CN210193405U - Helium gas purification device - Google Patents
Helium gas purification device Download PDFInfo
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- CN210193405U CN210193405U CN201920876408.3U CN201920876408U CN210193405U CN 210193405 U CN210193405 U CN 210193405U CN 201920876408 U CN201920876408 U CN 201920876408U CN 210193405 U CN210193405 U CN 210193405U
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- molecular sieve
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Abstract
The utility model provides a helium gas purification device, the purpose is solved among the current helium gas purification operation molecular sieve life weak point and the costly technical problem who leads to. The purification device comprises an oil removal module, a molecular sieve adsorption module provided with a humidity sensor, a vacuum pump, a PLC (programmable logic controller) and control valves which are respectively arranged in communication pipelines and are connected with the PLC. Wherein, the vacuum pump and the PLC controller both adopt original devices of a helium leakage detection system. The utility model discloses apply to remove the oil gas in the helium that waits to be retrieved in advance through the deoiling module in order to protect the molecular sieve in the molecular sieve adsorption module, avoid it to take place permanent absorption; meanwhile, the molecular sieve is automatically regenerated by the additionally arranged humidity sensor and the original vacuum pump and the PLC in the helium leakage detecting system, so that the service life of the molecular sieve is obviously prolonged by using smaller equipment and manpower input, and the production cost is favorably reduced.
Description
Technical Field
The utility model belongs to the technical field of the helium leak hunting and retrieve technique and specifically relates to a helium purification device is related to.
Background
Helium is a scarce gas which is widely applied to various fields and difficult to regenerate, and the price is extremely high at present, so that the helium is required to be fully recovered and reused. The recovered helium gas inevitably contains a small amount of air and moisture which are continuously enriched in the traditional helium-filled recovery device, and finally the concentration of the helium gas in the recovery tank is reduced to be below the standard, and only the evacuation operation can be carried out to refill new helium gas.
To solve the above problems, various helium gas purification devices have been developed. The molecular sieve is adopted in the purification device to adsorb air and moisture, so that a good purification effect is achieved. The applicant finds that when the helium gas purification device is used after leak detection operation, helium gas is often doped with a leak detection sample and oil gas generated by the leak detection device in the leak detection process. When the molecular sieve is adopted to purify helium for leak detection, oil gas components often form permanent adsorption in the molecular sieve, so that the service life of the molecular sieve is shortened, and the helium recovery cost is high.
Disclosure of Invention
To above-mentioned condition, for overcoming prior art's defect, the utility model provides a helium gas purification device has solved among the current helium gas purification operation short and the costly technical problem who leads to of molecular sieve life.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a helium gas purification device sets up between high-pressure tank and low-pressure tank, includes molecular sieve adsorption module, its characterized in that, this purifier still includes:
the oil removal module is arranged between the high-pressure tank and the molecular sieve adsorption module;
the humidity sensor is arranged in the molecular sieve adsorption module;
the vacuum pump is connected with the molecular sieve adsorption module;
the first control valve is arranged in a pipeline for communicating the oil removal module with the high-pressure tank;
the second control valve is arranged in a pipeline for communicating the oil removal module with the molecular sieve adsorption module;
the third control valve is arranged in a pipeline for communicating the molecular sieve adsorption module with the low-pressure tank;
the fourth control valve is arranged in a pipeline for communicating the molecular sieve adsorption module with the vacuum pump;
and the PLC is respectively connected with the humidity sensor, the vacuum pump, the first control valve, the second control valve, the third control valve and the fourth control valve through communication lines.
Furthermore, the vacuum pump and the PLC both adopt devices of a helium leakage detection system.
Further, the oil removal module comprises a first activated carbon filter, a condensation filter and a second activated carbon filter which are communicated in sequence.
Furthermore, the oil removal module, the high-pressure tank and the molecular sieve adsorption module are movably connected.
Furthermore, the first activated carbon filter, the condensation type filter and the second activated carbon filter are movably connected.
Further, the molecular sieve adsorption module is composed of 1 molecular sieve adsorption tank.
Furthermore, the molecular sieve adsorption module is composed of a first molecular sieve adsorption tank and a second molecular sieve adsorption tank.
Further, the first molecular sieve adsorption tank and the second molecular sieve adsorption tank are respectively provided with an independent second control valve, an independent third control valve and an independent humidity sensor.
The utility model discloses apply to remove the oil gas in the helium that waits to be retrieved in advance through the deoiling module in order to protect the molecular sieve in the molecular sieve adsorption module, avoid it to take place permanent absorption; meanwhile, the molecular sieve is automatically regenerated by the additionally arranged humidity sensor and the original vacuum pump and the PLC in the helium leakage detecting system, so that the service life of the molecular sieve is obviously prolonged by using smaller equipment and manpower input, and the production cost is favorably reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic view of a partial three-dimensional structure of the oil removal module and the molecular sieve adsorption module in an embodiment of the present invention.
Reference numerals: 1. the system comprises a molecular sieve adsorption module, 11. a molecular sieve adsorption tank, 111. a first molecular sieve adsorption tank, 112. a second molecular sieve adsorption tank, 2. an oil removal module, 21. a first activated carbon filter, 22. a condensation type filter, 23. a second activated carbon filter, 3.31.32. a humidity sensor, 4. a vacuum pump, 51. a first control valve, 52.521.522. a second control valve, 53.531.532. a third control valve, 54. a fourth control valve, 6. a PLC (programmable logic controller), 10. a high-pressure tank, 20. a low-pressure tank, 100.200 box and 300. a circuit control device.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the claimed embodiments. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In the embodiments of the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present application. Moreover, the claimed embodiments may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the present invention provides a helium purifying device, which is disposed between a high pressure tank 10 and a low pressure tank 20. The device comprises a molecular sieve adsorption module 1, and air and moisture in helium to be recovered are removed in an adsorption mode.
And the oil removal module 2 is movably connected between the high-pressure tank 10 and the molecular sieve adsorption module 1. Used for removing oil stains in helium to be recovered.
And the humidity sensor 3 is arranged in the molecular sieve adsorption module 1. Is used for monitoring the adsorption condition of the molecular sieve in the molecular sieve adsorption module 1 so as to guide the regeneration operation of the molecular sieve.
And the vacuum pump 4 is connected with the molecular sieve adsorption module 1. The adsorption module 1 is used for decompressing the molecular sieve, and the molecular sieve is promoted to desorb air and moisture to realize regeneration.
And the first control valve 51 is arranged in a pipeline for communicating the oil removal module 2 with the high-pressure tank 10. Used for controlling the time and the purification amount of the helium gas to be recovered for purification.
And the second control valve 52 is arranged in a pipeline for communicating the oil removal module 2 with the molecular sieve adsorption module 1. Used for controlling the connection relationship of the two modules.
And the third control valve 53 is arranged in a pipeline for communicating the molecular sieve adsorption module 1 with the low-pressure tank 20. And is used for controlling the time for guiding the purified helium into the low-pressure tank 20 according to the original working beat of the helium leakage detecting system.
And the fourth control valve 54 is arranged in a pipeline for communicating the molecular sieve adsorption module 1 with the vacuum pump 4. The method is used for controlling the time of the vacuum pump 4 for decompressing and regenerating the molecular sieve adsorption module 1 according to the original working beat of the helium leakage detection system and the purification efficiency of the oil removal module 2 and the molecular sieve adsorption module 1.
And the PLC 6 is respectively connected with the humidity sensor 3, the vacuum pump 4, the first control valve 51, the second control valve 52, the third control valve 53 and the fourth control valve 54 through communication lines. For automated control.
The control valves are all electric control valve bodies.
The vacuum pump 4 and the PLC 6 both adopt devices of a helium leakage detection system. The existing device is fully utilized, the working rate is improved, and the cost is reduced.
The oil removal module 2, the high-pressure tank 10 and the molecular sieve adsorption module 1 are movably connected. Since the oil removal module 2 cannot be regenerated online, it must be replaced periodically. The movable connection mode is adopted to facilitate the replacement operation.
The molecular sieve adsorption module 1 is composed of 1 molecular sieve adsorption tank 11. The molecular sieve adsorption tank 11 is filled with carbon molecular sieve or 13X molecular sieve.
The using method comprises the following steps:
helium purification: after the helium leak detection system finishes single leak detection, the PLC 6 opens the first control valve 51, the second control valve 52 and the third control valve 53, and the leak detection helium in the high-pressure tank 10 is filled into the oil removal module 2 through a pipeline for oil removal treatment. After oil removal, the gas enters the molecular sieve adsorption tank 11 through a pipeline to be dehydrated and air is removed, so that pure helium is obtained. Through subsequent piping into the low pressure tank 20 for storage.
Regenerating the molecular sieve: when the monitored data of the humidity sensor 3 reaches the preset value, the communication signal is sent to the PLC controller 6, so that after the helium purification is completed, the second control valve 52 and the third control valve 53 are closed, and the fourth control valve 54 is opened and the vacuum pump 4 is started. The vacuum pump 4 performs decompression treatment on the molecular sieve adsorption tank 11, so that air and water adsorbed by the molecular sieve in the tank are decomposed, absorbed and removed, and regeneration is realized.
Helium purge and molecular sieve regeneration may not be performed simultaneously.
Example 2
As shown in fig. 2, it is different from example 1 in that the molecular sieve adsorption module 1 is composed of a first molecular sieve adsorption tank 111 and a second molecular sieve adsorption tank 112. Through two sets of jar bodies, can realize helium purification and molecular sieve regeneration simultaneously, guarantee that the normal work beat of helium leak hunting system is not influenced.
The first molecular sieve adsorption tank 111 and the second molecular sieve adsorption tank 112 have independent second control valves 521 and 522, third control valves 531 and 532, and independent humidity sensors 31 and 32, respectively.
The second control valves 521 and 522, the fourth control valves 541 and 542, and the humidity sensors 31 and 32 are connected to the PLC controller 6 through communication lines, respectively.
The using method comprises the following steps:
helium purification: after the helium leak detection system finishes single leak detection, the PLC 6 opens the first control valve 51, the second control valve 521 (or 522) and the third control valve 531 (or 532), and the helium leak detection in the high-pressure tank 10 is filled into the oil removal module 2 through a pipeline for oil removal treatment.
The oil removal module 2 includes a first activated carbon filter 21, a coalescing filter 22, and a second activated carbon filter 23, which are communicated in this order. The helium gas for leak detection has higher temperature, so the content of doped oil vapor is higher. The oil vapor in the helium gas to be recovered is sufficiently removed by two adsorptions by the first activated carbon filter 21 and the second activated carbon 23. Passes through a coalescing filter 22 to remove a small amount of oily aerosol contained in the helium gas to be recovered.
The first activated carbon filter 21, the coalescing filter 22 and the second activated carbon filter 23 are movably connected. So as to be replaced individually according to the use condition of each filter.
After oil removal, the gas enters the first molecular sieve adsorption tank 111 (or the second molecular sieve adsorption tank 112) through a pipeline to be dehydrated and air is removed, so that pure helium is obtained. Through subsequent piping into the low pressure tank 20 for storage.
Regenerating the molecular sieve: when the monitored data of the humidity sensor 31 (or 32) reaches a preset value, the humidity sensor sends a communication signal to the PLC controller 6, the second control valve 522 (or 521) and the third control valve 532 (or 531) are closed, and the fourth control valve 54 is opened and the vacuum pump 4 is started. The vacuum pump 4 performs a pressure reduction process on the second molecular sieve adsorption tank 112 (or the first molecular sieve adsorption tank 111) to desorb and remove air and water adsorbed by the molecular sieve in the tank, thereby realizing regeneration.
Because the helium purification and the molecular sieve regeneration are carried out in different molecular sieve adsorption tanks, the helium purification and the molecular sieve regeneration can be carried out synchronously.
Example 3
As shown in fig. 3, the molecular sieve adsorption module and the oil removal module can be packaged modularly by using independent boxes 100 and 200, and the data transmission ends of the humidity sensor, the first control valve, the second control valve, the third control valve and the fourth control valve are integrated in a peripheral circuit control device 300 of the molecular sieve adsorption module box, and are connected with a PLC controller by using a PLC control bus.
Claims (8)
1. The utility model provides a helium gas purification device sets up between high-pressure tank and low-pressure tank, includes molecular sieve adsorption module, its characterized in that, this purifier still includes:
the oil removal module is arranged between the high-pressure tank and the molecular sieve adsorption module;
the humidity sensor is arranged in the molecular sieve adsorption module;
the vacuum pump is connected with the molecular sieve adsorption module;
the first control valve is arranged in a pipeline for communicating the oil removal module with the high-pressure tank;
the second control valve is arranged in a pipeline for communicating the oil removal module with the molecular sieve adsorption module;
the third control valve is arranged in a pipeline for communicating the molecular sieve adsorption module with the low-pressure tank;
the fourth control valve is arranged in a pipeline for communicating the molecular sieve adsorption module with the vacuum pump;
and the PLC is respectively connected with the humidity sensor, the vacuum pump, the first control valve, the second control valve, the third control valve and the fourth control valve through communication lines.
2. The purification apparatus of claim 1, wherein the vacuum pump and the PLC controller are both provided by a helium leak detection system.
3. The purification apparatus according to claim 1, wherein the oil removal module comprises a first activated carbon filter, a coalescing filter and a second activated carbon filter in series communication.
4. The purification device of claim 1 or 3, wherein the oil removal module is movably connected with the high-pressure tank and the molecular sieve adsorption module.
5. The purification apparatus of claim 3, wherein the first carbon filter, the coalescing filter, and the second carbon filter are movably connected to one another.
6. The purification apparatus of claim 3, wherein the molecular sieve adsorption module is comprised of 1 molecular sieve adsorption tank.
7. The purification apparatus of claim 3, wherein the molecular sieve adsorption module is comprised of a first molecular sieve adsorption tank and a second molecular sieve adsorption tank.
8. The purification apparatus of claim 7, wherein the first molecular sieve adsorption tank and the second molecular sieve adsorption tank have independent second control valve, third control valve, and independent humidity sensor, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876408.3U CN210193405U (en) | 2019-06-12 | 2019-06-12 | Helium gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876408.3U CN210193405U (en) | 2019-06-12 | 2019-06-12 | Helium gas purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210193405U true CN210193405U (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920876408.3U Active CN210193405U (en) | 2019-06-12 | 2019-06-12 | Helium gas purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210193405U (en) |
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- 2019-06-12 CN CN201920876408.3U patent/CN210193405U/en active Active
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