A through-wall pipe connection structure and a construction method thereof

Abstract

The application discloses a kind of wall pipe connecting structures, including wall pipe, sleeve, wall and sealing element;The outer portion of the wall pipe is equipped with sleeve, and both coaxial configurations;The sleeve passes through the through hole on wall and is opened, and mud is sealed and fixed between sleeve outer wall and wall;Two groups of sealing rings are arranged in the sleeve, and air bag is installed between two sealing rings and wall pipe, and air bag compresses the outer wall of wall pipe;Gap between air bag and sleeve inner wall is filled with foaming agent;Sealing element is respectively installed in the sleeve of the outer end of two sealing rings, and the inner ring of sealing element is attached with the outer wall of wall pipe, and the outer ring of sealing element is attached with the inner wall of sleeve.The application further discloses a kind of wall pipe connecting structure construction method.The beneficial effects of the application are that: the application provides double protection for the design of first sealing structure and second sealing structure, improves sealing performance, improves waterproof effect, and reduces water seepage hazards.

Description

Technical Field

[0001] This invention relates to the field of pipeline installation technology, specifically to a through-wall pipeline connection structure and its construction method. Background Technology

[0002] With the rapid development of the social economy and the continuous increase in urban population, the usable space of urban buildings has been further expanded. In terms of building design, pipes are often centrally located, requiring pipes to pass directly through floors, roofs, or walls. In this case, the installation of waterproof sleeves is one of the key technologies to ensure the quality of drainage projects.

[0003] The conventional sealing method for waterproof sleeve installation involves filling the pipes with expanding foam after installation on the exterior wall, followed by sealing with waterproof mortar. However, due to the limited bonding strength between the expanding foam and the pipes, the expanding foam can easily detach under the lateral pressure of the backfill soil in the basement exterior wall, resulting in poor sealing performance and a potential risk of water seepage from the side walls of the pipes in the basement exterior wall. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a wall-penetrating pipe connection structure and its construction method, aiming to improve sealing performance.

[0005] The technical solution adopted in this invention is: a wall-penetrating pipe connection structure, including a wall-penetrating pipe, a sleeve, a wall, and a sealing element;

[0006] The wall-penetrating pipe is provided with a sleeve on the outside, and the two are coaxially configured; the sleeve passes through a through hole opened in the wall, and the outer wall of the sleeve is sealed and fixed to the wall with mud.

[0007] The sleeve is provided with two sets of sealing rings, and an airbag is installed between the two sealing rings and the through-wall pipe. The airbag presses against the outer wall of the through-wall pipe. The gap between the airbag and the inner wall of the sleeve is filled with foaming agent.

[0008] Seals are installed inside the sleeves at the outer ends of the two sealing rings. The inner ring of the seal fits against the outer wall of the pipe through the wall, and the outer ring of the seal fits against the inner wall of the sleeve.

[0009] According to the above scheme, there is a gap between the inner ring of the sealing ring and the outer wall of the through-wall pipe; the inner ring of the sealing element extends axially to form a cylinder, which is inserted through the gap between the sealing element and the through-wall pipe and contacts the airbag.

[0010] According to the above scheme, the airbag is divided into two chambers, a left chamber and a right chamber, by adhesive 52. Each chamber contains a solution, and the two solutions react to produce gas after mixing.

[0011] According to the above scheme, when the airbag is compressed, the solution in the two chambers will expand the adhesive, forming a connected inner cavity inside the airbag. The two solutions mix and react to generate gas, which expands and inflates the airbag, allowing it to fit and support the gap between the sleeve and the seal.

[0012] According to the above scheme, the foaming agent is wrapped by a membrane layer. After the membrane layer is ruptured, the foaming agent foams and sticks between the airbag and the sleeve.

[0013] According to the above scheme, a groove is provided on the outer end face of the sealing ring, and a retaining ring adapted to the groove is provided on the inner end of the sealing element.

[0014] According to the above scheme, the two ends of the sleeve are respectively provided with a first flange; the outer end of the sealing element is provided with a second flange; the first flange and the second flange are fitted together and connected by bolts.

[0015] The present invention also provides a construction method for the through-wall pipe connection structure as described above, the method comprising the following steps:

[0016] S1. Make a through hole in the wall, insert the sleeve into the through hole, and seal and fix the outer wall of the sleeve to the wall.

[0017] S2. Foaming agent is placed on the inner wall of the sleeve; then an air bag is put on the outside of the through-wall pipe, and the through-wall pipe is inserted into the sleeve, so that the air bag is placed between the two sealing rings of the sleeve; push the sealing elements on both sides so that the retaining rings of the sealing elements are embedded in the retaining grooves of the sealing rings to form the first sealing structure.

[0018] S3. The sealing element is pushed into the sleeve, and the cylinder of the sealing element on both sides squeezes the airbag, so that the solution in the two chambers of the airbag opens the adhesive, and the inside of the airbag forms a connected inner cavity. The two solutions mix and react to generate gas, which expands and inflates the airbag, so that the airbag fits and supports the gap between the sleeve and the sealing element.

[0019] S4. After the airbag inflates, the film layer encapsulating the foaming agent rubs and tears against the inner wall of the sleeve, and the foaming agent foams and sticks between the airbag and the sleeve, forming a second sealing structure.

[0020] According to the above scheme, in S2, the foaming agent is wrapped by a film layer; the foaming agent is polyurethane foam.

[0021] According to the above scheme, in S4, after the airbag inflates, the film layer encapsulating the foaming agent tears due to friction with the inner wall of the sleeve, causing the foaming agent to foam.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. In this invention, the retaining ring of the sealing element is embedded in the groove of the sealing ring to form a first sealing structure, and the foaming agent foams and adheres between the airbag and the sleeve to form a second sealing structure. The design of the first and second sealing structures provides a double-layer protection, improving sealing performance, enhancing waterproofing, and reducing the risk of water leakage. 2. In the second sealing structure of this invention, the airbag expands under pressure, generating internal gas that inflates the airbag, supporting and compressing the foaming agent. This effectively prevents the foaming agent from falling off under lateral pressure from the backfill soil of the basement exterior wall, ensuring a good seal. Furthermore, the airbag provides a certain degree of support and buffering, improving the overall stability and seismic resistance of the entire structure. 3. In this invention, the sealing element and the sleeve are fitted together, facilitating the installation of the structure inside the sleeve. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a specific embodiment of the present invention.

[0025] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle.

[0026] Figure 3 This is a schematic diagram of the sleeve body structure of the present invention.

[0027] Figure 4 For the present invention Figure 3 Enlarged view of section B in the middle.

[0028] Figure 5 This is a schematic diagram of the sealing element structure of the present invention.

[0029] Figure 6 For the present invention Figure 5 Enlarged view of point C.

[0030] Figure 7 This is a cross-sectional view of the airbag of the present invention when it is not inflated.

[0031] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle.

[0032] In the diagram: 1. Wall; 2. Sleeve; 21. Sealing ring; 22. Groove; 23. First flange; 3. Through-wall pipe; 4. Seal; 41. Cylinder; 42. Snap ring; 43. Second flange; 5. Airbag; 51. Inner cavity; 52. Adhesive; 6. Foaming agent. Detailed Implementation

[0033] To better understand the present invention, it will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1-4The wall-penetrating pipe connection structure shown is specifically a sealed connection structure between a wall-penetrating pipe and a wall, including a wall-penetrating pipe 3, a sleeve 2, a wall, and a sealing element 4;

[0035] The wall-penetrating pipe 3 is provided with a sleeve 2 on the outside, and the two are coaxially configured; the sleeve 2 passes through a through hole opened in the wall, and the outer wall of the sleeve 2 is sealed and fixed to the wall with mud.

[0036] Two sealing rings 21 are spaced apart inside the sleeve 2. An airbag 5 is installed between the two sealing rings 21 and the through-wall pipe 3. The airbag 5 presses against the outer wall of the through-wall pipe 3. The gap between the airbag 5 and the inner wall of the sleeve 2 is filled with foaming agent 6.

[0037] Seals 4 are installed in the sleeves 2 at the outer ends of the two sealing rings 21 respectively. The inner ring of the seal 4 is in contact with the outer wall of the through pipe 3, and the outer ring of the seal 4 is in contact with the inner wall of the sleeve 2.

[0038] Preferably, a gap is left between the inner ring of the sealing ring 21 and the outer wall of the through-wall pipe 3; the inner ring of the sealing member 4 extends axially to form a cylinder 41, which penetrates through the gap between the sealing member 4 and the through-wall pipe 3 and contacts the airbag 5, such as... Figure 2 As shown.

[0039] In this invention, in the initial state, such as Figure 7 and Figure 8 As shown, the airbag 5 is divided into two chambers, a left chamber and a right chamber, by adhesive 52. Each chamber contains a solution, and the two solutions react to produce gas. When the airbag 5 is compressed, the solutions in the two chambers expand the adhesive 52, forming a connected inner cavity 51 inside the airbag 5. The two solutions mix and react to generate gas, which quickly expands and inflates the airbag 5, allowing the airbag 5 to fit and support the gap between the sleeve 2 and the seal 4.

[0040] In this invention, the two solutions are a sodium carbonate solution and a dilute hydrochloric acid melt. The sodium carbonate solution and the dilute hydrochloric acid melt react to produce carbon dioxide gas. To prevent the solution from corroding the airbag 5, an anti-corrosion film (made of anti-corrosion material) is provided on the inner wall of the airbag 5, and it is elastic.

[0041] In this invention, the foaming agent 6 is initially wrapped by a film layer. After the airbag 5 is opened, the film layer is squeezed and rubbed against the inner wall of the sleeve 2. After the film layer is broken, the foaming agent 6 foams and sticks between the airbag 5 and the sleeve 2.

[0042] Preferably, a groove 22 is provided on the outer end face of the sealing ring 21 (e.g., Figure 3 and Figure 4 As shown), the inner end of the sealing member 4 is provided with a retaining ring 42 that matches the retaining groove 22, such as Figure 5 and Figure 6 As shown.

[0043] In this invention, the slot 22 is arc-shaped.

[0044] In this invention, the retaining ring 42 of the sealing member 4 is embedded in the retaining groove 22 of the sealing ring 21 to form a first sealing structure; the space between the airbag 5 and the inner wall of the sleeve 2 is filled with foaming agent 6 to form a second sealing structure.

[0045] Preferably, the outer end of the sleeve 2 is provided with a first flange 23; the outer end of the seal 4 is provided with a second flange 43; the first flange 23 and the second flange 43 are fitted together and connected by bolts.

[0046] The present invention also provides a construction method for the through-wall pipe connection structure as described above, the method being used to waterproof and seal the through-wall pipe 3 that horizontally passes through the wall; the method includes the following steps:

[0047] S1. Make a through hole in the wall, insert the sleeve 2 into the through hole, and seal it by injecting mud into the gap between the outer wall of the sleeve 2 and the wall from both sides.

[0048] S2. Foaming agent 6 is placed on the inner wall of sleeve 2; then air bag 5 is put on the outside of wall-penetrating pipe 3, and wall-penetrating pipe 3 is inserted into sleeve 2, so that air bag 5 is placed between two sealing rings 21 of sleeve 2; push the sealing element 4 on both sides so that the retaining ring 42 of sealing element 4 is embedded into the retaining groove 22 of sealing ring 21 to form the first sealing structure; and fix sealing element 4 to sleeve 2 with bolts.

[0049] S3. Initially, the airbag 5 is divided into two chambers, a left chamber and a right chamber, by adhesive. Each chamber contains a solution. When the two solutions are mixed, they react to produce gas, which inflates the airbag 5. The sealing element 4 is pushed into the sleeve 2. The cylinder 41 of the sealing element 4 on both sides compresses the airbag 5, causing the solution in the two chambers of the airbag 5 to open the adhesive 52. The airbag 5 forms a connected inner cavity 51. The two solutions mix and react to produce gas, which quickly inflates the airbag 5, allowing the airbag 5 to fit and support the gap between the sleeve 2 and the sealing element 4.

[0050] S4. After the airbag 5 inflates, the foaming agent 6 foams and adheres between the airbag 5 and the sleeve 2, forming a second sealing structure, and the sealing structure construction is completed.

[0051] In S1 of this invention, a through hole is horizontally opened in the wall and extends through both sides of the wall. The sleeve 2 passes through the through hole, and both ends of the sleeve 2 protrude from both sides of the wall. The gap between the sleeve 2 and the wall is filled with mud for fixing and sealing. That is, mud is injected into both ends of the gap between the through hole and the sleeve 2 to seal and fix the sleeve 2 to the wall.

[0052] In S2 of this invention, the foaming agent 6 is encapsulated by a film layer. After the airbag 5 is fitted over the wall-penetrating pipe 3, the wall-penetrating pipe 3 and the airbag 5 are sealed and fixed together with waterproof adhesive. The groove 22 has a concave arc cross-section, and the retaining ring 42 has a convex arc cross-section, and the retaining ring 42 mates with the groove 22. Flanges are respectively provided at both ends of the sleeve 2 and on the outer sides of the two sealing elements 4, and the second flange of the sealing element 4 is connected to the first flange of the sleeve 2 by bolts, thereby connecting and fixing the sleeve 2 and the sealing element 4.

[0053] In S3 of this invention, the cylinder 41 is disposed on the inner ring of the sealing member 4 near the sealing ring 21, and the outer diameter of the cylinder 41 is smaller than the inner diameter of the sealing ring 21, so that the cylinder 41 passes between the sealing ring 21 and the outer wall of the through-wall pipe 3. The inner wall of the airbag 5 is provided with an anti-corrosion film layer. One chamber is filled with sodium carbonate solution, and the other chamber is filled with dilute hydrochloric acid melt. After the sodium carbonate and dilute hydrochloric acid melt are mixed, they react to generate carbon dioxide gas, which inflates the airbag 5.

[0054] In S4 of this invention, the foaming agent 6 is a polyurethane foam with good waterproof properties. After the airbag 5 inflates, the film layer encapsulating the foaming agent 6 rubs and tears against the inner wall of the sleeve 2, causing the foaming agent 6 to foam and adhere between the airbag 5 and the sleeve 2, forming a second sealing structure.

[0055] The first and second sealing structures in this invention provide double protection, greatly improving the waterproofing effect and reducing the risk of water seepage. In the second sealing structure, the airbag 5 bulges upon impact, providing support and compression for the foaming agent 6, preventing the foaming agent 6 from falling off due to lateral pressure from the backfill soil of the basement exterior wall, thus affecting the sealing effect. In addition, while the sleeve 2 and the through-wall pipe 33 form a filling and sealing, they also provide a certain degree of support and buffering, improving the overall stability and seismic resistance of the sealing structure.

[0056] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0057] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A through-wall pipe connection structure, characterized in that, This includes through-wall pipes, sleeves, walls, and seals; The wall-penetrating pipe is provided with a sleeve on the outside, and the two are coaxially configured; the sleeve passes through a through hole opened in the wall, and the outer wall of the sleeve is sealed and fixed to the wall with mud. The sleeve is provided with two sets of sealing rings, and an airbag is installed between the two sealing rings and the through-wall pipe. The airbag presses against the outer wall of the through-wall pipe. The gap between the airbag and the inner wall of the sleeve is filled with foaming agent. Seals are installed in the sleeves at the outer ends of the two sealing rings respectively. The inner ring of the seal is in contact with the outer wall of the through-wall pipe, and the outer ring of the seal is in contact with the inner wall of the sleeve. A gap is left between the inner ring of the sealing ring and the outer wall of the through-wall pipe; the inner ring of the sealing element extends axially to form a cylinder, which is inserted through the gap between the sealing element and the through-wall pipe and contacts the airbag. The airbag is divided into two chambers, a left chamber and a right chamber, by adhesive. Each chamber contains a solution, and the two solutions react to produce gas when mixed. When the airbag is compressed, the solutions in the two chambers expand the adhesive, forming a connected inner cavity inside the airbag. The two solutions mix and react to generate gas, which expands and inflates the airbag, allowing it to fit and support the gap between the sleeve and the seal.

2. The through-wall pipe connection structure as described in claim 1, characterized in that, The foaming agent is wrapped in a membrane layer. After the membrane layer ruptures, the foaming agent foams and adheres between the airbag and the sleeve.

3. The through-wall pipe connection structure as described in claim 1, characterized in that, A groove is provided on the outer end face of the sealing ring, and a retaining ring adapted to the groove is provided on the inner end of the sealing element.

4. The through-wall pipe connection structure as described in claim 1, characterized in that, The sleeve is provided with a first flange at both ends; the outer end of the seal is provided with a second flange; the first flange and the second flange are fitted together and connected by bolts.

5. A construction method for a through-wall pipe connection structure as described in any one of claims 1 to 4, characterized in that, The method includes the following steps: S1. Make a through hole in the wall, insert the sleeve into the through hole, and seal and fix the outer wall of the sleeve to the wall. S2. Foaming agent is placed on the inner wall of the sleeve; then an air bag is put on the outside of the through-wall pipe, and the through-wall pipe is inserted into the sleeve, so that the air bag is placed between the two sealing rings of the sleeve; push the sealing elements on both sides so that the retaining rings of the sealing elements are embedded in the retaining grooves of the sealing rings to form the first sealing structure. S3. The sealing element is pushed into the sleeve, and the cylinder of the sealing element on both sides squeezes the airbag, so that the solution in the two chambers of the airbag opens the adhesive, and the inside of the airbag forms a connected inner cavity. The two solutions mix and react to generate gas, which expands and inflates the airbag, so that the airbag fits and supports the gap between the sleeve and the sealing element. S4. After the airbag inflates, the film layer encapsulating the foaming agent rubs and tears against the inner wall of the sleeve, and the foaming agent foams and sticks between the airbag and the sleeve, forming a second sealing structure.

6. The construction method as described in claim 5, characterized in that, In S2, the foaming agent is encapsulated by a membrane layer; the foaming agent is polyurethane foam.

7. The construction method as described in claim 5, characterized in that, In S4, after the airbag inflates, the membrane layer encapsulating the foaming agent tears due to friction with the inner wall of the cannula, causing the foaming agent to foam.

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