A phase change gas production device and method

Abstract

The present application relates to gas cylinder gas filling technical field, particularly relates to a kind of phase change gas production device and method.In the technical scheme, when being filled container is filled, using controller control gas phase medium inlet valve, heating medium inlet valve and heating medium outlet valve open and safety valve and release valve close, to make heating medium flow through heating pipeline and heat raw material container;When the pressure detected by pressure sensor exceeds preset pressure, using controller control safety valve and release valve open and gas phase medium inlet valve and heating medium inlet valve close, to make gas phase medium in filling pipeline discharge to heating pipeline through release pipeline, and heating medium in heating pipeline is discharged.Therefore, the above technical scheme can reasonably utilize the energy contained in phase change medium in phase change process, heating medium in heating pipeline is discharged in time, to force heating pipeline to stop working, so that the whole phase change gas production device is in safe working range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cylinder gas filling, and in particular to a phase-change gas production device and method. BACKGROUND

[0002] Generally, a substance has three phases, namely solid, liquid and gas, namely three phases, namely solid, liquid and gas. In the process of changing from solid and liquid to gas, the same mass of medium will increase the volume of the gas phase by hundreds of times, and the volume of the storage gas is generally a high-pressure container to ensure the storage of a considerable amount of gas phase medium. However, in some cases, the amount of solid and liquid changing into gas increases rapidly, and in the case of fixed volume of the filled container, the pressure in the filled container will increase rapidly, which may exceed the limit pressure of the filled container, thereby further causing 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

[0003] The present application provides a phase-change gas production device and method, which can prevent the destruction of the filled container caused by the increase of the pressure in the filled container due to the increase of the volume of the gas phase during the process of changing from solid and liquid to gas when the two phases are heated.

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

[0005] Preferably, the non-gas phase medium comprises solid medium and liquid medium.

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

[0007] Preferably, a vacuum pump is further included, the vacuum pump is connected with the filling pipeline, and the vacuum pump is used to vacuumize 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 provided with on-off valves.

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

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

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

[0012] Preferably, a blast-proof partition wall is provided between the safety cylinder and the filled container.

[0013] In a second embodiment, the present application provides a phase-change gas production method applied to the phase-change gas production device as described in any one of the above embodiments, comprising:

[0014] When the filled container is being filled, the controller is used to control the opening of the gaseous medium inlet valve, the heating medium inlet valve and the heating medium outlet valve and the closing of the safety valve and the release valve, 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 opening of the safety valve and the release valve and the closing of the gaseous medium inlet valve and the heating medium inlet valve, so that the gaseous 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.

[0016] Advantages:

[0017] The phase change gas production device provided by the application controls the opening of the gas-phase medium inlet valve, the heating medium inlet valve and the heating medium outlet valve and the closing of the safety valve and the discharge valve by using the controller when the charging container is being charged, 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 safety valve and the discharge valve are opened and the gas-phase medium inlet valve and the heating medium inlet valve are closed by using the controller, so that the gas-phase medium in the charging 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 solution can reasonably utilize the energy contained in the phase change medium in the phase change process, timely discharge the heating medium in the heating pipeline, force the heating pipeline to stop working, make the whole phase change gas production device be in a safe working range, and prevent the charging container from being damaged due to the increase of the pressure of the charging container caused by the increase of the volume of the gas during the phase transition of the medium from the solid state and the liquid state to the gaseous state. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0019] Figure 1 The structural schematic diagram of the phase change gas production device provided by the embodiment of the application.

[0020] Reference signs:

[0021] 1-raw material container; 2-charging container; 3-charging pipeline; 4-heating pipeline; 5-discharge pipeline; 6-pressure sensor; 7-safety valve; 8-gas-phase 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-on-off 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 application more clear, the technical solutions in the embodiments of the application will be described clearly and completely in the following by combining the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, not all the embodiments. The components of the embodiments of the application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the application without creative labor fall within the scope of protection of the application.

[0024] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0025] In the description of the application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0026] Referring to Figure 1 , one embodiment of the application provides a phase-change gas production device, which comprises a raw material container 1, a charged container 2, a charging pipeline 3, a heating pipeline 4 and a discharge pipeline 5, the charging pipeline 3 is connected with the raw material container 1 and the charged container 2 respectively, the raw material container 1 is used for storing non-gaseous medium to be charged, the charging pipeline 3 is used for flowing through gaseous medium generated by heating the non-gaseous medium, the charging pipeline 3 is provided with a pressure sensor 6, a safety valve 7 and a gaseous medium inlet valve 8, the heating pipeline 4 flows through heating medium used for heating the raw material container 1, both ends of the heating pipeline 4 are provided with a heating medium inlet valve 9 and a heating medium outlet valve 10, the discharge pipeline 5 is connected with the safety valve 7 and the heating medium inlet valve 9 respectively, the discharge pipeline 5 is provided with a discharge valve 11, and 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 connected with an external controller 12.

[0027] In the embodiment, when the filled container 2 is filled, the controller 12 controls the gas-phase medium inlet valve 8, the heating medium inlet valve 9 and the heating medium outlet valve 10 to be opened and the safety valve 7 and the relief valve 11 to be closed, 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 controls the safety valve 7 and the relief valve 11 to be opened and the gas-phase medium inlet valve 8 and the heating medium inlet valve 9 to be closed, so that the gas-phase medium in the filling pipeline 3 is discharged to the heating pipeline 4 through the relief 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 in the phase change process, and the heating medium in the heating pipeline 4 is discharged in time to force the heating pipeline 4 to stop working, so that the whole phase change gas production device is in a safe working range, thereby preventing the filled container from being damaged due to the increase of the pressure of the filled container caused by the increase of the volume of the gas during the phase transition of the medium from solid to liquid to gas when the solid and liquid phases are heated.

[0028] Further, the non-gas-phase medium includes solid medium and liquid medium, and the specific type of the solid medium and the liquid medium is not limited in the present application.

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

[0030] Further, a vacuum pump 14 is further included, the vacuum pump 14 is connected with the filling pipeline 3, and the vacuum pump 14 is used to vacuumize the filling pipeline 3, the relief pipeline 5 and the filled container 2 to ensure the purity during the gas filling process.

[0031] Further, 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 an on-off valve 15 to better ensure the safety during the gas filling process.

[0032] Further, the heating pipeline 4 is wound around the outer periphery 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 with a temperature higher than that of the non-gas-phase medium. For example, the heating medium can be hot gas, water, hot oil, ethylene glycol and alcohol, etc. Preferably, the heating medium is water.

[0034] Further, the outside of the raw material container 1 is provided with a safety cylinder 16, and the safety cylinder 16 has an anti-explosion function to better ensure the safety of the raw material container 1.

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

[0036] In addition, the application also provides a phase change gas production method applied to the phase change gas production device in any of the above embodiments, comprising:

[0037] When the charging container 2 is charged, the controller 12 controls the gas phase medium inlet valve 8, the heating medium inlet valve 9 and the heating medium outlet valve 10 to be opened and the safety valve 7 and the discharge valve 11 to be closed, 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 controls the safety valve 7 and the discharge valve 11 to be opened and the gas phase medium inlet valve 8 and the heating medium inlet valve 9 to be closed, so that the gas phase medium in the charging 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 the embodiment, the above technical solution can reasonably utilize the energy contained in the phase change medium in the phase change process, timely discharge the heating medium in the heating pipeline 4, force the heating pipeline 4 to stop working, and make the whole phase change gas production device work in a safe working range, so that the destruction of the charged container caused by the increase of the pressure of the charged container due to the increase of the volume of the gas during the phase transition can be prevented when the solid and liquid phases are heated and the medium changes from solid and liquid to gas.

[0040] Finally, it should be noted that: the above only describes the preferred embodiments of the application, and is used to illustrate the technical solutions of the application, but is not used to limit the protection scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A method of producing gas by phase change, characterized by, The application is applied to a phase change gas production device, which comprises a raw material container, a filled container, a filling pipeline, a heating pipeline and a discharge pipeline, the filling pipeline is connected with the raw material container and the filled container respectively, the raw material container is used for storing non-gas phase medium to be filled, the filling pipeline is used for flowing through gas phase medium generated by heating the non-gas phase medium, the filling pipeline is provided with a pressure sensor, a safety valve and a gas phase medium inlet valve, the heating pipeline is provided with heating medium for heating the raw material container, both ends of the heating pipeline are provided with a heating medium inlet valve and a heating medium outlet valve, the discharge pipeline is connected with the safety valve and the heating medium inlet valve respectively, and the discharge pipeline is provided with a discharge valve, the pressure sensor, the safety valve, the gas phase medium inlet valve, the heating medium inlet valve, the heating medium outlet valve and the discharge valve are connected with an external controller. The method comprises: 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 be opened and the safety valve and the discharge valve to be closed, 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 a preset pressure, the controller is used to control the safety valve and the discharge valve to be opened and 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 discharge pipeline, and the heating medium in the heating pipeline is discharged by using the energy contained in the phase change medium in the phase change process, so as to force the heating pipeline to stop working and make the whole phase change gas production device work in a safe working range.

2. The method of claim 1, wherein, The non-gas phase medium comprises solid medium and liquid medium.

3. The method of claim 1, wherein the phase change gas production method is characterized by, The filling pipeline is further provided with a pressure gauge, which is used to display the current pressure of the filling pipeline.

4. The method of claim 1, wherein the phase change gas production method is characterized by, The device further comprises a vacuum pump connected with the filling pipeline, which is used to vacuumize the filling pipeline, the discharge pipeline and the filled container.

5. The method of claim 4, wherein the phase change gas production method is characterized by, The outlet of the raw material container, the inlet of the filled container and the inlet of the vacuum pump are provided with on-off valves.

6. The method of claim 1, wherein the phase change gas production method is characterized by, The heating pipeline is wound around the outer periphery of the raw material container.

7. The method of claim 1, wherein the phase change gas production method is characterized by, The heating medium comprises at least one medium of gaseous medium and liquid medium with a temperature higher than that of the non-gas phase medium.

8. The method of claim 1-7, wherein, The raw material container is externally provided with a safety cylinder.

9. The method of claim 8, wherein the phase change gas production method is characterized by, A blast-proof isolation wall is arranged between the safety cylinder and the filled container.

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