Insulated switch cabinet
By integrating a concealed inflation and depressurization valve and a pressure sensor into the switch cabinet, the problems of high processing costs and non-real-time pressure monitoring caused by separate inflation and depressurization ports in existing technologies are solved, thus realizing automated pressure management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ZHONGXIN GENERAL ELECTRIC ENERGY CO LTD
- Filing Date
- 2025-04-01
- Publication Date
- 2026-04-21
AI Technical Summary
The separate setting of the gas filling and depressurization ports in the existing switchgear increases the processing cost and makes it impossible to monitor the gas pressure in real time, resulting in the need to check the gas pressure regularly.
The design incorporates a concealed inflation and pressure relief valve, integrating an air inlet, inflation port, and pressure relief port. Combined with a pressure sensor, it monitors air pressure in real time and automatically replenishes air when the pressure drops.
This technology enables real-time monitoring of air pressure and timely air replenishment without increasing processing costs, thereby improving the level of automated equipment management.
Smart Images
Figure CN224153803U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power distribution equipment technology, and in particular to an insulated switch cabinet. Background Technology
[0002] Gas-insulated switchgear (or gas-filled switchgear) is an important piece of equipment in power systems and is widely used in various settings, including power plants, substations, industrial and mining enterprises, residential communities, and railways.
[0003] In existing switchgear, the internal gas pressure needs to be checked regularly during use, and gas needs to be added when the gas is insufficient; at the same time, the pressure relief port and the gas filling port are set separately, which increases the processing cost. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an insulated switch cabinet. By setting a hidden inflation and depressurization valve, the cabinet can be inflated and depressurized at the same time. It can also monitor the pressure of the insulating gas inside the cabinet in real time, and can start the inflation equipment to replenish the gas inside the cabinet in time when the pressure drops.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] An insulated switch cabinet includes a rectangular cabinet body and cabinet panels arranged on the six sides of the cabinet body. The cabinet body is provided with a vertical first partition and a horizontal second partition. The first partition, the second partition, the cabinet panel on the top of the cabinet body, and the cabinet panels on both sides of the cabinet body form independent air-filled chambers.
[0007] The inflation chamber is equipped with an inflation and pressure relief valve, which has an air inlet, an inflation port, and a pressure relief port. The air inlet passes through the first partition and communicates with the interior of the cabinet. The inflation port is connected to an inflation pipe, and the pressure relief port is connected to the outside through the pressure relief pipe. The air inlet is connected to the inflation port or the pressure relief port through a connecting piece.
[0008] The cabinet is also equipped with a pressure sensor, which is used to detect the pressure of the insulating gas inside the cabinet.
[0009] Furthermore, the inflation and pressure relief valve includes a valve body, and the valve body is provided with a first air passage, a second air passage and a third air passage. The first air passage, the second air passage and the third air passage form a T-shaped gas passage. The first air passage is connected to the air inlet, the second air passage is connected to the inflation port, and the third air passage is connected to the pressure relief port.
[0010] The intersection of the first, second, and third air passages forms a spherical switching cavity. The connecting element is a hemispherical valve core disposed within the switching cavity. The valve core is connected to a rotating handle outside the valve body via a valve stem.
[0011] Furthermore, the second and third air passages are each connected to threaded pipes. Furthermore, the four sides of the first partition are folded outwards to form connecting plates, which are fixedly connected to the cabinet panel and the second partition, respectively.
[0012] Furthermore, a door is provided on the outside of the inflation chamber, one side of which is rotatably connected to the cabinet via a hinge, and a door lock is provided on the opposite side of the door.
[0013] Furthermore, hanging rings are provided at the four corners of the top of the cabinet.
[0014] Furthermore, the connecting plate is connected to the cabinet panel by bolts, and the connecting plate is welded to the second partition.
[0015] The beneficial effects of this utility model are:
[0016] This invention can both inflate and depressurize the cabinet by setting a hidden inflation and depressurization valve. At the same time, it can monitor the pressure of the insulating gas inside the cabinet in real time, and can promptly start the inflation equipment to replenish the air inside the cabinet when the pressure drops. Attached Figure Description
[0017] Figure 1 This is a perspective view of the concealed portion of the insulated switchgear in an embodiment of this utility model.
[0018] Figure 2 This is a front view of the concealed section of the cabinet panel in an insulated switchgear.
[0019] Figure 3 This is a perspective view of the insulated switchgear in the embodiment of this utility model;
[0020] Figure 4 This is a top view of the inflation and pressure relief valve;
[0021] Figure 5 for Figure 4 Sectional view along line AA;
[0022] Figure 6 for Figure 4 BB-direction section view
[0023] In the diagram, 1. Cabinet body; 2. Cabinet panel; 3. First partition; 4. Second partition; 5. Inflation and pressure relief valve; 6. Air inlet; 7. Inflation port; 8. Pressure relief port; 9. Valve body; 10. First air passage; 11. Second air passage; 12. Third air passage; 13. Switching chamber; 14. Valve core; 15. Valve stem; 16. Lifting ring; 17. Rotating handle; 18. Connecting plate; 19. Chamber door. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] See Figures 1-6 This utility model provides a technical solution:
[0026] Example:
[0027] like Figures 1-6 As shown, an insulated switchgear includes a rectangular cabinet 1 and cabinet panels 2 arranged on the six sides of the cabinet 1. Lifting rings 15 are respectively provided at the four corners of the top of the cabinet 1. The lifting rings 15 are used to transport and install the switchgear in conjunction with lifting equipment.
[0028] The cabinet 1 contains a vertical first partition 3 and a horizontal second partition 4. The first partition 3, the second partition 4, the top panel 2 of the cabinet 1, and the side panels 2 of the cabinet 1 form independent inflation chambers. A chamber door 18 is located on the outside of each inflation chamber. One side of the chamber door 18 is rotatably connected to the cabinet 1 via a hinge, and the opposite side of the chamber door 18 is equipped with a lock. The lock is existing technology, and its specific selection will not be elaborated here.
[0029] The inflation chamber is equipped with an inflation and pressure relief valve 5, which has an air inlet 6, an inflation port 7, and a pressure relief port 8. The air inlet 6 passes through the first partition 3 and communicates with the interior of the cabinet 1. The inflation port 7 is connected to an inflation pipe, which can be, but is not limited to, a threaded connection with the inflation port 7. The inflation pipe is also connected to an inflation device, which is a commonly used device in the field. Its model and gas type are selected according to the actual working conditions. The specific structure and working principle are not described here.
[0030] The pressure relief port 8 is connected to the outside via a pressure relief pipe, and the pressure relief pipe and the pressure relief port 8 can be connected by a threaded connection, but are not limited to the connection between the pressure relief pipe and the pressure relief port 8; the air inlet 6 is connected to the air inlet 7 or the pressure relief port 8 via a connecting piece.
[0031] The cabinet 1 is also equipped with a pressure sensor, which is used to detect the pressure of the insulating gas inside the cabinet 1.
[0032] like Figures 4-6As shown, the inflation and pressure relief valve 5 includes a valve body 9. The valve body 9 has a first air passage 9, a second air passage 10, and a third air passage 11 inside. The first air passage 9, the second air passage 10, and the third air passage 11 form a T-shaped gas passage. The first air passage 9 is connected to the air inlet 6, the second air passage 10 is connected to the inflation port 7, and the third air passage 11 is connected to the pressure relief port 8.
[0033] The intersection of the first air passage 9, the second air passage 10 and the third air passage 11 forms a spherical switching cavity 12. The connecting element is a hemispherical valve core 13 disposed in the switching cavity 12. The valve core 13 is connected to the rotating handle 16 outside the valve body 9 through the valve stem 14.
[0034] The four sides of the first partition 3 are folded outward (towards the cavity door 18) to form a connecting plate 17. The connecting plate 17 is connected to the cabinet plate 2 by bolts, and the connecting plate 17 is welded to the second partition 4.
[0035] Among them, the barometric pressure sensor is existing technology, and its specific model selection and working principle will not be elaborated here.
[0036] Working principle: The openable and closable design of the cavity door 18 allows the inflation pressure relief valve 5 to be hidden inside the inflation cavity, thereby protecting the inflation pressure relief valve 5 when it is not depressurized or inflated.
[0037] When protective gas (SF6 is the insulating gas (medium) in this embodiment) needs to be added, rotate the handle 16. Rotating the handle 16 drives the valve core 13 to rotate via the valve stem 14. When the valve core 13 rotates to seal the pressure relief port 8 and connects the inflation port 7 with the air inlet 6, the inflation device can inflate the cabinet 1. After inflation is complete, rotate the valve core 13 to seal the air inlet 6.
[0038] Simultaneously, the pressure of the insulating gas inside the cabinet 1 is monitored by a pressure sensor, and the information is sent to remote devices such as the operator's mobile phone and computer. When the pressure inside the cabinet 1 is detected to be lower than the pressure when the inflation just ended, the operator manually controls the inflation device to replenish the gas inside the cabinet 1.
[0039] When pressure relief is required, rotate valve core 13 until air inlet 6 and pressure relief port 8 are connected. The gas in cabinet 1 is discharged to the outside of cabinet 1 through air inlet 6 and pressure relief port 8 to achieve pressure relief.
[0040] This invention can both inflate and depressurize the cabinet by setting a hidden inflation and depressurization valve. At the same time, it can monitor the pressure of the insulating gas inside the cabinet in real time, and can promptly start the inflation equipment to replenish the air inside the cabinet when the pressure drops.
[0041] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. An insulated switchgear cabinet comprising a rectangular cabinet body and cabinet panels provided on six sides of the cabinet body, characterized in that: The cabinet is equipped with a vertical first partition and a horizontal second partition. The first partition, the second partition, the top panel of the cabinet, and the side panels of the cabinet form independent air chambers. The inflation chamber is equipped with an inflation and pressure relief valve, which has an air inlet, an inflation port, and a pressure relief port. The air inlet passes through the first partition and communicates with the interior of the cabinet. The inflation port is connected to an inflation pipe, and the pressure relief port is connected to the outside through the pressure relief pipe. The air inlet is connected to the inflation port or the pressure relief port through a connecting piece. The cabinet is also equipped with a pressure sensor, which is used to detect the pressure of the insulating gas inside the cabinet.
2. The insulated switchgear according to claim 1, characterized in that: The inflation and pressure relief valve includes a valve body, and the valve body is provided with a first air passage, a second air passage and a third air passage. The first air passage, the second air passage and the third air passage form a T-shaped gas passage. The first air passage is connected to the air inlet, the second air passage is connected to the inflation port, and the third air passage is connected to the pressure relief port. The intersection of the first, second, and third air passages forms a spherical switching cavity. The connecting element is a hemispherical valve core disposed within the switching cavity. The valve core is connected to a rotating handle outside the valve body via a valve stem.
3. The insulated switchgear according to claim 2, characterized in that: The second and third air passages are respectively connected to threaded pipes.
4. The insulated switchgear according to claim 1, characterized in that: The four sides of the first partition are folded outward to form a connecting plate, which is fixedly connected to the cabinet panel and the second partition.
5. The insulated switchgear according to claim 1, characterized in that: The inflation chamber is provided with a door on the outside. One side of the door is rotatably connected to the cabinet via a hinge, and the other side of the door is provided with a lock.
6. The insulated switchgear according to claim 1, characterized in that: Hanging rings are provided at the four corners of the top of the cabinet.
7. The insulated switchgear according to claim 4, characterized in that: The connecting plate is connected to the cabinet panel by bolts, and the connecting plate is welded to the second partition.