CN205670104U - A kind of coal containing methane gas equipressure priming apparatus - Google Patents
A kind of coal containing methane gas equipressure priming apparatus Download PDFInfo
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- CN205670104U CN205670104U CN201620558393.2U CN201620558393U CN205670104U CN 205670104 U CN205670104 U CN 205670104U CN 201620558393 U CN201620558393 U CN 201620558393U CN 205670104 U CN205670104 U CN 205670104U
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- coal
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- containing methane
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- moisture
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Abstract
The utility model discloses a kind of coal containing methane gas equipressure priming apparatus, it is adaptable to coal containing methane gas adsorption-desorption rule under moisture single-factor influence and the research of imbibition displacement effect simulation test.Described device by customization vial, seal with wax and fluid sealant realizes being preset in advance in airtight coal sample tank to the sealing of liquid distillate water and together with experiment coal sample, do not affect experiment coal sample evacuation and adsorption equilibrium；When needing moisture to enter coal containing methane gas, only need to be rotated down the rotation needle-valve of airtight coal sample tank top, needle-valve moves downward extruding vial, is squeezed and crushes at the bottom of bottle, and moisture overflows, it is achieved thereby that coal containing methane gas equipressure adds water.This utility model is simple, efficiently solve water injection pressure in high pressure water injection rupture coal body, water under high pressure displacement and inject water volume to the impact of experimental system and interference, create condition for adsorption-desorption rule and the imbibition displacement effect of coal containing methane gas under individually research moisture single factor test effect.
Description
Technical field
This utility model belongs to technical field of mine safety, relates to a kind of coal containing methane gas equipressure priming apparatus, especially suitable
Coal containing methane gas Adsorption-desorption Characteristics under simulation test moisture single-factor influence and imbibition displacement effect experimentation.
Background technology
Moisture is to coal containing methane gas desorbing affecting laws research aspect, and many scholar's research find that waterpower measure is residual after implementing
Stay the moisture in coal body interior detail micropore can suppress desorption of mash gas, reduce desorption of mash gas amount, reduce desorption of mash gas initial velocity, so
And, research moisture in waterpower measure implementation process being affected to aspect on coal seam adsorption gas desorbing is carried out less, needs
In further investigation further.It is true that coal is much larger than the coal absorbability to gas to the absorbability of water, enter along with moisture
Enter coal containing methane gas, will be in ADSORPTION STATE gas launch keen competition absorption, thus displace be in ADSORPTION STATE watt
This, promote coal seam adsorption gas desorbing.Moisture is embodied in two aspects to the impact of coal containing methane gas desorption properties, and one is that moisture oozes
Inspiration enters the displacement effect produced during coal containing methane gas and promotes coal seam adsorption gas desorbing, and two to be into coal body internal trickle
The passage of the moisture closure desorption of mash gas of hole, plays the effect of suppression desorption of mash gas after coal seam with gas release.
Waterpower measure is widely used in Safety of Coal Mine Production as a kind of comprehensive outburst prevention measures, but people at present
Recognizing unclear to the protrusion-dispelling mechanism of action of waterpower measure, the especially coalmass crevasse under the influence of waterpower measure generates and expands
The aspects such as exhibition rule, the desorption of mash gas of coal containing methane gas and migration rule lack data the most accurately, hinder this skill
Development further and the application of art.
The implementing of waterpower measure the present water under high pressure of variant of primitive coalbed is ruptured coal body make coal seam pressure relief and permeability improvement,
Water under high pressure displacement free gas, moisture varying coal body physico-mechanical properties and moisture are many on coal containing methane gas desorption properties impact etc.
Individual aspect, during engineering practice, above-mentioned effect occurs simultaneously, it is impossible to quantitatively distinguish.Therefore, under moisture single-factor influence
Coal containing methane gas adsorption law and imbibition displacement effect research are significant, also for the protrusion-dispelling mechanism of action seeing clearly waterpower measure
It it is the direction urgently furtherd investigate.
" the additional moisture test device and method (patent No.: the CN to coal seam with gas desorption properties of Cheng Yuanping
102053141 A) ", " a kind of coal-bed flooding suppression analog detection method of desorption of mash gas effect and the device (patent of Xiao Zhiguo
Number: CN 103776979 A) ", it is both for particulate coal and under the conditions of high pressure water injection, studies moisture to coal containing methane gas desorption properties
Impact, particulate coal discreteness is relatively strong, composes with down-hole and deposits actual coal body difference relatively greatly, and above-mentioned two patents all use in coal sample
Injecting additional moisture by high pressure water injection mode after adsorption equilibrium, with this understanding, water injection pressure, injection water volume all can be broken
Original adsorption equilibrium state in adsorption tanks, causes absorption pressure inside the tank to raise, thus experimental result is brought impact and interference,
Cannot accurately learn the adsorption law of coal containing methane gas under moisture single-factor influence.Additionally, there is scholar to pass through built-in outer liquid linkage dress
Put and realize moisture dependence self gravitation entrance coal containing methane gas, but this device is airtight tight, affects experiment coal sample evacuation and coal
Sample adsorption equilibrium.
Therefore, it is necessary to set up the method and device that a kind of coal containing methane gas equipressure adds water, it is ensured that moisture is at coal sample evacuation
And equipressure enters coal containing methane gas after adsorption equilibrium, effectively get rid of water injection pressure and inject the water volume impact on testing and interference,
Create conditions, to deep understanding for coal containing methane gas displacement effect under moisture single-factor influence and suppression desorbing effect study
The protrusion-dispelling mechanism of action of waterpower measure, thus provide theoretical foundation for improving the protrusion-dispelling action effect of waterpower measure.
Summary of the invention
The purpose of this utility model is that the coal containing methane gas equipressure providing a kind of simple in construction, method of testing simple adds
Water method and device, creates conditions for coal containing methane gas Adsorption-desorption Characteristics simulation test research under moisture single-factor influence,
To the protrusion-dispelling mechanism of action of deep understanding waterpower measure, thus provide reason for improving the protrusion-dispelling action effect of waterpower measure
Opinion foundation.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of coal containing methane gas equipressure priming apparatus, is made up of tank body and cover two parts, and the butt joint edge of tank body is along upper setting
Sealing ring is also connected with cover by screw thread；Tank interior places moulded coal, and there is reserving hole at moulded coal center, puts bottom reserving hole
Put the cylinder iron block of microprotrusion, iron block is placed airtight water-storing glass bottle；Two interfaces it are provided with on cover, one of them
Interface connects pressure transducer, and another interface installs rotatable needle-valve, and rotatable needle-valve side is provided with entry/exit QI KOU.
A kind of coal containing methane gas equipressure water feeding method, the method utilizes coal containing methane gas equipressure priming apparatus to enter in accordance with the following steps
OK:
Prepared by moulded coal: fresh coal sample is sized to different grain size, appropriate according to adding after certain ratio mix homogeneously
Water, the pertusate special moulded coal in the center that manufactures under constant pressure, it is placed in infrared drying oven under the conditions of 105 DEG C
Dried, till moulded coal constant weight；
Prepared by water sample: draft moisture content according to dry briquet quality and experiment, the distilled water of certain mass is loaded customization
Vial in, if vial loads still residual volume after distilled water, use the mode of sealing with wax to make liquid paraffin occupy the most surplus
Remaining volume, after liquid paraffin solidifies, uses glue sealed glass jars；
Laboratory sample tinning: first the cylinder iron block of top microprotrusion is positioned over bottom moulded coal, the part court of microprotrusion
On, then by its overall loading coal sample tank, afterwards water-storing glass bottle is slowly loaded moulded coal center hole, make bottle bottom contact
The microprotrusion part of iron block, then sealing coal sample tank；
Coal sample adsorption equilibrium: after coal sample tank seals, coal sample is evacuated to below 10Pa, then injects in coal sample tank
The high-purity methane gas of 99.99%, makes coal sample adsorption equilibrium, to simulate down-hole coal bed actual occurrence status；
Coal containing methane gas equipressure adds water: after coal sample adsorption equilibrium, is rotated down the rotation needle-valve of airtight coal sample tank top, needle-valve
Move downward extruding vial, owing to bottle bottom shifts to an earlier date the cylinder iron block of preset microprotrusion, be squeezed at the bottom of bottle and crush,
Thus realize moisture equipressure and enter coal containing methane gas.
This utility model provides a kind of coal containing methane gas equipressure water feeding method and device, is carried by the water-storing glass bottle of good seal
Before be positioned in special coal sample tank, after coal sample adsorption equilibrium, squeeze cullet bottle by rotating needle-valve, it is achieved thereby that containing gas
Coal equipressure adds water.Compared with prior art, during solving high pressure water injection, water injection pressure ruptures coal body, water under high pressure displacement and note
Enter water volume to the impact of experimental system and interference, for the absorption-desorption of coal containing methane gas under further investigation moisture single factor test effect
Rule and moisture create condition to the imbibition displacement effect of coal containing methane gas, and the protrusion-dispelling contributing to deep understanding waterpower measure is made
By mechanism, thus provide foundation for preferably carrying out coal and gas outburst prominent controlling.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model a kind of coal containing methane gas equipressure priming apparatus.
Detailed description of the invention
Shown in accompanying drawing, a kind of coal containing methane gas equipressure priming apparatus described in the utility model is a special coal sample tank, by
Tank body 1 and cover 2 two parts composition, pass through therebetween screw thread and described tank body 1 with cover 2 butt joint edge along upper sealing ring
11 realize sealing function；Described tank interior places moulded coal 3, and moulded coal entirety specification is Φ 50mm × 80mm, and moulded coal 3 center has pre-
Boxing out hole, the specification of center hole is Φ 22mm × 80mm, places the cylinder iron block 4 of microprotrusion, for needle-valve bottom hole
From bottom squeeze bottle bottom during precession downwards, thus causing bottle bottom to crush, moisture overflows, its size and moulded coal centre bore
Hole specification matches, and iron block 4 is placed airtight water-storing glass bottle 5, and internal diameter is 20mm, and height is 60mm, and bottle wall thickness is
1mm, is previously charged into distilled water 6 and 7 occupies residue free volume, described water-storing glass bottle by sealing with wax in water-storing glass bottle 5
On the one hand for storing liquid water, add water offer water source for follow-up equipressure, seal before further aspect is that moulded coal adsorption equilibrium
Aqueous water, impacts coal sample evacuation and adsorption equilibrium eliminating moisture；Described cover is provided with two interfaces, described interface
One is used for connecting pressure transducer 8, and described pressure transducer 8 adds for the adsorption equilibrium pressure and moisture equipressure monitoring coal sample
Pressure in airtight coal sample tank change during entering coal containing methane gas rear substitution adsorption gas, another interface is used for installing rotatable
Needle-valve 9, extrudes water-storing glass bottle for precession so that glass body crushes, it is achieved coal containing methane gas equipressure adds water, and also serves as watt simultaneously
Air inlet during this adsorption equilibrium and desorption of mash gas outlet.
Utilize above-mentioned coal containing methane gas equipressure priming apparatus to carry out equipressure to add water experiment, carry out the most in accordance with the following steps:
A. prepared by moulded coal: after being pulverized on pulverizer by the raw coal collected, and uses the combination screening of 0.25mm and 0.5mm
Do not filter out 0.25mm～0.5mm and the coal dust of 0.25mm following two granularity, appropriate in adding after the ratio mix homogeneously of 1:2
Water, on forcing press with under the pressure of constant 80KN suppress 1h be fabricated to the pertusate special moulded coal in center, moulded coal specification is
Φ 50mm × 80mm, center hole a size of Φ 22mm × 80mm, be placed in moulded coal in infrared drying oven after having prepared,
It is dried to moulded coal constant weight under the conditions of 105 DEG C；
B. prepared by water sample: draft moisture content by the distilled water loading customization of certain mass according to being dried briquet quality with experiment
Vial in, if vial loads still some residual space after distilled water, use the mode of sealing with wax to make liquid paraffin occupy surplus
Complementary space, to eliminate the interference that experiment is brought by this partial volume, after liquid wax solidifies, uses A-B glue sealed glass jars；
C. laboratory sample tinning: first the cylinder iron block of top microprotrusion is positioned over bottom moulded coal, the part of microprotrusion
Upward, then by its overall loading coal sample tank, afterwards water-storing glass bottle is slowly loaded moulded coal center hole, make bottle bottom connect
Touch the microprotrusion part of iron block, then sealing coal sample tank；
D. coal sample adsorption equilibrium: after coal sample tank seals, coal sample is evacuated to below 10Pa, then injects in coal sample tank
The high-purity methane gas of 99.99%, makes coal sample reach to work out adsorption equilibrium pressure, to simulate down-hole coal bed actual occurrence status；
E. coal containing methane gas equipressure adds water: after coal sample adsorption equilibrium, is rotated down the rotation needle-valve of airtight coal sample tank top, pin
Valve moves downward extruding vial, owing to bottle bottom shifts to an earlier date the cylinder iron block of preset microprotrusion, is squeezed and breaks at the bottom of bottle
Broken, thus realize moisture equipressure and enter coal containing methane gas.
Claims (1)
1. a coal containing methane gas equipressure priming apparatus, it is characterised in that be made up of tank body (1) and cover (2) two parts, tank body
(1) it is provided with sealing ring (11) on butt joint edge edge and is connected with cover (2) by screw thread；Tank interior places moulded coal (3), type
There is reserving hole at coal (3) center, places the cylinder iron block (4) of microprotrusion bottom hole, and iron block (4) is upper places airtight water storage
Vial (5)；Cover (2) is provided with two interfaces, and one of them interface connects pressure transducer (8), and another interface is installed
Rotatable needle-valve (9), rotatable needle-valve (9) side is provided with entry/exit QI KOU (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620558393.2U CN205670104U (en) | 2016-06-12 | 2016-06-12 | A kind of coal containing methane gas equipressure priming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620558393.2U CN205670104U (en) | 2016-06-12 | 2016-06-12 | A kind of coal containing methane gas equipressure priming apparatus |
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| Publication Number | Publication Date |
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| CN205670104U true CN205670104U (en) | 2016-11-02 |
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| CN201620558393.2U Withdrawn - After Issue CN205670104U (en) | 2016-06-12 | 2016-06-12 | A kind of coal containing methane gas equipressure priming apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891045A (en) * | 2016-06-12 | 2016-08-24 | 河南理工大学 | Water adding method and device for gas containing coal in isobaric mode |
| CN110646583A (en) * | 2019-10-09 | 2020-01-03 | 中煤科工集团重庆研究院有限公司 | Method and device for coal seam water injection similar simulation test |
| RU219865U1 (en) * | 2023-03-16 | 2023-08-11 | Борис Семенович Ксенофонтов | INSTALLATION FOR MEASURING GASES IN LIQUID |
-
2016
- 2016-06-12 CN CN201620558393.2U patent/CN205670104U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891045A (en) * | 2016-06-12 | 2016-08-24 | 河南理工大学 | Water adding method and device for gas containing coal in isobaric mode |
| CN105891045B (en) * | 2016-06-12 | 2019-02-22 | 河南理工大学 | A kind of coal containing methane gas equipressure adds the method and apparatus of water |
| CN110646583A (en) * | 2019-10-09 | 2020-01-03 | 中煤科工集团重庆研究院有限公司 | Method and device for coal seam water injection similar simulation test |
| CN110646583B (en) * | 2019-10-09 | 2022-02-22 | 中煤科工集团重庆研究院有限公司 | Method and device for coal seam water injection similar simulation test |
| RU219865U1 (en) * | 2023-03-16 | 2023-08-11 | Борис Семенович Ксенофонтов | INSTALLATION FOR MEASURING GASES IN LIQUID |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161102 Effective date of abandoning: 20190222 |
|
| AV01 | Patent right actively abandoned |