CN113669515B - Multilayer reinforced dredging pipe and forming process thereof - Google Patents
Multilayer reinforced dredging pipe and forming process thereof Download PDFInfo
- Publication number
- CN113669515B CN113669515B CN202110953171.6A CN202110953171A CN113669515B CN 113669515 B CN113669515 B CN 113669515B CN 202110953171 A CN202110953171 A CN 202110953171A CN 113669515 B CN113669515 B CN 113669515B
- Authority
- CN
- China
- Prior art keywords
- layer
- steel wire
- winding
- pipe
- reinforced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
Abstract
The invention relates to the technical field of dredging engineering pipelines, in particular to a multilayer reinforced dredging pipe and a forming process thereof. The forming step comprises the steps of preparing a mould, laying each functional layer, vulcanizing and forming and demoulding. Compared with the prior art, the invention has the beneficial effects that: 1) the rubber polymer material is combined with the wound steel wire reinforcement layer, so that the steel wire is fixed on one hand, and the damage of the steel wire to the pipe body after the pipe body is deformed can be avoided on the other hand; 2) the functional layers of various different mechanical structures are firmly connected into a whole, so that the steel wire of the pipe body can be effectively prevented from being peeled off under the long-term stretching, bending and twisting actions, and the problem that the pipe body of the dredging pipe is continuously subjected to fatigue damage under the severe environment is solved.
Description
Technical Field
The invention relates to the technical field of dredging engineering pipelines, in particular to a multilayer reinforced dredging pipe and a forming process thereof.
Background
The dredging pipe processed and molded by utilizing the high polymer material has higher wear resistance, corrosion resistance and low flow resistance, can effectively reduce the influence caused by large conveying pressure and high flow velocity in the dredging process, and can simultaneously reduce the damage caused by a large amount of gravels, coral reefs, coarse sand, hard clay and the like contained in the dredging soil.
The utility model discloses a pipeline is dredged to ultra high molecular weight polyethylene diaphragm with application number 201220255889.4, including inner tube, winding steel wire, copolymer primer layer, protective layer and hoop, the inner tube is formed for the heat seal of 2-3 layers of ultra high molecular weight polyethylene diaphragm, and the tensile strength of diaphragm is greater than 200 MPa. The high-pressure-bearing energy-saving fluid conveying device is strong in pressure-bearing capacity, light in weight, convenient to transport and install, smooth in pipe wall, capable of reducing flow resistance and fluid conveying energy, energy-saving and environment-friendly.
The chinese patent with application number 201710986418.8 discloses a dredging pipe and a processing method thereof, the processing method of the dredging pipe comprises the following steps: s100, welding a steel wire mesh on the inner wall of the metal base pipe; s200, centrifugally spraying adhesive glue on the steel wire mesh, wherein the adhesive glue of the adhesive glue is completely contained and compounded on the steel wire mesh to form a steel wire mesh adhesive layer; s300, centrifugally spraying a high-molecular wear-resistant layer on the steel mesh glue layer; s400, curing the sprayed high-molecular wear-resistant layer at normal temperature to enable the high-molecular wear-resistant layer and the steel mesh glue layer to be cured on the metal base pipe together. The steel mesh glue layer includes wire net and adhesive, and the wire net passes through welding and metal base pipe connection, adds adhesive in the wire net simultaneously, and the mucilage glue contains completely compound in the wire net, and the steel mesh glue layer solidifies as an organic wholely with the polymer wearing layer in addition, realizes three layer construction's the formula of containing complex, makes polymer wearing layer and metal base pipe can firmly combine, can solve the problem of dredging the easy separation of intraductal polymer wearing layer and metal base pipe in the pipe, avoids dredging the pipe inefficacy and scrapping.
Because the working environment of the dredging pipe is very harsh, the pipe body is continuously stretched, bent and twisted under the action of severe hydraulic force such as continuous shaking, sinking and floating, collision and the like, and the steel wire mesh and the polymer layer in the prior art can not keep good bonding strength, and finally the steel wire mesh and the polymer layer are damaged by fatigue.
Disclosure of Invention
The invention aims to provide a multilayer reinforced dredging pipe and a forming process thereof, which overcome the defects of the prior art, adopt the combination of rubber high polymer materials and a steel wire reinforced layer of a winding structure, fill trapezoidal rubber in steel wire gaps to fix steel wires, firmly connect functional layers of various different mechanical structures into a whole by a pipe body, improve the integral deformation resistance, avoid the stripping phenomenon of the steel wires under the long-term stretching, bending and twisting actions of the pipe body, and prolong the service life of the pipe body.
In order to solve the problems, the invention adopts the following technical scheme:
one of the technical schemes is as follows: the multi-layer reinforced dredging pipe comprises a pipe body and flanges positioned at two ends of the pipe body, and is characterized in that the pipe body sequentially comprises a wear-resistant macromolecule layer, a warning macromolecule layer, a first composite reinforcing layer, a steel wire filling layer, a second composite reinforcing layer and an external application macromolecule layer from inside to outside, wherein the thickness of the wear-resistant macromolecule layer is 30-70 mm, the thickness of the warning macromolecule layer is 3-15 mm, the thickness of the first composite reinforcing layer is 15-40 mm, the thickness of the steel wire reinforcing layer is 3-7 mm, the thickness of the steel wire filling layer is 5-10 mm, the thickness of the second composite reinforcing layer is 10-20 mm, the thickness of the external application macromolecule layer is 2-4 mm, the inner diameter of the pipe body is 500-1000 mm, and the length of the pipe body is 10000-13000 mm.
The first composite reinforced layer and the second composite reinforced layer are respectively formed by winding a reinforced film which is prepared by mixing any one or more of cord fabric, nylon screen cloth, silk thread, nylon rope or polyester fiber with any one of nitrile rubber, styrene butadiene rubber or natural rubber, the thickness of each layer of reinforced film is 1-2.5 mm, each layer of reinforced film is wound in a cross way, and the winding angle is 30-70 degrees.
The wear-resistant polymer layer is any one of nitrile rubber, styrene butadiene rubber, ethylene propylene diene monomer or natural rubber.
The warning polymer layer is composed of wear-resistant polymer layers with at least two colors.
Any one of a steel wire, a steel wire or a steel rope is wound in the steel wire reinforcing layer to serve as a reinforcing body, the diameter of the reinforcing body is 1-9 mm, and the winding distance is 1-7 mm.
The second technical proposal is that: a forming process of a multilayer reinforced dredging pipe is characterized by comprising main pipe mould preparation, functional layer laying, vulcanization forming and demoulding, and specifically comprises the following steps:
1) preparing a main pipeline mould, and treating, positioning and matching flange barrels, wherein the preparation of the main pipeline mould comprises winding a PP film on the mould, and coating, brushing, painting or smearing demoulding silicone oil; the treatment process of the flange cylinder comprises sand blasting, coating, brushing, painting or glue smearing of the flange cylinder, and rubber is wound or adhered at the end part of the flange cylinder;
2) laying all functional layers, sequentially filling or winding a wear-resistant polymer layer and a warning polymer layer on a main pipeline mould between two flange cylinders, and pressurizing and shaping by using a pressurizing material in a winding or binding mode; filling or winding high polymer materials on the outer surface of the flange cylinder and two sides of the flange cylinder hoop, and pressurizing and shaping; winding or binding a first composite reinforcing layer on the outer surface of the main pipeline mould and the flange cylinder, and pressurizing and shaping; winding or binding a steel wire reinforcing layer on the pipeline main body from one end to the other end, and laying a steel wire filling layer on the outer surface of the steel wire reinforcing layer; winding or binding a second composite reinforcing layer on the outer surface of the main pipeline mould and the flange cylinder, and pressurizing and shaping; filling or winding the whole tube with a polymer layer, and pressurizing and shaping;
3) vulcanizing, namely treating the whole pipe by using a continuous vulcanization method until the pipe is molded, wherein the vulcanization temperature is 90-150 ℃, and the vulcanization time is 300-900 min;
4) and (4) demolding, taking down the pipe body from the main pipe mold, and repeatedly using the main pipe mold.
Before the polymer layer is laid and applied externally in the step 2), the steel wire at the end part of the flange and the second composite reinforcing layer need to be subjected to shape modification treatment, and redundant parts are filled or removed, so that the perimeter size deviation of the steel wire and the second composite reinforcing layer meets the design requirement.
The pressure setting in the step 2) is to wind or bind any one of cord fabric, nylon cloth, nylon threads or nylon ropes, wherein the winding tension is 5-50 MPa, the pressure setting time is 5-60min, and then the cord fabric is detached.
The bonding strength between the polymer material in the steel wire reinforced layer and the flange cylinder after vulcanization in the step 3) is not lower than 3N/mm.
Compared with the prior art, the invention has the beneficial effects that: 1) the rubber polymer material is combined with the wound steel wire reinforcement layer, and trapezoidal rubber is filled in the steel wire gaps, so that the steel wire is fixed on one hand, and the damage of the steel wire to the steel wire body after the steel wire body deforms can be avoided on the other hand; 2) the pipe body is firmly connected into a whole by the functional layers of various different mechanical structures, and the binding force is strong, so that the integral deformation resistance of the pipe body is improved, the stripping phenomenon of steel wires under the long-term stretching, bending and twisting actions of the pipe body can be effectively avoided, the influence of fatigue damage is reduced, and the service life of the pipe body is prolonged.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic view of a layer structure of a pipe body according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the installation of a main pipe mold before molding in embodiment 1 of the present invention;
FIG. 4 is a flow chart of the molding process of example 1 of the present invention.
In the figure: 1-wear-resistant polymer layer, 2-warning polymer layer, 3-first composite reinforcing layer, 4-steel wire reinforcing layer, 5-steel wire filling layer, 6-second composite reinforcing layer, 7-external application polymer layer, 8-pipe body, 9-flange, 10-main pipe mould, 11-flange cylinder and 12-flange hoop.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1
Referring to fig. 1 and fig. 2, which are schematic structural diagrams of an embodiment 1 of the multi-layer reinforced dredging pipe of the present invention, a pipe body 8 and flanges 9 located at two ends of the pipe body are sequentially provided, from inside to outside, with a wear-resistant polymer layer 1, a warning polymer layer 2, a first composite reinforcing layer 3, a steel wire reinforcing layer 4, a steel wire filling layer 5, a second composite reinforcing layer 6 and an externally applied polymer layer 7, wherein the thickness of the wear-resistant polymer layer 1 is 40mm, the thickness of the warning polymer layer 2 is 12mm, the thickness of the first composite reinforcing layer 3 is 15mm, the thickness of the steel wire reinforcing layer 4 is 6mm, the thickness of the steel wire filling layer 5 is 6mm, the thickness of the second composite reinforcing layer 6 is 15mm, and the thickness of the externally applied polymer layer 7 is 3 mm.
In example 1, the first composite reinforcing layer and the second composite reinforcing layer were formed by winding a reinforcing rubber sheet prepared by mixing a mesh fabric and a nitrile rubber layer. The wear-resistant polymer layer is a butadiene-acrylonitrile rubber layer. The steel wire reinforcing layer 5 is wound with steel wires.
Referring to fig. 3-4, the forming process of the multilayer reinforced dredging pipe of the invention comprises the steps of main pipe mould preparation, functional layer laying, vulcanization forming and demoulding, and takes the manufacture of a pipe body with the inner diameter of 800mm and the length of 11700mm as an example, and comprises the following specific steps:
1) preparing a main pipeline mould, and treating, positioning and matching flange barrels, wherein the treatment process of the main pipeline mould 10 comprises sand blasting, coating, brushing, painting or glue smearing liquid and high polymer material edge covering. Carrying out sand blasting treatment on the outer surface and the inner surface edges of the flange cylinder 11 to enable the grade of the flange cylinder to reach Sa2 grade; coating glue solution on the surface of the flange cylinder after sand blasting; and after the pipe is air-dried, wrapping and winding nitrile rubber, and then sleeving two flange barrels 11 at two ends of the main pipe mould, wherein the distance between the outer edges of the flanges at the two ends is 11700 mm.
2) Laying all functional layers, winding the wear-resistant high polymer layer 1 of the wear-resistant nitrile rubber between the paired flanges for multiple times, wherein the total thickness of the wound wear-resistant nitrile rubber is 40 mm; then winding a warning macromolecule layer 2, and respectively winding yellow nitrile rubber and red nitrile rubber, wherein the thickness of each layer is 6 mm; then winding a clean cloth strip with certain strength to pressurize and shape the pipe body, wherein the winding tension is 20MPa, the circumference of the pipe body is measured to be 2851mm after winding the pressurized cloth strip, and removing the cloth strip after winding for 10 min; winding nitrile rubber on the outer surface of the flange 9 and two sides of the flange hoop 12, then winding clean cloth strips with certain strength to pressurize and shape the pipe body, and removing the cloth strips after winding for 10 min; winding a reinforcing rubber sheet prepared by mixing screen cloth and nitrile rubber on the outer surfaces of the pipe body and the flange, wherein the thickness of the reinforcing rubber sheet is 1.5mm, the winding angle is 50 degrees, the total thickness of the wound first composite reinforcing layer 3 is 15mm, winding a clean cloth strip with certain strength to perform pressure shaping on the pipe body, and removing the cloth strip after winding for 10 min; steel wires with the diameter of 4mm are wound on the outer pipeline body of the strengthening layer from one end flange barrel to the other end flange barrel, the winding distance is 5mm, and trapezoidal rubber is filled in gaps of the steel wires to form a steel wire filling layer 5; winding a second composite reinforcing layer 6 which is formed by mixing screen cloth and nitrile rubber on the outer surfaces of the pipe body and the flange, wherein the thickness of the second composite reinforcing layer is 1.5mm, the winding angle is 50 degrees, the total thickness after winding is 15mm, winding a clean cloth strip with certain strength to perform pressure setting on the pipe body, the winding tension is 20MPa, and removing the cloth strip after winding for 10 min; welding a steel wire of the flange to the flange cylinder, cutting the reinforcing layer, and continuously filling rubber at the position lacking rubber; and winding a neoprene externally-coated high polymer layer 7 outside the whole pipe, winding a clean cloth strip with certain strength to pressurize and shape the pipe body, and measuring the circumferences of three positions of the pipe body after shaping, wherein the average value of the circumferences is 3130 mm.
3) And (3) vulcanizing, namely, continuously vulcanizing the whole pipe until the pipe is molded, and finally vulcanizing the whole pipe at the vulcanizing temperature of 110 ℃ for 600 min. The bonding strength between the polymer material in the steel wire reinforced layer and the steel wire after vulcanization is not lower than 3N/mm.
4) And (4) demolding, namely taking the pipe body down from the main pipe mold, and repeatedly using the main pipe mold.
Examples 2 to 4
The multi-layer reinforced dredging pipe of examples 2-4 was formed in the same manner as in example 1, wherein the dimensional parameters of the functional layers are shown in Table 1 below, and the forming process parameters are shown in Table 2 below.
TABLE 1
TABLE 2
Therefore, in the above embodiment of the invention, by adopting the structural form of combining the rubber polymer material and the wound steel wire reinforcement layer, and filling the trapezoidal rubber in the steel wire gap, on one hand, the steel wire is fixed, on the other hand, the damage of the steel wire to the pipe body after the pipe body is deformed can be avoided, and the problem that the pipe body of the dredging pipe is continuously subjected to fatigue damage in a severe environment is solved. Meanwhile, the functional layers of various different mechanical structures are firmly connected into a whole, and the binding force is obviously enhanced, so that the integral deformation resistance of the pipe body is improved, and the service life of the pipe body can be prolonged to 3 years from 6 months originally.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention.
Claims (3)
1. A forming process of a multilayer reinforced dredging pipe comprises main pipe mould preparation, functional layer laying, vulcanization forming and demoulding, and specifically comprises the following steps:
1) preparing a main pipeline mould, and treating, positioning and matching flange barrels, wherein the preparation of the main pipeline mould comprises winding a PP film on the mould, and coating, brushing, painting or smearing demoulding silicone oil; the treatment process of the flange cylinder comprises sand blasting, coating, brushing, painting or glue smearing of the flange cylinder, and rubber is wound or adhered at the end part of the flange cylinder;
2) laying all functional layers, sequentially filling or winding a wear-resistant polymer layer and a warning polymer layer on a main pipeline mould between two flange cylinders, and pressurizing and shaping by using a pressurizing material in a winding or binding mode; filling or winding high polymer materials on the outer surface of the flange cylinder and two sides of the flange cylinder hoop, and pressurizing and shaping; winding a first composite reinforcing layer on the outer surfaces of the main pipeline mould and the flange cylinder, and performing pressure forming; winding a steel wire reinforcing layer on the pipeline main body from one end to the other end, and laying a steel wire filling layer on the outer surface of the steel wire reinforcing layer; winding a second composite reinforcing layer on the outer surface of the main pipeline mold and the flange cylinder, and performing pressurization and shaping; filling or winding the whole tube with a polymer layer, and pressurizing and shaping; before the polymer layer is laid and applied externally, the steel wire at the end part of the flange and the second composite reinforcing layer need to be subjected to shape modification treatment, and redundant parts are filled or removed, so that the perimeter size deviation of the steel wire and the second composite reinforcing layer meets the design requirement; the pressure shaping is to wind or bind any one of cord fabric, nylon cloth, nylon threads or nylon ropes, the winding tension is 5-50 MPa, the pressure shaping time is 5-60min, and then the product is removed;
3) vulcanizing, namely treating the whole pipe by using a continuous vulcanization method until the whole pipe is molded, wherein the vulcanization temperature is 90-150 ℃, and the vulcanization time is 300-900 min; the bonding strength between the polymer material in the steel wire reinforced layer and the flange cylinder after vulcanization is not lower than 3N/mm;
4) demolding, namely taking the pipe body off the main pipe mold, and reusing the main pipe mold;
the pipe body of the whole pipe is sequentially provided with a wear-resistant macromolecule layer, a warning macromolecule layer, a first composite strengthening layer, a steel wire filling layer, a second composite strengthening layer and an external high molecule layer from inside to outside, wherein the thickness of the wear-resistant macromolecule layer is 30-70 mm, the thickness of the warning macromolecule layer is 3-15 mm, the thickness of the first composite strengthening layer is 15-40 mm, the thickness of the steel wire strengthening layer is 3-7 mm, the thickness of the steel wire filling layer is 5-10 mm, the thickness of the second composite strengthening layer is 10-20 mm, the thickness of the external high molecule layer is 2-4 mm, the inner diameter of the pipe body is 500-1000 mm, and the length of the pipe body is 10000-13000 mm;
the first composite reinforced layer and the second composite reinforced layer are respectively formed by winding a reinforced film which is prepared by mixing any one or more of cord fabric, nylon screen cloth, silk thread, nylon rope or polyester fiber with any one of nitrile rubber, styrene butadiene rubber or natural rubber, wherein the thickness of each layer of reinforced film is 1-2.5 mm, each layer of reinforced film is wound in a cross way, and the winding angle is 30-70 degrees;
the warning polymer layer is composed of wear-resistant polymer layers with at least two colors.
2. The process of claim 1, wherein the wear-resistant polymer layer is one of nitrile rubber, styrene-butadiene rubber, ethylene-propylene-diene monomer rubber, and natural rubber.
3. The forming process of the multi-layer reinforced dredging pipe according to claim 1, wherein any one of steel wires, steel wires or steel ropes is wound in the steel wire reinforced layer to serve as a reinforcement, the diameter of the reinforcement is 1-9 mm, and the winding distance is 1-7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953171.6A CN113669515B (en) | 2021-08-19 | 2021-08-19 | Multilayer reinforced dredging pipe and forming process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953171.6A CN113669515B (en) | 2021-08-19 | 2021-08-19 | Multilayer reinforced dredging pipe and forming process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113669515A CN113669515A (en) | 2021-11-19 |
| CN113669515B true CN113669515B (en) | 2022-08-26 |
Family
ID=78543939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110953171.6A Active CN113669515B (en) | 2021-08-19 | 2021-08-19 | Multilayer reinforced dredging pipe and forming process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113669515B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5533098Y2 (en) * | 1976-09-25 | 1980-08-06 | ||
| CN101387360B (en) * | 2008-10-07 | 2011-05-18 | 宁波大洋实业发展有限公司 | Large caliber rubber positive and negative flexible pipe of shield machine |
| WO2010110941A1 (en) * | 2009-03-27 | 2010-09-30 | Parker-Hannifin Corporation | Compact high pressure rubber hose |
| CN201964052U (en) * | 2011-01-07 | 2011-09-07 | 江苏太平橡胶股份有限公司 | Rubber hose for transporting sea sand |
| CN202392309U (en) * | 2011-12-14 | 2012-08-22 | 中橡集团沈阳橡胶研究设计院 | Special rubber corrugated pipe for ship diesel engine |
| CN209067975U (en) * | 2018-06-19 | 2019-07-05 | 河北西伯力特种橡胶有限公司 | The electro-hydraulic long-range feed flow super-pressure flexible pipe of control of high-wear-resistance mining heavy caliber |
| US10994521B2 (en) * | 2018-08-02 | 2021-05-04 | Gates Corporation | Rubber product with wear indicating layers |
| CN112984230A (en) * | 2019-12-02 | 2021-06-18 | 湖南诚路管业科技有限公司 | Plastic pipe convenient to replace and with abrasion prompt function |
-
2021
- 2021-08-19 CN CN202110953171.6A patent/CN113669515B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113669515A (en) | 2021-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103228972B (en) | Improved reinforcement stack | |
| CN103072284A (en) | Reinforcing ribs contained sandwich structure composite material and its making method | |
| CN204852660U (en) | Compound pipe of fiber crops winding | |
| CN113669516B (en) | Multilayer reinforced dredging pipe with floating layer and forming process thereof | |
| CN1666924A (en) | Air bag with high intensity and its manufacturing technique | |
| CN113669515B (en) | Multilayer reinforced dredging pipe and forming process thereof | |
| CN102537534B (en) | Large-caliber high-pressure non-metallic composite pipe and manufacturing method thereof | |
| CN108276837A (en) | Anti-adhesion conveyor belt and preparation method thereof with ultra high molecular polyethylene coating | |
| CN1286704C (en) | Frame carried FRP transport tank and producing method thereof | |
| GB2453845A (en) | High-pressure rubber hose and method and apparatus for producing the same | |
| CN111140697B (en) | Symmetrical double-arc elastic cabin penetrating piece and manufacturing method | |
| CN1285484C (en) | Aerated rubber ball for ship and its production technology | |
| CN218294773U (en) | Self-floating rubber pipe externally coated with ultra-high molecular PE (polyethylene) for dredging | |
| CN210712729U (en) | Long-life high-pressure water shutoff rubber air bag | |
| CN109027446B (en) | Hot-melt winding corrugated pipe of thermoplastic continuous fiber prepreg braided rope and manufacturing equipment thereof | |
| CN201473986U (en) | Climbing transition rubber sludge pipe | |
| CN201284885Y (en) | Compound epoxy resin cable bridge rack | |
| CN210007284U (en) | Cable protection pipe for power made of composite materials | |
| KR101246463B1 (en) | Method for producing hose | |
| CN207073669U (en) | Glass reinforced plastic pipe joint and submarine laying pipeline | |
| CN2750981Y (en) | High strength gasbag for ship | |
| CN111457169A (en) | Spiral winding rain sewage pipe of thermoplastic continuous fiber prepreg tape board and manufacturing method thereof | |
| CN103267180B (en) | Elastomer composite self-floating rubber tube and manufacturing technique thereof | |
| JPS58689A (en) | Composite pipe | |
| CN211830029U (en) | Steel band bellows for municipal administration threading |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |