CN110654029A - Reinforced strip spirally-wound polyethylene composite pressure pipe and connecting method thereof - Google Patents
Reinforced strip spirally-wound polyethylene composite pressure pipe and connecting method thereof Download PDFInfo
- Publication number
- CN110654029A CN110654029A CN201910966801.6A CN201910966801A CN110654029A CN 110654029 A CN110654029 A CN 110654029A CN 201910966801 A CN201910966801 A CN 201910966801A CN 110654029 A CN110654029 A CN 110654029A
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- China
- Prior art keywords
- polyethylene
- pressure pipe
- wall
- composite pressure
- pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/127—Rigid pipes of plastics with or without reinforcement the walls consisting of a single layer
- F16L9/128—Reinforced pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0222—Mechanical pre-treatments, e.g. reshaping without removal of material, e.g. cleaning by air blowing or using brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
Abstract
The invention discloses a reinforced strip spirally wound polyethylene composite pressure pipe and a connecting method thereof. The invention does not need to wind and seal the outer wall of the composite pressure pipe, greatly reduces the production cost, simultaneously, the connection of the pipe is not influenced by the pipe breakage of the pipe in the construction site, and the inner wall of the pipe is utilized for welding, so the outer wall of the pipe does not need to be specially protected in the transportation process, and the transportation cost is further reduced.
Description
Technical Field
The invention relates to a pressure pipe, in particular to a reinforced strip spirally wound polyethylene composite pressure pipe and a connecting method thereof.
Background
Traditional polyethylene pipe material adopts the mode of extruding in succession to produce more, receives the restriction of production technology, and tubular product bore and pressure all receive certain restriction, in order to obtain the anticorrosive tubular product of polyethylene of bigger bore and bigger pressure, spiral winding type polyethylene composite pipe production technology has obtained application and rapid development. Along with the increase of bore and pressure, original connection technique is no longer suitable for, simultaneously to reinforcing strip spiral winding polyethylene composite pipe, the many unevenness of outer wall and for furthest's increase pressure and rigidity of tubular product, the tubular product outer wall is mostly upright rib structure, when adopting the external connection, need at first handle the tubular product outer wall and level, the mode of the polyethylene tablet winding turning of adopting more, but this kind of mode efficiency is lower and the cost is higher, because it is heavier to seal turning equipment, mostly be professional equipment, tubular product can't carry out the outer wall after the on-the-spot broken pipe and seal the turning, can't carry out tubular product connection.
Disclosure of Invention
The invention provides a reinforced strip spirally wound polyethylene composite pressure pipe, which can conveniently realize the connection of spirally wound polyethylene composite pressure pipes and solve the problems of efficiency and pipe connection after pipe breakage.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a reinforcing strip spiral winding polyethylene composite pressure pipe, it includes that the reinforcing stands rib, reinforcing wire net and the anticorrosive polyethylene plastics of ectonexine compound, is equipped with the polyethylene nipple joint of electrified heater wire on composite pressure pipe port inner wall, the heating wire twine in on the outer wall of polyethylene nipple joint, just the heating wire with composite pressure pipe's outer wall contact.
As a limitation: be equipped with in the polyethylene nipple joint and prop tight device, prop tight device and include outer steel ring and adjusting screw, outer steel ring is equipped with the opening, is equipped with two fixed ears that extend to outer steel ring in the opening part, adjusting screw passes fixed ear.
A method for using a reinforced strip spirally wound polyethylene composite pressure pipe comprises the following steps:
s01, flattening the pipe wall: the inner wall of one port of the reinforced strip spirally wound polyethylene composite pressure pipe is processed, so that the inner wall is smooth, gaps generated after the strip is spirally eliminated, and the welding requirement is met;
s02: inserting a short joint: respectively inserting two polyethylene short sections with heating wires on the outer walls into the two reinforced strip spirally wound polyethylene composite pressure pipes;
s03: fixing the short section: current is introduced to the electric heating wire to fuse the polyethylene short section and the inner wall of the polyethylene composite pressure pipe spirally wound by the reinforcing strip material, and welding is formed after cooling;
s04: connecting a short joint: and welding the two polyethylene short sections into a whole.
As a limitation: and after S01, in order to prevent the inner wall of the polyethylene short section from sinking, a tensioning device is added to the polyethylene short section.
As a limitation: and a heating step between S01 and S02, wherein the reinforcing strip is heated and softened on the inner wall of the polyethylene composite pressure pipe.
As a limitation: in S04, the welding method for welding the two polyethylene short sections together may be hot-melt butt welding or a connection method of an enhanced electric hot-melt tape.
Due to the adoption of the structure, compared with the prior art, the invention has the technical progress that: the invention does not need to wind and seal the outer wall of the composite pressure pipe, greatly reduces the production cost, simultaneously, the connection of the pipe is not influenced by the pipe breakage of the pipe in the construction site, and the inner wall of the pipe is utilized for welding, so the outer wall of the pipe does not need to be specially protected in the transportation process, and the transportation cost is further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the construction of a composite pressure pipe of the present invention.
FIG. 2 is a schematic structural diagram of the polyethylene nipple of the present invention.
FIG. 3 is a schematic structural view of the tightening device of the present invention.
Fig. 4 is a schematic diagram of the thermal roller mechanism for flattening the inner wall of the tube.
FIG. 5 is a flow chart of the steps of the present invention.
In the figure: 1-reinforced vertical ribs, 2-reinforced steel wire meshes, 3-inner and outer layer anticorrosive polyethylene plastics, 4-heating wires, 5-polyethylene short sections, 6-outer steel rings, 7-adjusting screws, 8-fixing lugs, 9-lap joints, 10-pressure rollers, 11-heat insulation layers, 12-fixing shafts, 13-arc heaters, 14-support frames and 15-heat insulation handles.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The invention relates to a reinforced strip spirally wound polyethylene composite pressure pipe, and figure 1 shows the structural form of the reinforced strip spirally wound polyethylene composite pressure pipe, and the reinforced strip spirally wound polyethylene composite pressure pipe is formed by compounding reinforced vertical ribs 1, a reinforced steel wire mesh 2 and inner and outer anticorrosive polyethylene plastics 3. The compound pressure pipe of reinforcing strip spiral winding polyethylene is in-process into the pipe in the strip winding, and the lap joint 9 of spiral can appear, and the height of lap joint 9 department can be higher than other positions simultaneously, has again in the strip production process, because the asymmetry of reinforcing structure and tubular product structure's asymmetry, the corrugated unevenness can appear along the axial in the tubular product inner wall.
In order to solve the problems of uneven inner wall of the pipe and existence of a lap joint 9, the inner wall of the polyethylene composite pressure pipe spirally wound by the reinforcing strip needs to be processed, so that the inner wall is flat, a gap generated after the strip is spirally wound is eliminated, and the welding requirement is met. The flattening of the inner wall of the reinforced strip spirally wound polyethylene composite pressure pipe can be realized in various ways, and the embodiment only exemplifies a method for heating the inner wall of the pipe, and as shown in fig. 4, the heating roller mechanism for flattening the inner wall of the pipe is provided, and the structure consists of a pressure roller 10, an insulating layer 11, a fixed shaft 12, an arc heater 13, a support frame 14 and an insulating handle 15. When the pressure roller is in work, firstly, the circular arc heater 13 is needed to heat the pressure roller 10 for 360 degrees, after the temperature is raised to the melting temperature of polyethylene, the heat insulation handle 15 is operated to tightly press the pressure roller 10 on the inner wall of the end part of the polyethylene composite pressure pipe spirally wound by the reinforcing strip, the inner wall of the pipe is melted by utilizing the high temperature of the pressure roller 10, then the pressure roller 10 rotates along the circumferential direction of the inner wall of the pipe and rotates automatically, the inner wall of the pipe is leveled, and the operation is repeated until the inner wall of the pipe at the welding section of the pressure roller and the polyethylene. The circular motion of the thermal roller mechanism along the inner wall of the pipe can be manual or a special mechanical structure is designed to realize automatic pressing and rotation. The width of the heating roller is slightly larger than the welding width, a certain pressure is applied between the heating roller and the inner wall of the pipe, in order to ensure that the inner wall of the pipe is smooth, the surface temperature of the heating roller needs to be higher than the softening temperature of polyethylene, and meanwhile, the heating roller can repeatedly flatten the inner wall of the pipe.
Fig. 2 is a schematic view of a polyethylene nipple 5 according to the present invention, wherein an electric heating wire 11 is disposed at one end of the polyethylene nipple 5, and after the inner wall of the polyethylene composite pressure pipe spirally wound by the reinforcing strip is flattened, the end of the polyethylene nipple having the electric heating wire disposed therein is inserted into the composite pressure pipe.
In order to strengthen the stability of polyethylene nipple joint and reinforcing band spiral winding polyethylene composite pressure pipe when the welding, in polyethylene nipple joint 5 and composite pressure pipe welding process, because plastics are heated the inflation, can extrude the relatively poor polyethylene nipple joint 5 inner wall of rigidity, make it to the indent, influence welding quality, in order to solve this problem, need carry out rigidity bracing to polyethylene nipple joint 5 inner wall when the welding, avoid polyethylene nipple joint 5 to the indent, before beginning the welding, the welding that shows in figure 3 props up the device and prevents in polyethylene nipple joint 5 inner wall, through rotatory adjusting screw 7, let the distance increase between two fixed ears 8 or reduce and realize the propping tight of outer rigid ring 6 to polyethylene nipple joint 5 welding position.
After the welding of the polyethylene short sections 5 is completed, the connection of the reinforced belt material spiral winding polyethylene composite pressure pipe can be realized only by carrying out hot-melt butt welding or reinforced electric hot-melt belt connection on the end parts of the two polyethylene short sections 5.
The invention is not described in detail and is within the knowledge of a person skilled in the art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a reinforcing strip spiral winding polyethylene composite pressure pipe, its by outer to interior rib, reinforcing steel wire net and the anticorrosive polyethylene plastics of ectonexine of including the reinforcing found, its characterized in that: be equipped with the polyethylene nipple joint of electrified heater wire on compound pressure pipe port inner wall, the heating wire twine in on the outer wall of polyethylene nipple joint, just the heating wire with the inner wall contact of compound pressure pipe.
2. A reinforced tape spiral wound polyethylene composite pressure pipe as claimed in claim 1, wherein: be equipped with in the polyethylene nipple joint and prop tight device, prop tight device and include outer steel ring and adjusting screw, outer steel ring is equipped with the opening, is equipped with two fixed ears that extend to outer steel ring in the opening part, adjusting screw passes fixed ear.
3. A method of joining a reinforced strip spiral wound polyethylene composite pressure pipe as claimed in claim 1, wherein: the connecting method of the reinforced strip spirally wound polyethylene composite pressure pipe comprises the following steps:
s01, flattening the pipe wall: the inner wall of one port of the reinforced strip spirally wound polyethylene composite pressure pipe is processed, so that the inner wall is smooth, gaps generated after the strip is spirally eliminated, and the welding requirement is met;
s02: inserting a short joint: respectively inserting two polyethylene short sections with heating wires on the outer walls into the two reinforced strip spirally wound polyethylene composite pressure pipes;
s03: fixing the short section: current is introduced to the electric heating wire to fuse the polyethylene short section and the inner wall of the polyethylene composite pressure pipe spirally wound by the reinforcing strip material, and welding is formed after cooling;
s04: connecting a short joint: and welding the two polyethylene short sections into a whole.
4. A method of joining a reinforced strip spiral wound polyethylene composite pressure pipe as claimed in claim 3, wherein: and after S01, in order to prevent the inner wall of the polyethylene short section from sinking, a tensioning device is added to the polyethylene short section.
5. A method of joining a reinforced strip spiral wound polyethylene composite pressure pipe as claimed in claim 3, wherein: and a heating step between S01 and S02, wherein the reinforcing strip is heated and softened on the inner wall of the polyethylene composite pressure pipe.
6. A method of joining a reinforced strip spiral wound polyethylene composite pressure pipe as claimed in claim 3, wherein: in S04, the welding method for welding the two polyethylene short sections together may be hot-melt butt welding or a connection method of an enhanced electric hot-melt tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910966801.6A CN110654029A (en) | 2019-10-12 | 2019-10-12 | Reinforced strip spirally-wound polyethylene composite pressure pipe and connecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910966801.6A CN110654029A (en) | 2019-10-12 | 2019-10-12 | Reinforced strip spirally-wound polyethylene composite pressure pipe and connecting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110654029A true CN110654029A (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910966801.6A Pending CN110654029A (en) | 2019-10-12 | 2019-10-12 | Reinforced strip spirally-wound polyethylene composite pressure pipe and connecting method thereof |
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|---|---|
| CN (1) | CN110654029A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19705327A1 (en) * | 1996-02-22 | 1997-11-27 | Fischer Georg Rohrleitung | Joining plastic pipes, e.g. of polyethylene@, by electrothermal welding |
| CN1923495A (en) * | 2006-10-09 | 2007-03-07 | 哈尔滨斯达维机械制造有限公司 | Built-in type hot melt belt connection method of steel plastic composite tube with outer wall possessing vertical reinforcing rib |
| CN202082544U (en) * | 2011-05-06 | 2011-12-21 | 黄山天迈管业有限公司 | Hot melt joint PE plastic steel wound water drainage pipe |
| US20130106099A1 (en) * | 2006-05-24 | 2013-05-02 | Heateflex Corporation | Fusion welding fittings with weld bead cover |
| CN208246143U (en) * | 2018-05-28 | 2018-12-18 | 菏泽市产品检验检测研究院 | A kind of pressure pipeline elbow pipe welding bracket |
| CN109827014A (en) * | 2019-02-28 | 2019-05-31 | 浙江大学 | Carbon fibre reinforced plastic electric melting pipe fittings with strain self-monitoring function |
-
2019
- 2019-10-12 CN CN201910966801.6A patent/CN110654029A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19705327A1 (en) * | 1996-02-22 | 1997-11-27 | Fischer Georg Rohrleitung | Joining plastic pipes, e.g. of polyethylene@, by electrothermal welding |
| US20130106099A1 (en) * | 2006-05-24 | 2013-05-02 | Heateflex Corporation | Fusion welding fittings with weld bead cover |
| CN1923495A (en) * | 2006-10-09 | 2007-03-07 | 哈尔滨斯达维机械制造有限公司 | Built-in type hot melt belt connection method of steel plastic composite tube with outer wall possessing vertical reinforcing rib |
| CN202082544U (en) * | 2011-05-06 | 2011-12-21 | 黄山天迈管业有限公司 | Hot melt joint PE plastic steel wound water drainage pipe |
| CN208246143U (en) * | 2018-05-28 | 2018-12-18 | 菏泽市产品检验检测研究院 | A kind of pressure pipeline elbow pipe welding bracket |
| CN109827014A (en) * | 2019-02-28 | 2019-05-31 | 浙江大学 | Carbon fibre reinforced plastic electric melting pipe fittings with strain self-monitoring function |
Non-Patent Citations (1)
| Title |
|---|
| 申欢迎: "《建筑设备工程安装基本操作技能》", 31 December 2010, 中国矿业大学出版社 * |
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Application publication date: 20200107 |
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