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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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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sealing
experimental device
material detection
gas drainage
detection tube
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任青山
艾德春
彭斌
刘永志
李健
刘鸿
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Liupanshui Normal University
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Abstract

本发明公开了一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,它包括用于盛放密封材料(14)的材料检测管(1);所述的材料检测管(1)左、右两端分别通过左法兰盘(2)、右法兰盘(15)密封;所述的材料检测管(1)左端通过左管道(5)依次连通压力表(3)、左阀门(4)和空气压缩机(6);所述的材料检测管(1)右端通过右管道(10)依次连通右阀门(8)、流量计(9)和水箱(11);同时还包括使用本装置实验方法,本实验装置及方法通过高压气体的渗透性能来检测材料的收缩性能、其思路简单、效果直观,具有较好的检测效果;通过该装置及方法可以选择出更加高质量的密封材料,淘汰劣质的密封材料。

The invention discloses an experimental device for detecting the sealing performance of gas drainage drilling sealing materials, which includes a material detection tube (1) for containing the sealing material (14); the material detection tube (1) left, The right two ends are respectively sealed by the left flange (2) and the right flange (15); the left end of the material detection pipe (1) is sequentially connected to the pressure gauge (3) and the left valve (4) through the left pipe (5). ) and air compressor (6); the right end of the material detection tube (1) is connected to the right valve (8), flow meter (9) and water tank (11) in turn through the right pipe (10); it also includes the use of this device Experimental method, this experimental device and method detects the shrinkage performance of materials through the permeability of high-pressure gas. Eliminate inferior sealing materials.

Description

检测瓦斯抽放钻孔密封材料密封性能的实验装置及方法Experimental device and method for testing the sealing performance of gas drainage drilling sealing materials

技术领域 technical field

本发明涉及一种瓦斯抽放钻孔密封材料,具体是一种检测瓦斯抽放钻孔密封材料密封性能的实验装置及方法。 The invention relates to a gas drainage drilling sealing material, in particular to an experimental device and method for testing the sealing performance of the gas drainage drilling sealing material.

背景技术 Background technique

我国煤矿瓦斯抽采的主要方法是钻孔抽采;目前钻孔抽采的密封材料主要为聚氨酯类发泡材料、水泥等,但这些材料普遍具有收缩性,决定了我国目前井下抽采的钻孔普遍漏气严重,对瓦斯的抽采和矿山的安全产生不良影响。 The main method of gas extraction in coal mines in my country is borehole drainage; the sealing materials for borehole drainage are mainly polyurethane foam materials, cement, etc., but these materials are generally shrinkable, which determines the current underground gas extraction in my country. The gas leaks in the holes are generally serious, which has a negative impact on gas drainage and mine safety.

现在普遍缺乏一种有效的检测手段来验证这些材料的钻孔内的收缩性及随着时间的流变在钻孔内漏气的状况。 There is generally a lack of an effective detection method to verify the shrinkage of these materials in the borehole and the air leakage in the borehole with the rheology of time.

发明内容 Contents of the invention

针对上述现有技术存在的问题,本发明提供一种检测瓦斯抽放钻孔密封材料密封性能的实验装置及方法,通过高压气体的渗透性能来检测材料的收缩性能,思路简单、效果直观。 In view of the above-mentioned problems in the prior art, the present invention provides an experimental device and method for detecting the sealing performance of gas drainage drilling sealing materials. The shrinkage performance of the material is detected through the permeability of high-pressure gas, and the idea is simple and the effect is intuitive.

为了实现上述目的,本发明采用的技术方案是:一种检测瓦斯抽放钻孔密封材料密封性能的实验装置, In order to achieve the above object, the technical solution adopted in the present invention is: an experimental device for detecting the sealing performance of the gas drainage drilling sealing material,

它包括用于盛放密封材料的材料检测管; It includes a material detection tube for holding the sealing material;

所述的材料检测管左、右两端分别通过左法兰盘、右法兰盘密封; The left and right ends of the material detection tube are respectively sealed by the left flange and the right flange;

所述的材料检测管左端通过左管道依次连通压力表、左阀门和空气压缩机; The left end of the material detection tube is connected to the pressure gauge, the left valve and the air compressor in turn through the left pipeline;

所述的材料检测管右端通过右管道依次连通右阀门、流量计和水箱。 The right end of the material detection pipe is sequentially connected to the right valve, the flow meter and the water tank through the right pipeline.

所述的左法兰盘通过螺丝钉和胶垫密封。 The left flange is sealed by screws and rubber pads.

所述的右法兰盘通过螺丝钉和胶垫密封。 The right flange is sealed by screws and rubber pads.

所述的材料检测管两端同时采用棉纱进行封堵。 Both ends of the material detection tube are simultaneously blocked with cotton yarn.

所述的右管道的末端伸入水箱的液面以下。 The end of described right pipeline stretches below the liquid level of water tank.

所述的材料检测管材料检测管材质为PE材质,直径取80-115mm的直管。 The material detection tube of the material detection tube is made of PE material, and the diameter is a straight tube of 80-115mm.

一种检测瓦斯抽放钻孔密封材料密封性能的实验方法,包括以下步骤: An experimental method for detecting the sealing performance of a gas drainage drilling sealing material, comprising the following steps:

1)将一定质量的密封材料混合均匀后充入材料检测管中; 1) Mix a certain quality of sealing material evenly and fill it into the material detection tube;

2)待密封材料完全固化后;打开左阀门,开启空气压缩机,向实验装置中充入高压空气,调节空气压缩机的功率,使得压力表上的读数为20kpa-30kpa; 2) After the sealing material is completely solidified; open the left valve, turn on the air compressor, fill the experimental device with high-pressure air, and adjust the power of the air compressor so that the reading on the pressure gauge is 20kpa-30kpa;

3)打开右阀门,观察右管路在水箱内是否有气泡冒出,若有气泡冒出,记录流量计的读数,每分钟记录一次,连续记录10分钟,并计算10分钟内的总的气体流量q; 3) Open the right valve and observe whether there are air bubbles in the right pipeline in the water tank. If there are air bubbles, record the reading of the flow meter, record once every minute, record continuously for 10 minutes, and calculate the total gas volume within 10 minutes flow q;

4)若在10分钟内无气泡冒出,说明密封完好,没有漏气现象,右管路气体流量q记为0; 4) If no air bubbles emerge within 10 minutes, it means that the seal is intact and there is no air leakage, and the gas flow q of the right pipeline is recorded as 0;

5)按上述步骤3个月内每5天进行一次检测,通过比较记录,计算出不同密封材料的初始泄露时间t,并绘制出泄露气体流量q与时间t关系的二维图像,以便比较不同材料间的密封性能。 5) According to the above steps, conduct a test every 5 days within 3 months, and calculate the initial leakage time t of different sealing materials by comparing the records, and draw a two-dimensional image of the relationship between the leakage gas flow q and time t, so as to compare different sealing materials. Sealing properties between materials.

与现有的装置和方法相比,本实验装置采用材料检测管来模拟井下的钻孔,通过高压气体的渗透性能来检测材料的收缩性能、其思路简单、效果直观,具有较好的检测效果;通过该装置及方法可以选择出更加高质量的密封材料,淘汰劣质的密封材料。 Compared with the existing devices and methods, this experimental device uses material detection tubes to simulate downhole drilling, and detects the shrinkage performance of materials through the permeability of high-pressure gas. The idea is simple, the effect is intuitive, and it has better detection results. ; Through the device and method, higher quality sealing materials can be selected, and inferior sealing materials can be eliminated.

附图说明 Description of drawings

图1是本发明结构示意图。 Fig. 1 is a schematic diagram of the structure of the present invention.

图中:1、材料检测管,2、左法兰盘,3、压力表,4、左阀门,5、左管路,6、空气压缩机,7、螺丝钉,8、右阀门,9、右气压表,10、右管路,11、水箱,12、胶垫,13、棉纱,14、密封材料。 In the figure: 1. Material detection tube, 2. Left flange, 3. Pressure gauge, 4. Left valve, 5. Left pipeline, 6. Air compressor, 7. Screw, 8. Right valve, 9. Right Barometer, 10, right pipeline, 11, water tank, 12, rubber pad, 13, cotton yarn, 14, sealing material.

具体实施方式 Detailed ways

下面结合附图对本发明作进一步说明。 The present invention will be further described below in conjunction with accompanying drawing.

如图1所示,一种检测瓦斯抽放钻孔密封材料密封性能的实验装置, As shown in Figure 1, an experimental device for testing the sealing performance of gas drainage drilling sealing materials,

它包括用于盛放密封材料14的材料检测管1,其中密封材料14充满材料检测管1; It includes a material detection tube 1 for containing a sealing material 14, wherein the sealing material 14 is filled with the material detection tube 1;

所述的材料检测管1左、右两端分别通过左法兰盘2、右法兰盘15密封; The left and right ends of the material detection tube 1 are respectively sealed by the left flange 2 and the right flange 15;

所述的材料检测管1左端通过左管道5依次连通压力表3、左阀门4和空气压缩机6; The left end of the material detection tube 1 is connected to the pressure gauge 3, the left valve 4 and the air compressor 6 in turn through the left pipeline 5;

所述的材料检测管1右端通过右管道10依次连通右阀门8、流量计9和水箱11。 The right end of the material detection pipe 1 communicates with the right valve 8 , the flow meter 9 and the water tank 11 through the right pipe 10 in sequence.

进一步,所述的左法兰盘2和右法兰盘15均通过螺丝钉7和胶垫12密封,该密封效果简单有效。 Further, the left flange 2 and the right flange 15 are sealed by screws 7 and rubber pads 12, and the sealing effect is simple and effective.

所述的材料检测管1两端同时采用棉纱13进行封堵,进一步保持密封性能。 Both ends of the material detection tube 1 are blocked with cotton yarn 13 to further maintain the sealing performance.

所述的右管道10的末端伸入水箱11的液面以下即可,还可插入底部,从空气压缩机6输送的高压空气气泡显示效果更佳。 The end of the right pipeline 10 can be inserted below the liquid level of the water tank 11, and can also be inserted into the bottom, and the high-pressure air bubbles delivered from the air compressor 6 can show better results.

所述的材料检测管1材质为PE材质,直径取80-115mm的直管,仿真模拟井下的钻孔用的,该管制造简单,密封性佳。 The material detection pipe 1 is made of PE material, a straight pipe with a diameter of 80-115mm, and is used for simulating downhole drilling. The pipe is easy to manufacture and has good sealing performance.

一种检测瓦斯抽放钻孔密封材料密封性能的实验方法,包括以下步骤: An experimental method for detecting the sealing performance of a gas drainage drilling sealing material, comprising the following steps:

1)将一定质量的密封材料14混合均匀后充入材料检测管1中; 1) Mix a certain quality of sealing material 14 evenly and fill it into the material detection tube 1;

2)待密封材料14完全固化后;打开左阀门4,开启空气压缩机6,向实验装置中充入高压空气,因井下的瓦斯抽放负压为10-30Kpa之间,调节空气压缩机6的功率,使得压力表3上的读数为20kpa-30kpa,用来真实模拟井下压力; 2) After the sealing material 14 is completely solidified; open the left valve 4, turn on the air compressor 6, and fill the experimental device with high-pressure air. Since the negative pressure of the underground gas drainage is between 10-30Kpa, adjust the air compressor 6 power, so that the reading on the pressure gauge 3 is 20kpa-30kpa, which is used to truly simulate the downhole pressure;

3)打开右阀门8,观察右管路10在水箱11内是否有气泡冒出,若有气泡冒出,记录流量计9的读数,每分钟记录一次,连续记录10分钟,并计算10分钟内的总的气体流量q; 3) Open the right valve 8 and observe whether there are air bubbles in the right pipeline 10 in the water tank 11. If there are air bubbles, record the reading of the flow meter 9 once every minute for 10 minutes, and calculate the flow rate within 10 minutes. The total gas flow rate q;

4)若在10分钟内无气泡冒出,说明密封完好,没有漏气现象,右管路10气体流量q记为0; 4) If no air bubbles emerge within 10 minutes, it means that the seal is intact and there is no air leakage, and the gas flow q of the right pipeline 10 is recorded as 0;

5)按上述步骤3个月内每5天进行一次检测,通过比较记录,计算出不同密封材料的初始泄露时间t,并绘制出泄露气体流量q与时间t关系的二维图像,以便比较不同材料间的密封性能。 5) According to the above steps, conduct a test every 5 days within 3 months, and calculate the initial leakage time t of different sealing materials by comparing the records, and draw a two-dimensional image of the relationship between the leakage gas flow q and time t, so as to compare different sealing materials. Sealing properties between materials.

综上所述,本装置通过高压气体的渗透性能来检测材料的收缩性能、其思路简单、效果直观,具有较好的检测效果;通过该装置及方法可以选择出更加高质量的密封材料,淘汰劣质的密封材料。 To sum up, this device detects the shrinkage performance of materials through the permeability of high-pressure gas. Poor quality sealing material.

Claims (7)

1.一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,其特征在于, 1. An experimental device for detecting the sealing performance of gas drainage drilling sealing material, characterized in that, 它包括用于盛放密封材料(14)的材料检测管(1); It includes a material detection tube (1) for containing sealing material (14); 所述的材料检测管(1)左、右两端分别通过左法兰盘(2)、右法兰盘(15)密封; The left and right ends of the material detection tube (1) are respectively sealed by the left flange (2) and the right flange (15); 所述的材料检测管(1)左端通过左管道(5)依次连通压力表(3)、左阀门(4)和空气压缩机(6); The left end of the material detection tube (1) is sequentially connected to the pressure gauge (3), the left valve (4) and the air compressor (6) through the left pipe (5); 所述的材料检测管(1)右端通过右管道(10)依次连通右阀门(8)、流量计(9)和水箱(11)。 The right end of the material detection pipe (1) is sequentially connected to the right valve (8), flow meter (9) and water tank (11) through the right pipe (10). 2. 根据权利要求1所述的一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,其特征在于,所述的左法兰盘(2)通过螺丝钉(7)和胶垫(12)密封。 2. An experimental device for detecting the sealing performance of gas drainage drilling sealing materials according to claim 1, characterized in that, the left flange (2) is passed through the screw (7) and the rubber pad (12) seal. 3.根据权利要求1或2所述的一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,其特征在于,所述的右法兰盘(15)通过螺丝钉(7)和胶垫(12)密封。 3. An experimental device for testing the sealing performance of gas drainage drilling sealing materials according to claim 1 or 2, characterized in that the right flange (15) is connected by screws (7) and rubber pads ( 12) Sealing. 4.根据权利要求1所述的一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,其特征在于,所述的材料检测管(1)两端同时采用棉纱(13)进行封堵。 4. An experimental device for detecting the sealing performance of gas drainage drilling sealing materials according to claim 1, characterized in that, both ends of the material detection tube (1) are blocked with cotton yarn (13) at the same time. 5.根据权利要求1所述的一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,其特征在于,所述的右管道(10)的末端伸入水箱(11)的液面以下。 5. An experimental device for testing the sealing performance of gas drainage drilling sealing materials according to claim 1, characterized in that the end of the right pipe (10) extends below the liquid level of the water tank (11). 6.根据权利要求1或4所述的一种检测瓦斯抽放钻孔密封材料密封性能的实验装置,其特征在于,所述的材料检测管(1)材质为PE材质,直径取80-115mm的直管。 6. An experimental device for detecting the sealing performance of gas drainage drilling sealing materials according to claim 1 or 4, characterized in that, the material detection tube (1) is made of PE material, with a diameter of 80-115mm straight tube. 7.一种检测瓦斯抽放钻孔密封材料密封性能的实验方法,其特征在于,包括以下步骤: 7. An experimental method for detecting the sealing performance of gas drainage drilling sealing material, is characterized in that, comprises the following steps: 1)将一定质量的密封材料(14)混合均匀后充入材料检测管(1)中; 1) Mix a certain quality of sealing material (14) evenly and fill it into the material detection tube (1); 2)待密封材料(14)完全固化后;打开左阀门(4),开启空气压缩机(6),向实验装置中充入高压空气,调节空气压缩机(6)的功率,使得压力表(3)上的读数为20kpa-30kpa; 2) After the sealing material (14) is completely solidified; open the left valve (4), turn on the air compressor (6), fill the experimental device with high-pressure air, and adjust the power of the air compressor (6), so that the pressure gauge ( 3) The reading on the screen is 20kpa-30kpa; 3)打开右阀门(8),观察右管路(10)在水箱(11)内是否有气泡冒出,若有气泡冒出,记录流量计(9)的读数,每分钟记录一次,连续记录10分钟,并计算10分钟内的总的气体流量q; 3) Open the right valve (8), observe whether there are bubbles coming out of the right pipeline (10) in the water tank (11), if there are bubbles coming out, record the reading of the flow meter (9), record once per minute, and record continuously 10 minutes, and calculate the total gas flow q within 10 minutes; 4)若在10分钟内无气泡冒出,说明密封完好,没有漏气现象,右管路(10)气体流量q记为0; 4) If no air bubbles emerge within 10 minutes, it means that the seal is intact and there is no air leakage, and the gas flow q of the right pipeline (10) is recorded as 0; 5)按上述步骤3个月内每5天进行一次检测,通过比较记录,计算出不同密封材料的初始泄露时间t,并绘制出泄露气体流量q与时间t关系的二维图像,以便比较不同材料间的密封性能。 5) According to the above steps, conduct a test every 5 days within 3 months, and calculate the initial leakage time t of different sealing materials by comparing the records, and draw a two-dimensional image of the relationship between the leakage gas flow q and time t, so as to compare different sealing materials. Sealing properties between 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 Pending CN104502546A (en)

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Application publication date: 20150408