Shell heat dissipation sealing cover for GIS (Gas Insulated Switchgear)

Abstract

The utility model belongs to the technical field of GIS accessories, and particularly relates to a shell heat dissipation sealing cover for a GIS, which comprises a sealing cover outer cover body and an inner heat dissipation cover plate. A sealing cover outer cover body connecting flange is arranged on the sealing cover outer cover body in an extending mode. After the sealing cover outer cover body connecting flange is fixedly connected with the shell access hole flange, the sealing cover outer cover body covers the inner heat dissipation cover plate, and one side face of the inner heat dissipation cover plate is tightly attached to the end face of the shell access hole. According to the utility model, through the cooperative arrangement of the sealing cover outer cover body and the inner heat dissipation cover plate, air which enters the ventilation cavity of the sealing cover outer cover body from the air inlet and is discharged out of the ventilation cavity of the sealing cover outer cover body from the air outlet can take away heat in the shell access hole which is rapidly and fully obtained by the inner heat dissipation cover plate; according to the GIS shell access hole heat dissipation device, the heat dissipation effect on the GIS shell access hole can be achieved more quickly, the sealing effect of the shell access hole can be guaranteed, the sealing cover outer cover can protect the internal structure of the ventilation cavity, and the GIS shell access hole heat dissipation device is convenient to mount and dismount, simple in structure and reliable to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of GIS accessories, in particular to a shell heat dissipation cover for GIS. Background Art

[0002] GIS (GAS INSULATED SWITCHGEAR) is the English abbreviation for gas-insulated fully enclosed switchgear. GIS is generally composed of circuit breakers, disconnectors, grounding switches, transformers, lightning arresters, busbars, connectors and outgoing terminals. These devices or components are all enclosed in a metal grounded casing filled with insulating gas.

[0003] In the case where electronic devices or connectors are densely arranged, an inspection port is usually provided for maintenance purposes. The inspection port is usually sealed by connecting a flange and a bolt to a cover. A large amount of heat is generated during the use of GIS, especially in the case where electronic devices are densely arranged, that is, where some inspection ports are arranged. The heat generated will be even higher. However, the heat dissipation capacity of the GIS case itself is limited, and it is not possible to quickly dissipate heat at the inspection port of the GIS case. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a shell heat dissipation cover for GIS.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A shell heat dissipation cover for GIS, comprising an outer cover body 1 and an inner heat dissipation cover plate 2;

[0007] A ventilation cavity is formed inside the cover outer cover body 1, and an air inlet 101 and an air outlet 102 communicating with the ventilation cavity are respectively provided on the outer peripheral surface of the cover outer cover body 1, and one end of the cover outer cover body 1 has an opening communicating with the ventilation cavity, and an inner heat dissipation cover plate inlay groove is recessed on the end surface of one end of the cover outer cover body 1 and at the outer peripheral position of the opening of the cover outer cover body 1, and the inner heat dissipation cover plate 2 is embedded in the inner heat dissipation cover plate inlay groove, and a cover outer cover body connecting flange 103 is extended outward on the outer peripheral surface at one end of the cover outer cover body 1, and the cover outer cover body connecting flange 103 is fixedly connected to the flange of the outer shell inspection port by connecting bolts;

[0008] After the cover outer cover connecting flange 103 is fixedly connected to the flange of the outer shell inspection port, the cover outer cover 1 covers the inner heat dissipation cover plate 2, and one side of the inner heat dissipation cover plate 2 is tightly attached to the end face of the outer shell inspection port.

[0009] An annular sealing gasket 3 is provided between the bottom surface of the inner heat dissipation cover plate embedding groove and the other side surface of the inner heat dissipation cover plate 2 away from the outer shell inspection opening.

[0010] A sealing ring installation groove is provided on the end surface of one end of the outer cover body 1 and at the outer peripheral position of the inner heat dissipation cover plate embedding groove, and a sealing ring 4 is embedded in the sealing ring installation groove; after the outer cover body connecting flange 103 is fixedly connected to the outer shell inspection port flange, the sealing ring 4 is in close contact with the end surface of the outer shell inspection port.

[0011] A cylindrical flange 201 is welded on one side of the inner heat dissipation cover plate 2 close to the outer shell inspection opening, and the size of the outer circumference of the cylindrical flange 201 forms a transition fit with the size of the inner circumference of the outer shell inspection opening.

[0012] A plurality of parallel heat dissipation fins A202 are welded on one side of the inner heat dissipation cover plate 2 close to the outer shell inspection port, and a plurality of parallel heat dissipation fins B203 are welded on the other side of the inner heat dissipation cover plate 2 away from the outer shell inspection port.

[0013] A plurality of U-shaped heat-conducting tubes 5 are arranged in parallel on the inner heat-dissipating cover plate 2, and the middle part of each of the U-shaped heat-conducting tubes 5 passes through and directly contacts the inner heat-dissipating cover plate 2, one end of each of the U-shaped heat-conducting tubes 5 extends to the side of the inner heat-dissipating cover plate 2 close to the outer shell inspection port, and passes through the adjacent heat-dissipating fin plate A202 in sequence, and the other end of each of the U-shaped heat-conducting tubes 5 extends to the other side of the inner heat-dissipating cover plate 2 away from the outer shell inspection port, and passes through the adjacent heat-dissipating fin plate B203 in sequence.

[0014] The air inlet 101 faces directly downward, and the air outlet 102 faces directly upward. The axial center line of the air inlet 101 and the axial center line of the air outlet 102 are collinear and perpendicular to the horizontal plane. The length directions of all the heat dissipating fins A202 and the length directions of the heat dissipating fins B203 are parallel to the axial center line of the air inlet 101, and the length directions of all the U-shaped heat pipes 5 are parallel to the horizontal plane.

[0015] A fan 7 is mounted on the outer opening of the air outlet 102 via a plurality of mounting screws A6.

[0016] A filter cotton installation box 8 is provided at the opening located on the outside of the air inlet 101, and a filter cotton inlay groove is formed inside the filter cotton installation box 8, in which filter cotton 10 is embedded, and a box cover 9 for covering the filter cotton inlay groove is provided on the outside of the filter cotton installation box 8, and a vent A801 ​​connected with the filter cotton inlay groove and the air inlet 101 is formed on the filter cotton installation box 8, and a vent B901 connected with the external environment and the filter cotton inlay groove is formed on the box cover 9.

[0017] The filter cotton installation box 8 and the box cover 9 are penetrated by a plurality of installation screws B11 , and each of the installation screws B11 is respectively connected to the opening of the air inlet 101 located on the outside through a thread.

[0018] The advantages and positive effects of the utility model are:

[0019] The utility model adopts the coordinated arrangement of the sealing outer cover body and the inner heat dissipation cover plate, so that the gas entering the ventilation cavity of the sealing outer cover body from the air inlet and being discharged from the ventilation cavity of the sealing outer cover body from the air outlet can quickly and fully take away the heat in the outer shell inspection port that is obtained by the inner heat dissipation cover plate, so that the heat dissipation at the GIS outer shell inspection port can be achieved more quickly and the sealing effect of the outer shell inspection port can be ensured. The sealing outer cover body can also protect the structure inside the ventilation cavity to avoid damage. The utility model is convenient to install and disassemble, has a simple structure and is reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a side of the inner heat dissipation cover plate of the utility model close to the outer shell inspection port;

[0022] Figure 3 This is a schematic diagram of the connection arrangement structure of the utility model and the housing inspection port;

[0023] Figure 4 for Figure 1 Enlarged view of point A.

[0024] In the figure: 1 is the outer cover body, 101 is the air inlet, 102 is the air outlet, 103 is the outer cover body connecting flange, 2 is the inner heat dissipation cover plate, 201 is the cylindrical convex edge, 202 is the heat dissipation fin A, 203 is the heat dissipation fin B, 3 is the annular sealing gasket, 4 is the sealing ring, 5 is the U-shaped heat pipe, 6 is the mounting screw A, 7 is the fan, 8 is the filter cotton mounting box, 801 is the vent A, 9 is the box cover, 901 is the vent B, 10 is the filter cotton, 11 is the mounting screw B; 001 is the shell inspection port, 0011 is the shell inspection port flange, and 002 is the connecting bolt. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 The utility model is further described in detail.

[0026] A heat dissipation cover for a GIS housing, such as Figure 1-4 As shown, this embodiment includes an outer cover body 1 and an inner heat dissipation cover plate 2.

[0027] A ventilation cavity is formed inside the cover outer cover body 1, and an air inlet 101 and an air outlet 102 communicating with the ventilation cavity are respectively arranged on the outer peripheral surface of the cover outer cover body 1, and one end of the cover outer cover body 1 has an opening communicating with the ventilation cavity, and an annular inner heat dissipation cover plate embedding groove is recessed on the end surface of one end of the cover outer cover body 1 and at the outer peripheral position of the opening of the cover outer cover body 1, and the inner heat dissipation cover plate 2 is embedded in the inner heat dissipation cover plate embedding groove. A cover outer cover body connecting flange 103 is extended outward on the outer peripheral surface at one end of the cover outer cover body 1, and the cover outer cover body connecting flange 103 is fixedly connected to the outer shell inspection port flange 0011 by connecting bolts 002, and can directly replace the cover of the inspection port in the prior art.

[0028] After the cover outer cover connecting flange 103 is fixedly connected with the outer shell inspection port flange 0011, the cover outer cover 1 covers the inner heat dissipation cover plate 2, and one side of the inner heat dissipation cover plate 2 is closely attached to the end face of the outer shell inspection port 001, so as to directly seal the outer shell inspection port 001, and the cover outer cover 1 plays a role of pressing and protecting the inner heat dissipation cover plate 2. The external environment gas enters the ventilation cavity from the air inlet 101 and is discharged from the air outlet 102, taking away the heat in the outer shell inspection port 001 obtained by the inner heat dissipation cover plate 2, and does not exchange with the internal gas of the outer shell inspection port 001.

[0029] Specifically, if Figure 3 As shown, in this embodiment, an annular sealing gasket 3 is provided between the bottom surface of the inner heat dissipation cover plate inlay groove and the other side surface of the inner heat dissipation cover plate 2 away from the outer shell inspection opening 001. The annular sealing gasket 3 adopts a sealing gasket product of the prior art. Through the provision of the annular sealing gasket 3, the cover outer cover body 1 can fully press the inner heat dissipation cover plate 2, and then one side surface of the inner heat dissipation cover plate 2 is closely attached to the end surface of the outer shell inspection opening 001, so as to ensure that the inner heat dissipation cover plate 2 can reliably cover the outer shell inspection opening 001, and the annular sealing gasket 3 also plays a role in strengthening the sealing of the inner heat dissipation cover plate inlay groove.

[0030] like Figure 3 As shown, in this embodiment, a sealing ring installation groove is provided on the end surface of one end of the cover outer cover body 1 and at the outer peripheral position of the inner heat dissipation cover plate inlay groove, and a sealing ring 4 is inlaid in the sealing ring installation groove. In this embodiment, the sealing ring 4 adopts the O-type sealing ring of the prior art. After the cover outer cover body connection flange 103 is fixedly connected with the outer shell inspection port flange 0011, the sealing ring 4 is in close contact with the end surface of the outer shell inspection port 001, which can further play a sealing role at the contact surface between the cover outer cover body connection flange 103 and the outer shell inspection port flange 0011.

[0031] Specifically, if Figure 2 and Figure 3As shown, in this embodiment, a cylindrical flange 201 is welded on one side of the inner heat dissipation cover plate 2 close to the outer shell inspection opening 001. The size of the outer circumference of the cylindrical flange 201 forms a transition fit with the size of the inner circumference of the outer shell inspection opening 001, and also serves to strengthen the sealing of the connection between the inner heat dissipation cover plate 2 and the outer shell inspection opening 001. In addition, the cylindrical flange 201 is in close contact with the inner circumference of the outer shell inspection opening 001, which makes it easy for the heat of the outer shell itself to be transferred to the inner heat dissipation cover plate 2 and accelerates the heat dissipation of the outer shell itself.

[0032] Specifically, if Figure 1-3 As shown, in this embodiment, a plurality of parallel heat dissipation fins A202 are welded on one side of the inner heat dissipation cover plate 2 close to the outer shell inspection port 001, and a plurality of parallel heat dissipation fins B203 are welded on the other side of the inner heat dissipation cover plate 2 away from the outer shell inspection port 001. In this embodiment, the heat dissipation fins A202 are all located on the inner side of the cylindrical convex edge 201. The heat dissipation fins A202 can increase the contact area with the gas to fully obtain the heat of the air at the outer shell inspection port 001, and transfer it to the inner heat dissipation cover plate 2, and then the heat of the inner heat dissipation cover plate 2 is taken away by the gas flowing in the ventilation cavity. The setting of the heat dissipation fins B203 allows the heat reaching the inner heat dissipation cover plate 2 to be further conducted to the heat dissipation fins B203, and increases the contact area with the gas flowing in the ventilation cavity, thereby allowing the gas passing through the heat dissipation fins B203 to take away the heat more effectively.

[0033] In this embodiment, a plurality of U-shaped heat conducting pipes 5 are arranged in parallel on the inner heat dissipation cover plate 2, and the middle of each U-shaped heat conducting pipe 5 passes through and directly contacts the inner heat dissipation cover plate 2, one end of each U-shaped heat conducting pipe 5 extends to the side of the inner heat dissipation cover plate 2 close to the outer shell inspection port 001, and passes through the adjacent heat dissipation fin plate A 202 in sequence, and the other end of each U-shaped heat conducting pipe 5 extends to the other side of the inner heat dissipation cover plate 2 away from the outer shell inspection port 001, and passes through the adjacent heat dissipation fin plate B 203 in sequence. The arrangement of the U-shaped heat conducting pipe 5 can further accelerate the heat transfer between the heat dissipation fin plate A 202 and the heat dissipation fin plate B 203. In this embodiment, each U-shaped heat conducting pipe 5 is provided with heat-conducting silica gel and sealed at the place where it passes through the inner heat dissipation cover plate 2, and the arrangement method adopts the existing technology.

[0034] like Figure 1As shown, in this embodiment, when used and installed, the air inlet 101 can be oriented directly downward, and the air outlet 102 can be oriented directly upward, so that the air inlet 101 can effectively extract the air with a lower temperature below the external environment, and the air outlet 102 can discharge the air with a higher temperature above the external environment to ensure the ventilation and heat dissipation effect. The axial center line of the air inlet 101 and the axial center line of the air outlet 102 are collinear and both perpendicular to the horizontal plane, the length direction of all the heat dissipation fins A 202 and the length direction of the heat dissipation fins B 203 are parallel to the axial center line of the air inlet 101, and the length direction of all the U-shaped heat conduction pipes 5 are parallel to the horizontal plane. The gas entering from the air inlet 101 and discharged from the air outlet 102 can pass smoothly between the heat dissipation fins B 203 and fully take away the heat. In this embodiment, the inner heat dissipation cover plate 2 and the cylindrical convex edge 201, the heat dissipation fin plate A 202, and the heat dissipation fin plate B 203 are integral structural parts welded by metal materials with good thermal conductivity, for example, they can be made of copper, aluminum alloy, etc. In this embodiment, the U-shaped heat conduction pipe 5 adopts the existing technology and is a heat transfer element that transfers heat by evaporation and condensation of liquid in a fully enclosed vacuum tube and by utilizing the principle of capillary action fluid.

[0035] Specifically, if Figure 1 As shown, in this embodiment, a fan 7 is installed at the opening of the air outlet 102 located on the outside through a plurality of mounting screws A6, which is convenient for installation and removal. In this embodiment, the fan 7 adopts a commercially available micro fan product, which is independently controlled by an external controller and does not share a control system with the GIS to avoid mutual interference and facilitate control. By setting the fan 7, the speed of discharging the gas in the ventilation cavity from the air outlet 102 can be accelerated.

[0036] Specifically, if Figure 1 and Figure 4 As shown, in this embodiment, a filter cotton installation box 8 is provided at the opening located on the outside of the air inlet 101, a filter cotton inlay groove is formed inside the filter cotton installation box 8, and a filter cotton 10 is embedded in the filter cotton inlay groove. A box cover 9 for covering the filter cotton inlay groove is provided on the outside of the filter cotton installation box 8. A vent A 801 connected to the filter cotton inlay groove and the air inlet 101 is provided on the filter cotton installation box 8, and a vent B 901 connected to the external environment and the filter cotton inlay groove is provided on the box cover 9. The gas from the external environment enters the filter cotton inlay groove through the vent B 901 of the box cover 9 and is filtered by the filter cotton 10. The filtered gas enters the ventilation cavity from the vent A 801 on the filter cotton installation box 8, which can prevent dust and debris from entering the ventilation cavity inside the cover outer housing 1 from the air inlet 101 and affecting the use, so as to ensure reliable operation. The filter cotton installation box 8 and the box cover 9 are penetrated by a plurality of installation screws B11, and each installation screw B11 is respectively connected to the opening of the air inlet 101 located on the outside through a thread, so that installation and disassembly are convenient.

[0037] Working principle:

[0038] By directly closing the outer shell inspection opening 001 with the inner heat dissipation cover plate 2 and pressing the inner heat dissipation cover plate 2 with the cover outer cover body 1, the heat in the outer shell inspection opening 001 quickly and fully obtained by the inner heat dissipation cover plate 2 can be taken away by the gas entering the ventilation cavity from the air inlet 101 and discharged from the ventilation cavity from the air outlet 102 while ensuring the sealing effect of the outer shell inspection opening 001, so that the heat dissipation at the GIS outer shell inspection opening 001 can be achieved more quickly. The arrangement of the cylindrical convex edge 201, the heat dissipation fin plate A 202, and the heat dissipation fin plate B 203 can enhance the effect of the inner heat dissipation cover plate 2 absorbing and conducting heat, and the cover outer cover body 1 can also protect the structure inside the ventilation cavity to avoid damage.

Claims

1. A heat dissipation cover for a GIS shell, characterized in that: It comprises an outer cover body (1) and an inner heat dissipation cover plate (2); A ventilation cavity is formed inside the cover outer cover body (1); an air inlet (101) and an air outlet (102) communicating with the ventilation cavity are respectively provided on the outer peripheral surface of the cover outer cover body (1); one end of the cover outer cover body (1) has an opening communicating with the ventilation cavity; an inner heat dissipation cover plate embedding groove is recessed on the end surface of one end of the cover outer cover body (1) and at the outer peripheral position of the opening of the cover outer cover body (1); the inner heat dissipation cover plate (2) is embedded in the inner heat dissipation cover plate embedding groove; a cover outer cover body connecting flange (103) is extended outward on the outer peripheral surface at one end of the cover outer cover body (1); the cover outer cover body connecting flange (103) is fixedly connected to the flange of the outer shell inspection port by connecting bolts; After the cover outer cover connecting flange (103) is fixedly connected to the flange of the outer shell inspection opening, the cover outer cover (1) covers the inner heat dissipation cover plate (2), and one side of the inner heat dissipation cover plate (2) is tightly attached to the end surface of the outer shell inspection opening.

2. The GIS shell heat dissipation cover according to claim 1, characterized in that: An annular sealing gasket (3) is provided between the bottom surface of the inner heat dissipation cover plate embedding groove and the other side surface of the inner heat dissipation cover plate (2) away from the outer shell inspection opening.

3. The GIS shell heat dissipation cover according to claim 1, characterized in that: A sealing ring installation groove is provided on the end surface of one end of the cover outer housing (1) and at the outer peripheral position of the inner heat dissipation cover plate embedding groove, and a sealing ring (4) is embedded in the sealing ring installation groove; after the cover outer housing connection flange (103) is fixedly connected to the outer housing inspection opening flange, the sealing ring (4) is in close contact with the end surface of the outer housing inspection opening.

4. The GIS shell heat dissipation cover according to claim 1, characterized in that: A cylindrical convex edge (201) is welded on one side of the inner heat dissipation cover plate (2) close to the outer shell inspection opening, and the size of the outer circumference of the cylindrical convex edge (201) forms a transition fit with the size of the inner circumference of the outer shell inspection opening.

5. The GIS shell heat dissipation cover according to claim 1, characterized in that: A plurality of parallel heat dissipation fins A (202) are welded on one side of the inner heat dissipation cover plate (2) close to the outer shell inspection opening, and a plurality of parallel heat dissipation fins B (203) are welded on the other side of the inner heat dissipation cover plate (2) away from the outer shell inspection opening.

6. The GIS shell heat dissipation cover according to claim 5, characterized in that: A plurality of U-shaped heat-conducting tubes (5) are arranged in parallel on the inner heat-dissipating cover plate (2), the middle of each of the U-shaped heat-conducting tubes (5) respectively passes through and directly contacts the inner heat-dissipating cover plate (2), one end of each of the U-shaped heat-conducting tubes (5) extends to a side of the inner heat-dissipating cover plate (2) close to the outer shell inspection port, and passes through the adjacent heat-dissipating fin plate A (202) in sequence, and the other end of each of the U-shaped heat-conducting tubes (5) extends to the other side of the inner heat-dissipating cover plate (2) away from the outer shell inspection port, and passes through the adjacent heat-dissipating fin plate B (203) in sequence.

7. The GIS housing heat dissipation cover according to claim 6, characterized in that: The air inlet (101) faces directly downward, and the air outlet (102) faces directly upward. The axial center line of the air inlet (101) and the axial center line of the air outlet (102) are collinear and perpendicular to a horizontal plane. The length directions of all the heat dissipation fins A (202) and the length directions of the heat dissipation fins B (203) are parallel to the axial center line of the air inlet (101), and the length directions of all the U-shaped heat conduction pipes (5) are parallel to a horizontal plane.

8. The GIS shell heat dissipation cover according to claim 1, characterized in that: A fan (7) is mounted on the outer opening of the air outlet (102) via a plurality of mounting screws A (6).

9. The GIS housing heat dissipation cover according to claim 1, characterized in that: A filter cotton installation box (8) is provided at the opening located on the outside of the air inlet (101), a filter cotton embedding groove is formed inside the filter cotton installation box (8), filter cotton (10) is embedded in the filter cotton embedding groove, a box cover (9) for covering the filter cotton embedding groove is provided on the outside of the filter cotton installation box (8), a vent hole A (801) connected to the filter cotton embedding groove and the air inlet (101) is formed on the filter cotton installation box (8), and a vent hole B (901) connected to the external environment and the filter cotton embedding groove is formed on the box cover (9).

10. The GIS housing heat dissipation cover according to claim 9, characterized in that: The filter cotton installation box (8) and the box cover (9) are simultaneously penetrated by a plurality of installation screws B (11), and each of the installation screws B (11) is respectively connected to the opening located on the outside of the air inlet (101) through a thread.

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