CN101708442B - Fully automatic standard gas preparation device - Google Patents

Fully automatic standard gas preparation device Download PDF

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Publication number
CN101708442B
CN101708442B CN2009100177960A CN200910017796A CN101708442B CN 101708442 B CN101708442 B CN 101708442B CN 2009100177960 A CN2009100177960 A CN 2009100177960A CN 200910017796 A CN200910017796 A CN 200910017796A CN 101708442 B CN101708442 B CN 101708442B
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CN
China
Prior art keywords
gas
magnetic valve
electromagnetic valve
circuit
standard gas
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Expired - Fee Related
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CN2009100177960A
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Chinese (zh)
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CN101708442A (en
Inventor
毕海成
王志广
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ZHONGHUI INSTRUMENT CO Ltd
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ZHONGHUI INSTRUMENT CO Ltd
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Priority to CN2009100177960A priority Critical patent/CN101708442B/en
Publication of CN101708442A publication Critical patent/CN101708442A/en
Application granted granted Critical
Publication of CN101708442B publication Critical patent/CN101708442B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a fully automatic standard gas preparation device. The device comprises high pressure bottom gas air-circuits, a raw material gas air-circuit, a thermostatic chamber, a standard gas mixing bottle, a vacuum pump, a pressure sensor and a plurality of electromagnetic valves. The device is characterized in that a six-way valve and a quantitative tube are added in the thermostatic chamber, wherein the 5-end and 6-end of the six-way valve are separately connected with the two ends of the quantitative tube, the 4-end is connected with the vacuum pump through the electromagnetic valves, the 3-end is communicated with the raw material gas through the raw material gas air-circuit, the 1-end is connected with a high pressure bottom gas air-circuit provided with a first electromagnetic valve and a second electromagnetic valve, the 2-end is connected with the vacuum pump through an air-circuit provided with a fourth electromagnetic valve and a sixth electromagnetic valve, isconnected with an air-circuit arranged between the first electromagnetic valve and the second electromagnetic valve through an air-circuit provided with the fourth electromagnetic valve and a third electromagnetic valve, and is connected with the standard gas preparation bottle through an air-circuit provided with the fourth electromagnetic valve and a fifth electromagnetic valve, and the pressure sensor is arranged in an air-circuit arranged between the fifth electromagnetic valve and the standard gas mixing bottle. The device has accurate preparation content and high efficiency and the prepared standard gas can reach the national first-class standard.

Description

Fully automatic standard gas preparation device
Technical field
The invention provides a kind of fully automatic standard gas preparation device, belong to the Electric automation technology field.
Background technology
The effect of standard substance is to realize accurately consistent measurement, guarantees magnitude tracing.Calibrating gas is widely used in calibration, atmosphere environment supervision, health care, the clinical examination of product quality supervision and quality control, instrument and meter, the fields such as evaluation of analytical method, the preparation method of calibrating gas has multiple, as gravimetric method, static capacity method and dynamic anemostat method etc., the wherein wt method is most widely used in China.Gravimetric method is with the absolute method of measurement of quality as benchmark, has the high characteristics of the degree of accuracy, belongs to internationally recognized standard method.Traditional gravimetric method, the weighing of its component gas are the keys of preparation standard gas since the quality of gas cylinder own big (be generally 2~20kg), and the component gas quality that charges into less relatively (2~20g), therefore require very high to balance.Need to adopt the high-accuracy balance weighing of big load (20kg), small sensible weight (10mg) to charge into the unstrpped gas of gas cylinder, charge into the high pressure spirit of gas cylinder with electronic balance [maximum load (16kg), sensibility reciprocal (0.1g)] weighing.For very a spot of gas of institute's filling in the gas cylinder that accurately the weighing quality is very big, except balance is had high requirements, also require to guarantee certain weighed amount.Like this, in the weighing operation, be difficult to guarantee to reach the very high degree of accuracy.And, in the time of preparing the multicomponent calibrating gas, precision weighing unstripped gas to be prepared repeatedly
Quality, very high to the stability and the accuracy requirement of operation, process is very loaded down with trivial details.
Adopt fully automatic standard gas preparation device, the quality that participates in the unstripped gas of preparation is passed through mass flowmenter, obtain by the computer accurate Calculation, measuring accuracy increases substantially, exempted manual gravimetric method the craft that must adopt take by weighing the complicated processes of unstripped gas and high pressure dilution spirit, improve automatization level, and can realize the preparation of any concentration standard gas and multicomponent calibrating gas automatically.
Summary of the invention
The purpose of this invention is to provide a kind ofly can overcome above-mentioned defective, formulation content is accurate, efficient is high, and can realize the continuous preparation fully automatic standard gas preparation device of the multicomponent calibrating gas of single gas cylinder.Its technology contents is:
Comprise computer, be provided with the high pressure spirit gas circuit of magnetic valve, be provided with the unstripped gas gas circuit of mass flowmenter and magnetic valve, thermostatic chamber, the standard gas distributing bottle, vavuum pump, temperature measuring set, pressure sensor and some magnetic valves, it is characterized in that: in thermostatic chamber, set up six-way valve and quantity tube, the 5. end of six-way valve wherein, 6. the end correspondence connects the two ends of quantity tube, 4. hold by the 7th magnetic valve and connect vavuum pump, 3. hold by the unstripped gas gas circuit and connect unstripped gas, 1. termination is provided with the high pressure spirit gas circuit of first magnetic valve and second magnetic valve, 2. end connects vavuum pump through the gas circuit that is provided with the 4th magnetic valve and the 6th magnetic valve successively, connect gas circuit between first magnetic valve and second magnetic valve through the gas circuit that is provided with the 4th magnetic valve and the 3rd magnetic valve successively, connect the standard gas distributing bottle through the gas circuit that is provided with the 4th magnetic valve and the 5th magnetic valve successively, pressure sensor is arranged on the gas circuit between the 5th magnetic valve and the standard gas distributing bottle, temperature measuring set, mass flowmenter, the output of pressure sensor all connects computer, the quality that participates in the unstripped gas of preparation is the flow signal by mass flowmenter, calculates and gets through computer.
Described fully automatic standard gas preparation device, unstripped gas gas circuit are to be provided with a road of mass flowmenter and the 8th magnetic valve, the 3. end of output termination six-way valve.
Described fully automatic standard gas preparation device, the unstripped gas gas circuit is a multichannel, whenever be equipped with mass flowmenter and the 8th magnetic valve on the way, output all connects the 3. end of six-way valve, magnetic valve and mass flowmenter by any interpolation control break-make on the pipeline contact that the gas kind that participates in preparing can go out in the 3. termination of six-way valve obtain, the homogeneous raw material gas of being prepared also can be by the flow signal of computer acquisition quality flowmeter, the unstripped gas quality that control enters quantity tube realizes the preparation of any concentration standard gas.
Described fully automatic standard gas preparation device, thermostatic chamber adopt the constant temperature air chamber, and 50 ℃ of the temperature constant of thermostatic chamber during preparing calibrating gas with six-way valve constant temperature to 50 ℃, realize the constant temperature distribution.
Described fully automatic standard gas preparation device, the standard gas distributing bottle is arranged in the container that is provided with temperature measuring set.
Its operation principle is: six-way valve outage, be positioned at initial position, and the thermostatic chamber at six-way valve place is carried out 50 ℃ of constant temperature, constant temperature time arrives, and opens vavuum pump.Open the 5th magnetic valve, the 6th magnetic valve and the 7th magnetic valve, vavuum pump by the 7th magnetic valve respectively to quantity tube, the standard gas distributing bottle is vacuumized by the 6th magnetic valve and the 5th magnetic valve, after recording the end vacuum (10Pa) that is extracted into regulation by pressure sensor, close the 5th magnetic valve, the 6th magnetic valve and the 7th magnetic valve, close vavuum pump.Open the 8th magnetic valve, unstripped gas enters quantity tube by mass flowmenter, the 8th magnetic valve, and the unstripped gas that enters quantity tube is closed the 8th magnetic valve after reaching the mass M 1 that sets.With the six-way valve energising, make six-way valve switch to the second place.Open successively first, second, the 4th, the 5th magnetic valve, the unstripped gas that the high pressure spirit will be connected in the quantity tube of six-way valve pours the standard gas distributing bottle.After continuing for some time and guarantee that unstrpped gas in the quantity tube all enters the distribution bottle, close the second, the 4th magnetic valve, open the 3rd magnetic valve, the high pressure spirit continues the pressurising of distribution bottle by the first, the 3rd, the 5th magnetic valve, up to the force value of regulation.By the temperature of the pressure of the volume of distribution bottle, distribution bottle mesohigh spirit and the distribution bottle place environment that records, the quality that obtains entering the high pressure spirit of distribution bottle according to standard gaseous equation is M2.The mass M 1 and the gaseous mixture gross mass (M1+M2) of the aforesaid unstripped gas that enters the distribution bottle) ratio, be the gas content of institute's preparing calibrating gas: G=M1/ (M1+M2), unit conversion are the PPM value.
The present invention compared with prior art, utilize the standard gas preparation device preparing calibrating gas, process for preparation is all realized automation, compare with traditional gravimetric method, confecting efficiency, the content degree of accuracy all significantly improve, and can realize the continuous preparation of the multicomponent calibrating gas of single gas cylinder greatly having improved operating efficiency, the index of the calibrating gas that preparation is come out reaches the standard of country-level standard substance.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Among the figure: 1, computer 2, mass flowmenter 3, thermostatic chamber 4, standard gas distributing bottle 5, vavuum pump 6, temperature measuring set 7, pressure sensor 8, six-way valve 9, quantity tube 10, container F 1, the first magnetic valve F2, the second magnetic valve F3, the 3rd magnetic valve F4, the 4th magnetic valve F5, the 5th magnetic valve F6, the 6th magnetic valve F7, the 7th magnetic valve F8, the 8th magnetic valve
The specific embodiment
In the embodiment in figure 1, a of all magnetic valves end expression electromagnetic valve entrance, b end expression electromagnetic valve outlet.Thermostatic chamber 3 adopts the constant temperature air chamber, six-way valve 8 and quantity tube 9 all are arranged in the thermostatic chamber 3, standard gas distributing bottle 4 is arranged in the container 10 that is provided with temperature measuring set 6,5. the end of six-way valve 8,6. the end correspondence connects the two ends of quantity tube 9,4. hold by the 7th magnetic valve F7 and connect vavuum pump 5,3. hold unstripped gas gas circuit to connect unstripped gas by being provided with mass flowmenter 2 and the 8th magnetic valve F8,1. termination is provided with the high pressure spirit gas circuit of the first magnetic valve F1 and the second magnetic valve F2,2. end connects vavuum pump 5 through the gas circuit that is provided with the 4th magnetic valve F4 and the 6th magnetic valve F6 successively, connect gas circuit between the first magnetic valve F1 and the second magnetic valve F2 through the gas circuit that is provided with the 4th magnetic valve F4 and the 3rd magnetic valve F3 successively, connect standard gas distributing bottle 4 through the gas circuit that is provided with the 4th magnetic valve F4 and the 5th magnetic valve F5 successively, pressure sensor 7 is arranged on the road between the 5th magnetic valve F5 and the standard gas distributing bottle 4, temperature measuring set 6, mass flowmenter 2, the output of pressure sensor 7 all connects computer 1, the quality that participates in the unstripped gas of preparation is the flow signal by mass flowmenter 2, and machine 1 calculates and gets as calculated.
As required, the unstripped gas gas circuit also can be multichannel, the 8th magnetic valve F8 and mass flowmenter 2 by any interpolation control break-make on the pipeline contact A that the gas kind that participates in preparing can go out in the 3. termination of six-way valve 8 obtain, the homogeneous raw material gas of being prepared also can be by the flow signal of computer 1 acquisition quality flowmeter 2, the unstripped gas quality that control enters quantity tube 9 realizes the preparation of any concentration standard gas.Can realize the continuous preparation of the multicomponent calibrating gas of single gas cylinder, greatly improve operating efficiency, the index of the calibrating gas that preparation is come out reaches the standard of country-level standard substance.

Claims (5)

1. fully automatic standard gas preparation device, comprise computer (1), be provided with the high pressure spirit gas circuit of magnetic valve, be provided with the unstripped gas gas circuit of mass flowmenter (2) and magnetic valve, thermostatic chamber (3), standard gas distributing bottle (4), vavuum pump (5), temperature measuring set (6), pressure sensor (7) and some magnetic valves, it is characterized in that: in thermostatic chamber (3), set up six-way valve (8) and quantity tube (9), the 5. end of six-way valve (8) wherein, 6. hold correspondence to connect the two ends of quantity tube (9), 4. hold by the 7th magnetic valve F7 and connect vavuum pump (5), 3. hold by the unstripped gas gas circuit and connect unstripped gas, 1. termination is provided with the high pressure spirit gas circuit of the first magnetic valve F1 and the second magnetic valve F2,2. end connects vavuum pump (5) through the gas circuit that is provided with the 4th magnetic valve F4 and the 6th magnetic valve F6 successively, connect gas circuit between the first magnetic valve F1 and the second magnetic valve F2 through the gas circuit that is provided with the 4th magnetic valve F4 and the 3rd magnetic valve F3 successively, connect standard gas distributing bottle (4) through the gas circuit that is provided with the 4th magnetic valve F4 and the 5th magnetic valve F5 successively, pressure sensor (7) is arranged on the gas circuit between the 5th magnetic valve F5 and the standard gas distributing bottle (4), temperature measuring set (6), mass flowmenter (2), the output of pressure sensor (7) all connects computer (1).
2. fully automatic standard gas preparation device as claimed in claim 1 is characterized in that: the unstripped gas gas circuit is for being provided with a road of mass flowmenter (2) and the 8th magnetic valve F8, the 3. end of output termination six-way valve (8).
3. fully automatic standard gas preparation device as claimed in claim 1 is characterized in that: the unstripped gas gas circuit is a multichannel, whenever is equipped with mass flowmenter (2) and the 8th magnetic valve F8 on the way, and output all connects the 3. end of six-way valve (8).
4. fully automatic standard gas preparation device as claimed in claim 1 is characterized in that: thermostatic chamber (3) adopts constant temperature air chamber, 50 ℃ of the temperature constant of thermostatic chamber during preparing calibrating gas (3).
5. fully automatic standard gas preparation device as claimed in claim 1 is characterized in that: standard gas distributing bottle (4) is arranged in the container (10) that is provided with temperature measuring set (6).
CN2009100177960A 2009-09-04 2009-09-04 Fully automatic standard gas preparation device Expired - Fee Related CN101708442B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN101708442B true CN101708442B (en) 2011-08-24

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564833B (en) * 2010-12-30 2015-02-04 深圳光启高等理工研究院 Preparation method for ethyl nitrite standard gas
CN102172490B (en) * 2011-03-11 2012-12-26 江苏华安科研仪器有限公司 Foam flooding high-pressure gas quantitative injector
CN102580590B (en) * 2012-03-01 2014-10-01 中国计量科学研究院 Micro transfer system for producing gas standard materials and micro transfer method
CN102921338B (en) * 2012-10-26 2014-10-15 上海天科化工检测有限公司 Preparation device of trace component in normal-pressure balance stage-by-stage constant volume type gases
CN103041724B (en) * 2012-12-13 2014-10-08 西南化工研究设计院有限公司 Novel air distributing device in static volume method and air distributing method
CN103543121B (en) * 2013-10-11 2016-02-24 皖江新兴产业技术发展中心 A kind of high-temperature flue gas infrared spectra measuring system on-line calibration apparatus and method
CN103551072B (en) * 2013-10-25 2014-09-03 国家电网公司 Absolute pressure value quantitative mixing gas preparation device and method
CN113351120A (en) * 2021-06-08 2021-09-07 哈尔滨工业大学 Gas mixing system and mixing method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008743A1 (en) * 1987-05-15 1988-11-17 Leybold Aktiengesellschaft Arrangement for producing precise concentrations of gaseous substances and for mixing various gaseous substances in a predetermined ratio
EP0463265A1 (en) * 1990-06-26 1992-01-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for delivery of a gaseous mixture
CN1073878A (en) * 1991-12-11 1993-07-07 美国家用产品公司 With virus antigen expression specificity immunogen
CN101138709A (en) * 2007-06-25 2008-03-12 天津内燃机研究所 Multi-channel mixed gas formulating system
CN201493080U (en) * 2009-09-04 2010-06-02 山东中惠仪器有限公司 Full-automatic standard gas preparation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008743A1 (en) * 1987-05-15 1988-11-17 Leybold Aktiengesellschaft Arrangement for producing precise concentrations of gaseous substances and for mixing various gaseous substances in a predetermined ratio
EP0463265A1 (en) * 1990-06-26 1992-01-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for delivery of a gaseous mixture
CN1073878A (en) * 1991-12-11 1993-07-07 美国家用产品公司 With virus antigen expression specificity immunogen
CN101138709A (en) * 2007-06-25 2008-03-12 天津内燃机研究所 Multi-channel mixed gas formulating system
CN201493080U (en) * 2009-09-04 2010-06-02 山东中惠仪器有限公司 Full-automatic standard gas preparation device

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Inventor after: Bi Haicheng

Inventor after: Wang Zhiguang

Inventor after: Yao Zhenru

Inventor before: Bi Haicheng

Inventor before: Wang Zhiguang

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110824

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CF01 Termination of patent right due to non-payment of annual fee