Intelligent efficient helium purification equipment

Abstract

The utility model discloses intelligent efficient helium purification equipment which comprises a shell, a waste gas tank is arranged in the shell, a helium purity instrument is installed on the top of the waste gas tank, the input end of one side of the waste gas tank is communicated with a waste gas input port, and the output end of the waste gas tank is communicated with a first booster pump. The output end of the first booster pump communicates with a high-pressure helium tank, and the output end of the high-pressure helium tank communicates with a first helium purifier. The utility model relates to the technical field of helium purification equipment, and solves the problems that in the prior art, although the helium purification can be realized to a certain extent, the helium purification efficiency is low, the concentration requirement can be met only by circulating multiple purification operations, a great deal of helium loss is caused in multiple purification processes, and the helium purification cost is low. The problems that the helium recovery rate is obviously reduced, the purification cost is increased, and large resource waste is caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of helium purification equipment, in particular to intelligent and efficient helium purification equipment. Background Art

[0002] Helium purification equipment is a device for purifying helium. Its main function is to separate high-purity helium from mixed gases. It is widely used in scientific research, industry, medical treatment, semiconductors, optical fibers and other fields. It is an important tool for obtaining high-purity helium. The working principle of helium purification equipment is mainly based on gas separation technology, of which the most commonly used are low-temperature fractionation and membrane separation. Low-temperature fractionation uses the difference in boiling points between helium and other gases to liquefy helium at low temperatures and separate it from other gases by precisely controlling the temperature. The membrane separation method uses a membrane made of special materials to separate helium from other gases through the difference in adsorption and diffusion rates of gas molecules on the membrane. In the prior art, although helium purification can be achieved to a certain extent, the efficiency of helium purification is low, and it is often necessary to circulate multiple purification operations to meet the concentration requirements. During the multiple purification processes, a large amount of helium will be lost, resulting in a significant reduction in the recovery rate of helium, which not only increases the purification cost, but also causes a large waste of resources. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an intelligent and efficient helium purification device, which solves the problem in the prior art that, although helium purification can be achieved to a certain extent, the efficiency of helium purification is low, and it is often necessary to cycle through multiple purification operations to meet the concentration requirements. A large amount of helium will be lost during the multiple purification processes, resulting in a significant reduction in the recovery rate of helium, which not only increases the purification cost, but also causes a large waste of resources.

[0004] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: an intelligent and efficient helium purification device, comprising a shell, a waste gas tank is arranged inside the shell, a helium purity instrument is installed on the top of the waste gas tank, an input end on one side of the waste gas tank is connected to a waste gas input port, an output end of the waste gas tank is connected to a first booster pump, an output end of the first booster pump is connected to a high-pressure helium tank, an output end of the high-pressure helium tank is connected to a first helium purifier, an output end of the first helium purifier is connected to a qualified gas discharge port, and a bottom end of the first helium purifier is connected to a second helium purifier. A waste gas discharge pipe is connected to one end of the top of the second helium purifier, a low-pressure gas storage tank is connected to the output end of the second helium purifier, a second booster pump is connected to the output end of the low-pressure gas storage tank, a third helium purifier is connected to the output end of the second booster pump, and a waste gas tank is connected to the output end of the third helium purifier. A circulation pipe is connected to one end of the bottom of the third helium purifier, and one end of the circulation pipe away from the third helium purifier is connected to the input end of the second helium purifier. A controller is installed inside the shell, and the first booster pump, the second booster pump and the helium purity instrument are all electrically connected to the controller.

[0005] Preferably, the input ends of the first helium purifier, the second helium purifier and the third helium purifier are all equipped with pressure reducing valves, and the ends of the first helium purifier, the second helium purifier and the third helium purifier away from the pressure reducing valve are all equipped with exhaust solenoid valves, and the exhaust solenoid valves are electrically connected to the controller.

[0006] Preferably, the output end of the exhaust gas tank is connected to a filtering device, and the output end of the filtering device is connected to the first boosting pump.

[0007] Preferably, a first pressure sensor is installed on the top of the high-pressure helium tank, and a second pressure sensor is installed on the top of the low-pressure gas storage tank, and both the first pressure sensor and the second pressure sensor are electrically connected to the controller.

[0008] Preferably, the output end of the filtering device is connected to a first flow meter, the output end of the first flow meter is connected to a first boosting pump, the exhaust gas discharge pipe is installed with a second flow meter, and the first flow meter and the second flow meter are both electrically connected to a controller.

[0009] The utility model provides an intelligent and efficient helium purification device. It has the following beneficial effects: the intelligent and efficient helium purification device, through the coordination among the shell, the waste gas tank, the waste gas inlet, the first booster pump, the high-pressure helium tank, the first helium purifier, the qualified gas outlet, the second helium purifier, the waste gas outlet pipe, the low-pressure gas storage tank, the second booster pump, the third helium purifier, the circulation pipe, the controller and the helium purity instrument, can greatly improve the overall recovery rate of helium by performing multi-stage purification and cyclic secondary purification on the recovered helium, reduce the emission consumption of helium, realize the sustainable utilization of helium resources, significantly reduce the cost of helium recovery and purification, and help enterprises reduce production costs.

[0010] Through the cooperation among the first helium purifier, the second helium purifier, the third helium purifier, the controller, the exhaust solenoid valve and the pressure reducing valve, the working pressure of each level of helium purifier is controlled by the pressure reducing valve, and each exhaust solenoid valve is automatically controlled by the controller, so that a certain pressure difference is formed between the helium purifiers at each level, ensuring that the gas is stably transported along the set route between the helium purifiers at each level, improving the automation rate of the helium purification equipment, enabling the helium purification equipment to be automatically and intelligently controlled, and improving the operating efficiency and stability of the equipment, which helps to reduce the maintenance frequency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 A partial enlarged view of area A.

[0013] In the figure: 1, shell, 2, exhaust gas tank, 3, exhaust gas inlet, 4, first booster pump, 5, high-pressure helium tank, 6, first helium purifier, 7, qualified gas outlet, 8, second helium purifier, 9, exhaust gas discharge pipe, 10, low-pressure gas storage tank, 11, second booster pump, 12, third helium purifier, 13, circulation pipe, 14, controller, 15, exhaust solenoid valve, 16, helium purity meter, 17, pressure reducing valve, 18, filtering device, 19, first pressure sensor, 20, second pressure sensor, 21, first flow meter, 22, second flow meter. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the prior art, although helium purification can be achieved to a certain extent, the efficiency of helium purification is low, and it is often necessary to cycle through multiple purification operations to achieve the concentration requirements. During the multiple purification processes, a large amount of helium will be lost, resulting in a significant reduction in the helium recovery rate, which not only increases the purification cost, but also causes a large waste of resources.

[0016] In view of this, the utility model provides an intelligent and efficient helium purification device, which can greatly improve the overall recovery rate of helium, reduce the emission consumption of helium, realize the sustainable utilization of helium resources, and significantly reduce the cost of helium recovery and purification by coordinating the shell, waste gas tank, waste gas inlet, first booster pump, high-pressure helium tank, first helium purifier, qualified gas outlet, second helium purifier, waste gas outlet pipe, low-pressure gas storage tank, second booster pump, third helium purifier, circulation pipe, controller and helium purity instrument to recover helium through multi-stage purification and cyclic secondary purification.

[0017] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0018] Depend on Figure 1-2It can be seen that an intelligent and efficient helium purification device includes a shell 1, which is the outer shell structure of the helium purification device and is equipped with a control panel connected to a controller 14, which is convenient for adjusting and controlling the helium purification device. A waste gas tank 2 is arranged inside the shell 1, and the waste gas tank 2 is a waste gas storage tank for the helium purification device. A helium purity meter 16 is installed on the top of the waste gas tank 2. The helium purity meter 16 is used to measure the concentration of the recovered helium in the waste gas tank 2 and transmit the measurement signal to the controller 14 in real time, so that the control system can perform corresponding operations according to the helium concentration data. An input end on one side of the waste gas tank 2 is connected to a waste gas input port 3, an output end of the waste gas tank 2 is connected to a first booster pump 4, an output end of the first booster pump 4 is connected to a high-pressure helium tank 5, an output end of the high-pressure helium tank 5 is connected to a first helium purifier 6, and an output end of the first helium purifier 6 is connected to a qualified A gas outlet 7 is provided, a bottom end of the first helium purifier 6 is connected to a second helium purifier 8, a top end of the second helium purifier 8 is connected to an exhaust gas discharge pipe 9, an output end of the second helium purifier 8 is connected to a low-pressure gas storage tank 10, an output end of the low-pressure gas storage tank 10 is connected to a second booster pump 11, an output end of the second booster pump 11 is connected to a third helium purifier 12, an output end of the third helium purifier 12 is connected to an exhaust gas tank 2, a bottom end of the third helium purifier 12 is connected to a circulation pipe 13, an end of the circulation pipe 13 away from the third helium purifier 12 is connected to an input end of the second helium purifier 8, a controller 14 is installed inside the housing 1, the controller 14 is used for regulating and controlling various electrical components of the helium purification equipment, and receiving measurement signals of the detection element, the first booster pump 4, the second booster pump 11 and the helium purity instrument 16 are all electrically connected to the controller 14;

[0019] In the specific implementation process, it is worth pointing out that the shell 1 is the outer shell structure of the helium purification equipment, and is equipped with a control panel connected to the controller 14, which is convenient for adjusting and controlling the helium purification equipment. The waste gas tank 2 is a waste gas storage tank of the helium purification equipment, which is used to store the recovered helium with a concentration lower than the set value delivered by the waste gas inlet 3. The helium purity meter 16 is used to measure the concentration of the recovered helium in the waste gas tank 2 and transmit the measurement signal to the controller 14 in real time, so that the control system can perform corresponding operations according to the helium concentration data. Through the cooperation between the waste gas tank 2, the first booster pump 4, the high-pressure helium tank 5 and the controller 14, the first booster pump 4 is controlled by the controller 14, so that the recovered helium in the waste gas tank 2 is delivered to the high-pressure helium tank 5. The high-pressure helium tank 5 is filled with helium, and the recovered helium in the high-pressure helium tank 5 is kept within a certain pressure range, so that the recovered helium is subsequently transported to the recovery and purification module. Through the cooperation among the high-pressure helium tank 5, the first helium purifier 6 and the qualified gas outlet 7, the recovered helium in the high-pressure helium tank 5 is transported to the first helium purifier 6 for purification, and the purity of the helium is purified from about 75% to more than 95%. The purified helium is discharged from the qualified gas outlet 7 for use, and the remaining gas is continuously transported downward from the bottom of the first helium purifier 6. Through the cooperation among the first helium purifier 6, the second helium purifier 8, the exhaust gas discharge pipe 9 and the low-pressure gas storage tank 10, due to the certain difference in working pressure between the first helium purifier 6 and the second helium purifier 8, the first helium purifier 6 is used to purify the helium. The gas discharged from the bottom of the purifier 6 enters the second helium purifier 8 for secondary purification. The purified gas is transported from the output end of the second helium purifier 8 to the low-pressure gas storage tank 10. The remaining gas with a low concentration is discharged from the waste gas discharge pipe 9 at the top of the second helium purifier 8. Through the cooperation between the low-pressure gas storage tank 10, the second booster pump 11, the third helium purifier 12 and the circulation pipe 13, the gas in the low-pressure gas storage tank 10 is pressurized and transported to the third helium purifier 12 by the second booster pump 11 for tertiary purification. The purified gas is transported from the output end of the third helium purifier 12 to the waste gas tank 2 for secondary recovery. The remaining gas with a low concentration is transported to the output end of the second helium purifier 8 again through the circulation pipe 13 for circulation. The controller 14 is used for regulating and controlling the electrical components of the helium purification equipment and receiving the measurement signal of the detection element. Through the cooperation among the housing 1, the waste gas tank 2, the waste gas input port 3, the first booster pump 4, the high-pressure helium tank 5, the first helium purifier 6, the qualified gas outlet 7, the second helium purifier 8, the waste gas outlet pipe 9, the low-pressure gas storage tank 10, the second booster pump 11, the third helium purifier 12, the circulation pipe 13, the controller 14 and the helium purity instrument 16, the recovered helium enters the first helium purifier 6 after being pressurized, and the purification port of the first helium purifier 6 releases helium with a concentration of ≥95% for direct discharge and use. At the same time, the helium concentration in the exhaust gas of the first helium purifier 6 is about 17%, and enters the second helium purifier 8 for a second purification.The helium concentration in the exhaust gas of the second helium purifier 8 will drop below 3%, and the exhaust gas will be directly discharged and released through the exhaust gas exhaust pipe 9. The purification port of the second helium purifier 8 releases helium with a concentration of 35% to 40%, which is transported to the third helium purifier 12 through pressurization for the third purification. The purification port of the third helium purifier 12 releases helium with a concentration of about 70%, and then returns to the exhaust gas tank 2 for the next purification cycle. The helium concentration in the exhaust gas of the third helium purifier 12 is about 17%, and enters the second helium purifier 8 again for circulation purification. By performing multi-stage purification and cyclic secondary purification on the recovered helium, the overall recovery rate of helium can be greatly improved, the emission consumption of helium can be reduced, the sustainable utilization of helium resources can be achieved, and the cost of helium recovery and purification can be significantly reduced. The specific models of the first booster pump 4, the second booster pump 11, the controller 14 and the helium purity instrument 16 are not limited, and can meet the use requirements;

[0020] Further, the input ends of the first helium purifier 6, the second helium purifier 8 and the third helium purifier 12 are all equipped with a pressure reducing valve 17, which is installed at the input end of each helium purifier to adjust the gas pressure input to the helium purifier, reduce the high-pressure helium to the working pressure, ensure that the helium is stably transported between the purifiers along the set route, and improve the purification efficiency of the helium. The first helium purifier 6, the second helium purifier 8 and the third helium purifier 12 are all equipped with an exhaust solenoid valve 15 at one end away from the pressure reducing valve 17. The exhaust solenoid valve 15 is used to control the discharge of the waste gas generated by the helium purification of each purifier. The controller 14 automatically controls each exhaust solenoid valve 15, so that the waste gas filtered out of each purifier can be transported according to the set transportation route, and the exhaust solenoid valve 15 is electrically connected to the controller 14;

[0021] In the specific implementation process, it is worth pointing out that the pressure reducing valve 17 is installed at the input end of each helium purifier to adjust the gas pressure input to the helium purifier, reduce the high-pressure helium to the working pressure, so that a subtle pressure difference is formed between the helium purifiers at each level, ensuring that the helium is stably transported along the set route between the purifiers at each level, and improving the purification efficiency of the helium. The exhaust solenoid valve 15 is used to control the discharge of the waste gas generated by the helium purification of each purifier. The controller 14 automatically controls each exhaust solenoid valve 15, so that the waste gas filtered out of each purifier can be transported according to the set transportation route, through the first helium purifier 6, the second helium purifier 7, and the exhaust solenoid valve 15. The coordination between the gas purifier 8, the third helium purifier 12, the controller 14, the exhaust solenoid valve 15 and the pressure reducing valve 17 is used to control the working pressure of each level of helium purifier through the pressure reducing valve 17, and each exhaust solenoid valve 15 is automatically controlled by the controller 14, so that there is a certain pressure difference between the helium purifiers at each level, ensuring that the gas is stably transported along the set route between the helium purifiers at each level, improving the automation rate of the helium purification equipment, realizing the automation and intelligent control of the helium purification equipment, not only improving the operation efficiency and stability of the equipment, but also reducing the maintenance cost. The specific model of the exhaust solenoid valve 15 is not limited, and it can meet the use requirements;

[0022] Furthermore, the output end of the exhaust gas tank 2 is connected to a filter device 18, and the output end of the filter device 18 is connected to the first booster pump 4;

[0023] In the specific implementation process, it is worth pointing out that by adding the filter device 18 between the waste gas tank 2 and the first booster pump 4, the gas can be filtered through the filter device 18 when it is transported to the first booster pump 4, and the oil, water and particulate impurities in the waste helium gas can be removed, which not only protects the first booster pump 4 and prolongs its service life, but also improves the efficiency and stability of the entire waste gas recovery and purification module, and the filter device 18 can be cleaned or the filter element can be replaced regularly to ensure that its filtering effect is continuously effective;

[0024] Further, a first pressure sensor 19 is installed on the top of the high-pressure helium tank 5, and the first pressure sensor 19 is used to measure the gas pressure of the high-pressure helium tank 5, and transmit the measurement signal to the controller 14 in real time, and a second pressure sensor 20 is installed on the top of the low-pressure gas storage tank 10, and the second pressure sensor 20 is used to measure the gas pressure of the low-pressure gas storage tank 10, and the first pressure sensor 19 and the second pressure sensor 20 are both electrically connected to the controller 14;

[0025] In the specific implementation process, it is worth pointing out that the first pressure sensor 19 is used to measure the gas pressure of the high-pressure helium tank 5 and transmit the measurement signal to the controller 14 in real time, and the second pressure sensor 20 is used to measure the gas pressure of the low-pressure gas storage tank 10 and transmit the measurement signal to the controller 14 in real time. By measuring the gas pressures of the high-pressure helium tank 5 and the low-pressure gas storage tank 10, it is convenient for the control system to adjust the working states of the first booster pump 4 and the second booster pump 11 according to actual needs, so that the high-pressure helium tank 5 and the low-pressure gas storage tank 10 are maintained within a stable pressure range to transport the gas, thereby ensuring stable gas transportation. The specific models of the first pressure sensor 19 and the second pressure sensor 20 are not limited, and they can meet the use requirements;

[0026] Further, the output end of the filter device 18 is connected to a first flow meter 21, the first flow meter 21 is used to measure the amount of exhaust gas delivered from the exhaust tank 2 to the first booster pump 4, and transmit the measurement signal to the controller 14 in real time, the output end of the first flow meter 21 is connected to the first booster pump 4, the exhaust gas discharge pipe 9 is installed with a second flow meter 22, the second flow meter 22 is used to measure the amount of exhaust gas discharged from the exhaust gas discharge pipe 9, and transmit the measurement signal to the controller 14 in real time, the first flow meter 21 and the second flow meter 22 are both electrically connected to the controller 14;

[0027] In the specific implementation process, it is worth pointing out that the first flow meter 21 is used to measure the amount of waste gas delivered to the first boosting pump 4 from the waste gas tank 2, and transmit the measurement signal to the controller 14 in real time, and the second flow meter 22 is used to measure the amount of waste gas discharged from the waste gas discharge pipe 9, and transmit the measurement signal to the controller 14 in real time. By measuring the amount of waste gas delivered to the recovery and purification module and the amount of waste gas discharged from the recovery and purification module, the control system can accurately calculate the recovery and purification ratio of helium, thereby accurately calculating the loss and efficiency of helium in the recovery and purification process. The specific models of the first flow meter 21 and the second flow meter 22 are not limited, and they can meet the use requirements.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent and efficient helium purification device, comprising a housing (1), characterized in that: A waste gas tank (2) is arranged inside the shell (1), a helium purity instrument (16) is installed on the top of the waste gas tank (2), an input end on one side of the waste gas tank (2) is connected to a waste gas input port (3), an output end of the waste gas tank (2) is connected to a first booster pump (4), an output end of the first booster pump (4) is connected to a high-pressure helium tank (5), an output end of the high-pressure helium tank (5) is connected to a first helium purifier (6), an output end of the first helium purifier (6) is connected to a qualified gas outlet (7), a bottom end of the first helium purifier (6) is connected to a second helium purifier (8), a top end of the second helium purifier (8) is connected to a waste gas outlet pipe (9), and the second helium purifier (6) is connected to a second helium purifier (8). The output end of the purifier (8) is connected to a low-pressure gas storage tank (10), the output end of the low-pressure gas storage tank (10) is connected to a second booster pump (11), the output end of the second booster pump (11) is connected to a third helium purifier (12), the output end of the third helium purifier (12) is connected to the waste gas tank (2), one end of the bottom of the third helium purifier (12) is connected to a circulation pipe (13), one end of the circulation pipe (13) away from the third helium purifier (12) is connected to the input end of the second helium purifier (8), a controller (14) is installed inside the housing (1), and the first booster pump (4), the second booster pump (11) and the helium purity instrument (16) are all electrically connected to the controller (14).

2. The intelligent and efficient helium purification equipment according to claim 1, characterized in that: The input ends of the first helium purifier (6), the second helium purifier (8) and the third helium purifier (12) are all equipped with pressure reducing valves (17); the ends of the first helium purifier (6), the second helium purifier (8) and the third helium purifier (12) away from the pressure reducing valves (17) are all equipped with exhaust solenoid valves (15); the exhaust solenoid valves (15) are electrically connected to the controller (14).

3. The intelligent and efficient helium purification equipment according to claim 1, characterized in that: The output end of the waste gas tank (2) is connected to a filter device (18), and the output end of the filter device (18) is connected to a first booster pump (4).

4. The intelligent and efficient helium purification equipment according to claim 1, characterized in that: A first pressure sensor (19) is installed on the top of the high-pressure helium tank (5), and a second pressure sensor (20) is installed on the top of the low-pressure gas storage tank (10); the first pressure sensor (19) and the second pressure sensor (20) are both electrically connected to the controller (14).

5. The intelligent and efficient helium purification equipment according to claim 3, characterized in that: The output end of the filtering device (18) is connected to a first flow meter (21), and the output end of the first flow meter (21) is connected to a first boosting pump (4). The exhaust gas discharge pipe (9) is equipped with a second flow meter (22), and both the first flow meter (21) and the second flow meter (22) are electrically connected to a controller (14).

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