CN205824427U - Bimetallic insulating joint - Google Patents
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- CN205824427U CN205824427U CN201620712648.6U CN201620712648U CN205824427U CN 205824427 U CN205824427 U CN 205824427U CN 201620712648 U CN201620712648 U CN 201620712648U CN 205824427 U CN205824427 U CN 205824427U
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Abstract
本实用新型公开了双金属绝缘接头；包括左法兰组件、右法兰组件、将左法兰组件和右法兰组件连接在一起的固定套以及左法兰、右法兰与固定套之间设有的绝缘部件；左法兰组件包括左短管和左法兰；右法兰组件包括右短管和右法兰；所述固定套与左法兰进行焊接连接；所述绝缘部件包括大直套、小直套、支撑板以及绝缘垫片，所述绝缘垫片设置在左法兰与右法兰的连接处，所述大直套和小直套设置在固定套与右法兰基层之间，所述支撑板设置在大直套与小直套之间。本实用新型结构简单、生产成本低、耐腐蚀性能强。
The utility model discloses a bimetal insulating joint, which comprises a left flange assembly, a right flange assembly, a fixing sleeve connecting the left flange assembly and the right flange assembly together, and the gap between the left flange, the right flange and the fixing sleeve. The insulating part provided; the left flange assembly includes the left short pipe and the left flange; the right flange assembly includes the right short pipe and the right flange; the fixing sleeve is welded to the left flange; the insulating part includes a large Straight sleeves, small straight sleeves, support plates and insulating gaskets, the insulating gaskets are arranged at the junction of the left flange and the right flange, and the large straight sleeves and small straight sleeves are arranged at the base of the fixed sleeve and the right flange Between, the support plate is arranged between the large straight sleeve and the small straight sleeve. The utility model has the advantages of simple structure, low production cost and strong corrosion resistance.
Description
技术领域technical field
本实用新型涉及一种埋地式长输管道用接头，特别涉及双金属绝缘接头。The utility model relates to a joint for buried long-distance pipelines, in particular to a bimetal insulating joint.
背景技术Background technique
目前公知的绝缘接头，法兰、固定套和短管一般由碳钢材料制作；法兰、固定套用锻造毛坯加工，短管用管料加工。这类材料的绝缘接头，能够满足弱腐蚀性油气介质的输送需要。Currently known insulating joints, flanges, fixed sleeves and short pipes are generally made of carbon steel materials; flanges, fixed sleeves are processed with forging blanks, and short pipes are processed with pipe materials. Insulated joints of this type of material can meet the needs of transporting weakly corrosive oil and gas media.
社会对能源的需求量越来越大，而易于开采的油气资源越来越少，油气田的勘探开发不得不向更深的地层钻进，向环境条件更为苛刻的地区发展。随着超深、高温、高压、高含CO2、H2S、Cl-及元素硫等油气田的相继出现，对绝缘接头材料的耐腐蚀性能提出了极高的要求。为了满足耐腐蚀性能，输送油气的管线材料改用耐蚀合金或双金属复合管。管线材料为耐蚀合金时，与之配套的绝缘接头，法兰、固定套和短管采用与管线同材质的耐蚀合金制作；管线材料为双金属复合管时，法兰、固定套采用与管线内衬层同材质的耐蚀合金制作，短管采用与管线同材质的双金属复合管，或采用与管线内衬层同材质的耐蚀合金制作。从碳钢绝缘接头，发展到耐蚀合金绝缘接头，规格较小时，增加的成本不算太高；规格较大时，增加的成本非常高。The society's demand for energy is increasing, but the oil and gas resources that are easy to exploit are becoming less and less. The exploration and development of oil and gas fields have to drill deeper into the strata and develop in areas with harsher environmental conditions. With the emergence of ultra-deep, high temperature, high pressure, high CO 2 , H 2 S , Cl - and elemental sulfur oil and gas fields, the corrosion resistance of insulating joint materials is extremely high. In order to meet the corrosion resistance performance, the pipeline material for transporting oil and gas is changed to corrosion-resistant alloy or bimetal composite pipe. When the pipeline material is a corrosion-resistant alloy, the matching insulating joints, flanges, fixed sleeves and short pipes are made of the same material as the pipeline; when the pipeline material is a bimetal composite pipe, the flange and fixed sleeve are made of the same The pipeline lining is made of the same material as the corrosion-resistant alloy, and the short pipe is made of the same material as the pipeline bimetallic composite pipe, or made of the same material as the pipeline lining. From carbon steel insulated joints to corrosion-resistant alloy insulated joints, when the specifications are small, the increased cost is not too high; when the specifications are large, the increased cost is very high.
实用新型内容Utility model content
本实用新型要解决的技术问题是提供一种结构简单、生产成本低、耐腐蚀性能强的双金属绝缘接头。The technical problem to be solved by the utility model is to provide a bimetal insulating joint with simple structure, low production cost and strong corrosion resistance.
为达到上述目的，本实用新型的技术方案如下：In order to achieve the above object, the technical scheme of the utility model is as follows:
双金属绝缘接头；所述绝缘接头包括：Bimetallic insulated joints; said insulated joints include:
左法兰组件，所述左法兰组件包括左短管和左法兰，所述左短管与左法兰焊接在一起，所述左短管包括左短管基层和位于左短管基层内表面上的耐蚀复层，所述左法兰包括左法兰基层、位于左法兰基层内表面上的流道耐蚀堆焊层以及位于左法兰基层端部的端面耐蚀堆焊层；The left flange assembly, the left flange assembly includes a left short pipe and a left flange, the left short pipe and the left flange are welded together, the left short pipe includes a left short pipe base and is located in the left short pipe base The corrosion-resistant cladding layer on the surface, the left flange includes the left flange base layer, the flow channel corrosion-resistant overlay layer on the inner surface of the left flange base layer, and the end surface corrosion-resistant overlay layer located at the end of the left flange base layer ;
右法兰组件，所述右法兰组件包括右短管和右法兰，所述右短管与右法兰焊接在一起，所述右短管包括右短管基层和位于右短管基层内表面上的耐蚀复层，所述右法兰包括右法兰基层、位于右法兰基层内表面上的流道耐蚀堆焊层以及位于右法兰基层端部的端面耐蚀堆焊层；The right flange assembly, the right flange assembly includes a right short pipe and a right flange, the right short pipe is welded together with the right flange, the right short pipe includes a right short pipe base layer and is located in the right short pipe base layer The corrosion-resistant cladding layer on the surface, the right flange includes the right flange base, the flow channel corrosion-resistant surfacing layer located on the inner surface of the right flange base, and the end surface corrosion-resistant surfacing layer located at the end of the right flange base ;
将左法兰组件和右法兰组件连接在一起的固定套，所述固定套与左法兰进行焊接连接；A fixing sleeve connecting the left flange assembly and the right flange assembly together, the fixing sleeve is welded to the left flange;
所述左法兰、右法兰与固定套之间设有绝缘部件，所述绝缘部件包括大直套、小直套、支撑板、绝缘垫片以及密封环，所述绝缘垫片、密封环设置在左法兰与右法兰的连接处，所述大直套和小直套设置在固定套与右法兰基层之间，所述支撑板设置在大直套与小直套之间。An insulating part is arranged between the left flange, the right flange and the fixed sleeve, and the insulating part includes a large straight sleeve, a small straight sleeve, a support plate, an insulating gasket and a sealing ring, and the insulating gasket, sealing ring It is arranged at the junction of the left flange and the right flange, the large straight sleeve and the small straight sleeve are arranged between the fixed sleeve and the base layer of the right flange, and the support plate is arranged between the large straight sleeve and the small straight sleeve.
在本实用新型的一个实施例中，左短管与左法兰、右短管与右法兰之间形成的焊接结构由打底层、过渡层、填充层以及盖面层组成。In one embodiment of the present invention, the welding structure formed between the left short pipe and the left flange, and between the right short pipe and the right flange is composed of a primer layer, a transition layer, a filling layer and a cover layer.
在本实用新型的一个实施例中，所述耐蚀复层的厚度等于流道、端面耐蚀堆焊层的厚度。In one embodiment of the present invention, the thickness of the corrosion-resistant cladding layer is equal to the thickness of the flow channel and the end surface corrosion-resistant surfacing layer.
在本实用新型的一个实施例中，所述固定套与小直套之间的间隙内填充环氧树脂。In one embodiment of the present invention, the gap between the fixed sleeve and the small straight sleeve is filled with epoxy resin.
在本实用新型的一个实施例中，打底层的厚度大于耐蚀复层以及流道、端面耐蚀堆焊层的厚度。In one embodiment of the present utility model, the thickness of the primer layer is greater than the thickness of the corrosion-resistant cladding layer, the flow channel, and the corrosion-resistant surfacing layer on the end face.
在本实用新型的一个实施例中，所述耐蚀复层以及流道、端面耐蚀堆焊层的厚度大于3mm。In one embodiment of the present invention, the thickness of the corrosion-resistant cladding layer, the flow channel, and the corrosion-resistant surfacing layer on the end surface is greater than 3 mm.
通过上述技术方案，本实用新型的有益效果是：Through above-mentioned technical scheme, the beneficial effect of the utility model is:
本实用新型结构简单、生产成本低、强度高、耐腐蚀性能强。The utility model has the advantages of simple structure, low production cost, high strength and strong corrosion resistance.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本实用新型结构示意图；Fig. 1 is the structural representation of the utility model;
图2为图1中A的放大图；Figure 2 is an enlarged view of A in Figure 1;
图中数字和字母所表示的相应部件名称：The corresponding part names indicated by numbers and letters in the figure:
10、左短管 11、左短管基层 20、左法兰 21、左法兰基层 30、耐蚀复层 40、流道耐蚀堆焊层 50、端面耐蚀堆焊层 60、右短管 61、右短管基层 70、右法兰 71、右法兰基层80、固定套 90、大直套 100、小直套 110、支撑板 120、绝缘垫片 130、密封环 140、打底层150、过渡层 160、填充层 170、盖面层。10. Left short pipe 11, left short pipe base layer 20, left flange 21, left flange base layer 30, corrosion-resistant cladding layer 40, flow channel corrosion-resistant surfacing layer 50, end surface corrosion-resistant surfacing layer 60, right short pipe 61. Right short pipe base layer 70, right flange 71, right flange base layer 80, fixed sleeve 90, large straight sleeve 100, small straight sleeve 110, support plate 120, insulating gasket 130, sealing ring 140, bottom layer 150, The transition layer 160, the filling layer 170, and the cover layer.
具体实施方式detailed description
为了使本实用新型实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本实用新型。In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.
参见图1和图2所示，本实用新型公开了双金属绝缘接头，绝缘接头包括左法兰组件、右法兰组件、将左法兰组件和右法兰组件连接在一起的固定套以及左法兰、右法兰与固定套之间设置的绝缘部件。Referring to Fig. 1 and Fig. 2, the utility model discloses a bimetal insulated joint. The insulated joint includes a left flange assembly, a right flange assembly, a fixing sleeve connecting the left flange assembly and the right flange assembly, and a left flange assembly. An insulating part arranged between the flange, the right flange and the fixing sleeve.
左法兰组件包括左短管10和左法兰20，左短管10与左法兰20焊接在一起，左短管10包括左短管基层11和位于左短管基层内表面上的耐蚀复层30，左法兰20包括左法兰基层21、位于左法兰基层内表面上的流道耐蚀堆焊层40以及位于左法兰基层端部的端面耐蚀堆焊层50；右法兰组件包括右短管60和右法兰70，右短管60与右法兰70焊接在一起，右短管60包括右短管基层61和位于右短管基层内表面上的耐蚀复层30，右法兰70包括右法兰基层71、位于右法兰基层内表面上的流道耐蚀堆焊层40以及位于右法兰基层端部的端面耐蚀堆焊层50；耐蚀复层30的厚度等于流道、端面耐蚀堆焊层的厚度；耐蚀复层以及流道、端面耐蚀堆焊层的厚度大于3mm；固定套80与左法兰20进行焊接连接，与左法兰20焊接时采用E5015焊条和ER50-6焊丝；绝缘部件包括大直套90、小直套100、支撑板110、绝缘垫片120以及密封环130，绝缘垫片120、密封环130设置在左法兰20与右法兰70的连接处，大直套90和小直套100设置在固定套80与右法兰基层71之间，支撑板110设置在大直套90与小直套100之间，固定套80与小直套100之间的间隙内填充环氧树脂。The left flange assembly includes a left short pipe 10 and a left flange 20, and the left short pipe 10 and the left flange 20 are welded together. Multiple layers 30, the left flange 20 includes a left flange base 21, a flow channel corrosion-resistant surfacing layer 40 located on the inner surface of the left flange base, and an end surface corrosion-resistant surfacing layer 50 located at the end of the left flange base; The flange assembly includes a right short pipe 60 and a right flange 70. The right short pipe 60 and the right flange 70 are welded together. The right short pipe 60 includes a right short pipe base layer 61 and a corrosion-resistant coating on the inner surface of the right short pipe base layer. layer 30, the right flange 70 includes a right flange base layer 71, a flow channel corrosion-resistant surfacing layer 40 located on the inner surface of the right flange base layer, and an end face corrosion-resistant surfacing layer 50 located at the end of the right flange base layer; The thickness of the cladding layer 30 is equal to the thickness of the flow channel and the corrosion-resistant surfacing layer on the end surface; the thickness of the corrosion-resistant cladding layer and the flow channel and the corrosion-resistant surfacing layer on the end surface is greater than 3mm; the fixed sleeve 80 is welded to the left flange 20, and is connected with the E5015 welding rod and ER50-6 welding wire are used for welding the left flange 20; the insulating parts include a large straight sleeve 90, a small straight sleeve 100, a support plate 110, an insulating gasket 120 and a sealing ring 130, and the insulating gasket 120 and the sealing ring 130 are set At the junction of the left flange 20 and the right flange 70, the large straight sleeve 90 and the small straight sleeve 100 are arranged between the fixed sleeve 80 and the right flange base layer 71, and the support plate 110 is arranged between the large straight sleeve 90 and the small straight sleeve. 100, the gap between the fixed sleeve 80 and the small straight sleeve 100 is filled with epoxy resin.
流道、端面耐蚀堆焊层为堆焊到碳钢基层上的，二者之间是冶金结合，而不是机械结合，具有较高的结合强度，使用过程中不会出现耐蚀合金复层脱落的问题。The corrosion-resistant surfacing layer of the runner and end face is surfacing on the carbon steel base layer. The two are metallurgically bonded rather than mechanically bonded. They have high bonding strength and no corrosion-resistant alloy layers will appear during use. Shedding problem.
左短管与左法兰、右短管与右法兰之间形成的焊接结构由打底层140、过渡层150、填充层160以及盖面层170组成，打底层140的厚度大于耐蚀复层和耐蚀堆焊层的厚度，打底层采用ER2209焊丝，过渡层采用ER309LMo焊丝，填充层和盖面层采用E5015焊条；对于其中靠近打底层焊缝的过渡层焊缝，要求能够与打底层和填充、盖面层焊缝充分熔合，且能保证打底层焊缝不被稀释。The welding structure formed between the left short pipe and the left flange, and the right short pipe and the right flange is composed of a base layer 140, a transition layer 150, a filling layer 160 and a cover layer 170. The thickness of the base layer 140 is greater than that of the corrosion-resistant cladding layer. and the thickness of the corrosion-resistant surfacing layer, use ER2209 welding wire for the bottom layer, ER309LMo welding wire for the transition layer, and E5015 welding rod for the filling layer and the cover layer; for the transition layer weld near the bottom layer welding seam, it is required to be able to match the bottom layer and the Filling and capping layer welds are fully fused, and can ensure that the bottom layer welds are not diluted.
左法兰、右法兰和固定套选用16Mn锻件，首先进行左法兰、右法兰的焊前尺寸加工，使流道和端面部位比成品尺寸薄3mm。The left flange, right flange and fixed sleeve are made of 16Mn forgings. Firstly, the size of the left flange and right flange is processed before welding, so that the flow channel and end surface are 3mm thinner than the finished product size.
本实用新型在工作时，内腔的介质与左、右短管的耐蚀复层接触，与左、右法兰的流道耐蚀堆焊层接触，不会接触到短管和法兰的碳钢基层，因而绝缘接头的耐蚀性能得到了保证。When the utility model is working, the medium in the inner cavity is in contact with the corrosion-resistant cladding layer of the left and right short pipes, and the corrosion-resistant surfacing layer of the flow channel of the left and right flanges, and will not touch the short pipes and flanges. Carbon steel base layer, so the corrosion resistance of insulating joints is guaranteed.
以上显示和描述了本实用新型的基本原理和主要特征和本实用新型的优点。本行业的技术人员应该了解，本实用新型不受上述实施例的限制，上述实施例和说明书中描述的只是说明本实用新型的原理，在不脱离本实用新型精神和范围的前提下，本实用新型还会有各种变化和改进，这些变化和改进都落入要求保护的本实用新型范围内。本实用新型要求保护范围由所附的权利要求书及其等效物界定。The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620712648.6U CN205824427U (en) | 2016-07-07 | 2016-07-07 | Bimetallic insulating joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620712648.6U CN205824427U (en) | 2016-07-07 | 2016-07-07 | Bimetallic insulating joint |
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| CN205824427U true CN205824427U (en) | 2016-12-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723922A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A fluid connection device with insulation at both ends |
| CN114623295A (en) * | 2022-04-01 | 2022-06-14 | 宁波汇洲生态建设有限公司 | Connecting structure of water supply pipeline and construction method thereof |
| CN115585320A (en) * | 2022-10-10 | 2023-01-10 | 中国核动力研究设计院 | Non-contact electric insulation sealing structure |
| CN116460479A (en) * | 2023-06-20 | 2023-07-21 | 西安泵阀总厂有限公司 | Insulated joint welding process, preparation method and insulated joint |
-
2016
- 2016-07-07 CN CN201620712648.6U patent/CN205824427U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723922A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A fluid connection device with insulation at both ends |
| CN114623295A (en) * | 2022-04-01 | 2022-06-14 | 宁波汇洲生态建设有限公司 | Connecting structure of water supply pipeline and construction method thereof |
| CN115585320A (en) * | 2022-10-10 | 2023-01-10 | 中国核动力研究设计院 | Non-contact electric insulation sealing structure |
| CN115585320B (en) * | 2022-10-10 | 2024-04-26 | 中国核动力研究设计院 | Non-contact type electric insulation sealing structure |
| CN116460479A (en) * | 2023-06-20 | 2023-07-21 | 西安泵阀总厂有限公司 | Insulated joint welding process, preparation method and insulated joint |
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Address after: 710025 Shaanxi Province, Xi'an City, Badong District, Xi'an Modern Textile Industry Park, No. 1369 Baliu Second Road Patentee after: Xi'an Pump Valve General Factory Co.,Ltd. Country or region after: China Address before: 710025 Shaanxi Province, Xi'an City, Bajiang District, Modern Textile Industrial Park, Baliu Second Road No. 1369 Patentee before: XI'AN PUMP & VALVE GENERAL FACTORY Co.,Ltd. Country or region before: China |