CN218890360U - Helium extraction system - Google Patents

Abstract

The present utility model relates to a helium gas extraction system, wherein the helium gas extraction system comprises: the device comprises an input pipeline module, a helium separation membrane module, a first switching tube group, a vacuum pump, an output pipeline module and a main control module; the helium separation membrane module, the vacuum pump and the output pipeline module are connected through a first switching tube group. Through setting up the mode of first switching nest of tubes to whether can select the helium after helium separation membrane module handles needs to handle once more through the vacuum pump, with the concentration of adjusting the helium of output, in order to reach and to satisfy different helium treatment concentration demands, again can reduce the input of equipment in the system when not needing higher helium concentration, reduce the energy loss in the production process. The helium gas extraction system has the characteristics of good adaptability, high flexibility, good performance and high efficiency.

Description

Helium extraction system

Technical Field

The utility model relates to the field of helium recovery, in particular to a helium extraction system.

Background

Helium is inert gas, colorless, odorless, nontoxic and nonflammable at normal pressure and normal temperature. The material has the lowest critical temperature, is dark yellow in low-voltage discharge, is the most difficult to liquefy, is extremely inactive, cannot burn and flame retardant, and cannot be solidified when helium is at absolute zero under normal pressure. Helium is very widely used in the modern industry due to this characteristic of helium.

Under different fields and different application environments, the concentration requirements on helium are different, but in the prior art, one set of equipment can only extract helium with the same concentration, so that unnecessary waste in the production process can be caused if helium with higher concentration is directly extracted, and the requirement on helium with high concentration cannot be met if helium with lower concentration is directly extracted; meanwhile, the states of the acquired helium are different, and if the helium is processed in a fixed processing mode, the processing requirements under different conditions can not be met.

In the prior art, a helium extraction device capable of extracting helium with different concentrations is urgently needed to be applied to production so as to meet the production requirements of helium with different concentrations.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model provides a helium gas extraction system that can meet the production requirements of helium gas with various concentrations, and has high flexibility and good adaptability.

In order to achieve the above object, the helium gas extraction system of the present utility model has the following constitution:

the helium gas extraction system is mainly characterized by comprising:

the input pipeline module comprises a first input pipe orifice and a first output pipe orifice, and the first input pipe orifice is connected with helium-containing gas to be treated;

the input end of the helium separation membrane module is connected with the first output pipe orifice, and the helium separation membrane module is used for purifying the helium-containing gas to be treated and outputting the purified helium through the output end of the helium separation membrane module;

the first switching tube group comprises a first pipeline, a first pipeline reversing valve, a second pipeline and a third pipeline; the first pipeline is connected with the input end of the first pipeline reversing valve, the first output end of the first pipeline reversing valve is connected with the second pipeline, and the second output end of the first pipeline reversing valve is connected with the third pipeline;

a vacuum pump;

an output pipeline module;

the second pipeline is connected with the input end of the output pipeline module through the vacuum pump, and the third pipeline is directly connected with the input end of the output pipeline module;

the main control module is connected with the control end of the first pipeline reversing valve.

The helium gas extraction system described above, wherein the helium gas extraction system further includes:

a first compression module;

the second switching tube group comprises a fourth pipeline, a second pipeline reversing valve, a fifth pipeline and a sixth pipeline;

the first output pipe orifice is connected with the input end of the helium separation membrane module through the fourth pipeline, the second pipeline reversing valve, the fifth pipeline and the first compression module in sequence, or the first output pipe orifice is connected with the input end of the helium separation membrane module through the fourth pipeline, the second pipeline reversing valve and the sixth pipeline in sequence;

and the control end of the second pipeline reversing valve is connected with the main control module.

The helium gas extraction system described above, wherein the helium gas extraction system further includes:

the air pressure detection module is respectively connected with the input pipeline module and the main control module.

The helium gas extraction system, wherein the first compression module comprises a first compressor, and the first compressor is connected between the fifth pipeline and the input end of the helium gas separation membrane module.

The helium gas extraction system, wherein the first pipeline reversing valve and the second pipeline reversing valve are respectively formed by corresponding reversing valves;

each reversing valve comprises a shell, a piston assembly and a piston control end which are matched, wherein the piston control end is connected with the piston assembly, the piston control end forms a control end of the reversing valve, the shell is provided with an inlet, a first outlet and a second outlet, the piston assembly can be switched between a first position and a second position under the driving of the main control module, when the piston assembly is in the first position, fluid flowing in from the inlet can be guided to the first outlet along a first flow path, and when the piston assembly is in the second position, fluid flowing in from the inlet can be guided to the second outlet along a second flow path;

the inlet of the reversing valve is connected with the corresponding first pipeline or the corresponding fourth pipeline, the first outlet of the reversing valve is connected with the corresponding second pipeline or the corresponding fifth pipeline, and the second outlet of the reversing valve is connected with the corresponding third pipeline or the corresponding sixth pipeline.

The helium gas extraction system described above, wherein the output line module includes:

the second input pipe orifice forms an input end of the output pipeline module;

the input end of the second compression module is connected with the second input pipe orifice;

and the second output pipe orifice is connected with the output end of the second compression module, and the output pipeline module outputs the processed helium gas through the second output pipe orifice.

The helium extraction system comprises a first compressor, wherein the first compression module comprises a first compressor, the input end of the first compressor forms the input end of the first compression module, and the output end of the first compressor forms the output end of the first compression module.

The helium gas extraction system has the following beneficial effects:

according to the helium extraction system, the first switching tube group is arranged, so that whether the helium gas processed by the helium gas separation membrane module needs to be processed again by the vacuum pump or not can be selected, the concentration of the output helium gas can be adjusted, different helium gas processing concentration requirements can be met, equipment investment in the system can be reduced when higher helium gas concentration is not needed, and energy loss in the production process can be reduced. Meanwhile, a second switching tube group is further arranged in the system, and whether the accessed helium-containing gas to be treated is conveyed to the first compression module for boosting and then conveyed to the helium separation membrane module for purification is controlled by utilizing a second pipeline reversing valve in the second switching tube group so as to avoid repeated boosting of the gas which does not need to be compressed. The helium gas extraction system has the characteristics of good adaptability, high flexibility, good performance and high efficiency.

Drawings

The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.

FIG. 1 is a schematic diagram of the helium extraction system of the present utility model in one embodiment.

FIG. 2 is a schematic diagram of a first use condition of the helium extraction system of the present utility model in one embodiment.

FIG. 3 is a schematic diagram of a second use of the helium extraction system of the present utility model in one embodiment.

Reference numerals

1. Helium-containing gas to be treated

21. First pipeline

22 first pipeline reversing valve

23 second pipeline

24 third pipeline

3. Helium gas separation membrane module

4. Vacuum pump

5. First compressor

6. Purified helium gas

7. Exhaust gas

81. Fourth pipeline

82 second pipeline reversing valve

83 fifth pipeline

84 sixth pipeline

9 second compressor

10 helium output

Detailed Description

The utility model is further described with reference to the following detailed description in order to make the technical means, the inventive features, the achieved objects and the effects of the utility model easy to understand. The present utility model is not limited to the following examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model.

The structure of the helium extraction system in one embodiment is further described below with reference to fig. 1:

as shown in fig. 1, in this embodiment, the helium gas extraction system includes:

the input pipeline module comprises a first input pipe orifice and a first output pipe orifice, and the first input pipe orifice is connected with helium-containing gas 1 to be treated;

the helium separation membrane module 3, the input end of the helium separation membrane module 3 is connected with the first output pipe orifice, the helium separation membrane module 3 is used for purifying the helium-containing gas 1 to be treated, and the purified helium 6 is output through the output end of the helium separation membrane module 3;

a first switching tube group including a first tube 21, a first tube direction valve 22, a second tube 23, and a third tube 24; the first pipeline 21 is connected with the input end of the first pipeline reversing valve 22, the first output end of the first pipeline reversing valve 22 is connected with the second pipeline 23, and the second output end of the first pipeline reversing valve 22 is connected with the third pipeline 24;

a vacuum pump 4;

an output pipeline module;

the second pipeline 23 is connected with the input end of the output pipeline module through the vacuum pump 4, and the third pipeline 24 is directly connected with the input end of the output pipeline module;

and the main control module is connected with the control end of the first pipeline reversing valve 22.

The structural design can control the first pipeline reversing valve 22 to adjust whether the purified helium gas 6 needs to be conveyed to the vacuum pump 4 for further treatment according to the requirement, so as to adapt to purification scenes with different purification concentrations, and the adaptability is better.

The helium separation membrane module 3 may be composed of a helium separation membrane, and the purification of helium is effectively achieved by using a membrane separation technology. The helium gas concentration can be purified to more than 95% by using the helium gas separation membrane module 3, so that when more than 95% of helium gas is needed, the purified helium gas 6 can be directly output, and when higher concentration helium gas, such as more than 99% of helium gas, is needed, the purified helium gas 6 can be input into the vacuum pump 4 for vacuumizing and then output by controlling the first pipeline reversing valve 22.

By utilizing the helium extraction system with the structure, the extraction requirements of helium with different concentrations can be met only by adjusting the first pipeline reversing valve 22, the flexibility is higher, the production time can be reduced when helium with lower concentration is extracted, and the helium is further processed when helium with higher concentration is extracted, so that the production requirements are met.

In this embodiment, the helium gas extraction system further comprises:

a first compression module;

a second switching tube group including a fourth tube 81, a second tube switching valve 82, a fifth tube 83, and a sixth tube 84;

the second pipeline reversing valve 82 is controlled so that the first output pipe orifice is connected with the input end of the helium gas separation membrane module 3 through the fourth pipeline 81, the second pipeline reversing valve 82, the fifth pipeline 83 and the first compression module in sequence, or the first output pipe orifice is connected with the input end of the helium gas separation membrane module 3 through the fourth pipeline 81, the second pipeline reversing valve 82 and the sixth pipeline 84 in sequence;

the control end of the second pipeline reversing valve 82 is connected with the main control module.

Whether the helium-containing gas 1 to be processed needs to be conveyed to the helium separation membrane module 3 after passing through the first compression module is controlled by utilizing the second pipeline reversing valve 82 so as to treat gases with different pressures, thereby better improving the treatment efficiency.

In this embodiment, the helium gas extraction system further comprises:

the air pressure detection module is respectively connected with the input pipeline module and the main control module.

In this embodiment, the first compression module comprises a first compressor 5, the first compressor 5 being connected between the fifth conduit 83 and the input of the helium separation membrane module 3.

The air pressure detecting module is not depicted in fig. 1, and in practical application, the air pressure detecting module may be placed at the input pipeline module to detect the position of the pressure of the helium-containing gas 1 to be processed, so as to control the first pipeline reversing valve 22 to perform corresponding adjustment.

In some systems without a pneumatic detection module, the pressure value of the gas can also be directly manually transmitted to the main control module, so as to control the first pipeline reversing valve 22 to perform corresponding adjustment.

In this embodiment, the first pipe selector valve 22 and the second pipe selector valve 82 are each formed of corresponding selector valves;

each reversing valve comprises a shell, a piston assembly and a piston control end which are matched, wherein the piston control end is connected with the piston assembly, the piston control end forms a control end of the reversing valve, the shell is provided with an inlet, a first outlet and a second outlet, the piston assembly can be switched between a first position and a second position under the driving of the main control module, when the piston assembly is in the first position, fluid flowing in from the inlet can be guided to the first outlet along a first flow path, and when the piston assembly is in the second position, fluid flowing in from the inlet can be guided to the second outlet along a second flow path;

the inlet of the reversing valve is connected to the corresponding first pipe or the corresponding fourth pipe 81, the first outlet of the reversing valve is connected to the corresponding second pipe or the corresponding fifth pipe 83, and the second outlet of the reversing valve is connected to the corresponding third pipe 24 or the corresponding sixth pipe 84.

In this embodiment, the output pipeline module includes:

the second input pipe orifice forms an input end of the output pipeline module;

the input end of the second compression module is connected with the second input pipe orifice;

and the second output pipe orifice is connected with the output end of the second compression module, and the output pipeline module outputs the processed helium gas through the second output pipe orifice.

In this embodiment, the second compression module includes a second compressor 9, the input end of the second compressor 9 forms the input end of the second compression module, and the output end of the second compressor 9 forms the output end of the second compression module.

The main control module mentioned in the above system may be composed of a control mechanism in the prior art, which is a component capable of controlling the adjustment of the pipeline reversing valves, and may be an electronic control device (for example, may be composed of a PLC device in the prior art) or a mechanical control device (for example, may be composed of an adjusting switch mounted on each pipeline reversing valve).

The helium extraction system in the above embodiment may perform the following control method of the helium extraction system (note that the following method is only for illustrating the operation manner that the system may perform, and does not mean that the system must rely on specific software to perform the corresponding functions): the control method comprises the following steps:

the main control module controls the first pipeline reversing valve 22 in the first switching tube group to switch according to the preset system condition, and controls whether the helium gas 6 purified by the helium separation membrane module 3 needs to be processed again by the vacuum pump 4 and then output, so as to adjust the concentration of the helium gas output by the output pipeline module. The preset conditions of the system are conditions of helium concentration to be obtained, for example, if 95% concentration helium is needed, purified helium 6 can be directly output, and if 99% concentration helium is needed, purified helium 6 can be conveyed to the vacuum pump 4 and then output. Different purification requirements are effectively met, and the use is more flexible.

The main control module controls the second pipeline reversing valve 82 in the second switching tube group to switch according to the pressure of the helium-containing gas 1 to be processed, which is accessed by the input pipeline module, and controls whether the helium-containing gas 1 to be processed needs to be processed by the first compression module and then is conveyed to the helium separation membrane module 3. If the pressure of helium-containing gas 1 to be treated is less than 0.1Mpa, it is compressed and then sent to helium separation membrane module 3 for purification. The specific pressure threshold value for selecting whether to compress can be adjusted according to the actual requirement, but not limited to, the pressure threshold value is only required to be preset in the main control module, and the corresponding pressure value can be used as a reference for control subsequently.

The helium gas extraction system further comprises a gas pressure detection module, the gas pressure detection module is respectively connected with the input pipeline module and the main control module, and the gas pressure detection module conveys the detected pressure of the helium-containing gas 1 to be processed to the main control module.

In order to make this solution better understood by the person skilled in the art, the following description is given by way of two examples of use:

FIG. 2 is a schematic diagram of a first use condition of the helium extraction system of the present utility model in one embodiment. In this embodiment, as shown in fig. 2, the main control module is used to adjust the first pipeline reversing valve 22 and the second pipeline reversing valve 82 to corresponding positions so that helium-containing gas 1 to be treated sequentially passes through the first compressor 5, the helium separation membrane module 3 and the second compressor 9 in the system to form output helium gas 10 for output. The mode is adapted to the situation that the pressure of the helium-containing gas 1 to be treated is lower than the preset target pressure of the system, the second pipeline reversing valve 82 is controlled to convey the helium-containing gas 1 to the first compressor 5 when in application so as to compress the helium-containing gas 1 to the preset target pressure of the system and convey the helium-containing gas to the helium-separating membrane module 3 for concentration (in other embodiments, if the pressure of the helium-containing gas 1 to be treated reaches the preset target pressure of the system, the second pipeline reversing valve 82 can be controlled to directly convey the helium-containing gas 1 to the helium-separating membrane module 3 so as to save production time), the compressed helium-containing gas 1 to be treated enters the helium-separating membrane module 3 for concentration after being compressed, and the obtained purified helium 6 (namely high-concentration helium) can be conveyed to a tube bundle vehicle or a bottle after being boosted by the second compressor 9. The helium separation membrane module 3 may discharge the remaining gas (i.e., the exhaust gas 7) in the helium-containing gas 1 to be treated during the treatment.

Purifying helium with the helium extraction system in this state can concentrate helium-containing gas 1 to be treated having a helium concentration of 85% or more to 95% or more.

The operating parameters of the helium extraction system in this state are as follows:

(1) The ultimate low pressure (namely the preset target pressure of the system) of the device is 0.1MPa, the higher the pressure is, the lower the investment is, the better the separation effect is, but the pressure of 0.2MPa can meet the requirement, and the maximum pressure is not more than 0.3MPa.

(2) The temperature, this device need not to heat, also need not to cool down.

(3) The flow rate is not limited.

The helium extraction system in this state operates at extremely low pressure and with low energy consumption. The method has the advantages of simple process, low investment, low energy consumption, low operation cost, flexible operation and small occupied area, can realize vehicle-mounted and remarkable economic benefit, and can greatly meet the demand of helium in China.

FIG. 3 is a schematic diagram of a second use of the helium extraction system of the present utility model in one embodiment. As shown in fig. 3, in this embodiment, the main control module is used to adjust the first pipeline reversing valve 22 and the second pipeline reversing valve 82 to corresponding positions, so that the helium-containing gas 1 to be treated sequentially passes through the helium gas separation membrane module 3, the vacuum pump 4 and the second compressor 9 in the system to form output helium gas 10 for output. The mode is suitable for the condition that the pressure of helium-containing gas 1 to be treated reaches the preset target pressure of the system, so that the second pipeline reversing valve 82 is controlled to directly convey the helium-containing gas 1 to be treated to the helium separation membrane module 3 for concentration without passing through the first compressor 5, so that the time required for compression is effectively reduced, then the gas concentrated by the helium separation membrane module 3 is conveyed to the vacuum pump 4 through the first pipeline reversing valve 22, is subjected to permeation vacuum pumping, is conveyed to the second compressor 9 for boosting, and is conveyed to a tube bundle vehicle or a bottle for better obtaining helium with higher concentration, and the helium-containing gas 1 to be treated with concentration of more than 80% can be concentrated to more than 99% by the system in the treatment process. The helium separation membrane module 3 may discharge the remaining gas (i.e., the exhaust gas 7) in the helium-containing gas 1 to be treated during the treatment.

The operating parameters of the helium extraction system in this state are as follows:

(1) The vacuum degree of the device is-0.08 MPa.

(2) The temperature, this device need not to heat, also need not to cool down.

(3) The flow rate is not limited.

The helium extraction system in the state has the advantages that raw gas is not boosted, the permeation side is vacuumized, the helium recovery rate is high, the concentration ratio is large, the pressurization is not needed for gas, the process is simple, the investment is low, the energy consumption is low, the operation cost is low, the operation is flexible, the occupied area is small, the vehicle-mounted helium extraction system can be realized, the economic benefit is obvious, and the requirement of the helium in China can be effectively met.

In other application examples, the system can be adjusted to different modes according to corresponding requirements, which is not described herein.

According to the helium extraction system, the first switching tube group is arranged, so that whether the helium gas processed by the helium gas separation membrane module needs to be processed again by the vacuum pump or not can be selected, the concentration of the output helium gas can be adjusted, different helium gas processing concentration requirements can be met, equipment investment in the system can be reduced when higher helium gas concentration is not needed, and energy loss in the production process can be reduced. Meanwhile, a second switching tube group is further arranged in the system, and whether the accessed helium-containing gas to be treated is conveyed to the first compression module for boosting and then conveyed to the helium separation membrane module for purification is controlled by utilizing a second pipeline reversing valve in the second switching tube group so as to avoid repeated boosting of the gas which does not need to be compressed. The helium gas extraction system has the characteristics of good adaptability, high flexibility, good performance and high efficiency.

In the helium gas extraction system technical scheme of the utility model, each of the included functional modules and module units can correspond to a specific hardware circuit in an integrated circuit structure, so that only the improvement of the specific hardware circuit is related, the hardware part does not only belong to a carrier for executing control software or a computer program, and therefore, corresponding technical problems are solved and corresponding technical effects are obtained, and the application of the control software or the computer program is not related, namely, the technical problems to be solved can be solved and corresponding technical effects are obtained only by utilizing the improvement of the hardware circuit structure related to the modules and the modules, and corresponding functions can be realized without assistance of specific control software or computer programs.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (7)

1. A helium extraction system, comprising:

the input pipeline module comprises a first input pipe orifice and a first output pipe orifice, and the first input pipe orifice is connected with helium-containing gas to be treated;

the input end of the helium separation membrane module is connected with the first output pipe orifice, and the helium separation membrane module is used for purifying the helium-containing gas to be treated and outputting the purified helium through the output end of the helium separation membrane module;

the first switching tube group comprises a first pipeline, a first pipeline reversing valve, a second pipeline and a third pipeline; the first pipeline is connected with the input end of the first pipeline reversing valve, the first output end of the first pipeline reversing valve is connected with the second pipeline, and the second output end of the first pipeline reversing valve is connected with the third pipeline;

a vacuum pump;

an output pipeline module;

the second pipeline is connected with the input end of the output pipeline module through the vacuum pump, and the third pipeline is directly connected with the input end of the output pipeline module;

the main control module is connected with the control end of the first pipeline reversing valve.

2. The helium extraction system of claim 1, further comprising:

a first compression module;

the second switching tube group comprises a fourth pipeline, a second pipeline reversing valve, a fifth pipeline and a sixth pipeline;

the first output pipe orifice is connected with the input end of the helium separation membrane module through the fourth pipeline, the second pipeline reversing valve, the fifth pipeline and the first compression module in sequence, or the first output pipe orifice is connected with the input end of the helium separation membrane module through the fourth pipeline, the second pipeline reversing valve and the sixth pipeline in sequence;

and the control end of the second pipeline reversing valve is connected with the main control module.

3. The helium extraction system of claim 2, further comprising:

the air pressure detection module is respectively connected with the input pipeline module and the main control module.

4. The helium extraction system of claim 2, wherein the first compression module comprises a first compressor coupled between the fifth conduit and an input of the helium separation membrane module.

5. The helium extraction system of claim 2, wherein the first and second conduit reversing valves are each comprised of a corresponding reversing valve;

each reversing valve comprises a shell, a piston assembly and a piston control end which are matched, wherein the piston control end is connected with the piston assembly, the piston control end forms a control end of the reversing valve, the shell is provided with an inlet, a first outlet and a second outlet, the piston assembly can be switched between a first position and a second position under the driving of the main control module, when the piston assembly is in the first position, fluid flowing in from the inlet can be guided to the first outlet along a first flow path, and when the piston assembly is in the second position, fluid flowing in from the inlet can be guided to the second outlet along a second flow path;

the inlet of the reversing valve is connected with the corresponding first pipeline or the corresponding fourth pipeline, the first outlet of the reversing valve is connected with the corresponding second pipeline or the corresponding fifth pipeline, and the second outlet of the reversing valve is connected with the corresponding third pipeline or the corresponding sixth pipeline.

6. The helium extraction system of claim 1, wherein the output piping module comprises:

the second input pipe orifice forms an input end of the output pipeline module;

the input end of the second compression module is connected with the second input pipe orifice;

and the second output pipe orifice is connected with the output end of the second compression module, and the output pipeline module outputs the processed helium gas through the second output pipe orifice.

7. The helium extraction system of claim 6, wherein the second compression module comprises a second compressor, an input of the second compressor forming an input of the second compression module, and an output of the second compressor forming an output of the second compression module.

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