Heat expansion and cold contraction leakage resistant structure of valve chamber wall-penetrating PE pipeline

Abstract

The utility model discloses a kind of heat expansion and cold contraction water leakage structures of valve chamber wall-penetrating PE pipeline, it is related to pipeline engineering sealing technical field, including reinforced concrete wall, and reserved hole is set on reinforced concrete wall;Galvanized flat iron is provided in reserved hole inner wall, and PE pipeline is inserted in galvanized flat iron;Concrete support surface is inserted with screw rod by screw thread, and nut is threadedly connected after screw rod end portion passes through galvanized flat iron bottom end side wall;Rubber filling layer is arranged between PE pipeline and galvanized flat iron.The utility model uses the composite sealing structure of galvanized flat iron and rubber filling layer combination, galvanized flat iron provides reliable rigid support, effectively limits PE pipeline displacement, rubber filling layer has good elasticity and flexibility, can absorb the displacement of PE pipeline due to thermal expansion and cold contraction, avoid the gap between sealing structure and pipeline, to solve the problem of leakage under high-altitude cold mountainous wetland environment, valve chamber wall-penetrating PE pipeline due to thermal expansion and cold contraction and wetland seepage pressure.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering sealing technology, specifically to a leak-proof structure for a PE pipe that passes through a valve chamber wall and is resistant to thermal expansion and contraction. Background Technology

[0002] In high-altitude, cold, wetland environments, the sealing of PE pipes penetrating walls in valve chambers faces severe challenges. The large diurnal temperature range in this region and the low temperatures make PE pipes highly susceptible to significant thermal expansion and contraction. Simultaneously, the wetland environment features moist soil with high water content and significant seepage pressure, placing even higher demands on the sealing performance between the pipe and the wall.

[0003] Currently, existing pipe sealing structures have many shortcomings in this special environment. Traditional rigid sealing structures, such as those using only metal flanges for fixing, cannot adapt to the large deformation of PE pipes caused by temperature differences, easily leading to gaps between the sealing structure and the pipe, and thus causing leakage problems. Some flexible sealing structures, such as those using only rubber rings, can compensate for pipe deformation to some extent, but in the low-temperature environment of high-altitude, cold mountainous areas, the rubber is prone to aging and hardening, reducing its elasticity and significantly decreasing its sealing performance after long-term use. Moreover, these flexible structures lack effective rigid fixation, and under the pressure of seepage water in wetlands, they are prone to displacement, further increasing the risk of leakage.

[0004] Therefore, there is an urgent need for a valve chamber through-wall PE pipe sealing structure that can take into account both rigid fixation and flexible compensation, and can adapt to the special environment of high-altitude cold mountain wetlands, in order to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this utility model is to provide a structure for a PE pipe that passes through a valve chamber and is resistant to thermal expansion and contraction and leaks, so as to solve the problems mentioned in the background art.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a structure for preventing thermal expansion and contraction and leakage of PE pipes passing through the wall in a valve chamber, comprising a reinforced concrete wall, wherein a reserved opening is provided on the reinforced concrete wall;

[0007] The PE pipe has a galvanized flat iron installed on the inner wall of the reserved opening, and the PE pipe is inserted through the galvanized flat iron.

[0008] The reinforced concrete wall is also provided with a concrete support surface located below the reserved opening. A screw rod is threaded through the concrete support surface, and a nut is threadedly connected to the end of the screw rod after passing through the bottom side wall of the galvanized flat iron.

[0009] A rubber filler layer is provided between the PE pipe and the galvanized flat iron.

[0010] In a further embodiment, four threaded steel bars are provided in the reinforced concrete wall in the radial tangential direction of the PE pipe, and the four threaded steel bars are arranged in a cross pattern to form a rectangular structure.

[0011] In a further embodiment, the reinforced concrete wall is provided with multiple reinforcing steel bars arranged in a crisscross pattern.

[0012] The steel reinforcement skeleton consists of multiple reinforcing steel bars and four threaded steel bars.

[0013] In a further embodiment, the perimeter of the reserved opening is filled with micro-expansion concrete.

[0014] In a further embodiment, the galvanized flat iron comprises two symmetrical arc-shaped galvanized flat irons, the curvature of which matches the curvature of the outer wall of the PE pipe.

[0015] In a further embodiment, the outer surfaces of the galvanized flat iron, screw, nut, threaded steel bar, and reinforcing steel bar are all coated with a protective coating, which is an epoxy resin coating.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model adopts a composite sealing structure combining galvanized flat iron and a rubber filler layer. The galvanized flat iron provides reliable rigid support and is firmly fixed to the reinforced concrete wall by screws, effectively limiting the overall displacement of the PE pipe. The rubber filler layer has good elasticity and flexibility, which can absorb the radial and axial displacement of the PE pipe caused by thermal expansion and contraction, avoiding gaps between the sealing structure and the PE pipe, achieving a "rigid and flexible" sealing effect, and significantly improving the sealing performance. This solves the problem of water leakage caused by thermal expansion and contraction and wetland seepage pressure in the valve chamber through-wall PE pipe in high-altitude cold mountain wetland environments.

[0018] 2. The rubber filler layer is made of EPDM rubber material that is resistant to low temperatures and aging. It can adapt to the low temperature environment of cold mountainous areas at high altitudes and has a long service life, reducing maintenance costs.

[0019] 3. Applying an epoxy resin protective coating to the outer surface of galvanized flat iron, screws and nuts, and threaded steel bars improves their corrosion resistance, enabling them to adapt to the humid and corrosive conditions of wetland environments and further extending the service life of the sealing structure. Attached Figure Description

[0020] Figure 1 This is an elevation view of the main structure of an embodiment of the present utility model;

[0021] Figure 2 This is a side sectional view of the main structure of an embodiment of the present utility model.

[0022] In the diagram: 1. PE pipe; 2. Galvanized flat iron; 3. Rubber filler layer; 4. Screw; 5. Nut; 6. Threaded steel bar; 7. Steel bar cage; 8. Reserved opening; 9. Concrete support surface; 10. Reinforced concrete wall; 11. Micro-expansion concrete; 12. Reinforcing steel bar. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This embodiment provides a structure for the PE pipe 1 that penetrates the wall of the valve chamber to prevent leakage due to thermal expansion and contraction. Figure 1 and Figure 2 As shown, it includes a reinforced concrete wall 10, on which a reserved opening 8 is provided.

[0025] The PE pipe 1 has a reserved opening 8 with a galvanized flat iron 2 installed on its inner wall. The galvanized flat iron 2 is 8mm thick and 50mm wide. The PE pipe 1 is inserted into the galvanized flat iron 2. The galvanized flat iron 2 consists of two symmetrical arc-shaped galvanized flat irons 2, the curvature of which matches the curvature of the outer wall of the PE pipe 1. A rubber filler layer 3 is installed between the PE pipe 1 and the galvanized flat iron 2.

[0026] Subsequently, a concrete support surface 9 is provided on the reinforced concrete wall 10, located below the reserved opening 8. A threaded rod 4 is threaded through the concrete support surface 9, and the end of the threaded rod 4 passes through the bottom side wall of the galvanized flat iron 2 and is threadedly connected to a nut 5. Two arc-shaped galvanized flat irons are spliced ​​and fixed to the outer wall of the PE pipe 1 by four threaded rods 4. The galvanized flat iron 2 is fixed to the reinforced concrete wall 10 by four threaded rods 4, which are evenly distributed along the circumference of the galvanized flat iron 2. Their length is determined according to the thickness of the reinforced concrete wall 10, ensuring that it can be firmly anchored inside the reinforced concrete wall 10 without any loosening between the galvanized flat iron 2 and the reinforced concrete wall 10.

[0027] A composite sealing structure combining galvanized flat iron 2 and rubber filler layer 3 is adopted. The galvanized flat iron 2 provides reliable rigid support and is firmly fixed to the reinforced concrete wall 10 by bolts 4, effectively limiting the overall displacement of the PE pipe 1. The rubber filler layer 3 has good elasticity and flexibility, which can absorb the radial and axial displacement of the PE pipe 1 caused by thermal expansion and contraction, avoiding gaps between the sealing structure and the PE pipe 1, achieving a "rigid and flexible" sealing effect and significantly improving sealing performance. This solves the problem of water leakage in valve chamber through-wall PE pipes caused by thermal expansion and contraction and wetland seepage pressure in high-altitude cold mountain wetland environments.

[0028] Meanwhile, the rubber filler layer 3 is made of low-temperature resistant and aging-resistant EPDM rubber, which can adapt to the low-temperature environment of high-altitude cold mountainous areas and has a long service life, reducing maintenance costs. The rubber filler layer 3 is made of low-temperature resistant and aging-resistant EPDM rubber, with a thickness of 6mm. Its inner surface is tightly bonded to the outer wall of the PE pipe 1, and its outer surface is tightly bonded to the inner surface of the galvanized flat iron 2.

[0029] In this embodiment, furthermore, four threaded steel bars 6 are arranged in the radial tangential direction of the PE pipe 1 in the reinforced concrete wall 10, and the four threaded steel bars 6 are arranged in a rectangular structure in a crisscross pattern. 12mm diameter threaded steel bars 6 are used for reinforcement and fixation around the galvanized flat iron 2, and the perimeter of the reserved opening 8 is filled with micro-expansion concrete 11. At the same time, multiple reinforcing steel bars 12 are arranged in a crisscross pattern in the reinforced concrete wall 10, such as... Figure 1 As shown, multiple reinforcing steel bars 12 and four threaded steel bars 6 form a steel reinforcement skeleton 7, which can enhance the strength of the overall structure.

[0030] The outer surfaces of the galvanized flat iron 2, screw 4, nut 5, threaded steel bar 6, and reinforcing steel bar 12 are all coated with a protective coating made of epoxy resin. The coating is 60μm thick, which improves its corrosion resistance and enables it to adapt to the humid and corrosive conditions of wetland environments, further extending the service life of the sealing structure.

[0031] The specific installation and construction details for this design are as follows:

[0032] 1. Construction preparation: Based on the diameter of PE pipe 1 and the thickness of reinforced concrete wall 10, prefabricate galvanized flat iron 2, rubber filler layer 3, screw rod 4 and nut 5 of the corresponding specifications, roughen and clean the reserved opening 8 of reinforced concrete wall 10 to ensure that the inner wall is flat and clean.

[0033] 2. Rubber filler layer 3 installation: Evenly wrap the rubber filler layer 3 around the part of the PE pipe 1 that passes through the reinforced concrete wall 10, ensuring a tight fit without air bubbles or wrinkles.

[0034] 3. Installation of galvanized flat iron 2: Attach the two arc-shaped galvanized flat iron pieces to the outside of the rubber filler layer 3 respectively, and fix them by splicing with screw 4 and nut 5, and control the tightening force.

[0035] 4. Fixing and anchoring: Insert the assembled components into the reserved opening in the reinforced concrete wall 10, adjust the position, fix the galvanized flat iron 2 to the reinforced concrete wall 10 with screws 4, and fix it with threaded steel bars 6 around the perimeter to ensure it is firm and reliable.

[0036] 5. Protective coating application: After cleaning the outer surface of the relevant parts, apply an epoxy resin protective coating evenly and allow it to dry and cure to complete the construction.

[0037] In summary, this design features simple steps, convenient operation, and high construction efficiency. It ensures the installation quality of the sealing structure and guarantees its reliable operation in high-altitude, cold, wet mountain environments. Furthermore, the materials used, such as galvanized flat iron 2, rubber filler layer 3, and screw 4, are relatively common and inexpensive, greatly reducing usage costs.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof structure for a PE pipe (1) that penetrates a valve chamber through a wall, characterized in that, include: A reinforced concrete wall (10) is provided with a reserved opening (8). PE pipe (1), the inner wall of the reserved opening (8) is provided with galvanized flat iron (2), and the PE pipe (1) is inserted in the galvanized flat iron (2); The reinforced concrete wall (10) is also provided with a concrete support surface (9) located below the opening of the reserved opening (8). The concrete support surface (9) is threaded with a screw (4). The end of the screw (4) passes through the bottom side wall of the galvanized flat iron (2) and is threaded with a nut (5). A rubber filler layer (3) is provided between the PE pipe (1) and the galvanized flat iron (2).

2. The anti-thermal expansion and contraction leakage structure of the valve chamber through-wall PE pipe (1) according to claim 1, characterized in that, In the reinforced concrete wall (10), four threaded steel bars (6) are provided in the radial outer wall tangent direction of the PE pipe (1), and the four threaded steel bars (6) are arranged in a rectangular structure in a cross pattern.

3. The anti-thermal expansion and contraction leakage structure of the valve chamber through-wall PE pipe (1) according to claim 2, characterized in that, The reinforced concrete wall (10) is provided with multiple reinforcing steel bars (12) arranged in a crisscross pattern. Multiple reinforcing bars (12) and four threaded bars (6) form a steel reinforcement skeleton (7).

4. The anti-thermal expansion and contraction leakage structure of the valve chamber through-wall PE pipe (1) according to claim 3, characterized in that, The reserved opening (8) is filled with micro-expansion concrete (11) around its perimeter.

5. The anti-thermal expansion and contraction leakage structure of the valve chamber through-wall PE pipe (1) according to claim 1, characterized in that, The galvanized flat iron (2) comprises two symmetrical arc-shaped galvanized flat irons (2), the curvature of which matches the curvature of the outer wall of the PE pipe (1).

6. The anti-thermal expansion and contraction leakage structure of the valve chamber through-wall PE pipe (1) according to claim 3, characterized in that, The outer surfaces of the galvanized flat iron (2), screw (4), nut (5), threaded steel bar (6) and reinforcing steel bar (12) are all coated with a protective coating, which is an epoxy resin coating.

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