Pressure leaking stoppage device

Abstract

The utility model relates to the technical field of pipeline connecting structures, and discloses an under-pressure leaking stoppage device which can effectively solve the problem that leakage occurs at the connecting position of an existing flange due to the fact that a sealing gasket is corroded. According to the main scheme, the plugging device comprises a connecting flange and a plugging ring arranged around the outer side of the connecting flange by a circle, a protrusion is arranged on the side, making contact with the flange, of the plugging ring, the protrusion is matched with a gap between the connecting flange, and a plurality of first glue injection holes are further formed in the plugging ring. The glue injection through hole extends from the outer side of the plugging ring to the side, matched with the connecting flange, of the protrusion.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection structures, in particular to a pressure plugging device. Background Art

[0002] Flange, also known as flange flange or flange, is a device for connecting shafts to each other, and is also a connecting device between pipes. For example, the connection between pumps and pipes, and the connection between valves and pipes all use flange connections; among them, when the pipes are directly connected, a sealing gasket will be added at the flange connection to ensure the sealing of the connection.

[0003] In chemical production, liquid materials in the factory are mostly transported by pipelines. Similarly, the connections between pipelines are also common flange connections. As liquid materials corrode the gaskets, the aging of the gaskets will be accelerated, which will cause the sealing effect of the gaskets to fail directly. The direct impact is leakage at the connections between pipelines.

[0004] When chemical materials leak, some of the leaked chemical materials are harmful substances, which may affect the health of employees, and the leakage will also cause material waste. At present, the conventional solution to leakage at the flange connection is to replace the gasket, but the process of replacing the gasket requires terminating the material transfer first, and replacing the gasket after emptying the pipeline has a great impact on production. Therefore, a method is needed to solve the leakage between flanges without affecting production efficiency. Utility Model Content

[0005] The utility model aims to provide a pressure plugging device to solve the problem of leakage at the connection caused by corrosion of the sealing gasket at the existing flange connection.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions: a pressure plugging device, including a connecting flange and a sealing ring arranged around the outer side of the connecting flange, a protrusion is provided on the side of the sealing ring in contact with the flange, and the protrusion cooperates with the gap between the connecting flange, and a plurality of first glue injection holes are also provided on the sealing ring, and the first glue injection holes extend from the outer side of the sealing ring to the side where the protrusion cooperates with the connecting flange.

[0007] The principles and advantages of this solution are: in actual application, after the pipeline is connected through the flange, a gap will appear between the two connecting flanges due to the sealing gasket and the structure of the flange itself; a sealing ring is arranged on the outside of the flange, wherein the protrusion on the side of the sealing ring in contact with the flange will extend into the connecting flanges to form a fit, which can play a role in plugging leaks; the injection hole opened on the sealing ring can be used for sealing glue injection, and the glue can be injected into the gap between the flanges on the outside of the sealing ring, effectively forming a sealed space, and reducing the risk of leakage at the flange connection; at the same time, if leakage occurs, the sealing ring can be disassembled and the glue can be re-injected without stopping material transportation, thereby ensuring production efficiency.

[0008] As an improvement, the sealing ring includes two sealing half rings, and a connecting ear is provided on one side of the connection of the sealing half rings. A connecting screw hole is opened on the connecting ear, and the connecting ear is connected by bolts; through the setting of the connecting ear and the screw hole thereon, the connection of the sealing half rings can be completed simply and conveniently.

[0009] As an improvement, a plurality of glue injection rods are arranged on the outer side of the sealing ring, and a second glue injection hole is opened on the glue injection rod along the axis, and the second glue injection hole is communicated with the first glue injection hole; through the setting of the glue injection rod and its second glue injection hole, it is convenient to inject glue into the gap between the connecting flanges, and it is also convenient to seal the glue injection hole to ensure the glue injection effect.

[0010] As an improvement, a sealing hole is provided on the injection rod, and the sealing hole is a threaded hole, which is arranged along the radial direction of the injection rod, and a sealing screw plug is arranged in the sealing hole; through the setting of the sealing screw plug, a good sealing effect can be achieved, avoiding leakage after the sealant is injected to affect the sealing effect.

[0011] As an improvement, there are four glue injection rods, which are evenly spaced and arranged around the sealing ring; such an arrangement allows glue to be injected from different positions, making the filling of the sealant more uniform.

[0012] As an improvement, the cross-sectional width of the protrusion gradually decreases toward the side close to the flange. Such a setting enables the protrusion to better fit the gap at the flange connection, thereby achieving a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a pressure leak plugging device according to an embodiment of the utility model.

[0014] Figure 2 It is a schematic side sectional structure diagram of the pressure leak plugging device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0015] The following is further described in detail through specific implementation methods:

[0016] The reference numerals in the drawings of the specification include: connecting flange 1, sealing ring 2, protrusion 3, connecting ear 4, first glue injection hole 5, glue injection rod 6, second glue injection hole 7, and sealing hole 8.

[0017] The embodiment is basically as shown in the attached Figure 1 and Figure 2 As shown:

[0018] The utility model provides a pressure plugging device, which is installed on the outside of the flange connection between pipelines to achieve the sealing of the flange connection. When leakage occurs at the flange connection, it can ensure that materials will not leak into the factory area, effectively preventing leakage at the flange connection.

[0019] The pressure plugging device of the present scheme comprises a connecting flange 1 and a sealing ring 2, wherein the sealing ring 2 is arranged on the outer side of the connecting flange and is arranged around the connecting flange 1; during implementation, after the connecting flange 1 is connected, there will be a gap between the two connecting flanges 1; wherein the sealing ring 2 is integrally formed with a protrusion 3 on the side in contact with the connecting flange 1; wherein the protrusion 3 is in a circular ring shape, and the cross-sectional width of the protrusion 3 gradually decreases radially toward the flange. Through such an arrangement, the protrusion 3 can be well matched with the gap between the connecting flanges 1, and play a certain sealing role.

[0020] During implementation, the sealing ring 2 includes two sealing half rings, wherein connecting ears 4 are welded or integrally formed on the outer sides of the two sealing half rings, and connecting holes for bolt connection are opened on the two connecting ears 4, and the two sealing half rings are connected by bolts; during implementation, in order to ensure the sealing between the two sealing half rings, a connecting protrusion 3 and a groove can be set at the connection of the two sealing half rings, and the sealing of the sealing half rings can be further ensured by the cooperation of the connecting protrusion 3 and the groove.

[0021] During implementation, a plurality of first glue injection holes 5 are opened on the sealing ring 2, wherein there are four first glue injection holes 5 which are evenly spaced on the sealing ring 2. Such an arrangement allows glue to be injected from different first glue injection holes 5, ensuring that the sealant is injected sufficiently evenly and having a better sealing effect.

[0022] During implementation, the first glue injection hole 5 extends from the outer side of the sealing ring 2 toward the radial direction of the connecting flange 1, and is connected to the gap between the end face of the protrusion 3 and the connecting flange 1, wherein, through the first glue injection hole 5, glue can be injected into the gap between the connecting flanges 1 to improve the sealing between the flanges, and when the sealing effect of the sealing gasket deteriorates and the material leaks out of the connecting flange 1, the pressure on the outside will increase due to the entry of the material, and the sealing ring 2 and the sealant can reduce the leakage through the pressure value on the inside while achieving secondary sealing, thereby achieving the effect of pressure sealing.

[0023] During implementation, a glue injection rod 6 is provided on the outer side of the sealing ring 2, and the glue injection rod 6 can be arranged on the outer side of the sealing ring 2 by welding or integral molding; specifically, the position and number of the glue injection rod 6 correspond to the first glue injection hole 5, wherein a second glue injection hole 7 is opened on the axis of the glue injection rod 6, wherein the first glue injection hole 5 and the second glue injection hole 7 are communicated; during implementation, a sealing hole 8 is also opened on the glue injection rod 6, wherein the sealing hole 8 is a threaded hole, which is arranged along the radial direction of the glue injection rod 6, and a sealing screw plug matched with the sealing hole 8 is also arranged at the sealing position, and the setting of the sealing screw plug can effectively avoid the problem of poor sealing effect caused by leakage of the sealant after injection.

[0024] The present solution provides a pressure plugging device, which cooperates with the gap between the sealing ring and the connecting flange 1 to achieve a good sealing effect; by setting the first injection hole 5 and the second injection hole 7, sealant can be injected into the gap between the connecting flange 1, and the sealing effect of the connecting flange 1 can be improved by the sealant. The setting of the first injection hole 5 and the second injection hole 7 also helps to evenly distribute the injected sealant, which is beneficial to improving the sealing effect.

[0025] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A pressure plugging device, characterized in that: It includes a connecting flange and a sealing ring arranged around the outer side of the connecting flange. A protrusion is arranged on the side of the sealing ring that contacts the connecting flange. The protrusion matches the gap between the connecting flange. A plurality of first glue injection holes are also opened on the sealing ring. The first glue injection holes extend from the outer side of the sealing ring to the side where the protrusion matches the connecting flange.

2. The pressure plugging device according to claim 1 is characterized in that: The blocking ring comprises two blocking half rings, one side of the blocking half rings being connected is provided with a connecting ear, a connecting screw hole is provided on the connecting ear, and the connecting ear is connected by bolts.

3. The pressure plugging device according to claim 1 is characterized in that: A plurality of glue injection rods are arranged on the outer side of the blocking ring, and a second glue injection hole arranged along the axis is opened on the glue injection rod, and the second glue injection hole is communicated with the first glue injection hole.

4. The pressure plugging device according to claim 3 is characterized in that: The glue injection rod is provided with a plugging hole, which is a threaded hole and is arranged along the radial direction of the glue injection rod. A plugging screw is arranged in the plugging hole.

5. The pressure plugging device according to claim 4 is characterized in that: There are four glue injection rods which are evenly spaced around the sealing ring.

6. The pressure plugging device according to claim 1 is characterized in that: The cross-sectional width of the protrusion gradually decreases toward the side close to the flange.

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