Rapid installation device for large-diameter special composite RTP pipeline

Abstract

The invention relates to the field of RTP pipelines, in particular to a large-diameter special composite RTP pipeline rapid installation device which comprises a first end, a second end, a limiting ring, a connecting device, a first circular ring and a second circular ring. A connecting ring is formed at the first end, and a first limiting groove and a second limiting groove are formed in the inner side and the outer side of the connecting ring correspondingly; a connecting cavity capable of being matched with the connecting ring is formed in the second end, the limiting rings are embedded in the inner side and the outer side of the connecting cavity respectively, the connecting devices are arranged on the first limiting groove and the second limiting groove respectively, magnets are arranged on the connecting devices, and the magnets on the first limiting groove and the magnets on the second limiting groove are opposite in magnetism. The first limiting groove is sleeved with the first circular ring, the second circular ring is arranged in the second limiting groove, the thermal bimetallic strips are arranged on the outer side of the first circular ring and the inner side of the second circular ring correspondingly, pipelines with pipe diameter differences can be rapidly connected under the eccentric condition, and the pipeline installation efficiency can be improved while the problem of uneven stress is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of RTP pipes, in particular to a large-diameter special composite RTP pipe fast mounting device. BACKGROUND

[0002] Reinforced thermoplastic pipes (RTP) are large-diameter composite pipes with high-strength fibers or metals as reinforcing layers, usually adopting a three-layer structure, the inner and outer layers being thermoplastic plastics, and the middle layer containing aramid fiber, glass fiber or steel wire and other reinforcing materials. The RTP is a special pipe specially designed to solve the problem of conveying in extreme industrial environments (such as severe wear, strong corrosion, high temperature, etc.), and is widely used for conveying various high-temperature, high-pressure, flammable and corrosive chemical fluids.

[0003] The common connection method for the end of the RTP pipe is to use a mechanical connection (such as a flange, a clamp, etc.). The mechanical connection is susceptible to the influence of the axial alignment of the pipe and the uneven distribution of the bolt pre-tightening force on the connecting piece, resulting in uneven distribution of the sealing pressure gradient of the end of the RTP pipe, and local leakage may occur in a high-pressure environment. In addition, if the pipe diameter has a thickness difference when connected, stress concentration may also occur at the connection. The above reasons are important reasons affecting the connection accuracy of the pipe and reducing the installation efficiency. The purpose of the application is to provide a new RTP pipe connection structure to solve the above problems and improve the installation efficiency of the pipe. SUMMARY

[0004] The purpose of the application is to provide a large-diameter special composite RTP pipe fast mounting device to solve the problems mentioned in the background.

[0005] To achieve the above purpose, the application provides the following technical scheme: a first end, a second end, a limiting ring, a connecting device, a first circular ring and a second circular ring are provided, a connecting ring is formed on the first end, first and second limiting grooves are formed on the inner and outer sides of the connecting ring, the first and second ends refer to the ends of different pipes, and the first and second are only used to indicate the difference and do not have actual meaning; A connecting cavity matched with the connecting ring is formed on the second end, the volume of the connecting cavity is greater than that of the connecting ring, and the connecting cavity is used for inserting the connecting ring; The limiting ring is made of metal and is embedded in the inner side and the outer side of the connecting cavity, the limiting ring refers to a ring-shaped component for limiting, and the type of metal material used by the limiting ring is not an essential technical feature and is not the technical content to be protected by the applicant, and the technical personnel can select different types of metal materials according to the actual demand, and the purpose of using the metal material is to heat the limiting ring through a high-frequency coil; The connecting device is arranged on the first limiting groove and the second limiting groove respectively, a magnet block is arranged on the connecting device, the magnet blocks on the first limiting groove and the second limiting groove are opposite in magnetism, the connecting device can be fixed with the limiting ring under the action of magnetic force, the connecting device is used to combine the connecting ring and the connecting cavity, and the connecting device is made of metal material; The first circular ring is arranged on the first limiting groove, the second circular ring is arranged in the second limiting groove, the first circular ring and the second circular ring are made of metal material, and the outer side of the first circular ring and the inner side of the second circular ring are respectively provided with a thermal bimetallic strip; the thermal bimetallic strip can abut against the connecting cavity; the thermal bimetallic strip is rotationally symmetrical about the centers of the first circular ring and the second circular ring; the first circular ring and the second circular ring are made of metal material; the thermal bimetallic strip refers to a sheet-shaped component made of thermal bimetal; the thermal bimetal is a material made of two metals with different thermal expansion coefficients in the prior art; the thermal bimetal will be bent after being heated due to the different thermal expansion coefficients; the bending degree of the thermal bimetallic strip can be changed by changing the thickness and material of the metal constituting the thermal bimetal.

[0006] To optimize the above technical solution, the following measures are further taken: the connecting device comprises a fixed ring and a swing rod; the fixed ring is embedded on the connecting ring and is provided with equidistantly distributed notches in the circumferential direction; the swing rod is hingedly connected to the fixed ring with the middle part of the swing rod located in the notches; one end of the swing rod is connected to the magnet block; the other end of the swing rod is used to clamp the limiting ring; the magnet block refers to a block-shaped component composed of a magnet; the magnet material and size can be changed to change the magnetic force between the magnet block and the external magnet block.

[0007] As a further improvement of the above technical solution, the limiting ring is formed with a ring-shaped clamping groove, the swing rod and the limiting ring cooperation end are formed with a bending part, the bending part clamps the clamping groove to fix the connecting device and the limiting ring; in specific implementation, the surface of the limiting ring is ground to improve the surface friction and prevent slipping.

[0008] As a further improvement of the technical solution, the first circular ring and the second circular ring are adjacent to the bending part; when the temperature of the first circular ring and the second circular ring decreases, the thermal bimetallic strip changes from the bent state to the flat state and can abut against the bending part and the limiting ring, thereby avoiding the separation of the bending part and the limiting ring and ensuring the fixing strength of the connecting device and the limiting ring.

[0009] As an improvement of the foregoing technical solution, the thickness of the limiting ring gradually increases in the direction away from the bending part, so that the longitudinal section of the limiting ring is wedge-shaped.

[0010] Further, the first end side is formed with a first flange, and the second end is formed with a second flange; for the RTP pipe coaxially aligned with the shaft center, the bolt assembly passes through the first flange and the second flange to improve the connection strength of the first end and the second end and improve the safety protection.

[0011] Preferably, the inner side of the first end further forms a slope, which cooperates with the first flange to block the connecting cavity, the first flange can prevent the connecting cavity from being eroded by the external environment, avoiding oxidation and corrosion, and the slope is used to prevent the connecting cavity from being eroded by the medium transported by the RTP pipe, and the two cooperate with each other to ensure the stable cooperation of the connecting ring and the connecting cavity.

[0012] Preferably, the connecting cavity is used to inject adhesive, which is a medicament that plays a gluing role. The description is clear enough, so no further explanation of the specific material of the adhesive is given. The skilled person can select different types of adhesives according to actual needs in specific implementation, which will not have a substantial impact on the technical effect. The connecting cavity is filled with adhesive to connect the connecting cavity and the connecting ring.

[0013] Preferably, the connecting cavity, the first limiting groove and the second limiting groove are used to fill thermoplastic filler, the melting point temperature of the thermoplastic filler is less than the Curie point temperature of the magnet block, which is intended to avoid the loss of magnetism of the magnet block, and the melting point temperature of the thermoplastic filler is less than the melting point temperature of the RTP pipe, which is intended to avoid local melting of the RTP pipe. The thermoplastic filler here refers to a filler with thermoplasticity, and a thermoplastic plastic with good compatibility with the RTP pipe is preferably used. The skilled person can select different types of thermoplastic plastics according to actual needs in specific implementation, which will not have a substantial impact on the technical effect. The purpose of the thermoplastic filler is to connect and seal the connecting cavity.

[0014] From the above description of the structure of the present application, compared with the prior art, the present application has the following advantages: A. The pipeline installation connection can be realized in the case of concentricity or eccentricity of the shaft center. Since the volume of the connecting cavity is greater than the volume of the connecting ring, the connecting ring can move in the connecting cavity to overcome the problem of uneven stress distribution of the RTP pipeline in the case of eccentricity of the shaft center, thereby shortening the pipeline installation time and improving the pipeline installation efficiency. B. The pipelines with different thicknesses can be connected without the need for beveling or matching of reducers, which can simplify the pipeline installation steps. C. The uneven distribution of bolt pre-tightening force of large-diameter RTP pipes can be effectively avoided. The connecting device cooperates with the limiting ring to realize the end connection of the RTP pipeline, and the problem of uneven distribution of bolt pre-tightening force does not occur. At the same time, the connecting device can also be applied to pipelines with different diameters, and has a wide range of applications. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic view of the front structure of the present application; Figure 3 is a schematic view of the three-dimensional structure of the connecting device; Figure 4 is a schematic view of the longitudinal section structure of the present application; Figure 3 is a partial enlarged view; Figure 5 is a schematic view of the three-dimensional structure of the first and second rings; Figure 6 is a schematic view of the longitudinal section structure of the present application; Figure 7 is a partial enlarged view; Figure 6 is a partial enlarged view; In the figure: first end - 100, connecting ring - 101, first limiting groove - 102, second limiting groove - 103, first flange - 104, slope - 105, second end - 200, connecting cavity - 201, second flange - 202, limiting ring - 300, clamping groove - 301, connecting device - 400, magnet block - 401, fixing ring - 402, swing rod - 403, notch - 404, bending part - 405, first ring - 500, thermal bimetallic strip - 501, second ring - 600 DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0017] Please refer to Figures 1-7 The present application provides a large-diameter special composite RTP pipeline rapid installation device, which comprises 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. The first end 100 is formed with a connecting ring 101. The inner and outer sides of the connecting ring 101 are respectively formed with a first limiting groove 102 and a second limiting groove 103. The side surface of the first end 100 is formed with a first flange 104. The second end 200 is formed with a connecting cavity 201 which can cooperate with the connecting ring 101. The volume of the connecting cavity 201 is greater than the volume of the connecting ring 101. The second end 200 is formed with a second flange 202. The inner side of the first end 100 is further formed with a slope 105. The slope 105 cooperates with the first flange 104 to block the connecting cavity 201. The limiting ring 300 is made of metal. The limiting ring 300 is respectively embedded in the inner side of the connecting cavity 201 and the outer side of the connecting cavity 201. The connecting device 400 is arranged on the first limiting groove 102 and the second limiting groove 103 respectively, and the connecting device 400 is provided with a magnet block 401, and the magnet blocks 401 on the first limiting groove 102 and the second limiting groove 103 are magnetically opposite, and the connecting device 400 can be fixed with the limiting ring 300 under the action of magnetic force; The connecting device 400 further comprises a fixed ring 402 and a swing rod 403, the fixed ring 402 is embedded on the connecting ring 101, the fixed ring 402 is circumferentially and equidistantly provided with notches 404, the swing rod 403 is hinged with the fixed ring 402 at the middle part located in the notches 404, one end of the swing rod 403 is connected with the magnet block 401, and the other end of the swing rod 403 is used for clamping the limiting ring 300, the limiting ring 300 is formed with a ring-shaped clamping groove 301, the swing rod 403 is formed with a bending part 405 at the cooperation end with the limiting ring 300, the bending part 405 clamps the clamping groove 301 to realize the fixation of the connecting device 400 and the limiting ring 300, and the thickness of the limiting ring 300 gradually increases in the direction away from the bending part 405, so that the longitudinal section of the limiting ring 300 is wedge-shaped.

[0018] The first circular ring 500 is sleeved on the first limiting groove 102, and the second circular ring 600 is arranged in the second limiting groove 103, the first circular ring 500 and the second circular ring 600 are adjacent to the bending part 405, the outer side of the first circular ring 500 and the inner side of the second circular ring 600 are respectively provided with a thermal bimetallic strip 501, the thermal bimetallic strip 501 can abut against the connecting cavity 201, and the thermal bimetallic strip 501 is rotationally symmetrically distributed with the center of the first circular ring 500 and the second circular ring 600 as the rotation center.

[0019] In one specific embodiment, the connecting cavity 201 is used for injecting an adhesive (example 1), and in another specific embodiment, the connecting cavity 201, the first limiting groove 102 and the second limiting groove 103 are filled with a thermoplastic filler (example 2), the melting point temperature of the thermoplastic filler is less than the Curie point temperature of the magnet block 401, and 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 flows by heating, and is solidified after cooling to realize sealing and connection.

[0020] Working principle: for example 1 and example 2, the high-frequency coil inductively heats the first circular ring 500 and the second circular ring 600 outside the first end 100, at this time, the thermal bimetallic strip 501 on the first circular ring 500 and the second circular ring 600 is bent and tightly attached to the first circular ring 500 and the second circular ring 600 after being heated, and the thermal bimetallic strip 501 will 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, and the technician uses an electromagnet or a magnet outside to attract the magnet block 401, and the bending part 405 will be clamped in the clamping groove 301 on the limiting ring 300 under the driving of the magnet block 401, thereby realizing the combination of the first end 100 and the second end 200.

[0021] Since the magnet block 401 can drive the swing rod 403 to move under the magnetic force, and the connecting ring 101 can move in the connecting cavity 201, the swing rod 403 can be clamped in the clamping groove 301 at different positions on the limiting ring 300 under the magnetic force, thereby 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 combination of the first end 100 and the second end 200 can still be realized, so that the connecting structure can be applied to the RTP pipeline with different pipe diameters, and the pipeline connection can be realized in the case of axis alignment / unalignment, without wasting time for pipeline alignment, which helps to shorten the installation time and improve the pipeline installation efficiency.

[0022] For example 1, the connecting cavity 201 is used to inject adhesive, the connecting ring 101 cooperates with the connecting cavity 201, and the connecting device 400 is fixed with the limiting ring 300, and then the connection of the first end 100 and the second end 200 is completed after waiting for the adhesive to solidify; for example 2, the connecting cavity 201, the first limiting groove 102 and the second limiting groove 103 are used to fill the thermoplastic filler, the components such as the first circular ring 500, the second circular ring 600, the limiting ring 300 and the connecting device 400 are heated by the high-frequency coil to make the thermoplastic filler flow, then the connecting ring 101 cooperates with the connecting cavity 201, and the connection of the first end 100 and the second end 200 is completed after waiting for the thermoplastic filler to cool and solidify.

[0023] For example 1 and example 2, after the connection of the first end 100 and the second end 200 is completed, wait for the first circular ring 500 and the second circular ring 600 to cool down, during which the thermal bimetallic strip 501 on the first circular ring 500 and the second circular ring 600 will restore to a flat shape and can resist the surface of the connecting cavity 201 to avoid rotation of the connecting ring 101 in the connecting cavity 201, and the connecting device 400 and the limiting ring 300 can avoid the movement of the first end 100 and the second end 200 in the axial direction to separate, and the first circular ring 500, the second circular ring 600 and the connecting device 400 filled with adhesive and thermoplastic filler as a framework can improve the structural strength of the connection of the first end 100 and the second end 200.

[0024] For example 2, when it is necessary to separate the first end 100 and the second end 200, the first circular ring 500 and the second circular ring 600 are heated using a high-frequency coil, at this time the thermal bimetallic strip 501 is bent and deformed to tightly adhere to the first circular ring 500 and the second circular ring 600, which will not affect the separation of the first end 100 and the second end 200, during which the thermoplastic filler is heated to a molten flow state due to heat transfer and no longer plays a bonding role, then the technician uses an electromagnet and a magnet with opposite magnetic properties to repel the magnet block 401, so that the bent part 405 is separated from the clamping groove 301 on the limiting ring 300, thereby realizing the rapid separation of the first end 100 and the second end 200, without damaging the port structure of the RTP pipe.

[0025] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0028] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

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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