Stainless steel flange convenient to position and connect

Abstract

The utility model discloses a stainless steel flange convenient to position and connect, which relates to the field of pipeline connection and comprises a flange mechanism, the flange mechanism comprises a first flange plate, a large metal pipe is fixed on one side of the first flange plate, and a small metal pipe is fixed on one side of the first flange plate in the large metal pipe. A rubber ring is installed on the first flange plate and located between the large metal pipe and the small metal pipe, a threaded rod is arranged on one side of the large metal pipe, a second flange plate is connected to the side, away from the large metal pipe, of the first flange plate, and a corrugated pipe is fixed to the side, away from the first flange plate, of the second flange plate. And a third flange plate is fixed at the other end of the corrugated pipe. The large metal pipe and the small metal pipe are arranged to form the tubular gap to primarily fix the pipeline, so that a welder can fix the threaded rod after simple calibration without the aid of other fixing equipment, the flange plate is completely fixed on the pipeline, and the welding of the welder is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of pipeline connection, in particular to a stainless steel flange which is convenient for positioning and connection. Background Art

[0002] There are three types of pipe connection: threaded connection, groove connection and flange connection. Flange connection is suitable for places that require disassembly, high strength and high sealing requirements. There are many ways to install flanges, such as flat welding, butt welding, socket welding and loose sleeve. However, no matter which welding method is used, the flange plate must be kept parallel, the sealing surface of the flange cannot be damaged, and it needs to be cleaned.

[0003] Socket welding flange refers to a method in which the metal pipe to be welded is inserted into the flange, a 10mm position is reserved, and the interface between the inside and outside of the pipe and the flange is welded. The socket welding flange has good rigidity, small deformation during welding, and good sealing of the welded flange. It can be used in occasions with a pressure of 1.0 to 10.0 MPa.

[0004] Because the flange connection is to connect two parallel pipes, the flanges on both sides need to be calibrated before welding to ensure that the two flanges are parallel before welding. Otherwise, the flange connection will not be tight and the service life will be short. Flange calibration requires not only experience but also manual or certain equipment to fix the flange to be welded so that the welder can weld. Some flanges are heavy and can only be fixed with the help of equipment. Therefore, the calibration process is very troublesome and prone to errors. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a stainless steel flange that is easy to position and connect, so as to solve the technical problems mentioned in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel flange that is easy to position and connect, including a flange mechanism, the flange mechanism including a first flange plate, a large metal pipe is fixed on one side of the first flange plate, and a small metal pipe is fixed on one side of the first flange plate located in the large metal pipe, the first flange plate is located between the large metal pipe and the small metal pipe and a rubber ring is installed, a threaded rod is provided on one side of the large metal pipe, a second flange plate is connected to the side of the first flange plate away from the large metal pipe, a bellows is fixed on the side of the second flange plate away from the first flange plate, and a third flange plate is fixed to the other end of the bellows.

[0007] By adopting the above technical solution and providing a flange mechanism, the first flange can be simply calibrated and fixed on the pipe to be welded, which makes welding easier for welders.

[0008] The utility model is further configured that the threaded rod is threadedly connected to the large metal pipe and penetrates the inner and outer walls of the large metal pipe.

[0009] By adopting the above technical solution and arranging the threaded rod, the flange mechanism can be fixed on the pipeline, and the welder can perform welding without the aid of manual labor or equipment for fixing.

[0010] The utility model is further configured such that the first flange and the second flange are connected by multiple sets of bolts and nuts.

[0011] By adopting the above technical solution, the first flange and the second flange are connected by multiple sets of bolts and nuts, so that the connection between the flanges is tighter.

[0012] The utility model is further configured that the bellows is made of stainless steel.

[0013] By adopting the above technical solution and providing a bellows with good toughness, the flange can be welded even when it is fully calibrated, and the influence of the flange interface caused by subsequent vibration can be prevented.

[0014] The utility model is further configured that the other side of the third flange is connected to a same flange mechanism.

[0015] By adopting the above technical solution and providing flange mechanisms at both ends, two pipelines can be quickly connected together.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] 1. The utility model preliminarily fixes the pipeline by setting a large metal pipe and a small metal pipe to form a tubular gap, so that the welder does not need to use other fixing equipment, which is easy and efficient. After a simple calibration, the threaded rod is fixed, so that the flange is completely fixed on the pipeline, which is more convenient for the welder to weld.

[0018] 2. The utility model provides a bellows having a 40% stretchability. If the flanges on both sides are welded without being calibrated, the stretchability of the bellows can effectively avoid the problem of uncalibrated flanges, and the welder can quickly weld and install the flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of the utility model;

[0021] Figure 3 It is a partial stereogram of the utility model;

[0022] Figure 4 It is a top view of the utility model.

[0023] In the figure: 1. flange mechanism; 101. first flange; 102. large metal pipe; 103. small metal pipe; 104. rubber ring; 105. threaded rod; 2. second flange; 3. bellows; 4. third flange; 5. bolt; 6. nut. DETAILED DESCRIPTION

[0024] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0025] The following describes an embodiment of the utility model based on its overall structure.

[0026] A stainless steel flange that is easy to position and connect, such as Figure 1-4 As shown, the flange mechanism 1 includes a first flange 101, a large metal pipe 102 is fixed on one side of the first flange 101, and a small metal pipe 103 is fixed in the large metal pipe 102 on one side of the first flange 101, a rubber ring 104 is installed between the large metal pipe 102 and the small metal pipe 103, and a threaded rod 105 is arranged on one side of the large metal pipe 102. First, the pipeline interface is installed and removed in the gap between the large metal pipe 102 and the small metal pipe 103 of the flange mechanism 1, and then a simple calibration is performed, and the threaded rod 105 is screwed to make the flange mechanism 1 It can be fixed on the pipeline, and then the interface between the outer side of the pipeline and the large metal pipe 102 is welded. Similarly, the flange mechanism 1 is installed on another pipeline. The side of the first flange 101 away from the large metal pipe 102 is connected to the second flange 2, and the side of the second flange 2 away from the first flange 101 is fixed with a bellows 3. The other end of the bellows 3 is fixed with a third flange 4. The first flange 101 and the second flange 2 are connected by bolts 5 and nuts 6. Similarly, the flange on another pipeline is installed by bolts 5 and nuts 6, and then the bellows 3 is welded between the second flange 2 and the third flange 4.

[0027] See also Figure 1 and Figure 2 The threaded rod 105 is threadedly connected to the large metal pipe 102 and penetrates the inner and outer walls of the large metal pipe 102. By setting the threaded rod 105, the flange mechanism 1 can be fixed on the pipeline, and the welder can perform welding without the help of manual or equipment fixation.

[0028] See also Figure 1 and Figure 2The first flange 101 and the second flange 2 are connected by bolts 5 and nuts 6. The first flange 101 and the second flange 2 are connected by multiple sets of bolts 5 and nuts 6, so that the connection between the flanges is tighter.

[0029] See also Figure 1 and Figure 2 The bellows 3 is made of stainless steel. By providing the bellows 3 with good toughness, the flange can be fully calibrated and welded, and the influence of the flange interface caused by subsequent vibration can be prevented.

[0030] See also Figure 1 and Figure 2 The other side of the third flange 4 is connected to an identical flange mechanism 1. By setting both ends to be connected to the flange mechanism 1, the two pipes can be quickly connected together.

[0031] The working principle of the utility model is as follows: firstly, the pipeline interface is installed and disassembled in the gap between the large metal pipe 102 and the small metal pipe 103 of the flange mechanism 1, and then a simple calibration is performed, and the threaded rod 105 is screwed so that the flange mechanism 1 can be fixed on the pipeline, and then the interface between the outer side of the pipeline and the large metal pipe 102 is welded, and similarly, the flange mechanism 1 is installed on another pipeline, and the first flange 101 and the second flange 2 are connected by bolts 5 and nuts 6, and similarly, the flange on another pipeline is installed by bolts 5 and nuts 6, and then the bellows 3 is welded between the second flange 2 and the third flange 4.

[0032] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A stainless steel flange that is easy to position and connect, comprising a flange mechanism (1), characterized in that: The flange mechanism (1) comprises a first flange (101), a large metal pipe (102) is fixed on one side of the first flange (101), and a small metal pipe (103) is fixed on one side of the first flange (101) located inside the large metal pipe (102), a rubber ring (104) is installed between the first flange (101) and the small metal pipe (103), a threaded rod (105) is arranged on one side of the large metal pipe (102), a second flange (2) is connected to the side of the first flange (101) away from the large metal pipe (102), a bellows (3) is fixed on the side of the second flange (2) away from the first flange (101), and a third flange (4) is fixed to the other end of the bellows (3).

2. A stainless steel flange that is easy to position and connect according to claim 1, characterized in that: The threaded rod (105) is threadedly connected to the large metal pipe (102) and penetrates the inner and outer walls of the large metal pipe (102).

3. The stainless steel flange for easy positioning and connection according to claim 1, characterized in that: The first flange (101) and the second flange (2) are connected via a plurality of sets of bolts (5) and nuts (6).

4. The stainless steel flange for easy positioning and connection according to claim 1, characterized in that: The bellows (3) is made of stainless steel.

5. The stainless steel flange for easy positioning and connection according to claim 1, characterized in that: The other side of the third flange (4) is connected to an identical flange mechanism (1).

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