CN107045935A - Anti-rain capacitor and surge generator - Google Patents

Anti-rain capacitor and surge generator Download PDF

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Publication number
CN107045935A
CN107045935A CN201710099206.8A CN201710099206A CN107045935A CN 107045935 A CN107045935 A CN 107045935A CN 201710099206 A CN201710099206 A CN 201710099206A CN 107045935 A CN107045935 A CN 107045935A
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CN
China
Prior art keywords
rain
capacitor
proof
capacitor body
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710099206.8A
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Chinese (zh)
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CN107045935B (en
Inventor
丁玉剑
姚修远
刘桂箐
姜德喜
刘玉胜
周松松
周军
谷琛
王晰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STATE GRID JIANGXI ELECTRIC POWER Co
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Original Assignee
STATE GRID JIANGXI ELECTRIC POWER Co
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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Priority to CN201710099206.8A priority Critical patent/CN107045935B/en
Publication of CN107045935A publication Critical patent/CN107045935A/en
Application granted granted Critical
Publication of CN107045935B publication Critical patent/CN107045935B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10Housing; Encapsulation
    • H01G2/103Sealings, e.g. for lead-in wires; Covers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

The invention provides a kind of anti-rain capacitor and surge generator.The anti-rain capacitor includes:Capacitor body and rain insensitive device;Wherein, outer wall complete cycle of the rain insensitive device along capacitor body sets and is in predetermined angle with the outer wall of capacitor body, and rain insensitive device is used for rain cover;The first end of rain insensitive device is connected with the outer wall of capacitor body, and the second end of rain insensitive device is freely set in the lower section of capacitor body.The anti-rain capacitor that the present invention is provided can prevent rainwater from dropping on the bottom plate of capacitor body by rain insensitive device rain cover, so the device can prevent ponding below capacitor bottom, and then significantly shorten the natural drying time and test period of capacitor;In addition, the anti-rain capacitor bottom is without ponding, while improving the insulating properties of capacitor, capacitor bottom can be prevented breakdown, also improve the security performance of experiment.

Description

Rain-proof capacitor and impact generator
Technical Field
The invention relates to the technical field of power systems, in particular to a rain-proof capacitor and an impact generator.
Background
The impulse voltage generator is key equipment for performing tests such as impulse withstand voltage of GIS (Geographic Information System) equipment and impulse discharge in temporary places in a transformer station, and the impulse current generator is key equipment for testing the stability of electric equipment enduring impulse current, and high voltage or high current can be generated in the test process, so that the impulse generator has high requirements on the insulation performance of the impulse generator.
Generally, the impact generator is required to be tested outdoors for a long time, and inevitably is exposed to rain, and after rain, the test must be performed after the equipment is dried. And drying the towel by adopting a natural drying mode after wiping. Referring to fig. 1, a general impact generator includes a plurality of columns 1', at least one support plate 2', and 3' capacitors. The bottom ends of the plurality of upright posts 1' are embedded below the ground, at least one support plate 2' is arranged among the plurality of upright posts 1' in parallel along the vertical direction, and the bottom surface of each capacitor 3' is connected with one support plate 2 '. Referring to fig. 2, in the conventional impact generator, when rainwater hits the outer wall of the capacitor 3 'under the impact force of the outer wall of the capacitor 3' and the gravity of the rainwater itself, the rainwater falls along the capacitor (arrow mark direction in fig. 2) and permeates into the gap between the capacitor 3 'and the support plate 2', so that water accumulation occurs in the gap between the capacitor 3 'and the support plate 2', and the accumulated water is difficult to treat due to the concealment of the gap, and the period and efficiency of the test are seriously affected by the long period of natural drying. In addition, the hidden accumulated water is difficult to treat, the natural drying speed is slow, and whether the water is dry or not is difficult to identify, so that the complete drying before the equipment test cannot be ensured, and the situation that the bottom plate of the capacitor 3' breaks down along the contact surface when the equipment generates impulse voltage in a subsequent test is often generated.
For preventing ponding between condenser 3' and the backup pad 2', seal through sealed the gap of gluing between condenser 3' and backup pad 2', but, because impulse generator need frequently remove and dismantle, sealed glue 4' very easily ftractures after long-term the use, when outdoor operations suffered rain, the rainwater was very easy to be followed and is oozed sealed the clearance of gluing and get into and form ponding between condenser and the insulating backup pad, consequently still did not solve the phenomenon that the condenser bottom plate was punctured.
Disclosure of Invention
In view of the above, the invention provides a rain-proof capacitor and an impact generator, and aims to solve the problem that a bottom plate of the capacitor is broken down due to accumulated water in a gap between the capacitor and a supporting plate caused by rain.
In one aspect, the present invention provides a rain-proof capacitor, the apparatus comprising: a capacitor body and a rain-proof device; the rainproof device is arranged along the whole periphery of the outer wall of the capacitor body and forms a preset angle with the outer wall of the capacitor body, and the rainproof device is used for shielding rainwater; the first end of the rain-proof device is connected with the outer wall of the capacitor body, and the second end of the rain-proof device is freely arranged below the capacitor body.
Further, in the above-mentioned rain-proof condenser, the rain insensitive device includes: a plurality of water baffles; each water baffle is arranged along the whole circumference of the outer wall of the capacitor body and forms a preset angle with the outer wall of the capacitor body; the first end of each water baffle is connected with the outer wall of the capacitor body, and the second end of each water baffle is freely arranged below the capacitor body; the side edges of any two adjacent water baffles are connected.
Furthermore, in the rain-proof capacitor, each water baffle is a silicon rubber plate.
Furthermore, in the rain-proof capacitor, a first sealant is arranged between any two adjacent water baffles.
Furthermore, in the rain-proof capacitor, the water baffles are integrally formed.
Furthermore, in the rain-proof capacitor, the rain-proof device is bonded with the capacitor body through a second sealant.
The rain-proof capacitor provided by the invention can prevent rainwater from dropping on the bottom plate of the capacitor body by shielding the rainwater through the rain-proof device, so that the device can prevent water from accumulating below the bottom plate of the capacitor, thereby greatly shortening the natural drying time and the test period of the capacitor; meanwhile, the rain-proof capacitor bottom plate has no accumulated water, so that the insulating property of the capacitor is improved, the capacitor bottom plate can be prevented from being broken down, and the safety performance of the test is also improved.
In another aspect, the present invention provides an impulse generator, comprising: at least one backup pad and many stands still include: at least one of the rain-proof capacitors; each stand column is connected through the support plate, and the bottom surface of the rain-proof capacitor is connected with the support plate.
Further, in the above impact generator, the second end of the rain guard is disposed below the support plate.
Furthermore, in the above-mentioned impact generator, a rain-proof coating is filled between the rain-proof capacitor and the supporting plate.
Further, in the above impact generator, the rain-proof coating is an RTV coating.
Because the rain-proof capacitor has the above effects, the impact generator with the rain-proof capacitor also has corresponding technical effects. In addition, the impact generator provided by the invention is provided with the rain-proof capacitor, so that no accumulated water is reserved between the rain-proof capacitor and the supporting plate, and the problems that the accumulated water between the capacitor and the supporting plate is difficult to treat and dry are solved, so that the drying time and the test efficiency of the impact generator are further improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a prior art impulse generator;
FIG. 2 is a schematic view of a prior art rainwater flow;
FIG. 3 is a schematic view of a portion of an impact generator according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional block diagram of an impact generator provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural view of a water guard provided in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Rain-proof capacitor embodiment:
referring to fig. 3, fig. 3 is a preferred structure of the rain-proof capacitor provided in the embodiment of the present invention. As shown, the rain-proof capacitor 3 may include: a capacitor body 31 and a rain guard 32.
The rain-proof device 32 is disposed along the entire periphery of the outer wall of the capacitor body 31, and the rain-proof device 32 and the outer wall of the capacitor body 31 form a predetermined angle.
In specific implementation, the rain-proof device 32 is disposed along the outer wall of the capacitor body 31 in an inclined downward manner, i.e. the predetermined angle is an acute angle. Preferably, the preset angle is 20 ° to 40 °. Further preferably, the preset angle is 30 °.
A first end (an upper end shown in fig. 3) of the rain guard 32 is bonded to the outer wall of the capacitor body 31 by a second sealant 33, and a second end (a lower end shown in fig. 3) of the rain guard 32 is freely disposed below the capacitor body 31. Of course, the connection mode between the first end (the upper end shown in fig. 3) of the rain guard 32 and the capacitor body 31 may be other connection modes, and this embodiment does not limit this. Rain insensitive device 32 is used for sheltering from the rainwater, and the rainwater drips to capacitor body 31 and rain insensitive device 32 on, and under the effect of its outer wall impact force and self gravity, the rainwater drips to the below of capacitor body 31 along rain insensitive device 32's outer wall, and rain insensitive device 32 has prevented the erosion of rainwater to capacitor body 31 bottom plate.
The rain-proof capacitor 3 provided by the embodiment can prevent rainwater from dropping on the bottom plate of the capacitor body 31 by shielding the rainwater through the rain-proof device 32, so that the device can prevent water from accumulating below the bottom plate of the capacitor, thereby greatly shortening the natural drying time and the test period of the capacitor; in addition, the bottom plate of the rain-proof capacitor 3 has no accumulated water, the insulating property of the capacitor is improved, the bottom plate of the capacitor can be prevented from being broken down, and the safety performance of the test is also improved.
With continued reference to fig. 1, the rain guard 32 may include: a plurality of water baffles 321. Each water baffle 321 is disposed along the entire circumference of the outer wall of the capacitor body 31 and forms a predetermined angle with the outer wall of the capacitor body 31. In specific implementation, each water baffle 321 is arranged along the outer wall of the capacitor body 31 in an inclined and downward manner, that is, the preset angle is an acute angle. Preferably, the preset angle is 20 ° to 40 °. Further preferably, the preset angle is 30 °.
The first end (the upper end shown in fig. 3) of each water guard plate 321 is bonded to the outer wall of the capacitor body 31 by the second sealant 33, and the second end (the lower end shown in fig. 3) of each water guard plate 321 is disposed freely below the capacitor body 31. Of course, the connection mode of the first end (the upper end shown in fig. 3) of each water guard 321 and the capacitor body 31 may be other connection modes, and this embodiment does not limit it at all. The water baffle 321 is used for shielding rainwater, the rainwater drips on the capacitor body 31 and the water baffle 321, under the action of the impact force of the outer wall of the water baffle 321 and the gravity of the water baffle, the rainwater drips below the capacitor body 31 along the outer wall of the water baffle 321, and the water baffle 321 prevents the rainwater from corroding the bottom plate of the capacitor body 31.
It should be noted that the shape and number of the water baffles 321 are determined mainly by the shape of the capacitor body 31. If the capacitor body 31 is cylindrical, each water guard 321 is an arc plate with a preset angle; if the capacitor body 31 is a rectangular parallelepiped, the water baffle 321 is four trapezoidal plates, and of course, the water baffle 321 may have other shapes, for example, a combination of a square plate and a trapezoidal plate, and the specific shape and number are determined according to the shape of the capacitor body 31, which is not limited in this embodiment.
It can be seen that the rain guard 32 of the present embodiment has a simple structure and is easy to be implemented, and meanwhile, the plurality of water baffles 321 are easy to be assembled and transported.
Further, each of the water baffles 321 may be a silicone rubber plate. In this embodiment, the silicone rubber plate can effectively prevent rain, so that the ability of the rain-proof capacitor 3 to shield rain can be further improved; meanwhile, the silicone rubber plate has good insulating property, so that in the use process of the rain-proof capacitor 3, the silicone rubber plate can prevent the water baffle 321 from being punctured and further influencing the rain-proof capability of the water baffle 321.
In an embodiment of the present invention, a first sealant 322 may be disposed between any two adjacent water baffles 321. In this embodiment, the first sealant 322 disposed between the water baffles 321 can further seal the gap between the water baffles 321, and can effectively prevent the rainwater from infiltrating into the gap and dripping onto the bottom plate of the capacitor body 31 after long-term use, so as to further improve the rainproof capability of the rainproof device 32.
In another embodiment of the present invention, the water baffles 321 may be integrally formed, so as to eliminate the processes of assembling, bonding, etc., thereby greatly improving the production efficiency and the overall strength of the rain guard 32.
In summary, the rain-proof capacitor provided by the embodiment can prevent rainwater from dropping on the bottom plate of the capacitor body by shielding the rainwater through the rain-proof device, so that the device can prevent water from accumulating below the bottom plate of the capacitor, thereby greatly shortening the natural drying time and the test period of the capacitor; meanwhile, the rain-proof capacitor bottom plate has no accumulated water, so that the insulating property of the capacitor is improved, the capacitor bottom plate can be prevented from being broken down, and the safety performance of the test is also improved.
Impact generator example:
the invention also provides an impact generator, wherein the impact generator comprises a plurality of stand columns, at least one supporting plate and the rain-proof capacitor 3. The connection method of the column, the supporting plate and the rain-proof capacitor 3 is well known to those skilled in the art, and the specific implementation engineering of the rain-proof capacitor 3 is described in the above embodiments.
Because the rain-proof capacitor has the above effects, the impact generator with the rain-proof capacitor also has corresponding technical effects. In addition, the impact generator provided by the invention is provided with the rain-proof capacitor, so that no accumulated water is reserved between the rain-proof capacitor and the supporting plate, and the problems that the accumulated water between the capacitor and the supporting plate is difficult to treat and dry are solved, so that the drying time and the test efficiency of the impact generator are further improved.
Referring to fig. 4, fig. 4 is a schematic partial cross-sectional view of an impact generator. In the above-described impact generator, as shown in fig. 4, the second end (lower end shown in fig. 4) of the rain guard 32 is placed below the support plate 2 (with respect to the position shown in fig. 4).
The rain-proof device 32 is disposed at 45 ° to the outer wall of the capacitor body 31, and the second end (lower end shown in fig. 4) of the rain-proof device 32 is placed above the support plate 2 (with respect to the position shown in fig. 4), on the bottom surface of the support plate 2 (lower surface shown in fig. 2), and below the support plate 2 (with respect to the position shown in fig. 4) to perform a one-hour rain-proof comparison test. Finally, in the above three cases, the water drops dropped from the bottom (with respect to the position shown in fig. 4) of the capacitor body 31 are reduced in turn, and when the second end (the lower end shown in fig. 4) of the rain guard 32 is placed below (with respect to the position shown in fig. 4) the support plate 2, both the bottom (with respect to the position shown in fig. 4) of the capacitor body 31 and the support plate 2 keep the dry surface free from water drops. It can be seen that in this embodiment the second ends (lower ends as shown in fig. 4) of the rain protection means 32 are each positioned below the support plate 2 (relative to the position shown in fig. 4) to further improve the rain protection of the impact generator.
Furthermore, a rainproof coating 4 is filled between the rainproof capacitor 3 and the support plate 2. When the rain-proof capacitor is specifically implemented, the rain-proof coating 4 can be coated along the circumferential direction of the joint of the rain-proof capacitor 3 and the supporting plate 2. It can be seen that, in this embodiment, rain-proof coating 4 can prevent rain infiltration from forming ponding with the gap seal between rain-proof drenching condenser 3 and the backup pad 2, therefore rain-proof coating 4 can further improve this impulse generator's rain-proof ability.
Further, the rain-proof coating 4 may be an RTV (room temperature vulcanized silicone rubber) coating. In this embodiment, because the RTV coating has strong hydrophobicity, the RTV coating can further prevent effectively that rainwater from infiltrating and forming ponding.
Because the rain-proof capacitor has the above effects, the impact generator with the rain-proof capacitor also has corresponding technical effects. In addition, the impulse generator that this embodiment provided is provided with above-mentioned rain-proof capacitor that drenches, so can guarantee that rain-proof drenches and does not have ponding between capacitor and the backup pad, solved the ponding between capacitor and the backup pad problem difficult to handle and difficult drying simultaneously, so further improved impulse generator's drying time and test efficiency.
The impact generator provided by the embodiment of the present invention will be described in more detail below.
As shown in fig. 1, 4 and 5, the impact generator comprises a plurality of columns 1, at least one supporting plate 2 with the thickness of 1cm and a rain-proof capacitor 3, wherein one end of each of the columns is embedded below the bottom surface, the supporting plates 2 are arranged among the columns 1 in parallel along the vertical direction, the bottom surface (relative to the position shown in fig. 4) of the rain-proof capacitor 3 is connected with the supporting plate 2, and an RTV coating is circumferentially arranged at the joint between the rain-proof capacitor 3 and the supporting plate 2. Wherein, rain-proof capacitor 3 that drenches includes capacitor body 31 and rain insensitive device 32, rain insensitive device 32 is along the whole week of capacitor body 31 outer wall and be 30 settings with capacitor body 31's outer wall to rain insensitive device 32's first end (as the upper end shown in fig. 1) bonds mutually through sealed glue 33 of second in 3cm departments of capacitor body 31 bottom surface and capacitor body 31's outer wall, rain insensitive device 32's second end is in the free setting of 1cm department of 1 bottom surface of backup pad. The capacitor body 31 is a cuboid with the length and width of 1m and 25cm respectively, the rain-proof device 32 comprises four water baffles 321, each water baffle 321 is a silicon rubber plate with the height of 6cm and an isosceles trapezoid, the bottom edges of the two water baffles 321 are 1m and 1.06m respectively, and the bottom edges of the other two water baffles 321 are 25cm and 31cm respectively. The short bottom edges of the four water baffles 321 are bonded with the outer wall of the capacitor body 31 through second sealant 33 at a distance of 3cm from the bottom surface of the capacitor body 31, the long bottom edges of the four water baffles 321 are freely arranged at a distance of 1cm from the bottom surface of the support plate 2, and the side edges of any two adjacent water baffles 321 are bonded through first sealant 322.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a rain-proof capacitor for strike generator, its characterized in that includes: a capacitor body (31) and a rain shield (32); wherein,
the rainproof device (32) is arranged along the whole periphery of the outer wall of the capacitor body (31) and forms a preset angle with the outer wall of the capacitor body (31), and the rainproof device (32) is used for shielding rainwater;
the first end of the rain-proof device (32) is connected with the outer wall of the capacitor body (31), and the second end of the rain-proof device (32) is freely arranged below the capacitor body.
2. The rain capacitor of claim 1, wherein the rain shield comprises: a plurality of water baffles (321); wherein,
each water baffle (321) is arranged along the whole circumference of the outer wall of the capacitor body (31) and forms a preset angle with the outer wall of the capacitor body (31);
the first end of each water baffle (321) is connected with the outer wall of the capacitor body (31), and the second end of each water baffle (321) is freely arranged below the capacitor body (31);
the side edges of any two adjacent water baffles (321) are connected.
3. The rain capacitor of claim 2, wherein each water deflector (321) is a silicone rubber plate.
4. The rain-proof capacitor as claimed in claim 3, wherein a first sealant (322) is disposed between any two adjacent water baffles (321).
5. The rain capacitor of claim 3, wherein the plurality of water baffles (321) are integrally formed.
6. The rain capacitor as claimed in any one of claims 1 to 5, wherein the rain guard (32) is bonded to the capacitor body (31) by a second sealant (33).
7. An impulse generator comprising: many stands (1) and at least one backup pad (2), its characterized in that still includes: -at least one rain capacitor (3) according to any one of claims 1 to 6; wherein,
each upright post (1) is connected with the supporting plate (2), and the bottom surface of the rain-proof capacitor (3) is connected with the supporting plate (2).
8. Impact generator according to claim 7, characterised in that the second end of said rain protection means (32) is placed below said supporting plate (2).
9. Impact generator according to claim 7 or 8, characterized in that a rain-proof coating (4) is filled between the rain-proof capacitor (3) and the support plate (2).
10. Impact generator according to claim 9, characterized in that said rain-proof coating (4) is an RTV coating.
CN201710099206.8A 2017-02-23 2017-02-23 Rain-proof capacitor and impact generator Active CN107045935B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201710099206.8A CN107045935B (en) 2017-02-23 2017-02-23 Rain-proof capacitor and impact generator

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CN107045935B CN107045935B (en) 2021-02-05

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001210292A (en) * 2000-01-27 2001-08-03 Ngk Insulators Ltd Air inlet gallery structure for outdoor package for sodium-sulfur battery
US20050219806A1 (en) * 2004-02-18 2005-10-06 John Gregory Meter enclosure cover
CN202268396U (en) * 2011-09-29 2012-06-06 深圳市沃特玛电池有限公司 Battery box
CN202393800U (en) * 2011-12-16 2012-08-22 重庆市綦江县供电有限责任公司 Outdoor rainproof single-phase electric meter box
CN104577816A (en) * 2014-12-26 2015-04-29 国家电网公司 Heat-dissipation power distribution cabinet convenient to hoist
CN204376452U (en) * 2014-12-19 2015-06-03 天津康能车业有限公司 The electric automobile charging pile of water-proof function
CN204835257U (en) * 2015-08-20 2015-12-02 南京弘邦高分子材料有限公司 Prevent rain -proof hydroelectric power cabinet of ponding
CN205450057U (en) * 2016-02-19 2016-08-10 保定德乐普电器制造有限公司 Ammeter case that waterproof performance is good
CN205562621U (en) * 2016-04-20 2016-09-07 广州供电局有限公司 A impulse generator for field test
CN205643428U (en) * 2016-05-12 2016-10-12 广州供电局有限公司 Impulse voltage generator
CN205911342U (en) * 2016-07-26 2017-01-25 江西恒锐科技有限公司 Waterproof heat dissipation type new energy batteries case

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001210292A (en) * 2000-01-27 2001-08-03 Ngk Insulators Ltd Air inlet gallery structure for outdoor package for sodium-sulfur battery
US20050219806A1 (en) * 2004-02-18 2005-10-06 John Gregory Meter enclosure cover
CN202268396U (en) * 2011-09-29 2012-06-06 深圳市沃特玛电池有限公司 Battery box
CN202393800U (en) * 2011-12-16 2012-08-22 重庆市綦江县供电有限责任公司 Outdoor rainproof single-phase electric meter box
CN204376452U (en) * 2014-12-19 2015-06-03 天津康能车业有限公司 The electric automobile charging pile of water-proof function
CN104577816A (en) * 2014-12-26 2015-04-29 国家电网公司 Heat-dissipation power distribution cabinet convenient to hoist
CN204835257U (en) * 2015-08-20 2015-12-02 南京弘邦高分子材料有限公司 Prevent rain -proof hydroelectric power cabinet of ponding
CN205450057U (en) * 2016-02-19 2016-08-10 保定德乐普电器制造有限公司 Ammeter case that waterproof performance is good
CN205562621U (en) * 2016-04-20 2016-09-07 广州供电局有限公司 A impulse generator for field test
CN205643428U (en) * 2016-05-12 2016-10-12 广州供电局有限公司 Impulse voltage generator
CN205911342U (en) * 2016-07-26 2017-01-25 江西恒锐科技有限公司 Waterproof heat dissipation type new energy batteries case

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