CN216804188U

CN216804188U - Gas filling system

Info

Publication number: CN216804188U
Application number: CN202220408296.0U
Authority: CN
Inventors: 王明未
Original assignee: Jiangsu Kewei Complete Equipment Co ltd
Current assignee: Jiangsu Kewei Complete Equipment Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-06-24
Anticipated expiration: 2032-02-25

Abstract

The utility model relates to a gaseous filling field, concretely relates to gaseous filling system, it includes base, buffer, cooling device and supercharging device all set up on the base, and gas passes through in proper order buffer, cooling device and supercharging device, buffer one side is provided with the air inlet that is used for gaseous input, supercharging device one side is provided with the gas outlet that is used for gaseous output. This application has the effect that improves carbon dioxide filling amount accuracy.

Description

Gas filling system

Technical Field

The application relates to the field of gas filling, in particular to a gas filling system.

Background

Gas filling refers to a technology of adding gas into a specific device or equipment, and has good application in a plurality of fields, and filling modes of different gases are different. In the field of foaming extrusion, as the foaming agent contains more fluorine and chlorine ions harmful to the environment, and the carbon dioxide foaming technology is a potential substitute technology, the foaming requirement can be met, and the foaming agent is non-toxic and harmless.

However, the density stability of carbon dioxide is poor, and the influence of temperature factors is large, so that the density fluctuation of carbon dioxide is large, and the accuracy of the carbon dioxide filling amount is easily influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the accuracy of the carbon dioxide filling amount, the application provides a gas filling system.

The application provides a gas filling system adopts following technical scheme:

the utility model provides a gas filling system, includes base, buffer, cooling device and supercharging device all set up on the base, and gas passes through in proper order buffer, cooling device and supercharging device, cooling device is used for cooling gas and keeps the gas temperature invariable, buffer one side is provided with the air inlet that is used for gaseous input, supercharging device one side is provided with the gas outlet that is used for gaseous output.

By adopting the technical scheme, the carbon dioxide gas is firstly buffered by the buffer device, the stability of the carbon dioxide gas is kept, and then the carbon dioxide is cooled to the temperature of 5 ℃ below zero to 10 ℃ below zero by the cooling device, so that the density of the carbon dioxide gas is kept in a relatively constant state, the density fluctuation of the carbon dioxide gas is favorably reduced, and the effect of improving the accuracy of the carbon dioxide filling quantity is further achieved. In addition, the cooled carbon dioxide gas is pressurized by the pressurizing device, so that the density of the carbon dioxide gas reaches a foaming required value, the flow of the carbon dioxide is proper, and the filling efficiency of the carbon dioxide is improved.

Preferably, the buffer device comprises a middle buffer tank, the middle buffer tank is arranged on the base, an air inlet is formed in the middle buffer tank, an air outlet pipe is arranged on the middle buffer tank, and the air outlet pipe is connected with the cooling device.

Through adopting above-mentioned technical scheme, utilize middle buffer tank to cushion carbon dioxide gas, be favorable to improving carbon dioxide gas's stability.

Preferably, the middle buffer tank is provided with a pressure monitoring and adjusting assembly, the pressure monitoring and adjusting assembly comprises a first branch pipe, a second branch pipe, a safety valve and a pressure sensor, the first branch pipe and the second branch pipe are both arranged on the middle buffer tank and communicated with the middle buffer tank, the safety valve is arranged on the first branch pipe, and the pressure sensor is arranged on the second branch pipe.

Through adopting above-mentioned technical scheme, utilize pressure sensor to monitor the pressure of middle buffer tank internal carbon dioxide, be convenient for operating personnel real-time supervision. Meanwhile, the pressure in the middle buffer tank is regulated and controlled through the safety valve, so that the situation that potential safety hazards exist due to overlarge pressure is reduced.

Preferably, the middle buffer tank is provided with a liquid discharge pipe and an emptying pipe, the liquid discharge pipe and the emptying pipe are both communicated with the middle buffer tank, the liquid discharge pipe is provided with a first electromagnetic valve, the emptying pipe is provided with a second electromagnetic valve, and the air outlet pipe is provided with a third electromagnetic valve.

Through adopting above-mentioned technical scheme, during the clearance of shutting down, can open the fluid-discharge tube through first solenoid valve, emit the liquid of saving in middle buffer tank, the operation is comparatively convenient. Simultaneously before the start-up, can close first solenoid valve and third solenoid valve, open the second solenoid valve to the non-carbon dioxide gas in the buffer tank is discharged in the middle of letting in carbon dioxide gas, helps improving the carbon dioxide purity of filling.

Preferably, the cooling device comprises a water cooler, a water inlet pipe, a water outlet pipe and a cooling tank, the water cooler and the cooling tank are both arranged on the base, the water inlet pipe and the water outlet pipe are both arranged between the water cooler and the cooling tank, the air outlet pipe penetrates through the cooling tank and is not communicated with the cooling tank, and one end of the air outlet pipe, extending out of the cooling tank, is connected with the pressurizing device.

Through adopting above-mentioned technical scheme, the cooling-water machine lets in recirculated cooling water to the cooling tank through inlet tube and outlet pipe, cools off the part that the outlet duct is located the cooling tank for its temperature keeps at 5 ℃ below zero to 10 ℃ below zero, thereby reduces carbon dioxide density fluctuation, and then reaches the effect that improves carbon dioxide filling amount accuracy.

Preferably, a connecting column is arranged in the cooling tank, a gap is formed between the connecting column and the inner wall of the pipe of the cooling tank, and the part of the air outlet pipe extending into the cooling tank is spirally wound on the connecting column.

Through adopting above-mentioned technical scheme, the part that the outlet duct is located the cooling tank is the heliciform around establishing on the spliced pole, increases the cooling area of outlet duct to the extension cooling water is to the cooling time of carbon dioxide, thereby helps improving the stability of carbon dioxide temperature, and then reaches the effect that improves carbon dioxide filling amount accuracy.

Preferably, the supercharging device comprises a booster pump, the booster pump is connected with one end of the air outlet pipe extending out of the cooling tank, an air outlet is formed in the booster pump, and the booster pump is used for enhancing the pressure of air in the air outlet pipe.

Through adopting above-mentioned technical scheme, the booster pump carries out pressurization to carbon dioxide, makes its density and flow reach the foaming needs, and helps making carbon dioxide's pressure comparatively invariable to help improving the accuracy of carbon dioxide filling volume.

Preferably, a mass flow meter is arranged on the air outlet pipe on one side of the booster pump away from the cooling tank.

Through adopting above-mentioned technical scheme, the output of carbon dioxide sets up mass flow meter on the outlet duct, and the flow of real-time supervision carbon dioxide can in time adjusting device and technology if its flow appears undulant to help improving the accuracy of carbon dioxide filling volume.

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

according to the carbon dioxide foaming device, the carbon dioxide is buffered through the buffering device, the carbon dioxide is cooled through the cooling device, the temperature of the carbon dioxide is reduced to a certain range and is kept relatively constant, so that the density of the carbon dioxide is relatively constant, and the accuracy of the carbon dioxide filling amount is improved;

in the application, the water cooler feeds circulating cooling water into the cooling tank through the water inlet pipe and the water outlet pipe, so that carbon dioxide is cooled and cooled to a certain range, the fluctuation of the density of the carbon dioxide is reduced, and the accuracy of the carbon dioxide filling amount is improved;

this application is through being the heliciform with the outlet duct and winding on the spliced pole, prolongs the cooling time of carbon dioxide in the cooling tank to help improving the cooling effect of carbon dioxide.

Drawings

Fig. 1 is a schematic structural diagram of a gas filling system in an embodiment of the present application.

Fig. 2 is a partial sectional view of the structure of the outlet pipe in the cooling tank for embodying the embodiment of the present application.

Fig. 3 is an enlarged view at a in fig. 2.

Description of the reference numerals: 1. a base; 11. a support; 12. a supporting seat; 2. a buffer device; 21. a middle buffer tank; 211. an air inlet pipe; 3. a cooling device; 31. a water chiller; 32. a water inlet pipe; 33. a water outlet pipe; 34. a cooling tank; 4. a pressure boosting device; 41. a booster pump; 5. a pressure monitoring and regulating assembly; 51. a first branch pipe; 52. a second branch pipe; 521. a fourth solenoid valve; 53. a safety valve; 54. a pressure sensor; 6. a liquid discharge pipe; 61. emptying the pipe; 62. a first solenoid valve; 63. a second solenoid valve; 7. connecting columns; 8. an air outlet pipe; 81. a third electromagnetic valve; 9. a mass flow meter.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a gas filling system.

Referring to fig. 1, a gas filling system includes a base 1, a buffer device 2, a cooling device 3, and a pressurizing device 4, where the buffer device 2, the cooling device 3, and the pressurizing device 4 are all disposed on the base 1, a gas is carbon dioxide, the carbon dioxide gas sequentially passes through the buffer device 2, the cooling device 3, and the pressurizing device 4, and the cooling device 3 is configured to cool the gas to a certain temperature and keep the temperature of the carbon dioxide gas relatively constant. One side of the buffer device 2 is provided with an air inlet for inputting air, one side of the supercharging device 4 is provided with an air outlet for outputting air, and one side of the air outlet is connected with the extrusion equipment.

Referring to fig. 1, a support 11 is fixedly connected to a base 1, a buffer device 2 includes a middle buffer tank 21, the middle buffer tank 21 is fixedly connected to the support 11, an air inlet pipe 211 is fixedly connected to the top end of the middle buffer tank 21, and the air inlet is located on the air inlet pipe 211. The top end of the middle buffer tank 21 is fixedly connected with an air outlet pipe 8, the air outlet pipe 8 is provided with a third electromagnetic valve 81, the air outlet pipe 8 is communicated with the middle buffer tank 21, and one end of the air outlet pipe 8 far away from the middle buffer tank 21 is connected with the cooling device 3.

Referring to fig. 1 and 2, the cooling device 3 includes a water chiller 31, a water inlet pipe 32, a water outlet pipe 33, and a cooling tank 34, wherein the water chiller 31 and the cooling tank 34 are both fixedly connected to the base 1, and the cooling tank 34 is located below the middle buffer tank 21. The water inlet pipe 32 and the water outlet pipe 33 are both communicated between the water chiller 31 and the cooling tank 34, and the water inlet pipe 32 is positioned below the water outlet pipe 33. The air outlet pipe 8 penetrates through the cooling tank 34 and is not communicated with the cooling tank 34, and one end of the air outlet pipe 8, which extends out of the cooling tank 34, is connected with the supercharging device 4.

Referring to fig. 1, the supporting base 12 is fixedly connected to the base 1, the pressurizing device 4 includes a pressurizing pump 41, the pressurizing pump 41 is fixedly connected to the supporting base 12, and the pressurizing pump 41 may be a two-head pressurizing pump 41 or a three-head pressurizing pump 41, and the three-head pressurizing pump 41 is selected for use in this embodiment. The booster pump 41 is connected with one end of the air outlet pipe 8 extending out of the cooling tank 34, the air outlet is positioned on the booster pump 41, and the booster pump 41 is used for enhancing the pressure of the gas in the air outlet pipe 8.

When the carbon dioxide is filled into the extrusion device, the third electromagnetic valve 81 and the pressurizing pump 41 are opened, the water chiller 31 is started, and the circulating cooling water is introduced into the cooling tank 34. Firstly, introducing carbon dioxide gas into the intermediate buffer tank 21 through the gas inlet for buffering, and introducing the carbon dioxide gas in the intermediate buffer tank 21 into the gas outlet pipe 8 and into the cooling tank 34 along the gas outlet pipe 8; under the cooling action of the cooling water, the temperature of the carbon dioxide gas is reduced to a certain range and kept relatively constant. The cooled carbon dioxide gas leaves the cooling tank 34 along the gas outlet pipe 8, then the pressure of the carbon dioxide is increased under the pressurization effect of the pressurization pump 41, and finally the carbon dioxide enters the extrusion equipment to participate in the foaming process.

Referring to fig. 1, 2 and 3, the pressure in the intermediate buffer tank 21 is monitored in real time, so that corresponding adjustment can be made in time, and the potential safety hazard can be reduced. Further, a pressure monitoring and adjusting unit 5 is provided on the intermediate buffer tank 21. The pressure monitoring and regulating assembly 5 comprises a first branch pipe 51, a second branch pipe 52, a safety valve 53 and a pressure sensor 54, wherein the first branch pipe 51 and the second branch pipe 52 are fixedly connected to the top end of the intermediate buffer tank 21, and the first branch pipe 51 and the second branch pipe 52 are communicated with the intermediate buffer tank 21. The relief valve 53 is fixedly connected to the first branch pipe 51, the pressure sensor 54 is fixedly connected to the pipe inner wall of the second branch pipe 52, and the fourth solenoid valve 521 is provided on the second branch pipe 52 above the pressure sensor 54.

In the process of filling carbon dioxide, the pressure sensor 54 monitors the pressure in the intermediate buffer tank 21 in real time, and when the pressure is too high, the safety valve 53 is automatically opened to discharge a certain amount of carbon dioxide gas and reduce the system pressure, so that the pressure of the whole system is in a safe range.

Referring to fig. 1 and 2, it is considered that other gas in the intermediate buffer tank 21 is more conveniently discharged before start-up, so that the purity of the filled carbon dioxide is higher; meanwhile, the liquid in the intermediate buffer tank 21 can be conveniently discharged when the machine is stopped. Furthermore, a liquid discharge pipe 6 and an emptying pipe 61 are fixedly connected to the middle buffer tank 21, the liquid discharge pipe 6 and the emptying pipe 61 are both communicated with the middle buffer tank 21, the liquid discharge pipe 6 is located at the bottom end of the middle buffer tank 21, and the emptying pipe 61 is located at the top end of the middle buffer tank 21. The drain pipe 6 is provided with a first solenoid valve 62, and the drain pipe 61 is provided with a second solenoid valve 63.

Before the carbon dioxide is injected, the second solenoid valve 63, the third solenoid valve 81, and the fourth solenoid valve 521 are closed, and the first solenoid valve 62 is opened to discharge the accumulated liquid in the intermediate buffer tank 21. Then closing the first electromagnetic valve 62 and opening the second electromagnetic valve 63, introducing carbon dioxide gas into the intermediate buffer tank 21, and discharging other gases; after a certain period of time, the second electromagnetic valve 63 is closed, and the third electromagnetic valve 81 is opened again to perform the carbon dioxide filling operation.

Referring to fig. 1 and 2, a case where the cooling time of carbon dioxide in the cooling tank 34 is extended so that the temperature of carbon dioxide is stable is considered. Furthermore, a connecting column 7 is fixedly connected in the cooling tank 34, a gap is formed between the connecting column 7 and the inner wall of the pipe of the cooling tank 34, and the part of the air outlet pipe 8 extending into the cooling tank 34 is spirally wound on the connecting column 7.

Referring to fig. 1, it is considered that the flow rate of carbon dioxide at the side of the extrusion apparatus of the outlet pipe 8 is monitored in real time. Further, a mass flow meter 9 is fixedly connected to the gas outlet pipe 8 at a side of the booster pump 41 far away from the cooling tank 34.

An operator monitors flow change in real time through data fed back by the mass flow meter 9, and if abnormal fluctuation occurs in the mass flow meter 9, the device and the process are adjusted in time, so that the carbon dioxide filling amount is accurate.

The implementation principle of a gas filling system in the embodiment of the application is as follows: in the process of carbon dioxide gas filling, the carbon dioxide gas is firstly buffered in the middle buffer tank 21, then passes through the cooling tank 34 along the outlet pipe 8, and is cooled, so that the temperature of the carbon dioxide is reduced to a certain range and is kept relatively constant, the density of the carbon dioxide is relatively constant, and the effect of improving the accuracy of the carbon dioxide filling amount is high. The pressure of the cooled carbon dioxide is increased under the pressurization effect of the booster pump 41, and finally the carbon dioxide enters the basic equipment to participate in the foaming process. The pressure of buffer tank 21 in the middle of this in-process pressure sensor real-time supervision, and mass flow meter 9 real-time supervision is about to get into the carbon dioxide flow of extrusion equipment to operating personnel can in time make corresponding adjustment according to the data that feed back.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A gas filling system, characterized by: including base (1), buffer (2), cooling device (3) and supercharging device (4) all set up on base (1), and gas passes through in proper order buffer (2), cooling device (3) and supercharging device (4), cooling device (3) are used for cooling gas and keep the gas temperature invariant, buffer (2) one side is provided with the air inlet that is used for gaseous input, supercharging device (4) one side is provided with the gas outlet that is used for gaseous output.

2. A gas filling system according to claim 1, wherein: buffer (2) include middle buffer tank (21), middle buffer tank (21) set up on base (1), set up the air inlet on middle buffer tank (21), be provided with outlet duct (8) on middle buffer tank (21), outlet duct (8) are connected with cooling device (3).

3. A gas filling system according to claim 2, wherein: the pressure monitoring and adjusting device is characterized in that a pressure monitoring and adjusting assembly (5) is arranged on the middle buffer tank (21), the pressure monitoring and adjusting assembly (5) comprises a first branch pipe (51), a second branch pipe (52), a safety valve (53) and a pressure sensor (54), the first branch pipe (51) and the second branch pipe (52) are arranged on the middle buffer tank (21) and are communicated with the middle buffer tank (21), the safety valve (53) is arranged on the first branch pipe (51), and the pressure sensor (54) is arranged on the second branch pipe (52).

4. A gas filling system according to claim 2, wherein: be provided with fluid-discharge tube (6) and evacuation pipe (61) on middle buffer tank (21), fluid-discharge tube (6) and evacuation pipe (61) all communicate with each other with middle buffer tank (21), be provided with first solenoid valve (62) on fluid-discharge tube (6), be provided with second solenoid valve (63) on evacuation pipe (61), be provided with third solenoid valve (81) on outlet duct (8).

5. A gas filling system according to claim 2, wherein: cooling device (3) include cold water machine (31), inlet tube (32), outlet pipe (33) and cooling tank (34), cold water machine (31) and cooling tank (34) all set up on base (1), inlet tube (32) and outlet pipe (33) all set up between cold water machine (31) and cooling tank (34), outlet duct (8) pass cooling tank (34) and do not communicate with each other with cooling tank (34), the one end that outlet duct (8) stretched out cooling tank (34) is connected with supercharging device (4).

6. A gas filling system according to claim 5, wherein: be provided with spliced pole (7) in cooling tank (34), there is the clearance between the inside pipe wall of spliced pole (7) and cooling tank (34), the part that outlet duct (8) stretched into cooling tank (34) is the heliciform around establishing on spliced pole (7).

7. A gas filling system according to claim 5, wherein: supercharging device (4) includes booster pump (41), booster pump (41) is connected with the one end that outlet duct (8) stretches out cooling tank (34), set up the gas outlet on booster pump (41), booster pump (41) are used for strengthening the pressure of gas in outlet duct (8).

8. A gas filling system according to claim 7, wherein: and a mass flow meter (9) is arranged on one side, away from the cooling tank (34), of the booster pump (41) on the air outlet pipe (8).