Mixed gas filling system

Abstract

The utility model relates to a mixed gas filling system, and relates to the field of mixed gas inflation technology, the mixed gas filling system comprises a rack, a first gas storage tank, a second gas storage tank, a gas mixing bin, a console, a vacuum pump and an inflator pump are installed on the rack, and a first gas inlet pipe and a second gas inlet pipe are respectively arranged between the first gas storage tank and the gas mixing bin and between the second gas storage tank and the gas mixing bin in a communicating manner; a first valve and a first flow meter are mounted on the first air inlet pipe, and a second valve and a second flow meter are mounted on the second air inlet pipe; an exhaust pipeline is arranged between the gas mixing bin and the vacuum pump in a communicating mode, an exhaust valve is installed on the exhaust pipeline, an inflation pipeline is arranged between the inflation pump and the gas mixing bin in a communicating mode, an inflation valve is installed on the inflation pipeline, and the gas outlet end of the inflation pipeline is detachably connected with a container to be inflated. According to the invention, the gas mixing convenience of a user can be improved.

Description

Technical Field

[0001] The present application relates to the field of mixed gas inflation technology, and in particular to a mixed gas filling system. Background Art

[0002] Sulfur hexafluoride (SF6) is an inert gas with a significant greenhouse effect and is listed as one of the six gases that require global regulation. Compared with the same amount of SF6 gas and CO2 gas, the greenhouse effect of SF6 gas is equivalent to 23,900 times that of CO2 gas. The degradation process of SF6 in the atmosphere is very slow, taking about 3,000 years. Using SF6 and N2 mixed gas instead of pure SF6 gas can significantly reduce SF6 usage and leakage, reduce the harm of greenhouse gases, and reduce GIS manufacturing costs, which is of great significance to energy conservation, emission reduction and low-carbon development.

[0003] In the prior art, the common SF6 and N2 mixed gas filling system mainly uses a mass flow meter to accurately control the gas component content of the two gases, then forms a certain ratio in a mixing barrel, and injects the gas into the GIS through a compressor.

[0004] However, this mixed inflation device is complicated to operate. During inflation, the operator needs to complete the inflation operation in multiple steps. The first step is to inflate the GIS to a certain pressure and then stop the machine. Then, the purity is detected by an instrument. The relevant parameters are manually adjusted according to the existing purity before inflation. Without certain technical capabilities, it is impossible to complete it independently. It places high demands on technical personnel and there is room for improvement. Utility Model Content

[0005] In order to improve the convenience of mixing gases for users, the present application provides a mixed gas filling system.

[0006] The mixed gas filling system provided in this application adopts the following technical solution:

[0007] A mixed gas filling system comprises a frame, on which a first gas storage tank, a second gas storage tank, a gas mixing chamber, a control console, a vacuum pump, and an air pump are installed, a first air inlet pipe and a second air inlet pipe are respectively connected between the first gas storage tank, the second gas storage tank and the gas mixing chamber, a first valve and a first flow meter are installed on the first air inlet pipe, and a second valve and a second flow meter are installed on the second air inlet pipe;

[0008] An exhaust pipe is provided between the gas mixing chamber and the vacuum pump, an exhaust valve is installed on the exhaust pipe, an inflation pipe is provided between the inflation pump and the gas mixing chamber, an inflation valve is installed on the inflation pipe, and an outlet end of the inflation pipe is detachably connected to a container to be inflated;

[0009] The signal output end of the console is signal-connected to the signal output ends of the first valve, the first flowmeter, the second valve, the second flowmeter, the vacuum pump, the inflation pump, the exhaust valve, and the inflation valve;

[0010] The first air intake pipe, the second air intake pipe, the exhaust pipe and the charging pipe are all installed with a pipe protection mechanism.

[0011] By adopting the above technical solution, during the actual production and processing, the user can control the exhaust valve to start through the console, and at the same time control the vacuum pump to extract the air in the gas mixing chamber in advance; then, the user can input the required amount of nitrogen and sulfur hexafluoride through the console, and the console can control the first valve, the first flowmeter, the second valve, and the second flowmeter to start, and add nitrogen and sulfur hexafluoride to the gas mixing chamber. When the amount of nitrogen and sulfur hexafluoride reaches the set amount, the console can control the first valve and the second valve to shut off and stop adding nitrogen and sulfur hexafluoride to the gas mixing chamber; then, the user starts the inflation valve through the console, and at the same time, the inflation pump fills the nitrogen and sulfur hexafluoride mixed gas into the gas mixing chamber, which can facilitate the operation of distributing and filling nitrogen and sulfur hexafluoride, and improve the convenience of users to mix and fill the mixed gas. At the same time, since the first air inlet pipe, the second air inlet pipe, the exhaust pipe and the inflation pipe are all equipped with pipeline protection mechanisms, the impact of sudden pressure increase on the pipeline when the gas in the pipeline flows can be reduced, and the occurrence of pipeline rupture can be reduced.

[0012] Preferably, the pipeline protection mechanism comprises protection pipes respectively connected and arranged on the first air intake pipe, the second air intake pipe, the exhaust pipe and the charging pipe;

[0013] A piston is slidably connected inside the protection tube, and a sealing ring is installed between the side wall of the piston and the tube wall of the protection tube;

[0014] The top of the piston is fixedly connected with a slide rod, the top of the protection tube is fixedly connected with a top plate, and the top plate is provided with a slide hole for the slide rod to extend out;

[0015] A spring is sleeved on the slide rod, and two ends of the spring are fixedly connected to the piston and the top plate respectively.

[0016] By adopting the above technical solution, when the air pressure inside the first intake pipe, the second intake pipe, the exhaust pipe and the inflation pipe suddenly rises, the piston is pushed up by the gas, which can reduce the pressure on the first intake pipe, the second intake pipe, the exhaust pipe and the inflation pipe, and provide protection for the first intake pipe, the second intake pipe, the exhaust pipe and the inflation pipe. When the air pressure inside the pipe drops, the spring drives the piston to reset, thereby achieving a continuous and effective pipe protection effect.

[0017] Preferably, the protective tube is installed with:

[0018] A piston detection component is used to detect the piston rising speed and output an alarm signal when the piston height rises too fast;

[0019] A buzzer is fixedly mounted on the top plate and connected to the signal output end of the piston detection assembly for receiving the alarm signal and issuing a warning sound.

[0020] By adopting the above technical solution, the piston detection component and the buzzer are used in combination with each other. When the piston rises too fast, it can be determined that the air pressure inside the pipe is too high and there is a risk. The buzzer can be used to issue a warning sound to alert the user.

[0021] Preferably, the piston detection assembly comprises:

[0022] A laser distance measuring sensor is fixedly mounted on the top plate and arranged toward the piston, and is used to detect the distance between the laser distance measuring sensor and the piston and output a sensing distance signal;

[0023] The single chip microcomputer has a signal input terminal connected to a signal output terminal of the laser distance measuring sensor, and is used to receive the sensing distance signal and calculate the piston rising speed, and output the alarm signal when the piston rising speed is greater than a set value.

[0024] By adopting the above technical solution, the laser distance measuring sensor and the single chip microcomputer are used in combination to detect the rising speed of the piston.

[0025] Preferably, the ends of the first air inlet pipe and the second air inlet pipe close to the gas mixing chamber are respectively formed with U-shaped condensing pipe parts, a low-temperature chamber is fixedly installed on the outer wall of the gas mixing chamber, and the condensing pipe parts are both located in the low-temperature chamber;

[0026] The condensing pipe parts are respectively connected with drainage pipes, the drainage pipes extend to the outside of the low-temperature warehouse, and the drainage pipes are respectively installed with drainage valves.

[0027] By adopting the above technical solution, when the gas flows into the gas mixing chamber through the condenser pipe part, the water vapor mixed in the gas is cooled, liquefied and enriched in the condenser pipe part, which can avoid the occurrence of excessive water in the mixed gas. The user can regularly discharge the water in the condenser pipe part through the drain valve.

[0028] Preferably, the low-temperature warehouse includes an air inlet and an air outlet, a fan is installed at the air inlet, a refrigeration warehouse is formed in the low-temperature warehouse, two opposite refrigeration semiconductors are fixedly installed in the refrigeration warehouse, the air outlet of the fan is located between the two refrigeration semiconductors, and a cold air inlet is opened on the refrigeration warehouse, and the cold air inlet is opposite to the fan.

[0029] By adopting the above technical solution, cold energy can be generated through refrigeration semiconductors, and the cold energy can be diffused into the low-temperature chamber through the fan, so that the moisture carried in the gas can be liquefied.

[0030] In summary, the mixed gas filling system of the present application includes at least one of the following beneficial technical effects:

[0031] 1. During the actual production and processing process, the user can control the exhaust valve to start through the console, and at the same time control the vacuum pump to extract the air in the gas mixing chamber in advance; then, the user can input the required amount of nitrogen and sulfur hexafluoride through the console, and the console can control the first valve, the first flowmeter, the second valve, and the second flowmeter to start, and add nitrogen and sulfur hexafluoride to the gas mixing chamber. When the amount of nitrogen and sulfur hexafluoride reaches the set amount, the console can control the first valve and the second valve to shut off, and stop adding nitrogen and sulfur hexafluoride to the gas mixing chamber; then, the user starts the inflation valve through the console, and at the same time, the inflation pump fills the gas mixing chamber with nitrogen and sulfur hexafluoride mixed gas, which can facilitate the operation of distributing and filling nitrogen and sulfur hexafluoride, and improve the convenience of users in mixing and filling the mixed gas;

[0032] 2. When the air pressure inside the first air intake pipe, the second air intake pipe, the exhaust pipe and the inflation pipe suddenly rises, the piston is pushed up by the gas, which can reduce the pressure on the first air intake pipe, the second air intake pipe, the exhaust pipe and the inflation pipe, and provide protection for the first air intake pipe, the second air intake pipe, the exhaust pipe and the inflation pipe. When the air pressure inside the pipe drops, the spring drives the piston to reset, thereby achieving continuous and effective pipe protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a filling system.

[0034] Figure 2 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a pipeline protection mechanism.

[0035] Figure 3 It is a schematic diagram of an embodiment of the present application for showing the internal structure of a low-temperature warehouse.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. first gas storage tank; 11. first air inlet pipe; 12. first flow meter; 13. first valve; 2. second gas storage tank; 21. second air inlet pipe; 22. second flow meter; 23. second valve; 3. gas mixing chamber; 31. low-temperature chamber; 32. fan; 33. refrigeration semiconductor; 34. refrigeration chamber; 4. vacuum pump; 41. exhaust pipe; 42. exhaust valve; 5. inflation pump; 51. inflation pipe; 52. inflation valve; 6. pipe protection mechanism; 61. protection tube; 62. piston; 63. slide rod; 64. top plate; 65. spring; 66. buzzer; 67. laser ranging sensor; 7. condenser pipe; 71. drain pipe; 72. drain valve. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-3 This application is described in further detail.

[0038] Example

[0039] The embodiment of the present application discloses a mixed gas filling system. It mainly includes a frame, on which a first gas storage tank 1, a second gas storage tank 2, a gas mixing chamber 3, a control console, a vacuum pump 4, and an air pump 5 are installed. Figure 1 The first gas storage tank 1, the second gas storage tank 2 and the gas mixing chamber 3 are connected with a first air inlet pipe 11 and a second air inlet pipe 21, respectively. The first air inlet pipe 11 is provided with a first valve 13 and a first flow meter 12, and the second air inlet pipe 21 is provided with a second valve 23 and a second flow meter 22.

[0040] An exhaust pipe 41 is provided between the gas mixing chamber 3 and the vacuum pump 4, and an exhaust valve 42 is installed on the exhaust pipe 41. An inflation pipe 51 is provided between the inflation pump 5 and the gas mixing chamber 3, and an inflation valve 52 is installed on the inflation pipe 51. The outlet end of the inflation pipe 51 is detachably connected to the container to be inflated.

[0041] The signal output end of the control console is signal-connected to the signal output ends of the first valve 13 , the first flow meter 12 , the second valve 23 , the second flow meter 22 , the vacuum pump 4 , the inflation pump 5 , the exhaust valve 42 and the inflation valve 52 .

[0042] The first air intake pipe 11 , the second air intake pipe 21 , the exhaust pipe 41 and the charging pipe 51 are all installed with a pipe protection mechanism 6 .

[0043] During the actual production and processing process, the user can control the exhaust valve 42 to start through the console, and at the same time control the vacuum pump 4 to pre-extract the air in the gas mixing chamber 3; then, the user can input the required amount of nitrogen and sulfur hexafluoride through the console, and the console can control the first valve 13, the first flowmeter 12, the second valve 23, and the second flowmeter 22 to start, and add nitrogen and sulfur hexafluoride to the gas mixing chamber 3. When the amount of nitrogen and sulfur hexafluoride reaches the set amount, the console can control the first valve 13 and the second valve 23 to shut off, and stop adding nitrogen and sulfur hexafluoride to the gas mixing chamber 3; then, the user starts the inflation valve 52 through the console, and at the same time, the inflation pump 5 fills the gas mixing chamber 3 with nitrogen and sulfur hexafluoride mixed gas, which can facilitate the operation of distributing and filling nitrogen and sulfur hexafluoride, and improve the convenience of users in mixing and filling the mixed gas. At the same time, since the first air intake pipe 11, the second air intake pipe 21, the exhaust pipe 41 and the inflation pipe 51 are all equipped with a pipe protection mechanism 6, the impact of sudden pressure increase on the pipe during gas flow in the pipe can be reduced, thereby reducing the occurrence of pipe rupture.

[0044] It should be noted that in the embodiment of the present application, the first gas tank is used to store nitrogen, and the second gas tank is used to store sulfur hexafluoride. In some other usage scenarios, the first gas tank and the second gas tank may store other gases, which are not limited here.

[0045] The pipeline protection mechanism 6 includes a protection pipe 61 which is respectively connected to the first air intake pipe 11, the second air intake pipe 21, the exhaust pipe 41 and the charging pipe 51.

[0046] Reference Figure 2 A piston 62 is slidably connected inside the protective tube 61, and a sealing ring is installed between the side wall of the piston 62 and the tube wall of the protective tube 61; a sliding rod 63 is fixedly connected to the top of the piston 62, and a top plate 64 is fixedly connected to the top of the protective tube 61, and a sliding hole is opened on the top plate 64 for the sliding rod 63 to extend out; a spring 65 is sleeved on the sliding rod 63, and the two ends of the spring 65 are fixedly connected to the piston 62 and the top plate 64 respectively.

[0047] When the air pressure inside the first intake pipe 11, the second intake pipe 21, the exhaust pipe 41 and the inflation pipe 51 suddenly rises, the piston 62 is pushed up by the gas, which can reduce the pressure on the first intake pipe 11, the second intake pipe 21, the exhaust pipe 41 and the inflation pipe 51, and provide protection for the first intake pipe 11, the second intake pipe 21, the exhaust pipe 41 and the inflation pipe 51. When the air pressure inside the pipe drops, the spring 65 drives the piston 62 to reset, thereby achieving a continuous and effective pipe protection effect.

[0048] Reference Figure 2The protective tube 61 is equipped with: a piston 62 detection component, which is used to detect the rising speed of the piston 62 and output an alarm signal when the height of the piston 62 rises too quickly; a buzzer 66, which is fixedly installed on the top plate 64 and is connected to the signal output end of the piston 62 detection component, and is used to receive the alarm signal and emit a warning sound.

[0049] The piston 62 detection component and the buzzer 66 are used in combination with each other. When the piston 62 rises too fast, it can be determined that the air pressure inside the pipe is too high and there is a risk. The buzzer 66 can emit a warning sound to alert the user.

[0050] In the embodiment of the present application, the piston 62 detection component includes: a laser ranging sensor 67, which is fixedly mounted on the top plate 64 and arranged toward the piston 62, for detecting the distance between the piston 62 and outputting a sensing distance signal; a single-chip microcomputer, whose signal input end is connected to the signal output end of the laser ranging sensor 67, for receiving the sensing distance signal and calculating the rising speed of the piston 62, and outputting an alarm signal when the rising speed of the piston 62 is greater than a set value.

[0051] The laser distance measuring sensor 67 and the single chip microcomputer are used in combination to detect the rising speed of the piston 62.

[0052] Reference Figure 2 The ends of the first air inlet pipe 11 and the second air inlet pipe 21 near the gas mixing chamber 3 are respectively formed with U-shaped condensing pipe parts 7, and a low-temperature chamber 31 is fixedly installed on the outer wall of the gas mixing chamber 3, and the condensing pipe parts 7 are all located in the low-temperature chamber 31; the condensing pipe parts 7 are respectively connected to the drainage pipes 71, the drainage pipes 71 extend to the outside of the low-temperature chamber 31, and the drainage pipes 71 are respectively installed with drainage valves 72.

[0053] When the gas flows into the gas mixing chamber 3 through the condenser pipe part 7, the water vapor mixed in the gas is cooled, liquefied and concentrated in the condenser pipe part 7, which can avoid the occurrence of excessive water in the mixed gas. The user can regularly discharge the water in the condenser pipe part 7 through the drain valve 72.

[0054] Reference Figure 3 The low-temperature warehouse 31 includes an air inlet and an air outlet, and a fan 32 is installed at the air inlet. A refrigeration warehouse 34 is formed in the low-temperature warehouse 31. Two opposite refrigeration semiconductors 33 are fixedly installed in the refrigeration warehouse 34. The air outlet of the fan 32 is located between the two refrigeration semiconductors 33, and a cold air inlet is opened on the refrigeration warehouse 34, and the cold air inlet is opposite to the fan 32.

[0055] Cold energy can be generated by the refrigeration semiconductor 33, and the cold energy can be diffused into the low-temperature chamber 31 by the fan 32, so that the moisture carried in the gas can be liquefied.

[0056] The implementation principle of a mixed gas filling system in an embodiment of the present application is as follows: during the actual production and processing process, the user can control the exhaust valve 42 to start through the console, and at the same time control the vacuum pump 4 to pre-extract the air in the gas mixing chamber 3; then, the user can input the required amount of nitrogen and sulfur hexafluoride through the console, and the console can control the first valve 13, the first flowmeter 12, the second valve 23, and the second flowmeter 22 to start, and add nitrogen and sulfur hexafluoride to the gas mixing chamber 3. When the amount of nitrogen and the amount of sulfur hexafluoride reach the set amount, the console can control the first valve 13 and the second valve 23 to shut off, and stop adding nitrogen and sulfur hexafluoride to the gas mixing chamber 3; then, the user starts the inflation valve 52 through the console, and at the same time, the inflation pump 5 fills the gas mixing chamber 3 with nitrogen and sulfur hexafluoride mixed gas, which can facilitate the operation of distributing and filling nitrogen and sulfur hexafluoride, and improve the convenience of users in mixing and filling the mixed gas.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mixed gas filling system, characterized in that: The invention comprises a frame, on which a first gas storage tank (1), a second gas storage tank (2), a gas mixing chamber (3), a control console, a vacuum pump (4), and an air charging pump (5) are installed; a first air intake pipe (11) and a second air intake pipe (21) are respectively connected between the first gas storage tank (1), the second gas storage tank (2) and the gas mixing chamber (3); a first valve (13) and a first flow meter (12) are installed on the first air intake pipe (11); and a second valve (23) and a second flow meter (22) are installed on the second air intake pipe (21); An exhaust pipe (41) is provided between the gas mixing chamber (3) and the vacuum pump (4), and an exhaust valve (42) is installed on the exhaust pipe (41); an inflation pipe (51) is provided between the inflation pump (5) and the gas mixing chamber (3), and an inflation valve (52) is installed on the inflation pipe (51); and an outlet end of the inflation pipe (51) is detachably connected to a container to be inflated; The signal output end of the control console is signal-connected to the signal output ends of the first valve (13), the first flow meter (12), the second valve (23), the second flow meter (22), the vacuum pump (4), the inflation pump (5), the exhaust valve (42) and the inflation valve (52); The first air intake pipe (11), the second air intake pipe (21), the exhaust pipe (41) and the charging pipe (51) are all provided with a pipe protection mechanism (6).

2. A mixed gas filling system according to claim 1, characterized in that: The pipeline protection mechanism (6) comprises a protection pipe (61) which is respectively connected to the first air intake pipe (11), the second air intake pipe (21), the exhaust pipe (41) and the charging pipe (51); A piston (62) is slidably connected inside the protection tube (61), and a sealing ring is installed between the side wall of the piston (62) and the tube wall of the protection tube (61); The top of the piston (62) is fixedly connected to a slide rod (63), the top of the protection tube (61) is fixedly connected to a top plate (64), and the top plate (64) is provided with a slide hole for the slide rod (63) to extend out; The slide rod (63) is sleeved with a spring (65), and two ends of the spring (65) are fixedly connected to the piston (62) and the top plate (64) respectively.

3. A mixed gas filling system according to claim 2, characterized in that: The protection tube (61) is provided with: A piston (62) detection component, used to detect the rising speed of the piston (62) and output an alarm signal when the height of the piston (62) rises too fast; A buzzer (66) is fixedly mounted on the top plate (64) and is signal-connected to the signal output end of the piston (62) detection assembly, and is used to receive the alarm signal and emit a warning sound.

4. A mixed gas filling system according to claim 3, characterized in that: The piston (62) detection assembly comprises: A laser distance measuring sensor (67), fixedly mounted on the top plate (64), disposed toward the piston (62), and used for detecting the distance between the laser distance measuring sensor and the piston (62) and outputting a sensing distance signal; The single chip microcomputer has a signal input end connected to a signal output end of the laser distance measuring sensor (67), and is used to receive the sensing distance signal and calculate the rising speed of the piston (62), and output the alarm signal when the rising speed of the piston (62) is greater than a set value.

5. A mixed gas filling system according to claim 4, characterized in that: The ends of the first air inlet pipe (11) and the second air inlet pipe (21) close to the gas mixing chamber (3) are respectively formed with a U-shaped condensation pipe portion (7); a low-temperature chamber (31) is fixedly installed on the outer wall of the gas mixing chamber (3); and the condensation pipe portion (7) is located inside the low-temperature chamber (31); The condensing pipe part (7) is connected to a drainage pipe (71), the drainage pipe (71) extends to the outside of the low-temperature warehouse (31), and a drainage valve (72) is installed on the drainage pipe (71).

6. A mixed gas filling system according to claim 5, characterized in that: The low-temperature warehouse (31) comprises an air inlet and an air outlet, a fan (32) is installed at the air inlet, a refrigeration warehouse (34) is formed in the low-temperature warehouse (31), two opposite refrigeration semiconductors (33) are fixedly installed in the refrigeration warehouse (34), an air outlet of the fan (32) is located between the two refrigeration semiconductors (33), and a cold air inlet is opened on the refrigeration warehouse (34), and the cold air inlet is opposite to the fan (32).

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