CN1263977C - High pressure connector lug for fiber enhanced thermoplastic composite plastic tube - Google Patents
High pressure connector lug for fiber enhanced thermoplastic composite plastic tube Download PDFInfo
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- CN1263977C CN1263977C CN 200410065058 CN200410065058A CN1263977C CN 1263977 C CN1263977 C CN 1263977C CN 200410065058 CN200410065058 CN 200410065058 CN 200410065058 A CN200410065058 A CN 200410065058A CN 1263977 C CN1263977 C CN 1263977C
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Abstract
The present invention relates to a high pressure connecting joint of a fiber reinforced thermoplastic plastic composite pipe, which comprises a polyolefin electrofusion sleeve in which a metal electric fuse is clamped, wherein the outer surface of the polyolefin electrofusion sleeve is provided with an axial concave-convex structure, and a metal sleeve of which the inner surface is provided with a corresponding axial concave-convex structure is jogged and covered on the exterior of the polyolefin electrofusion sleeve. Glass fiber reinforced plastic is covered on the exterior of the metal sleeve, and the fiber of the base material of the glass fiber reinforced plastic is wound around the circumferential direction of the metal sleeve. Due to the compact and reasonable structure of the present invention, the operating pressure of the fiber reinforced thermoplastic plastic composite pipe which adopts the connecting joint is enhanced obviously; in addition, the present invention has the advantages of convenient manufacture and easy operation; compared with the prior art, the present invention has outstanding substantive characteristics and outstanding progress.
Description
Technical field
The present invention relates to a kind of link that pipeline connects, especially a kind of high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of being used for.
Background technique
As everyone knows, plastics have thermoplasticity and thermosetting property two big classes.At present, except that Glass Steel Tube, most plastic tubes all are thermoplastic pipes.
Thermoplastic composite plastic tube is to be body material with the thermoplastic, and construction layer a kind of with other or that more than one materials are formed is combined into the multilayer tubing structure.Composite pipe utilizes the advantage complementation of constouctional material, reaches better techno-economic effect.
The reinforced thermoplastics composite pipe is matrix with the polyolefine material, adopts materials such as non-metallic fiber silk, band or wire, band as reinforcing material, to improve the voltage endurance capability of pipeline.This pipeline kind is more, comprises that fiber glass thermoplastics pipe, aramid fibre strengthen composite pipe, polyester fibre strengthens composite pipe, hole pattern steel strip-plastic composite pipe, steel skeleton plastic clad pipe etc.This class pipeline can significantly improve the bearing capacity of pipeline by material, structure and the number of plies etc. of control layers of reinforcement, and working pressure can reach more than the 10MPA.Therefore, this class composite pipe can be widely used in industries such as municipal administration, petrochemical industry, mine as pressure piping.
The function that the reinforced thermoplastics pipe joint need be realized is: pipeline section and pipeline section are connected into a pipeline, or pipeline is connected with equipment, and realize the sealing of joint and enough join strengths be provided that promptly joint need be realized three kinds of functions: comprise connection, seal and provide join strength.
In the practical application, it is that thermoplastic pipes is used for the modal method that pipeline connects that the hot melt butt joint is connected with electric smelting.Hdpe pipe hot melt butt joint parameter is with reference to German welding association standard DVS2207-1995, and the supporting pipe fitting of polyethylene is produced and made with reference to GB15558.2-1995 in China, and construction parameter is implemented according to the parameter that different vendor provides.Compare with the pure plastic pipe road, the supporting pipe joint of reinforced thermoplastics pipe removes connection can be outer with sealing, also needs pipe fitting is strengthened, to improve the strength and stiffness of connection part.
At present, the joint that domestic existing hole pattern steel strip-plastic composite pipe and steel skeleton plastic clad pipe use all adopts injection molded polyethylene thermoplastic, the structure manufacturing of cloth electric heating wire then on hole pattern steel plate or steel-wire carcass.Like this, adopt hole pattern steel plate or steel-wire carcass, can improve the strength and stiffness of pipe fitting as the mesosphere, with meet bear interior pressure, balancing axial stress and radially with the requirement of circumference stress.Publication number is that CN1269482A, name are called the Chinese invention patent application (referring to this patent application document accompanying drawing 2,4,6,10,13,16,17,18,19) promptly like this of " connecting means of metal skeleton reinforced composite plastic pipeline ".But, this connecting means still with polyolefine material as the primary load bearing member because polyolefin, especially polythene material belong to viscoelastic material, its mechanical strength is limited, as the primary load bearing member, is difficult to significantly improve the bearing capacity of whole joint with it.
The technological scheme of putting down in writing in the external relevant patent, as the reinforcement of describing among the PCT patent WO 00/55538 " JOINING OF REINFORCED THERMOPLASTIC PIPE (RTP) FOR HIGHPRESSURE TRANSPORTATION APPLICATIONS " (FIG3 sequence number 24), in actual applications, when the interior pressure of bearing is higher, need long axial dimension, the feasibility and the reliability of its making are relatively poor, impracticable.And the enhancing grid of sequence number 62 among the FIG8 when being made into flange, is difficult to be processed into end-face structure.Other forms of reinforcement (sequence number 64,66,68 etc. among the FIG9) as the jointing of high pressure pipe line, then exists radial dimension obviously bigger than normal, and under STRESS VARIATION or temperature effect, defective such as get loose easily.In fact, polythene material for present large-scale promotion application, because material itself has strong polar character, without the complexity of strong oxidizer (adding 10% dichromate as 98% concentrated sulphuric scid soaks), in good time process treating, its surface can not form the effective bonding interface (cannot not being commonly called as stickingly) with certain mechanical strength with other material.This characteristic of polythene material makes it be difficult to compound enhancing, and this has directly influenced the raising of composite pipe working pressure.
Summary of the invention
The technical problem that will solve of the present invention is: at the shortcoming that above prior art exists, propose a kind of compact structure, easy to make, can satisfy connection simultaneously, seal and provide the high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of join strength requirement.
In order to solve above technical problem, the claimant recognizes, for bearing high working inner pressure power, need carry out the hierarchical design of science to the high pressure composite-joint, makes the high pressure composite-joint can bear by interior living hoop and the axial stress of cutting down output.Through comparative experiment repeatedly, drawn following technological scheme: high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of the present invention comprises the polyolefin electric smelting sleeve that accompanies the metal electric fuse, and metal sleeve, wherein said polyolefin electric smelting sleeve outer surface is shaped on axial concaveconvex structure, described metal sleeve internal surface is shaped on corresponding axial concaveconvex structure, and chimeric being wrapped in outside the described polyolefin electric smelting sleeve.This metal sleeve promptly can be an overall structure, screws by screw thread to be wrapped in outside the polyolefin electric smelting sleeve, and also can be involutory structure (being commonly called as the metal Hough), filling the span of a man's arms is wrapped in outside the polyolefin electric smelting sleeve.Wrap up glass fibre reinforced plastics outside the described metal sleeve, the substrate fiber of described glass fibre reinforced plastics circumferentially twines along metal sleeve.
During connection, the polyolefin electric smelting sleeve of internal layer is connected with fiber enhanced thermoplastic composite plastic tube by the electric smelting welding, in bearing, the welding melting zone of electric smelting welding presses the shearing stress that draws of thrust generation, when connecting two section fibre reinforced thermoplastics composite pipes, the innermost layer plastic pipe layer of two sections pipeline sections seals with assurance by the hot melt butt joint, and under the situation of adpting flange, then guarantee sealing by sealing configuration; Metal sleeve is by the concaveconvex structure power transmission, as the main load-carrying member of axial stress; The glass fibre reinforced plastics skin then becomes the main load-carrying member of circumference stress by the substrate fiber of circumferential winding.Be appreciated that the present invention passes through each layer of appropriate design structure, make different materials pass through to organically combine, give full play to characteristic separately, thereby satisfy the requirement that connects, seals and provide join strength, obtain the effect that brings out the best in each other.
The present invention is with the structure of compact and reasonable, make the blasting work pressure of the fiber enhanced thermoplastic composite plastic tube that adopts this jointing surpass 40MPA, and easy to make, easy to implement, compared with prior art, have significant substantive distinguishing features and outstanding progress.Especially what deserves to be mentioned is, because behind the outer parcel glass fibre reinforced plastics, when implementing the electric smelting welding, heat insulation effect is very good, little, the good energy-conserving effect of thermal loss, and because the radially tightening force that parcel glass fibre reinforced plastics produces when welding helps improving welding quality, further strengthen join strength, can obtain the effect of achieving many things at one stroke.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is embodiment one a linkage structure schematic representation.
Fig. 3 is the structural representation of the embodiment of the invention two.
Fig. 4 is embodiment two a linkage structure schematic representation.
Embodiment
Embodiment one
Present embodiment is a fiber enhanced thermoplastic composite plastic tube straight tube high pressure connector lug, and its structure is divided into three layers as shown in Figure 1, and internal layer is a polyolefin electric smelting sleeve 1, and the mesosphere is metal Hough 2 (or metal sleeve), and skin is a glass fibre reinforced plastics 3.The polyolefin electric smelting sleeve 1 of internal layer is by electric smelting welding, realizes two fiber reinforced thermoplastics high pressure composite pipes 4 and be connected (referring to Fig. 2) of 7.
Press the shearing stress that draws of thrust generation in bear in the welding melting zone of electric smelting welding, but the axial strength of the polyolefin electric smelting sleeve 1 of internal layer is limited, under the effect of interior pressure, the load-carrying member of the axial stress of joint inside mainly is a metal Hough 2.For realizing that axial stress is by 1 transmission to metal Hough 2 of polyolefin electric smelting sleeve, needs solution polyolefin electric smelting sleeve 1 is connected with metal Hough 2 interlayers, be that join strength between internal layer and the mesosphere is greater than, equals at least drawing of internal layer polyolefin electric smelting sleeve and cuts intensity, this join strength is the shear strength that interlayer connects.Very poor in view of the bond properties of polyolefine material, especially polythene material and other material, therefore the periphery of polyolefin electric smelting sleeve 1 is processed into the ring shaped slot of the certain width and the degree of depth, the cross section of ring shaped slot can be square, rectangle or circular arc.Metal Hough 2 inner headed faces are processed into the corresponding grooved of periphery grooved with polyolefin electric smelting sleeve 1, both fastenings cooperate, form the annular groove tenon and close linkage structure, to improve the interface join strength of internal layer polyolefin electric smelting sleeve and metallic intermediate layer Hough, realize the transmission (, then can realize the transmission of axial stress) of axial stress by the mode that is threaded as adopting the integrated type metal sleeve.
The axial stress that the linkage interface in glass outer steel 3 and mesosphere bears can be ignored, and the substrate fiber of glass fibre reinforced plastics circumferentially twines along metal sleeve, and bonding strength between the two can guarantee can delamination.
During manufacturing, once quadric injection mould moulding polyolefin electric smelting sleeve or adopt the polyolefin electric smelting sleeve 1 outer wall fluting of wire method moulding after, metal Hough 2 fastenings with matching are cooperated, glass fibre, polyester fibre or the carbon fiber that will soak resin then are wrapped in the metalwork outer wall, form certain thickness reinforced plastic glass fibre and twine enhancement layer 3.
Resin raw material as selected making glass fibre reinforced plastics does not possess higher weather resistance, can be at the weatherability coating of frp layer outer surface coating such as uvioresistant paint.
Experiment shows, after adopting the joint of present embodiment, the bursting pressure of fiber reinforced thermoplastics high pressure composite pipe surpasses 40MPA, be significantly higher than the highest bearing capacity that the prior art various terminal can reach, it is simple in structure, is easy to extensive manufacturing, and site operation is convenient, can guarantee that fiber reinforced thermoplastics high pressure composite pipe connects nothing and reveals, and long service life.In addition, because glass fibre reinforced plastics is poor thermal conductivity, therefore, during the electric smelting welding, skin is difficult past hot phenomenon, the heat insulation effect ideal, and welding quality is improved.
Embodiment two
The fiber enhanced thermoplastic composite plastic tube flange high pressure connector lug of present embodiment as shown in Figure 3, its basic system and embodiment one are similar, also be divided into three layers, i.e. the metal Hough in the polyolefin electric smelting sleeve 1 of internal layer, mesosphere or metal sleeve 2, outer field glass fibre reinforced plastics 3.Difference is that metal sleeve (or Hough) member designs becomes the multidiameter shaft shape, forms the prominent ring that can be connected with flange behind the fw frp.Ifold flange 21,24 is enclosed within on the outermost surface, and the tail end seam is stuck in the prominent ring place that forms behind the metal multidiameter shaft fw frp, axially locating, thus can realize connection (referring to Fig. 4) with the relevant flange 25 of other pipeline or equipment 28.
In order to obtain reliable sealing effect, Ifold flange 21,24 terminations are inlaid with sealing seat 23, and during connection, clamping metal or nonmetal seal ring 26 are revealed to environment to prevent pipeline internal medium; The bore area of sealing seat 23 has groove, the nonmetal seal ring 22 that setting-in and fiber reinforced thermoplastics high pressure composite pipe polyolefin inner tube outer surface 20 fit tightly.Be lined with lining 27 in the pipeline endoporus, the realization radial seal that cooperatively interacts prevents the fiber-reinforced layer seepage of pipeline internal medium to fiber reinforced thermoplastics high pressure composite pipe, avoids layering to lose efficacy.
Concrete make, work progress, can be in conjunction with Fig. 3, Fig. 4, and reference example one, do not give unnecessary details in addition.
Combinations thereof flange 21,24 can dock welding fabrication, socket weld moulding or solid forging machine shaping.
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. high pressure connector lug for fiber enhanced thermoplastic composite plastic tube, comprise the polyolefin electric smelting sleeve that accompanies the metal electric fuse, it is characterized in that: also contain metal sleeve, described polyolefin electric smelting sleeve outer surface is shaped on axial concaveconvex structure, described metal sleeve internal surface is shaped on corresponding axial concaveconvex structure, and chimeric being wrapped in outside the described polyolefin electric smelting sleeve, wrapping up glass fibre reinforced plastics outside the described metal sleeve, the substrate fiber of described glass fibre reinforced plastics circumferentially twines along metal sleeve.
2. according to the described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of claim 1, it is characterized in that: described metal sleeve is an overall structure, screws by screw thread to be wrapped in outside the polyolefin electric smelting sleeve.
3. according to the described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of claim 1, it is characterized in that: described metal sleeve is involutory structure, fills the span of a man's arms to be wrapped in outside the polyolefin electric smelting sleeve.
4. according to claim 2 or 3 described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube, it is characterized in that: the substrate fiber of described glass fibre reinforced plastics is glass fibre, polyester fibre or carbon fiber, and described frp layer outer surface is coated with the weatherability coating layer.
5. according to the described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of claim 3, it is characterized in that: the periphery of described polyolefin electric smelting sleeve is shaped on the ring shaped slot that the cross section is square, rectangle or circular arc, described metal sleeve inner headed face is shaped on corresponding grooved, and both fastenings cooperate.
6. according to claim 2 or 3 described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube, it is characterized in that: described metal sleeve is made the multidiameter shaft shape, outer fw frp forms prominent ring, Ifold flange is enclosed within on the skin, and the tail end seam is stuck in the prominent ring place axially locating that forms behind the metal multidiameter shaft fw frp.
7. according to the described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of claim 6, it is characterized in that: described Ifold flange termination is inlaid with sealing seat, clamping seal ring during connection.
8. according to the described high pressure connector lug for fiber enhanced thermoplastic composite plastic tube of claim 7, it is characterized in that: the bore area of described sealing seat has groove, the seal ring that setting-in and fiber reinforced thermoplastics high pressure composite pipe polyolefin inner tube outer surface fit tightly.
9. described according to Claim 8 high pressure connector lug for fiber enhanced thermoplastic composite plastic tube is characterized in that: be lined with lining in the pipeline endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410065058 CN1263977C (en) | 2004-10-20 | 2004-10-20 | High pressure connector lug for fiber enhanced thermoplastic composite plastic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410065058 CN1263977C (en) | 2004-10-20 | 2004-10-20 | High pressure connector lug for fiber enhanced thermoplastic composite plastic tube |
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| CN1601168A CN1601168A (en) | 2005-03-30 |
| CN1263977C true CN1263977C (en) | 2006-07-12 |
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| CN 200410065058 Active CN1263977C (en) | 2004-10-20 | 2004-10-20 | High pressure connector lug for fiber enhanced thermoplastic composite plastic tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11754215B2 (en) | 2020-07-20 | 2023-09-12 | Saudi Arabian Oil Company | Apparatus and method for friction welding of reinforced thermosetting resin pipe joints |
| US11761571B2 (en) | 2020-07-20 | 2023-09-19 | Saudi Arabian Oil Company | Apparatus and method for electrofusion welding of reinforced thermosetting resin pipe joints |
| US11794418B2 (en) | 2020-07-20 | 2023-10-24 | Saudi Arabian Oil Company | Apparatus and method for threaded-welded reinforced thermosetting resin pipe joints |
| US12055253B2 (en) | 2020-12-17 | 2024-08-06 | Saudi Arabian Oil Company | Apparatus and method for bonding tie layers on reinforced thermosetting resin laminates for use in welding thermoset composite pipe joints |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085066A (en) * | 2018-08-27 | 2018-12-25 | 福建益峰科技有限公司 | Plastic cement or fibre pipe deferent internal pressure detection structure and preparation method thereof |
-
2004
- 2004-10-20 CN CN 200410065058 patent/CN1263977C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11754215B2 (en) | 2020-07-20 | 2023-09-12 | Saudi Arabian Oil Company | Apparatus and method for friction welding of reinforced thermosetting resin pipe joints |
| US11761571B2 (en) | 2020-07-20 | 2023-09-19 | Saudi Arabian Oil Company | Apparatus and method for electrofusion welding of reinforced thermosetting resin pipe joints |
| US11794418B2 (en) | 2020-07-20 | 2023-10-24 | Saudi Arabian Oil Company | Apparatus and method for threaded-welded reinforced thermosetting resin pipe joints |
| US12055253B2 (en) | 2020-12-17 | 2024-08-06 | Saudi Arabian Oil Company | Apparatus and method for bonding tie layers on reinforced thermosetting resin laminates for use in welding thermoset composite pipe joints |
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| Publication number | Publication date |
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| CN1601168A (en) | 2005-03-30 |
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Owner name: AEROSUN CORP. Free format text: FORMER NAME: HANGTIAN CHENGUANG CO., LTD., NANJING |
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Address after: 210006 Jiangsu province is the city of Nanjing Road No. 1 Patentee after: Aerosun Corp. Address before: 210006 Jiangsu province is the city of Nanjing Road No. 1 Patentee before: Hangtian Chenguang Co., Ltd., Nanjing |
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Application publication date: 20050330 Assignee: NANJING CHENGUANG OPR COMPOSITE PIPE ENGINEERING CO., LTD. Assignor: Aerosun Corp. Contract record no.: 2013320000091 Denomination of invention: High pressure connector lug for fiber enhanced thermoplastic composite plastic tube Granted publication date: 20060712 License type: Exclusive License Record date: 20130312 |
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Change date: 20160317 Contract record no.: 2013320000091 Assignee after: NANJING CHENGUANG COMPOSITE PIPE ENGINEERING CO., LTD. Assignee before: NANJING CHENGUANG OPR COMPOSITE PIPE ENGINEERING CO., LTD. |
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