An environmentally friendly alternative mixed gas purification treatment device and method

Abstract

The present invention aims to provide an environmentally friendly alternative mixed gas purification treatment device and method capable of performing online gas repair and purification on electrical equipment that is running with power without power outage. The environmentally friendly alternative mixed gas purification treatment device comprises a body, a gas drive pipeline and an interface pipeline arranged in the body, the interface pipeline is connected with the gas chamber of the equipment to be repaired, the gas drive pipeline drives the gas to enter and exit the interface pipeline, and a repair purification module is also arranged in the body. The repair purification module comprises a 3A molecular sieve, a non-contact conductive heater and a first particle filter connected in sequence, the 3A molecular sieve is connected to the output end of the gas drive pipeline through a second solenoid valve, the first particle filter is connected to the input end of the gas drive pipeline through a third solenoid valve, the input end of the gas drive pipeline is connected to the first solenoid valve through a fourth solenoid valve, and the output end of the gas drive pipeline is connected to the first solenoid valve through a fifth solenoid valve. The present invention is applied to the technical field of insulating arc extinguishing gas treatment.

Description

Technical Field

[0001] The present invention is applied to the technical field of insulating arc extinguishing gas treatment for electrical equipment, and particularly relates to an environmentally friendly alternative mixed gas purification treatment device and method. Background Art

[0002] The traditional insulating arc-extinguishing gas SF6 is a colorless, odorless, non-toxic, non-flammable stable gas that can absorb free electrons to form massive negative ions, weakening the collision ionization process in the gas. Therefore, its electrical insulation strength is very high. It has been used as an arc-extinguishing medium for high-voltage circuit breakers since the late 1950s. Although sulfur hexafluoride itself is non-toxic and harmless to the human body, it is a greenhouse gas, and the greenhouse effect of a single molecule is 22,000 times that of carbon dioxide. In order to avoid the intensification of the greenhouse effect caused by SF6 gas leakage, the main methods currently include the research and development of purification equipment and the use of alternative gases as arc-extinguishing media.

[0003] Among them, new environmentally friendly gases that replace SF6 gas, such as C4F7N perfluoroisobutyronitrile, referred to as C4-FN and C5F10O perfluoropentanone; perfluoro (3-methyl-2-butanone, referred to as C5-FK) mixed with O2, CO2 or N2 and CF4, will be used more and more in electrical equipment to replace SF6 gas for insulation and arc extinguishing functions of electrical equipment. In the discharge of electrical equipment, the mixed gas is decomposed and split. Most of the decomposition products and split substances of C4-FN and C5-FK after discharge will not be restored. The main decomposition products are: CO, COF2, C2F6, C3F5N. In addition, due to poor sealing or incomplete vacuum drying during the maintenance process or incomplete drying of the equipment before leaving the factory, the liquid water in the insulating parts and metal walls of the equipment is not thoroughly treated. With the operation of the electrical equipment, the micro-water will continue to increase. These decomposition products and water vapor will reduce the insulation and arc extinguishing effect. In order to ensure the normal operation of electrical equipment, it is necessary to purify and repair the decomposition products and moisture in the environmentally friendly alternative gas to meet the standard for normal operation. However, the existing purification and repair equipment requires a power outage for the entire circuit to operate, which will cause huge economic losses to users. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an environmentally friendly alternative mixed gas purification treatment device and method capable of performing online gas repair and purification on energized electrical equipment without power outage.

[0005] The technical solution adopted in the present invention is: the environmentally friendly alternative mixed gas purification and processing equipment includes a body, a gas drive pipeline arranged in the body and an interface pipeline, the interface pipeline includes a first solenoid valve connected to each other and a hose provided with a first self-sealing interface, the first self-sealing interface is connected to the air chamber of the equipment to be repaired, the gas drive pipeline drives the gas in and out of the first self-sealing interface, and a repair purification module is also arranged in the body, the repair purification module includes a 3A molecular sieve, a non-contact conductive heater and a first particle filter connected in sequence, the 3A molecular sieve is connected to the output end of the gas drive pipeline through a second solenoid valve, the first particle filter is connected to the input end of the gas drive pipeline through a third solenoid valve, the input end of the gas drive pipeline is connected to the first solenoid valve through a fourth solenoid valve, and the output end of the gas drive pipeline is connected to the first solenoid valve through a fifth solenoid valve.

[0006] As can be seen from the above scheme, the interface pipeline is used to connect with the equipment to be repaired, wherein the self-sealing interface is an interface provided with a self-sealing valve, and a hose is used as a connecting structure to facilitate pipeline docking. By setting the gas drive pipeline to pressurize the gas, the gas to be purified is driven to move in the loop, and at the same time, the mixed gas is injected into the repair purification module or extracted from the repair purification module by pressurization and exhaust. By setting the 3A molecular sieve, it can effectively adsorb trace water molecules in the mixed gas, and it can ensure that the arc extinguishing gas filled back into the electrical equipment does not contain water molecules, and ensure the insulation and arc extinguishing performance of the arc extinguishing gas. At the same time, the molecular sieve has a fast adsorption speed, regeneration times, crushing strength and anti-pollution ability. By using a non-contact conduction heater to heat the mixed gas, the decomposition products such as CO, COF2, C2F6, C3F5N are reduced to C4-FN and C5-FK under the action of heating, thereby realizing the arc extinguishing ability of the repair and purification mixed gas. The first particle filter is used to further filter out the decomposition products and particles. The repaired homogeneous mixed gas is then filled back into the gas chamber of the electrical equipment through the gas drive pipeline to complete the repair and purification. At the same time, the gas pressure in the gas chamber of the electrical equipment is controlled by opening and closing the first solenoid valve to ensure that the arc-extinguishing gas is continuously repaired and purified without affecting the normal operation of the electrical equipment, thereby improving the working life and continuous working ability of the electrical equipment.

[0007] A preferred solution is that the gas drive pipeline includes a second particle filter, a gas drive device and a one-way valve connected in sequence, the output end of the gas drive device is provided with a humidity sensor, the output end of the third solenoid valve and the output end of the fourth solenoid valve are both connected to the input end of the second particle filter, the input end of the second solenoid valve and the input end of the fifth solenoid valve are both connected to the output end of the gas drive device, the input end of the one-way valve is connected in parallel with the input end of the second particle filter, and the output end of the one-way valve is connected in parallel with the output end of the gas drive device.

[0008] It can be seen from the above scheme that the gas driving device pressurizes the mixed gas passing through the second particle filter so that it enters the repair and purification module for repair and purification. The gas driving device is a gas compressor. The humidity sensor detects the humidity of the gas output by the gas driving device. The second particle filter performs preliminary decomposition product filtration and particle filtration to prevent impurities from affecting the insulation performance of the gas. Among them, the input end of the gas driving device can also be provided with a humidity sensor to detect the humidity of the input gas of the equipment to be repaired. When the air pressure at the input end of the gas driving pipeline is greater than the air pressure at the output end, the one-way valve automatically opens under the action of air pressure to transport the gas at the input end of the gas driving pipeline to the output end, thereby realizing automatic transportation without the need for the gas driving device to pressurize the gas and transport it; when the air pressure at the input end of the gas driving pipeline is less than the air pressure at the output end, the gas driving device starts and pressurizes the mixed gas.

[0009] A further preferred solution is that the output end of the second particle filter is connected to the gas drive device through a first pressure reducing valve, a first pressure sensor is provided between the first pressure reducing valve and the gas drive device, and a second pressure sensor is provided at the output end of the gas drive device. When the air pressure at the input end of the gas drive pipeline is greater than the air pressure at the output end, the one-way valve is opened by the pressure of the gas in the air chamber, and the gas is directly output to the second solenoid valve through the one-way valve for gas delivery, without the need for the gas drive device to achieve automatic energy saving, wherein the pressure detection by each pressure sensor is used to control whether the gas drive device is started or not.

[0010] It can be seen from the above scheme that the first pressure reducing valve is set to control the gas pressure to avoid pressure instability resulting in reduced filtering and purification effect. The first pressure sensor and the second pressure sensor are used to detect the gas pressure at the input and output ends of the gas driving device respectively, and then the power of the gas driving device is adjusted in real time to ensure the pressurization effect.

[0011] A further preferred solution is that a third pressure sensor is provided on the first self-sealing interface.

[0012] It can be seen from the above solution that by arranging the third pressure sensor close to the first self-sealing interface, delayed protection of the air chamber safety pressure due to delayed signals can be avoided.

[0013] A further preferred embodiment is that a sixth solenoid valve is further arranged between the 3A molecular sieve and the second solenoid valve, the output end of the 3A molecular sieve is connected to the non-contact conductive heater through a seventh solenoid valve, and the output end of the 3A molecular sieve is also connected to the input end of the first particle filter through an eighth solenoid valve, and a recovery module and an inflation module are further arranged in the body, the recovery module includes a second self-sealing interface arranged between the output end of the first particle filter and the third solenoid valve, the second self-sealing interface cooperates with the external container interface, the inflation module includes a third self-sealing interface and a second pressure reducing valve connected in sequence, the third self-sealing interface is connected to an external gas source, the output end of the second pressure reducing valve is connected to the input end of the sixth solenoid valve, the output end of the 3A molecular sieve is connected to the non-contact conductive heater through the seventh solenoid valve, and the output end of the 3A molecular sieve is also connected to the input end of the first particle filter through the eighth solenoid valve.

[0014] It can be seen from the above scheme that the second solenoid valve and the sixth solenoid valve are used to separate the inflation module from the gas drive pipeline and the repair and purification module, so as to ensure that the gas circuit can be adjusted in time when executing different working modes, and to ensure that the mixed gases do not contaminate each other. The decomposed arc-extinguishing gas is filtered by setting the recovery module, and then the gas is output to an external container to be transported to an external recovery device for recovery. The arc-extinguishing mixed gas is supplemented through the inflation module. The seventh solenoid valve and the eighth solenoid valve are set to switch whether to pass the non-contact conduction heater.

[0015] A preferred solution is that the output end of the first solenoid valve is connected to a fourth self-sealing interface, the fourth solenoid valve and the fifth solenoid valve are both connected to the fourth self-sealing interface, a fourth pressure sensor is arranged between the fourth self-sealing interface and the fourth solenoid valve, and a third pressure reducing valve is arranged between the fourth self-sealing interface and the fifth solenoid valve.

[0016] It can be seen from the above scheme that the fourth pressure sensor is used to detect the gas pressure input to the fourth solenoid valve, so as to facilitate the pressure control of the first pressure reducing valve. The third pressure reducing valve is used to control and adjust the pressure of the input gas chamber during recharging, so that the gas pressure value reaches the pressure value that can be charged back to the gas chamber of the equipment to be repaired, and does not exceed the upper limit of the gas pressure of the gas chamber.

[0017] A further preferred solution is that a vacuum pumping module is provided between the fourth self-sealing interface and the gas drive pipeline, the vacuum pumping module comprises a ninth solenoid valve and a vacuum pump, and the vacuum pump performs vacuum pumping in the connected circuit.

[0018] It can be seen from the above scheme that by setting up the vacuum pump, the electrical equipment can be evacuated, and the gas drive pipeline and the repair and purification module can be vacuumed and purified to avoid mutual contamination of environmentally friendly gases.

[0019] The treatment method includes an online treatment mode, an offline power-off recovery and purification mode, and an external charging mode, wherein the online treatment mode includes the following steps:

[0020] Step S1, connecting the hose provided with the first self-sealing interface to the air chamber of the electrical equipment to be repaired, setting the safety protection pressure value of the air chamber, detecting the air chamber pressure value by the third pressure sensor, and performing on-off control of the first solenoid valve according to the result of comparing the detection value of the third pressure sensor with the safety protection pressure value;

[0021] Step S2: When the gas in the gas chamber enters the gas drive pipeline and the gas pressure at the input end of the gas drive pipeline is lower than the gas pressure at the output end, the fourth solenoid valve is opened, and after the gas passes through the second particle filter and enters the gas drive device, the second solenoid valve, the sixth solenoid valve and the seventh solenoid valve are opened, and the gas drive device drives the gas to be repaired to first pass through the 3A molecular sieve for filtration, and then enter the non-contact conduction heater; when the gas pressure at the input end of the gas drive pipeline is higher than the gas pressure at the output end, the gas in the gas chamber is directly output to the second solenoid valve through the one-way valve for purification and repair;

[0022] Step S3, when all the gas to be repaired is pumped into the non-contact conduction heater, the fourth solenoid valve is closed, and the gas to be repaired is heated, reduced, repaired, and made uniform and homogeneous in the non-contact conduction heater according to the set time and temperature;

[0023] Step S4: After the repair is completed, the second solenoid valve is closed, the third solenoid valve and the fifth solenoid valve are opened, and the mixed gas returns through the gas drive pipeline and the fifth solenoid valve and is filled into the air chamber of the electrical equipment. The gas drive device sucks the purified and repaired gas in the repair and purification module and pumps it into the air chamber of the electrical equipment to complete the live online repair process.

[0024] It can be seen from the above scheme that by setting the non-contact conduction heater for heating, the arc extinguishing environmental protection gas can be heated and repaired by using the decomposed mixed gas, and the mixed gas can be fully and evenly heated by non-contact heating to ensure the repair effect. At the same time, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are used to switch the three functional circuits of extraction, repair and recharging, thereby ensuring that each process does not interfere with each other.

[0025] A preferred solution is that the offline power outage recovery and purification mode includes the following steps:

[0026] Step S5, after the electrical equipment to be repaired is powered off and the amount of mixed gas is large, the mixed gas in the mixed gas chamber enters the gas drive pipeline through the hose, the second solenoid valve, the fourth solenoid valve, the sixth solenoid valve and the eighth solenoid valve are opened, and the seventh solenoid valve is closed, and the gas drive pipeline drives the mixed gas to pass through the 3A molecular sieve, the eight solenoid valves and the second self-sealing interface and be filled into an external container for offline repair and purification;

[0027] Step S6, when the amount of mixed gas is small, the second solenoid valve, the fourth solenoid valve, the sixth solenoid valve and the seventh solenoid valve are opened, the second self-sealing interface is not connected to the external joint to maintain the self-sealing state, the gas drive pipeline drives the gas to be repaired to pass through the 3A molecular sieve for filtration first, and then enters the non-contact conduction heater for heating and reduction repair, after the mixed gas to be repaired is completely input into the pipeline, the fourth solenoid valve is closed, and the third solenoid valve is opened, so that a loop is formed between the gas drive pipeline and the repair and purification module, and the gas drive pipeline drives the gas to realize offline circulation repair, after the repair is completed, the second solenoid valve is closed and the fifth solenoid valve is opened, and the gas after offline repair is filled into the electrical equipment that needs to be replenished.

[0028] It can be seen from the above scheme that there are two ways of off-line power outage purification. When the amount of mixed gas is large, the mixed gas is transported to a large purification device through an external container for repair and purification. When the amount of mixed gas is small, a loop is formed between the gas drive pipeline and the repair and purification module to circulate the driving gas into the non-contact conduction heater for heating and reduction repair, so as to achieve rapid cycle repair in the case of a small amount of mixed gas without transfer, thereby improving the repair efficiency.

[0029] A preferred solution is that the external inflation mode includes the following steps:

[0030] Step S7, the external mixed gas is connected to the third self-sealing interface, the second solenoid valve is closed, the sixth solenoid valve and the seventh solenoid valve are opened, and the mixed gas first enters the 3A molecular sieve for filtration, and then enters the non-contact conductive heater for homogenization;

[0031] Step S8: After the homogenization, the third solenoid valve and the fifth solenoid valve are opened, and the gas driving pipeline fills the homogenized mixed gas into the air chamber of the electrical equipment connected to the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the connection structure of the present invention. DETAILED DESCRIPTION

[0033] like Figure 1 As shown, in this embodiment, the environmentally friendly alternative mixed gas purification and processing equipment includes a body, a gas drive pipeline and an interface pipeline arranged in the body, the interface pipeline includes a connected first solenoid valve 1 and a hose provided with a first self-sealing interface 2, the first self-sealing interface 2 is connected to the air chamber of the equipment to be repaired, and the gas drive pipeline drives the gas to enter and exit the first self-sealing interface 2. A repair purification module is also provided in the body, and the repair purification module includes a 3A molecular sieve 3, a non-contact conduction heater 4 and a first particle filter 5 connected in sequence, the 3A molecular sieve 3 is connected to the output end of the gas drive pipeline through the second solenoid valve 6, the first particle filter 5 is connected to the input end of the gas drive pipeline through the third solenoid valve 7, the input end of the gas drive pipeline is connected to the first solenoid valve 1 through the fourth solenoid valve 8, and the output end of the gas drive pipeline is connected to the first solenoid valve 1 through the fifth solenoid valve 9. The 3A molecular sieve 3 is arranged in the first container, and a purification filter is also arranged in the first container. When the gas is filled into the first container, it is first dried by the 3A molecular sieve 3, and then the particles are filtered and purified by the purification filter. The non-contact conduction heater 4 is arranged in the second container, and the non-contact conduction heater 4 is a light wave tube heater, an electromagnetic heater or an infrared heater. The non-contact conduction heater 4 achieves uniform heating of the gas entering the second container by heat radiation.

[0034] In this embodiment, the gas drive pipeline includes a second particle filter 10, a gas drive device 11 and a one-way valve 27 connected in sequence, the input end and / or output end of the gas drive device 11 is provided with a humidity sensor 12, the output end of the third solenoid valve 7 and the output end of the fourth solenoid valve 8 are both connected to the input end of the second particle filter 10, the input end of the second solenoid valve 6 and the input end of the fifth solenoid valve 9 are both connected to the output end of the gas drive device 11, the input end of the one-way valve 27 is connected in parallel with the input end of the second particle filter 10, and the output end of the one-way valve 27 is connected in parallel with the output end of the gas drive device 11. The gas drive device 11 is a gas compressor.

[0035] In this embodiment, the output end of the second particle filter 10 is connected to the gas driving device 11 through a first pressure reducing valve 13, a first pressure sensor 14 is arranged between the first pressure reducing valve 13 and the gas driving device 11, and a second pressure sensor 15 is arranged at the output end of the gas driving device 11.

[0036] In this embodiment, a third pressure sensor 16 is provided on the first self-sealing interface 2 .

[0037] In this embodiment, a sixth solenoid valve 17 is further provided between the 3A molecular sieve 3 and the second solenoid valve 6, the output end of the 3A molecular sieve 3 is connected to the non-contact conductive heater 4 through a seventh solenoid valve 18, and the output end of the 3A molecular sieve 3 is also connected to the input end of the first particle filter 5 through an eighth solenoid valve 19. A recovery module and an inflation module are also provided in the body, the recovery module includes a second self-sealing interface 20 provided between the output end of the first particle filter 5 and the third solenoid valve 7, the second self-sealing interface 20 cooperates with the external container interface, the inflation module includes a third self-sealing interface 21 and a second pressure reducing valve 22 connected in sequence, the third self-sealing interface 21 is connected to an external gas source, the output end of the second pressure reducing valve 22 is connected to the input end of the sixth solenoid valve 17, the output end of the 3A molecular sieve 3 is connected to the non-contact conductive heater 4 through the seventh solenoid valve 18, and the output end of the 3A molecular sieve 3 is also connected to the input end of the first particle filter 5 through the eighth solenoid valve 19.

[0038] In this embodiment, the output end of the first solenoid valve 1 is connected to the fourth self-sealing interface 23, the fourth solenoid valve 8 and the fifth solenoid valve 9 are both connected to the fourth self-sealing interface 23, a fourth pressure sensor 28 is arranged between the fourth self-sealing interface 23 and the fourth solenoid valve 8, and a third pressure reducing valve 24 is arranged between the fourth self-sealing interface 23 and the fifth solenoid valve 9.

[0039] In this embodiment, a vacuum pumping module is provided between the fourth self-sealing interface 23 and the gas driving pipeline, and the vacuum pumping module includes a ninth solenoid valve 25 and a vacuum pump 26 , and the vacuum pump 26 is used to vacuum the connected circuit.

[0040] In this embodiment, the environmentally friendly alternative mixed gas purification and treatment equipment also includes a control panel and a processor. The control panel is electrically connected to the processor by signals, and the gas drive pipeline, the interface pipeline, the repair purification module, the recovery module and the electronic control components in the inflation module are all electrically connected to the processor by signals.

[0041] In this embodiment, all pressure reducing valves are pressure reducing valve structures capable of setting pressure values.

[0042] In this embodiment, the processing method of an environmentally friendly alternative mixed gas purification treatment equipment includes an online processing mode with power supply, an offline power-off recovery and purification mode, an external charging mode and a manual control processing mode. In the initial state, all solenoid valves are in a closed state, wherein the online processing mode with power supply includes the following steps:

[0043] Step S1, connect the hose provided with the first self-sealing interface 2 to the air chamber of the electrical equipment to be repaired, wherein the first self-sealing interface 2 is connected to the interface of the arc extinguishing air chamber of the electrical equipment to be repaired, set the air chamber safety protection pressure value according to the equipment parameters, detect the air chamber pressure value in real time through the third pressure sensor 16, and the first solenoid valve 1 performs on-off control according to the result of comparing the detection value of the third pressure sensor 16 with the safety protection pressure value. When it is detected that the air pressure value is close to the safety protection pressure value, the first solenoid valve 1 is automatically closed to avoid the gas in the air chamber from dropping, so as to ensure the normal operation of the electrical equipment, and the extracted gas enters the environmentally friendly alternative mixed gas purification treatment equipment for purification and repair;

[0044] Step S2, when the gas in the gas chamber enters the gas drive pipeline and the gas pressure at the input end of the gas drive pipeline is less than the gas pressure at the output end, the fourth pressure sensor 28 detects the gas pressure of the input gas, the fourth solenoid valve 8 is opened, and the gas passes through the second particle filter 10 and the second pressure reducing valve 13 and is filtered and adjusted before entering the gas drive device 11, and the gas is pressurized by the gas drive device 11, the first pressure sensor 14 detects the gas pressure at the output end of the second pressure reducing valve 13, the processor adjusts the pressure of the second pressure reducing valve 13 according to the pressure difference between the front and rear gases, and the second pressure sensor 15 detects the gas pressure at the output end of the second pressure reducing valve 13. The pressure value of the gas after the gas driving device 11 is pressurized is measured, the humidity sensor 12 detects the humidity of the gas input to the repair and purification module, the second solenoid valve 6, the sixth solenoid valve 17 and the seventh solenoid valve 18 are opened, and the gas driving device 11 drives the gas to be repaired to first pass through the 3A molecular sieve 3 for filtration and purification, and then enter the non-contact conductive heater 4; when the input end pressure of the gas driving pipeline is greater than the output end pressure, the gas in the air chamber opens the one-way valve 27 under the action of pressure, and is directly output to the second solenoid valve 6 through the one-way valve 27, and the gas driving device 11 is not started;

[0045] Step S3, when all the gas to be repaired is pumped into the non-contact conduction heater 4, the fourth solenoid valve 8 is closed, and the gas to be repaired is heated, reduced, repaired and made uniform in the non-contact conduction heater 4 according to the set time and temperature;

[0046] Step S4, after the repair is completed, the second solenoid valve 6 is closed, the third solenoid valve 7 and the fifth solenoid valve 9 are opened, and the mixed gas is double filtered by the first particle filter 5 and the second particle filter 10, and the corresponding pressure values ​​are detected by the first pressure sensor 14 and the second pressure sensor 15, and the gas driving device 11 is pressurized and adjusted, and the humidity of the repaired gas is detected by the humidity sensor 12. Finally, the air pressure is controlled to return through the fifth solenoid valve 9 and the third pressure reducing valve 24 and filled into the air chamber of the electrical equipment. The gas driving device 11 sucks the purified and repaired gas in the repair and purification module and pumps it into the air chamber of the electrical equipment to complete the online repair process with power on.

[0047] The offline power outage recovery and purification mode comprises the following steps:

[0048] Step S5, when the electrical equipment to be repaired is powered off and the amount of mixed gas is large, the mixed gas in the mixed gas chamber enters the gas drive pipeline through the hose, the second solenoid valve 6, the fourth solenoid valve 8, the sixth solenoid valve 17 and the eighth solenoid valve 19 are opened, and the seventh solenoid valve 18 is closed, and the gas drive pipeline drives the mixed gas to pass through the 3A molecular sieve 3, the eight solenoid valves and the second self-sealing interface 20 and be filled into an external container for offline repair and purification;

[0049] Step S6, when the amount of mixed gas is small, the second solenoid valve 6, the fourth solenoid valve 8, the sixth solenoid valve 17 and the seventh solenoid valve 18 are opened, and the second self-sealing interface 20 is not connected to an external connector to maintain a self-sealing state, and the gas drive pipeline drives the gas to be repaired to first pass through the 3A molecular sieve 3 for filtration, and then enter the non-contact conduction heater 4 for heating and reduction repair. After the mixed gas to be repaired is completely input into the pipeline, the fourth solenoid valve 8 is closed, and the third solenoid valve 7 is opened, so that a loop is formed between the gas drive pipeline and the repair and purification module, and the gas drive pipeline drives the gas to realize circulation repair. After the repair is completed, the second solenoid valve 6 is closed and the fifth solenoid valve 9 is opened to fill the repaired gas into the electrical equipment that needs to be replenished.

[0050] The external inflation mode comprises the following steps:

[0051] Step S7, the external mixed gas is connected to the third self-sealing interface 21, the second solenoid valve 6 is closed, the sixth solenoid valve 17 and the seventh solenoid valve 18 are opened, and the mixed gas first enters the 3A molecular sieve 3 for filtration, and then enters the non-contact conductive heater 4 for homogenization;

[0052] Step S8: After the homogenization, the third solenoid valve 7 and the fifth solenoid valve 9 are opened, and the gas driving pipeline fills the homogenized mixed gas into the gas chamber of the electrical equipment connected to the hose.

[0053] In this embodiment, the manual control processing mode includes the following steps:

[0054] Step S9, after entering the manual mode, the user can select and control the first solenoid valve 1, the non-contact conduction heater 4, the second solenoid valve 6, the third solenoid valve 7, the fourth solenoid valve 8, the fifth solenoid valve 9, the gas drive device 11, the sixth solenoid valve 17, the seventh solenoid valve 18, the eighth solenoid valve 19, the ninth solenoid valve 25 and the vacuum pump 26 and other independent components according to the user's use requirements, so as to formulate a suitable operation process according to the user's actual use requirements and realize manual control processing.

[0055] During the recharging process, the pressure of the recharging gas is monitored by pressure sensors, humidity sensors and pressure reducing valves to ensure that the charged gas does not contain trace water and that the air pressure meets the strength requirements of the electrical equipment.

[0056] When it is necessary to purify the internal pipeline of the equipment, the hose is separated from the fourth self-sealing interface 23, and all the solenoid valves are opened to evacuate the pipeline by the vacuum pump 26, thereby purifying the pipeline inside the machine body.

[0057] When the air chamber of the electrical equipment needs to be purified, the fourth solenoid valve 8 and the fifth solenoid valve 9 remain closed, the ninth solenoid valve 25 and the first solenoid valve 1 are opened, and the air chamber inside the electrical equipment is vacuumed and purified by the vacuum pump 26.

Claims

1. An environmentally friendly alternative mixed gas purification and processing equipment, comprising a body, a gas drive pipeline and an interface pipeline arranged in the body, the interface pipeline comprising a first solenoid valve (1) connected to each other and a hose provided with a first self-sealing interface (2), the first self-sealing interface (2) being cooperatively connected to an air chamber of a device to be repaired, the gas drive pipeline driving gas to enter and exit the first self-sealing interface (2), characterized in that: The body is also provided with a repair and purification module, the repair and purification module comprising a 3A molecular sieve (3), a non-contact conductive heater (4) and a first particle filter (5) which are connected in sequence, the 3A molecular sieve (3) being connected to the output end of the gas drive pipeline via a second solenoid valve (6), the first particle filter (5) being connected to the input end of the gas drive pipeline via a third solenoid valve (7), the input end of the gas drive pipeline being connected to the first solenoid valve (1) via a fourth solenoid valve (8), and the output end of the gas drive pipeline being connected to the first solenoid valve (1) via a fifth solenoid valve (9).

2. The environmentally friendly alternative mixed gas purification and processing equipment according to claim 1 is characterized by: The gas drive pipeline comprises a second particle filter (10), a gas drive device (11) and a one-way valve (27) which are connected in sequence; the output end of the gas drive device (11) is provided with a humidity sensor (12); the output end of the third solenoid valve (7) and the output end of the fourth solenoid valve (8) are both connected to the input end of the second particle filter (10); the input end of the second solenoid valve (6) and the input end of the fifth solenoid valve (9) are both connected to the output end of the gas drive device (11); the input end of the one-way valve (27) is connected in parallel to the input end of the second particle filter (10); and the output end of the one-way valve (27) is connected in parallel to the output end of the gas drive device (11).

3. The environmentally friendly alternative mixed gas purification and processing equipment according to claim 2 is characterized by: The output end of the second particle filter (10) is connected to the gas drive device (11) via a first pressure reducing valve (13); a first pressure sensor (14) is provided between the first pressure reducing valve (13) and the gas drive device (11); and a second pressure sensor (15) is provided at the output end of the gas drive device (11).

4. The environmentally friendly alternative mixed gas purification and processing equipment according to claim 2 is characterized by: A third pressure sensor (16) is provided on the first self-sealing interface (2).

5. The environmentally friendly alternative mixed gas purification and processing equipment according to claim 4 is characterized by: A sixth solenoid valve (17) is further provided between the 3A molecular sieve (3) and the second solenoid valve (6); the output end of the 3A molecular sieve (3) is connected to the non-contact conductive heater (4) via a seventh solenoid valve (18); the output end of the 3A molecular sieve (3) is further connected to the input end of the first particle filter (5) via an eighth solenoid valve (19); a recovery module and an air charging module are further provided in the body; the recovery module comprises a second self-sealing interface (20) provided between the output end of the first particle filter (5) and the third solenoid valve (7); the The second self-sealing interface (20) cooperates with the interface of the external container, and the inflation module comprises a third self-sealing interface (21) and a second pressure reducing valve (22) which are connected in sequence. The third self-sealing interface (21) is connected to the external gas source in cooperation with each other, and the output end of the second pressure reducing valve (22) is connected to the input end of the sixth solenoid valve (17). The output end of the 3A molecular sieve (3) is connected to the non-contact conductive heater (4) through the seventh solenoid valve (18), and the output end of the 3A molecular sieve (3) is also connected to the input end of the first particle filter (5) through the eighth solenoid valve (19).

6. The environmentally friendly alternative mixed gas purification and processing equipment according to claim 1 is characterized by: The output end of the first solenoid valve (1) is connected to a fourth self-sealing interface (23); the fourth solenoid valve (8) and the fifth solenoid valve (9) are both connected to the fourth self-sealing interface (23); a fourth pressure sensor (28) is provided between the fourth self-sealing interface (23) and the fourth solenoid valve (8); and a third pressure reducing valve (24) is provided between the fourth self-sealing interface (23) and the fifth solenoid valve (9).

7. The environmentally friendly alternative mixed gas purification and processing equipment according to claim 6 is characterized by: A vacuum pumping module is provided between the fourth self-sealing interface (23) and the gas drive pipeline, the vacuum pumping module comprising a ninth solenoid valve (25) and a vacuum pump (26), the vacuum pump (26) being used to vacuumize the circuit.

8. A method for treating an environmentally friendly alternative mixed gas purification treatment device as claimed in claim 5, characterized in that: The method comprises an online treatment mode, an offline power-off recovery and purification mode and an external gas charging mode, wherein the online treatment mode comprises the following steps: Step S1, connecting the hose provided with the first self-sealing interface (2) to the air chamber of the electrical equipment to be repaired, setting the air chamber safety protection pressure value, detecting the air chamber pressure value by the third pressure sensor (16), and performing on-off control on the first solenoid valve (1) according to the result of comparing the detection value of the third pressure sensor (16) with the safety protection pressure value; Step S2: When the gas in the gas chamber enters the gas drive pipeline and the gas pressure at the input end of the gas drive pipeline is lower than the gas pressure at the output end, the fourth solenoid valve (8) is opened, and after the gas passes through the second particle filter (10) and enters the gas drive device (11), the second solenoid valve (6), the sixth solenoid valve (17) and the seventh solenoid valve (18) are opened, and the gas drive device (11) drives the gas to be repaired to first pass through the 3A molecular sieve (3) for filtration, and then enter the non-contact conduction heater (4); when the gas pressure at the input end of the gas drive pipeline is higher than the gas pressure at the output end, the gas in the gas chamber is directly output to the second solenoid valve (6) through the one-way valve (27) to perform purification and repair; Step S3, when all the gas to be repaired is pumped into the non-contact conduction heater (4), the fourth solenoid valve (8) is closed, and the gas to be repaired is heated, reduced, repaired, and made uniform and homogeneous in the non-contact conduction heater (4) according to the set time and temperature; Step S4, after the repair is completed, the second solenoid valve (6) is closed, the third solenoid valve (7) and the fifth solenoid valve (9) are opened, the mixed gas returns through the gas drive pipeline and the fifth solenoid valve (9) and is filled into the gas chamber of the electrical equipment, the gas drive device (11) sucks out the purified and repaired gas in the repair and purification module and pumps it into the gas chamber of the electrical equipment, thereby completing the live online repair process.

9. The processing method according to claim 8, characterized in that: The offline power outage recovery and purification mode comprises the following steps: Step S5: After the electrical equipment to be repaired is powered off and the amount of mixed gas is large, the mixed gas in the mixed gas chamber enters the gas drive pipeline through the hose, the second solenoid valve (6), the fourth solenoid valve (8), the sixth solenoid valve (17) and the eighth solenoid valve (19) are opened, and the seventh solenoid valve (18) is closed. The gas drive pipeline drives the mixed gas to pass through the 3A molecular sieve (3), the eighth solenoid valve and the second self-sealing interface (20) and then fill into an external container for offline repair and purification; Step S6, when the amount of the mixed gas is small, the second solenoid valve (6), the fourth solenoid valve (8), the sixth solenoid valve (17) and the seventh solenoid valve (18) are opened, the second self-sealing interface (20) is not connected to an external joint and remains in a self-sealing state, the gas driving pipeline drives the gas to be repaired to first pass through the 3A molecular sieve (3) for filtration, and then enters the non-contact conductive heater (4) for heating and reduction repair, after the mixed gas to be repaired is completely input into the pipeline, the fourth solenoid valve (8) is closed, the third solenoid valve (7) is opened, so that a loop is formed between the gas driving pipeline and the repair and purification module, the gas driving pipeline drives the gas to achieve cyclic repair, after the repair is completed, the second solenoid valve (6) is closed and the fifth solenoid valve (9) is opened, and the repaired gas is filled into the electrical equipment that needs to be replenished.

10. The processing method according to claim 8, characterized in that: The external inflation mode comprises the following steps: Step S7, the external mixed gas is connected to the third self-sealing interface (21), the second solenoid valve (6) is closed, the sixth solenoid valve (17) and the seventh solenoid valve (18) are opened, and the mixed gas first enters the 3A molecular sieve (3) for filtration, and then enters the non-contact conductive heater (4) for homogenization; Step S8: After the homogenization, the third solenoid valve (7) and the fifth solenoid valve (9) are opened, and the gas drive pipeline fills the homogenized mixed gas into the gas chamber of the electrical equipment connected to the hose.

Images