阅读说明：本技术 一种高压循环利用系统 (High-pressure recycling system ) 是由 张佳 高书娟 宋财根 王佳雷 马黎波 贺吉白 江焱 王志斌 于 2021-03-17 设计创作，主要内容包括：本发明公开了一种高压循环利用系统,涉及气体循环技术领域,其技术方案要点包括依次连接的鼓风机、一级缓存罐、二级缓存罐、气体压缩机、热交换器、滤油滤水机构和三级缓存罐；所述鼓风机用于将低压循环气体导入一级缓存罐内；所述一级缓存罐和所述二级缓存罐之间设置有第一止回阀,以控制循环气体向所述二级缓存罐输送；所述三级缓存罐的出口端设置有用于控制循环气体向生产装置输送的第四止回阀以及用于导入新鲜气的第九球阀。本发明具有使得低压循环气体的压强在气体压缩机的控制下达到设定值,并在热交换器的作用下进行有效的温度控制,进而令滤油滤水机构将循环气体干燥与去油清洁,获得洁净度高的循环气体的效果。(The invention discloses a high-pressure recycling system, which relates to the technical field of gas circulation, and adopts the technical scheme that the system comprises a blower, a first-level cache tank, a second-level cache tank, a gas compressor, a heat exchanger, an oil filtering and water filtering mechanism and a third-level cache tank which are sequentially connected; the blower is used for guiding low-pressure circulating gas into the first-level cache tank; a first check valve is arranged between the first-level cache tank and the second-level cache tank to control the circulation gas to be conveyed to the second-level cache tank; and the outlet end of the third-level buffer tank is provided with a fourth check valve for controlling the conveying of the circulating gas to the production device and a ninth ball valve for introducing fresh gas. The invention has the advantages that the pressure of the low-pressure circulating gas reaches a set value under the control of the gas compressor, and the effective temperature control is carried out under the action of the heat exchanger, so that the oil filtering and water filtering mechanism dries and cleans the circulating gas to remove oil, thereby obtaining the effect of the circulating gas with high cleanliness.)

1. A high pressure cyclic utilization system which characterized in that: the system comprises a blower (1), a first-level cache tank (2), a second-level cache tank (8), a gas compressor (10), a heat exchanger (12), an oil filtering and water filtering mechanism and a third-level cache tank (20) which are connected in sequence; the blower (1) is used for guiding low-pressure circulating gas into the first-level cache tank (2); a first check valve (6) is arranged between the first-level cache tank (2) and the second-level cache tank (8) to control the circulation gas to be conveyed to the second-level cache tank (8); the outlet end of the third-level buffer tank (20) is provided with a fourth check valve (27) for controlling the delivery of the circulating gas to the production device and a ninth ball valve (26) for introducing fresh gas.

2. The high pressure recycling system of claim 1, wherein: the first-level cache tank (2) is provided with a first pressure gauge (3), a thermometer (4) and other gas content monitoring gauges (5); and the third-level cache tank (20) is provided with a second pressure gauge (25).

3. The high pressure recycling system of claim 1, wherein: a flowmeter (7) is arranged between the first check valve (6) and the second-level buffer tank (8), and a second check valve (9) is arranged between the second-level buffer tank (8) and the gas compressor (10).

4. A high pressure recycling system according to claim 3, characterized in that: the third-level cache tank (20) is connected with an electric regulating valve (22); the other end of the electric regulating valve (22) is connected with the outlet end of the second check valve (9); and a sixth ball valve (21) and a seventh ball valve (23) are respectively arranged at two ends of the electric regulating valve (22), and an eighth ball valve (24) is arranged between the inlet end of the sixth ball valve (21) and the outlet end of the seventh ball valve (23).

5. The high pressure recycling system of claim 1, wherein: the oil filtering and water filtering mechanism comprises a first-stage oil filtering and water filtering device (14) and a second-stage oil filtering and water filtering device (15) which are sequentially connected, wherein a third check valve (19) is arranged between the second-stage oil filtering and water filtering device (15) and the third-stage buffer tank.

6. The high pressure recycling system of claim 5, wherein: a second ball valve (13) is arranged between the heat exchanger (12) and the first-stage oil-filtering water filter (14), and a third ball valve (16) is arranged between the second-stage oil-filtering water filter (15) and the third check valve (19).

7. The high pressure recycling system of claim 6, wherein: still including fourth ball valve (17) and fifth ball valve (18) that connect gradually, the entry end of fourth ball valve (17) with heat exchanger (12) with connect between second ball valve (13), the exit end of fifth ball valve (18) with third ball valve (16) with connect between third check valve (19), just fourth ball valve (17) with between fifth ball valve (18) with connect between one-level oil strain water purifier (14) and the second grade oil strain water purifier (15).

8. The high pressure recycling system of claim 1, wherein: the gas compressor (10) is used for controlling the pressure of the circulating gas to be 0.1-10 Mpa.

9. The high pressure recycling system of claim 1, wherein: the heat exchanger (12) and the oil filtering and water filtering mechanism are used for controlling the temperature of the circulating gas to be less than or equal to 60 ℃ and controlling the oil content in the circulating gas to be less than or equal to 0.01%.

10. The high pressure recycling system of claim 1, wherein: the heat exchanger (12) is made of stainless steel, a cooling medium of the heat exchanger (12) is liquid or gas, and the oil filtering and water filtering mechanism is used for filtering oil and water.

Technical Field

The invention relates to the technical field of gas circulation, in particular to a high-pressure recycling system.

Background

Noble gases, also known as noble gases, are composed of group 0 elements of the periodic table of elements, including helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn, radioactive), gas oxygen (Og, radioactive, artificial elements). They are colorless, odorless, tasteless, and slightly water-soluble at normal temperature and pressure. The molecules of noble gases are composed of single atoms, and only weak van der waals forces exist between the atoms, and the rare gases can be liquefied at low temperatures.

Of these, neon, argon, krypton and xenon are available from air, gas liquefaction and fractionation methods, while helium is typically extracted from natural gas. The rare gas has wide application, but the rare gas is deficient in resources and difficult to extract, and certain potential safety hazards can be caused to organisms. In particular, helium is an indispensable rare gas for national defense, military industry and high-tech industry, and thus, the existing helium resource is very valued in all countries. Helium is present in the earth in very small quantities and can currently only be extracted from natural gas containing helium. Helium resources in China are extremely deficient and low in content, and the cost for exploiting helium by adopting a cryogenic method is too high. Therefore, helium used in China still mostly depends on imports.

With the development of industrial production and scientific technology, noble gases are increasingly used in industry, medicine, advanced science and technology and even daily life. Because noble gases are inert in nature and are often used as shielding gases, weld metals are often used to exclude air. The rare gas is mainly applied to illumination equipment, space exploration and the like in the industrial aspect. When the power is on, the rare gas can emit light with different colors, and can be made into various light sources, such as laser technology, floodlights, strong lights and the like. Helium is also used in deep sea diving to avoid the symptoms of oxygen poisoning and nitrogen anesthesia. On the other hand, because hydrogen is very unstable and easy to burn and explode, helium is adopted to replace hydrogen in the existing airship and balloon. Noble gases are also widely used in metallurgical processes and semiconductor industry, and in the preparation of various metal and non-metal powders, a large amount of gas is needed to cool the high-temperature powder to reduce the temperature below 100 ℃ before the powder can be collected and packaged. In order to ensure the purity of the powder surface, air or nitrogen cannot be used, and argon, helium, or the like must be used as a cooling medium. Because the gas consumption in the process is very large, general enterprises can directly discharge the gas, and the direct discharge can cause the production cost to be greatly increased, and is not beneficial to large-scale use, so the gas must be recycled.

During gas circulation, different processes of a production system have different requirements on gas pressure, particularly a high-pressure part is involved, the requirement on circulating gas is high, for example, a higher requirement on pressure stability is provided, a set of strict and efficient system is required to ensure that low-pressure gas is recycled in a high-pressure process, and a system capable of realizing high-pressure gas circulation is not available at present and needs to be improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high-pressure recycling system which has the effect of improving the high-pressure recycling safety of gas and solves the problem that the production cost is greatly increased due to direct emission of the gas.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-pressure recycling system comprises a blower, a first-level cache tank, a second-level cache tank, a gas compressor, a heat exchanger, an oil filtering and water filtering mechanism and a third-level cache tank which are connected in sequence; the blower is used for guiding low-pressure circulating gas into the first-level cache tank; a first check valve is arranged between the first-level cache tank and the second-level cache tank to control the circulation gas to be conveyed to the second-level cache tank; and the outlet end of the third-level buffer tank is provided with a fourth check valve for controlling the conveying of the circulating gas to the production device and a ninth ball valve for introducing fresh gas.

By adopting the technical scheme, the low-pressure circulating gas enters the first-level buffer tank for buffer storage through the air blower, then enters the second-level buffer tank, the gas compressor, the heat exchanger and the oil filtering and water filtering mechanism in sequence, so that the pressure of the low-pressure circulating gas reaches a set value under the control of the gas compressor, effective temperature control is performed under the action of the heat exchanger, and then the oil filtering and water filtering mechanism dries and degreases the circulating gas for cleanness, and the circulating gas with high cleanliness is obtained.

The invention is further configured to: the first-level cache tank is provided with a first pressure gauge, a thermometer and other gas content monitoring gauges; and the third-level cache tank is provided with a second pressure gauge.

Through adopting above-mentioned technical scheme, first manometer is used for monitoring one-level buffer tank internal pressure, and the thermometer is used for monitoring one-level buffer tank internal temperature, and other gas content monitoring table are used for monitoring other gas content in one-level buffer tank, realize the purpose of effective control and monitoring one-level buffer tank.

The invention is further configured to: the first check valve with be provided with the flowmeter between the second grade buffer memory jar, the second grade buffer memory jar with be provided with the second check valve between the gas compressor.

Through adopting above-mentioned technical scheme, the flowmeter is used for detecting the gaseous flow of circulation that first-level buffer memory jar carried to second grade buffer memory jar, and the second check valve plays the effect of the stability of effectual control second grade buffer memory jar internal circulation gas to gas compressor transport.

The invention is further configured to: the third-level cache tank is connected with an electric regulating valve; the other end of the electric regulating valve is connected with the outlet end of the second check valve; and a sixth ball valve and a seventh ball valve are respectively arranged at two ends of the electric regulating valve, and an eighth ball valve is arranged between the inlet end of the sixth ball valve and the outlet end of the seventh ball valve.

Through adopting above-mentioned technical scheme, electric control valve and corresponding sixth ball valve, seventh ball valve and eighth ball valve play the effect of this system's circulating gas flow stability of effectual control to when emergency such as breaking down, effectively shorten accident handling time.

The invention is further configured to: the oil filtering and water filtering mechanism comprises a first-stage oil filtering and water filtering device and a second-stage oil filtering and water filtering device which are sequentially connected, and a third check valve is arranged between the second-stage oil filtering and water filtering device and the third-stage buffer tank.

By adopting the technical scheme, the primary oil-filtering water filter and the secondary oil-filtering water filter are mutually cooperated, so that the purposes of remarkably improving the drying and oil-removing cleaning effects of the circulating gas are achieved; meanwhile, the third check valve plays a role in effectively controlling the stability of conveying the circulating gas in the second-stage oil filtering water filter to the third-stage buffer tank.

The invention is further configured to: a second ball valve is arranged between the heat exchanger and the first-stage oil-filtering water filter, and a third ball valve is arranged between the second-stage oil-filtering water filter and the third check valve.

Through adopting above-mentioned technical scheme, second ball valve and third ball valve play the effect of this system's of effectual control circulation gas flow stability to when emergency such as break down, effectively shorten accident handling time.

The invention is further configured to: still including the fourth ball valve and the fifth ball valve that connect gradually, the entry end of fourth ball valve with heat exchanger with connect between the second ball valve, the exit end of fifth ball valve with the third ball valve with connect between the third check valve, just the fourth ball valve with between the fifth ball valve with connect between one-level oil strain water purifier and the second grade oil strain water purifier.

Through adopting above-mentioned technical scheme, fourth ball valve and fifth ball valve play the effect of this system's of effectual control circulation gas flow stability to when emergency such as breaking down, effectively shorten accident handling time.

The invention is further configured to: the gas compressor is used for controlling the pressure of the circulating gas to be 0.1-10 Mpa.

The invention is further configured to: the heat exchanger and the oil filtering and water filtering mechanism are used for controlling the temperature of the circulating gas to be less than or equal to 60 ℃ and controlling the oil content in the circulating gas to be less than or equal to 0.01%.

The invention is further configured to: the heat exchanger is made of stainless steel, a cooling medium of the heat exchanger is liquid or gas, and the oil filtering and water filtering mechanism is used for filtering oil and water.

In conclusion, the invention has the following beneficial effects:

1. the problem of great increase of production cost caused by direct gas emission is effectively avoided by utilizing the system;

2. by utilizing the system, the damage of waste gas to human health is avoided, and the potential safety hazard is effectively reduced;

3. the temperature of the rare gas is reduced, the cleanliness of the rare gas is increased and the cyclic utilization rate of the rare gas is improved through the heat exchanger and the oil-filtering water filter;

4. controlling the gas pressure at 0.1-10MPa by a gas compressor so as to meet the high-pressure requirements of various production devices;

5. through the use of a plurality of ball valves, when emergency such as trouble appears, effectively shorten accident handling time.

Drawings

Fig. 1 is a block diagram schematically showing the structure of the present embodiment.

Description of reference numerals: 1. a blower; 2. a first level cache tank; 3. a first pressure gauge; 4. a thermometer; 5. other gas content monitoring tables; 6. a first check valve; 7. a flow meter; 8. a second level cache tank; 9. a second check valve; 10. a gas compressor; 11. a first ball valve; 12. a heat exchanger; 13. a second ball valve; 14. a first stage oil filter; 15. a secondary oil filtering water filter; 16. a third ball valve; 17. a fourth ball valve; 18. a fifth ball valve; 19. a third check valve; 20. a third-level cache tank; 21. a sixth ball valve; 22. an electric control valve; 23. a seventh ball valve; 24. an eighth ball valve; 25. a second pressure gauge; 26. a ninth ball valve; 27. a fourth check valve.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1, a high pressure recycling system uses a low pressure circulating gas which is a gas having a pressure of 0.1MPa or less and a temperature of less than 500 ℃, and the gas may be a rare gas such as helium (He), neon (Ne), argon (Ar), krypton (Kr), and xenon (Xe), or a mixture of rare gases, or a non-rare gas such as nitrogen and hydrogen, or a mixture of non-rare gases, or a mixture of rare gases and non-rare gases.

The high-pressure recycling system comprises a blower 1, a first-level cache tank 2, a second-level cache tank 8, a gas compressor 10, a heat exchanger 12, an oil filtering and water filtering mechanism and a third-level cache tank 20 which are connected in sequence. The blower 1 is used to introduce low-pressure recycle gas into the first-stage buffer tank 2. A first check valve 6 is arranged between the first-level cache tank 2 and the second-level cache tank 8 to control the circulation gas to be delivered to the second-level cache tank 8. The outlet end of the third stage cache tank 20 is provided with a fourth check valve 27 for controlling the delivery of recycle gas to the production plant and a ninth ball valve 26 for introducing fresh gas. The gas compressor 10 is used for controlling the pressure of the circulating gas to be 0.1-10 Mpa; the heat exchanger 12 and the oil filtering and water filtering mechanism are used for controlling the temperature of the circulating gas to be less than or equal to 60 ℃ and controlling the oil content in the circulating gas to be less than or equal to 0.01 percent; the heat exchanger 12 is made of stainless steel, the cooling medium of the heat exchanger 12 is liquid or gas, and the oil filtering and water filtering mechanism is used for filtering oil and water.

Therefore, the low-pressure circulating gas is input into the first-level buffer tank 2 for buffer storage through the air blower 1, and then enters the second-level buffer tank 8, the gas compressor 10, the heat exchanger 12 and the oil filtering and water filtering mechanism in sequence, so that the pressure of the low-pressure circulating gas reaches a set value under the control of the gas compressor 10, effective temperature control is performed under the action of the heat exchanger 12, the circulating gas is dried and degreased and cleaned by the oil filtering and water filtering mechanism, the circulating gas with high cleanliness is obtained, the purpose of improving the safety effect of high-pressure gas circulation is achieved, and the problem that the production cost is greatly increased due to direct gas emission is solved.

It should be mentioned that the first level buffer tank 2 is provided with a first pressure gauge 3, a temperature gauge 4 and other gas content monitoring gauges 5. First manometer 3 is used for monitoring 2 internal pressures of one-level buffer tank, and thermometer 4 is used for monitoring 2 interior temperatures of one-level buffer tank, and other gas content monitoring table 5 are used for monitoring other gas content in one-level buffer tank 2, realize the purpose of effective control and monitoring one-level buffer tank 2. The third level buffer tank 20 is provided with a second pressure gauge 25. The second pressure gauge 25 is used for monitoring the pressure in the third-level cache tank 20, and the purpose of effectively monitoring the second-level cache tank 8 is achieved. Meanwhile, a flow meter 7 is provided between the first check valve 6 and the second stage buffer tank 8, and a second check valve 9 is provided between the second stage buffer tank 8 and the gas compressor 10. The flow meter 7 is used for detecting the flow of the circulating gas delivered from the first-level buffer tank 2 to the second-level buffer tank 8, and the second check valve 9 plays a role in effectively controlling the stability of the delivery of the circulating gas in the second-level buffer tank 8 to the gas compressor 10.

As shown in fig. 1, the third-level buffer tank 20 is connected with an electric control valve 22. The other end of the electric control valve 22 is connected to the outlet end of the second check valve 9. Wherein, the two ends of the electric regulating valve 22 are respectively provided with a sixth ball valve 21 and a seventh ball valve 23, and an eighth ball valve 24 is arranged between the inlet end of the sixth ball valve 21 and the outlet end of the seventh ball valve 23. Therefore, the electric control valve 22 and the corresponding sixth ball valve 21, seventh ball valve 23 and eighth ball valve 24 play a role in effectively controlling the flow stability of the circulating gas of the system, and effectively shortening the accident handling time in case of an emergency such as a failure.

It should be noted that the oil filtering and water filtering mechanism includes a first-stage oil filtering and water filtering device 14 and a second-stage oil filtering and water filtering device 15 which are connected in sequence. A third check valve 19 is arranged between the second-stage oil-filtering water filter 15 and the third-stage buffer tank. The primary oil-filtering water filter 14 and the secondary oil-filtering water filter 15 are mutually cooperated, so that the purposes of remarkably improving the drying and oil-removing cleaning effects of the circulating gas are achieved; meanwhile, the third check valve 19 plays a role in effectively controlling the stability of the delivery of the circulating gas in the second-stage oil-filtering water filter 15 to the third-stage buffer tank. In order to further control the flow stability of the circulating gas of the system, a second ball valve 13 is arranged between the heat exchanger 12 and the first-stage oil-filtering water filter 14, and a third ball valve 16 is arranged between the second-stage oil-filtering water filter 15 and a third check valve 19, so that the accident handling time is effectively shortened in the case of emergency such as failure.

As shown in fig. 1, the high pressure recycling system further includes a fourth ball valve 17 and a fifth ball valve 18 which are connected in sequence. The inlet end of the fourth ball valve 17 is connected with the heat exchanger 12 and the second ball valve 13, the outlet end of the fifth ball valve 18 is connected with the third ball valve 16 and the third check valve 19, and the fourth ball valve 17 and the fifth ball valve 18 are connected with the first-stage oil-filtering water filter 14 and the second-stage oil-filtering water filter 15. Therefore, the fourth ball valve 17 and the fifth ball valve 18 can effectively control the flow stability of the circulating gas of the system, and the accident handling time can be effectively shortened in the case of emergency such as failure.

In conclusion, the system can effectively avoid the problem that the production cost is greatly increased due to the fact that gas is directly discharged, and effectively avoid the damage of waste gas to human health, so that potential safety hazards are reduced; meanwhile, the temperature of the rare gas is reduced and the cleanliness of the rare gas is increased through the heat exchanger 12 and the oil-filtering water filter, the cyclic utilization rate of the rare gas is improved, the cost is obviously reduced, and meanwhile, the gas pressure is controlled to be 0.1-10MPa through the gas compressor 10 so as to meet the high-pressure requirements of various production devices; in order to effectively shorten the accident handling time in case of emergency such as failure, a plurality of ball valves are further adopted for pipeline control, and the system has the characteristic of high safety.

References in this application to "first," "second," "third," "fourth," etc., if any, are intended to distinguish between similar elements and not necessarily to describe a particular order or sequence. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, or apparatus.

It should be noted that the descriptions in this application referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.