Insulating joint leakage stopper

Abstract

The utility model relates to the technical field of leaking stoppage, in particular to an insulating joint leaking stoppage device. Comprising a leaking stoppage sleeve, the leaking stoppage sleeve is composed of two arc-shaped plates, the arc-shaped plates are made of insulating materials, the two arc-shaped plates are detachably, fixedly and hermetically connected, an insulating joint composed of two insulating flanges is located in the leaking stoppage sleeve, the inner edge of the leaking stoppage sleeve is hermetically connected with the outer edges of the insulating flanges, and the inner edge of the leaking stoppage sleeve is provided with an injection groove corresponding to a joint of the two insulating flanges. The arc-shaped plate is provided with an injection agent valve communicated with the injection agent groove, a sealing injection agent is injected into the injection agent groove through the injection agent valve, and the sealing injection agent can conduct leakage stoppage on a leakage point at the joint of the two insulating flanges. According to the utility model, the leakage point at the joint of the insulating flange can be plugged, the leakage plugging operation under pressure can be carried out, and the leakage point can be rapidly plugged.

Description

Technical Field

[0001] The utility model relates to the technical field of leak plugging, in particular to an insulating joint leak plugger. Background Art

[0002] Insulating joints are an indispensable and important component in gas transmission and distribution and oil pipeline systems. Their function is to insulate and isolate the sections of gas transmission and distribution pipelines, and between gas pressure regulating stations and transmission and distribution pipelines, to protect them from electrochemical corrosion and extend their service life.

[0003] The insulating joints used in gas transmission and distribution and oil transmission pipelines in my country are flange-type insulating joints, also known as insulating flanges. Its own structural characteristics determine its many limitations in terms of use, performance and maintenance. The insulating flange is essentially the same as the ordinary flange connection in appearance. It is just that the sealing gasket between the two flanges is made of insulating material; the bolts, nuts and flanges are insulated from each other by an insulating sleeve with steps. The axial tensile load that this structure can withstand is limited by the strength of the plastic sleeve step and cannot be very high; the axial compression force that can be borne is limited by the elastic limit of the (sealed) insulating gasket. Excessive axial compression will cause it to lose elasticity and destroy the sealing performance; if one side of the (sealed) insulating gasket has a tendency to reduce the sealing under the action of the bending load, the other side may lose elasticity due to excessive force. Its sealing insulation is directly exposed to the outside and in direct contact with moist gas or soil, and its necessary insulation performance is reduced. Due to the influence of changes in terrain, landforms and other natural factors in actual use, the stress situation of the insulating flange is very complicated, resulting in inclination and dislocation of the two flange surfaces and impaired sealing. Over the years, leaks in gas distribution pipelines and oil pipelines that require urgent repair often occur on the butt sealing surface of the insulating flange. Conventional metal sealing fixtures are equipped with sealing mechanisms on the pipeline, which causes the metal sealing fixture to directly contact the pipelines at both ends of the insulating joint, resulting in the failure of the insulation effect. Therefore, a plugging device is needed that can solve the leakage problem and maintain the insulation effect of the insulating joint.

[0004] In the prior art, a patent document with application number 201320104864.9 and titled "Pressure-sealing device for insulating flange of gas transmission pipeline" discloses a pressure-sealing device that can seal leaks at the connection point between the insulating flange and the pipeline. When the connection surface of the two connected insulating flanges leaks, the pressure-sealing device described in the patent cannot effectively seal the leak at the connection surface of the two insulating flanges. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an insulating joint leak stopper which can solve the leakage problem and maintain the insulating effect of the insulating joint.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] The insulating joint plugging device comprises a plugging sleeve, which is composed of two arc-shaped plates made of insulating material. The two arc-shaped plates are detachably fixed and sealed. The insulating joint composed of two insulating flanges is located in the plugging sleeve. The inner edge of the plugging sleeve is sealed with the outer edge of the insulating flange. The inner edge of the plugging sleeve is provided with an injection groove corresponding to the joint of the two insulating flanges. An injection valve connected with the injection groove is provided on the arc plate. A sealing injection is injected into the injection groove through the injection valve. The sealing injection can plug the leakage point at the joint of the two insulating flanges.

[0008] Specifically, fixing plates are fixed to both ends of the arc-shaped plate, and the fixing plates of the two arc-shaped plates are fixedly connected by connecting bolts.

[0009] Specifically, the opposite end surfaces of the two arc-shaped plates are sealed and connected by a sealant.

[0010] Specifically, both ends of the arc-shaped plate in the axial direction are provided with folded edges bent toward the axial direction of the arc-shaped plate, and the insulating joint is located between the two folded edges of the arc-shaped plate.

[0011] Specifically, the inner edge of the plugging sleeve is provided with a first sealing groove and a second sealing groove corresponding to the insulating flange, a sealing ring is installed in the first sealing groove, a sealing packing is installed in the second sealing groove, and the plugging sleeve is sealed and connected to the insulating flange through the sealing ring and the sealing packing.

[0012] Specifically, a plurality of the second sealing grooves are provided.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can seal the leaking points at the joints of the insulating flange, can carry out the leaking operation under pressure, and can quickly seal the leaking points.

[0015] 2. The plugging sleeve uses a sealing ring and a sealing packing to form a sealed connection structure with the insulating flange, and an injection groove is opened on the inner edge of the plugging sleeve corresponding to the joint between the two insulating flanges. The sealing injection is injected into the injection groove to seal the leaking point at the joint between the two insulating flanges, and the sealing effect is good.

[0016] 3. The arc plate is made of insulating material, and the insulation performance of the insulating joint can be guaranteed after the insulating joint is plugged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a side view of the leak stopper.

[0018] Figure 2 This is a schematic diagram of the coordination between the curved plate and the insulating joint.

[0019] The names of the parts in the attached drawings are:

[0020] 1 Curved plate

[0021] 2 Fixing plate

[0022] 3 Injection valve

[0023] 4 First sealing groove

[0024] 5 Sealing ring

[0025] 6 Second sealing groove

[0026] 7 Sealing Packing

[0027] 8 Injection tank

[0028] 9 Sealing Injection

[0029] 10 Hem

[0030] 11 Insulation flange

[0031] 12 pipes. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] Reference Figure 1-Figure 2 As shown, the insulating joint plugging device includes a plugging sleeve, which is composed of two arc-shaped plates 1, and the arc-shaped plates 1 are made of insulating materials. Both ends of the arc-shaped plates 1 are fixed with fixing plates 2, and the fixing plates 2 of the two arc-shaped plates 1 are fixedly connected by connecting bolts. The opposite end surfaces of the two arc-shaped plates 1 are sealed and connected by a sealant.

[0034] The insulating joint formed by the two insulating flanges 11 is located in the plugging sleeve. The inner edge of the plugging sleeve is sealed and connected to the outer edge of the insulating flange 11. The inner edge of the plugging sleeve is provided with an injection groove 8 corresponding to the joint of the two insulating flanges 11. The arc plate 1 is provided with an injection valve 3 connected to the injection groove 8. The sealing injection 9 is injected into the injection groove 8 through the injection valve 3. The sealing injection 9 can plug the leak at the joint of the two insulating flanges 11.

[0035] The inner edge of the plugging sleeve is provided with a first sealing groove 4 and a second sealing groove 6 corresponding to the insulating flange 11. A sealing ring 5 is installed in the first sealing groove 4, and a sealing packing 7 is installed in the second sealing groove 6. The plugging sleeve is sealed and connected to the insulating flange 11 through the sealing ring 5 and the sealing packing 7. A plurality of the second sealing grooves 6 are provided.

[0036] When the insulating joint is plugged under pressure on site, a rubber strip prefabricated with elastic sealing material is bonded on site around the pipe 12 to form a sealing ring 5, and the prepared sealing ring 5 is sleeved on the insulating flange 11. The packing is bonded on site around the pipe 12 to form a sealing packing 7. In this embodiment, one sealing ring 5 and two sealing packings 7 are sleeved on the outer side of the insulating flange 11.

[0037] Adjust the positions of the sealing ring 5 and the sealing packing 7 in the axial direction of the insulating flange 11. When the two arc-shaped plates 1 are connected to form a plugging sleeve outside the insulating joint, the sealing ring 5 is located in the corresponding first sealing groove 4, and the sealing packing 7 is located in the corresponding second sealing groove 6. At the same time, the injection groove 8 corresponds to the joint of the two insulating joints.

[0038] When the two arc plates 1 are connected, the two arc plates 1 are paired to form a plugging sleeve. Then the fixing plates 2 on the two arc plates 1 are fixedly connected by connecting bolts. When the two arc plates 1 are connected, sealant needs to be applied on the opposite end surfaces of the two arc plates 1.

[0039] The sealing injection agent 9 is injected into the injection groove 8 through the injection valve 3 by using an injection tool, and the leaking point at the joint of the two insulating flanges 11 is blocked by the sealing injection agent 9.

[0040] Embodiment 2:

[0041] Based on Example 1, refer to Figure 2 As shown, both ends of the arc plate 1 in the axial direction are provided with folded edges 10 bent toward the axial direction of the arc plate 1, and the insulating joint is located between the two folded edges 10 of the arc plate 1. The inner edge of the folded edge 10 contacts the outer edge of the pipe 12 on one side thereof.

[0042] In the process of connecting the two arc-shaped plates 1 to form a leak-proof sleeve, sealant can be applied to the inner edge of the folded edge 10. After the two arc-shaped plates 1 are connected to form the leak-proof sleeve, the inner edge of the folded edge 10 and the outer edge of the pipe 12 are sealed and connected by the sealant. When a leak occurs at the connection between the pipe 12 and the insulating flange 11, the leak-proof sleeve can plug the leak at the connection between the pipe 12 and the insulating flange 11.

[0043] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0045] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0046] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An insulating joint plugging device, including a plugging sleeve, characterized in that: The plugging sleeve is composed of two arc-shaped plates (1), which are made of insulating material. The two arc-shaped plates (1) are detachably fixed and sealedly connected. An insulating joint formed by two insulating flanges (11) is located inside the plugging sleeve. The inner edge of the plugging sleeve is sealedly connected to the outer edge of the insulating flange (11). An injection groove (8) corresponding to the joint of the two insulating flanges (11) is provided on the inner edge of the plugging sleeve. An injection valve (3) connected to the injection groove (8) is provided on the arc-shaped plate (1). A sealing injection (9) is injected into the injection groove (8) through the injection valve (3). The sealing injection (9) can plug the leak at the joint of the two insulating flanges (11).

2. The insulating joint plugging device according to claim 1, characterized in that: Fixed plates (2) are fixed to both ends of the arc-shaped plate (1), and the fixed plates (2) of the two arc-shaped plates (1) are fixedly connected by connecting bolts.

3. The insulating joint leak stopper according to claim 1, characterized in that: The opposite end surfaces of the two arc-shaped plates (1) are sealed and connected by means of a sealant.

4. The insulating joint leak stopper according to claim 1, characterized in that: Both ends of the arc-shaped plate (1) in the axial direction are provided with folded edges (10) bent in the axial direction of the arc-shaped plate (1), and the insulating joint is located between the two folded edges (10) of the arc-shaped plate (1).

5. The insulating joint leak stopper according to claim 1, characterized in that: The inner edge of the plugging sleeve is provided with a first sealing groove (4) and a second sealing groove (6) corresponding to the insulating flange (11); a sealing ring (5) is installed in the first sealing groove (4); a sealing packing (7) is installed in the second sealing groove (6); the plugging sleeve is sealedly connected to the insulating flange (11) via the sealing ring (5) and the sealing packing (7).

6. The insulating joint leak stopper according to claim 5, characterized in that: A plurality of the second sealing grooves (6) are provided.

7. The insulating joint leak stopper according to claim 4, characterized in that: The inner edge of the folded edge (10) contacts the outer edge of the pipe (12) on one side thereof.

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