Pressure relief protection structure of switch cabinet
By designing a rotating buffer structure with a protective cover and pressure relief plate on the switchgear, the high cost and safety risks of existing switchgear pressure relief devices are solved, achieving convenient replacement and safety reminders.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-10
AI Technical Summary
Existing switchgear pressure relief devices are expensive and difficult to replace after pressure relief, posing disassembly difficulties and safety risks, and cannot provide advance warning to staff.
A pressure relief protection structure was designed, which includes a protective cover, a pressure relief plate, and a pressure alarm. The rotation of the pressure relief plate buffers the gas, reducing damage to the top cover, and the alarm alerts the staff that pressure relief is imminent.
It reduces the replacement cost of pressure relief devices, extends their service life, enhances safety, and reduces harm to workers.
Smart Images
Figure CN224110765U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to switchgear protection technical field especially is switchgear pressure relief protection structure. BACKGROUND
[0002] Switchgear is a kind of electrical equipment, mainly used in the acceptance of electric power, distribution, control and protection. It assembles primary equipment (such as circuit breaker, disconnecting switch, etc.) and secondary equipment (such as relay, instrument, etc.) in the closed or open metal cabinet body according to certain design scheme, and constitutes complete distribution device. In power system, switchgear as the key distribution equipment, bears the important duty of guaranteeing the safety and stability of power supply, and the pressure relief device of high-voltage switchgear is an important component to ensure that this important duty can be realized.
[0003] Pressure relief device usually needs to use high-quality materials and complex manufacturing process, and the production cost is higher, and the existing switchgear pressure relief protection structure is usually opened by cover plate deformation to release pressure and exhaust gas, and the cover plate is scrapped after pressure relief, and can be put into operation again after replacement, which is high in cost;The existing switchgear pressure relief protection structure is not easy to replace the protective cover after pressure relief, and is difficult to disassemble, which is time-consuming and laborious;The existing switchgear pressure relief protection structure only sets the direction of pressure relief port, and there is still a risk of collapsing parts under the impact of huge pressure, and the existing protection structure cannot warn the staff in advance, and the safety risk is high. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of switchgear pressure relief protection structure, buffer the gas that is rushed out by pressure relief plate in the moment of pressure relief, reduce the destructive of top cover when pressure relief, effectively improve the use frequency of pressure relief protection device, and the safety of staff is protected by the reminder of alarm.
[0005] To achieve the above object, the utility model provides the following scheme:
[0006] A kind of switchgear pressure relief protection structure, including switchgear and protective cover, wherein the protective cover is fixed at the top of switchgear, the top of switchgear is provided with pressure relief hole, the pressure relief hole is arrayed on the top surface of switchgear, the protective cover includes bottom frame, cover body and top cover, the left and right ends of bottom frame are threadedly connected at the top of switchgear, bottom frame top is welded with cover body, the top of cover body is hingedly connected with top cover, the rear end of top cover is bolted to the rear end of cover body top, pressure relief plate is arranged in the inside of cover body, and pressure relief plate is connected to the inside of cover body by pivot.
[0007] Further, the switchgear includes a base, a cabinet body, and a cabinet door, the cabinet body is welded to the top of the base, the cabinet door is hingedly connected to the front of the cabinet body, the pressure relief hole is arranged on the top surface of the cabinet body, and the gas is discharged through the pressure relief hole.
[0008] Further, the left and right ends of the bottom frame are provided with fixing screws, the protective cover is disassembled and replaced through the fixing screws, the inside of the cover body is provided with a pressure relief plate, a fixing plate and a rear hole, the pressure relief plate is arranged in the inside of the cover body, the fixing plate is provided with two pieces and is welded on the front side and the rear side of the inside of the cover body respectively, when the pressure relief plate is in a horizontal state, the pressure relief plate and the fixing plate are a plane, the pressure relief plate is rotated for pressure relief after being punched by gas, and the rear hole is arranged at the rear end of the cover body.
[0009] Further, the top cover is provided with a nylon bolt and a pressure alarm, the nylon bolt is welded at the rear end of the top cover, the top cover is fixed on the top of the cover body through the nylon bolt, the pressure alarm is arranged on the top cover, a sensor is arranged at the bottom end of the pressure alarm and passes through the top cover and is arranged in the inside of the protective cover.
[0010] To sum up, the beneficial technical effects of the utility model are:
[0011] 1. The pressure relief plate is selected, the rotation characteristics of the pressure relief plate when relieving pressure are used to buffer the gas and reduce the damage of the gas impact on the top cover, and the service life of the pressure relief protective cover is prolonged.
[0012] 2. The fixing screw is adopted, the protective cover is fixed on the switch cabinet through the fixing screw, the protective cover can be replaced by disassembling the fixing screw, and the safety of the switch cabinet is improved.
[0013] 3. The pressure alarm is applied, the pressure inside the protective cover is monitored before pressure relief, the alarm is started, the staff is prompted that the pressure relief is imminent, the safety during pressure relief is improved, and the possibility that the gas impact harms the staff during pressure relief is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a whole structure schematic view of the utility model;
[0015] Figure 2 It is a switch cabinet structure schematic view of the utility model;
[0016] Figure 3 It is a protective cover structure schematic view of the utility model;
[0017] Figure 4 It is a pressure relief plate opening structure schematic view of the utility model.
[0018] 1. switch cabinet; 2, protective cover; 11, base; 12, cabinet body; 13, cabinet door; 21, bottom frame; 22, cover body; 23, top cover; 121, pressure relief hole; 211, fixing screw; 221, pressure relief plate; 222, fixing plate; 223, rear hole; 231, nylon bolt; 232, pressure alarm. DETAILED DESCRIPTION
[0019] The utility model discloses a switch cabinet pressure relief protection structure further in detail in combination with the drawings.
[0020] The utility model discloses a switch cabinet pressure relief protection structure, including switch cabinet 1 and protection cover 2, protection cover 2 is fixed in switch cabinet 1 top, switch cabinet 1 is relieved and exhausts through protection cover 2, and switch cabinet 1 top is provided with pressure relief hole 121, and pressure relief hole 121 array is on switch cabinet 1 top surface, and switch cabinet 1 top surface is rubber material, and pressure relief hole 121 is the multiple pinhole shape of intensive, through the elasticity of rubber material, pressure relief hole 121 is extruded into airtight state by the elasticity of material under normal circumstances, and when pressure relief, pressure and gas will open pressure relief hole 121 and gas discharge, form multiple buffer ports for pressure relief gas, improve the service life of pressure relief protection cover 2, and switch cabinet 1 includes base 11, cabinet body 12 and cabinet door 13, and cabinet body 12 is welded in base 11 top, and base 11 forms the height difference of cabinet body 12 with ground, prevents the bottom area water from entering the inside of cabinet body 12, and cabinet door 13 is hingedly connected in the front of cabinet body 12, and pressure relief hole 121 is set up in cabinet body 12 top surface, and gas is discharged through pressure relief hole 121 when pressure relief, and specifically see Figure 1 、 Figure 2 .
[0021] The protective cover 2 comprises a bottom frame 21, a cover body 22 and a top cover 23. The left and right ends of the bottom frame 21 are threadedly connected to the top of the switch cabinet 1. The protective cover 2 is installed on the top of the switch cabinet 1 through the bottom frame 21. The protective cover 2 covers the top of the switch cabinet 1 entirely. When pressure relief, the gas enters the protective cover 2 through the pressure relief hole 121. The top of the bottom frame 21 is welded with the cover body 22. The top of the cover body 22 is hingedly connected with the top cover 23 at the front end. The rear end of the top cover 23 is boltedly connected to the top of the cover body 22. The inside of the cover body 22 is provided with a pressure relief plate 221. The pressure relief plate 221 is pivotally connected to the inside of the cover body 22. The left and right ends of the bottom frame 21 are provided with fixing screws 211. The protective cover 2 is disassembled and replaced through the fixing screws 211. The protective cover 2 is fixed on the switch cabinet 1 through the fixing screws 211. The fixing screws 211 are disassembled, and the protective cover 2 can be replaced. The damaged protective cover 2 can be replaced conveniently. The safety of the switch cabinet 1 is enhanced. The inside of the cover body 22 is provided with the pressure relief plate 221, a fixing plate 222 and a rear hole 223. The pressure relief plate 221 is arranged in the inside of the cover body 22. The fixing plate 222 is provided with two pieces, which are welded to the front side and the rear side of the inside of the cover body 22 respectively. When the pressure relief plate 221 is in a horizontal state, the pressure relief plate 221 and the fixing plate 222 are a plane. The pressure relief plate 221 is provided with a strip-shaped pressure relief hole 121. When the pressure relief intensity is low, the gas passes through the pressure relief hole 121 and the rear hole 223 and is discharged, which does not affect the top cover 23. When the pressure relief intensity is high, the pressure relief plate 221 is opened by the gas and is rotated when pressure relief, so that the gas is buffered and the damage of the gas to the top cover 23 is reduced, the service life of the pressure relief protective cover 2 is improved. The rear hole 223 is arranged at the rear end of the cover body 22. The rear hole 223 assists the gas to be discharged when pressure relief. The top cover 23 is provided with a nylon bolt 231 and a pressure alarm 232. The nylon bolt 231 is welded to the rear end of the top cover 23. The top cover 23 is fixed to the top of the cover body 22 through the nylon bolt 231. When the electric arc is generated in the inside of the switch cabinet 1, the pressure breaks the nylon bolt 231 and opens the top cover 23. After the top cover 23 is opened, the inside of the switch cabinet 1 continuously releases the pressure outwardly. Therefore, the DH010 intelligent pressure alarm 232 is adopted. The pressure alarm 232 is arranged on the top cover 23. The bottom end of the pressure alarm 232 is provided with a sensor. The sensor passes through the top cover 23 and is arranged in the inside of the protective cover 2. The pressure alarm 232 monitors the pressure in the inside of the protective cover 2 in real time. When the pressure relief hole 121 starts to relieve pressure, the pressure in the inside of the protective cover 2 is abnormal. The alarm is started to alarm and to prompt the staff that the pressure relief is imminent. When the pressure relief intensity is low, even if the gas does not break the top cover 23, the staff can be reminded to start pressure relief. The staff can intervene in the state of continuous pressure relief in time. See Figure 3 .
[0022] Embodiment
[0023] Operation flow
[0024] 1. Install the protective cover 2 on the top of the switch cabinet 1 through the fixing screws 211.
[0025] 2. The pressure relief plate 221 inside the cover 22 is adjusted to be a flat surface with the fixed plate 222, and then the top cover 23 is sealed on the top of the cover 22 through nylon bolts 231;
[0026] 3. When the switch cabinet 1 is internally relieved, the pressure relief hole 121 is opened by the gas, the gas passes through the pressure relief hole 121 to the inside of the protective cover 2, and the pressure alarm 232 starts to alarm, and the staff intervenes in the continuous pressure relief state after the pressure relief is completed;
[0027] 4. When the protective cover 2 needs to be replaced, the fixed screw 211 is unscrewed, the damaged protective cover 2 is replaced, and the new protective cover 2 is installed.
[0028] The embodiments of the specific embodiment are the preferred embodiments of the utility model, which are not limited to the protection scope of the utility model, so that: any equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. A switchgear pressure relief protection structure comprising a switchgear (1) and a protection cover (2), characterized in that: The protective cover (2) is fixed on the top of the switch cabinet (1), the top of the switch cabinet (1) is provided with a pressure relief hole (121), the pressure relief hole (121) is arranged on the top surface of the switch cabinet (1), the protective cover (2) comprises a bottom frame (21), a cover body (22) and a top cover (23), the left and right ends of the bottom frame (21) are threadedly connected on the top of the switch cabinet (1), the top of the bottom frame (21) is welded with the cover body (22), the top of the cover body (22) is hingedly connected with the top cover (23), the rear end of the top cover (23) is bolted on the top rear end of the cover body (22), the inside of the cover body (22) is provided with a pressure relief plate (221), and the pressure relief plate (221) is pivotally connected to the inside of the cover body (22).
2. The switchgear pressure relief guard structure of claim 1, wherein: The switch cabinet (1) comprises a base (11), a cabinet body (12) and a cabinet door (13), the cabinet body (12) is welded on the top of the base (11), the cabinet door (13) is hingedly connected to the front of the cabinet body (12), and the pressure relief hole (121) is arranged on the top surface of the cabinet body (12), and the gas is discharged through the pressure relief hole (121).
3. The switchgear pressure relief guard structure of claim 1, wherein: The left and right ends of the bottom frame (21) are provided with fixing screws (211), the protective cover (2) is disassembled and replaced through the fixing screws (211), the inside of the cover body (22) is provided with a pressure relief plate (221), a fixing plate (222) and a rear hole (223), the pressure relief plate (221) is arranged in the inside of the cover body (22), the fixing plate (222) is provided with two, which are respectively welded on the front side and the rear side of the inside of the cover body (22), when the pressure relief plate (221) is in a horizontal state, the pressure relief plate (221) and the fixing plate (222) form a plane, the pressure relief plate (221) is rotated for pressure relief after being opened by the gas, the rear hole (223) is arranged at the rear end of the cover body (22), and the rear hole (223) assists the gas discharge.
4. The switchgear pressure relief guard structure of claim 1, wherein: The top cover (23) is provided with a nylon bolt (231) and a pressure alarm (232), the nylon bolt (231) is welded at the rear end of the top cover (23), the top cover (23) is fixed on the top of the cover body (22) through the nylon bolt (231), the pressure alarm (232) is arranged on the top cover (23), the bottom end of the pressure alarm (232) is provided with a sensor, and the sensor passes through the top cover (23) and is arranged in the inside of the protective cover (2).