CN105665377A - Gas way cleaning system and cleaning method - Google Patents
Gas way cleaning system and cleaning method Download PDFInfo
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- CN105665377A CN105665377A CN201610023789.1A CN201610023789A CN105665377A CN 105665377 A CN105665377 A CN 105665377A CN 201610023789 A CN201610023789 A CN 201610023789A CN 105665377 A CN105665377 A CN 105665377A
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- gas
- valve
- source
- air inlet
- mixer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a gas way cleaning system. The system comprises following components including gas sources to be detected, a dilution gas source, a cleaning gas source, a gas mixing device, a gas detection device, a plurality of valves and a gas pipeline for gas transmission between all components; the gas sources to be detected are connected to the gas mixing device, and the gas mixing device is composed of at least three air inlets and at least one air outlet; and the air outlets are connected with the gas detection device, the first air inlet is connected with the gas sources to be detected and the dilution gas source through one valve, the second air inlet is connected with the dilution gas source through one valve, and the third air inlet is connected with the cleaning gas source through one valve. The invention further provides a gas way cleaning method for the cleaning system. The method is used for solving the problems that in the prior art, gas with a high flow speed cannot be used for cleaning, and consequently, the cleaning time is long, and the cleaning effect is poor.
Description
Technical field
The present invention relates to a kind of gas circuit purging system and cleaning method, particularly relate to a kind of two grades of purging systems for dynamic air-distributing gas circuit and cleaning method.
Background technology
Gas detecting is tested, for instance gas sensor test, adsorbent test, vehicle exhaust or steamer tail gas simulation etc., it usually needs be equipped with dynamic air-distributing gas circuit. After measuring after a sample or experiment terminates, gas circuit needs to clear up, in order to carries out next sample test or tests next time; It addition, a lot of experiments relate to corrosive gas, such as hydrogen sulfide, hydrogen chloride etc., for the consideration to service life of equipment, especially high-precision mass flowmenter, cleaning gas circuit, maintenance dry and are all necessary.
The gas circuit cleaning method generally adopted is: directly use carrier gas, it is generally nitrogen or dry air, complete equipment is carried out, but the method will necessarily be not suitable for, through effusion meter etc., the parts that the gas of the bigger flow velocity of use is carried out, and causes that scavenging period is longer, cleaning performance is not good enough. It is restricted owing to cleaning flow, causes that sensor desorption gas speed is slow, be not suitable for a large amount of collecting sample data. Therefore, also there is experimenter to be unloaded by the parts such as effusion meter, strengthen carrier gas flux, the parts such as gas circuit pipeline and effusion meter are cleaned separately, but the method complex operation, and frequently the parts such as dismounting effusion meter easily cause damage and moisture-induced corrosion.
Therefore, develop a set of efficient dynamic air-distributing gas circuit purging system, both can guarantee that cleaning rapid and convenient, again can the long-term stability of maintenance tool equipment, the development tool of gas detecting experiment is of great significance.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of gas circuit purging system and cleaning method, for solving prior art to use the gas of bigger flow velocity be carried out, cause the problem that scavenging period is longer, cleaning performance is not good enough.
For achieving the above object and other relevant purposes, the present invention provides a kind of gas circuit purging system to include with lower component: source of the gas to be measured, dilution source of the gas, source of purge gas, gas mixer, gas-detecting device, multiple valve and for the gas piping of gas transmission between each parts. Each source of the gas to be measured is connected to described gas mixer, described gas mixer has at least three air inlet and at least one gas outlet, described gas outlet is connected with described gas-detecting device, first air inlet is connected with source of the gas to be measured and dilution source of the gas by valve, second air inlet is connected with dilution source of the gas by valve, and the 3rd air inlet is connected by valve and source of purge gas.
Preferably, first valve is arranged at the gas piping between described dilution source of the gas and source of the gas to be measured, second valve is arranged at the gas piping between described source of the gas to be measured and gas mixer the first air inlet, 3rd valve is arranged at the gas piping between described dilution source of the gas and gas mixer the second air inlet, and the 4th valve is arranged at the gas piping between described source of purge gas and gas mixer the 3rd air inlet.
Preferably, also include multiple gas flow control device, first gas flow control device is arranged at the gas piping between described source of the gas to be measured and described gas mixer the first air inlet, and the second gas flow control device is arranged at the gas piping between described dilution source of the gas and described gas mixer the second air inlet.
Preferably, gas-detecting device is connected with air pump by detachable connector.
Preferably, gas flow control device is the mass flowmenter with flow control function.
Preferably, source of purge gas is identical with the source of the gas of dilution source of the gas.
Preferably, described valve is multiple manually-operated gate and the combination of multiple automatic valve.
The present invention also provides for the gas circuit cleaning method of a kind of described purging system: step one, close the 4th valve, all the other valve openings, open dilution source of the gas, dilution source of the gas release diluent gas, diluent gas enters gas piping by the first valve, the second valve and the 3rd valve and is carried out; Step 2, stops diluent gas and passes into, close the first valve, the second valve and the 3rd valve, open the 4th valve, open source of purge gas, and gas is cleaned in source of purge gas release, cleans gas and is carried out by the 4th valve entrance gas piping.
Preferably, in step 2, before opening source of purge gas, also include the step being connected air pump by detachable connector.
Preferably, before gas circuit cleaning step, also include gas detecting step, close the first valve and the 4th valve, all the other valve openings, release diluent gas and gas to be measured; Gas to be measured enters gas mixer by the second valve; Dilution source of the gas release diluent gas, diluent gas enters gas mixer by the 3rd valve and gas to be measured is mixed to form mixing gas, and described mixing gas enters gas-detecting device detection and sensor response, produces signal of telecommunication output.
As it has been described above, a kind of gas circuit purging system of the present invention and cleaning method, have the advantages that
1) the gas circuit rinser of the present invention can be greatly reduced scavenging period, purged with purge gas process continues the cleaning that can realize distribution gas circuit less than 10 minutes, compared with scavenging period more than usual half an hour, it is even less that scavenging period foreshortens to 1/3.
2) gas circuit being connected to gas flow control device is first carried out low discharge cleaning with diluent gas by the present invention, and namely one-level is cleaned; With cleaning gas, all the other gas circuits and chamber are carried out big flow Rapid Cleaning again, i.e. two grades of cleanings. While the present invention is greatly reduced scavenging period, it is possible to avoid excessive equipment is impacted of flow even to damage.
3) present invention is impacted by the cleaning gas flow of big flow so that it is more thorough that the residual gas of pipeline and chamber inner wall is rinsed.
Accompanying drawing explanation
Fig. 1 is shown as a kind of gas circuit purging system schematic diagram of the present invention.
Element numbers explanation
1 dilution source of the gas
2 sources of the gas to be measured
301 first gas flow control devices
302 second gas flow control devices
4 four-way pipes
5 gas mixers
6 source of purge gas
7 gas-detecting devices
8 detachable connectors
9 air pumps
101-103 the first valve
104-106 the second valve
109 the 3rd valves
107 the 4th valves
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art the content disclosed by this specification can understand other advantages and effect of the present invention easily.
Refer to Fig. 1. Notice, the structure of this specification institute accompanying drawings depicted, ratio, size etc., all only in order to coordinate the disclosed content of description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of the present invention, therefore do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, under not affecting effect that the present invention can be generated by and the purpose that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain. Simultaneously, in this specification cited as " on ", D score, "left", "right", " centre " and " one " etc. term, it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents without essence, when being also considered as the enforceable category of the present invention.
Embodiment one
As it is shown in figure 1, the present invention provides a kind of gas circuit purging system to include: source of the gas 2 to be measured, dilution source of the gas 1, source of purge gas 6, gas mixer 5, gas-detecting device 7, multiple valve and for the gas piping of gas transmission between each parts. Wherein, one or more in source of the gas 2 to be measured, dilution source of the gas 1 and source of purge gas 6 adopt pressure gas cylinder to store, and steel cylinder carries pressure loading valve. Diluent gas 1 and clean gas 6 and be high pure nitrogen, gas 2 to be measured be concentration at 1～1000ppm with nitrogen as three kinds of calibrating gas sulfur dioxide of Balance Air, nitrogen dioxide and nitric oxide. Source of purge gas 6 is identical with the gaseous species of dilution source of the gas 1. Clean gas except the nitrogen adopted in the present embodiment, it is also possible to for pure air, argon, or other noble gas, but should ensure that the cleaning of gas and dry, it is possible to ensure gas drying by installing gas drier additional.
Each source of the gas to be measured 2 is connected to gas mixer 5, gas mixer 5 has at least three air inlet and at least one gas outlet, the gas outlet of gas mixer 5 is connected with gas-detecting device 7, first air inlet is connected with source of the gas 2 to be measured and dilution source of the gas 1 by valve, second air inlet is connected with dilution source of the gas 1 by valve, and the 3rd air inlet is connected by valve and source of purge gas 6.
Wherein, three the first valves (valve 101, valve 102, valve 103) are arranged at the gas piping between dilution source of the gas 1 and source of the gas to be measured 2, three the second valves (valve 104, valve 105 and valve 106) are arranged at the gas piping between source of the gas 2 to be measured and gas mixer 5 first air inlet, one the 3rd valve 109 is arranged at the gas piping between dilution source of the gas 1 and gas mixer 5 second air inlet, and the 4th valve 107 is arranged at the gas piping between source of purge gas 6 and gas mixer 5 the 3rd air inlet.
Further, also include multiple gas flow control device, three the first gas flow control devices 301 are arranged at the gas piping between source of the gas 2 to be measured and gas mixer 5 first air inlet, and second gas flow control device 302 is arranged at the gas piping between dilution source of the gas 1 and gas mixer 5 second air inlet. The range of described second gas flow control device 302 is be more than or equal to the range of the first gas flow control device 301. Concrete, the first gas flow control device 301 range is 0～10sccm, and the second gas flow control device 302 range is 0～3slm.Gas flow control device is the mass flow control appts with flow control function.
Concrete, gas mixer 5 gas outlet, valve, gas-detecting device 7, valve are sequentially connected composition the first gas output gas circuit. Dilution source of the gas the 1, first valve, first gas flow control device the 301, second valve, gas mixer 5 first air inlet are sequentially connected composition the first gas circuit input gas circuit; Source of the gas to be measured 2, first gas flow control device the 301, second valve, gas mixer 5 first air inlet are sequentially connected composition the second gas input gas circuit; Dilution source of the gas the 1, second gas flow control device the 302, the 3rd valve 109, gas mixer 5 second air inlet are sequentially connected composition the 3rd gas input gas circuit; Source of purge gas the 6, the 4th valve 107, gas mixer 5 the 3rd air inlet are sequentially connected composition the 4th gas circuit input gas circuit.
Further, valve is multiple manually-operated gate and the combination of multiple automatic valve. Automatic valve can be electromagnetic valve, and electromagnetic valve can be uniformly controlled by a switch, it is simple to quickly switches gas. Manually-operated gate can be common knob valve, safe and reliable.
It is noted that gas mixer 5 first air inlet connects the mixing gas of gas 2 to be measured by four-way pipe 4, gas to be measured is introduced into four-way pipe premixing, enter back into gas mixer to mix with diluent gas, the fluctuation of gas concentration can be reduced, contribute to mixing more rapid, evenly.
Further, gas-detecting device 7 can also be connected with air pump 9 by detachable connector 8. Air pump 9 adopts the quiet vacuum air pump 9 of oil-free, and air pump 9 front end is provided with detachable connector 8, can select to use according to the needs of gas washing.
Further, clean in gas circuit pipeline and can also need to install other parts (such as exsiccator, humidifier, ultraviolet etc.) additional according to user, gas is carried out other and processes (such as drying kinetics, humidifying, sterilization etc.), in order to reach better cleaning performance.
Further, this enforcement can also include gas-detecting device 7, analysis is made directly for cleaning performance, it is ensured that cleaning performance, more precise control degree of cleaning. Additionally, the dynamic gas mixer in the present embodiment all adopts stainless steel, including gas mixer 5, gas-detecting device 7, valve, four-way pipe 4 and gas circuit pipeline etc., it is possible to be effectively prevented the corrosive gas corrosion to device.
Embodiment two
As it is shown in figure 1, the present invention provides a kind of gas circuit cleaning method.
Step one, gas detecting, close the first valve (valve 101, valve 102, valve 103) and the 4th valve 107, all the other valve openings, open source of the gas 2 to be measured and dilution source of the gas 1, release diluent gas and gas to be measured. Gas to be measured by first gas flow control device the 301, second valve (valve 104, valve 105 and valve 106), eventually pass four-way pipe 4 and converge into and enter gas mixer 5 after one; Diluent gas is mixed to form the mixing gas of certain concentration by the gas to be measured after the second gas flow control device the 302, the 3rd valve 109, entrance gas mixer 5 and premixing, enter gas-detecting device and sensor response by valve 108 after mixing gas, produce signal of telecommunication output. Finally, mixing gas is discharged by valve 110 and exhaust gas processing device, after gas detecting experiment terminates, stops passing into of gas 2 to be measured and diluent gas 1.
Step 2, gas one-level is cleaned, and the first gas flow control device 301 and the second gas flow control device 302 are transferred to the maximum of range, closes the 4th valve 107, all the other valve openings. Opening dilution source of the gas 1, dilution source of the gas 1 discharges diluent gas, and diluent gas is entered gas piping be carried out by the first valve, the second valve and the 3rd valve 109. This process continued less than 5 minutes, the first gas can input gas circuit and the 3rd gas input branch road, rinse well. One-level is cleaned after terminating, and closes the first valve, the second valve (valve 104, valve 105, valve 106) and the 3rd valve 109, then, stops diluent gas 1 and passes into.
Step 3, gas two grades cleaning, connect air pump 9 by detachable connector 8, open the 4th valve 107. Open source of purge gas, gas is cleaned in source of purge gas release, clean gas and carry out big flow cleaning by the 4th gas input gas circuit entrance gas mixer and gas-detecting device, it is possible to the first gas output gas circuit do not cleaned when one-level being cleaned quickly thoroughly is cleaned. It is noted that by the flow of the 4th valve more than by the flow of any one valve in the first valve, the second valve and the 3rd valve. In the present embodiment, cleaning gas 6 and can use more than the flow of 5slm, large flow-rate gas stream contributes to sloughing the residual gas in trachea and chamber, and this process continued less than 5 minutes, and system can be made to quickly recover in dry nitrogen atmosphere. Now the second valve (valve 104, valve 105, valve 106) and the 3rd valve 109 are closed, it is possible to shield gas flow rate controls device, it is to avoid the impact of big flow gas causes refluence or damages. In the present embodiment, it is 10slm that gas cylinder valve is opened entirely, also just says that gas cylinder valve knob reaches more than half, can reach more than 5slm.
Further, gas mixer in this enforcement also includes the second gas outlet, it is possible to closed by valve 108 when one-level is cleaned, and diluent gas is discharged either directly through the second gas outlet, valve and exhaust gas processing device, shorten the discharge distance of dilution gas circuit, accelerate cleaning speed.
The present invention pass through microcomputer control system, the key parameter to device, as temperature, pressure and flow carry out Full-automatic monitoring, easy to operate.
In sum, a kind of gas circuit purging system of the present invention and cleaning method, have the advantages that
1) the gas circuit rinser of the present invention can be greatly reduced scavenging period, purged with purge gas process continues the cleaning that can realize distribution gas circuit less than 10 minutes, compared with scavenging period more than usual half an hour, it is even less that scavenging period foreshortens to 1/3.
2) gas circuit being connected to gas flow control device is first carried out low discharge cleaning with diluent gas by the present invention, and namely one-level is cleaned; With cleaning gas, all the other gas circuits and chamber are carried out big flow Rapid Cleaning again, i.e. two grades of cleanings. While the present invention is greatly reduced scavenging period, it is possible to avoid excessive equipment is impacted of flow even to damage.
3) present invention is impacted by the cleaning gas flow of big flow so that it is more thorough that the residual gas of pipeline and chamber inner wall is rinsed.
So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment is illustrative principles of the invention and effect thereof only, not for the restriction present invention. Above-described embodiment all under the spirit and category of the present invention, can be modified or change by any those skilled in the art. Therefore, art has usually intellectual such as modifying without departing from all equivalences completed under disclosed spirit and technological thought or change, must be contained by the claim of the present invention.
Claims (10)
1. a gas circuit purging system, it is characterized in that, described gas circuit purging system includes with lower component: source of the gas to be measured, dilution source of the gas, source of purge gas, gas mixer, gas-detecting device, multiple valve and for the gas piping of gas transmission between each parts;
Each source of the gas to be measured is connected to described gas mixer, described gas mixer has at least three air inlet and at least one gas outlet, described gas outlet is connected with described gas-detecting device, first air inlet is connected with described source of the gas to be measured and described dilution source of the gas by valve, second air inlet is connected with described dilution source of the gas by valve, and the 3rd air inlet is connected by valve and described source of purge gas.
2. gas circuit cleaning method according to claim 1, it is characterized in that: described first valve is arranged at the gas piping between described dilution source of the gas and source of the gas to be measured, second valve is arranged at the gas piping between described source of the gas to be measured and gas mixer the first air inlet, 3rd valve is arranged at the gas piping between described dilution source of the gas and gas mixer the second air inlet, and the 4th valve is arranged at the gas piping between described source of purge gas and gas mixer the 3rd air inlet.
3. gas circuit purging system according to claim 1, it is characterized in that: also include multiple gas flow control device, first gas flow control device is arranged at the gas piping between described source of the gas to be measured and described gas mixer the first air inlet, and the second gas flow control device is arranged at the gas piping between described dilution source of the gas and described gas mixer the second air inlet.
4. gas circuit purging system according to claim 1, it is characterised in that: described gas-detecting device is connected with air pump by detachable connector.
5. gas circuit purging system according to claim 1, it is characterised in that: described gas flow control device is the mass flowmenter with flow control function.
6. gas circuit purging system according to claim 1, it is characterised in that: source of purge gas is identical with the source of the gas of dilution source of the gas.
7. dynamic gas mixer according to claim 1, it is characterised in that: described valve is multiple manually-operated gate and the combination of multiple automatic valve.
8. the gas circuit cleaning method of the purging system as described in any one in claim 1～7, it is characterised in that:
Step one, closes the 4th valve, all the other valve openings, opens dilution source of the gas, dilution source of the gas release diluent gas, and diluent gas enters gas piping by the first valve, the second valve and the 3rd valve and is carried out;
Step 2, stops diluent gas and passes into, close the first valve, the second valve and the 3rd valve, open the 4th valve, open source of purge gas, and gas is cleaned in source of purge gas release, cleans gas and is carried out by the 4th valve entrance gas piping.
9. gas circuit cleaning method according to claim 8, it is characterised in that: in described step 2, before opening source of purge gas, also include the step being connected air pump by detachable connector.
10. gas circuit cleaning method according to claim 8, it is characterised in that: before described gas circuit cleaning step, also include gas detecting step,
Close the first valve and the 4th valve, all the other valve openings, release diluent gas and gas to be measured; Gas to be measured enters gas mixer by the second valve; Dilution source of the gas release diluent gas, diluent gas enters gas mixer by the 3rd valve and gas to be measured is mixed to form mixing gas, and described mixing gas enters gas-detecting device detection and sensor response, produces signal of telecommunication output.
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| CN201610023789.1A CN105665377B (en) | 2016-01-14 | 2016-01-14 | A kind of gas circuit purging system and cleaning method |
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| CN201610023789.1A CN105665377B (en) | 2016-01-14 | 2016-01-14 | A kind of gas circuit purging system and cleaning method |
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| CN105665377B CN105665377B (en) | 2018-04-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106290308A (en) * | 2016-08-04 | 2017-01-04 | 深圳市诺安环境安全股份有限公司 | Range-adaptive VOCs (volatile organic chemicals) online monitoring system and monitoring method |
| CN106621883A (en) * | 2016-12-28 | 2017-05-10 | 张晓燕 | Portable type multi-component gas diluting device |
| CN107340338A (en) * | 2016-12-22 | 2017-11-10 | 辽宁卓异装备制造股份有限公司 | A kind of method of energy continuous acquisition cleaning gas sample |
| CN107525905A (en) * | 2017-09-19 | 2017-12-29 | 苏州奥特福环境科技有限公司 | A kind of sewage detection device |
| CN108303292A (en) * | 2017-12-04 | 2018-07-20 | 优泰科技（深圳）有限公司 | A kind of clear tank instrument of double pump and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108303292A (en) * | 2017-12-04 | 2018-07-20 | 优泰科技（深圳）有限公司 | A kind of clear tank instrument of double pump and control method |
| CN108303292B (en) * | 2017-12-04 | 2024-06-14 | 优泰(湖南)环保科技有限责任公司 | Double-pump tank cleaning instrument and control method |
| CN113474632A (en) * | 2019-02-25 | 2021-10-01 | 株式会社岛津制作所 | Method for cleaning gas supply unit in gas inspection device |
| CN110095325A (en) * | 2019-05-28 | 2019-08-06 | 山东瑞泽检测评价技术服务有限公司 | A kind of miniature small traffic timing gas sampler of airbag |
| CN110878911A (en) * | 2019-11-28 | 2020-03-13 | 苏州华杨赛斯真空设备有限公司 | Multi-path independent air inlet system |
| CN111001624A (en) * | 2019-12-24 | 2020-04-14 | 安徽兴锂新能源有限公司 | Cleaning device and method for lithium ion battery electrolyte conveying joint |
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