CN109425711A - A kind of detection device and system of gas content - Google Patents
A kind of detection device and system of gas content Download PDFInfo
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- CN109425711A CN109425711A CN201710790713.6A CN201710790713A CN109425711A CN 109425711 A CN109425711 A CN 109425711A CN 201710790713 A CN201710790713 A CN 201710790713A CN 109425711 A CN109425711 A CN 109425711A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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Abstract
The present invention relates to a kind of detection device of gas content and systems, and wherein detection system includes the first and second disengaging gas storage device and absorber；First and second disengaging gas storage device is respectively equipped with the first air inlet/outlet, the second air inlet/outlet；Absorber includes an air inlet and a gas outlet；Gas transmission line and control valve are connected between first air inlet/outlet, the second air inlet/outlet and air inlet, gas outlet；Gas transmission line and control valve are used for: when the first air inlet/outlet is connected with air inlet, the second air inlet/outlet is connected with gas outlet；When the first air inlet/outlet is connected with gas outlet, the second air inlet/outlet is connected with air inlet.The invention avoids the mixed gas for being mixed with gas to be detected disposably to pass through absorber, the one into one of gas storage device, which is passed in and out, by two moves back work, quantitative mixed gas can be repeated to enter in absorber, absorber can be made to absorb the gas to be detected in mixed gas to the maximum extent, improve the measurement accuracy of gas to be detected.
Description
Technical field
The present invention relates to a kind of detection device of gas content and systems, belong to technical field of analytical chemistry.
Background technique
In petroleum geology development process, there is a large amount of gas, universal sulfide hydrogen in gas, hydrogen sulfide is a kind of
Extremely toxic substance, due to the difference of region, the content of hydrogen sulfide is had differences.In order to obtain the content number of the hydrogen sulfide in gas
According to, often through quantitative gas with chemical reaction method tested, and by various reactions consume obtain corresponding number
According to as a result, calculated again with corresponding calculation formula, the content data of hydrogen sulfide has just been obtained.
Existing to use equipment for absorption plant, working method is that a head tube line of absorption plant is connected to admission line,
Control valve is opened, gas is allowed to enter absorber by pipeline with quantitative flow velocity, absorber is cylindrical: long 230mm, internal diameter
23mm, the air inlet of absorber is in bottom, and the included one piece of glass orifice plate of absorber, the height of orifice plate to air inlet is 50mm, hole
Having 20 diameter ranges on plate is the aperture of 0.5-1mm, and the gas of input can be resolved into tiny bubble by aperture, in absorber
Chamber is equipped with quantitative chemical solution, and for gas during passing through absorber, chemical solution passes through the hydrogen sulfide in adsorbed gas
It is chemically reacted, the residual gas reacted enters flowmeter metering discharge by the top gas outlet of absorber, due to not
The content of hydrogen sulfide is different in same gas, so that it is also different to the continuous input quantity of gas in actual operation, in order to obtain
Data with high accuracy, identical gasmetry need work more than two times to complete, and are to determine sulphur in gas for the first time
Change hydrogen provisional value, is to be measured according to provisional value using corresponding gas input for the second time.
In the prior art, during continuous work, the gas of input absorber inner cavity is disposably to pass through, due to gas
Into being air bubble-shaped in the chemical solution of absorber inner cavity, part hydrogen sulfide is with the residue reacted in the bubble necessarily made in this way
Gas is discharged together, since the solution in absorber is with the successive reaction with the hydrogen sulfide in input gas, in the solution made
Reactive material content gradually decrease, and the gas flow inputted in absorber remains unchanged, the reaction meeting of solution in absorber
Lower and lower, the hydrogen sulfide content in gas being discharged so is gradually got higher, thus be discharged amount more high measurement precision more
It is low.
In addition, mainly preparing solution in preparing various chemical reagent with water, since the freezing point of water is zero degree, in this way
There is certain requirement to test environment；Gas is acquired when passing through absorber, gas flow per minute is low at 200-300 milliliters
In 0.5% content gas collecting amount in 20-100 liter, the time used at 80-400 minutes, gas content and gases used amount at
Inverse ratio, and much testing is to carry out in winter, often can not then be worked normally under subzero 10 degree or more of low temperature environment.
Summary of the invention
The object of the present invention is to provide a kind of detection device of gas content and systems, quantitative in the prior art for solving
Gas, which disposably passes through absorber, leads to this inaccurate problem of the content detection of gas to be detected.
In order to solve the above technical problems, the present invention provides a kind of detection device of gas content, including following scheme:
Detection device scheme one: gas storage device (2) and defeated including the first disengaging gas storage device (1), the second disengaging
Gas pipeline, the gas transmission line include the first connection mouth being correspondingly connected with for the air inlet with absorber, gas outlet, second
Port；First disengaging gas storage device (1) is equipped with the first air inlet/outlet, and second disengaging gas storage device (2) is equipped with
Second air inlet/outlet；Control valve is provided in the gas transmission line, the gas transmission line and control valve are used for: when first passes in and out gas
When mouth is connected with the first connection mouth, the second air inlet/outlet is connected with the second connection mouth, so that in the first disengaging gas storage device (1)
Gas by absorber to second disengaging gas storage device (2) flow；When the first air inlet/outlet is connected with the second connection mouth,
Second air inlet/outlet is connected with the first connection mouth, so that the gas in the second disengaging gas storage device (2) is by absorber to the
One disengaging gas storage device (1) flowing；The detection device further includes for taking the admission line of gas (11), institute from air delivering pipeline
Admission line (11) is stated to be connected with the gas transmission line.
Detection device scheme two: on the basis of detection device scheme one, it is described first disengaging gas storage device (1) and/
Or second disengaging gas storage device (2) include piston cylinder (102), telescopic piston (104), piston shaft (105) and driving piston
Axis (105) moves back and forth the driving mechanism (3) to realize disengaging airway dysfunction.
Detection device scheme three: on the basis of detection device scheme two, the driving mechanism (3) includes motor, institute
The output end for stating motor connects a swivel bearing (106) being threaded through on the piston shaft (105), the swivel bearing
(106) turbine and worm mechanism is formed with the piston shaft (105).
Detection device scheme four: on the basis of detection device scheme three, the driving mechanism (3) further includes and the work
Fill in the spindle nose rocking handle (107) of axis (105) transmission connection.
Detection device scheme five, six, seven, eight: described defeated respectively on the basis of detection device scheme one, two, three, four
Gas pipeline and control valve include: that first air inlet/outlet is used to connect the first connection mouth by the first gas transmission line (7),
By the second gas transmission line (8) for connecting the second connection mouth；First gas transmission line (7) is equipped with the first control
Valve, second gas transmission line (8) are equipped with the second control valve；Second air inlet/outlet is used by third gas transmission line (9)
In connecting the first connection mouth, by the 4th gas transmission line (10) for connecting the second connection mouth；The third gas transmission
Pipeline (9) is equipped with third control valve, and the 4th gas transmission line (10) is equipped with the 4th control valve.
Detection device scheme nine, ten, 11,12: respectively on the basis of detection device scheme one, two, three, four, institute
It states gas transmission line and control valve includes: two position four-way valve (13), four valve ports of two position four-way valve (13) are for dividing
First air inlet/outlet, the second air inlet/outlet, the first connection mouth and the second connection mouth are not connected.
Detection device scheme 13,14,15,16: respectively on the basis of detection device scheme one, two, three, four
On, flow instrument (12) and air intake control valve are provided in the admission line (11).
The present invention also provides a kind of detection systems of gas content, including following scheme:
Detection system scheme one: it including the first disengaging gas storage device (1), the second disengaging gas storage device (2) and inhales
It receives device (4)；First disengaging gas storage device (1) is equipped with the first air inlet/outlet, and second disengaging gas storage device (2) is set
There is the second air inlet/outlet；The absorber (4) includes an air inlet (5) and a gas outlet (6)；The first disengaging gas
Mouth, the second air inlet/outlet and the air inlet (5), gas outlet are connected with gas transmission line and control valve between (6)；The appendix
Line and control valve are used for: when the first air inlet/outlet is connected with air inlet (5), the second air inlet/outlet is connected with gas outlet (6), with
Flow the gas in the first disengaging gas storage device (1) to the second disengaging gas storage device (2) by absorber (4)；When
When one air inlet/outlet is connected with gas outlet (6), the second air inlet/outlet is connected with air inlet (5), so that the second disengaging gas storage dress
The gas set in (2) is flowed by absorber (4) to the first disengaging gas storage device (1)；The detection system further include for from
The admission line (11) of gas is taken in air delivering pipeline, the admission line (11) is connected with the gas transmission line.
Detection system scheme two: on the basis of detection system scheme one, it is described first disengaging gas storage device (1) and/
Or second disengaging gas storage device (2) include piston cylinder (102), telescopic piston (104), piston shaft (105) and driving piston
Axis (105) moves back and forth the driving mechanism (3) to realize disengaging airway dysfunction.
Detection system scheme three: on the basis of detection system scheme two, the driving mechanism (3) includes motor, institute
The output end for stating motor connects a swivel bearing (106) being threaded through on the piston shaft (105), the swivel bearing
(106) turbine and worm mechanism is formed with the piston shaft (105).
Detection system scheme four: on the basis of detection system scheme three, the driving mechanism (3) further includes and the work
Fill in the spindle nose rocking handle (107) of axis (105) transmission connection.
Detection system scheme five, six, seven, eight: described defeated respectively on the basis of detection system scheme one, two, three, four
Gas pipeline and control valve include: that first air inlet/outlet is used to connect the first connection mouth by the first gas transmission line (7),
By the second gas transmission line (8) for connecting the second connection mouth；First gas transmission line (7) is equipped with the first control
Valve, second gas transmission line (8) are equipped with the second control valve；Second air inlet/outlet is used by third gas transmission line (9)
In connecting the first connection mouth, by the 4th gas transmission line (10) for connecting the second connection mouth；The third gas transmission
Pipeline (9) is equipped with third control valve, and the 4th gas transmission line (10) is equipped with the 4th control valve.
Detection system scheme nine, ten, 11,12: respectively on the basis of detection system scheme one, two, three, four, institute
It states gas transmission line and control valve includes: two position four-way valve (13), four valve ports of two position four-way valve (13) are for dividing
First air inlet/outlet, the second air inlet/outlet, the first connection mouth and the second connection mouth are not connected.
Detection system scheme 13,14,15,16: respectively on the basis of detection system scheme one, two, three, four
On, flow instrument (12) and air intake control valve are provided in the admission line (11).
The beneficial effects of the present invention are:
The invention avoids the mixed gas for being mixed with gas to be detected disposably to pass through absorber, is deposited by two disengaging gas
The one into one of storage device moves back work, enters quantitative mixed gas in absorber repeatedly, to make absorber to the maximum extent
The gas to be detected in mixed gas is absorbed, the measurement accuracy of gas to be detected is improved.
Further, living using driving mechanism driving two by setting piston mechanism for two disengaging gas storage devices
The movement direction of piston shaft of mechanism is filled on the contrary, one outlet of an i.e. air inlet, during effectively increasing gasmetry to be detected
Automatization level, avoid manual operation.
In addition, the mixed gas for being mixed with gas to be detected first can be collected disengaging gas when being measured in bad weather and deposited
In storage device, enters back into and adapt to measure in environment, the measurement request under various environmental conditions can be met.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the detection system first embodiment of gas content of the present invention；
Fig. 2 is the structural schematic diagram of the detection system second embodiment of gas content of the present invention；
Fig. 3 is into and out the structural schematic diagram of gas storage device.
Specific embodiment
With reference to the accompanying drawing and specific embodiment detailed description of the preferred embodiments.
The structural schematic diagram of the detection system of gas content of the present invention is as shown in Figure 1, include gasometry system and absorption
Apparatus system.Wherein, gasometry system is made of disengaging gas storage device 1, disengaging gas storage device 2 and driving mechanism 3, the
One disengaging gas storage device 1 is equipped with the first air inlet/outlet, and the second disengaging gas storage device 2 is equipped with the second air inlet/outlet, the driving
Mechanism 3 specifically uses motor.Absorption plant system includes absorber 4, and absorber 4 is provided with an air inlet 5 and one goes out
Port 6, the air inlet 5 of absorber 4 are connected with the admission line 11 for taking gas from air delivering pipeline.
It is connected between disengaging gas storage device 1, disengaging gas storage device 2 and the air inlet 5 of absorber 4, gas outlet 6 defeated
Gas pipeline, it may be assumed that the first air inlet/outlet of disengaging gas storage device 1 connects the air inlet 5 of absorber 4 by the first gas transmission line 7,
The gas outlet 6 of absorber 4 is connected by the second gas transmission line 8；The second air inlet/outlet for passing in and out gas storage device 2 is defeated by third
Gas pipeline 9 connects the air inlet 5 of absorber 4, and the gas outlet 6 of absorber 4 is connected by the 4th gas transmission line 10.In addition, first
Gas transmission line 7 is equipped with the first control valve, and the second gas transmission line 8 is equipped with the second control valve, and third gas transmission line 9 is equipped with the
Three control valves, the 4th gas transmission line 10 are equipped with the 4th control valve.
Each gas transmission control valve be used for control itself where gas transmission line it is whether open-minded, each gas transmission line with it is corresponding
Gas transmission control valve matches, to realize following function: when the air inlet/outlet of disengaging gas storage device 1 and the air inlet 5 of absorber 4
When being connected, the air inlet/outlet of disengaging gas storage device 2 is connected with the gas outlet 6 of absorber 4；When disengaging gas storage device 1 into
When gas outlet is connected with the gas outlet 6 of absorber 4, disengaging gas storage device 2 is connected with the air inlet 5 of absorber 4.
Certainly, under the premise of stating function in realization, disengaging gas storage device 1, disengaging gas storage device 2 and absorber 4
Between connection can also realize that the structural schematic diagram of detection system is as shown in Figure 2 at this time by two position four-way valves 13.
Disengaging gas storage device 1, disengaging gas storage device 2 are separately connected two working holes of two position four-way valves 13, the air inlet of absorber 4
Mouth 5 and gas outlet 6 are separately connected the air inlet and air outlet of two position four-way valves.Due to the working principle category using two position four-way valves
In the prior art, details are not described herein again.
In addition, admission line 11 also can be set in any other position of gas transmission line as other embodiments,
Gas flowmeter 12 is provided on admission line 11, effect is to be input to the mixed gas for being mixed with gas to be detected quantitatively
In detection system.On admission line 11 other than being provided with flow instrument 12, it is additionally provided with air intake control valve, air inlet control
Valve be used for input it is quantitative be mixed with the mixed gas of gas to be detected after, close admission line 11.
As shown in figure 3, disengaging gas storage device 1, disengaging gas storage device 2 are the closed containers for storing gas, specifically
It can be a kind of piston mechanism.One end of its cylinder body 102 is closed integral structure, and top inner wall has an air inlet/outlet 103, into
Gas outlet 103 is connected to absorption plant system by gas transmission line.The cavity for passing in and out gas storage device 1, passing in and out gas storage device 2
Inside there is a telescopic piston 104, piston shaft 105 is helicitic texture, and swivel bearing 106 (nut screw structure) is fixed on bracket
It on 101, and covering on piston shaft 105, forms turbine and worm mechanism, swivel bearing 106 drives rotation by the work of motor,
Piston 104 is pushed to stretch work.Two disengaging gas storage devices are arranged side by side, in the detection process of gas to be detected, two
Piston motion in disengaging gas storage device is contrary and moves synchronously.Motor sends power to two by conveyer belt
Gas storage device is passed in and out, band piston makees stretching motion.Due to motor movement gear direction can two-way choice, piston 104
It may be implemented to move back and forth the disengaging airway dysfunction to realize disengaging gas storage device 1, pass in and out gas storage device 2.
In addition, 105 top of piston shaft is additionally provided with spindle nose rocking handle 107, effect is to be operated according to the actual situation, when
When equipment does not have electric power, the disengaging qigong to realize disengaging gas storage device 1 can be moved back and forth by hand application piston 104
Energy.Before gas production, piston can be adjusted to top, the residual gas in disengaging gas storage device can be reduced to the maximum extent.
Certainly, as other embodiments, in the case where stating function in realization, disengaging gas storage device can also be adopted
With other specific structures in the prior art.
Above-mentioned absorber and existing absorber are similar, and the inner cavity of absorber is equipped with quantitative chemical solution, the chemistry
Solution is configured according to the type of gas to be detected, when the mixed gas for being mixed with gas to be detected passes through the process of absorber
In, chemical solution is chemically reacted by the gas to be detected in absorption mixed gas, and then is detected in mixed gas
The content of gas to be detected.In the present embodiment, using hydrogen sulfide gas as gas to be detected.
In the course of work of said detecting system, measuring process is as follows:
1, first a disengaging gas storage device is selected to carry out gas storage, piston is adjusted to vertex, then will be filled in absorber
Quantitative chemical solution connects admission line and flowmeter until gas transmission line.
In order to enable measurement result is more accurate, before being passed through mixed gas to be measured, exclusion air inlet can choose
Residual air in pipeline 11.As shown in Figure 1 or 2, by increasing an exhaust gas pipeline 14, to exclude the gas in admission line 11
Body, since the method for excluding residual air belongs to the prior art, details are not described herein again.
2, according to selection gas transmission control valve, mixed gas can be allowed to be directly entered absorber at this time, or mixed gas is direct
The disengaging gas storage device selected in 1 is entered step, the reading for writing down flowmeter starts motor, when reaching the tolerance to be acquired
When, the air intake control valve on motor and admission line is closed, the reading on flowmeter is read, this completes a gases to inhale
It receives.
3, piston of another disengaging gas storage device is adjusted to vertex, adjusts gas transmission control valve, by have gas storage into
Outlet storage device connects the air inlet of absorber by gas transmission line, and the disengaging gas storage device of no gas storage is passed through appendix
Line connect absorber gas outlet, start motor, two disengaging gas storage devices in piston synchronous counter motion, an outlet,
One air inlet.
4, when the disengaging gas storage device for having gas storage empties, the disengaging gas storage device of no gas storage is completed to receive, electronic
Machine is shut down, and primary absorption program is completed.
Repeat the above steps 1-4, until the gas to be detected in mixed gas is all absorbed.Absorber is removed, is poured out
Solution in absorber is tested accordingly, records experimental data, and entire work is completed.Certainly, in order to make test result more
It is accurate to add, and can also repeatedly measure and average, finally obtain the concentration of gas to be detected.
When under low temperature harsh environment, it can choose a disengaging gas storage device and carry out gas storage, specific steps are as follows: will select
The piston for the disengaging gas storage device selected out is adjusted to vertex, connects admission line and flowmeter until gas transmission line, opens phase
The control valve answered empties the residual air in pipeline.According to selection adjustment control switch, mixed gas is directly entered to the disengaging of selection
Gas storage device, the reading for writing down flowmeter starts motor, when reaching the tolerance to be acquired, closes motor and admission line
On air intake control valve, read the reading on flowmeter, this completes gases to absorb.Then by the sample band of acquisition
It is tested under to operable environment, subsequent testing procedure can refer to above-mentioned steps 3 and 4, finally obtain gas to be detected
Concentration.
Claims (10)
1. a kind of detection device of gas content, which is characterized in that including the first disengaging gas storage device (1), the second disengaging gas
Storage device (2) and gas transmission line, the gas transmission line include being correspondingly connected with for the air inlet with absorber, gas outlet
First connection mouth, the second connection mouth；First disengaging gas storage device (1) is equipped with the first air inlet/outlet, second disengaging
Gas storage device (2) is equipped with the second air inlet/outlet；Control valve, the gas transmission line and control valve are provided in the gas transmission line
For: when the first air inlet/outlet is connected with the first connection mouth, the second air inlet/outlet is connected with the second connection mouth so that first into
Gas in outlet storage device (1) is flowed by absorber to the second disengaging gas storage device (2)；When the first air inlet/outlet with
When second connection mouth is connected, the second air inlet/outlet is connected with the first connection mouth, so that the gas in the second disengaging gas storage device (2)
Body is flowed by absorber to the first disengaging gas storage device (1)；The detection device further includes for taking gas from air delivering pipeline
Admission line (11), the admission line (11) is connected with the gas transmission line.
2. the detection device of gas content according to claim 1, which is characterized in that the first disengaging gas storage device
(1) and/or the second disengaging gas storage device (2) includes piston cylinder (102), telescopic piston (104), piston shaft (105) and drives
Piston axis (105) moves back and forth the driving mechanism (3) to realize disengaging airway dysfunction.
3. the detection device of gas content according to claim 2, which is characterized in that the driving mechanism (3) includes electricity
The output end of motivation, the motor connects a swivel bearing (106) being threaded through on the piston shaft (105), the rotation
Shaft holds (106) and the piston shaft (105) and forms turbine and worm mechanism.
4. the detection device of gas content according to claim 3, which is characterized in that the driving mechanism (3) further includes
With the spindle nose rocking handle (107) of the piston shaft (105) transmission connection.
5. the detection device of gas content described in any one of -4 according to claim 1, which is characterized in that the gas transmission line
It include: first air inlet/outlet by the first gas transmission line (7) for connecting the first connection mouth with control valve, by the
Two gas transmission lines (8) are for connecting the second connection mouth；First gas transmission line (7) is equipped with the first control valve, described
Second gas transmission line (8) is equipped with the second control valve；Second air inlet/outlet is by third gas transmission line (9) for connecting institute
The first connection mouth is stated, by the 4th gas transmission line (10) for connecting the second connection mouth；On the third gas transmission line (9)
Equipped with third control valve, the 4th gas transmission line (10) is equipped with the 4th control valve.
6. the detection device of gas content described in any one of -4 according to claim 1, which is characterized in that the gas transmission line
It include: two position four-way valve (13) with control valve, four valve ports of two position four-way valve (13) are described for being separately connected
First air inlet/outlet, the second air inlet/outlet, the first connection mouth and the second connection mouth.
7. the detection device of gas content described in any one of -4 according to claim 1, which is characterized in that the admission line
(11) flow instrument (12) and air intake control valve are provided in.
8. a kind of detection system of gas content, which is characterized in that including the first disengaging gas storage device (1), the second disengaging gas
Storage device (2) and absorber (4)；It is described first disengaging gas storage device (1) be equipped with the first air inlet/outlet, described second into
Outlet storage device (2) is equipped with the second air inlet/outlet；The absorber (4) includes an air inlet (5) and a gas outlet
(6)；First air inlet/outlet, the second air inlet/outlet and the air inlet (5), gas outlet are connected with gas transmission line between (6)
And control valve；The gas transmission line and control valve are used for: when the first air inlet/outlet is connected with air inlet (5), the second disengaging gas
Mouth is connected with gas outlet (6), so that the gas in the first disengaging gas storage device (1) passes in and out gas to second by absorber (4)
Storage device (2) flowing；When the first air inlet/outlet is connected with gas outlet (6), the second air inlet/outlet is connected with air inlet (5),
So that the gas in the second disengaging gas storage device (2) is flowed by absorber (4) to the first disengaging gas storage device (1)；It should
Detection system further includes the admission line (11) and the appendix for taking from air delivering pipeline the admission line of gas (11)
Line is connected.
9. the detection system of gas content according to claim 8, which is characterized in that the first disengaging gas storage device
(1) and/or the second disengaging gas storage device (2) includes piston cylinder (102), telescopic piston (104), piston shaft (105) and drives
Piston axis (105) moves back and forth the driving mechanism (3) to realize disengaging airway dysfunction.
10. the detection system of gas content according to claim 9, which is characterized in that the driving mechanism (3) includes electricity
The output end of motivation, the motor connects a swivel bearing (106) being threaded through on the piston shaft (105), the rotation
Shaft holds (106) and the piston shaft (105) and forms turbine and worm mechanism.
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Application publication date: 20190305 |