A gas barrier device for RTP pipe

Abstract

This invention relates to the field of RTP pipe technology, specifically to a gas barrier device for RTP pipes. Its structure includes a flange, a first annular interface, a second annular interface, and a barrier unit comprising a barrier component. The barrier unit structure includes an annular tear-off steel ring, a circular ring, a sleeve, a limiting component, a magnetic block, and a sealing gasket. The barrier unit connects the barrier component and the end of the RTP pipe. The staggered limiting component causes the annular tear-off steel ring to deform, forming a barrier to seal the gap between the RTP pipe and the barrier component, effectively blocking gas and preventing corrosion of the exposed reinforcing layer at the end of the RTP pipe. Under magnetic force, the limiting component can embed into the contact surface between the RTP pipe and the barrier component, resulting in high bonding strength and preventing the barrier component from twisting or separating from the RTP pipe. This effectively protects the end of the RTP pipe from gas, while also serving as a reminder to ensure timely replacement of the sealing gasket and prevent gas leakage that could lead to safety accidents.

Description

Technical Field

[0001] This invention relates to the field of RTP tubes, and more particularly to a gas barrier device for RTP tubes. Background Technology

[0002] Reinforced thermoplastic pipes (RTP) are high-strength, lightweight composite pipes. Their structure typically consists of a thermoplastic inner lining, a reinforcing layer (fiber or steel wire), and an outer cladding. They are suitable for high-pressure, long-distance fluid transportation and are widely used in many fields such as oil and gas field gathering and transportation, high-pressure water injection, CO2 flooding, and slurry transportation.

[0003] RTP pipe ends are usually connected by heat fusion or by using connectors. Although RTP pipes are corrosion resistant, their end reinforcement layers are directly exposed. When RTP pipes are used to transport corrosive gases such as H2S, CO2, or hydrogen, if the connection fails, the gas will penetrate into the reinforcement layer and cause corrosion. This not only significantly shortens the pipe's lifespan but also pollutes the environment and causes safety accidents. The purpose of this invention is to propose a device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a gas barrier device for an RTP tube to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a barrier component, wherein the barrier components are arranged in pairs, and the barrier component includes a flange, a first annular interface, a second annular interface and a barrier unit. By setting the barrier component, gas leakage from the end of the RTP pipe is prevented, thereby improving safety and preventing corrosion of the reinforcement layer inside the RTP pipe.

[0006] The first and second annular interfaces have their axes coincident and are arranged in the same direction on one side of the flange. The inner side of the first annular interface and the outer side of the second annular interface are respectively used to mate with the outer and inner sides of the RTP pipe. The barrier units are respectively arranged on the contact surfaces of the first and second annular interfaces and the RTP pipe. The barrier units are used to block the movement of gas in the gap between the barrier and the RTP pipe. At the same time, the barrier units can also improve the connection between the barrier and the end of the RTP pipe and improve the installation firmness of the barrier.

[0007] The barrier unit includes an annular tear-resistant steel, a circular ring, a sleeve, a limiting component, and a magnet. The axis of the annular tear-resistant steel coincides with the axes of the first and second annular interfaces. The circular ring is adjacent to the annular tear-resistant steel. The sleeve is rotatable and fitted onto the circular ring. The limiting component is connected to the sleeve. The magnet is mounted on the limiting component. The Curie point temperature of the magnet is greater than the melting point of the outer cladding, inner lining, first and second annular interfaces of the RTP tube. The annular tear-resistant steel refers to a ring-shaped structure made of tear-resistant steel. The thickness of the tear-resistant steel is 0.02–0.05 mm. In specific implementation, technicians can select different thicknesses of tear-resistant steel according to production process requirements or cost factors.

[0008] The barrier unit has two rings arranged in parallel. The limiting components on different rings face opposite directions, and the magnetic fields of the magnets on the limiting components face opposite directions. Under the action of an external magnetic field, the limiting components facing different directions are affected by the magnets with opposite magnetic field directions, causing them to move in opposite directions and deform the annular tear-off steel. This can improve the firmness and sealing of the limiting components and RTP tube. At the same time, the deformed annular tear-off steel can cut off the gap between the end of the RTP tube and the barrier component, preventing the end of the RTP tube from being corroded by gas.

[0009] As a further improvement to the above technical solution: one end of the annular tear-off steel extends inward and is located inside the ring, while the other end of the annular tear-off steel extends outward and is located outside the adjacent ring. This structural arrangement helps the annular tear-off steel to be deformed by the limiting component, thereby cutting off the gap between the RTP tube and the barrier component.

[0010] As a further improvement to the technical solution: the limiting component is composed of a longitudinal limiting plate and a transverse limiting plate that are perpendicular to each other. The magnet is located on the limiting component and is surrounded by the longitudinal limiting plate and the transverse limiting plate. The longitudinal limiting plate can improve the firmness of the blocking component in the longitudinal direction to prevent shaking, and the transverse limiting plate can improve the firmness of the blocking component in the transverse direction to prevent shaking. The purpose of the magnet being surrounded by the two is to prevent the magnet from falling off. In specific implementation, the limiting component can be made of metal material. The first annular interface and the second annular interface are made of the same material as the outer cladding and inner lining of the RTP pipe.

[0011] As an improvement to the aforementioned technical solution, it also includes a magnetic ring, which is sleeved on the first annular interface and forms a cylindrical pair with the first annular interface. When connecting the barrier and the RTP pipe, the magnetic ring drives the movement of the limiting component. The magnetic ring and magnetic block refer to ring-shaped or block-shaped components made of magnets. In specific implementation, technicians can adjust the magnetic strength by changing the material and specific size of the magnet.

[0012] As a further improvement to the above technical solution, it also includes a sealing gasket. The sealing gasket is used to mate with the flange of the barrier component on both sides. A cavity is formed inside the sealing gasket, and metal discs are placed on both sides of the cavity. The metal discs can be attracted by a magnetic ring. The purpose of setting the sealing gasket is to improve the airtightness of the fit between the barrier components and prevent gas from leaking from between the flanges. At the same time, the metal discs can be attracted by the magnetic ring to ensure that the sealing gasket can be tightly attached to the flange.

[0013] As a further improvement to the technical solution: the metal disc has slits arranged in a ring array. The metal disc can support the cavity and prevent it from collapsing. If the gasket is corroded at the gas contact surface or the gasket is corroded at the flange contact surface, the gas can enter the cavity through the slits on the metal disc, thus preventing the metal disc from blocking the corroded areas and preventing the gas transported by the RTP pipe from entering the cavity. The specific material used to make the metal disc is not the technical content that the applicant wants to protect, so it will not be disclosed further. In implementation, technicians can choose different types of metal according to actual needs, which will not have a substantial impact on the technical effect.

[0014] As an improvement to the aforementioned technical solution: a fixed tube and a movable tube are also provided on the sealing gasket. A metal disc has a raised edge, and the fixed tube passes through the raised edge and the sealing gasket. An anti-detachment block is formed at the inner end of the outer end of the movable tube. The movable tube and the fixed tube form a cylindrical pair. The gas transported by the RTP tube enters the cavity through the corrosion area. The air pressure acts on the movable tube in the cavity, squeezing it outward. Maintenance personnel can determine whether the sealing gasket needs to be replaced or maintained by observing whether the movable tube has moved outward. In specific implementation, a coating or other common anti-leakage measures in the field can also be applied to the surface of the fixed tube and the movable tube to improve the airtightness between the fixed tube and the movable tube and prevent gas leakage.

[0015] As an improvement to the aforementioned technical solution: the cavity is located outside the sealing gasket and away from the gas contact surface between the sealing gasket and the gas. The cavity principle can prevent the gas from being rapidly corroded and broken down by the gas.

[0016] As an improvement to the aforementioned technical solution: the contact surface between the flange and the gasket is recessed to form a groove that matches the shape of the gasket. The axis of the groove coincides with the axes of the first annular interface and the second annular interface. The groove can ensure the displacement of the gasket and ensure a stable fit between the gasket and the flange.

[0017] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

[0018] a. By setting up barrier units to connect the barrier components and the end of the RTP tube, the staggered limiting components drive the annular tear-off steel to deform, which can form a barrier to seal the gap between the RTP tube and the barrier components, effectively blocking the gas and preventing the reinforcement layer at the end of the RTP tube from being corroded.

[0019] b. Sealing gaskets can not only improve the airtightness of the sealing components when they are mated, but they also have an early warning function. When the sealing gasket is damaged and penetrates the cavity, the moving tube can be moved outward to serve as an indication, ensuring that the sealing gasket is replaced in time to avoid gas leakage.

[0020] c. Under the action of magnetic force, the limiting component can be embedded into the contact surface of the RTP tube and the barrier component. The high bonding strength can prevent the barrier component from twisting or separating from the RTP tube, effectively protecting the end of the RTP tube from the gas.

[0021] d. The RTP tube and the barrier can be separated by induction heating. When the barrier is damaged, it is easy to replace without cutting the RTP tube. This facilitates replacement and ensures that the end of the RTP tube is protected by the barrier. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention (Example 1);

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention (Example 2);

[0025] Figure 3 This is a schematic diagram of the partially truncated three-dimensional structure of the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of a specific area;

[0027] Figure 5 This is a schematic diagram of the partially truncated front view of the present invention;

[0028] Figure 6 for Figure 5 Enlarged view of a specific area;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the metal disk;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the ring;

[0031] Figure 9 for Figure 8 Enlarged view of a specific area;

[0032] Figure 10 This is a partial schematic diagram of the deformation of the annular hand-torn steel.

[0033] In the diagram: Barrier component-1, Flange-101, First annular interface-102, Second annular interface-103, Barrier unit-104, Annular tear-resistant steel-105, Circular ring-106, Sleeve-107, Limiting component-108, Longitudinal limiting plate-108a, Transverse limiting plate-108b, Magnet block-109, Magnet ring-1010, Sealing gasket-1011, Cavity-1012, Metal disc-1013, Gap-1014, Fixed tube-1015, Moving tube-1016, Raised edge-1017, Anti-detachment block-1018, Groove-1019 Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0035] Please see Figure 1 , 4 and Figure 8-10 The present invention provides a gas barrier device for an RTP pipe, including a barrier element 1, which is arranged in pairs. The barrier element 1 includes a flange 101, a first annular interface 102, a second annular interface 103, a barrier unit 104, and a magnetic ring 1010.

[0036] The first annular interface 102 and the second annular interface 103 have their axes coincide and are arranged in the same direction on one side of the flange 101. The inner side of the first annular interface 102 and the outer side of the second annular interface 103 are used to cooperate with the outer and inner sides of the RTP pipe.

[0037] The barrier unit 104 is respectively disposed on the contact surface between the first annular interface 102 and the second annular interface 103 and the RTP tube. The barrier unit 104 includes an annular tear-off steel 105, a circular ring 106, a sleeve 107, a limiting member 108 and a magnet 109. The barrier unit 104 has two circular rings 106 arranged in parallel. The limiting members 108 on different circular rings 106 face opposite directions and the magnetic field directions of the magnets 109 on the limiting members 108 are opposite.

[0038] The axis of the annular tearable steel 105 coincides with the axes of the first annular interface 102 and the second annular interface 103. One end of the annular tearable steel 105 extends inward and is located inside the ring 106, while the other end extends outward and is located outside the adjacent ring 106. The ring 106 is adjacent to the annular tearable steel 105. The sleeve 107 is rotatably fitted on the ring 106. The limiting member 108 is connected to the sleeve 107 and consists of mutually perpendicular longitudinal limiting plates 1. The 08a and the transverse limiting plate 108b are connected to form a magnet block 109 located on the limiting member 108 and surrounded by the longitudinal limiting plate 108a and the transverse limiting plate 108b. The magnet block 109 is installed on the limiting member 108. The Curie point temperature of the magnet block 109 is greater than the melting point of the outer cladding layer, inner lining layer, first annular interface 102, and second annular interface 103 of the RTP tube. The magnet ring 1010 is sleeved on the first annular interface 102 and forms a cylindrical pair with the first annular interface 102. Example 2

[0039] Please see Figure 2-10 The present invention provides a gas barrier device for an RTP pipe, including a barrier element 1, which is arranged in pairs. The barrier element 1 includes a flange 101, a first annular interface 102, a second annular interface 103, a barrier unit 104, a magnetic ring 1010, and a sealing gasket 1011.

[0040] The first annular interface 102 and the second annular interface 103 have their axes coincide and are arranged in the same direction on one side of the flange 101. The inner side of the first annular interface 102 and the outer side of the second annular interface 103 are used to cooperate with the outer and inner sides of the RTP pipe.

[0041] The barrier unit 104 is respectively disposed on the contact surface between the first annular interface 102 and the second annular interface 103 and the RTP tube. The barrier unit 104 includes an annular tear-off steel 105, a circular ring 106, a sleeve 107, a limiting member 108 and a magnet 109. The barrier unit 104 has two circular rings 106 arranged in parallel. The limiting members 108 on different circular rings 106 face opposite directions and the magnetic field directions of the magnets 109 on the limiting members 108 are opposite.

[0042] The axis of the annular tearable steel 105 coincides with the axes of the first annular interface 102 and the second annular interface 103. One end of the annular tearable steel 105 extends inward and is located inside the ring 106, while the other end extends outward and is located outside the adjacent ring 106. The ring 106 is adjacent to the annular tearable steel 105. The sleeve 107 is rotatably fitted on the ring 106. The limiting member 108 is connected to the sleeve 107 and consists of mutually perpendicular longitudinal limiting plates. The 108a and the transverse limiting plate 108b are connected to form a magnetic block 109 located on the limiting member 108 and surrounded by the longitudinal limiting plate 108a and the transverse limiting plate 108b. The magnetic block 109 is installed on the limiting member 108. The Curie point temperature of the magnetic block 109 is greater than the melting point of the outer cladding layer, inner lining layer, first annular interface 102, and second annular interface 103 of the RTP tube. The magnetic ring 1010 is sleeved on the first annular interface 102 and forms a cylindrical pair with the first annular interface 102.

[0043] The sealing gasket 1011 is used to mate with the flange 101 of the barrier 1 on both sides. The contact surface between the flange 101 and the sealing gasket 1011 is recessed to form a groove 1019 that matches the shape of the sealing gasket 1011. The axis of the groove 1019 coincides with the axis of the first annular interface 102 and the second annular interface 103. A cavity 1012 is formed inside the sealing gasket 1011. The cavity 1012 is located outside the sealing gasket 1011 and away from the gas contact surface of the sealing gasket 1011. Metal discs 1013 are placed on both sides of the cavity 1012. The metal discs 1013 can be attracted by the magnetic ring 1010. The metal discs 1013 have slits 1014 distributed in a ring array.

[0044] The sealing gasket 1011 is also provided with a fixed tube 1015 and a movable tube 1016. A metal disc 1013 has a raised edge 1017 on its edge. The fixed tube 1015 passes through the raised edge 1017 and the sealing gasket 1011. The outer end of the movable tube 1016 is sealed and the inner end is formed with an anti-detachment block 1018. The movable tube 1016 and the fixed tube 1015 form a cylindrical pair.

[0045] Working principle: The RTP pipe end is installed and fitted between the first annular interface 102 and the second annular interface 103 on the barrier 1. Then, the flange 101 is connected by bolts and nuts to complete the end connection of adjacent RTP pipes.

[0046] For Embodiments 1 and 2, the RTP tube end is embedded in the gap between the first annular interface 102 and the second annular interface 103 and heat-fused together, then cooled. A high-frequency coil is then used to induction heat the outside of the annular tearable steel 105, causing the outer cladding, inner lining, first annular interface 102, and second annular interface 103 around the annular tearable steel 105 to enter a heat-fused state. The magnet ring 1010 is moved to the ring 106. The magnet blocks 109 attracted to the magnet ring 1010 will move the limiting member 108 towards the magnet ring 1010, while the magnet blocks 109 repelling the magnet ring 1010 will move the limiting member 108 away from the magnet ring 1010. During this process, the limiting member 108 will be staggered between the first annular interface 102 and the second annular interface 103, resulting in a strong connection that prevents the RTP tube end from twisting or separating on the barrier 1. Simultaneously, the limiting member 108 can compress the annular tearable steel 105 during this process, causing it to deform (as per the attached specification). Figure 10 As shown, the deformed annular tear-resistant steel 105 can seal the gap between the RTP pipe end and the barrier 1, preventing corrosive gases from passing through, thereby effectively protecting the RTP pipe end from gas corrosion of the reinforcing layer.

[0047] After the barrier 1 is damaged, a high-frequency coil can be used to continuously heat the outside of the annular tear-resistant steel 105, so that the outer cladding, inner lining, and the contact surfaces of the first annular interface 102 and the second annular interface 103 are completely melted. Then, an annular magnet with the opposite magnetic pole direction to the magnet ring 1010 is placed at the ring 106. Through the interaction between the magnet block 109 and the magnet, the moving and closing limiting members 108 are reversed, so as to prevent the limiting members 108 from affecting the separation of the barrier 1 from the end of the RTP tube. At this time, the barrier 1 can be easily removed from the end of the RTP tube, so as to replace the new barrier 1 and ensure that the end of the RTP tube is protected from the corrosion of the reinforcing layer by gas.

[0048] In Embodiment 2, the sealing gasket 1011 installed between flanges 101 can improve airtightness and prevent gas from leaking through the gap. When the sealing gasket 1011 is corroded by gas, the corrosion can spread irregularly from the gasket 1011 to the gas contact surface. When the corrosion penetrates the cavity 1012, the gas pressure in the RTP pipeline can be transmitted to the cavity 1012. Under the action of gas pressure, the moving pipe 1016 is pushed out, which makes it easy for maintenance personnel to know whether the sealing gasket 1011 needs to be replaced or maintained, and can avoid safety accidents such as gas leakage caused by corrosion of the sealing gasket 1011.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas barrier device for an RTP tube, characterized in that, include: Barrier (1), the barrier (1) being provided in pairs; The barrier (1) includes a flange (101), a first annular interface (102), a second annular interface (103), and a barrier unit (104). The first annular interface (102) and the second annular interface (103) have their axes coincide and are arranged in the same direction on one side of the flange (101). The inner side of the first annular interface (102) and the outer side of the second annular interface (103) are used to cooperate with the outer and inner sides of the RTP pipe. The barrier unit (104) is respectively disposed on the contact surface between the first annular interface (102) and the second annular interface (103) and the RTP tube; The barrier unit (104) includes an annular tear-off steel (105), a circular ring (106), a sleeve (107), a limiting member (108), and a magnet (109). The axis of the annular tear-off steel (105) coincides with the axes of the first annular interface (102) and the second annular interface (103); The ring (106) is adjacent to the annular tear-away steel (105); The sleeve (107) is rotatable and is fitted onto the ring (106); The limiting member (108) is connected to the sleeve (107), and the magnet (109) is installed on the limiting member (108). The Curie point temperature of the magnet (109) is greater than the melting point of the outer cladding, inner lining, first annular interface (102), and second annular interface (103) of the RTP tube. The number of the rings (106) of the barrier unit (104) is 2 and they are arranged in parallel. The limiting members (108) on different rings (106) face opposite directions and the magnetic field direction of the magnet (109) on the limiting member (108) is opposite.

2. The gas barrier device for an RTP tube according to claim 1, characterized in that: One end of the annular tear-off steel (105) extends inward and is located inside the ring (106), while the other end of the annular tear-off steel (105) extends outward and is located outside the adjacent ring (106).

3. A gas barrier device for an RTP tube according to any one of claims 1 or 2, characterized in that: The limiting member (108) is composed of a longitudinal limiting plate (108a) and a transverse limiting plate (108b) that are perpendicular to each other. The magnet block (109) is located on the limiting member (108) and is surrounded by the longitudinal limiting plate (108a) and the transverse limiting plate (108b).

4. A gas barrier device for an RTP tube according to any one of claims 1 or 2, characterized in that: It also includes a magnet ring (1010), which is sleeved on the first annular interface (102) and forms a cylindrical pair with the first annular interface (102).

5. A gas barrier device for an RTP tube according to claim 4, characterized in that: It also includes a sealing gasket (1011), which is used on both sides to mate with the flange (101) of the barrier (1). A cavity (1012) is formed inside the sealing gasket (1011), and a metal disc (1013) is placed on both sides of the cavity (1012). The metal disc (1013) can be attracted by the magnetic ring (1010).

6. A gas barrier device for an RTP tube according to claim 5, characterized in that: The metal disc (1013) has slots (1014) arranged in a ring array.

7. A gas barrier device for an RTP tube according to claim 6, characterized in that: The sealing gasket (1011) is also provided with a fixed tube (1015) and a movable tube (1016). A metal disc (1013) has a raised edge (1017) on its edge. The fixed tube (1015) passes through the raised edge (1017) and the sealing gasket (1011). The outer end of the movable tube (1016) is sealed and the inner end is formed with an anti-detachment block (1018). The movable tube (1016) and the fixed tube (1015) form a cylindrical pair.

8. A gas barrier device for an RTP tube according to any one of claims 5-7, characterized in that: The cavity (1012) is located outside the sealing gasket (1011) and away from the gas contact surface of the sealing gasket (1011).

9. A gas barrier device for an RTP tube according to any one of claims 5-7, characterized in that: The flange (101) and the sealing gasket (1011) have a recessed groove (1019) that matches the shape of the sealing gasket (1011). The axis of the groove (1019) coincides with the axis of the first annular interface (102) and the second annular interface (103).

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