CN203230985U - Pipeline sealing connection device - Google Patents
Pipeline sealing connection device Download PDFInfo
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- CN203230985U CN203230985U CN 201320178797 CN201320178797U CN203230985U CN 203230985 U CN203230985 U CN 203230985U CN 201320178797 CN201320178797 CN 201320178797 CN 201320178797 U CN201320178797 U CN 201320178797U CN 203230985 U CN203230985 U CN 203230985U
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Abstract
The utility model provides a pipeline sealing connection device. The pipeline sealing connection device comprises a first pipeline, a second pipeline, a first flange and a second flange, wherein the first flange is connected to the pipe ends of the first pipeline; the second flange is connected to the pipe ends of the second pipeline; the first flange and the second flange are in matched correspondence; corresponding thermal isolation grooves are formed in the opposite surfaces of the first flange and the second flange; injection holes connected to the thermal isolation grooves are formed in the first flange and/or the second flange, so that the butted connection is easy, the connection intensity is ensured, and the service life of the pipelines is improved.
Description
Technical field
The utility model relates to anti-corrosion pipeline and connects technical field of sealing technology, particularly a kind of seal for pipe joints connection set.
Background technique
Pipeline is the device for delivery of the fluid of gas, liquid or band solid particle that is connected into pipe, pipe coupling and valve etc.Because pipeline can suffer the corrosion of soil, air and fed sheet of a media (oil, rock gas etc.), so need carry out preservative treatment to pipeline.Avoiding causing the leakage of media such as oil, gas when the media such as transferring oil, gas, and cause transportation to be interrupted and befouling environment, even the harm such as fire that may cause.
Pipeline corrosion protection refers to the measure for slowing down or preventing pipeline under the chemistry of inside and outside medium, electrochemical action or be etched and gone bad by the metabolic activity of microorganism.
What existing pipeline adopted is composite metal plastic pipe, it is to be that the coated special plastic material thermal spraying of matrix, inwall once forms effective internal and external anti-corrosive coating by steel pipe, after curing and plasticizing, form even, fine and close, the smooth plastic coating of one deck at the metallic conduit inner and outer surface, become a kind of novel steel-plastic composite pipe.Present this aseptic technic is domestic state-of-the-art technology, it integrates the resistance to chemical corrosion of the superior mechanical property of steel and macromolecular material brilliance, greatly prolonged the working life of steel pipe, had unique resistance to acids and bases, resistance to wear, do not have fouling, help advantage such as lubricated, anti-negative pressure.Composite steel tube has superior corrosion resistance and smaller surface friction drag, is highly suitable for the conveying of media such as plumbing, seawater, warm water, oil, gas, and PVC (PVC) plastic-coated steel is applicable to the conveying of media such as draining, seawater, oil, gas.
But the internal and external anti-corrosive steel-plastic composite pipe is the easiest in actual applications, and what go wrong is interface.And the steel-plastic composite pipe of the following caliber of DN700 is limited by caliber, directly manually can't enter after the welding and carry out internal joint patch in the pipeline, therefore this class pipeline need take special Placement namely will guarantee the quality that connects, and guarantees the complete of the inner corrosion-inhibiting coating in interface position again.The composite pipe Placement of DN700 and following caliber mainly contains at present: inner liner stainless steel head welding (as shown in Figure 1) and double-sealing welding (as shown in Figure 2) dual mode.
The welding of inner liner stainless steel head has very high antiseptic property, but has found to exist problems in actual applications:
1. the inwall stainless steel is very thin, and counterpart is very difficult, and is loaded down with trivial details not easy to operate, and interior welding bead is stainless steel and outer welding bead is Ordinary Steel, forms very big internal stress.
2. because internal stress is bigger, and inner liner stainless steel welding bead expansion ratio is bigger than carbon steel, so welding bead is very obvious to temperature variation, the welding bead outer wall often occurs and crackle occurs, need repeatedly repair welding situation.Weld bond is withstand voltage can not to surpass 2.0MPa, and because inner liner stainless steel is thinner, pressure is excessive to cause stainless steel generation plasticity hole enlargement distortion, easily causes moulding pull-up and falls, even cause whole pipe to mould pull-up falling.This situation has had precedent.
3. the local material of inner liner stainless steel welding bead " sex change " causes corrosion resistance to reduce greatly.Be difficult to satisfy requirement for anticorrosion.The antiseptic property grade is general.
4. the welding bead place is because easily going wrong, thus the general low pressure 2.0MPa of water delivery following about 15 years; High pressure is greater than the anticorrosion life-span of 2.0MPa shorter (aqueduct).
The double-sealing welding uses external welding and inside " O " type rubber ring to play the effect of double-sealing, and insulated tank is that air groove does not have thermoinsulation material.This kind weld bond voltage withstand class height, antiseptic property is good, make things convenient for counterpart during welding, the common welding rod welding gets final product, when carrying out the welding of two flanges, " O " type rubber ring that seals is ablated because of the heat conduction easily but in actual applications,, and then cause fed sheet of a media to infiltrate pipeline junction and cause corrosion, greatly reduce the working life of pipeline.
In summary, when adopting the double-sealing technology in welding, producing a large amount of heat can be directly by through " O " type rubber seal of insulated tank, and then cause " ablation " of rubber seal, even the breakoff phenomenon that causes because of " ablation " also often takes place in undercoating 24, bring potential risk to pipe applications, directly influenced the working life of anti-corrosion pipeline.
How a kind of seal for pipe joints connection set is provided, and can overcome above-mentioned technical problem becomes the technical problem that needs to be resolved hurrily.
The model utility content
The technical problems to be solved in the utility model is how a kind of assembling pipe joint is provided, and can overcome pipeline counterpart difficulty, and the site operation welding efficiency is extremely low, a little less than the weld strength and owing to pipeline junction is corroded, and reduces the problems such as working life of pipeline.
For solving the problems of the technologies described above, the utility model provides a kind of seal for pipe joints connection set, and a kind of seal for pipe joints connection set is characterized in that, comprising: first pipeline, second pipeline, first flange, second flange; Described first flange is connected in the pipe end of described first pipeline, and described second flange is connected in the pipe end of described second pipeline, and described first flange is complementary corresponding with described second flange;
Wherein, on the opposing side of described first flange and second flange, be provided with corresponding insulated tank; And described first flange and/or second flange are provided with the injecting hole that is connected with described insulated tank.
Preferably, further comprise, on the opposing side of described first flange and second flange, be provided with the positioning means that cooperatively interacts.
Preferably, described positioning means comprises positioning boss 7, and the positioning groove 8 that matches with described positioning boss 7.
Preferably, the joint, edge of described first flange and second flange is provided with corresponding groove 9.
Preferably, described groove 9 angles are between 20 to 30 degree.
Preferably, the caliber of described first pipeline and second pipeline is between between the 150mm to 1200mm.
A kind of seal for pipe joints connection set that the utility model provides, overcome used " O " type rubber ring of former double-sealing soldered splice, easy ablative degradation when pipeline welding, influence sealing effect, cause potential hidden danger of quality, the heat conduction is to the destruction of antirust coating in pipeline when effectively intercepting welding by being arranged on insulated tank in pipe ends adpting flange and the flange; And by being connected injecting hole with insulated tank, liquid pliability epoxy resin is injected insulated tank, and after solidifying through flowing, epoxy resin enriches and is filled in the insulated tank, good sealing has completely cut off water and has contacted with the direct of carbon steel, makes the antiseptic property of connection part more reliable.Thereby make that the connection part of pipeline is more reliable, have higher compressive strength and working life.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment and technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment and the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is inner liner stainless steel welded structure schematic representation in the prior art;
Fig. 2 is double-sealing welded structure schematic representation in the prior art;
Fig. 3 is a kind of seal for pipe joints connection set structure sectional exploded view that the utility model provides;
Fig. 4 is that a kind of seal for pipe joints connection set structure that the utility model provides is analysed and observe connection diagram.
Embodiment
To engage the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to shown in Figure 3ly, Fig. 3 is a kind of assembling pipe joint structure sectional exploded view that the utility model provides.
A kind of seal for pipe joints connection set that the utility model provides comprises: first pipeline 1, second pipeline 2, first flange 3, second flange 4; Described first flange 3 is connected in the pipe end of described first pipeline 1, and described second flange 4 is connected in the pipe end of described second pipeline 2, and described first flange 3 is complementary corresponding with described second flange 4;
Wherein, on the opposing side of described first flange 3 and second flange 4, be provided with corresponding insulated tank 5; And described first flange 3 and/or second flange 4 are provided with the injecting hole 6 that is connected with described insulated tank 5.
Please in conjunction with Fig. 3, with reference to shown in Figure 4, Fig. 4 is that a kind of assembling pipe joint structure that the utility model provides is analysed and observe connection diagram.
The utility model is by adopting two flanges; first flange 3 with realize being connected of first pipeline 1 and second pipeline 2 being connected of second flange 4; carry out the corrosion resistant coating construction of inner and outer surface together by the corrosion protection technology of standard in company with first pipeline 1 and second pipeline 2, guarantee that flange facing has the protection of corrosion-inhibiting coating.
Particularly, first flange 3 and second flange, 4 opposing sides are provided with insulated tank 5, after being connected, first flange 3 and second flange 4 form bigger adiabatic space, the heat conduction is to the destruction of first pipeline 1 and second pipeline, 2 inner anticorrosioning coatings in the time of can effectively intercepting welding when the method that adopts arc welding is welded, therefore, the connection set that the utility model provides does not damage the anticorrosive coat of inner-walls of duct, thereby guaranteed the integrity of inner-walls of duct anticorrosive coat, the scene need not internal joint patch, has solved medium effectively to the Corrosion of Pipeline problem.
And, be provided with the injecting hole 6 that is connected with described insulated tank 5 by described first flange 3 and/or second flange 4, the pliability epoxy resin 10 that after welding, injects by injecting hole 6, the sealing configuration that forms, avoided original double-sealing to be connected in the welding process ablative degradation to sealing material, and this kind interface uses common welding rod J422J502 to get final product, low price, the welding procedure maturation, the ring rigidity that had both kept steel pipe, tensile strength and compressive strength, the good advantage of anti-wriggling performance, it is corrosion-resistant that the while has plastic tube again, the characteristics that fluid resistance is little.
A kind of seal for pipe joints connection set that the utility model provides, in order to reach first flange 3 and second flange 4 is precisely located, first flange 3 and second flange, 4 opposing sides are provided with the positioning means that cooperatively interacts.
Described positioning means comprises positioning boss 7, and the positioning groove 8 that matches with described positioning boss 7.Described positioning boss 7 can be arranged on the surface of contact of described first flange, 3 relative second flanges 4, described positioning groove 8 and described positioning boss 7 corresponding being arranged on described second flange 4, otherwise, also can.Described positioning boss 7 can be for a plurality of with positioning groove 8.In addition, the function of above-mentioned location refers to illustrate by locating bump and positioning groove 8, in fact, as long as can realize locating function and can reach first flange 3 and the positioning means of second flange, 4 Dock With Precision Positions can, therefore, described positioning means is not limited to foregoing.
A kind of seal for pipe joints connection set that the utility model provides in order to reach better bonding area and weld strength, is provided with corresponding groove 9 in the joint, edge of described first flange 3 and second flange 4.Described groove 9 angles are between 20 to 30 degree.
The utility model, reflooded pliability epoxy resin 10 formed sealing configurations have avoided original double-sealing to be connected in the welding process ablative degradation to sealing material after welding, keep ring rigidity, tensile strength and the compressive strength of steel pipe, the good advantage of anti-wriggling performance, had the characteristics that plastic tube is corrosion-resistant, fluid resistance is little simultaneously again.Adopt this kind Placement to be applicable to the anti-corrosion pipeline of φ 150mm to φ 1200mm caliber, be particularly suitable for can't internal joint patch DN700 and following water supply line, easy construction is invested for a short time, has bright market prospects and social benefit, economic benefit.
In order to make welding more firm, sealing is better, and the utility model is by intensity and the weld strength of the sealing that further raising is set of groove 9.
To sum up, the utility model is by connecting first flange 3 and second flange 4, be that first pipeline 1 is connected with second pipeline 2, because first flange 3 and second flange 4 are provided with insulated tank 5, merge the adiabatic cavity of back formation at first flange 3 and second flange 4, can stop internally coated ablation phenomenon effectively during welding, therefore this kind linkage structure does not damage the anticorrosive coat of inner-walls of duct, thereby guaranteed the integrity of inner-walls of duct anticorrosive coat, the scene need not internal joint patch, has solved medium effectively to the Corrosion of Pipeline problem.And after pipeline welding, by injecting hole 6 liquid pliability epoxy resin 10 is injected insulated tank 5, after the curing of flowing, epoxy resin 10 enriches and is filled in the insulated tank 5, formed first sealing, and then good sealing completely cut off water and contacted with the direct of carbon steel, makes the antiseptic property of connection part more reliable.
In addition, the utility model can be by positioning means with first flange 3 and second flange 4 location and close, and weld by being arranged on first flange 3 is connected edge with second flange 4 groove 9 positions, realize the connection of anti-corrosion pipeline, the sealing of the formation second layer has further improved the intensity of welding.
Existing used " O " type rubber ring of double-sealing soldered splice is to embed welding again in the insulated tank 5 earlier, easy ablative degradation when pipeline welding, influence sealing effect, cause potential hidden danger of quality, and the utility model is sealing material to be injected insulated tank 5 after adopting welding again, avoided sealing material in welding process ablation and destroy sealability.
Different with " O " type rubber ring that existing double-sealing soldered splice is used, the design has used liquid pliability epoxy resin 10 through solidifying to form the sealing configuration of consolidation, by pressure injection-moulded filling fully in insulated tank 5, and epoxy resin 10 has extremely strong adhesion with tube wall, different with original " O " type rubber ring, this kind sealing material sealability is better.
Flange of the present utility model is provided with positioning device, so easy for installation, it is higher to connect precision after the counterpart.
Compare with inner liner stainless steel head welded joint, the job site need not large-scale and special-purpose machines and tools, and speed of application is fast, has improved working condition, has improved manufacturing efficiency.And weld bond internal plastic coating layer amount of deformation is very little, does not influence antiseptic property, and weld bond voltage withstand class height can be applicable to high pressure pipe line and connects.The weld bond durability can reach more than 50 years in aqueduct is used.
The preferred implementation of a kind of seal for pipe joints connection set that the above only provides for the utility model does not constitute the restriction to the utility model protection domain.The mode that number of components among this embodiment is not limited to adopt among the embodiment; any any modification of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present utility model.
Claims (6)
1. a seal for pipe joints connection set is characterized in that, comprising: first pipeline, second pipeline, first flange, second flange; Described first flange is connected in the pipe end of described first pipeline, and described second flange is connected in the pipe end of described second pipeline, and described first flange is complementary corresponding with described second flange;
Wherein, on the opposing side of described first flange and second flange, be provided with corresponding insulated tank; And described first flange and/or second flange are provided with the injecting hole that is connected with described insulated tank.
2. device according to claim 1 is characterized in that, further comprises, on the opposing side of described first flange and second flange, is provided with the positioning means that cooperatively interacts.
3. device according to claim 2 is characterized in that, described positioning means comprises positioning boss, and the positioning groove that matches with described positioning boss.
4. device according to claim 1 is characterized in that, the joint, edge of described first flange and second flange is provided with corresponding groove.
5. device according to claim 4 is characterized in that, described groove angle is between 20 to 30 degree.
6. device according to claim 1 is characterized in that, the caliber of described first pipeline and second pipeline is between between the 150mm to 1200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178797 CN203230985U (en) | 2013-04-10 | 2013-04-10 | Pipeline sealing connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178797 CN203230985U (en) | 2013-04-10 | 2013-04-10 | Pipeline sealing connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230985U true CN203230985U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320178797 Expired - Lifetime CN203230985U (en) | 2013-04-10 | 2013-04-10 | Pipeline sealing connection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203230985U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644407A (en) * | 2013-12-11 | 2014-03-19 | 南京斯迈柯特种金属装备股份有限公司 | Double-sealing flange structure |
| CN107558621A (en) * | 2017-09-11 | 2018-01-09 | 重庆茂竖林业开发有限公司 | A kind of bindiny mechanism for heat preservation plate material |
| CN107642649A (en) * | 2017-09-22 | 2018-01-30 | 中建八局第二建设有限公司 | A kind of construction pressure-resistant pipeline and its connecting installation structure |
| CN107642647A (en) * | 2017-09-19 | 2018-01-30 | 成都贝根管道科技有限公司 | Butt welding attachment structure and its construction method for plastic lining composite steel pipe |
| CN107940137A (en) * | 2017-11-22 | 2018-04-20 | 浙江邝记汽车零部件有限公司 | A kind of ring flange easy to install |
| CN108758131A (en) * | 2018-06-28 | 2018-11-06 | 江阴市恒润重工股份有限公司 | Natural gas transportation flange assembly |
| CN108895225A (en) * | 2018-09-17 | 2018-11-27 | 江西中烟工业有限责任公司 | A kind of pipe-line system and its constructive method of clean room |
| CN110230738A (en) * | 2019-06-27 | 2019-09-13 | 北京航天新风机械设备有限责任公司 | A kind of edge joint of suitable high energy beam penetration fustion welding |
| CN112728241A (en) * | 2020-12-17 | 2021-04-30 | 沈阳明科控制腐蚀技术有限公司 | Anti-corrosion pipeline welding structure adopting flange connection and construction method |
| CN112923145A (en) * | 2019-12-06 | 2021-06-08 | 中国石油天然气股份有限公司 | Flange sealing device |
-
2013
- 2013-04-10 CN CN 201320178797 patent/CN203230985U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644407A (en) * | 2013-12-11 | 2014-03-19 | 南京斯迈柯特种金属装备股份有限公司 | Double-sealing flange structure |
| CN107558621A (en) * | 2017-09-11 | 2018-01-09 | 重庆茂竖林业开发有限公司 | A kind of bindiny mechanism for heat preservation plate material |
| CN107642647A (en) * | 2017-09-19 | 2018-01-30 | 成都贝根管道科技有限公司 | Butt welding attachment structure and its construction method for plastic lining composite steel pipe |
| CN107642647B (en) * | 2017-09-19 | 2023-09-05 | 成都共同制管有限公司 | Butt welding connection structure for plastic-lined composite steel pipe and construction method thereof |
| CN107642649B (en) * | 2017-09-22 | 2023-06-20 | 中建八局第二建设有限公司 | Building construction pressure-resistant pipeline and connection mounting structure thereof |
| CN107642649A (en) * | 2017-09-22 | 2018-01-30 | 中建八局第二建设有限公司 | A kind of construction pressure-resistant pipeline and its connecting installation structure |
| CN107940137A (en) * | 2017-11-22 | 2018-04-20 | 浙江邝记汽车零部件有限公司 | A kind of ring flange easy to install |
| CN108758131A (en) * | 2018-06-28 | 2018-11-06 | 江阴市恒润重工股份有限公司 | Natural gas transportation flange assembly |
| CN108758131B (en) * | 2018-06-28 | 2019-12-06 | 江阴市恒润重工股份有限公司 | Natural gas conveying flange assembly |
| CN108895225A (en) * | 2018-09-17 | 2018-11-27 | 江西中烟工业有限责任公司 | A kind of pipe-line system and its constructive method of clean room |
| CN110230738A (en) * | 2019-06-27 | 2019-09-13 | 北京航天新风机械设备有限责任公司 | A kind of edge joint of suitable high energy beam penetration fustion welding |
| CN112923145A (en) * | 2019-12-06 | 2021-06-08 | 中国石油天然气股份有限公司 | Flange sealing device |
| CN112728241A (en) * | 2020-12-17 | 2021-04-30 | 沈阳明科控制腐蚀技术有限公司 | Anti-corrosion pipeline welding structure adopting flange connection and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |