CN205960484U - Heat transfer system of gas insulation switch cabinet, cubical switchboard gas tank and gas tank - Google Patents

Heat transfer system of gas insulation switch cabinet, cubical switchboard gas tank and gas tank Download PDF

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Publication number
CN205960484U
CN205960484U CN201620867004.4U CN201620867004U CN205960484U CN 205960484 U CN205960484 U CN 205960484U CN 201620867004 U CN201620867004 U CN 201620867004U CN 205960484 U CN205960484 U CN 205960484U
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heat
heat pipe
sealing plate
gas tank
cold end
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吴小钊
何战军
李猛
汤清双
郑晓果
李俊豪
翟贺鹏
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Xuji Delischer Electric Co ltd
State Grid Corp of China SGCC
Xuji Group Co Ltd
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XUCHANG XUJI DRIESCHER WEGBERG ELECTRIC CO Ltd
State Grid Corp of China SGCC
Xuji Group Co Ltd
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Abstract

The utility model provides a heat transfer system of gas insulation switch cabinet, cubical switchboard gas tank and gas tank. The cubical switchboard gas tank includes the heat pipe, the one end of heat pipe is used for absorbing the heat and forms the hot junction, and the heat pipe hot junction is equipped with the heat absorber, and this heat absorber is close to and nevertheless keeps corresponding insulation distance with electric elements to the heat of furthest's absorption electric elements production, the heat pipe other end is fixed on one side of closing plate with heat transfer to the closing plate on and form the cold junction, the opposite side of closing plate is equipped with heat abstractor, heat pipe cold junction and heat abstractor correspond the setting and are in the both sides of closing plate, the gas tank is still including being used for fixing the fixed knot of heat pipe cold junction position constructs. The utility model discloses an it is outside that gas insulation switch cabinet and gas tank and heat transfer system can transmit the heat that electric elements produced to the box fast.

Description

一种气体绝缘开关柜、开关柜气箱及气箱的传热系统A gas-insulated switchgear, a switchgear gas box, and a heat transfer system for the gas box

技术领域technical field

本实用新型涉及一种气体绝缘开关柜、开关柜气箱及气箱的传热系统。The utility model relates to a gas insulation switch cabinet, a gas box of the switch cabinet and a heat transfer system of the gas box.

背景技术Background technique

与空气绝缘开关柜相比,气体绝缘开关柜具有占地面积小、绝缘性能良好、密封性能良好、可靠性高、免维护、不受环境影响等优点,近年来逐渐被用户接受。但是相对于同等级的空气绝缘开关柜,气体绝缘开关柜因其一次主回路密封于密闭气箱内,气箱内的热量只能通过气箱壁散发到气箱外部空气中,这种散热方式相比空气绝缘开关柜发热元件的直接自然对流散热方式而言,其散热效果相差甚远。造成了气体绝缘开关柜气箱内一次主回路元件温升很容易超标,过高的温升会加速气箱内绝缘材料的老化进而降低绝缘性能,影响开关设备的可靠性和安全性。因此如何将气体绝缘开关柜气箱内部一次回路产生的热量高效快速地传递到气箱外部是目前气体绝缘开关柜技术领域的难题之一。Compared with air-insulated switchgear, gas-insulated switchgear has the advantages of small footprint, good insulation performance, good sealing performance, high reliability, maintenance-free, and not affected by the environment, and has gradually been accepted by users in recent years. However, compared with the air-insulated switchgear of the same level, the primary circuit of the gas-insulated switchgear is sealed in the airtight air box, and the heat in the air box can only be dissipated to the air outside the air box through the wall of the air box. Compared with the direct natural convection heat dissipation method of the heating element of the air-insulated switchgear, its heat dissipation effect is far different. As a result, the temperature rise of the primary main circuit components in the gas box of the gas insulated switchgear is easy to exceed the standard. Excessive temperature rise will accelerate the aging of the insulating material in the gas box and reduce the insulation performance, affecting the reliability and safety of the switchgear. Therefore, how to efficiently and quickly transfer the heat generated by the primary circuit inside the gas box of the gas-insulated switchgear to the outside of the gas box is one of the current problems in the technical field of gas-insulated switchgear.

针对上述散热问题,国内外同类产品一般采用在气箱壁内面和外面同时加装散热器的方案来进行散热,但由于气箱内部空间限制,内面加装的散热其的尺寸受限,并不能快速有效的吸收气箱内电气元件的热量,这种散热方案存在散热效率低,整体质量偏重等缺点。In view of the above heat dissipation problems, similar products at home and abroad generally adopt the scheme of installing radiators on the inner surface and the outer surface of the air box wall to dissipate heat. Quickly and effectively absorb the heat of the electrical components in the air box. This cooling solution has the disadvantages of low cooling efficiency and heavy overall quality.

实用新型内容Utility model content

本实用新型的目的在于提供一种气体绝缘开关柜、开关柜气箱及气箱的传热系统,以将电气元件产生的热量快速地传递到箱体外部。The purpose of the utility model is to provide a gas insulated switchgear, a gas box of the switchgear and a heat transfer system of the gas box, so as to quickly transfer the heat generated by the electrical components to the outside of the box.

为实现上述目的,本实用新型气箱的传热系统的技术方案是:一种气箱的传热系统,包括用于密封气箱装配孔的密封板,所述气箱的传热系统还包括至少一个热管,所述热管的一端用于吸收热量而形成热端,热管热端设有用于靠近但不接触电气元件以吸收电气元件产生的热量的吸热器,热管另一端固定在所述密封板的一侧上以将热量传递至密封板上而形成冷端,所述密封板的另一侧设有散热装置,所述热管冷端和散热装置对应设置在所述密封板的两侧,所述气箱的传热系统还包括用于固定所述热管冷端位置的固定结构。In order to achieve the above object, the technical solution of the heat transfer system of the air box of the present invention is: a heat transfer system of the air box, including a sealing plate for sealing the assembly hole of the air box, and the heat transfer system of the air box also includes At least one heat pipe, one end of the heat pipe is used to absorb heat to form a hot end, the hot end of the heat pipe is provided with a heat sink for approaching but not touching the electrical components to absorb the heat generated by the electrical components, the other end of the heat pipe is fixed on the sealing One side of the plate is used to transfer heat to the sealing plate to form a cold end, the other side of the sealing plate is provided with a heat sink, and the cold end of the heat pipe and the heat sink are correspondingly arranged on both sides of the sealing plate, The heat transfer system of the air box further includes a fixing structure for fixing the position of the cold end of the heat pipe.

本实用新型开关柜气箱的技术方案是:一种开关柜气箱,包括箱体和箱体内的电气元件,所述箱体上设有用于密封气箱装配孔的密封板,所述箱体内设有至少一个热管,所述热管的一端用于吸收热量而形成热端,热管热端设有用于靠近但不接触电气元件以吸收电气元件产生的热量的吸热器,热管另一端固定在所述密封板的内侧上以将热量传递至密封板上而形成冷端,所述密封板的另一侧上设有散热装置,所述热管冷端和散热装置对应设置在所述密封板的两侧,所述箱体内还设有用于固定所述热管冷端位置的固定结构。The technical scheme of the switchgear gas box of the utility model is: a switchgear gas box, including a box body and electrical components in the box body, the box body is provided with a sealing plate for sealing the assembly hole of the gas box, and the box body There is at least one heat pipe inside. One end of the heat pipe is used to absorb heat to form a hot end. The hot end of the heat pipe is provided with a heat sink for approaching but not touching the electrical components to absorb the heat generated by the electrical components. The other end of the heat pipe is fixed on The inner side of the sealing plate is used to transfer heat to the sealing plate to form a cold end, the other side of the sealing plate is provided with a heat dissipation device, and the cold end of the heat pipe and the heat dissipation device are correspondingly arranged on the sealing plate On both sides, the box is also provided with a fixing structure for fixing the position of the cold end of the heat pipe.

本实用新型气体绝缘开关柜的技术方案是:一种气体绝缘开关柜,包括开关柜气箱,所述箱体上设有用于密封气箱装配孔的密封板,所述箱体内设有至少一个热管,所述热管的一端用于吸收热量而形成热端,热管热端设有用于靠近但不接触电气元件以吸收电气元件产生的热量的吸热器,热管另一端固定在所述密封板的内侧上以将热量传递至密封板上而形成冷端,所述热管热端设有吸热器,所述密封板的另一侧上设有散热装置,所述热管冷端和散热装置对应设置在所述密封板的两侧,所述箱体内还设有用于固定所述热管冷端位置的固定结构。The technical scheme of the gas insulated switchgear of the utility model is: a gas insulated switchgear, including a gas box of the switchgear, a sealing plate for sealing the assembly hole of the gas box is provided on the box, and at least A heat pipe, one end of the heat pipe is used to absorb heat to form a hot end, the hot end of the heat pipe is provided with a heat sink for approaching but not touching the electrical components to absorb the heat generated by the electrical components, and the other end of the heat pipe is fixed on the sealing plate On the inner side of the heat pipe to transfer heat to the sealing plate to form a cold end, the hot end of the heat pipe is provided with a heat absorber, and the other side of the sealing plate is provided with a heat sink, and the cold end of the heat pipe corresponds to the heat sink It is arranged on both sides of the sealing plate, and a fixing structure for fixing the position of the cold end of the heat pipe is also arranged in the box.

本实用新型的有益效果是:使用时,将热管热端的吸热器放置在电气元件附近,在保证绝缘距离的前提下尽量靠近电气元件,将热管的冷端安装在密封板一侧上,热管的热端处设置的吸热器能够吸收电气元件产生的热量,通过管内介质将热量传递至热管的冷端,热管冷端将热量传递给密封板,利用热管的高导热性能快速地将电气元件产生的热量传至密封板上,密封板另一侧的散热装置用于释放密封板上的热量。热管冷端和散热装置对应设置在密封板的两侧,是为了保证热流路径最短,传热效率最大化。本实用新型的传热系统避免了电气元件产生的热量不能得到及时地释放而导致电气元件绝缘失效,影响开关柜的安全性。整个传热装置均在气箱内进行,通过密封板进行导热,保证了气体绝缘开关柜气箱的密封性能。The beneficial effect of the utility model is that: when in use, the heat absorber at the hot end of the heat pipe is placed near the electrical components, and it is as close as possible to the electrical components under the premise of ensuring the insulation distance, and the cold end of the heat pipe is installed on one side of the sealing plate, and the heat pipe The heat absorber set at the hot end of the heat pipe can absorb the heat generated by the electrical components, and transfer the heat to the cold end of the heat pipe through the medium in the pipe, and then transfer the heat to the sealing plate at the cold end of the heat pipe, and use the high thermal conductivity of the heat pipe to quickly dissipate the electrical components The generated heat is transmitted to the sealing plate, and the heat dissipation device on the other side of the sealing plate is used to release the heat on the sealing plate. The cold end of the heat pipe and the cooling device are arranged on both sides of the sealing plate correspondingly, in order to ensure the shortest heat flow path and maximize the heat transfer efficiency. The heat transfer system of the utility model avoids that the heat generated by the electrical components cannot be released in time, which leads to insulation failure of the electrical components and affects the safety of the switchgear. The entire heat transfer device is carried out in the gas box, and conducts heat through the sealing plate to ensure the sealing performance of the gas box of the gas insulated switchgear.

附图说明Description of drawings

图1为本实用新型气箱的传热系统实施例中热管的示意图;Fig. 1 is the schematic diagram of heat pipe in the heat transfer system embodiment of the utility model air box;

图2为本实用新型气箱的传热系统实施例的示意图;Fig. 2 is the schematic diagram of the embodiment of the heat transfer system of the utility model air box;

图3为图2的俯视图。FIG. 3 is a top view of FIG. 2 .

具体实施方式detailed description

下面结合附图对本实用新型的实施方式作进一步说明。Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

本实用新型的气箱的传热系统的具体实施例,如图1至图3所示,其中,1为热管,2为吸热器,3为固定块,4为密封铝板,5为散热器。The specific embodiment of the heat transfer system of the air box of the present utility model is shown in Fig. 1 to Fig. 3, wherein, 1 is a heat pipe, 2 is a heat absorber, 3 is a fixed block, 4 is a sealed aluminum plate, and 5 is a radiator .

图示热管1的左端为热管的热端,热端安装有吸热器2,另一端为热管的冷端。使用时,在满足绝缘距离的前提下,吸热器2尽可能的靠近气体绝缘开关柜气箱内的电气元件,使吸热器2能够快速将电气元件产生的热量吸收,电气元件释放的热量尽可能少的释放到气箱内。吸热器2上安装有多个传热片,安装传热片时,调整传热片的位置,使传热片的放置方向与电气元件附近气流流动方向一致,使吸热器2更高效地从附近的高温气体中吸收热量。吸热器2与热管1的热端的连接方式可以为过盈配合连接或采用压板并用螺钉等结构固定连接。热管1的另一端连接有固定块3,热管1与固定块3的连接方式可以为过盈配合连接或采用压板将热管1固定在固定块3上,固定块3通过螺钉连接等连接方式固定在密封铝板4上。由图中可以看出,热管1的冷端高于热端,在使用时能够使热管内的导热介质在冷凝后快速的返回热端。使用时,热管冷端的形状、冷端与密封铝板4的接触面积根据实际情况进行调整,如将热管冷端向上折弯,使热管冷端与密封铝板4的接触面积增大以提高传热效率。The left end of the heat pipe 1 shown in the figure is the hot end of the heat pipe, the heat absorber 2 is installed on the hot end, and the other end is the cold end of the heat pipe. When in use, under the premise of satisfying the insulation distance, the heat absorber 2 should be as close as possible to the electrical components in the gas box of the gas insulated switchgear, so that the heat absorber 2 can quickly absorb the heat generated by the electrical components and the heat released by the electrical components Release as little as possible into the airbox. There are multiple heat transfer fins installed on the heat sink 2. When installing the heat transfer fins, adjust the position of the heat transfer fins so that the placement direction of the heat transfer fins is consistent with the air flow direction near the electrical components, so that the heat sink 2 can be more efficient. Absorbs heat from nearby hot gases. The heat sink 2 and the hot end of the heat pipe 1 can be connected by an interference fit connection or by using a pressure plate and fixing the connection with a structure such as a screw. The other end of the heat pipe 1 is connected with a fixed block 3, and the connection mode between the heat pipe 1 and the fixed block 3 can be an interference fit connection or a pressure plate is used to fix the heat pipe 1 on the fixed block 3, and the fixed block 3 is fixed on the fixed block 3 by means of screw connection or the like. Seal the aluminum plate 4 on. It can be seen from the figure that the cold end of the heat pipe 1 is higher than the hot end, so that the heat transfer medium in the heat pipe can quickly return to the hot end after being condensed during use. During use, the shape of the cold end of the heat pipe and the contact area between the cold end and the sealed aluminum plate 4 are adjusted according to actual conditions, such as bending the cold end of the heat pipe upwards to increase the contact area between the cold end of the heat pipe and the sealed aluminum plate 4 to improve heat transfer efficiency .

本实施例中,密封铝板4的左侧即为气箱内部,右侧即为气箱外部。密封铝板4的外侧与热管1的冷端对应的位置上安装有散热器5,散热器5的位置和热管1的冷端对应,以保证热流的传输路径最短,传热效率最大化。散热器5上安装有多个散热翅片,散热翅片竖直放置,提高散热器与空气的热交换效率。In this embodiment, the left side of the sealed aluminum plate 4 is the inside of the air box, and the right side is the outside of the air box. A radiator 5 is installed on the outer side of the sealed aluminum plate 4 at the position corresponding to the cold end of the heat pipe 1, and the position of the radiator 5 corresponds to the cold end of the heat pipe 1, so as to ensure the shortest heat transfer path and maximize the heat transfer efficiency. A plurality of cooling fins are installed on the radiator 5, and the cooling fins are placed vertically to improve the heat exchange efficiency between the radiator and the air.

密封铝板4对对气箱单元的装配孔进行密封,保证气箱的密封性能,密封铝板4即为密封板,在其他实施例中,密封板的材质可以为其他材质,在选取材质时,选择导热效率高的材质。固定块4即为固定结构,散热器5即为散热装置,散热装置包括多个散热翅片,散热翅片竖直放置,能够提高散热装置与空气的热交换率。The sealing aluminum plate 4 seals the assembly hole of the air box unit to ensure the sealing performance of the air box. The sealing aluminum plate 4 is the sealing plate. In other embodiments, the material of the sealing plate can be other materials. When selecting the material, select Material with high thermal conductivity. The fixed block 4 is the fixed structure, and the radiator 5 is the heat dissipation device. The heat dissipation device includes a plurality of heat dissipation fins, and the heat dissipation fins are placed vertically to improve the heat exchange rate between the heat dissipation device and the air.

热管是由管壳、吸液芯和端盖组成,热管内部被抽成负压状态,而且充入了适当的工作液体,这种液体沸点低,容易挥发,管壁有吸液芯,吸液芯由毛细多孔材料构成,当热管的热端受热时,热管中的液体迅速蒸发,蒸汽在微小的压力差下流向冷端,并且释放出热量,重新凝结成液体,液体再沿多孔材料靠毛细力的作用流回热端,如此循环不止,热量便源源不断的由热管热端传至冷端。热管的导热系数是普通金属的数百倍乃至上千倍,它可以将大量的热量通过很小的截面积远距离的传输而无需外力。The heat pipe is composed of a tube shell, a liquid-absorbing core and an end cover. The inside of the heat pipe is pumped into a negative pressure state and filled with an appropriate working liquid. This liquid has a low boiling point and is easy to volatilize. The core is made of capillary porous material. When the hot end of the heat pipe is heated, the liquid in the heat pipe evaporates rapidly, and the steam flows to the cold end under a small pressure difference, and releases heat, recondenses into a liquid, and the liquid flows along the porous material by the capillary. The effect of force flows back to the hot end, and the cycle continues, and the heat is continuously transferred from the hot end of the heat pipe to the cold end. The thermal conductivity of the heat pipe is hundreds or even thousands of times that of ordinary metals, and it can transmit a large amount of heat over a long distance through a small cross-sectional area without external force.

本实用新型的气箱的传热系统利用热管的高导热特性,能够快速的将电气元件产生的热量传递至密封铝板4上,避免了电气元件产生的热量无法释放而导致绝缘失效甚至影响开关柜的安全性。同时,本实用新型中热量是通过密封铝板进行传递的,不需要考虑对传热系统的密封问题。The heat transfer system of the air box of the utility model utilizes the high thermal conductivity of the heat pipe to quickly transfer the heat generated by the electrical components to the sealed aluminum plate 4, avoiding the failure of the insulation caused by the heat generated by the electrical components and even affecting the switchgear security. At the same time, the heat in the utility model is transferred through the sealed aluminum plate, so there is no need to consider the sealing problem of the heat transfer system.

在本实用新型气箱的传热系统的其他实施例中,固定热管冷端位置的固定结构可以为其他的结构,如通过固定在密封板上的夹式结构固定热管冷端。In other embodiments of the heat transfer system of the air box of the utility model, the fixing structure for fixing the position of the cold end of the heat pipe can be other structures, such as fixing the cold end of the heat pipe through a clip-type structure fixed on the sealing plate.

在本实用新型气箱的传热系统的其他实施例中,热管冷端和热端的高度可以进行调节,如热管的冷端与热管的热端高度一致甚至冷端低于热管。In other embodiments of the heat transfer system of the air box of the present invention, the heights of the cold end and the hot end of the heat pipe can be adjusted, such as the height of the cold end of the heat pipe is consistent with the height of the hot end of the heat pipe or even lower than the heat pipe.

本实用新型开关柜气箱的具体实施例,包括箱体和箱体内的电气元件,所述箱体上设有用于密封气箱装配孔的密封板,所述箱体内设有至少一个热管,所述热管的一端用于靠近但不接触电气元件以吸收电气元件产生的热量而形成热端,热管另一端固定在所述密封板的内侧上以将热量传递至密封板上而形成冷端,所述密封板的另一侧上设有散热装置,所述箱体内还设有用于固定所述热管冷端位置的固定结构。其中热管、密封板、固定结构和散热装置的结构和位置关系均与上述的气体绝缘开关柜的传热系统中的一致,其内容在此不再赘述。The specific embodiment of the switchgear gas box of the utility model includes a box body and electrical components in the box body, the box body is provided with a sealing plate for sealing the assembly hole of the gas box, and at least one heat pipe is arranged in the box body, One end of the heat pipe is used to be close to but not in contact with the electrical components to absorb the heat generated by the electrical components to form a hot end, and the other end of the heat pipe is fixed on the inner side of the sealing plate to transfer heat to the sealing plate to form a cold end, A heat dissipation device is provided on the other side of the sealing plate, and a fixing structure for fixing the position of the cold end of the heat pipe is also provided in the box. The structure and positional relationship of the heat pipe, the sealing plate, the fixing structure and the cooling device are the same as those in the heat transfer system of the gas insulated switchgear mentioned above, and the content thereof will not be repeated here.

本实用新型气体绝缘开关柜的具体实施例,包括开关柜气箱,其结构与上述的气体绝缘开关柜气箱一致,其内容在此不再赘述。The specific embodiment of the gas insulated switchgear of the utility model includes the gas box of the switchgear, and its structure is consistent with the gas box of the gas insulated switchgear mentioned above, and its content will not be repeated here.

Claims (10)

1. a kind of heat transfer system of gas tank it is characterised in that:Including the sealing plate for sealing gas tank pilot hole, described gas tank Heat transfer system also includes at least one heat pipe, and one end of described heat pipe is used for absorbing heat and forms hot junction, and heat pipe hot junction is provided with For near but do not contact electrical equipment and be fixed on described to absorb the heat dump of the heat of electrical equipment generation, the heat pipe other end To transfer heat to be formed cold end on sealing plate on the side of sealing plate, the opposite side of described sealing plate is provided with radiating dress Put, described heat pipe cold end and heat abstractor are correspondingly arranged at the both sides of described sealing plate, the heat transfer system of described gas tank also includes For fixing the fixed structure of described heat pipe cold end position.
2. gas tank according to claim 1 heat transfer system it is characterised in that:At least one heat pipe is obliquely installed, heat pipe Cold end is higher than heat pipe hot junction.
3. gas tank according to claim 1 heat transfer system it is characterised in that:Described heat dump includes multiple heat transfer sheets.
4. the gas tank according to any one of claim 1-3 heat transfer system it is characterised in that:Described heat abstractor includes many Individual radiating fin, described radiating fin is vertically placed.
5. a kind of switch cabinet air box, including the electrical equipment in casing and casing it is characterised in that:Described casing be provided with for The sealing plate of sealing gas tank pilot hole, is provided with least one heat pipe, one end of described heat pipe is used for absorbing heat in described casing And form hot junction, heat pipe hot junction be provided near but do not contact electrical equipment with absorb electrical equipment generation heat heat absorption Device, the heat pipe other end is fixed on to transfer heat to form cold end on sealing plate on the inner side of described sealing plate, described close The opposite side of shrouding is provided with heat abstractor, and described heat pipe cold end and heat abstractor are correspondingly arranged at the both sides of described sealing plate, It is additionally provided with the fixed structure for fixing described heat pipe cold end position in described casing.
6. switch cabinet air box according to claim 5 it is characterised in that:At least one heat pipe is obliquely installed, heat pipe cold end Higher than heat pipe hot junction.
7. switch cabinet air box according to claim 5 it is characterised in that:Described heat dump includes multiple heat transfer sheets.
8. a kind of gas insulation switch cabinet, including switch cabinet air box, described switch cabinet air box includes electric in casing and casing Element it is characterised in that:Described casing is provided with the sealing plate for sealing gas tank pilot hole, is provided with least one in described casing Individual heat pipe, one end of described heat pipe is used for absorbing heat and forms hot junction, heat pipe hot junction be provided near but do not contact electrically To absorb the heat dump of the heat of electrical equipment generation, the heat pipe other end is fixed on the inner side of described sealing plate with by heat element Amount is transferred to form cold end on sealing plate, and described heat pipe hot junction is provided with heat dump, and the opposite side of described sealing plate is provided with scattered Thermal, described heat pipe cold end and heat abstractor are correspondingly arranged at the both sides of described sealing plate, be additionally provided with described casing for The fixed structure of fixing described heat pipe cold end position.
9. gas insulation switch cabinet according to claim 8 it is characterised in that:At least one heat pipe is obliquely installed, heat pipe Cold end is higher than heat pipe hot junction.
10. gas insulation switch cabinet according to claim 8 it is characterised in that:Described heat dump includes multiple heat transfer sheets.
CN201620867004.4U 2016-08-11 2016-08-11 Heat transfer system of gas insulation switch cabinet, cubical switchboard gas tank and gas tank Active CN205960484U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106253102A (en) * 2016-08-11 2016-12-21 许继集团有限公司 The heat transfer system of gas insulation switch cabinet, switch cabinet air box and gas tank
CN110635368A (en) * 2019-08-12 2019-12-31 王朝仓 Modular electric energy metering box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106253102A (en) * 2016-08-11 2016-12-21 许继集团有限公司 The heat transfer system of gas insulation switch cabinet, switch cabinet air box and gas tank
CN110635368A (en) * 2019-08-12 2019-12-31 王朝仓 Modular electric energy metering box

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Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue

Patentee after: XJ Group Corp.

Patentee after: Xuji delischer Electric Co.,Ltd.

Patentee after: STATE GRID CORPORATION OF CHINA

Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue

Patentee before: XJ Group Corp.

Patentee before: XUCHANG XUJI DRIESCHER WEGBERG ELECTRIC Co.,Ltd.

Patentee before: State Grid Corporation of China