Austenitic stainless steel flange forge piece

Abstract

The utility model discloses an austenitic stainless steel flange forge piece which comprises a body with a through hole in the middle and a plurality of mounting holes annularly distributed on the body at the outer edge of the through hole, and is characterized in that a plurality of left strip-shaped grooves are annularly and uniformly distributed on the left side of the inner surface of the through hole, and a plurality of right strip-shaped grooves are annularly and uniformly distributed on the right side of the inner surface of the through hole; the left end of the left strip-shaped groove is communicated with the left side face of the body, and the right end of the right strip-shaped groove is communicated with the right side face of the body. A gap is formed between the right end of the left strip-shaped groove and the right end face of the body, and a gap is formed between the left end of the right strip-shaped groove and the left end face of the body; the left strip-shaped groove and the right strip-shaped groove are arranged in a staggered mode. The follow-up welding installation strength of the flange is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a flange, in particular to an austenitic stainless steel flange forging. Background Art

[0002] Flange, also known as flange flange or flange, is a part that connects shafts to each other, used for connecting pipe ends, or for sealing connection between two components. In conventional methods, pipes and flanges are connected, or containers and flanges are connected, and the connection with flanges is generally welded. Taking the connection between pipes and flanges as an example, the pipe is inserted into the flange, and then the connection between the two is welded. However, the contact between the pipe and the flange is basically tightly connected, so the welding position is at the edge of the flange. When the pipes are connected, they are connected through two flanges. When the flanges are connected, they are locked by bolts, and there is a large locking force between the two. The locking force of the flange will also be transmitted to the pipe at the same time. At the same time, during use, the pipe will also be subjected to force and transmitted to the flange, that is, there is a relative axial force between the flange and the pipe, and the welding point area between the flange and the pipe is not large enough. After a long time of acceptance, it is easy to break or crack at the welding point, thereby affecting the subsequent service life and safety of use. Summary of the invention

[0003] The utility model aims to provide an austenitic stainless steel flange forging. By using the structure, the bonding strength of the flange forging and the connection between the product can be effectively increased, and the stability and safety during use can be ensured.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an austenitic stainless steel flange forging, comprising a body with a through hole in the middle, a plurality of mounting holes are arranged on the body at the outer edge of the through hole, a plurality of left-side strip grooves are evenly distributed in an annular manner on the left side of the inner surface of the through hole, a plurality of right-side strip grooves are evenly distributed in an annular manner on the right side of the inner surface of the through hole, a left end of the left-side strip groove is connected to the left side surface of the body, and a right end of the right-side strip groove is connected to the right side surface of the body;

[0005] There is a distance between the right end of the left strip groove and the right end surface of the body, and there is a distance between the left end of the right strip groove and the left end surface of the body;

[0006] The left-side strip groove and the right-side strip groove are arranged in a staggered manner.

[0007] In the above technical solution, each of the left-side strip grooves is arranged on the left side between the adjacent right-side strip grooves;

[0008] Each of the right-side strip grooves is disposed on the right side between adjacent left-side strip grooves.

[0009] In the above technical solution, an extension ring extending leftward is provided on the left side of the body, the inner surface of the extension ring is flush with the inner surface of the through hole, and the left end of the left strip groove is connected to the left side surface of the extension ring.

[0010] In the above technical solution, a left annular groove is provided on the left inner surface of the extension ring, the left side of the left annular groove is connected with the left side surface of the extension ring, the depth of the left annular groove is smaller than the depth of the left strip groove, the width of the left annular groove is smaller than the length of the left strip groove, and the left strip groove is connected with the left annular groove.

[0011] In the above technical solution, the inner surface of the left annular groove is an inclined surface, and the inner surface of the left annular groove is inclined outward from right to left.

[0012] In the above technical solution, a right annular groove is provided on the right inner surface of the through hole, the right side of the right annular groove is connected to the right side surface of the main body, the depth of the right annular groove is smaller than the depth of the right strip groove, the width of the right annular groove is smaller than the length of the right strip groove, and the right end of the right strip groove is connected to the right annular groove.

[0013] In the above technical solution, the inner surface of the right annular groove is an inclined surface, and the inner surface of the right annular groove is inclined outward from left to right.

[0014] In the above technical solution, at least one annular mounting groove is provided on the right side surface of the body, the annular mounting groove is coaxially arranged with the through hole, and the annular mounting groove is arranged beside the mounting hole.

[0015] In the above technical solution, the cross-section of the annular mounting groove is a V-shaped structure opening to the right.

[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0017] 1. In the utility model, by respectively providing a left strip groove and a right strip groove on the left and right sides of the inner wall of the through hole, the welding area between the flange and the connecting piece to be connected can be increased, thereby increasing the connection strength between the two, thereby extending the service life and safety of use;

[0018] 2. In the utility model, the left strip groove and the right strip groove are staggered with each other, so that the welding points can be staggered with each other, further increasing the welding firmness and strength;

[0019] 3. In the utility model, the left annular groove and the right annular groove are provided, and the inner surface of the annular groove is an inclined surface, which not only increases the flange welding area and strength, but also facilitates the welding work;

[0020] 4. The utility model also provides an annular installation groove, which can be used to add a sealing ring to increase the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 Rear view of

[0023] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0024] Among them: 1. through hole; 2. main body; 3. mounting hole; 4. left strip groove; 5. right strip groove; 6. extension ring; 7. left annular groove; 8. right annular groove; 9. annular mounting groove. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0026] Example 1: See Figures 1 to 3 As shown, an austenitic stainless steel flange forging comprises a body 2 with a through hole 1 in the middle, a plurality of mounting holes 3 are arranged on the body 2 at the outer edge of the through hole 1, a plurality of left strip grooves 4 are evenly arranged in an annular pattern on the left side of the inner surface of the through hole 1, a plurality of right strip grooves 5 are evenly arranged in an annular pattern on the right side of the inner surface of the through hole 1, a left end of the left strip groove 4 is connected to the left side surface of the body 2, and a right end of the right strip groove 5 is connected to the right side surface of the body 2;

[0027] There is a distance between the right end of the left strip groove 4 and the right end surface of the body 2, and there is a distance between the left end of the right strip groove 5 and the left end surface of the body 2;

[0028] The left strip groove 4 and the right strip groove 5 are arranged in a staggered manner.

[0029] In the utility model, the body is directly connected to the component through the through hole. In this embodiment, the component is a pipe, for example, the pipe is directly inserted into the through hole, the right end of the pipe is flush with the right end face of the through hole, the outer diameter of the pipe matches the diameter of the through hole, and after the pipe is inserted into the through hole, the connection between the pipe and the through hole is welded, wherein, when welding, the connection between the right side of the through hole and the pipe is welded, and the connection between the left side of the through hole and the pipe is welded. Since the gap between the pipe and the through hole is relatively small, if the welding is directly performed, the firmness of the welding is not very strong, that is, the welding area of ​​the pipe and the through hole will be relatively small, which affects the firmness of the welding. Therefore, in order to increase the contact area of ​​the welding, the left bar groove and the right bar groove are set, so that when welding, the left bar groove and the right bar groove can increase the welding contact area with the pipe, thereby increasing the welding strength of the body and the pipe. At the same time, welding can also be performed in the left bar groove and the right bar groove to further increase the welding effect. In addition, the left and right strip grooves are staggered, so that the left and right pressure-bearing positions of the welded connection between the pipe and the body are different, so that each position of the circumference of the body has a stress point as much as possible, thereby effectively enhancing the strength of the welding between the body and the pipe.

[0030] Each of the left strip grooves is arranged on the left side between the adjacent right strip grooves; each of the right strip grooves is arranged on the right side between the adjacent left strip grooves. The left strip grooves and the right strip grooves are arranged in a staggered manner. Such staggered welding can make each position of the circumference of the body have a force point, and the two ends of the left strip grooves and the right strip grooves will not pass through the through hole, so that the strength of the body will not be damaged.

[0031] See also Figure 2 , 3 As shown, an extension ring 6 extending to the left is provided on the left side of the main body 2, the inner surface of the extension ring 6 is flush with the inner surface of the through hole 1, the left end of the left strip groove 4 is connected to the left side surface of the extension ring 6, and the left strip groove is arranged on the inner surface of the through hole in the extension ring.

[0032] By setting the extension ring, the contact area between the body and the pipeline can be increased, the flange connection strength can be increased, and deformation of the pipeline at the connection between the flange and the pipeline can be effectively prevented.

[0033] See also Figure 2 , 3 As shown, a left annular groove 7 is provided on the left inner surface of the extension ring 6, the left side of the left annular groove 7 is connected with the left side surface of the extension ring 6, the depth of the left annular groove 7 is smaller than the depth of the left strip groove 4, the width of the left annular groove 7 is smaller than the length of the left strip groove 4, and the left strip groove 4 is connected with the left annular groove 7.

[0034] See also Figure 1 , 3 As shown, a right annular groove 8 is provided on the right inner surface of the through hole 1, the right side of the right annular groove 8 is connected with the right side surface of the main body 2, the depth of the right annular groove 8 is smaller than the depth of the right strip groove 5, the width of the right annular groove 5 is smaller than the length of the right strip groove 5, and the right end of the right strip groove 5 is connected with the right annular groove 8.

[0035] In this embodiment, if the through hole is directly attached to the outer surface of the pipeline, when the two are welded, only the gap at the edge of the through hole and the pipeline connection is welded, and the left and right strip grooves are added to increase the welding strength, and the welding strength may still be insufficient. Therefore, by setting the left annular groove and the right annular groove, when welding, the body and the pipeline can be directly welded through the left annular groove and the right annular groove, which can improve the convenience of welding, and at the same time, it can also increase the welding contact area of ​​the body and the pipeline to ensure the welding strength of the two. At the same time, the width of the left annular groove and the right annular groove will be smaller than the length of the corresponding left and right strip grooves, and the depth will also be smaller than the depth of the corresponding strip grooves, that is, when welding at the left annular groove and the right annular groove, welding is also performed in the left and right strip grooves, which can ensure both welding convenience and welding strength.

[0036] See also Figure 3 As shown, the inner surface of the left annular groove 7 is an inclined surface, and the inner surface of the left annular groove 7 is inclined outward from right to left.

[0037] The inner surface of the right annular groove 8 is an inclined surface, and the inner surface of the right annular groove 8 is inclined outward from left to right.

[0038] The inner surfaces of the left annular groove and the right annular groove are inclined surfaces, so that the cross-section of the welding position in the left annular groove and the right annular groove is a triangular structure, and the contact area between the solder and the body will be larger, which can increase the welding firmness and connection strength of the body and the through hole, and can also reduce the amount of solder used and reduce welding costs.

[0039] See also Figure 1 , 3 As shown, at least one annular mounting groove 9 is provided on the right side surface of the body 2 , the annular mounting groove 9 is coaxially arranged with the through hole 1 , and the annular mounting groove 9 is arranged beside the mounting hole 3 .

[0040] In this embodiment, the mounting hole is used for the bolts to pass through, and the two adjacent and contacting flanges are locked and fixed by the bolts. When the two flanges are connected, a sealing gasket is set between the two flanges, and then passed through the mounting holes of the two flanges by bolts, so as to achieve a sealed connection between the two flanges. Among them, if this sealing gasket is set separately, since the end face of the body and the end face of the sealing gasket are not flat, there is a possibility of leakage due to reasons such as processing accuracy. Therefore, in this embodiment, by setting at least one annular mounting groove on the right side of the body, an annular sealing gasket is also set on the corresponding sealing gasket to face the annular mounting groove, and the annular sealing gasket is inserted into the annular mounting groove. In this way, on the sealing basis of the sealing gasket itself, the annular mounting groove and the corresponding annular sealing gasket are set to add at least one more seal, thereby ensuring the sealing effect.

[0041] The cross section of the annular installation groove is a V-shaped structure opening to the right, and the cross section of the annular sealing gasket is a cylindrical structure, so that it is stuck in the annular installation groove in the V-shaped structure, and after being squeezed, it will press against the two sides of the V-shaped structure, which essentially plays a double sealing role and has a stronger sealing effect.

Claims

1. An austenitic stainless steel flange forging, comprising a body with a through hole in the middle, a plurality of mounting holes arranged around the body at the outer edge of the through hole, characterized in that: The left side ring of the inner surface of the through hole is uniformly distributed with a plurality of left strip grooves, the right side ring of the inner surface of the through hole is uniformly distributed with a plurality of right strip grooves, the left end of the left strip groove is connected to the left side surface of the body, and the right end of the right strip groove is connected to the right side surface of the body; There is a distance between the right end of the left strip groove and the right end surface of the body, and there is a distance between the left end of the right strip groove and the left end surface of the body; The left-side strip groove and the right-side strip groove are arranged in a staggered manner.

2. The austenitic stainless steel flange forging according to claim 1, characterized in that: Each of the left-side strip grooves is arranged on the left side between adjacent right-side strip grooves; Each of the right-side strip grooves is disposed on the right side between adjacent left-side strip grooves.

3. The austenitic stainless steel flange forging according to claim 1, characterized in that: An extension ring extending leftward is provided on the left side of the body, the inner surface of the extension ring is flush with the inner surface of the through hole, and the left end of the left strip groove is connected to the left side surface of the extension ring.

4. The austenitic stainless steel flange forging according to claim 3, characterized in that: A left annular groove is provided on the left inner surface of the extension ring, the left side of the left annular groove is connected with the left side surface of the extension ring, the depth of the left annular groove is smaller than the depth of the left strip groove, the width of the left annular groove is smaller than the length of the left strip groove, and the left strip groove is connected with the left annular groove.

5. The austenitic stainless steel flange forging according to claim 4, characterized in that: The inner surface of the left annular groove is an inclined surface, and the inner surface of the left annular groove is inclined outward from right to left.

6. The austenitic stainless steel flange forging according to claim 1, characterized in that: A right annular groove is provided on the right inner surface of the through hole, the right side of the right annular groove is connected to the right side surface of the main body, the depth of the right annular groove is smaller than the depth of the right strip groove, the width of the right annular groove is smaller than the length of the right strip groove, and the right end of the right strip groove is connected to the right annular groove.

7. The austenitic stainless steel flange forging according to claim 6, characterized in that: The inner surface of the right annular groove is an inclined surface, and the inner surface of the right annular groove is inclined outward from left to right.

8. The austenitic stainless steel flange forging according to claim 1, characterized in that: At least one annular mounting groove is provided on the right side surface of the body, the annular mounting groove is coaxially arranged with the through hole, and the annular mounting groove is arranged beside the mounting hole.

9. The austenitic stainless steel flange forging according to claim 8, characterized in that: The cross section of the annular mounting groove is a V-shaped structure opening to the right.

Images