CN102734586B - A kind of for the seal sleeve interface of connecting glass fiber reinforced plastic and the fiber reinforced plastic pipe for this interface - Google Patents
A kind of for the seal sleeve interface of connecting glass fiber reinforced plastic and the fiber reinforced plastic pipe for this interface Download PDFInfo
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- CN102734586B CN102734586B CN201210174780.2A CN201210174780A CN102734586B CN 102734586 B CN102734586 B CN 102734586B CN 201210174780 A CN201210174780 A CN 201210174780A CN 102734586 B CN102734586 B CN 102734586B
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- reinforced plastic
- fiber reinforced
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- sleeve interface
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Abstract
A kind of seal sleeve interface for connecting glass fiber reinforced plastic; comprise frp lining layer, mesosphere and glass fibre reinforced plastics external protection; the left and right sides of described inside liner is respectively arranged with the groove for holding rubber seal, and the diameter of described seal ring is greater than the degree of depth of described groove.The invention also discloses a kind of fiber reinforced plastic pipe be connected with this cover letter interface.Sealing sleeve interface can prevent cushion rubber from skidding off at jointing, reduces due to the deformation causing sleeve interface of pressurizeing simultaneously.This fiber reinforced plastic pipe, can improve intensity and the toughness of pipeline, and in burning into sand layer be non-good quartz sand graduation or lower resin content, guarantee the performance guarantee rate of resin sand pulp layer, improve the intensity of fiber reinforced plastic pipe.
Description
Technical field
The present invention relates to plumbing field, particularly large at drop, the hydroelectric power plant pressure piping field that pressure is high, particularly, relates to a kind of heavy-caliber fiber reinforced plastic pipe high-pressure sealing sleeve socket joint mouth and the fiber reinforced plastic pipe for this interface.
Background technique
Along with the application of heavy-caliber fiber reinforced plastic pipe, its high-strength light, corrosion-resistant, the features such as inner wall smooth are approved, but it is higher at pipeline pressure, as 20bar, diameter is larger, field as more than 1000mm encounters a difficult problem for Universal flexible cushion rubber bell and spigot joint or sleeve interface, main cause is that the stretch modulus of frp pipe is lower, under the state of same strain level, absolute value for its overall dimensional change amount of small-bore pipeline is less, and when bore increases, during pressure height, size changing amount is large, the sealing load that initial precompression is formed reduces very soon, and skid off from the gap of joint socket.The interface shape that current fiber reinforced plastic pipe adopts is generally the steel collar, and such collar has welded joint, and inwall is rough, the shortcomings such as welded joint easily bursts apart, snap, yielding, working life is short, leakage proof is poor, not corrosion-resistant, inadequate environmental protection.In addition the collar of this interface shape, often arrived job site and just produced local etching, the time limit corrosion fatigue life that this and Glass Steel Tube are estimated does not mate completely.As adopted stainless steel sleeve pipe, then price is high, has had a strong impact on the control of cost of production, and has been unfavorable for the production requirement of energy-conserving and environment-protective.
In addition, current glass fiber reinforced plastic sand-inclusion pipeline burning into sand layer is resin sand pulp layer (mixture of silica sand and resin), fiber reinforced plastic pipe internal layer and outer field stressed is transmitted in the effect of this layer, improve pipeline rigidity, ensure the shear strength that pipeline is certain, when avoiding product flexural property to check, stratification to occur.The mode that existing fiber reinforced plastic pipe adopts silica sand and resin directly to mix usually carrys out obtained burning into sand layer, although improve the performance of pipeline to a certain extent, but needing the occasion of high compression-strength and compression toughness, existing pipeline still can not meet the demands, and thus needs to design a kind of pipeline that can meet high compression-strength and the requirement of compression toughness.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided a kind of for the seal sleeve interface of connecting glass fiber reinforced plastic and the fiber reinforced plastic pipe for this interface, to prevent cushion rubber from skidding off at jointing, reduce due to the deformation causing sleeve interface of pressurizeing simultaneously.In addition, additionally provide a kind of fiber reinforced plastic pipe for this interface, to improve intensity and the toughness of pipeline, and in burning into sand layer be non-good quartz sand graduation or lower resin content, guarantee the performance guarantee rate of resin sand pulp layer, improve the intensity of fiber reinforced plastic pipe.
Object of the present invention can be taked following methods to realize:
A kind of seal sleeve interface for connecting glass fiber reinforced plastic; it is for connecting the fiber reinforced plastic pipe of the left and right sides; this sleeve interface comprises frp lining layer, mesosphere and glass fibre reinforced plastics external protection; the left and right sides of described inside liner is respectively arranged with the groove for holding rubber seal, and the diameter of described seal ring is greater than the degree of depth of described groove.
Preferably, be also provided with stop part in the middle part of described inside liner, the fiber reinforced plastic pipe of the described left and right sides is separately positioned on the left and right sides of described stop part.
Preferably, described mesosphere is steel bushing or carbon fiber layer.
Preferably, described carbon fiber layer is wrapped on described inside liner.
Preferably, described O-ring seal is the O-ring seal of shore hardness more than 70.
Further, the invention also discloses the fiber reinforced plastic pipe that a kind of and described sleeve interface is connected, this fiber reinforced plastic pipe comprises internal layer, burning into sand layer and skin from inside to outside successively, and described burning into sand layer is obtained by following steps:
(1) nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain modified resin matrix, wherein the weight ratio of nano silicon and/or nm-class active calcium carbonate is 1-8%;
(2) described modified resin matrix and silica sand are uniformly mixed, wherein, weight resin is than being 15-18%.
Preferably, the dispersion mixing in described step (1) comprises the following steps:
A, stirrer is adopted tentatively to mix with resin nano silicon and/or nano-calcium carbonate;
B, the mixture vacuum mixer tentatively mixed is carried out twice dispersing.
Preferably, the grain composition of described silica sand is according to the following ratio:
Particle size range is 10 order-20 object quartz sand particles, and quality accounting is 45%;
Particle size range is 30 order-60 object quartz sand particles, and quality accounting is 15%;
Particle size range is 70 order-80 object quartz sand particles, and quality accounting is 15%;
Particle size range is greater than 90 object quartz sand particles, and quality accounting is 25%.
Owing to present invention employs above-mentioned technical measures, make it contrast prior art to have the following advantages: adopt high-modulus sleeve (the hoop tensible rigidity of sleeve is more than 2 times of body), when high pressure effect, adopt this programme, the amount of deformation of sleeve is much smaller than the distortion of pipe end, pipe end outer wall is adjacent to sleeve lining under pressure, and form zero clearance, seal for pipe joints circle realizes selfsealings in groove.The cushion rubber of high hardness can compress bullet and rise in sleeve, and under meeting High Pressure, cushion rubber did not lose efficacy.The stress adopting tube-in-tube structure to avoid traditional bell and spigot joint reducer concentrates the local water resistance caused with eddy current.Be particularly conducive to water generating project.In addition, by the nanometer material mixing dispersion technology in the present invention, the double-component nanometer material of 1-8% weight is mixed in resin uniformly, obtain mixing nano-material modified resin matrix, again this resin matrix and silica sand are fully mixed, form burning into sand layer, can when non-good quartz sand graduation and lower resin content, (minimum is greater than 65Mpa to reach higher intensity and toughness, mean value is greater than 75Mpa), and reduce cost of production, reach the requirement of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of seal sleeve interface of the present invention;
Fig. 2 be the present invention do not add interior pressure time seal sleeve interface partial enlarged drawing;
Fig. 3 be the present invention add interior pressure time seal sleeve interface partial enlarged drawing;
Fig. 4 is the structural representation of fiber reinforced plastic pipe of the present invention.
Embodiment
Implementation of the present invention is described in detail below in conjunction with embodiment.
See Fig. 1; this is used for the seal sleeve interface of connecting glass fiber reinforced plastic; the fiber reinforced plastic pipe 4,5 of the left and right sides can be connected; this sleeve interface comprises frp lining layer 3, mesosphere 2 and glass fibre reinforced plastics external protection 1, and the left and right sides of inside liner 3 is respectively arranged with the groove for holding rubber seal 6.Pipe diameter 1600mm in the present embodiment, interior pressure 25bar, pipeline wall thickness 25mm; sleeve interface adopts internal diameter sleeve of the same size; sleeve interface inwall forms the stop part 7 for propping up pipeline, and sleeve wall mesosphere is steel bushing, and outside steel bushing, coated with glass fibre reinforced plastics protection is outer.The thickness 10mm of steel bushing, frp lining thickness 20mm, O-ring seal is the high hardness cushion rubber of shore hardness more than 70, diameter 25mm, glass fibre reinforced plastics external protection thickness 3mm.The moulding process of this sleeve interface is as follows:
1, roll bending processes steel bushing is adopted;
2, steel bushing derusting by sandblasting is anticorrosion;
3, by supporting wheel supporting steel sleeve driven rotary, will yarn cutting be sprayed with glass fibre reinforced plastics spray gun and fall into the steel bushing inwall of rotation together with resin, reaching respective thickness
4, after products solidifying, with the internal surface of emery wheel processing sleeve, cushion rubber groove and damp block etc. to sleeve finisher;
5, the protection of steel bushing outer wall processed glass steel is outer.
In this sleeve interface, the diameter of seal ring 6 is greater than the degree of depth of described groove, see Fig. 2-3, when not applying interior pressure, due to the effect of seal ring 6, between fiber reinforced plastic pipe 4,5 and sleeve interface, form gap 8, when pressing in applying, along with the distortion of fiber reinforced plastic pipe 4,5, gap 8 disappears.Thus, when high pressure effect, the amount of deformation of sleeve is much smaller than the distortion of pipe end, and pipe end outer wall is adjacent to sleeve lining under pressure, and form zero clearance, seal for pipe joints circle realizes selfsealings in groove.
In addition, the mesosphere of this sleeve interface can also be fibre reinforced layer, fibre reinforced layer inner lining glass fiber reinforced plastic inside liner, and outside fibre reinforced layer, coated with glass fibre reinforced plastics protection is outer.Frp lining thickness 20mm, carbon fiber layer adopts T300 carbon fiber winding composite material, thickness 15mm, glass fibre reinforced plastics external protection thickness 3mm.Carbon fiber layer is more corrosion-resistant than steel bushing more secure, shaping easier, can adopt Wrapping formed as glass fibre reinforced plastics.Moulding process:
1, Wrapping formed frp lining on mould;
2, on frp lining, carbon fiber composite is wound around;
3, outer in the protection of carbon fiber outer processed glass steel;
4, on sleeve finisher with the emery wheel processing internal surface of sleeve, cushion rubber groove and damp block etc.
See Fig. 4, further, the present invention also comprises the fiber reinforced plastic pipe that a kind of with described seal sleeve interface is connected, this fiber reinforced plastic pipe comprises internal layer 9, burning into sand layer 10 and outer 11 from inside to outside successively, wherein burning into sand layer is obtained by following steps: first, nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain modified resin matrix, wherein the weight ratio of nano silicon and/or nm-class active calcium carbonate is 1-8%; Secondly, described modified resin matrix and silica sand are uniformly mixed, wherein, weight resin is than being 15-18%.Be wherein: first adopt stirrer tentatively to mix with resin nano silicon and/or nano-calcium carbonate by the step that nano silicon and/or nm-class active calcium carbonate mix with resin dispersion; Secondly, the mixture vacuum mixer tentatively mixed is carried out twice dispersing.
Room development test display by experiment, adopt the resin of high strength and high tenacity, such as epoxy polyamide cured resin or vinyl ester resins, the resin mortar compression strength of general quartz sand graduation (as 20 order-40 order accountings 100%) can be met higher than 75Mpa when the resin content of 15-18%, but main Problems existing is that above-mentioned resin price is high, and it could be applied under being the condition of high corrosion resistant or other particular/special requirements.
By carrying out the composite of different proportion to the silica sand of variable grain diameter, illustrate that the impact of the level pairing compression strength of silica sand is larger, the intensity of the silica sand resin mortar of the strength ratio poor grain size distribution of the silica sand resin mortar of good grating exceeds more than 30%, and test result display adopts the compression strength under following grain composition to meet the demands:
| Particle size range | Quality accounting % |
| 10 order-20 orders | 45％ |
| 30 order-60 orders | 15％ |
| 70 order-80 orders | 15％ |
| > 90 order | 25％ |
| Add up to | 100％ |
But the grating of silica sand must size particles configure respectively, and part median particle diameter must be had all to cancel.And silica sand supplier is unstable to the mixture of silica sand, be easily occur that particle diameter is separated in transport with production.Found the grating of its grain composition non-predetermined by the burning into sand layer of released part pipeline, material mixing is simultaneously also uneven, causes push pipe intensity dispersion large.After testing, the product that same batch of material is produced, the peak of its compression strength and minimum can differ more than one times.
Below different resins mixture and the rear push pipe compression strength comparative trial forming burning into sand layer of silica sand mixing:
(1) resin 15 parts
Silica sand 85 parts: 20-40 order
Push pipe compression strength: 44.51Mpa
(2) resin 25 parts
Silica sand 75 parts: 20-40 order
Push pipe compression strength: 66.86Mpa
(3) nano modification resin compound 15 parts
Silica sand 85 parts: 20-40 order
Push pipe compression strength: 82.61Mpa
What deserves to be explained is, the fiber reinforced plastic pipe in the present invention, not only can be used as push pipe, other pipelines such as excavation pipe can also be used as.
Claims (6)
1. the seal sleeve interface for connecting glass fiber reinforced plastic, it is for connecting the fiber reinforced plastic pipe of the left and right sides, this sleeve interface comprises frp lining layer, mesosphere and glass fibre reinforced plastics external protection, it is characterized in that: the left and right sides of described inside liner is respectively arranged with the groove for holding rubber seal, and the diameter of described seal ring is greater than the degree of depth of described groove;
Described fiber reinforced plastic pipe, comprises internal layer, burning into sand layer and skin from inside to outside successively, and described burning into sand layer is obtained by following steps:
(1) nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain modified resin matrix, wherein the weight ratio of nano silicon and/or nm-class active calcium carbonate is 1-8%;
(2) described modified resin matrix and silica sand are uniformly mixed, wherein, weight resin is than being 15-18%; The grain composition of described silica sand is according to the following ratio:
Particle size range is 10 order-20 object quartz sand particles, and quality accounting is 45%;
Particle size range is 30 order-60 object quartz sand particles, and quality accounting is 15%;
Particle size range is 70 order-80 object quartz sand particles, and quality accounting is 15%;
Particle size range is greater than 90 object quartz sand particles, and quality accounting is 25%.
2. the seal sleeve interface for connecting glass fiber reinforced plastic according to claim 1, it is characterized in that also being provided with stop part in the middle part of described inside liner, the fiber reinforced plastic pipe of the described left and right sides is separately positioned on the left and right sides of described stop part.
3. the seal sleeve interface for connecting glass fiber reinforced plastic according to claim 1, is characterized in that described mesosphere is steel bushing or carbon fiber layer.
4. the seal sleeve interface for connecting glass fiber reinforced plastic according to claim 3, is characterized in that described carbon fiber layer is wrapped on described inside liner.
5., according to the arbitrary described seal sleeve interface for connecting glass fiber reinforced plastic of claim 1-4, it is characterized in that described O-ring seal is the O-ring seal of shore hardness more than 70.
6. the seal sleeve interface for connecting glass fiber reinforced plastic according to claim 1, is characterized in that the dispersion mixing in described step (1) comprises the following steps:
A, stirrer is adopted tentatively to mix with resin nano silicon and/or nano-calcium carbonate;
B, the mixture vacuum mixer tentatively mixed is carried out twice dispersing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174780.2A CN102734586B (en) | 2012-05-31 | 2012-05-31 | A kind of for the seal sleeve interface of connecting glass fiber reinforced plastic and the fiber reinforced plastic pipe for this interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174780.2A CN102734586B (en) | 2012-05-31 | 2012-05-31 | A kind of for the seal sleeve interface of connecting glass fiber reinforced plastic and the fiber reinforced plastic pipe for this interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734586A CN102734586A (en) | 2012-10-17 |
| CN102734586B true CN102734586B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210174780.2A Expired - Fee Related CN102734586B (en) | 2012-05-31 | 2012-05-31 | A kind of for the seal sleeve interface of connecting glass fiber reinforced plastic and the fiber reinforced plastic pipe for this interface |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107816585B (en) * | 2017-10-26 | 2024-04-16 | 中国石油集团渤海石油装备制造有限公司 | Connecting device for large-caliber steel pipe and glass steel pipe |
| CN109140101A (en) * | 2018-10-18 | 2019-01-04 | 中国化学工程第六建设有限公司 | Glass reinforced plastic pipe pipe fitting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453209Y (en) * | 2000-08-30 | 2001-10-10 | 李世昌 | Glass fiber reinforced plastic tube with stainless steel joint and reinforcement wire |
| CN1689988A (en) * | 2004-04-30 | 2005-11-02 | 陈成 | Sewage biological chemical treatment equipment |
| CN201992253U (en) * | 2011-03-31 | 2011-09-28 | 赵炳泉 | Glass fiber-reinforced plastic pipe joint and mold |
| CN202157754U (en) * | 2011-07-11 | 2012-03-07 | 张玉春 | High-pressure glass fiber reinforced plastic tube connector used under shaft of oil fields |
| CN102418815A (en) * | 2011-11-30 | 2012-04-18 | 杭州新世管道集团有限公司 | Reinforced plastic mortar pipe with improved mortar layer |
| CN202228841U (en) * | 2011-09-21 | 2012-05-23 | 李天洪 | Bell and spigot connecting device of hollow wall winding pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101081549B1 (en) * | 2010-12-21 | 2011-11-08 | 화이버텍(주) | Assembly for connecting frp pipes |
-
2012
- 2012-05-31 CN CN201210174780.2A patent/CN102734586B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453209Y (en) * | 2000-08-30 | 2001-10-10 | 李世昌 | Glass fiber reinforced plastic tube with stainless steel joint and reinforcement wire |
| CN1689988A (en) * | 2004-04-30 | 2005-11-02 | 陈成 | Sewage biological chemical treatment equipment |
| CN201992253U (en) * | 2011-03-31 | 2011-09-28 | 赵炳泉 | Glass fiber-reinforced plastic pipe joint and mold |
| CN202157754U (en) * | 2011-07-11 | 2012-03-07 | 张玉春 | High-pressure glass fiber reinforced plastic tube connector used under shaft of oil fields |
| CN202228841U (en) * | 2011-09-21 | 2012-05-23 | 李天洪 | Bell and spigot connecting device of hollow wall winding pipe |
| CN102418815A (en) * | 2011-11-30 | 2012-04-18 | 杭州新世管道集团有限公司 | Reinforced plastic mortar pipe with improved mortar layer |
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| CN102734586A (en) | 2012-10-17 |
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Effective date of registration: 20171211 Address after: 313199 Zhejiang city in Huzhou Province Economic Development Zone Changxing County Lu Hui Lu and four road intersection southwest corner of the Patentee after: Zhejiang Xinshi Technology Stock Co., Ltd. Address before: The 313199 Zhejiang Economic Development Zone in Changxin Province, the four road and the southwest corner of the intersection of Lu Hui Lu Patentee before: Zhejiang Sinshi Pipe Stock Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20160413 Termination date: 20180531 |