CN219933705U - Safety control system for filling gas cylinder - Google Patents

Abstract

The utility model relates to a safety control system for filling a gas cylinder, which relates to the technical field of gas filling, and comprises a liquid supply pipeline, a vaporization pipeline and a controller, wherein the liquid supply pipeline is connected with the vaporization pipeline; the liquid supply pipeline is in electrical signal connection with the controller, the vaporization pipeline is in electrical signal connection with the controller, and the controller controls the liquid supply pipeline to supply liquid to the vaporization pipeline and collect liquid gas after vaporization; the vaporization pipeline comprises a bleeding valve and a gas storage tank, and when the controller controls the liquid supply pipeline to convey liquid gas to the vaporization pipeline, part of the liquid gas is vaporized along Cheng Xire in the process of conveying the liquid gas to the vaporization pipeline, and when the liquid gas passes through the bleeding valve, the controller controls the bleeding valve to discharge the vaporized gaseous gas and store the vaporized gaseous gas in the gas storage tank. The utility model can recycle the liquid gas vaporized in the vaporization pipeline, thereby reducing the technical effect of gas waste.

Description

Safety control system for filling gas cylinder

Technical Field

The utility model relates to the technical field of gas filling, in particular to a safety control system for gas cylinder filling.

Background

In the process of storing and transporting various gases, in order to save transportation cost, the gases are often required to be gasified after being liquefied, a gas pressurizing injection sled is required to be used in the process, and the liquid gas is gasified, and the gas is generally composed of a pneumatic booster pump, a gas source processing unit, a low-pressure gas pipeline, a high-pressure gas pipeline, corresponding pipe valve members, a filter, a pressure gauge and other accessories.

At present, a device is often used for collecting liquid gas by vaporization, and comprises a liquid supply pipeline, a vaporization pipeline and a controller, wherein the liquid supply pipeline and the vaporization pipeline are electrically connected with the controller; the liquid supply pipeline is connected with the vaporization pipeline and can supply liquid gas to the vaporization pipeline, the liquid supply pipeline comprises a vaporizer and a bleeding valve, the bleeding valve is arranged in front of the vaporizer in the whole vaporization pipeline, and the temperature of the conveying equipment is higher than that of liquefied gas in the process of conveying the liquid gas to the vaporizer end, so that part of the liquefied gas absorbs heat and vaporizes in the process of conveying the liquefied gas to the vaporization pipeline, the pressure change of part of the equipment in the vaporization pipeline is caused to influence the normal work of the vaporizer, and therefore, the vaporized liquid gas can be discharged through the bleeding valve.

In the use process of the vaporization pipeline, the vaporized liquid gas is required to be discharged through the bleeding valve, but in the discharging process, most of discharged gas is directly discharged into the air, so that the air is polluted, and meanwhile, the energy waste is also caused due to the fact that the device works for a large amount for a long time.

Disclosure of Invention

In order to recover the liquid gas vaporized in the vaporization pipeline, the utility model provides a safety control system for filling a gas cylinder.

The utility model provides a safety control system for filling a gas cylinder, which adopts the following technical scheme:

the safety control system for filling the gas cylinder comprises a liquid supply pipeline, a vaporization pipeline and a controller, wherein the liquid supply pipeline is in electrical signal connection with the controller, and the controller is in electrical signal connection with the liquid supply pipeline; the evaporation pipeline comprises a first evaporation pipe, a diffusion valve, a vaporizer, a second evaporation pipe, a collecting tank, an air storage tank and a third evaporation pipe, one end of the first evaporation pipe is connected with the liquid supply pipeline, the other end of the first evaporation pipe is connected with one end of the vaporizer, and the vaporizer is in electric signal connection with the controller; the other end of the vaporizer is connected with one end of the second vaporizing tube, and the other end of the second vaporizing tube is connected with the collecting tank; the bleeding valve is arranged on the first vaporization pipe and is in electrical signal connection with the controller; the gas outlet of the bleeding valve is connected with one end of the third vaporization pipe, and the other end of the third vaporization pipe is connected with the gas storage tank.

By adopting the technical scheme: during operation, the controller controls the liquid supply pipeline to convey liquid gas into the vaporizer, the gas is vaporized in the vaporizer and then discharged into the collecting tank, and as part of liquid gas is higher than the temperature of the liquid gas in the first vaporizing pipe in the process of conveying the liquid gas to the vaporizer end, the part of liquid gas is vaporized along Cheng Xire in the process of conveying the liquid gas to the vaporizing pipeline, so that the air pressure in the first vaporizing pipe is increased, the normal operation of the whole device is influenced, and at the moment, the controller controls the discharge valve to operate, and the gaseous gas in the first vaporizing pipe is discharged through the third vaporizing pipe and stored in the air storage tank. The system can discharge vaporized gas into the gas storage tank, reduces the direct discharge of certain harmful gases to air or human bodies, and simultaneously effectively reduces the waste of energy sources due to the long-term massive work of the device.

Optionally, the vaporization pipeline includes a liquid outlet temperature sensor, the liquid outlet temperature sensor is arranged on the first vaporization pipe, and the liquid outlet temperature sensor is in electrical signal connection with the controller.

By adopting the technical scheme: through the measurement of liquid outlet temperature sensor, when the controller detects that there is gas in the first evaporating pipe, the controller controls the relief valve to open, discharges the gas after the vaporization from the relief valve, ensures that the gas entering the vaporizer is all liquid, reduces the probability that the pressure between the first evaporating pipe and the vaporizer is overlarge due to the existence of gas in the first evaporating pipe, and then ensures the working safety of the vaporizer and the first evaporating pipe, simultaneously ensures that the work of the relief valve is more accurate, and improves the overall working efficiency of the equipment.

Optionally, the vaporizing pipeline further comprises a first one-way valve, and the first one-way valve is arranged on the third vaporizing pipe.

By adopting the technical scheme: when the bleed valve continuously discharges the vaporization gas into the gas storage tank, the phenomenon that the gas discharged by the bleed valve cannot be smoothly discharged into the gas storage tank due to too small pressure can occur along with the continuous increase of the pressure in the gas storage tank, and the probability that the gas discharged by the bleed valve cannot be smoothly stored into the gas storage tank can be reduced by arranging the first one-way valve, so that the stability of equipment is enhanced.

Optionally, the vaporization pipeline still includes compressor, solenoid valve and fourth vaporization pipe, the gas holder with the one end of solenoid valve is connected, the other end of solenoid valve with the one end of fourth vaporization pipe is connected, the other end of fourth vaporization pipe the compressor is connected, the compressor with the controller electrical signal is connected, the inside collection chamber that is provided with of compressor.

By adopting the technical scheme: when the gas stored in the gas storage tank reaches a certain amount, the controller can control the electromagnetic valve to be opened, and then control the compressor to compress the gas in the gas storage tank and store the gas in the collecting cavity.

Optionally, the liquid supply pipeline includes the booster pump, first vaporization pipe with the liquid outlet on the booster pump is connected, the vaporization pipeline still includes power pump and second check valve, the collection chamber keep away from the one end of gas holder with the one end of power pump is connected, the power pump with the controller electrical signal is connected, the other end of power pump with the one end of second check valve is connected, the other end of second check valve with the booster pump is connected.

By adopting the technical scheme: after the controller controls the compressor to change gaseous gas into liquid, the controller can control the power pump to work and discharge the liquid gas in the collecting cavity into the booster pump, so that the gas discharged by the discharge valve can be reused, and the waste of energy sources is reduced.

Optionally, the vaporization pipeline further comprises a gas tank pressure gauge, the gas tank pressure gauge is arranged on the gas tank, and the gas tank pressure gauge is in electrical signal connection with the controller.

By adopting the technical scheme: along with the continuous gaseous gas that fills in the gas holder of bleeder valve, the pressure in the gas holder rises, the pressure in the gas holder manometer real-time detection gas holder simultaneously, and give the controller with the numerical value transmission, when the controller detects the numerical value of gas holder manometer and reach preset numerical value, the controller control solenoid valve is opened, the work of controller control compressor, the compressor compresses into liquid with the gaseous gas in the gas holder, store in the collecting chamber after, when the numerical value of gas holder manometer falls below preset threshold value, the controller control solenoid valve and compressor are closed in proper order, afterwards the controller control power pump is opened, carry liquid gas to the booster pump in, after carrying, the controller control power pump is closed. By arranging the air storage tank pressure gauge, when the pressure in the air storage tank reaches a certain value, the controller controls the compressor to work, so that the gas exhausted by the exhaust valve can smoothly pass through the first one-way valve, the difficulty in exhausting the gas exhausted by the exhaust valve due to overlarge pressure in the air storage tank is reduced, the influence on the cooling of the booster pump caused by incapability of exhausting the gas in the second muffler is further caused, and the accuracy of the accurate work of the booster pump is improved; meanwhile, in the process of adding the liquid gas in the collecting cavity into the booster pump, heat loss is also caused along the way, so that part of the liquid gas absorbs heat and is vaporized in the conveying process of the liquid gas, the gas is also present in the booster pump, and the working temperature is reduced, but the gas in the booster pump is only required to be led into the gas storage tank again by arranging a gas storage tank manometer and a controller in a mode of leading the liquid gas in the compressor into the booster pump once, and the next compression is waited, so that the influence on the working efficiency of the booster pump is reduced to the minimum, and the working efficiency of the whole booster pry system is ensured; finally, the discharged gaseous gas is secondarily led into the booster pump, so that the method has important significance in improving the energy utilization rate and reducing the equipment cost in the long-term frequent work of the booster pump.

Optionally, the second vaporizing tube is further provided with a post-vaporization pressure sensor, and the post-vaporization pressure sensor is in electrical signal connection with the controller.

By adopting the technical scheme: when the pressure in the second vaporizing tube is detected to be too large by the pressure sensor after vaporization, the controller controls the liquid supply pipeline to stop working and replace the collecting tank, the pressure in the vaporizer is always kept in a reasonable pressure range of the vaporizer by the pressure sensor after vaporization, and the influence of the gas pressure problem on the vaporizer is further reduced.

Optionally, a mechanical safety valve is further arranged on the second vaporization pipe.

By adopting the technical scheme: when the pressure in the second vaporizing tube is too high, the mechanical safety valve discharges the redundant gas in the second vaporizing tube, so that the pressure in the vaporizer is ensured to be kept in a normal pressure range.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through setting up the gas holder, during operation, the liquid gas is carried to the vaporizer to the controller control feed liquid pipeline, gas is in the vaporizer after being vaporized in the collection tank, because partial liquid gas is in the in-process of carrying to the vaporizer end, the temperature in the first vaporization pipe is higher than liquid gas's temperature, this partial liquid gas is in carrying along Cheng Xire in the vaporization pipeline vaporization, and then lead to the internal atmospheric pressure increase of first vaporization pipe, and then influence the normal work of whole device, the controller control diffusion valve work this moment, discharge the gaseous gas in the first vaporization pipe through the third vaporization pipe, and store in the gas holder. The system can discharge vaporized gas into the gas storage tank, reduces the direct discharge of certain harmful gases to air or human bodies, and simultaneously effectively reduces the waste of energy sources due to the long-term massive work of the device.

2. Through setting up power pump and second check valve, after the compressor is changed gaseous gas into liquid to the controller control compressor, the liquid gas in the collecting chamber is discharged to the booster pump in the work of controller steerable power pump for the exhaust gas of bleeder valve can reuse, has reduced the waste to the energy.

3. Through setting up the gas holder manometer, along with the continuous gaseous gas that fills to the gas holder in the bleeder valve, the pressure in the gas holder rises, the pressure in the gas holder manometer real-time detection gas holder simultaneously, and give the controller with the numerical value transfer, when the controller detects the numerical value of gas holder manometer and reachs preset numerical value, the controller control solenoid valve is opened, the work of controller control compressor, the compressor compresses gaseous gas in the gas holder into liquid, store the collection intracavity after, when the numerical value of gas holder manometer falls below preset threshold value, controller control solenoid valve and compressor are closed in proper order, afterwards the controller control power pump is opened, carry liquid gas to the booster pump in, after carrying, controller control power pump is closed. By arranging the air storage tank pressure gauge, when the pressure in the air storage tank reaches a certain value, the controller controls the compressor to work, so that the gas exhausted by the exhaust valve can smoothly pass through the first one-way valve, the difficulty in exhausting the gas exhausted by the exhaust valve due to overlarge pressure in the air storage tank is reduced, the influence on the cooling of the booster pump caused by incapability of exhausting the gas in the second muffler is further caused, and the accuracy of the accurate work of the booster pump is improved; meanwhile, in the process of adding the liquid gas in the collecting cavity into the booster pump, heat loss is also caused along the way, so that part of the liquid gas absorbs heat and is vaporized in the conveying process of the liquid gas, the gas is also present in the booster pump, and the working temperature is reduced, but the gas in the booster pump is only required to be led into the gas storage tank again by arranging a gas storage tank manometer and a controller in a mode of leading the liquid gas in the compressor into the booster pump once, and the next compression is waited, so that the influence on the working efficiency of the booster pump is reduced to the minimum, and the working efficiency of the whole booster pry system is ensured; finally, the discharged gaseous gas is secondarily led into the booster pump, so that the method has important significance in improving the energy utilization rate and reducing the equipment cost in the long-term frequent work of the booster pump.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present utility model.

Reference numerals illustrate: 1. a liquid supply pipeline; 2. a vaporization line; 4. a controller; 11. a booster pump; 111. a liquid outlet; 21. a first vaporizing tube; 22. a bleed valve; 221. an air outlet; 23. a vaporizer; 24. a second vaporizing tube; 25. a collection tank; 26. a gas storage tank; 27. a third vaporization tube; 28. a liquid outlet temperature sensor; 29. a first one-way valve; 30. a compressor; 300. a collection chamber; 31. an electromagnetic valve; 32. a fourth vaporization tube; 33. a power pump; 34. a second one-way valve; 35. a gas tank pressure gauge; 36. a pressure sensor after vaporization; 37. a mechanical safety valve.

Detailed Description

The present utility model is described in further detail below in conjunction with fig. 1.

Referring to fig. 1, a liquid supply pipeline 1 comprises a booster pump 11, the liquid supply pipeline 1 is connected with the booster pump 11, the liquid supply pipeline 1 is electrically connected with a controller 4, a vaporization pipeline 2 comprises a first vaporization pipe 21, a liquid outlet temperature sensor 28, a diffusion valve 22, a vaporizer 23, a second vaporization pipe 24, a post-vaporization pressure sensor 36, a mechanical safety valve 37, a collection tank 25 and a first one-way valve 29, one end of the first vaporization pipe 21 is connected with a liquid outlet 111 of the booster pump 11, the other end of the first vaporization pipe 21 is connected with one end of the vaporizer 23, and the vaporizer 23 is electrically connected with the controller 4; the air outlet 221 of the air diffusing valve 22 is connected with one end of the first vaporizing tube 21, the other end of the third vaporizing tube 27 is connected with the air storage tank 26, and the first one-way valve 29 is arranged on the third vaporizing tube 27; the liquid outlet temperature sensor 28 is arranged on the first vaporizing tube 21, and the liquid outlet temperature sensor 28 is in electrical signal connection with the controller 4; the other end of the vaporizer 23 is connected with one end of a second vaporizing tube 24, and the other end of the second vaporizing tube 24 is connected with a collecting tank 25; the vaporized pressure sensor 36 is arranged on the second vaporizing tube 24, and the vaporized pressure sensor 36 is in electrical signal connection with the controller 4; the second vaporizing tube 24 is also provided with a mechanical safety valve 37.

In operation, the controller 4 controls the booster pump 11 to deliver liquid gas into the vaporizer 23, and the controller 4 simultaneously controls the vaporizer to operate, so that the liquid gas is vaporized in the vaporizer 23, and finally the vaporized gas is discharged into the collecting tank 25 for collection.

Since part of the liquid gas is endothermic and vaporized in the first vaporizing tube 21 during the process of being delivered to the vaporizer 23, the pressure in the first vaporizing tube 21 is increased, and the normal operation of the whole device is affected, and the controller 4 controls the bleed valve 22 to operate, so that the gaseous gas in the first vaporizing tube 21 is discharged through the third vaporizing tube 27 and stored in the gas storage tank 26. By the measurement of the liquid outlet temperature sensor 28, when the controller 4 detects that the gas exists in the first vaporizing tube 21, the controller 4 controls the relief valve 22 to be opened, the vaporized gas is discharged from the relief valve 22, the gas entering the vaporizer 23 is ensured to be in a liquid state, the probability that the pressure between the first vaporizing tube 21 and the vaporizer 23 is overlarge due to the existence of the gas in the first vaporizing tube 21 is reduced, and the working safety of the vaporizer 23 and the first vaporizing tube 21 is further ensured. When the purge valve 22 continuously discharges the vaporized gas into the gas storage tank 26, the phenomenon that the gas discharged from the purge valve 22 cannot be smoothly discharged into the gas storage tank 26 due to too small pressure may occur due to the too large pressure in the gas storage tank 26 as the pressure in the gas storage tank 26 is continuously increased, and the first check valve 29 is provided, so that the probability that the gas discharged from the purge valve 22 cannot be smoothly stored into the gas storage tank 26 can be reduced, and the stability of the device is enhanced.

When the second vaporizing tube 24 is too much vaporized, it means that the vaporized gas fills the collecting tank 25, if vaporization is continued, the internal pressure of the vaporizer 23 may be too high, and the vaporizer 23 may be damaged, so when the pressure sensor 36 detects that the pressure in the second vaporizing tube 24 is too high, the controller 4 controls the liquid supply pipeline 1 to stop working, and replaces the collecting tank 25, the pressure sensor 36 after vaporization always keeps the pressure in the vaporizer 23 within a reasonable pressure range of the vaporizer 23, and further the influence of the gas pressure problem on the vaporizer 23 is reduced. When the pressure in the second vaporizing tube 24 is too high, the mechanical safety valve discharges the excessive gas in the second vaporizing tube 24, thereby ensuring that the pressure in the vaporizer 23 is kept within the normal pressure range.

The system can discharge vaporized gas into the gas storage tank 26, reduces the direct discharge of certain harmful gases to the air or human body, and simultaneously effectively reduces the waste of energy sources due to the long-term massive work of the device.

The vaporization pipeline 2 further comprises a compressor 30, an electromagnetic valve 31, a fourth vaporization pipe 32, a power pump 33, a second one-way valve 34 and an air storage tank pressure gauge 35, the air storage tank 26 is connected with one end of the electromagnetic valve 31, the other end of the electromagnetic valve 31 is connected with one end of the fourth vaporization pipe 32, the compressor 30 at the other end of the fourth vaporization pipe 32 is connected, the compressor 30 is electrically connected with the controller 4, and a collection cavity 300 is arranged inside the compressor 30; one end of the collecting cavity 300, which is far away from the air storage tank 26, is connected with one end of the power pump 33, the power pump 33 is electrically connected with the controller 4, the other end of the power pump 33 is connected with one end of the second one-way valve 34, and the other end of the second one-way valve 34 is connected with the booster pump 11; the air tank pressure gauge 35 is provided on the air tank 26, and the air tank pressure gauge 35 is electrically connected with the controller 4.

When the gas stored in the gas storage tank 26 reaches a certain amount, the controller 4 can control the electromagnetic valve 31 to be opened, and then control the compressor 30 to compress the gas in the gas storage tank 26 and store the compressed gas in the collection cavity 300; after the controller 4 controls the compressor 30 to change the gaseous gas into the liquid state, the controller 4 can control the power pump 33 to work so as to discharge the liquid gas in the collecting cavity 300 into the booster pump 11, so that the gas discharged by the discharge valve 22 can be reused, and the waste of energy sources is reduced.

With the continuous filling of the gas in the gas tank 26 by the bleed valve 22, the pressure in the gas tank 26 rises, meanwhile, the gas tank pressure gauge 35 detects the pressure in the gas tank 26 in real time and transmits the value to the controller 4, when the controller 4 detects that the value of the gas tank pressure gauge 35 reaches the preset value, the controller 4 controls the solenoid valve 31 to open, the controller 4 controls the compressor 30 to work, the compressor 30 compresses the gas in the gas tank 26 into a liquid state and stores the liquid state in the collecting cavity 300, when the value of the gas tank pressure gauge 35 is reduced below the preset threshold, the controller 4 controls the solenoid valve 31 and the compressor 30 to be sequentially closed, then the controller 4 controls the power pump 33 to be started, the liquid state gas is conveyed into the booster pump 11, and after conveying is finished, the controller 4 controls the power pump 33 to be closed. By arranging the air storage tank pressure gauge 35, when the pressure in the air storage tank 26 reaches a certain value, the controller 4 controls the compressor 30 to work, so that the air discharged by the air discharge valve 22 can smoothly pass through the first one-way valve 29, the difficulty in discharging the air discharged by the air discharge valve 22 due to the overlarge pressure in the air storage tank 26 is reduced, and the influence on the temperature reduction of the booster pump 11 caused by the incapacity of discharging the air in the second muffler is further caused, so that the accuracy of the accurate work of the booster pump 11 is improved; meanwhile, in the process of adding the liquid gas in the collecting cavity 300 into the booster pump 11, heat loss is also caused along the way, so that part of the liquid gas absorbs heat and is vaporized in the conveying process of the liquid gas, and the gas in the booster pump 11 is also caused, so that the working temperature is reduced, but the gas in the booster pump 11 is only required to be reintroduced into the gas storage tank 26 by arranging the gas storage tank pressure gauge 35 and the controller 4 in a mode of introducing the liquid gas in the compressor 30 into the booster pump 11 once, and the next compression is waited, so that the influence on the working efficiency of the booster pump 11 is reduced to the minimum, and the working efficiency of the whole booster pry system is ensured; finally, the discharged gas is secondarily led into the booster pump 11, so that the method has important significance in improving the energy utilization rate and reducing the equipment cost in the long-term frequent work of the booster pump 11.

The implementation principle of the safety control system for filling the gas cylinder in the embodiment of the utility model is as follows:

in operation, the controller 4 controls the booster pump 11 to deliver liquid gas into the vaporizer 23, and the controller 4 simultaneously controls the vaporizer to operate, so that the liquid gas is vaporized in the vaporizer 23, and finally the vaporized gas is discharged into the collecting tank 25 for collection.

Since part of the liquid gas is endothermic and vaporized in the first vaporizing tube 21 during the process of being delivered to the vaporizer 23, the pressure in the first vaporizing tube 21 is increased, and the normal operation of the whole device is affected, and the controller 4 controls the bleed valve 22 to operate, so that the gaseous gas in the first vaporizing tube 21 is discharged through the third vaporizing tube 27 and stored in the gas storage tank 26. By the measurement of the liquid outlet temperature sensor 28, when the controller 4 detects that the gas exists in the first vaporizing tube 21, the controller 4 controls the relief valve 22 to be opened, the vaporized gas is discharged from the relief valve 22, the gas entering the vaporizer 23 is ensured to be in a liquid state, the probability that the pressure between the first vaporizing tube 21 and the vaporizer 23 is overlarge due to the existence of the gas in the first vaporizing tube 21 is reduced, and the working safety of the vaporizer 23 and the first vaporizing tube 21 is further ensured. When the purge valve 22 continuously discharges the vaporized gas into the gas storage tank 26, the phenomenon that the gas discharged from the purge valve 22 cannot be smoothly discharged into the gas storage tank 26 due to too small pressure may occur due to the too large pressure in the gas storage tank 26 as the pressure in the gas storage tank 26 is continuously increased, and the first check valve 29 is provided, so that the probability that the gas discharged from the purge valve 22 cannot be smoothly stored into the gas storage tank 26 can be reduced, and the stability of the device is enhanced.

When the second vaporizing tube 24 is too much vaporized, it means that the vaporized gas fills the collecting tank 25, if vaporization is continued, the internal pressure of the vaporizer 23 may be too high, and the vaporizer 23 may be damaged, so when the pressure sensor 36 detects that the pressure in the second vaporizing tube 24 is too high, the controller 4 controls the liquid supply pipeline 1 to stop working, and replaces the collecting tank 25, the pressure sensor 36 after vaporization always keeps the pressure in the vaporizer 23 within a reasonable pressure range of the vaporizer 23, and further the influence of the gas pressure problem on the vaporizer 23 is reduced. When the pressure in the second vaporizing tube 24 is too high, the mechanical safety valve discharges the excessive gas in the second vaporizing tube 24, thereby ensuring that the pressure in the vaporizer 23 is kept within the normal pressure range.

The system can discharge vaporized gas into the gas storage tank 26, reduces the direct discharge of certain harmful gases to the air or human body, and simultaneously effectively reduces the waste of energy sources due to the long-term massive work of the device.

When the gas stored in the gas storage tank 26 reaches a certain amount, the controller 4 can control the electromagnetic valve 31 to be opened, and then control the compressor 30 to compress the gas in the gas storage tank 26 and store the compressed gas in the collection cavity 300; after the controller 4 controls the compressor 30 to change the gaseous gas into the liquid state, the controller 4 can control the power pump 33 to work so as to discharge the liquid gas in the collecting cavity 300 into the booster pump 11, so that the gas discharged by the discharge valve 22 can be reused, and the waste of energy sources is reduced.

With the continuous filling of the gas in the gas tank 26 by the bleed valve 22, the pressure in the gas tank 26 rises, meanwhile, the gas tank pressure gauge 35 detects the pressure in the gas tank 26 in real time and transmits the value to the controller 4, when the controller 4 detects that the value of the gas tank pressure gauge 35 reaches the preset value, the controller 4 controls the solenoid valve 31 to open, the controller 4 controls the compressor 30 to work, the compressor 30 compresses the gas in the gas tank 26 into a liquid state and stores the liquid state in the collecting cavity 300, when the value of the gas tank pressure gauge 35 is reduced below the preset threshold, the controller 4 controls the solenoid valve 31 and the compressor 30 to be sequentially closed, then the controller 4 controls the power pump 33 to be started, the liquid state gas is conveyed into the booster pump 11, and after conveying is finished, the controller 4 controls the power pump 33 to be closed. By arranging the air storage tank pressure gauge 35, when the pressure in the air storage tank 26 reaches a certain value, the controller 4 controls the compressor 30 to work, so that the air discharged by the air discharge valve 22 can smoothly pass through the first one-way valve 29, the difficulty in discharging the air discharged by the air discharge valve 22 due to the overlarge pressure in the air storage tank 26 is reduced, and the influence on the temperature reduction of the booster pump 11 caused by the incapacity of discharging the air in the second muffler is further caused, so that the accuracy of the accurate work of the booster pump 11 is improved; meanwhile, in the process of adding the liquid gas in the collecting cavity 300 into the booster pump 11, heat loss is also caused along the way, so that part of the liquid gas absorbs heat and is vaporized in the conveying process of the liquid gas, and the gas in the booster pump 11 is also caused, so that the working temperature is reduced, but the gas in the booster pump 11 is only required to be reintroduced into the gas storage tank 26 by arranging the gas storage tank pressure gauge 35 and the controller 4 in a mode of introducing the liquid gas in the compressor 30 into the booster pump 11 once, and the next compression is waited, so that the influence on the working efficiency of the booster pump 11 is reduced to the minimum, and the working efficiency of the whole booster pry system is ensured; finally, the discharged gas is secondarily led into the booster pump 11, so that the method has important significance in improving the energy utilization rate and reducing the equipment cost in the long-term frequent work of the booster pump 11.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. A safety control system for filling a gas cylinder, characterized in that: the device comprises a liquid supply pipeline (1), a vaporization pipeline (2) and a controller (4), wherein the liquid supply pipeline (1) is electrically connected with the controller (4), and the controller (4) is electrically connected with the liquid supply pipeline (1); the evaporation pipeline (2) comprises a first evaporation pipe (21), a diffusion valve (22), a vaporizer (23), a second evaporation pipe (24), a collection tank (25), an air storage tank (26) and a third evaporation pipe (27), one end of the first evaporation pipe (21) is connected with the liquid supply pipeline (1), the other end of the first evaporation pipe (21) is connected with one end of the vaporizer (23), and the vaporizer (23) is electrically connected with the controller (4); the other end of the vaporizer (23) is connected with one end of the second vaporizing tube (24), and the other end of the second vaporizing tube (24) is connected with the collecting tank (25); the bleeding valve (22) is arranged on the first vaporization pipe (21), and the bleeding valve (22) is in electrical signal connection with the controller (4); an air outlet (221) of the bleeding valve (22) is connected with one end of the first vaporizing tube (21), and the other end of the third vaporizing tube (27) is connected with the air storage tank (26).

2. The safety control system for filling a gas cylinder according to claim 1, wherein: the vaporization pipeline (2) comprises a liquid outlet temperature sensor (28), the liquid outlet temperature sensor (28) is arranged on the first vaporization pipe (21), and the liquid outlet temperature sensor (28) is in electrical signal connection with the controller (4).

3. The safety control system for filling a gas cylinder according to claim 1, wherein: the vaporizing pipeline (2) further comprises a first one-way valve (29), and the first one-way valve (29) is arranged on the third vaporizing pipe (27).

4. A safety control system for filling a gas cylinder according to any one of claims 1-3, characterized in that: the vaporization pipeline (2) further comprises a compressor (30), an electromagnetic valve (31) and a fourth vaporization pipe (32), the air storage tank (26) is connected with one end of the electromagnetic valve (31), the other end of the electromagnetic valve (31) is connected with one end of the fourth vaporization pipe (32), the compressor (30) at the other end of the fourth vaporization pipe (32) is connected, the compressor (30) is electrically connected with the controller (4), and a collection cavity (300) is arranged inside the compressor (30).

5. The safety control system for filling a gas cylinder according to claim 4, wherein: the liquid supply pipeline (1) further comprises a booster pump (11), the first vaporizing tube (21) is connected with a liquid outlet (111) on the booster pump (11), the vaporizing pipeline (2) further comprises a power pump (33) and a second one-way valve (34), one end of the collecting cavity (300), which is far away from the gas storage tank (26), is connected with one end of the power pump (33), the power pump (33) is electrically connected with the controller (4), the other end of the power pump (33) is connected with one end of the second one-way valve (34), and the other end of the second one-way valve (34) is connected with the booster pump (11).

6. The safety control system for filling a gas cylinder according to claim 5, wherein: the vaporization pipeline (2) further comprises an air storage tank pressure gauge (35), the air storage tank pressure gauge (35) is arranged on the air storage tank (26), and the air storage tank pressure gauge (35) is in electric signal connection with the controller (4).

7. The safety control system for filling a gas cylinder according to claim 1, wherein: the second vaporizing tube (24) is also provided with a post-vaporizing pressure sensor (36), and the post-vaporizing pressure sensor (36) is electrically connected with the controller (4).

8. The safety control system for filling a gas cylinder according to claim 1, wherein: and a mechanical safety valve (37) is also arranged on the second vaporization pipe (24).