CN113983252A - High-voltage connecting structure for steel wire mesh reinforced composite pipe and manufacturing method thereof - Google Patents

High-voltage connecting structure for steel wire mesh reinforced composite pipe and manufacturing method thereof Download PDF

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Publication number
CN113983252A
CN113983252A CN202111274340.XA CN202111274340A CN113983252A CN 113983252 A CN113983252 A CN 113983252A CN 202111274340 A CN202111274340 A CN 202111274340A CN 113983252 A CN113983252 A CN 113983252A
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China
Prior art keywords
flange
composite pipe
steel wire
concave
joint
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CN202111274340.XA
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Chinese (zh)
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CN113983252B (en
Inventor
冯金茂
陈江慧
霍福磊
刘跃明
褚展鹏
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Linhai Weixing New Building Materials Co Ltd
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Linhai Weixing New Building Materials Co Ltd
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Priority to CN202111274340.XA priority Critical patent/CN113983252B/en
Publication of CN113983252A publication Critical patent/CN113983252A/en
Priority to PCT/CN2022/077383 priority patent/WO2023071000A1/en
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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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F16L23/026—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes by welding
    • 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
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • 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
    • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
    • 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
    • F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
    • 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
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The invention discloses a high-pressure connecting structure for a steel wire mesh reinforced composite pipe and a manufacturing method thereof, wherein the high-pressure connecting structure comprises a first connecting component arranged at the end part of a first composite pipe, a second connecting component arranged at the end part of a second composite pipe and a bolt component fixedly connected between the first connecting component and the second connecting component; the joint of the end parts of the first composite pipe and the second composite pipe is respectively provided with a steel wire layer exposed section, and the first connecting assembly comprises a concave flange arranged on the steel wire layer exposed section of the first composite pipe and a half joint arranged on the outer layer of the first composite pipe; and the second connecting assembly comprises a convex flange arranged on the exposed section of the steel wire layer of the second composite pipe and a half joint arranged on the outer layer of the second composite pipe. The invention has the beneficial effects that: according to the high-pressure connecting structure, the flange is arranged on the steel wire layer, and the flange is locked through the half joint, so that the pressure bearing capacity of the connection is greatly improved compared with the existing connection mode, and the connecting structure is simple in manufacturing process and convenient and fast to construct.

Description

High-voltage connecting structure for steel wire mesh reinforced composite pipe and manufacturing method thereof
Technical Field
The invention relates to the technical field of connection of steel wire mesh reinforced composite pipes, in particular to a high-pressure connection structure for steel wire mesh reinforced composite pipes and a manufacturing method thereof.
Background
The steel wire mesh reinforced composite pipe is a composite pipeline product developed on the basis of a polyethylene pipe, takes a net-shaped framework formed by spirally winding high-strength steel wires left and right as a reinforcing layer, and can be applied to the field of medium-high pressure industry. However, due to the limitation of the pipeline connection technology, the steel wire mesh reinforced composite pipe is mostly applied to the field of low-pressure pipelines. The connection mode of the steel wire mesh framework polyethylene composite pipe is mainly an electric melting connection mode and a metal buckling connection mode, and most of pipeline leakage failure is in the connection position. The composite pipe is different from a solid-wall pipe mainly in that the composite pipe is provided with a steel wire reinforcing layer, the elastic modulus difference between steel wires and plastics is almost 200 times, about 70% of load in the composite pipe is borne by the steel wires, and electric melting connection is only that the outer layer of the composite pipe is connected with pipe fittings, so that plastics are bonded, and the pressure-bearing range is low. The metal buckling connection is reliable in connection strength, but the pipe fitting is high in manufacturing cost, the diameter of the connecting part of the pipeline system can be reduced due to the metal buckling connection, and the drift diameter is reduced, so that the flow of the pipeline system cannot meet the original requirement of the pipeline.
In summary, the steel wire mesh reinforced composite pipe is not effectively connected with steel wires in the pipe material no matter the steel wire mesh reinforced composite pipe is connected with an electric melting pipe fitting or a metal buckling connection, so that the pressure resistance advantage of the composite pipe cannot be exerted.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the high-voltage connecting structure for the steel wire mesh reinforced composite pipe and the manufacturing method thereof, wherein the high-voltage connecting structure is reasonable in design, high in connecting strength, low in cost and convenient and fast in construction and connection.
The technical scheme of the invention is as follows:
a high-pressure connecting structure for a steel wire mesh reinforced composite pipe is characterized by comprising a first connecting component arranged at the end part of a first composite pipe, a second connecting component arranged at the end part of a second composite pipe and a bolt component fixedly connected between the first connecting component and the second connecting component; the first connecting assembly comprises a concave flange arranged on the steel wire layer exposed section of the first composite pipe and a half joint arranged on the outer layer of the first composite pipe; and the second connecting assembly comprises a convex flange arranged on the exposed section of the steel wire layer of the second composite pipe and a half joint arranged on the outer layer of the second composite pipe.
Further, the concave flange includes that first ring flange and first flange connect, first flange connects the setting in a side of first ring flange, the another side of first ring flange is equipped with the annular concave surface, first flange connects and is equipped with first annular near its tip position to form first latch structure at first flange joint tip.
Further, the convex flange includes that second ring flange and second flange connect, the second flange connects and sets up the side at the second ring flange, the another side of second ring flange is equipped with the annular convex surface, be equipped with the second annular on the second flange connects near its tip position to form the second latch structure at second flange joint tip.
Furthermore, the half joint comprises a first half joint body, a second half joint body and a connecting bolt, connecting lugs are respectively arranged at two sides of the first half joint body and the second half joint body, and the first half joint body and the second half joint body are fixedly connected at the connecting lugs through the connecting bolt.
Furthermore, the inner wall of the half joint is provided with a third ring groove close to the port of one end of the inner wall, so that a third latch structure is formed at the end part of the half joint, the third latch structure of the half joint on the first composite pipe is matched and clamped with the first latch structure of the concave flange, and the third latch structure of the half joint on the second composite pipe is matched and clamped with the second latch structure of the convex flange.
Furthermore, a plurality of saw teeth are axially arranged on the inner wall of the half joint.
Further, the bolt assembly comprises a screw, a flat pad, a spring pad and a nut.
Furthermore, a sealing washer is arranged in the annular concave surface of the concave flange, and the annular convex surface of the convex flange corresponds to the annular concave surface of the concave flange in position and is matched with the annular concave surface of the concave flange in size.
Furthermore, the concave flange and the convex flange are respectively connected with the steel wire layer exposed section of the first composite pipe and the steel wire layer exposed section of the second composite pipe in a spot welding mode.
A manufacturing method of a high-pressure connecting structure for a steel wire mesh reinforced composite pipe comprises the following steps:
1) respectively cutting the outer layers of the end parts of the first composite pipe and the second composite pipe by using a peeler to expose a steel wire layer, wherein the exposed length of the steel wire layer is 20-70 mm;
2) respectively placing the concave flange and the convex flange in place, and welding the exposed steel wire layer and the corresponding flange together in a spot welding manner to realize hard connection;
3) placing the two half-sections of the first composite pipe and the second composite pipe in place, respectively clamping the half-sections of the first composite pipe and the half-sections of the second composite pipe into the concave flange and the convex flange, and connecting the two half-sections of the half sections of the half sections of the half sections of the two sections of the half sections of the sections, and the sections of;
4) and placing the sealing washer on the end face of the concave flange, and then screwing the bolt assembly on the concave flange and the convex flange for connection.
The invention has the beneficial effects that: according to the high-pressure connecting structure, the flange is arranged on the steel wire layer, and the flange is locked through the half joint, so that the pressure bearing capacity of the connection is greatly improved compared with the existing connection mode, and the connecting structure is simple in manufacturing process and convenient and fast to construct. The connecting structure of the invention restrains the steel wire well, not only solves the problem of compressive strength, but also does not cause diameter shrinkage.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the half joint of the present invention;
FIG. 4 is a schematic view of a concave flange configuration of the present invention;
FIG. 5 is a schematic view of a raised face flange configuration of the present invention;
in the figure: 1. a first clad pipe; 101. an inner layer; 102. a steel wire layer; 103. an outer layer; 2. a half section; 201. a first half-half-half; 202. a second half-half-half-half; 203. connecting lugs; 204. a third ring groove; 205. saw teeth; 206. a connecting bolt; 3. a concave flange; 301. a first flange plate; 302. a first flange joint; 303. an annular concave surface; 304. a first ring groove; 4. a screw; 5. a sealing gasket; 6. flattening the cushion; 7. a spring pad; 8. a nut; 9. a convex flange; 901. a second flange plate; 902. a second flange joint; 903. an annular convex surface; 904. a second ring groove; 10. a second composite tube.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, a high-pressure connection structure for a steel wire mesh reinforced composite pipe includes a first composite pipe 1, a half-joint 2, a first half-joint 201, a second half-joint 202, a connection lug 203, a third ring groove 204, a sawtooth 205, a connection bolt 206, a concave flange 3, a first flange plate 301, a first flange joint 302, an annular concave surface 303, a first ring groove 304, a screw 4, a sealing washer 5, a flat pad 6, a spring pad 7, a nut 8, a convex flange 9, a second flange plate 901, a second flange joint 902, an annular convex surface 903, a second ring groove 904, and a second composite pipe 10.
Example (b):
the high-pressure connecting structure for the steel wire mesh reinforced composite pipe comprises a first connecting component arranged at the end part of a first composite pipe 1, a second connecting component arranged at the end part of a second composite pipe 10 and a bolt component for fixedly connecting the first connecting component and the second connecting component; the first composite pipe 1 and the second composite pipe 10 are each provided with a three-layer structure including an inner layer 101, a steel wire layer 102, and an outer layer 103.
The end connection parts of the first composite pipe 1 and the second composite pipe 10 are respectively provided with a steel wire layer exposed section (the steel wire layer 102 is exposed outside after the outer layer 103 is removed), and the first connecting component comprises a concave flange 3 arranged on the steel wire layer exposed section of the first composite pipe 1 and a half joint 2 arranged on the outer layer of the first composite pipe 1;
the concave flange 3 comprises a first flange plate 301 and a first flange joint 302, the first flange joint 302 is arranged on one side surface of the first flange plate 301, an annular concave surface 303 is arranged on the other side surface of the first flange plate 301, and a first annular groove 304 is arranged on the first flange joint 302 near the end part of the first flange joint 302, so that a first latch structure is formed at the end part of the first flange joint 302.
The second connecting assembly comprises a convex flange 9 arranged on the exposed section of the steel wire layer of the second composite pipe 10 and a half joint 2 arranged on the outer layer of the second composite pipe 10.
The convex flange 9 comprises a second flange plate 901 and a second flange joint 902, the second flange joint 902 is arranged on one side surface of the second flange plate 901, an annular convex surface 903 is arranged on the other side surface of the second flange plate 901, and a second annular groove 904 is arranged on the second flange joint 902 near the end part of the second flange joint 902, so that a second latch structure is formed at the end part of the second flange joint 902.
The bolt assembly comprises a screw 4, a flat pad 6, a spring pad 7 and a nut 8. The screw 4 penetrates through the through holes corresponding to the concave flange 3 and the convex flange 9 from one end and is screwed and fixed at the other end through the flat gasket 6, the spring gasket 7 and the nut 8; thereby realizing the fixed connection of the concave flange 3 and the convex flange 9.
The half joint 2 comprises a first half joint 201, a second half joint 202 and a connecting bolt 206, connecting lugs 203 are respectively arranged at two sides of the first half joint 201 and the second half joint 202, the first half joint 201 and the second half joint 202 are fixedly connected at the connecting lugs 203 through the connecting bolt 206, and a plurality of saw teeth 205 are axially arranged on the inner wall of the half joint 2. The connecting lug 203 is provided with a bolt hole, and the connecting bolt 206 is used for screwing to enable the saw teeth 205 on the inner wall of the half joint to be embedded into the outer layer of the composite pipe, so that the axial resistance of connection is increased.
A third annular groove 204 is formed in the inner wall of the half joint 2 close to the port of one end of the half joint, so that a third snap tooth structure is formed at the end of the half joint 2. The third latch structure on the half joint 2 is matched with the first latch structure on the concave flange 3 to realize the connection of the half joint 2 and the concave flange 3; and the third latch structure on the half joint 2 is matched with the second latch structure on the convex flange 9, so that the connection between the half joint 2 and the convex flange 9 is realized.
Be equipped with seal ring 5 in the annular concave surface 303 of concave flange 3, the annular convex surface 303 of convex flange 9 corresponds with concave surface 303 position of concave flange 3 annular, and when convex flange 9 and concave flange 3 relative motion under the effect of bolt assembly 5, annular convex surface 303 hugs closely and cooperates in annular concave surface 303 with seal ring 5, realizes end face seal.
The manufacturing method of the high-pressure connecting structure for the steel wire mesh reinforced composite pipe comprises the following specific steps:
1) firstly, peeling the outer layer of the end parts of the first composite pipe and the second composite pipe by using a peeling machine to expose the steel wire layer, wherein the exposed length is 20-70 mm;
2) respectively placing the concave flange and the convex flange in place, and welding the steel wire layer and the flange together in a spot welding manner to realize hard connection;
3) placing two half-half-sections (a first half-section and a second half-section) on a first composite pipe and a second composite pipe in place, clamping the half-sections on the first composite pipe and the second composite pipe into a concave flange and a convex flange (the half-section on the first composite pipe is matched with the concave flange, and the half-section on the second composite pipe is matched with the convex flange), and then screwing a connecting bolt until two end faces of the two half-sections are tightly attached, and sawteeth on the inner wall of the two half-sections are completely embedded into the outer layer of the composite pipe;
4) and placing the sealing washer on the end face of the concave flange, and then screwing the bolt assembly on the concave flange and the convex flange for connection.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims (10)

1.一种钢丝网增强复合管用高压连接结构，其特征在于，包括设置在第一复合管（1）端部的连接组件一、设置在第二复合管（10）端部的连接组件二及用于连接组件一与连接组件二之间固定连接的螺栓组件；所述第一复合管（1）及第二复合管（10）的端部连接处分别设有钢丝层外露段，所述连接组件一包括设置在第一复合管（1）的钢丝层外露段上的凹面法兰（3）及设置在第一复合管（1）的外层上的哈夫节（2）；所述连接组件二包括设置在第二复合管（10）的钢丝层外露段上的凸面法兰（9）及设置在第二复合管（10）的外层上的哈夫节（2）。1. A high-pressure connection structure for a steel wire mesh reinforced composite pipe, characterized in that it comprises a connecting component 1 arranged at the end of the first composite pipe (1), a connecting component 2 arranged at the end of the second composite pipe (10), and A bolt assembly used for the fixed connection between the first and second connecting components; the end joints of the first composite pipe (1) and the second composite pipe (10) are respectively provided with exposed sections of the steel wire layer, and the connection Component 1 includes a concave flange (3) provided on the exposed section of the steel wire layer of the first composite pipe (1) and a Huff section (2) provided on the outer layer of the first composite pipe (1); the connection The second component comprises a raised flange (9) arranged on the exposed section of the steel wire layer of the second composite pipe (10) and a Huff section (2) arranged on the outer layer of the second composite pipe (10). 2.根据权利要求1所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述凹面法兰（3）包括第一法兰盘（301）及第一法兰接头（302），所述第一法兰接头（302）设置在第一法兰盘（301）的一侧面，所述第一法兰盘（301）的另一侧面设有环形凹面（303），所述第一法兰接头（302）上在靠近其端部位置设有第一环槽（304），从而在第一法兰接头（302）端部形成第一卡齿结构。2. A high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 1, wherein the concave flange (3) comprises a first flange plate (301) and a first flange joint (302) , the first flange joint (302) is arranged on one side of the first flange (301), the other side of the first flange (301) is provided with an annular concave surface (303), the A flange joint (302) is provided with a first annular groove (304) at a position close to its end, so that a first locking tooth structure is formed at the end of the first flange joint (302). 3.根据权利要求2所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述凸面法兰（9）包括第二法兰盘（901）及第二法兰接头（902），所述第二法兰接头（902）设置在第二法兰盘（901）的一侧面，所述第二法兰盘（901）的另一侧面设有环形凸面（903），所述第二法兰接头（902）上在靠近其端部位置设有第二环槽（904），从而在第二法兰接头（902）端部形成第二卡齿结构。3. A high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 2, characterized in that the raised flange (9) comprises a second flange plate (901) and a second flange joint (902) , the second flange joint (902) is arranged on one side of the second flange (901), the other side of the second flange (901) is provided with an annular convex surface (903), the The second flange joint (902) is provided with a second ring groove (904) at a position close to its end, so that a second locking tooth structure is formed at the end of the second flange joint (902). 4.根据权利要求1所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述哈夫节（2）包括第一哈夫节半体（201）、第二哈夫节半体（202）及连接螺栓（206），所述第一哈夫节半体（201）及第二哈夫节半体（202）的两侧位置分别设有连接耳（203），所述第一哈夫节半体（201）及第二哈夫节半体（202）在连接耳（203）处通过连接螺栓（206）固定连接。The high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 1, characterized in that, the half-section (2) comprises a first half-section (201), a second half-section body (202) and connecting bolts (206), connecting ears (203) are respectively provided on both sides of the first half body (201) and the second half body (202). The first half-body (201) and the second half-body (202) are fixedly connected by connecting bolts (206) at the connecting ears (203). 5.根据权利要求3所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述哈夫节（2）的内壁靠近其一端端口位置处设有第三环槽（204），从而在哈夫节（2）端部形成第三卡齿结构，所述第一复合管（1）上的哈夫节（2）的第三卡齿结构与凹面法兰（3）的第一卡齿结构配合卡接，第二复合管（10）上的哈夫节（2）的第三卡齿结构与凸面法兰（9）的第二卡齿结构配合卡接。5. A high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 3, characterized in that, a third annular groove (204) is provided on the inner wall of the Huff section (2) near one end port thereof, Thus, a third tooth structure is formed at the end of the half joint (2), and the third tooth structure of the half joint (2) on the first composite pipe (1) and the first tooth structure of the concave flange (3) The clamping tooth structure is matched for clamping connection, and the third clamping tooth structure of the Huff section (2) on the second composite pipe (10) is matched and clamped with the second clamping tooth structure of the convex flange (9). 6.根据权利要求5所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述哈夫节（2）的内壁上沿轴向设置若干道锯齿（205）。6 . The high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 5 , wherein a plurality of saw teeth ( 205 ) are arranged on the inner wall of the Huff section ( 2 ) along the axial direction. 7 . 7.根据权利要求1所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述螺栓组件包括螺钉（4）、平垫（6）、弹簧垫（7）及螺母（8）。7. A high-voltage connection structure for a steel mesh reinforced composite pipe according to claim 1, wherein the bolt assembly comprises a screw (4), a flat washer (6), a spring washer (7) and a nut (8) . 8.根据权利要求3所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述凹面法兰（3）的环形凹面（303）内设有密封垫圈（5），所述凸面法兰（9）的环形凸面（903）与凹面法兰（3）环形凹面（303）位置相对应，尺寸相配合。8. A high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 3, characterized in that, a sealing gasket (5) is provided in the annular concave surface (303) of the concave flange (3), and the convex surface is provided with a sealing gasket (5). The annular convex surface (903) of the flange (9) corresponds to the annular concave surface (303) of the concave flange (3) in position, and the dimensions are matched. 9.根据权利要求1所述的一种钢丝网增强复合管用高压连接结构，其特征在于，所述凹面法兰（3）、凸面法兰（9）分别与第一复合管（1）的钢丝层外露段、第二复合管（10）的钢丝层外露段点焊连接。9 . The high-pressure connection structure for a steel mesh reinforced composite pipe according to claim 1 , wherein the concave flange ( 3 ) and the convex flange ( 9 ) are respectively connected with the steel wire of the first composite pipe ( 1 ). 10 . The exposed section of the layer and the exposed section of the steel wire layer of the second composite pipe (10) are connected by spot welding. 10.根据权利要求1-9任一所述的一种钢丝网增强复合管用高压连接结构的制造方法，其特征在于，包括如下步骤：10. The method for manufacturing a high-voltage connection structure for a steel mesh reinforced composite pipe according to any one of claims 1-9, wherein the method comprises the following steps: 1）将第一复合管和第二复合管端部分别用削皮机削去外层，露出钢丝层，钢丝层外露长度为20-70mm；1) Use a peeler to peel off the outer layers of the ends of the first composite pipe and the second composite pipe respectively to expose the steel wire layer, and the exposed length of the steel wire layer is 20-70mm; 2）将凹面法兰和凸面法兰分别放置到位，采用点焊的方式，将外露的钢丝层与对应法兰焊接在一起，实现硬连接；2) Put the concave flange and the convex flange in place respectively, and weld the exposed steel wire layer and the corresponding flange together by spot welding to realize a hard connection; 3）将第一复合管和二复合管上的两瓣哈夫节半体放置到位，将第一复合管的哈夫节、第二复合管上的哈夫节分别卡入凹面法兰、凸面法兰中，通过连接螺栓连接两瓣哈夫节半体，直至两瓣哈夫节半体两端面贴紧，内壁锯齿完全嵌入复合管外层；3) Put the two halves on the first composite tube and the second composite tube in place, and snap the first composite tube and the second composite tube into the concave flange and the convex surface respectively. In the flange, the two halves are connected by connecting bolts until both ends of the two halves are close to each other, and the inner serrations are completely embedded in the outer layer of the composite pipe; 4）将密封垫圈放置于凹面法兰端面，然后拧紧凹凸面法兰上的螺栓组件连接即可。4) Place the sealing washer on the end face of the concave flange, and then tighten the bolt assembly on the concave flange to connect.
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