Medium-voltage environment-friendly gas switch cabinet

Abstract

The utility model discloses a medium-voltage environment-friendly gas switch cabinet, which comprises an upper gas tank and a lower gas tank, a plurality of outer reinforcing ribs are arranged on the outer walls of the upper gas tank and the lower gas tank, a plurality of inner reinforcing ribs are arranged on the peripheries of the inner walls of the upper gas tank and the lower gas tank, a plurality of reinforcing beams are arranged on the inner reinforcing ribs, and the reinforcing beams are arranged on the outer walls of the upper gas tank and the lower gas tank. A plurality of notches are formed in the reinforcing beam, and the inner reinforcing ribs are installed in the notches. The outer reinforcing ribs and the inner reinforcing ribs are distributed at equal intervals, so that uniform support is provided, stress can be uniformly dispersed when the gas tank bears internal SF6 gas pressure, the phenomenon of local stress concentration is reduced, the inflation strength of the upper gas tank and the lower gas tank is guaranteed, and the upper gas tank and the lower gas tank are prevented from being deformed when being filled with SF6 gas.

Description

Technical Field

[0001] This utility model relates to the field of gas switchgear technology, specifically to a medium-voltage environmentally friendly gas switchgear. Background Technology

[0002] Gas-insulated switchgear is a type of switchgear that uses a gas (such as sulfur hexafluoride SF6, nitrogen, etc.) as the insulating medium. It seals high-voltage components such as busbars, circuit breakers, disconnectors, and power cables within a housing filled with a low-pressure gas, utilizing the gas to insulate and protect various components of the power system. This type of equipment offers numerous advantages, including space saving, safety and reliability, and low maintenance costs.

[0003] When gas is applied to the switchgear, the surface of the cabinet is prone to deformation due to the pressure difference between the inside and outside, which will greatly reduce the service life of the cabinet during long-term use. In addition, the space utilization rate of the overall internal installation layout of the switchgear is low, which makes it easy to reduce the overlap surface of the copper pipes and cause the heat to be aggravated during operation. Utility Model Content

[0004] The purpose of this utility model is to provide a medium-voltage environmentally friendly gas switch cabinet to solve the problems of cabinet deformation under pressure difference, internal space utilization and copper pipe arrangement and installation in the prior art.

[0005] To achieve the above objectives, this utility model proposes:

[0006] A medium-voltage environmentally friendly gas switchgear includes an upper gas box and a lower gas box. The outer walls of the upper and lower gas boxes are provided with multiple outer reinforcing ribs, and the inner walls of the upper and lower gas boxes are provided with multiple inner reinforcing ribs. Multiple reinforcing beams are provided on the inner reinforcing ribs, and multiple cuts are made on the reinforcing beams. The inner reinforcing ribs are installed in the cuts.

[0007] Preferably, several sets of first inner cones are arranged laterally on the inner wall of the upper air box. The first inner cones are composed of first inner cones symmetrically distributed on the two inner walls of the upper air box. A conductive sheet is provided inside the first inner cone. Copper busbars are symmetrically arranged on both sides of the conductive sheet. A slot is formed between two copper busbars located on the same conductive sheet. A copper tube is provided in the slot. Different copper tubes have different bending lengths.

[0008] Preferably, the surface of the copper busbar is provided with several sets of through holes at equal intervals, and one end of the copper tube is installed on different through holes.

[0009] Preferably, the bottom of the upper air box is provided with a second inner cone group, which is composed of multiple longitudinally arranged second inner cones. A cylindrical groove is provided on the second inner cone, and a connecting piece is provided at the top of the cylindrical groove. The connecting piece is connected to the other end of the copper tube.

[0010] Preferably, the bottom of the upper air box is provided with a third inner cone group, which is composed of multiple longitudinally arranged third inner cones. A sleeve is provided on the third inner cone, and the central axis of the cylindrical groove and the sleeve are on the same straight line.

[0011] Preferably, a heat-conducting frame is provided on the top of the upper air box. The heat-conducting frame has a hollow structure, and several heat dissipation mechanisms are provided on the surface of the heat-conducting frame and the side of the lower air box.

[0012] Preferably, the heat dissipation mechanism consists of a plurality of heat dissipation teeth, the outer surface of which has a wavy texture.

[0013] Preferably, the outer reinforcing ribs and the inner reinforcing ribs are arranged at equal intervals.

[0014] The beneficial effects of this utility model are:

[0015] 1. Both the outer and inner reinforcing ribs are arranged at equal intervals, providing uniform support. This allows the gas box to evenly distribute stress when it is subjected to the internal SF6 gas pressure, reducing local stress concentration and ensuring the inflation strength of the upper and lower gas boxes. It also prevents deformation when the upper and lower gas boxes are filled with SF6 gas.

[0016] 2. The cut is used to fit onto the inner reinforcing rib, thereby fixing multiple reinforcing beams at equal intervals, further improving the inflation strength of the entire box; at the same time, the reinforcing beams can be used to divide the positions of the internal parts of the upper and lower air boxes, optimize the internal layout, enhance the convenience of maintenance, and facilitate the assembly and disassembly of the internal parts of the upper and lower air boxes by the staff.

[0017] 3. The connection method of the copper pipe reduces the overlapping area of ​​the copper pipe, making the electric field generated when the copper pipe is energized more uniform and stable, and avoiding the aggravation of heat generated by the copper pipe in an uneven electric field.

[0018] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a front view of the gas switchgear of this utility model;

[0020] Figure 2 This is an internal structural diagram of the gas switchgear of this utility model;

[0021] Figure 3 This is a perspective view of the upper and lower air boxes of this utility model;

[0022] Figure 4This is a diagram showing the internal structure of the upper and lower air boxes of this utility model.

[0023] Figure 5 This is a perspective view of the internal reinforcing ribs and reinforcing beams of this utility model;

[0024] Figure 6 The three-dimensional installation of the copper tube of this utility model Figure 1 ;

[0025] Figure 7 The three-dimensional installation of the copper tube of this utility model Figure 2 ;

[0026] Figure 8 This is a perspective view of the heat-conducting frame of this utility model;

[0027] Figure 9 For the present utility model Figure 8 Enlarged view of point A.

[0028] Reference numerals: 1. Upper air box; 2. Lower air box; 3. Outer reinforcing rib; 4. Inner reinforcing rib; 5. Reinforcing beam; 6. Cutout; 7. First inner cone; 8. Conductive sheet; 9. Copper busbar; 10. Copper pipe; 11. Through hole; 12. Second inner cone; 13. Cylindrical groove; 14. Connecting piece; 15. Third inner cone; 16. Sleeve; 17. Heat-conducting frame; 18. Heat dissipation mechanism; 19. Heat dissipation teeth; 20. Circuit breaker switch. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0031] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0032] Example 1:

[0033] Please refer to Figure 1 , Figure 3 and Figure 4 A medium-voltage environmentally friendly gas switchgear includes an upper gas box 1 and a lower gas box 2. Multiple horizontally arranged and equally spaced external reinforcing ribs 3 are provided on the outer walls of both the upper gas box 1 and the lower gas box 2. Multiple internal reinforcing ribs 4 are provided around the inner walls of both the upper gas box 1 and the lower gas box 2. The external reinforcing ribs 3 and the internal reinforcing ribs 4 are fixed to the gas switchgear by fasteners.

[0034] As is expected, the evenly spaced distribution of the outer reinforcing ribs 3 and the inner reinforcing ribs 4 provides uniform support, significantly enhancing the stability and rigidity of the entire structure. The design of the reinforcing ribs allows the gas box to evenly distribute stress when subjected to the internal SF6 gas pressure, reducing localized stress concentration. While ensuring the inflation strength of the upper gas box 1 and the lower gas box 2, it also prevents deformation when the upper gas box 1 and the lower gas box 2 are filled with SF6 gas.

[0035] Please refer to Figure 4 and Figure 5 Furthermore, multiple reinforcing beams 5 are provided on the inner reinforcing rib 4, and multiple slits 6 are provided on the reinforcing beams 5. The inner reinforcing rib 4 is installed in the slits 6, and the slits 6 are used to fit and match the inner reinforcing rib 4, thereby fixing the multiple reinforcing beams 5 at equal intervals.

[0036] As is expected, the design of the reinforcing beam 5 will further improve the inflation strength of the entire air box. At the same time, the reinforcing beam 5 can be used to divide the positions of the internal installation parts of the upper air box 1 and the lower air box 2, optimize the internal layout, enhance the convenience of maintenance, and facilitate the assembly and disassembly of the internal parts of the upper air box 1 and the lower air box 2 by the staff.

[0037] Please refer to Figure 2 , Figure 4 and Figure 6 Three sets of first inner cones 7 are arranged horizontally at equal intervals on the inner wall of the upper air box 1. The first inner cone 7 is composed of first inner cones 7 symmetrically distributed on the two inner walls of the upper air box 1. A conductive sheet 8 is provided inside the first inner cone 7. Copper busbars 9 are symmetrically arranged on both sides of the conductive sheet 8. The two ends of the copper busbars 9 are connected to the conductive sheets 8 of the two first inner cones 7 in the same first inner cone 7 set. A slot is formed between the two copper busbars 9 located on the same conductive sheet 8. A copper tube 10 is provided in the slot.

[0038] As expected, the symmetrically arranged copper busbars 9 have low contact resistance, which can effectively improve the high current carrying capacity.

[0039] Furthermore, there is a gap between the symmetrical copper busbars 9. This gap is a slot for installing copper tubes 10. Both ends of the copper tubes 10 are flat, and one end of the copper tube 10 is inserted into the gap between the copper busbars 9.

[0040] Please refer to Figure 6 and Figure 7 The surface of the copper busbar 9 is provided with three sets of through holes 11 at equal intervals. One end of the copper tube 10 is installed on different through holes 11. A corresponding positioning rod or copper column is inserted into the through hole 11 to stabilize the installation of the copper busbar 9 and the copper tube 10.

[0041] Specifically, the three copper tubes 10 inserted between the copper busbars 9 correspond to the three sets of through holes 11, that is, the three sets of copper tubes 10 are installed on the copper busbars 9 at equal intervals. The insertion of the copper tubes 10 not only enhances the connection strength between the copper busbars 9, but also improves the stability of the entire structure through its rigid support, reduces vibration and prevents loosening. The equidistant installation of the copper tubes 10 helps to reduce electromagnetic interference and electromagnetic noise, and can be used as part of electromagnetic shielding to confine the electromagnetic field to a specific area.

[0042] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 7 The bottom of the upper air box 1 is provided with a second inner cone 12 group, which is composed of multiple longitudinally arranged second inner cones 12. A cylindrical groove 13 is provided on the second inner cone 12, and a connecting piece 14 is provided at the top of the cylindrical groove 13. The connecting piece 14 is connected to the other end of the copper tube 10.

[0043] Specifically, please refer to Figure 7 The first inner cone 7 is divided into three groups: a, b, and c. The copper busbars 9 connected to the first inner cone 7 groups a, b, and c have through holes 11, namely a1, a2, a3, b1, b2, b3, and c1, c2, c3, respectively. The second inner cone 12 is divided into three groups: d, e, and f. One end of the copper tube 10 on the right is connected to the through hole 11 (a1), and the other end is connected to the connecting piece 14 of the second inner cone 12 (d). One end of the copper tube 10 in the middle is connected to the through hole 11 (b2), and the other end is connected to the connecting piece 14 of the second inner cone 12 (e). One end of the copper tube 10 on the left is connected to the through hole 11 (c3), and the other end is connected to the connecting piece 14 of the second inner cone 12 (f).

[0044] Specifically, please refer to Figure 7 The different copper tubes 10 have different bending lengths, with the bending length of the copper tube 10 on the right being greater than that of the middle copper tube 10, which in turn is greater than that of the copper tube 10 on the left. The copper tubes 10 are bent at different lengths to reduce the overlap between the three copper tubes 10, making the electric field generated when the copper tubes 10 are energized more uniform and stable, and preventing the increased heat generated in an uneven electric field.

[0045] Please refer to Figure 2 and Figure 4 The bottom of the upper air box 1 is also provided with a third inner cone 15 group, which consists of three or more longitudinally arranged third inner cones 15. A sleeve 16 is provided on the third inner cone 15, and the central axis of the cylindrical groove 13 and the sleeve 16 are on the same straight line.

[0046] As is expected, the sleeve 16 combined with the cylindrical groove 13 uses a circuit connection that allows for easy connection of the inserted copper pillar to stabilize the third inner cone 15 and the second inner cone 12, without requiring excessive other connection nodes to connect the circuit, thus reducing the generation of connection nodes and the impact of contact resistance.

[0047] Further references Figure 2 and Figure 4 The lower air box 2 is equipped with a circuit breaker switch 20. The upper part of the circuit breaker switch 20 is connected to the third inner cone 15 through a copper busbar and a conductive plate. The circuit of the upper air box 1 can be transferred to the circuit breaker switch 20 through the third inner cone 15, and the circuits of the upper air box 1 and the lower air box 2 can be connected.

[0048] Example 2:

[0049] Please refer to Figure 1 , Figure 3As shown in the figure, the top of the upper air box 1 has an opening, and a heat-conducting frame 17 is provided on the top of the upper air box 1. The heat-conducting frame 17 can completely cover the opening. The heat-conducting frame 17 has a hollow structure, and several heat dissipation mechanisms 18 are provided on the surface of the heat-conducting frame 17 and the side of the lower air box 2.

[0050] As is expected, the heat-conducting frame 17 is fixed to the upper air box 1 by fasteners. The hollow part can reserve some space to facilitate the installation layout of the internal busbar and copper pipe 10. At the same time, the heat generated inside the upper air box 1 is absorbed by the heat-conducting frame 17, which improves the heat dissipation efficiency.

[0051] Please refer to Figure 9 The heat dissipation mechanism 18 is composed of several heat dissipation teeth 19, and the outer surface of the heat dissipation teeth 19 has a wave-like structure.

[0052] As expected, the design of the heat dissipation fins 19 increases the heat dissipation area and further improves the heat dissipation efficiency.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A medium-voltage environmentally friendly gas switchgear, comprising an upper gas box and a lower gas box, characterized in that, Multiple outer reinforcing ribs are provided on the outer walls of both the upper and lower air boxes, and multiple inner reinforcing ribs are provided around the inner walls of both the upper and lower air boxes. Multiple reinforcing beams are provided on the inner reinforcing ribs, and multiple slits are opened on the reinforcing beams. The inner reinforcing ribs are installed in the slits.

2. The medium-voltage environmentally friendly gas switchgear according to claim 1, characterized in that, Several sets of first inner cones are arranged horizontally on the inner wall of the upper air box. Each first inner cone is composed of first inner cones symmetrically distributed on the two inner walls of the upper air box. A conductive sheet is provided inside the first inner cone. Copper busbars are symmetrically arranged on both sides of the conductive sheet. A slot is formed between two copper busbars located on the same conductive sheet. A copper tube is provided in the slot.

3. The medium-voltage environmentally friendly gas switchgear according to claim 2, characterized in that, The surface of the copper busbar is provided with several sets of through holes at equal intervals, and one end of the copper tube is installed on different through holes.

4. The medium-voltage environmentally friendly gas switchgear according to claim 2, characterized in that, The bottom of the upper air box is provided with a second inner cone group, which is composed of multiple longitudinally arranged second inner cones. A cylindrical groove is provided on the second inner cone, and a connecting piece is provided at the top of the cylindrical groove. The connecting piece is connected to the other end of the copper tube.

5. The medium-voltage environmentally friendly gas switchgear according to claim 4, characterized in that, The bottom of the upper air box is also provided with a third inner cone group, which is composed of multiple longitudinally arranged third inner cones. A sleeve is provided on the third inner cone, and the central axis of the cylindrical groove and the sleeve are on the same straight line.

6. The medium-voltage environmentally friendly gas switchgear according to any one of claims 1-5, characterized in that, A heat-conducting frame is provided on the top of the upper air box. The heat-conducting frame has a hollow structure, and several heat dissipation mechanisms are provided on the surface of the heat-conducting frame and the side of the lower air box.

7. The medium-voltage environmentally friendly gas switchgear according to claim 6, characterized in that, The heat dissipation mechanism consists of several heat dissipation teeth, and the outer surface of the heat dissipation teeth has a wavy texture.

8. The medium-voltage environmentally friendly gas switchgear according to claim 1, characterized in that, The outer and inner reinforcing ribs are arranged at equal intervals.

9. The medium-voltage environmentally friendly gas switchgear according to claim 2, characterized in that, Different copper pipes have different bending lengths.

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