Wall pipe with pressure enhanced winding structure

Abstract

The utility model designs the pressure enhanced winding structure wall pipe aiming at the problem that the internal pressure borne by the existing winding pipe does not meet the requirement of the pipe diameter of 1.6 m or more, so that the finished pipe wall can bear the internal pressure meeting the requirement and achieve the external ring stiffness meeting the requirement. The utility model discloses a pressure enhanced winding structure wall pipe which comprises a winding type laminated pipe wall and a winding type reinforcing structure. The winding type laminated pipe wall and the winding type reinforcing structure are both formed in a winding mode. The winding type laminated pipe wall comprises an inner layer formed by winding two layers of sheets in the first winding direction and an outer layer formed by winding two layers of sheets in the second winding direction on the periphery of the inner layer. The sheets of the inner layer and the outer layer are continuous, and the same sheet is adopted by the two layers of sheets; the winding type reinforcing structure is bonded to the outer layer, and the thread pitch is the same as that of the winding type laminated pipe wall.

Description

Technical Field

[0001] The utility model relates to the field of winding pipes, in particular to a pressure-enhanced winding structure wall pipe. Background Art

[0002] Existing winding pipes are often designed for smaller diameters, such as 0.4m and 0.6m corrugated pipes. Larger diameters will produce greater internal and external pressures. For example, when the diameter is 1.6m (inner diameter), the internal pressure needs to withstand a strength of 0.6MPa, while the external pressure needs to have a strength of 16KN / M 2 The ring stiffness of the above-mentioned caliber of pipe can be achieved by a plastic extruder that directly extrude solid arm pipes. However, the production efficiency of the plastic extruder that directly extrude solid wall pipes is low, and the plastic extruder often has an upper limit on the extrusion flow rate. Replacing a larger-scale plastic extruder not only increases the cost, but also requires the design of relevant heat dissipation methods for the extruded materials. In order to ensure that the strength of the pipe is qualified, the finished pipe needs to be additionally cooled, which will further reduce production efficiency. The advantage of the winding pipe is that compared with the molding machine that directly extrude solid wall pipes, the overall scale required is smaller, and no more auxiliary cooling equipment is required. However, the conventional winding method is not sufficient to support the internal and external pressure requirements of pipes with a diameter of 1.6m and above. For this reason, it is necessary to design a winding pipe with a pressure-enhanced structure. Summary of the invention

[0003] The utility model is designed to solve the problem that the internal pressure that the existing winding pipe can withstand does not meet the requirements of pipe diameters of 1.6m and above, and a pressure-enhanced winding structure wall pipe is designed so that the finished pipe wall of the utility model can withstand the required internal pressure and achieve the required external ring stiffness.

[0004] A pressure-enhanced winding structure wall pipe, comprising a winding laminated pipe wall and a winding reinforcement structure; the winding laminated pipe wall and the winding reinforcement structure are both wound and formed;

[0005] The wound laminated tube wall comprises: an inner layer formed by winding two layers of sheets along a first winding direction, and an outer layer formed by winding two layers of sheets along a second winding direction around the outer periphery of the inner layer;

[0006] The inner and outer sheets are continuous, and the two layers are made of the same sheet;

[0007] The wound reinforcement structure is bonded to the outer layer, and the pitch is the same as the pitch of the wound laminated tube wall.

[0008] Due to the different requirements for internal pressure and external ring stiffness, the internal pressure requirement can be met after using the wrapped laminated pipe wall, but the external ring stiffness requirement is still not met, so a wrapped reinforcement structure is needed to further enhance the peripheral ring stiffness.

[0009] According to the experience of solid wall tubes, the ability of the tube body to withstand internal pressure can be effectively increased by increasing the thickness of the tube wall, and the connection points of adjacent spirals of the wound tube may be weak points of internal pressure. For this reason, they need to be overlapped and pressed together to allow them to deform naturally and increase the bearing capacity of the connection points. At the same time, due to the limitation of the sheet materials used, the thickness of a single sheet is limited. In order to have a qualified internal pressure bearing capacity, 4 layers of sheet materials are required. In order to further speed up production, the present application adopts the method of winding two layers of sheet materials at the same time, so that only two windings are required, and the complex structure of the winding machine caused by winding 4 layers at the same time is avoided. Balanced between cost and efficiency.

[0010] In order to further optimize the production process, a two-layer continuous production method is adopted, that is, taking the fixed-length tube winding from left to right as an example; the inner layer is wound clockwise from left to right, and after winding once in situ at the right end, the outer layer is wound clockwise from right to left. In this way, the connection lines of the inner and outer layers are staggered, which is conducive to enhancing the strength of the connection points.

[0011] The winding reinforcement structure is wound along the first winding direction, that is, clockwise from left to right, which means that it is necessary to connect and start from the left end after the outer layer is wound. This can further strengthen the ring stiffness of the finished pipe.

[0012] The winding reinforcement structure is wound along the second winding direction, that is, it is wound synchronously with the outer layer. This method can further shorten the production time and thus increase production efficiency.

[0013] Preferably, the first winding direction and the second winding direction are opposite; the pitch of the inner layer and the outer layer is the same;

[0014] The two layers of sheets are called the first sheet and the second sheet from the inside to the outside according to the radial relationship of the tube wall;

[0015] Adjacent first sheets overlap and are flattened by a pressing cylinder to a thickness equal to the thickness of the first sheet, and the overlapped portion deforms naturally;

[0016] Adjacent second sheets overlap and are flattened by a pressing cylinder to the thickness of the second sheet, and the overlapped portion deforms naturally;

[0017] The axial spacing between the overlapping point of the first sheet and the overlapping point of the second sheet is less than half of the inner layer pitch.

[0018] Preferably, the thickness of the first sheet and the second sheet is 1.25 cm, the thickness of the inner layer is 2.5 cm, and the thickness of the wound laminated tube wall is 5 cm;

[0019] The inner diameter of the inner layer profile is greater than or equal to 1.6m.

[0020] Preferably, the winding reinforcement structure uses a shaped material, the cross section of the shaped material is triangular, and the shaped material includes a first shaped material, a second shaped material, and a third shaped material;

[0021] The first shaped material includes a second shaped material and a third shaped material in sequence;

[0022] A plurality of heat dissipation holes are arranged in the first profile;

[0023] The bonding edge with the wound laminated tube wall is taken as the bottom edge, and the center of the heat dissipation hole is arranged on the high line corresponding to the bottom edge, and all the heat dissipation holes have the same diameter.

[0024] Preferably, the winding reinforcement structure uses a shaped material, the cross section of the shaped material is triangular, and the shaped material includes a first shaped material and a second shaped material;

[0025] The bottom edge of the first profile is bonded to the wound laminated tube wall, and the second profile is compounded on the outside;

[0026] A plurality of heat dissipation holes are arranged in the first profile;

[0027] The center of the heat dissipation hole is arranged on the high line corresponding to the bottom edge, and all the heat dissipation holes have the same diameter.

[0028] Preferably, the wound reinforcement structure is wound around the outer circumference of the outer layer using a first winding direction.

[0029] Preferably, the wound reinforcement structure is wound around the outer circumference of the outer layer using the second winding direction.

[0030] The beneficial effect of the utility model is that it can use winding pipes instead of solid wall pipes and achieve the same effect, and proposes a new solution for the production of plastic pipes of 1.6m and above. While meeting the internal pressure requirements and ring stiffness requirements, compared with the original solid wall pipe production, the finished pipe production time of the utility model is shorter and the production efficiency is higher, which effectively improves the production efficiency, and at the same time reduces the scale demand for plastic extruders, further reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 3D structural diagram of the utility model;

[0032] Figure 2 Schematic diagram of the stacking of the winding type laminated tube wall of the utility model;

[0033] Figure 3 A cross-sectional view of a tube wall unit in Example 1;

[0034] Figure 4 A cross-sectional view of a tube wall unit in Example 2;

[0035] In the figure: 1. the first sheet material of the inner layer, 2. the second sheet material of the inner layer, 3. the first sheet material of the outer layer, 4. the second sheet material of the outer layer, 5. the third shaped material in Example 1, 6. the second shaped material in Example 1, 7. the first shaped material in Example 1, 8. heat dissipation holes, 9. the first shaped material in Example 2, 10. the second shaped material in Example 2. DETAILED DESCRIPTION

[0036] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, the pressure-enhanced winding structure wall tube comprises a winding laminated tube wall and a winding reinforcement structure; the winding laminated tube wall and the winding reinforcement structure are both wound and formed;

[0038] The wound laminated tube wall comprises: an inner layer formed by winding two layers of sheets along a first winding direction, and an outer layer formed by winding two layers of sheets along a second winding direction around the outer periphery of the inner layer;

[0039] The inner and outer sheets are continuous, and the two layers are made of the same sheet;

[0040] The wound reinforcement structure is bonded to the outer layer, and the pitch is the same as the pitch of the wound laminated tube wall.

[0041] The two-layer sheet is produced continuously, that is, taking the fixed-length tube winding from left to right as an example; the inner layer is wound clockwise from left to right, and after winding once in situ at the right end, the outer layer is wound clockwise from right to left. In this way, the connection lines of the inner and outer layers are staggered, which is conducive to enhancing the strength of the connection points.

[0042] The first winding direction is opposite to the second winding direction; the inner layer and the outer layer have the same pitch;

[0043] The two layers of sheets are called the first sheet and the second sheet from the inside to the outside according to the radial relationship of the tube wall;

[0044] Adjacent first sheets overlap and are flattened by a pressing cylinder to a thickness equal to the thickness of the first sheet, and the overlapped portion deforms naturally;

[0045] Adjacent second sheets overlap and are flattened by a pressing cylinder to the thickness of the second sheet, and the overlapped portion deforms naturally;

[0046] The axial spacing between the overlapping point of the first sheet and the overlapping point of the second sheet is less than half of the inner layer pitch.

[0047] like Figure 2As shown in A1, the first sheet material and the second sheet material of the inner layer are wound at the same time, the first sheet material 1 of the inner layer is overlapped, and pressed together under the pressure of the roller until Figure 2 The second sheet 2 of the inner layer in A2 overlaps and is pressed to Figure 2 A3 in.

[0048] After all the inner layer winding and pressing are completed, enter Figure 2 The B series.

[0049] B1 is the first sheet 3 of the outer layer, which is overlapped and pressed together under the pressure of the roller. Figure 2 The second sheet 4 of the outer layer in B2 is overlapped and pressed to Figure 2 B3 in.

[0050] The thickness of the first sheet and the second sheet is 1.25 cm, the thickness of the inner layer is 2.5 cm, and the thickness of the wound laminated tube wall is 5 cm;

[0051] The inner diameter of the inner layer profile is greater than or equal to 1.6m.

[0052] The winding reinforcement structure uses a profile, the cross section of the profile is triangular, and the profile includes a first profile, a second profile, and a third profile;

[0053] The first shaped material 7 sequentially wraps the second shaped material 6 and the third shaped material 5;

[0054] A heat dissipation hole 8 is provided in the first profile;

[0055] The bonding edge with the wound laminated tube wall is taken as the bottom edge, and the center of the heat dissipation hole is arranged on the high line corresponding to the bottom edge.

[0056] The wound reinforcement structure is wound around the outer circumference of the outer layer using a second winding direction. Example

[0057] This embodiment is the same as the embodiment 1 in that it includes a wound laminated tube wall structure, and the difference lies in the wound reinforcement structure.

[0058] like Figure 4 In the embodiment shown, the winding reinforcement structure uses a profile, the cross section of the profile is triangular, and the profile includes a first profile 9 and a second profile 10;

[0059] The bottom edge of the first profile is bonded to the wound laminated tube wall, and the second profile is compounded on the outside;

[0060] Two heat dissipation holes are arranged in the first profile;

[0061] The center of the heat dissipation hole is arranged on the high line corresponding to the bottom edge, and all the heat dissipation holes have the same diameter.

[0062] And in this embodiment, the winding reinforcement structure is wound around the outer periphery of the outer layer using the first winding direction.

[0063] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure-enhanced wound structure wall pipe, characterized in that: It includes a winding type laminated tube wall and a winding type reinforcement structure; the winding type laminated tube wall and the winding type reinforcement structure are both formed by winding; The wound laminated tube wall comprises: an inner layer formed by winding two layers of sheets along a first winding direction, and an outer layer formed by winding two layers of sheets along a second winding direction around the outer periphery of the inner layer; The inner and outer sheets are continuous, and the two layers are made of the same sheet; The wound reinforcement structure is bonded to the outer layer, and the pitch is the same as the pitch of the wound laminated tube wall.

2. The pressure-reinforced wound structural wall pipe according to claim 1, characterized in that: The first winding direction is opposite to the second winding direction; the inner layer and the outer layer have the same pitch; The two layers of sheets are called the first sheet and the second sheet from the inside to the outside according to the radial relationship of the tube wall; Adjacent first sheets overlap and are flattened by a pressing cylinder to a thickness equal to the thickness of the first sheet, and the overlapped portion deforms naturally; Adjacent second sheets overlap and are flattened by a pressing cylinder to the thickness of the second sheet, and the overlapped portion deforms naturally; The axial spacing between the overlapping point of the first sheet and the overlapping point of the second sheet is less than half of the inner layer pitch.

3. The pressure-reinforced wound structural wall pipe according to claim 2, characterized in that: The thickness of the first sheet and the second sheet are both 1.25cm, the thickness of the inner layer is 2.5cm, and the thickness of the wound laminated tube wall is 5cm; The inner diameter of the inner layer profile is greater than or equal to 1.6m.

4. The pressure-reinforced wound structural wall pipe according to claim 1, characterized in that: The winding reinforcement structure uses a profile, the cross section of the profile is triangular, and the profile includes a first profile, a second profile, and a third profile; The first shaped material includes a second shaped material and a third shaped material in sequence; A plurality of heat dissipation holes are arranged in the first profile; The bonding edge with the wound laminated tube wall is taken as the bottom edge, and the center of the heat dissipation hole is arranged on the high line corresponding to the bottom edge, and all the heat dissipation holes have the same diameter.

5. The pressure-reinforced wound structural wall pipe according to claim 1, characterized in that: The winding reinforcement structure uses a profile, the cross section of the profile is triangular, and the profile includes a first profile and a second profile; The bottom edge of the first profile is bonded to the wound laminated tube wall, and the second profile is compounded on the outside; A plurality of heat dissipation holes are arranged in the first profile; The center of the heat dissipation hole is arranged on the high line corresponding to the bottom edge, and all the heat dissipation holes have the same diameter.

6. A pressure-reinforced wound structural wall pipe according to claim 4 or 5, characterized in that: The wound reinforcement structure is wound around the outer circumference of the outer layer using a first winding direction.

7. A pressure-reinforced wound structural wall pipe according to claim 4 or 5, characterized in that: The wound reinforcement structure is wound around the outer circumference of the outer layer using a second winding direction.

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