Flange under-pressure leaking stoppage device

Abstract

The utility model discloses a flange pressure plugging device, relates to the technical field of mechanical tools for engineering installation and production operation, and is used for solving the problem of leakage at the joint of an existing pipeline flange. The device comprises a shell located on the outer layer of the device and a lining air bag located on the inner layer of the device. The lining air bag is provided with a lining air bag side edge tightly attached to the shell, the lining air bag side edge is fixed and sealed through a compression bolt, the lining air bag is divided into an upper lining and a lower lining, the two sides of the lining air bag have certain extensions, and the extension parts of the upper lining and the lower lining are mutually stacked to form sealing; when the flange joint of the pipeline leaks, the leaking stoppage device is installed to wrap the pipeline. And the system can be prevented from being shut down and overhauled while pressure operation is met, so that the influence of flange leakage on production is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical tools for engineering installation and production operation, and specifically relates to a flange pressure sealing device. Background Technology

[0002] In actual engineering operations, low-pressure, ambient-temperature pipelines, where shutdown for maintenance is inconvenient due to user needs or other considerations, often require online leak sealing to maintain operation after a leak is detected at the main pipeline connection flange. Furthermore, sometimes leaks at pipeline flange connections cannot be maintained or thoroughly repaired due to narrow pipeline installations, necessitating system shutdown for repairs and incurring the workload or financial losses for maintenance personnel. Therefore, there is an urgent need to develop easy-to-operate online flange leak sealing devices to avoid the impact of leaks on system operation.

[0003] Flange connections are typically sealed with rubber or nylon gaskets. As the pressure boundary of the medium, the gasket withstands internal pressure and ages rapidly under the influence of pipeline vibration and media corrosion. An aged gasket will not provide a proper seal, leading to leaks. As the leakage increases, it will affect the safe and stable operation of the system and may even cause significant harm to personnel. Utility Model Content

[0004] The purpose of this utility model is to provide a flange live leak sealing device to solve the leakage problem at the existing pipeline flange connection, while meeting the requirements of live operation and avoiding system shutdown for maintenance.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a flange pressure sealing device, wherein the device includes: an outer shell located on the outer layer of the device and an inner lining airbag located on the inner layer of the device; the inner lining airbag has an inner lining airbag side that fits tightly with the outer shell, the inner lining airbag side is fixed and sealed by clamping bolts, the inner lining airbag is divided into an upper inner lining and a lower inner lining, and has a certain extension on both sides of the inner lining airbag. The extended parts of the upper and lower inner linings form a seal by stacking them on each other. When a leak occurs at the flange connection of the pipeline, the above-mentioned sealing device is installed to wrap it.

[0006] In the aforementioned flange pressure sealing device, the inner lining airbag is provided with an inner lining airbag inflation hole, through which the inner lining airbag is inflated.

[0007] In the aforementioned flange pressure sealing device, the air bladder inflation port has a self-sealing function, and a nut is installed on the air bladder inflation port after the air bladder is fully inflated to seal it.

[0008] In the aforementioned flange pressure sealing device, the extension portion of the upper liner of the inner liner extends along the outer layer of the airbag, and the extension portion of the lower liner of the inner liner extends along the inner layer of the airbag. When the upper and lower inner liner airbags are installed together, the extension portions will overlap.

[0009] The aforementioned flange pressure sealing device has an arched metal outer shell. Two outer shells are combined and fixed to the outside of the inner lining airbag by tightening bolts, which protects the inner lining airbag.

[0010] The aforementioned flange pressure sealing device includes openings for mounting clamping bolts on the extended portions on both sides of the outer shell, openings for inflation holes of the inner lining airbag on the upper part of the arched structure of the outer shell, and openings for mounting clamping bolts on the arched surface that contacts the side of the inner lining airbag.

[0011] In the aforementioned flange pressure sealing device, the inner lining airbag is a hollow rubber airbag.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the flange live leak sealing device provided by this utility model is simple to operate, suitable for live operation, can avoid system shutdown for maintenance, reduce the impact of flange leakage on production, and reduce the workload of maintenance personnel. Attached Figure Description

[0013] Figure 1 The figure shown is an overall assembly diagram of a flange pressure sealing device according to this utility model;

[0014] Figure 2 The figure shown is an overall schematic diagram of the outer shell of the flange pressure sealing device of this utility model;

[0015] Figure 3 The figure shown is an overall schematic diagram of the upper inner lining airbag of a flange pressurized leak sealing device according to this utility model;

[0016] Figure 4 The figure shown is an overall schematic diagram of the lower inner lining airbag of a flange pressure sealing device according to this utility model.

[0017] The following are the labels in the attached diagram: 1. Inflation port of the inner liner airbag; 2. Outer shell; 3. Pipe; 4. Locking bolt; 5. Pressing bolt; 6. Side of the inner liner airbag; 7. Inner liner airbag. Detailed Implementation

[0018] To address the leakage problem at existing pipe flange connections, this utility model provides a flange pressure sealing device. For example... Figures 1-4As shown, the device includes an inner airbag inflation port 1, an outer shell 2, a pipe 3, a locking bolt 4, a clamping bolt 5, an inner airbag side 6, and an inner airbag 7. The device consists of two layers: the outer shell 2 located on the outer layer and the inner airbag 7 located on the inner layer. The double-layer structure enhances the overall encapsulation and sealing effect.

[0019] The inner liner airbag 7 is a hollow rubber airbag. The interior of the inner liner airbag 7 contacts the curved surface of the pipe, and the exterior of the inner liner airbag side 6 is tightly fitted to the outer shell 2. The inner liner airbag side 6 is fixed and sealed by clamping bolts 5. The inner liner airbag 7 consists of an upper liner and a lower liner, which extend to both sides. The extension of the upper liner extends along the outer layer of the airbag, while the extension of the lower liner extends along the inner layer of the airbag. When the upper and lower liner airbags 7 are installed together, the extensions overlap, forming a sealed space between the stacked liner airbags and the leaking flange pipe to prevent leakage. The inner liner airbag 7 is provided with a self-sealing airbag inflation port 1. The inner liner airbag 7 is inflated through the airbag inflation port 1, and after inflation, a nut is installed on the airbag inflation port 1 for sealing.

[0020] The outer shell 2 of the device is made of arched metal. The two outer shells 2 are combined and fixed to the outside of the inner liner airbag 7 by clamping bolts 4, which protects the inner liner airbag 7. The extended parts on both sides of the outer shell 2 are provided with openings for installing clamping bolts 4. The upper part of the arched structure of the outer shell 2 is provided with an opening for the inner liner airbag inflation hole 1. The arched surface that contacts the side 6 of the inner liner airbag has openings for installing clamping bolts 5.

[0021] When a leak occurs at the flange connection of pipe 3, the above-mentioned leak-sealing device is installed to wrap it. After installation, the inner lining airbag 7 is inflated through the airbag inflation hole 1 so that it fits tightly against the inner wall of the outer shell 2. The inner wall of the outer shell 2 bears the pressure after the airbag is inflated, so that the inner lining airbag 7 and the flange form a sealed space to prevent the fluid leaking from the flange of pipe 3 from flowing out continuously.

[0022] It should be noted that the combination of the technical features in the embodiments of this utility model is not limited to the combination methods recorded in the embodiments of this utility model or the combination methods recorded in specific embodiments. All technical features recorded in this utility model can be freely combined or combined in any way, unless there is a contradiction between them.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flange pressure sealing device, characterized in that, The device includes an outer shell (2) located on the outer layer of the device and an inner liner airbag (7) located on the inner layer of the device; the inner liner airbag (7) has an inner liner airbag side (6) that fits tightly against the outer shell (2), the inner liner airbag side (6) is fixed and sealed by clamping bolts (5), the inner liner airbag (7) is divided into an upper inner liner and a lower inner liner, and has a certain extension on both sides of the inner liner airbag (7). The extended parts of the upper and lower inner liners form a seal by stacking them together. When a leak occurs at the flange connection of the pipe (3), the above-mentioned leak-sealing device is installed to wrap it.

2. The flange pressure sealing device according to claim 1, characterized in that, The inner liner airbag (7) is provided with an inner liner airbag inflation hole (1), through which the inner liner airbag (7) is inflated.

3. A flange pressure sealing device according to claim 2, characterized in that, The air inlet (1) of the inner lining airbag has a self-sealing function. After the inner lining airbag (7) is fully inflated, a nut is installed on the air inlet (1) of the inner lining airbag to seal it.

4. A flange pressure sealing device according to claim 1, characterized in that, The extension of the upper liner of the inner liner (7) extends along the outer layer of the airbag, and the extension of the lower liner of the inner liner (7) extends along the inner layer of the airbag. When the upper and lower inner liner airbags (7) are installed together, the extensions will overlap.

5. A flange pressure sealing device according to claim 1, characterized in that, The outer shell (2) is made of arched metal. The two outer shells (2) are combined and fixed to the outside of the inner lining airbag (7) by locking bolts (4), which protects the inner lining airbag (7).

6. A flange pressure sealing device according to claim 1, characterized in that, The extended portions on both sides of the outer shell (2) are provided with openings for installing locking bolts (4), and the upper part of the arched structure of the outer shell (2) is provided with an opening for an air bladder inflation hole (1), and the arched surface that contacts the side (6) of the air bladder is provided with an opening for installing clamping bolts (5).

7. A flange pressure sealing device according to any one of claims 1-6, characterized in that, The inner liner airbag (7) is a hollow rubber airbag.

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