Gas tank structure of high-altitude gas-insulated switchgear
By designing a high-altitude inflatable cabinet gas box structure in high altitude areas, using technical means such as metal sealed box, inflatable mechanism and sealing ring, the problems of air box due to pressure difference and heat dissipation are solved, and deformation and leakage are prevented, and the problem of improvement is improved. The reliability and efficiency of the equipment.
Patent Information
- Application Number
- CN202420834438.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-22
AI Technical Summary
Switching equipment in high altitude areas increases the internal and external pressure difference due to thin air and lowered air pressure, resulting in deformation and cracking of the air box body, and difficulty in dissipating heat, affecting the reliability of mechanical operation and insulation performance.
A high-altitude inflatable cabinet air box structure is designed, using a metal sealed box, a high-strength air box, an inflatable mechanism, a sealing ring and a heat sink. Deformation and leakage are prevented through pressurization and sealing design, and the heat dissipation efficiency is improved.
It effectively prevents deformation and leakage of the air box, improves sealing and heat dissipation efficiency, reduces temperature appreciation, improves the operating level and operation and maintenance quality of power distribution equipment, and reduces economic losses caused by equipment failures.
Smart Images
Figure CN222282622U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of inflatable cabinets, and particularly relates to an air box structure of a high-altitude inflatable cabinet. Background Art
[0002] High-altitude areas have relatively harsh natural climatic conditions, which will have a great impact on the performance of switch products. State Grid Corporation has a large number of substations located in the above-mentioned high-altitude areas. In the past, the 40.5kV switchgear in these substations all used plateau-type modified designs of conventional air-insulated products. This method is often inefficient and still cannot solve insulation problems well. In recent years, State Grid Corporation has increasingly tended to choose gas-insulated high-quality products that are not or less affected by the environment in the selection of such products in high-altitude areas. However, with the increase in altitude, the heat dissipation of switchgear products is difficult and the temperature rise increases. But at the same time, the altitude increases and the ambient temperature decreases, which can partially compensate for the increase in product temperature rise caused by the increase in altitude. The thin air and reduced air pressure in high-altitude areas will increase the internal and external pressure difference of the switchgear with a cavity. The increase in the internal and external pressure difference will cause the shape of the switchgear gas box to deform and crack, and the insulating gas inside the gas box will leak out. At the same time, the deformation of the gas box will also affect the reliability of mechanical operation.
[0003] Therefore, in view of the shortcomings of the above-mentioned scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the utility model is created to provide a high-altitude inflatable cabinet air box structure to solve the problem. Utility Model Content
[0004] The utility model proposes a high-altitude gas cabinet gas box structure, which solves the temperature rise problem of the high-altitude gas cabinet in practical application in the prior art, and the increase of the internal and external pressure difference will cause the gas box shape of the switch equipment to deform and crack.
[0005] The technical solution of the utility model is achieved as follows: a high-altitude inflatable cabinet air box structure, comprising: a metal sealed box body, a high-strength air box is arranged inside the metal sealed box body, an extended bus is installed on the upper end of the high-strength air box, a connecting column is installed inside the high-strength air box, the upper part of the connecting column is connected to an inflation mechanism, a branch bus is arranged at the lower part of the inflation mechanism, a dynamic sealing ring is installed at the upper part of the branch bus, a cable is arranged on the other side of the dynamic sealing ring, a wiring bushing is connected to the lower part of the cable, a current transformer is arranged at the lower end of the wiring bushing, a pressure gauge is installed on the outside of the high-strength air box, a circuit breaker box is arranged inside the metal sealed box body, a static sealing ring is arranged on the outside of the circuit breaker box, and a heat sink is arranged at the lower part of the metal sealed box body.
[0006] As a preferred embodiment, an observation window is provided on the upper side of the metal sealed box, and the observation window is sealed and connected to the metal sealed box, so that the internal conditions of the metal sealed box can be easily viewed through the observation window.
[0007] As a preferred embodiment, an explosion-proof valve is installed at the lower part of the high-strength gas box, and a control switch is provided on the upper side of the explosion-proof valve. The explosion-proof valve can improve the safety of the high-strength gas box.
[0008] As a preferred implementation, the cable is tightly connected to the dynamic sealing ring, which can ensure the sealing between the cable and the dynamic sealing ring.
[0009] As a preferred implementation, a wiring bushing is provided on the upper portion of the branch busbar, so as to facilitate installation of the wiring bushing on the upper side of the branch busbar.
[0010] As a preferred embodiment, the inflation mechanism is connected to the inflation pump via an inflation delivery pipeline and a one-way valve, and the high-strength air box can be pressurized through the inflation mechanism.
[0011] As a preferred implementation, the end of the connecting column is connected to the high-strength air box via a fixing plate, which can improve the stability of the connecting column.
[0012] As a preferred implementation, the lower side of the extended busbar is connected to the metal sealing box via a static sealing ring, and the static sealing ring can be used to expand the sealing performance of the busbar.
[0013] As a preferred implementation, the dynamic sealing ring adopts a lip-shaped sealing ring, and the static sealing ring adopts a flat sealing ring, which can ensure the sealing performance of the dynamic sealing ring and the static sealing ring.
[0014] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by improving the strength of the high-strength gas box, deformation and cracking of the box body can be prevented; by checking and verifying whether the gas-insulated switchgear has cracking, deformation and gas leakage through pressure test, the charging mechanism can be fixed by means of connecting columns, the high-strength gas box can be pressurized by means of the charging mechanism, the sealing performance of the metal sealed box body can be improved by means of sealing rings and static sealing rings, the heat dissipation efficiency of the charging cabinet can be improved by means of heat sinks, and at the same time, by appropriately reducing the main circuit resistance, reducing the heat generation, reducing the temperature rise value at the joint, and improving the operating level, operation and maintenance quality and efficiency of the distribution equipment, the quality of the charging cabinets in the distribution network can be improved, and the economic losses caused by equipment failure problems can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0017] Figure 2 It is a right view structural schematic diagram of the utility model;
[0018] In the figure, 1-metal sealing box; 2-circuit breaker box; 3-extension busbar; 4-connecting column; 5-high-strength gas box; 6-observation window; 7-branch busbar; 8-wiring bushing; 9-current transformer; 10-pressure gauge; 11-dynamic sealing ring; 12-static sealing ring; 13-inflating mechanism; 14-cable line; 15-heat sink. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] like Figure 1-2As shown, a high-altitude inflatable cabinet gas box structure comprises: a metal sealed box body 1, a high-strength gas box 5 is arranged inside the metal sealed box body 1, and the high-strength gas box 5 can be used to prevent the box body from deformation and cracking, and an extended busbar 3 is installed on the upper end of the high-strength gas box 5, and the extended busbar 3 can be used to connect with the high-strength gas box 5, and a connecting column 4 is installed inside the high-strength gas box 5, and the upper part of the connecting column 4 is connected to an inflation mechanism 13, and the inflation mechanism 13 can be fixed by the connecting column 4, and the inside of the high-strength gas box 5 is inflated and pressurized by the inflation mechanism 13, and a branch busbar 7 is arranged at the lower part of the inflation mechanism 13, and a dynamic sealing ring 11 is installed at the upper part of the branch busbar 7, which can be divided into a plurality of gas boxes, a plurality of gas boxes, and a plurality of gas boxes. The branch busbar 7 is installed inside the dynamic sealing ring 11, and a cable 14 is provided on the other side of the dynamic sealing ring 11. The lower part of the cable 14 is connected with a wiring bushing 8, and the wiring bushing 8 can be used to protect the cable 14. A current transformer 9 is provided at the lower end of the wiring bushing 8. A pressure gauge 10 is installed on the outside of the high-strength gas box 5, and the pressure gauge 10 can be used to detect the internal pressure of the high-strength gas box 5 in real time. A circuit breaker box 2 is provided inside the metal sealed box 1, and a static sealing ring 12 is provided on the outside of the circuit breaker box 2. The static sealing ring 12 can improve the sealing of the metal sealed box 1. A heat sink 15 is provided at the lower part of the metal sealed box 1, and the heat sink 15 can improve the heat dissipation efficiency of the inflatable cabinet.
[0021] Furthermore, an observation window 6 is provided on the upper side of the metal sealed box body 1 , and the observation window 6 is sealedly connected to the metal sealed box body 1 , so that the internal conditions of the metal sealed box body 1 can be easily viewed through the observation window 6 .
[0022] Furthermore, an explosion-proof valve is installed at the lower part of the high-strength gas box 5, and a control switch is provided on the upper side of the explosion-proof valve. The explosion-proof valve can improve the safety of the high-strength gas box 5.
[0023] Furthermore, the cable 14 is tightly connected to the dynamic sealing ring 11 , which can ensure the sealing between the cable 14 and the dynamic sealing ring 11 .
[0024] Furthermore, a wiring bushing 8 is provided on the upper portion of the branch busbar 7 , so as to facilitate installation of the wiring bushing 8 on the upper side of the branch busbar 7 .
[0025] Furthermore, the inflation mechanism 13 is connected to the inflation pump via an inflation delivery pipeline and a one-way valve, and the inflation mechanism 13 can be used to pressurize the interior of the high-strength air box 5 .
[0026] Furthermore, the end of the connecting column 4 is connected to the high-strength air box 5 via a fixing plate, which can improve the stability of the connecting column 4.
[0027] Furthermore, the lower side of the extended busbar 3 is connected to the metal sealing box 1 via a static sealing ring 12 , and the static sealing ring 12 can be used to extend the sealing performance of the busbar 3 .
[0028] Furthermore, the dynamic sealing ring 11 adopts a lip-shaped sealing ring, and the static sealing ring 12 adopts a flat sealing ring, which can ensure the sealing performance of the dynamic sealing ring 11 and the static sealing ring 12.
[0029] The principle of the utility model is that the thin air and reduced air pressure in high-altitude areas will increase the pressure difference between the inside and outside of the switchgear with a cavity. By improving the strength of the high-strength gas box 5, the deformation and cracking of the box body can be prevented. The extended busbar 3 can be used to connect with the high-strength gas box 5. The pressure test is used to check and verify whether the gas-insulated switchgear has cracking, deformation and gas leakage. The connecting column 4 can be used to fix the inflation mechanism 13. The inflation mechanism 13 can be used to pressurize the inside of the high-strength gas box 5. The wiring sleeve 8 can be used to protect the cable 14. The pressure gauge 10 can be used to detect the internal pressure of the high-strength gas box 5 in real time. The sealing ring 11 and the static sealing ring 12 can improve the sealing of the metal sealed box body 1. The heat sink 15 can improve the heat dissipation efficiency of the inflation cabinet. At the same time, by appropriately reducing the main circuit resistance, reducing the heat generation, and reducing the temperature rise value at the overlap, the air chamber pressure of the 40.5kV gas-insulated switchgear high-strength gas box 5 product at different altitudes is corrected to meet the requirements of the high sea wave environment.
[0030] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high altitude inflatable cabinet air box structure, comprising: The metal sealed box (1) is characterized in that a high-strength gas box (5) is provided inside the metal sealed box (1), an extended busbar (3) is installed at the upper end of the high-strength gas box (5), a connecting column (4) is installed inside the high-strength gas box (5), an inflation mechanism (13) is connected to the upper part of the connecting column (4), a branch busbar (7) is provided at the lower part of the inflation mechanism (13), a dynamic seal ring (11) is installed at the upper part of the branch busbar (7), a cable (14) is provided on the other side of the dynamic seal ring (11), a wiring bushing (8) is connected to the lower part of the cable (14), a current transformer (9) is provided at the lower end of the wiring bushing (8), a pressure gauge (10) is installed on the outer side of the high-strength gas box (5), a circuit breaker box (2) is provided inside the metal sealed box (1), a static seal ring (12) is provided on the outer side of the circuit breaker box (2), and a heat sink (15) is provided at the lower part of the metal sealed box (1).
2. A high altitude inflatable cabinet air box structure according to claim 1, characterized in that: An observation window (6) is provided on the upper side of the metal sealed box body (1), and the observation window (6) is sealedly connected to the metal sealed box body (1).
3. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: An explosion-proof valve is installed at the lower part of the high-strength gas box (5), and a control switch is provided on the upper side of the explosion-proof valve.
4. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: The cable (14) is tightly connected to the dynamic sealing ring (11).
5. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: A wiring sleeve (8) is provided on the upper portion of the branch busbar (7).
6. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: The inflation mechanism (13) is connected to the inflation pump via an inflation delivery pipeline and a one-way valve.
7. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: The end of the connecting column (4) is connected to the high-strength air box (5) via a fixing plate.
8. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: The lower side of the extended busbar (3) is connected to the metal sealing box (1) via a static sealing ring (12).
9. The high altitude inflatable cabinet air box structure according to claim 1, characterized in that: The dynamic sealing ring (11) is a lip-type sealing ring, and the static sealing ring (12) is a plane sealing ring.