CN104502546A - Experimental device and method for detecting sealing performance of sealing material of gas drainage drilling hole - Google Patents

Experimental device and method for detecting sealing performance of sealing material of gas drainage drilling hole Download PDF

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Publication number
CN104502546A
CN104502546A CN201510013908.0A CN201510013908A CN104502546A CN 104502546 A CN104502546 A CN 104502546A CN 201510013908 A CN201510013908 A CN 201510013908A CN 104502546 A CN104502546 A CN 104502546A
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CN
China
Prior art keywords
sealing
pipeline
experimental provision
gas discharge
experimental
Prior art date
Application number
CN201510013908.0A
Other languages
Chinese (zh)
Inventor
任青山
艾德春
彭斌
刘永志
李健
刘鸿
Original Assignee
六盘水师范学院
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.)
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Application filed by 六盘水师范学院 filed Critical 六盘水师范学院
Priority to CN201510013908.0A priority Critical patent/CN104502546A/en
Publication of CN104502546A publication Critical patent/CN104502546A/en

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Abstract

The invention discloses an experimental device for detecting a sealing performance of a sealing material of a gas drainage drilling hole. The experimental device comprises a material detection pipe (1) for containing the sealing material (14); the left and right ends of the material detection pipe (1) are sealed by a left flange disc (2) and a right flange disc (15) respectively; the left end of the material detection pipe (1) is communicated with a pressure gauge (3), a left valve (4) and an air compressor (6) through a left pipeline (5) in sequence; and the right end of the material detection pipe (1) is communicated with a right valve (8), a flow meter (9) and a water tank (11) by a right pipeline (10) in sequence. The invention further provides an experimental method using the device. According to the experimental device and method, the shrinkage performance of the material is detected through the penetrating performance of high-pressure gas, the concept is simple, the effect is direct, and the detection effect is relatively good; and the sealing material with the relatively high quality can be selected by adopting the device and the method, and the bad-quality sealing material is eliminated.

Description

Detect experimental provision and the method for gas discharge drilling sealing material sealing property
Technical field
The present invention relates to a kind of gas discharge drilling sealing material, specifically a kind of experimental provision and method detecting gas discharge drilling sealing material sealing property.
Background technology
The main method of China's coal-mine gas pumping is hole pumping and mining; The encapsulant of current hole pumping and mining is mainly polyurethanes expanded material, cement etc., but these materials generally have shrinkability, and the boring determining China's current down-hole extraction is generally leaked gas seriously, produces harmful effect to the extraction of gas and the safety in mine.
Generally lack now a kind of effective detection means and become the situation of leaking gas in boring to the shrinkability in the boring verifying these materials and along with the stream of time.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of experimental provision and the method that detect gas discharge drilling sealing material sealing property, carried out the shrinkage of test material by the permeance property of gases at high pressure, thinking is simple, effect is directly perceived.
To achieve these goals, the technical solution used in the present invention is: a kind of experimental provision detecting gas discharge drilling sealing material sealing property,
It comprises the material tests pipe for holding encapsulant;
The described left and right two ends of material tests pipe are respectively by left flange plate, right flangeseal;
Described material tests pipe left end is communicated with tensimeter, left valve and air compressor successively by left pipeline;
Described material tests pipe right-hand member is communicated with right valve, flowmeter and water tank successively by right pipeline.
Described left flange plate is by screw and rubber cushion sealing.
Described right ring flange is by screw and rubber cushion sealing.
Described material tests pipe two ends adopt cotton yarn to carry out shutoff simultaneously.
The end of described right pipeline stretches into below the liquid level of water tank.
Described material tests tube material detector tube material is PE material, and diameter gets the straight tube of 80-115mm.
Detect an experimental technique for gas discharge drilling sealing material sealing property, comprise the following steps:
1) be filled with after the encapsulant of certain mass being mixed in material tests pipe;
2) after material to be sealed solidifies completely; Open left valve, open air compressor, in experimental provision, be filled with pressure-air, regulate the power of air compressor, make the reading on tensimeter be 20kpa-30kpa;
3) whether open right valve, observe right pipeline has bubble to emerge in water tank, if there is bubble to emerge, and the reading of recording flowmeter, record per minute once, records 10 minutes continuously, and calculates the total gas flow q in 10 minutes;
4) if bubble-free is emerged in 10 minutes, illustrate that sealing is intact, do not have gas leak phenomenon, right pipeline gas flow q is designated as 0;
5) within every 5 days, carry out one-time detection by above-mentioned steps in 3 months, by comparing record, calculating the initial leakage time t of different sealing material, and drawing out the two dimensional image of leakage gas flow amount q and time t relation, to compare the sealing property between different materials.
Compared with existing apparatus and method, the boring under this experimental provision adopts material tests pipe to carry out simulation well, by the permeance property of gases at high pressure come test material shrinkage, its thinking is simple, effect directly perceived, has good Detection results; More high-quality encapsulant can be selected by this device and method, eliminate encapsulant inferior.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, material tests pipe, 2, left flange plate, 3, tensimeter, 4, left valve, 5, left pipeline, 6, air compressor, 7, screw, 8, right valve, 9, right rain glass, 10, right pipeline, 11, water tank, 12, rubber cushion, 13, cotton yarn, 14, encapsulant.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of experimental provision detecting gas discharge drilling sealing material sealing property,
It comprises the material tests pipe 1 for holding encapsulant 14, and wherein encapsulant 14 is full of material tests pipe 1;
The described left and right two ends of material tests pipe 1 seal respectively by left flange plate 2, right ring flange 15;
Described material tests pipe 1 left end is communicated with tensimeter 3, left valve 4 and air compressor 6 successively by left pipeline 5;
Described material tests pipe 1 right-hand member is communicated with right valve 8, flowmeter 9 and water tank 11 successively by right pipeline 10.
Further, described left flange plate 2 and right ring flange 15 are all sealed by screw 7 and rubber cushion 12, and sealing effect is simply effective.
Described material tests pipe 1 two ends adopt cotton yarn 13 to carry out shutoff simultaneously, keep sealing property further.
The end of described right pipeline 10 stretches into below the liquid level of water tank 11, also can insert bottom, and the pressure-air bubble display effect of carrying from air compressor 6 is better.
Described material tests pipe 1 material is PE material, and diameter gets the straight tube of 80-115mm, analogue simulation down-hole boring, and this pipe manufacturer is simple, and sealing is good.
Detect an experimental technique for gas discharge drilling sealing material sealing property, comprise the following steps:
1) be filled with in material tests pipe 1 after the encapsulant 14 of certain mass being mixed;
2) after material 14 to be sealed solidifies completely; Open left valve 4, open air compressor 6, in experimental provision, be filled with pressure-air, gas drainage negative pressure because of down-hole is between 10-30Kpa, regulate the power of air compressor 6, make the reading on tensimeter 3 be 20kpa-30kpa, be used for real simulation down-hole pressure;
3) whether open right valve 8, observe right pipeline 10 has bubble to emerge in water tank 11, if there is bubble to emerge, and the reading of recording flowmeter 9, record per minute once, records 10 minutes continuously, and calculates the total gas flow q in 10 minutes;
4) if bubble-free is emerged in 10 minutes, illustrate that sealing is intact, do not have gas leak phenomenon, right pipeline 10 gas flow q is designated as 0;
5) within every 5 days, carry out one-time detection by above-mentioned steps in 3 months, by comparing record, calculating the initial leakage time t of different sealing material, and drawing out the two dimensional image of leakage gas flow amount q and time t relation, to compare the sealing property between different materials.
In sum, this device carrys out the shrinkage of test material by the permeance property of gases at high pressure, its thinking is simple, effect directly perceived, has good Detection results; More high-quality encapsulant can be selected by this device and method, eliminate encapsulant inferior.

Claims (7)

1. detect an experimental provision for gas discharge drilling sealing material sealing property, it is characterized in that,
It comprises the material tests pipe (1) for holding encapsulant (14);
Described material tests pipe (1) left and right two ends are respectively by left flange plate (2), right ring flange (15) sealing;
Described material tests pipe (1) left end is communicated with tensimeter (3), left valve (4) and air compressor (6) successively by left pipeline (5);
Described material tests pipe (1) right-hand member is communicated with right valve (8), flowmeter (9) and water tank (11) successively by right pipeline (10).
2. a kind of experimental provision detecting gas discharge drilling sealing material sealing property according to claim 1, is characterized in that, described left flange plate (2) is by screw (7) and rubber cushion (12) sealing.
3. a kind of experimental provision detecting gas discharge drilling sealing material sealing property according to claim 1 and 2, is characterized in that, described right ring flange (15) is by screw (7) and rubber cushion (12) sealing.
4. a kind of experimental provision detecting gas discharge drilling sealing material sealing property according to claim 1, is characterized in that, described material tests pipe (1) two ends adopt cotton yarn (13) to carry out shutoff simultaneously.
5. a kind of experimental provision detecting gas discharge drilling sealing material sealing property according to claim 1, is characterized in that, the end of described right pipeline (10) stretches into below the liquid level of water tank (11).
6. a kind of experimental provision detecting gas discharge drilling sealing material sealing property according to claim 1 or 4, is characterized in that, described material tests pipe (1) material is PE material, and diameter gets the straight tube of 80-115mm.
7. detect an experimental technique for gas discharge drilling sealing material sealing property, it is characterized in that, comprise the following steps:
1) be filled with in material tests pipe (1) after the encapsulant (14) of certain mass being mixed;
2) after material to be sealed (14) solidifies completely; Open left valve (4), open air compressor (6), in experimental provision, be filled with pressure-air, regulate the power of air compressor (6), make the reading on tensimeter (3) be 20kpa-30kpa;
3) right valve (8) is opened, whether observe right pipeline (10) has bubble to emerge in water tank (11), if there is bubble to emerge, the reading of recording flowmeter (9), record per minute once, continuous record 10 minutes, and calculate the total gas flow q in 10 minutes;
4) if bubble-free is emerged in 10 minutes, illustrate that sealing is intact, do not have gas leak phenomenon, right pipeline (10) gas flow q is designated as 0;
5) within every 5 days, carry out one-time detection by above-mentioned steps in 3 months, by comparing record, calculating the initial leakage time t of different sealing material, and drawing out the two dimensional image of leakage gas flow amount q and time t relation, to compare the sealing property between different materials.
CN201510013908.0A 2015-01-13 2015-01-13 Experimental device and method for detecting sealing performance of sealing material of gas drainage drilling hole CN104502546A (en)

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Application Number Priority Date Filing Date Title
CN201510013908.0A CN104502546A (en) 2015-01-13 2015-01-13 Experimental device and method for detecting sealing performance of sealing material of gas drainage drilling hole

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547962A (en) * 2016-01-11 2016-05-04 河南理工大学 One-dimensional simulation device for migration and transformation of solutes in underground water under high water pressure action
CN105954172A (en) * 2016-05-19 2016-09-21 西安科技大学 Coal bed liquid CO2 fracturing permeability improvement experimental device and method
CN106092457A (en) * 2016-08-23 2016-11-09 成都欧浦特控制阀门有限公司 A kind of detecting device for sealing property of ball valves

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JP2000214161A (en) * 1999-01-25 2000-08-04 Maruto Seisakusho:Kk Water-permeability/gas-permeability test device and seal structure of specimen for it
DE10031334A1 (en) * 1999-07-01 2001-01-18 Frank Rinn Sealing drill resistance testing equipment so that wood can be tested under water by generating internal pressure equal to measured outside pressure
CN102435537A (en) * 2011-11-21 2012-05-02 中国石油大学(华东) Measuring device for gas permeability of coal rock core
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CN103940719A (en) * 2014-04-15 2014-07-23 西安科技大学 Coal body permeability characteristic testing system and method
CN204314282U (en) * 2015-01-13 2015-05-06 六盘水师范学院 Detect the experimental provision of gas discharge drilling sealing material sealing property

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000214161A (en) * 1999-01-25 2000-08-04 Maruto Seisakusho:Kk Water-permeability/gas-permeability test device and seal structure of specimen for it
DE10031334A1 (en) * 1999-07-01 2001-01-18 Frank Rinn Sealing drill resistance testing equipment so that wood can be tested under water by generating internal pressure equal to measured outside pressure
CN102435537A (en) * 2011-11-21 2012-05-02 中国石油大学(华东) Measuring device for gas permeability of coal rock core
CN102645396A (en) * 2012-05-11 2012-08-22 太原理工大学 Test method for improving coal rock permeability and device thereof
CN103940719A (en) * 2014-04-15 2014-07-23 西安科技大学 Coal body permeability characteristic testing system and method
CN204314282U (en) * 2015-01-13 2015-05-06 六盘水师范学院 Detect the experimental provision of gas discharge drilling sealing material sealing property

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Title
郝志勇: "材料复合技术及其在钻孔密封中的应用研究", 《中国博士学位论文全文数据库(电子期刊)》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547962A (en) * 2016-01-11 2016-05-04 河南理工大学 One-dimensional simulation device for migration and transformation of solutes in underground water under high water pressure action
CN105547962B (en) * 2016-01-11 2018-11-27 河南理工大学 High hydraulic pressure acts on the One-dimensional simulation device of lower solute migration conversion in underground water
CN105954172A (en) * 2016-05-19 2016-09-21 西安科技大学 Coal bed liquid CO2 fracturing permeability improvement experimental device and method
CN106092457A (en) * 2016-08-23 2016-11-09 成都欧浦特控制阀门有限公司 A kind of detecting device for sealing property of ball valves

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Application publication date: 20150408