Tubular cooler tube bundle leaking stoppage device

Abstract

The utility model discloses a tube type cooler tube bundle leaking stoppage device which comprises an expansion body and a wedge body, a groove is formed in the expansion body, a through hole is formed in the bottom of the groove in a penetrating mode, the shape of the wedge body is matched with that of the groove, the size of the wedge body is larger than that of the groove, a tensioning bolt is arranged at the bottom end of the wedge body, and the tensioning bolt is arranged in the through hole in a penetrating mode. A gasket and a nut are arranged at the penetrating-out end of the tensioning bolt. The wedge body is pulled into the groove of the expansion body through the tensioning bolt, the expansion body is evenly expanded to be tightly pressed on the surface of the leakage pipeline, an effective sealing face is formed to block an inlet of the leakage pipeline, and the situation that the plug is not installed in place, space is limited and the like, and consequently the plug falls off is eradicated.

Description

Technical Field

[0001] The utility model belongs to a large-scale generator set cooling system and a pipeline cooling system, and in particular relates to a tube bundle leakage plugging device for a tube type cooler. Background Art

[0002] Tubular coolers are still the dominant type in large thermal power generating units. For example, the condenser, low-pressure heater, and hydrogen cooler of large generating units all use tubular coolers. Due to factors such as cooling water quality and operating time, tubular coolers leak frequently, which can cause damage to the grease emulsification equipment or even forced shutdown of the unit or even boiler pickling or large-scale tube replacement. Traditional plugs fall off or are not sealed tightly due to expansion or construction technology, which is the main factor causing the recurrence. In addition, due to the influence of the material, some coolers cannot be reinforced with plugs, resulting in frequent failures. At the same time, due to the limited space of the cooler entrance and exit, it also brings a large workload to the maintenance staff. Utility Model Content

[0003] The utility model aims to provide a tube bundle plugging device for a tube cooler, so as to solve the problem that the existing plug is driven into the inlet and outlet of the pipeline by knocking, and the installation is easily limited by space and cannot be tightened.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A tubular cooler tube bundle plugging device comprises an expansion body and a wedge, wherein a groove is arranged in the expansion body, a through hole is penetrated at the bottom of the groove, the shape of the wedge matches the shape of the groove, the size of the wedge is larger than the size of the groove, a tensioning bolt is arranged at the bottom end of the wedge, the tensioning bolt penetrates in the through hole, and a gasket and a nut are arranged at the protruding end of the tensioning bolt.

[0006] In order to further realize the utility model, the wedge is an inverted cylindrical structure, and the top diameter and bottom diameter of the wedge are both larger than the top diameter and bottom diameter of the groove.

[0007] In order to further realize the utility model, the center axis of the tensioning bolt overlaps with the center axis of the wedge.

[0008] In order to further realize the utility model, the central axis of the through hole and the groove overlaps with the central axis of the expansion body.

[0009] In order to further realize the utility model, the expansion body and the wedge body are both made of copper.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the present utility model, a wedge is pulled into a groove of an expansion body through a tension bolt, and the expansion body is evenly thickened and pressed against the surface of the leaking pipeline, forming an effective sealing surface to block the inlet of the leaking pipeline, thus preventing the plug from falling off due to factors such as the plug not being installed in place or limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model (showing the disassembled state);

[0013] Figure 2 is a bottom view of the wedge in the present utility model;

[0014] Figure 3 is a top view of the expansion body in the present utility model;

[0015] The meanings of the reference numerals are as follows: 1, expansion body; 2, wedge; 3, groove; 4, through hole; 5, tension bolt; 6, gasket; 7, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0017] As Figures 1 - 3 shown, a leakage plugging device for a tube bundle of a tube cooler includes an expansion body 1 and a wedge 2. A groove 3 is provided in the expansion body 1, and a through hole 4 penetrates through the bottom of the groove 3. The wedge 2 has an inverted cylindrical structure, and the top diameter and the bottom diameter of the wedge 2 are both larger than the top diameter and the bottom diameter of the groove 3. The shape of the wedge 2 matches the shape of the groove 3, and the size of the wedge 2 is larger than the size of the groove 3. A tension bolt 5 is provided at the bottom end of the wedge 2, and the tension bolt 5 penetrates through the through hole 4. A gasket 6 and a nut 7 are provided at the protruding end of the tension bolt 5. The central axis of the tension bolt 5 coincides with the central axis of the wedge 2, and the central axes of the through hole 4 and the groove 3 both coincide with the central axis of the expansion body 1. Both the expansion body 1 and the wedge 2 are made of copper material.

[0018] After checking and confirming the leaking pipeline of the tube cooler, select the corresponding leakage plugging device for the tube bundle of the present utility model according to the pipeline specifications of the tube cooler. First, clean the pipe orifice to be plugged and its periphery to ensure that there are no cracks, water scales and deformations on the pipe orifice. Then, insert the tension bolt 5 into the through hole 4 from the bottom of the groove 3, insert the wedge 2 into the groove 3, so that the wedge 2 and the expansion body 1 are assembled into a whole. Then, put the gasket 5 and the nut 7 on the tension bolt 5 in sequence and connect them until they do not fall off. Then, insert the assembled expansion body 1 and wedge 2 into the pipe orifice to be plugged, check that the expansion body 1 is installed in place, ensure that the gap between the expansion body 1 and the inner wall of the pipeline is not greater than 1 mm, check that the expansion body 1 is not tilted, and slowly tighten the bolt 7 with a wrench to pull the wedge 2 into the groove 3 of the expansion body 1, so that the expansion body 1 is evenly thickened and fully fits with the inner wall of the tube cooler pipe wall to achieve sealing and plugging.

Claims

1. A tube cooler tube bundle plugging device, characterized in that: The invention comprises an expansion body (1) and a wedge body (2), wherein a groove (3) is arranged in the expansion body (1), a through hole (4) is penetrated at the bottom of the groove (3), the shape of the wedge body (2) matches the shape of the groove (3), the size of the wedge body (2) is larger than the size of the groove (3), a tensioning bolt (5) is arranged at the bottom end of the wedge body (2), the tensioning bolt (5) is penetrated in the through hole (4), and a gasket (6) and a nut (7) are arranged at the protruding end of the tensioning bolt (5).

2. The tube bundle plugging device for a tubular cooler according to claim 1, characterized in that: The wedge (2) is an inverted cylindrical structure, and the top surface diameter and the bottom surface diameter of the wedge (2) are both larger than the top surface diameter and the bottom surface diameter of the groove (3).

3. The tube bundle plugging device for a tubular cooler according to claim 1 or 2, characterized in that: The center axis of the tensioning bolt (5) overlaps with the center axis of the wedge (2).

4. The tube bundle plugging device for a tubular cooler according to claim 3, characterized in that: The central axes of the through hole (4) and the groove (3) overlap with the central axis of the expansion body (1).

5. The tube bundle plugging device for a tubular cooler according to claim 4, characterized in that: The expansion body (1) and the wedge body (2) are both made of copper.

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