CN114183689A - Automatic gas filling system and control method - Google Patents

Automatic gas filling system and control method Download PDF

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Publication number
CN114183689A
CN114183689A CN202111643980.3A CN202111643980A CN114183689A CN 114183689 A CN114183689 A CN 114183689A CN 202111643980 A CN202111643980 A CN 202111643980A CN 114183689 A CN114183689 A CN 114183689A
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CN
China
Prior art keywords
gas
valve
pipeline
hydraulic pump
filling
Prior art date
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Pending
Application number
CN202111643980.3A
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Chinese (zh)
Inventor
邓成柱
罗孝
钟开锋
王清明
张均华
罗美金
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Guangdong Southchina Special Gas Institute Co ltd
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Guangdong Southchina Special Gas Institute Co ltd
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Publication date
Application filed by Guangdong Southchina Special Gas Institute Co ltd filed Critical Guangdong Southchina Special Gas Institute Co ltd
Priority to CN202111643980.3A priority Critical patent/CN114183689A/en
Publication of CN114183689A publication Critical patent/CN114183689A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

An automatic gas filling system comprises a liquid storage tank, a hydraulic pump, a first temperature measurement controller, a vaporizer and a gas filling connecting device; the liquid storage tank is communicated with the hydraulic pump; a liquid outlet end of the hydraulic pump is provided with a reflux valve and a vaporization valve; the hydraulic pump can be communicated with the liquid storage tank through the return valve; the hydraulic pump may be in communication with the vaporizer through the vaporizing valve; the first temperature measurement controller is connected with the hydraulic pump; the first temperature measurement controller is used for measuring the liquid temperature of the hydraulic pump and controlling the liquid outlet end of the hydraulic pump to be communicated with the return valve or the vaporization valve; the vaporizer is used for vaporizing the liquid flowing in from the hydraulic pump; the gas outlet of the vaporizer is connected with the gas inlet of the gas filling connecting device through a main pipeline; the gas filling connection device is used for filling gas in the main pipeline into the gas tank to be filled.

Description

Automatic gas filling system and control method
Technical Field
The invention relates to the technical field of gas filling, in particular to an automatic gas filling system and a control method.
Background
At present, the most common high-purity gas split charging system in China adopts low-temperature low-pressure liquefied gas, and the liquefied gas is gasified into high-pressure gas by a vaporizer and then is refilled into a steel cylinder.
However, in the prior art, the liquefied gas is directly flowed from the liquid storage tank to the vaporizer to be vaporized into high-pressure gas, and then is filled into the cylinder. However, as the liquefied gas flows to the vaporizer, the temperature of the liquid gas rises, which reduces the cooling energy, so that the liquid gas absorbs too little heat after entering the vaporizer, which results in insufficient vaporization, and the gas in the filled cylinder mixes with a small amount of liquid gas, which results in impure gas in the cylinder.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic gas filling system comprises a liquid storage tank, a hydraulic pump, a first temperature measurement controller, a vaporizer and a gas filling connecting device; a liquid outlet of the liquid storage tank is communicated with a liquid inlet of the hydraulic pump; a liquid outlet end of the hydraulic pump is provided with a reflux valve and a vaporization valve; the liquid outlet end of the hydraulic pump can be communicated with the liquid return port of the liquid storage tank through the return valve; the liquid outlet end of the hydraulic pump can be communicated with the liquid inlet of the vaporizer through the vaporizing valve; the first temperature measurement controller is connected with the hydraulic pump; the first temperature measurement controller is used for measuring the liquid temperature of the hydraulic pump and controlling the liquid outlet end of the hydraulic pump to be communicated with the return valve or the vaporization valve; the vaporizer is used for vaporizing the liquid flowing in from the hydraulic pump; the gas outlet of the vaporizer is connected with the gas inlet of the gas filling connecting device through a main pipeline; the gas filling connection device is used for filling gas in the main pipeline into the gas tank to be filled.
Preferably, the gas filling connecting device comprises an air inlet pipeline assembly, a filling pipeline and a diversion pipeline assembly; the air inlet pipeline assembly comprises a filling main valve and an air inlet pipeline; the shunt pipeline assembly comprises a shunt pipeline and a shunt control valve; the air inlet end of the air inlet pipeline is communicated with the air outlet end of the main pipeline; the air outlet end of the air inlet pipeline is communicated with the air inlet end of the filling pipeline; the air outlet end of the filling pipeline is communicated with an air tank to be filled; the charging main valve is used for controlling the communication or the closing of the air inlet pipeline; the shunt control valve is used for controlling the communication or the closing of the filling pipeline.
Preferably, the gas filling connection device further comprises a vacuum line assembly; the vacuum pumping pipeline assembly comprises a vacuum pumping pipeline, a vacuum pump and a vacuum valve; one end of the evacuation pipeline is communicated with the filling pipeline, and the other end of the evacuation pipeline is communicated with the vacuum pump; the vacuum valve is used for controlling the connection or the closing of the evacuation pipeline.
Preferably, the gas-filled connecting device further comprises a gas-exchange line assembly; the ventilation pipeline assembly comprises a ventilation pipeline and a ventilation valve; one end of the air exchange pipeline is communicated with the filling pipeline, and the other end of the air exchange pipeline is communicated with an external air suction device; the ventilation valve is used for controlling the communication or the closing of the ventilation pipeline.
Preferably, a buffer component is further included; the buffer assembly comprises a buffer bottle group, a buffer control panel and a buffer valve; the buffer bottle group is communicated with the main pipeline through the buffer valve; the input end of the buffer control panel is connected with the hydraulic pump, and the output end of the buffer control panel is connected with the buffer valve.
Preferably, a detection component is further included; the detection assembly comprises a pressure gauge, a second thermometer and a hydraulic pump control box; the pressure gauge and the second thermometer are respectively arranged at an air outlet of the vaporizer; the pressure gauge is used for detecting the pressure of gas discharged into the main pipeline; the second thermometer is used for detecting the temperature of the gas discharged into the main pipeline; the input end of the hydraulic pump control box is respectively connected with the pressure gauge and the second thermometer; and the output end of the hydraulic pump control box is connected with a hydraulic pump.
A control method for automatic gas filling comprises the following steps: step A: conveying the liquid in the liquid storage tank to a hydraulic pump for pressurization and cooling; and B: the first temperature measurement controller measures the temperature of the liquid after pressurization and temperature reduction in the hydraulic pump; when the liquid temperature is lower than the set value of the first temperature measurement controller, the hydraulic pump is communicated with a vaporizer through a vaporization valve, so that the liquid is vaporized; otherwise, the hydraulic pump is communicated with a liquid return port of the liquid storage tank through the return valve, so that the liquid enters the hydraulic pump again for pressurization and cooling; and C: the liquid is vaporized into gas in the vaporizer, and then the gas is conveyed into a main pipeline; step D: the gas of the main conveying pipeline is filled into the gas tank to be filled through the gas filling connecting device.
To further illustrate, the step D further includes: step D1: before gas is filled into the gas tank to be filled, the filling main valve controls the gas inlet pipeline to be closed, and the vacuum valve controls the evacuation pipeline to be communicated, so that the vacuum pump evacuates the gas tank to be filled; step D2: after the evacuation is finished, closing the vacuum valve, and simultaneously opening the filling main valve, the flow dividing control valve and the gas exchange valve to exchange gas for the filling gas tank; step D2: after the air exchange is finished, the air exchange valve is closed, and the air tank to be filled is filled; step D3: after the filling of the gas tank to be filled is finished, closing the filling main valve, and simultaneously controlling the buffer panel to open the buffer valve to fill the buffer bottle group; and D4, after the buffer bottle group is filled, closing the buffer valve controlled by the buffer control panel, and ending the gas filling process.
Further, the step C further includes the following steps: and step C1, measuring the pressure and the temperature of the gas entering the main pipeline through the pressure gauge and the second thermometer, and controlling the hydraulic pump to stop working by the hydraulic pump control box when one of the pressure and the temperature reaches a set value in the hydraulic pump control box.
Compared with the prior art, one of the technical schemes has the following beneficial effects:
this application is through the temperature when first temperature measurement controller monitoring liquid vaporization, ensures that the gas can fully vaporize in the vaporizer to ensure to fill the gas and be pure gas.
Drawings
FIG. 1 is a schematic diagram of the connections of an automatic gas filling system according to one embodiment of the present invention;
FIG. 2 is a schematic view of the connection of an air intake conduit assembly, a charge conduit, a bypass conduit assembly, and a vacuum conduit assembly in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the connection of an air intake conduit assembly, a charge conduit, a bypass conduit assembly and a vent conduit assembly in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the connection of the gas-filled connecting means of one embodiment of the present invention;
fig. 5 is a schematic view of the connection of the buffer assembly to the automatic gas filling system according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.
In a preferred embodiment of the present application, as shown in fig. 1 to 5, an automatic gas filling system comprises a liquid storage tank 1, a hydraulic pump 2, a first temperature measurement controller 3, a vaporizer 4, and a gas filling connection device 5; a liquid outlet of the liquid storage tank 1 is communicated with a liquid inlet of the hydraulic pump 2; a liquid outlet end of the hydraulic pump 2 is provided with a return valve 21 and a vaporization valve 22; the liquid outlet end of the hydraulic pump 2 can be communicated with the liquid return port of the liquid storage tank 1 through the return valve 21; the liquid outlet end of the hydraulic pump 2 can be communicated with the liquid inlet of the carburetor 4 through the carburetor valve 22; the first temperature measurement controller 3 is connected with the hydraulic pump 2; the first temperature measurement controller 3 is used for measuring the liquid temperature of the hydraulic pump 2, and the first temperature measurement controller 3 is used for controlling the liquid outlet end of the hydraulic pump 2 to be communicated with the return valve 21 or the vaporization valve 22; the vaporizer 4 is used for vaporizing the liquid flowing in from the hydraulic pump 2; the gas outlet of the vaporizer 4 is connected with the gas inlet of the gas filling connecting device 5 through a main pipeline 6; the gas-filling connection 5 serves for filling gas in the main line 6 into the gas tank 50 to be filled.
In the present embodiment, the present application is explained in conjunction with the argon filling process, specifically, the temperature of the liquid argon stored in the liquid storage tank 1 is-186 ℃, and in order to ensure that the liquid argon can be sufficiently vaporized when entering the vaporizer 4, the temperature of the liquid argon needs to be further reduced to-196 ℃ when entering the vaporizer 4. Therefore, after the liquid argon flows out of the liquid storage tank 1, the liquid argon needs to enter the hydraulic pump 2 for pressurization and temperature reduction. After liquid argon carries out the pressure boost cooling, first temperature measurement controller 3 can carry out the temperature measurement to it, if liquid argon temperature after the pressure boost cooling has not dropped extremely during-196 ℃, first temperature measurement controller 3 then can control reflux valve 21 opens, makes hydraulic pump 2 with liquid storage tank 1's liquid mouth intercommunication returns to let liquid argon carry out the pressure boost cooling through hydraulic pump 2 once more. When the temperature of the liquid argon measured by the first temperature measurement controller is lower than or equal to-196 ℃, the first temperature measurement controller 3 closes the reflux valve 21 and stops the reflux of the liquid argon into the liquid storage tank 1. At the same time, the first temperature measurement controller 3 controls the vaporization valve 22 to open, so that liquid argon can enter the vaporizer 4 for vaporization. After the liquid argon is vaporized into argon gas, the argon gas is conveyed into the main pipeline 6, and then the argon gas is filled into the gas tank 50 to be filled through the conveying gas filling connecting device 5, so that the filling process of the argon gas is completed. In the present embodiment, the hydraulic pump 2 is a low-temperature high-pressure pump; the vaporizer 4 is a functional component purchased in the market; the first temperature measurement controller is also the prior art, and for example, a temperature measurer and a reversing valve are formed into functional components, the temperature measurer measures the temperature, and the reversing valve controls the hydraulic pump to be communicated with the return valve or the vaporization valve according to temperature parameters. The present application thus ensures that the gas is sufficiently vaporised in the vaporiser 4 by monitoring the temperature at which the liquid is vaporised by the first temperature measurement controller 3, thereby ensuring that the charge gas is pure gas.
More preferably, said gas-filling connection means 5 comprise an air intake conduit assembly 51, a filling conduit 53 and a branch conduit assembly 52; said intake conduit assembly 51 comprises a charge main valve 511 and an intake conduit 512; the shunt line assembly 52 includes a shunt line 522 and a shunt control valve 521; the air inlet end of the air inlet pipeline 512 is communicated with the air outlet end of the main pipeline 6; the air outlet end of the air inlet pipeline 512 is communicated with the air inlet end of the charging pipeline 53; the air outlet end of the filling pipeline 53 is communicated with the air tank 50 to be filled; the charging main valve 511 is used for controlling the connection or the closing of the air inlet pipeline 512; the bypass control valve 521 is used to control the communication or closing of the filling line 53.
Further, the gas-filled connecting device 5 also comprises a vacuum line assembly 54; the evacuation line assembly 54 includes an evacuation line, a vacuum pump 541, and a vacuum valve 542; one end of the evacuation pipeline is communicated with the charging pipeline 53, and the other end of the evacuation pipeline is communicated with the vacuum pump 541; the vacuum valve 542 is used to control the connection or closing of the evacuation line.
Furthermore, the gas-filled connecting means 5 also comprise a gas exchange line assembly 55; the ventilation line assembly 55 includes a ventilation line 552 and a ventilation valve 551; one end of the ventilation pipeline 552 is communicated with the charging pipeline 53, and the other end of the ventilation pipeline 552 is communicated with an external air suction device; the scavenging valve 551 is used to control the communication or closing of the scavenging line 552.
Specifically, before the argon gas in the main line 6 is filled into the gas tank 50 to be filled, the following process is also required: firstly, the gas filling connection device 5 controls the filling main valve 511 to be closed, so that argon cannot enter the gas tank 50 to be filled; the gas filling connection 5 then controls the vacuum valve 542 to open, so that the vacuum pump 541 evacuates the gas tank 50 to be filled, and a vacuum state is ensured in the gas tank 50 to be filled. After the evacuation is completed, the vacuum valve 542 is closed, and the charge main valve 511, the flow dividing control valve 521, and the scavenging valve 551 are opened. It should be noted that the opening degree of the flow dividing control valve 521 is smaller than that of the gas exchanging valve 551, so as to ensure that the gas flowing out from the gas exchanging line 552 in the gas tank 50 to be filled is faster than the gas flowing in from the gas filling line 53 in the gas tank 50 to be filled, so as to ventilate the gas tank 50 to be filled, and this is provided to discharge the gas still remaining in the gas tank 50 to be filled, so as to avoid the explosion or toxic gas generated by the mixing of the residual gas and the gas to be filled, thereby ensuring the safety of filling. After the gas exchange is completed, the gas exchange valve 551 is closed, and the filling main valve 511 and the flow dividing control valve 521 are all opened, so that the gas tank 50 to be filled is gas-filled. Illustratively, in the present embodiment, the gas filling connection device 5 is provided with two of the branch line assemblies 52, and in other embodiments, the gas filling connection device 5 is provided with at least one of the branch line assemblies 52. The two shunt pipeline assemblies 52 are arranged in the embodiment, so that when the other one of the shunt pipeline assemblies 52 is filled quickly, a new gas tank 50 to be filled can be filled through the other one of the shunt pipeline assemblies 52, the filling speed is increased, and the filling efficiency is improved.
Specifically, the device further comprises a buffer component; the buffer assembly comprises a buffer bottle group 61, a buffer control panel 62 and a buffer valve 63; the buffer cylinder group 61 is communicated with the main pipeline 6 through the buffer valve 63; the input end of the buffer control panel 62 is connected with the hydraulic pump 2, and the output end of the buffer control panel 62 is connected with the buffer valve 63. Since the liquid argon is converted into argon gas and needs to be pressurized and cooled by the hydraulic pump 2, a certain time is needed to wait for the start of filling, and the buffer assembly is arranged. Before the last filling is finished, the buffer control panel 62 can open the buffer valve 63, so that the buffer bottle group 61 is communicated with the main pipeline 6, and the gas in the main pipeline 6 is filled into the buffer bottle group 61 for standby. Therefore, during the next filling, when the liquid does not reach the set value, the buffer control panel 62 can open the buffer valve 63, and the gas in the buffer bottle group 61 is preferentially conveyed to the gas tank 50 to be filled for filling, instead of starting filling until the gas is cooled to the set value, so that the filling speed is increased, and the filling efficiency is improved.
Further, the device also comprises a detection component; the detection assembly comprises a pressure gauge 41, a second temperature gauge 42 and a hydraulic pump control box 43; the pressure gauge 41 and the second thermometer 42 are respectively arranged at an air outlet of the vaporizer 4 and are used for detecting the pressure and the temperature of the gas discharged into the main pipeline 6; the input end of the hydraulic pump control box 43 is respectively connected with the pressure gauge 41 and the second thermometer 42; the output end of the hydraulic pump control box 43 is connected with the hydraulic pump 2. In order to ensure that the gas is safe, the pressure gauge 41 and the second temperature gauge 42 are arranged to detect the pressure or temperature of the gas in the main exhaust line 6. When the pressure gauge 41 or the second temperature gauge 42 detects that the pressure or the temperature of the gas exceeds the safe filling value, the pressure gauge 41 or the second temperature gauge 42 feeds the value back to the hydraulic pump control box 43, the hydraulic control box sends out a warning signal, and the hydraulic pump 2 stops working, so that the safe gas filling is ensured. The hydraulic control box is a functional component purchased in the market.
A control method for automatic gas filling comprises the following steps:
step A: conveying the liquid in the liquid storage tank 1 to the hydraulic pump 2 for pressurization and cooling; and B: the first temperature measurement controller 3 measures the temperature of the liquid pressurized and cooled in the hydraulic pump 2; when the liquid temperature is lower than the set value of the first temperature measurement controller 3, the hydraulic pump 2 is communicated with the vaporizer 4 through the vaporizing valve 22, so that the liquid is vaporized; otherwise, the hydraulic pump 2 is communicated with a liquid return port of the liquid storage tank 1 through the return valve 21, so that the liquid enters the hydraulic pump 2 again for pressurization and temperature reduction; and C: the liquid is vaporized into gas in the vaporizer 4, and the gas is conveyed into the main pipeline 6; step D: the gas of the main delivery line 6 is filled into the gas tank 50 to be filled through the gas filling connection 5.
To further illustrate, the step D further includes: step D1: before gas is filled into the gas tank 50 to be filled, the filling main valve 511 controls the gas inlet pipeline 512 to be closed, and the vacuum valve 542 controls the communication of the evacuation pipeline, so that the vacuum pump 541 evacuates the gas tank 50 to be filled; step D2: after the evacuation is completed, the vacuum valve 542 is closed, and the filling main valve 511, the diversion control valve 521 and the scavenging valve 551 are opened at the same time, so that the filling gas tank is scavenged; step D2: after ventilation is finished, the ventilation valve 551 is closed, and the gas tank 50 to be filled is filled; step D3: after the filling of the gas tank 50 is finished, the filling main valve 511 is closed, and simultaneously the buffer panel is controlled to open the buffer valve 63, so as to fill the buffer bottle group 61; in step D4, after the buffer bottle set 61 is filled, the buffer valve 63 controlled by the buffer control panel 62 is closed, and the gas filling process is finished.
Further, the step C further includes the following steps: and C1, measuring the pressure and temperature of the gas introduced into the main line 6 by the pressure gauge 41 and the second temperature gauge 42, and when one of the pressure and the temperature reaches a set value in the hydraulic pump control box 43, the hydraulic pump control box 43 controls the hydraulic pump 2 to stop operating.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (9)

1. An automatic gas filling system is characterized by comprising a liquid storage tank, a hydraulic pump, a first temperature measurement controller, a vaporizer and a gas filling connecting device;
a liquid outlet of the liquid storage tank is communicated with a liquid inlet of the hydraulic pump;
a liquid outlet end of the hydraulic pump is provided with a reflux valve and a vaporization valve;
the liquid outlet end of the hydraulic pump is connected with the liquid return port of the liquid storage tank through the return valve;
the liquid outlet end of the hydraulic pump is connected with the liquid inlet of the vaporizer through the vaporizing valve;
the first temperature measurement controller is connected with the hydraulic pump;
the first temperature measurement controller is used for measuring the liquid temperature of the hydraulic pump and controlling the liquid outlet end of the hydraulic pump to be communicated with the return valve or the vaporization valve;
the vaporizer is used for vaporizing the liquid flowing in from the hydraulic pump;
the gas outlet of the vaporizer is connected with the gas inlet of the gas filling connecting device through a main pipeline;
the gas filling connection device is used for filling gas in the main pipeline into the gas tank to be filled.
2. The automatic gas filling system of claim 1, wherein the gas filling connection means comprises a gas inlet line assembly, a filling line and a branch line assembly;
the air inlet pipeline assembly comprises a filling main valve and an air inlet pipeline;
the shunt pipeline assembly comprises a shunt pipeline and a shunt control valve;
the air inlet end of the air inlet pipeline is communicated with the air outlet end of the main pipeline;
the air outlet end of the air inlet pipeline is communicated with the air inlet end of the filling pipeline;
the air outlet end of the filling pipeline is communicated with an air tank to be filled;
the charging main valve is used for controlling the communication or the closing of the air inlet pipeline;
the shunt control valve is used for controlling the communication or the closing of the filling pipeline.
3. An automatic gas filling system according to claim 2, wherein said gas filling connection means further comprises a vacuum line assembly;
the vacuum pumping pipeline assembly comprises a vacuum pumping pipeline, a vacuum pump and a vacuum valve;
one end of the evacuation pipeline is communicated with the filling pipeline, and the other end of the evacuation pipeline is communicated with the vacuum pump;
the vacuum valve is used for controlling the connection or the closing of the evacuation pipeline.
4. An automatic gas filling system according to claim 2, wherein said gas filling connection means further comprises a gas exchange line assembly;
the ventilation pipeline assembly comprises a ventilation pipeline and a ventilation valve;
one end of the air exchange pipeline is communicated with the filling pipeline, and the other end of the air exchange pipeline is communicated with an external air suction device;
the ventilation valve is used for controlling the communication or the closing of the ventilation pipeline.
5. An automatic gas filling system according to claim 1, further comprising a buffer assembly;
the buffer assembly comprises a buffer bottle group, a buffer control panel and a buffer valve;
the buffer bottle group is communicated with the main pipeline through the buffer valve;
the input end of the buffer control panel is connected with the hydraulic pump, and the output end of the buffer control panel is connected with the buffer valve.
6. An automatic gas filling system according to claim 1, further comprising a detection assembly;
the detection assembly comprises a pressure gauge, a second thermometer and a hydraulic pump control box;
the pressure gauge and the second thermometer are respectively arranged at an air outlet of the vaporizer;
the pressure gauge is used for detecting the pressure of gas discharged into the main pipeline;
the second thermometer is used for detecting the temperature of the gas discharged into the main pipeline;
the input end of the hydraulic pump control box is respectively connected with the pressure gauge and the second thermometer;
and the output end of the hydraulic pump control box is connected with a hydraulic pump.
7. A control method for automatic gas filling is characterized by comprising the following steps:
step A: conveying the liquid in the liquid storage tank to a hydraulic pump for pressurization and cooling;
and B: the first temperature measurement controller measures the temperature of the liquid after pressurization and temperature reduction in the hydraulic pump;
when the liquid temperature is lower than the set value of the first temperature measurement controller, the hydraulic pump is communicated with a vaporizer through a vaporization valve, so that the liquid is vaporized; otherwise, the hydraulic pump is communicated with a liquid return port of the liquid storage tank through the return valve, so that the liquid enters the hydraulic pump again for pressurization and cooling;
and C: the liquid is vaporized into gas in the vaporizer, and then the gas is conveyed into a main pipeline;
step D: the gas of the main conveying pipeline is filled into the gas tank to be filled through the gas filling connecting device.
8. The method of claim 7, wherein step D further comprises:
step D1: before gas is filled into the gas tank to be filled, the filling main valve controls the gas inlet pipeline to be closed, and the vacuum valve controls the evacuation pipeline to be communicated, so that the vacuum pump evacuates the gas tank to be filled;
step D2: after the evacuation is finished, closing the vacuum valve, and simultaneously opening the filling main valve, the flow dividing control valve and the gas exchange valve to exchange gas for the filling gas tank;
step D2: after the air exchange is finished, the air exchange valve is closed, and the air tank to be filled is filled;
step D3: after the filling of the gas tank to be filled is finished, closing the filling main valve, and simultaneously controlling the buffer panel to open the buffer valve to fill the buffer bottle group;
and D4, after the buffer bottle group is filled, closing the buffer valve controlled by the buffer control panel, and ending the gas filling process.
9. The method of claim 7, wherein step C further comprises the steps of:
and step C1, measuring the pressure and the temperature of the gas entering the main pipeline through the pressure gauge and the second thermometer, and controlling the hydraulic pump to stop working by the hydraulic pump control box when one of the pressure and the temperature reaches a set value in the hydraulic pump control box.
CN202111643980.3A 2021-12-29 2021-12-29 Automatic gas filling system and control method Pending CN114183689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111643980.3A CN114183689A (en) 2021-12-29 2021-12-29 Automatic gas filling system and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111643980.3A CN114183689A (en) 2021-12-29 2021-12-29 Automatic gas filling system and control method

Publications (1)

Publication Number Publication Date
CN114183689A true CN114183689A (en) 2022-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111643980.3A Pending CN114183689A (en) 2021-12-29 2021-12-29 Automatic gas filling system and control method

Country Status (1)

Country Link
CN (1) CN114183689A (en)

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