Line blowout preventer

Abstract

This invention discloses a pipeline splash prevention device, comprising a central pipe and a protective pipe. Two or more combined pipe clamps are provided outside the central pipe. Each combined pipe clamp includes two or more clamping plates. Each clamping plate includes a middle plate, an insert plate fixed to one side of the middle plate, and a guide block on the other side. The insert plate and the guide block are arranged at an angle in the circumferential direction. A locking tooth is fixed to the outer side of each insert plate. The guide block has a circumferential hole corresponding to the insert plate. A radial limiting groove communicating with the respective circumferential hole is provided on the radially outer side of the guide block. The radial limiting groove is located between the middle plate and the circumferential hole in the circumferential direction. The insert plate of each clamp passes through the circumferential hole of the adjacent clamping plate. The protective pipe is placed outside each support plate. This invention has the advantages of good sealing performance and high safety. It can be installed on-site, is simple and quick to install, and has a wide range of applications.

Description

Technical Field

[0001] This invention relates to a pipeline anti-splash device, particularly an anti-splash device for steam turbine auxiliary oil pipes. Background Technology

[0002] When a steam turbine is running, its auxiliary oil pipes carry high-temperature, high-pressure, and flammable media. Since the pipe diameter is generally small and the pipe sections are connected by threads, splash guards are typically installed on the outside of the pipes to prevent hot oil leakage and splashing at the pipe joints. Currently, commonly used splash guards are made of polytetrafluoroethylene (PTFE) and are installed as protective sleeves at the pipe joints. This can, to some extent, prevent burns caused by hot oil splashing. However, with technological advancements, the pressure of hot oil inside the pipes has increased, leading to increasingly stringent splash protection requirements. The existing technology is no longer sufficient. If a leak occurs and the splash volume is excessive, the poor sealing at both ends of the original protective sleeve allows oil to flow along the outer wall of the pipe and drip onto the ground. Furthermore, since oil is flammable, if not handled promptly, it can easily cause a fire, resulting in poor safety. In addition, the protective sleeve is an integral piece fixed to the pipe and must be pre-formed on the pipeline, making on-site installation inconvenient. Moreover, it can only be used for oil pipes of one outer diameter, limiting its application. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings of the existing technology by providing a pipeline anti-splash device that has the advantages of good sealing performance and high safety, can be installed on-site, is simple and quick to install, and has a wide range of applications.

[0004] To achieve the above objectives, the present invention provides a pipeline anti-splash device, comprising a central pipe and a protective pipe, wherein the central pipe is connected by several pipe joints; characterized in that two or more combined pipe clamps are provided outside the central pipe, each combined pipe clamp comprising two or more clamping plates, each clamping plate comprising a middle plate, one or more insert plates fixed to one side of the middle plate and a guide block on the other side, and a radial support plate fixed to the outside of the middle plate, the insert plates and the guide blocks being arranged at an angle in the circumferential direction, one or more locking teeth being fixed to the outside of each insert plate, the guide block having an inner arc surface and one or more circumferential holes corresponding to the insert plates, and a connecting rod communicating with each circumferential hole being provided on the radially outer side of the guide block. The radial limiting grooves described above are located circumferentially between the intermediate plate and the circumferential holes. A guide block is fixedly connected to a hook located at the tail of each circumferential hole, the hook being radially outer and corresponding to a tooth. The insert plate of each clamp passes through the circumferential hole of the adjacent clamp, with at least one tooth located within the radial limiting groove of the adjacent clamp. Each clamp is equipped with a matching adjusting plate, and several parallel stops are fixedly connected to the inner side of each insert plate, the stops being located axially on the insert plate. Each guide block has an axial sliding groove communicating with the radial limiting groove. Several guide posts are fixedly mounted on one side of the adjusting plate, the guide posts forming a certain angle with the axial direction of the insert plate. Protective tubes are placed outside each support plate.

[0005] This invention relates to a combined pipe clamp composed of several clamping plates. During installation, simply place the insert plate of each clamping plate into the circumferential hole of the adjacent clamping plate. The locking teeth engage with the end faces of the circumferential holes of the adjacent clamping plates to achieve positioning. Each support plate supports the protective pipe. In the event of a leak in the central pipe, the leaked material is contained within the protective pipe and can be recovered, offering advantages such as good sealing and high safety. This device can be installed on-site, and installation is convenient and quick. By assembling with different numbers of clamping plates, it can be applied to central pipes of different outer diameters, thus having a wide range of applications. The adjusting plate is inserted from the axial groove into the radial limiting groove. Its several guide posts gradually contact the several parallel stops of the insert plate in the radial limiting groove, causing the two clamping plates to expand or contract in a certain circumferential direction, finely adjusting the inner diameter of the pipe clamp, and simultaneously locking the two clamping plates to fix the pipe clamp. The engagement of the locking teeth and hooks improves the clamping tightness.

[0006] As a further improvement of the present invention, the protective pipe includes several overlapping pipe sections, each overlapping pipe section having an annular inner groove at one end and an annular outer protrusion at the other end, with the inner groove and outer protrusion of two adjacent overlapping pipe sections overlapping each other; this facilitates the on-site installation of the protective pipe.

[0007] In summary, this invention has the advantages of good sealing performance and high safety, and can be installed on-site. It is simple, quick to install, and has a wide range of applications. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0009] Figure 2 for Figure 1 A 3D view of the disassembled modular pipe clamp.

[0010] Figure 3 for Figure 2 The main view.

[0011] Figure 4 Figure 2 A 3D view of a single clamping plate.

[0012] Figure 5 for Figure 4 Main view.

[0013] Figure 6 for Figure 5 The right view.

[0014] Figure 7 for Figure 6 Top view.

[0015] Figure 8 for Figure 6 A bottom view.

[0016] Figure 9 for Figure 6 AA sectional view.

[0017] Figure 10 This is a 3D view of the adjustment plate.

[0018] Figure 11 for Figure 10 The main view.

[0019] Figure 12 for Figure 1 Front view of the central protective tube. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figures 1 to 12As shown, the pipeline anti-splash device of this embodiment includes a central pipe 21, a protective pipe 31, and two combined pipe clamps 1 disposed outside the central pipe 21. The central pipe 21 is connected by several pipe joints 22. The protective pipe 31 includes several overlapping pipe sections 32. One end of each overlapping pipe section 32 is provided with an annular inner groove 33, and the other end is provided with an annular outer protrusion 34. The inner groove 33 and outer protrusion 34 of two adjacent overlapping pipe sections overlap each other. Each combined pipe clamp 1 includes four connected clamping plates. Each clamping plate includes a middle plate 2, two insert plates 3 fixed to one side of the middle plate and a guide block 4 on the other side, and a radial support plate 5 integrally fixed to the outer side of the middle plate 2. The insert plates 3 and the guide block 4 are arranged at an angle in the circumferential direction. Five locking teeth 6 are fixed to the outer side of each insert plate 3, and six parallel stop blocks 7 are fixed to the inner side of each insert plate 3. The stop blocks 7 are located at... The axial direction of the insert plate 3; the guide block 4 has an inner arc surface and two circumferential holes 8 corresponding to the insert plate 3. Two radial limiting grooves 9 communicating with their respective circumferential holes 8 are provided on the radially outer side of the guide block 4. The radial limiting grooves 9 are located circumferentially between the intermediate plate 2 and the circumferential holes 8. A hook 10 is fixedly connected to the guide block 4 at the tail of each circumferential hole 8. The hook 10 is located radially outer of the circumferential hole 8 and corresponds to the locking tooth 6. Each guide block 4 has an axial sliding groove 11 communicating with the radial limiting groove 9. The insert plate 3 of each clamping plate passes through the circumferential holes 8 of adjacent clamping plates, and one of its locking teeth 6 is located in the radial limiting groove 9 of the adjacent clamping plate. This locking tooth 6 is limited by the corresponding hook 10. Each clamping plate has a matching adjusting plate 12. Several inclined guide posts 13 are fixedly provided on one side of the adjusting plate 12. The guide posts 13 form a certain angle with the axial direction of the insert plate 3. The adjusting plate 12 passes through the guide block 4 via the axial sliding groove 11 and the radial limiting groove 9; the protective tube 31 is placed outside each support plate 5;

[0022] Each clamp is made of plastic (PVC) and has a certain degree of toughness. The combined pipe clamp 1 of this invention is composed of several clamps. During installation, simply place the insert plate 3 of each clamp into the circumferential hole 8 of the adjacent clamp. The locking teeth 6 cooperate with the locking hooks 10 in the tail of the circumferential hole 8 of the adjacent clamp to achieve limiting and prevent slippage. Each support plate 5 supports the protective pipe 31. Once the central pipe 21 leaks, flammable leaked materials such as high-temperature oil are all inside the protective pipe 31 and can be recovered to prevent dripping. It has the advantages of good sealing and high safety. This device can be installed on site and is simple and quick to install. By using different numbers of clamps for assembly and different locking teeth 6 and locking hooks 10, pipe clamps with different inner diameters can be obtained to meet the needs of central pipes 21 with different outer diameters, and the application range is wide.

[0023] The adjusting plate 12 is inserted into the radial limiting groove 9 from the axial sliding groove 11. Its several guide posts 13 gradually come into contact with the parallel stop block 7 of the insert plate 3 in the radial limiting groove 9. The inclined guide posts 13 push one clamping plate to move in the circumferential direction, so that the two clamping plates expand or contract in the circumferential direction to make a certain displacement, and finely adjust the inner diameter of the pipe clamp. At the same time, the adjusting plate 12 acts as a pin between the insert plate 3 and the guide block 4 of the other clamping plate to prevent the two adjacent clamping plates from sliding in the circumferential direction, lock the two adjacent clamping plates, and thus fix the pipe clamp.

Claims

1. A pipeline anti-splash device, comprising a central pipe and a protective pipe, wherein the central pipe is connected by a plurality of pipe joints; characterized in that... Two or more combined pipe clamps are provided outside the central pipe. Each combined pipe clamp includes two or more clamping plates. Each clamping plate includes a middle plate, one or more insert plates fixed to one side of the middle plate and a guide block on the other side, and a radial support plate fixed to the outside of the middle plate. The insert plates and guide blocks are set at an angle in the circumferential direction. One or more locking teeth are fixed to the outside of each insert plate. The guide block has an inner arc surface and one or more circumferential holes corresponding to the insert plates. One or more radial limiting grooves communicating with their respective circumferential holes are provided on the radially outer side of the guide block. The radial limiting grooves are located in the circumferential direction between the middle plate and the guide block. Between the circumferential holes, guide blocks are fixedly connected with hooks located at the tail of each circumferential hole. The hooks are located radially outside the circumferential holes and correspond to the locking teeth. The insert plate of each clamp passes through the circumferential holes of the adjacent clamp, and at least one locking tooth is located in the radial limiting groove of the adjacent clamp. Each clamp is provided with a matching adjusting plate. Several parallel stops are fixedly connected to the inner side of each insert plate. The stops are located in the axial direction of the insert plate. Each guide block is provided with an axial sliding groove communicating with the radial limiting groove. Several guide posts are fixedly provided on one side of the adjusting plate. The guide posts form a certain angle with the axial direction of the insert plate. The protective tube is placed outside each support plate.

2. The pipeline splash prevention device as described in claim 1, characterized in that... The protective pipe includes several overlapping sections. Each overlapping section has an annular inner groove at one end and an annular outer groove at the other end. The inner groove and outer groove of two adjacent overlapping sections overlap each other.

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