CN109865440A - A kind of standard gas preparation device - Google Patents

A kind of standard gas preparation device Download PDF

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Publication number
CN109865440A
CN109865440A CN201910249099.1A CN201910249099A CN109865440A CN 109865440 A CN109865440 A CN 109865440A CN 201910249099 A CN201910249099 A CN 201910249099A CN 109865440 A CN109865440 A CN 109865440A
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China
Prior art keywords
gas
appendix
gas cylinder
air inlet
valve
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Granted
Application number
CN201910249099.1A
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Chinese (zh)
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CN109865440B (en
Inventor
巩泉泉
谢连科
王胜锋
江红
尹建光
王坤
张永
窦丹丹
马新刚
刘辉
臧玉魏
张国英
张兆波
陈超
崔相宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Peking University
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
Original Assignee
Peking University
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
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Application filed by Peking University, State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd filed Critical Peking University
Priority to CN201910249099.1A priority Critical patent/CN109865440B/en
Publication of CN109865440A publication Critical patent/CN109865440A/en
Application granted granted Critical
Publication of CN109865440B publication Critical patent/CN109865440B/en
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Abstract

The invention discloses a kind of standard gas preparation device, which includes matching gas cylinder, and described matching in gas cylinder is provided with piston.First air inlet with gas cylinder is connected by the first appendix with the first gas cylinder, and second air inlet with gas cylinder is connected by the second appendix with the second gas cylinder.It is respectively arranged with the first port and the second port on first appendix and the second appendix, is respectively arranged with the first airbag and the second airbag on first port and the second port.Gas side and air inlet side out on first appendix positioned at first airbag are respectively arranged with the first valve and the second valve, are provided with third valve on first port.Gas side and air inlet side out on second appendix positioned at second airbag are respectively arranged with the 4th valve and the 5th valve.The device can not only flexibly prepare the calibrating gas of certain volume as needed, and can guarantee that the pressure of calibrating gas meets a standard atmospheric pressure.

Description

A kind of standard gas preparation device
Technical field
The present invention relates to test experience engineering device technique field, specifically a kind of preparation for preparing calibrating gas is filled It sets.
Background technique
Currently, organic poison detection in part uses direct injected-gas chromatography in workplace, need to prepare a series of Calibrating gas make standard curve.
Device currently used for preparing calibrating gas is primarily present the problem of several respects:
First, it is limited by vessel volume, the calibrating gas of certain volume can only be prepared, it can not be flexible as needed Control distribution volume.
Second, traditional device for formulating needs to be injected separately into distribution spirit and raw material (liquid or gas), and is matching Need to calculate separately the volume of spirit and raw material before system according to volume of a container, operation is more complicated, and is easy error.
The pressure of third, the calibrating gas that traditional device for formulating is prepared often can not strictly meet a normal atmosphere Pressure, concentration inaccuracy when causing draw standard gas, influences the accuracy of detection.
Summary of the invention
In view of the above-mentioned problems, the device can not only be as needed the present invention provides a kind of standard gas preparation device The flexible calibrating gas for preparing certain volume, it is easy to operate, it is not easy to make mistakes, and can guarantee that the pressure of calibrating gas meets One standard atmospheric pressure, guarantees the accuracy of testing result.
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of standard gas preparation device, including match gas cylinder, described matching is provided with piston in gas cylinder, described matches gas cylinder On be provided with air hatch and scale;
First air inlet with gas cylinder is connected by the first appendix with the first gas cylinder, second with gas cylinder into Port is connected by the second appendix with the second gas cylinder;
It is respectively arranged with the first port and the second port on first appendix and the second appendix, described first The first airbag and the second airbag are respectively arranged on port and the second port;
Gas side and air inlet side out on first appendix positioned at first airbag are respectively arranged with the first valve With the second valve, third valve is provided on first port;
Gas side and air inlet side out on second appendix positioned at second airbag are respectively arranged with the 4th valve With the 5th valve.
Further, it is provided with gas-liquid switching mechanism on first appendix and is connected with first appendix Logical feed liquor bottle is provided with piston in the feed liquor bottle.
Further, the gas-liquid switching mechanism includes the U-shaped guide plate being set on first appendix, It is located in the guide plate on first appendix and is provided with arc notch, a sliding is provided in the guide plate Block, and the medial surface of the sliding shoe matches with the arc notch, one end of the sliding shoe is provided with diameter and The identical arc groove of one gas transmission bore, and the axis of the arc groove is parallel with the axis of the first appendix.
Further, inlet tube, and the inlet tube and the feed liquor bottle are provided on first appendix Between be connected by screw thread, the cecum of the feed liquor bottle is provided with liquid outlet, is provided on the tube wall of first appendix Inlet corresponding with the liquid outlet.
Further, the axis co-planar of the axis of the arc notch and the liquid outlet.
Further, it is provided with a push rod on the lateral surface of the sliding shoe, is arranged on the web of the guide plate useful In the strip hole for accommodating the push rod.
Further, second appendix and with being arranged proportional conversion head between gas cylinder, the ratio conversion Head includes plenum chamber, and the side of the plenum chamber is provided with air inlet pipe, the other side of the plenum chamber be provided with it is multiple circumferentially The uniformly distributed escape pipe in direction, and the diameter of the air inlet pipe is more than or equal to the maximum gauge of escape pipe, the escape pipe hangs Dead end is provided with pressing plate, the jack that axis and escape pipe arrangement central axis coincide is provided on the pressing plate, described matches Be provided with the shaft with the jack to cooperation on gas cylinder, and the distance of the shaft to second air inlet be equal to it is described To the distance of escape pipe, the free end of the shaft is provided with limit plate, pressing plate and limit plate is located in the shaft jack Between be arranged with spring.
Further, gasket is provided on the pressing plate.
Further, it is provided on the pressing plate and the one-to-one location hole of the escape pipe, the distribution The positioning protrusion matched with the location hole is provided on bottle.
The beneficial effects of the present invention are:
1, the present apparatus is by with being arranged piston in gas cylinder, and make spirit and gaseous feed be exactly when entering with gas cylinder by Enter according to certain proportion, so as to the flexible calibrating gas for preparing certain volume as needed, without being held by with gas cylinder Long-pending limitation.
2, by the way that the first airbag being made by matter soft material is respectively set on the first appendix and the second appendix With the second airbag, to guarantee that the air pressure with the calibrating gas prepared in gas cylinder is a standard atmospheric pressure, and in draw standard When gas, piston is servo-actuated under the action of external atmosphere pressure, ensure that the concentration of draw standard gas, and then guarantee testing result Accuracy.
3, the present apparatus is not only suitable for gas raw material, while being suitable for liquid charging stock, has stronger practicability.
4, it by Set scale conversion head, can control into the ratio with spirit and gas raw material in gas cylinder, thus suitable Answer the needs of the different compound concentrations of different gas raw material and gas raw material of the same race.
5, when using liquid charging stock preparing calibrating gas, liquid charging stock is spurted into in gas cylinder by Venturi effect, The uniformity for finally obtaining calibrating gas can be effectively ensured.
6, easy to operate, be conducive to improve working efficiency.
Detailed description of the invention
Fig. 1 is the schematic illustration of the present apparatus;
Fig. 2 is the schematic perspective view with gas cylinder entrance;
Fig. 3 is the application state figure one of the present apparatus (raw material is gas);
Fig. 4 is the A-A cross-sectional view in Fig. 3;
Fig. 5 is the enlarged structure schematic diagram of part A in Fig. 4;
Fig. 6 is the application state figure two of the present apparatus (raw material is liquid);
Fig. 7 is the B-B cross-sectional view in Fig. 6;
Fig. 8 is the C-C cross-sectional view in Fig. 6;
Fig. 9 is the enlarged structure schematic diagram of part B in Fig. 8;
Positional diagram of the Figure 10 between guide plate and the first appendix;
Figure 11 is the schematic perspective view of sliding shoe;
Figure 12 is the schematic perspective view of ratio conversion head;
Figure 13 is the schematic perspective view with gas cylinder input end.
In figure: 1- matches gas cylinder, 11- air hatch, the first air inlet of 12-, the second air inlet of 13-, 14- shaft, 141- limit Plate, 15- positioning protrusion, the first appendix of 2-, the first port of 21-, 211- third valve, the first airbag of 22-, the first valve of 23-, The second valve of 24-, 25- inlet tube, 26- feed liquor bottle, 261- liquid outlet, 27- gas-liquid switching mechanism, 271- guide plate, 2711- long Hole, 272- sliding shoe, 2721- push rod, 2722- arc groove, the first gas cylinder of 3-, the second appendix of 4-, the second port of 41-, The second airbag of 42-, the 4th valve of 43-, the 5th valve of 44-, the second gas cylinder of 5-, 6- ratio conversion head, 61- plenum chamber, 62- air inlet Pipe, 63- escape pipe, 64- pressing plate, 641- jack, 642- location hole, 7- spring.
Specific embodiment
As shown in Figure 1, a kind of standard gas preparation device includes matching gas cylinder 1, the first appendix 2, the first gas cylinder 3, second Appendix 4 and the second gas cylinder 5, described matching are provided with piston in gas cylinder 1, described matching is provided with 11 He of air hatch on gas cylinder 1 Scale.
As shown in figure 13, the cecum (inlet end) with gas cylinder 1 is provided with the first air inlet 12 and the second air inlet 13, First air inlet 12 is connected by the first appendix 2 with first gas cylinder 3, and second air inlet 13 passes through Second appendix 4 is connected with second gas cylinder 5.
As shown in Figure 1, being respectively arranged with the first port 21 and second on first appendix 2 and the second appendix 4 Port 41 is respectively arranged on first port 21 and the second port 41 and is made 22 He of the first airbag by matter soft material Second airbag 42.
As shown in Figure 1, gas side and the air inlet side out on first appendix 2 positioned at first airbag 22 are set respectively It is equipped with the first valve 23 and the second valve 24, is provided with third valve 211 on first port 21.Second gas transmission Gas side and air inlet side out on pipe 4 positioned at second airbag 42 are respectively arranged with the 4th valve 43 and the 5th valve 44.It is described The first appendix 2 on be located at first valve 23 and be provided between gas cylinder 1 gas-liquid switching mechanism 27 and with it is described The feed liquor bottle 26 that is connected of the first appendix 2, be provided with piston in the feed liquor bottle 26.
As a kind of specific embodiment, as shown in Figure 4 and Figure 5, inlet tube is provided on first appendix 2 25, and be connected between the inlet tube 25 and the feed liquor bottle 26 by screw thread, the cecum setting of the feed liquor bottle 26 There is liquid outlet 261, inlet corresponding with the liquid outlet 261 is provided on the tube wall of first appendix 2.
As shown in Fig. 2, Figure 10 and Figure 11, the gas-liquid switching mechanism 27 includes being set on first appendix 2 U-shaped guide plate 271, and the opening of the guide plate 271 is towards first appendix 2.First gas transmission It is located in the guide plate 271 on pipe 2 and is provided with the axis arc notch parallel with the guide plate 271, and the arc The axis co-planar of the liquid outlet 261 of the axis of v notch v and the feed liquor bottle 26.A sliding is provided in the guide plate 271 Block 272, and the medial surface (using the one side close to the first appendix 2 as medial surface) of the sliding shoe 272 is in and the arc The arcwall face that v notch v matches, the lateral surface of the sliding shoe 272 are adjacent to the web of the guide plate 271.The sliding shoe 272 one end is provided with arc groove 2722, the internal diameter phase of the diameter of the arc groove 2722 and first appendix 2 Together, and the axis of the arc groove 2722 is parallel with the axis of first appendix 2.The lateral surface of the sliding shoe 272 On be provided with a push rod 2721, the strip hole for accommodating the push rod 2721 is provided on the web of the guide plate 271 2711。
As shown in Figure 3 and Figure 4, when raw material is gas, the push rod 2721 is pushed under the strip hole 2711 End, the axis of the arc groove 2722 of described 272 one end of sliding shoe is overlapped with the axis of first appendix 2 at this time, the two Form the unobstructed integral conduit of inner wall.
As shown in Figure 6 and Figure 7, when raw material is liquid, the push rod 2721 is pushed into the upper of the strip hole 2711 End, the other end of the sliding shoe 272 is located in first appendix 2 at this time, and common in first appendix 2 Form aditus laryngis.When air-flow is by aditus laryngis, negative pressure formed here, so that it is defeated that the raw material in feed liquor bottle 26 is attracted to first In tracheae 2, and spirit is followed to spurt into in gas cylinder 1.
Further, for gas raw material, when preparing different calibrating gas, the raw material of use is different, raw material It is different with the ratio of spirit.In addition, for same raw material, it is former when the concentration difference for the calibrating gas for needing to prepare Expect also to be different with the ratio of spirit.
For this problem, for operating easily, as shown in Fig. 2, second appendix 4 and with being set between gas cylinder 1 It is equipped with ratio conversion head 6.
As shown in figure 12, the ratio conversion head 6 includes a plenum chamber 61 cylindrical, and the plenum chamber 61 is One hollow shell.The side of the plenum chamber 61 is provided with air inlet pipe 62, and the other side of the plenum chamber 61 is provided with multiple The escape pipe 63 of different-diameter, and the diameter of the air inlet pipe 62 is more than or equal to the diameter of the maximum escape pipe 63 of diameter.It is described Air inlet pipe 62 and second appendix 4 be tightly connected, during multiple escape pipes 63 with the axis of plenum chamber 61 are Mandrel is along the circumferential direction uniformly distributed.The free end of the escape pipe 63 is provided with pressing plate 64, it is preferred that the pressing plate 64 is in circle Shape, and diameter is identical as the diameter of the plenum chamber 61.It is provided with jack 641 on the pressing plate 64, and the jack 641 The arrangement center overlapping of axles of axis and multiple escape pipes 63.As shown in figure 13, it is described be provided on gas cylinder 1 with it is described Shaft 14 from jack 641 to cooperation, and the shaft 14 to second air inlet 13 distance be equal to the jack 641 arrive The distance of escape pipe 63.The free end of the shaft 14 is provided with limit plate 141.As shown in Figure 6 and Figure 8, the shaft 14 On be arranged with spring 7, one end of the spring 7 is resisted against on the pressing plate 64, and the other end of the spring 7 is resisted against described Limit plate 141 on.
Further, in order to guarantee leakproofness, the pressing plate 64 is provided with gasket close to the side with gas cylinder 1.
Further, in order to guarantee that escape pipe 63 rushes together completely with the second air inlet 13 on gas cylinder 1, mistake is avoided the occurrence of The phenomenon that position, is provided with location hole 642 as shown in Fig. 9, Figure 12 and Figure 13 on the pressing plate 64, and the location hole 642 Quantity is identical as the quantity of the escape pipe 63, and position corresponds, and described matching is provided with and the location hole on gas cylinder 1 642 positioning protrusion 15 matched.
As a kind of specific embodiment, location hole 642 described in the present embodiment is set to the interior of the escape pipe 63 Side, and it is along the circumferential direction uniformly distributed by axis of central axis.
Operating process:
1, when raw material is gas
First, the connection between air inlet pipe 62 and the second appendix 4 is disconnected, and rotate ratio conversion head 6 as needed, adjusted The ratio of whole first appendix 2 and the sectional area of escape pipe 63, then connects air inlet pipe 62 and the second escape pipe 63.
Second, adjustment gas-liquid switching mechanism 27 makes the sliding shoe 272 be in position as shown in Figure 3, i.e., the next.
Third closes the first valve 23 and the 4th valve 43, opens the second valve 24, third valve 211 and the 5th valve 44, the first gas cylinder 3 and the second gas cylinder 5 are inflated into the first airbag 22 and the second airbag 42 respectively, until first airbag 22 soon turgors, but turgor not yet, to guarantee the gas pressure in airbag for an atmospheric pressure.
4th, the second valve 24 and the 5th valve 44 are closed, opens the first valve 23 and the 4th valve 43, and match to pulling Piston in gas cylinder 1.
Since the caliber of the first appendix 2 and escape pipe 63 is arranged according to a certain percentage, and 22 He of the first airbag The pressure of gas in second airbag 42 is equal, is all an atmospheric pressure, so enter is with the gas ratio in gas cylinder 1 Certain, so that the calibrating gas for needing ratio is prepared, it can be with being used while making, and the volume prepared can be controlled arbitrarily.
2, when raw material is liquid
First, feed liquor bottle 26 is removed, and extract the liquid charging stock of certain volume, is then tightened on inlet tube 25.
Second, adjustment gas-liquid switching mechanism 27 makes the sliding shoe 272 be in position as shown in Figure 7, i.e., upper.
Third closes third valve 211, the 4th valve 43 and the 5th valve 44, opens the first valve 23 and the second valve 24, the gas in the first gas cylinder 3 is entered by the first appendix 2 in gas cylinder 1.Air-flow in first appendix 2 is passing through When throat location, since sectional area becomes smaller, negative pressure can be generated at throat location, so that the liquid charging stock in feed liquor bottle 26 be inhaled It guides in the first appendix 2, and follows jet-impingement to in gas cylinder 1.Until the liquid in the feed liquor bottle 26 is pressed completely Enter in the first appendix 2.
4th, the first valve 23 to be closed, third valve 211 is opened, the first gas cylinder 3 is inflated into the first airbag 22, until First airbag 22 soon turgor, but turgor not yet.
5th, adjustment gas-liquid switching mechanism 27 makes the sliding shoe 272 be in position as shown in Figure 3, i.e., the next.
6th, the second valve 24 is closed, the first valve 23 is opened, and pull with the piston in gas cylinder 1, until reaching needs Volume.

Claims (9)

1. a kind of standard gas preparation device, it is characterised in that: including matching gas cylinder, described matching in gas cylinder is provided with piston, institute Matching for stating is provided with air hatch and scale on gas cylinder;
First air inlet with gas cylinder is connected by the first appendix with the first gas cylinder, second air inlet with gas cylinder It is connected by the second appendix with the second gas cylinder;
The first port and the second port, first port are respectively arranged on first appendix and the second appendix With the first airbag and the second airbag are respectively arranged on the second port;
Go out gas side and air inlet side on first appendix positioned at first airbag are respectively arranged with the first valve and the Two valves are provided with third valve on first port;
Go out gas side and air inlet side on second appendix positioned at second airbag are respectively arranged with the 4th valve and the Five valves.
2. a kind of standard gas preparation device according to claim 1, it is characterised in that: set on first appendix The feed liquor bottle for being equipped with gas-liquid switching mechanism and being connected with first appendix is provided with piston in the feed liquor bottle.
3. a kind of standard gas preparation device according to claim 2, it is characterised in that: the gas-liquid switching mechanism packet The U-shaped guide plate being set on first appendix is included, is located in the guide plate on first appendix It is provided with arc notch, a sliding shoe, and the medial surface of the sliding shoe and the arc are provided in the guide plate Notch matches, and one end of the sliding shoe is provided with diameter arc groove identical as the first gas transmission bore, and the arc The axis of groove is parallel with the axis of the first appendix.
4. a kind of standard gas preparation device according to claim 3, it is characterised in that: set on first appendix It is equipped with inlet tube, and is connected between the inlet tube and the feed liquor bottle by screw thread, the cecum of the feed liquor bottle is set It is equipped with liquid outlet, inlet corresponding with the liquid outlet is provided on the tube wall of first appendix.
5. a kind of standard gas preparation device according to claim 4, it is characterised in that: the axis of the arc notch with The axis co-planar of the liquid outlet.
6. a kind of standard gas preparation device according to claim 3, it is characterised in that: on the lateral surface of the sliding shoe It is provided with a push rod, the strip hole for accommodating the push rod is provided on the web of the guide plate.
7. a kind of standard gas preparation device according to claim 1, it is characterised in that: second appendix and match Proportional conversion head is set between gas cylinder, the ratio conversion head includes plenum chamber, the side of the plenum chamber be provided with into Tracheae, the other side of the plenum chamber are provided with multiple along the circumferential direction uniformly distributed escape pipes, and the diameter of the air inlet pipe More than or equal to the maximum gauge of escape pipe, the free end of the escape pipe is provided with pressing plate, is provided with axis on the pressing plate The jack to coincide with escape pipe arrangement central axis, described matches the shaft being provided on gas cylinder with the jack to cooperation, And the distance of the shaft to second air inlet is equal to the jack to the distance of escape pipe, the free end of the shaft sets It is equipped with limit plate, is arranged with spring between pressing plate and limit plate in the shaft.
8. a kind of standard gas preparation device according to claim 7, it is characterised in that: be provided on the pressing plate close Packing.
9. a kind of standard gas preparation device according to claim 7, it is characterised in that: be provided on the pressing plate with The one-to-one location hole of the escape pipe, described matching are provided with the convex matched with the location hole on gas cylinder It rises.
CN201910249099.1A 2019-03-29 2019-03-29 Standard gas preparation device Active CN109865440B (en)

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CN109865440B CN109865440B (en) 2021-08-31

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237874B (en) * 1989-10-09 1993-08-25 Johan David Raal Preparation of standard gas mixtures
CN201333383Y (en) * 2008-12-16 2009-10-28 南京特种气体厂有限公司 Gas preparation device for preparing mixed gas including low-pressure liquid gas component
CN203329640U (en) * 2013-06-27 2013-12-11 江苏物联网研究发展中心 Standard gas mixing device for gas testing system
WO2014065233A1 (en) * 2012-10-22 2014-05-01 大陽日酸株式会社 Method and device for supplying hydrogen-selenide mixed gas
EP3098601A1 (en) * 2015-05-26 2016-11-30 Politechnika Gdanska A system for producing reference gas mixtures, especially smell ones
CN205850772U (en) * 2016-08-02 2017-01-04 上海神开气体技术有限公司 A kind of Large Copacity gas cylinder calibrating gas preparation facilities
CN107132105A (en) * 2017-06-22 2017-09-05 南瑞通用电气智能监测诊断(武汉)有限公司 A kind of standard gas preparation device
CN107677630A (en) * 2017-09-22 2018-02-09 郑州东辰科技有限公司 A kind of Tail gas measuring remote sensing instrument calibration method and calibrating installation
CN108970429A (en) * 2018-06-15 2018-12-11 盛密科技(上海)有限公司 A kind of air distributing device and air distributing method of low concentration calibrating gas
CN208612210U (en) * 2018-06-15 2019-03-19 盛密科技(上海)有限公司 A kind of low concentration standard gas preparation device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237874B (en) * 1989-10-09 1993-08-25 Johan David Raal Preparation of standard gas mixtures
CN201333383Y (en) * 2008-12-16 2009-10-28 南京特种气体厂有限公司 Gas preparation device for preparing mixed gas including low-pressure liquid gas component
WO2014065233A1 (en) * 2012-10-22 2014-05-01 大陽日酸株式会社 Method and device for supplying hydrogen-selenide mixed gas
CN203329640U (en) * 2013-06-27 2013-12-11 江苏物联网研究发展中心 Standard gas mixing device for gas testing system
EP3098601A1 (en) * 2015-05-26 2016-11-30 Politechnika Gdanska A system for producing reference gas mixtures, especially smell ones
CN205850772U (en) * 2016-08-02 2017-01-04 上海神开气体技术有限公司 A kind of Large Copacity gas cylinder calibrating gas preparation facilities
CN107132105A (en) * 2017-06-22 2017-09-05 南瑞通用电气智能监测诊断(武汉)有限公司 A kind of standard gas preparation device
CN107677630A (en) * 2017-09-22 2018-02-09 郑州东辰科技有限公司 A kind of Tail gas measuring remote sensing instrument calibration method and calibrating installation
CN108970429A (en) * 2018-06-15 2018-12-11 盛密科技(上海)有限公司 A kind of air distributing device and air distributing method of low concentration calibrating gas
CN208612210U (en) * 2018-06-15 2019-03-19 盛密科技(上海)有限公司 A kind of low concentration standard gas preparation device

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