Structure for leaking stoppage after water cooler leaks

Abstract

The utility model discloses a structure for leaking stoppage after leakage of a water cooler, which comprises a tube plate and a tube bundle, the tube plate is provided with a tube hole, the end part of the tube bundle is inserted into the tube hole and is welded with the tube hole, and the structure also comprises a sealing assembly and an epoxy resin adhesive layer; the sealing assembly comprises a sleeve and an annular end cover which are integrally formed, and one end of the sleeve is fixed to the surface of the middle of the annular end cover. Epoxy resin glue layers are arranged on the adjacent upper surfaces of the sleeve and the annular end cover, the adjacent upper surfaces of the sleeve and the annular end cover are correspondingly bonded with the inner surface of the tube bundle and the outer side surface of the tube plate through the epoxy resin glue layers respectively, and the circumferential surface of the annular end cover is welded to the outer side surface of the tube plate. Leaking stoppage can be conducted when leakage occurs at the welding positions of the tube plate and the two ends of the tube bundle; the heat exchange area of water cooler equipment cannot be reduced after leaking stoppage, the original heat exchange effect can still be achieved after leaking stoppage, the stability of a water system is improved, the maintenance frequency of the equipment is reduced, and the maintenance cost of the equipment is reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of heat exchange, in particular to a structure for plugging leakage of a water cooler. Background technology:

[0002] The water cooler is a type of heat exchanger and is an essential device in the use of the existing cooling water circulation system. It includes: tube sheet and tube bundle; the tube sheet is a round steel plate with holes slightly larger than the outer diameter of the tube drilled on it. It is a round steel that plays the role of fixing the tube bundle and sealing the medium in the heat exchanger. The tube bundle and the tube sheet are mostly connected by first inserting the tube bundle into the through hole on the tube sheet and then assembling them by welding. The structure is simple and the cost is low.

[0003] However, during current use, due to the poor welding quality, cracks, sand holes, fractures and other defects often occur at the welding places of the tube sheets and the two ends of the tube bundles, leading to leakage, resulting in an increase in the water replenishment amount of the circulating water system; at this time, the machine needs to be shut down for maintenance, resulting in the inability to adjust the water replenishment amount and water supply temperature of the water system, affecting the normal production and operation of other devices.

[0004] The existing solutions and technical defects for tube bundle leakage are: most of them are to seal and plug leaks at both ends of the tube bundle to ensure the continued operation of the water cooler, but this treatment method will reduce the heat exchange area of ​​the water cooler equipment, thereby increasing the working pressure of the circulating water. After plugging the leak, the number of water cooler equipment must be increased to achieve the original heat exchange effect, which will increase the investment cost of the enterprise.

[0005] To this end, the present application intends to propose a technical solution for plugging leaks only when leaks occur at the welding locations at both ends of the tube sheet and the tube bundle. Utility model content:

[0006] The utility model aims to provide a structure for plugging leakage of a water cooler to solve the problems raised in the above-mentioned background technology.

[0007] The utility model is implemented by the following technical solutions:

[0008] A structure for plugging a leak in a water cooler comprises: a tube sheet and a tube bundle, wherein the tube sheet is provided with tube holes, and the ends of the tube bundle are inserted into the tube holes and welded, and further comprises a sealing component and an epoxy resin adhesive layer; the sealing component comprises an integrally formed sleeve and an annular end cover, and one end of the sleeve is fixed to the middle surface of the annular end cover; an epoxy resin adhesive layer is provided on the adjacent upper surfaces between the sleeve and the annular end cover, and the adjacent upper surfaces between the sleeve and the annular end cover correspond to the inner surface of the tube bundle and the outer surface of the tube sheet respectively and are bonded through the epoxy resin adhesive layer, and the circumferential surface on the annular end cover is welded to the outer surface of the tube sheet.

[0009] Preferably, the sealing assembly further comprises a sealing ring; an annular groove is also formed on the upper surface of one end of the sleeve close to the annular end cover, and the inner part of the sealing ring is embedded in the annular groove.

[0010] Preferably, an annular groove is provided on the inner surface of the edge of the end of the tube bundle, and the cross section of one side of the annular groove is in a "V" shape.

[0011] Preferably, the shape of the outer portion of the sealing ring matches the annular groove, and the outer portion of the sealing ring is inserted into the annular groove.

[0012] The utility model has the advantages that when cracks, sand holes, fractures and other defects occur at the welding places of the tube sheet and the two ends of the tube bundle, leaks can be quickly plugged; after plugging the leak, the heat exchange area of ​​the water cooler equipment will not be reduced, and the working pressure of the circulating water is reduced; after plugging the leak, the original heat exchange effect can still be achieved, the stability of the water system is improved, the maintenance frequency of the equipment is reduced, and the equipment maintenance cost is reduced. Description of the drawings:

[0013] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0014] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the sealing assembly structure of the first embodiment;

[0016] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0017] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0018] Figure 6 It is a partial structural schematic diagram of the sealing assembly of the second embodiment;

[0019] Figure 7 This is a schematic diagram of the sealing ring structure of Example 2.

[0020] In the figure: 1. tube sheet, 2. tube bundle, 2.1. annular groove, 3. sealing assembly, 3.1. sleeve, 3.11. annular groove, 3.2. annular end cover, 3.3. sealing ring, 4. epoxy resin adhesive layer. Specific implementation method:

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a structural technical solution for plugging the leak after a water cooler leaks:

[0023] Embodiment 1

[0024] See also Figure 1-3 A structure for plugging a leak in a water cooler comprises: a tube sheet 1 and a tube bundle 2, wherein the tube sheet 1 is provided with a tube hole, and the end of the tube bundle 2 is inserted into the tube hole and welded, and further comprises a sealing assembly 3 and an epoxy resin adhesive layer 4; the sealing assembly 3 comprises an integrally formed sleeve 3.1 and an annular end cover 3.2, wherein one end of the sleeve 3.1 is fixed to the middle surface of the annular end cover 3.2; an epoxy resin adhesive layer 4 is provided on the adjacent upper surfaces between the sleeve 3.1 and the annular end cover 3.2, and the adjacent upper surfaces between the sleeve 3.1 and the annular end cover 3.2 correspond to the inner surface of the tube bundle 2 and the outer surface of the tube sheet 1 respectively and are bonded through the epoxy resin adhesive layer 4, and the circumferential surface on the annular end cover 3.2 is welded to the outer surface of the tube sheet 1.

[0025] The working principle of the first embodiment is as follows: when cracks, sand holes, fractures and other defects occur at the welding places at both ends of the tube sheet 1 and the tube bundle 2, causing leakage, the outer surface of the tube sheet 1 and the inner surface of the end of the tube bundle 2 are first cleaned, and the epoxy resin adhesive layer 4 is evenly applied to the adjacent upper surface between the sleeve 3.1 and the annular end cover 3.2, and then immediately inserted into the tube bundle 2, so that the adjacent upper surfaces between the sleeve 3.1 and the annular end cover 3.2 correspond to the inner surface of the tube bundle 2 and the outer surface of the tube sheet 1, respectively, and then stand for eight hours to wait for the epoxy resin adhesive layer 4 to solidify. After solidification, the sealing assembly 3 makes the welding places at both ends of the tube sheet 1 and the tube bundle 2 no longer leak. The structure is simple and the cost is low, and the heat exchange area of ​​the water cooler equipment will not be reduced, and the working pressure of the circulating water is reduced; after the leak is plugged, the original heat exchange effect can still be achieved, the stability of the water system is improved, the maintenance frequency of the equipment is reduced, and the maintenance cost of the equipment is reduced.

[0026] Embodiment 2

[0027] See also Figure 4-7Compared with the first embodiment, the overall structure of the second embodiment is basically the same. The difference between the two is that the sealing assembly 3 includes an integrally formed sleeve 3.1, an annular end cover 3.2 and a sealing ring 3.3; the upper surface of the sleeve 3.1 near the annular end cover 3.2 is also provided with an annular groove 3.11, and the inner part of the sealing ring 3.3 is embedded in the annular groove 3.11. The inner surface of the end edge of the tube bundle 2 is provided with an annular groove 2.1, and the cross-section of one side of the annular groove 2.1 is "V" shaped. The sealing ring 3.3 is made of rubber material and has a certain deformation ability. The outer part of the sealing ring 3.3 is consistent with the shape of the annular groove 2.1, and the outer part of the sealing ring 3.3 is inserted into the annular groove 2.1, in order to increase the overall stability of the sealing assembly 3.

[0028] The working principle of the second embodiment is as follows: when cracks, sand holes, fractures and other defects occur at the welding places of the two ends of the tube sheet 1 and the tube bundle 2, causing leakage, the outer surface of the tube sheet 1 and the inner surface of the end of the tube bundle 2 are first cleaned, and an annular groove 2.1 with a relatively thin depth relative to the tube wall is grinded on the inner surface of the end of the tube bundle by a grinding tool, and then the inner part of the sealing ring 3.3 is embedded in the annular groove 3.11, and the epoxy resin layer 4 is evenly applied to the adjacent upper surfaces between the sleeve 3.1 and the annular end cover 3.2, and then immediately inserted into the tube bundle 2. At this time, the outer side of the sealing ring 3.3 The sealing assembly 3 is partially inserted into the annular groove 2.1, and the adjacent upper surfaces of the sleeve 3.1 and the annular end cover 3.2 correspond to the inner surface of the tube bundle 2 and the outer surface of the tube sheet 1, and then it is left to stand for eight hours to wait for the epoxy resin adhesive layer 4 to solidify. After solidification, the sealing assembly 3 makes the welding places at both ends of the tube sheet 1 and the tube bundle 2 no longer leak. The structure is simple and the cost is low. The heat exchange area of ​​the water cooler equipment will not be reduced, and the working pressure of the circulating water is reduced. After the leak is plugged, the original heat exchange effect can still be achieved, the stability of the water system is improved, the maintenance frequency of the equipment is reduced, and the equipment maintenance cost is reduced.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for plugging a leak in a water cooler, comprising: A tube sheet (1) and a tube bundle (2), wherein a tube hole is formed on the tube sheet (1), and the end of the tube bundle (2) is inserted into the tube hole and welded, and is characterized in that: it also includes a sealing component (3) and an epoxy resin adhesive layer (4); the sealing component (3) includes an integrally formed sleeve (3.1) and an annular end cover (3.2), and one end of the sleeve (3.1) is fixed to the middle surface of the annular end cover (3.2); the adjacent upper surfaces between the sleeve (3.1) and the annular end cover (3.2) are provided with an epoxy resin adhesive layer (4), and the adjacent upper surfaces between the sleeve (3.1) and the annular end cover (3.2) correspond to the inner surface of the tube bundle (2) and the outer surface of the tube sheet (1) respectively and are bonded through the epoxy resin adhesive layer (4), and the circumferential surface on the annular end cover (3.2) is welded to the outer surface of the tube sheet (1).

2. The structure for plugging a leak in a water cooler according to claim 1, characterized in that: The sealing assembly (3) further comprises a sealing ring (3.3); an annular groove (3.11) is formed on the upper surface of one end of the sleeve (3.1) close to the annular end cover (3.2), and the inner part of the sealing ring (3.3) is embedded in the annular groove (3.11).

3. The structure for plugging a leak in a water cooler according to claim 2, characterized in that: An annular groove (2.1) is provided on the inner surface of the end edge of the tube bundle (2), and a cross section of one side of the annular groove (2.1) is in a "V" shape.

4. The structure for plugging a leak in a water cooler according to claim 3, characterized in that: The shape of the outer portion of the sealing ring (3.3) matches the annular groove (2.1), and the outer portion of the sealing ring (3.3) is inserted into the annular groove (2.1).

Images