Cooling device for preventing tight welding settlement of branch pipe of GIS (Gas Insulated Switchgear) tank body

Abstract

The utility model discloses a cooling device for preventing tight welding settlement of a GIS tank body branch pipe, which comprises heat conduction pipes and an elastic flow guide pipe, and all the heat conduction pipes are distributed on the outer side of the branch pipe along the circumferential direction; each heat conduction pipe is bent towards the side where the corresponding branch pipe is located, and the pipe wall of each heat conduction pipe is provided with an arc-shaped heat absorption plate attached to the corresponding branch pipe. Every two adjacent heat conduction pipes are communicated through an elastic flow guide pipe, all the heat conduction pipes are bundled to the outer side of the branch pipe through the elastic force of the elastic flow guide pipes, and each arc-shaped heat absorption plate is attached to the branch pipe. The distance between each elastic flow guide pipe and the corresponding branch pipe is larger than 3 cm. One heat conduction pipe is provided with a liquid inlet pipe, and the other heat conduction pipe is provided with a liquid discharge pipe. The heat conduction pipe can continuously absorb heat after continuous coolant is introduced into the heat conduction pipe, so that the local temperature of the branch pipe is reduced, the problem of settlement formed on the surface of the branch pipe due to thermal expansion and cold contraction is effectively avoided, and the welding construction efficiency of the GIS tank body is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to GIS tank body production and manufacturing technical field, concretely relates to a kind of cooling device for preventing GIS tank body branch pipe tight welding settlement. BACKGROUND

[0002] GIS (Gas Insulated Substation) is a kind of gas insulated switchgear tank body, the tank body (shell) of GIS is usually metal material, such as aluminum alloy, etc., its main role is to provide a closed space, to isolate the internal electrical components from the environment. For example, in outdoor substation, tank shell can protect internal equipment from wind, rain, sand and other natural factors. GIS tank body design not only involves mechanical strength to withstand internal pressure, external impact force, etc., while strict welding process requirements, need to have good sealing, prevent gas leakage.

[0003] GIS tank body side is equipped with branch pipe, branch pipe is welded with GIS tank body, specifically is first set up the hole of adaptation with branch pipe on GIS tank body side, then again adopt welding process to complete fixed connection. But, in the welding process, a large amount of heat is generated, and the internal stress caused by thermal expansion and contraction leads to the settlement of the surface of the branch pipe. This is a problem that needs to be solved in the welding process of GIS tank body and branch pipe. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of cooling device for preventing GIS tank body branch pipe tight welding settlement, including heat pipe and elastic flow guide pipe;The heat pipe is equipped with multiple, and all heat pipes are distributed on the outside of branch pipe along the circumference;Each heat pipe is bent towards the side where the branch pipe is located, and the pipe wall of the heat pipe is provided with an arc-shaped heat absorption plate that is attached to the branch pipe;Each adjacent two heat pipes are connected by an elastic flow guide pipe, and all heat pipes are tightly bundled on the outside of the branch pipe by the elastic force of the elastic flow guide pipe, and each arc-shaped heat absorption plate is attached to the branch pipe;The spacing between all elastic flow guide pipes and branch pipe is greater than 3 cm;One of all heat pipes is provided with a liquid inlet pipe, and the other heat pipe is provided with a liquid outlet pipe.

[0005] The cooling device for preventing GIS tank body branch pipe tight welding settlement has the following advantages:

[0006] 1、All heat pipes surround the branch pipe, and the heat generated during welding is transferred to the heat pipes, which then carry away the heat with the help of the heat-conducting medium flowing inside, forming continuous heat dissipation, thereby reducing the local temperature of the branch pipe. The local heat at the welding site is reduced, effectively avoiding the settlement problem caused by thermal expansion and contraction on the surface of the branch pipe.

[0007] 2. The heat pipe is bound to the outside of the branch pipe via an elastically deformable guide tube. On one hand, the elastic guide tube acts as an elastic connector for quick fixation of the heat pipe; the binding method is simple, disassembly is convenient, and it can be applied to branch pipes of different diameters, making it highly versatile. On the other hand, the heat pipe acts as a pipe joint, solving the connection problem between two adjacent heat pipes, facilitating the flow of coolant, and ensuring good sealing.

[0008] 3. Compared with existing GIS tank cooling methods, the heat pipe can continuously absorb heat after a continuous flow of coolant, meeting the requirements of online continuous welding process between the GIS tank and branch pipes, and effectively improving the welding construction efficiency of the GIS tank.

[0009] The preferred embodiment of this utility model: the heat-conducting pipe and the corresponding arc-shaped heat-absorbing plate are integrally formed, both made of copper or aluminum, using an integrated molding technology, allowing the heat absorbed by the arc-shaped heat-absorbing plate to be rapidly transferred to the heat-conducting pipe. The use of copper or aluminum, with their excellent thermal conductivity, enhances thermal performance. Furthermore, a thermally conductive silicone pad is provided between each arc-shaped heat-absorbing plate and the branch pipe. On one hand, the thermal conductivity of the silicone pad itself further improves the thermal conductivity of the heat-conducting pipe; on the other hand, the silicone pad can fill the tiny gaps between the arc-shaped heat-absorbing plate and the branch pipe. For example, if the arc-shaped heat-absorbing plate is used with branch pipes of different diameters, the two cannot fully fit together. The silicone pad itself is 1-2 cm thick; the arc-shaped heat-absorbing plate presses against the silicone pad, and the deformation of the silicone pad compensates for the gaps between the arc-shaped heat-absorbing plate and the branch pipe, effectively solving the problem of incompatibility between the arc-shaped heat-absorbing plate and the branch pipe.

[0010] The preferred embodiment of this utility model is that the width of each arc-shaped heat-absorbing plate is greater than 1.5 times the diameter of the corresponding heat-conducting pipe, which greatly increases the heat absorption area of ​​the arc-shaped heat-absorbing plate and improves the heat dissipation efficiency of the heat-conducting pipe.

[0011] The preferred embodiment of this utility model is as follows: To satisfy the connection and communication relationships of each heat pipe, both ends of each heat pipe extend beyond the end face of the corresponding arc-shaped heat absorber plate, and the extended heat pipe is provided with a groove for connecting with the elastic guide pipe. The middle part of the elastic guide pipe is a retractable corrugated pipe section, and both ends of the elastic guide pipe are connecting pipe sections, the inner diameter of which is adapted to the outer diameter of both ends of the heat pipe. The elastic guide pipe is sleeved on the end of the heat pipe, and then the connecting pipe sections are tightly bound into the corresponding grooves at both ends of each heat pipe using pipe clamps, thereby sealing one end of the elastic guide pipe on the corresponding end of the heat pipe.

[0012] A preferred embodiment of this invention further includes an external cooling source. The inlet pipe and outlet pipe are respectively connected to the external cooling source. Coolant from the external cooling source flows into the inlet pipe and returns through the outlet pipe, thereby carrying away the heat from all the heat-conducting pipes. To improve the heat absorption path of the coolant, the inlet pipe and outlet pipe are located on the same diameter of the branch pipe, that is, the pipe path between the inlet pipe and the outlet pipe is maximized. After entering through the inlet pipe, the coolant from the external cooling source flows to the outlet pipe in two separate paths, and finally returns to the external cooling source through the outlet pipe, forming a continuous cooling pipeline. This can keep the local temperature of the branch pipe from becoming too high during the welding process. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram showing the connection between the GIS tank and the branch pipe in this utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 for Figure 2 A schematic diagram of the cross-section of the heat pipe;

[0017] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0018] Figure 5 The three-dimensional heat pipe in this utility model Figure 1 ;

[0019] Figure 6 The three-dimensional heat pipe in this utility model Figure 2 ;

[0020] Figure 7 The three-dimensional heat pipe in this utility model Figure 3 .

[0021] Attached reference numerals: 1. Heat-conducting pipe; 2. Elastic flow guide pipe; 3. Arc-shaped heat-absorbing plate; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Thermally conductive silicone pad; 7. Slot; 8. Corrugated pipe section; 9. Connecting pipe section; 10. Pipe clamp; 11. GIS tank body; 12. Branch pipe. Detailed Implementation

[0022] In view of the deficiencies in the prior art, the present utility model person has long-term research and a large number of practices, and the technical scheme of the present utility model is obtained. The technical scheme, its implementation process and principles will be further explained in the following with the drawings in the embodiments of the present application and specific implementation cases.

[0023] It should be noted that the embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and cannot be understood as limiting the present utility model, and the described embodiments are only a part of the embodiments of the present utility model, but not all the embodiments. Based on the embodiments in the present utility model, the present utility model covers any alternative, modification, equivalent method and scheme defined by the claims, and all other embodiments obtained by the person skilled in the art without creative labor, which belong to the protection scope of the present utility model.

[0024] In the description of the present application, unless otherwise explicitly specified and limited, the technical terms or scientific terms used should be understood as the usual meaning understood by the person skilled in the art in the field to which the present application belongs, and the terms such as "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or it can be a resisting connection or an integral connection; for the person skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] As shown in Figure 1 , Figure 2 and Figure 3 , the present embodiment provides a cooling device for preventing tight welding and settlement of GIS tank branch pipe, which comprises heat pipes 1 and elastic flow guide pipes 2, wherein the heat pipes 1 are provided in plurality, the number of heat pipes 1 is determined according to the outer diameter of the branch pipe 12, the larger the outer diameter of the branch pipe 12, the more the number of heat pipes 1, and all the heat pipes 1 are distributed on the outer side of the branch pipe 12 along the circumference. Specifically, each adjacent two heat pipes 1 are communicated through the elastic flow guide pipe 2, and all the heat pipes 1 are bundled on the outer side of the branch pipe 12 through the elastic force of the elastic flow guide pipe 2, and the elastic flow guide pipe 2 satisfies the connection relationship and communication relationship of the heat pipes 1. Since the material of the elastic flow guide pipe 2 is rubber material, in order to avoid damage of the elastic flow guide pipe 2 by the high-temperature branch pipe 12, all the elastic flow guide pipes 2 need to maintain a distance of more than 3 centimeters from the branch pipe 12, and the elastic flow guide pipe 2 cannot be in direct contact with the branch pipe 12.

[0026] In order to improve the heat absorption efficiency of the heat pipes 1, the structure of the heat pipes 1 is optimized as follows in the present embodiment:

[0027] As shown in Figure 5 , Figure 6 and Figure 7As shown, the structure of each heat pipe 1 is identical, each heat pipe 1 is bent towards the side where the branch pipe 12 is located, and the pipe wall of the heat pipe 1 is provided with an arc-shaped heat absorption plate 3 which is attached to the branch pipe 12. The bent heat pipe 1 and the bent arc-shaped heat absorption plate 3 are adapted to the curvature of the outer surface of the branch pipe 12, so that the heat pipe 1 and the arc-shaped heat absorption plate 3 extend along the circumference of the branch pipe 12. The width of each arc-shaped heat absorption plate 3 is greater than 1.5 times the diameter of the corresponding heat pipe 1, greatly increasing the heat absorption area of the arc-shaped heat absorption plate 3 and improving the heat dissipation efficiency of the heat pipe 1.

[0028] However, as shown in Figure 1 , Figure 2 and Figure 3 , one of the heat pipes 1 is provided with an inlet pipe 4 and another heat pipe 1 is provided with an outlet pipe 5. The inlet pipe 4 and the outlet pipe 5 are located on the same diameter of the branch pipe 12, that is, the pipe path between the inlet pipe 4 and the outlet pipe 5 is maximized. The present embodiment also includes an external cooling source, and the inlet pipe 4 and the outlet pipe 5 are respectively connected to the external cooling source. The cooling liquid of the external cooling source flows into the inlet pipe 4 and backflows from the outlet pipe 5, thereby taking away the heat of all the heat pipes 1. The external cooling source can be a tap water source or a refrigeration system with circulation function, as long as it has a flowing cooling medium. The cooling liquid of the external cooling source enters the inlet pipe 4 and flows to the outlet pipe 5 in two ways, and finally backflows to the external cooling source through the outlet pipe 5, forming a continuous cooling pipeline, which can keep the local temperature of the branch pipe 12 from being too high during the welding process.

[0029] In order to further improve the heat dissipation efficiency of the heat pipe 1, the heat pipe 1 and the corresponding arc-shaped heat absorption plate 3 in the present embodiment are integrated and made of copper or aluminum material. The heat absorbed by the arc-shaped heat absorption plate 3 is quickly transferred to the heat pipe 1 by using the one-piece molding technology. The use of copper or aluminum with excellent heat conduction performance improves the heat conduction performance. In addition, as shown in Figure 6 and Figure 7 , a heat-conducting silica gel pad 6 is arranged between each arc-shaped heat absorption plate 3 and the branch pipe 12. On the one hand, the heat-conducting silica gel pad 6 itself can further improve the heat conduction performance of the heat pipe 1, and on the other hand, the heat-conducting silica gel pad 6 can fill the small gap between the arc-shaped heat absorption plate 3 and the branch pipe 12. For example, the arc-shaped heat absorption plate 3 is used for branch pipes 12 with different diameters, and the two cannot be fully attached. The heat-conducting silica gel pad 6 itself has a thickness of 1-2 cm, and the arc-shaped heat absorption plate 3 compresses the heat-conducting silica gel pad 6. The gap between the arc-shaped heat absorption plate 3 and the branch pipe 12 is compensated by the deformation of the heat-conducting silica gel pad 6, effectively solving the problem of incompatibility between the arc-shaped heat absorption plate 3 and the branch pipe 12.

[0030] As shown in Figure 4 , Figure 5 and Figure 6As shown, in order to quickly connect the heat pipes 1 and the elastic flow guide pipes 2, the two ends of each heat pipe 1 are beyond the end surface of the corresponding arc-shaped heat absorption plate 3, and the heat pipe 1 beyond the end surface is provided with a clamping groove 7 for connecting with the elastic flow guide pipe 2. The middle part of the elastic flow guide pipe 2 is a stretchable corrugated pipe section 8, and the two ends of the elastic flow guide pipe 2 are connected pipe sections 9, and the inner diameter of the connected pipe sections 9 is matched with the outer diameter of the two ends of the heat pipe 1. The elastic flow guide pipe 2 is sleeved on the end of the heat pipe 1, and then the connected pipe sections 9 are tightly bundled in the corresponding clamping groove 7 through pipe clamps 10 at the two ends of each heat pipe 1, so that one end of the elastic flow guide pipe 2 is tightly sleeved on the corresponding end of the heat pipe 1, and quick connection is realized. Conversely, the pipe clamps 10 are removed to realize quick disassembly, meet the quick disassembly and quick assembly requirements, and are beneficial to improving the welding process efficiency of the GIS tank body 11 and the branch pipe 12.

[0031] The heat pipes 1 in the embodiment are bundled outside the branch pipe 12 through the elastic flow guide pipes 2 which can elastically deform. After all the heat pipes 1 surround the branch pipe 12, the heat generated in the welding process is transferred to the heat pipes 1, and the heat pipes 1 take away the heat by means of the heat-conducting medium flowing in the heat pipes 1, so that continuous heat dissipation is formed, thereby reducing the local temperature of the branch pipe 12. The local heat at the welding place is reduced, and the settlement problem formed on the surface of the branch pipe 12 due to thermal expansion and cold contraction is effectively avoided.

[0032] It should be understood that the above embodiment is only for illustrating the technical concept and characteristics of the present application, and its purpose is to enable those skilled in the art to understand the content of the present application and implement it, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary skilled in the art to which the present application belongs, without departing from the concept of the present application, some simple deductions or substitutions can be made, and any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A cooling device for preventing tight welding settlement of branch pipes of a GIS tank body, characterized in that: The heat conducting pipes and elastic flow guide pipes are included. The heat conducting pipes are provided in plurality, and all the heat conducting pipes are distributed along the circumference outside the branch pipe. Each heat conducting pipe is curved towards the side where the branch pipe is located, and the pipe wall of the heat conducting pipe is provided with an arc heat absorbing plate which is attached to the branch pipe. Each two adjacent heat conducting pipes are communicated through the elastic flow guide pipe, and all the heat conducting pipes are tightly bound outside the branch pipe through the elastic force of the elastic flow guide pipe.

2. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 1, characterized in that: Each arc heat absorbing plate is attached to the branch pipe.

3. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 1, characterized in that: The width of each arc heat absorbing plate is greater than 1.5 times of the diameter of the corresponding heat conducting pipe.

4. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 1, characterized in that: Each arc heat absorbing plate is provided with a heat conducting silica gel pad between the arc heat absorbing plate and the branch pipe.

5. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 1, characterized in that: The two ends of each heat conducting pipe are beyond the end surface of the corresponding arc heat absorbing plate, and the beyond heat conducting pipe is provided with a clamping groove for connecting with the elastic flow guide pipe.

6. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 5, characterized in that: The middle part of the elastic flow guide pipe is a stretchable bellows section, and the two ends of the elastic flow guide pipe are connecting pipe sections, and the inner diameter of the connecting pipe section is matched with the outer diameter of the two ends of the heat conducting pipe.

7. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 6, characterized in that: The two ends of each heat conducting pipe are tightly bound in the corresponding clamping groove through the pipe clamp.

8. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to claim 1, characterized in that: The liquid inlet pipe and the liquid outlet pipe are located on the same diameter of the branch pipe.

9. The cooling device for preventing tight welding settlement of branch pipes of a GIS tank according to any one of claims 1-8, characterized in that: An external cooling source is further included, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the external cooling source, and the cooling liquid of the external cooling source flows from the liquid inlet pipe and backflows from the liquid outlet pipe, thereby taking away the heat of all the heat conducting pipes.

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