CN107642645A - A kind of compound goaf coal spontaneous combustion detection gas sampling pipe and preparation method thereof - Google Patents
A kind of compound goaf coal spontaneous combustion detection gas sampling pipe and preparation method thereof Download PDFInfo
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 37
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 37
- 238000005070 sampling Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 150000001875 compounds Chemical class 0.000 title claims abstract 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims abstract description 20
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 19
- 239000002216 antistatic agent Substances 0.000 claims description 12
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- 238000002844 melting Methods 0.000 claims description 4
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- 238000004519 manufacturing process Methods 0.000 abstract description 27
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract 2
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- 230000000694 effects Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 41
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 16
- 239000005977 Ethylene Substances 0.000 description 16
- 125000003118 aryl group Chemical group 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
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- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
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- 239000000203 mixture Substances 0.000 description 2
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Abstract
Description
技术领域technical field
本发明属于煤矿安全检测装备领域，其涉及一种复合型采空区煤自燃检测气体取样管道。The invention belongs to the field of coal mine safety detection equipment, and relates to a composite gas sampling pipeline for coal spontaneous combustion detection in goafs.
背景技术Background technique
“安全第一，预防为主，综合治理。”是目前我国安全生产方针。安全在于预防，安全是企业一切根本，唯有安全，企业才能生存、生产和发展。安全问题涉及到各行各业，牵涉到每一个家庭，牵动着每一个人的心。近年来安全问题越来越得到了社会各界的广泛关注，尤其是煤矿安全生产。在成千上万的煤矿工作者的共同努力下，近年来煤矿安全形式得到一定好转，但安全管理却一刻也不能松懈。我国大部分煤矿属于井工开采，地下开采条件复杂多变，安全管理精细化程度还有待进一步提高。在实际生产中，煤矿事故的引起的因素：自然因素和人为因素，自然因素包含：水、火、瓦斯、顶板、粉尘以及地质构造等，而火煤矿生产过程中需要杜绝一切火源—明火的产生。杜绝内因火源和外因明火，最大限度的预防安全事故的发生。"Safety first, prevention first, comprehensive management." is the current safety production policy in our country. Safety lies in prevention, and safety is the foundation of all enterprises. Only with safety can enterprises survive, produce and develop. Safety issues involve all walks of life, involve every family, and affect everyone's heart. In recent years, safety issues have drawn more and more attention from all walks of life, especially coal mine safety production. With the joint efforts of thousands of coal mine workers, coal mine safety has been improved in recent years, but safety management cannot be relaxed for a moment. Most of the coal mines in my country belong to underground mining, the underground mining conditions are complex and changeable, and the degree of refinement of safety management needs to be further improved. In actual production, coal mine accidents are caused by natural factors and human factors. Natural factors include: water, fire, gas, roof, dust, and geological structures. In the production process of coal mines, it is necessary to eliminate all sources of fire—open flames. produce. Eliminate internal fire sources and external open flames, and prevent safety accidents to the greatest extent.
目前煤矿自燃发火程度鉴定取样管道存在的问题：我国煤矿开采过程中，具有煤自燃的煤矿占比很大，在具有煤自燃的矿井生产过程中，为了煤矿的安全生产，必须进行采空区煤自燃发火程度鉴定，这就需要在采空区进行煤自燃火灾检测取样的采空区埋管取样管道，目前采空区埋管取样管道，多采用的无缝钢管和塑料高压管，无缝钢管在使用的过程中，易腐蚀、具有拖动容易产生火花，容易被跨落的岩石压坏的缺点，塑料高压管在使用过程中，PE管容易产生乙烯、PVC管容易产生芳香烃类，而乙烯和芳香烃正是判断煤矿采空区煤自燃发火进展程度的敏感指标性气体。如果PE管、PVC管中没有加入抗静电剂，容易产生静电，煤矿生产的特点要求矿井下使用阻燃抗静电的管道、线缆、风筒布等。At present, there are problems in the sampling pipelines for the identification of coal mine spontaneous combustion and fire degree: in the process of coal mine mining in my country, coal mines with coal spontaneous combustion account for a large proportion. Spontaneous combustion degree identification, which requires coal spontaneous combustion fire detection and sampling in the goaf buried pipe sampling pipeline, the current goaf buried pipe sampling pipeline, mostly used seamless steel pipe and plastic high pressure pipe, seamless steel pipe In the process of use, it is easy to corrode, has the disadvantages of easy to generate sparks when dragging, and is easy to be crushed by falling rocks. During the use of plastic high-pressure pipes, PE pipes are prone to produce ethylene, and PVC pipes are prone to produce aromatic hydrocarbons. Ethylene and aromatic hydrocarbons are sensitive indicator gases for judging the progress of coal spontaneous combustion in gobs of coal mines. If antistatic agents are not added to PE pipes and PVC pipes, static electricity is likely to be generated. The characteristics of coal mine production require the use of flame-retardant and antistatic pipes, cables, and air ducts in underground mines.
煤矿井下由于煤层的开采使得未开采的煤层产生裂隙漏风或者采空区漏风而使得煤自然氧化发生自燃现象。《煤矿安全规程》规定：在煤矿生产安全管理中的，要求具有煤自燃发火倾向性的煤层，必须采用能进行连续监测采空区气体成分变化的监测系统，必须建立自然发火预测预报制度，且要有专人对采空区煤层自然发火标志性气体取样，进行检测煤层自然发火标志性气体成分的变化来确定煤层自燃发火的进程，以便采取必要的防灭火措施，然而，目前生产实际中，取样管道采用铸铁管和无缝钢管进行埋管取样，铸铁管和无缝钢管容易被采空区跨落的顶板压坏，而且在拖动铸铁管和无缝钢管时容易产生火花，若瓦斯浓度超标，容易发生瓦斯爆炸，存在巨大的安全隐患，煤矿安全生产管理中要杜绝一切明火（含火星，瓦斯的引燃能量是0.24焦耳）；采用塑料管，塑料管在使用过程中产生乙烯，乙烯是判断煤自燃发火的指标性气体，引起煤自燃检测取样的指标性气体失真的问题，而产生的不必要的人力、物力的浪费和对生产进度的影响，为了解决上述问题，构思研究了一种复合型采空区煤自燃检测气体取样管道来代替铸铁管和无缝钢管进行埋管作为指标性气体分析的取样管道，以便达到提高煤矿的安全生产和提高煤矿的经济效益的目的。Under the coal mine, due to the mining of the coal seam, the unmined coal seam produces crack air leakage or goaf air leakage, which causes the natural oxidation of coal and spontaneous combustion. The "Coal Mine Safety Regulations" stipulates: In the safety management of coal mine production, coal seams that are required to have a coal spontaneous combustion tendency must adopt a monitoring system that can continuously monitor the change of gas composition in the goaf, and a spontaneous combustion prediction and forecasting system must be established, and It is necessary to have a special person to take samples of the coal seam spontaneous combustion symbol gas in the goaf, and to detect the change of the coal seam spontaneous combustion symbol gas composition to determine the process of coal seam spontaneous combustion and fire, so as to take necessary fire prevention measures. However, in the current production practice, sampling Cast iron pipes and seamless steel pipes are used for buried pipe sampling. Cast iron pipes and seamless steel pipes are easily crushed by the roof falling across the goaf, and sparks are likely to be generated when the cast iron pipes and seamless steel pipes are dragged. If the gas concentration exceeds the standard , gas explosion is prone to occur, and there is a huge potential safety hazard. In the safety production management of coal mines, all open flames (including sparks, and the ignition energy of gas is 0.24 joules) should be eliminated; plastic pipes are used, and ethylene is produced during use of plastic pipes. Ethylene is Judging the index gas of spontaneous combustion of coal will cause the problem of distortion of the index gas of coal spontaneous combustion detection and sampling, resulting in unnecessary waste of manpower and material resources and the impact on production progress. In order to solve the above problems, a conceived study The composite goaf coal spontaneous combustion detection gas sampling pipeline replaces cast iron pipes and seamless steel pipes for buried pipes as sampling pipelines for index gas analysis, so as to achieve the purpose of improving the safety of coal mine production and improving the economic benefits of coal mines.
发明内容Contents of the invention
本发明要解决的技术问题是：提供一种复合型采空区煤自燃检测气体取样管道：采用两种不同材质做成组合性套管，奥氏不绣钢内套管和加抗静电剂的PVC或PE硬质外套管，来解决现有煤矿生产过程中存在的煤层自然发火指标性气体取样管道存在的问题：目前采空区埋管取样管道，多采用的无缝钢管和塑料高压管，无缝钢管在使用的过程中，易腐蚀、具有拖动容易产生火花（煤矿生产要求严格控制一切火源或者火花），容易被跨落的岩石压坏的缺点，塑料高压管在使用过程中，PE管容易产生乙烯、PVC管容易产生芳香烃类，而乙烯和芳香烃正是判断煤矿采空区煤自燃发火进展程度的敏感指标性气体。如果PE管、PVC管中没有加入抗静电剂，容易产生静电，煤矿生产的特点要求矿井下使用阻燃抗静电的管道、线缆、风筒布等。The technical problem to be solved by the present invention is: to provide a composite goaf coal spontaneous combustion detection gas sampling pipeline: two different materials are used to make a combined sleeve, an austenitic stainless steel inner sleeve and an antistatic agent PVC or PE hard outer casing to solve the existing problems in the coal seam spontaneous combustion indicator gas sampling pipeline in the existing coal mine production process: at present, the goaf buried pipe sampling pipeline is mostly used seamless steel pipe and plastic high-pressure pipe, In the process of use, seamless steel pipes are easy to corrode, have the disadvantages of easy to generate sparks when dragged (coal mine production requires strict control of all fire sources or sparks), and are easily crushed by falling rocks. During the use of plastic high-pressure pipes, PE pipes are prone to produce ethylene, and PVC pipes are prone to produce aromatic hydrocarbons, and ethylene and aromatic hydrocarbons are sensitive indicator gases for judging the progress of coal spontaneous combustion in goafs. If antistatic agents are not added to PE pipes and PVC pipes, static electricity is likely to be generated. The characteristics of coal mine production require the use of flame-retardant and antistatic pipes, cables, and air ducts in underground mines.
本发明的技术方案是：一种复合型采空区煤自燃检测气体取样管道，包括奥氏不绣钢内套管和硬质外套管，硬质外套管外套于奥氏不绣钢内套管外表面。The technical solution of the present invention is: a composite goaf coal spontaneous combustion detection gas sampling pipeline, including an austenitic stainless steel inner casing and a hard outer casing, and the hard outer casing is placed on the austenitic stainless steel inner casing The outer surface.
所述的硬质外套管的材质为加抗静电剂的PVC或PE。The material of the hard outer sleeve is PVC or PE with antistatic agent added.
所述的一种复合型采空区煤自燃检测气体取样管道的制备方法，内套管采用奥氏不锈钢成型而成，外套管采用加入抗静电剂的PE或者PVC硬管材质的材料融化包裹在内套管奥氏不锈钢的外表面成型而成。In the preparation method of a composite goaf coal spontaneous combustion detection gas sampling pipeline, the inner sleeve is formed by austenitic stainless steel, and the outer sleeve is melted and wrapped in PE or PVC hard pipe material added with an antistatic agent. The outer surface of the inner sleeve is formed from austenitic stainless steel.
本发明的有益效果：与现有技术相比，采用两种不同材质的管道组合成一个管道整体，发挥了两种材质的优点，避免了两种材质的缺点，生产简单，容易成型，煤矿企业需求量大，生产量大，生产成本不高，采用本发明专利可使煤矿井下采空区埋管后取出的检测煤自燃的指标性气体真实可靠，以便于准确根据取样气体检测出的指标性气体判断出的采空区煤自燃发火危险程度的真实性和可靠性，以便采取准确的治理煤自燃发火的管理措施，既保证煤矿的安全生产，也不产生不必要的人力物力的浪费和对生产进度的影响，确保煤矿生产的正常顺利进行和经济效益的提高，使生产效益最大化。Beneficial effects of the present invention: compared with the prior art, two pipes of different materials are used to form a whole pipe, which takes advantage of the advantages of the two materials, avoids the disadvantages of the two materials, and is simple in production and easy to form. The demand is large, the production volume is large, and the production cost is not high. The patent of the present invention can make the index gas for detecting spontaneous combustion of coal taken out after the coal mine goaf buried is true and reliable, so as to accurately detect the index gas according to the sampling gas. The authenticity and reliability of the danger degree of coal spontaneous combustion in the goaf judged by gas, in order to take accurate management measures to control coal spontaneous combustion, not only to ensure the safe production of coal mines, but also to avoid unnecessary waste of manpower and material resources and damage The influence of the production schedule ensures the normal and smooth progress of coal mine production and the improvement of economic benefits, so as to maximize the production benefits.
奥氏不锈钢内套管在使用过程中不产生乙烯、或者芳香类气体，这就不影响作为煤自燃检测的指标性气体：一氧化碳、乙烯、乙炔、芳香气体等，奥氏不锈钢耐腐蚀、阻然、导电性能良好（抗静电）、韧性和塑性好、容易成型、但强度较低，硬度差不抗压；加入抗静电剂的PE或者PVC硬管材质的外套管：阻燃、抗静电、融化成型温度不太高，有较好的抗拉、抗弯、抗压和抗冲击能力，抗压强度高，搬运、拖动的过程不产生火花、但在使用过程中，容易产生乙烯或者芳香类气体，从而引起取样检测指标性气体浓度含量失真。The austenitic stainless steel inner casing does not produce ethylene or aromatic gases during use, which does not affect the indicator gases used as coal spontaneous combustion detection: carbon monoxide, ethylene, acetylene, aromatic gases, etc. Austenitic stainless steel is corrosion-resistant and flame-resistant , Good electrical conductivity (antistatic), good toughness and plasticity, easy to form, but low strength, poor hardness and no compression resistance; PE or PVC hard tube material with antistatic agent: flame retardant, antistatic, melting The molding temperature is not too high, it has good tensile, bending, compressive and impact resistance, high compressive strength, no sparks are generated during handling and dragging, but it is easy to produce ethylene or aromatic substances during use. Gas, thus causing the distortion of the index gas concentration content for sampling detection.
采用奥氏不锈钢作为内套管，在使用过程中不产生乙烯、或者芳香类气体，这就不影响作为煤自燃检测的指标性气体：一氧化碳、乙烯、乙炔、芳香气体等，使得根据取样气体检测出的乙烯、或芳香气体浓度不失真，能够准确判断采空区煤的自燃发火情况的真实程度，以利于煤矿管理部门采取准确的措施，在保证煤矿生产安全的情况下，不采取因采集的检测气体失真判断失误而采取的不必要措施，从而避免了不必要的人力、物力的浪费和对生产进度的影响。Using austenitic stainless steel as the inner casing, no ethylene or aromatic gases will be generated during use, which will not affect the indicator gases used as coal spontaneous combustion detection: carbon monoxide, ethylene, acetylene, aromatic gases, etc. The concentration of ethylene or aromatic gas produced is not distorted, and it can accurately judge the true degree of spontaneous combustion of coal in the gob area, so as to facilitate the coal mine management department to take accurate measures. Unnecessary measures taken to detect gas distortion and misjudgment, thereby avoiding unnecessary waste of manpower and material resources and impact on production progress.
附图说明Description of drawings
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
具体实施方式detailed description
如图1所示，一种复合型采空区煤自燃检测气体取样管道，包括奥氏不绣钢内套管1和硬质外套管2，硬质外套管2外套于奥氏不绣钢内套管1外表面。所述的硬质外套管2的材质为加抗静电剂的PVC或PE。内套管1采用奥氏不锈钢成型而成，外套管2采用加入抗静电剂的PE或者PVC硬管材质的材料融化包裹在内套管奥氏不锈钢的外表面成型而成。这样，采用奥氏不锈钢内套管1和采用加入抗静电剂的PE或者PVC材质外套管2就成了一个整体。奥氏不锈钢内套管1在使用过程中不产生乙烯、或者芳香类气体，这就不影响作为煤自燃检测的指标性气体：一氧化碳、乙烯、乙炔、芳香气体等，使得根据取样气体检测出的乙烯、或芳香气体浓度不失真，能够准确判断采空区煤的自燃发火情况的真实程度，以利于煤矿管理部门采取准确的措施，在保证煤矿生产安全的情况下，不采取因采集的检测气体失真判断失误而采取的不必要措施，从而避免了不必要的人力、物力的浪费和对生产进度的影响。奥氏不锈钢耐腐蚀、阻然、导电性能良好（抗静电）、韧性和塑性好、容易成型、但强度较低，硬度差不抗压；采用加入抗静电剂的PE或者PVC硬管材质的包裹在内套管上作为外套管2：阻燃、抗静电、融化成型温度不太高，有较好的抗拉、抗弯、抗压和抗冲击能力，抗压强度高，可以避免搬运、拖动的过程产生火花，避免了瓦斯爆炸的条件因素之一：高温热源—明火的产生，以便更好的确保煤矿安全生产；同时作为管道的外套管，也避免了产生乙烯或者芳香类气体对被取样气体的影响。As shown in Figure 1, a composite goaf coal spontaneous combustion detection gas sampling pipeline includes an austenitic stainless steel inner casing 1 and a hard outer casing 2, and the hard outer casing 2 is overlaid in the austenitic stainless steel The outer surface of casing 1. The material of the hard outer sleeve 2 is PVC or PE with antistatic agent added. The inner casing 1 is formed by austenitic stainless steel, and the outer casing 2 is formed by melting and wrapping the outer surface of the austenitic stainless steel of the inner casing by adding antistatic agent PE or PVC hard pipe material. In this way, the austenitic stainless steel inner casing 1 and the PE or PVC material outer casing 2 added with an antistatic agent have become a whole. The austenitic stainless steel inner casing 1 does not produce ethylene or aromatic gases during use, which does not affect the indicator gases used as coal spontaneous combustion detection: carbon monoxide, ethylene, acetylene, aromatic gases, etc., so that the gas detected according to the sampling gas The concentration of ethylene or aromatic gas is not distorted, and it can accurately judge the true degree of coal spontaneous combustion in the gob area, so as to facilitate the coal mine management department to take accurate measures. Unnecessary measures taken due to misjudgment of distortion, thereby avoiding unnecessary waste of manpower and material resources and impact on production progress. Austenitic stainless steel has corrosion resistance, natural resistance, good electrical conductivity (antistatic), good toughness and plasticity, easy to form, but low strength, poor hardness and no compression resistance; it is wrapped with PE or PVC hard pipe material with antistatic agent As the outer sleeve 2 on the inner sleeve: flame retardant, antistatic, melting and molding temperature is not too high, good tensile, bending, compressive and impact resistance, high compressive strength, can avoid handling, dragging Sparks are generated during the moving process, which avoids one of the conditions for gas explosions: the generation of high-temperature heat sources—open flames, so as to better ensure the safety of coal mine production; at the same time, as the outer sleeve of the pipeline, it also avoids the production of ethylene or aromatic gases. Influence of sample gas.
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Citations (4)
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| US4321967A (en) * | 1979-07-21 | 1982-03-30 | Maschinenfabrik Korfmann Gmbh | Suction of gases from boreholes in coal mining |
| CN2417352Y (en) * | 2000-05-17 | 2001-01-31 | 冯德 | Compound tube |
| CN2454609Y (en) * | 2000-04-26 | 2001-10-17 | 侯贤忠 | Composite tube with plastic and thin-wall stainless steel lining |
| CN201359143Y (en) * | 2008-12-25 | 2009-12-09 | 河南康泰塑业科技有限公司 | PVC compound mine pipe |
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2017
- 2017-11-10 CN CN201711101408.8A patent/CN107642645A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321967A (en) * | 1979-07-21 | 1982-03-30 | Maschinenfabrik Korfmann Gmbh | Suction of gases from boreholes in coal mining |
| CN2454609Y (en) * | 2000-04-26 | 2001-10-17 | 侯贤忠 | Composite tube with plastic and thin-wall stainless steel lining |
| CN2417352Y (en) * | 2000-05-17 | 2001-01-31 | 冯德 | Compound tube |
| CN201359143Y (en) * | 2008-12-25 | 2009-12-09 | 河南康泰塑业科技有限公司 | PVC compound mine pipe |
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Application publication date: 20180130 |