Through-wall pipeline plugging device and construction method thereof

Abstract

The invention provides a through-wall pipeline plugging device which comprises a functional cover welded to the tail end of a working pipe, the functional cover is arranged on an inner sleeve in a sleeving mode, the functional cover and the inner sleeve are coaxially arranged, an operation opening is formed in the lower portion of the functional cover, and a normally-open control valve is installed at the operation opening; the functional cover is of a conical barrel structure, an end plate is arranged at the end, away from the working pipe, of the functional cover, and the tail end of the functional cover and the inner sleeve are sealed through the end plate. Each of the functional cover and the end plate comprises an upper split part and a lower split part. The through-wall pipeline plugging device is simple in structure and reasonable in design, the functional cover is welded to the tail end of the working pipe, the end plate is welded between the functional cover and the inner sleeve, so that a closed space is formed in the functional cover, when the through-wall pipeline plugging device is welded, leaked water is allowed to be discharged through the operation opening, and after the plugging device is welded, the sealing effect is good. The through-wall pipeline can be plugged by closing the operation opening through the control valve.

Description

Technical Field

[0001] The invention belongs to the technical field of water supply pipeline leakage repair, and in particular relates to a wall-penetrating pipeline blocking device and a construction method thereof. Background Art

[0002] Pipeline water supply is widely used in society. As the service life of water supply pipes increases, cracks or openings will sometimes appear, especially the leakage phenomenon at the wall penetration position is more prominent. As a city water supply pipe, once it is found, it must be repaired as soon as possible. In the existing technology, when performing pipeline leakage plugging construction, the pipeline is generally shut off first, and then the leakage position is excavated. After the leakage point is found, the leakage point will be excavated within a radius of several meters to form a foundation pit, and flour will be poured into the foundation pit to form a cofferdam to ensure that the construction personnel can plug the leaking part of the water supply pipe. However, due to the long distance of the water supply pipe, the whole pipeline is difficult to cut off the water supply. The cofferdam construction before plugging is not only complicated to operate, but also consumes a lot of flour, resulting in a long time and high cost for pipeline plugging construction. Therefore, it is necessary to improve the existing through-wall pipeline plugging construction device and construction method. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a wall-penetrating pipe sealing device and a construction method thereof.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A wall-penetrating pipe plugging device comprises a functional cover welded to the end of a working pipe, the functional cover is sleeved on an inner sleeve and arranged coaxially with the inner sleeve, an operation port is provided at the lower part of the functional cover, and a normally open control valve is installed at the operation port; the functional cover is a conical cylindrical structure, an end plate is provided at the end away from the working pipe, and the end plate seals the end of the functional cover and the inner sleeve; the functional cover and the end plate both comprise upper and lower split parts.

[0006] Furthermore, the end plate is in a circular ring shape, the inner side of which is welded and fixed to the inner sleeve, and the outer side of which is welded and fixed to the functional cover.

[0007] Furthermore, the length of the functional cover along the axial direction of the working tube is 400 mm.

[0008] Furthermore, the wall thickness of the functional cover is 10 mm.

[0009] Furthermore, the operation port includes a cylindrical tube arranged corresponding to the water hole at the lower part of the functional cover, and the upper end of the cylindrical tube is welded and fixed to the functional cover.

[0010] Furthermore, a connecting flange is provided at the lower end of the cylindrical barrel, and the control valve is installed on the connecting flange.

[0011] Furthermore, the control valve is a gate valve.

[0012] A construction method of the above-mentioned wall-penetrating pipe blocking device comprises the following steps:

[0013] First, a slope is excavated on the wall surface corresponding to the outer periphery of the working pipe;

[0014] Weld the lower flap functional cover split at the end of the working tube, then weld the lower flap end plate split at the end of the lower flap functional cover split, and then weld the lower flap end plate split to the inner sleeve;

[0015] Weld the upper valve functional cover split body at the end of the working tube, then weld the upper valve end plate split body at the end of the upper valve functional cover split body, and then weld the upper valve end plate split body to the inner sleeve;

[0016] The lower flap functional cover is split and fixed with the upper flap functional cover, and the lower flap end plate is split and fixed with the upper flap end plate, so that a liquid storage space is formed between the functional cover and the inner sleeve;

[0017] Finally, the control valve is closed.

[0018] Furthermore, the slope is 45 degrees.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The through-wall pipe plugging device provided by the present invention has a simple structure and a reasonable design. A functional cover is welded at the end of the working pipe and an end plate is welded between the functional cover and the inner sleeve to form a closed space in the functional cover. When the through-wall pipe plugging device is welded, leaked water is allowed to be discharged through the operating port. After the welding of the plugging device is completed, the operating port is closed by the control valve to complete the plugging of the through-wall pipe. The construction operation is simple and time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the structure created by the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram after removing the end plate;

[0024] Figure 3 Create a front structural schematic diagram for the present invention;

[0025] Figure 4 A schematic diagram of the present invention when creating an installation application;

[0026] Figure 5 A cross-sectional view of the invention when it is installed and applied;

[0027] Figure 6 This is a schematic diagram of the present invention when the lower flap functional cover is separated and welded to the working tube;

[0028] Figure 7 A schematic diagram of the invention when the lower flap functional cover is separated and welded with the lower flap end plate;

[0029] Figure 8 The present invention is a schematic diagram of the welding of the lower lobe end plate split body and the inner sleeve. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] A wall-penetrating pipe plugging device, such as Figures 1 to 5As shown, it includes a functional cover 2 welded to the end of the working tube 1, and the functional cover is sleeved on the inner sleeve 3 and arranged coaxially with the inner sleeve. In order to facilitate the installation of the functional cover on the outside of the inner sleeve, the functional cover in the invention includes an upper and lower functional cover split 7, which can be first buckled on the outside of the inner sleeve, and then the two are welded and fixed to form the functional cover as a whole. The end plate includes an upper and lower end plate split 7, which can be buckled on the outside of the inner sleeve, and then the two are welded and fixed to form the end plate as a whole. An operating port 4 is provided at the lower part of the functional cover, and a normally open control valve 5 is installed at the operating port; the functional cover is a conical cylindrical structure, and an end plate 6 is provided at the end away from the working tube, and the end of the functional cover and the inner sleeve are closed by the end plate.

[0035] The end plate is annular, and its inner side is welded and fixed to the inner sleeve, and its outer side is welded and fixed to the functional cover. The length of the functional cover along the axial direction of the working pipe is 400mm. The wall thickness of the functional cover is 10mm. The operation port includes a cylindrical tube 8 arranged corresponding to the water hole at the lower part of the functional cover, and the upper end of the cylindrical tube is welded and fixed to the functional cover, so that the cylindrical tube is connected to the closed space in the functional cover.

[0036] The lower end of the cylindrical barrel is provided with a connecting flange 9, so that the control valve can be installed through the connecting flange. As an example, the control valve adopts a gate valve. When the plugging operation is performed, the water generated by the leakage is discharged through the cylindrical barrel. When the functional cover is welded and closed, the control valve on the cylindrical barrel is closed to complete the pipeline plugging. The operation is simple and easy to implement.

[0037] A construction method for the above-mentioned wall-penetrating pipe plugging device comprises the following steps:

[0038] 1. First, a slope 12 is excavated on the surface of the wall 10 corresponding to the outer periphery of the working pipe; usually, the slope is 45 degrees, for example, the slope is 30mmX30mm.

[0039] 2. Weld the lower flap functional cover split at the end of the working tube, then weld the lower flap end plate split at the end of the lower flap functional cover split, and then weld the lower flap end plate split to the inner sleeve;

[0040] 3. Weld the upper valve functional cover split at the end of the working tube, then weld the upper valve end plate split at the end of the upper valve functional cover split, and then weld the upper valve end plate split to the inner sleeve;

[0041] 4. Weld and fix the lower petal functional cover split body and the upper petal functional cover split body, and weld and fix the lower petal end plate split body and the upper petal end plate split body, so that a liquid storage space is formed between the functional cover and the inner sleeve;

[0042] 5. During the implementation of the above steps, the water leaking from the wall will be discharged through the operation port, ensuring the smooth welding of the functional cover. Finally, the control valve is closed to complete the pipeline blocking operation. In order to avoid the control valve from being misoperated, the control valve can be welded after it is closed.

[0043] like Figure 6 As shown, when the lower petal functional cover is welded to the working pipe, the gap between the lower petal functional cover and the inner sleeve corresponding to the welding position is first blocked with the water stop strip 11, and then welding is performed to prevent water leakage from affecting the welding quality of the welding position. In the case of large leakage, the water stop strip can be used to block only the welding position as the welding position changes, to prevent water from overflowing from the welding position and affecting the welding quality.

[0044] like Figure 7 As shown, when the lower lobe end plate split is welded to the lower lobe functional cover split, the water stop strip can be pressed against the welding position of the end plate and the functional cover by means of iron wire or steel chisel, and then the sealing position of the water stop strip can be welded. During the welding process, the sealing position of the water stop strip can be adaptively adjusted as the welding position changes to avoid water overflowing from the welding position and affecting the welding quality.

[0045] like Figure 8 As shown, when the lower lobe end plate is welded to the inner casing, the water stop strip can be pressed against the welding position between the lower lobe end plate and the inner casing by iron wire or steel chisel, and then the sealing position of the water stop strip is welded. During the welding process, the sealing position of the water stop strip is adaptively adjusted as the welding position changes, thereby avoiding water overflow at the welding position and affecting the welding quality.

[0046] Since the leaked water will be discharged through the operating port, the leaked water will not affect the welding quality when the upper lobe functional cover split is welded to the working tube, when the upper lobe end plate split is welded to the upper lobe functional cover split, and when the upper lobe end plate split is welded to the inner sleeve. Therefore, no water stopping treatment is required during the above welding.

[0047] The through-wall pipe plugging device provided by the present invention has a simple structure and a reasonable design. A functional cover is welded at the end of the working pipe and an end plate is welded between the functional cover and the inner sleeve to form a closed space in the functional cover. When the through-wall pipe plugging device is welded, leaked water is allowed to be discharged through the operating port. After the welding of the plugging device is completed, the operating port is closed by the control valve to complete the plugging of the through-wall pipe. The construction operation is simple and time-saving and labor-saving.

[0048] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wall-penetrating pipe plugging device, characterized in that: It includes a functional cover welded to the end of the working tube, which is sleeved on the inner sleeve and coaxially arranged with the inner sleeve. An operation port is provided at the lower part of the functional cover, and a normally open control valve is installed at the operation port. The functional cover is a conical cylindrical structure, and an end plate is provided at the end away from the working tube, and the end plate closes the end of the functional cover and the inner sleeve. The functional cover and the end plate both include upper and lower petals.

2. A wall-penetrating pipe plugging device according to claim 1, characterized in that: The end plate is in a circular ring shape, the inner side of which is welded and fixed to the inner sleeve, and the outer side of which is welded and fixed to the functional cover.

3. A wall-penetrating pipe plugging device according to claim 1, characterized in that: The length of the functional cover along the axial direction of the working tube is 400 mm.

4. A wall-penetrating pipe plugging device according to claim 1, characterized in that: The wall thickness of the functional cover is 10 mm.

5. A wall-penetrating pipe plugging device according to claim 1, characterized in that: The operation port comprises a cylindrical tube arranged corresponding to the water through hole at the lower part of the functional cover, and the upper end of the cylindrical tube is welded and fixed to the functional cover.

6. A wall-penetrating pipe plugging device according to claim 5, characterized in that: A connecting flange is provided at the lower end of the cylindrical barrel, and the control valve is installed on the connecting flange.

7. A wall-penetrating pipe plugging device according to claim 6, characterized in that: The control valve is a gate valve.

8. A construction method for the wall-penetrating pipe plugging device according to claim 1, characterized in that: The steps include: First, a slope is excavated on the wall surface corresponding to the outer periphery of the working pipe; Weld the lower flap functional cover split at the end of the working tube, then weld the lower flap end plate split at the end of the lower flap functional cover split, and then weld the lower flap end plate split to the inner sleeve; Weld the upper valve functional cover split body at the end of the working tube, then weld the upper valve end plate split body at the end of the upper valve functional cover split body, and then weld the upper valve end plate split body to the inner sleeve; The lower flap functional cover is split and fixed with the upper flap functional cover, and the lower flap end plate is split and fixed with the upper flap end plate, so that a liquid storage space is formed between the functional cover and the inner sleeve; Finally, the control valve is closed.

9. The construction method of the wall-penetrating pipe plugging device according to claim 8, characterized in that: The slope is 45 degrees.

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