External drainage chain type leaking stopper clamp

Abstract

The utility model discloses the outer drainage chain formula leaking stoppage fixture of leaking stoppage fixture technical field, and its structure is reasonable, the utility model discloses through the cooperation of drainage valve and oval head realizes the drainage with pressure, and the double -layer protective structure is formed to the outer sleeve layer and inner sleeve layer, and the oblique connecting rib board and flat connecting rib board enhance the stability of inner and outer sleeve layer connection, and the rubber mat limit ring fixes the rubber mat, and the cooperation asbestos rope forms double -sealed, and the reinforcing ring strengthens the outer sleeve layer bottom end structure intensity, and the whole chain seat collocates support rib board A, B realizes the steady assembly with the pipeline, and adapts to different specifications pipeline of Phi168~Phi1219, and under the pressure of 15MPa, -20~120 DEG C temperature working condition, high -efficiently complete the sealing and drainage with pressure, and the sealing element, heat insulating part is convenient to replace, forms "the drainage with pressure - double -sealed - steady adaptation - convenient maintenance " integrated structure, solves the poor adaptability of the existing leaking stoppage fixture, and the sealing is not strict, and the installation is complicated, guarantees the safety and reliability of long -distance pipeline sealing operation.

Description

Technical Field

[0001] This utility model relates to the field of leak-sealing clamp technology, specifically an external drainage chain-type leak-sealing clamp. Background Technology

[0002] In the process of transporting oil and other media, long-distance pipelines often face the need for pressurized sealing of valves left behind by criminals who puncture and steal oil, as well as the need for drainage sealing of micro-leaks. Current sealing devices for such pipeline leaks have limited adaptability and cannot meet the needs of pipelines with different specifications from Φ168 to Φ1219. Furthermore, under the conditions of pipeline working pressure not exceeding 15MPa and working temperature from -20℃ to 120℃, existing sealing devices are prone to problems such as incomplete sealing, cumbersome installation and operation, and sealing failure due to heat concentration or loosening during welding. They cannot efficiently achieve pressurized drainage sealing and subsequent safe welding operations. At the same time, there is a lack of convenient replacement structures for sealing and heat insulation components, which affects the continuity and reliability of sealing operations.

[0003] Therefore, it is necessary to develop an external drainage chain-type leak-stopping clamp. Summary of the Invention

[0004] The purpose of this invention is to provide an external drainage chain-type leak-stopping clamp to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an external drainage chain-type leak-stopping clamp, including a drainage valve, an elliptical end cap installed at the bottom end of the drainage valve, and an outer sleeve installed at the bottom end of the elliptical end cap; An inner sleeve is installed at the center of the outer sleeve, and a reinforcing ring is installed at the bottom of the outer sleeve.

[0006] Preferably, an integral chain seat is installed on the upper part of the outer wall of the outer jacket, and a support rib plate A and a support rib plate B are installed on the bottom of the integral chain seat.

[0007] Preferably, the supporting stiffener A is located on the left and right sides of the outer wall of the outer layer, and the supporting stiffener B is located on the front and back sides of the outer layer.

[0008] Preferably, a diagonal connecting rib is installed above the outer wall of the inner sleeve, and a flat connecting rib is installed below the outer wall of the inner sleeve.

[0009] Preferably, a rubber pad limiting ring is installed below the flat connecting stiffener, and an asbestos rope is installed on the outer wall of the rubber pad limiting ring.

[0010] Preferably, the asbestos rope is located between the rubber pad limiting ring and the outer layer, and the rubber pad limiting ring has a rubber pad inside.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This external drainage chain-type leak-sealing clamp adopts a double-layer structure with inclined and flat connecting stiffeners, which greatly improves the structural strength and pressure resistance. It is suitable for high-pressure conditions below 15MPa, and the double-layer protection effectively avoids sealing failure caused by heat concentration during welding, ensuring operational safety.

[0012] The dual sealing design of rubber gaskets and asbestos ropes, combined with the fixing effect of rubber gasket limit rings, ensures a tight seal and prevents media leakage. The combination design of the overall chain seat and supporting stiffeners can flexibly adapt to long-distance pipelines of different specifications from Φ168 to Φ1219, without the need to customize special clamps for different pipelines, significantly improving adaptability.

[0013] The sealing and insulation components adopt a modular design, which makes replacement convenient and quick without affecting the continuity of the sealing operation. The overall structure is simple to install and operate without complicated procedures. It can efficiently achieve pressurized sealing of valves left behind by drilling for oil theft and drainage sealing of micro-hole leaks, providing a guarantee for subsequent safe welding operations and reducing operating costs and risks. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present utility model; Figure 3 The selection provided for this utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 The diagram shows a selected portion of the structure of this utility model.

[0015] In the diagram: 1. Drainage valve; 2. Elliptical end cap; 3. Integral chain seat; 4. Support rib plate A; 5. Outer layer; 6. Diagonal connecting rib plate; 7. Inner layer; 8. Flat connecting rib plate; 9. Support rib plate B; 10. Rubber gasket limiting ring; 11. Rubber gasket; 12. Asbestos rope; 13. Reinforcing ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides the following technical solution: an external drainage chain-type leak-stopping clamp, please refer to [link / reference]. Figures 1-4 It includes a drainage valve 1, an elliptical end cap 2 installed at the bottom end of the drainage valve 1, and an outer sleeve 5 installed at the bottom end of the elliptical end cap 2. An inner layer 7 is installed at the center of the inner outer layer 5. An integral chain seat 3 is installed on the upper part of the outer wall of the outer outer layer 5. Support ribs A4 and B9 are installed at the bottom of the integral chain seat 3. Support ribs A4 are located on the left and right sides of the outer wall of the outer outer layer 5, and support ribs B9 are located on the front and back sides of the outer outer layer 5. An inclined connecting rib plate 6 is installed on the upper part of the outer wall of the inner sleeve layer 7, a flat connecting rib plate 8 is installed on the lower part of the outer wall of the inner sleeve layer 7, a rubber pad limiting ring 10 is installed below the flat connecting rib plate 8, an asbestos rope 12 is installed on the outer wall of the rubber pad limiting ring 10, the asbestos rope 12 is located between the rubber pad limiting ring 10 and the outer sleeve layer 5, a rubber pad 11 is provided inside the rubber pad limiting ring 10, and a reinforcing ring 13 is installed at the bottom of the outer sleeve layer 5.

[0018] The drain valve 1 is the core component for pressurized drainage. Made of high-pressure corrosion-resistant valve material, it possesses excellent sealing and pressure resistance. It is used to drain the medium from the pipeline during the sealing process, balancing internal pressure and preventing sealing failure due to high pressure. An elliptical end cap 2 is fixed to the bottom of the drain valve 1 via flange bolts. The elliptical end cap 2 is made of carbon steel or stainless steel, stamped with a smooth surface and excellent pressure resistance. It connects the drain valve 1 to the outer jacket 5 and also serves to buffer the medium pressure.

[0019] An outer sleeve 5 is welded to the bottom of the elliptical end cap 2. The outer sleeve 5 is a cylindrical metal sleeve made of high-strength alloy steel, and its wall thickness is designed according to the pipeline working pressure to ensure that it does not deform under a pressure of 15MPa. An integral chain seat 3 is welded to the upper part of the outer wall of the outer sleeve 5. The integral chain seat 3 is a ring-shaped metal seat used to install and fix the chain (not shown), so as to achieve the ring fixation of the clamp and the pipeline.

[0020] The bottom of the integral chain seat 3 is uniformly welded with support ribs A4 and B9. Support ribs A4 are located on the left and right sides of the outer wall of the outer layer 5, and support ribs B9 are located on the front and back sides of the outer layer 5. The two sets of ribs are distributed in a cross manner to further enhance the connection strength between the integral chain seat 3 and the outer layer 5 and prevent it from falling off when under stress.

[0021] An inner sleeve 7 is installed at the center of the outer sleeve 5. The inner sleeve 7 is also a cylindrical metal sleeve, coaxially arranged with the outer sleeve 5, and made of the same material as the outer sleeve 5, forming a double-layer protective structure to improve the overall pressure resistance and corrosion resistance of the clamp. A diagonal connecting rib 6 is welded and fixed to the upper part of the outer wall of the inner sleeve 7. The diagonal connecting rib 6 is inclined, with one end welded to the inner sleeve 7 and the other end welded to the inner wall of the outer sleeve 5, enhancing the radial connection stability of the inner and outer sleeves.

[0022] A flat connecting stiffener 8 is welded and fixedly installed on the lower part of the outer wall of the inner sleeve layer 7. The flat connecting stiffener 8 is horizontally set and corresponds vertically to the oblique connecting stiffener 6, further reinforcing the connection between the inner and outer sleeve layers and preventing relative displacement during operation. A rubber pad limiting ring 10 is fixedly installed below the flat connecting stiffener 8 through a slot. The rubber pad limiting ring 10 is a ring-shaped metal part used to limit the position of the rubber pad 11.

[0023] The rubber gasket limiting ring 10 has a rubber gasket 11 inside. The rubber gasket 11 is made of oil-resistant, high-temperature-resistant, and corrosion-resistant rubber material, and its surface is tightly fitted to the outer wall of the pipeline, playing a primary sealing role. An asbestos rope 12 is wound and installed on the outer wall of the rubber gasket limiting ring 10. The asbestos rope 12 is located between the rubber gasket limiting ring 10 and the outer jacket layer 5, and has good sealing and heat insulation performance, forming an auxiliary seal. At the same time, it reduces the heat transfer to the sealing element during welding and protects the rubber gasket 11 from high-temperature damage.

[0024] A reinforcing ring 13 is fixedly installed at the bottom of the outer layer 5 by welding. The reinforcing ring 13 is a ring-shaped metal plate with the same material as the outer layer 5. It is used to enhance the structural strength of the bottom of the outer layer 5, prevent the bottom from being deformed by force during the sealing operation, and ensure the sealing effect.

[0025] Working principle: When using this utility model, the clamp assembly and preparation are carried out first: according to the specifications of the long-distance pipeline to be sealed, Φ168~Φ1219, select the appropriate size of rubber gasket 11 and asbestos rope 12, embed the rubber gasket 11 into the rubber gasket limiting ring 10, and ensure that the rubber gasket 11 is flat and undamaged; then, evenly wrap the asbestos rope 12 around the outer wall of the rubber gasket limiting ring 10, ensuring that the wrapping is tight and there is no loosening or falling off, thus completing the assembly of the sealing and heat insulation components.

[0026] The assembled inner sleeve 7 is welded and fixed inside the outer sleeve 5 by the oblique connecting stiffener 6 and the flat connecting stiffener 8, ensuring that the inner and outer sleeves are coaxial and the connection is firm; the elliptical end cap 2 is welded and fixed to the top of the outer sleeve 5, and then the drainage valve 1 is installed on the elliptical end cap 2 by flange bolts. Check all welds and connections to ensure that there is no risk of leakage; finally, the integral chain seat 3 is welded and fixed to the outer wall of the outer sleeve 5 by the supporting stiffener A4 and the supporting stiffener B9, and the reinforcing ring 13 is welded and fixed to the bottom of the outer sleeve 5, completing the overall assembly of the fixture.

[0027] On-site sealing operation: Place the clamp on the leak point or the location of any remaining valve in the pipeline, ensuring that the rubber gasket 11 is aligned with the leak point. The integral chain seat 3 is then wrapped around the pipeline. By passing the chain through the pre-drilled holes in the integral chain seat 3, the clamp is firmly fixed to the pipeline. Adjust the chain tension to ensure that the rubber gasket 11 fits tightly against the outer wall of the pipeline. The asbestos rope 12 is compressed and filled between the rubber gasket limiting ring 10 and the outer layer 5, forming a double seal.

[0028] Open the drain valve 1. The medium in the pipeline, such as oil, is discharged from the drain valve 1 through the internal channel between the inner sleeve 7 and the elliptical end cap 2, achieving pressurized drainage, balancing the internal pressure of the pipeline, and preventing high pressure from causing seal failure. After the drainage stabilizes, subsequent welding repair work can be carried out according to the operation requirements. The asbestos rope 12 acts as heat insulation, reducing the transfer of welding heat to the rubber gasket 11 and protecting the sealing structure from damage.

[0029] When the sealing operation is completed or the seal needs to be replaced, loosen the chain, remove the clamp, and release the rubber gasket limiting ring 10 to replace the aged or damaged rubber gasket 11 and asbestos rope 12. After replacement, reassemble the clamp according to the original steps, and it can be put back into use. The entire process requires no complicated tools, is easy to operate, and is suitable for pipelines of different specifications and complex working conditions, ensuring the efficiency and safety of sealing operations.

[0030] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An external drainage chain-type leak-sealing clamp, comprising a drainage valve (1), wherein an elliptical end cap (2) is installed at the bottom end of the drainage valve (1), characterized in that: The bottom end of the elliptical head (2) is fitted with an outer sleeve (5); An inner layer (7) is installed at the center of the outer layer (5), and a reinforcing ring (13) is installed at the bottom of the outer layer (5).

2. The external drainage chain-type leak-sealing clamp according to claim 1, characterized in that: An integral chain seat (3) is installed on the upper part of the outer wall of the outer layer (5), and a support rib plate A (4) and a support rib plate B (9) are installed on the bottom of the integral chain seat (3).

3. The external drainage chain-type leak-sealing clamp according to claim 2, characterized in that: The supporting stiffener A (4) is located on the left and right sides of the outer wall of the outer layer (5), and the supporting stiffener B (9) is located on the front and back sides of the outer layer (5).

4. The external drainage chain-type leak-sealing clamp according to claim 1, characterized in that: An inclined connecting rib plate (6) is installed above the outer wall of the inner sleeve (7), and a flat connecting rib plate (8) is installed below the outer wall of the inner sleeve (7).

5. The external drainage chain-type leak-sealing clamp according to claim 4, characterized in that: A rubber pad limiting ring (10) is installed below the flat connecting stiffener plate (8), and an asbestos rope (12) is installed on the outer wall of the rubber pad limiting ring (10).

6. The external drainage chain-type leak-sealing clamp according to claim 5, characterized in that: The asbestos rope (12) is located between the rubber pad limiting ring (10) and the outer layer (5), and the rubber pad limiting ring (10) is provided with a rubber pad (11) inside.

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