WO2011110093A1

WO2011110093A1 - Plastic-steel wound pipe tee coupling and manufacturing method thereof

Info

Publication number: WO2011110093A1
Application number: PCT/CN2011/071664
Authority: WO
Inventors: 郑能欢; 董勉励; 肖日君
Original assignee: 华瀚科技有限公司
Priority date: 2010-03-10
Filing date: 2011-03-10
Publication date: 2011-09-15
Also published as: CN101793337A; CN101793337B

Abstract

A plastic-steel wound pipe tee coupling (2) and a manufacturing method thereof are disclosed. The plastic-steel wound pipe tee coupling (2) comprises a plastic-steel wound main pipe (21), a branch pipe (23) and a connecting member (22c). The end part of the plastic pipe (23a) of the branch pipe is connected with the side wall of the plastic pipe (21a) of the main pipe, the axis of the branch pipe (23) is arranged in the transverse direction of the axis of the main pipe (21), the wound steel band (23b) of the branch pipe continues along the spiral line, and the end part of the wound steel band (21b) of the main pipe, which is truncated by the outer wall of the plastic pipe (23a) of the branch pipe, is attached to the outer wall of the plastic pipe (23a) of the branch pipe. One side of the connecting member (22c) is attached to the outer wall of the plastic pipe (23a) of the branch pipe, the first end of the connecting member (22c) is connected with the truncated wound steel band (21b) of the main pipe, the second end of the connecting member (22c) is connected with the adjacent wound steel band (23b) of the branch pipe along the vertical direction of the truncated wound steel band (21b) of the main pipe, and the truncated wound steel band (21b) of the main pipe adjoining the wound steel band (23b) of the adjacent branch pipe is directly connected with the wound steel band (23b) of the adjacent branch pipe. The manufacture method for the plastic-steel wound pipe tee coupling (2) comprises the following steps: preparing materials, setting points, drawing lines, cutting, pre-treating, connecting the steel bands, connecting the plastics and conducting a water-closed test. The present invention solves the structural and manufacturing problems of the plastic-steel wound pipe tee coupling (2), enables the structure of the plastic-steel wound pipe tee coupling (2) to meet the operation intensity and the rigidity requirements.

Description

Plastic steel winding pipe tee and manufacturing method thereof

[0001] The present invention relates to a steel-plastic wound pipe component, and to a method of manufacturing the same, and more particularly to a steel-steel-wound pipe tee and a method of manufacturing the same. Background technique

[0002] Buried drain pipes and buried cable protection pipes for electric power and communication, especially large-diameter buried pipes, because the pipe wall needs to withstand soil pressure, the pipe wall is required to have a high pressure bearing capacity, and the pipe wall must be With a large thickness, in order to ensure that the pipe wall meets the requirements of the buried pressure bearing capacity, at the same time reduce the wall thickness and reduce the pipe manufacturing cost, a plastic steel spiral wound pipe appears. For example, Chinese patent 200520112528. 4, which is filed on July 4, 2005, discloses a plastic steel wound structural wall pipe. As shown in Fig. 1, the pipe 1 is composed of a closed smooth fluid passage formed by the inner wall l1, and the outer surface of the pipe wall is a spiral-wrapped steel belt reinforced solid straight rib structure lb. By providing a steel strip reinforcing rib lb, the pipe wall is lowered. At the same time of thickness, the compressive strength of the pipe wall and the rigidity of the pipe ring are greatly improved, the pressure bearing capacity of the pipe body is improved, and the manufacturing cost of the winding pipe is reduced.

[0003] In actual use, according to the requirements of the pipeline arrangement, it is often necessary to connect the branch pipe of the pipe to the main pipe, and the pipe three-way structure is required at the pipe joint connection, and the special reinforcing rib structure of the winding pipe makes the three-way structure It is much more complicated than the three-way structure of ordinary pipes. Due to the large stress concentration at the joint between the branch pipe and the main pipe, it is a weak link in the pipe tee structure. The structure is often due to stress concentration, and the cracking failure first occurs in use. Therefore, how to make the branch pipe and the main pipe joint structure Strengthening, meeting the strength and requirements of steel strips has become an important part of ensuring the reliable operation of the coiled pipe system.

[0004] Since the winding pipe tee structure is complicated and the manufacturing process is difficult, so far, a pipe tee using a wound pipe structure has not appeared. Summary of the invention

[0005] One of the technical problems to be solved by the present invention is to provide a steel-steel winding tube tee, which solves the shortcomings of the prior art:

[0006] The second technical problem to be solved by the present invention is to provide a three-way manufacturing method of a plastic steel coiled pipe, which solves the problem that the prior art cannot manufacture the wound pipe tee.

[0007] The technical solution for solving one of the technical problems of the present invention is: constructing a steel-steel winding pipe tee, comprising a steel-steel winding main pipe and a steel-steel winding branch pipe provided with a spirally wound steel strip on the outer wall of the plastic pipe, characterized in that The plastic tube end of the branch pipe is connected to the sidewall of the plastic tube of the main pipe, and the branch pipe axis is located in a lateral direction of the main axis;

[0008] the spirally wound steel strip of the branch pipe is continuous along a spiral line;

[0009] the end of the main winding steel strip which is cut off by the outer wall of the plastic pipe of the branch pipe is attached to the outer wall of the plastic pipe of the branch pipe;

[0010] comprising a connecting member, one side of the connecting member is attached to the outer wall of the plastic pipe of the branch pipe, the first end is connected with the wound steel strip with the main pipe being cut off, and the second end is wound with the steel strip being cut along the main pipe An upright direction connecting the wound steel strips of the adjacent branch pipes; [001 1] The truncated wound steel strip adjoining the wound steel strip of the adjacent branch pipe is directly connected to the adjacent branch pipe wound steel strip.

[0012] In the steel-wound tubular tee of the present invention, comprising an annular connecting steel strip, the inner ring side of the annular connecting steel strip is attached to the outer wall of the plastic tube of the branch tube, and the side of the strip is twisted and twisted by the main tube a steel strip connection, the upper side is connected to the second end of the connecting member

[0013] In the steel-wound tubular tee of the present invention, the underside of the annular connecting steel strip is joined to the upper side of the adjacent continuous-wound steel strip of the main pipe.

[0014] In the plastic steel winding pipe tee of the present invention, a plurality of auxiliary connecting steel strips are included, and the inner side of each of the auxiliary connecting steel strips is attached to the outer wall of the plastic pipe of the branch pipe, and the two ends are respectively adjacent to the two adjacent sides. Adjacent surface connections or ends of the connector are respectively connected to adjacent surfaces of the adjacent twisted steel strips of the manifold, the plurality of auxiliary connecting strips sequentially forming the auxiliary connecting strip connection The connector or the main tube wraps the transverse direction of the stress transfer chain of the steel strip.

[0015] In the steel-wound tube tee of the present invention, a protective layer attached to the surface of the connector is included.

[0016] In the steel-wound tube tee of the present invention, a protective layer attached to the surface of the connecting member and the surface of the annular connecting steel strip is included.

[001 7] In the steel-wound tube tee of the present invention, a protective layer attached to the surface of the connecting member and the auxiliary connecting steel strip is included.

[0018] The technical solution adopted by the present invention to solve the second technical problem thereof is to provide a two-way manufacturing method of a plastic steel winding pipe, and the steel steel winding pipe tee includes a plastic steel winding main pipe and a plastic steel which are provided with a spirally wound steel strip on the outer wall of the plastic pipe. The winding branch pipe is characterized in that the plastic pipe end portion of the branch pipe is connected to the side wall of the plastic pipe of the main pipe, and the branch pipe axis, , -5 (?÷*上^¥4: mountain 11⁄2 card [ ^ .!

[0019] the spirally wound steel strip of the branch pipe is continuous along a spiral;

[0020] the end of the main winding steel strip which is cut off by the outer wall of the plastic pipe of the branch pipe is attached to the outer wall of the plastic pipe of the branch pipe;

[0021] comprising a connecting member, one side of the connecting member is attached to the outer wall of the plastic pipe of the branch pipe, the first end is connected to the wound steel strip with the main pipe being cut off, and the second end is wound along the main pipe An upright direction connecting the wound steel strips of the adjacent branch pipes;

[0022] the truncated wound steel strip adjacent to the wound steel strip of the adjacent branch pipe is directly connected to the adjacent branch pipe wound steel strip;

[0023] The method includes the following steps:

[0024] S1, preparing materials: preparing a steel-steel winding main pipe, a plastic-steel winding branch pipe and a connecting piece material of a required specification of a plastic steel winding pipe tee to be manufactured;

[0025] S2, find a point, draw a line, cut:

[0026] determining, according to a theoretical intersection line between the outer wall of the plastic tube and the outer wall of the plastic tube of the branch tube, a highest point and a lowest point at which the outer walls of the two tubes intersect, and a point is taken between the highest point and the lowest point. Determining coordinates of each point on the outer wall of the plastic tube of the branch tube according to the coordinate relationship of the points on the outer wall of the main plastic tube, and finding a point on the outer wall of the main plastic tube and the outer wall of the plastic tube of the branch tube according to the determined coordinates, Smoothly connecting the points to obtain the intersecting line of the outer wall of the main plastic pipe and the outer wall of the plastic pipe of the branch pipe; and the points on the intersecting line of the outer wall of the plastic pipe of the branch pipe are along the outer wall of the plastic pipe of the branch pipe along the main pipe Radially translating the main winding steel strip to expose a height distance of the outer wall of the main plastic tube, and smoothly connecting the translated points to obtain the intersecting line of the wrapped steel strip of the branch tube; [0027] according to the length of the main pipe and the intersecting position of the main pipe branch, the port position of the main pipe is determined in the direction of the main axis by the lowest point as the base point; and the branch pipe is determined along the axis of the branch pipe according to the length of the branch pipe Flat port position;

[0028] determining, according to the theoretical intersection line of the two sides of the intersecting portion of the wound steel strip of the main pipe and the outer wall of the plastic pipe of the branch pipe, respectively determining the two sides of the steel pipe wrapped by the outer wall of the plastic pipe of the branch pipe The lowest point coordinate and the highest point coordinate, find a point on the main winding steel strip according to the lowest point coordinate and the highest point coordinate of the two sides of the main winding steel strip being cut, and connect to obtain the main winding steel strip a line of intersection with the outer wall of the plastic tube of the branch pipe;

[0029] cutting the main plastic tube and the broken main winding steel strip along the intersecting line of the outer wall of the main plastic tube and the intersection line, and cutting the intersecting line along the outer wall of the plastic tube of the branch tube a plastic pipe of the branch pipe, the intersecting wire of the wrapped steel strip along the branch pipe and the branch pipe are radially cut to wind the steel pipe, and the branch pipe which is cut off at both ends is wound around the steel strip, and the flat pipe is cut between the main pipe and the branch pipe;

[0030] after the intersecting line of the outer wall of the plastic pipe of the branch pipe is matched with the intersecting line of the outer wall of the main plastic pipe, respectively, the steel wire strips of the main pipe wound and the adjacent pipe are respectively cut and connected Connection piece

[0031] S3, pre-processing: a connection portion of the end portion of the connecting member, a connecting portion of the end portion of the main winding steel strip to be cut off, and a corresponding connecting portion of the end portion and the adjacent branch pipe wrapped around the steel strip Pre-treatment before connection;

[0032] S4, steel strip connection: connecting the connecting member to the end portion of the main winding steel strip and the adjacent branch tube to be wound with a steel strip;

[0033] S5, plastic connection: a continuous closed plastic connection to the intersection of the outer wall of the plastic pipe of the branch pipe and the intersecting line of the outer wall of the main plastic pipe;

[0034] S6, water shut-off test: the water-tight test of the plastic steel winding pipe tee that completes the plastic connection.

[0035] In the manufacturing method of the steel-steel tube tee of the present invention, the steel-wound tube tee includes an annular connecting steel strip, and the inner ring side of the annular connecting steel strip is attached to the outer wall of the plastic tube of the branch tube, and the lower side Connected to the wound steel strip with the main tube being cut off, and the upper side connected to the second end of the connecting member;

[0036] the step S1 includes preparing a strip-shaped connecting steel strip;

[0037] the step S2 includes: after the intersecting line of the outer wall of the plastic pipe of the branch pipe is matched with the outer wall of the plastic pipe of the manifold, the intersecting line of the wrapped steel strip along the branch pipe is connected from the strip Cutting the splicing section of the spliced annular connecting steel strip on the steel strip;

[0038] the step S3 includes pre-connection pre-connection of the splicing section of the splicing section of the annular connecting steel strip;

[0039] the step S4 includes splicing the annular connecting steel strip splicing section along the intersecting wire of the branch pipe to obtain the annular connecting steel strip, and connecting the inner ring side of the annular connecting steel strip with the branch pipe The outer wall of the plastic pipe is attached to the lower side of the annular connecting steel strip and the wound steel strip which is cut off by the main pipe, and the upper side of the annular connecting steel strip is connected with the connecting member, and the other end of the branch pipe is wound around the end of the steel strip. .

[0040] In the method for manufacturing a steel-wound tube tee of the present invention, the steel-wound tube tee includes a plurality of auxiliary connecting steel strips, and each of the auxiliary connecting steel strips is attached to the outer wall of the plastic tube of the branch tube. The two ends are respectively connected to the adjacent surfaces of the two adjacent connecting members or the two ends are respectively connected with the adjacent tables of the two adjacent wound steel strips which are cut off, and the plurality of auxiliary connecting steel strips sequentially constitute the Abutting the connecting piece of the steel strip or the stress transmitting chain of the main direction of the steel strip in a lateral direction;

[0041] the step S1 includes preparing a strip-shaped connecting steel strip;

[0042] the step S4 includes intercepting adjacent surfaces of the adjacent two connecting members to intercept the adjacent surface The auxiliary steel strip is pre-treated, and the connecting surface of the auxiliary connecting steel strip is pretreated, and the auxiliary connecting steel strip is connected to the adjacent surface of the corresponding connecting member.

In the method for manufacturing a steel-wound tube tee of the present invention, after the step S4, the step SA is included: the molten plastic covers the bare metal surface of the connecting member and the wound steel strip.

[0044] In the manufacturing method of the steel-wound tubular two-pass of the present invention, after the step S4, the method includes the step SA: the molten plastic cover seals the connecting member, the annular connecting steel strip and the bare steel strip Metal surface.

[0045] In the method for manufacturing a steel-wound tube tee of the present invention, after the step S4, comprising the step SA: the molten plastic cover seals the connecting member, the auxiliary connecting steel strip and the bare strip of the wound steel strip Metal surface.

[0046] The steel-wound tubular two-pass and the manufacturing method thereof for implementing the present invention have the beneficial effects compared with the prior art:

[0047] 1. By properly connecting the connecting pipe at the branch pipe and the main pipe, the winding pipe steel strip of the main pipe is connected with the winding steel pipe of the branch pipe, and the structural weak link of the steel-wound pipe tee is enhanced - the branch pipe The strength and rigidity of the joint with the main pipe make the steel-wound pipe tee structure meet the strength and rigidity requirements for use;

[0048] 2. The problem of manufacturing a steel-wound tube tee is solved. According to the method for manufacturing a steel-wound tube tee according to the present invention, a steel-wound tube tee that satisfies the requirements for strength and rigidity can be manufactured. DRAWINGS

[0049] The present invention will be further described with reference to the accompanying drawings and embodiments, in which:

1 is a perspective view showing the structure of a conventional plastic steel wound pipe.

2 is a perspective view of an embodiment of a plastic steel wound pipe of the present invention.

3 is an enlarged view of a portion I in FIG. 2.

4 is a front view showing the structure of a branch pipe in the steel-wound tube tee of the present invention.

[0054] FIG. 5 is a view showing a method for determining a steel-wound tube in a method for manufacturing a steel-steel-wound tube tee according to the present invention.

[0055] Plastic steel winding pipe tee embodiment 1

As shown in FIG. 2 and FIG. 3, the steel-wound tubular tee 2 of the present invention comprises a plastic-steel winding main pipe 21, a plastic-steel winding branch pipe 23, an annular connecting steel strip 22a, and a connecting member 22c.

[0057] The plastic winding main pipe 21 is provided with a spirally wound steel strip 21b on the outer side of the plastic pipe 21a, and the plastic-wound branch pipe 23 is provided with a spirally wound steel strip 23b on the outer wall of the plastic pipe 23a, and the end of the plastic pipe 23a of the branch pipe 23. The portion is connected to the side wall of the plastic tube 21a of the main pipe 21, and the axis of the branch pipe 23 is located in the lateral direction of the axis of the main pipe 21 (the "transverse direction" refers to the lateral direction of the axial direction of the main pipe 21, and the axis of the branch pipe 23 can be The axes of the main tubes 21 may or may not intersect, and the axis of the branch tubes 23 may or may not be perpendicular to the axis of the main pipe 21.

[0058] The spirally wound steel strip 23b of the branch pipe 23 is continuous along its spiral.

[0059] The end portion of the main winding steel strip 21b, which is cut by the outer wall of the branch pipe plastic tube 23a, is attached to the outer wall of the branch pipe plastic tube 23a.

[0060] The inner ring side of the annular connecting steel strip 22a is attached to the outer wall of the branch pipe plastic tube 23a, the lower side is connected to the wound steel strip 21b where the main pipe 21 is cut, and the upper side is spliced to one end of the splicing piece 22c.

[0061] One side of the connecting member 22c is attached to the outer wall of the branch pipe plastic tube 23a, one end is connected to the upper side of the annular connecting steel strip 22a, and the other end is connected adjacent to the wound steel strip 21b in which the bob-tube 21 is cut. Wound steel strip of branch pipe 23 23b ₀ In the present embodiment, the connecting members 22c are respectively arranged corresponding to the wound steel strips 21b in which the main pipe 21 is cut. In other embodiments, the connecting members 22c may be arranged at intervals but not corresponding to the wound steel strip 21b from which the main pipe 21 is cut, and the object of the present invention can also be achieved.

When the cut main winding steel strip 21b is adjacent to the adjacent branch winding steel strip 23b, the cut main winding steel strip 21b is directly connected to the adjacent branch winding steel strip 23b.

[0063] In the present embodiment, the cut end portion of the branch-wound steel strip 23b is connected to the annular connecting steel strip 22a by a connecting plate 22b, and the connecting plate 22b is sized to be wound around the annular connecting steel strip 22a and the main pipe 21 After the connection of the belt 21b is completed, the actual distance between the cut end portion of the branch steel strip 23b and the annular connecting steel strip 22a is determined, which is convenient for processing. In other embodiments, it can be accurately positioned according to the relevant dimensions of the connection of the specific main pipe 21, the branch pipe 23 and the annular connecting steel belt 22a, and the end portion of the branch pipe wound steel strip 23b is cut accurately, so that the branch pipe is wound by the steel strip 23b. The ends are directly connected to the annular connection steel strip 22a. In other embodiments, the structure of the present invention B can also be realized by a structure in which the end portion of the branch steel strip 23b to be cut is not connected to the annular connecting steel strip 22a.

[0064] In the present embodiment, the connection of the annular connecting steel strip 22a and the wound steel strip 21b with the twisted tube 21 being cut is connected by the connecting plate 22d, that is, the end portion of the wound steel strip 21 b which is cut off by the main pipe 21 is intercepted. A part corresponding to the end of the wound steel strip 21b, which is cut off by the main pipe 21, respectively determines the size of the connecting plate 22d, and ensures that the connecting plate 22d-side is attached to the outer wall of the plastic tube 2. The branch wall 23 (instead of the winding steel strip which is cut off by the main pipe 21) The end of 21b is attached to the outer wall of the plastic tube 23a of the branch pipe 23, one side is butt-joined to the lower side of the annular connecting steel strip 22a, and one side is connected or overlapped with the end of the wound steel strip 21b where the tube 21 is cut off. The structure adopts the connecting plate 22d as a transition to ensure a good butt joint connection between the connecting plate 22d and the underside of the annular connecting steel strip 22a. In other embodiments, the end of the wound steel strip 21b, which is cut off by the main pipe 21, is attached to the outer wall of the plastic tube 2 of the branch pipe 23, and the lower side of the front end of the wound steel strip 21 h with the lower side of the annular connecting steel strip 22a and the main pipe 21 is cut off. The circular arc-shaped surface of the contact and wound steel strip 21b and the gap on the lower side of the annular connecting steel strip 22a are welded and welded with a weld material, and the object of the present invention can also be achieved.

[0065] Plastic steel winding pipe tee embodiment II

The steel-wound tubular tee 2 of the present invention comprises a plastic-steel winding main pipe 21, a plastic-steel winding branch pipe 23, and a connecting member 22c.

[0067] The plastic winding main pipe 21 is provided with a spirally wound steel strip 21b on the outer wall of the plastic pipe 21a, and the plastic winding branch pipe 23 is provided with a spirally wound steel strip 23b on the outer wall of the plastic pipe 23a, and the end of the plastic pipe 23a of the branch pipe 23 It is connected to the side wall of the plastic tube 21a of the main pipe 21, and the axis of the branch pipe 23 is located in the lateral direction of the axis of the manifold 21.

[0068] The spirally wound steel strip 23b of the branch pipe 23 is continuous along its spiral.

[0069] The end portion of the main winding steel strip 21b, which is cut by the outer wall of the branch pipe plastic tube 23a, is attached to the outer wall of the branch pipe plastic tube 23a.

[0070] One side of the connecting member is attached to the outer portion 3b of the branch plastic tube 23a, one end is correspondingly connected or lapped to the wound steel strip whose main tube is cut off, and the other end is connected in the upright direction of the wound steel strip 21b whose main tube is cut off. The adjacent branch pipe is wound around the steel strip 23b.

[0071] When the cut main winding steel strip 21b is adjacent to the adjacent branch winding steel strip 23b, the cut main winding steel strip 21b is directly connected to the adjacent branch winding steel strip 23b.

[0072] The end portion of the branch-wound steel strip 23b to be cut may be connected to the main-wound steel strip 21b intersecting therewith, or may be disconnected, and the object of the present invention can be achieved.

[0073] Plastic steel winding pipe tee embodiment III [0074] This embodiment is basically the same as the second embodiment. The difference is that a plurality of auxiliary connecting steel strips are disposed, and the inner side of each auxiliary connecting steel strip is attached to the outer wall of the branch plastic tube 23a, and the two ends are respectively adjacent to the two connecting members. The adjacent surfaces of 22c (i.e., the opposite or adjacent two side surfaces of the adjacent two connecting members 22c) are joined or both ends are respectively connected to adjacent surfaces of the adjacent main tubular stranded steel strips 21b.

[0075] The plurality of auxiliary connecting steel strips sequentially constitute the stress transmitting chain of the auxiliary connecting steel strip connecting member 22c in the lateral direction or the stress transmitting chain of the auxiliary connecting steel strip connected to the lateral direction of the steel strip 21b.

[0076] The plurality of auxiliary connecting steel strips may be annularly closed along the outer wall of the branch plastic tube 23a, or may not be closed, and the object of the present invention can be achieved.

[0077] In the above embodiments, the "connection" between the structures may employ a suitable connection including but not limited to soldering or bonding.

[0078] In the above embodiment, the connecting member 22c may have a plate-like structure or a block-like structure.

[0079] In the above embodiment, a protective layer, such as a paint protective layer or a plastic protective layer, is provided on the surface of the connecting member, the surface of the annular connecting steel strip, and the surface of the auxiliary connecting steel strip to improve the connecting member, the annular connecting steel strip, and the auxiliary connecting. Corrosion resistance of steel strips. The protective layer can completely cover or partially cover the exposed metal surface of the connecting piece, the annular connecting steel strip, and the auxiliary connecting steel strip.

[0080] A method of manufacturing a plastic steel wound pipe tee of the invention includes the following steps:

[0081] Preparation step: preparing the steel-wound main pipe, the steel-wound branch pipe and the connecting piece material of the required specifications of the steel-wound pipe tee to be manufactured.

[0082] Find points, draw lines, and cut steps:

[0083] As shown in FIGS. 3, 4, and 5, according to the theoretical intersection line between the outer wall of the plastic tube and the outer wall of the plastic tube of the branch tube (21 1 on the outer wall of the main plastic tube and 231 on the outer wall of the plastic tube of the branch tube), The highest point of the intersection of the outer walls of the two tubes (such as the H point of the towel in Figure 5) and the lowest point (such as the point B of the towel in Figure 5), the point is taken between the highest point and the lowest point, and the point supervisor is determined according to the projection relationship. The coordinates on the outer wall of the plastic 2 ia and the coordinates on the outer wall of the plastic tube 23a of the branch pipe are found on the outer wall of the main plastic tube 21a and the outer wall of the plastic tube 23a of the branch tube according to the determined coordinates, and the points are smoothly connected to obtain the intersecting line of the outer wall of the main plastic tube. 211 intersects the outer wall of the plastic pipe of the branch pipe 231.

[0084] As shown in FIG. 4, each point on the intersecting line 231 of the outer wall of the branch plastic tube 23a is respectively translated on the outer wall of the branch plastic tube 23a in the radial direction of the main pipe by the main winding steel strip 21b to expose the outer wall of the main plastic tube 21a. A height distance, smoothly connecting the translated points to obtain the wound steel strip intersecting line 221 of the branch pipe.

[0085] According to the length of the main pipe and the intersecting position of the main pipe and the branch pipe, the position of the port at both ends of the main pipe is determined in the direction of the main pipe axis at the lowest point as the base point. According to the length of the branch pipe, the position of the flat port of the branch pipe is determined along the axis of the branch pipe with the lowest point as the base point.

[0086] According to the theoretical intersection line of the both sides of the intersection of the main winding steel strip 21b and the branch plastic tube 2. The outer winding steel strip 21b is respectively determined by the lowest point coordinates of the two sides of the outer wall of the branch plastic tube 23a. The coordinates of the highest point are found on the main winding steel strip 21b according to the lowest point coordinate and the highest point coordinate of the two sides of the main winding steel strip 21b, and are connected to obtain the intersection of the main winding steel strip 21b and the outer wall of the branch plastic tube 23a. line.

[0087] cutting the main plastic pipe 21a and its cut main winding steel strip 21 b along the intersecting line 211 and the intersection line of the main pipe of the main plastic pipe, and cutting the plastic pipe 23a of the branch pipe along the intersecting line 231 of the outer pipe of the plastic pipe of the branch pipe, along the branch pipe The wound steel strip intersecting line 221 and the branch pipe radial cutting branch pipe are wound around the steel strip 23b, and the branch pipe cut at both ends is wound around the steel strip, and the flat end U of the cutting main pipe and the branch pipe are cut. [0088] After the branch pipe plastic pipe outer wall intersecting line 231 is matched with the main pipe outer wall intersecting line 211, the connecting piece 22c of the main pipe wound steel strip 21b and the adjacent branch pipe wound steel strip 23b are respectively corresponding to the intercepting connection. .

[0089] a pre-treatment step of pre-treating the connection portion of the end portion of the connecting member 22c, the connecting portion of the end portion of the main winding steel strip 21b at the cutting end, and the corresponding connecting portion of the end portion and the branch-wound steel strip 23b. Including grinding burrs to make the joints flat. When the joint has a protective layer (paint or plastic layer, etc.), remove the protective layer to expose the metal width of 5~10 mm for connection.

[0090] The steel strip connection step: connecting the connecting piece 22c to the end portion of the main winding steel strip 21b and the corresponding branch winding steel strip 23b, respectively, the steel strip connection is usually welded, or may be bonded Way to connect. The connection may be a direct connection, for example, the connecting member 22c is directly connected to the end portion of the main winding steel strip 21b that is cut off; or may be an indirect connection, such as the connecting member 22c is connected to the annular connecting steel strip 22a, and then the annular connecting steel strip 22a It is connected to the end of the twisted steel strip 21 b which is cut off.

[0091] Plastic connection: a continuous closed plastic connection is made to the joint line 231 of the plastic pipe outer wall of the branch pipe and the intersection line 211 of the outer pipe of the main pipe, which can be welded and welded by the extruded electrode material.

[0092] Water-tight test: The water-tight test of the plastic-steel-wound tube tee that completes the plastic connection is carried out to ensure that there is no leakage, and if there is leakage, repair is performed.

[0093] In the above method, after the steel strip joining step, a protective step may be included: the molten plastic covers the sealing joint 22c and the bare metal surface of the wound steel strips 21b, 23b.

[0094] When the manufactured steel-wound tube three-way structure is provided with an annular connecting steel strip, in the above method, the strip-connecting steel strip is prepared in the preparing step; in the point finding, drawing line, cutting step, including the branch tube plastic After the outer wall intersecting line 231 3⁄4 of the main pipe outer wall intersecting line 211 is matched, the splicing section of the spliced annular connecting steel strip 22a is taken from the strip-shaped connecting steel strip along the intersecting steel strip intersecting line 221; The step comprises pre-joining the splicing section of the splicing section of the annular connecting steel strip; in the steel strip connecting step, the splicing section of the splicing steel strip along the branching pipe is spliced to obtain the annular connecting steel strip 22q, The inner ring side of the annular connecting steel strip 22a is attached to the outer wall of the branch plastic tube 23a, and the lower side of the annular connecting steel strip 22a is connected with the wound steel strip 21b which is cut off by the main pipe, and the upper side of the annular connecting steel strip 22a and the connecting piece are connected. The 22c connecting branch pipe is wound around the steel strip 23b - the opposite end of the end. After the steel strip joining step, a protective step may also be included: the molten plastic covers the sealing joint 22c, the annular connecting steel strip 22a, and the bare metal surface of the wound steel strip 2ib, 23b.

[0095] When the manufactured steel-wound tube three-way structure is provided with an auxiliary connecting steel strip, in the above method, the strip-connecting steel strip is prepared in the preparation step; in the steel strip connecting step, the adjacent two connecting pieces are corresponding The adjacent surfaces intercept the auxiliary connecting steel strips connecting the adjacent sheets, pre-treating the joint table of the auxiliary connecting steel strips, and connecting the auxiliary connecting steel strips to the adjacent surfaces of the corresponding connecting members 22c. After the steel strip joining step, a protective step may also be included: the molten plastic covering the sealing joint 22c, the auxiliary joining steel strip, and the bare metal surface of the wound steel strips 21b, 23b.

Claims

Claim

A plastic steel winding pipe tee, comprising a plastic steel winding main pipe and a plastic steel winding branch pipe provided with a spirally wound steel strip on an outer wall of the plastic pipe, wherein the plastic pipe end portion of the branch pipe and the plastic pipe side wall of the main pipe are Interconnected, the branch axis is located in a lateral direction of the main axis;

The spirally wound steel strip of the branch pipe is continuous along a spiral;

The end of the main winding steel strip which is cut off by the outer wall of the plastic pipe of the branch pipe is attached to the outer wall of the plastic pipe of the branch pipe; and comprises a connecting member, one side of the connecting piece is attached to the outer wall of the plastic pipe of the branch pipe, and the first end a wound steel strip connecting the main pipe that is cut off, and a second end connecting the wound steel strip of the adjacent branch pipe in an upright direction of the wound steel strip in which the main pipe is cut;

The truncated wound steel strip adjoining the wound steel strip of the adjacent branch pipe is directly connected to the adjacent wrap-around steel strip.

2. The steel-wound tubular tee according to claim 1, comprising an annular connecting steel strip, wherein the inner ring side of the annular connecting steel strip is attached to the outer wall of the plastic pipe of the branch pipe, and the lower side and the cymbal The tube is connected by a truncated wound steel strip and the upper side is connected to the second end of the connector.

3. The steel-wound tubular pipe according to claim 2, wherein the lower side of the annular connecting steel strip is connected to the upper side of the adjacent continuous-wound steel strip of the main pipe.

Adding * l3⁄4 1 3⁄4 of 朔昝昝昝诵苴蛑苴蛑 ^ ^ ^ ^ ^ 句句名名名名名名名名名名名名名所述所述所述所述所述所述所述所述所述所述所述所述所述所述所述所述所述所述所述所述Adjacent surface joints or two ends of the two adjacent connecting members are respectively connected to adjacent surfaces of the two adjacently wound winding steel strips, and the plurality of auxiliary connecting steel strips sequentially constitute the auxiliary connecting steel strip connection The connector or the main tube is wound in a transverse direction of the stress transfer chain of the steel strip.

5. The steel-wound tubular tee of claim 1 comprising a protective layer attached to said connector surface h.

The steel-wound tubular tee according to claim 2 or 3, comprising a protective layer attached to the surface of the connecting member and to the surface of the annular connecting steel strip.

7. The steel-wound tubular tee of claim 4, comprising a protective layer attached to the surface of the connector and to the surface of the auxiliary connecting steel strip.

8. - A plastic steel winding pipe tee manufacturing method, the plastic steel winding pipe tee comprises a plastic steel winding main pipe and a plastic steel winding branch pipe provided with a spirally wound steel strip on the outer wall of the plastic pipe, wherein the plastic pipe end portion of the branch pipe is The side walls of the main plastic tube are connected to each other, and the axis of the branch tube is located in a lateral direction of the main axis;

The spirally wound steel strip of the branch pipe is continuous along a spiral;

The truncated wound steel strip adjoining the wound steel strip of the adjacent branch pipe is directly connected to the adjacent wrap-around steel strip;

The method includes the following steps -

S1. Preparation: Prepare the plastic-steel winding main pipe, plastic-steel winding branch pipe and connecting piece materials of the required specifications of the plastic-steel winding pipe tee to be manufactured; 52, find points, draw lines, cut:

Determining the highest point and the lowest point of the intersection of the outer walls of the two tubes according to the theoretical intersection line of the outer wall of the plastic tube of the outer tube of the plastic tube, and taking a point between the highest point and the lowest point, and determining according to the projection relationship The coordinates of each point on the outer wall of the main plastic tube and the coordinates on the outer wall of the plastic tube of the branch tube are found on the outer side of the main plastic tube and the plastic tube outside the branch tube according to the determined coordinates. Connecting the points to obtain a 3⁄4 intersecting line outside the main plastic tube and an intersecting line of the outer tube of the plastic tube of the branch tube; and the points on the intersecting line of the outer wall of the plastic tube of the branch tube are along the outer wall of the plastic tube of the branch tube along the main tube Radially translating the main winding steel strip to expose a height distance of the outer wall of the main plastic tube, and smoothly connecting the translated points to obtain the intersecting line of the wrapped steel strip of the branch tube;

According to the length of the main pipe and the intersecting position of the main pipe and the branch pipe, the port positions of the main pipe are respectively determined along the main axis direction based on the lowest point; and the pipe flat port is determined along the axis of the branch pipe according to the length of the branch pipe; Location

Determining, according to the theoretical intersection line of the two sides of the intersecting portion of the wound steel strip of the main pipe and the outer wall of the plastic pipe of the branch pipe, respectively determining the lowest point coordinate of the surface of the main winding steel strip being cut by the outer wall of the plastic pipe of the branch pipe And a coordinate of the highest point, finding a point on the winding steel strip of the manifold according to the lowest point coordinate and the highest point coordinate of the surface of the tube wound steel strip being cut off, and connecting to obtain the main winding steel strip and the The intersection line of the outer wall of the plastic pipe of the branch pipe;

Cutting the main plastic tube and the main winding steel strip which are cut off along the intersecting line of the outer wall of the main plastic tube and the intersection line, and cutting the plastic tube of the branch tube along the intersecting line of the outer wall of the plastic tube of the branch tube a winding steel strip along the intersecting line of the branch pipe and the branch pipe are radially cut to wind the steel strip, and the branch pipe which is cut off at both ends is wound around the steel strip, and the main pipe and the branch pipe port are cut;

After the intersecting line of the outer wall of the plastic pipe of the branch pipe is matched with the intersecting line of the outer wall of the main pipe of the main pipe, respectively, the connecting piece connecting the truncated main winding steel strip and the adjacent branch pipe to the steel strip is respectively intercepted and connected ;

53. Pre-treatment: connecting the connecting portion of the end of the connecting member, the connecting portion of the end portion of the main winding steel strip to the cut portion, and the connecting portion of the end portion with the adjacent connecting portion of the adjacent branch tube wrapped steel strip Pretreatment

54. Steel strip connection: connecting the connecting member to the end portion of the main winding steel strip and the adjacent branch tube winding steel strip;

55. Plastic connection: a continuous closed plastic connection is made to the intersection of the outer wall of the plastic pipe of the branch pipe and the intersection of the outer wall of the main plastic pipe;

56. Water-tight test: The water-tight test is performed on the plastic steel wound pipe two-pass that completes the plastic connection.

9. The method of manufacturing a steel-wound tube tee according to claim 8, wherein the plastic-steel-wound tube tee comprises an annular connecting steel strip, and the annular connecting steel strip inner ring side of the branch tube plastic tube outer wall phase a wound, a lower side of the main pipe is connected to the wound steel strip, and an upper side is connected to the second end of the connecting member;

The step S1 includes preparing a strip-shaped connecting steel strip;

The step S2 includes: after the intersecting line of the outer wall of the plastic pipe of the branch pipe is matched with the intersecting line of the outer wall of the main plastic pipe, the intersecting wire of the wrapped steel strip along the branch pipe is connected from the strip-shaped connecting steel strip Intercepting the splicing section of the spliced annular connecting steel strip;

The step S3 includes pre-joining the splicing section of the splicing section of the annular connecting steel strip; the step S4 includes splicing the circular splicing steel strip along the intersecting line of the wrapped steel strip of the branch pipe Obtaining the annular connecting steel strip, and attaching the inner ring side of the annular connecting steel strip to the outer wall of the plastic pipe of the branch pipe, connecting the lower side of the annular connecting steel strip and the wound steel strip which is cut off by the connecting pipe, and connecting The upper side of the annular connecting steel strip is connected to the connecting member The branch pipe is wound around the other end of the steel strip at one end.

10. The method of manufacturing a steel-wound tube tee according to claim 8, wherein the steel-wound tube tee comprises a plurality of auxiliary connecting steel strips, and each of the auxiliary connecting steel strips has a branch tube plastic tube inside. The outer wall is attached, and the two ends are respectively connected to adjacent surfaces of the two adjacent connecting members or the two ends are respectively connected with adjacent surfaces of the adjacent two wound steel strips which are cut off, the plurality of auxiliary connecting steels a stress transmitting chain in a lateral direction of the connecting member or the main winding steel strip that sequentially constitutes the auxiliary connecting steel strip;

The step S1 includes preparing a strip-shaped connecting steel strip;

The step S4 includes: intercepting an auxiliary connecting steel strip connecting the adjacent surfaces corresponding to adjacent surfaces of the two adjacent connecting members, and pre-treating the connecting surface of the auxiliary connecting steel strip, and the auxiliary connecting steel strip Connected to an adjacent surface of the corresponding connector.

11. The method of manufacturing a steel-wound tube tee according to claim 8, wherein after said step S4, comprising the step SA: molten plastic covering the bare metal surface of the connecting member and the wound steel strip .

12. The method of manufacturing a steel-wound tube tee according to claim 9, wherein after the step S4, comprising the step SA: a molten plastic covering the sealing member, the annular connecting steel strip, and the Wrap the exposed metal surface of the steel strip.

The method of manufacturing a steel-steel tube tee according to claim 10, further comprising the step SA: sealing the sealing member, the auxiliary connecting steel strip and the sealing material after the step S4 The bare metal surface of the wrapped steel strip.