CN102706768A - Gas desorption instrument - Google Patents

Gas desorption instrument Download PDF

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Publication number
CN102706768A
CN102706768A CN2012101891682A CN201210189168A CN102706768A CN 102706768 A CN102706768 A CN 102706768A CN 2012101891682 A CN2012101891682 A CN 2012101891682A CN 201210189168 A CN201210189168 A CN 201210189168A CN 102706768 A CN102706768 A CN 102706768A
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CN
China
Prior art keywords
buret
base
instrument
exhaust hose
desorption
Prior art date
Application number
CN2012101891682A
Other languages
Chinese (zh)
Inventor
王魁军
富向
曹尧林
王宇鹍
王振伟
杨鹏
陈杰
Original Assignee
煤炭科学研究总院沈阳研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 煤炭科学研究总院沈阳研究院 filed Critical 煤炭科学研究总院沈阳研究院
Priority to CN2012101891682A priority Critical patent/CN102706768A/en
Publication of CN102706768A publication Critical patent/CN102706768A/en

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Abstract

The invention relates to a gas desorption instrument. The gas desorption instrument comprises a measuring tube, an exhaust rubber tube and a puncture needle; an upper cover is arranged on the top of the measuring tube; a hoisting ring is arranged on the upper cover; a base is arranged at the bottom of the measuring tube; the base is provided with a water inlet; a plug is arranged on the water inlet; a water outlet is formed between the base and the measuring tube; a hose is arranged in the measuring tube; the base is provided with an air inlet; the hose is connected with the exhaust rubber tube through the air inlet; the exhaust rubber tube is connected with a coal sample tank through the puncture needle; and a spring clip is arranged on the exhaust rubber tube. The gas desorption instrument is simple and compact in structure, small in size, light in weight, easy to transport, convenient to carry and low in water consumption, facilitates wild or underground operation, and is suitable for water-free measuring sites; because the hoisting ring is arranged on the upper cover and the base is arranged at the lower end of the measuring tube, the instrument is easy to level; and when the instrument is used, the hoisting ring can be tied on a rope to hoist the instrument, or the instrument is placed on a horizontal plane.

Description

The desorption of mash gas appearance

Technical field

The invention belongs to coal seam gas-bearing capacity determination techniques field, especially relate to the desorption of mash gas appearance.

Background technology

Coal seam gas-bearing capacity is measured direct method and comprised: boring desorption of mash gas method, down-hole drilling desorption of mash gas method and coal core collector method etc. are surveyed in ground.Basic skills is to have got coal borer bits or coal core when just having exposed in the coal seam; The closed container of packing into fast; Measure its desorption rate and desorption quantity Q2; Utilize the desorb rule to infer compensation loss part total amount Q1 in the sampling process, return gas remaining quantity Q3 in the experimental determination coal sample again, draw gas bearing capacity Q=Q1+Q2+Q3 at last.And in the process of experimental determination gas remaining quantity Q3; Earlier with gas amount Q31 before the pulverizing of coal sample in the degasser mensuration coal sample jar; Originally the coal sample jar of sealing is opened again; The ball grinder that seals of packing into is then pulverized again, and then measures and pulverize after gas amount Q32, adds Q32 by Q31 and draws Q3.When measuring desorption of mash gas amount Q2 in the down-hole, it is as shown in Figure 1 to survey the desorption of mash gas appearance to general employing.Its principle be gas after 100 desorbs of coal sample tank body through piercing needle 29, exhaust hose 28, get into buret 21, the water in the buret of then glass material being processed 21 is discharged in the tank 24 gradually.Its shortcoming be volume big, need surface level to place tank 24, water consumption or lack of water, buret 21 are frangible etc. sometimes in the down-hole greatly in the open air.

Summary of the invention

The technical matters that the present invention will solve provides the desorption of mash gas appearance, and this desorption of mash gas appearance has the advantages that volume is little, water consumption is little.

In order to solve the problem that prior art exists, the technical scheme that the present invention adopts is:

The desorption of mash gas appearance includes buret, exhaust hose and piercing needle, and the top of described buret is provided with loam cake, on cover suspension ring be installed; The bottom of buret is provided with base, and base is provided with water inlet, and water inlet is provided with stopper; Form a freeing port between base and the buret, be provided with flexible pipe in the buret, have air intake opening on the base; Flexible pipe links to each other with exhaust hose through air intake opening, and exhaust hose links to each other with the coal sample jar through piercing needle, and spring clamp is installed on the exhaust hose.

Between described air intake opening and the exhaust hose solenoid valve is installed, solenoid valve links to each other with single-chip microcomputer through circuit, and single-chip microcomputer links to each other with differential pressure pickup through circuit, and the low pressure end of differential pressure pickup communicates with buret top, high-pressure side and atmosphere.

Advantage and effect that the present invention had are:

Desorption of mash gas appearance of the present invention is compared with old-fashioned desorption of mash gas appearance and has been removed air-breathing ball, tank, screw clamp and drainpipe, and simple and compact for structure, volume is little, and is in light weight, is easy to transportation, is easy to carry; Water consumption is few, is convenient to field or borehole operation, is fit to anhydrous mensuration place; Because suspension ring are installed in the lower end of buret base are installed last covering, the easy levelling of instrument can hang up rope on the suspension ring bolt during use, perhaps is placed on the surface level and both can.

The present invention is owing to be equipped with solenoid valve between air intake opening and exhaust hose; Solenoid valve links to each other with single-chip microcomputer, differential pressure pickup through circuit successively; The low pressure end of differential pressure pickup communicates with buret top; High-pressure side and atmosphere, differential pressure pickup can read pressure reduction between buret top and the atmospheric pressure, thereby calculate gas amount to calculate height of water level.By the Single-chip Controlling experimentation, height of water level is monitored, desorption of mash gas amount change with time is carried out analytical calculation, realize that the intelligence of desorption of mash gas amount Q2 is measured.

Description of drawings

Fig. 1 is the one-piece construction figure of old-fashioned desorption of mash gas appearance;

Fig. 2 is the structural representation of the desorption of mash gas appearance shown in the embodiment 1;

Fig. 3 is the structural representation of the desorption of mash gas appearance shown in the embodiment 2.

Among the figure: buret 1, loam cake 2, base 3, water inlet 4, flexible pipe 5, spring clamp 6, exhaust hose 8, piercing needle 9, coal sample jar 10, suspension ring 12, air intake opening 13, O-ring seal 15, stopper 16, differential pressure pickup 50, single-chip microcomputer 51, solenoid valve 52.

Embodiment

Embodiment 1:

As shown in Figure 2, present embodiment desorption of mash gas appearance includes buret 1, exhaust hose 8 and piercing needle 9; The top of described buret 1 is provided with loam cake 2, and suspension ring 12 are installed on the loam cake 2, and the bottom of buret 1 is provided with base 3; The middle part of base 3 is provided with water inlet 4, and water inlet 4 is provided with stopper 16, is provided with O-ring seal 15 between stopper 16 and the water inlet 4; Form a freeing port 14 between base 3 and the buret 1, freeing port 14 and the formal communication of buret 1 bottom with " U " type pipe.Be provided with flexible pipe 5 in the buret 1, have air intake opening 13 on the base 3, air intake opening 13 is linked up with buret 1 through connecting flexible pipe 5.Have scale on the buret 1.Flexible pipe 5 links to each other with exhaust hose 8 through air intake opening 13, and exhaust hose 8 links to each other with coal sample jar 10 through piercing needle 9, and spring clamp 6 is installed on the exhaust hose 8.

Method of application of the present invention is following:

When in buret 1, adorning water instrument is stood upside down, open stopper 16, block air intake opening 13 and freeing port 14 with finger, behind the injection clear water, the stopper 16 of screwing on.Before the mensuration, rope on suspension ring 12 bolts is hung up or is placed on the surface level, in the mensuration process, methane gas gets into buret 1 by coal sample jar 10 through exhaust hose 8, simultaneously the water of discharging is directly discharged from freeing port 14.With manual read's output tube upper volume, the record change with time.

Embodiment 2:

As shown in Figure 3, present embodiment desorption of mash gas appearance includes buret 1, exhaust hose 8 and piercing needle 9; The top of described buret 1 is provided with loam cake 2, and suspension ring 12 are installed on the loam cake 2, and the bottom of buret 1 is provided with base 3; The middle part of base 3 is provided with water inlet 4, and water inlet 4 is provided with stopper 16, is provided with O-ring seal 15 between stopper 16 and the water inlet 4; Form a freeing port 14 between base 3 and the buret 1, be provided with flexible pipe 5 in the buret 1, have air intake opening 13 on the base 3; Solenoid valve 52 is installed on the air intake opening 13; Air intake opening 13 links to each other with exhaust hose 8 through solenoid valve 52, and exhaust hose 8 links to each other with coal sample jar 10 through piercing needle 9, and spring clamp 6 is installed on the exhaust hose 8.Solenoid valve 52 links to each other with single-chip microcomputer 51 through circuit; Single-chip microcomputer 51 links to each other with differential pressure pickup 50 through circuit; The low pressure end of differential pressure pickup 50 communicates with buret 1 top; High-pressure side and atmosphere, differential pressure pickup 50 can read pressure reduction between buret 1 top and the atmospheric pressure, thereby calculate gas amount to calculate height of water level.By single-chip microcomputer 51 control experimentations, height of water level is monitored, desorption of mash gas amount change with time is carried out analytical calculation, realize that the intelligence of desorption of mash gas amount Q2 is measured.

Claims (2)

1. the desorption of mash gas appearance is characterized in that including buret, exhaust hose and piercing needle, and the top of described buret is provided with loam cake; On cover suspension ring be installed, the bottom of buret is provided with base, base is provided with water inlet; Water inlet is provided with stopper, forms a freeing port between base and the buret, is provided with flexible pipe in the buret; Have air intake opening on the base; Flexible pipe links to each other with exhaust hose through air intake opening, and exhaust hose links to each other with the coal sample jar through piercing needle, and spring clamp is installed on the exhaust hose.
2. desorption of mash gas appearance according to claim 1; It is characterized in that between described air intake opening and the exhaust hose solenoid valve being installed; Solenoid valve links to each other with single-chip microcomputer through circuit; Single-chip microcomputer links to each other with differential pressure pickup through circuit, and the low pressure end of differential pressure pickup communicates with buret top, high-pressure side and atmosphere.
CN2012101891682A 2012-06-11 2012-06-11 Gas desorption instrument CN102706768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101891682A CN102706768A (en) 2012-06-11 2012-06-11 Gas desorption instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101891682A CN102706768A (en) 2012-06-11 2012-06-11 Gas desorption instrument

Publications (1)

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CN102706768A true CN102706768A (en) 2012-10-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628451A (en) * 2014-10-28 2016-06-01 北京宇航系统工程研究所 Pipeline inclusion gas collecting and measuring apparatus
CN105910954A (en) * 2016-04-25 2016-08-31 成都理工大学 Shale gas content measuring instrument

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671098A (en) * 1985-09-25 1987-06-09 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Energy, Mines And Resources Delta P instrument for oxidation measurement
CN2151460Y (en) * 1993-04-02 1993-12-29 煤炭科学研究总院北京煤化学研究所 Automatic austenitic air analyzer
CN201311416Y (en) * 2008-12-11 2009-09-16 煤炭科学研究总院重庆研究院 Underground gas desorption rate tester
CN202710434U (en) * 2012-06-11 2013-01-30 煤炭科学研究总院沈阳研究院 Gas desorption instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671098A (en) * 1985-09-25 1987-06-09 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Energy, Mines And Resources Delta P instrument for oxidation measurement
CN2151460Y (en) * 1993-04-02 1993-12-29 煤炭科学研究总院北京煤化学研究所 Automatic austenitic air analyzer
CN201311416Y (en) * 2008-12-11 2009-09-16 煤炭科学研究总院重庆研究院 Underground gas desorption rate tester
CN202710434U (en) * 2012-06-11 2013-01-30 煤炭科学研究总院沈阳研究院 Gas desorption instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628451A (en) * 2014-10-28 2016-06-01 北京宇航系统工程研究所 Pipeline inclusion gas collecting and measuring apparatus
CN105910954A (en) * 2016-04-25 2016-08-31 成都理工大学 Shale gas content measuring instrument

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Application publication date: 20121003