Insulated compression-resistant power cabinet

Abstract

The application discloses an insulating compression-resistant power cabinet, and relates to the field of electrical equipment, which comprises a middle partition cabinet body, an inner built-in cabinet body arranged in the middle partition cabinet body, an air tank arranged at the lower end of the inner built-in cabinet body, an electrical tank arranged at the top of the air tank, an analog-to-digital conversion part arranged at the upper end of the electrical tank, an induction direct pushing part arranged at the upper end of the electrical tank, and an air inlet expansion part arranged on the electrical tank, wherein the air inlet expansion part can effectively absorb the gas overflowing from the outer surface of the electrical tank, and the air tank, the epoxy resin isolation cover, the guide clamping frame and the air guide groove work cooperatively; when a small amount of protective gas overflows from the electrical tank, an insulating protective layer can be formed on the outer surface of the air outlet pipe, and the design can not only collect and treat the leaked gas in time, but also can use the collected gas to build a protective barrier.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, specifically to an insulated and pressure-resistant power cabinet. Background Technology

[0002] Electric gas switchgear is an important piece of equipment used in power systems, primarily for distributing and controlling electrical energy. In practical applications, electric gas switchgear commonly faces several problems, such as limited pressure resistance and cooling capacity, which can easily lead to leakage, overheating, and burnout. This not only affects the normal operation of the equipment but also reduces its lifespan, increases maintenance costs, and creates safety hazards.

[0003] The electrical equipment disclosed in CN105305283 is an insulated and voltage-resistant power cabinet. By setting up an insulated and voltage-resistant transformer, the service life of the power cabinet is improved and leakage is avoided. By using relays, ring network units and solid-state switches, the power cabinet can autonomously sense malfunctions and implement power-off protection. An exhaust chamber is set up to reduce the temperature of the insulated step-down transformer. An exhaust bushing and ground wire extending to the ground are accommodated in the bottom box.

[0004] However, in most electrical gas-insulated switchgear, an insulating protective gas, typically sulfur hexafluoride, is introduced to enhance insulation performance. This gas is toxic, and leaks can pollute the outside air. Therefore, the aforementioned techniques lack an effective mechanism for collecting and utilizing gases leaking from critical components like electrical boxes to improve insulation. When a gas leak occurs, it's impossible to use the leaked gas to build a protective barrier, effectively reducing the safety risks caused by the leak and making it difficult to ensure the stable and safe operation of the electrical switchgear under gas leakage conditions.

[0005] Therefore, in order to address the shortcomings of the existing system, an insulated and pressure-resistant power cabinet was proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an insulated and pressure-resistant power cabinet to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an insulated and pressure-resistant power cabinet, comprising: a central partition cabinet, wherein an inner cabinet is provided inside the central partition cabinet, an air box is provided at the lower end of the inner cabinet, and an electrical box is provided at the top of the air box;

[0008] An analog-to-digital converter is provided at the upper end of the electrical box. This converter can detect changes in the air pressure inside the electrical box. An inductive push unit is provided at the upper end of the exterior of the electrical box. The analog-to-digital converter can send a start signal to the inductive push unit, causing the inductive push unit to extend its length.

[0009] The upper end of the induction straight push part is provided with an air inlet expansion part which can move up and down with the induction straight push part, and when the air inlet expansion part is sleeved outside the electrical box, it can absorb the overflowing gas, the air inlet expansion part can be composed of an expansion piece, a protection piece and an air inlet piece, the connecting end of the induction straight push part and the middle of the top inside of the protection piece are connected with each other, the inside of the protection piece is provided with the expansion piece, the inside of the expansion piece is provided with the air inlet piece, the air inlet piece and the protection piece are connected with each other, when the connecting end of the induction straight push part moves and approaches the outside of the electrical box, the air inlet piece and the protection piece can be sleeved outside the electrical box.

[0010] The two sides of the air inlet expansion part are symmetrically provided with turning parts, the two sides of the electrical box are provided with auxiliary suction parts, the turning parts are attracted to each other with the auxiliary suction parts when the air inlet expansion part moves down, and the turning parts change direction driven by the auxiliary suction parts.

[0011] The outside of the partition cabinet is provided with a gas flow dilution part, which can absorb the gas led out of the partition cabinet, and the gas flow dilution part can mix and lead out the inert gas and the leaked gas.

[0012] Further, the air inlet piece can absorb the gas overflowing outside the electrical box, the air inlet piece can lead the absorbed gas into the inside of the expansion piece, so that the expansion piece expands between the protection piece and the air inlet piece.

[0013] Further, the single-face cross-sectional area of the protection piece and the air inlet piece is equal to the cross-sectional area of the electrical box.

[0014] Further, the turning part is composed of a rotating piece and an adapter piece, the adapter piece is fixedly connected between the outside of the protection piece, the rotating piece is rotationally connected with the adapter piece, and the one-way length of the rotating piece is equal to the distance between the partition cabinet and the electrical box.

[0015] Further, the auxiliary suction part is composed of a passive telescopic piece and a fitting piece, the fitting piece is fixedly arranged on the two sides of the electrical box, the upper end of the inside of the fitting piece is provided with the passive telescopic piece, the geometric center of the passive telescopic piece is on the same straight line as the axis of the rotating piece, and the top end of the passive telescopic piece can actively attract the corresponding end of the rotating piece.

[0016] Further, the gas flow dilution part can be composed of a gas guide piece, a gas gathering piece and a processing piece, the gas guide piece is arranged at the middle of the top of the partition cabinet, the outside of the partition cabinet is sleeved with the gas gathering piece, and the back of the gas gathering piece is provided with the processing piece.

[0017] Further, the gas guide piece leads the gas overflowing from the partition cabinet into the inside of the gas gathering piece, and the top of the gas guide piece does not contact the upper end of the inside of the gas gathering piece.

[0018] Further, the polygas member is filled with inert gas, which can be set as nitrogen.

[0019] Compared with the prior art, the application has the following advantages:

[0020] 1. The design of the air inlet expansion part in the application can effectively absorb the gas overflowing from the outside of the electrical box. The epoxy resin isolation cover, air bag, guide clamp frame, and air guide groove cooperate to work. When a small amount of protective gas overflows from the electrical box, an insulating protective layer can be formed on the outside of the air outlet pipe. This design not only collects and processes the leaked gas in time, but also uses the collected gas to build a protective barrier to enhance the insulation performance of the electrical box, reduce the safety risk caused by gas leakage, and improve the safety and stability of the operation of the power cabinet.

[0021] 2. The design of the turning part and the attached suction part greatly improves the stability of the installation structure of the electrical box when the gas leaks. The V-shaped support plate, turning groove block, iron block, telescopic cylinder, and magnetic suction block cooperate with each other. When the epoxy resin isolation cover is lowered, the V-shaped support plate is rotated and supported between the epoxy resin isolation cover and the built-in cabinet body through magnetic attraction. This design can effectively prevent the electrical box from shaking or displacing due to pressure changes caused by gas leakage, ensuring the relative position stability of the electrical equipment inside the power cabinet and avoiding failures caused by unstable structure.

[0022] 3. The setting of the gas flow dilution part realizes effective treatment of the gas overflowing from the middle partition cabinet. The air guide part, polygas part, and treatment part cooperate with each other. The gas is guided into the external cabinet filled with nitrogen through the air suction pipe, built-in air pump, and valve pipe. Nitrogen not only neutralizes the toxicity of the protective gas, but also cools down to reduce the temperature of the electrical equipment inside the middle partition cabinet. Finally, the mixed gas is sent to the filter tower body for treatment, which not only reduces harmful gas emissions, but also reduces the operating temperature of the equipment, prolongs the service life of the equipment inside the power cabinet, and improves the reliability of the overall operation of the power cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the insulating and pressure-resistant power cabinet of the application.

[0024] Figure 2 It is a schematic diagram of the detailed structure inside the insulating and pressure-resistant power cabinet of the application.

[0025] Figure 3 It is a schematic diagram of the side structure of the insulating and pressure-resistant power cabinet of the application.

[0026] Figure 4 It is a schematic diagram of the top view structure of the insulating and pressure-resistant power cabinet of the application.

[0027] Figure 5This is a schematic diagram of the electrical box and related component assembly structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the combined structure of the intake expansion section and steering section of the present invention;

[0029] Figure 7 This is a schematic diagram of the combined structure of the intake expansion section and the steering section of the present invention from another perspective.

[0030] In the diagram: 1. External cabinet; 2. Internal cabinet; 3. Middle partition cabinet; 4. Air filter tower body; 5. Valve pipe; 6. Internal air pump; 7. Epoxy resin isolation cover; 8. Electrical box; 9. Air box; 10. Airbag; 11. Guide frame; 12. Suction pipe; 13. Rotary block; 14. V-shaped support plate; 15. Iron block; 16. Magnetic block; 17. Telescopic cylinder; 18. Base; 19. Electric telescopic rod; 20. Air outlet pipe; 21. Transmission pipe; 22. Air pressure sensor; 23. Air guide groove; 24. Air delivery pipe. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1-7 As shown, an insulated and pressure-resistant power cabinet includes: a central cabinet 3, an inner cabinet 2 is provided inside the central cabinet 3, an air box 9 is provided at the lower end of the inner cabinet 2, and an electrical box 8 is provided at the top of the air box 9.

[0033] An analog-to-digital converter is provided at the upper end of the electrical box 8. The analog-to-digital converter can detect changes in the air pressure inside the electrical box 8. An induction push unit is provided at the upper end of the exterior of the electrical box 8. The analog-to-digital converter can send a start signal to the induction push unit, causing the induction push unit to extend its length.

[0034] The analog-to-digital converter can be configured as a pressure sensor 22, which can detect the pressure intensity of sulfur hexafluoride gas inside the electrical box 8. When sulfur hexafluoride gas leaks inside the electrical box 8 and the pressure inside the electrical box 8 begins to decrease, the pressure sensor 22 sends a start signal to the control center of the sensing push unit. The sensing push unit can be configured as an electric telescopic rod 19, thereby enabling the sensing push unit to start working.

[0035] The upper end of the induction straight pushing part is provided with an air inlet expansion part which can move up and down with the induction straight pushing part, and when the air inlet expansion part is sleeved outside the electrical box 8, it can absorb the overflow gas;

[0036] The air inlet expansion part is provided with a turning part on both sides, and the electrical box 8 is provided with an auxiliary suction part on both sides. When the turning part moves down with the air inlet expansion part, it is attracted to the auxiliary suction part, and the turning part is driven to change direction by the auxiliary suction part.

[0037] The middle partition cabinet body 3 is provided with a gas flow dilution part outside, which can absorb the gas led out of the middle partition cabinet body 3, and the gas flow dilution part can mix the inert gas with the leaked gas and lead it out.

[0038] Embodiment one: please refer to Figures 1 to 7 The air inlet expansion part can be composed of an expansion part, a protection part and an air inlet part. The connecting end of the induction straight pushing part is connected to the middle of the top inside of the protection part. The inside of the protection part is provided with the expansion part, and the inside of the expansion part is provided with the air inlet part. The air inlet part and the protection part are connected to each other. When the connecting end of the induction straight pushing part moves and approaches the outside of the electrical box 8, the air inlet part and the protection part can be sleeved outside the electrical box 8.

[0039] The protection part can be an epoxy resin isolation cover 7, the expansion part can be an air bag 10, and the air inlet part can be composed of a guide clamp frame 11 and a gas guide groove 23. The inside of the guide clamp frame 11 is provided with a plurality of gas guide grooves 23. The outside of the guide clamp frame 11 is provided with an air bag 10. The outside of the air bag 10 is provided with an epoxy resin isolation cover 7. The air bag 10 is placed in the gap between the air bag 10 and the guide clamp frame 11. The epoxy resin isolation cover 7 is driven by the electric telescopic rod 19 to move down and cover the outside of the electrical box 8. At the same time, the gas guide groove 23 is close to the outside of the electrical box 8. When the protection gas overflows outside the electrical box 8, the gas guide groove 23 inside the guide clamp frame 11 absorbs the gas.

[0040] The air inlet part can absorb the gas overflowing outside the electrical box 8, and the air inlet part can lead the absorbed gas into the inside of the expansion part, so that the expansion part expands between the protection part and the air inlet part.

[0041] Wherein, since the air guide groove 23 is connected to the outside of the air bag 10 at the back of the inner side of the guide frame 11, the air guide groove 23 can guide the protective gas into the air bag 10, at this time, the air bag 10 is filled with gas and expands, and because the bottom of the front of the air bag 10 is provided with the air outlet pipe 20, when the air bag 10 and the guide frame 11 are lowered to the outside of the electrical box 8 along with the epoxy resin isolation cover 7, and the outlet port of the air outlet pipe 20 is flush with the lower end of the outside of the electrical box 8 at this time, because the air outlet pipe 20 is provided with a pressure valve at the connection with the air bag 10, when the amount of gas in the air bag 10 is small, that is, when a small amount of protective gas is overflowed from the electrical box 8, the pressure valve is opened, at this time, a small amount of protective gas forms an insulating protective layer around the outside of the electrical box 8.

[0042] The single surface sectional area of the protective member and the air inlet member is greater than the sectional area of the electrical box 8.

[0043] Wherein, the outer area of the guide frame 11 and the epoxy resin isolation cover 7 is slightly larger than the outer area of the electrical box 8, so that the protective gas guided by the air outlet pipe 20 can form a protective layer outside the electrical box 8.

[0044] Embodiment two: please refer to Figures 1 to 7 The turning part is composed of a rotating member and an adapter, the adapter is fixedly connected between the outside of the protective member, the rotating member is rotatably connected with the adapter, and the one-way length of the rotating member is equal to the distance between the partitioned cabinet body 3 and the electrical box 8.

[0045] Wherein, the rotating member can be a V-shaped support plate 14, the adapter can be composed of a rotating groove block 13 and a ferrous block 15, the two sides of the outside of the epoxy resin isolation cover 7 are provided with the rotating groove block 13, the inside of the rotating groove block 13 is transversely provided with a rotating rod, the outside of the rotating rod is provided with the V-shaped support plate 14, the bottom of the V-shaped support plate 14 is provided with the ferrous block 15, the V-shaped support plate 14 can rotate outside the rotating rod inside the rotating groove block 13, and the V-shaped support plate 14 as a whole presents a V-shaped structure, when the V-shaped support plate 14 is rotated downward to 90°, the part of the outside of the V-shaped support plate 14 except the ferrous block 15 can be transversely placed on the two sides of the electrical box 8, and the structural length of the part of the outside of the V-shaped support plate 14 except the ferrous block 15 is equal to the distance from the outside of the electrical box 8 to the inside of the built-in cabinet 2.

[0046] The auxiliary suction part is composed of a passive telescopic member and a matching member, the matching member is fixedly arranged on the two sides of the electrical box 8, the passive telescopic member is arranged at the upper end of the inside of the matching member, the geometric center of the passive telescopic member is on the same straight line as the rotating member, and the top end of the passive telescopic member can actively suck the corresponding end of the rotating member.

[0047] Wherein, the passive telescopic part can be composed of the telescopic cylinder 17 and the magnetic block 16, the fitting part can be provided as the base 18, the both sides of the gas tank 9 are provided with the base 18, and the installation axis of the base 18 is on the same straight line with the installation axis of the rotating groove block 13, the base 18 is in L-shaped structure, the top end of the base 18 is provided with the telescopic cylinder 17, the top end of the telescopic cylinder 17 is provided with the magnetic block 16, the magnetic block 16 can move up and down along with the telescopic movement of the telescopic cylinder 17, when the epoxy resin isolation cover 7 is lowered to the outside of the electrical tank 8, the iron block 15 at the bottom of the V-shaped support plate 14 is attracted by the magnetic block 16 at the top of the telescopic cylinder 17, at this time the telescopic cylinder 17 is extended by the upward force of the magnetic block 16, and the iron block 15 is driven to rotate the V-shaped support plate 14 by the attraction of the magnetic block 16, when the V-shaped support plate 14 is rotated to form a vertical angle with the epoxy resin isolation cover 7, the iron block 15 and the magnetic block 16 are attracted to each other, at this time the part of the V-shaped support plate 14 outside the iron block 15 is supported between the epoxy resin isolation cover 7 and the built-in cabinet 2, so as to further maintain the stability of the installation structure when the protective gas leaks from the electrical tank 8.

[0048] Example three: please refer to Figures 1 to 7 , the gas flow dilution part can be composed of a gas guide part, a gas gathering part and a processing part, the gas guide part is arranged at the middle of the top of the partition cabinet 3, the partition cabinet 3 is externally sleeved with the gas gathering part, and the back of the gas gathering part is provided with the processing part.

[0049] Wherein, the gas guide part can be composed of the air suction pipe 12, the built-in air pump 6 and the valve pipe 5, the gas gathering part can be provided as the external cabinet 1, and the processing part can be composed of the transmission pipe 21 and the filter tower body 4. One side of the top of the air bag 10 is provided with the air suction pipe 12, one side of the air suction pipe 12 is connected with the built-in air pump 6, the top of the built-in air pump 6 is provided with the gas conveying pipe 24, the upper end of the built-in air pump 6 is externally provided with the valve pipe 5, the valve pipe 5 is vertically and penetratingly connected between the top of the partition cabinet 3, the external cabinet 1 is arranged at the outside of the partition cabinet 3, the rear end of the external cabinet 1 is connected with the transmission pipe 21, and one end of the transmission pipe 21 is connected with the filter tower body 4.

[0050] The gas guide part guides the overflow gas of the partition cabinet 3 into the internal part of the gas gathering part, and the top of the gas guide part is not in contact with the upper end of the internal part of the gas gathering part.

[0051] Wherein, because the connection part of the air suction pipe 12 and the air bag 10 is provided with a pressure valve, when the gas quality in the air bag 10 is too large and the inflation degree of the air bag 10 is too large, the pressure valve between the air suction pipe 12 and the air bag 10 is opened, and the built-in air pump 6 is started, the built-in air pump 6 starts to suck a large amount of gas from the air suction pipe 12 into the gas conveying pipe 24, and the gas conveying pipe 24 guides the large amount of gas into the internal part of the valve pipe 5, but only a one-way valve is arranged in the internal part of the valve pipe 5, so the valve pipe 5 can guide the protective gas from the gas conveying pipe 24 out for a long time.

[0052] The polygas element is filled with inert gas, which can be nitrogen.

[0053] The inside of the external cabinet 1 is filled with nitrogen, which can not only neutralize the toxicity of the protective gas, but also has a certain cooling effect. When the valve pipe 5 leads out a large amount of protective gas, the nitrogen in the inside of the external cabinet 1 can reduce the concentration of the protective gas, and the nitrogen continuously exists outside the partition cabinet 3, so that the outside of the partition cabinet 3 also forms a cooling layer, so as to reduce the temperature of the multiple electrical equipment in the inside of the partition cabinet 3. Finally, a pressure valve with a large preset value is arranged between the transmission pipe 21 and the external cabinet 1. When the amount of mixed gas in the inside of the external cabinet 1 reaches a large value, the pressure valve is opened, and the transmission pipe 21 sends the mixed gas into the inside of the gas filtering tower body 4 for treatment.

[0054] Embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teachings. Embodiments are chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application, various embodiments having been selected and described for the purposes of illustration and description.

Claims

1. An insulated and voltage-resistant power switch, comprising: The partition cabinet (3) is characterized in that an internal cabinet (2) is provided inside the partition cabinet (3), an air box (9) is provided at the lower end of the internal cabinet (2), and an electrical box (8) is provided at the top of the air box (9). An analog-to-digital converter is provided at the upper end of the electrical box (8). The analog-to-digital converter detects the change in the air pressure value inside the electrical box (8). An induction push part is provided at the upper end of the exterior of the electrical box (8). The analog-to-digital converter sends a start signal to the induction push part, causing the induction push part to extend its length. The upper end of the induction push part is provided with an air intake expansion part. The air intake expansion part moves up and down with the induction push part. When the air intake expansion part is sleeved on the outside of the electrical box (8), it absorbs the overflowing gas. The air intake expansion part is composed of an expansion member, a protective member and an air intake member. The connecting end of the induction push part is connected to the middle of the top of the inner side of the protective member. An expansion member is provided on the inner side of the protective member. An air intake member is provided on the inner side of the expansion member. The air intake member and the protective member are connected to each other. When the connecting end of the induction push part moves and approaches the outside of the electrical box (8), the air intake member and the protective member are sleeved on the outside of the electrical box (8). The protective component is set as an epoxy resin isolation cover (7), the expansion component is set as an airbag (10), and the air intake component is composed of a guide frame (11) and an air guide groove (23). Multiple air guide grooves (23) are provided on the inner side of the guide frame (11), and an airbag (10) is provided on the outer side of the guide frame (11). An epoxy resin isolation cover (7) is provided on the outer side of the airbag (10). The airbag (10) is placed in the gap between the airbag (10) and the guide frame (11). The electric telescopic rod (19) drives the epoxy resin isolation cover (7) to move down and cover the outside of the electrical box (8). At the same time, the air guide groove (23) is close to the outside of the electrical box (8). When protective gas overflows from the outside of the electrical box (8), the air guide groove (23) on the inner side of the guide frame (11) absorbs the gas. The outer area of ​​the guide frame (11) and the epoxy resin isolation cover (7) is slightly larger than the outer area of ​​the electrical box (8). The intake expansion section is symmetrically provided with a steering section on both sides, and the electrical box (8) is provided with an auxiliary suction section on both sides. When the steering section moves down with the intake expansion section, it attracts the auxiliary suction section and changes direction driven by the auxiliary suction section. The partition cabinet (3) is provided with a gas dilution section outside. The gas dilution section absorbs the gas discharged from the partition cabinet (3) and discharges the inert gas and the leaked gas together.

2. The insulating and pressure-resistant power switch according to claim 1, characterized in that, The air intake absorbs the gas overflowing from the exterior of the electrical box (8), and the air intake introduces the absorbed gas into the interior of the expansion member, so that the expansion member expands between the protective member and the air intake member.

3. The insulating and pressure-resistant power switch according to claim 1, characterized in that, The cross-sectional area of ​​the protective component and the air intake component is equal to the cross-sectional area of ​​the electrical box (8).

4. The insulating and pressure-resistant power switch according to claim 1, characterized in that, The steering part consists of a rotating part and an adapter. The adapter is fixedly connected to the outside of the protective part. The rotating part and the adapter are rotatably connected. The unidirectional length of the rotating part is equal to the distance between the partition cabinet (3) and the electrical box (8).

5. An insulated and pressure-resistant power switch according to claim 1, characterized in that, The attached attraction part is composed of a passive telescopic component and a mounting component. The mounting components are fixedly installed on both sides of the electrical box (8). A passive telescopic component is installed on the upper end of the inner side of the mounting component. The axis of the passive telescopic component and the geometric center of the rotating component are on the same straight line. The top end of the passive telescopic component actively attracts the corresponding end of the rotating component.

6. The insulating and pressure-resistant power switch according to claim 1, characterized in that, The gas dilution section consists of a gas guide, a gas gatherer, and a processing component. The gas guide is located in the middle of the top of the partition cabinet (3). The partition cabinet (3) is fitted with a gas gatherer on the outside. The back of the gas gatherer is provided with a processing component.

7. An insulated and pressure-resistant power switch according to claim 6, characterized in that, The air guide component directs the overflowing gas from the partition cabinet (3) into the interior of the gas gathering component, and the top of the air guide component does not contact the upper interior of the gas gathering component.

8. An insulated and pressure-resistant power switch according to claim 7, characterized in that, The gas-gathering component is filled with an inert gas, which is nitrogen.

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