An environmentally friendly gas-insulated ring network switchgear capable of automatically replenishing gas

Abstract

An environmentally friendly gas insulated ring network switchgear capable of automatically replenishing gas comprises a cabinet body and a gas box arranged in the cabinet body, the gas box having a main chamber for storing environmentally friendly gas for conventional use and a spare chamber for storing spare environmentally friendly gas, a one-way valve being arranged between the main chamber and the spare chamber, and also comprising a path switcher, an air pump, an accelerator, and a control system for real-time monitoring of the environmentally friendly gas concentration and the volume of the environmentally friendly gas inside the cabinet body, and controlling the path switcher to switch the gas path according to the monitored data, and controlling the accelerator to start. The beneficial effect of the present invention is that it has two modes of conventional gas circulation flow and accelerated gas flow, and the accelerated gas flow occurs when SF6 environmentally friendly gas needs to be replenished, which is determined according to the concentration and volume of SF6 environmentally friendly gas, and can ensure the safe operation of the equipment under high voltage by timely replenishing gas, reduce the occurrence of faults and power outages, and can also extend the gas replenishment maintenance cycle.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, in particular to an environmentally friendly gas-insulated ring network switchgear capable of automatically replenishing gas. Background Art

[0002] The breakdown voltage of SF6 environmentally friendly gas is 2.5 to 3 times that of air at the same gas pressure, and its arc extinguishing ability is 100 times that of air. At 4 atmospheres, its dielectric strength is equivalent to that of transformer oil. SF6 environmentally friendly gas has good insulation properties and excellent arc extinguishing performance and is widely used in electrical equipment, such as ring network switchgear.

[0003] Publication (Announcement) No.: CN118089853B discloses an online detection system and method for environmental protection gas in a ring main unit, including a sensor module, a data acquisition and preprocessing unit, a data processing and analysis unit, a cloud platform and a cabinet control terminal; the sensor module is equipped with an environmental protection gas sensor and a temperature sensor, which is responsible for real-time monitoring of the environmental protection gas concentration and temperature inside the ring main unit, and transmitting the collected data to the data acquisition and preprocessing unit; the data acquisition and preprocessing unit is connected to an adaptive network communication module, preprocesses the sensor data, and sends the preprocessed data to the adaptive network communication module; the adaptive network communication module is based on The communication mode is intelligently selected according to environmental conditions and data requirements; the data processing and analysis unit is responsible for receiving and processing data from the adaptive network communication module, monitoring and analyzing the environmental gas concentration, and triggering the corresponding alarm signal; the cloud platform realizes remote monitoring and data storage, and has built-in Web and mobile applications to view the environmental gas concentration, temperature and alarm status inside the ring network cabinet in real time for remote monitoring and management; the cabinet control terminal is placed inside the cabinet, with a built-in control interface, and real-time viewing of the environmental gas concentration, temperature and alarm status inside the ring network cabinet, to achieve historical data analysis and reporting; the sensor module is integrated in the adjustable sensor monitoring device. This method is used to monitor the concentration of gas. The ring network switchgear is used frequently and has a long operating time. SF6 environmental gas will gradually decompose or degrade, which will cause its concentration to decrease (performance degradation). After the concentration decreases, only early warning means such as alarms can be issued as a reminder, and emergency gas replenishment cannot be made for the concentration decrease. Users need to change the gas as soon as possible after receiving the reminder signal. Summary of the invention

[0004] The present invention aims to solve the above-mentioned shortcomings of the prior art and provide an environmentally friendly gas-insulated ring network switchgear capable of automatically replenishing gas to solve the above-mentioned problems.

[0005] The present invention solves the technical problem by adopting a technical solution: the environmentally friendly gas insulated ring network switchgear capable of automatically replenishing gas comprises a cabinet body and a gas box arranged in the cabinet body, the gas box has a main chamber for storing conventionally used environmentally friendly gas and a spare chamber for storing spare environmentally friendly gas, a one-way valve is arranged between the main chamber and the spare chamber, and also comprises

[0006] A path switcher is connected to the main chamber and allows the environmentally friendly gas entering the path switcher to be directly discharged into the cabinet or transported to a component that can accelerate the flow speed of the environmentally friendly gas by switching the gas path; and

[0007] An air pump having two ends, one of which has an air suction end connected to the main cavity and an air outlet end connected to the path switcher, so that the environmentally friendly gas in the main cavity enters the path switcher under the action of the air pump, and the other air pump has an air outlet end connected to the main cavity and an air suction end used to extract the environmentally friendly gas placed in the cabinet to realize the circulation of the environmentally friendly gas in the main cavity and the cabinet; and

[0008] An accelerator, the accelerator is connected to the path switcher, so that the flow rate of the environmentally friendly gas entering the cabinet can be increased under the action of the accelerator; and

[0009] The control system is used to monitor the environmental gas concentration and volume inside the cabinet in real time, and control the path switcher to switch the gas path according to the monitored data, so that the environmental gas entering the path switcher can be directly discharged into the cabinet or transported to the accelerator, and control the start of the accelerator. When the gas concentration or volume of the environmental gas is less than the preset value, the control system controls the one-way valve to open so that the environmental gas placed in the spare chamber can enter the main chamber.

[0010] Further improvement, the path switcher includes a switcher housing and a switching member, the switcher housing has a preparatory chamber, a first air chamber, and a second air chamber, the preparatory chamber is used to receive the environmentally friendly gas delivered by the air pump and communicate with the first air chamber and the second air chamber, and allows the environmentally friendly gas placed in the preparatory chamber to enter the first air chamber or the second air chamber through the switching member, the switching member includes a first blocking block, a second blocking block, and a connecting rod, the first blocking block is located in the first air chamber, the second blocking block is located in the second air chamber, and the first blocking block and the second blocking block are both provided with a first air passage allowing the environmentally friendly gas to pass through.

[0011] Further improvement, the accelerator includes an accelerator housing, and an air inlet joint, a first push part, and two second push parts arranged in the accelerator housing. The air inlet end of the air inlet joint is exposed outside the accelerator housing and connected to the air outlet end of the second air cavity. A part of the environmentally friendly gas enters the acceleration station of the accelerator housing, and the other part enters the driving station of the accelerator housing. The first push part and the second push part can both move in the accelerator housing. The first push part is used as a transmission component and an acceleration component at the same time. It transports a part of the environmentally friendly gas to the acceleration station, and through its own movement, the first push part can transfer a part of the environmentally friendly gas to the acceleration station. The thrust for increasing the flow velocity of the environmental protection gas is generated in the acceleration station, wherein a second push portion is used as a blocking component for blocking the air inlet end of the driving station, and blocks the air inlet end of the driving station after a part of the environmental protection gas enters the driving station, and the environmental protection gas entering the driving station is used as kinetic energy to drive the first push portion to reset, wherein another second push portion is used as a blocking component for blocking the air outlet end of the driving station, and releases the blockage of the air outlet end after the environmental protection gas in the driving station completes the driving work, and the environmental protection gas is guided to the acceleration station after leaving the driving station.

[0012] For further improvement, a first movable cavity for the first pushing part to move therein and a second movable cavity for the second pushing part to move therein are formed in the accelerator housing, a driving station and an acceleration station are formed in the first movable cavity, a second air passage formed in the accelerator housing is provided between the second movable cavity and the driving station of the first movable cavity, and a third air passage formed in the accelerator housing is provided between another second movable cavity and the acceleration station of the first movable cavity.

[0013] Further improvement, the first movable chamber includes a preparation section, a driving section used as a driving station, and an acceleration section used as an acceleration station. The preparation section is used to receive the environmentally friendly gas delivered by the air inlet joint, and it has two air outlet ends on the accelerator housing, one of which guides the environmentally friendly gas into the first push part, and delivers the environmentally friendly gas to the acceleration section through the first push part, and the other air outlet end guides the environmentally friendly gas into the second air passage, and guides the environmentally friendly gas to the driving section through the second air passage.

[0014] To be further improved, the first push part includes a first push rod with a configuration matching the first movable cavity, and a mounting groove and a fourth air passage formed in the first push rod, a mounting seat with a fifth air passage is provided in the mounting groove, a blocking block that can move in the large-diameter channel of the driving section and the fifth air passage is provided in the mounting seat, an environmentally friendly gas seal or a gap for environmentally friendly gas to pass through is formed between the blocking block and the large-diameter channel of the fifth air passage, a first spring that can undergo compression deformation or reset deformation as the blocking block moves is provided between the driving section and the blocking block, and a second spring that can undergo compression deformation or reset deformation as the first push rod moves is provided between the acceleration section and the first push rod.

[0015] Further improvement, the second movable cavity includes an installation section and a channel section, the installation section is for the second push part to be placed inside, the channel section provides a movement guide for the second push part, one channel section is interconnected with the second air outlet channel, and the other channel section is interconnected with the third air outlet channel.

[0016] To be further improved, the second push portion includes a closed joint and a second push rod. The closed joint is placed in the mounting section and has a guide groove for the second push rod to move in. The second push rod includes an abutment section and a moving section. The abutment section is placed in the guide groove. The moving section moves in the moving section and has a blocking protrusion. The blocking protrusion is used to block the air inlet end of the driving section or the air outlet end of the acceleration section. A third spring is provided between the abutment section and the mounting section, which can undergo compression deformation or return deformation as the second push rod moves.

[0017] To be further improved, the control system includes a human-computer interaction module, a drive module, a motion control module, and a sensor module. The human-computer interaction module is electrically connected to the drive module, the drive module is electrically connected to the motion control module and the sensor module, and the motion control module is electrically connected to the path switcher and the accelerator.

[0018] Further improvement, the motion control module includes a parameter acquisition unit and an execution control unit. The parameter acquisition unit is used to obtain the gas concentration and gas volume inside the cabinet fed back by the sensor module. The execution control unit is used to form a control instruction according to the data obtained by the parameter acquisition unit, and control the gas acceleration realized by the path switcher and the accelerator according to the control instruction.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention has two modes: conventional gas circulation flow and accelerated gas flow. Accelerated gas flow occurs when SF6 environmental protection gas needs to be supplemented. The operation mode is determined according to the gas concentration and gas volume of SF6 environmental protection gas. The invention can ensure the safe operation of the equipment under high voltage by timely gas replenishment, reduce the occurrence of faults and power outages, and extend the gas replenishment maintenance cycle.

[0021] 2. The present invention forms two paths through a path switch, one for gas to pass through during normal gas circulation, and the other for gas to pass through during accelerated gas flow, and only one of the two paths can be selected;

[0022] 3. The present invention realizes accelerated gas flow through an accelerator, so as to quickly replenish the volume of gas in the device through the accelerated gas flow, and can also realize rapid fusion of low-concentration gas and high-concentration gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the air box, air pump, path switch and accelerator in the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the path switch of the present invention, used to show one of the use states of the path switch;

[0026] Figure 4 It is a schematic diagram of the structure of the path switch of the present invention, used to show another use state of the path switch;

[0027] Figure 5 It is a structural schematic diagram of the accelerator of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the accelerator housing of the present invention;

[0029] Figure 7 It is a schematic diagram of the principle structure of the control system of the present invention.

[0030] Description of the accompanying drawings: cabinet 1, air box 2, path switch 3, switch housing 31, preparatory chamber 311, first air outlet chamber 312, and second air outlet chamber 313, switching member 32, first blocking block 321, second blocking block 322, connecting rod 323, first air outlet passage 324, air pump 4, accelerator 5, accelerator housing 51, first movable chamber 511, preparatory section 5111, driving section 5112, acceleration section 5113, second movable chamber 512, installation section 5121, channel section 5122, second air outlet passage 513, third air outlet passage Channel 514, air intake connector 52, first push portion 53, first push rod 531, mounting groove 5311, fourth air outlet channel 5312, mounting seat 532, fifth air outlet channel 5321, blocking block 5322, second push portion 54, closing connector 541, second push rod 542, abutting section 5421, moving section 5422, blocking protrusion 54221, control system 6, human-computer interaction module 61, driving module 62, motion control module 63, parameter acquisition unit 631, sensor module 64, first spring 7, second spring 8, third spring 9. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings:

[0032] Referring to the attached drawings: This environmentally friendly gas insulated ring network switchgear capable of automatically replenishing gas comprises a cabinet 1 and a gas box 2 arranged in the cabinet 1, wherein the gas box 2 has a main chamber for storing conventional environmentally friendly gas and a spare chamber for storing spare environmentally friendly gas, a one-way valve is arranged between the main chamber and the spare chamber, and further comprises

[0033] A path switcher 3, which is connected to the main chamber and allows the environmentally friendly gas entering the path switcher 3 to be directly discharged into the cabinet 1 or transported to a component that can accelerate the flow speed of the environmentally friendly gas by switching the gas path; and

[0034] The air pump 4 has two parts, wherein the air pump 4 has an air suction end connected to the main cavity and an air outlet end connected to the path switcher 3, so that the environmentally friendly gas in the main cavity enters the path switcher 3 under the action of the air pump 4, and the air outlet end of the other air pump 4 is connected to the main cavity, and the air suction end is used to extract the environmentally friendly gas placed in the cabinet 1 to realize the circulation of the environmentally friendly gas in the main cavity and the cabinet 1; and

[0035] An accelerator 5, which is connected to the path switch 3, so that the flow rate of the environmentally friendly gas entering the cabinet 1 can be increased under the action of the accelerator 5; and

[0036] The control system 6 is used to monitor the environmental gas concentration and volume inside the cabinet 1 in real time, and control the path switcher 3 to switch the gas path according to the monitored data, so that the environmental gas entering the path switcher 3 can be directly discharged into the cabinet 1 or transported to the accelerator 5, and control the accelerator 5 to start. When the gas concentration or volume of the environmental gas is less than the preset value, the control system 6 controls the one-way valve to open so that the environmental gas placed in the spare chamber can enter the main chamber. The principle of the present invention is that there is SF6 environmental gas inside the cabinet 1, and SF6 environmental gas has good insulation performance and excellent arc extinguishing performance, which can ensure the safe operation of the equipment under high voltage and reduce the occurrence of faults and power outages;

[0037] The gas box 2 is used to store SF6 environmentally friendly gas, and realizes internal circulation flow through two gas pumps 4, so that the volume and concentration of SF6 environmentally friendly gas inside the cabinet 1 can be guaranteed. However, considering that SF6 environmentally friendly gas is a consumable, the concentration and volume of SF6 environmentally friendly gas after repeated circulation (inside the main chamber or cabinet 1) will decrease, so it is necessary to replenish new gas in time to ensure the concentration and volume of SF6 environmentally friendly gas, that is, the inner cavity of the gas box 2 is divided into a main cavity and a spare cavity. The main cavity is used to store SF6 environmentally friendly gas for conventional use (for recycling), and the spare cavity is used to store new SF6 environmentally friendly gas. A one-way valve is provided between the two. When new SF6 environmentally friendly gas needs to be transferred, only the one-way valve needs to be opened to realize the fusion of new and old gases. In this way, the device has the function of self-gas replenishment, which can extend the gas replenishment maintenance cycle;

[0038] The circulation of SF6 environmental protection gas in the gas box 2 and the cabinet 1 is realized by two air pumps 4. One air pump 4 is used to extract SF6 environmental protection gas in the cabinet 1, and the other air pump 4 is used to extract SF6 environmental protection gas in the main chamber of the gas box 2. The control system 6 plays a monitoring role on the one hand, and obtains the concentration and volume of environmental protection gas through monitoring, and compares the collected data with the preset data value. On the other hand, it plays a control role. When the collected data is lower than the preset data value (low volume), the control system 6 controls the path switcher 3 to switch the gas path, and the path for circulating gas is closed, and the path connected to the accelerator 5 to guide the SF6 environmental protection gas to the accelerator 5 is opened. The accelerator 5 is also started at the same time to accelerate the flow speed of SF6 environmental protection gas, and the one-way valve is not opened; when the collected data is lower than the preset data value (low concentration or low concentration and volume), the one-way valve is opened, so that the new gas in the spare chamber is replenished in time, so as to ensure the concentration and volume of environmental protection gas, and also ensure the safe operation of the equipment under high voltage, and the accelerator 5 improves the gas replenishment efficiency.

[0039] The path switcher 3 includes a switcher housing 31 and a switching member 32. The switcher housing 31 has a preparatory chamber 311, a first air outlet chamber 312, and a second air outlet chamber 313. The preparatory chamber 311 is used to receive the environmentally friendly gas delivered by the air pump 4 and communicate with the first air outlet chamber 312 and the second air outlet chamber 313, and allows the environmentally friendly gas placed in the preparatory chamber 311 to enter the first air outlet chamber 312 or the second air outlet chamber 313 through the switching member 32. The switching member 32 includes a first blocking block 321, a second blocking block 322, and a connecting rod 323. The first blocking block 321 is located in the first air outlet chamber 312, and the second blocking block 322 is located in the second air outlet chamber 313. The first blocking block 321 and the second blocking block 322 are both provided with a first air outlet passage 324 that allows the environmentally friendly gas to pass through. Such a setting can obtain two independent The air paths are independent and switchable, and the switching of the paths can be achieved by moving the switching member 32. The circulating air path is formed by the first air cavity 312 and the first air passage 324 of the first blocking block 321, and the accelerated air path is formed by the second air cavity 313 and the first air passage 324 of the second blocking block 322. Each path can only be selected for use, that is, the air inlet and air outlet ends of the first air cavity 312 are positioned to the left, and the air inlet and air outlet ends of the second air cavity 313 are positioned to the right. The distance between the first blocking block 321 and the second blocking block 322 is smaller than the distance between the air inlet and air outlet ends of the two air cavities. When the first blocking block 321 is in the "open" state, the second blocking block 322 is in the "blocked" state, and vice versa, the state is switched. When ventilation occurs, it is only necessary to match the first air passage 324 with the positions of the air inlet and air outlet ends.

[0040] The accelerator 5 includes an accelerator housing 51, an air inlet connector 52, a first pusher 53, and two second pushers 54 arranged in the accelerator housing 51. The air inlet end of the air inlet connector 52 is exposed outside the accelerator housing 51 and connected to the air outlet end of the second air cavity 313. A part of the environmentally friendly gas enters the acceleration station of the accelerator housing 51, and the other part enters the driving station of the accelerator housing 51. The first pusher 53 and the second pusher 54 can both move in the accelerator housing 51. The first pusher 53 is used as a transmission component and an acceleration component at the same time. It transmits a part of the environmentally friendly gas to the accelerator housing 51. It is sent to the acceleration station, and generates a thrust to increase the flow speed of the environmental protection gas in the acceleration station through its own movement, wherein a second push portion 54 is used as a blocking component for blocking the air inlet end of the driving station, and blocks the air inlet end of the driving station after a part of the environmental protection gas enters the driving station, and the environmental protection gas entering the driving station is used as the kinetic energy to drive the first push portion 53 to reset and move, wherein another second push portion 54 is used as a blocking component for blocking the air outlet end of the driving station, and releases the blockage of the air outlet end after the environmental protection gas located in the driving station completes the driving work, and the environmental protection gas leaves the driving station. The SF6 environmentally friendly gas is guided to the acceleration station after the first push part 53 leaves the driving station. Such an arrangement enables the SF6 environmentally friendly gas to be used as both an arc extinguishing medium and a power medium. When used as a power medium, the SF6 environmentally friendly gas is transported to the driving station. As the volume of the SF6 environmentally friendly gas in the driving station increases, a reset thrust is generated. The reset thrust drives the first push part 53 to reset and move (the space provided by the driving station is increased by the reset movement). After the SF6 environmentally friendly gas in the driving station leaves, the reset thrust disappears. The air intake of the air intake joint 52 can generate a thrust to drive the first push part 53 to move. Under the action of this thrust, the SF6 environmentally friendly gas in the acceleration station is pushed to the outside of the accelerator housing 51, so as to increase the flow speed of the SF6 environmentally friendly gas. Such a configuration makes it possible for the first push part 5 to move without the aid of additional power components, and only the SF6 environmentally friendly gas can move. The two second push parts 54 are used as blocking components, respectively used to block the air inlet and air outlet of the driving station, and one of them is selectively blocked. When the SF6 environmentally friendly gas enters the driving station, the air inlet is not blocked and the air outlet is blocked. Conversely, when the SF6 environmentally friendly gas leaves the driving station, the air inlet is blocked and the air outlet is not blocked.

[0041] The accelerator housing 51 is formed with a first movable chamber 511 for the first push part 53 to move therein, and a second movable chamber 512 for the second push part 54 to move therein. The driving station and the acceleration station are formed in the first movable chamber 511, wherein a second air passage 513 formed in the accelerator housing 51 is provided between the second movable chamber 512 and the driving station of the first movable chamber 511, wherein a third air passage 514 formed in the accelerator housing 51 is provided between another second movable chamber 512 and the acceleration station of the first movable chamber 511. Such an arrangement enables the accelerator to The interior of the speed reducer housing 51 can provide a moving guide for the first push part 53 and the second push part 54, and the driving station and the acceleration station are simultaneously formed in the first moving chamber 511, so that the first push part 53 can not only provide acceleration for the SF6 environmentally friendly gas, but also use the SF6 environmentally friendly gas as a power medium. The second gas passage 513 is used to transport a part of the SF6 environmentally friendly gas delivered by the air inlet connector 52 to the driving station, and the third gas passage 514 is used to transport the gas in the driving station to the acceleration station, which can increase the volume of the accelerated gas.

[0042] The first movable chamber 511 includes a preparation section 5111, a driving section 5112 used as a driving station, and an acceleration section 5113 used as an acceleration station. The preparation section 5111 is used to receive the environmentally friendly gas delivered by the air inlet joint 52. It has two air outlets in the accelerator housing 51, one of which guides the environmentally friendly gas into the first push portion 53, and delivers the environmentally friendly gas to the acceleration section 5113 through the first push portion 53, and the other air outlet guides the environmentally friendly gas into the second air passage 513, and guides the environmentally friendly gas to the driving station through the second air passage 513. In the moving section 5112, the first moving cavity 511 utilizes multiple sections with different inner diameter sizes to form a preparation section 5111, a driving section 5112, and an acceleration section 5113. The preparation section 5111 has the largest inner diameter, the driving section 5112 has the second largest inner diameter, and the acceleration section 5113 has the smallest inner diameter. By utilizing the size difference, the portion of the first pushing portion 53 located in the driving section 5112 can push the SF6 environmentally friendly gas located in the driving section 5112, and the portion of the first pushing portion 53 located in the acceleration section 5113 can push the SF6 environmentally friendly gas located in the acceleration section 5113.

[0043] The first push portion 53 includes a first push rod 531 whose configuration matches the first movable cavity 511, and a mounting groove 5311 and a fourth air passage 5312 formed in the first push rod 531, a mounting seat 532 with a fifth air passage 5321 is arranged in the mounting groove 5311, a blocking block 5322 that can move in the large-diameter channel of the driving section 5112 and the fifth air passage 5321 is arranged in the mounting seat 532, an environmentally friendly gas seal or a gap for environmentally friendly gas to pass through is formed between the blocking block 5322 and the large-diameter channel of the fifth air passage 5321, and a first gas seal that can be compressed and deformed or reset as the blocking block 5322 moves is arranged between the driving section 5112 and the blocking block 5322. The spring 7 is provided between the acceleration section 5113 and the first push rod 531. A second spring 8 is provided which can be compressed and deformed or reset and deformed as the first push rod 531 moves. The first push rod 531 forms an air path inside thereof which can transport the gas to the acceleration section 5113 through the fourth air passage 5312. The mounting groove 5311 which communicates with the fourth air passage 5312 is used to set a mounting seat 532 which is used as a blocking component. The mounting seat 532 has a fifth air passage 5321 which guides the gas to the fourth air passage 5312, and a blocking block 5322. The blocking block 5322 blocks the air outlet end of the fifth air passage 5321. The lower end of the blocking block 5322 is provided with the first spring 7. In the non-intake stage, the gas outlet end of the fifth gas passage 5321 is always blocked. When air is taken in, the blocking block 5322 is pushed open by the gas thrust, and then enters the fourth gas passage 5312 through the gap formed by the blocking block 5322 and the large-diameter channel of the fifth gas passage 5321. The SF6 environmental protection gas acts on the blocking block 5322, which can not only open the blocking block 5322, but also convert the gas power into the moving power to drive the first push rod 531 under the combination of the first spring 7. The first spring 7 restores the blockage of the blocking block 5322 when the gas no longer enters. The second spring 8, on the one hand, is used to open the SF6 environmental protection gas in the driving section 5112 when it is exhausted or nearly exhausted. During the inflation stage (part of the gas is diverted to the second air passage 513), the first push rod 531 is pushed to move in the reverse direction of reset, so as to quickly obtain the driving section 5112 while preventing the first push rod 531 from blocking the air inlet end of the driving section 5112. On the other hand, kinetic energy complementation is formed with the SF6 environmentally friendly gas in the driving section 5112, which can make up for the defect that the first push rod 531 cannot be driven to fully reset or close to fully reset when the SF6 environmentally friendly gas in the driving section 5112 is not yet full. In this way, there is no need to wait until the SF6 environmentally friendly gas in the driving section 5112 is fully filled, thereby increasing the frequency of use of the first push rod 531 and avoiding the acceleration of the SF6 environmentally friendly gas due to intermediate interruptions.

[0044] The second movable cavity 512 includes a mounting section 5121 and a channel section 5122. The mounting section 5121 is for the second push portion 54 to be placed inside, and the channel section 5122 provides a moving guide for the second push portion 54. One channel section 5122 is connected to the second air passage 513, and the other channel section 5122 is connected to the third air passage 514. The mounting section 5121 plays a mounting role, so that the second push portion 54 can stably exist in the accelerator housing 51. The channel section 5122 is connected to the second air passage 513 or the third air passage 514, and can provide a clear guiding direction for the second push portion 54, so that the second push portion 54 can accurately act on the part of the second air passage 513 connected to the air inlet end of the driving section 5112 or on the part of the third air passage 514 connected to the air outlet end of the driving section 5112, so as to achieve the blocking or non-blocking of the connected parts by the second push portion 54.

[0045] The second push portion 54 includes a closed joint 541 and a second push rod 542. The closed joint 541 is placed in the mounting section 5121 and has a guide groove 5411 for the second push rod 542 to move therein. The second push rod 542 includes an abutting section 5421 and a moving section 5422. The abutting section 5421 is placed in the guide groove 5411. The moving section 5422 moves in the channel section 5122 and has a blocking protrusion 54221. The blocking protrusion 54221 is used to block the air inlet end of the driving section 5112 or the air outlet end of the acceleration section 5113. A third spring 9 is provided between the abutting section 5421 and the mounting section 5121. The third spring 9 can be compressed and deformed or reset as the second push rod 542 moves. The closed joint 541 is used to push the second push portion 54 It is stably arranged in the installation section 5121 to realize the assembly connection between the second push portion 54 and the accelerator housing 51. The second push rod 542 realizes blocking or unblocking by moving, and its movement is controlled by electromagnetic, that is, an electromagnetic coil is arranged in the closed joint 541, and the electromagnetic coil can drive the second push rod 542 to move away from the driving section 5112 through magnetic force after being energized. The abutment section 5421 of the second push rod 542 is used to abut with the third spring 9, so that when the second push rod 542 moves away from the driving section 5112, the third spring 9 also undergoes corresponding compression deformation. In this way, after the electromagnetic coil is powered off, the second push rod 542 moves toward the driving section 5112 under the resetting effect of the third spring 9 and restores the blocking state.

[0046] The control system 6 includes a human-computer interaction module 61, a driving module 62, a motion control module 63, and a sensor module 64. The human-computer interaction module 61 is electrically connected to the driving module 62, the driving module 62 is electrically connected to the motion control module 63 and the sensor module 64, and the motion control module 63 is electrically connected to the path switcher 3 and the accelerator 5. By setting a preset value in the human-computer interaction module 61, the preset value is a gas concentration preset value and a gas volume preset value, and the preset value is sent to the driving module 62 through RS232 communication; the driving module 62 is electrically connected to the motion control module 63 and the sensor module 64, and the driving module sends the preset value, as well as the gas concentration data and gas volume data collected by the sensor module 64 to the motion control module 63, and the parameter acquisition unit 631 of the motion control module 63 acquires the data to form a control instruction, and the execution control unit 632 is used to form a control instruction according to the data acquired by the parameter acquisition unit 631, and control the gas realized by the path switcher 3 and the accelerator 5 according to the control instruction. Acceleration, that is, the path switcher 3 is used to switch the gas path, so that the SF6 environmental protection gas enters the second gas cavity 313, and enters the accelerator 5 from the second gas cavity 313. The second push part 54 acting on the inlet end of the driving section 5112 in the accelerator 5 is not blocked, and the second push part 54 acting on the outlet end of the driving section 5112 is blocked, so that the driving section 5112 is sequentially inflated. After being filled, the second push part 54 acting on the inlet end of the driving section 5112 is blocked, and the second push part 54 acting on the outlet end of the driving section 5112 is blocked. 54 is not blocked. With the loss of SF6 environmental protection gas in the driving section 5112, the intensity of SF6 environmental protection gas acting on the blocking block 5322 increases, the blocking block 5322 is opened, and the SF6 environmental protection gas quickly passes through and enters the acceleration section 5113. The SF6 environmental protection gas leaving the driving section 5112 also enters the acceleration section 5113, and the first push rod 531 also moves immediately. The movement of the first push rod 531 increases the flow speed of the SF6 environmental protection gas in the acceleration section 5113.

[0047] Although the invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An environmentally friendly gas-insulated ring network switchgear capable of automatically replenishing gas, comprising a cabinet (1), and a gas box (2) arranged in the cabinet (1), the gas box (2) having a main chamber for storing environmentally friendly gas for conventional use, and a spare chamber for storing spare environmentally friendly gas, a one-way valve being arranged between the main chamber and the spare chamber, characterized in that: Also includes A path switcher (3), the path switcher (3) being in communication with the main chamber and allowing the environmentally friendly gas entering the path switcher (3) to be directly discharged into the cabinet (1) or transported to a component that can accelerate the flow speed of the environmentally friendly gas by switching the gas path; and An air pump (4), comprising two air pumps, wherein the air pump (4) has an air suction end in communication with the main chamber and an air outlet end in communication with the path switch (3), so that the environmentally friendly gas in the main chamber enters the path switch (3) under the action of the air pump (4), and the air outlet end of the other air pump (4) is in communication with the main chamber and the air suction end is used to extract the environmentally friendly gas placed in the cabinet (1) so as to realize the environmentally friendly gas circulating in the main chamber and inside the cabinet (1); and An accelerator (5), the accelerator (5) being in communication with the path switch (3), so that the flow rate of the environmentally friendly gas entering the interior of the cabinet (1) can be increased under the action of the accelerator (5); as well as The control system (6) is used to monitor the concentration and volume of the environmentally friendly gas inside the cabinet (1) in real time, and control the path switcher (3) to switch the gas path according to the monitored data, so that the environmentally friendly gas entering the path switcher (3) can be directly discharged into the cabinet (1) or transported to the accelerator (5), and control the accelerator (5) to start. When the gas concentration or volume of the environmentally friendly gas is less than a preset value, the control system (6) controls the one-way valve to open so that the environmentally friendly gas placed in the spare chamber enters the main chamber.

2. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 1 is characterized in that: The path switch (3) comprises a switch housing (31) and a switching member (32); the switch housing (31) has a preparation chamber (311), a first air outlet chamber (312), and a second air outlet chamber (313); the preparation chamber (311) is used to receive the environmentally friendly gas delivered by the air pump (4) and is interconnected with the first air outlet chamber (312) and the second air outlet chamber (313), and allows the environmentally friendly gas placed in the preparation chamber (311) to enter the air pump (4) through the switching member (32). To the first air outlet cavity (312) or the second air outlet cavity (313), the switching member (32) comprises a first blocking block (321), a second blocking block (322), and a connecting rod (323), the first blocking block (321) is located in the first air outlet cavity (312), the second blocking block (322) is located in the second air outlet cavity (313), and the first blocking block (321) and the second blocking block (322) are both provided with a first air outlet channel (324) allowing environmentally friendly gas to pass through.

3. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 2 is characterized in that: The accelerator (5) comprises an accelerator housing (51), an air inlet connector (52), a first push part (53), and two second push parts (54) arranged in the accelerator housing (51); the air inlet end of the air inlet connector (52) is exposed outside the accelerator housing (51) and is connected to the air outlet end of the second air cavity (313); part of the environmentally friendly gas entering the accelerator housing (51) enters the acceleration station, and the other part enters the driving station of the accelerator housing (51); the first push part (53) and the second push part (54) are both movable in the accelerator housing (51); the first push part (53) is used as a transmission component and an acceleration component at the same time, and it transfers part of the environmentally friendly gas to the accelerator housing (51); The gas is transported to the acceleration station, and through its own movement, a thrust is generated in the acceleration station to increase the flow speed of the environmentally friendly gas, wherein one of the second push parts (54) is used as a blocking component for blocking the air inlet end of the driving station, and blocks the air inlet end of the driving station after a part of the environmentally friendly gas enters the driving station, and the environmentally friendly gas entering the driving station is used as kinetic energy to drive the first push part (53) to reset and move, wherein another second push part (54) is used as a blocking component for blocking the air outlet end of the driving station, and releases the blockage of the air outlet end after the environmentally friendly gas in the driving station completes the driving work, and the environmentally friendly gas is guided to the acceleration station after leaving the driving station.

4. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 3 is characterized in that: A first movable chamber (511) for the first pushing part (53) to move therein and a second movable chamber (512) for the second pushing part (54) to move therein are formed in the accelerator housing (51); the driving station and the acceleration station are formed in the first movable chamber (511); a second air passage (513) formed in the accelerator housing (51) is provided between one of the second movable chambers (512) and the driving station of the first movable chamber (511); and a third air passage (514) formed in the accelerator housing (51) is provided between another of the second movable chambers (512) and the acceleration station of the first movable chamber (511).

5. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 4 is characterized in that: The first movable chamber (511) comprises a preparation section (5111), a driving section (5112) used as the driving station, and an acceleration section (5113) used as the acceleration station. The preparation section (5111) is used to receive the environmentally friendly gas delivered by the air inlet joint (52), and has two air outlet ends in the accelerator housing (51), one of which guides the environmentally friendly gas into the first push part (53) and delivers the environmentally friendly gas to the acceleration section (5113) through the first push part (53), and the other of which guides the environmentally friendly gas into the second air passage (513) and guides the environmentally friendly gas into the driving section (5112) through the second air passage (513).

6. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 5 is characterized in that: The first push portion (53) comprises a first push rod (531) having a configuration matching the first movable cavity (511), and a mounting groove (5311) and a fourth air passage (5312) formed in the first push rod (531); a mounting seat (532) having a fifth air passage (5321) is arranged in the mounting groove (5311); a blocking block (5322) movable in the large-diameter channels of the driving section (5112) and the fifth air passage (5321) is arranged in the mounting seat (532); A gap for sealing environmentally friendly gas or for allowing environmentally friendly gas to pass is formed between the blocking block (5322) and the large-diameter channel of the fifth air passage (5321); a first spring (7) is provided between the driving section (5112) and the blocking block (5322), and can be compressed or reset deformed as the blocking block (5322) moves; and a second spring (8) is provided between the acceleration section (5113) and the first push rod (531), and can be compressed or reset deformed as the first push rod (531) moves.

7. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 6 is characterized in that: The second movable chamber (512) comprises a mounting section (5121) and a channel section (5122), wherein the mounting section (5121) is for the second push portion (54) to be placed therein, and the channel section (5122) provides a movement guide for the second push portion (54), wherein one of the channel sections (5122) is in communication with the second air outlet channel (513), and wherein another of the channel sections (5122) is in communication with the third air outlet channel (514).

8. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 7 is characterized in that: The second push portion (54) comprises a closed joint (541) and a second push rod (542); the closed joint (541) is disposed in the mounting section (5121) and has a guide groove (5411) for the second push rod (542) to move therein; the second push rod (542) comprises an abutting section (5421) and a moving section (5422); the abutting section (5421) is disposed in the guide groove (5411); the moving section (5422) moves in the channel section (5122) and has a blocking protrusion (54221); the blocking protrusion (54221) is used to block the air inlet end of the driving section (5112) or the air outlet end of the acceleration section (5113); and a third spring (9) is provided between the abutting section (5421) and the mounting section (5121) and can undergo compression deformation or return deformation as the second push rod (542) moves.

9. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 8 is characterized in that: The control system (6) comprises a human-machine interaction module (61), a drive module (62), a motion control module (63), and a sensor module (64); the human-machine interaction module (61) is electrically connected to the drive module (62); the drive module (62) is electrically connected to the motion control module (63) and the sensor module (64); and the motion control module (63) is electrically connected to the path switcher (3) and the accelerator (5).

10. The environmentally friendly gas-insulated ring network switchgear capable of automatic gas replenishment according to claim 9, characterized in that: The motion control module (63) comprises a parameter acquisition unit (631) and an execution control unit (632), wherein the parameter acquisition unit (631) is used to acquire the gas concentration and gas volume inside the cabinet (1) fed back by the sensor module (64), and the execution control unit (632) is used to form a control instruction based on the data acquired by the parameter acquisition unit (631), and control the gas acceleration achieved by the path switcher (3) and the accelerator (5) based on the control instruction.

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