CN102734586A - Sealing sleeve connector for being connected with glass reinforced plastic (GRP) pipe, and glass steel pipe used for same - Google Patents
Sealing sleeve connector for being connected with glass reinforced plastic (GRP) pipe, and glass steel pipe used for same Download PDFInfo
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- CN102734586A CN102734586A CN2012101747802A CN201210174780A CN102734586A CN 102734586 A CN102734586 A CN 102734586A CN 2012101747802 A CN2012101747802 A CN 2012101747802A CN 201210174780 A CN201210174780 A CN 201210174780A CN 102734586 A CN102734586 A CN 102734586A
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Abstract
A sealing sleeve connector for being connected with a glass steel pipe (GRP) comprises a GRP lining layer, a middle layer and an external GRP protection layer, wherein channels for containing rubber sealing rings are arranged at the left side and the right side of the lining layer, and the diameter of the sealing rings is larger than the depth of the channel. The invention further discloses a GRP pipe connected with the sleeve connector. The sealing sleeve connector can prevent rubber rings from slipping out from the connector, and reduce the deformation caused by pressurization. The GRP pipe can improve the strength and toughness, and ensure the performance guarantee rate of a resin mortar layer and improve the strength of the GRP pipe under the condition that a sand layer is in non-good quartz sand grading or has lower resin content.
Description
Technical field
The present invention relates to the plumbing field, particularly big at drop, the hydroelectric power plant pressure piping field that pressure is high, particularly, the GRP pipe that relates to a kind of heavy caliber GRP pipe high pressure sealing sleeve interface and be used for this interface.
Background technique
Along with the application of heavy caliber GRP pipe, its high-strength light, corrosion-resistant; Characteristics such as inner wall smooth are able to approval, but higher at pipeline pressure, like 20bar; Diameter is bigger, has run into the difficult problem of general flexible cushion rubber bell and spigot joint or sleeve interface like the field more than the 1000mm, and main cause is that the stretch modulus of frp pipe is lower; Under the state of same strain level, less for the absolute value of its overall dimensional change amount of small-bore pipeline, and when the bore increase; The dimensional changes amount was big when pressure was high, and the sealing load that initial precompression forms reduces very soon, and from the gap of joint socket, skids off.At present the interface shape that adopts of GRP pipe is generally the steel collar, and such collar has welded joint, and inwall is rough, and welded joint bursts apart easily, snaps, yielding, shortcomings such as working life short, leakage proof is poor, not corrosion-resistant, not enough environmental protection.The collar of this interface shape has often arrived the job site and has just produced local etching in addition, and the time limit corrosion fatigue life that this and Glass Steel Tube are estimated does not match fully.As adopt the stainless steel sleeve pipe, then expensive has had a strong impact on the control of cost of production, and is unfavorable for the production requirement of energy-conserving and environment-protective.
In addition; Glass fiber reinforced plastic sand-inclusion pipeline burning into sand layer is resin mortar layer (mixture of silica sand and resin) at present; The effect of this layer is to transmit GRP pipe internal layer and outer field stressed; Improved pipeline rigidity, guaranteed the certain shear strength of pipeline, stratification has taken place when avoiding the check of product flexural property.The mode that the existing glass steel pipeline adopts silica sand and resin directly to mix usually makes the burning into sand layer; Though improved the performance of pipeline to a certain extent; But in the occasion that needs high compression-strength and compression toughness; Existing pipeline still can not meet the demands, thereby needs a kind of pipeline that can satisfy high compression-strength and the requirement of compression toughness of design.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of existing technology; A kind of be used to connect the seal sleeve interface of GRP pipe and the GRP pipe that is used for this interface are provided; To prevent that cushion rubber from skidding off at jointing, reduce simultaneously because pressurization causes the deformation of sleeve interface.In addition; A kind of GRP pipe that is used for this interface also is provided, and improving the intensity and the toughness of pipeline, and is under the situation of non-good quartz sand graduation or lower resin content in the burning into sand layer; Guarantee the performance fraction of resin mortar layer, improve the intensity of GRP pipe.
The object of the invention can take following method to realize:
A kind of seal sleeve interface that is used to connect GRP pipe; It is used to connect the GRP 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 said inside liner is respectively arranged with the groove that is used to hold rubber seal, and the diameter of said seal ring is greater than the degree of depth of said groove.
Preferably, said inside liner middle part also is provided with stop part, and the GRP pipe of the said left and right sides is separately positioned on the left and right sides of said stop part.
Preferably, said mesosphere is steel bushing or carbon fiber layer.
Preferably, said carbon fiber layer is wrapped on the said inside liner.
Preferably, said O-ring seal is the O-ring seal of shore hardness more than 70.
Further, the invention also discloses the GRP pipe that a kind of and said sleeve interface is connected, this GRP pipe comprises internal layer, burning into sand layer and skin from inside to outside successively, and said burning into sand layer makes through following steps:
(1) nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain the modified resin matrix, wherein the weight ratio of nano silicon and/or nm-class active calcium carbonate is 1-8%;
(2) said modified resin matrix and silica sand are mixed, wherein, weight resin is than being 15-18%.
Preferably, the dispersing and mixing in the said step (1) may further comprise the steps:
A, adopt stirrer tentatively to mix nano silicon and/or nano-calcium carbonate and resin;
B, the mixture that will tentatively mix carry out secondary with the vacuum stirring device and disperse.
Preferably, the grain composition of said silica sand is pressed following proportioning:
Particle size range is 10 orders-20 a purpose quartz sand particle, and the quality accounting is 45%;
Particle size range is 30 orders-60 a purpose quartz sand particle, and the quality accounting is 15%;
Particle size range is 70 orders-80 a purpose quartz sand particle, and the quality accounting is 15%;
Particle size range is greater than 90 purpose quartz sand particles, and the quality accounting is 25%.
Because the present invention has adopted above-mentioned technical measures; Make its contrast existing technology that following advantage arranged: to adopt high-modulus sleeve (the hoop tensible rigidity of sleeve is more than 2 times of body), do the time spent, adopt this programme in high pressure; The amount of deformation of sleeve is much smaller than the distortion of pipe end; The pipe end outer wall is adjacent to sleeve lining under pressure, forms the zero clearance, and the seal for pipe joints circle is realized selfsealings in groove.The cushion rubber of high hardness can compress bullet and rise in sleeve, satisfies that cushion rubber did not lose efficacy under the high pressure effect.Adopt tube-in-tube structure to avoid the stress of traditional bell and spigot joint reducer to concentrate the local water resistance that causes with eddy current.Be particularly conducive to the water generating project.In addition, through the nanometer material mixed and dispersed among the present invention technology, be mixed into the double-component nanometer material of 1-8% weight in the resin uniformly; Obtain mixing nano-material modified resin matrix, again this resin matrix and silica sand are fully mixed, form the burning into sand layer; Can under the situation of non-good quartz sand graduation and lower resin content, reach higher intensity and toughness (minimum is greater than 65Mpa, and mean value is greater than 75Mpa); And reduce production costs, reach energy conservation and environment protection.
Description of drawings
Fig. 1 is the structural representation of seal sleeve interface of the present invention;
Fig. 2 is the seal sleeve interface partial enlarged drawing when pressing in the present invention does not add;
Fig. 3 is the seal sleeve interface partial enlarged drawing when pressing in the present invention adds;
Fig. 4 is the structural representation of GRP pipe of the present invention.
Embodiment
Describe implementation of the present invention in detail below in conjunction with embodiment.
Referring to Fig. 1; This is used to connect the seal sleeve interface of GRP pipe; The GRP pipe 4,5 that can connect the left and right sides; 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 that is used to hold rubber seal 6.Pipe diameter 1600mm in the present embodiment, interior pressure 25bar, pipeline wall thickness 25mm; The sleeve interface adopts internal diameter sleeve of the same size; Sleeve interface inwall forms the stop part 7 that is used to prop up pipeline, and the sleeve wall mesosphere is a steel bushing, and the coated with glass fibre reinforced plastics protection of steel bushing outside is outer.The thickness 10mm of steel bushing, frp lining thickness 20mm, O-ring seal are 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 following:
1, adopts roll bending processes steel bushing;
2, the steel bushing derusting by sandblasting is anticorrosion;
3, support steel bushing and driven rotary with supporting wheel, will spray that yarn cuts and fall into the steel bushing inwall of rotation, reach respective thickness with resin with the glass fibre reinforced plastics spray gun
4, behind the products solidifying, to the sleeve finisher with internal surface, cushion rubber groove and the damp block etc. of emery wheel processing sleeve;
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 said groove, referring to Fig. 2-3; When in not applying, pressing, because the effect of seal ring 6 forms gap 8 between GRP pipe 4,5 and sleeve interface; When in applying, pressing, along with the distortion of GRP pipe 4,5, gap 8 disappears.Thereby, do the time spent in high pressure, the amount of deformation of sleeve is much smaller than the distortion of pipe end, and the pipe end outer wall is adjacent to sleeve lining under pressure, forms the zero clearance, and the seal for pipe joints circle is realized selfsealings in groove.
In addition, the mesosphere of this sleeve interface can also be the graphite fiber enhancement layer, graphite fiber enhancement layer inner lining glass fiber reinforced plastic inside liner, and the coated with glass fibre reinforced plastics protection of graphite fiber enhancement layer outside is outer.Frp lining thickness 20mm, carbon fiber layer adopt T300 graphite fiber wound composite, thickness 15mm, glass fibre reinforced plastics external protection thickness 3mm.Carbon fiber layer is corrosion-resistant more secure than steel bushing, and moulding is easier, can adopt Wrapping formed as glass fibre reinforced plastics.Moulding process:
1, Wrapping formed frp lining on mould;
2, on frp lining, twine carbon fiber composite;
3, outer in the outer processed glass steel protection of graphite fiber;
4, on the sleeve finisher with internal surface, cushion rubber groove and the damp block etc. of emery wheel processing sleeve
Referring to Fig. 4; Further, the present invention also comprises the GRP pipe that a kind of and described seal sleeve interface is connected, and this GRP pipe comprises internal layer 9, burning into sand layer 10 and outer 11 from inside to outside successively; Wherein the burning into sand layer makes through following steps: at first; Nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain the modified resin matrix, wherein the weight ratio of nano silicon and/or nm-class active calcium carbonate is 1-8%; Secondly, said modified resin matrix and silica sand are mixed, wherein, weight resin is than being 15-18%.The step of wherein nano silicon and/or nm-class active calcium carbonate being mixed with resin dispersion is: at first, adopt stirrer tentatively to mix with resin nano silicon and/or nano-calcium carbonate; Secondly, the mixture that tentatively mixes being carried out secondary with the vacuum stirring device disperses.
Show through the laboratory research test; Adopt the resin of high tenacity and high tenacity; Such as epoxy polyamide cured resin or vinyl ester resins; The resin mortar compression strength that can under the situation of the resin content of 15-18%, satisfy general quartz sand graduation (like 20 orders-40 order accounting 100%) is higher than 75Mpa, but the main problem that exists is that above-mentioned resin price is high, and it is under the condition of high corrosion resistant or other specific (special) requirements and could uses.
Silica sand through to the variable grain diameter carries out the composite of different proportion; The influence of level pairing compression strength that silica sand is described is bigger; 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 shows that the compression strength that adopts under the following grain composition can meet the demands:
| Particle size range | Quality accounting % |
| 10 orders-20 order | 45％ |
| 30 orders-60 order | 15％ |
| 70 orders-80 order | 15％ |
| ＞90 orders | 25％ |
| Add up to | 100％ |
But the grating of silica sand must size particles dispose respectively, and must have part intermediate particle diameter to want cancel all.And silica sand supplier is to the instability that is mixed of silica sand, be transportation with produce in occur particle diameter easily and separate.Find that through the burning into sand layer of released part pipeline its grain composition is not predefined grating, material mixing is also inhomogeneous simultaneously, causes push pipe intensity dispersion big.Through detection, the product that same batch of material is produced, the peak of its compression strength and minimum can differ more than one times.
Below be that different resins mixture and silica sand mix the push pipe compression strength comparative trial that the back forms the burning into sand layer:
(1) resin is 15 parts
85 parts of silica sands: 20-40 order
Push pipe compression strength: 44.51Mpa
(2) resin is 25 parts
75 parts of silica sands: 20-40 order
Push pipe compression strength: 66.86Mpa
(3) the nano modification resin compound is 15 parts
85 parts of silica sands: 20-40 order
Push pipe compression strength: 82.61Mpa
What be worth explanation is that the GRP pipe among the present invention not only can be used as push pipe, can also wait other pipelines as the excavation pipe.
Claims (8)
1. seal sleeve interface that is used to connect GRP pipe; It is used to connect the GRP 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 said inside liner is respectively arranged with the groove that is used to hold rubber seal, and the diameter of said seal ring is greater than the degree of depth of said groove.
2. the seal sleeve interface that is used to connect GRP pipe according to claim 1 is characterized in that said inside liner middle part also is provided with stop part, and the GRP pipe of the said left and right sides is separately positioned on the left and right sides of said stop part.
3. the seal sleeve interface that is used to connect GRP pipe according to claim 1 and 2 is characterized in that said mesosphere is steel bushing or carbon fiber layer.
4. the seal sleeve interface that is used to connect GRP pipe according to claim 3 is characterized in that said carbon fiber layer is wrapped on the said inside liner.
5. according to the arbitrary described seal sleeve interface that is used to connect GRP pipe of claim 1-4, it is characterized in that said O-ring seal is the O-ring seal of shore hardness more than 70.
6. a GRP pipe that is connected with the arbitrary described seal sleeve interface of claim 1-5 comprises internal layer, burning into sand layer and skin from inside to outside successively, and it is characterized in that: said burning into sand layer makes through following steps:
(1) nano silicon and/or nm-class active calcium carbonate are mixed with resin dispersion, obtain the modified resin matrix, wherein the weight ratio of nano silicon and/or nm-class active calcium carbonate is 1-8%;
(2) said modified resin matrix and silica sand are mixed, wherein, weight resin is than being 15-18%.
7. GRP pipe according to claim 6 is characterized in that the dispersing and mixing in the said step (1) may further comprise the steps:
A, adopt stirrer tentatively to mix nano silicon and/or nano-calcium carbonate and resin;
B, the mixture that will tentatively mix carry out secondary with the vacuum stirring device and disperse.
8. according to claim 6 or 7 described GRP pipes, the grain composition that it is characterized in that said silica sand is by following proportioning:
Particle size range is 10 orders-20 a purpose quartz sand particle, and the quality accounting is 45%;
Particle size range is 30 orders-60 a purpose quartz sand particle, and the quality accounting is 15%;
Particle size range is 70 orders-80 a purpose quartz sand particle, and the quality accounting is 15%;
Particle size range is greater than 90 purpose quartz sand particles, and the quality accounting is 25%.
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 true CN102734586A (en) | 2012-10-17 |
| CN102734586B CN102734586B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN102734586B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816585A (en) * | 2017-10-26 | 2018-03-20 | 中国石油集团渤海石油装备制造有限公司 | A kind of attachment means of large-diameter steel pipe and glass reinforced plastic 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 (7)
| 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 |
| KR101081549B1 (en) * | 2010-12-21 | 2011-11-08 | 화이버텍(주) | Assembly for connecting frp pipes |
| 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 |
-
2012
- 2012-05-31 CN CN201210174780.2A patent/CN102734586B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| KR101081549B1 (en) * | 2010-12-21 | 2011-11-08 | 화이버텍(주) | Assembly for connecting frp pipes |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816585A (en) * | 2017-10-26 | 2018-03-20 | 中国石油集团渤海石油装备制造有限公司 | A kind of attachment means of large-diameter steel pipe and glass reinforced plastic pipe |
| 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 |
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| Publication number | Publication date |
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| CN102734586B (en) | 2016-04-13 |
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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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Granted publication date: 20160413 Termination date: 20180531 |