CN-117588688-B - Gas recovery device

Abstract

The invention discloses a gas recovery device, comprising: the pressure cavity for processing operation has one air supply pipeline connected to one original air pressure source, one second pressurizing cylinder to supply the required air to the pressure cavity, one first air recovering pipe communicated to the first pressurizing cylinder, one first air detector and one first valve body in the first air recovering pipe, one second air recovering pipe with two ends connected to the first pressurizing cylinder and one buffering barrel bottom, and one third air supply pipe and one third pressurizing cylinder to cooperate with the second valve body and the second air detector to control the supply and concentration of recovered air.

Inventors

• Hong Zhahong

Assignees

• 印能科技股份有限公司

Dates

Publication Date

20260505

Application Date

20230505

Priority Date

20220811

Claims (12)

1. 1. A gas recovery apparatus is characterized by comprising: a pressure chamber; A recovery module including a first gas recovery tube with one end connected to the upper part of the pressure cavity, another end connected to one end of a first pressurizing cylinder with a first gas detector and a first valve, another end connected to one end of a second gas recovery tube with another end connected to a bottom of a buffer tank, a gas above the pressure cavity is fed into the buffer tank via the bottom of the buffer tank via the first pressurizing cylinder, the gas concentration is detected by the first gas detector, and the first valve is closed when the gas concentration reaches a set value to ensure the recovered gas concentration, and The reuse module comprises a third air supply pipe, a second valve body and a fourth air supply pipe, wherein one end of the third air supply pipe is communicated with the upper part of the buffer barrel, the other end of the third air supply pipe is combined with one end of the fourth air supply pipe through the second valve body, whether the third air supply pipe and the fourth air supply pipe are communicated or not is controlled by opening and closing the second valve body, the other end of the fourth air supply pipe is communicated to the inside of the pressure cavity, and the recovery gas stored in the buffer barrel is directly fed into the inside of the pressure cavity by opening the second valve body.
2. 2. The apparatus of claim 1, wherein the apparatus further comprises an original air pressure source module, the original air pressure source module comprises an original air pressure source, a first air supply pipe, a second pressurizing cylinder and a second air supply pipe, one end of the first air supply pipe is communicated with the original air pressure source, the other end of the first air supply pipe is communicated with one end of the second pressurizing cylinder, the other end of the second pressurizing cylinder is communicated with one end of the second air supply pipe, the other end of the second air supply pipe is communicated with the inside of the pressure cavity, and air from the original air pressure source is sent into the inside of the pressure cavity through the second pressurizing cylinder.
3. 3. The gas recycling apparatus according to claim 2, wherein the other end of the fourth gas supply pipe is connected to the second gas supply pipe, and the recycled gas stored in the buffer vessel is converged with the gas from the original gas pressure source by opening the second valve body, and is supplied into the pressure chamber through the second gas supply pipe.
4. 4. The apparatus of claim 1, wherein the pressure chamber further comprises a heating module, a pressure sensor and a temperature sensor disposed therein, the pressure chamber being bypassed to a motor, a pressurizing control assembly and an intra-chamber gas detector.
5. 5. The gas recovery apparatus according to claim 1, wherein the recovery gas is helium or deuterium.
6. 6. The gas recovery apparatus according to claim 1, wherein the allowable pressure of the pressure chamber is in a range of 1 atmosphere to 150kg/cm 2 or less, the allowable pressure of the buffer vessel is in a range of 1 atmosphere to 750kg/cm 2 or less, and the allowable pressure of the buffer vessel is greater than the allowable pressure of the pressure chamber.
7. 7. The gas recovery apparatus according to claim 3, wherein a third pressurizing cylinder is further provided on the fourth gas supply pipe, and the third pressurizing cylinder is used to enhance the power of the recovered gas in the fourth gas supply pipe.
8. 8. The gas recovery apparatus according to claim 3, wherein the fourth gas supply pipe is provided with a second gas detector for detecting the concentration of the recovered gas and closing the second valve body when the concentration of the recovered gas reaches a set value.
9. 9. The apparatus of claim 1, wherein the buffer tank is connected to a gas discharge pipe, a third valve 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 the third valve is closed when the gas concentration reaches a predetermined value, and the gas discharge is stopped.
10. 10. The gas recovery apparatus according to claim 3, wherein the second gas supply pipe is provided with a first check valve to prevent the recovered gas in the fourth gas supply pipe from reversely flowing to the original gas pressure source when the recovered gas and the second gas supply pipe are converged.
11. 11. The gas recovery apparatus according to claim 3, wherein a second check valve is provided on the second gas supply pipe near the pressure chamber to prevent the gas in the pressure chamber from flowing back into the second gas supply pipe.
12. 12. The gas recovery apparatus according to claim 3, wherein the second gas supply pipe and the fourth gas supply pipe are respectively provided with a second check valve and a third check valve near the pressure chamber to prevent the gas in the pressure chamber from flowing back into the second gas supply pipe and the fourth gas supply pipe.

Description

Gas recovery device Technical Field The invention relates to the technical field of gas recovery, in particular to a gas recovery device which is technically provided with a recovery pipe, wherein the recovered gas is far lighter than air, the recovery pipe is arranged above the pressure cavity, and is communicated with a pressurizing cylinder to the bottom of a buffer barrel, a valve body and a gas detector are arranged between the pressurizing cylinder and the buffer barrel to control the gas recovery and the gas concentration, and the economic benefit of gas recovery and reutilization is improved by virtue of a simplified structure and a simplified gas recovery process. Background Helium is a very rare gas, and it is very difficult to obtain helium from air at the present time, and the cost is quite high. Helium is not renewable and is the most widely used inert gas, and therefore has considerable recovery value. As shown in fig. 3, a helium recovery system is generally disclosed in the patent application No. 201410723131.2, which is characterized by comprising a recovery port a1 connected with a pipeline, a P1 pressure sensor a2 is installed at the recovery port a1, the pipeline connected with the recovery port a1 is divided into two branches, the pipeline connected with one branch is connected with a high-pressure recovery valve a3 and then is connected with an inlet of a low-pressure tank a8, the pipeline connected with the other branch is sequentially connected with a low-pressure recovery valve a5 and a buffer tank a4 and then is connected with an inlet of a vacuum pump a6, an outlet of the vacuum pump a6 is connected with the other inlet of the low-pressure tank a8 through a pipeline, an isolation valve a7 is connected with the pipeline between the vacuum pump a6 and the low-pressure tank a8, a P2 pressure sensor a9 is installed on the low-pressure tank a8, an outlet of the low-pressure tank a8 is connected with an inlet of a compressor a11 through a pipeline, and the pipeline between the low-pressure tank a8 and the compressor a11 is also connected with an inlet of the isolation valve a10 through a pipeline connected with the high-pressure tank a12. As can be seen from the above description, the known proposal uses the pressure difference to recover helium gas through two branches of high pressure and low pressure, so the design of the low pressure recovery valve a5 and the high pressure recovery valve a3 is required, and the low pressure recovery branch also needs the equipment such as the buffer tank a4, the vacuum pump a6 and the low pressure tank a8, and the arrangement of the pressure sensors a2 and a9, and the arrangement of the isolation valves a7 and a10, the compressor a11 and the high pressure tank a12 thereof, further increases the complexity of the system, cannot meet the economic benefit of gas recovery and reuse, and is really necessary for improvement. Therefore, in order to solve the above-mentioned problems of the prior art, it is desirable to develop an innovative structure with more ideal practicability, and the related industries should try to develop the breakthrough goal and direction. In view of this, the inventor has conducted the experience of related product manufacturing development and design for many years, and has finally obtained a practical invention after detailed design and careful evaluation with respect to the above-mentioned objects. Disclosure of Invention The invention mainly aims to provide gas recovery equipment, which is used for recovering gas which is far lighter than air, wherein the gas to be recovered in a pressure cavity floats above the pressure cavity when the equipment is stopped, a recovery pipe is arranged above the pressure cavity and communicated with a pressurizing cylinder to the bottom of a buffer barrel, and a valve body and a gas detector are arranged between the recovery pipe and the buffer barrel to control gas recovery and gas concentration. The invention provides gas recovery equipment which comprises a pressure cavity and a recovery module, wherein the recovery module comprises a first gas recovery pipe, one end of the first gas recovery pipe is communicated to the upper part inside the pressure cavity in a penetrating way, the other end of the first gas recovery pipe is communicated with one end of a first pressurizing cylinder, a first gas detector and a first valve body are arranged on the first gas recovery pipe, the other end of the first pressurizing cylinder is communicated with one end of a second gas recovery pipe, the other end of the second gas recovery pipe is communicated with a buffer barrel, the gas above the inside of the pressure cavity is sent into the buffer barrel through the first pressurizing cylinder, the gas concentration is detected through the first gas detector, and the first valve body is closed when the gas concentration reaches a set value, so that the recovered gas concentration is ensured. In one embod