Environment-friendly gas ring main-tie-main unit with air leakage alarm function

Abstract

The application discloses an environment-friendly gas ring main unit with a gas leakage alarm function and belongs to the technical field of gas ring main units. The environment-friendly gas ring main unit with the gas leakage alarm function comprises a ring main unit body, wherein the ring main unit body comprises a normal-pressure cavity and a sealed cavity, the sealed cavity is filled with environment-friendly gas hexafluoride sulfur, an emergency box is arranged on the side wall of the ring main unit body, a placing groove is formed in the side wall of the emergency box away from the ring main unit body, a gas outlet pipe is in communication with the side wall of a gas storage tank, and an emergency structure is arranged in the sealed box. The emergency box arranged on the side wall of the ring main unit body can trigger the emergency structure in the emergency box after accidental gas leakage of the ring main unit body, thereby warning the staff and supplementing the environment-friendly gas in the sealed cavity of the ring main unit body. If the oxygen in the outside world enters the sealed cavity, the oxygen can be consumed through a chemical reaction, thereby ensuring the safety of the staff when repairing the ring main unit body.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas ring network cabinets, and particularly relates to an environment-friendly gas ring network cabinet with a gas leakage alarm function. BACKGROUND

[0002] A gas ring network cabinet is an important electrical device used in a power distribution system, mainly used in a 10kV-35kV power system, which connects multiple power supply points through a ring network to realize the distribution and control of electric energy. Since the voltage level inside the ring network cabinet belongs to high-voltage electricity, in order to protect the internal components and also to protect the staff outside the cabinet, the ring network cabinet is usually insulated, and common insulation methods include gas insulation, solid insulation and composite insulation.

[0003] No matter what kind of gas is used to achieve the purpose of gas insulation, it is necessary to ensure that a certain part or the whole of the gas ring network cabinet is isolated from the outside world. Once gas leakage occurs, the environment-friendly gas inside the gas ring network cabinet will escape, and the insulation effect of the ring network cabinet will be greatly reduced.

[0004] The environment-friendly gas ring network cabinet with a gas leakage alarm function disclosed in the patent with the publication number CN117691498A realizes double monitoring of gas leakage through the cooperation of a mechanical gas leakage alarm mechanism and an electronic pressure monitor, improves reliability, avoids the situation that leakage cannot be warned due to the failure of the electronic pressure monitor, and improves the safety of the equipment. However, the patent can only play an alarm role after detecting gas leakage inside the ring network cabinet. When the staff receives the alarm signal, a lot of environment-friendly gas in the ring network cabinet has already leaked, and the ring network cabinet lacking the insulation effect may cause harm to the alarm mechanism or the staff due to the high-voltage electricity inside. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide an environment-friendly gas ring network cabinet with a gas leakage alarm function.

[0006] The technical scheme adopted to solve the above technical problem is:

[0007] An environment-friendly gas ring network cabinet with a gas leakage alarm function, comprising a ring network cabinet body, wherein the ring network cabinet body comprises a normal pressure cavity and a sealed cavity, the sealed cavity is filled with environment-friendly gas hexafluoride sulfur, an emergency box is arranged on the side wall of the ring network cabinet body, a placing groove is formed in the side wall of the emergency box away from the ring network cabinet body, a gas storage tank is arranged in the placing groove, the gas storage tank also contains hexafluoride sulfur, a gas outlet pipe is connected to the side wall of the gas storage tank and communicates with a three-way electromagnetic valve arranged in a cavity in the emergency box.

[0008] The three-way electromagnetic valve is communicated with the air outlet pipe at one end, and is provided with an air pipe at the other end, the air pipe penetrates the side wall of the emergency box and the side wall of the sealing cavity, and the remaining end of the three-way electromagnetic valve is provided with an elbow pipe, the elbow pipe is communicated with a sealing box away from the one end of the three-way electromagnetic valve, and the sealing box is provided with an emergency structure.

[0009] Two parallel sliding grooves are formed in the side wall of the sealing cavity close to the emergency box, sliding rods are respectively and slidably connected in the two sliding grooves, a wind-driven structure is arranged on the side wall of the sliding rod, a reaction box is further arranged on the side wall of the sealing cavity, the reaction box is located below the air pipe, and the reaction box is provided with a pyrogallol and potassium hydroxide solution.

[0010] Through the above technical scheme, the emergency box is arranged on the side wall of the ring network cabinet body, so that after the ring network cabinet body leaks, the emergency structure in the emergency box is triggered, the working personnel is warned, and the sealing cavity of the ring network cabinet body is supplemented with the environment-friendly gas, if the oxygen in the outside world enters the sealing cavity, the oxygen can be consumed by chemical reaction, and the safety of the working personnel when repairing the ring network cabinet body is ensured.

[0011] Further, the three-way electromagnetic valve is provided with a warning light at the top, and the emergency box is provided with a light port at the top, and the light port is located directly above the warning light.

[0012] Through the above technical scheme, when the sealing cavity leaks, the air pressure in the sealing cavity changes, the three-way electromagnetic valve changes the passage, the environment-friendly gas in the gas tank is filled into the sealing cavity, and the warning light is turned on, so that the working personnel can directly see which ring network cabinet body has a problem through the light port.

[0013] Further, the emergency structure includes a warning balloon, a lifting plate, a first toggle switch and a second toggle switch, the warning balloon is arranged at the bottom of the sealing box, the side of the sealing box away from the three-way electromagnetic valve is made of transparent material, a plurality of warning holes are formed in the side wall of the emergency box, the plurality of warning holes are sequentially enlarged from bottom to top, the position of the lowermost warning hole corresponds to the position of the warning balloon, the bottom of the lifting plate abuts against the top of the warning balloon, the lifting plate is slidably connected with the side wall of the sealing box, the first toggle switch and the second toggle switch are arranged on the two side walls of the sealing box respectively, the first toggle switch and the second toggle switch are located at the same height, and the two ends of the lifting plate are located below the first toggle switch and the second toggle switch respectively.

[0014] Through the technical scheme, when the sealed cavity leaks, the internal air pressure changes, the air pressure inside the sealed box changes synchronously, the air pressure inside the warning balloon gradually becomes greater than the air pressure inside the sealed box, the warning balloon expands, the lifting plate is lifted upwards, the first toggle switch and the second toggle switch are opened synchronously, and the staff can check the leakage stage through the warning hole.

[0015] Further, the sealed cavity is provided with an electric push rod, the second toggle switch is electrically connected with the electric push rod, and the first toggle switch is electrically connected with the three-way electromagnetic valve.

[0016] Through the technical scheme, since the first toggle switch and the second toggle switch are at the same height, the two toggle switches are triggered at the same time, the three-way electromagnetic valve and the electric push rod are started at the same time, and then the gas storage tank is communicated with the inside of the sealed cavity.

[0017] Further, the lifting plate side wall is provided with two movement rods, the sealed box side wall is provided with two vertical grooves, and the two movement rods are slidably connected with the inner walls of the two vertical grooves.

[0018] Through the technical scheme, the movement rods and the vertical grooves are arranged, so that the lifting plate can stably slide in the sealed box, and the stable lifting height of the lifting plate can make the first toggle switch and the second toggle switch be stably triggered at the same time.

[0019] Further, the air moving structure comprises a push plate, an impeller, a threaded rod, a top plate and two support plates, the push plate is arranged on the side walls of the two sliding rods, the push plate side wall is fixedly connected with the output end of the electric push rod, the two support plates are fixedly arranged on the side walls of the push plate away from the electric push rod, the impeller is arranged between the two support plates and rotatably connected with them, the impeller is located at the same height as the air pipe, a threaded groove is formed in the impeller, the threaded rod is arranged in the threaded groove, a blank rod is arranged on the top of the threaded rod, and the top of the blank rod is rotatably connected with the top plate.

[0020] Through the technical scheme, the electric push rod can push the push plate to the position of the air outlet pipe, so that the gas discharged from the gas storage tank can drive the impeller, the rotation of the impeller drives the threaded rod to rise and fall, so that the threaded rod pushes the solid box downwards, the pyrogallol and potassium hydroxide solution react, and the oxygen in the sealed cavity is consumed.

[0021] Further, the threaded rod is sleeved with an extension spring, one end of the extension spring is fixedly connected with the top of the support plate, and the other end is fixedly connected with the bottom wall of the top plate.

[0022] Through the technical scheme, the force applied to the top plate by the extension spring makes the threaded rod and the blank rod have a tendency to be always in a high position, i.e., a state that the threaded rod is not in contact with the solid tank, and the environmental gas in the sealed cavity is blown by the impeller when the gas is not filled, and the extension spring drives the threaded rod and the blank rod to return to the original position.

[0023] Further, the reaction box comprises a solid tank and a liquid tank, the liquid tank is divided into a slope part and a tank part, the slope part is located at the top of the tank part, the top and the bottom of the slope part are designed to be open, the top of the tank part is also designed to be open, the potassium hydroxide solution is located in the tank part, the solid tank is shaped the same as the slope part, the sidewall of the solid tank is in contact with the inner wall of the slope part, and the pyrogallol is located in the solid tank.

[0024] Through the technical scheme, the solid tank is inlaid in the slope part, but since the top of the slope part is designed to be open, the downward movement of the threaded rod can push the solid tank downward, so that the originally sealed pyrogallol can be in contact with the potassium hydroxide solution, and then consume the oxygen in the sealed cavity.

[0025] Further, the sidewall of the slope part is provided with a plurality of through holes, the inner wall of the slope part is provided with two first magnetic strips, and the sidewalls of the solid tank are provided with two second magnetic strips at the same positions.

[0026] Through the technical scheme, the plurality of through holes can better contact the air in the sealed cavity, facilitate the consumption of oxygen, so that the components in the sealed cavity can be protected by the environmental gas as much as possible, and the maintenance personnel can also be protected to a certain extent.

[0027] Further, the sidewall of the solid tank is provided with a rubber strip, the bottom of the solid tank is provided with a hole, the hole is provided with a sealing paper, the bottom of the tank part is fixedly provided with a top block, the top block is located below the hole, and the sidewall of the top block is fixedly connected with a plurality of protruding strips.

[0028] Through the technical scheme, the rubber strip can block the gap between the tank part and the slope part as much as possible, so as to prevent the evaporation of the potassium hydroxide solution, and when the solid tank is pushed out by the threaded rod, the solid tank falls on the top block, the sealing paper is broken, the pyrogallol and the potassium hydroxide solution are in contact, and the protruding strips can also make the gap between the hole and the top block, so as to facilitate the contact reaction of the pyrogallol and the potassium hydroxide solution.

[0029] The beneficial effects of the present application are as follows:

[0030] (1) The emergency box is arranged outside the ring net cabinet body, so that after accidental gas leakage of the ring net cabinet body, the emergency structure in the emergency box is triggered, the warning light at the top of the three-way electromagnetic valve can warn the staff, and the gas storage tank can also supplement the environment-friendly gas in the sealed cavity of the ring net cabinet body, if the oxygen in the outside enters the sealed cavity, the oxygen can be consumed by the chemical reaction of pyrogallol and potassium hydroxide solution, and the safety of the components in the sealed cavity of the ring net cabinet body is ensured;

[0031] (2) The three-way electromagnetic valve is arranged between the sealed box and the sealed cavity, when the sealed cavity leaks, the internal gas pressure changes, so that the internal gas pressure of the sealed box changes synchronously, the internal gas pressure of the warning balloon gradually becomes greater than the internal gas pressure of the sealed box, the warning balloon expands, and the lifting plate is lifted upwards, so that the first and second toggle switches are opened synchronously, and the staff can also check the leakage stage through the warning hole, even if the internal leakage of the sealed cavity is slow, the staff can also know whether the leakage is in progress by observing the size of the warning balloon;

[0032] (3) The solid box is embedded in the slope part, since the top of the slope part is designed to be open, the downward moving threaded rod will push the solid box downward, the first and second magnetic strips are separated from each other, so that the originally sealed pyrogallol can be in contact with the potassium hydroxide solution, the protruding strip can retain the gap between the hole and the top block, so that the two can be in better contact, and then consume the oxygen in the sealed cavity. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the overall structure schematic diagram of the present application;

[0034] Figure 2 It is the structure connection schematic diagram of the emergency structure in the present application;

[0035] Figure 3 It is the connection schematic diagram of the gas storage tank and the emergency box in the present application;

[0036] Figure 4 It is the structure connection schematic diagram in the sealed cavity of the present application;

[0037] Figure 5 It is the connection schematic diagram of the electric push rod and the wind-driven structure in the present application;

[0038] Figure 6 It is the structure schematic diagram of the wind-driven structure in the present application;

[0039] Figure 7 It is the structure schematic diagram of the solid box, the slope part and the box part in the present application;

[0040] Figure 8is a sectional view of the solid box in the present application;

[0041] Figure 9 is a sectional view of the slope part and the box part in the present application.

[0042] Fig. 1 is a ring main unit body; 2 is a normal pressure cavity; 3 is a sealed cavity; 4 is an emergency box; 5 is a placing groove; 6 is a gas storage tank; 7 is a gas outlet pipe; 8 is a three-way electromagnetic valve; 9 is a vent pipe; 10 is an elbow pipe; 11 is a sealed box; 12 is a sliding groove; 13 is a sliding rod; 15 is pyrogallic acid; 16 is potassium hydroxide solution; 17 is a warning light; 18 is a light port; 19 is a warning balloon; 20 is a lifting plate; 21 is a first toggle switch; 22 is a second toggle switch; 23 is a warning hole; 24 is an electric push rod; 25 is a moving rod; 26 is a vertical groove; 27 is a push plate; 28 is an impeller; 29 is a threaded rod; 30 is a top plate; 31 is a support plate; 32 is a threaded groove; 33 is a blank rod; 34 is a telescopic spring; 35 is a solid box; 36 is a slope part; 37 is a box part; 38 is a through hole; 40 is a first magnetic stripe; 41 is a second magnetic stripe; 42 is a rubber strip; 43 is a hole; 44 is a sealing paper; 45 is a top block; 46 is a protruding strip. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0044] As shown in Figure 1 - Figure 9 The present embodiment is an environmental protection gas ring main unit with a gas leakage alarm function, which comprises a ring main unit body 1, the ring main unit body 1 comprises a normal pressure cavity 2 and a sealed cavity 3, the sealed cavity 3 is filled with environmental protection gas hexafluoride sulfur, an emergency box 4 is arranged on the side wall of the ring main unit body 1, a placing groove 5 is formed on the side wall of the side of the emergency box 4 away from the ring main unit body 1, a gas storage tank 6 is arranged in the placing groove 5, the gas storage tank 6 also contains hexafluoride sulfur, a gas outlet pipe 7 is connected to the side wall of the gas storage tank 6, a cavity is formed in the emergency box 4, a three-way electromagnetic valve 8 is arranged in the cavity, the gas outlet pipe 7 penetrates through the side wall of the placing groove 5 and is connected to the three-way electromagnetic valve 8, the gas pressure in the gas storage tank 6 is slightly greater than the pressure in the sealed cavity 3, so when the three-way electromagnetic valve 8 is connected to the gas storage tank 6, the environmental protection gas in the gas storage tank 6 will be filled into the sealed cavity 3.

[0045] Referring to Figure 1 and Figure 2The top of the three-way electromagnetic valve 8 is provided with a warning light 17, and the top of the emergency box 4 is provided with a light hole 18, which is located directly above the warning light 17. When the sealing cavity 3 leaks, the internal gas pressure of the sealing cavity 3 changes, which changes the passage of the three-way electromagnetic valve 8, so that the environment-friendly gas in the gas storage tank 6 is filled into the sealing cavity 3, and at the same time the warning light 17 is turned on. The staff can directly see which ring main unit body 1 has a problem through the light hole 18, and the three-way electromagnetic valve 8 can also set up the transmission of remote signals, and then remotely notify the staff of the air leakage situation.

[0046] Referring to Figure 2 , one end of the three-way electromagnetic valve 8 is communicated with the gas outlet pipe 7, and the other end is provided with an air pipe 9, the air pipe 9 penetrates the side wall of the emergency box 4 and the side wall of the sealing cavity 3, and the remaining end of the three-way electromagnetic valve 8 is provided with an elbow pipe 10, the end of the elbow pipe 10 away from the three-way electromagnetic valve 8 is communicated with a sealing box 11. In the initial state, the sealing cavity 3 is communicated with the sealing box 11, so the gas pressure between the two parts is the same.

[0047] Referring to Figure 2 and Figure 3 , the sealing box 11 is provided with an emergency structure, the emergency structure includes a warning balloon 19, a lifting plate 20, a first toggle switch 21 and a second toggle switch 22, the warning balloon 19 is arranged at the bottom of the sealing box 11, the side wall of the sealing box 11 opposite to the three-way electromagnetic valve 8 is made of transparent material, and a plurality of warning holes 23 are formed in the side wall of the emergency box 4. The plurality of warning holes 23 are sequentially enlarged from bottom to top, the position of the lowermost warning hole 23 corresponds to the position of the warning balloon 19, and the color of the warning balloon 19 is bright, for example, red, which is more convenient for the staff to observe through the warning hole 23.

[0048] The bottom of the lifting plate 20 abuts against the top of the warning balloon 19, the lifting plate 20 is slidably connected with the side wall of the sealing box 11, the first toggle switch 21 and the second toggle switch 22 are arranged on the two side walls of the sealing box 11 respectively, the first toggle switch 21 and the second toggle switch 22 are located at the same height, and the two ends of the lifting plate 20 are located below the first toggle switch 21 and the second toggle switch 22 respectively. An electric push rod 24 is arranged in the sealing cavity 3, the second toggle switch 22 is electrically connected with the electric push rod 24, and the first toggle switch 21 is electrically connected with the three-way electromagnetic valve 8. Since the sealing box 11 is communicated with the sealing cavity 3 through the three-way electromagnetic valve 8, when the sealing cavity 3 leaks, the internal gas pressure changes, which causes the internal gas pressure of the sealing box 11 to change synchronously. The internal gas pressure of the warning balloon 19 gradually becomes greater than the internal gas pressure of the sealing box 11, the warning balloon 19 expands immediately, and the lifting plate 20 is lifted upward, so that the first toggle switch 21 and the second toggle switch 22 are opened synchronously. Moreover, the staff can check the size of the warning balloon 19 through the warning hole 23, and then know which stage the air leakage is in.

[0049] Since the leakage process inside the sealed cavity 3 is not necessarily a one-time success, many leakage processes are slow, so the setting of the observable warning hole 23 can facilitate the staff to intuitively understand the leakage stage inside the sealed cavity 3.

[0050] Referring to Figure 2 , two movement rods 25 are arranged on the side wall of the lifting plate 20, and two vertical grooves 26 are arranged on the side wall of the sealed box 11. The two movement rods 25 are respectively in sliding connection with the inner walls of the two vertical grooves 26. The arrangement of the movement rod 25 and the vertical groove 26 enables the lifting plate 20 to stably slide in the sealed box 11. The stable lifting height of the lifting plate 20 enables the first toggle switch 21 and the second toggle switch 22 to be stably triggered at the same time.

[0051] Referring to Figure 4 , Figure 5 and Figure 6 , two parallel sliding grooves 12 are arranged on the side wall of the sealed cavity 3 close to the emergency box 4. Two sliding rods 13 are respectively in sliding connection with the two sliding grooves 12. A pneumatic structure is arranged on the side wall of the sliding rod 13. The pneumatic structure includes a push plate 27, an impeller 28, a threaded rod 29, a top plate 30, and two support plates 31. The push plate 27 is arranged on the side wall of the two sliding rods 13. The side wall of the push plate 27 is fixedly connected with the output end of the electric push rod 24. The two support plates 31 are respectively fixedly arranged on the side wall of the push plate 27 away from the electric push rod 24. The impeller 28 is arranged between the two support plates 31 and is rotatably connected with both of them. The impeller 28 is at the same height as the air pipe 9. A threaded groove 32 is arranged in the impeller 28. The threaded rod 29 is arranged in the threaded groove 32. A blank rod 33 is arranged on the top of the threaded rod 29. The top of the blank rod 33 is rotatably connected with the top plate 30. The arrangement of the blank rod 33 enables the threaded rod 29 not to completely separate from the threaded groove 32. The electric push rod 24 can push the push plate 27 to the position of the air outlet pipe 7, so that the gas discharged from the gas storage tank 6 can blow the impeller 28. The rotation of the impeller 28 will drive the threaded rod 29 to rise and fall, thereby pushing the solid box 35 downward.

[0052] The threaded rod 29 is sleeved with a telescopic spring 34. One end of the telescopic spring 34 is fixedly connected with the top of the support plate 31, and the other end is fixedly connected with the bottom wall of the top plate 30. The force exerted by the telescopic spring 34 on the top plate 30 will make the threaded rod 29 and the blank rod 33 have a tendency to be always in a high position, that is, the state that the threaded rod 29 does not contact the solid box 35. The environment-friendly gas in the gas storage tank 6 will blow the impeller 28. When the gas is no longer filled, the telescopic spring 34 will drive the threaded rod 29 and the blank rod 33 to return to the original position.

[0053] Referring to Figure 5 - Figure 7, the side wall of the sealed cavity 3 is further provided with a reaction box, the reaction box is located below the air pipe 9, the reaction box is provided with pyrogallol 15 and potassium hydroxide solution 16, the reaction box includes a solid box 35 and a liquid box, the liquid box is divided into a slope part 36 and a box part 37, the slope part 36 is located at the top of the box part 37, the top and bottom of the slope part 36 are designed to be open, the top of the box part 37 is also designed to be open, the potassium hydroxide solution 16 is located in the box part 37, the shape of the solid box 35 is consistent with that of the slope part 36, the side wall of the solid box 35 is in contact with the inner wall of the slope part 36, the pyrogallol 15 is located in the solid box 35, and the solid box 35 is embedded in the slope part 36. However, since the top of the slope part 36 is designed to be open, the threaded rod 29 moving downward will push the solid box 35 downward, so that the originally sealed pyrogallol 15 can be in contact with the potassium hydroxide solution 16, and then consume the oxygen in the sealed cavity 3.

[0054] The pyrogallol is named o-benzene triol. It first undergoes a neutralization reaction with potassium hydroxide to generate potassium pyrogallate, and then the potassium pyrogallate is oxidized by oxygen to form hexa-oxy biphenyl potassium, and the reaction formula is as follows:

[0055]

[0056] The side wall of the slope part 36 is provided with a plurality of through holes 38, the inner wall of the slope part 36 is provided with two first magnetic strips 40, and the two side walls of the solid box 35 are provided with two second magnetic strips 41 at the same positions. The arrangement of the plurality of through holes 38 enables the box part 37 to better contact the air in the sealed cavity 3, facilitating the consumption of oxygen, so that the components in the sealed cavity 3 can be protected by the environment-friendly gas as much as possible, and the maintenance personnel can also be protected to a certain extent. The first magnetic strip 40 and the second magnetic strip 41 attract each other, so that the solid box 35 can be embedded in the slope part 36. The threaded rod 29 axially drives the solid box 35, and the direction of the force is different from that of the magnetic force, so that the two can be easily separated.

[0057] The side wall of the solid box 35 is provided with a rubber strip 42, the bottom of the solid box 35 is provided with a hole 43, the hole 43 is provided with a sealing paper 44, and the bottom of the box part 37 is fixedly provided with a top block 45. The top block 45 is located below the hole 43, and the side wall of the top block 45 is fixedly connected with a plurality of protruding strips 46. The arrangement of the rubber strip 42 can block the gap between the box part 37 and the slope part 36 as much as possible, thereby preventing the evaporation of the potassium hydroxide solution 16. When the solid box 35 is pushed out by the threaded rod 29, the solid box 35 will fall onto the top block 45, so that the sealing paper 44 is broken, and the pyrogallol 15 and the potassium hydroxide solution 16 are in contact. The arrangement of the protruding strips 46 can also cause the gap between the hole 43 and the top block 45, which facilitates the contact reaction between the pyrogallol 15 and the potassium hydroxide solution 16.

[0058] The working principle of the embodiment is as follows: in the initial state, the three-way electromagnetic valve 8 makes the sealed cavity 3 communicate with the sealed box 11, and the air pressure between the two is the same, the size of the warning balloon 19 corresponds to the position of the warning hole 23 at the bottom, and the gas tank 6 does not communicate with the sealed cavity 3;

[0059] When the sealed cavity 3 gradually leaks, the air pressure between the sealed cavity 3 and the sealed box 11 decreases, and the air pressure inside the warning balloon 19 will gradually be greater than the air pressure in the sealed box 11, so the size of the warning balloon 19 will gradually expand, and the workers will see the position of the warning balloon 19 gradually rising, visually filling more warning holes 23, indicating that the degree of leakage is gradually deepening;

[0060] At the same time, the expansion of the warning balloon 19 also causes the lifting plate 20 to be lifted, and the sliding of the moving rod 25 in the vertical groove 26 causes the lifting plate 20 to stably rise, and when the lifting plate 20 rises to the positions of the first toggle switch 21 and the second toggle switch 22, the first toggle switch 21 and the second toggle switch 22 are toggled;

[0061] The first toggle switch 21 causes the three-way electromagnetic valve 8 to start, causing the warning light 17 to turn on, and the workers can observe the light through the light port 18;

[0062] The start of the three-way electromagnetic valve 8 also causes the gas tank 6 to communicate with the sealed cavity, and the environment-friendly gas in the gas tank 6 will enter the sealed cavity 3 under the action of air pressure, protecting the components in the sealed cavity 3;

[0063] The second toggle switch 22 causes the electric push rod 24 to push the push plate 27, causing the sliding rod 13 to slide in the sliding groove 12, and the support plate 31 will drive the impeller 28 to the position of the air outlet pipe 7, and the environment-friendly gas entering the sealed cavity 3 through the air outlet pipe 7 will blow the impeller 28, and the rotation of the impeller 28 will cause the threaded groove 32 to rotate synchronously, and the threaded rod 29 arranged in the threaded groove 32 will be lowered, and the blank rod 33 fixedly connected thereto will drive the top plate 30 to descend together, causing the extension spring 34 to be compressed;

[0064] The downward movement of the threaded rod 29 will push the solid box 35 downward, and the first magnetic strip 40 and the second magnetic strip 41 will be separated from each other, and the falling solid box 35 will fall onto the top block 45, which will break the paper seal 44, causing the pyrogallol 15 in the solid box 35 to contact the potassium hydroxide solution 16 in the box portion 37, and the protruding strip 46 can also cause a gap between the hole 43 and the top block 45, making it easier for the pyrogallol 15 and the potassium hydroxide solution 16 to contact and react, thereby consuming the oxygen in the sealed cavity 3, and the components inside the sealed cavity 3 are better protected by the environment-friendly gas.

[0065] The above merely describes the preferred embodiments of the present application, but is not intended to limit the protection scope of the present application.

Claims

1. An environmentally friendly gas ring main unit with a gas leakage alarm function, comprising a ring main unit body (1), wherein the ring main unit body (1) includes an atmospheric pressure chamber (2) and a sealed chamber (3), wherein the sealed chamber (3) is filled with environmentally friendly sulfur hexafluoride gas, characterized in that: An emergency box (4) is installed on the side wall of the ring main unit (1). A placement slot (5) is opened on the side wall of the emergency box (4) away from the ring main unit (1). A gas storage tank (6) is installed in the placement slot (5). The gas storage tank (6) is also filled with sulfur hexafluoride. An exhaust pipe (7) is connected to the side wall of the gas storage tank (6). A cavity is opened in the emergency box (4). A three-way solenoid valve (8) is installed in the cavity. The exhaust pipe (7) passes through the side wall of the placement slot (5) and is connected to the three-way solenoid valve (8). One end of the three-way solenoid valve (8) is connected to the vent pipe (7), and the other end is equipped with a vent pipe (9). The vent pipe (9) passes through the side wall of the emergency box (4) and the side wall of the sealing cavity (3). The remaining end of the three-way solenoid valve (8) is equipped with a bend pipe (10). The end of the bend pipe (10) away from the three-way solenoid valve (8) is connected to a sealing box (11). An emergency structure is installed in the sealing box (11). The emergency structure includes a warning balloon (19), a lifting plate (20), a first toggle switch (21), and a second toggle switch (22). The warning balloon (19) is located at the bottom of the sealing box (11). The side of the sealing box (11) facing away from the three-way solenoid valve (8) is made of transparent material. The emergency box (4) has several warning holes (23) on its side wall. The warning holes (23) are enlarged from bottom to top. The position of the warning hole (23) at the bottom corresponds to the position of the warning balloon (19). The bottom of the lifting plate (20) abuts against the top of the warning balloon (19). The lifting plate (20) is slidably connected to the side wall of the sealed box (11). The first toggle switch (21) and the second toggle switch (22) are respectively set on the two side walls of the sealed box (11). The first toggle switch (21) and the second toggle switch (22) are at the same height. The two ends of the lifting plate (20) are respectively located below the first toggle switch (21) and the second toggle switch (22). The sealed cavity (3) has two parallel sliding grooves (12) on the side wall near the emergency box (4). Sliding rods (13) are slidably connected to the two sliding grooves (12). A pneumatic structure is installed on the side wall of each sliding rod (13). The pneumatic structure includes a push plate (27), an impeller (28), a threaded rod (29), a top plate (30), and two support plates (31). The push plate (27) is jointly installed on the side wall of the two sliding rods (13). The side wall of the push plate (27) is fixedly connected to the output end of the electric actuator (24). The support plates (31) are respectively fixedly installed on the side wall of the push plate (27) away from the electric push rod (24). The impeller (28) is installed between the two support plates (31) and is rotatably connected to both of them. The impeller (28) and the air pipe (9) are at the same height. The impeller (28) has a threaded groove (32). The threaded rod (29) is installed in the threaded groove (32). The top of the threaded rod (29) is provided with a blank rod (33). The top of the blank rod (33) is rotatably connected to the top plate (30). The side wall of the sealed cavity (3) is also equipped with a reaction chamber, which is located below the vent pipe (9). The reaction chamber contains pyrogallic acid (15) and potassium hydroxide solution (16). The reaction chamber includes a solid box (35) and a liquid box. The downward-moving threaded rod (29) will push the solid box (35) downward, and the originally sealed pyrogallic acid (15) can come into contact with the potassium hydroxide solution (16).

2. The environmentally friendly gas ring network cabinet with leakage alarm function according to claim 1, characterized in that, The three-way solenoid valve (8) is equipped with a warning light (17) on top, and the emergency box (4) is equipped with a light port (18) on top, which is located directly above the warning light (17).

3. The environmentally friendly gas ring network cabinet with leakage alarm function according to claim 1, characterized in that, An electric push rod (24) is installed in the sealed cavity (3). The second toggle switch (22) is electrically connected to the electric push rod (24), and the first toggle switch (21) is electrically connected to the three-way solenoid valve (8).

4. The environmentally friendly gas ring network cabinet with leakage alarm function according to claim 1, characterized in that, The lifting plate (20) has two moving rods (25) installed on its side wall, and the sealing box (11) has two vertical grooves (26) on its side wall. The two moving rods (25) are slidably connected to the inner walls of the two vertical grooves (26) respectively.

5. The environmentally friendly gas ring network cabinet with leakage alarm function according to claim 1, characterized in that, The threaded rod (29) is fitted with a telescopic spring (34), one end of which is fixedly connected to the top of the support plate (31), and the other end is fixedly connected to the bottom wall of the top plate (30).

6. The environmentally friendly gas ring main unit with leakage alarm function according to claim 1, characterized in that, The liquid tank is divided into a ramp section (36) and a tank section (37). The ramp section (36) is located at the top of the tank section (37). The top and bottom of the ramp section (36) are open. The top of the tank section (37) is also open. The potassium hydroxide solution (16) is located inside the tank section (37). The solid tank (35) has the same shape as the ramp section (36). The side wall of the solid tank (35) abuts against the inner wall of the ramp section (36). The pyrogallol (15) is located inside the solid tank (35).

7. The environmentally friendly gas ring network cabinet with leakage alarm function according to claim 6, characterized in that, The slope portion (36) has several through holes (38) on its side wall, and two first magnetic strips (40) are installed on the inner wall of the slope portion (36). Two second magnetic strips (41) are installed at the same position on both sides of the solid box (35).

8. The environmentally friendly gas ring main unit with leakage alarm function according to claim 6, characterized in that, The solid box (35) has a rubber strip (42) installed on its side wall. The solid box (35) has a hole (43) at its bottom. A sealing paper (44) is installed in the hole (43). A top block (45) is fixedly installed at the bottom of the box (37). The top block (45) is located below the hole (43). Several protruding strips (46) are fixedly connected to the side wall of the top block (45).

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