Composite forming module for double-walled corrugated pipe with water flow

Abstract

Composite forming module for double-walled corrugated pipe with water flow, characterized in that it comprises two module bodies used in pairs, wherein the two module bodies are symmetrical; the module body is provided with an upper vacuum hole and a lower vacuum hole that are interconnected, as well as an upper water chamber and a lower water chamber that are interconnected, wherein the upper water chamber is located on the outside of the upper vacuum hole and the lower water chamber is located on the outside of the lower vacuum hole, the upper vacuum holes of the two module bodies are interconnected, and the lower vacuum holes of the two module bodies are interconnected; The module body is provided with an upper water chamber cover plate that seals the upper water chamber and a lower water chamber cover plate that seals the lower water chamber, wherein the upper water chamber cover plate and the lower water chamber cover plate are each connected to the module body by bolts.

Description

TECHNICAL AREA

[0001] The present utility model relates to the field of forming technology for the production of corrugated pipes, in particular a composite forming module for double-walled corrugated pipe with water flow. STATE OF THE ART

[0002] As in Fig. Figure 1 shows a conventional forming module for water-cooled, double-walled plastic corrugated tubing. Such a forming module is typically a welded module made of an aluminum casting alloy, using aluminum alloys such as ZL104 or ZL107. A vacuum tube 8, forming a vacuum channel, is cast onto the module body 1, while a water chamber cover plate 9 is welded onto the module body 1 to form a cooling water chamber.

[0003] The advantages of the aforementioned forming module lie in its high heat exchange efficiency and its simple and straightforward processing and manufacturing. Years of market experience have shown that, despite these advantages, welded forming modules exhibit significant defects such as cooling water leaks, casting sand holes, and porosity.

[0004] The primary cause of these defects lies in the inherent weaknesses of the casting and welding processes of aluminum alloys. Casting processes frequently result in defects such as sand pits, shrinkage cavities, and cracks, while welding processes generate thermal stresses that exacerbate cracks and thus lead to water leakage. These process defects represent an industry-wide challenge that cannot be completely eliminated. Reduction is only possible at considerable expense. CONTENTS OF THE PRESENT USE SAMPLE

[0005] In view of the aforementioned shortcomings, the technical problem to be solved by the present utility model is to provide a composite forming module for double-walled corrugated pipe with water flow, avoiding welding and casting defects.

[0006] To solve the aforementioned technical problem, the present utility model provides the following technical solution:

[0007] A composite forming module for double-walled corrugated pipe with water flow comprises: two module bodies used in pairs, wherein the two module bodies are symmetrical;

[0008] The module body is provided with an upper vacuum hole and a lower vacuum hole that are interconnected, as well as an upper water chamber and a lower water chamber that are interconnected, wherein the upper water chamber is located on the outside of the upper vacuum hole and the lower water chamber is located on the outside of the lower vacuum hole, the upper vacuum holes of the two module bodies are interconnected, and the lower vacuum holes of the two module bodies are interconnected;

[0009] The module body is provided with an upper water chamber cover plate that seals the upper water chamber and a lower water chamber cover plate that seals the lower water chamber, the upper water chamber cover plate and the lower water chamber cover plate each being connected to the module body by bolts.

[0010] Preferably, the upper vacuum hole is divided into a first upper vacuum hole and a second upper vacuum hole, which are interconnected, while the lower vacuum hole is divided into a first lower vacuum hole and a second lower vacuum hole, which are interconnected.

[0011] Preferably, the upper water chamber is divided into a first upper water chamber and a second upper water chamber, which are connected to each other, wherein the first upper water chamber is located on the outside of the first upper vacuum hole, while the second upper water chamber is located on the outside of the second upper vacuum hole.

[0012] The lower water chamber is divided into a first lower water chamber and a second lower water chamber, which are interconnected, with the first lower water chamber being located on the outside of the first lower vacuum hole, while the second lower water chamber is located on the outside of the second lower vacuum hole;

[0013] The second upper vacuum hole and the second lower vacuum hole are connected to each other, and the second upper water chamber and the second lower water chamber are connected to each other;

[0014] The upper water chamber cover is divided into a first upper water chamber cover plate, which seals the first upper water chamber, and a second upper water chamber cover plate, which seals the second upper water chamber, and the lower water chamber cover plate is divided into a first lower water chamber cover plate, which seals the first lower water chamber, and a second lower water chamber cover plate, which seals the second lower water chamber.

[0015] Preferably, the bottom of the first upper vacuum hole runs parallel to that of the first upper water chamber, while the bottom of the second upper vacuum hole runs parallel to that of the second upper water chamber;

[0016] The bottom of the first lower vacuum hole runs parallel to that of the first lower water chamber, while the bottom of the second lower vacuum hole runs parallel to that of the second lower water chamber.

[0017] Preferably, the module body is provided with two upper water chambers and two lower water chambers along the axial direction, and the module body is provided with two upper vacuum holes and two lower vacuum holes;

[0018] The two upper vacuum holes on the same axial side are connected to each other;

[0019] The first two lower water chambers are connected to each other.

[0020] Preferably, the first two upper water chambers are each connected to a water inlet and outlet connection.

[0021] Preferably, the water inlet and outlet connections are provided on the first upper water chamber cover plates.

[0022] Preferably, the module body is firmly connected to a module pressure plate, wherein the module pressure plate is provided with a vacuum channel, the vacuum channel being connected to the second lower vacuum hole.

[0023] Preferably, a sealing ring is provided between the first upper water chamber cover plate, the second upper water chamber cover plate, the first lower water chamber cover plate, the second lower water chamber cover plate, and the module body.

[0024] The application of the above-mentioned technical solution results in the following advantageous effects of the present utility model:

[0025] In the present application, the upper and lower water chamber cover plates are each attached to the module body by bolts. The upper and lower vacuum holes are created by drilling into the module body. This eliminates inherent defects in prior art casting and welding processes, ensuring that the module body is of high quality and preventing defects such as water or air leakage. BRIEF DESCRIPTION OF THE DRAWING Fig. Figure 1 is a schematic representation of the cross-sectional structure of a composite forming module for water-cooled, double-walled corrugated pipe according to the state of the art; Fig. Figure 2 is a schematic structural representation of the composite forming module for double-walled corrugated pipe with water flow according to an embodiment of the present utility model; Fig. Figure 3 is a schematic representation of the cross-sectional structure of the composite forming module for double-walled corrugated pipe with water flow according to an embodiment of the present utility model; Fig. 4 is a schematic structural representation of the right-hand form system in Fig. 1; Fig. Figure 5 is an enlarged schematic structural representation in direction A. Fig. 4; Fig. Figure 6 is an enlarged schematic structural representation in the direction B in Fig. 4; Fig. Figure 7 is a schematic representation of the direction of flow of the cooling water;

[0026] In the drawings: 1. Module body; 11. First upper water chamber; 12. Second upper water chamber; 13. First upper vacuum port; 14. Second upper vacuum port; 15. First lower water chamber; 16. Second lower water chamber; 17. First lower vacuum port; 18. Second lower vacuum port; 19. Intermediate water line; 2. Module pressure plate; 21. Vacuum channel; 3. First upper water chamber cover plate; 4. Second upper water chamber cover plate; 5. First lower water chamber cover plate; 6. Second lower water chamber cover plate; 7. Water inlet and outlet connection; 8. Vacuum tube; 9. Water chamber cover plate. DETAILED DESCRIPTION

[0027] To present the objectives, technical solutions, and advantages of this utility model more clearly and comprehensibly, a more detailed description of the utility model follows, with reference to the drawings and embodiments. It is understood that the specific embodiments described here serve only to illustrate the utility model and do not limit its scope.

[0028] As in Fig. 2 and Fig. 3 shown together, comprises a composite forming module for double-walled corrugated pipe with water flow: two module bodies 1 used in pairs, wherein the two module bodies 1 are symmetrical;

[0029] The module body 1 is provided with an upper vacuum hole and a lower vacuum hole that are interconnected, as well as an upper water chamber and a lower water chamber that are interconnected, wherein the upper water chamber is located on the outside of the upper vacuum hole and the lower water chamber is located on the outside of the lower vacuum hole, the upper vacuum holes of the two module bodies 1 are interconnected, and the lower vacuum holes of the two module bodies 1 are interconnected;

[0030] The module body 1 is provided with an upper water chamber cover plate that seals the upper water chamber and a lower water chamber cover plate that seals the lower water chamber, the upper water chamber cover plate and the lower water chamber cover plate each being connected to the module body 1 by bolts.

[0031] In the present application, the upper and lower water chamber cover plates are each attached to the module body 1 by means of bolts. The upper and lower vacuum holes are created by drilling into the module body 1. This eliminates inherent defects in prior art casting and welding processes, thereby ensuring that the module body 1 is of high quality and preventing defects such as water or air leakage.

[0032] As in Fig. 3 and Fig. As shown in Figure 4, the upper vacuum hole is divided into a first upper vacuum hole 13 and a second upper vacuum hole 14, which are interconnected, to facilitate drilling, while the lower vacuum hole is divided into a first lower vacuum hole 17 and a second lower vacuum hole 18, which are interconnected, with the first upper vacuum holes 13 of the two module bodies 1 being interconnected, and the first lower vacuum holes 17 of the two module bodies 1 being interconnected.

[0033] To ensure uniform cooling, the wall thickness between the vacuum holes and the water chambers must be the same everywhere. The upper water chamber is divided into a first upper water chamber 11 and a second upper water chamber 12, which are connected to each other, with the first upper water chamber 11 being located on the outside of the first upper vacuum hole 13, while the second upper water chamber 12 is located on the outside of the second upper vacuum hole 14. The wall thickness between the first upper water chamber 11 and the first upper vacuum hole 13 is essentially the same as the wall thickness between the second upper water chamber 12 and the second upper vacuum hole 14.

[0034] The lower water chamber is divided into a first lower water chamber 15 and a second lower water chamber 16, which are connected to each other, with the first lower water chamber 15 being located on the outside of the first lower vacuum hole 17, while the second lower water chamber 16 is located on the outside of the second lower vacuum hole 18, the wall thickness between the first lower water chamber 15 and the first lower vacuum hole 17 being substantially equal to the wall thickness between the second lower water chamber 16 and the second lower vacuum hole 18.

[0035] The second upper water chamber 12 is connected to the second lower water chamber 16 via an intermediate water line 19, while the second upper vacuum hole 14 and the second lower vacuum hole 18 are connected to each other.

[0036] The upper water chamber cover is divided into a first upper water chamber cover plate 3, which seals the first upper water chamber 11, and a second upper water chamber cover plate 4, which seals the second upper water chamber 12. The lower water chamber cover plate is divided into a first lower water chamber cover plate 5, which seals the first lower water chamber 15, and a second lower water chamber cover plate 6, which seals the second lower water chamber 16. A sealing ring is provided between the first upper water chamber cover plate 3, the second upper water chamber cover plate 4, the first lower water chamber cover plate 5, the second lower water chamber cover plate 6, and the module body 1.

[0037] Furthermore, the bottom of the first upper vacuum hole 13 runs parallel to that of the first upper water chamber 11, while the bottom of the second upper vacuum hole 14 runs parallel to that of the second upper water chamber 12; the bottom of the first lower vacuum hole 17 runs parallel to that of the first lower water chamber 15, while the bottom of the second lower vacuum hole 18 runs parallel to that of the second lower water chamber 16.

[0038] In the illustrated embodiment, the module body 1 is provided with two upper water chambers and two lower water chambers along the axial direction, and the module body 1 is provided with two upper vacuum holes and two lower vacuum holes, wherein the upper water chamber and the upper vacuum hole are positioned accordingly on the same axial side, and the lower water chamber and the lower vacuum hole are positioned accordingly on the same axial side; the two first lower water chambers 15 are connected to each other. As in Fig.As shown in Figure 7, the cooling water first enters an upper water chamber 11 and then flows into the second upper water chamber 12 on the same axial side. It then flows through the intermediate water line 19 to the second lower water chamber 16 on the same axial side, then into the first lower water chamber 15 on the same axial side, then into the first lower water chamber 15 on the opposite side, then into the second lower water chamber 16 on the same axial side as the first lower water chamber 15, then into the second upper water chamber 12 on the same axial side, and finally into the first upper water chamber 11 on the same axial side, and flows out of the first upper water chamber 11.

[0039] In accordance with the direction of water flow, the two first upper water chambers 11 are each connected to a water inlet and outlet port 7. One water inlet and outlet port 7 serves as the water inlet port, while the other serves as the water outlet port. These water inlet and outlet ports 7 are attached to the corresponding first upper water chamber cover plates 3.

[0040] The module body 1 is rigidly connected to a module pressure plate 2, the module pressure plate 2 being provided with a vacuum channel 21, the vacuum channel 21 being connected to the second upper vacuum hole 14 and to the second lower vacuum hole 18. A vacuum slot is formed on the cavity surface of the module body 1, the vacuum slot being connected to the upper vacuum hole and the lower vacuum hole via an air intake groove, the upper vacuum hole and the lower vacuum hole being connected to the vacuum channel 21 and thus forming a sealed vacuum system, the vacuum system being connected to a pump vacuum system to draw the blank onto the cavity surface of the module body 1.

[0041] Module body 1 is manufactured from aluminum alloy 6061, a high-quality aluminum alloy produced through a heat treatment and pre-stretching process. The primary alloying elements in aluminum alloy 6061 are magnesium and silicon, forming the Mg₂Si phase. This alloy exhibits excellent thermal conductivity and high heat exchange efficiency, good machinability, and high toughness without deformation after machining. Its material is dense and defect-free, easily polished and colored, and exhibits excellent oxidation resistance, among other properties, offering slightly higher strength than cast aluminum.

[0042] The individual water chamber cover plates are made of 304 stainless steel. In combination with stainless steel bolts and sealing rings, they achieve a water pressure of 0.3 to 0.5 MPa without leakage.

[0043] The foregoing descriptions represent exemplary embodiments of the present utility model. All details not described in more detail are known to those skilled in the art. The scope of protection of the present utility model is determined by the content of the claims. All equivalent modifications based on the technical teachings of the present utility model also fall within the scope of protection of the present utility model.

Claims

[1] Composite forming module for double-walled corrugated pipe with water flow, characterized by , that it comprises two module bodies used in pairs, wherein the two module bodies are symmetrical; the module body is provided with an upper vacuum hole and a lower vacuum hole that are interconnected, as well as an upper water chamber and a lower water chamber that are interconnected, wherein the upper water chamber is located on the outside of the upper vacuum hole and the lower water chamber is located on the outside of the lower vacuum hole, the upper vacuum holes of the two module bodies are interconnected, and the lower vacuum holes of the two module bodies are interconnected; The module body is provided with an upper water chamber cover plate that seals the upper water chamber and a lower water chamber cover plate that seals the lower water chamber, wherein the upper water chamber cover plate and the lower water chamber cover plate are each connected to the module body by bolts. [2] Composite forming module for double-walled corrugated pipe with water flow according to claim 1, characterized by , that the upper vacuum hole is divided into a first upper vacuum hole and a second upper vacuum hole, which are connected to each other, while the lower vacuum hole is divided into a first lower vacuum hole and a second lower vacuum hole, which are connected to each other. [3] Composite forming module for double-walled corrugated pipe with water flow according to claim 2, characterized by, that the upper water chamber is divided into a first upper water chamber and a second upper water chamber, which are connected to each other, with the first upper water chamber being located on the outside of the first upper vacuum hole, while the second upper water chamber is located on the outside of the second upper vacuum hole; the lower water chamber is divided into a first lower water chamber and a second lower water chamber, which are connected to each other, with the first lower water chamber being located on the outside of the first lower vacuum hole, while the second lower water chamber is located on the outside of the second lower vacuum hole; the second upper vacuum hole and the second lower vacuum hole are connected to each other, and the second upper water chamber and the second lower water chamber are connected to each other; the upper water chamber cover is divided into a first upper water chamber cover plate, which seals the first upper water chamber, and a second upper water chamber cover plate, which seals the second upper water chamber, and the lower water chamber cover plate is divided into a first lower water chamber cover plate, which seals the first lower water chamber, and a second lower water chamber cover plate, which seals the second lower water chamber. is divided. [4] Composite forming module for double-walled corrugated pipe with water flow according to claim 3, characterized by, that the bottom of the first upper vacuum hole runs parallel to that of the first upper water chamber, while the bottom of the second upper vacuum hole runs parallel to that of the second upper water chamber; the bottom of the first lower vacuum hole runs parallel to that of the first lower water chamber, while the bottom of the second lower vacuum hole runs parallel to that of the second lower water chamber. [5] Composite forming module for double-walled corrugated pipe with water flow according to claim 3, characterized by , that the module body is provided with two upper water chambers and two lower water chambers along the axial direction, and that the module body is provided with two upper vacuum holes and two lower vacuum holes; that the two upper vacuum holes are connected to each other on the same axial side; that the two first lower water chambers are connected to each other. [6] Composite forming module for double-walled corrugated pipe with water flow according to claim 5, characterized by that the first two upper water chambers are each connected to a water inlet and outlet connection. [7] Composite forming module for double-walled corrugated pipe with water flow according to claim 6, characterized by that the water inlet and outlet connections are provided on the first upper water chamber cover plates. [8] Composite forming module for double-walled corrugated pipe with water flow according to claim 3, characterized by that the module body is firmly connected to a module pressure plate, wherein the module pressure plate is provided with a vacuum channel, the vacuum channel being connected to the second lower vacuum hole. [9] Composite forming module for double-walled corrugated pipe with water flow according to claim 3, characterized by, that a sealing ring is provided between the first upper water chamber cover plate, the second upper water chamber cover plate, the first lower water chamber cover plate, and the second lower water chamber cover plate and the module body.

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