A sealing device for the end of a chilled water pipe

Abstract

The application relates to a frozen water pipeline end moisture-proof layer sealing device, which comprises an inner lining (1) and a jacket (2); the inner surface of the inner lining (1) is matched with the outer surface of a frozen water pipeline (3), and the inner surface of the inner lining (1) is connected to the outer surface of the frozen water pipeline (3) in a matched mode; the outer surface of the inner lining (1) is matched with the inner surface of the jacket (2), and the inner surface of the jacket (2) is connected to the outer surface of the inner lining (1) in a matched mode. The frozen water pipeline end moisture-proof layer sealing device can effectively and reliably seal the moisture-proof layer at the end of the frozen water pipeline, so that moisture cannot enter the heat insulation layer and the moisture-proof layer to form condensed water and corrode the pipeline.

Description

Technical Field

[0001] This invention relates to the field of pipeline corrosion prevention and insulation technology, and in particular to a sealing device for a moisture-proof layer at the end of a chilled water pipeline. Background Technology

[0002] Nuclear power plants employ a chilled water system specifically designed to generate cold water to displace heat from other systems. This system contains numerous chilled water pipes distributed throughout the various buildings. Because the temperature of these chilled water pipes is significantly lower than ambient temperature, insulation and moisture-proof layers are installed sequentially from the inside out to minimize heat absorption by the pipes and prevent moisture condensation on their surfaces.

[0003] In theory, insulation and moisture-proof layers should effectively retain heat and prevent moisture. However, in practice, inspections and maintenance reveal that significant amounts of ambient moisture penetrate the pipe surfaces, forming condensation. This leads to severe corrosion and coating blistering in localized areas, significantly impacting the efficiency and reliability of the chilled water system. The root cause is not that the insulation and moisture-proof layers have failed, but rather that the moisture-proof layer, installed using a binding or adhesive method at pipe end flanges, lacks proper sealing. Moisture from the environment seeps through the gaps in the moisture-proof layer at the pipe ends, condensing on the pipe surface and ultimately damaging the coating, causing corrosion. Summary of the Invention

[0004] The purpose of this invention is to provide a sealing device for the moisture-proof layer at the end of a chilled water pipe, which effectively and reliably seals the moisture-proof layer at the end of the chilled water pipe, thereby preventing moisture from entering the insulation layer and the moisture-proof layer to form condensate and corrode the pipe.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A moisture-proof sealing device for the end of a chilled water pipe includes an inner liner and a jacket; the inner surface of the inner liner matches the outer surface of the chilled water pipe and is attached to the outer surface of the chilled water pipe; the outer surface of the inner liner matches the inner surface of the jacket and is attached to the outer surface of the inner liner.

[0006] Furthermore, the lining includes an insulation ring and a sealing ring; the insulation ring is a circular ring structure; the sealing ring includes a first circular ring structure and a second circular ring structure, the ends of the first circular ring structure and the ends of the second circular ring structure are fixed by a connecting plate, the size of the first circular ring structure is smaller than that of the second circular ring structure; the outer surface of the first circular ring structure matches the inner surface of the insulation ring, and the inner surface of the insulation ring is attached to the outer surface of the first circular ring structure to form a complete circular ring structure.

[0007] Further, the insulation ring includes an upper insulation ring and a lower insulation ring, both of which are semi-circular ring structures, and their ends are fitted together to form a circular ring structure; the sealing ring includes an upper sealing ring and a lower sealing ring; both the upper and lower sealing rings include a first semi-circular ring structure, a second semi-circular ring structure, and two integrally formed connecting plates connecting the ends of the first and second semi-circular ring structures; the inner surface of the upper insulation ring and the inner surface of the lower insulation ring are respectively connected to the outer surface of the first semi-circular ring structure of the upper sealing ring and the lower sealing ring. The outer surfaces of the first semi-circular ring structure of the sealing ring are matched, the inner surface of the upper insulation ring is attached to the outer surface of the first semi-circular ring structure of the upper sealing ring, the inner surface of the lower insulation ring is attached to the outer surface of the first semi-circular ring structure of the lower sealing ring, the ends of the first semi-circular ring structure of the upper sealing ring and the first semi-circular ring structure of the lower sealing ring are attached to form a first ring structure, and the ends of the second semi-circular ring structure of the upper sealing ring and the second semi-circular ring structure of the lower sealing ring are attached to form a second ring structure, thereby making the insulation ring and the sealing ring form a complete ring structure.

[0008] Furthermore, the inner surface of the upper insulation ring is bonded to the outer surface of the first semi-circular ring structure of the upper sealing ring by a sealant, and the inner surface of the lower insulation ring is bonded to the outer surface of the first semi-circular ring structure of the lower sealing ring by a sealant.

[0009] Furthermore, each end of the upper and lower insulation rings is provided with a first limiting hole, and each connecting plate of the upper and lower sealing rings is provided with a second limiting hole. The other connecting plate of the upper and lower sealing rings is provided with a limiting pin. The limiting pins respectively match the first and second limiting holes. The inner surface of the insulation ring is attached to the outer surface of the first annular structure of the sealing ring. The first limiting hole of the upper insulation ring corresponds to the second limiting hole of the upper sealing ring, and the first limiting hole of the lower insulation ring... Corresponding to the second limiting hole of the lower sealing ring, the limiting pin of the upper sealing ring is inserted into the second limiting hole of the lower sealing ring and the first limiting hole of the lower insulation ring from top to bottom and is respectively engaged with the second limiting hole of the lower sealing ring and the first limiting hole of the lower insulation ring. The limiting pin of the lower sealing ring is inserted into the second limiting hole of the upper sealing ring and the first limiting hole of the upper insulation ring from bottom to top and is respectively engaged with the second limiting hole of the upper sealing ring and the first limiting hole of the upper insulation ring, thereby fixing the first ring structure and the second ring structure.

[0010] Furthermore, the insulation ring is made of extruded polystyrene foam insulation board, and the sealing ring is made of rubber material.

[0011] Furthermore, both the upper and lower insulation rings have grooves on their outer surfaces, and the second semi-circular ring structure has a sealing groove on its outer surface.

[0012] Furthermore, the sleeve includes an upper sleeve and a lower sleeve, both of which are semi-circular ring plates. The ends of the upper and lower sleeves are fitted together to form a circular structure. One end of the upper sleeve and one end of the lower sleeve are connected by a hinge, and the other end of the upper sleeve and the other end of the lower sleeve are connected by a male and female buckle. The inner surfaces of both the upper and lower sleeves are provided with sealing rings and protrusions. The sealing rings match the sealing grooves. When the ends of the upper and lower sleeves are fitted together to form a circular structure, the sealing rings are embedded in the sealing grooves, and the protrusions are embedded in the grooves.

[0013] Furthermore, the outer surfaces of both the upper and lower insulation rings are provided with three grooves, and the inner surfaces of both the upper and lower jackets are provided with a sealing ring and three protrusions. When the ends of the upper and lower jackets are fitted together to form a ring structure, the sealing ring protrusion of the upper jacket and the protrusion of the lower jacket form a ring of protrusions, and the three protrusions of the sealing ring of the upper jacket and the three protrusions of the lower jacket form three rings of protrusions.

[0014] Furthermore, both the upper and lower jackets are made of polypropylene.

[0015] Beneficial technical effects of the present invention: The moisture-proof sealing device at the end of the chilled water pipe of the present invention is low in cost and simple and convenient to install. The moisture-proof layer is firmly clamped by the inner lining and the jacket, and the external environment is isolated from the interior of the moisture-proof layer by the sealing ring, thereby forming a sealed space inside the moisture-proof layer. Moisture in the external environment cannot enter the moisture-proof layer. It can be widely used in pipes that have been installed with insulation and moisture-proof layers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the moisture-proof sealing device at the end of the chilled water pipe according to the present invention; Figure 2 This is a schematic diagram of the inner lining structure; Figure 3 This is a schematic diagram of the insulation ring structure; Figure 4 This is a schematic diagram of the sealing ring structure; Figure 5 This is a schematic diagram of the jacket structure; Figure 6 This is a schematic diagram illustrating the use of the moisture-proof sealing device at the end of the chilled water pipe according to the present invention.

[0017] In the diagram, 1. Lining; 2. Jacket; 3. Chilled water pipe; 4. Insulation layer; 5. Moisture-proof layer; 6. Aluminum plate protective layer; 11. Insulation ring; 12. Groove; 13. First limiting hole; 14. Sealing ring; 15. Sealing groove; 16. Second limiting hole; 17. Limiting pin; 21. Semi-circular ring clamp; 22. Female buckle; 23. Female buckle; 24. Sealing rubber ring; 25. Hinge; 26. Protrusion. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "left end", "right end", "above", "below", "inner surface", "outer surface", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] See Figure 1 This embodiment provides a moisture-proof sealing device for the end of a chilled water pipe, including an inner liner 1 and a jacket 2; the inner surface of the inner liner 1 matches the outer surface of the chilled water pipe 3, and the inner surface of the inner liner 1 is attached to the outer surface of the chilled water pipe 3; the outer surface of the inner liner 1 matches the inner surface of the jacket 2, and the inner surface of the jacket 2 is attached to the outer surface of the inner liner 1.

[0022] See Figure 2-4 In this embodiment, the inner liner 1 includes an insulation ring 11 and a sealing ring 14; the insulation ring 11 is a circular ring structure; the sealing ring 14 includes a first circular ring structure and a second circular ring structure, the ends of the first circular ring structure and the ends of the second circular ring structure are fixed by a connecting plate, the size of the first circular ring structure is smaller than that of the second circular ring structure; the outer surface of the first circular ring structure matches the inner surface of the insulation ring 11, and the inner surface of the insulation ring 11 is attached to the outer surface of the first circular ring structure to form a complete circular ring structure.

[0023] In this embodiment, the insulation ring 11 includes an upper insulation ring and a lower insulation ring, both of which are semi-circular ring structures. The ends of the upper and lower insulation rings are fitted together to form a circular ring structure. The sealing ring 14 includes an upper sealing ring and a lower sealing ring. Both the upper and lower sealing rings include a first semi-circular ring structure, a second semi-circular ring structure, and two connecting plates integrally formed to connect the ends of the first and second semi-circular ring structures. The inner surfaces of the upper and lower insulation rings are respectively connected to the outer surface of the first semi-circular ring structure of the upper sealing ring. The inner surface of the upper insulation ring is attached to the outer surface of the first semi-circular ring structure of the upper sealing ring, and the inner surface of the lower insulation ring is attached to the outer surface of the first semi-circular ring structure of the lower sealing ring. The ends of the first semi-circular ring structure of the upper sealing ring and the first semi-circular ring structure of the lower sealing ring are attached to form a first ring structure. The ends of the second semi-circular ring structure of the upper sealing ring and the second semi-circular ring structure of the lower sealing ring are attached to form a second ring structure, thereby making the insulation ring and the sealing ring form a complete ring structure.

[0024] In this embodiment, the inner surface of the upper insulation ring is bonded to the outer surface of the first semi-circular ring structure of the upper sealing ring by a sealant, and the inner surface of the lower insulation ring is bonded to the outer surface of the first semi-circular ring structure of the lower sealing ring by a sealant.

[0025] In this embodiment, each end of the upper and lower insulation rings is provided with a first limiting hole 13, and each connecting plate of the upper and lower sealing rings is provided with a second limiting hole 16. The other connecting plate of the upper and lower sealing rings is provided with a limiting pin 17. The limiting pin 17 matches the first limiting hole 13 and the second limiting hole 16 respectively. The inner surface of the insulation ring 11 is attached to the outer surface of the first annular structure of the sealing ring. The first limiting hole 13 of the upper insulation ring corresponds to the second limiting hole 16 of the upper sealing ring, and the first limiting hole 13 of the lower insulation ring... Corresponding to the second limiting hole 16 of the lower sealing ring, the limiting pin 17 of the upper sealing ring is inserted into the second limiting hole 16 of the lower sealing ring and the first limiting hole 13 of the lower insulation ring from top to bottom, and is respectively engaged with the second limiting hole 16 of the lower sealing ring and the first limiting hole 13 of the lower insulation ring. The limiting pin 17 of the lower sealing ring is inserted into the second limiting hole 16 of the upper sealing ring and the first limiting hole 13 of the upper insulation ring from bottom to top, and is respectively engaged with the second limiting hole 16 of the upper sealing ring and the first limiting hole 13 of the upper insulation ring, thereby fixing the first ring structure and the second ring structure.

[0026] In this embodiment, the insulation ring 11 is made of extruded polystyrene foam insulation board, and the sealing ring 14 is made of rubber material.

[0027] In this embodiment, the outer surfaces of both the upper and lower insulation rings are provided with grooves 12, and the outer surface of the second semi-circular ring structure is provided with a sealing groove 15.

[0028] See Figure 5 In this embodiment, the sleeve 2 includes an upper sleeve and a lower sleeve, both of which are semi-circular ring plates 21. The ends of the upper and lower sleeves are fitted together to form a ring structure. One end of the upper sleeve and one end of the lower sleeve are connected by a hinge 25, and the other end of the upper sleeve and the other end of the lower sleeve are connected by a male buckle 22 and a female buckle 23. The inner surfaces of the upper and lower sleeves are provided with sealing rings 24 and protrusions 26. The sealing rings 24 match the sealing grooves 15. When the ends of the upper and lower sleeves are fitted together to form a ring structure, the sealing rings 24 are embedded in the sealing grooves 15, and the protrusions 26 are embedded in the grooves 12.

[0029] In this embodiment, the outer surfaces of both the upper and lower insulation rings are provided with three grooves 12, and the inner surfaces of both the upper and lower jackets are provided with a sealing ring 24 and three protrusions 26. When the ends of the upper and lower jackets are fitted together to form a ring structure, the sealing ring protrusion 26 of the upper jacket and the protrusion 26 of the lower jacket form a ring of protrusions, and the three protrusions 26 of the sealing ring of the upper jacket and the three protrusions 26 of the lower jacket form three rings of protrusions.

[0030] In this embodiment, both the upper and lower jackets are made of polypropylene.

[0031] The chilled water pipe end moisture barrier sealing device of the present invention is installed at the end of the chilled water pipe and clamps the moisture barrier to form a sealed space inside the moisture barrier, thereby preventing moisture intrusion.

[0032] See Figure 6 The surface of the chilled water pipe 3 is sequentially covered from the inside out with an insulation layer 4, a moisture-proof layer 5, and an aluminum plate protective layer 6. The chilled water pipe end moisture-proof sealing device of the present invention includes the following steps: Remove the aluminum plate protective layer 6 and the moisture-proof layer 5 from the end of the chilled water pipe in sequence; Cut a ring of area on the insulation layer 4 with a blade. The width of the cut area is the width of the moisture-proof sealing device at the end of the chilled water pipe of the present invention. After cutting, the inner liner 1 is installed in the cutting area so that the inner surface of the inner liner 1 is attached to the outer surface of the connecting chilled water pipe 3. Arrange the moisture-proof layer 5 to cover the outer surface of the inner lining 1, and then trim the moisture-proof layer so that the moisture-proof layer 5 covers the three grooves 12 of the inner lining 1 but exposes the outermost sealing groove 15. The inner surface of the jacket 2 is attached to the outer surface of the liner 1, so that the sealing ring 24 is embedded in the sealing groove 15 and the protrusion 26 is embedded in the groove 12. Connect the male buckle 22 and the female buckle 23 to clamp the sleeve 2; 6. Restore the protective layer of the aluminum plate.

[0033] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A sealing device for a moisture-proof layer at the end of a chilled water pipe, characterized in that, It includes an inner liner (1) and a jacket (2); the inner surface of the inner liner (1) matches the outer surface of the chilled water pipe (3), and the inner surface of the inner liner (1) is attached to the outer surface of the chilled water pipe (3); the outer surface of the inner liner (1) matches the inner surface of the jacket (2), and the inner surface of the jacket (2) is attached to the outer surface of the inner liner (1). The liner (1) includes an insulation ring (11) and a sealing ring (14); the insulation ring (11) is a circular ring structure; the sealing ring (14) includes a first circular ring structure and a second circular ring structure, the ends of the first circular ring structure and the ends of the second circular ring structure are fixed by a connecting plate, the size of the first circular ring structure is smaller than that of the second circular ring structure; the outer surface of the first circular ring structure matches the inner surface of the insulation ring (11), and the inner surface of the insulation ring (11) is attached to the outer surface of the first circular ring structure to form a complete circular ring structure; The insulation ring (11) includes an upper insulation ring and a lower insulation ring; the sealing ring (14) includes an upper sealing ring and a lower sealing ring; both the upper and lower sealing rings include a first semi-circular ring structure, a second semi-circular ring structure, and two integrally formed connecting plates connecting the ends of the first and second semi-circular ring structures; one end of both the upper and lower insulation rings is provided with a first limiting hole (13), one connecting plate of both the upper and lower sealing rings is provided with a second limiting hole (16), and the other connecting plate of both the upper and lower sealing rings is provided with a limiting pin (17); the limiting pin (17) matches the first limiting hole (13) and the second limiting hole (16) respectively; the inner surface of the insulation ring (11) is attached to the outer surface of the first circular ring structure of the sealing ring. The first limiting hole (13) of the upper insulation ring corresponds to the second limiting hole (16) of the upper sealing ring, and the first limiting hole (13) of the lower insulation ring corresponds to the second limiting hole (16) of the lower sealing ring. The limiting pin (17) of the upper sealing ring is inserted into the second limiting hole (16) of the lower sealing ring and the first limiting hole (13) of the lower insulation ring from top to bottom and is respectively engaged with the second limiting hole (16) of the lower sealing ring and the first limiting hole (13) of the lower insulation ring. The limiting pin (17) of the lower sealing ring is inserted into the second limiting hole (16) of the upper sealing ring and the first limiting hole (13) of the upper insulation ring from bottom to top and is respectively engaged with the second limiting hole (16) of the upper sealing ring and the first limiting hole (13) of the upper insulation ring, thereby fixing the first ring structure and the second ring structure. The outer surfaces of the upper and lower insulation rings are provided with grooves (12), and the outer surface of the second semi-circular ring structure is provided with a sealing groove (15); the jacket (2) includes an upper jacket and a lower jacket, both of which are semi-circular ring plates (21), and the ends of the upper and lower jackets are fitted together to form a circular ring structure; one end of the upper jacket and one end of the lower jacket are connected by a hinge (25), and the other end of the upper jacket and the other end of the lower jacket are connected by a male buckle (22) and a female buckle (23); the inner surfaces of the upper and lower jackets are provided with sealing rings (24) and protrusions (26); the sealing rings (24) match the sealing grooves (15), and when the ends of the upper and lower jackets are fitted together to form a circular ring structure, the sealing rings (24) are embedded in the sealing grooves (15), and the protrusions (26) are embedded in the grooves (12).

2. The sealing device for the moisture-proof layer at the end of a chilled water pipe according to claim 1, characterized in that, Both the upper and lower insulation rings are semi-circular ring structures, and their ends are fitted together to form a circular ring structure. The inner surfaces of the upper and lower insulation rings respectively match the outer surfaces of the first semi-circular ring structures of the upper and lower sealing rings. The inner surface of the upper insulation ring is fitted onto the outer surface of the first semi-circular ring structure of the upper sealing ring, and the inner surface of the lower insulation ring is fitted onto the outer surface of the first semi-circular ring structure of the lower sealing ring. The ends of the first semi-circular ring structure of the upper sealing ring and the first semi-circular ring structure of the lower sealing ring are fitted together to form a first circular ring structure. The ends of the second semi-circular ring structure of the upper sealing ring and the second semi-circular ring structure of the lower sealing ring are fitted together to form a second circular ring structure, thereby making the insulation ring and the sealing ring form a complete circular ring structure.

3. The sealing device for the moisture-proof layer at the end of a chilled water pipe according to claim 1, characterized in that, The inner surface of the upper insulation ring is bonded to the outer surface of the first semi-circular ring structure of the upper sealing ring by a sealant, and the inner surface of the lower insulation ring is bonded to the outer surface of the first semi-circular ring structure of the lower sealing ring by a sealant.

4. The sealing device for the moisture-proof layer at the end of a chilled water pipe according to claim 1, characterized in that, The insulation ring (11) is made of extruded polystyrene foam insulation board, and the sealing ring (14) is made of rubber material.

5. The sealing device for the moisture-proof layer at the end of a chilled water pipe according to claim 1, characterized in that, The outer surfaces of the upper and lower insulation rings are provided with three grooves (12), and the inner surfaces of the upper and lower jackets are provided with a sealing ring (24) and three protrusions (26). When the ends of the upper and lower jackets are fitted together to form a ring structure, the sealing ring protrusion (26) of the upper jacket and the protrusion (26) of the lower jacket form a ring of protrusions, and the three protrusions (26) of the sealing ring of the upper jacket and the three protrusions (26) of the lower jacket form three rings of protrusions.

6. The sealing device for the moisture-proof layer at the end of a chilled water pipe according to claim 1, characterized in that, Both the upper and lower jackets are made of polypropylene.

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