Reutilization device for emptying argon of liquid argon storage tank

Abstract

The utility model provides a device for recycling emptying argon of a liquid argon storage tank. The emptying argon recycling device of the liquid argon storage tank comprises the liquid argon storage tank, a pressure valve, a heat exchanger, a condensing assembly for condensing argon by using liquid argon, a cleaning assembly for cleaning impurities generated by long-time heat exchange, and a vaporizer, according to the emptying argon recycling device for the liquid argon storage tank, due to the arrangement of all the structures, when the pressure of the storage tank is too large and argon is discharged, the discharged argon can be recycled and is vaporized by the vaporizer after being condensed, so that energy waste is reduced, the cleaning assembly is used for cleaning the heat exchanger which works for a long time, and the cleaning efficiency is improved. The service life of the heat exchanger is greatly prolonged, and meanwhile the problem that the heat exchange effect is affected by impurities left on the inner wall of the heat exchanger is solved.

Description

Technical Field

[0001] This utility model relates to the field of argon gas recycling technology, and in particular to a device for recycling argon gas from a liquid argon storage tank. Background Technology

[0002] The main products of air separation units are oxygen and nitrogen; argon contains only 0.932% of air, so some small air separation units and some units with outdated processes cannot produce argon. Since argon is produced in liquid form in air separation units, liquid argon storage tanks must be provided for use and sale.

[0003] In existing technologies, firstly, due to the increased pressure at the top of the storage tank, the pressure valve opens to release the gas, causing most of the argon gas to be directly discharged into the air, resulting in a large amount of argon gas being wasted. Although some equipment can recover the discharged argon gas, it still requires external cooling energy for condensation, resulting in energy waste. Secondly, when the heat exchanger is in heat exchange operation for a long time, the inner wall of the gas zone of the heat exchanger is in contact with argon gas and condensed liquid argon for a long time, and impurities are easily attached to the surface of the gas zone of the heat exchanger, thereby affecting the heat exchange effect and reducing the service life.

[0004] Therefore, in the current environment, there is a need to design a device for reusing argon gas from a liquid argon storage tank to solve the technical problems mentioned in the background. Utility Model Content

[0005] This invention provides a device for reusing argon gas from a liquid argon storage tank to solve the technical problems mentioned in the background section.

[0006] This utility model provides a liquid argon storage tank venting and argon gas reuse device. The device includes a liquid argon storage tank, a pressure valve, a heat exchanger, a condensation component for condensing argon gas using liquid argon, a cleaning component for cleaning impurities generated during prolonged heat exchange, and a vaporizer. The liquid argon storage tank is placed vertically on the ground. The pressure valve is installed at the top of the liquid argon storage tank. The heat exchanger is placed vertically on the ground and located on one side of the liquid argon storage tank. The heat exchanger is divided into an upper liquid zone, a lower liquid zone, and a gas zone. The condensation component is installed inside the heat exchanger. The cleaning component is installed at the top of the condensation component. The vaporizer is placed vertically on the ground and located on one side of the condensation component.

[0007] Optionally, the condensation assembly includes a first pipe, a hydraulic pump, a second pipe, a third pipe, a fourth pipe, a fifth pipe, and a heat exchange section for achieving heat exchange. One end of the first pipe is connected to the bottom of the liquid argon storage tank, and the hydraulic pump is installed at the other end of the first pipe. One end of the second pipe is installed at the top of the hydraulic pump, and the other end of the second pipe is connected to the upper liquid zone of the heat exchanger. One end of the third pipe is connected to the liquid argon storage tank, and the other end of the third pipe is connected to the gas zone of the heat exchanger. One end of the fourth pipe is connected to the lower liquid zone of the heat exchanger, and the other end of the fourth pipe is connected to the vaporizer. One end of the fifth pipe is connected to the gas zone of the heat exchanger, and the other end of the fifth pipe is connected to the liquid argon storage tank. The heat exchange section is installed inside the heat exchanger.

[0008] Optionally, the heat exchange section includes multiple insulating plates, multiple guide plates, multiple heat exchange tubes, and multiple mounting plates. The multiple insulating plates are respectively installed inside the heat exchanger and are located at the junction of the upper and lower liquid zones and the gas zone of the heat exchanger. The multiple guide plates are installed inside the heat exchanger and are located between the multiple insulating plates. The multiple heat exchange tubes pass through the multiple insulating plates and are respectively connected at both ends to the upper and lower liquid zones of the heat exchanger. The multiple mounting plates are respectively installed on the multiple guide plates.

[0009] Optionally, the cleaning assembly includes a support frame, a circular slide groove, a rotating slider, and a cleaning part for performing the cleaning function. The support frame is installed on the outer wall of the heat exchanger, the circular slide groove is installed at the bottom end of the support frame, the rotating slider is slidably disposed on the circular slide groove, and the cleaning part is installed on the rotating slider.

[0010] Optionally, the cleaning unit includes a connecting block, multiple sector-shaped bases, multiple cylinders, a scraper, a wiping plate, a water inlet, and a nozzle. The connecting block is mounted on the rotating slider. The multiple sector-shaped bases are mounted at both ends of the connecting block. The multiple cylinders correspond one-to-one with the multiple sector-shaped bases, and the cylinders are mounted at the bottom ends of the sector-shaped bases. The scraper is mounted at the output end of one of the cylinders, the wiping plate is mounted at the output end of another cylinder, the water inlet passes through the top end of the connecting block, the nozzle is connected to the end of the water inlet near the heat exchanger, and the handle is mounted at the bottom end of the connecting block.

[0011] The beneficial effects of this utility model are as follows:

[0012] The liquid argon storage tank venting and argon gas reuse device includes a liquid argon storage tank, a pressure valve, a heat exchanger, a condensation assembly for condensing argon gas using liquid argon, a cleaning assembly for removing impurities generated during prolonged heat exchange, and a vaporizer. The liquid argon storage tank is placed vertically on the ground. The pressure valve is installed at the top of the liquid argon storage tank. The heat exchanger is placed vertically on the ground and located on one side of the liquid argon storage tank. The heat exchanger is divided into an upper liquid zone, a lower liquid zone, and a gas zone. The condensation assembly is installed inside the heat exchanger, and the cleaning assembly is installed... At the top of the condensation assembly, the vaporizer is placed vertically on the ground and located on one side of the condensation assembly. The liquid argon storage tank venting argon gas reuse device of this utility model ensures through the design of various structures that when the storage tank pressure is too high and argon gas is released, the discharged argon gas will be recovered, condensed, and then vaporized again by the vaporizer, thereby reducing energy waste. Furthermore, by using a cleaning component to clean the heat exchanger that has been working for a long time, the service life of the heat exchanger is greatly improved, while also avoiding the problem of impurities remaining on the inner wall of the heat exchanger affecting the heat exchange effect. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a first-view structural schematic diagram of a liquid argon storage tank venting and argon gas recycling device provided by this utility model;

[0015] Figure 2 This is a second-view structural schematic diagram of a liquid argon storage tank venting and argon gas recycling device provided by this utility model;

[0016] Figure 3 This is a schematic diagram of the heat exchange section of a liquid argon storage tank venting and argon gas recycling device provided by this utility model;

[0017] Figure 4 This is a schematic diagram of the cleaning section of a liquid argon storage tank venting and argon gas reuse device provided by this utility model;

[0018] Explanation of reference numerals in the attached drawings: 1. Liquid argon storage tank; 2. Pressure valve; 3. Heat exchanger; 4. Condensation assembly; 41. First pipe; 42. Hydraulic pump; 43. Second pipe; 44. Third pipe; 45. Fourth pipe; 46. Fifth pipe; 47. Heat exchange section; 471. Insulation plate; 472. Guide plate; 473. Heat exchange tube; 474. Mounting plate; 5. Cleaning assembly; 51. Support frame; 52. Circular chute; 53. Rotating slider; 54. Cleaning section; 541. Connecting block; 542. Sector-shaped base; 543. Cylinder; 544. Scraper; 545. Wiping plate; 546. Water inlet; 547. Nozzle; 548. Handle; 6. Vaporizer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Please see Figures 1 to 4 The present invention provides a liquid argon storage tank venting and argon gas recycling device, comprising a liquid argon storage tank 1, a pressure valve 2, a heat exchanger 3, a condensation assembly 4, a cleaning assembly 5, and a vaporizer 6.

[0022] The liquid argon storage tank 1 is placed vertically on the ground. The pressure valve 2 is installed at the top of the liquid argon storage tank 1. The heat exchanger 3 is placed vertically on the ground and is located on one side of the liquid argon storage tank 1. The heat exchanger 3 is divided into an upper liquid zone, a lower liquid zone, and a gas zone. The condensation assembly 4 is installed inside the heat exchanger 3. The cleaning assembly 5 is installed at the top of the condensation assembly 4. The vaporizer 6 is placed vertically on the ground and is located on one side of the condensation assembly 4.

[0023] Liquid argon is stored inside the liquid argon storage tank 1. A portion of the liquid argon will evaporate into argon gas in the liquid argon storage tank 1. When the argon gas accumulates at the top of the liquid argon storage tank 1 and exceeds the threshold, the pressure valve 2 opens, allowing the argon gas to flow into the heat exchanger 3. The other portion of liquid argon will flow into the heat exchanger 3 through the condensation component 4.

[0024] At the same time, when argon gas and liquid argon enter the heat exchanger 3, the argon gas is condensed by the low temperature of the liquid argon through the condensation component 4, so that the argon gas is re-condensed into liquid argon. Then, the re-condensed liquid argon and the original liquid argon are merged into the vaporizer 6 through the condensation component 4 for vaporization, thereby achieving the purpose of argon gas recovery and utilization by utilizing the temperature of liquid argon itself.

[0025] Furthermore, when heat exchanger 3 is in operation for a long time, the inner wall of the gas zone of heat exchanger 3 is in long-term contact with liquid argon condensed from argon gas. Even if argon gas and liquid argon are relatively pure, they may still contain a very small amount of solid impurities, grease or other contaminants in an industrial environment. Over time, these impurities may gradually deposit in the tube side and adhere to the tube wall, affecting the heat exchange efficiency. At this time, by using cleaning component 5, chemical agents are first sprayed onto the inner wall of heat exchanger 3 and then wiped, which greatly improves the service life of the heat exchanger and avoids the problem of impurities remaining on the inner wall of the heat exchanger affecting the heat exchange effect.

[0026] In this embodiment, one end of the first pipe 41 is connected to the bottom end of the liquid argon storage tank 1, the hydraulic pump 42 is installed at the other end of the first pipe 41, one end of the second pipe 43 is installed at the top end of the hydraulic pump 42, and the other end of the second pipe 43 is connected to the upper liquid zone of the heat exchanger 3, one end of the third pipe 44 is connected to the liquid argon storage tank 1, and the other end of the third pipe 44 is connected to the gas zone of the heat exchanger 3, one end of the fourth pipe 45 is connected to the lower liquid zone of the heat exchanger 3, and the other end of the fourth pipe 45 is connected to the vaporizer 6, one end of the fifth pipe 46 is connected to the gas zone of the heat exchanger 3, and the other end of the fifth pipe 46 is connected to the liquid argon storage tank 1, and the heat exchange section 47 is installed inside the heat exchanger 3.

[0027] In this process, liquid argon in liquid argon storage tank 1 flows into hydraulic pump 42 through first pipe 41. Hydraulic pump 42 sends liquid argon into upper liquid zone of heat exchanger 3 through second pipe 43. Argon gas at the top of liquid argon storage tank 1 is sent into gas zone of heat exchanger 3 through third pipe 44. At this time, liquid argon in upper liquid zone flows to lower liquid zone through heat exchange section 47. During the flow, it comes into contact with argon gas in gas zone. The low temperature of liquid argon causes argon gas to condense into liquid argon, which flows back to liquid argon storage tank 1 through fifth pipe 46. Liquid argon flowing to lower liquid zone flows into vaporizer 6 through fourth pipe 45 for vaporization and canning, thereby recovering the discharged argon gas by condensing argon gas itself, reducing energy waste.

[0028] In this embodiment, multiple insulating plates 471 are respectively installed inside the heat exchanger 3, and the multiple insulating plates 471 are respectively located at the junction of the upper and lower liquid zones and the gas zone of the heat exchanger 3. Multiple guide plates 472 are installed inside the heat exchanger 3, and the multiple guide plates 472 are located between the multiple insulating plates 471. Multiple heat exchange tubes 473 pass through the multiple insulating plates 471, and the two ends of the multiple heat exchange tubes 473 are respectively connected to the upper and lower liquid zones of the heat exchanger 3. Multiple mounting plates 474 are respectively installed on the multiple guide plates 472.

[0029] Among them, the isolation plate 471 serves to isolate argon gas from liquid argon, and the upper and lower liquid zones and gas zones in the heat exchanger 3 are separated by multiple isolation plates 471.

[0030] Meanwhile, the multiple guide plates 472 are semi-circular and will not completely block the gas area. When the argon gas condenses into liquid argon, the liquid argon gradually flows down through the guide plates 472 into the interior of the fifth pipe 46 and then flows back into the liquid argon storage tank 1, thereby realizing the recovery and reuse of argon gas.

[0031] Furthermore, the multiple heat exchange tubes 473 are mainly responsible for carrying the liquid argon from the upper liquid zone into the lower liquid zone. When the liquid argon flows in the heat exchange tubes 473, the argon gas will absorb the temperature of the liquid argon, thereby causing the argon gas to condense into liquid argon.

[0032] Furthermore, the mounting plate 474 facilitates installation and disassembly. When the upper liquid zone opening of the heat exchanger 3 is opened, the heat exchange part 47 can be pulled with a tool. The inner wall of the heat exchanger 3 is provided with a groove that matches the mounting plate 474. During installation and disassembly, the mounting plate 474 slides through the groove, greatly reducing the workload.

[0033] In this embodiment, the support frame 51 is installed on the outer wall of the heat exchanger 3, the circular slide groove 52 is installed at the bottom end of the support frame 51, the rotating slider 53 is slidably disposed on the circular slide groove 52, and the cleaning part 54 is installed on the rotating slider 53.

[0034] Among them, support frame 51 serves as a connection and support;

[0035] Meanwhile, the circular slide 52 is annular, and the inner wall is provided with a groove for the rotating slider 53 to move. The circular slide 52 is provided with an opening for the rotating slider 53 to rotate.

[0036] Furthermore, a cleaning part 54 is installed on the rotating slider 53. When the cleaning part 54 needs to be worked, first open the upper liquid area of ​​the heat exchanger 3, then remove the heat exchange part 47, move the rotating slider 53 to the opening of the circular groove 52, and rotate the slider 53 to rotate the cleaning part 54 into the heat exchanger 3, thereby achieving the purpose of cleaning the inside of the heat exchanger 3.

[0037] In this embodiment, the connecting block 541 is mounted on the rotating slider 53, a plurality of sector-shaped bases 542 are mounted at both ends of the connecting block 541, a plurality of cylinders 543 correspond one-to-one with a plurality of sector-shaped bases 542, and the cylinders 543 are mounted at the bottom end of the sector-shaped bases 542, the scraper 544 is mounted at the output end of the cylinders 543, the wiping plate 545 is mounted at the output end of another cylinder 543, the water inlet 546 passes through the top end of the connecting block 541, the nozzle 547 is connected to the end of the water inlet 546 near the heat exchanger 3, and the handle 548 is mounted at the bottom end of the connecting block 541.

[0038] When the cleaning unit 54 rotates into the heat exchanger 3, the chemical agent flows into the water inlet 546. The spray nozzle 547 is controlled by the remote control to spray the chemical agent onto the inner wall of the heat exchanger 3. At this time, the remote control drives the cylinder 543 to push the scraper 544 and the wiping plate 545 to move up or down. The pushing distance of the cylinder 543 is adjusted according to the area to be cleaned. Finally, the handle 548 is pulled manually to move the cleaning unit 54 on the circular slide 52, which can more effectively clean various areas of the inner wall of the heat exchanger 3.

[0039] At the same time, when pulling the handle 548, attention should be paid to the pulling direction. After the nozzle 547 sprays the chemical agent, the pulling direction should be determined so that the wiping plate 545 is in front and the scraper 544 is behind, so as to scrape off the chemical agent foam residue on the surface after wiping.

[0040] In summary, the liquid argon storage tank venting and argon gas recycling device of this utility model ensures through the design of various structures that when argon gas is released due to excessive pressure in the storage tank, the discharged argon gas will be recovered, condensed, and then vaporized again by the vaporizer 3, thereby reducing energy waste. Furthermore, by using the cleaning component 5 to clean the heat exchanger that has been working for a long time, the service life of the heat exchanger 3 is greatly improved, while also avoiding the problem of impurities remaining on the inner wall of the heat exchanger 3 affecting the heat exchange effect.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for reusing argon gas from a liquid argon storage tank, characterized in that, include A liquid argon storage tank, which is placed vertically on the ground; A pressure valve is installed at the top of the liquid argon storage tank; A heat exchanger is placed vertically on the ground and is located on one side of the liquid argon storage tank. The heat exchanger is divided into an upper liquid zone, a lower liquid zone, and a gas zone. A condenser assembly for condensing argon gas using liquid argon, the condenser assembly being installed inside the heat exchanger; A cleaning assembly for removing impurities generated during prolonged heat exchange, the cleaning assembly being installed at the top of the condensation assembly; A vaporizer is placed vertically on the ground and is located on one side of the condenser assembly.

2. The device for reusing argon gas from a liquid argon storage tank according to claim 1, characterized in that, The condensation assembly includes a first pipe, a hydraulic pump, a second pipe, a third pipe, a fourth pipe, a fifth pipe, and a heat exchange section for heat exchange. One end of the first pipe is connected to the bottom of the liquid argon storage tank, and the hydraulic pump is installed at the other end of the first pipe. One end of the second pipe is installed at the top of the hydraulic pump, and the other end of the second pipe is connected to the upper liquid zone of the heat exchanger. One end of the third pipe is connected to the liquid argon storage tank, and the other end of the third pipe is connected to the gas zone of the heat exchanger. One end of the fourth pipe is connected to the lower liquid zone of the heat exchanger, and the other end of the fourth pipe is connected to the vaporizer. One end of the fifth pipe is connected to the gas zone of the heat exchanger, and the other end of the fifth pipe is connected to the liquid argon storage tank. The heat exchange section is installed inside the heat exchanger.

3. The device for reusing argon gas from a liquid argon storage tank according to claim 2, characterized in that, The heat exchange section includes multiple insulating plates, multiple guide plates, multiple heat exchange tubes, and multiple mounting plates. The multiple insulating plates are respectively installed inside the heat exchanger and are located at the junction of the upper and lower liquid zones and the gas zone of the heat exchanger. The multiple guide plates are installed inside the heat exchanger and are located between the multiple insulating plates. The multiple heat exchange tubes pass through the multiple insulating plates and are connected at both ends to the upper and lower liquid zones of the heat exchanger. The multiple mounting plates are respectively installed on the multiple guide plates.

4. The device for reusing argon gas from a liquid argon storage tank according to claim 1, characterized in that, The cleaning assembly includes a support frame, a circular slide groove, a rotating slider, and a cleaning part for performing the cleaning function. The support frame is installed on the outer wall of the heat exchanger, the circular slide groove is installed at the bottom end of the support frame, the rotating slider is slidably disposed on the circular slide groove, and the cleaning part is installed on the rotating slider.

5. The device for reusing argon gas from a liquid argon storage tank according to claim 4, characterized in that, The cleaning unit includes a connecting block, multiple sector-shaped bases, multiple cylinders, a scraper, a wiping plate, a water inlet, a nozzle, and a handle. The connecting block is mounted on the rotating slider. The multiple sector-shaped bases are mounted at both ends of the connecting block. The multiple cylinders correspond one-to-one with the multiple sector-shaped bases, and the cylinders are mounted at the bottom ends of the sector-shaped bases. The scraper is mounted at the output end of one of the cylinders, and the wiping plate is mounted at the output end of another cylinder. The water inlet passes through the top end of the connecting block, and the nozzle is connected to the end of the water inlet near the heat exchanger. The handle is mounted at the bottom end of the connecting block.

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