WO2023097649A1 - 一种散热防爆电器柜 - Google Patents

一种散热防爆电器柜 Download PDF

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Publication number
WO2023097649A1
WO2023097649A1 PCT/CN2021/135311 CN2021135311W WO2023097649A1 WO 2023097649 A1 WO2023097649 A1 WO 2023097649A1 CN 2021135311 W CN2021135311 W CN 2021135311W WO 2023097649 A1 WO2023097649 A1 WO 2023097649A1
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box
explosion
pressure relief
proof
pipe
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PCT/CN2021/135311
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English (en)
French (fr)
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王春
王仟
吴响响
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二工防爆科技股份有限公司
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Priority to PCT/CN2021/135311 priority Critical patent/WO2023097649A1/zh
Publication of WO2023097649A1 publication Critical patent/WO2023097649A1/zh

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    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the invention relates to the technical field of explosion-proof electrical appliances, in particular to a heat dissipation explosion-proof electrical cabinet.
  • Explosion-proof electrical appliances are electrical appliances that can prevent explosion accidents in places containing explosive dangerous gas mixtures. It is mainly used in petroleum, chemical and other enterprises, as well as coal mines and mines where explosive gases such as gas protrude.
  • the existing explosion-proof electrical housing has a strong internal seal, which leads to a significant decrease in the heat dissipation performance of the explosion-proof electrical housing, and the operating temperature of the internal electrical components is relatively high, which is prone to burnout.
  • the gas in the electrical cabinet is always in a state of high temperature and high pressure, and because the electrical cabinet is narrow, the high-pressure and high-temperature gas generated cannot be effectively released in a short time, which will cause the cabinet to burst and endanger The safety of the staff and the damage to the adjacent electrical cabinets; cause major safety accidents.
  • the present invention provides a heat dissipation and explosion-proof electrical cabinet.
  • the present invention provides the following technical solutions:
  • a heat dissipation explosion-proof electrical cabinet including a cabinet body, with a cabinet door installed on one side of the cabinet body, characterized in that: a cooling gas box is installed at the bottom of the cabinet body, and an air inlet connected to the cooling gas box is provided at the bottom of the cabinet body , a group of first air outlets are set on the top of the cabinet, the cooling gas box is connected to the air source through the air inlet pipe, and the air inlet pipe from the air source to the direction of the cooling gas box is connected to the refrigeration box and the drying box in turn;
  • explosion-proof box on the outside of the cabinet, a pressure relief port on the top of the explosion-proof box, an explosion-proof device at the pressure relief port, and a sealing cover on the upper side of the explosion-proof box. Inside the cover, a group of pressure relief devices are arranged on the sealing cover.
  • a gas buffer box is provided between the explosion-proof box and the cabinet body, a gas buffer chamber is provided between the gas buffer box and the cabinet body, and a second air pressure sensor is installed in the gas buffer chamber, and on the gas buffer box The side is provided with a second air outlet.
  • a gas buffer box is also connected on the air inlet pipe between the drying box and the cooling gas box, a first electromagnetic valve is connected on the air inlet pipe between the gas buffer box and the cooling gas box, and on the gas buffer box Also connect the exhaust pipe, connect the second solenoid valve on the exhaust pipe, and install the humidity sensor in the gas buffer box.
  • the explosion-proof device includes a connecting pipe connected to the outside of the third air outlet, the air outlet of the connecting pipe is connected with an air guide cover, and an annular air guide channel is arranged between the outside of the connecting pipe and the air guide cover.
  • the annular filter screen is matched and connected in the air guide channel.
  • the pressure relief device includes an L-shaped pressure relief pipe, and a group of pressure relief holes are arranged on the upper side of the flameproof box.
  • the pressure relief holes are arranged in the air inlet of the L-shaped pressure relief pipe, and at each pressure relief hole All are connected with a plug, and the plug includes a conical tube connected to the outside of the pressure relief hole, and a blocking bead is arranged in the conical tube, and the blocking bead is compressed in the conical tube by a spring.
  • the air outlet of the pressure relief pipe is also matched with a dust filter, and a first air pressure sensor is installed in the cooling gas box.
  • the device cools the cabinet body through dry cooling gas, avoids heat accumulation, and improves heat dissipation efficiency. To balance the air pressure, it can quickly release the internal air pressure, play the role of unloading, and effectively prevent the explosion.
  • Fig. 1 is a schematic diagram of the basic structure of the present invention
  • Fig. 2 is an enlarged view of part A of Fig. 1 .
  • the present invention relates to a heat dissipation explosion-proof electrical cabinet, comprising a cabinet body 1 with a cabinet door 1.1 installed on one side, a cooling gas box 5 installed at the bottom of the cabinet body 1, and a first Air pressure sensor 33.
  • the bottom of the cabinet 1 is provided with an air inlet 6 communicating with the cooling gas box 5
  • the top of the cabinet 1 is provided with a first air outlet 7 .
  • the cooling gas box 5 is connected to the gas source 21 through the air inlet pipe 20, and the gas source 21 is a fan, and the air inlet pipe 20 from the gas source 21 to the cooling gas box 5 direction is connected to the refrigeration box 22, the drying box 23 and the gas buffer box 24 in sequence.
  • the refrigeration box 22 includes a sealed box body, an air conditioner is installed in the box body, and the temperature in the box body is controlled by the air conditioner.
  • a humidity sensor 29 is installed in the gas buffer box 24 .
  • the outside of the cabinet 1 is provided with a gas buffer box 2, and the gas buffer box 2 completely wraps the cabinet 1.
  • a gas buffer chamber 9 is provided between the gas buffer box 2 and the cabinet body 1
  • a second air pressure sensor 25 is installed on the lower side of the gas buffer chamber 9, and a second air outlet 8 is provided on both sides of the top of the gas buffer box 2 .
  • the outside of the gas buffer box 2 is provided with an explosion-proof box 3, and one side of the gas buffer box 2 and the explosion-proof box 3 is provided with a relief slot for the installation of the cabinet door 1.1.
  • a pressure relief port 3.1 is provided on the top of the explosion-proof box 3
  • an explosion-proof device 10 is provided outside the pressure relief port 3.1
  • a sealing cover 4 is provided on the upper side of the explosion-proof box 3
  • the explosion-proof device 10 is arranged on the sealing cover 4
  • four pressure relief devices 15 are arranged on the sealing cover 4 evenly distributed around the circumference.
  • the explosion-proof device 10 includes a connecting pipe 13 connected to the outside of the third air outlet 3.1, the air outlet of the connecting pipe 13 is matched with the air guide cover 11, and an annular air guide channel is arranged between the outside of the connecting pipe 13 and the air guide cover 11.
  • An annular filter screen 30 for absorbing dust is matched and connected in the air guide channel.
  • the pressure relief device 15 comprises an L-shaped pressure relief pipe 31, the air inlet of the pressure relief pipe 31 is arranged on the side wall on the upper side of the sealing cover 4, and the gas outlet of the pressure relief pipe 31 is arranged on the top of the sealing cover 4, and the pressure relief pipe 31 is arranged on the top of the sealing cover 4, and The air outlet of the pressure pipe 31 is also connected with the dust filter.
  • the upper side of the explosion-proof box 3 is provided with four rows of pressure relief holes 19 evenly distributed around the circumference, and each row of pressure relief holes 19 is three.
  • the pressure relief holes 19 are arranged in the air inlet of the L-shaped pressure relief pipe 31, and each relief A plug 14 is connected to each of the pressure holes 19 .
  • the plug 14 includes a conical tube 18 connected to the outside of the pressure relief hole 19 , the conical tube 18 is provided with a plugging bead 17 , and the plugging bead 17 is compressed in the conical tube 18 by a spring 16 .
  • the controller for controlling the first solenoid valve 27, the second solenoid valve 28, the first air pressure sensor 33, the second air pressure sensor 25, the humidity sensor 29 and the gas source 21, the controller is prior art, installed in the cabinet In the body 1, the specific control method is that when the value detected by any one of the first air pressure sensor 33, the second air pressure sensor 25 and the humidity sensor 29 reaches a predetermined value, the first electromagnetic valve 27 is closed, and the second electromagnetic valve 28 is opened. , the staff carry out maintenance, when all the detected values are less than the predetermined value, the second solenoid valve 28 is closed, and the first solenoid valve 27 is opened to return to the cooling operation.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

本发明涉及一种散热防爆电器柜，包括柜体，柜体安装柜门，在柜体的底部安装冷却气体箱，在柜体底部设有进气孔，柜体顶部设有第一出气孔，冷却气体箱通过进气管连接气源，在进气管上连接制冷箱和干燥箱，柜体的外侧设有隔爆箱，在隔爆箱的顶部设有防爆装置，隔爆箱上侧的设有密封罩，在密封罩上设有泄压装置。本发明的优点：本装置通过干燥的冷却气体对柜体进行冷却降温，同时在设置了防爆装置和密封罩，在起到密封的同时，还能起到平衡气压的作用，能够使其内部的气压能够快速释放，起到卸压的作用，有效的防止爆炸的发生。

Description

一种散热防爆电器柜 技术领域
本发明涉及防爆电器技术领域，具体为一种散热防爆电器柜。
背景技术
防爆电器是在含有爆炸性危险气体混合物的场合中能够防止爆炸事故发生的电器。主要应用于石油、化工等企业和煤矿、矿山具有瓦斯等爆炸性气体突出的场所。现有的防爆电器壳体，整体的内部密封性强，导致防爆电器壳体的散热性能大幅降低，内部电器元件运行温度偏高，很容易出现烧损的现象发生。在长时间高温的状态下，电器柜内的气体一直处于高温高压状态，而由于电器柜较窄，所产生的高压高温气体不能在短时间内有效的释放，会造成柜体炸裂的现象，危及工作人员的安全和造成相邻电器柜的损坏；引起较大的安全事故。
发明内容
为了解决上述技术问题，本发明提供了一种散热防爆电器柜。
为实现上述目的，本发明提供如下技术方案：
一种散热防爆电器柜，包括柜体，在柜体的一侧安装柜门，其特征在于：在柜体的底部安装冷却气体箱，在柜体底部设有与冷却气体箱连通的进气孔，在柜体的顶部设有一组第一出气孔，冷却气体箱通过进气管连接气源，由气源到冷却气体箱方向的进气管上依次连接制冷箱和干燥箱；
在柜体的外侧设有隔爆箱，在隔爆箱的顶部设有泄压口，在泄压口处设有防爆装置，在隔爆箱上侧的设有密封罩，防爆装置设置在密封罩内，在密封罩上设有一组泄压装置。
在上述方案的基础上，还可以采用以下技术方案：
在所述隔爆箱和所述柜体之间设有气体缓冲箱，气体缓冲箱与柜体之间设有气体缓冲腔，在气体缓冲腔内安装第二气压传感器，在气体缓冲箱的上侧设有第二出气孔。
在所述干燥箱和所述冷却气体箱之间的所述进气管上还连接气体缓冲箱，在气体缓冲箱和冷却气体箱之间的进气管上连接第一电磁阀，在气体缓冲箱上还连接排气管，在排气管上连接第二电磁阀，在气体缓冲箱内安装湿度传感器。
所述防爆装置包括连接在所述第三出气孔外侧的连接管，在连接管的出气口处配合连接导气盖，在连接管外侧与导气盖之间设有环形导气通道，在环形导气通道内配合连接环形滤网。
所述泄压装置包括L形的泄压管，在隔爆箱的上侧设有一组泄压孔，泄压孔设置在L形的泄压管的进气口内，在每个泄压孔处均连接一个堵头，堵头包括连接在泄压孔外侧的圆锥形管，在圆锥形管内设有堵珠，堵珠通过弹簧压紧在圆锥形管内。
在所述泄压管的出气口还配合连接滤尘网，在所述冷却气体箱内安装第一气压传感器。
本发明的有益效果是：本装置通过干燥的冷却气体对柜体进行冷却降温，避免热量堆积，提高了散热效率，同时在设置了防爆装置和密封罩，在起到密封的同时，还能起到平衡气压的作用，能够使其内部的气压能够快速释放，起到卸下的作用，有效的防止爆炸的发生。
附图说明
图1为本发明的基本结构示意图；
图2为图1的A部放大图。
具体实施方式
结合附图对本发明实施例中的技术方案进行清楚、完整地描述，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。
如图1和图2所示，本发明涉及一种散热防爆电器柜，包括一侧安装柜门1.1的柜体1，柜体1的底部安装冷却气体箱5，冷却气体箱5内安装第一气压传感器33。柜体1底部设有与冷却气体箱5连通的进气孔6，柜体1顶部设有第一出气孔7。冷却气体箱5通过进气管20连接气源21，气源21为风机，由气源21到冷却气体箱5方向的进气管20上依次连接制冷箱22、干燥箱23和气体缓冲箱24。制冷箱22包括密封箱体，在箱体内安装空调，通过空调控制箱体内的温度。
在气体缓冲箱24和冷却气体箱5之间的进气管20上连接第一电磁阀27，在气体缓冲箱24上还连接排气管26，在排气管26上连接第二电磁阀28，在气体缓冲箱24内安装湿度传感器29。
柜体1的外侧设有气体缓冲箱2，气体缓冲箱2把柜体1完全包裹。气体缓冲箱2与柜体1之间设有气体缓冲腔9，气体缓冲腔9内的下侧安装第二气压传感器25，气体缓冲箱2顶部的两侧均设有第二出气孔8。
气体缓冲箱2的外侧设有隔爆箱3，气体缓冲箱2和隔爆箱3的一侧均设有用于供柜门1.1安装的让位槽。在隔爆箱3的顶部设有泄压口3.1，在泄压口3.1的外侧处设有防爆装置10，在隔爆箱3上侧的设有密封罩4，防爆装置10设置在密封罩4内，在密封罩4上设有圆周均布四个泄压装置15。
防爆装置10包括连接在第三出气孔3.1外侧的连接管13，连接管13的出气口处配合连接导气盖11，连接管13外侧与导气盖11之间设有环形导气通道，环形导气通道内配合连接用于吸附灰尘的环形滤网30。
泄压装置15包括L形的泄压管31，泄压管31的进气口设置在密封罩4上侧的侧壁上，泄压管31的出气口设置在密封罩4的上方，且泄压管31的出气口还配合连接滤尘网。
隔爆箱3的上侧设有圆周均布四列泄压孔19，每列泄压孔19为三个，泄压孔19设置在L形的泄压管31的进气口内，每个泄压孔19处均连接一个堵 头14。堵头14包括连接在泄压孔19外侧的圆锥形管18，圆锥形管18内设有堵珠17，堵珠17通过弹簧16压紧在圆锥形管18内。
还包括用于控制第一电磁阀27、第二电磁阀28、第一气压传感器33、第二气压传感器25、湿度传感器29和气源21的控制器，控制器为现有技术，安装在柜体1内，具体控制方式为当第一气压传感器33、第二气压传感器25和湿度传感器29中任何一个检测到的数值达到预定值时，第一电磁阀27均关闭，第二电磁阀28打开，工作人员进行检修，当所有检测值均小于预定值时，第二电磁阀28关闭，第一电磁阀27打开回复冷却作业。

Claims (6)

  1. 一种散热防爆电器柜，包括柜体(1)，在柜体(1)的一侧安装柜门(1.1)，其特征在于：在柜体(1)的底部安装冷却气体箱(5)，在柜体(1)底部设有与冷却气体箱(5)连通的进气孔(6)，在柜体(1)的顶部设有一组第一出气孔(7)，冷却气体箱(5)通过进气管(20)连接气源(21)，由气源(21)到冷却气体箱(5)方向的进气管(20)上依次连接制冷箱(22)和干燥箱(23)；
    在柜体(1)的外侧设有隔爆箱(3)，在隔爆箱(3)的顶部设有泄压口(3.1)，在泄压口(3.1)处设有防爆装置(10)，在隔爆箱(3)上侧的设有密封罩(4)，防爆装置(10)设置在密封罩(4)内，在密封罩(4)上设有一组泄压装置(15)。
  2. 根据权利要求1所述的一种散热防爆电器柜，其特征在于：在所述隔爆箱(3)和所述柜体(1)之间设有气体缓冲箱(2)，气体缓冲箱(2)与柜体(1)之间设有气体缓冲腔(9)，在气体缓冲腔(9)内安装第二气压传感器(25)，在气体缓冲箱(2)的上侧设有第二出气孔(8)。
  3. 根据权利要求1所述的一种散热防爆电器柜，其特征在于：在所述干燥箱(23)和所述冷却气体箱(5)之间的所述进气管(20)上还连接气体缓冲箱(24)，在气体缓冲箱(24)和冷却气体箱(5)之间的进气管(20)上连接第一电磁阀(27)，在气体缓冲箱(24)上还连接排气管(26)，在排气管(26)上连接第二电磁阀(28)，在气体缓冲箱(24)内安装湿度传感器(29)。
  4. 根据权利要求1所述的一种散热防爆电器柜，其特征在于： 所述防爆装置(10)包括连接在所述第三出气孔(3.1)外侧的连接管(13)，在连接管(13)的出气口处配合连接导气盖(11)，在连接管(13)外侧与导气盖(11)之间设有环形导气通道，在环形导气通道内配合连接环形滤网(30)。
  5. 根据权利要求1所述的一种散热防爆电器柜，其特征在于：所述泄压装置(15)包括L形的泄压管(31)，在隔爆箱(3)的上侧设有一组泄压孔(19)，泄压孔(19)设置在L形的泄压管(31)的进气口内，在每个泄压孔(19)处均连接一个堵头(14)，堵头(14)包括连接在泄压孔(19)外侧的圆锥形管(18)，在圆锥形管(18)内设有堵珠(17)，堵珠(17)通过弹簧(16)压紧在圆锥形管(18)内。
  6. 根据权利要求5所述的一种散热防爆电器柜，其特征在于：在所述泄压管(31)的出气口还配合连接滤尘网，在所述冷却气体箱(5)内安装第一气压传感器(33)。
PCT/CN2021/135311 2021-12-03 2021-12-03 一种散热防爆电器柜 WO2023097649A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116885612A (zh) * 2023-07-17 2023-10-13 杭州杭益电气有限公司 一种多风沙地区用户外环网柜

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