Primary and secondary fusion complete environment-friendly gas insulated looped network box

Abstract

The invention discloses a primary and secondary fusion complete environment-friendly gas insulated looped network box, which comprises a box body, a load switch is arranged in the switch chamber; the gas tank is filled with environment-friendly gas; a cable chamber; a gas storage space is formed between the support and the gas tank; a leak-proof rod; a one-way valve; a closing frame; a drive spring; a mounting hole; a rebound spring; the swing rod is arranged on one side of the load switch and is used for switching off or switching on the load switch; the connecting rod is connected with the swing rod and the driving rod and used for transmission; one end of the driving rod is connected with the connecting rod; the gear is connected to the driving rod; the gear tooth rod is meshed with the gear, penetrates through the air box and is fixedly connected with the sealing plate; when air leakage occurs at multiple positions, the closing plate closes the air box, drives the grounding switch to be grounded and cuts off the load switch. The invention has the following beneficial effects: the primary and secondary fusion complete environment-friendly gas insulated looped network box can automatically detect the gas leakage position and seal the gas leakage position so as to restrain the leakage of environment-friendly gas.

Description

Technical Field

[0001] The invention relates to a primary and secondary fusion complete set of environmentally friendly gas insulation ring network box. Background Art

[0002] The integrated primary and secondary environmentally friendly gas-insulated ring main unit is a high-voltage switchgear that integrates both primary and secondary equipment in a single device. It is mainly used in the distribution network in the power system. The equipment uses environmentally friendly gas as the main insulating medium. Through compact design and advanced technology, it realizes efficient power transmission and distribution and intelligent management. Its design goal is to provide a high-reliability, low-maintenance and environmentally friendly power solution.

[0003] Among them, the primary equipment mainly includes: Circuit breaker / load switch: used to open and close the circuit. Isolating switch: used to isolate the circuit from the power supply for easy maintenance. Current transformer and voltage transformer: used to measure current and voltage. Busbar: used to connect various switchgear and transmit electrical energy. Grounding switch: used for grounding to ensure safety during maintenance.

[0004] Secondary equipment mainly includes protection devices: such as microcomputer protection devices, which are used to detect circuit faults and issue tripping commands. Control devices: used to control the operation of primary equipment. Measuring devices: used to monitor the operating status of the power system. Communication devices: used to achieve remote monitoring and communication. Power supply devices: provide power for secondary equipment.

[0005] For existing primary equipment, its modules are mainly divided into: operating mechanism, switch mechanism and cable module. The operating mechanism can be operated by operators to start / close the load switch and disconnector in the switch mechanism, etc. The cable module is mainly used to connect the connection lines between the operating mechanism and the switch mechanism.

[0006] The isolating switch in the existing switch mechanism generally adopts a two-position load switch or a three-position load switch, and a closed gas box is set outside. After assembly, environmentally friendly gas is injected into the gas box to achieve insulation and seal to prevent environmentally friendly gas leakage. A large arc is generated when the isolating switch is switched on and off. After long-term use, the gas box structure ages, and the arc easily causes gas box leakage, which in turn causes environmentally friendly gas to escape from the gas box, reducing the insulation effect.

[0007] In order to solve the above problems, the prior art generally uses an air pressure detection module to detect the air pressure value in the gas box, and when a gas leak is detected, an alarm is issued to inform the operator to handle it. However, in a more urgent gas leak situation, the operator may have a certain time difference before reaching the ring network box and closing it. In this time difference, an emergency may occur. How to detect the gas leak location within the gas leak period and curb the leakage of environmental protection gas is the problem to be solved by this application. Summary of the invention

[0008] The purpose of the present invention is to provide a one-two fusion complete set of environmentally friendly gas insulated ring network box. The one-two fusion complete set of environmentally friendly gas insulated ring network box can automatically detect the leaking position and seal the leaking position to prevent the leakage of environmentally friendly gas.

[0009] The above technical objectives of the present invention are achieved through the following technical solutions: A primary and secondary integrated environmentally friendly gas insulated ring network box, comprising: a box body; an operating room, which is arranged on one side of the box body; a switch room, which is arranged on one side of the operating room, and a load switch is arranged in the switch room; a closed gas box, which is wrapped around the outside of the switch room and is filled with environmentally friendly gas; a cable room, which is arranged on one side of the box body and is used to connect the operating room with various components in the switch room for wire connection; a support, which is fixedly arranged on the side outside the gas box near the bottom; a closing plate, which is fixedly arranged on the support and has a gas storage space between the support and the gas box; a leak-proof rod, which is sealed and slidably arranged in the gas storage space and can slide under the action of gas pressure; a one-way valve, which is arranged on the leak-proof rod so that the air intake direction is controlled to be one-way; a closed frame, which is connected to the top side of the gas storage space through a sealing ring; when a single leak occurs, the environmentally friendly gas in the gas box enters the gas storage space and is discharged through the one-way The valve enters under the leak-proof rod, pushing the leak-proof rod to rise to the leaking position and close it; a driving spring is arranged between the support and the closing plate; a mounting hole is arranged on the closing plate and is fixedly connected to one end of the driving spring; a rebound spring is arranged between the support and the leak-proof rod; when multiple leaks occur, the environmentally friendly gas in the gas box drives the leak-proof rod to move up until the leak-proof rod and the closing frame are separated from the gas storage space, and the driving spring drives the closing plate to cover the gas box and close the leaking position; a swing arm is arranged on one side of the load switch and is used to cut off or connect the load switch; a connecting rod connects the swing arm and the driving rod for transmission; a driving rod is connected to the connecting rod at one end and to the grounding switch at the other end; a gear is connected to the driving rod; a gear rod meshes with the gear, one end of which passes through the gas box and is fixedly connected to the closing plate; when multiple leaks occur, the closing plate closes the gas box and drives the grounding switch to be grounded and cut off the load switch.

[0010] The present invention is further configured such that the closing plate and the support are both in a "door" shape, which matches the shape of the air box.

[0011] The present invention is further configured as follows: the top of the gas storage space is closed, and the anti-leakage rod can slide in the gas storage space under the action of gas pressure.

[0012] The present invention is further configured as follows: the one-way valve allows gas to enter from the upper end of the gas storage space and enter the lower end of the anti-leakage rod through the one-way valve.

[0013] The present invention is further configured such that: the closed frame is lifted and ejected when the air pressure in the air storage space continues to rise.

[0014] The present invention is further configured as follows: the closing plate comprises three combined plates, and sealing strips can be arranged on the bracket in the gaps between the three combined plates, so that the sealing strips fill the gaps between the combined plates to prevent air leakage.

[0015] The present invention is further configured such that: the rebound spring is used to generate a collision sound between the anti-leakage rod and the closing frame to achieve a warning effect.

[0016] The present invention is further configured as follows: when multiple air leaks cause the closing plate to move to abut against one side of the air box under the action of a driving spring, the closing plate drives the gear rod to move, and the gear rod drives the gear to rotate clockwise when it moves, so that the grounding switch is connected, and the load switch is disconnected through the action of the driving rod and the connecting rod.

[0017] In summary, the present invention has the following beneficial effects: 1. Automatically detect the leak location: The present invention can automatically detect the leakage position of the gas box by arranging the leakage-proof rod and the one-way valve inside the gas box. When the gas box leaks, the leakage-proof rod is automatically lifted to the leakage position under the action of air pressure and seals the leakage position, thereby effectively preventing further leakage of environmentally friendly gas.

[0018] 2. Multiple air leakage protection: The present invention designs a gas storage space and a closed frame. In the case of multiple gas leaks, the leak-proof rods and the closed frame can gradually close multiple gas leaking locations, delaying the escape of environmentally friendly gas and improving the safety and reliability of the equipment.

[0019] 3. Emergency warning function: The present invention is provided with a rebound spring and a collision mechanism. When there are multiple leaks, the collision between the anti-leakage rod and the closing frame can produce a loud warning sound to remind the operator to deal with it in time. In addition, the collision between the closing plate and the air box can also produce obvious vibration, further improving the warning effect.

[0020] 4. Automatic load cut-off switch: The present invention realizes the linkage between the grounding switch and the load switch by designing the connecting rod, driving rod and gear and other mechanisms. In the case of multiple gas leaks, the closing plate drives the gear rod when moving, so that the grounding switch is connected and the load switch is disconnected, realizing automatic power-off protection and preventing electrical accidents caused by gas leaks.

[0021] In summary, the primary and secondary integrated environmentally friendly gas insulated ring network box of the present invention not only solves the problem of leakage detection and control difficulty in the prior art, but also has significant advantages in multiple leakage protection, emergency warning, automatic power-off protection, etc., which greatly improves the safety, reliability and environmental protection performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a complete set of environmentally friendly gas ring main cabinets that integrates primary and secondary elements; Figure 2 It is a structural diagram of a primary device; Figure 3 for Figure 2 Left view of Figure 4 for Figure 3 perspective drawing; Figure 5 It is a rear view structural diagram of a primary device; Figure 6 for Figure 5 Exploded view of; Figure 7 It is a structural schematic diagram of a closed plate; Figure 8 for Figure 6 Schematic diagram of the structure after deleting the closing plate; Fig. 9 for Figure 8 Schematic diagram of the structure after deleting the air box shell; Fig.10 for Fig. 9 Schematic diagram of the side structure.

[0023] Figure numerals: 1. Box body; 2. Operating room; 3. Switch room; 4. Load switch; 5. Gas box; 6. Cable room; 7. Support; 8. Closing plate; 9. Gas storage space; 10. Leakage-proof rod; 11. One-way valve; 12. Closing frame; 13. Driving spring; 14. Mounting hole; 15. Rebound spring; 16. Rocker arm; 17. Connecting rod; 18. Driving rod; 19. Earthing switch; 20. Gear; 21. Gear rod. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0026] In the description of the present invention, "multiple" means two or more than two, unless otherwise clearly defined. In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, a primary and secondary integrated environmentally friendly gas insulated ring network box includes primary equipment and secondary equipment. The internal components of the primary equipment and the secondary equipment are prior art and will not be repeated here. This application mainly describes the structural composition of the primary equipment.

[0029] like Figure 2 , Figure 3 , Figure 4 As shown, In order to detect a single leak and automatically seal it, The primary equipment includes a box body 1. An operating room 2 is arranged on one side of the box body 1, a switch room 3 is arranged on one side of the operating room 2, and a load switch 4 is arranged in the switch room 3. A closed gas box 5 is wrapped outside the switch room 3. A layer of rubber sealing material can be coated outside the gas box 5 to ensure that the gas box 5 is closed. A cable room 6 is arranged on one side of the box body 1, and the cable room 6 is used to connect the operating room 2 and various components in the switch room 3 for wire connection.

[0030] Among them, Figure 4 , Figure 5As shown, a support 7 fixed to the air box 5 is provided on the outside of the air box 5 near the bottom. A closing plate 8 is fixedly provided on the support 7. The closing plate 8 and the support 7 are both in the shape of a "door", which matches the shape of the air box 5. An air storage space 9 is provided between the closing plate 8 and the air box 5. A leak-proof rod 10 is provided in a sealed and sliding manner in the air storage space 9. The leak-proof rod 10 can slide in the air storage space 9 under the action of air pressure, wherein a plurality of one-way valves 11 are provided on the leak-proof rod 10, so that the air intake direction is controlled to be one-way: from the upper end to the lower end. And the top of the air storage space 9 is closed.

[0031] Further, in the initial state, the anti-leakage rod 10 is placed near the bottom of the air box 5 .

[0032] When the gas box 5 leaks, the environmentally friendly gas in the gas box 5 enters the gas storage space 9 under the action of the air pressure difference, and the leaking position is on the upper side of the leak-proof rod 10. The environmentally friendly gas enters the gas storage space 9 and enters the lower side of the leak-proof rod 10 through the action of the one-way valve 11, so that the air pressure on the lower side of the leak-proof rod 10 increases. Under the action of the air pressure, the leak-proof rod 10 is pushed and lifted until it reaches the leaking position, and the leaking position is sealed to prevent further leakage of the environmentally friendly gas.

[0033] Through the above arrangement, when a gas leak occurs, the anti-leakage rod 10 automatically lifts and slides under the action of air pressure, so that the anti-leakage rod 10 moves to the gas leaking position and seals the gas leaking position, thereby achieving the technical purpose of automatically detecting the gas leaking position and sealing the gas leaking position.

[0034] like Figure 6 , Figure 7 As shown, In order to detect two or more leaks and prevent the escape of environmentally friendly gas A closing frame 12 is provided on one side of the top of the gas storage space 9 through a sealing ring. The closing frame 12 closes the top of the gas storage space 9 and is lifted and ejected when the air pressure in the gas storage space 9 continues to rise.

[0035] As mentioned above, when there are two or more leaks, the air pressure in the air storage space 9 gradually rises, wherein the leak-proof rod 10 increases the air pressure at its bottom under the action of the one-way valve 11, and the leak-proof rod 10 gradually rises to the first leak position. Afterwards, since other leak positions cannot be closed, environmentally friendly gas will still gradually enter the air storage space 9, further driving the leak-proof rod 10 to rise until the leak-proof rod 10 rises to the top and abuts against the closing frame 12.

[0036] At this time, the environmentally friendly gas in the gas box 5 continues to enter the gas storage space 9, so that the leak-proof belt drives the closed frame 12 to move, so that the closed frame 12 is squeezed and pushed out of the gas storage space 9. At this time, the leak-proof rod 10 serves as a medium at the top of the closed gas storage space 9, and the environmentally friendly gas continues to enter the gas storage space 9 until the leak-proof rod 10 is pushed out of the gas storage space 9.

[0037] Corresponding to the above, at least two driving springs 13 are arranged between the support 7 and the closing plate 8. Correspondingly, a mounting hole 14 fixedly connected to one end of the driving spring 13 is arranged on the closing plate 8. Under the action of the driving spring 13, and after the closing frame 12 and the anti-leakage rod 10 are pushed out of the gas storage space 9, the closing frame 12 moves toward the position of the gas box 5 under the action of the stretched driving spring 13, so that the driving spring 13 enters the mounting hole 14. At this time, one side of the closing plate 8 abuts against the gas leakage position of the gas box 5, delaying the escape of the environmental protection gas, ensuring that the escape of the environmental protection gas can still be curbed in the case of multiple gas leaks.

[0038] The closing plate 8 comprises three combined plates. The gaps between the three combined plates can be filled with sealing strips on the bracket so that the sealing strips fill the gaps between the combined plates to prevent air leakage.

[0039] like Figure 8 As shown, In order to achieve the purpose of warning when there are multiple leaks. The present application provides a rebound spring 15 between the support 7 and the anti-leakage rod 10. When there are multiple leaks, due to the large pressure difference between the air storage space 9 and the air box 5, the airflow enters the air storage space 9 at a faster speed, causing the anti-leakage rod 10 to quickly rise to collide with the closed frame 12. The closed frame 12 produces a loud collision sound with the anti-leakage rod 10 under collision, and the rebound force generated by the collision and the elastic force of the rebound spring 15 cause the anti-leakage rod 10 to collide back and forth above and below the collision position, achieving a loud warning effect.

[0040] In addition, after the closing frame 12 and the anti-leakage rod 10 are separated from the air storage space 9 in turn, the contact between the closing plate 8 and the air box 5 will generate a similar large impact force, causing the air box 5 to vibrate as a whole, thereby achieving a further warning effect.

[0041] like Fig. 9 , Fig.10 As shown, In order to cut off the leakage when there are multiple leaks and the operator is not on site The purpose of load switch 4. A rocker arm 16 is provided on one side of the load switch 4. When the rocker arm 16 rotates, it can drive the load switch 4 to cut off or connect. A connecting rod 17 is connected to one end of the rocker arm 16. The connecting rod 17 extends downward to the bottom and is provided with a plurality of mutually hinged drive rods 18. A grounding switch 19 is connected to one end of the drive rod 18. As described above, through the arrangement of the connecting rod 17 and the drive rod 18, the grounding switch 19 and the load switch 4 are linked to each other. When the grounding switch 19 is closed, the load switch 4 is isolated from the overall circuit. A gear 20 is connected to one end of the drive rod 18. A gear rod 21 is meshed at the top of the gear 20. One end of the gear rod 21 passes through the air box 5 and can be sealed with a sealing ring. The gear rod 21 is fixedly connected to the closing plate 8.

[0042] When there are multiple air leaks, the closing plate 8 moves to abut against one side of the air box 5 under the action of the driving spring 13, so that the closing plate 8 drives the gear rod 21 to move. When the gear rod 21 moves, it drives the gear 20 to rotate clockwise, so that the grounding switch 19 is connected, and the load switch 4 is disconnected under the action of the driving rod 18 and the connecting rod 17, thereby achieving the effect of turning off the power supply, and performing emergency treatment in the state of multiple air leaks, thereby improving the safety factor.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A complete set of environmentally friendly gas insulated ring network box with primary and secondary fusion, characterized in that: include: A box body (1); an operating room (2) arranged on one side of the box body (1); a switch room (3) arranged on one side of the operating room (2), wherein a load switch (4) is arranged in the switch room (3); a closed gas box (5) wrapped around the outside of the switch room (3), wherein the closed gas box (5) is filled with environmentally friendly gas; a cable room (6) arranged on one side of the box body (1) and used for connecting the operating room (2) and various components in the switch room (3) by wires; A support (7) is fixedly arranged on one side of the outside of the air box (5) near the bottom; a closing plate (8) is fixedly arranged on the support (7) and an air storage space (9) is provided between the support and the air box (5); a leak-proof rod (10) is sealingly slidably arranged in the air storage space (9) and can slide under the action of air pressure; a one-way valve (11) is arranged on the leak-proof rod (10) so that the air intake direction is controlled to be one-way; and a closing frame (12) is connected to one side of the top of the air storage space (9) via a sealing ring; When a single gas leak occurs, the environmentally friendly gas in the gas box (5) enters the gas storage space (9) and enters below the leak-proof rod (10) through the one-way valve (11), pushing the leak-proof rod (10) up to the leaking position to seal it; A driving spring (13) is arranged between the support (7) and the closing plate (8); a mounting hole (14) is arranged on the closing plate (8) and is fixedly connected to one end of the driving spring (13); and a rebound spring (15) is arranged between the support (7) and the anti-leakage rod (10); When multiple leaks occur, the environmentally friendly gas in the gas box (5) drives the leak-proof rod (10) to move upward until the leak-proof rod (10) and the closing frame (12) are both separated from the gas storage space (9), and the driving spring (13) drives the closing plate (8) to cover the gas box (5) to close the leaking position; A swing rod (16) is arranged on one side of the load switch (4) and is used to cut off or connect the load switch (4); a connecting rod (17) connects the swing rod (16) and the driving rod (18) and is used for transmission; the driving rod (18) has one end connected to the connecting rod (17) and the other end connected to the grounding switch (19); a gear (20) is connected to the driving rod (18); a gear rod (21) meshes with the gear (20), one end of which passes through the air box (5) and is fixedly connected to the closing plate (8); When multiple gas leaks occur, the closing plate (8) closes the gas box (5) and drives the grounding switch (19) to ground and cut off the load switch (4).

2. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1 is characterized in that: The closing plate (8) and the support (7) are both in the shape of a "door", which matches the shape of the air box (5).

3. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1 is characterized in that: The top of the gas storage space (9) is closed, and the anti-leakage rod (10) can slide in the gas storage space (9) under the action of gas pressure.

4. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1 is characterized in that: The one-way valve (11) allows gas to enter from the upper end of the gas storage space (9) and enter the lower end of the anti-leakage rod (10) through the one-way valve (11).

5. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1, characterized in that: The closed frame (12) is lifted and ejected when the air pressure in the air storage space (9) continues to rise.

6. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1, characterized in that: The closing plate (8) comprises three combined plates, and sealing strips can be arranged on a bracket at the gaps between the three combined plates, so that the sealing strips fill the gaps between the combined plates to prevent air leakage.

7. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1 is characterized in that: The rebound spring (15) is used to generate a collision sound between the anti-leakage rod (10) and the closing frame (12), thereby achieving a warning effect.

8. The one-to-two fusion complete set of environmentally friendly gas insulated ring mainframe according to claim 1, characterized in that: When multiple air leaks cause the closing plate (8) to move to abut against one side of the air box (5) under the action of the driving spring (13), the closing plate (8) drives the gear rod (21) to move. When the gear rod (21) moves, it drives the gear (20) to rotate clockwise, so that the grounding switch (19) is connected, and the load switch (4) is disconnected through the action of the driving rod (18) and the connecting rod (17).

Images