A combined structure for connecting pipes in an industrial building water tank
By combining flexible sleeves and flexible corrugated pipes with a double-layer rubber ring design, the problem of water leakage caused by displacement and deformation in pipe connections is solved, achieving a longer sealing life and earthquake-resistant and waterproof effect, and simplifying the construction and maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ENERGY ENG GRP SHANXI ELECTRIC POWER CONSTR NO 3 CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-05-26
AI Technical Summary
Existing flexible sleeves have problems in pipe connections, such as separation and leakage due to the lack of a displacement guiding structure, seepage due to uneven sealing, and short waterproof life due to large deformation of a single structure.
It adopts a combination structure of flexible sleeve and flexible bellows, combined with a double-layer rubber ring design. The flexible sleeve adapts to axial and radial displacement, while the flexible bellows can handle large displacement. The sealing ring is made of gradient modulus composite material to enhance the sealing effect, and the flange connection enables convenient maintenance.
It improves the seismic and waterproof performance of pipelines, extends the sealing life to 10-15 years, reduces the impact of environmental factors, simplifies the construction process, facilitates later maintenance, and improves service life and economy.
Smart Images
Figure CN224283748U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a combined structure for connecting pipes in industrial building water tanks, belonging to the field of industrial pipe installation technology. Background Technology
[0002] Flexible sleeve waterproofing devices are widely used in building (through-wall pipes), municipal engineering (underground pipe corridors), power (cable protection, water tanks), petrochemical (pipeline sealing) and other fields. They are required to deal with problems such as water leakage, corrosion and foundation settlement in the long term, and are especially widely used in the connection of various pipes that pass through the walls of water tanks.
[0003] Currently, existing wall sleeves generally have the following defects: traditional flexible sleeves have no displacement guiding structure, and the rubber and metal joints are prone to separation and leakage under long-term tension; the radial seal of the single-layer rubber ring in the flexible sleeve relies on bolt fastening, and local leakage occurs when the pressure is uneven, and permanent deformation due to compression can cause water seepage; when using flexible sleeves alone, the deformation at the sleeve is large and the frequency of deformation response is high, the waterproof guarantee is singular, and the waterproof life is short. Utility Model Content
[0004] To address the technical problems existing in the prior art, this utility model provides an industrial building water tank pipeline connection combination structure that can adapt to axial and radial composite displacement, improve the seismic and waterproof effect of pipelines, and facilitates later maintenance and replacement.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is a combined structure for connecting pipes in an industrial building water tank, including a flexible sleeve pre-embedded in the tank wall, a water-stop ring provided on the flexible sleeve, an annular support plate installed at one end of the flexible sleeve, and a flange connecting plate installed at the other end. A connecting steel pipe is installed inside the flexible sleeve, with one end of the connecting steel pipe installed inside the annular support plate and a sealing limiting ring installed at the other end. A sealing sleeve is installed on the flange connecting plate and fitted onto the connecting steel pipe. A flange ring plate is provided on the sealing sleeve, and the flange ring plate and the flange connecting plate are connected and fixed. A sealing ring is provided between the sealing sleeve and the sealing limiting ring. A flexible corrugated pipe is also connected to the connecting steel pipe via a flange.
[0006] Preferably, the sealing ring has a double-layer sealing ring structure, with an inner layer of highly elastic silicone rubber and an outer layer of highly wear-resistant polyurethane rubber.
[0007] Preferably, a gap is reserved between the sealing limiting ring and the flexible sleeve.
[0008] Compared with existing technologies, this utility model has the following technical advantages: The combined structure of flexible sleeve and flexible corrugated pipe can adapt to axial and radial composite displacements. The flexible corrugated pipe handles large displacements, while the flexible sleeve handles micro-vibrations. Simultaneously, a double-layer rubber ring structure is adopted, using gradient modulus composite material to improve waterproofing and service life. By adding corrugated pipe, the axial displacement compensation of traditional flexible sleeves can be improved from ±10mm to ±50mm, the sealing life from 5-8 years to 10-15 years, and the installation time from 2 hours to 1.5 hours after combination. Furthermore, this combined structure is simple, easy to process and manufacture on-site, and convenient for later maintenance and replacement. It significantly improves the seismic and waterproof quality of pipelines, reduces the impact of various complex environmental factors such as vibration, settlement, and shrinkage, extends service life, is easy to construct and replace, is economical and practical, and has high promotional value. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0010] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0011] like Figure 1 As shown, an industrial building water tank pipeline connection assembly structure includes a flexible sleeve 1 pre-embedded in the water tank wall, a water-stop ring 2 provided on the flexible sleeve 1, an annular support plate 3 installed at one end of the flexible sleeve 1, and a flange connecting plate 4 installed at the other end. A connecting steel pipe 5 is installed inside the flexible sleeve 1, with one end of the connecting steel pipe 5 installed inside the annular support plate 3 and a sealing limiting ring 7 installed at the other end. A sealing sleeve 8 is installed on the flange connecting plate 4 and fitted onto the connecting steel pipe 5. A flange ring plate 9 is provided on the sealing sleeve 8, and the flange ring plate 9 and the flange connecting plate 4 are connected and fixed. A sealing ring 10 is provided between the sealing sleeve 8 and the sealing limiting ring 7. A flexible corrugated pipe 6 is also connected to the connecting steel pipe 5 through a flange.
[0012] This utility model utilizes a circulating water pump in a pump house to connect the pump house and the circulating water tank via a connecting steel pipe 5 for water system operation. Simultaneously, the connecting steel pipe 5 is installed on the tank wall via a flexible sleeve 1, with the other end connected to a water supply pipeline via a flexible corrugated pipe 6. The combined structure of the flexible sleeve 1 and the flexible corrugated pipe 6 effectively counteracts expansion and contraction, settlement, and prevents leakage. During tank construction, the flexible sleeve 1 can be pre-embedded in the concrete tank wall, with a water-stop ring 2 placed on it. After the tank wall concrete is poured, it forms a complete integral with the tank wall. The connecting steel pipe 5 is installed inside the flexible sleeve 1, and a sealing limiting ring 7 is installed on the connecting steel pipe 5. A gap is reserved between the sealing limiting ring 7 and the flexible sleeve 1, and a sealing ring 10 is placed between the flexible sleeve 1 and the connecting steel pipe 5. The sealing sleeve 8 compresses the sealing ring 10, completely sealing the gap between the flexible sleeve 1 and the connecting steel pipe 5. The sealing ring 10 adopts a double-layer rubber ring structure. The inner layer uses a high-elasticity silicone rubber ring, and the outer layer uses a high-wear-resistant polyurethane rubber ring. The rubber rings use a gradient modulus composite material. The double-layer rubber ring separates the sleeve from the water pipe, which can better handle micro-vibrations. This constitutes the working mechanism of the flexible sleeve section. At the same time, it can improve the service life of the flexible sleeve in the water tank, improve the seismic and waterproof effect, and increase the dynamic compensation for pipe expansion and contraction. The flexible corrugated pipe 6 and the connecting steel pipe 5 are connected by a flange mechanical seal, which facilitates the replacement of pipes later. When the device vibrates, the corrugated pipe section can cope with large displacements, while the flexible sleeve can cope with small displacements. The double barrier of the flexible sleeve section and the corrugated pipe section works together to achieve the best seismic and waterproof effect, increase the service life, simplify construction, and facilitate future maintenance and replacement.
[0013] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall be included within the scope of the present utility model.
Claims
1. A pipe connection assembly structure for an industrial building water tank, characterized in that: The system includes a flexible sleeve embedded in the wall of a water tank. A water-stop ring is installed on the flexible sleeve. An annular support plate is installed at one end of the flexible sleeve, and a flange connecting plate is installed at the other end. A connecting steel pipe is installed inside the flexible sleeve. One end of the connecting steel pipe is installed inside the annular support plate, and a sealing limiting ring is installed at the other end. A sealing sleeve is installed on the flange connecting plate and fitted onto the connecting steel pipe. A flange ring plate is installed on the sealing sleeve, and the flange ring plate and the flange connecting plate are connected and fixed. A sealing ring is provided between the sealing sleeve and the sealing limiting ring. A flexible corrugated pipe is also connected to the connecting steel pipe via a flange. The sealing ring has a double-layer sealing ring structure, with an inner silicone rubber high-elasticity rubber ring and an outer polyurethane high-wear-resistant rubber ring. A gap is reserved between the sealing limiting ring and the flexible sleeve.