Steel pipe joint for plastic coating of metal pipeline
By arranging springs, connecting plates and through holes in the plastic-coated steel pipe joints of metal pipes, accurate detection of flange connection spacing is achieved, which solves the leakage problem caused by the lack of accurate detection structure of existing joints and improves sealing and reliability.
Patent Information
- Application Number
- CN202421082933.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing metal pipe plastic-coated steel pipe joints lack the detection structure of joint connection accuracy, which makes it impossible for staff to accurately understand the connection distance between joints, affecting the squeeze pressure of the sealing gasket and prone to leakage.
A steel pipe joint for plastic coating of metal pipes is designed. By setting springs, connecting plates and through holes, the detection of the flange connection spacing is realized. The staff manually rotates the bolts to make the connecting rod break away from the bolt fixation and be pushed by the spring to move until the connecting plate contacts the flange plate on the other side. The distance between the flanges can be known from the scale mark marked on the outside of the connecting rod.
By accurately detecting the connection distance of the flange, the extrusion force of the sealing gasket is ensured, leakage is avoided, and the sealing and reliability of the joint are improved.
Smart Images
Figure CN222392241U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic-coated steel pipes, in particular to a steel pipe joint for plastic-coating metal pipes. Background Art
[0002] Metal pipes are hollow structures used to transport fluids or gases and are widely used in industrial fields. Plastic-coated steel pipes are based on steel pipes and have a layer of plastic anti-corrosion welded on the inner surface or the inner and outer surfaces through specific processes such as spraying, rolling, dipping, etc. Plastic-coated steel pipes usually use flanges as joints for assembly and connection.
[0003] Although the prior art has many benefits during use, it still has the following problems: it lacks a detection structure for the accuracy of joint connection, which results in the staff being unable to accurately understand the connection distance between the joints, affecting the extrusion pressure of the joint on the sealing gasket, and easily causing leakage. Utility Model Content
[0004] The utility model aims to provide a plastic-coated steel pipe joint for a metal pipe to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel pipe joint for plastic-coated metal pipes, comprising a pipe body, a connecting pipe, a connecting rod and a connecting plate, the outer wall of the pipe body is installed with a flange, the outer wall of the flange is installed with connecting pipes distributed in a circular array, a connecting rod is movably installed inside the connecting pipe, and a connecting plate is installed on the outer wall of one end of the connecting rod.
[0006] When using a plastic-coated steel pipe joint for a metal pipe in the technical solution, the flange is assembled by means of external screws and fixing holes, and the sealing gasket ensures the sealing between the pipe bodies. The staff manually turns the bolts to disengage the connecting rod from the bolts and pushes it to move by the spring until the connecting plate contacts the flange on the other side. The spacing between the flanges can be known through the scale lines engraved on the outside of the connecting rod.
[0007] Preferably, the pipe body is provided with fixing holes arranged in a circular array, and the fixing holes and the connecting pipes are arranged in a cross shape. The flange can be connected by screws and the fixing holes.
[0008] Preferably, a sealing gasket is fixedly attached to the outer wall of the pipeline body, and the sealing gasket is designed in a circular shape. The sealing gasket ensures the sealing between the pipeline bodies.
[0009] Preferably, the connecting plate is designed in a disc shape and is located inside the connecting pipe.
[0010] Preferably, a spring is arranged on the outside of the connecting rod, and the connecting plate is elastically connected to the inner wall of the connecting pipe through the spring. The spring force pushes the connecting plate to move horizontally.
[0011] Preferably, a bolt is threadedly connected to the outer wall of one side of the connecting rod, and one side of the bolt is located outside the connecting pipe. The bolt fixes the connecting rod.
[0012] Preferably, a through hole is opened on one side of the inner wall of the connecting pipe, and the bolt is located inside the through hole.
[0013] Preferably, a limiting ring is installed on one side of the inner wall of the connecting pipe, and the inner diameter of the limiting ring is larger than the outer diameter of the connecting plate. The limiting ring limits the connecting plate.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of detecting the connection spacing of the flanges by setting springs, connecting plates and through holes, and the flanges are assembled by external screws and fixing holes, and the sealing gaskets ensure the sealing between the pipe bodies. The staff manually turns the bolts to disengage the connecting rods from the bolts and are pushed by the springs to move until the connecting plate contacts the flange on the other side. The spacing between the flanges can be known through the scale lines engraved on the outside of the connecting rods, ensuring that the staff can accurately understand the connection distance between the flanges, ensuring the extrusion force of the flanges on the sealing gaskets, and avoiding leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the appearance of the pipeline body structure of the utility model;
[0016] Figure 2 It is an enlarged schematic diagram of the flange structure of the utility model;
[0017] Figure 3 It is a cross-sectional schematic diagram of the connecting pipe structure of the utility model;
[0018] Figure 4 It is a partial enlarged schematic diagram of the connecting rod structure of the utility model.
[0019] In the figure: 1. pipe body; 11. flange; 12. sealing gasket; 13. fixing hole; 2. connecting pipe; 21. limiting ring; 22. connecting rod; 23. connecting plate; 24. spring; 25. bolt; 26. through hole. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-Figure 4 , the utility model provides two embodiments:
[0022] Embodiment 1: A steel pipe joint for plastic-coated metal pipes, comprising a pipe body 1, a connecting pipe 2, a connecting rod 22 and a connecting plate 23. A flange 11 is installed on the outer wall of the pipe body 1, and connecting pipes 2 distributed in a circular array are installed on the outer wall of the flange 11. A connecting rod 22 is movably installed inside the connecting pipe 2, and a connecting plate 23 is installed on the outer wall of one end of the connecting rod 22.
[0023] The pipe body 1 is provided with fixing holes 13 arranged in a circular array, and the fixing holes 13 and the connecting pipe 2 are arranged in a cross shape. The flange 11 can be connected through screws and the fixing holes 13.
[0024] The outer wall of the pipe body 1 is fitted with a sealing gasket 12, and the sealing gasket 12 is designed in a circular shape. The sealing gasket 12 ensures the sealing between the pipe bodies 1, and the flange 11 is assembled through external screws and fixing holes 13, and the sealing gasket 12 ensures the sealing between the pipe bodies 1.
[0025] Embodiment 2: A steel pipe joint for plastic-coated metal pipes, comprising a pipe body 1, a connecting pipe 2, a connecting rod 22 and a connecting plate 23. A flange 11 is installed on the outer wall of the pipe body 1, connecting pipes 2 distributed in a circular array are installed on the outer wall of the flange 11, a connecting rod 22 is movably installed inside the connecting pipe 2, and a connecting plate 23 is installed on the outer wall of one end of the connecting rod 22.
[0026] The pipe body 1 is provided with fixing holes 13 arranged in a circular array, and the fixing holes 13 and the connecting pipe 2 are arranged in a cross shape. The flange 11 can be connected through screws and the fixing holes 13.
[0027] A sealing gasket 12 is fixedly attached to the outer wall of the pipeline body 1 , and the sealing gasket 12 is designed in a circular shape. The sealing gasket 12 ensures the sealing between the pipeline body 1 .
[0028] The connecting plate 23 is designed in a disc shape and is located inside the connecting pipe 2 .
[0029] A spring 24 is arranged outside the connecting rod 22, and the connecting plate 23 is elastically connected to the inner wall of the connecting pipe 2 through the spring 24. The elastic force of the spring 24 pushes the connecting plate 23 to move horizontally.
[0030] A bolt 25 is threadedly connected to the outer wall of one side of the connecting rod 22, and one side of the bolt 25 is located outside the connecting pipe 2. The bolt 25 fixes the connecting rod 22.
[0031] A through hole 26 is formed on one side of the inner wall of the connecting pipe 2 , and the bolt 25 is located inside the through hole 26 .
[0032] A limiting ring 21 is installed on one side of the inner wall of the connecting pipe 2, and the inner diameter of the limiting ring 21 is larger than the outer diameter of the connecting plate 23. The limiting ring 21 limits the connecting plate 23, and the flange 11 is assembled through the external screws and the fixing holes 13, and the sealing gasket 12 ensures the sealing between the pipeline body 1. The staff manually turns the bolt 25 to make the connecting rod 22 break away from the bolt 25 and be pushed by the spring 24 until the connecting plate 23 contacts the flange 11 on the other side. The scale lines engraved on the outer side of the connecting rod 22 can be used to know the spacing between the flanges 11, so that the staff can accurately understand the connection distance between the flanges 11, ensure the extrusion force of the flange 11 on the sealing gasket 12, and avoid leakage.
[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A plastic-coated steel pipe joint for a metal pipe, comprising a pipe body (1), a connecting pipe (2), a connecting rod (22) and a connecting plate (23), characterized in that: The outer wall of the pipeline body (1) is installed with a flange (11), the outer wall of the flange (11) is installed with connecting pipes (2) distributed in a circular array, a connecting rod (22) is movably installed inside the connecting pipe (2), and a connecting plate (23) is installed on the outer wall of one end of the connecting rod (22).
2. A plastic-coated steel pipe joint for metal pipes according to claim 1, characterized in that: The pipe body (1) is provided with fixing holes (13) distributed in a circular array inside, and the fixing holes (13) and the connecting pipes (2) are distributed in a cross shape.
3. A plastic-coated steel pipe joint for metal pipes according to claim 1, characterized in that: A sealing gasket (12) is fixedly attached to the outer wall of the pipeline body (1), and the sealing gasket (12) is designed in a circular shape.
4. A plastic-coated steel pipe joint for metal pipes according to claim 1, characterized in that: The connecting plate (23) is designed in a disc shape and is located inside the connecting pipe (2).
5. The plastic-coated steel pipe joint for metal pipes according to claim 1, characterized in that: A spring (24) is arranged on the outside of the connecting rod (22), and the connecting plate (23) is elastically connected to the inner wall of the connecting pipe (2) via the spring (24).
6. The plastic-coated steel pipe joint for metal pipes according to claim 1, characterized in that: A bolt (25) is threadedly connected to the outer wall of one side of the connecting rod (22), and one side of the bolt (25) is located outside the connecting pipe (2).
7. A plastic-coated steel pipe joint for metal pipes according to claim 6, characterized in that: A through hole (26) is provided on one side of the inner wall of the connecting pipe (2), and the bolt (25) is located inside the through hole (26).
8. The plastic-coated steel pipe joint for metal pipes according to claim 1, characterized in that: A limiting ring (21) is installed on one side of the inner wall of the connecting pipe (2), and the inner diameter of the limiting ring (21) is greater than the outer diameter of the connecting plate (23).