Phase change gas preparation device and method

Abstract

The invention relates to the technical field of gas cylinder gas filling, in particular to a phase change gas making device and method. According to the technical scheme, when a filled container is filled, a controller is used for controlling a gas-phase medium inlet valve, a heating medium inlet valve and a heating medium outlet valve to be opened and controlling a safety valve and a release valve to be closed, so that a heating medium flows through a heating pipeline and heats a raw material container; and when the pressure detected by the pressure sensor exceeds the preset pressure, the controller is used for controlling the safety valve and the release valve to be opened and controlling the gas-phase medium inlet valve and the heating medium inlet valve to be closed, so that the gas-phase medium in the filling pipeline is discharged to the heating pipeline through the release pipeline, and the heating medium in the heating pipeline is discharged. Therefore, according to the technical scheme, the energy contained in the phase change medium in the phase change process can be reasonably utilized, and the heating medium in the heating pipeline is discharged in time, so that the heating pipeline is forced to stop working, and the whole set of phase change gas making device is in a safe working range.

Description

Technical Field

[0001] The invention relates to the technical field of gas cylinder gas filling, and in particular to a phase change gas making device and method. Background Art

[0002] Generally, matter has three phases, namely solid, liquid and gas, that is, there are three phases, namely solid, liquid and gas. In the process of the medium changing from solid and liquid to gas, the same mass of medium, because the volume of gas is hundreds of times that of solid and liquid, the volume of gas storage is generally a high-pressure container to ensure the storage of a considerable amount of gaseous medium. However, in some cases, the amount of solid and liquid converted to gas increases rapidly. When the volume of the filled container is fixed, the pressure in the filled container will increase rapidly, which may exceed the limit pressure of the filled container, and further lead to the destruction of the filled container. Therefore, it is necessary to provide a phase change gas production device and method to solve the above technical problems. Summary of the invention

[0003] The present invention provides a phase change gas production device and method, which can prevent the damage of the filled container caused by the increase of the pressure of the filled container due to the increase of the gas volume during the phase change when the medium changes from solid or liquid to gas during solid and liquid two-phase heating.

[0004] In the first embodiment, the present invention provides a phase change gas production device, including a raw material container, a filled container, a filling pipeline, a heating pipeline and a discharge pipeline, the filling pipeline is connected to the raw material container and the filled container respectively, the raw material container is used to store the non-gaseous medium to be filled, the filling pipeline is used to flow through the gaseous medium generated by heating the non-gaseous medium, the filling pipeline is provided with a pressure sensor, a safety valve and a gaseous medium inlet valve, the heating pipeline flows through the heating medium for heating the raw material container, the heating pipeline is provided with a heating medium inlet valve and a heating medium outlet valve at both ends, the discharge pipeline is connected to the safety valve and the heating medium inlet valve respectively, the discharge pipeline is provided with a discharge valve, the pressure sensor, the safety valve, the gaseous medium inlet valve, the heating medium inlet valve, the heating medium outlet valve and the discharge valve are all connected to an external controller.

[0005] Preferably, the non-gaseous medium includes a solid medium and a liquid medium.

[0006] Preferably, the filling pipeline is also provided with a pressure gauge, and the pressure gauge is used to display the current pressure of the filling pipeline.

[0007] Preferably, it also includes a vacuum pump, which is connected to the filling pipeline and is used to evacuate the filling pipeline, the discharge pipeline and the filled container.

[0008] Preferably, the outlet of the raw material container, the inlet of the filled container and the inlet of the vacuum pump are all provided with switch valves.

[0009] Preferably, the heating pipeline is wound around the outer circumference of the raw material container.

[0010] Preferably, the heating medium includes at least one of a gaseous medium and a liquid medium whose temperature is higher than that of the non-gaseous medium.

[0011] Preferably, a safety cylinder is provided outside the raw material container.

[0012] Preferably, an explosion-proof isolation wall is provided between the safety cylinder and the filled container.

[0013] In a second embodiment, the present invention provides a phase change gas production method, which is applied to any of the above phase change gas production devices, comprising:

[0014] When the filled container is filled, the controller is used to control the gas phase medium inlet valve, the heating medium inlet valve and the heating medium outlet valve to open and the safety valve and the discharge valve to close, so that the heating medium flows through the heating pipeline and heats the raw material container;

[0015] When the pressure detected by the pressure sensor exceeds the preset pressure, the controller is used to control the safety valve and the discharge valve to open and the gas-phase medium inlet valve and the heating medium inlet valve to close, so that the gas-phase medium in the filling pipeline is discharged to the heating pipeline through the discharge pipeline, and the heating medium in the heating pipeline is discharged.

[0016] Beneficial effects:

[0017] The phase change gas making device provided by the present invention, when filling the filled container, uses a controller to control the gas medium inlet valve, the heating medium inlet valve and the heating medium outlet valve to open, and the safety valve and the discharge valve to close, so that the heating medium flows through the heating pipeline and heats the raw material container; when the pressure detected by the pressure sensor exceeds the preset pressure, the controller is used to control the safety valve and the discharge valve to open, and the gas medium inlet valve and the heating medium inlet valve to close, so that the gas medium in the filling pipeline is discharged to the heating pipeline through the discharge pipeline, and the heating medium in the heating pipeline is discharged. Therefore, the above technical scheme can reasonably utilize the energy contained in the phase change medium during the phase change process, discharge the heating medium in the heating pipeline in time, force the heating pipeline to stop working, and put the whole phase change gas making device in a safe working range, so that when the solid and liquid two-phase heating, the medium changes from solid and liquid to gaseous state, and the damage to the filled container caused by the increase in the pressure of the filled container due to the increase in the gas volume during the phase change can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a phase change gas production device provided in an embodiment of the present invention.

[0020] Reference numerals:

[0021] 1-Raw material container; 2-Filled container; 3-Filling pipeline; 4-Heating pipeline; 5-Discharge pipeline; 6-Pressure sensor; 7-Safety valve; 8-Gas medium inlet valve; 9-Heating medium inlet valve; 10-Heating medium outlet valve; 11-Discharge valve; 12-Controller; 13-Pressure gauge; 14-Vacuum pump; 15-Switch valve; 16-Safety cylinder; 17-Explosion-proof isolation wall. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] See also Figure 1 An embodiment of the present invention provides a phase change gas production device, which includes a raw material container 1, a filled container 2, a filling pipeline 3, a heating pipeline 4 and a discharge pipeline 5. The filling pipeline 3 is connected to the raw material container 1 and the filled container 2 respectively. The raw material container 1 is used to store the non-gaseous medium to be filled. The filling pipeline 3 is used to flow through the gaseous medium generated by heating the non-gaseous medium. The filling pipeline 3 is provided with a pressure sensor 6, a safety valve 7 and a gaseous medium inlet valve 8. A heating medium for heating the raw material container 1 flows through the heating pipeline 4. A heating medium inlet valve 9 and a heating medium outlet valve 10 are provided at both ends of the heating pipeline 4. The discharge pipeline 5 is connected to the safety valve 7 and the heating medium inlet valve 9 respectively. A discharge valve 11 is provided on the discharge pipeline 5. The pressure sensor 6, the safety valve 7, the gaseous medium inlet valve 8, the heating medium inlet valve 9, the heating medium outlet valve 10 and the discharge valve 11 are all connected to an external controller 12.

[0027] In this embodiment, when filling the filled container 2, the controller 12 is used to control the gas phase medium inlet valve 8, the heating medium inlet valve 9 and the heating medium outlet valve 10 to open and the safety valve 7 and the discharge valve 11 to close, so that the heating medium flows through the heating pipeline 4 and heats the raw material container 1; when the pressure detected by the pressure sensor 6 exceeds the preset pressure, the controller 12 is used to control the safety valve 7 and the discharge valve 11 to open and the gas phase medium inlet valve 8 and the heating medium inlet valve 9 to close, so that the gas phase medium in the filling pipeline 3 is discharged to the heating pipeline 4 through the discharge pipeline 5, and the heating medium in the heating pipeline 4 is discharged. Therefore, the above technical scheme can reasonably utilize the energy contained in the phase change medium during the phase change process, discharge the heating medium in the heating pipeline 4 in time, force the heating pipeline 4 to stop working, and put the whole phase change gas production device in a safe working range, so that when the solid and liquid two-phase heating is carried out, the medium is transformed from solid and liquid to gaseous state, and the damage of the filled container caused by the increase of the pressure of the filled container due to the increase of the gas volume during the phase change is prevented.

[0028] Furthermore, the non-gaseous medium includes a solid medium and a liquid medium, and the present invention does not limit the specific types of the solid medium and the liquid medium.

[0029] Furthermore, a pressure gauge 13 is provided on the filling pipeline 3, and the pressure gauge 13 is used to display the current pressure of the filling pipeline 3 for visual monitoring by on-site personnel.

[0030] Furthermore, it also includes a vacuum pump 14, which is connected to the filling pipeline 3. The vacuum pump 14 is used to evacuate the filling pipeline 3, the discharge pipeline 5 and the filled container 2 to ensure the purity of the gas during the filling process.

[0031] Furthermore, the outlet of the raw material container 1, the inlet of the filled container 2 and the inlet of the vacuum pump 14 are all provided with switch valves 15 to better ensure the safety during the gas filling process.

[0032] Furthermore, the heating pipeline 4 is wound around the outer circumference of the raw material container 1 to better heat the raw material container 1 .

[0033] Further, the heating medium includes at least one of a gaseous medium and a liquid medium having a temperature higher than that of the non-gaseous medium. For example, the heating medium may be hot air, water, hot oil, ethylene glycol, alcohol, etc. Preferably, the heating medium is water.

[0034] Furthermore, a safety cylinder 16 is disposed outside the raw material container 1 , and the safety cylinder 16 has an explosion-proof function to better ensure the safety of the raw material container 1 .

[0035] Furthermore, an explosion-proof isolation wall 17 is provided between the safety cylinder 16 and the filled container 2 to further ensure the safety of gas filling.

[0036] In addition, the present invention further provides a phase change gas production method, which is applied to the phase change gas production device in any of the above embodiments, comprising:

[0037] When filling the filled container 2, the controller 12 is used to control the gas phase medium inlet valve 8, the heating medium inlet valve 9 and the heating medium outlet valve 10 to open and the safety valve 7 and the discharge valve 11 to close, so that the heating medium flows through the heating pipeline 4 and heats the raw material container 1;

[0038] When the pressure detected by the pressure sensor 6 exceeds the preset pressure, the controller 12 is used to control the safety valve 7 and the discharge valve 11 to open and the gas medium inlet valve 8 and the heating medium inlet valve 9 to close, so that the gas medium in the filling pipeline 3 is discharged to the heating pipeline 4 through the discharge pipeline 5, and the heating medium in the heating pipeline 4 is discharged.

[0039] In this embodiment, the above technical scheme can reasonably utilize the energy contained in the phase change medium during the phase change process, and discharge the heating medium in the heating pipeline 4 in time to force the heating pipeline 4 to stop working, so that the entire phase change gas production device is in a safe working range, so that when the solid and liquid two-phases are heated, the medium is transformed from solid and liquid to gas, which can prevent the damage to the filled container caused by the increase in pressure of the filled container due to the increase in gas volume during phase change.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A phase change gas production device, characterized in that: It includes a raw material container, a filled container, a filling pipeline, a heating pipeline and a discharge pipeline, the filling pipeline is connected to the raw material container and the filled container respectively, the raw material container is used to store the non-gaseous medium to be filled, the filling pipeline is used to flow through the gaseous medium generated by heating the non-gaseous medium, the filling pipeline is provided with a pressure sensor, a safety valve and a gaseous medium inlet valve, the heating medium for heating the raw material container flows through the heating pipeline, the heating medium inlet valve and the heating medium outlet valve are provided at both ends of the heating pipeline, the discharge pipeline is connected to the safety valve and the heating medium inlet valve respectively, the discharge pipeline is provided with a discharge valve, the pressure sensor, the safety valve, the gaseous medium inlet valve, the heating medium inlet valve, the heating medium outlet valve and the discharge valve are all connected to an external controller.

2. The phase change gas production device according to claim 1, characterized in that: The non-gaseous medium includes a solid medium and a liquid medium.

3. The phase change gas production device according to claim 1, characterized in that: The filling pipeline is also provided with a pressure gauge, and the pressure gauge is used to display the current pressure of the filling pipeline.

4. The phase change gas production device according to claim 1, characterized in that: It also includes a vacuum pump, which is connected to the filling pipeline and is used to evacuate the filling pipeline, the discharge pipeline and the filled container.

5. The phase change gas production device according to claim 4, characterized in that: The outlet of the raw material container, the inlet of the filled container and the inlet of the vacuum pump are all provided with switch valves.

6. The phase change gas production device according to claim 1, characterized in that: The heating pipeline is wound around the outer circumference of the raw material container.

7. The phase change gas production device according to claim 1, characterized in that: The heating medium includes at least one of a gaseous medium and a liquid medium whose temperature is higher than that of the non-gaseous medium.

8. The phase change gas production device according to any one of claims 1 to 7, characterized in that: A safety cylinder is arranged outside the raw material container.

9. The phase change gas production device according to claim 8, characterized in that: An explosion-proof isolation wall is arranged between the safety cylinder and the filled container.

10. A phase change gas production method, characterized in that: A phase change gas production device as claimed in any one of claims 1 to 9, comprising: When the filled container is filled, the controller is used to control the gas phase medium inlet valve, the heating medium inlet valve and the heating medium outlet valve to open and the safety valve and the discharge valve to close, so that the heating medium flows through the heating pipeline and heats the raw material container; When the pressure detected by the pressure sensor exceeds the preset pressure, the controller is used to control the safety valve and the discharge valve to open and the gas-phase medium inlet valve and the heating medium inlet valve to close, so that the gas-phase medium in the filling pipeline is discharged to the heating pipeline through the discharge pipeline, and the heating medium in the heating pipeline is discharged.

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