CN201984002U - Water lock experimental device in case of external liquid invasion - Google Patents
Water lock experimental device in case of external liquid invasion Download PDFInfo
- Publication number
- CN201984002U CN201984002U CN2011200459796U CN201120045979U CN201984002U CN 201984002 U CN201984002 U CN 201984002U CN 2011200459796 U CN2011200459796 U CN 2011200459796U CN 201120045979 U CN201120045979 U CN 201120045979U CN 201984002 U CN201984002 U CN 201984002U
- Authority
- CN
- China
- Prior art keywords
- operation valve
- cylinder
- tensimeter
- high pressure
- communicated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
A water lock experimental device in case of external liquid invasion, relates to a water lock experimental device, and aims to solve the problem that no special water lock experimental instrument for avoiding the overrun of methane gas on working faces exists at present. In the device, a vacuum pump is communicated with a left end port of a high-pressure connecting hose; the high-pressure connecting hose is communicated with a reference cylinder and a sample cylinder respectively; an internal external liquid linkage device is arranged in the sample cylinder; a gas bottle is communicated with the high-pressure connecting hose through a pipeline; a first control valve, a second control valve, a third control valve and a fourth control valve are arranged on the high-pressure connecting hose; a right end port of the high-pressure connecting hose is communicated with a differential pressure gauge; a fifth control valve is arranged on the pipeline; a coal sample bottle is arranged at the bottom in a casing; a uniformly-distributed disperser is arranged at the upper part of the coal sample bottle and fixedly connected in the casing; a liquid filling cylinder is arranged on the uniformly-distributed disperser and fixedly connected with the casing; at least one liquid outlet is arranged at the bottom of the liquid filling cylinder; and a steel ball is arranged on the at least one liquid outlet. The device is used for the water lock experiments in case of external liquid invasion.
Description
Technical field
The utility model relates to a kind of water lock experimental provision.
Background technology
To the deepening continuously of gas diaster prevention and control technical research, gas drainage is considered to the effective means that prevents that face gas from transfiniting along with both at home and abroad.For just for the workplace of back production, pre-coal mining body is carried out gas drainage to be needed the regular hour and guarantees, the extraction time, too short its effect can't be guaranteed, and the extraction overlong time can influence normally carrying out of working face extraction, therefore, how to solve the contradictory problems of the mutual restriction that exists in time between extraction and the back production, become the practical problems that solution is badly in need of in mine production.
As everyone knows, it is because the normal ventilation of gas utilization of gushing out from coal body can't in time efflux that face gas transfinites, thereby causing that gas density is too high in the air causes, therefore preventing that face gas from transfiniting should be from two aspect, the one, strengthen ventilation, the 2nd, reduce the gas amount of gushing out from coal body in the unit interval.Be subjected to the restriction of workplace wind speed, face air volume can not unrestrictedly strengthen, therefore how to reduce the gas amount of gushing out from coal body in the unit interval and become the key of dealing with problems, reach this purpose in advance, there are two kinds of approach available, the one, rely on the gas pumping technology, reduce gas bearing capacity and gas pressure in the coal body; The 2nd, rely on the water lock technology, the passage that gas is gushed out carries out shutoff, to reduce the outburst amount of gas in the unit interval, delays the gas speed of gushing out
[1]When first kind of approach of simple employing, because there are the contradiction of mutual restriction in time in extraction and back production, then become a kind of desirable approach with extraction technology and water lock technology use in conjunction this moment.
After gas drainage, utilize water to lock again and prevent that face gas from transfiniting, after the quality of its effect and the extraction in the coal body many factors such as the terminal pressure of gas, the type (pure water or certain solution) of injecting liquid, strength of fluid relevant, the test and the exploration of these relations all need experimentize by the instrument of special use, just be based on above idea, the author has carried out research and development designs first with regard to its experimental provision, offers help in the hope of the research of the controlling way that transfinites for face gas.
At present in the field, mine, utilize the water lock to prevent that face gas from transfiniting and still belong to a new direction, more there is not the experimental instrument and equipment of special use.
The utility model content
The purpose of this utility model provides under a kind of outer liquid intrusion condition water lock experimental provision, prevents the transfinite problem of experimental apparatus of face gas with the water lock that solves present no special use.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: described experimental provision comprises vacuum pump, high pressure connects flexible pipe, first operation valve, second operation valve, the 3rd operation valve, the 4th operation valve, the 5th operation valve, with reference to cylinder, sample cylinder, gas cylinder and pipeline, described experimental provision also comprises first tensimeter, second tensimeter, built-in outer liquid linkage and differential manometer, vacuum pump is connected flexible pipe with high pressure left port is communicated with, high pressure connects flexible pipe and is communicated with reference cylinder and sample cylinder respectively, built-in outer liquid linkage is arranged in the sample cylinder, high pressure connects flexible pipe and is provided with first operation valve, second operation valve, the 3rd operation valve and the 4th operation valve, first operation valve is between the vacuum pump and first tensimeter, second operation valve is between first tensimeter and second tensimeter, the 3rd operation valve is between second operation valve and second tensimeter, the 4th operation valve is connected between the right output port of flexible pipe at second tensimeter with high pressure, the right output port that high pressure connects flexible pipe is communicated with differential manometer, pipeline is provided with the 5th operation valve, gas cylinder is connected soft pipe connection by pipeline with high pressure, and the endpiece of pipeline is between second operation valve and the 3rd operation valve, be provided with first tensimeter that is used for the witness mark in-cylinder pressure with reference to cylinder, sample cylinder is provided with second tensimeter that is used for the measuring samples in-cylinder pressure, built-in outer liquid linkage is by the dress fluid cylinder, equispaced disperser, at least one steel ball, housing and coal sample bottle constitute, the coal sample bottle is located at the bottom in the housing, top and equispaced disperser that equispaced disperser is located at the coal sample bottle are fixed in the housing, the dress fluid cylinder be located on the equispaced disperser and dress fluid cylinder and housing affixed, the bottom of dress fluid cylinder is provided with at least one liquid outlet, at least one liquid outlet is provided with steel ball, and the quantity of steel ball is consistent with the quantity of liquid outlet.
The utlity model has following beneficial effect: the utility model simulates under the condition of the residing primal environment of coal containing methane gas, the intrusion of outer liquid, can satisfy the required conditional request of water lock experiment.The utility model can be according to testing the structure that need come adjusting gear, carry out other different classes of experiment, specifically comprise: desorption of mash gas experiment under the desorption of mash gas experiment under conventional gas adsorption-desorption experiment, band pressure desorption experiment, the condition of normal pressure, the outer liquid intrusion condition, liquid are put the gas experiment.The utility model not only can provide essential condition for the Basic Experiment Study in gas diaster prevention and control field, but also to promoting China's gas resources exploitation research to have certain positive role.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model, and Fig. 2 is the structural representation of built-in outer liquid linkage.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 and Fig. 2, the described experimental provision of present embodiment comprises vacuum pump 1, high pressure connects flexible pipe 2, first operation valve 3, second operation valve 4, the 3rd operation valve 5, the 4th operation valve 6, the 5th operation valve 7, with reference to cylinder 10, sample cylinder 11, gas cylinder 13 and pipeline 14, described experimental provision also comprises first tensimeter 8, second tensimeter 9, built-in outer liquid linkage 12 and differential manometer 15, vacuum pump 1 is connected flexible pipe 2 with high pressure left port is communicated with, high pressure connects flexible pipe 2 and is communicated with reference cylinder 10 and sample cylinder 11 respectively, built-in outer liquid linkage 12 is arranged in the sample cylinder 11, high pressure connects flexible pipe 2 and is provided with first operation valve 3, second operation valve 4, the 3rd operation valve 5 and the 4th operation valve 6, first operation valve 3 is between the vacuum pump 1 and first tensimeter 8, second operation valve 4 is between first tensimeter 8 and second tensimeter 9, the 3rd operation valve 5 is between second operation valve 4 and second tensimeter 9, the 4th operation valve 6 is connected between the right output port of flexible pipe 2 at second tensimeter 9 with high pressure, the right output port that high pressure connects flexible pipe 2 is communicated with differential manometer 15, pipeline 14 is provided with the 5th operation valve 7, gas cylinder 13 is connected flexible pipe 2 by pipeline 14 and is communicated with high pressure, and the endpiece of pipeline 14 is between second operation valve 4 and the 3rd operation valve 5, be provided with first tensimeter 8 that is used for witness mark cylinder 10 internal pressures with reference to cylinder 10, sample cylinder 11 is provided with second tensimeter 9 that is used for measuring samples cylinder 11 internal pressures, built-in outer liquid linkage 12 is by dress fluid cylinder 12-1, equispaced disperser 12-2, at least one steel ball 12-3, housing 12-4 and coal sample bottle 12-5 constitute, coal sample bottle 12-5 is located at the bottom in the housing 12-4, top and equispaced disperser 12-2 that equispaced disperser 12-2 is located at coal sample bottle 12-5 are fixed in the housing 12-4, dress fluid cylinder 12-1 be located at that equispaced disperser 12-2 goes up and dress fluid cylinder 12-1 and housing 12-4 affixed, the bottom of dress fluid cylinder 12-1 is provided with at least one liquid outlet 12-6, at least one liquid outlet 12-6 is provided with steel ball 12-3, and the quantity of steel ball 12-3 is consistent with the quantity of liquid outlet 12-6.
Embodiment two: in conjunction with Fig. 1 present embodiment is described, the bottom of the equispaced disperser 12-2 of present embodiment is laid with one group of dispersion hole 12-7, and this structure can evenly be spilt outer liquid.Other compositions and annexation are identical with embodiment one.
Principle of work: utilize the utility model to carry out water lock experimental study under the outer liquid intrusion condition, its basic experiment operating process is as follows:
1) coal sample that at first prepares certain particle size is prepared certain density outer liquid with stand-by simultaneously with standby, and outer liquid can be water, also can be to have certain density certain solution.Because outer liquid relies on the capillary resistance of outer liquid in the coal hole to realize to the water block effect of gas, therefore coal sample must keep original hole in it, so coal sample will be made the even lump coal that its profile is unit with cm, as 1cm, 2cm, 3cm etc., concrete which granularity that adopts is decided according to actual conditions.
2) outer liquid is put into dress fluid cylinder 12-1, the coal sample coal sample bottle 12-5 that packs into, whole built-in outer liquid linkage 12 is inserted in the sample cylinder 11, check the impermeability of total system, test with assurance and carry out in confined conditions.
3) with reference to the experimentation of coal high pressure isothermal adsorption experiment (GB/T19560-2008) mesohigh volumetric method, carry out vacuum outgas by 1 pair in vacuum pump with reference to cylinder 10 and sample cylinder 11 and (open first operation valve 3, second operation valve 4, the 3rd operation valve 5 and the 4th operation valve 6 this moment, the 5th operation valve 7 is closed), then inject helium and ask the entity volume V that surveys coal sample in the sample cylinder
sAnd the volume V of free space
f(close first operation valve 3, second operation valve 4, the 3rd operation valve 5 and the 4th operation valve 6 this moment, opens the 5th operation valve 7).
4) carry out vacuum outgas once more, then inject methane to pressure P
c, make the interior gas absorption of sample cylinder reach balance through 24h.
5) opening the 4th operation valve 6 makes the gas pressure in the sample cylinder 11 drop to environmental pressure P
z, connect to go up differential manometer 15 then, note the pressure differential deltap h of differential manometer through t after a while
T11, calculate pressure differential Δ P
T11=ρ g Δ h, thus the interior pressure P of sample cylinder obtained
T11=P
z+ Δ P
T11, then make the gas pressure in the sample cylinder 11 be reduced to environmental pressure P again by pulling out differential manometer 15 connecting pipes
z, reconnect differential manometer 15 again, and note differential manometer pressure differential deltap h again through t after a while
T12And calculate pressure P
T12So repeatedly, can obtain is being under the condition in the time interval with t, the pressure value P of differential manometer in its each time period
T1i, can calculate by following formula does not then have the desorption of mash gas amount Δ m in each time period under the outer liquid intrusion condition
1i
In the formula, Δ m
1iFor not having i t gas amount that the unit mass coal is desorbed in the time period under the outer liquid intrusion condition, cm
3/ g; V
mThe molar volume of-methane gas, 22.4 * 10
3Cm
3/ mol; M is the quality of coal sample, g; V
fBe the volume of free space in the sample cylinder, cm
3R is a gas law constant, R=8.314J/mol.K; T is an experimental temperature, K; Z
T1i, Z
zBe respectively P
T1iAnd P
zPairing methane gas compressibility factor during pressure.
Above experimental period totally continues 8h, then according to gained desorption of mash gas amount, draws out outside not having under the liquid intrusion condition, and when the coal containing methane gas body cuts and be exposed in the middle of the air, its desorption of mash gas burst size and time relation curve t-Δ m
1i
6) close the 4th operation valve 6, again sample cylinder 11 is injected methane to pressure P c, make sample cylinder 11 interior gas absorption reach balance through 24h.Then with angle of sample cylinder 11 inclinations, the steel ball 12-3 of built-in outer liquid linkage 12 breaks away from liquid outlet 12-6, and the outer liquid in the dress fluid cylinder 12-1 evenly is sprinkled upon on the coal sample by equispaced disperser 12-2, and then makes it reach stability through 24h.
7) opening the 4th operation valve 6 makes the gas pressure in the sample cylinder 11 drop to environmental pressure P
z, connect going up differential manometer 1513 then, with 5) and process is the same, calculates interior desorption of mash gas amount Δ m of each time period under the outer liquid intrusion condition by formula (1)
2i
Equally, above experimental period totally continues 8h, then according to gained desorption of mash gas amount, draw out outside having under the liquid intrusion condition, and when the coal containing methane gas body cuts and be exposed in the middle of the air, its desorption of mash gas burst size and time relation curve t-Δ m
2i
8) correlation curve t-Δ m
1iWith curve t-Δ m
2i, can divide of the influence of bleed lock to the desorption of mash gas releasing degree of coal containing methane gas body.
Claims (2)
1. water lock experimental provision under the outer liquid intrusion condition, described experimental provision comprises vacuum pump (1), high pressure connects flexible pipe (2), first operation valve (3), second operation valve (4), the 3rd operation valve (5), the 4th operation valve (6), the 5th operation valve (7), with reference to cylinder (10), sample cylinder (11), gas cylinder (13) and pipeline (14), it is characterized in that described experimental provision also comprises first tensimeter (8), second tensimeter (9), built-in outer liquid linkage (12) and differential manometer (15), vacuum pump (1) is connected flexible pipe (2) with high pressure left port is communicated with, high pressure connects flexible pipe (2) and is communicated with reference cylinder (10) and sample cylinder (11) respectively, built-in outer liquid linkage (12) is arranged in the sample cylinder (11), high pressure connects flexible pipe (2) and is provided with first operation valve (3), second operation valve (4), the 3rd operation valve (5) and the 4th operation valve (6), first operation valve (3) is positioned between vacuum pump (1) and first tensimeter (8), second operation valve (4) is positioned between first tensimeter (8) and second tensimeter (9), the 3rd operation valve (5) is positioned between second operation valve (4) and second tensimeter (9), the 4th operation valve (6) is positioned at second tensimeter (9) and is connected between the right output port of flexible pipe (2) with high pressure, the right output port that high pressure connects flexible pipe (2) is communicated with differential manometer (15), pipeline (14) is provided with the 5th operation valve (7), gas cylinder (13) is connected flexible pipe (2) by pipeline (14) and is communicated with high pressure, and the endpiece of pipeline (14) is positioned between second operation valve (4) and the 3rd operation valve (5), be provided with first tensimeter (8) that is used for witness mark cylinder (10) internal pressure with reference to cylinder (10), sample cylinder (11) is provided with second tensimeter (9) that is used for measuring samples cylinder (11) internal pressure, built-in outer liquid linkage (12) is by dress fluid cylinder (12-1), equispaced disperser (12-2), at least one steel ball (12-3), housing (12-4) and coal sample bottle (12-5) constitute, coal sample bottle (12-5) is located at the bottom in the housing (12-4), top and equispaced disperser (12-2) that equispaced disperser (12-2) is located at coal sample bottle (12-5) are fixed in the housing (12-4), (12-10 is located at that equispaced disperser (12-2) is gone up and dress fluid cylinder (12-1) is affixed with housing (12-4) to the dress fluid cylinder, the bottom of dress fluid cylinder (12-1) is provided with at least one liquid outlet (12-6), at least one liquid outlet (12-6) is provided with steel ball (12-3), and the quantity of steel ball (12-3) is consistent with the quantity of liquid outlet (12-6).
2. according to water lock experimental provision under the described outer liquid intrusion condition of claim 1, it is characterized in that the bottom of described equispaced disperser (12-2) is laid with one group of dispersion hole (12-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200459796U CN201984002U (en) | 2011-02-23 | 2011-02-23 | Water lock experimental device in case of external liquid invasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200459796U CN201984002U (en) | 2011-02-23 | 2011-02-23 | Water lock experimental device in case of external liquid invasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984002U true CN201984002U (en) | 2011-09-21 |
Family
ID=44611461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200459796U Expired - Fee Related CN201984002U (en) | 2011-02-23 | 2011-02-23 | Water lock experimental device in case of external liquid invasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201984002U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807001A (en) * | 2016-03-29 | 2016-07-27 | 中国石油大学(华东) | Method for evaluating water lock damage to oil reservoir |
| CN105974082A (en) * | 2016-06-12 | 2016-09-28 | 河南理工大学 | Gas constant pressure desorption simulation test method and device for coal containing gas in overpressure environment |
-
2011
- 2011-02-23 CN CN2011200459796U patent/CN201984002U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807001A (en) * | 2016-03-29 | 2016-07-27 | 中国石油大学(华东) | Method for evaluating water lock damage to oil reservoir |
| CN105807001B (en) * | 2016-03-29 | 2017-09-05 | 中国石油大学(华东) | A kind of evaluation method of oil reservoir water blocking damage |
| CN105974082A (en) * | 2016-06-12 | 2016-09-28 | 河南理工大学 | Gas constant pressure desorption simulation test method and device for coal containing gas in overpressure environment |
| CN105974082B (en) * | 2016-06-12 | 2018-01-19 | 河南理工大学 | A kind of Overpressure Condition coal containing methane gas gas constant pressure desorption analog detection method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102778554B (en) | Experimental device for improving permeability of shale gas storage layer in supercritical CO2 fracturing process | |
| CN103267722B (en) | A kind of pressure-bearing osmotic grouting reinforcement experiment device and method | |
| CN102053141B (en) | Method for testing desorption characteristic of externally added water on gas-containing coal body | |
| CN104297128A (en) | Triaxial stress seepage experiment device under high pressure water and subpressure loading condition | |
| CN202330236U (en) | Rock mechanical test device under gas seepage-creep combined action | |
| Hu et al. | Effects of gas adsorption on mechanical properties and erosion mechanism of coal | |
| CN106066291A (en) | CO2displacement shale gas and shale are to shale gas or CO2absorption analytic simulation test System and method for | |
| CN206439041U (en) | A kind of experimental provision for simulating the anti-reflection coal seam of carbon dioxide fracturing | |
| CN103822856B (en) | Coal body gas adsorption desorbing diffusion modeling experiments device under the conditions of different stress constraints | |
| CN201965070U (en) | Gas desorption experiment device under external liquid invasion condition | |
| CN205538584U (en) | Testing arrangement of steam driven coal body methane desorption seepage flow | |
| CN105842275B (en) | A kind of test method of steam drive coal gas desorption heat transfer | |
| CN105699273A (en) | Testing device and method of desorption and seepage of steam driven coal mass methane | |
| CN102706768A (en) | Gas desorption instrument | |
| CN204113194U (en) | A kind of gas drilling hole sealing device integrating pressure measurement and extraction function | |
| CN202900256U (en) | Draining device for measuring elevation angel hole coal bed gas pressure | |
| CN114152510A (en) | Test device and test method for water-rich broken rock stratum moving water grouting reinforcement model | |
| CN103913279A (en) | Method and device for testing leakproofness of oil cooler by mixing helium and air | |
| CN105784567A (en) | Equipment and method for testing relative permeability of rock cores | |
| CN113866069A (en) | Shale core permeability experiment device and method | |
| CN205719852U (en) | CO2displacement shale gas and shale are to shale gas or CO2absorption analytic simulation test device | |
| CN108195740A (en) | Carbon dioxide displacement methane device under the conditions of coal-bed flooding | |
| CN201984002U (en) | Water lock experimental device in case of external liquid invasion | |
| CN114352238A (en) | Device and method for testing flow conductivity of natural gas hydrate production increasing seam | |
| CN208254993U (en) | Deep mining gas pressure relief absorption-desorption experimental provision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20120223 |