CN102914487B - Trace gas metering device used for grading materials capable of sending out combustible gases in presence of water - Google Patents
Trace gas metering device used for grading materials capable of sending out combustible gases in presence of water Download PDFInfo
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- CN102914487B CN102914487B CN201210399851.9A CN201210399851A CN102914487B CN 102914487 B CN102914487 B CN 102914487B CN 201210399851 A CN201210399851 A CN 201210399851A CN 102914487 B CN102914487 B CN 102914487B
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Abstract
The invention relates to a trace gas metering device used for grading materials capable of sending out combustible gases in the presence of water. A water injection pipe is inserted into a reaction flask through a bottle plug, one end of a gas guide pipe is inserted into the reaction flask through the bottle plug, the other end of the gas guide pipe is sequentially connected with a micro pressure sensor, a gas suction control electromagnetic valve and a tee joint, an exhaust control electromagnetic valve is connected into a gas collection bag, the other port of the tee joint is respectively communicated with gas chambers of a suction and exhaust metering pump A and a suction and exhaust metering pump B through another gas guide pipe, a connecting rod is fixed in a locking device, two ends of the connecting rod are respectively fixed to piston rods of the suction and exhaust metering pump A and the suction and exhaust metering pump B, a synchronization belt is sleeved on a synchronization wheel A, the locking device and a synchronization wheel B, the synchronization wheel A and the synchronization wheel B tension the synchronization belt and then are fixed, a step motor is connected with the synchronization wheel B, and a micro pressure sensor is connected with a control unit. The trace gas metering device has the beneficial effects of simpleness and convenience in operation, and capabilities of accurately measuring the total generation quantity of gas and measuring the generation rate of the gas.
Description
Technical field
The present invention relates to a kind of gas dosing device, particularly a kind of minimum gas measuring apparatus of emitting the classification of inflammable gas material for meeting water.
Background technology
In a lot of chemical reactions, can emit gas, the speed of weighing chemical reaction has a lot of parameters, such as the climbing speed of temperature of reaction, and for example certain chemical reaction can be emitted a large amount of gas, Cucumber can be emitted gas after meeting water, the climbing speed of closed container internal pressure, be an important indicator weighing its reaction velocity, therefore can emit reaction velocity, the danger etc. of the chemical reaction of gas for accurate evaluation, need to produce in these reactions of Measurement accuracy speed and the gas flow of gas.
At present, in the United Nations's " about recommendation of Dangerous Goods Transport ", GB6944 " dangerous cargo classification and numbering ", all stipulated to meet water and emitted the fire risk stage division of inflammable gas material.GA/T 536.4 " classification of inflammable and explosive dangerous goods fire risk and test method the 4th part meet water emit inflammable gas material classification test method " in specified in more detail experimental technique and the experimental provision of its fire risk classification.Emit in the classification test of inflammable gas material fire risk at chance water, the gas flow of generation is less comparatively speaking, for the measurement of minimum gas and rate of gas release, has at present a small amount of external product can meet measuring requirement, but expensive.In laboratory, gas dosing is adopted to drainage conventionally.Simple and practical, but for producing the less experiment of gas, measured data are not accurate enough.And very difficult Measurement accuracy produces the speed of gas.
Summary of the invention
In view of the needs of real work, the invention provides a kind of simple in structure, easy for operation, minimum gas measuring apparatus that precision is high, not only can the total burst size of mensurated gas composition but also can mensurated gas composition rate of release.Specifically technical scheme is, emits the minimum gas measuring apparatus of inflammable gas material classification for meeting water, comprises water injection pipe, micropressure sensor, air-breathing control solenoid valve, threeway, exhaust control solenoid valve, gas collection air bag, A synchronizing wheel, A suction and discharge volume pump, wireway, connecting rod, locking device, Timing Belt, B synchronizing wheel, stepper motor, B suction and discharge volume pump, reaction flask, is characterized in that: water injection pipe is in bottle stopper inserts reaction flask, and wireway one end is in bottle stopper inserts reaction flask, the other end is connected micropressure sensor successively, air-breathing control solenoid valve, threeway, in exhaust control solenoid valve access gas collection air bag, the another port of threeway with another root wireway respectively with A suction and discharge volume pump, B suction and discharge meterings air chamber of pump communicates, connecting rod be fixed in locking device and two ends respectively with A suction and discharge volume pump, the piston rod of B suction and discharge volume pump is fixed together, and Timing Belt is sleeved on A synchronizing wheel, on locking device and B synchronizing wheel, fixing after A synchronizing wheel and B synchronizing wheel tension Timing Belt, stepper motor and B synchronizing wheel link together, and micropressure sensor is connected with control module.
Its principle is to make A by wireway, B suction and discharge volume pump is connected, first open air-breathing control solenoid valve 3, close exhaust control solenoid valve 5, make A suction volume pump and reaction flask UNICOM, in the time having γ-ray emission in reaction flask, internal pressure will increase, micropressure sensor detects this variation, rotate a fixed angle by control system Driving Stepping Motor, the synchronous A that drives simultaneously, B suction and discharge volume pump piston moves a fixed range, make reaction flask pressure decreased, so repeatedly, make pressure get back to initial value, the gas producing is collected into A, in B suction and discharge volume pump, Δ V=S × L. S-A such as the gas flow that angle of the every rotation of stepper motor is collected, B suction and discharge volume pump total sectional area, L-A, displacement corresponding to B suction and discharge volume pump piston, close air-breathing control solenoid valve, open exhaust control solenoid valve, stepper motor reverse rotation, by A, the gas of collecting in B suction and discharge volume pump is discharged in gas collection air bag.Gas production rate can obtain by the rate calculations of A, B suction and discharge volume pump piston movement.
The invention has the beneficial effects as follows simple, convenient, can Accurate Determining γ-ray emission total amount, the speed again can mensurated gas composition producing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the coupling part of device all adopts polytetrafluoro pad to connect, water injection pipe 1 is in bottle stopper inserts reaction flask 16, wireway 9 one end are in bottle stopper inserts reaction flask 16, the other end is connected micropressure sensor 2 successively, air-breathing control solenoid valve 3, threeway 4, exhaust control solenoid valve 5 accesses in gas collection air bag 6, the another port of threeway 4 with another root wireway 9 respectively with A suction and discharge volume pump 8, the air chamber of B suction and discharge volume pump 15 communicates, connecting rod 10 be fixed in locking device 11 and two ends respectively with A suction and discharge volume pump 8, the piston rod of B suction and discharge volume pump 15 is fixed together, Timing Belt 12 is sleeved on A synchronizing wheel 7, on locking device 11 and B synchronizing wheel 13, it is rear fixing that A synchronizing wheel 7 and B synchronizing wheel 13 are strained Timing Belt 12, stepper motor 14 links together with B synchronizing wheel 13, micropressure sensor 2 is connected with control module.
When concrete operations:
The material of [1] chance water being emitted to inflammable gas is put into reaction flask 16;
[2] pass through water injection pipe 1 to a small amount of clear water of the interior injection of reaction flask 16;
[3] after reaction starts, reaction flask 16 can produce gas, and at this moment micropressure sensor 2 can detect pressure signal;
[4] control module detects after pressure signal, open air-breathing control solenoid valve 3, close exhaust control solenoid valve 5, can drive the air-breathing piston movement in A suction and discharge volume pump 8, B suction and discharge volume pump 15 by control step motor 14 simultaneously simultaneously, the gas of reaction flask 16 interior generations is siphoned away;
[5] when the piston movement in A suction and discharge volume pump 8, B suction and discharge volume pump 15 is to maximum position, open exhaust control solenoid valve 5, close air-breathing control solenoid valve 3, piston in air-breathing, exhaust volume pump 8,15 moves upward, and gas is entered in gas collection air bag 6;
[6] control module can pass through times of exercise and the movement velocity of A suction and discharge volume pump 8, B suction and discharge volume pump 15 pistons, calculates the total amount that discharges gas and the speed that discharges gas.
Claims (1)
1. a minimum gas measuring apparatus of emitting the classification of inflammable gas material for meeting water, comprises water injection pipe (1), micropressure sensor (2), air-breathing control solenoid valve (3), threeway (4), exhaust control solenoid valve (5), gas collection air bag (6), A synchronizing wheel (7), A suction and discharge volume pump (8), wireway (9), connecting rod (10), locking device (11), Timing Belt (12), B synchronizing wheel (13), stepper motor (14), B suction and discharge volume pump (15), reaction flask (16), is characterized in that: water injection pipe (1) is in bottle stopper inserts reaction flask (16), and wireway (9) one end is in bottle stopper inserts reaction flask (16), the other end is connected micropressure sensor (2) successively, air-breathing control solenoid valve (3), threeway (4), in exhaust control solenoid valve (5) access gas collection air bag (6), the another port of threeway (4) with another root wireway (9) respectively with A suction and discharge volume pump (8), the air chamber of B suction and discharge volume pump (15) communicates, connecting rod (10) be fixed in locking device (11) and two ends respectively with A suction and discharge volume pump (8), the piston rod of B suction and discharge volume pump (15) is fixed together, and Timing Belt (12) is sleeved on A synchronizing wheel (7), locking device (11) and B synchronizing wheel (13) are upper, and A synchronizing wheel (7) is rear fixing with B synchronizing wheel (13) tension Timing Belt (12), and stepper motor (14) links together with B synchronizing wheel (13), and micropressure sensor (2) is connected with control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399851.9A CN102914487B (en) | 2012-10-19 | 2012-10-19 | Trace gas metering device used for grading materials capable of sending out combustible gases in presence of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399851.9A CN102914487B (en) | 2012-10-19 | 2012-10-19 | Trace gas metering device used for grading materials capable of sending out combustible gases in presence of water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102914487A CN102914487A (en) | 2013-02-06 |
| CN102914487B true CN102914487B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210399851.9A Expired - Fee Related CN102914487B (en) | 2012-10-19 | 2012-10-19 | Trace gas metering device used for grading materials capable of sending out combustible gases in presence of water |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729955B (en) * | 2014-12-31 | 2017-09-05 | 谱尼测试集团股份有限公司 | A kind of collection of gas and generation rate determination method |
| CN106596327A (en) * | 2016-12-19 | 2017-04-26 | 浙江出入境检验检疫局检验检疫技术中心 | Water meeting gas discharge tester and use method thereof |
| CN111781090A (en) * | 2019-04-04 | 2020-10-16 | 应急管理部化学品登记中心 | Test device for testing gas velocity of substance in water and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413862A (en) * | 2008-11-11 | 2009-04-22 | 中国石油化工股份有限公司 | Apparatus for testing velocity of inflammable gas given out by substance when contacting with water |
| CN201368838Y (en) * | 2008-12-25 | 2009-12-23 | 张少岩 | Gas collecting and metering system |
| CN102109448A (en) * | 2011-01-10 | 2011-06-29 | 王利兵 | Tester for measuring degassing rate of dangerous chemical under condition of meeting water |
| CN202837140U (en) * | 2012-10-19 | 2013-03-27 | 公安部天津消防研究所 | Trace gas metering device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58106439A (en) * | 1981-12-21 | 1983-06-24 | Idemitsu Kosan Co Ltd | Quickly measuring method for grown quantity of cancer |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413862A (en) * | 2008-11-11 | 2009-04-22 | 中国石油化工股份有限公司 | Apparatus for testing velocity of inflammable gas given out by substance when contacting with water |
| CN201368838Y (en) * | 2008-12-25 | 2009-12-23 | 张少岩 | Gas collecting and metering system |
| CN102109448A (en) * | 2011-01-10 | 2011-06-29 | 王利兵 | Tester for measuring degassing rate of dangerous chemical under condition of meeting water |
| CN202837140U (en) * | 2012-10-19 | 2013-03-27 | 公安部天津消防研究所 | Trace gas metering device |
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Inventor after: Zhang Wang Inventor after: Li Ye Inventor after: Zhang Yuxian Inventor after: Liu Yongmei Inventor after: Ren Changxing Inventor after: Lv Dong Inventor after: Wang Jie Inventor after: Zhang Xin Inventor after: Guan Changyong Inventor before: Zhang Wang Inventor before: Li Ye Inventor before: Zhang Yuxian Inventor before: Ren Changxing Inventor before: Lv Dong Inventor before: Wang Jie Inventor before: Zhang Xin Inventor before: Wu Wei Inventor before: Guan Changyong |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG WANG LI YE ZHANG YUXIAN REN CHANGXING LV DONG WANG JIE ZHANG XIN WU WEI GUAN CHANGYONG TO: ZHANG WANG LI YE ZHANG YUXIAN LIU YONGMEI REN CHANGXING LV DONG WANG JIE ZHANG XIN GUAN CHANGYONG |
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