CN204008369U - Air content continuous measuring device - Google Patents

Air content continuous measuring device Download PDF

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Publication number
CN204008369U
CN204008369U CN201420323357.9U CN201420323357U CN204008369U CN 204008369 U CN204008369 U CN 204008369U CN 201420323357 U CN201420323357 U CN 201420323357U CN 204008369 U CN204008369 U CN 204008369U
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CN
China
Prior art keywords
gas
control assembly
circuit control
gas circuit
holder
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Expired - Fee Related
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CN201420323357.9U
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Chinese (zh)
Inventor
任收麦
吴非
杨仁政
邵广宇
周志
郭天旭
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HAICHENG CITY PETROCHEMICAL INSTRUMENT FACTORY
CHINA GEOLOGICAL SURVEY OIL GAS RESOURCE SURVEY CENTER
Original Assignee
HAICHENG CITY PETROCHEMICAL INSTRUMENT FACTORY
CHINA GEOLOGICAL SURVEY OIL GAS RESOURCE SURVEY CENTER
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Application filed by HAICHENG CITY PETROCHEMICAL INSTRUMENT FACTORY, CHINA GEOLOGICAL SURVEY OIL GAS RESOURCE SURVEY CENTER filed Critical HAICHENG CITY PETROCHEMICAL INSTRUMENT FACTORY
Priority to CN201420323357.9U priority Critical patent/CN204008369U/en
Application granted granted Critical
Publication of CN204008369U publication Critical patent/CN204008369U/en
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Abstract

The utility model discloses a kind of air content continuous measuring device, comprise data collection and control unit, fill saturated aqueous common salt container, gas-holder, be located at the liquid level sensor in gas-holder; Data collection and control unit comprises main control chip, and the data output end of liquid level sensor is connected with the data input pin of main control chip, and the lower opening of gas-holder is communicated with seal of vessel by pipeline, the first gas circuit control assembly; The lead up to pipeline, the 3rd gas circuit control assembly, vacuum pump of the first opening of gas-holder are communicated with the sealing of gas collection mouth; The second opening of gas-holder is communicated with the sealing of desorb source of the gas by pipeline, the 4th gas circuit control assembly; The control end of the first gas circuit control assembly, the 3rd gas circuit control assembly, the 4th gas circuit control assembly, vacuum pump is connected with the control signal output terminal of main control chip respectively.The utility model can carry out direct, continuous measurement to stripping gas volume, can collect stripping gas sample to carry out subsequent analysis, installs reliable and stablely, and measurement result is comparatively accurate.

Description

Air content continuous measuring device
Technical field
The utility model relates to a kind of air content continuous measuring device, belongs to exploration technical field of measurement and test.
Background technology
Shale gas and coal-seam gas are current wide valued unconventional gas resourcess, the form of shale gas is to be stored in the free gas in natural fracture and interparticle pore, and the adsorbed gas that is adsorbed on kerogen, clay particle surface is main, coal-seam gas is mainly adsorbed on matrix of coal particle surface; No matter be shale gas or coal-seam gas, the adsorbed gas that is difficult under normal temperature condition discharge has all occupied very big proportion.How fast, the total air content of the sample of desorption absorption gas, and Accurate Determining thoroughly, be amount of natural gas in estimation coal, mud shale, interbedded sand, ensure the key point of coal-seam gas and shale gas RESERVE EVALUATION result accuracy.
The existing air content measurement mechanism for coal, mud shale, sandstone, is mainly divided into following three kinds:
Volume flow measurement device, it obtains the volume of its cumulative volume or different time sections by measuring the volume flow rate of stripping gas; This device can obtain the continuous situation of change of gas desorption quantity, but the measuring error of gas flow rate is larger when lower for desorption rate, and the volume of fluid is very easily subject to the impact of environment temperature and pressure;
Mass flow meter, its heat of taking away according to the gas that flows through flowmeter carrys out Fluid Computation quality, the ability of the anti-environment temperature of this device and pressure influence is stronger, but the in the situation that in different desorption phase, gas composition changing, accuracy of measurement reduces greatly, especially in the site desorption gas measuring process of shale, because gas composition is along with the passing of desorption time can change, measurement result is inaccurate;
Combustion method gas volume measurement mechanism, it is by the hydrocarbon gas directly burning in stripping gas, directly separate the pure hydrocarbon gas content of sucking-off, this device stability is high, can analyze the hydrocarbon gas volume in cumulative volume, but cannot obtain stripping gas sample, cause difficulty to the work such as follow-up gas composition analysis.
Utility model content
In view of the foregoing, the purpose of this utility model is to provide a kind of air content continuous measuring device, and this device can carry out direct, continuous measurement to the volume of stripping gas, can collect stripping gas sample to carry out subsequent analysis, install reliable and stablely, measurement result is comparatively accurate.
For achieving the above object, the utility model is by the following technical solutions:
Air content continuous measuring device, is characterized in that, comprise data collection and control unit, fill saturated aqueous common salt container, gas-holder, be located at the liquid level sensor in gas-holder;
Data collection and control unit comprises main control chip, and the data output end of this liquid level sensor is connected with the data input pin of this main control chip, and the lower opening of this gas-holder is communicated with this seal of vessel by pipeline, the first gas circuit control assembly; The lead up to pipeline, the 3rd gas circuit control assembly, vacuum pump of the first opening of this gas-holder are communicated with the sealing of gas collection mouth; The second opening of this gas-holder is communicated with the sealing of desorb source of the gas by pipeline, the 4th gas circuit control assembly;
The control end of this first gas circuit control assembly, the 3rd gas circuit control assembly, the 4th gas circuit control assembly, vacuum pump is connected with the control signal output terminal of this main control chip respectively.
Further,
Separately the lead up to pipeline, the second gas circuit control assembly of the first opening of described gas-holder are communicated with air-source sealing, and the control end of this second gas circuit control assembly is connected with the control signal output terminal of described main control chip.
Described data collection and control unit also comprises load module, and the output terminal of this load module is connected with the control signal input end of described main control chip.
Described data collection and control unit also comprises display module, and the data output end of described main control chip is connected with the data input pin of this display module.
Described the first gas circuit control assembly, the second gas circuit control assembly, the 3rd gas circuit control assembly, the 4th gas circuit control assembly are solenoid valve.
The utility model has the advantage of:
Air content continuous measuring device of the present utility model, can carry out direct, continuous measurement to the volume of stripping gas, can collect stripping gas sample to carry out subsequent analysis, install reliable and stable, affected by environment little, can be applied to the in-site measurement work of the air content such as shale gas, coal-seam gas, and measurement result is comparatively accurate.
Brief description of the drawings
Fig. 1 is composition structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is composition structural representation of the present utility model.As shown in the figure, the disclosed air content continuous measuring device of the utility model, comprise data collection and control unit 1, fill saturated aqueous common salt container 2, gas-holder 3, be located at liquid level sensor 4 in gas-holder 3 and for controlling the gas circuit control assembly of gas path on-off;
Data collection and control unit 1 comprises main control chip, and the data output end of liquid level sensor 4 is connected with the data input pin of main control chip, and the lower opening of gas-holder 3 is communicated with container 2 sealings by pipeline, the first gas circuit control assembly 5; The first via of the first opening of gas-holder 3 is communicated with air-source sealing by pipeline, the second gas circuit control assembly 6, and the second tunnel is communicated with 9 sealings of gas collection mouth by pipeline, the 3rd gas circuit control assembly 7, vacuum pump 8; The second opening of gas-holder 3 is communicated with the sealing of desorb source of the gas by pipeline, the 4th gas circuit control assembly 10; The control end of the first gas circuit control assembly 5, the second gas circuit control assembly 6, the 3rd gas circuit control assembly 7, the 4th gas circuit control assembly 10, vacuum pump 8 is connected with the control signal output terminal of main control chip respectively;
Data collection and control unit 1 also comprises display module and load module, the data output end of main control chip is connected with the data input pin of this display module, can show in real time the volume (form such as cumulative volume, time dependent volume curve) of stripping gas; The output terminal of load module is connected with the control signal input end of main control chip, can set respectively by load module connection or the disconnection of the first gas circuit control assembly 5, the second gas circuit control assembly 6, the 3rd gas circuit control assembly 7, the 4th gas circuit control assembly 10 and vacuum pump 8.Described the first gas circuit control assembly 5, the second gas circuit control assembly 6, the 3rd gas circuit control assembly 7, the 4th gas circuit control assembly 10 can be to disconnect or to connect the switching mode parts that gas circuit connects, as solenoid valve etc.
Described liquid level sensor can use magnetostrictive liquid level sensor, and concrete model is LHB-0400-S01-V11, and its measuring accuracy can reach 0.1 milliliter.
The process of utilizing air content continuous measuring device of the present utility model to carry out air content measurement is:
S1: desorb source of the gas and device are connected, connect the first gas circuit control assembly 5, the 3rd gas circuit control assembly 7, vacuum pump 8 by load module and main control chip control, saturated aqueous common salt in container 2 enters gas-holder 3 through the first gas circuit control assembly 5, liquid level sensor 4 gathers the positional information of liquid in gas-holder 3, and this positional information is sent to main control chip, in the time that the liquid level in gas-holder 3 arrives a predetermined altitude, disconnect the 3rd gas circuit control assembly 7, vacuum pump 8 by load module and main control chip control;
S2: connect the 4th gas circuit control assembly 10 by load module and main control chip control, stripping gas enters gas-holder 3 through the 4th gas circuit control assembly 10, along with entering of stripping gas, liquid level in gas-holder 3 constantly declines, liquid level sensor 4 gathers the positional information of liquid in gas-holder 3, and this positional information is sent to main control chip, in the time that the liquid level in gas-holder 3 drops to a predetermined minuent, disconnect the 4th gas circuit control assembly 10 by load module;
By the distance of liquid level decline in columniform gas-holder 3, can calculate the volume of desorption gas, if the interior radius of circle of gas-holder is r, liquid level falling head is h, the volume of stripping gas is about V=π r 2h;
In addition, in the exhaust process of stripping gas, main control chip can per secondly read the liquid position information of 20 times, calculates the volume of stripping gas according to the liquid position information reading, and then draws out the time dependent volume curve of stripping gas, is beneficial to subsequent analysis.
S3: again connect the 3rd gas circuit control assembly 7, vacuum pump 8 by load module, saturated aqueous common salt is entered in gas-holder 3 again, the positional information of the liquid gathering by liquid level sensor 4, in the time that the liquid level in gas-holder 3 arrives a predetermined altitude, disconnect the 3rd gas circuit control assembly 7, vacuum pump 8;
S4: connect the 4th gas circuit control assembly 10 by load module, stripping gas enters gas-holder 3 through the 4th gas circuit control assembly 10, the positional information of the liquid gathering by liquid level sensor 4, in the time that the liquid level in gas-holder 3 drops to a predetermined minuent, disconnects the 4th gas circuit control assembly 10;
Repeat above-mentioned steps S3, S4, until execution step is when S4, liquid level in gas-holder 3 no longer declines, till entering gas-holder 3 without stripping gas, now, disconnect the 4th gas circuit control assembly 10, open the 3rd gas circuit control assembly 7, vacuum pump 8, the stripping gas of collecting in gas-holder 3 is discharged from gas collection mouth 9; Stripping gas disconnects the 3rd gas circuit control assembly 7, vacuum pump 8, and connects the second gas circuit control assembly 6 after all discharging, and air enters in gas-holder 3 through the second gas circuit control assembly 6, and the saturated aqueous common salt in gas-holder 3 flows back in container 2, measures and finishes.
Air content continuous measuring device of the present utility model, is to utilize draining water gathering of gas law to collect desorption gas, can carry out direct, continuous measurement to the volume of stripping gas, and can collect stripping gas sample to carry out subsequent analysis; In measuring process, without external air source, avoid the impact of other gas componant on measurement result; Device picking rate is fast, and measurement result is comparatively accurate, and measurement result can be accurate to 0.1 milliliter.
The above is preferred embodiment of the present utility model and the know-why used thereof; for a person skilled in the art; in the situation that not deviating from spirit and scope of the present utility model; any apparent change such as equivalent transformation, simple replacement based on technical solutions of the utility model basis, within all belonging to the utility model protection domain.

Claims (5)

1. air content continuous measuring device, is characterized in that, comprise data collection and control unit, fill saturated aqueous common salt container, gas-holder, be located at the liquid level sensor in gas-holder;
Data collection and control unit comprises main control chip, and the data output end of this liquid level sensor is connected with the data input pin of this main control chip, and the lower opening of this gas-holder is communicated with this seal of vessel by pipeline, the first gas circuit control assembly; The lead up to pipeline, the 3rd gas circuit control assembly, vacuum pump of the first opening of this gas-holder are communicated with the sealing of gas collection mouth; The second opening of this gas-holder is communicated with the sealing of desorb source of the gas by pipeline, the 4th gas circuit control assembly;
The control end of this first gas circuit control assembly, the 3rd gas circuit control assembly, the 4th gas circuit control assembly, vacuum pump is connected with the control signal output terminal of this main control chip respectively.
2. air content continuous measuring device as claimed in claim 1, it is characterized in that, separately the lead up to pipeline, the second gas circuit control assembly of the first opening of described gas-holder are communicated with air-source sealing, and the control end of this second gas circuit control assembly is connected with the control signal output terminal of described main control chip.
3. air content continuous measuring device as claimed in claim 2, is characterized in that, described data collection and control unit also comprises load module, and the output terminal of this load module is connected with the control signal input end of described main control chip.
4. air content continuous measuring device as claimed in claim 2 or claim 3, is characterized in that, described data collection and control unit also comprises display module, and the data output end of described main control chip is connected with the data input pin of this display module.
5. air content continuous measuring device as claimed in claim 4, is characterized in that, described the first gas circuit control assembly, the second gas circuit control assembly, the 3rd gas circuit control assembly, the 4th gas circuit control assembly are solenoid valve.
CN201420323357.9U 2014-06-17 2014-06-17 Air content continuous measuring device Expired - Fee Related CN204008369U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420323357.9U CN204008369U (en) 2014-06-17 2014-06-17 Air content continuous measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420323357.9U CN204008369U (en) 2014-06-17 2014-06-17 Air content continuous measuring device

Publications (1)

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CN204008369U true CN204008369U (en) 2014-12-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104020076A (en) * 2014-06-17 2014-09-03 中国地质调查局油气资源调查中心 Continuous gas content measuring device
CN107941650A (en) * 2016-10-13 2018-04-20 河南理工大学 A kind of coal bed gas and shale gas adsorption/desorption automatic measuring method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104020076A (en) * 2014-06-17 2014-09-03 中国地质调查局油气资源调查中心 Continuous gas content measuring device
CN107941650A (en) * 2016-10-13 2018-04-20 河南理工大学 A kind of coal bed gas and shale gas adsorption/desorption automatic measuring method and device

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C14 Grant of patent or utility model
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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141210

Termination date: 20180617