Stainless steel welded pipe convenient to splice

Abstract

The utility model relates to the technical field of stainless steel welded pipes, and discloses a stainless steel welded pipe convenient to splice, which comprises a first welded pipe and a second welded pipe, the front end of the first welded pipe is fixedly connected with a first connecting pipe, the front end of the second welded pipe is fixedly connected with a second connecting pipe, and the surface of the first connecting pipe is provided with a plurality of L-shaped grooves in a circumferential array. A plurality of limiting blocks in a circumferential array are fixedly connected to the surface of the second connecting pipe, an annular groove is formed in the surface of the second connecting pipe, an annular sealing ring is placed in the annular groove, and a fixing mechanism is fixedly connected to the joint of the first welded pipe and the second welded pipe. The first welded pipe and the second welded pipe are clamped, so that a worker can conveniently align and splice the first welded pipe and the second welded pipe, the first welded pipe and the second welded pipe are fixed through the fixing mechanism, meanwhile, the welded pipes are sealed through the annular sealing ring, leakage of liquid or gas is prevented, and the welding quality is improved. Furthermore, a semi-arc-shaped sealing ring is used for carrying out leakage prevention treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel welded pipes, in particular to a stainless steel welded pipe which is easy to splice. Background Art

[0002] Stainless steel welded pipe, referred to as welded pipe, is a steel pipe made by welding common steel or steel strip after curling and forming through a unit and a die. Its production process is simple, production efficiency is high, variety and specifications are many, equipment investment is small, but the general strength is lower than that of seamless steel pipe. However, with the advancement of welding and inspection technology, the quality of welds has been continuously improved, making welded steel pipes gradually replace seamless steel pipes in more and more fields, such as heat exchange equipment pipes, decorative pipes, medium and low pressure fluid pipes, etc.

[0003] The patent with the current announcement number CN215950703U discloses a stainless steel welded pipe, including a welded pipe body, the welded pipe body including a first pipe body and a second pipe body sleeved with the first pipe body, the first pipe body and the second pipe body are sealed and slidably matched, a connecting rod extending toward the second pipe body is fixedly arranged on the first pipe body, the axis of the connecting rod is parallel to the axis of the first pipe body, and a plurality of connecting rods are arranged around the center of the first pipe body, a connecting plate is fixedly arranged on the second pipe body, and a through hole for the connecting rod to pass through is arranged on the connecting plate at a position corresponding to each connecting rod, a locking assembly is arranged between each through hole and each corresponding connecting rod, and a control assembly for simultaneously controlling multiple locking assemblies is arranged on the connecting plate. The above technology has the following advantages and effects: the above technology can change the length to compensate for the dimensional deviation generated during the installation process, thereby reducing labor costs and installation costs, and has better practicality.

[0004] However, the above technology still has the following problems:

[0005] Traditional splicing methods often require complex equipment and cumbersome operating steps, which are not only inefficient, but also difficult to ensure the quality of splicing. It is also easy to cause leakage at the splicing of stainless steel welded pipes, which is not conducive to the transportation of liquids or gases, and will also cause certain economic losses and harm. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a stainless steel welded pipe that is easy to splice, which is convenient for workers to splice the stainless steel welded pipe and ensures the sealing of the spliced ​​joints.

[0007] The utility model provides the following technical solution: a stainless steel welded pipe that is easy to splice, comprising a first welded pipe and a second welded pipe, the front end of the first welded pipe is fixedly connected to a first connecting pipe, the front end of the second welded pipe is fixedly connected to a second connecting pipe, a surface of the first connecting pipe is provided with a plurality of L-shaped grooves in a circumferential array, a surface of the second connecting pipe is fixedly connected with a plurality of limit blocks in a circumferential array, a surface of the second connecting pipe is provided with an annular groove, an annular sealing ring is placed in the annular groove, and a fixing mechanism is fixedly connected at the connection between the first welded pipe and the second welded pipe.

[0008] Further, the outer diameter of the first connecting pipe is the same as the outer diameter of the first welded pipe, and the thickness of the first connecting pipe is half of the thickness of the first welded pipe.

[0009] Further, the inner diameter of the second connecting pipe is the same as the inner diameter of the second welded pipe, and the thickness of the second connecting pipe is half of the thickness of the second welded pipe.

[0010] Furthermore, the fixing mechanism includes fixing blocks placed in the left and right L-shaped grooves, the surfaces of the two fixing blocks are respectively fixedly connected with semi-arc sealing rings, and the outer surfaces of the semi-arc sealing rings are provided with semi-arc fixing plates.

[0011] Furthermore, the annular sealing ring and the semi-arc sealing ring are both rubber rings.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] This stainless steel welded pipe that is easy to splice uses a clamping method for the first welded pipe and the second welded pipe, which is convenient for workers to locate and splice them. At the same time, an annular sealing ring is set on the surface of the second connecting pipe to seal the gap between the first welded pipe and the second welded pipe, effectively preventing the leakage of liquid or gas, and the first welded pipe and the second welded pipe are fixed by a fixing mechanism, and a semi-arc sealing ring is further used to prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the fixing mechanism of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the first connecting pipe and the second connecting pipe of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the annular sealing ring of the utility model;

[0018] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model as a whole.

[0019] In the figure: 1. first welded pipe; 2. second welded pipe; 3. first connecting pipe; 4. second connecting pipe; 5. L-shaped groove; 6. limit block; 7. annular groove; 8. annular sealing ring; 9. fixing mechanism; 901. fixing block; 902. semi-arc sealing ring; 903. semi-arc fixing plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figures 1 to 5 A stainless steel welded pipe that is easy to splice, includes a first welded pipe 1 and a second welded pipe 2, the front end of the first welded pipe 1 is fixedly connected to a first connecting pipe 3, the front end of the second welded pipe 2 is fixedly connected to a second connecting pipe 4, a surface of the first connecting pipe 3 is provided with a plurality of L-shaped grooves 5 in a circumferential array, a surface of the second connecting pipe 4 is fixedly connected with a plurality of limit blocks 6 in a circumferential array, a surface of the second connecting pipe 4 is provided with an annular groove 7, an annular sealing ring 8 is placed in the annular groove 7, and a fixing mechanism 9 is fixedly connected to the connection between the first welded pipe 1 and the second welded pipe 2.

[0022] The stainless steel welded pipe that is easy to splice in the utility model is similar to the existing stainless steel welded pipe structure, such as the patent with announcement number CN215950703U discloses a stainless steel welded pipe. The main improvement of the utility model is: the first welded pipe 1 and the second welded pipe 2 are connected by a clamping method, and the connection is fixed and sealed. Figures 1 to 5 As shown, the stainless steel welded pipe in the utility model which is easy to splice, when splicing, the staff first slowly puts the second connecting pipe 4 into the first connecting pipe 3, and aligns the limit block 6 with the L-shaped groove 5 until the limit block 6 is completely pushed into the L-shaped groove 5, rotates the second connecting pipe 4 so that the limit block 6 is stuck in the L-shaped groove 5, and then inserts the fixing block 901 into the L-shaped groove 5. The fixing block 901 blocks the limit block 6 to prevent the second connecting pipe 4 from rotating back and falling off. At the same time, the two semi-arc fixing plates 903 are attached to the surface of the semi-arc sealing ring 902 and fixed by bolts and nuts.

[0023] like Figure 3 or Figure 4 As shown, the outer diameter of the first connecting pipe 3 is the same as the outer diameter of the first welded pipe 1 , and the thickness of the first connecting pipe 3 is half of the thickness of the first welded pipe 1 .

[0024] Specifically, the outer diameters are the same, so that after the first welded pipe 1 and the second welded pipe 2 are spliced, the diameter of the connection is the same as that of the first welded pipe 1 and the second welded pipe 2, which is convenient for fixing the fixing mechanism 9.

[0025] like Figure 3 or Figure 4 As shown, the inner diameter of the second connecting pipe 4 is the same as the inner diameter of the second welded pipe 2 , and the thickness of the second connecting pipe 4 is half of the thickness of the second welded pipe 2 .

[0026] Specifically, after the first connecting pipe 3 and the second connecting pipe 4 are overlapped, the inner and outer diameters of the first connecting pipe 3 are the same, so as to avoid the influence of the change of the inner diameter of the pipe on the flow of liquid.

[0027] like Figure 2 As shown, the fixing mechanism 9 includes fixing blocks 901 placed in the left and right L-shaped grooves 5, and the surfaces of the two fixing blocks 901 are respectively fixedly connected with semi-arc sealing rings 902, and the outer surfaces of the semi-arc sealing rings 902 are provided with semi-arc fixing plates 903.

[0028] Specifically, the fixing block 901 is inserted into the L-shaped groove 5, and the fixing block 901 blocks the limit block 6 to prevent the second connecting pipe 4 from rotating back and falling off. At the same time, the two semi-arc fixing plates 903 are attached to the surface of the semi-arc sealing ring 902 and fixed with bolts and nuts.

[0029] like Figure 5 As shown, the annular sealing ring 8 and the semi-arc sealing ring 902 are both rubber rings.

[0030] Specifically, the annular sealing ring 8 seals the connection between the first welded pipe 1 and the second welded pipe 2 to prevent liquid or gas from leaking from the connection between the first welded pipe 1 and the second welded pipe 2, and the connection between the first welded pipe 1 and the second welded pipe 2 is sealed again under the joint action of the two semi-arc sealing rings 902.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stainless steel welded pipe that is easy to splice, comprising a first welded pipe (1) and a second welded pipe (2), characterized in that: The front end of the first welding pipe (1) is fixedly connected to a first connecting pipe (3), the front end of the second welding pipe (2) is fixedly connected to a second connecting pipe (4), the surface of the first connecting pipe (3) is provided with a plurality of L-shaped grooves (5) in a circumferential array, the surface of the second connecting pipe (4) is fixedly connected to a plurality of limit blocks (6) in a circumferential array, the surface of the second connecting pipe (4) is provided with an annular groove (7), an annular sealing ring (8) is placed in the annular groove (7), and a fixing mechanism (9) is fixedly connected to the connection between the first welding pipe (1) and the second welding pipe (2).

2. The stainless steel welded pipe that is easy to splice according to claim 1 is characterized in that: The outer diameter of the first connecting pipe (3) is the same as the outer diameter of the first welded pipe (1), and the thickness of the first connecting pipe (3) is half the thickness of the first welded pipe (1).

3. A stainless steel welded pipe that is easy to splice according to claim 1 or 2, characterized in that: The inner diameter of the second connecting pipe (4) is the same as the inner diameter of the second welded pipe (2), and the thickness of the second connecting pipe (4) is half the thickness of the second welded pipe (2).

4. A stainless steel welded pipe that is easy to splice according to claim 1 or 2, characterized in that: The fixing mechanism (9) comprises fixing blocks (901) placed in the left and right L-shaped grooves (5), the surfaces of the two fixing blocks (901) are respectively fixedly connected with semi-arc sealing rings (902), and the outer surfaces of the semi-arc sealing rings (902) are provided with semi-arc fixing plates (903).

5. The stainless steel welded pipe that is easy to splice according to claim 3 is characterized in that: The fixing mechanism (9) comprises fixing blocks (901) placed in the left and right L-shaped grooves (5), the surfaces of the two fixing blocks (901) are respectively fixedly connected with semi-arc sealing rings (902), and the outer surfaces of the semi-arc sealing rings (902) are provided with semi-arc fixing plates (903).

6. The stainless steel welded pipe that is easy to splice according to claim 4, characterized in that: The annular sealing ring (8) and the semi-arc sealing ring (902) are both rubber rings.

7. The stainless steel welded pipe that is easy to splice according to claim 5, characterized in that: The annular sealing ring (8) and the semi-arc sealing ring (902) are both rubber rings.

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