A rapid installation device for large-diameter special composite RTP pipelines

Abstract

This invention relates to the field of RTP pipelines, specifically a rapid installation device for large-diameter special composite RTP pipelines. The device includes a first end, a second end, a limiting ring, a connecting device, a first ring, and a second ring. A connecting ring is formed on the first end, with a first limiting groove and a second limiting groove formed on its inner and outer sides, respectively. A connecting cavity that mates with the connecting ring is formed on the second end. The limiting rings are respectively embedded inside and outside the connecting cavity. The connecting device is respectively disposed on the first and second limiting grooves, and each device is equipped with a magnet with opposite magnetic properties on the first and second limiting grooves. The first ring is fitted onto the first limiting groove, and the second ring is disposed within the second limiting groove. The outer side of the first ring and the inner side of the second ring are respectively provided with thermoplastic bimetallic strips. This device enables rapid connection of pipelines with diameter differences even under eccentric conditions, solving the problem of uneven stress while improving pipeline installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of RTP pipelines, and in particular to a rapid installation device for large-diameter special composite RTP pipelines. Background Technology

[0002] Reinforced thermoplastic pipes (RTP) are large-diameter composite pipes with high-strength fibers or metals as reinforcing layers. They typically employ a three-layer structure, with the inner and outer layers being thermoplastic plastics and the middle layer containing reinforcing materials such as aramid fibers, glass fibers, or steel wires. They are a type of special pipe designed specifically to solve transportation problems under extreme industrial environments (such as severe abrasion, strong corrosion, and high temperatures), and are widely used to transport various high-temperature, high-pressure, flammable, and corrosive chemical fluids.

[0003] The common method for connecting RTP pipe ends is to use mechanical connections (such as flanges, clamps, etc.). Mechanical connections are easily affected by the alignment of the pipe axis and uneven distribution of bolt preload on the connectors, resulting in uneven distribution of the sealing pressure gradient at the RTP pipe end. In high-pressure environments, local leakage is likely to occur. Secondly, if there is a thickness difference in the pipe diameter during connection, it will also lead to stress concentration at the connection. These reasons are important reasons affecting the accuracy of pipe connection and reducing installation efficiency. The purpose of this invention is to propose a new RTP pipe connection structure to solve the above problems and improve pipe installation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid installation device for large-diameter special composite RTP pipelines 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 first end, a second end, a limiting ring, a connecting device, a first ring and a second ring, wherein a connecting ring is formed on the first end, and a first limiting groove and a second limiting groove are formed on the inner and outer sides of the connecting ring respectively. Here, the first end and the second end refer to the ends of different pipes. The first and second are only used to indicate the difference and have no practical significance.

[0006] A connecting cavity is formed on the second end that can mate with the connecting ring. The volume of the connecting cavity is larger than the volume of the connecting ring, and the connecting cavity is used for the insertion of the connecting ring.

[0007] The limiting ring is made of metal and is embedded in the inner and outer sides of the connecting cavity. The limiting ring refers to the ring-shaped component that plays a limiting role. The specific metal material used for the limiting ring is not a necessary technical feature or the technical content that the applicant wants to protect. Technicians can choose different types of metal materials according to actual needs. The purpose of using metal material is to heat the limiting ring through a high-frequency coil.

[0008] The connecting devices are respectively set on the first limiting groove and the second limiting groove. The connecting devices are equipped with magnets, and the magnets on the first limiting groove and the second limiting groove have opposite magnetic properties. Under the action of magnetic force, the connecting devices can be fixed with the limiting ring. The connecting ring and the connecting cavity are combined through the connecting devices. The connecting devices are made of metal.

[0009] The first ring is sleeved on the first limiting groove, and the second ring is disposed in the second limiting groove. Both the first and second rings are made of metal. A bimetallic strip is disposed on the outer side of the first ring and the inner side of the second ring, respectively. The bimetallic strip can abut against the connecting cavity. The bimetallic strip is distributed in a rotationally symmetrical manner with the center of rotation of the first and second rings as the center of rotation. The first and second rings are made of metal. The bimetallic strip refers to a sheet-like component made of bimetal. Bimetal is a material made of two metals with different coefficients of thermal expansion in the prior art. Due to the different coefficients of thermal expansion, the bimetal will bend when heated. The degree of bending of the bimetallic strip can be changed by changing the thickness and material of the metal constituting the bimetal.

[0010] To optimize the above technical solution, the following measures are further taken: The connecting device includes a fixed ring and a swing rod. The fixed ring is embedded in the connecting ring and has notches evenly distributed around its circumference. The middle part of the swing rod is located in the notch and is hinged to the fixed ring. One end of the swing rod is connected to a magnet block, and the other end of the swing rod is used to hold the limiting ring. The magnet block refers to a block-shaped component made of magnets. Technicians can change the magnetic force between the magnet block and the external magnet block by changing the magnet material and the size of the magnet.

[0011] As a further improvement to the above technical solution: a ring-shaped groove is formed on the limiting ring, and a bent part is formed at the end of the swing rod that mates with the limiting ring. The bent part locks the groove to fix the connecting device and the limiting ring. In specific implementation, the surface of the limiting ring is sanded to improve its surface friction and suppress slippage.

[0012] As a further improvement to the technical solution: the first ring and the second ring are adjacent to the bent part. When the temperature of the first ring and the second ring drops, the hot bimetallic strip changes from a bent state to a straight state, which can abut against the bent part and the limiting ring, preventing the bent part from separating from the limiting ring and ensuring the fixing strength of the connecting device and the limiting ring.

[0013] As an improvement to the aforementioned technical solution: along the direction away from the bend, the thickness of the limiting ring gradually increases, making the longitudinal section of the limiting ring wedge-shaped.

[0014] Furthermore: A first flange is formed on the side of the first end, and a second flange is formed on the second end. For RTP pipes with concentric alignment of the shafts, the bolt assembly passing through the first flange and the second flange can improve the connection strength between the first end and the second end and enhance safety protection.

[0015] Preferably, a slope is also formed on the inner side of the first end. The slope and the first flange can seal the connection cavity. The first flange can block the external environment from eroding the connection cavity and avoid oxidation and corrosion. The slope is used to block the RTP pipe transport medium from eroding the connection cavity. The two work together to ensure a stable fit between the connection ring and the connection cavity.

[0016] Preferably, the connecting cavity is used to inject adhesive. The adhesive refers to a chemical agent that acts as an adhesive. This description is clear enough, so the specific material of the adhesive will not be further explained. In specific implementation, technicians can choose different types of adhesives according to actual needs without having a substantial impact on the technical effect. The connecting cavity and the connecting ring are bonded by injecting adhesive into the connecting cavity.

[0017] Preferably, the connecting cavity, the first limiting groove, and the second limiting groove are filled with thermoplastic filler. The melting point of the thermoplastic filler is lower than the Curie point of the magnet, which is intended to prevent the magnet from losing its magnetism. At the same time, the melting point of the thermoplastic filler is lower than the melting point of the RTP tube, which is intended to prevent local melting of the RTP tube. The thermoplastic filler here refers to filler with thermoplastic properties. Thermoplastic plastics with good compatibility with RTP tubes are preferred. In specific implementation, technicians can select different types of thermoplastic plastics according to actual needs without having a substantial impact on the technical effect. The purpose of setting the thermoplastic filler is to connect and seal the connecting cavity.

[0018] 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:

[0019] A. Pipeline installation and connection can be achieved in both concentric and eccentric situations. Since the volume of the connection cavity is larger than the volume of the connection ring, the connection ring can move within the connection cavity to overcome the problem of uneven force distribution on the RTP pipeline under eccentric conditions, thus shortening the pipeline installation time and improving the pipeline installation efficiency.

[0020] B. It can connect pipes with different diameters and thickness differences without the need for beveling or matching reducing pipe fittings, which simplifies the pipe installation process;

[0021] C. It can effectively avoid the problem of uneven bolt preload distribution in large-diameter RTP pipes. The connection device and the limiting ring are used to achieve the connection of RTP pipe ends, which will not cause uneven bolt preload distribution. At the same time, the connection device can also be used for pipes of different diameters, with a wide range of applications. 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;

[0024] Figure 2 This is a schematic diagram of the front structure of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the connecting device;

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

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the first and second rings;

[0028] Figure 6 This is a schematic diagram of the longitudinal section structure of the present invention;

[0029] Figure 7 for Figure 6 Enlarged view of a specific area;

[0030] In the diagram: First end-100, connecting ring-101, first limiting groove-102, second limiting groove-103, first flange-104, ramp-105, second end-200, connecting cavity-201, second flange-202, limiting ring-300, slot-301, connecting device-400, magnet block-401, fixing ring-402, swing rod-403, notch-404, bend-405, first ring-500, hot bimetallic strip-501, second ring-600 Detailed Implementation

[0031] 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

[0032] Please see Figure 1-7The present invention provides a rapid installation device for a large-diameter special composite RTP pipeline, including a first end 100, a second end 200, a limiting ring 300, a connecting device 400, a first ring 500 and a second ring 600. A connecting ring 101 is formed on the first end 100, and a first limiting groove 102 and a second limiting groove 103 are formed on the inner and outer sides of the connecting ring 101, respectively. A first flange 104 is formed on the side of the first end 100.

[0033] A connecting cavity 201 is formed on the second end 200, which can cooperate with the connecting ring 101. The volume of the connecting cavity 201 is larger than the volume of the connecting ring 101. A second flange 202 is formed on the second end 200. A ramp 105 is also formed on the inner side of the first end 100. The ramp 105 cooperates with the first flange 104 to seal the connecting cavity 201.

[0034] The limiting ring 300 is made of metal and is respectively embedded in the inner side and the outer side of the connecting cavity 201.

[0035] The connecting device 400 is respectively disposed on the first limiting groove 102 and the second limiting groove 103. The connecting device 400 is provided with a magnet 401 and the magnets 401 on the first limiting groove 102 and the second limiting groove 103 have opposite magnetic properties. Under the action of magnetic force, the connecting device 400 can be fixed with the limiting ring 300.

[0036] The connecting device 400 also includes a fixing ring 402 and a swing rod 403. The fixing ring 402 is embedded in the connecting ring 101. The fixing ring 402 has notches 404 evenly distributed around its circumference. The middle part of the swing rod 403 is located in the notch 404 and is hinged to the fixing ring 402. One end of the swing rod 403 is connected to the magnet block 401, and the other end of the swing rod 403 is used to lock the limiting ring 300. The limiting ring 300 has an annular groove 301. The end of the swing rod 403 that mates with the limiting ring 300 has a bent portion 405. The bent portion 405 locks the groove 301 to fix the connecting device 400 and the limiting ring 300. Along the direction away from the bent portion 405, the thickness of the limiting ring 300 gradually increases, making the longitudinal section of the limiting ring 300 wedge-shaped.

[0037] The first ring 500 is sleeved on the first limiting groove 102, and the second ring 600 is disposed in the second limiting groove 103. The first ring 500 and the second ring 600 are adjacent to the bending part 405. The outer side of the first ring 500 and the inner side of the second ring 600 are respectively provided with a hot bimetallic strip 501. The hot bimetallic strip 501 can abut against the connecting cavity 201. The hot bimetallic strip 501 is distributed in a rotationally symmetrical manner with the center of rotation of the first ring 500 and the second ring 600 as the center of rotation.

[0038] In one specific embodiment, the connecting cavity 201 is used for injecting adhesive (Example 1). In another specific embodiment, the connecting cavity 201, the first limiting groove 102, and the second limiting groove 103 are filled with thermoplastic filler (Example 2). The melting point temperature of the thermoplastic filler is lower than the Curie point temperature of the magnet block 401. The thermoplastic filler is melted and flowed by heating, and then solidified after cooling to achieve sealing and connection.

[0039] Working principle: For Embodiments 1 and 2, the high-frequency coil induction heats the first ring 500 and the second ring 600 externally at the first end 100. At this time, the bimetallic strip 501 on the first ring 500 and the second ring 600 heats up, bends, and adheres tightly to the first ring 500 and the second ring 600. The bimetallic strip 501 does not affect the insertion of the connecting ring 101 into the connecting cavity 201. Subsequently, the connecting ring 101 is inserted into the connecting cavity 201. The technician uses an electromagnet or magnet externally to attract the magnet block 401. Under the action of the magnet block 401, the bending part 405 will lock into the slot 301 on the limiting ring 300, thereby realizing the connection between the first end 100 and the second end 200.

[0040] Since the magnet 401 can drive the swing rod 403 to move under the action of magnetic force, and the connecting ring 101 can move in the connecting cavity 201, the swing rod 403 can be locked in the slots 301 at different positions on the limiting ring 300 under the action of magnetic force, thus adapting to the second end 200 with different pipe diameters. Even if the axis of the first end 100 and the axis of the second end 200 are offset, the first end 100 and the second end 200 can still be connected. Therefore, this connection structure is applicable to RTP pipes with different pipe diameters and thicknesses. Pipe connection can be achieved in both cases of axis alignment and misalignment, without the need to spend time on pipe alignment, which helps to shorten the installation time and improve the efficiency of pipe installation.

[0041] In Example 1, the connecting cavity 201 is used to inject adhesive. The connecting ring 101 is fitted with the connecting cavity 201. After the connecting device 400 and the limiting ring 300 are fixed, the connection of the first end 100 and the second end 200 is completed after the adhesive cures. In Example 2, the connecting cavity 201, the first limiting groove 102 and the second limiting groove 103 are used to fill thermoplastic filler. The thermoplastic filler is made to flow by heating the first ring 500, the second ring 600, the limiting ring 300 and the connecting device 400 by a high-frequency coil. Then the connecting ring 101 is fitted with the connecting cavity 201. After the thermoplastic filler cools down and solidifies, the connection of the first end 100 and the second end 200 is completed.

[0042] For Embodiments 1 and 2, after the first end 100 and the second end 200 are connected, wait for the first ring 500 and the second ring 600 to cool down. During this process, the hot bimetallic strip 501 on the first ring 500 and the second ring 600 will return to a straight shape, which can abut against the surface of the connecting cavity 201 to prevent the connecting ring 101 from rotating in the connecting cavity 201. The connecting device 400 and the limiting ring 300 cooperate to prevent the first end 100 and the second end 200 from moving in the axial direction and separating. At the same time, the first ring 500, the second ring 600 and the connecting device 400, as a skeleton, are filled with adhesive and thermoplastic filler to improve the structural strength of the connection between the first end 100 and the second end 200.

[0043] In Example 2, when it is necessary to separate the first end 100 and the second end 200, the first ring 500 and the second ring 600 are heated using a high-frequency coil. At this time, the hot bimetallic strip 501 bends and deforms, sticking tightly to the first ring 500 and the second ring 600, which will not affect the separation of the first end 100 and the second end 200. During the process, the thermoplastic filler is heated to a molten and flowing state due to heat transfer and no longer plays a bonding role. Subsequently, the technician uses an electromagnet and a magnet with opposite magnetic properties to the installation steps to repel the magnet block 401, so that the bent part 405 separates from the slot 301 on the limiting ring 300, thereby achieving the rapid separation of the first end 100 and the second end 200 without damaging the port structure of the RTP tube.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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 large diameter special composite RTP pipe fast installation device, characterized in that, The utility model relates to a kind of connecting device, including: First end (100), first end (100) is formed with connecting ring (101) on, first limit slot (102) and second limit slot (103) are formed with respectively on the inside and outside of connecting ring (101); Second end (200), second end (200) is formed with the connecting cavity (201) that can cooperate with connecting ring (101), and the volume of connecting cavity (201) is greater than the volume of connecting ring (101); Limit ring (300), limit ring (300) is metal material, limit ring (300) is respectively embedded in the inside of connecting cavity (201) and the outside of connecting cavity (201); Connecting device (400), connecting device (400) is respectively arranged on first limit slot (102) and second limit slot (103), and magnet block (401) is arranged on connecting device (400) and the magnet block (401) on first limit slot (102), second limit slot (103) is opposite in magnetism, under the action of magnetic force, connecting device (400) can be fixed with limit ring (300); First circular ring (500) and second circular ring (600), first circular ring (500) is set on first limit slot (102), and second circular ring (600) is arranged in second limit slot (103), and heat bimetallic strip (501) is respectively arranged on the outside of first circular ring (500) and the inside of second circular ring (600), heat bimetallic strip (501) can resist connecting cavity (201), and heat bimetallic strip (501) is rotationally symmetric distribution with the center of first circular ring (500), second circular ring (600) as rotation center.

2. A large diameter special composite RTP pipe fast installation device according to claim 1, characterized in that: The connecting device (400) includes a fixed ring (402) and a swing rod (403); The fixed ring (402) is embedded on the connecting ring (101), and the fixed ring (402) is circumferentially equidistantly distributed with notches (404); The middle part of the swing rod (403) is located in the notch (404) and is hinged to the fixed ring (402), one end of the swing rod (403) is connected to the magnet block (401), and the other end of the swing rod (403) is used for clamping the limit ring (300).

3. A large diameter special composite RTP pipe fast installation device according to claim 2, characterized in that: The limit ring (300) is formed with a ring-shaped clamping groove (301), the swing rod (403) is formed with a bending portion (405) at the cooperation end with the limit ring (300), the bending portion (405) clamps the clamping groove (301) to fix the connecting device (400) and the limit ring (300).

4. A large diameter special composite RTP pipe fast installation device according to claim 3, characterized in that: The first circular ring (500) and the second circular ring (600) are adjacent to the bending portion (405).

5. A large diameter special composite RTP pipe fast installation device according to claim 3, characterized in that: In the direction away from the bending portion (405), the thickness of the limit ring (300) gradually increases, so that the longitudinal section of the limit ring (300) is wedge-shaped.

6. A large diameter special composite RTP pipe fast installation device according to any one of claims 1-5, characterized in that: The first end (100) is formed with a first flange (104) on the side surface, and the second end (200) is formed with a second flange (202).

7. A large diameter special composite RTP pipe fast installation device according to claim 6, characterized in that: The inside of the first end (100) is further formed with a slope (105), and the slope (105) cooperates with the first flange (104) to block the connecting cavity (201).

8. A large diameter special composite RTP pipe fast installation device according to any one of claims 1-5, characterized in that: The connecting cavity (201) is used for injecting adhesive.

9. A large diameter special composite RTP pipe fast installation device according to any one of claims 1-5, characterized in that: The connecting cavity (201), the first limiting groove (102) and the second limiting groove (103) are used for filling thermoplastic fillers, and the melting point temperature of the thermoplastic fillers is less than the Curie point temperature of the magnet block (401).

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