CN108321704B - Explosion-proof positive-pressure power distribution cabinet - Google Patents
Explosion-proof positive-pressure power distribution cabinet Download PDFInfo
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- CN108321704B CN108321704B CN201810164167.XA CN201810164167A CN108321704B CN 108321704 B CN108321704 B CN 108321704B CN 201810164167 A CN201810164167 A CN 201810164167A CN 108321704 B CN108321704 B CN 108321704B
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- air inlet
- sealing
- explosion
- inlet pipe
- proof
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- 238000007789 sealing Methods 0.000 claims abstract description 93
- 238000009423 ventilation Methods 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000003063 flame retardant Substances 0.000 claims description 13
- 239000002274 desiccant Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims 2
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 230000006837 decompression Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 4
- 238000013022 venting Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/306—Accessories, e.g. windows
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention discloses an explosion-proof positive-pressure power distribution cabinet, which comprises: the explosion-proof air-discharging device comprises a shell, an air inlet, an air outlet, an air inlet pipe assembly and an explosion-proof air-discharging assembly, wherein the air inlet and the air outlet are arranged on the shell; the air inlet pipe subassembly is constituteed and is had: the air inlet pipe, a first air suction machine arranged at the inlet of the air inlet pipe and an electromagnetic valve arranged on the air inlet pipe; the explosion-proof gassing subassembly is constituteed and is had: the ventilation device comprises a ventilation box fixed on the air outlet and provided with a first through hole, a ventilation cover corresponding to the position of the first through hole and provided with a second through hole, a second suction fan arranged on the ventilation cover, a sealing assembly for sealing the first through hole, and an electronic telescopic rod for controlling the first through hole to be closed and connected to the sealing assembly. The invention not only can seal the power distribution cabinet, but also can prevent external moisture, flammability and explosiveness and dust from entering; monitoring the pressure and temperature in the power distribution cabinet in real time, and automatically realizing explosion-proof decompression and heat dissipation; the use safety is improved, the automation is improved, and the labor burden is reduced.
Description
Technical Field
The invention relates to the field of power distribution cabinets, in particular to an explosion-proof positive-pressure power distribution cabinet.
Background
The switch board that uses in the market, it is non-sealed mostly, non-sealed switch board and quick-witted case can't prevent the entering and the accumulation of humid air, inflammable and explosive gas, sand and wind dust like this, make electrical component receive corruption, milden and rot and oxidation, produce dangers such as electrical apparatus trouble and explosion easily, have seriously shortened equipment life, become a big difficult problem in the electrical equipment use. In order to prevent moist air, flammable and explosive gas and sand dust from entering the sealed power distribution cabinet, the sealed power distribution cabinet is also provided in the market, but the heat dissipation effect is poor, and heat cannot be dissipated and is easy to explode for instruments with high heat productivity.
Market needs a can avoid external humidity, flammable and explosive, dust to get into, can take a breath and the switch board of decompression according to the condition in the switch board moreover.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the explosion-proof positive-pressure power distribution cabinet, which not only can seal the power distribution cabinet, but also can prevent external moisture, flammability and explosiveness and dust from entering; monitoring the pressure and temperature in the power distribution cabinet in real time, and automatically realizing explosion-proof decompression and heat dissipation; the use safety is improved, the automation is improved, and the labor burden is reduced.
In order to achieve the above object, the present invention adopts the following technical solutions:
explosion-proof malleation switch board includes: the explosion-proof air-discharging device comprises a shell, an air inlet, an air outlet, an air inlet pipe assembly and an explosion-proof air-discharging assembly, wherein the air inlet and the air outlet are arranged on the shell; the air inlet pipe subassembly is constituteed and is had: the air inlet pipe, a first air suction machine arranged at the inlet of the air inlet pipe and an electromagnetic valve arranged on the air inlet pipe; the explosion-proof gassing subassembly is constituteed and is had: the ventilation device comprises a ventilation box fixed on the air outlet and provided with a first through hole, a ventilation cover corresponding to the position of the first through hole and provided with a second through hole, a second suction fan arranged on the ventilation cover, a sealing assembly for sealing the first through hole, and an electronic telescopic rod for controlling the first through hole to be closed and connected to the sealing assembly.
Aforementioned explosion-proof malleation switch board, the intake pipe is constituteed and is had: the air inlet pipe body is arranged in the air inlet pipe body and is positioned behind the first air suction machine, the ventilating drying agent box is arranged in the air inlet pipe body, and the ventilating stone ink box is arranged in the air inlet pipe body.
Aforementioned explosion-proof malleation switch board, the intake pipe still constitutes: set up the flexible fold section on the intake pipe body.
Aforementioned explosion-proof malleation switch board, seal assembly constitutes has: the sealing plate is arranged on the sealing plate.
Aforementioned explosion-proof malleation switch board, seal assembly still constitutes: the sealing device comprises a mounting thread arranged at the edge of a sealing plate, a rotating cover which covers the sealing plate and is rotationally clamped on the mounting thread, a first sealing ring arranged on the periphery of the rotating cover, a rotating shaft which drives the rotating cover to rotate, and an electronic rotating motor connected to the rotating shaft.
Aforementioned explosion-proof malleation switch board, seal assembly still constitutes: the sealing cover is covered on the sealing plate, the first sealing ring is arranged on the periphery of the sealing cover, and the electronic push rod is fixed on the sealing cover and connected to the sealing plate.
According to the explosion-proof positive-pressure power distribution cabinet, the inner wall of the ventilation cover is provided with the second sealing ring which is in contact with the outer wall of the ventilation box.
According to the explosion-proof positive pressure power distribution cabinet, the fire retardant block is arranged in the ventilation box.
Aforementioned explosion-proof malleation switch board, the shell is constituteed and is had: the stainless steel shell, set up the fire-retardant cystosepiment in the stainless steel shell.
Aforementioned explosion-proof positive pressure switch board still includes: the device comprises a pressure sensor, a temperature sensor, a controller and a wireless transceiver, wherein the pressure sensor and the temperature sensor are arranged in a shell, the controller is used for receiving sensor information and transmitting the information to each device, and the wireless transceiver is used for transmitting the information.
The invention has the advantages that:
the invention realizes the sealing of the power distribution cabinet by arranging the electromagnetic valve and the sealing assembly; the special structure of the air inlet pipe can prevent external moisture, flammability and explosiveness and dust from entering, and the position of the air inlet pipe can be adjusted through the arrangement of the telescopic corrugated section, so that the heat dissipation of a specified position is realized;
the sealing component is provided with two layers of seals, so that the sealing degree is improved.
The invention realizes automatic explosion-proof deflation decompression and heat dissipation through the cooperation of the explosion-proof deflation component and the control system.
The fire retardant block is arranged at the air outlet, so that the explosion or combustion of the diffused gas contacting with air is avoided;
the flame-retardant foam board is arranged in the shell, so that the safety when an accident happens is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of one embodiment of the seal assembly of the present invention in a sealed condition;
FIG. 3 is a schematic structural view of one embodiment of the seal assembly of the present invention in a vent state;
fig. 4 is a schematic structural view of another embodiment of the seal assembly of the present invention.
The meaning of the reference symbols in the figures:
the air inlet pipe comprises a shell 1, a stainless steel shell 101, a flame-retardant foam board 102, an air inlet pipe 2, an air inlet pipe body 201, a ventilation drying agent box 202, a ventilation graphite box 203, a telescopic fold section 204, a dust screen 205, a first air suction machine 3, an electromagnetic valve 4, an air inlet box 5, a first through hole 501, a ventilation cover 6, a second through hole 601, an alarm 7, a second air suction machine 8, an electronic telescopic rod 9, a sealing plate 10, a sealing plate 11, a mounting thread 12, a rotary cover 13, a first sealing ring 14, an electronic rotating motor 15, an electronic push rod 16, a second sealing ring 17, a fire retardant block 18 and a sealing cover 19.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
Explosion-proof malleation switch board includes: the air conditioner comprises a shell 1, an air inlet and an air outlet which are arranged on the shell 1, an air inlet pipe 2 assembly arranged at the air inlet, and an explosion-proof air discharging assembly arranged at the air outlet; the air inlet pipe subassembly is constituteed and is had: the air inlet pipe 2, a first suction fan 3 arranged at the inlet of the air inlet pipe 2 and an electromagnetic valve 4 arranged on the air inlet pipe 2; the explosion-proof gassing subassembly is constituteed and is had: the ventilation device comprises a ventilation box 5 fixed on an air outlet and provided with a first through hole 501, a ventilation cover 6 corresponding to the position of the first through hole 501 and provided with a second through hole 601, a second suction fan 8 arranged on the ventilation cover 6, a sealing assembly for sealing the first through hole 501, and an electronic telescopic rod 9 for controlling the opening and closing of the first through hole 501 and connected to the sealing assembly. In order to increase the tightness between the venting cover 6 and the venting box 5, the inner wall of the venting cover 6 is provided with a second sealing ring 17 contacting the outer wall of the venting box 5.
The air inlet pipe 2 comprises: the air inlet pipe comprises an air inlet pipe body 201, a dust screen 205 arranged in the air inlet pipe body 201 and positioned behind the first air suction machine 3, a ventilation drying agent box 202 arranged in the air inlet pipe body 201, and a ventilation graphite box 203 arranged in the air inlet pipe body 201. The upper wall and the lower wall of the ventilating and drying agent box 202 and the ventilating graphite box 203 are provided with ventilating through holes, and closed nets for closing the graphite box and the drying agent are fixed in the upper wall and the lower wall.
In order to let intake pipe 2 can adjusting position and length, realize the assigned position heat dissipation, intake pipe 2 still constitutes to have: a telescopic corrugated section 204 arranged on the air inlet pipe body 201. The air inlet pipe 2 is made of a material with good ductility and heat resistance; fiberglass foam tubing may be used.
As shown in fig. 2 and 3, the sealing assembly comprises: the sealing device comprises a sealing plate 10 for sealing the first through hole 501, a sealing sheet 11 arranged on the sealing plate 10, a mounting thread 12 arranged on the edge of the sealing plate 10, a rotating cover 13 which covers the sealing plate 10 and is rotationally clamped on the mounting thread 12, a first sealing ring 14 arranged on the periphery of the rotating cover 13, a rotating shaft for driving the rotating cover 13 to rotate, and an electronic rotating motor 15 connected to the rotating shaft. The electronic telescopic rod 9 is fixed on the closing plate 10 through a connecting rod, and the electronic rotating motor 15 is also fixed on the closing plate 10 through a connecting rod. As shown in fig. 2, in the sealed state, the electric telescopic rod extends to seal the first through hole 501 by the sealing plate 10 and the sealing sheet 11, and then the electronic rotating motor 15 is driven to rotate, the rotating shaft drives the rotating cover 13 to rotate, and the rotating cover 13 is guided by the mounting thread 12 to move to the position of the first through hole 501, so that the first sealing ring 14 is sealed; two-layer sealing is realized. As shown in fig. 3, the gassing state drives the electronic rotating electrical machines 15 and rotates in the opposite direction, and the rotation axis drives rotatory lid 13 and rotates, is guided by mounting thread 12, realizes that rotatory lid 13 removes to the position of keeping away from first through-hole 501, accomplishes the deblocking of first sealing washer 14, drives electric telescopic handle again and shortens, leaves first through-hole 501 position with closing plate 10 and gasket 11, and second suction fan 8 starts, with the gaseous suction in the switch board.
As shown in fig. 4, the sealing assembly is composed of: the sealing device comprises a sealing plate 10 for sealing the first through hole 501, a sealing sheet 11 arranged on the sealing plate 10, a sealing cover 19 covered on the sealing plate 10, a first sealing ring 14 arranged on the periphery of the sealing cover 19, and an electronic push rod 16 fixed on the sealing cover 19 and connected to the sealing plate 10. In a sealing state, the electric telescopic rod extends to seal the first through hole 501 by the sealing plate 10 and the sealing sheet 11, and then the electronic push rod 16 is driven to extend to press the first sealing ring 14 on the ventilation box 5 to complete the sealing of the first sealing ring 14; two-layer sealing is realized. In the unsealing state, the driving electronic push rod 16 is shortened, so that the first sealing ring 14 is separated from the vent box 5, the sealing of the first sealing ring 14 is released, and then the electric telescopic rod is shortened, so that the sealing plate 10 and the sealing sheet 11 are separated from the first through hole 501.
In order to avoid explosion or combustion of the diffused gas contacting with air, a fire retardant block 18 is arranged in the ventilation box 5, so that the discharged gas of the power distribution cabinet can pass through the fire retardant block 18 and then can be discharged.
In order to further increase the safety, the housing 1 is composed of: a stainless steel casing 101, and a flame retardant foam sheet 102 disposed inside the stainless steel casing 101.
Explosion-proof malleation switch board still includes: a pressure sensor and a temperature sensor which are arranged in the shell 1, a controller which receives sensor information and transmits the information to each device, and a wireless transceiver which transmits the information. The pressure sensor and the temperature sensor transmit information to the controller through the wireless transceiver, the controller converts and calculates the information, if the pressure exceeds a specified value, the wireless transceiver drives the second suction fan 8, the electronic telescopic rod 9 and the sealing assembly of the explosion-proof deflation assembly to operate, deflation is completed, then the first suction fan 3 and the electromagnetic valve 4 are driven to operate, and cooled air is supplemented to enter; if the temperature exceeds a specified value and the pressure does not exceed the specified value, the first air suction machine 3 and the electromagnetic valve 4 are firstly driven to operate and suck air, and then the explosion-proof air release assembly is driven to operate and release air. If the pressure value exceeds the dangerous value set by the controller, the air release work is completed, and the alarm 7 is driven to sound, so that the working personnel can take emergency measures.
The invention provides an explosion-proof positive-pressure power distribution cabinet, which realizes the sealing of the power distribution cabinet through the arrangement of an electromagnetic valve 4 and a sealing assembly; the special structure of the air inlet pipe 2 can prevent external moisture, flammability and explosiveness and dust from entering, and the position of the air inlet pipe 2 can be adjusted through the arrangement of the telescopic corrugated section 204, so that the heat dissipation of the specified position is realized; the sealing component is provided with two layers of seals, so that the sealing degree is improved. The invention monitors the pressure and the temperature in the power distribution cabinet in real time, and realizes automatic explosion-proof deflation decompression and heat dissipation through the cooperation of the explosion-proof deflation assembly and the control system. The fire retardant block 18 is arranged at the air outlet, so that the explosion or combustion of the diffused gas contacting with air is avoided; the flame-retardant foam plate 102 is arranged in the shell 1, so that the safety in case of accidents is improved. The invention improves the use safety, improves the automation and reduces the labor load.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (5)
1. Explosion-proof malleation switch board, its characterized in that includes: the shell is provided with an air inlet and an air outlet, an air inlet pipe assembly and an explosion-proof air discharging assembly, wherein the air inlet and the air outlet are arranged on the shell; the air inlet pipe assembly comprises: the air inlet pipe, the first suction fan arranged at the inlet of the air inlet pipe and the electromagnetic valve arranged on the air inlet pipe; the explosion-proof air release component comprises: the ventilation box is fixed at the air outlet and is provided with a first through hole, the ventilation cover is corresponding to the position of the first through hole and is provided with a second through hole, the second suction fan is arranged on the ventilation cover, the sealing assembly seals the first through hole, and the electronic telescopic rod controls the opening and closing of the first through hole and is connected to the sealing assembly; the air inlet pipe comprises the following components: the air inlet pipe comprises an air inlet pipe body, a dust screen, an aeration drying agent box, an aeration graphite box and a telescopic fold section, wherein the dust screen is arranged in the air inlet pipe body and is positioned behind a first air suction machine; the sealing component comprises: a sealing plate for sealing the first through hole, and a sealing sheet arranged on the sealing plate; the sealing component also comprises: the rotary cover is covered on the sealing plate and rotationally clamped on the mounting thread, the first sealing ring is arranged on the periphery of the rotary cover, the rotary shaft drives the rotary cover to rotate, and the electronic rotating motor is connected to the rotary shaft; the sealing assembly alternatively comprises: the sealing cover is covered on the sealing plate, the first sealing ring is arranged on the periphery of the sealing cover, and the electronic push rod is fixed on the sealing cover and connected to the sealing plate.
2. The explosion-proof positive pressure power distribution cabinet according to claim 1, wherein the inner wall of the ventilation cover is provided with a second sealing ring contacting with the outer wall of the ventilation box.
3. The explosion-proof positive pressure power distribution cabinet according to claim 1, wherein a fire retardant block is arranged in the ventilation box.
4. The explosion-proof positive pressure power distribution cabinet of claim 1, wherein the housing comprises: the flame-retardant foam board is arranged in the stainless steel shell.
5. The explosion-proof positive pressure power distribution cabinet of claim 1, further comprising: the pressure sensor and the temperature sensor are arranged in the shell, the controller is used for receiving sensor information and transmitting the information to each device, and the wireless transceiver is used for transmitting the information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164167.XA CN108321704B (en) | 2018-02-27 | 2018-02-27 | Explosion-proof positive-pressure power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164167.XA CN108321704B (en) | 2018-02-27 | 2018-02-27 | Explosion-proof positive-pressure power distribution cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN108321704A CN108321704A (en) | 2018-07-24 |
| CN108321704B true CN108321704B (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810164167.XA Active CN108321704B (en) | 2018-02-27 | 2018-02-27 | Explosion-proof positive-pressure power distribution cabinet |
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| CN (1) | CN108321704B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599760A (en) * | 2019-01-17 | 2019-04-09 | 安徽省康宇水电机械成套设备有限公司 | A kind of power distribution cabinet of releasing pressure automatically function |
| WO2020245879A1 (en) * | 2019-06-03 | 2020-12-10 | 東芝三菱電機産業システム株式会社 | Explosion-proof structure |
| CN110350427B (en) * | 2019-08-19 | 2021-05-28 | 江苏浩视科技有限公司 | Power distribution cabinet |
| CN111009827B (en) * | 2019-11-26 | 2020-12-25 | 广东电网有限责任公司汕尾供电局 | Power main network control cabinet in chemical environment |
| CN111926779B (en) * | 2020-08-13 | 2022-04-19 | 安徽省万豪水坝节能技术有限公司 | Sound-proof noise-reducing bottom cross shaft plate-turning steel gate dam |
| CN112864929B (en) * | 2021-01-21 | 2022-12-27 | 重庆新倍迪电气有限公司 | Positive pressure type explosion-proof power distribution cabinet and use method thereof |
| CN112838508B (en) * | 2021-04-02 | 2023-06-02 | 河南基泰电气有限公司 | Switch board heat abstractor convenient to installation |
| CN113436835B (en) * | 2021-06-25 | 2023-02-17 | 广东电网有限责任公司 | Power transformer and explosion-proof method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19845775A1 (en) * | 1998-09-22 | 2000-03-23 | Siemens Ag | Medium-voltage switchgear with discharge channels for removing products of decomposition of arc |
| DE102010039964B4 (en) * | 2010-08-31 | 2012-07-05 | Siemens Aktiengesellschaft | Burst protection device for a connection box of an electrical machine |
| CN101997271B (en) * | 2010-10-26 | 2012-08-22 | 南通金茂防爆电气有限公司 | Power distribution cabinet of positive voltage explosion-proof instrument |
| CN203064526U (en) * | 2013-02-05 | 2013-07-17 | 喻里程 | Beverage bottle with sealable threaded section |
| CN203423881U (en) * | 2013-07-04 | 2014-02-05 | 上海恩韦司信息系统有限公司 | Positive pressure explosion-proof cabinet |
| CN203871702U (en) * | 2014-04-15 | 2014-10-08 | 江山惠企科技服务有限公司 | Adjustable heat dissipation type outdoor distribution box |
| CN104964032A (en) * | 2015-06-04 | 2015-10-07 | 江苏进源压力容器有限公司 | Pressure container sealing cover |
| CN205543912U (en) * | 2016-03-01 | 2016-08-31 | 陈昊 | Box -type substation with automatic fire extinguishing function |
| CN206452030U (en) * | 2017-02-28 | 2017-08-29 | 福建创合电气股份有限公司 | Medium-voltage switch cabinet utilizing gas insulation |
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2018
- 2018-02-27 CN CN201810164167.XA patent/CN108321704B/en active Active
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| CN108321704A (en) | 2018-07-24 |
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Effective date of registration: 20201216 Address after: No. 477, Jingqi Road, economic development zone, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: CHINA HELON EXPLOSION-PROOF ELECTRIC Co.,Ltd. Address before: No.477, Jingqi Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: Zhang Naiyue |