Fluorine-lined pipeline

Abstract

The utility model discloses a fluorine-lined pipeline, which comprises a pipe main body, the first inner supporting piece is arranged at one end of the pipe main body and is supported on the inner wall of the pipe main body; the second inner supporting piece is arranged at the other end of the pipe main body and is supported on the inner wall of the pipe main body; the third inner supporting pieces are arranged between the first inner supporting piece and the second inner supporting piece at intervals and supported on the inner wall of the pipe body. The lining part is made of fluoroplastic or fluororubber, is lined in the pipe main body and wraps and accommodates the first inner supporting part, the second inner supporting part and the third inner supporting part, and after the lining part is connected with the first inner supporting part, the second inner supporting part, the third inner supporting part and the pipe main body, a penetrating channel is formed in the middle of the lining part; therefore, the technical problem that the fluoroplastic and the carbon steel pipe are separated and are not tightly connected is solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, specifically a fluoropolymer-lined pipeline. Background Technology

[0002] Pipelines are generally used for long-distance transportation of gases or liquids, from one point to another. They are mainly used in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, chemical industry and other fields.

[0003] In the chemical industry, because the liquids being transported are corrosive, fluoropolymer-lined pipes are often used. Fluoropolymer-lined pipes use carbon steel pipes as the base material and fluoroplastics or fluororubber as the lining. Through a molding process (the molding process involves pouring PTFE powder into a mold, pressing and sintering it to form a steel pipe inside the mold), the fluoroplastics or fluororubber, as a lining inside the carbon steel pipe, can effectively resist the erosion of various corrosive media, including acids, alkalis, and salts.

[0004] Existing fluoropolymer-lined pipes have some shortcomings. Due to the length of the pipes, some longer pipes, such as those longer than one meter, will separate from the carbon steel pipe after a period of use. The connection between the two is not tight, causing local leakage and affecting the service life of the fluoropolymer-lined pipes. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the related technologies, the purpose is to provide a fluoropolymer-lined pipe to solve the technical problem that the fluoropolymer and carbon steel pipe are separate and the connection between the two is not tight.

[0006] The technical solution to achieve the objective is: a fluoropolymer-lined pipe, comprising:

[0007] Main body;

[0008] The first inner support member is disposed at one end of the tube body and supports the inner wall of the tube body;

[0009] The second inner support is provided on the other end of the tube body and supports the inner wall of the tube body;

[0010] Several third inner support members are spaced apart between the first inner support member and the second inner support member, and are supported on the inner wall of the tube body;

[0011] The inner liner, made of fluoroplastic or fluororubber, is lined inside the tube body and encloses and accommodates the first inner support, the second inner support, and the third inner support. After being connected to the first inner support, the second inner support, the third inner support, and the tube body, the inner liner has a through channel in the middle.

[0012] Furthermore: the pipe body includes: a circular pipe segment, on the inner wall of which the first inner support member, the second inner support member, and the third inner support member are provided;

[0013] And two flanges, symmetrically connected to the circular pipe section, one flange being connected to one end of the circular pipe section and the other flange being connected to the other end of the circular pipe section.

[0014] Furthermore: the first inner support member, the second inner support member, and the third inner support member have the same structure, all including:

[0015] A circular body with a notch that breaks the circular body, and a plurality of grooves provided on the circular body for accommodating a portion of the inner liner;

[0016] And a spring, connected to the circular body and positioned at the notch.

[0017] Furthermore, the groove is a "[" shaped structure.

[0018] Furthermore, the spring is a cylindrical spring.

[0019] Furthermore: the first inner support member or the second inner support member is welded to the tube body at the circular part.

[0020] Furthermore, it also includes at least one annular groove disposed on the flange for receiving a portion of the inner liner.

[0021] Furthermore, it also includes several threaded holes, evenly distributed within the annular groove, for accommodating a portion of the inner liner.

[0022] Furthermore, after the inner liner is connected to the pipe body, the first inner support, the second inner support, the third inner support, the annular groove, and the threaded hole, the length of the inner liner is greater than the length of the pipe body.

[0023] Furthermore, the through channel has a cylindrical structure.

[0024] The above technical solution has the following beneficial effects: A fluoropolymer-lined pipe, compared with related technologies, is provided with a pipe body, a first inner support member, a second inner support member, a third inner support member, and an inner lining member;

[0025] The first, second, and third inner support members are supported on the inner wall of the tube body. The inner liner is made of fluoroplastic or fluororubber. Using a molding process, the inner liner is connected to the first, second, and third inner support members and the tube body as a whole. Due to the support of the first, second, and third inner support members, the inner liner is more tightly connected, reducing the chance of separation and extending its service life.

[0026] This overcomes the technical problem of fluoroplastics and carbon steel pipes becoming separate and poorly connected, achieving the technical effect of reducing the probability of separation and making the connection between the two more tight, thus proving its practicality. Attached Figure Description

[0027] Figure 1 This is a sectional view of the final assembly.

[0028] Figure 2 This is a schematic diagram of the overall assembly structure;

[0029] Figure 3 for Figure 2 A partial sectional view;

[0030] Figure 4 for Figure 2 Exploded view;

[0031] Figure 5 A structural schematic diagram of the first inner support member, the second inner support member, or the third inner support member;

[0032] Figure 6 This is a schematic diagram of the structure of a circular body;

[0033] Figure 7 for Figure 4 A magnified view of part A in the diagram;

[0034] In the figure: 10. Pipe body, 10-1. Circular pipe section, 10-2. Flange, 20. First inner support, 20-1. Circular body, 20-11. Notch, 20-12. Groove, 20-2. Spring, 30. Second inner support, 40. Third inner support, 50. Liner, 51. Through channel, 60. Annular groove, 70. Threaded hole. Detailed Implementation

[0035] To make the content easier to understand, the following detailed description is provided with reference to specific embodiments and accompanying drawings;

[0036] A fluoropolymer-lined pipe solves the technical problem of separation between the fluoroplastic and carbon steel pipes and poor bonding in related technologies. This new type of pipe can be manufactured and used, achieving the positive effects of reducing the likelihood of separation between the fluoroplastic and carbon steel pipes and ensuring a tighter bond. The overall concept is as follows:

[0037] Implementation

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown; a fluoropolymer-lined pipe, comprising:

[0039] Pipe body 10;

[0040] The first inner support member 20 is disposed on one end of the tube body 10 and supports the inner wall of the tube body 10;

[0041] The second inner support member 30 is disposed on the other end of the tube body 10 and supports the inner wall of the tube body 10.

[0042] Several third inner support members 40 are spaced apart between the first inner support member 20 and the second inner support member 30, and are supported on the inner wall of the tube body 10;

[0043] The inner liner 50, made of fluoroplastic or fluororubber, is lined inside the tube body 10 and encloses and accommodates the first inner support 20, the second inner support 30, and the third inner support 40. After being connected to the first inner support 20, the second inner support 30, the third inner support 40, and the tube body 10, the inner liner 50 has a through channel 51 in the middle position.

[0044] Specifically, during implementation, the first inner support member 20, the second inner support member 30, and the third inner support member 40 are supported on the inner wall of the pipe body 10. The inner liner 50 is made of fluoroplastic or fluororubber. Using a molding process, the inner liner 50 is connected to the first inner support member 20, the second inner support member 30, the third inner support member 40, and the pipe body 10 as a whole. Due to the support of the first inner support member 20, the second inner support member 30, and the third inner support member 40, the inner liner 50 is connected more tightly, reducing the probability of the inner liner 50 separating from the pipe body 10 and extending its service life.

[0045] The “molding process” here is a commonly used process in the existing technology. The assembly of the tube body 10, the first inner support 20, the second inner support 30 and the third inner support 40 is placed in a mold. PTFE plastic powder is added to the mold, and the assembly is pressed and sintered at high temperature. After the inner liner 50 melts, the inner liner 50 is connected to the first inner support 20, the second inner support 30, the third inner support 40 and the tube body 10. After cooling, it forms a whole.

[0046] The "mold" is not the inventive point of this utility model, but is only used to better describe this utility model and facilitate understanding of the technical solution of this utility model. Those skilled in the art can directly and without doubt know how to set it after seeing the disclosed content, without needing to put in creative effort or conduct excessive experiments.

[0047] Another implementation method:

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown; in implementation, the pipe body 10 includes: a circular pipe section 10-1, on the inner wall of the circular pipe section 10-1, a first inner support member 20, a second inner support member 30 and a third inner support member 40 are provided; and two flanges 10-2, symmetrically connected to the circular pipe section 10-1, one flange 10-2 being connected to one end of the circular pipe section 10-1 and the other flange 10-2 being connected to the other end of the circular pipe section 10-1;

[0049] The outer diameter of flange 10-2 is larger than the outer diameter of circular pipe section 10-1;

[0050] Welding is performed between the circular pipe section 10-1 and the flange 10-2;

[0051] Another implementation method:

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown; in implementation, the first inner support member 20, the second inner support member 30, and the third inner support member 40 have the same structure, each including: a circular body 20-1, the circular body 20-1 having a notch 20-11 that disconnects the circular body 20-1, the circular body 20-1 also having several grooves 20-12 that accommodate a portion of the inner liner 50; and a spring 20-2 connected to the circular body 20-1 and disposed at the notch 20-11;

[0053] The circular body 20-1 is formed by bending a section of round steel and has a notch 20-11, which creates elasticity.

[0054] The spring 20-2 is a cylindrical spring, welded to the circular body 20-1. When the circular body 20-1 is inserted into the tube body 10, the spring 20-2 is compressed, which facilitates the insertion of the circular body 20-1. After insertion, the spring 20-2 rebounds, and the circular body 20-1 is tightly attached to the inner wall of the tube body 10, forming a support structure on the inner wall of the tube body 10. After being connected to the inner liner 50, the circular body 20-1 and the spring 20-2 have a pulling effect, preventing the inner liner 50 from separating from the tube body 10 and causing voids.

[0055] The grooves 20-12 are "[" shaped structures, and there are five grooves 20-12, which facilitates connection with the inner lining 50 and forms a tension;

[0056] The first inner support member 20 or the second inner support member 30 is welded to the tube body 10 at the circular body 20-1, which increases the reliability of the connection.

[0057] Another implementation method:

[0058] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown; in practice, it also includes: at least one annular groove 60, disposed on the flange 10-2, for accommodating a portion of the inner liner 50;

[0059] An annular groove 60 is provided. After the PTFE powder melts, it enters the annular groove 60, which increases the contact area between the tube body 10 and the inner liner 50, preventing the inner liner 50 from separating from the tube body 10, and making the connection more reliable.

[0060] Another implementation method:

[0061] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown; in practice, it also includes: a plurality of threaded holes 70, evenly distributed within the annular groove 60, for accommodating a portion of the inner liner 50;

[0062] There are six threaded holes 70. After the PTFE powder melts, it enters the threaded holes 70, which increases the contact area between the tube body 10 and the inner liner 50, forming a pull and preventing the inner liner 50 from separating from the tube body 10, thus making the connection more reliable.

[0063] Another implementation method:

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown; in practice, after the inner liner 50 is connected to the pipe body 10, the first inner support 20, the second inner support 30, the third inner support 40, the annular groove 60 and the threaded hole 70, the length of the inner liner 50 is greater than the length of the pipe body 10.

[0065] The length of the inner liner 50 is greater than the length of the pipe body 10, so that when one fluoropolymer-lined pipe is connected to another fluoropolymer-lined pipe through the bolts inserted at the flange 10-2, the inner liners 50 can fit together, reducing the probability of the inner liner 50 separating from the pipe body 10 and extending the service life.

[0066] The through channel 51 has a cylindrical structure, which facilitates the flow of the medium inside the fluoropolymer-lined pipe;

[0067] In the description, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience or simplification of the description, rather than indicating a specific orientation that must be present; the operation process described in the embodiments is not an absolute usage step, and corresponding adjustments can be made in actual use;

[0068] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the words “first,” “second,” and similar terms used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components, and similarly, the words “a” or “a” and similar terms do not determine a quantity limitation, but rather indicate the presence of at least one, as determined by the content of the embodiments;

[0069] The above description is only a preferred embodiment, but the scope of protection is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the disclosed technology, based on the technical solution and inventive concept, should be included within the scope of protection.

Claims

1. A fluorine-lined pipe, characterized by, The utility model relates to a kind of pipe body (10);First inner support (20) is arranged on one end of the pipe body (10), is supported on the inner wall of the pipe body (10);Second inner support (30) is arranged on the other end of the pipe body (10), is supported on the inner wall of the pipe body (10);Several third inner supports (40) are arranged at intervals between the first inner support (20) and the second inner support (30), are supported on the inner wall of the pipe body (10);And inner lining (50) is fluorine plastic or fluorine rubber, lining in the pipe body (10), and the first inner support (20), the second inner support (30) and the third inner support (40) are wrapped, are contained, the middle position of the inner lining (50) has through channel (51) after being connected with the first inner support (20), the second inner support (30), the third inner support (40) and the pipe body (10). The pipe body (10) includes: a circular pipe segment (10-1), the first inner support (20), the second inner support (30) and the third inner support (40) are arranged on the inner wall of the circular pipe segment (10-1);And two flanges (10-2) are symmetrically connected to the circular pipe segment (10-1), one of the flanges (10-2) is connected to one end of the circular pipe segment (10-1), and the other flange (10-2) is connected to the other end of the circular pipe segment (10-1). The first inner support (20), the second inner support (30) and the third inner support (40) are the same structure, and all include: a circular body (20-1), the circular body (20-1) has a notch (20-11), the notch (20-11) breaks the circular body (20-1), a plurality of grooves (20-12) are further arranged on the circular body (20-1), and a part of the inner lining (50) is contained at the groove (20-12);And a spring (20-2) is connected to the circular body (20-1) and arranged at the notch (20-11). The groove (20-12) is a "[ "shape structure. The spring (20-2) is a cylindrical spring. The first inner support (20) or the second inner support (30) is welded to the pipe body (10) at the circular body (20-1).

2. A lined pipe according to claim 1, characterised in that: Further comprising: at least one annular groove (60) is arranged on the flange (10-2), for containing a part of the inner lining (50). Further comprising: a plurality of threaded holes (70) are uniformly distributed in the annular groove (60), for containing a part of the inner lining (50).

3. A lined pipe according to claim 2, wherein: After the inner lining (50) is connected with the pipe body (10), the first inner support (20), the second inner support (30), the third inner support (40), the annular groove (60) and the threaded hole (70), the length dimension of the inner lining (50) is greater than the length dimension of the pipe body (10). ​ ​ 4. A lined pipe according to claim 3, wherein: ​ 5. A lined pipe according to claim 3, wherein: ​ 6. A lined pipe according to claim 5, wherein: ​ 7. The lined pipe of claim 2, wherein: ​ ​ 8. A lined pipe according to claim 7, characterised in that: ​ ​ 9. A lined pipe according to claim 8, characterised in that: ​ 10. A lined pipe according to claim 9, wherein: The through passage (51) is a cylindrical structure. The through passage (51) is a cylindrical structure.

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