Plugging device for heat exchange tube of indirect cooling tower

Abstract

The utility model discloses an indirect cooling tower heat exchange pipe plugging device which comprises a heat dissipation pipe fitting and further comprises a pipeline substitution unit which comprises a substitution pipe used for substituting a water leakage position of the cut-off heat dissipation pipe fitting, and a water passing hole with the same inner diameter as the heat dissipation pipe fitting is formed in the substitution pipe. The sealing unit comprises a sealing assembly and a fastening nut, wherein the sealing assembly is arranged on the outer side of the substitute pipe in a sliding and sleeving mode and used for connecting the substitute pipe and the heat dissipation pipe, and the fastening nut is arranged on the outer side of the substitute pipe and used for abutting against the sealing assembly to one end of the heat dissipation pipe. The rubber gasket is driven by the push ring to gradually abut against an opening in the cut-off position of the heat dissipation pipe fitting, the heat dissipation pipe fitting is subjected to leaking stoppage work, and in the flowing water heat dissipation process of the heat dissipation pipe fitting subjected to leaking stoppage, water flow can directly pass through the water through hole and continues to conduct heat dissipation work; therefore, the overall number of the heat dissipation pipes cannot be reduced after the heat dissipation pipes are subjected to leaking stoppage, and the heat dissipation efficiency cannot be greatly influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a leakage plugging device for heat exchange pipes of an indirect cooling tower. Background Art

[0002] At present, in order to achieve the purpose of energy saving and consumption reduction, the circulating water cooling method of newly built thermal power generating units mostly adopts an indirect air cooling system in the form of natural ventilation cooling. The heat exchanger of this system is composed of four rows of aluminum tube radiators. During operation, due to changes in ambient temperature, air or water corrosion, external force and other reasons, the heat dissipation pipes of the heat exchanger are prone to rupture and leakage. The existing technology for dealing with the leakage of the heat dissipation pipe is usually to block and isolate the leaking heat exchanger by plugging, so that the leaking heat dissipation pipe stops the water dissipation work;

[0003] However, the method of blocking the missed heat pipes and allowing water to flow through other heat pipes for heat dissipation will lead to a reduction in the overall number of heat pipes, resulting in a decrease in the water flow rate required for heat dissipation per unit time, affecting the heat dissipation efficiency of the entire radiator. Therefore, it is necessary to design a new leak-plugging device to solve this problem.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0005] The utility model aims to provide a device for plugging leaks in heat exchange tubes of an intercooler tower, so as to solve the problem in the prior art that, during the plugging process of the existing missing heat exchange tubes, the leaking heat exchange tubes are plugged as a whole so that water flows through other heat exchange tubes for heat dissipation, resulting in a reduction in the overall number of heat exchange tubes, causing a reduction in the water flow required for heat dissipation per unit time, thereby affecting the heat dissipation efficiency of the entire radiator.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A leakage plugging device for heat exchange pipes of an indirect cooling tower, comprising a heat dissipation pipe fitting, and further comprising:

[0008] A pipe replacement unit, comprising a replacement pipe for replacing the leaking part of the cut-off heat dissipation pipe, wherein the replacement pipe is provided with a water hole having an inner diameter equal to that of the heat dissipation pipe;

[0009] The sealing unit comprises a sealing assembly which is slidably sleeved on the outside of the substitute tube and used to connect the substitute tube with the heat dissipation tube, and a fastening nut which is arranged on the outside of the substitute tube and used to tighten the sealing assembly against one end of the heat dissipation tube.

[0010] Furthermore, a hexagonal piece is provided on the fixed sleeve in the middle of the outer side of the substitute tube;

[0011] Fastening threads are arranged on the outside of the replacement pipe and on both sides of the hexagonal piece, and the fastening threads are threadedly connected with the fastening nuts.

[0012] Furthermore, the sealing assembly includes a plug, one end of which is provided with a sleeve hole for inserting the heat dissipation pipe, and the inner diameter of the sleeve hole is adapted to the outer diameter of the heat dissipation pipe;

[0013] A limiting hole for sleeve-mounting a substitute tube is provided at one end of the plug opposite to the sleeve hole, and the diameter of the limiting hole is equal to the outer diameter of the substitute tube.

[0014] Furthermore, the sealing unit further comprises:

[0015] A push ring, fixedly inserted into the sleeve hole;

[0016] A rubber gasket is fixedly connected to the push ring on one side of the heat dissipation pipe, the outer diameter of the rubber gasket is the same as the inner diameter of the sleeve hole, and the inner diameter of the rubber gasket is the same as the inner diameter of the water hole.

[0017] Furthermore, both ends of the substitute tube are provided with limiting protrusions for limiting the plugs at both ends of the substitute tube.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model is provided by respectively sleeved the plugs at the openings at both ends of the substitute pipe on the outer sides of the openings at both ends exposed at the cut-off part, at this time, one of the wrenches is used to limit the hexagonal piece, and at the same time, the fastening nuts at both sides of the hexagonal piece are rotated in sequence with the other wrench, and the fastening nuts push the plugs to move along the outer side of the substitute pipe under the action of the thread tangential force between the fastening threads and the fastening nuts, and the plugs drive the rubber gaskets to gradually press against the cut-off openings of the heat dissipation pipe fittings through the push rings, so as to complete the plugging of the heat dissipation pipe fittings, and when the heat dissipation pipe fittings after the plugging are in the process of water flow heat dissipation, the water flow can directly pass through the water through holes and continue to perform the heat dissipation work, so that the overall number of heat dissipation pipes will not be reduced after the plugging of the heat dissipation pipe fittings, and the heat dissipation efficiency will not be greatly affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For the utility model Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the internal structure of the pipeline substitute unit and the sealing unit of the utility model;

[0023] Figure 4This is a diagram showing the matching relationship between the rubber gasket and the substitute pipe of the utility model.

[0024] Figure numerals: 100, heat dissipation pipe fitting; 1, pipe replacement unit; 2, sealing unit; 11, replacement pipe; 12, hexagonal piece; 111, fastening thread; 112, limiting protrusion; 113, water hole; 21, sealing assembly; 211, plug; 212, sleeve hole; 213, limiting hole; 22, fastening nut; 23, rubber gasket; 24, push ring. DETAILED DESCRIPTION

[0025] 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 in 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.

[0026] See also Figure 1-4 , the utility model provides a technical solution:

[0027] A device for plugging leakage of heat exchange pipes of an indirect cooling tower includes a heat dissipation pipe 100 and further includes:

[0028] The pipe replacement unit 1 comprises a replacement pipe 11 for replacing the leaking part of the cut-off heat dissipation pipe 100, wherein the replacement pipe 11 is provided with a water hole 113 having the same inner diameter as the heat dissipation pipe 100;

[0029] The sealing unit 2 includes a sealing assembly 21 which is slidably mounted on the outside of the substitute tube 11 and is used to connect the substitute tube 11 with the heat dissipation tube, and a fastening nut 22 which is arranged on the outside of the substitute tube 11 and is used to tighten the connected sealing assembly 21 against the heat dissipation tube 100 and one end.

[0030] As an improvement, Figure 1-2 As shown, a hexagonal piece 12 is fixedly sleeved on the middle part of the outer side of the replacement pipe 11;

[0031] Fastening threads 111 are provided on the outside of the replacement pipe 11 and on both sides of the hexagonal piece 12 . The fastening threads 111 are threadedly connected to the fastening nuts 22 .

[0032] By fixing the hexagonal piece 12 on the outer side of the replacement pipe 11, when the fastening nut 22 is subsequently rotated, the operator can use a wrench to cover the hexagonal piece 12 to prevent relative rotation between the replacement pipe 11 and the heat dissipation pipe 100 when the fastening nut 22 is tightened.

[0033] As an improvement, Figure 3-4As shown, the sealing assembly 21 includes a plug 211, one end of which is provided with a sleeve hole 212 for inserting the heat dissipation pipe 100, and the inner diameter of the sleeve hole 212 is adapted to the outer diameter of the heat dissipation pipe 100;

[0034] A limiting hole 213 for sleeve-mounting the replacement tube 11 is formed at one end of the plug 211 opposite to the sleeve hole 212 . The diameter of the limiting hole 213 is equal to the outer diameter of the replacement tube 11 .

[0035] Furthermore, the sealing unit 2 further includes:

[0036] A push ring 24 is fixedly inserted into the sleeve hole 212;

[0037] The rubber gasket 23 is fixedly connected to the push ring 24 on one side of the heat dissipation pipe 100 . The outer diameter of the rubber gasket 23 is the same as the inner diameter of the sleeve hole 212 . The inner diameter of the rubber gasket 23 is the same as the inner diameter of the water hole 113 .

[0038] As an improvement, both ends of the substitute tube 11 are provided with limiting protrusions 112 for limiting the plugs 211 at both ends of the substitute tube 11;

[0039] A sealing ring is provided at the joint between the limiting protrusion 112 and the plug 211, which is not shown in the figure.

[0040] It should be noted that: in the specific implementation process of the utility model, Figure 3-4 As shown, when one of the heat dissipation pipes 100 leaks and needs to be plugged, the main valve of the heat dissipation pipe 100 is closed, the corresponding leaking part of the heat dissipation pipe 100 is cut off, and then according to the length of the cut-off area of ​​the heat dissipation pipe 100, a substitute pipe 11 that matches the length of the heat dissipation pipe 100 area is selected to substitute the cut-off area;

[0041] like Figure 3 As shown, during the replacement process, the plugs 211 at the openings at both ends of the replacement pipe 11 are respectively put on the outer sides of the openings at both ends exposed at the cut-off part. At this time, one of the wrenches is used to limit the hexagonal piece 12, and at the same time, the fastening nuts 22 located on both sides of the hexagonal piece 12 are rotated in sequence with another wrench. The fastening nuts 22 push the plugs 211 to move along the outer side of the replacement pipe 11 under the action of the thread tangential force between the fastening threads 111 and the plugs 211 drive the rubber gasket 23 to gradually press against the cut-off opening of the heat dissipation pipe fitting 100 through the push ring 24, completing the plugging of the heat dissipation pipe fitting 100. When the heat dissipation pipe fitting 100 after the plugging is in the process of water flow heat dissipation, the water flow can directly pass through the water through hole 113 and continue to perform heat dissipation work, so that after the heat dissipation pipe fitting 100 is plugged, the overall number of heat dissipation pipes will not be reduced, and the heat dissipation efficiency will not be greatly affected.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for plugging leakage of heat exchange pipes in an indirect cooling tower, comprising a heat dissipation pipe (100), characterized in that: Also includes: A pipe replacement unit (1) comprises a replacement pipe (11) for replacing a leaking part of a cut-off heat dissipation pipe (100), wherein a water hole (113) having the same inner diameter as that of the heat dissipation pipe (100) is provided in the replacement pipe (11); The sealing unit (2) comprises a sealing assembly (21) which is slidably sleeved on the outside of the substitute tube (11) and used to connect the substitute tube (11) with the heat dissipation tube, and a fastening nut (22) which is arranged on the outside of the substitute tube (11) and used to tighten the sealing assembly (21) against one end of the heat dissipation tube (100).

2. The device for plugging leakage of heat exchange tubes in an indirect cooling tower according to claim 1, characterized in that: A hexagonal piece (12) is fixedly sleeved on the middle part of the outer side of the replacement pipe (11); Fastening threads (111) are provided on the outside of the replacement pipe (11) and on both sides of the hexagonal piece (12), and the fastening threads (111) are threadedly connected to the fastening nuts (22).

3. The device for plugging leakage of heat exchange tubes in an indirect cooling tower according to claim 1, characterized in that: The sealing assembly (21) comprises a plug (211), one end of which is provided with a sleeve hole (212) for inserting the heat dissipation pipe (100), and the inner diameter of the sleeve hole (212) is adapted to the outer diameter of the heat dissipation pipe (100); One end of the plug (211) opposite to the sleeve hole (212) is provided with a limiting hole (213) for sleeve-mounting the substitute tube (11); the diameter of the limiting hole (213) is equal to the outer diameter of the substitute tube (11).

4. The device for plugging leakage of heat exchange tubes in an indirect cooling tower according to claim 3, characterized in that: The sealing unit (2) further comprises: A push ring (24) fixedly inserted into the sleeve hole (212); A rubber gasket (23) is fixedly connected to the push ring (24) on one side of the heat dissipation pipe (100), the outer diameter of the rubber gasket (23) being the same as the inner diameter of the sleeve hole (212), and the inner diameter of the rubber gasket (23) being the same as the inner diameter of the water hole (113).

5. The device for plugging leakage of heat exchange tubes of an indirect cooling tower according to claim 1, characterized in that: Both ends of the substitute tube (11) are provided with limiting protrusions (112) for limiting the plugs (211) at both ends of the substitute tube (11).

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