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

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

A gas-insulated switchgear, a switchgear gas box, and a heat transfer system for the gas box

technical field

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.

Background technique

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.

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.

Utility model content

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.

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.

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.

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.

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.

Description of drawings

Fig. 1 is the schematic diagram of heat pipe in the heat transfer system embodiment of the utility model air box;

Fig. 2 is the schematic diagram of the embodiment of the heat transfer system of the utility model air box;

FIG. 3 is a top view of FIG. 2 .

detailed description

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

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 .

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 .

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.

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.

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.

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.

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.

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.

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.

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.