a one-way mode is arranged in the circulating pipe.
It should be noted that, when the suction unit is started, the fire extinguishing dry powder in the storage cavity is sucked out, negative pressure is generated in the storage cavity, the negative pressure sucks the fire extinguishing dry powder collected in the collection box into the storage cavity from the circulating pipe for repeated use, the purposes of energy conservation and continuous fire extinguishing are achieved, and the fire extinguishing dry powder is fully recycled under the condition that a certain amount of fire extinguishing dry powder can be carried.
As a further optimization of the above scheme, the outer surface of the hose is sleeved with a fireproof layer.
Furthermore, the hose is telescopic, the position change of the spray head is conveniently adapted, and the fireproof layer on the surface of the hose has a good fireproof effect.
As a further optimization of the scheme, the outer surface of the inspection box is coated with an insulating layer.
Wherein, the outside of patrolling and examining the box is protected through the insulating layer, and the power supply of giving climbing subassembly, adjustment mechanism, camera, suction unit power supply independently sets up in the inside of patrolling and examining the box, and whole device is difficult for receiving outside leakage influence and damage.
The alternating current system insulation inspection device for preventing fire of the transformer substation has the following beneficial effects:
according to the alternating current system insulation inspection device for preventing fire of the transformer substation, in the inspection process, the inspection box monitors the conditions around the transformer substation by using the camera, when the conditions such as sparks, smoke and the like are found, the inspection box can climb above the power equipment by using the climbing assembly to realize close-range monitoring on the positions where the sparks and the smoke occur, and the suction unit can suck out the fire extinguishing dry powder stored in the storage cavity and spray out the fire extinguishing dry powder through the spray head to realize fire extinguishing, so that fire is prevented from being started, loss is avoided, and double functions of inspection and fire extinguishing are achieved.
There have been disclosed in detail certain embodiments of the utility model with reference to the following description and drawings, and it is to be understood that the embodiments of the utility model are not limited thereby, but are intended to cover within the spirit and scope of the appended claims, many changes, modifications, and equivalents.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of a climbing assembly of the present invention;
fig. 3 is an enlarged view of the structure at a in fig. 1 according to the present invention.
In the figure: the device comprises a patrol box 1, a storage cavity 2, a camera 3, a hose 4, a spray head 5, an aspiration unit 6, an adjusting mechanism 7, a first transfer block 8, a first telescopic unit 9, an upper clamping plate 10, a second telescopic unit 11, a second transfer block 12, a third telescopic unit 13, a lower clamping plate 14, a collection box 15, a suction pipe 16, a pushing unit 17, a notch 18, a circulating pipe 19 and a one-way valve 20.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model.
It should be noted that when an element is referred to as being "disposed on," or provided with "another element, it can be directly on the other element or intervening elements may also be present, when an element is referred to as being" connected, "or coupled to another element, it can be directly on the other element or intervening elements may be present, and" fixedly coupled "means that the element is fixedly coupled in many ways, which are not intended to be within the scope of the present disclosure, the terms" vertical, "" horizontal, "" left, "" right, "and the like are used herein for illustrative purposes only and are not intended to be a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items;
referring to the attached drawings 1-3 in the specification, the utility model provides a technical scheme: the utility model provides an alternating current system insulation inspection device that transformer substation prevented conflagration, includes:
the system comprises a patrol box 1, a camera 3 for patrol is arranged above the patrol box 1, a storage cavity 2 for storing fire extinguishing dry powder is arranged inside the patrol box 1, a spray head 5 is arranged above the patrol box 1, a suction unit 6 for sucking the fire extinguishing dry powder in the storage cavity 2 and spraying the fire extinguishing dry powder from the spray head 5 is fixed on the surface of the patrol box 1, the suction unit 6 is communicated with the spray head 5 through a hose 4, and an adjusting mechanism 7 for adjusting the position of the spray head 5 is arranged on the surface of the patrol box 1;
one side of patrolling and examining box 1 is provided with the subassembly that climbs, the subassembly that climbs includes the last grip block 10 that sets up from top to bottom, lower grip block 14, the side fixed weld of patrolling and examining box 1 has second switching piece 12, the side of second switching piece 12 transversely is fixed with promotes down grip block 14 along the flexible unit 13 of the third of patrolling and examining 1 bottom surface parallel translation of box, the last fixed surface of second switching piece 12 has along the flexible unit 11 of the 1 direction of height of patrolling and examining box, the upper end fixed weld of the flexible unit 11 of second has first switching piece 8, the side transversely fixed of first switching piece 8 is provided with the first flexible unit 9 that promotes grip block 10 along the patrolling and examining 1 bottom surface parallel translation of box.
Adjusting mechanism 7 is including fixing the first promotion unit on patrolling and examining box 1 surface, fixing at the first rotation unit that first promotion unit removed the end, fixing the second promotion unit at first rotation unit output, and first promotion unit is along patrolling and examining the upper surface parallel arrangement of box 1, and the box 1 upper surface is patrolled and examined to first rotation unit perpendicular to, and the second promotes the unit along patrolling and examining the direction of height parallel arrangement of box 1.
In this embodiment, the first rotating unit may use a motor or other devices, the second pushing unit and the first pushing unit may use an electric push rod, an air cylinder or other devices, the first pushing unit controls the change of the parallel position of the spray head 5 along the upper surface of the inspection box 1 when being stretched, the second pushing unit controls the change of the parallel position of the spray head 5 along the height direction of the inspection box 1 when being stretched, and the first rotating unit controls the spray head 5 to rotate, so that the spray head 5 is oriented differently, and further different purposes of conveniently extinguishing fire are achieved;
it should be noted that the bottom of the inspection box 1 is provided with a roller which can move on the ground, the camera 3 on the upper surface of the inspection box 1 can be rotated conveniently and used for power inspection, the camera 3 and the roller are both in the prior art, and details are not described herein;
patrol and examine the in-process, patrol and examine the condition around box 1 utilizes camera 3 monitoring transformer substation, when finding condition such as mars, smog, patrol and examine the usable subassembly that climbs of box 1 and climb to the power equipment top, realize closely monitoring to the position that mars, smog appear, and suction unit 6 can be with the dry powder suction of putting out a fire of storage in the storage chamber 2 and realize putting out a fire through 5 blowout of shower nozzle, prevent to fire, avoid the loss, played and patrolled and examined and put out a fire dual function.
The upper clamping plate 10 and the lower clamping plate 14 are both rectangular plate-shaped structures, the upper clamping plate 10 and the lower clamping plate 14 are arranged on one side of the inspection box 1, and the surface of one side, close to the inspection box 1, of the upper clamping plate 10 and the surface of one side, close to the inspection box 1, of the lower clamping plate 14 are rough surfaces.
When equipment ascends on the power equipment, the first telescopic unit 9 is stretched to enable the upper clamping plate 10 to move to clamp the power equipment between the inspection box 1 and the upper clamping plate 10, at the moment, the third telescopic unit 13 is used for stretching the lower clamping plate 14 to enable the lower clamping plate 14 to be pressed on the power equipment, then the first telescopic unit 9 is started to enable the upper clamping plate 10 to be loosened from the surface of the power equipment, the second telescopic unit 11 is started to enable the upper clamping plate 10 to ascend, the upper clamping plate 10 is clamped on the power equipment again when ascending, at the moment, the third telescopic unit 13 is controlled to push the lower clamping plate 14 to be far away from the surface of the power equipment, the second telescopic unit 11 is contracted to drive the lower clamping plate 14 to ascend, and the operation is repeated, so that the inspection box 1 can ascend to the upper side of the power equipment, the inspection box 1 is conveniently used for short-distance monitoring, and the power equipment is clamped between the upper clamping plate 10 and the inspection box 1 and the lower clamping plate 14, The inspection box is convenient to be suitable for most of electric equipment such as telegraph poles and the like among the inspection boxes 1.
The lower end of the suction unit 6 is communicated with a suction pipe 16 extending into the bottom of the storage cavity 2, one side of the inspection box 1 is provided with a notch 18 communicated with the inside and the outside of the storage cavity 2, a collection box 15 is arranged in the notch 18 in a drawing mode, the upper portion of the collection box 15 is opened and corresponds to the lower portion of the spray head 5, and a pushing unit 17 for pushing the collection box 15 to move in the notch 18 is arranged on the inner wall of the storage cavity 2.
In this embodiment, suction unit 6 can use devices such as suction pump, straw 16 extends to the bottom of storage chamber 2, can be with the complete suction of the dry powder of putting out a fire of storage chamber 2 in storage chamber 2, it is complete to utilize, and collect box 15 and correspond the below at shower nozzle 5, when shower nozzle 5 department blowout dry powder was put out a fire, drop after putting out a fire the dry powder and collect in collecting box 15, can not form extravagantly, push unit 17 can use devices such as electric putter, push unit 17 can drive and collect box 15 and accomodate in storage chamber 2, when not using collecting box 15, it can not influence patrolling and examining box 1 and remove to collect box 15.
A circulating pipe 19 is arranged on one side of the collecting box 15 close to the storage cavity 2, the circulating pipe 19 is communicated between the interior of the collecting box 15 and the storage cavity 2, and a one-way valve 20 for allowing materials at the collecting box 15 to enter the storage cavity 2 in a one-way mode is arranged in the circulating pipe 19.
It should be noted that, when the suction unit 6 is started, the dry extinguishing powder in the storage chamber 2 is sucked out, negative pressure is generated in the storage chamber 2, and the negative pressure sucks the dry extinguishing powder collected in the collection box 15 into the storage chamber 2 from the circulation pipe 19 for recycling, so as to achieve the purposes of energy saving and continuous fire extinguishing, and perform sufficient recycling on the dry extinguishing powder under the condition that a certain amount of dry extinguishing powder can be carried.
The outer surface of the hose 4 is sleeved with a fireproof layer.
Furthermore, the hose 4 is telescopic, the position change of the spray head 5 is convenient to adapt, and the fireproof layer on the surface of the hose 4 has a good fireproof effect.
The outer surface of the inspection box 1 is coated with an insulating layer.
Wherein, the outside of patrolling and examining box 1 is protected through the insulating layer, and the power of giving the power supply of climbing subassembly, adjustment mechanism 7, camera 3, suction unit 6 independently sets up in the inside of patrolling and examining box 1, and the integrated device is difficult for receiving outside leakage influence and damaging.
The embodiment provides a pair of alternating current system insulation inspection devices for preventing fire in transformer substation, the working process is as follows:
patrol and examine the in-process, patrol and examine the condition around box 1 utilizes camera 3 monitoring transformer substation, when finding condition such as mars, smog, patrol and examine the usable subassembly that climbs of box 1 and climb to the power equipment top, realize closely monitoring to the position that mars, smog appear, and suction unit 6 can be with the dry powder suction of putting out a fire of storage in the storage chamber 2 and realize putting out a fire through 5 blowout of shower nozzle, prevent to fire, avoid the loss, played and patrolled and examined and put out a fire dual function.
It should be understood that the present invention is not limited to the particular embodiments described herein, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. The utility model provides an alternating current system insulation inspection device that transformer substation prevented conflagration which characterized in that includes:
the system comprises a patrol box, a camera for patrol inspection is arranged above the patrol box, a storage cavity for storing fire extinguishing dry powder is arranged inside the patrol box, a spray nozzle is arranged above the patrol box, an suction unit which sucks the fire extinguishing dry powder in the storage cavity and sprays the fire extinguishing dry powder from the spray nozzle is fixed on the surface of the patrol box, the suction unit is communicated with the spray nozzle through a hose, and an adjusting mechanism for adjusting the position of the spray nozzle is arranged on the surface of the patrol box;
one side of inspecting the box is provided with the subassembly that climbs, and the subassembly that climbs includes last grip block, the lower grip block that sets up from top to bottom, the fixed welding in side of inspecting the box has the second switching piece, the side of second switching piece transversely is fixed with the third flexible unit that promotes down the grip block along inspecting box bottom surface parallel translation, the last fixed surface of second switching piece has along the flexible second flexible unit of inspecting box direction of height, the fixed welding in upper end of second flexible unit has first switching piece, the side transverse fixation of first switching piece is provided with the first flexible unit that promotes the grip block along inspecting box bottom surface parallel translation.
2. The alternating current system insulation inspection device for preventing fire of transformer substation according to claim 1, characterized in that: adjustment mechanism is including fixing the first promotion unit on patrolling and examining box surface, fixing first promotion unit and removing the first rotation unit of end, fixing the second promotion unit at first rotation unit output, and first promotion unit is along patrolling and examining the upper surface parallel arrangement of box, and the box was patrolled and examined to first rotation unit perpendicular to, and the second promotes the unit along patrolling and examining the direction of height parallel arrangement of box.
3. The alternating current system insulation inspection device for preventing fire of transformer substation according to claim 1, characterized in that: go up the grip block and all be rectangle platelike structure with lower grip block, go up the grip block, lower grip block sets up in the one side of patrolling and examining the box, and go up the grip block, one side surface that the grip block is close to the box of patrolling and examining down is the rough surface.
4. The alternating current system insulation inspection device for preventing fire of transformer substation according to claim 1, characterized in that: suction unit lower extreme intercommunication has the straw that stretches into storage chamber bottom, one side of patrolling and examining the box is provided with the inside and outside notch of intercommunication storage chamber, the pull is provided with the collection box in the notch, the top opening of collecting the box corresponds the below at the shower nozzle, be provided with the promotion unit that promotes the collection box and remove in the notch on the inner wall in storage chamber.
5. The alternating current system insulation inspection device for preventing fire of transformer substation according to claim 4, characterized in that: the collecting box is characterized in that a circulating pipe is arranged on one side, close to the storage cavity, of the collecting box and communicated between the interior of the collecting box and the storage cavity, and a one-way valve for allowing materials at the collecting box to enter the storage cavity in a one-way mode is arranged in the circulating pipe.
6. The alternating current system insulation inspection device for preventing fire of transformer substation according to claim 1, characterized in that: the outer surface of the hose is sleeved with a fireproof layer.
7. The alternating current system insulation inspection device for preventing fire of transformer substation according to claim 1, characterized in that: the outer surface of the inspection box is coated with an insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120972394.2U CN215576707U (en) | 2021-05-08 | 2021-05-08 | Transformer substation prevents insulating inspection device of alternating current system of conflagration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120972394.2U CN215576707U (en) | 2021-05-08 | 2021-05-08 | Transformer substation prevents insulating inspection device of alternating current system of conflagration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215576707U true CN215576707U (en) | 2022-01-18 |
Family
ID=79859304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120972394.2U Active CN215576707U (en) | 2021-05-08 | 2021-05-08 | Transformer substation prevents insulating inspection device of alternating current system of conflagration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215576707U (en) |
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2021
- 2021-05-08 CN CN202120972394.2U patent/CN215576707U/en active Active
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