Gas recovery apparatus

Abstract

This invention discloses a gas recovery device, comprising: a pressure chamber for processing operations, wherein a gas supply pipeline is provided at the lower part of the pressure chamber and connected to a primary gas pressure source, the primary gas pressure source supplying the gas required by the pressure chamber via a second booster cylinder; the main features are: a first gas recovery pipe extending outward from the upper part of the pressure chamber and connected to the first booster cylinder, the first gas recovery pipe being equipped with a first gas detector and a first valve body; and a second gas recovery pipe having its two ends connected to the first booster cylinder and the bottom of a buffer tank, respectively. By performing gas recovery and concentration control, and then using a third gas supply pipe and a third booster cylinder at the top of the buffer tank in conjunction with the second valve body and the second gas detector, the supply and concentration of the recovered gas are controlled, thereby improving the economic efficiency of gas recovery through a simplified structure.

Description

Technical Field

[0001] This invention relates to the field of gas recovery technology, and in particular to a gas recovery device that recovers a gas that is much lighter than air. The recovery pipe is located above the pressure chamber and connects to the bottom of the buffer tank via a booster cylinder. A valve and a gas detector are provided in between to control the gas recovery and gas concentration. Through a simplified structure and a streamlined gas recovery process, the economic benefits of gas recovery and reuse are improved. Background Technology

[0002] Helium is a very rare gas, and obtaining it from the air is currently extremely difficult and costly. Helium is non-renewable and is the most widely used inert gas globally, making it highly valuable for recycling. A known example is Chinese Patent Application No. 201410723131.2, "A Helium Recovery System," please refer to [link / reference]. Figure 3 As shown, the content is roughly a helium recovery system, characterized by: a recovery port a1 connected by a pipeline, a P1 pressure sensor a2 installed at the recovery port a1, the pipeline connected to the recovery port a1 splitting into two branches, one branch connecting to a high-pressure recovery valve a3 and then to the inlet of a low-pressure tank a8, the other branch connecting sequentially to a low-pressure recovery valve a5, a buffer tank a4, and then to the inlet of a vacuum pump a6, the outlet of the vacuum pump a6 connected to another inlet of the low-pressure tank a8 via a pipeline, and an isolation valve a7 connected to the pipeline between the vacuum pump a6 and the low-pressure tank a8, a P2 pressure sensor a9 installed on the low-pressure tank a8, the outlet of the low-pressure tank a8 connected to the inlet of a compressor a11 via a pipeline, and an isolation valve a10 also connected to the pipeline between the low-pressure tank a8 and the compressor a11, the outlet of the compressor a11 connected to a high-pressure tank a12 via a pipeline.

[0003] As can be seen from the above, the known previous case utilizes pressure difference to recover helium through two branches, high pressure and low pressure. Therefore, it requires the design of low pressure recovery valve a5 and high pressure recovery valve a3. Furthermore, its low pressure recovery branch also requires equipment such as buffer tank a4, vacuum pump a6 and low pressure tank a8. In addition, the configuration of several pressure sensors a2 and a9, as well as the installation of several isolation valves a7 and a10, compressor a11 and its high pressure tank a12, further increase the complexity of the system and cannot meet the economic benefits of gas recovery and reuse. It is indeed necessary to improve it.

[0004] Therefore, in response to the problems existing in the above-mentioned known structures, how to develop a more ideal and practical innovative structure is what consumers eagerly expect, and it is also the goal and direction that relevant businesses must strive to achieve in their research and development.

[0005] In view of this, based on the inventor's many years of experience in manufacturing, developing and designing related products, and after detailed design and careful evaluation of the above objectives, the inventor finally obtained a practical invention. Summary of the Invention

[0006] The main objective of this invention is to provide a gas recovery device in which the recovered gas is a gas much lighter than air. When the device is shut down, the gas to be recovered in the pressure chamber will float to the top. The recovery pipe is located above the pressure chamber, connecting through the booster cylinder to the bottom of the buffer tank. A valve and a gas detector are provided in between to control the gas recovery and gas concentration. Through the simplified structure and simplified gas recovery process, the economic benefits of gas recovery and reuse are improved.

[0007] To achieve the above objectives, the present invention provides a gas recovery device, comprising: a pressure chamber; and a recovery module, the recovery module including a first gas recovery pipe, one end of which extends through and connects to the upper part of the pressure chamber, and the other end of which connects to one end of a first booster cylinder. The first gas recovery pipe is equipped with a first gas detector and a first valve body; the other end of the first booster cylinder connects to one end of a second gas recovery pipe, and the other end of the second gas recovery pipe connects to a buffer tank. The first booster cylinder delivers gas from the upper part of the pressure chamber into the buffer tank, and the first gas detector detects the gas concentration. When the gas concentration reaches a set value, the first valve body is closed to ensure the recovered gas concentration.

[0008] In one embodiment of the gas recovery device of the present invention, the gas recovery device further includes a primary pressure source module, the primary pressure source module including a primary pressure source, a first gas supply pipe, a second booster cylinder and a second gas supply pipe, one end of the first gas supply pipe being connected to the primary pressure source, the other end of the first gas supply pipe being connected to one end of the second booster cylinder, the other end of the second booster cylinder being connected to one end of the second gas supply pipe, and the other end of the second gas supply pipe being connected to the interior of the pressure chamber, through which gas from the primary pressure source is sent into the interior of the pressure chamber.

[0009] In a further embodiment of the gas recovery device of the present invention, the gas recovery device further includes a reuse module, which includes a third gas supply pipe, a second valve body and a fourth gas supply pipe. The buffer tank is connected to one end of the third gas supply pipe. The other end of the third gas supply pipe is connected to one end of the fourth gas supply pipe through the second valve body. The connection between the third gas supply pipe and the fourth gas supply pipe is controlled by opening and closing the second valve body. The other end of the fourth gas supply pipe is connected to the second gas supply pipe or directly connected to the inside of the pressure chamber. By opening the second valve body, the recovered gas stored in the buffer tank and the gas from the original gas pressure source are combined and then sent into the inside of the pressure chamber through the second gas supply pipe, or the recovered gas in the buffer tank is directly sent into the inside of the pressure chamber.

[0010] In one embodiment of the gas recovery device of the present invention, the pressure chamber further includes a heating module, a pressure sensor and a temperature sensor disposed therein, and the pressure chamber is connected to a motor, a pressurization control component and a gas detector inside the chamber.

[0011] In one embodiment of the gas recovery device of the present invention, the recovered gas is helium or deuterium.

[0012] In one embodiment of the gas recovery device of the present invention, the permissible pressure range of the pressure chamber is from 1 atmosphere to less than or equal to 150 kg / cm². 2 The allowable pressure range of this buffer tank is from 1 atmosphere to less than or equal to 750 kg / cm². 2 Furthermore, the allowable pressure of the buffer tank is greater than the allowable pressure of the pressure chamber.

[0013] In a further embodiment of the gas recovery device of the present invention, a third booster cylinder may be provided on the fourth gas supply pipe to enhance the conveying power of the recovered gas in the fourth gas supply pipe.

[0014] In a further embodiment of the gas recovery device of the present invention, a second gas detector is provided on the fourth gas supply pipe to detect the concentration of the recovered gas and close the second valve when the concentration of the recovered gas reaches a set value.

[0015] In one embodiment of the gas recovery device of the present invention, the buffer tank is connected to a gas discharge pipe, and a third valve body and a third gas detector are provided on the gas discharge pipe. The third gas detector detects the gas concentration in the buffer tank, and closes the third valve body to stop gas discharge when the gas concentration reaches a set value.

[0016] In a further embodiment of the gas recovery device of the present invention, a first check valve may be provided on the second gas supply pipe to prevent the recovered gas in the fourth gas supply pipe from flowing back to the original gas pressure source when the gas in the second gas supply pipe merges with the gas in the fourth gas supply pipe.

[0017] In a further embodiment of the gas recovery device of the present invention, a second check valve is provided on the second gas supply pipe near the pressure chamber to prevent gas in the pressure chamber from flowing back into the second gas supply pipe.

[0018] In a further embodiment of the gas recovery device of the present invention, a second check valve and a third check valve are respectively provided on the second gas supply pipe and the fourth gas supply pipe near the pressure chamber, so as to prevent the gas in the pressure chamber from flowing back into the second gas supply pipe and the fourth gas supply pipe.

[0019] The beneficial effects of the gas recovery equipment provided by this invention are as follows:

[0020] The gas recovery equipment includes: a pressure chamber for processing operations, with a gas supply pipeline located at the bottom of the pressure chamber and connected to a primary gas pressure source. The primary gas pressure source supplies the gas required by the pressure chamber via a second booster cylinder. The main features are: a first gas recovery pipe extending outward from the top of the pressure chamber, connected to the first booster cylinder; a first gas detector and a first valve body installed on the first gas recovery pipe; and a second gas recovery pipe whose two ends are respectively connected to the first booster cylinder and the bottom of a buffer tank. Through gas recovery and concentration control, a third gas supply pipe and a third booster cylinder, in conjunction with the second valve body and the second gas detector, at the top of the buffer tank, control the supply and concentration of the recovered gas, thereby achieving improved economic efficiency in gas recovery through a streamlined structure.

[0021] Regarding the techniques, methods, and effects employed in this invention, several preferred embodiments are listed below and described in detail with reference to the accompanying drawings. It is believed that the above-mentioned objectives, structures, and features of this invention can be gained in a deep and specific manner from this description. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structural configuration of a gas recovery device according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structural configuration of a gas recovery device according to another embodiment of the present invention.

[0024] Figure 3 This is a known structural diagram of Chinese patent application systems.

[0025] Reference numerals: a1-Recovery port; a2-Pressure sensor; a3-High-pressure recovery valve; a4-Buffer tank; a5-Low-pressure recovery valve; a6-Vacuum pump; a7-Isolation valve; a8-Low-pressure tank; a9-Pressure sensor; a10-Isolation valve; a11-Compressor; a12-High-pressure tank; 1-Gas recovery equipment; 10-Pressure chamber; 11-Heating module; 12-Pressure sensor; 13-Temperature sensor; 14-Motor; 15-Pressure control assembly; 16-Gas detector inside the chamber; 20-Recovery module; 21-First gas recovery pipe; 22-First booster cylinder; 23-First gas... Detector; 24-First valve body; 25-Second gas recovery pipe; 26-Buffer tank; 261-Bottom; 262-Top; 28-Gas discharge pipe; 30-Original gas pressure source module; 31-Original gas pressure source; 32-First gas supply pipe; 33-Second booster cylinder; 34-Second gas supply pipe; 40-Reuse module; 41-Third gas supply pipe; 42-Third booster cylinder; 43-Second valve body; 44-Second gas detector; 45-Fourth gas supply pipe; 46-Third valve body; 47-First check valve; 48-Second check valve; 48a-Third check valve; 49-Third gas detector. Detailed Implementation

[0026] This invention provides a design for a gas recovery device.

[0027] To enable a better understanding and appreciation of the objectives, features, and effects of this invention, the following detailed description is provided in conjunction with the embodiments and accompanying drawings:

[0028] See Figure 1 and Figure 2 As shown, the present invention provides a gas recovery device 1, comprising:

[0029] A pressure chamber 10, which is one type of processing area; and

[0030] A gas recovery module 20 includes a first gas recovery pipe 21, one end of which extends through and connects to the upper part of the pressure chamber 10, and the other end of which connects to one end of a first booster cylinder 22. The first gas recovery pipe 21 is equipped with a first gas detector 23 and a first valve body 24. The other end of the first booster cylinder 22 connects to one end of a second gas recovery pipe 25, and the other end of the second gas recovery pipe 25 connects to a bottom 261 below a buffer tank 26. When the pressure chamber 10 is stopped, the gas above the pressure chamber 10 is fed into the buffer tank 26 through the second gas recovery pipe 25 via the bottom 261 below the buffer tank 26 by the first booster cylinder 22. The gas concentration is detected by the first gas detector 23, and the first valve body 24 is closed when the gas concentration reaches a set value to ensure the concentration of recovered gas.

[0031] The gas recovery device 1 further includes a primary pressure source module 30, which includes a primary pressure source 31, a first gas supply pipe 32, a second booster cylinder 33, and a second gas supply pipe 34. One end of the first gas supply pipe 32 is connected to the primary pressure source 31, and the other end of the first gas supply pipe 32 is connected to one end of the second booster cylinder 33. The other end of the second booster cylinder 33 is connected to one end of the second gas supply pipe 34, and the other end of the second gas supply pipe 34 is connected to the lower part of the pressure chamber 10. When the pressure chamber 10 is in operation, the gas from the primary pressure source 31 is sent into the lower part of the pressure chamber 10 through the second gas supply pipe 34 via the second booster cylinder 33.

[0032] The gas recovery device 1 further includes a reuse module 40, which comprises a third gas supply pipe 41, a second valve body 43, a second gas detector 44, and a fourth gas supply pipe 45. A top 262 above the buffer tank 26 connects to one end of the third gas supply pipe 41. The other end of the third gas supply pipe 41 is connected to one end of the fourth gas supply pipe 45 via the second valve body 43. The second valve body 43 controls whether the third gas supply pipe 41 and the fourth gas supply pipe 45 are connected. The second gas detector 44 is installed on the fourth gas supply pipe 45 to detect the concentration of the recovered gas and closes the second valve body 43 when the recovered gas concentration reaches a set value. The other end of the fourth air supply pipe 45 is connected to the second air supply pipe 34 or directly connected to the lower part of the pressure chamber 10. When the pressure chamber 10 is in operation, the second valve body 43 is opened, and the recovered gas stored in the buffer tank 26 is fed into the pressure chamber 10 through the convergence of the gas from the original air pressure source 31 in the fourth air supply pipe 45 and the second air supply pipe 34, or the recovered gas in the buffer tank 26 is directly fed into the lower part of the pressure chamber 10 through the fourth air supply pipe 45. A third booster cylinder 42 may be provided on the fourth air supply pipe 45 to enhance the conveying power of the recovered gas in the fourth air supply pipe 45.

[0033] The gas recovery device 1 further includes a heating module 11, a pressure sensor 12, and a temperature sensor 13 disposed inside the pressure chamber 10. The pressure chamber 10 is connected to a motor 14, a pressurization control component 15, and a gas detector 16. The motor 14 drives a fan (not shown) inside the pressure chamber 10 to agitate the gas. The pressurization control component 15 controls the internal pressure of the pressure chamber 10. The gas detector 16 detects the gas concentration inside the pressure chamber 10. The heating module 11 provides the heat source required for the process. The pressure sensor 12 detects the internal pressure of the pressure chamber 10. The temperature sensor 13 detects the internal temperature of the pressure chamber 10.

[0034] The gas recovery device 1 includes a buffer tank 26 with a gas discharge pipe 28 connected to its bottom. The gas discharge pipe 28 is equipped with a third valve body 46 and a third gas detector 49. When gas is recovered, impure gas is discharged to the outside through the gas discharge pipe 28 by means of pressure difference. The gas concentration in the buffer tank 26 is detected by the third gas detector 49. When the gas concentration reaches a set value, the third valve body 46 is closed to stop gas discharge.

[0035] See Figure 1 As shown, the second gas supply pipe 34 is provided with a first check valve 47 to prevent the recovered gas in the fourth gas supply pipe 45 from flowing back to the original gas pressure source 31 when the second gas supply pipe 34 and the recovered gas in the fourth gas supply pipe 45 merge.

[0036] See Figure 1 As shown, a second check valve 48 is provided on the second air supply pipe 34 near the pressure chamber 10 to prevent gas in the pressure chamber 10 from flowing back into the second air supply pipe 34.

[0037] See Figure 2 As shown, a second check valve 48 and a third check valve 48a are respectively provided on the second air supply pipe 34 and the fourth air supply pipe 45 near the pressure chamber 10, so as to prevent the gas in the pressure chamber 10 from flowing back into the second air supply pipe 34 and the fourth air supply pipe 45.

[0038] The gas recovery device wherein the recovered gas is helium or deuterium, which is much lighter than air.

[0039] The gas recovery device, wherein the pressure chamber 10 has an allowable pressure range of 1 atmosphere to less than or equal to 150 kg / cm². 2 The allowable pressure range of the buffer tank 26 is from 1 atmosphere to less than or equal to 750 kg / cm². 2 Furthermore, the allowable pressure of the buffer tank 26 is greater than the allowable pressure of the pressure chamber 10.

[0040] As can be seen from the above, the gas recovery device of the present invention recovers a gas that is much lighter than air. The recovery pipe is located above the pressure chamber, connecting through the booster cylinder to the bottom of the buffer tank. A valve and a gas detector are provided in between to control the gas recovery and gas concentration. With the simplest structure, the efficiency of gas recovery and reuse is improved.

[0041] The foregoing description focuses on the preferred embodiments of the present invention and their technical features. Those skilled in the art should be able to make changes and modifications to the present invention without departing from its spirit and principles, and all such changes and modifications should be covered within the scope defined by the following claims.

Claims

1. A gas recovery device, characterized in that: include: A pressure chamber; A gas recovery module includes a first gas recovery pipe, one end of which extends through and connects to the upper part of a pressure chamber, and the other end of which connects to one end of a first booster cylinder. The first gas recovery pipe is equipped with a first gas detector and a first valve. The other end of the first booster cylinder connects to one end of a second gas recovery pipe, and the other end of the second gas recovery pipe connects to the bottom of a buffer tank. The first booster cylinder delivers gas from the upper part of the pressure chamber into the buffer tank via the bottom of the buffer tank. The first gas detector detects the gas concentration, and when the gas concentration reaches a set value, the first valve closes to ensure the recovered gas concentration. The reusable module includes a third air supply pipe, a second valve body, and a fourth air supply pipe. The buffer tank is connected to one end of the third air supply pipe. The other end of the third air supply pipe is connected to one end of the fourth air supply pipe via the second valve body. The connection between the third and fourth air supply pipes is controlled by opening and closing the second valve body. The other end of the fourth air supply pipe is connected to the inside of the pressure chamber. By opening the second valve body, the recovered gas stored inside the buffer tank is directly sent into the pressure chamber.

2. The gas recovery device as described in claim 1, characterized in that: The gas recovery device further includes a primary pressure source module, which includes a primary pressure source, a first gas supply pipe, a second booster cylinder, and a second gas supply pipe. One end of the first gas supply pipe is connected to the primary pressure source, and the other end of the first gas supply pipe is connected to one end of the second booster cylinder. The other end of the second booster cylinder is connected to one end of the second gas supply pipe, and the other end of the second gas supply pipe is connected to the inside of the pressure chamber. Gas from the primary pressure source is sent into the pressure chamber through the second booster cylinder.

3. The gas recovery device as described in claim 2, characterized in that: The other end of the fourth gas supply pipe is connected to the second gas supply pipe. By opening the second valve, the recovered gas stored inside the buffer tank and the gas from the original gas pressure source are combined and then sent into the pressure chamber through the second gas supply pipe.

4. The gas recovery device as described in claim 1, characterized in that: The pressure chamber further includes a heating module, a pressure sensor and a temperature sensor disposed therein, and the pressure chamber is connected to a motor, a pressurization control component and a gas detector inside the chamber.

5. The gas recovery device as described in claim 1, characterized in that: The recovered gas is either helium or deuterium.

6. The gas recovery device as described in claim 1, characterized in that: The pressure chamber has an allowable pressure range of 1 atmosphere to less than or equal to 150 kg / cm². 2 The allowable pressure range of this buffer tank is from 1 atmosphere to less than or equal to 750 kg / cm². 2 Furthermore, the allowable pressure of the buffer tank is greater than the allowable pressure of the pressure chamber.

7. The gas recovery device as described in claim 3, characterized in that: A third booster cylinder can be installed on the fourth gas supply pipe to enhance the conveying power of the recovered gas in the fourth gas supply pipe.

8. The gas recovery device as described in claim 3, characterized in that: The fourth gas supply pipe is equipped with a second gas detector, which can detect the concentration of the recovered gas and close the second valve when the concentration of the recovered gas reaches a set value.

9. The gas recovery device as described in claim 1, characterized in that: The buffer tank is connected to a gas discharge pipe, which is equipped with a third valve and a third gas detector. The third gas detector detects the gas concentration in the buffer tank, and closes the third valve to stop gas discharge when the gas concentration reaches a set value.

10. The gas recovery device as described in claim 3, characterized in that: The second gas supply pipe is equipped with a first check valve to prevent the recovered gas in the fourth gas supply pipe from flowing back to the original gas pressure source when the gas from the second gas supply pipe merges with the gas from the fourth gas supply pipe.

11. The gas recovery device as described in claim 3, characterized in that: A second check valve is provided on the second gas supply pipe near the pressure chamber to prevent gas in the pressure chamber from flowing back into the second gas supply pipe.

12. The gas recovery device as described in claim 3, characterized in that: The second and fourth air supply pipes are respectively provided with a second check valve and a third check valve near the pressure chamber to prevent gas in the pressure chamber from flowing back into the second and fourth air supply pipes.

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