A stable type electrical gas-filled cabinet with directional pressure relief

Abstract

The utility model relates to electrical equipment technical field especially, a kind of stable electrical air-accumulator with directional pressure relief, solve the air-accumulator in prior art cannot take into account mild pressure dynamic voltage stabilization and high-pressure emergency directional pressure relief, and low air pressure protection device can only deal with gas leakage but cannot handle pressure abnormal rise problem.A kind of stable electrical air-accumulator with directional pressure relief, including switch board, the two sides of the switch board are respectively installed with a group of pressure relief pipe, and the side of two groups of pressure relief pipe close to switch board interior is respectively installed with a group of voltage stabilizing structure;The side of the back of the switch board is installed with multiple groups of cover plate, and the periphery of multiple groups of cover plate is respectively installed with a group of clamping structure, and cover plate is installed together with switch board by multiple groups of clamping structure.The utility model automatically adjusts mild elevated pressure by voltage stabilizing structure, when pressure is too large, cover plate buckle breaks and forms emergency pressure relief port, realize pressure grading protection, improve equipment safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a stable electrical gas-filled switchgear with directional pressure relief. Background Technology

[0002] In power system operation, gas-insulated switchgear, as a critical electrical device, plays a vital role in power distribution, control, and protection. Its interior is typically filled with insulating gas to ensure the stable operation of electrical components. With the continuous growth of electricity demand and the diversification of gas-insulated switchgear applications, internal pressure control and safety protection have become core requirements for ensuring reliable equipment operation. During long-term operation, the heat generated by the internal electrical components causes the switchgear pressure to gradually increase. If this pressure cannot be released in time, it may lead to switchgear deformation, damage to the sealing structure, or even leakage of the internal insulating gas. This not only affects the equipment's insulation performance but may also cause safety accidents. Conversely, when the switchgear experiences a sudden pressure surge due to a fault, conventional pressure relief structures are insufficient to quickly release the high pressure, easily causing switchgear rupture, damage to electrical components, and other serious consequences, posing a significant threat to the stable operation of the power system and personnel safety.

[0003] For example, a Chinese patent, CN210516597U, discloses a low-pressure electrical interlocking device for a gas-insulated switchgear. In use, this patent monitors gas leakage inside the switchgear using an SF6 gas density relay. When gas leakage causes a pressure drop, the SF6 gas density relay triggers an intermediate relay, opening the normally closed contact of the intermediate relay in the control circuit, cutting off power to the remote control switch. Simultaneously, it closes the alarm point of the intermediate relay in the signal circuit to trigger an alarm, thus preventing the equipment from continuing to operate under low pressure and causing an accident. However, this patent only solves the electrical interlocking and alarm problem of the gas-insulated switchgear under low pressure. It prevents insulation failure risks caused by low pressure by cutting off power and issuing alarm signals, but it does not address the pressure increase caused by heat accumulation during operation. It cannot achieve stable regulation of slight pressure increases during normal operation, nor can it quickly and directionally release pressure when it becomes excessively high. Therefore, it is difficult to cope with structural damage and safety hazards caused by abnormal pressure increases inside the switchgear.

[0004] Therefore, we propose a stable electrical gas-filled switchgear with directional pressure relief to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a stable electrical gas-filled switchgear with directional pressure relief, which solves the problem that the existing gas-filled switchgear cannot simultaneously handle dynamic pressure stabilization under mild pressure and emergency directional pressure relief under high pressure, and that the low pressure protection device can only deal with gas leakage but cannot handle abnormal pressure rise.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A stable gas-insulated electrical switch with directional pressure relief includes a distribution cabinet and further includes:

[0008] A set of pressure relief pipes is installed on each side of the distribution cabinet, and a set of voltage stabilizing structure is installed on the side of each set of pressure relief pipes closest to the inside of the distribution cabinet.

[0009] Multiple sets of cover plates are installed on one side of the back of the power distribution cabinet, and a set of locking structures are installed around each of the multiple sets of cover plates. The cover plates are installed together with the power distribution cabinet through the multiple sets of locking structures.

[0010] Preferably, the card machine structure includes a pin and a socket, the back of the power distribution cabinet is provided with multiple sets of openings, and a set of pins is fixedly installed around the four sides of the power distribution cabinet near the openings.

[0011] Each of the multiple openings of the distribution cabinet is fitted with a set of cover plates, and each of the multiple sets of cover plates is fixedly installed with a set of pins on the side away from the distribution cabinet.

[0012] Multiple sets of pins are connected to the socket, and the pins are made of nylon.

[0013] Preferably, a set of through holes are opened around the perimeter of the pressure relief pipe near the inside of the distribution cabinet, and the middle of the pressure relief pipe is hollowed out and connected to the through holes.

[0014] Preferably, the voltage stabilizing structure includes a base, a top cover, and a sleeve, with the base fixedly installed on the side of the pressure relief pipe closest to the inside of the distribution cabinet;

[0015] The base has an inner cover fitted with a top cover, and a sleeve is fixedly installed at the bottom inside the base.

[0016] The middle part of the sleeve is hollowed out.

[0017] Preferably, a sliding rod is fitted inside the sleeve, and the top end of the sliding rod extends out of one side of the sleeve and is fixedly installed with a spring;

[0018] The other end of the spring is fixedly installed to the top of the inside of the cover;

[0019] The bottom end of the slide bar is hinged with a barrier cover, which is fitted together with the hollowed-out part in the middle of the pressure relief pipe.

[0020] Preferably, the voltage stabilizing structure also includes a sliding plate and a slider, with a set of sliding plates fixedly installed on each side of the top cover, and the two sets of sliding plates are symmetrical.

[0021] The sleeve has an opening in the middle, and the slide bar has an inclined groove at the opening of the sleeve.

[0022] A slider is slidably installed in the inclined groove of the slide bar, and both sides of the slider are slidably installed together with the slide plate.

[0023] This utility model has at least the following beneficial effects:

[0024] Precise pressure protection classification and high safety: It can achieve graded protection for different pressure conditions. When the pressure rises slightly, the pressure stabilizing structure can automatically adjust and release pressure in a directional manner to maintain the pressure stability of the cabinet. When the pressure is too high in an instant, the cover plate buckle will break actively to form an emergency pressure relief port to release pressure quickly, avoiding damage to the cabinet and components. The unbroken buckle can limit the cover plate to prevent the loss of parts.

[0025] This utility model also has the following beneficial effects:

[0026] The structural design is reliable and highly practical: the snap-fit ​​structure uses nylon pins to cooperate with the socket, which not only ensures that the cover plate is firmly installed, but also has insulation and anti-corrosion properties, extending the life of components and avoiding safety hazards; the cooperation between the sliding plate and the slider in the pressure stabilizing structure can prevent the sliding rod from deviating, ensure precise adjustment of the pressure relief channel, and ensure stable and reliable pressure regulation, which is suitable for the long-term operation requirements of the gas-filled cabinet. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the three-dimensional rear view structure of this utility model;

[0029] Figure 2 This is a cross-sectional view of the power distribution cabinet of this utility model;

[0030] Figure 3 This is a schematic diagram of the overall structure of the cover plate of this utility model;

[0031] Figure 4 This is a schematic diagram of the card base structure of this utility model;

[0032] Figure 5 This is a cross-sectional view of the voltage stabilizing structure of this utility model;

[0033] Figure 6 This is a cross-sectional view of the voltage stabilizing structure of this utility model.

[0034] In the diagram: 1. Distribution cabinet; 2. Pressure relief pipe; 3. Cover plate; 4. Voltage stabilizing structure; 5. Snap-fit ​​structure; 6. Plug; 7. Socket; 8. Base; 9. Top cover; 10. Sleeve; 11. Spring; 12. Slide rod; 13. Barrier cover; 14. Slide plate; 15. Slider. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] Reference Figure 1-6 A stable electrical gas-insulated switchgear with directional pressure relief includes a distribution cabinet 1, and further includes:

[0037] A set of pressure relief pipes 2 are installed on both sides of the power distribution cabinet 1, and a set of voltage stabilizing structure 4 is installed on the side of the two sets of pressure relief pipes 2 closest to the inside of the power distribution cabinet 1.

[0038] Multiple sets of cover plates 3 are installed on one side of the back of the power distribution cabinet 1, and a set of locking structure 5 is installed around each of the multiple sets of cover plates 3. The cover plates 3 are installed together with the power distribution cabinet 1 through the multiple sets of locking structure 5.

[0039] Furthermore, the snap-fit ​​structure 5 includes a pin 6 and a socket 7. The back of the power distribution cabinet 1 is provided with multiple sets of openings, and a set of pins 6 are fixedly installed around the openings of the power distribution cabinet 1.

[0040] Each of the multiple openings of the power distribution cabinet 1 is fitted with a set of cover plates 3, and each of the multiple sets of cover plates 3 is fixedly installed with a set of pins 6 on the side away from the power distribution cabinet 1.

[0041] Multiple sets of pins 6 are inserted into sockets 7, and the pins 6 are made of nylon. The snap-fit ​​structure 5, through the insertion and cooperation of the pins 6 and sockets 7, enables convenient installation and removal of the cover plate 3 and the distribution cabinet 1. Pins 6 are fixedly installed around the opening on the back of the distribution cabinet 1 and on the side of the cover plate 3 facing away from the distribution cabinet 1. The stable insertion of multiple sets of pins 6 and sockets 7 effectively ensures the secure installation of the cover plate 3 during normal use of the distribution cabinet 1, preventing the cover plate 3 from loosening and exposing and damaging the internal electrical components of the distribution cabinet 1. At the same time, the pins 6 are made of nylon, which has good insulation and corrosion resistance. On the one hand, it prevents the pins 6 from conducting electricity and causing safety hazards; on the other hand, it extends the service life of the pins 6 and reduces the installation failure of the cover plate 3 caused by the damage of the pins 6, further improving the overall safety and stability of the distribution cabinet 1.

[0042] Furthermore, the pressure relief pipe 2 has a set of through holes around its perimeter near the interior of the distribution cabinet 1. The middle section of the pressure relief pipe 2 is hollowed out and connected to these through holes. This structural design provides a reasonable and effective channel for releasing pressure inside the distribution cabinet 1. When a certain amount of pressure is generated inside the distribution cabinet 1 due to the operation of electrical components, the pressure can enter the hollowed-out area in the middle of the pressure relief pipe 2 through the through holes, thereby achieving directional pressure relief and preventing disorderly accumulation of pressure inside the distribution cabinet 1. This structure, where the through holes connect to the hollowed-out area in the middle, ensures the smoothness of the pressure release process, preventing pressure from failing to be released in time due to blockage or obstruction of the pressure relief channel. This protects the electrical components inside the distribution cabinet 1 from pressure shocks and maintains the normal operation of the distribution cabinet 1.

[0043] Furthermore, the voltage stabilizing structure 4 includes a base 8, a top cover 9, and a sleeve 10. The pressure relief pipe 2 is fixedly installed with the base 8 on the side closest to the inside of the distribution cabinet 1.

[0044] The base 8 is fitted with a top cover 9, and a sleeve 10 is fixedly installed at the bottom inside the base 8.

[0045] The sleeve 10 is hollowed out in the middle. The base 8, the top cover 9, and the sleeve 10 in the pressure stabilizing structure 4 cooperate with each other, laying a solid structural foundation for subsequent pressure stabilization and regulation. The pressure relief pipe 2 is fixedly installed on the side closest to the inside of the distribution cabinet 1. The top cover 9 is sleeved inside the base 8, ensuring the stability of the connection between the pressure stabilizing structure 4 and the pressure relief pipe 2, and preventing the pressure stabilizing structure 4 from shifting or falling off under pressure. The sleeve 10, which is fixedly installed at the bottom inside the base 8, has a hollowed-out design that provides space for the installation and sliding of the slide rod 12. This allows the slide rod 12 to move flexibly inside the sleeve 10, thus creating conditions for subsequent adjustment of the pressure relief channel size by driving the barrier cover 13 through the slide rod 12 to achieve stable pressure control, ensuring that the pressure stabilizing structure 4 can function stably and reliably.

[0046] Furthermore, a slide rod 12 is fitted inside the sleeve 10, and the top end of the slide rod 12 extends out of one side of the sleeve 10 and is fixedly installed with a spring 11.

[0047] The other end of the spring 11 is fixedly installed to the top of the inside of the upper cover 9;

[0048] A barrier cover 13 is hinged to the bottom end of the slide rod 12, and the barrier cover 13 is sleeved together with the hollowed-out part in the middle of the pressure relief pipe 2. The slide rod 12 is sleeved inside the sleeve 10. The top end of the slide rod 12 extends out of one side of the sleeve 10 and is fixedly installed with a spring 11. The other end of the spring 11 is fixed to the top end inside the upper cover 9. The barrier cover 13 is hinged to the bottom end of the slide rod 12, and the barrier cover 13 is sleeved together with the hollowed-out part in the middle of the pressure relief pipe 2. When the pressure inside the distribution cabinet 1 is within a range that will not cause the cover plate 3 to snap open, if the pressure increases slightly, the pressure will push the barrier cover 13 to move upward, thereby causing the slide rod 12 to slide upward in the sleeve 10 and compress the spring 11. At this time, the pressure relief channel in the hollowed-out part in the middle of the pressure relief pipe 2 is opened, and the pressure is discharged through the pressure relief channel. When the pressure decreases, the spring 11 returns to its deformation, pushing the slide rod 12 and the barrier cover 13 to reset and re-seal the pressure relief channel. This structure enables automatic adjustment of the internal pressure of the distribution cabinet 1. It can actively release pressure before the pressure reaches the level that would cause the cover plate 3 to break open, thus ensuring the stability of the internal pressure of the distribution cabinet 1. This effectively avoids the adverse effects of pressure fluctuations on the internal electrical components and improves the safety and reliability of the operation of the distribution cabinet 1.

[0049] Furthermore, the voltage stabilizing structure 4 also includes a sliding plate 14 and a slider 15. A set of sliding plates 14 is fixedly installed on both sides of the upper cover 9, and the two sets of sliding plates 14 are symmetrical.

[0050] The sleeve 10 has an opening in the middle, and the slide rod 12 has an inclined groove corresponding to the opening of the sleeve 10.

[0051] A slider 15 is slidably installed in the inclined groove of the slide rod 12, and both sides of the slider 15 are slidably installed with the slide plate 14. The slide plate 14 and slider 15 in the pressure stabilizing structure 4 further optimize the stability and accuracy of the pressure regulation process. The symmetrical slide plates 14 fixedly installed on both sides of the upper cover 9 slide in cooperation with the slider 15 slidably installed in the inclined groove of the slide rod 12. When the slide rod 12 slides up and down in the sleeve 10, the slider 15 will move synchronously in the inclined groove of the slide rod 12 and under the restriction of the slide plate 14. The slide plate 14 guides the sliding direction of the slider 15, effectively preventing the slide rod 12 from deviating or shaking during the sliding process, ensuring that the slide rod 12 always moves stably along the preset direction, thereby ensuring that the barrier cover 13 can accurately adjust the opening and closing of the pressure relief channel at the hollowed-out part of the pressure relief pipe 2. This structural design avoids problems such as inaccurate pressure relief channel adjustment and pressure control failure caused by the offset of slide bar 12, further enhancing the stability and reliability of the pressure regulation structure 4, and providing a stronger guarantee for the stability of the internal pressure of distribution cabinet 1.

[0052] In summary:

[0053] When the electrical components inside the distribution cabinet 1 generate heat, causing a slight increase in pressure (this pressure will not cause the cover plate 3 to snap open), the pressure will act on the barrier cover 13 in the pressure stabilizing structure 4. The pressure pushes the barrier cover 13 upward, and the barrier cover 13 drives the slide rod 12, which is hinged to it, to slide upward inside the sleeve 10. During the upward sliding of the slide rod 12, it will compress the spring 11 fixed at the top. At the same time, the slider 15, which is slidably installed in the inclined groove of the slide rod 12, slides along the sliding plates 14 that are symmetrically fixed on both sides of the upper cover 9 under the action of the slide rod 12. The sliding plates 14 guide the slider 15, ensuring that the slide rod 12 always moves stably in the preset direction, and preventing the slide rod 12 from deviating, which would cause the barrier cover 13 to fail to accurately disengage from the pressure relief channel. As the barrier cover 13 moves upward and disengages from the hollowed-out part in the middle of the pressure relief pipe 2, the pressure relief channel is opened, and the pressure inside the distribution cabinet 1 enters the hollowed-out area in the middle of the pressure relief pipe 2 through the through holes around the pressure relief pipe 2, and is then discharged in a directional manner through the pressure relief channel. When the internal pressure of the distribution cabinet 1 drops to the normal range, the spring 11 returns to its original deformation, generating a downward elastic force that pushes the slide rod 12 to slide downward in the sleeve 10. The slide rod 12 drives the barrier cover 13 to reconnect with the hollowed-out part in the middle of the pressure relief pipe 2, sealing the pressure relief channel, thereby realizing the automatic adjustment of the internal pressure of the distribution cabinet 1, achieving the effect of stabilizing the pressure, and avoiding the impact of slight pressure fluctuations on the internal electrical components. When the internal pressure of the distribution cabinet 1 becomes excessively high due to faults or other reasons (the pressure reaches the level that causes the cover plate 3 to break open), firstly, the pressure stabilizing structure 4 will perform preliminary pressure relief. The pressure pushes the barrier cover 13 to move upward quickly, driving the slide rod 12 to compress the spring 11, opening the pressure relief channel to release pressure. However, due to the excessive pressure, the pressure relief speed of the pressure stabilizing structure 4 cannot meet the pressure discharge requirements, and the pressure will continue to accumulate inside the distribution cabinet 1. As the pressure increases, it acts on the cover plate 3 on the back of the distribution cabinet 1. When the pressure reaches the limit of the buckle at the bottom of the cover plate 3 in the snap-fit ​​structure 5, the two specially designed snaps at the bottom of the cover plate 3 break actively. Under the pressure, the bottom of the cover plate 3 opens, forming a large-area emergency pressure relief port. At this time, the high pressure inside the distribution cabinet 1 is quickly discharged through the emergency pressure relief port, instantly releasing the internal pressure and preventing the cabinet body of the distribution cabinet 1 from deforming or the internal electrical components from being severely damaged due to excessive pressure. At the same time, the unbroken snaps in the snap-fit ​​structure 5 can still play a certain limiting role in the cover plate 3, preventing the cover plate 3 from completely detaching from the distribution cabinet 1 and causing the loss of components. Ultimately, the effect of emergency pressure relief is achieved to protect the cabinet body and internal components.

[0054] 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 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stable electrical gas-insulated switchgear with directional pressure relief, comprising a distribution cabinet (1), characterized in that, Also includes: A set of pressure relief pipes (2) are installed on both sides of the power distribution cabinet (1), and a set of voltage stabilizing structure (4) is installed on the side of the two sets of pressure relief pipes (2) that are close to the inside of the power distribution cabinet (1). Multiple sets of cover plates (3) are installed on one side of the back of the power distribution cabinet (1), and a set of snap-fit ​​structures (5) are installed around the multiple sets of cover plates (3), and the cover plates (3) are installed together with the power distribution cabinet (1) through the multiple sets of snap-fit ​​structures (5).

2. A stable electrical gas-insulated switchgear with directional pressure relief according to claim 1, characterized in that, The snap-fit ​​structure (5) includes a pin (6) and a socket (7). The back of the power distribution cabinet (1) is provided with multiple sets of openings, and a set of pins (6) are fixedly installed around the openings of the power distribution cabinet (1). The multiple openings of the power distribution cabinet (1) are each fitted with a set of cover plates (3), and a set of pins (6) are fixedly installed on the side of the multiple cover plates (3) away from the power distribution cabinet (1). All of the aforementioned pins (6) are connected to the socket (7), and the pins (6) are made of nylon.

3. A stable electrical gas-insulated switchgear with directional pressure relief according to claim 1, characterized in that, The pressure relief pipe (2) has a set of through holes around the inside of the distribution cabinet (1), and the middle part of the pressure relief pipe (2) is hollowed out and connected to the through holes.

4. A stable electrical gas-insulated switchgear with directional pressure relief according to claim 1, characterized in that, The voltage stabilizing structure (4) includes a base (8), a top cover (9) and a sleeve (10). The pressure relief pipe (2) is fixedly installed with the base (8) on one side near the inside of the distribution cabinet (1). The base (8) is fitted with a top cover (9), and a sleeve (10) is fixedly installed at the bottom of the base (8). The middle part of the sleeve (10) is hollowed out.

5. A stable electrical gas-insulated switchgear with directional pressure relief according to claim 4, characterized in that, The sleeve (10) is fitted with a slide rod (12), and the top end of the slide rod (12) extends out of one side of the sleeve (10) and is fixedly installed with a spring (11); The other end of the spring (11) is fixedly installed to the top of the inside of the cover (9); The bottom end of the slide bar (12) is hinged with a barrier cover (13), and the barrier cover (13) is sleeved together with the hollowed-out part in the middle of the pressure relief pipe (2).

6. A stable electrical gas-insulated switchgear with directional pressure relief according to claim 4, characterized in that, The voltage stabilizing structure (4) also includes a sliding plate (14) and a slider (15). A set of sliding plates (14) is fixedly installed on both sides of the upper cover (9), and the two sets of sliding plates (14) are symmetrical. The sleeve (10) has an opening in the middle, and the slide rod (12) has an inclined groove at the opening of the sleeve (10); A slider (15) is slidably installed in the inclined groove of the slide bar (12), and both sides of the slider (15) are slidably installed together with the slide plate (14).

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