Sealing structure of crimping type carbon-coated steel pipe

Abstract

The utility model relates to the technical field of pipe fitting joints, and discloses a sealing structure of a compression joint type carbon-coated steel pipe. The sealing structure comprises a pipeline connecting assembly, a clamping and pressing fixing assembly is installed at the lower end of the pipeline connecting assembly, a pipe fitting is installed at the upper end of the clamping and pressing fixing assembly, a first inserting opening is formed in the upper end of the pipe fitting, and a rubber ring is installed on the inner side of the first inserting opening; a second inserting opening is formed in the lower end of the pipe fitting, an upper protective adhesive tape is installed at the upper end of the first inserting opening, a device assembly is installed at the lower end of the clamping and pressing fixing assembly, a second pipe is installed at the upper end of the device assembly, and a second connecting opening is formed in the lower end of the second pipe; the technical problems that traditional galvanized steel pipes are mainly connected through screw threads, the technical requirements for constructors are high, the construction period is long, efficiency is low, and leakage points are prone to being caused are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, specifically a sealing structure for a press-fit coated carbon steel pipe. Background Technology

[0002] In China, galvanized steel pipes and welded seamless steel pipes are the most commonly used materials for low-pressure gas pipeline projects. Although both types of pipes have superior appearance quality and mechanical properties, they require threaded connections or welding. This not only severely restricts construction efficiency but also necessitates anti-corrosion treatment and frequent subsequent maintenance of the pipelines.

[0003] The existing Chinese utility model patent with publication number CN112113046A discloses a compression-type coated pipe connector anti-damage protection device, which consists of a pipe fitting joint, an anti-damage protective sleeve, a protective cover, a sealing ring, and a pipe. The pipe fitting joint is a straight-shaped round pipe with equal wall thickness. The inner cavity and outer surface of the pipe fitting joint are coated with a protective layer. The inner cavity of the sealing ring protrusion of the pipe fitting joint is fitted with a sealing ring. An anti-damage protective sleeve is provided on the outer wall of the pipe fitting joint. The anti-damage protective sleeve wraps around the round pipe sections at both ends of the pipe fitting joint, the sealing ring protrusion, and the outer wall of the shrink clamp. A protective cover is provided at both ends of the pipe fitting joint. After the sealing rings are installed at both ends of the pipe fitting joint, the protective cover is installed. The pipe passes through the inner diameter of the protective cover, the inner diameter of the sealing ring, and the inner cavity of the round pipe section to the tapered pipe. This invention can not only effectively prevent pipe leakage caused by missed compression but also effectively prevent pipe leakage caused by missed compression. It can also effectively avoid damage to the coating layer of the pipe fitting when the tool jaws are clamped and locked during pipe installation.

[0004] Based on the aforementioned patent searches and the findings of existing equipment technologies, traditional galvanized steel pipes primarily utilize threaded connections, which require highly skilled construction workers. This not only results in long construction periods and low efficiency but also increases the risk of leaks. Welded seamless steel pipes require specialized welders for connections, leading to high labor costs. Furthermore, welding can generate open flames, posing safety hazards and making them unsuitable for gas pipeline maintenance. These issues all negatively impact the usability of the device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a sealing structure for a press-fit coated carbon steel pipe. This structure effectively prevents leaks caused by the traditional threaded connection method used in galvanized steel pipes, which requires highly skilled construction workers, resulting in long construction cycles, low efficiency, and a tendency to leak. This invention solves the aforementioned technical problems.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a press-fit coated carbon steel pipe, including a pipe connection assembly, wherein a clamping and fixing assembly is installed at the lower end of the pipe connection assembly to facilitate quick connection between pipes and to facilitate subsequent overall installation; and a device assembly with the same structure as the pipe connection assembly is installed at the lower end of the clamping and fixing assembly to facilitate subsequent gas transmission.

[0009] The upper end of the clamping and fixing component is equipped with a pipe fitting, and the upper end of the pipe fitting is equipped with a first insertion port. A rubber ring is installed inside the first insertion port. The lower end of the pipe fitting is equipped with a second insertion port. An upper protective tape is installed on the upper end of the first insertion port. The upper protective tape and the lower protective tape are used together to facilitate the subsequent protection of the upper end of the insertion port.

[0010] The upper end of the device assembly is equipped with a second pipe, and the lower end of the second pipe is equipped with a second connector. The second pipe connects the upper structure to facilitate the subsequent gas delivery.

[0011] As a preferred embodiment of this utility model, a first pipe is installed at the upper end of the pipe connection assembly, a marked edge is installed at the lower end of the first pipe, and a first connection port is installed at the lower end of the marked edge. The first connection port is installed at the lower end of the marked edge to facilitate subsequent connection with the first insertion port.

[0012] As a preferred technical solution of this utility model, a lower protective tape is installed at the lower end of the clamping and fixing component, and the upper protective tape is used in combination with the lower protective tape to facilitate the subsequent protection of the upper end of the insertion port.

[0013] As a preferred embodiment of this utility model, a scribing line is installed on the upper end of the device component. The scribing line is installed on the upper end of the second connection port to facilitate the subsequent marking of the installation position of the second pipe.

[0014] As a preferred embodiment of this utility model, the clamping and fixing assembly is installed at the lower end of the first connection port in the pipe connection assembly, and the device assembly is installed at the lower end of the second insertion port in the clamping and fixing assembly.

[0015] As a preferred technical solution of this utility model, the first pipe and the second pipe have the same structure. The diameter of the first pipe is 18mm, 22mm, 28mm, 35mm, 42mm and 54mm. The 18mm, 22mm and 28mm pipe diameters are crimped with a single clamp, and the 35mm, 42mm and 54mm pipe diameters are crimped with a scissor head ring die.

[0016] As a preferred technical solution of this utility model, the upper end of the pipe fitting has a structure that is wide at both ends and narrow in the middle. The first insertion port and the second insertion port have the same structure. The first insertion port is connected to the first connection port. The upper protective tape is a detachable structure.

[0017] As a preferred embodiment of this utility model, the second connection port is connected to the second insertion port, and the scribe line and the mark edge have the same structure.

[0018] Compared with the prior art, the present invention provides a sealing structure for a press-fit coated carbon steel pipe with the following advantages:

[0019] 1. This utility model, through the design of the overall device, replaces the traditional galvanized steel pipes and welded seamless steel pipes with press-fit coated carbon steel pipes. Compared with traditional galvanized steel pipes and welded seamless steel pipes, press-fit coated carbon steel pipes have advantages such as simple and quick installation, good joint sealing, safety and reliability, excellent pipeline corrosion resistance, long service life, strong system compatibility, wide applicable temperature range, economic practicality, high overall cost performance, light weight, material and energy saving, and significant social benefits. Through the combination of press-fit connection and O-ring seal, the installation time is reduced to one-quarter of the traditional installation method. At the same time, due to the convenience of the press-fit connection method, the pipe fitting connection can adapt to various confined spaces and special environments such as narrow pipe wells or seeping trenches. The breakthrough of the press-fit connection method eliminates the twisting link of threaded connection, so that the pipe wall thickness can still meet the national standard with the general thickness of galvanized pipes. It achieves lightweight design, saves raw materials, and effectively prevents the traditional galvanized steel pipe mainly uses threaded connection, which requires high technical skills from construction personnel, resulting in long construction cycle, low efficiency, and easy leakage. Welding seamless steel pipes requires professional welders for connection, which is labor-intensive. Furthermore, welding can easily generate open flames, posing safety hazards and making it unsuitable for gas pipeline repair. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the pipe connection assembly of this utility model;

[0022] Figure 3 This is a schematic diagram of the structural clamping and fixing component of this utility model;

[0023] Figure 4 This is a schematic diagram of the structural device components of this utility model;

[0024] Among them: 1. Pipe connection assembly; 101. First pipe; 102. Marking edge; 103. First connection port; 2. Clamping and fixing assembly; 201. Pipe fitting; 202. First insertion port; 203. Rubber ring; 204. Second insertion port; 205. Upper protective tape; 206. Lower protective tape; 3. Device assembly; 301. Second pipe; 302. Second connection port; 303. Marking line. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1 - Figure 4In this embodiment, a sealing structure for a crimp-type coated carbon steel pipe includes: a pipe connection assembly 1, a clamping and fixing assembly 2 installed at the lower end of the pipe connection assembly 1, a pipe fitting 201 installed at the upper end of the clamping and fixing assembly 2, and a first insertion port 202 installed at the upper end of the pipe fitting 201, a rubber ring 203 installed inside the first insertion port 202, a second insertion port 204 installed at the lower end of the pipe fitting 201, an upper protective tape 205 installed at the upper end of the first insertion port 202, a device assembly 3 installed at the lower end of the clamping and fixing assembly 2, a second pipe 301 installed at the upper end of the device assembly 3, and a second connection port 302 installed at the lower end of the second pipe 301, the clamping and fixing assembly 2 is installed at the lower end of the first connection port 103 in the pipe connection assembly 1, and the device assembly 3 is installed at the lower end of the second insertion port 204 in the clamping and fixing assembly 2.

[0029] With the above structure, the pipe connection component 1 facilitates the installation of the upper components and the subsequent transportation of gas; the clamping and fixing component 2 facilitates the quick connection between pipes and increases the convenience of the overall installation; the device component 3 has the same structure as the pipe connection component 1 and facilitates the subsequent transportation of gas.

[0030] Please see Figure 1 - Figure 4 The upper end of the pipe connection assembly 1 is equipped with a first pipe 101, the lower end of the first pipe 101 is equipped with a marking edge 102, and the lower end of the marking edge 102 is equipped with a first connection port 103. The first pipe 101 and the second pipe 301 have the same structure. The pipe diameter of the first pipe 101 is 18mm, 22mm, 28mm, 35mm, 42mm and 54mm. The 18mm, 22mm and 28mm pipe diameters are crimped with a single clamp, and the 35mm, 42mm and 54mm pipe diameters are crimped with a scissor head ring die.

[0031] With the above structure: the upper structure is connected by installing the first pipe 101 to facilitate the subsequent delivery of gas; the marking edge 102 is installed on the upper end of the first pipe 101 to facilitate the subsequent inspection of the installation position; and the first connection port 103 is installed on the lower end of the marking edge 102 to facilitate the subsequent connection with the first insertion port 202.

[0032] Please see Figure 1 - Figure 4 The lower end of the clamping and fixing component 2 is equipped with a lower protective tape 206. The upper end of the pipe fitting 201 has a structure that is wide at both ends and narrow in the middle. The first insertion port 202 and the second insertion port 204 have the same structure. The first insertion port 202 is connected to the first connection port 103. The upper protective tape 205 is a detachable structure.

[0033] With the above structure: the upper pipe is connected and installed by installing the fitting 201, which facilitates the subsequent transportation of gas. The first insertion port 202 is installed at the upper end of the fitting 201, which facilitates the subsequent connection of the first connection port 103. The rubber ring 203 is installed inside the first insertion port 202, which facilitates the subsequent crimping of the first insertion port 202. The second insertion port 204 is installed at the lower end of the fitting 201, which facilitates the subsequent connection of the second connection port 302. The upper protective tape 205 and the lower protective tape 206 are used together to protect the upper end of the insertion port.

[0034] Please see Figure 1 - Figure 4 The upper end of the device component 3 is equipped with a scribing line 303, and the second connection port 302 is connected to the second insertion port 204. The scribing line 303 has the same structure as the marking edge 102.

[0035] The above structure connects the upper structure by installing the second pipe 301, facilitating subsequent gas delivery. The second connection port 302 is installed at the lower end of the second pipe 301, facilitating subsequent connection with the second insertion port 204. The marking line 303 is installed at the upper end of the second connection port 302, facilitating subsequent marking of the installation position of the second pipe 301.

[0036] First, mark the upper ends of the first pipe 101 and the second pipe 301 with a marker pen according to the required length. Mark the upper end of the first pipe 101 with a marked edge 102. Use a grinding wheel cutter or cutting knife to cut the first pipe 101 at the marked edge 102. After cutting the first pipe 101, to prevent damage to the sealing ring and leakage, use an electric grinder to remove the internal and external burrs at the cut of the first pipe 101. If other methods are used to cut the pipe, be sure to remove the internal and external burrs at the pipe end. Insert the cut first pipe 101 vertically into the fitting 201 and mark the insertion position with a marker pen at the end of the fitting 201. Then pull it out. After comparing the first pipe 101 with the fitting 201 and confirming that the insertion depth is correct, the first pipe 101 is reinserted into the fitting 201, and the crimping operation is awaited. The diameter of the first pipe 101 is 18mm, 22mm, 28mm, 35mm, 42mm, and 54mm. For pipe diameters of 18mm, 22mm, and 28mm, a single-jaw crimping is used, while for pipe diameters of 35mm, 42mm, and 54mm, a scissor-head ring die is used for crimping. Open the jaws and place the first insertion port 202 or the second insertion port 204 (annular groove) of the fitting 201 into the annular groove of the jaws. Then press the crimping gun switch, and the crimping gun will run automatically until the jaws close and automatically release pressure to complete the crimping operation.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a press-fit coated carbon steel pipe, characterized in that, The device includes a pipe connection assembly (1), a clamping and fixing assembly (2) is installed at the lower end of the pipe connection assembly (1), a pipe fitting (201) is installed at the upper end of the clamping and fixing assembly (2), and a first insertion port (202) is installed at the upper end of the pipe fitting (201). A rubber ring (203) is installed inside the first insertion port (202). A second insertion port (204) is installed at the lower end of the pipe fitting (201), and an upper protective tape (205) is installed at the upper end of the first insertion port (202). A device assembly (3) is installed at the lower end of the clamping and fixing assembly (2), a second pipe (301) is installed at the upper end of the device assembly (3), and a second connection port (302) is installed at the lower end of the second pipe (301).

2. The sealing structure of a press-fit coated carbon steel pipe according to claim 1, characterized in that, The upper end of the pipe connection assembly (1) is equipped with a first pipe (101), the lower end of the first pipe (101) is equipped with a marking edge (102), and the lower end of the marking edge (102) is equipped with a first connection port (103).

3. The sealing structure of a press-fit coated carbon steel pipe according to claim 1, characterized in that, The lower end of the clamping and fixing component (2) is fitted with a lower protective tape (206).

4. The sealing structure of a press-fit coated carbon steel pipe according to claim 1, characterized in that, The upper end of the device assembly (3) is fitted with a scribing line (303).

5. The sealing structure of a press-fit coated carbon steel pipe according to claim 1, characterized in that, The clamping and fixing assembly (2) is installed at the lower end of the first connection port (103) in the pipe connection assembly (1), and the device assembly (3) is installed at the lower end of the second insertion port (204) in the clamping and fixing assembly (2).

6. The sealing structure of a press-fit coated carbon steel pipe according to claim 2, characterized in that, The first pipe (101) and the second pipe (301) have the same structure. The pipe diameter of the first pipe (101) is 18mm, 22mm, 28mm, 35mm, 42mm and 54mm. The 18mm, 22mm and 28mm pipe diameters are crimped with a single clamp, and the 35mm, 42mm and 54mm pipe diameters are crimped with a scissor head ring die.

7. The sealing structure of a press-fit coated carbon steel pipe according to claim 3, characterized in that, The upper end of the pipe fitting (201) has a structure that is wide at both ends and narrow in the middle. The first insertion port (202) and the second insertion port (204) have the same structure. The first insertion port (202) is connected to the first connection port (103). The upper protective tape (205) is a detachable structure.

8. The sealing structure of a press-fit coated carbon steel pipe according to claim 4, characterized in that, The second connection port (302) is connected to the second insertion port (204), and the scribe line (303) has the same structure as the mark edge (102).

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