Pipeline safety cover

Abstract

A pipeline safety cover comprises a spherical part arranged at the position of a pipeline installation butt flange in a sleeving mode, annular sleeves are symmetrically arranged on the spherical part in a communicating mode, installation plates are arranged on the outer walls of the spherical part and the annular sleeves and connected and fixed through a plurality of screws and nuts, and an opening and closing valve is arranged on the spherical part. Inert gas is filled between the spherical piece and the periphery of the pipeline through an opening and closing valve. The pressure intensity of the filled inert gas is larger than that of the interior of the pipeline, leakage is avoided in the mode that the external pressure intensity is larger than that of the interior of the pipeline, in order to ensure the sealing degree of the spherical part, a pressure tester can be arranged on the spherical part, and real-time data of the interior pressure intensity of the spherical part can be obtained through the pressure tester. And therefore, the leakage part can be conveniently and timely overhauled.

Description

Technical Field

[0001] This utility model relates to the field of chemical safety technology, and in particular to a pipeline safety cover. Background Technology

[0002] To prevent environmental pollution, chemical gases or liquids are typically transported via pipelines, which are formed by connecting multiple pipe sections. Therefore, the protection of these pipe joints is crucial. Protecting pipe joints is an important method to ensure the safety and reliability of the connection and prevent leaks, corrosion, and other problems. Existing pipe joint protection methods include welding, flange connections, compression fittings, and butt fusion welding. Welding and flange connections are currently the most common methods. For the transportation of some flammable and explosive gases, flange connections are often chosen. However, this connection method is prone to deterioration of the seal at the joint during long-term service. If a gas leak occurs, it can lead to a major safety accident. Therefore, to improve the safety of pipe joints, the current practice is to regularly test and maintain the sealing performance of the pipe joints. Adding covers to the pipe joints can also reduce the risk of leakage, but currently used protective covers have poor sealing performance and are inconvenient to install and maintain. Utility Model Content

[0003] This utility model provides a pipe safety cover to overcome the shortcomings of the prior art and solve the problem of leakage at the connection of chemical pipes, which has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A pipeline safety cover includes a spherical component fitted onto the pipeline installation flange. Symmetrically connected and continuous rings are provided on the spherical component. Mounting plates are provided on the outer walls of the spherical component and the rings, and the mounting plates are connected and fixed by multiple screws and nuts. An on / off valve is provided on the spherical component, and an inert gas is filled between the spherical component and the outer circumference of the pipeline through the on / off valve. To facilitate leak detection, a non-toxic, non-irritating gas can be mixed into the inert gas. The pressure of the inert gas after filling is greater than the internal pressure of the pipeline. This external pressure greater than the internal pressure prevents leaks. Furthermore, to ensure the sealing of the spherical component, a pressure tester can be installed on it to obtain real-time data on its internal pressure, facilitating timely inspection and repair of leaks.

[0006] Furthermore, the inner wall of the ring is provided with a rubber ring, and the inner wall of the rubber ring is in close contact with the outer wall of the pipe. The rubber ring can improve the sealing effect after the ring is installed.

[0007] Furthermore, in order to further improve the sealing effect, an embedded ring is formed on the inner circumference of the ring sleeve, and an annular groove is formed on the outer circumference of the rubber ring, with the embedded ring being engaged in the annular groove.

[0008] Furthermore, to facilitate the injection of inert gas and ensure a sealing effect after the inert gas is injected, the aforementioned on / off valve includes a connecting pipe on the outer periphery of the spherical part. The outer end of the connecting pipe is provided with a first outer ring, and the outer end of the first outer ring is provided with a second outer ring. A movable pipe passes through the first and second outer rings. The outer periphery of the first and second outer rings is threaded. The inner end of the connecting pipe is formed with a conical hole, and the outer end of the conical hole is the smaller end. The inner end of the movable pipe is provided with an inner shell, which has a frustum-shaped structure and the outer end of the inner shell is the smaller end. The inner shell is located inside the conical hole, and multiple air holes are opened on the conical wall of the inner shell.

[0009] Furthermore, in order to prevent the movable tube from moving when the inert gas is injected, an inner ring is provided on the outer periphery of the outer end of the movable tube, and a rotating cap is fitted on the outer end of the movable tube. A connecting ring is provided on the rotating cap. When the inert gas is injected, the connecting ring is threaded to the second outer ring. The inner ring is located inside the connecting ring. A limiting outer ring is provided on the movable tube, and the limiting outer ring is located outside the rotating cap.

[0010] Furthermore, after the inert gas is injected, in order to improve the sealing effect, an outer cover is connected to the first outer ring by threads. An end ring is provided at the outer end of the outer cover, and a rotating head is rotatably provided on the end ring. An inner limiting plate is provided at the inner end of the rotating head, and an insertion post is provided on the inner limiting plate. The insertion post is connected to the outer end of the movable tube by threads, and a sealing ring is provided on the outer side of the movable tube.

[0011] Furthermore, in order to improve the sealing effect of the outer cover, a sealing protrusion is provided at the lower end of the first outer ring, and a sealing ring groove is provided on the sealing protrusion. A sealing head is provided at the inner end of the outer cover, and the outer wall of the sealing head is in close contact with the outer wall of the sealing ring groove.

[0012] The advantages of the above technical solution are:

[0013] This invention can effectively protect the connection points of chemical gas or liquid transportation pipelines to prevent leakage of chemical gas or liquid during transportation. At the same time, the sealing effect is ensured by introducing inert gas during protection. Attached Figure Description

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0015] Fig. 1 A three-dimensional structural diagram of one embodiment is shown.

[0016] Fig. 2 A cross-sectional view of one embodiment is shown.

[0017] Fig. 3 A magnified view of point A is shown. Detailed Implementation

[0018] like Figs. 1-3 As shown, a pipe safety cover includes a spherical component 2 fitted onto the mounting flange 10 of a pipe 1. A ring 20 is symmetrically and interconnected on the spherical component 2. A mounting plate 23 is provided on the outer wall of both the spherical component 2 and the ring 20. The mounting plate 23 is connected and fixed by multiple screws 24 and nuts. A rubber ring 22 is provided on the inner wall of the ring 20, and the inner wall of the rubber ring 22 is tightly fitted against the outer wall of the pipe 1. An embedded ring 21 is formed on the inner circumference of the ring 20, and an annular groove is formed on the outer circumference of the rubber ring 22, with the embedded ring 21 being engaged within the annular groove.

[0019] The spherical component 2 is equipped with an on / off valve, and the space between the spherical component 2 and the outer periphery of the pipe 1 is filled with inert gas through the on / off valve. The on / off valve includes a connecting pipe 3 located on the outer periphery of the spherical component 2. The outer end of the connecting pipe 3 is provided with a first outer ring 30, and the outer end of the first outer ring 30 is provided with a second outer ring 31. A movable pipe 35 passes through the first outer ring 30 and the second outer ring 31. The outer periphery of the first outer ring 30 and the second outer ring 31 is threaded. The inner end of the connecting pipe 3 is formed with a conical hole, and the outer end of the conical hole is the smaller end. The inner end of the movable pipe 35 is provided with an inner shell 33. The upper end of the inner shell 33 is formed with an upper conical shell 34 with a frustum-shaped structure, and the outer end of the inner shell 33 is the smaller end. The inner shell 33 is located inside the conical hole, and multiple air holes are opened on the conical wall of the upper conical shell 34.

[0020] An inner ring 36 is provided on the outer periphery of the outer end of the movable tube 35, and a rotating cap 38 is fitted on the outer end of the movable tube 35. A connecting ring 37 is provided on the rotating cap 38. When inert gas is injected, the connecting ring 37 is threaded to the second outer ring 31. The inner ring 36 is located inside the connecting ring 37. A limiting outer ring 39 is provided on the movable tube 35, and the limiting outer ring 39 is located outside the rotating cap 38.

[0021] An outer cover 44 is threadedly connected to the first outer ring 30. An end ring 43 is provided at the outer end of the outer cover 44. A rotating head 41 is rotatably provided on the end ring 43. An inner limiting plate 40 is provided at the inner end of the rotating head 41. An insertion post 4 is provided on the inner limiting plate 40. The insertion post 4 is threadedly connected to the outer end of the movable tube 35. A sealing ring 42 is provided on the outer side of the movable tube 35.

[0022] The lower end of the first outer ring 30 is provided with a sealing protrusion 32, and a sealing ring groove is provided on the sealing protrusion 32. The inner end of the outer cover 44 is provided with a sealing head 45, and the outer wall of the sealing head 45 is in close contact with the outer wall of the sealing ring groove.

[0023] In this embodiment, when installing the safety cover, first apply sealant to the outer wall of pipe 1, then wrap the rubber ring 22 around the sealant, and then apply a layer of sealant to the outer wall of the rubber ring 22. After the coating is completed, install the spherical part 2 and the ring 20.

[0024] During installation, the operator uses multiple screws 24 and nuts to install and fix the spherical part 2 and the ring 20.

[0025] After installation, the operator connects the connecting ring 37 to the second outer ring 31 via a thread. At this time, the inner shell 33 extends into the spherical part 2, and the air vent and movable tube 35 are connected to the internal space of the spherical part 2. Next, the operator connects the inflation tube to the outer end of the movable tube 35, and then fills the spherical part 2 with inert gas to create a certain pressure inside the spherical part 2. When the pressure inside the spherical part 2 reaches a certain value, the movable tube 35 is gradually pulled outward until the inert gas is fully filled. At this time, the pressure inside the spherical part 2 is greater than the external atmospheric pressure, causing the gas inside to act on the end of the inner shell 33, thereby causing the conical wall of the upper conical shell 34 to act on the inner wall of the conical hole.

[0026] Then the operator screws on the outer cover 44 and screws it onto the first outer ring 30. During the screwing process, the insert 4 also needs to be rotated and finally screwed onto the outer end of the movable tube 35, thus forming a seal on the outer end of the movable tube 35 through the insert 4.

[0027] In practical applications, the internal pressure of the spherical component 2 can be detected to determine whether there is a problem of chemical gas or liquid leakage, or inert gas can be added in a timely manner according to the preset pressure.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pipe safety cover, characterized in that, Includes a spherical part (2) fitted onto the flange (10) of the pipe (1), with a ring sleeve (20) symmetrically and connected on the spherical part (2), and an installation plate (23) on the outer wall of the spherical part (2) and the ring sleeve (20), and the installation plate (23) is connected and fixed by multiple screws (24) and nuts; The spherical part (2) is equipped with an on / off valve, and the spherical part (2) and the outer periphery of the pipe (1) are filled with inert gas through the on / off valve.

2. The pipe safety cover according to claim 1, characterized in that, The inner wall of the ring (20) is provided with a rubber ring (22), and the inner wall of the rubber ring (22) is in close contact with the outer wall of the pipe (1).

3. The pipe safety cover according to claim 2, characterized in that, The inner circumference of the ring (20) is formed with an embedded ring (21), and the outer circumference of the rubber ring (22) is formed with a ring groove, and the embedded ring (21) is engaged in the ring groove.

4. The pipe safety cover according to claim 1, characterized in that, The valve includes a connecting pipe (3) on the outer periphery of the spherical part (2). The outer end of the connecting pipe (3) is provided with a first outer ring (30) and the outer end of the first outer ring (30) is provided with a second outer ring (31). A movable pipe (35) is inserted inside the first outer ring (30) and the second outer ring (31). The outer periphery of the first outer ring (30) and the second outer ring (31) is threaded. The inner end of the connecting pipe (3) is formed with a conical hole. The outer end of the conical hole is the small end. The inner end of the movable pipe (35) is provided with an inner shell (33). The inner shell (33) has a frustum-shaped structure and the outer end of the inner shell (33) is the small end. The inner shell (33) is located inside the conical hole. Multiple air holes are opened on the conical wall of the inner shell (33).

5. The pipe safety cover according to claim 4, characterized in that, An inner ring (36) is provided on the outer periphery of the outer end of the movable tube (35), and a rotating cap (38) is provided on the outer end of the movable tube (35). A connecting ring (37) is provided on the rotating cap (38). When inert gas is injected, the connecting ring (37) is connected to the second outer ring (31) by a thread. The inner ring (36) is located inside the connecting ring (37). A limiting outer ring (39) is provided on the movable tube (35), and the limiting outer ring (39) is located outside the rotating cap (38).

6. The pipe safety cover according to claim 4, characterized in that, The first outer ring (30) is connected to an outer cover (44) by a thread. An end ring (43) is provided on the outer side of the outer cover (44). A rotating head (41) is rotatably provided on the end ring (43). An inner limit plate (40) is provided on the inner side of the rotating head (41). An insert (4) is provided on the inner limit plate (40). The insert (4) is connected to the outer side of the movable tube (35) by a thread. A sealing ring (42) is provided on the outer side of the movable tube (35).

7. The pipe safety cover according to claim 6, characterized in that, The lower end of the first outer ring (30) is provided with a sealing protrusion (32), and a sealing ring groove is provided on the sealing protrusion (32). The inner end of the outer cover (44) is provided with a sealing head (45), and the outer wall of the sealing head (45) is in close contact with the outer wall of the sealing ring groove.

Images