CN108458188A - A kind of impermeable nonmetal flexible composite soft tube fast connecting joint - Google Patents
A kind of impermeable nonmetal flexible composite soft tube fast connecting joint Download PDFInfo
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- CN108458188A CN108458188A CN201810203594.4A CN201810203594A CN108458188A CN 108458188 A CN108458188 A CN 108458188A CN 201810203594 A CN201810203594 A CN 201810203594A CN 108458188 A CN108458188 A CN 108458188A
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- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 229910052755 nonmetal Inorganic materials 0.000 title claims description 5
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 4
- 239000010962 carbon steel Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 210000002445 nipple Anatomy 0.000 claims 3
- 230000001681 protective effect Effects 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 11
- 230000035515 penetration Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
- F16L33/18—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses characterised by the use of additional sealing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
一种防渗透的非金属复合软管快速连接接头，装置主要包括：特殊公接头、紧扣台肩、母锥螺纹、公锥螺纹、密封锥面、特殊母接头、密封球面、六角螺栓，其中，特殊公接头及母接头的材料为耐蚀合金，带母锥螺纹的六角螺栓由普通碳钢材料制成；特殊公接头由紧扣台肩、密封球面和保护台肩组成，特殊母接头由公锥螺纹、密封锥面和保护台肩组成，特殊公接头和特殊母接头两端与非金属柔性复合软管连接；母锥螺纹和公锥螺纹起连接作用，而不起密封作用；紧密接触的密封锥面与密封球面只起主密封作用，而不起连接作用，保护台肩起保护密封锥面和密封球面及次密封作用，采用普通扳手即可完成复合软管的快速连接。本发明适合于油气开采和传输工程技术领域。An anti-penetration non-metallic composite hose quick connection joint, the device mainly includes: special male joint, fastening shoulder, female taper thread, male taper thread, sealing cone surface, special female joint, sealing spherical surface, hexagonal bolt, among which , the material of the special male joint and the female joint is corrosion-resistant alloy, and the hexagonal bolt with the female taper thread is made of ordinary carbon steel; the special male joint is composed of a fastening shoulder, a sealing spherical surface and a protective shoulder, and the special female joint is composed of Composed of male tapered thread, sealing tapered surface and protective shoulder, both ends of special male joint and special female joint are connected with non-metallic flexible composite hose; female tapered thread and male tapered thread play the role of connection, not sealing; close contact The sealing cone surface and sealing spherical surface only play the role of main sealing, but not the connection function. The protective shoulder plays the role of protecting the sealing cone surface, sealing spherical surface and secondary sealing. The quick connection of the composite hose can be completed by using an ordinary wrench. The invention is suitable for the technical fields of oil and gas exploitation and transmission engineering.
Description
技术领域technical field
本专利涉及石油与天然气开采和传输工程技术领域，具体是一种防渗透的非金属柔性复合软管快速连接接头。This patent relates to the technical field of oil and gas exploration and transmission engineering, in particular to a non-metallic flexible composite hose quick-connect joint that prevents penetration.
背景技术Background technique
伴随着社会的不断发展以及我国能源供需矛盾的日益突出，油气资源的需求量也在不断提升，这也间接的推动着油气开采和传输技术的发展和创新。与传统耐腐蚀性差、生产成本高的金属管线相比，非金属柔性复合软管是一种由高分子复合材料制成的具有较高的强度、高压力、耐腐蚀、耐结垢、摩阻系数小、保温性好、柔韧性好、寿命长等优异性能的石油天然气工业输送用管件。截止目前，非金属柔性复合软管已在新疆（塔克拉玛干沙漠）、长庆、大庆、吉林、大港、华北等油气田进行了大面积推广应用，主要是在单井油气集输、酸化、压裂、污水回灌、单井注水/注醇等方面，应用效果良好。With the continuous development of society and the increasingly prominent contradiction between energy supply and demand in my country, the demand for oil and gas resources is also increasing, which also indirectly promotes the development and innovation of oil and gas extraction and transmission technologies. Compared with traditional metal pipelines with poor corrosion resistance and high production costs, non-metallic flexible composite hoses are made of polymer composite materials with high strength, high pressure, corrosion resistance, scaling resistance, friction resistance Pipe fittings for oil and gas industry transportation with small coefficient, good heat preservation, good flexibility, and long service life. So far, non-metallic flexible composite hoses have been widely used in Xinjiang (Taklimakan Desert), Changqing, Daqing, Jilin, Dagang, North China and other oil and gas fields, mainly in single well oil and gas gathering, acidizing, fracturing, It has good application effect in sewage recharge, single well water/alcohol injection, etc.
非金属柔性复合软管的结构由内到外主要是由管芯、增强层、外包层构成，其中芯管主要是以硅烷交联高密度聚乙烯管以及纳米改善之后的聚录乙烯管为主。强化层主要是以管芯上编织和缠绕的增强纤维丝以及钢丝绳为主，其增强纤维层之间采用年结合剂进行粘连。外包层主要是以聚乙烯防腐材料为主，具备较高的防腐蚀性功能。The structure of the non-metallic flexible composite hose is mainly composed of a tube core, a reinforcing layer, and an outer cladding from the inside to the outside. The core tube is mainly made of silane cross-linked high-density polyethylene tube and nano-improved polyethylene tube. . The reinforcement layer is mainly composed of reinforced fiber filaments and steel wire ropes braided and wound on the tube core, and the reinforced fiber layers are bonded with an annual binder. The outer cladding is mainly made of polyethylene anti-corrosion material, which has a high anti-corrosion function.
用于石油工业的非金属柔性复合软管工作压力一般10MPa左右，内径100-200mm，壁厚一般为10mm左右，管道埋深一般为1m左右。此外，在软管的生产过程中，受设备承重能力和空间大小的限制，一根软管不可能是完全连续的，每500～1000ｍ 就会存在一个刚性连接件，即刚性连接接头。非金属柔性复合管道的连接方式主要是以丝扣式、扣压式、法兰式、由壬式为主，按照实际的压力等级不同采用针对性的连接方式，一般情况下是以丝扣式的连接方式为主。The non-metallic flexible composite hose used in the petroleum industry generally has a working pressure of about 10MPa, an inner diameter of 100-200mm, a wall thickness of about 10mm, and a buried depth of about 1m. In addition, in the production process of the hose, due to the limitation of the load-bearing capacity of the equipment and the size of the space, a hose cannot be completely continuous, and there will be a rigid connection every 500-1000m, that is, a rigid connection joint. The connection methods of non-metallic flexible composite pipes are mainly screw-type, buckle-type, flange-type, and union-type. According to the actual pressure level, targeted connection methods are adopted. Generally, screw-type is used. The connection method is the main method.
然而，用于油气工业输送的非金属关系一般长达数十千米，甚至高达100千米，需要将数十根非金属柔性复合软管进行连接，而现有接头在连接过程中需要笨重的工具不仅效率低，而且在柔性软管管道实际运行过程中，其接头部位容易发生渗透的情况。此外，在沙漠地区每年3月份到10月份是沙漠季节，风量比较大，沙丘会大量迁移，平均速度可达6m/年，沙堆的迁移导致管道悬空在沙土之上，致使非金属柔性复合管本体和接头受拉并发生破坏。对此，需要对柔性管道进行迁移和维修，将管道的铺设位置尽量控制在远离风口的位置上，在迁移和维修过程中需要频繁对接头进行拆卸、安装及更换，如果使用现有的连接接头，不仅迁移和维修效率低，显著降低油田经济效率，而且容易导致接头受损，对后期的运行构成了安全隐患。However, the non-metallic connections used in the oil and gas industry are generally tens of kilometers long, even up to 100 kilometers long, and dozens of non-metallic flexible composite hoses need to be connected. Not only are the tools inefficient, but the joints are prone to penetration during the actual operation of the flexible hose pipeline. In addition, in the desert area, the desert season is from March to October every year. The wind volume is relatively large, and the sand dunes will migrate in large quantities, with an average speed of up to 6m/year. The body and joints are under tension and fail. In this regard, it is necessary to relocate and repair the flexible pipeline, and control the laying position of the pipeline as far away from the tuyere as possible. During the migration and maintenance process, the joints need to be frequently disassembled, installed and replaced. If the existing connection joints are used , not only the migration and maintenance efficiency is low, which significantly reduces the economic efficiency of the oilfield, but also easily leads to damage to the joints, which poses a safety hazard to the later operation.
为此，本发明提出一种防渗透的非金属柔性复合软管连接接头，该装置采用的扳手式拆卸和安装方法可显著提高非金属柔性复合软管的施工效率，采用的金属-金属的球面对锥面的密封结构和台肩密封结构可有效的防止CO2、CH4、H2S等各类气体的渗透，采用的无螺纹耐蚀合金密封结构不仅可用于各类腐蚀介质，而且可有效的防止因螺纹而产生的密封问题，从而保障非金属软管在苛刻的运行环境下始终处于安全状态。For this reason, the present invention proposes an anti-penetration non-metallic flexible composite hose connection joint. The wrench disassembly and installation method adopted by the device can significantly improve the construction efficiency of the non-metallic flexible composite hose. The metal-metal ball used The sealing structure facing the cone surface and the shoulder sealing structure can effectively prevent the penetration of various gases such as CO 2 , CH 4 , H 2 S, etc. The non-threaded corrosion-resistant alloy sealing structure can not only be used for various corrosive media, but also It can effectively prevent the sealing problem caused by the thread, so as to ensure that the non-metallic hose is always in a safe state under the harsh operating environment.
发明内容Contents of the invention
本发明的目的是提供一种防渗透的非金属柔性复合软管快速连接接头，以解决沙漠油气水等腐蚀介质输送过程中非金属柔性复合软管安全快速连接的技术难题，该装置不仅结构简单、操作方便，而且极易满足复合软管面临的实际服役工况。The purpose of the present invention is to provide an anti-penetration non-metal flexible composite hose quick connection joint to solve the technical problem of safe and fast connection of non-metal flexible composite hose in the process of transporting corrosive media such as desert oil, gas and water. The device is not only simple in structure , Easy to operate, and very easy to meet the actual service conditions faced by composite hoses.
为实现上述目的，本发明采取以下技术方案：To achieve the above object, the present invention takes the following technical solutions:
本发明提出了一种防渗透的非金属复合软管快速连接接头，主要包括：特殊公接头、紧扣台肩、母锥螺纹、公锥螺纹、密封锥面、特殊母接头、保护台肩、密封球面、六角螺栓，其中，特殊公接头和特殊母接头的材料为耐蚀合金，带母锥螺纹的六角螺栓由普通碳钢材料制成；特殊公接头由紧扣台肩、密封球面和保护台肩组成，特殊母接头由公锥螺纹、密封锥面和保护台肩组成，特殊公接头和特殊母接头两端与非金属柔性复合软管连接；母锥螺纹和公锥螺纹起连接作用，而不起密封作用；紧密接触的密封锥面与密封球面只起主密封作用，而不起连接作用，保护台肩起保护密封锥面和密封球面及次密封作用；采用普通扳手旋紧六角螺栓即可完成非金属复合软管之间的快速连接，在连接过程中，六角螺栓通过推动紧扣台肩可建立特殊公接头上密封球面与特殊母接头上密封锥面之间的紧密接触，从而实现无螺纹接头的密封和快速连接，完全避免了因螺纹失效而产生的密封问题。The invention proposes a non-metallic composite hose quick-connect joint that prevents penetration, mainly including: a special male joint, a fastening shoulder, a female taper thread, a male taper thread, a sealing taper surface, a special female joint, a protective shoulder, Sealed spherical and hexagonal bolts, among which, the material of special male joints and special female joints is corrosion-resistant alloy, and the hexagonal bolts with female taper threads are made of ordinary carbon steel materials; special male joints are made of tight shoulders, sealing spherical surfaces and protection The special female joint is composed of a male tapered thread, a sealing tapered surface and a protective shoulder. The two ends of the special male joint and the special female joint are connected with a non-metallic flexible composite hose; the female tapered thread and the male tapered thread play the role of connection. But it does not play a sealing role; the sealing cone surface and the sealing spherical surface in close contact only play the role of main sealing, but not the connecting role, and the protection shoulder plays the role of protecting the sealing cone surface, sealing spherical surface and secondary sealing; use ordinary wrench to tighten the hexagonal bolts The quick connection between non-metallic composite hoses can be completed. During the connection process, the hexagonal bolt can establish a tight contact between the sealing spherical surface on the special male joint and the sealing cone surface on the special female joint by pushing the fastening shoulder, so that Realize the sealing and quick connection of the threadless joint, and completely avoid the sealing problem caused by the failure of the thread.
本发明具有以下的优点：The present invention has the following advantages:
仅采用普通扳手，利用本发明即可实现非金属柔性复合软管的快速连接，采用无螺纹耐蚀合金球面-锥面的密封结构不仅可用于各类腐蚀介质，而且可有效的防止因螺纹失效而产生的密封问题，有效地解决了接头部位容易发生气体渗透的技术难题，尤其为沙漠中用于运输油气水等腐蚀介质的非金属柔性复合软管快速安装、迁移及维修带来了极大方便。Only ordinary wrenches are used, and the invention can realize quick connection of non-metallic flexible composite hoses. The sealing structure of non-threaded corrosion-resistant alloy spherical surface-cone surface can not only be used for various corrosive media, but also can effectively prevent thread failure. The resulting sealing problem effectively solves the technical problem that the joints are prone to gas permeation, especially for the rapid installation, migration and maintenance of non-metallic flexible composite hoses used to transport corrosive media such as oil, gas and water in the desert. convenient.
附图说明Description of drawings
图1是本发明装置结构之示意图。Fig. 1 is a schematic diagram of the device structure of the present invention.
具体实施方式Detailed ways
下面结合附图及实施例，对本发明进行详细的描述。The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
参见附图，本发明提出了一种防渗透的非金属复合软管快速连接接头，主要包括：特殊公接头1、紧扣台肩2、母锥螺纹3、公锥螺纹4、密封锥面5、特殊母接头6、保护台肩7、密封球面8、六角螺栓9，其中，特殊公接头1和特殊母接头6的材料为耐蚀合金，带母锥螺纹3的六角螺栓9由普通碳钢材料制成；特殊公接头1由紧扣台肩2、密封球面8和保护台肩7组成，特殊母接头6由公锥螺纹4、密封锥面5和保护台肩7组成，特殊公接头1和特殊母接头6两端与非金属柔性复合软管连接；母锥螺纹3和公锥螺纹4只起连接作用，而不起密封作用；紧密接触的密封锥面5与密封球面8起主密封作用，而不起连接作用，保护台肩7起保护密封锥面5和密封球面8及次密封作用；采用普通扳手旋紧六角螺栓9即可完成非金属复合软管之间的快速连接，在连接过程中，六角螺栓9通过推动紧扣台肩2可建立特殊公接头1上密封球面8与特殊母接头6上密封锥面5之间的紧密接触，从而实现无螺纹接头的有效密封和快速连接，完全避免了因螺纹失效而产生的密封问题。Referring to the accompanying drawings, the present invention proposes a non-metallic composite hose quick-connect joint that prevents penetration, mainly including: special male joint 1, fastening shoulder 2, female taper thread 3, male taper thread 4, sealing taper surface 5 , special female joint 6, protective shoulder 7, sealing spherical surface 8, hexagonal bolt 9, wherein the material of special male joint 1 and special female joint 6 is corrosion-resistant alloy, and the hexagonal bolt 9 with female taper thread 3 is made of ordinary carbon steel material; special male joint 1 is composed of fastening shoulder 2, sealing spherical surface 8 and protective shoulder 7; special female joint 6 is composed of male tapered thread 4, sealing tapered surface 5 and protective shoulder 7; special male joint 1 The two ends of the special female joint 6 are connected to the non-metallic flexible composite hose; the female taper thread 3 and the male taper thread 4 are only used for connection, but not for sealing; the closely contacting sealing cone surface 5 and sealing spherical surface 8 are the main seal The protective shoulder 7 plays the role of protecting the sealing cone surface 5 and the sealing spherical surface 8 and the secondary sealing; the quick connection between the non-metallic composite hoses can be completed by tightening the hexagonal bolts 9 with an ordinary wrench. During the connection process, the hexagonal bolt 9 can establish a tight contact between the sealing spherical surface 8 on the special male joint 1 and the sealing cone surface 5 on the special female joint 6 by pushing the shoulder 2 tightly, so as to realize effective sealing and fast sealing of the threadless joint. The connection completely avoids the sealing problem caused by thread failure.
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| CN201810203594.4A CN108458188A (en) | 2018-03-13 | 2018-03-13 | A kind of impermeable nonmetal flexible composite soft tube fast connecting joint |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734906A (en) * | 2020-07-28 | 2020-10-02 | 大连盐化集团有限公司 | Salt Slurry Pipe Snap-in Quick Connector |
| CN112555527A (en) * | 2020-12-23 | 2021-03-26 | 中国石油天然气集团有限公司 | Non-metal flexible composite pipe buckling and pressing joint for oil and gas transmission and connecting method thereof |
| CN113914842A (en) * | 2021-11-01 | 2022-01-11 | 泰伦机械(苏州)有限公司 | Combined fracturing manifold device |
| CN115303684A (en) * | 2022-07-06 | 2022-11-08 | 西南石油大学 | Automatic book taking and placing device and method adopting rigid-flexible combined design |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734906A (en) * | 2020-07-28 | 2020-10-02 | 大连盐化集团有限公司 | Salt Slurry Pipe Snap-in Quick Connector |
| CN112555527A (en) * | 2020-12-23 | 2021-03-26 | 中国石油天然气集团有限公司 | Non-metal flexible composite pipe buckling and pressing joint for oil and gas transmission and connecting method thereof |
| CN113914842A (en) * | 2021-11-01 | 2022-01-11 | 泰伦机械(苏州)有限公司 | Combined fracturing manifold device |
| CN115303684A (en) * | 2022-07-06 | 2022-11-08 | 西南石油大学 | Automatic book taking and placing device and method adopting rigid-flexible combined design |
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