Supporting device for valve sealing ring welding

Abstract

The utility model relates to the technical field of valve installation, in particular to a supporting device for valve sealing ring welding, which comprises a supporting barrel, the supporting barrel is arranged between two sealing rings, and the supporting barrel is arranged into a wedge shape with one high side and one low side according to the distance between the two sealing rings. The lower side of the supporting round barrel is connected with a fixing structure used for fixing the supporting round barrel, and the effects that the thickness of the abrasion-resistant layer of the sealing ring is reserved to the maximum extent, and the service life of the valve is prolonged are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of valve installation, and in particular to a support device for welding a valve sealing ring. Background Art

[0002] Reference Figure 1 When installing the valve, two relative sealing rings need to be installed at the valve. The sealing rings need to be fixed to the outer shell by welding, and the sealing rings need to be supported and fixed during welding.

[0003] Reference Figure 2 The existing support structure is composed of 8-10 adjustable columns. After the sealing ring is installed in place, the support column of appropriate height is selected according to the distance between the two sealing rings, and then adjusted to support the two sealing rings against each other.

[0004] The above-mentioned prior art solutions have the following defects: the support column is only a point support, and there is no fixing device between the two points. During the welding process, the deformation of the supported position will be smaller than that of the unsupported position, which will form an uneven surface from a microscopic point of view. Finally, during micro-machining, the surface of the sealing ring needs to be polished and smoothed, resulting in a reduction in the thickness of the wear-resistant surface of the sealing ring, thereby reducing the service life of the valve. Utility Model Content

[0005] In order to retain the thickness of the wear-resistant layer of the sealing ring to the maximum extent and extend the service life of the valve, the present application provides a support device for welding the valve sealing ring.

[0006] The above technical objectives of this application are achieved through the following technical solutions:

[0007] A support device for welding valve sealing rings comprises a support barrel, which is arranged between two sealing rings and is arranged in a wedge shape with one side higher and the other side lower according to the distance between the two sealing rings.

[0008] By adopting the above scheme, a supporting drum is provided to evenly support the surface of the sealing ring, thereby reducing the deformation of the sealing ring, making the surface of the sealing ring smooth, and then reducing the grinding thickness of the sealing ring, thereby increasing the thickness of the sealing ring, and finally extending the service life of the valve.

[0009] Optionally, a lower side of the supporting round tube is connected to a fixing structure for fixing the supporting barrel.

[0010] By adopting the above technical solution, the fixing structure enables the supporting barrel to be fixed between the two sealing rings, thereby preventing the supporting barrel from being displaced during welding, which in turn causes the sealing ring support to be unstable and displaced, thereby causing unstable welding of the sealing ring.

[0011] Optionally, the fixing structure includes a fixing threaded rod and a nut, the fixing threaded rod is fixedly connected to the lower side of the supporting barrel, the end of the fixing threaded rod facing away from the supporting barrel passes through the lining cover, and the fixing threaded rod passes through one end of the lining cover and is threadedly connected to the fixing nut.

[0012] By adopting the above technical solution, after the supporting barrel is set between the two sealing rings, the fixed threaded rod passes through the lining cover to reach the outside of the valve body, and then the fixed thread is threadedly connected with the fixed threaded rod, so that the fixed threaded rod and the fixing nut clamp the lining cover, thereby fixing the supporting barrel.

[0013] Optionally, the higher side of the support cylinder is connected with a top embedding structure for facilitating embedding of the support cylinder between two sealing rings.

[0014] By adopting the above technical solution, since the support barrel is located inside the valve body, it is difficult to fully support the support barrel between the two sealing rings. Providing a top embedded structure makes it easier to fully support the support barrel between the two sealing rings, while also strengthening the fixation of the support barrel.

[0015] Optionally, the top embedded structure includes a top embedded threaded rod and a top embedded cover plate, the top embedded cover plate is provided with a clamping structure connected to the valve body flange, a cover plate threaded hole is opened on the surface of the top embedded cover plate, the top embedded threaded rod is threadedly connected in the cover plate threaded hole, and one end of the top embedded threaded rod abuts against the surface of the supporting barrel.

[0016] By adopting the above technical solution, the top embedded cover plate is fixedly connected to the valve body flange through the clamping structure, and then the top embedded threaded rod is rotated to move the top embedded threaded rod toward the inside of the valve body, so that the top embedded threaded rod can tightly press the support barrel between the two sealing rings, thereby making it easier to fully support the support barrel between the two sealing rings.

[0017] Optionally, the top embedded cover plate is fixedly provided with a threaded sleeve on one side of the inner side of the valve body, and the top embedded threaded rod is threadedly connected to the threaded sleeve.

[0018] By adopting the above technical solution, the threaded connection length between the top embedded cover plate and the top embedded threaded rod is increased, thereby increasing the connection stress between the top embedded cover plate and the top embedded threaded rod, making the top embedded structure less susceptible to damage.

[0019] Optionally, a connecting sleeve is provided on one side of the supporting barrel connected to the top embedded structure, and the top embedded threaded rod is inserted into the threaded sleeve.

[0020] By adopting the above technical solution, since the circumferential surface of the supporting barrel is a smooth circular surface, the top embedded threaded rod may directly press against the surface of the supporting circular tube, which may cause the top embedded threaded rod to move along the surface of the supporting barrel, causing the top embedded threaded rod to be subjected to lateral force. By providing a threaded sleeve, the top embedded threaded rod is inserted into the threaded sleeve, thereby limiting the lateral movement of the top embedded threaded rod and making the top embedded threaded rod more durable.

[0021] Optionally, a pressure bearing is arranged in the threaded sleeve, one side of the pressure bearing is fixedly connected to the supporting barrel, and a pressure plate is arranged on the side of the pressure bearing facing away from the supporting barrel.

[0022] By adopting the above technical solution, the top embedded threaded rod is pressed against the pressure plate, so that when the top embedded threaded rod rotates, the pressure plate is driven to rotate, thereby driving the pressure bearing to rotate, thereby reducing the friction between the supporting barrel and the top embedded structure, and further reducing the wear of the supporting barrel.

[0023] Optionally, the clamping structure includes a clamping threaded rod, and a plurality of clamping threaded rods are provided. The plurality of clamping threaded rods are evenly arranged at the edge of the top embedded cover plate. The clamping threaded rod is threadedly connected to the top embedded cover plate. A rotating shaft is fixedly provided on one side of the clamping threaded rod close to the supporting barrel, and the rotating shaft is rotatably connected to the clamping plate.

[0024] By adopting the above technical solution, when it is necessary to clamp the top embedded cover plate and the valve body, the top embedded cover plate is covered on the valve body flange, the clamping plate is rotated so that the clamping plate and the top embedded cover plate clamp the valve body flange, and then the clamping threaded rod is rotated so that the clamping plate and the top embedded cover plate clamp the valve body flange, thereby clamping the top embedded cover plate and the valve body.

[0025] In summary, this application has the following technical effects:

[0026] By setting up a supporting drum and a fixed structure, the surface of the sealing ring is evenly stressed, thereby retaining the thickness of the sealing ring's wear-resistant layer to the maximum extent and extending the service life of the valve;

[0027] The top embedded structure is provided to make the supporting drum more firmly supported;

[0028] The threaded sleeve is provided to make the threaded connection between the top embedded cover plate and the top embedded threaded rod more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a cross-sectional view of the overall structure after the sealing ring is installed;

[0030] Figure 2 It is a cross-sectional view of the overall structure of a support device for sealing ring welding in the prior art;

[0031] Figure 3 It is a cross-sectional view of the overall structure of this application;

[0032] Figure 4 It is a schematic diagram of the overall structure of this application;

[0033] Figure 5 This is a partial structural cross-sectional view intended to emphasize the clamping structure of this application.

[0034] In the figure, 1. supporting barrel; 11. connecting sleeve; 111. pressure bearing; 112. pressure plate; 2. fixing structure; 21. fixing threaded rod; 22. nut; 3. top embedded structure; 31. top embedded threaded rod; 311. knob; 32. top embedded cover plate; 321. threaded sleeve; 4. clamping structure; 41. clamping threaded rod; 411. rotating shaft; 412. end; 42. clamping plate; 421. clamping block; 5. valve body; 51. lining cover; 52. flange; 6. sealing ring. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings.

[0036] In order to facilitate the understanding of the technical solution, the prior art is now described in detail.

[0037] Reference Figure 3 and Figure 4 A support device for welding valve sealing rings includes a support barrel 1, which is in a wedge shape with one side higher than the other side. The support barrel 1 is arranged between two sealing rings 6. A fixing structure 2 for fixing the support barrel 1 is connected to the lower side of the support barrel 1, and a top embedding structure 3 for pushing the support barrel 1 between the two sealing rings 6 is connected to the higher side of the support barrel 1. When the sealing ring 6 needs to be welded, the sealing ring 6 is placed at the required installation position, and then the support barrel 1 is placed between the two sealing rings 6, and then the support barrel 1 is completely pressed between the two sealing rings 6 through the top embedding structure 3, and then the support barrel 1 is fixed between the two sealing rings 6 through the fixing structure 2, and then the sealing ring 6 is welded. After the welding machine with the sealing ring 6 is completed and cooled, the support barrel 1 is taken out, thereby completing the installation of the sealing ring 6.

[0038] Reference Figure 3 and Figure 4 The fixing structure 2 includes a fixing threaded rod 21 and a nut 22. The fixing threaded rod 21 is fixedly arranged on the lower side of the support barrel 1, and the lower side of the support barrel 1 is close to the lining cover 51 of the valve body 5. The end of the fixing threaded rod 21 away from the fixing threaded rod 21 passes through the lining cover 51 to the outside of the valve body 5. The nut 22 is located outside the valve body 5 and is threadedly connected with the fixing threaded rod 21. The support barrel 1 is completely inserted between the two sealing rings 6, and then the nut 22 is rotated so that the nut 22 presses the lining rod and fixes the support barrel 1 at the same time to prevent the support round tube from moving during welding, resulting in the sealing ring 6 being loosely supported.

[0039] Reference Figure 3 and Figure 4The top embedded structure 3 includes a top embedded threaded rod 31 and a top embedded cover plate 32. The top embedded cover plate 32 is covered on the surface of the flange 52 of the valve body 5. A clamping structure 4 for clamping the top embedded cover plate 32 on the surface of the flange 52 is provided at the edge of the top embedded cover plate 32. A threaded sleeve 321 is fixedly provided at the center of the top embedded cover plate 32. The threaded sleeve 321 is located on the side of the top embedded cover plate 32 located inside the valve body 5. The top embedded threaded rod 31 passes through the threaded sleeve 321 and is threadedly connected with the threaded sleeve 321. A knob 311 is fixedly provided at one end of the top embedded threaded rod 31 located outside the valve body 5. The operator can turn the knob 311 to more conveniently turn the top embedded threaded rod 31. A connecting sleeve 11 is fixedly provided on the higher side of the support cylinder 1. The connecting sleeve 11 is coaxial with the threaded sleeve 321. A pressure bearing 111 is provided in the connecting sleeve 11. One side of the pressure bearing 111 is fixedly connected to the support cylinder 1, and the other side of the pressure bearing 111 is fixedly connected to the pressure plate 112. When it is necessary to install the sealing ring 6, the supporting barrel 1 is placed between the two sealing rings 6, and then the top embedded cover plate 32 is covered on the surface of the flange 52, and the top embedded cover plate 32 is clamped on the surface of the flange 52 through the clamping structure 4, and at the same time, the top embedded threaded rod 31 is inserted into the connecting sleeve 11, and then the knob 311 is turned to make the top embedded threaded rod 31 screw into the valve body 5, and then the top embedded threaded rod 31 contacts the pressure plate 112 and drives the pressure plate 112 to rotate, so as to firmly support the supporting cylinder between the two sealing rings 6, so that the support of the sealing ring 6 is more stable.

[0040] Reference Figure 3 and Figure 2 The clamping structure 4 includes a clamping threaded rod 41 and a clamping plate 42. A threaded hole is provided at the edge of the cover plate. The clamping threaded rod 41 is threadedly connected in the threaded hole. A rotating shaft 411 is connected to the side of the clamping threaded rod 41 close to the valve body 5. The rotating shaft 411 passes through the clamping plate 42 and is rotatably connected to the clamping plate 42. A terminal 412 is fixedly provided at one end of the rotating shaft 411 passing through the clamping plate 42. The rotating shaft 411 is provided at the edge close to the clamping plate 42. When it is necessary to clamp the top embedded cover plate 32 on the surface of the flange 52, the top embedded cover plate 32 covers the flange 52, and then the clamping plate 42 is rotated so that the clamping plate 42 and the top embedded cover plate 32 are located on both sides of the flange 52. Then, the clamping threaded rod 41 is rotated to drive the clamping plate 42 and the top embedded cover plate 32 to clamp the flange 52, thereby clamping the top embedded cover plate 32 on the surface of the flange 52.

[0041] The specific implementation principle of the present application is as follows: when welding of the sealing ring 6 is required, the sealing ring 6 is placed at the required position, and then the supporting drum 1 is placed between the two sealing rings 6 for support, and at the same time, the fixing threaded rod 21 passes through the lining rod, and then the top embedded cover plate 32 is covered on the surface of the flange 52, and at the same time, the top embedded threaded rod 31 is inserted into the connecting sleeve 11, and then the clamping plate 42 is rotated so that the clamping plate 42 and the top embedded cover plate 32 clamp the flange 52, and then the clamping threaded rod 41 is rotated to clamp The plate 42 and the top embedded cover plate 32 are clamped, so that the top embedded cover plate 32 is clamped on the surface of the flange 52, and then the knob 311 is turned to rotate the top embedded threaded rod 31 toward the valve body 5, so that the top embedded threaded rod 31 tightly presses the support round tube between the two sealing rings 6, and the pressure bearing 111 reduces the friction between the support cylinder 1 and the top embedded threaded rod 31, and then the nut 22 is screwed onto the fixed threaded rod 21, so that the nut 22 presses the liner 51, thereby fixing the support cylinder 1. Then the sealing ring 6 is welded, and after the welding of the sealing ring 6 is completed and cooled, the welding device is removed to complete the welding of the sealing ring 6. Compared with the existing support structure, the welding support device can make the surface of the sealing ring 6 bear force evenly, reduce the deformation of the sealing ring 6 due to thermal expansion and contraction, keep the surface of the sealing ring 6 flat, thereby reducing the grinding of the sealing ring 6, and finally extending the service life of the valve.

[0042] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A support device for welding a valve sealing ring, characterized in that: The invention comprises a supporting cylinder (1), wherein the supporting cylinder (1) is arranged between two sealing rings (6), and the supporting cylinder (1) is arranged in a wedge shape with one side higher and the other side lower according to the distance between the two sealing rings (6), and a fixing structure (2) for fixing the supporting cylinder (1) is connected to the lower side of the supporting cylinder.

2. A valve seal ring welding support device according to claim 1, characterized in that: The fixing structure (2) comprises a fixing threaded rod (21) and a nut (22); the fixing threaded rod (21) is fixedly connected to the lower side of the supporting cylinder (1); one end of the fixing threaded rod (21) facing away from the supporting cylinder (1) passes through the lining cover (51); and one end of the fixing threaded rod (21) passes through the lining cover (51) and is threadedly connected to the fixing nut (22).

3. A valve seal ring welding support device according to claim 1, characterized in that: The higher side of the support cylinder (1) is connected with a top embedding structure (3) for conveniently embedding the support cylinder (1) between two sealing rings (6).

4. A valve seal ring welding support device according to claim 3, characterized in that: The top embedded structure (3) comprises a top embedded threaded rod (31) and a top embedded cover plate (32); the top embedded cover plate (32) is provided with a clamping structure (4) connected to the flange (52) of the valve body (5); a threaded hole is provided on the surface of the top embedded cover plate (32); the top embedded threaded rod (31) is threadedly connected in the threaded hole; one end of the top embedded threaded rod (31) abuts against the surface of the supporting barrel (1).

5. A valve seal ring welding support device according to claim 4, characterized in that: The top embedded cover plate (32) is located on one side of the inner side of the valve body (5) and is fixedly provided with a threaded sleeve (321), and the top embedded threaded rod (31) is threadedly connected to the threaded sleeve (321).

6. A valve seal ring welding support device according to claim 4, characterized in that: A connecting sleeve (11) is provided on one side of the supporting drum (1) connected to the top embedded structure (3), and the top embedded threaded rod (31) is inserted into the threaded sleeve (321).

7. A valve seal ring welding support device according to claim 6, characterized in that: A pressure bearing (111) is arranged in the threaded sleeve (321), one side of the pressure bearing (111) is fixedly connected to the supporting barrel (1), and a pressure plate (112) is arranged on the side of the pressure bearing (111) facing away from the supporting barrel (1).

8. A valve seal ring welding support device according to claim 7, characterized in that: The clamping structure (4) comprises a clamping threaded rod (41), a plurality of the clamping threaded rods (41) are provided, and the plurality of the clamping threaded rods (41) are evenly arranged at the edge of the top embedded cover plate (32), the clamping threaded rod (41) is threadedly connected to the top embedded cover plate (32), and a rotating shaft (411) is fixedly provided on one side of the clamping threaded rod (41) close to the supporting barrel (1), and the rotating shaft (411) is rotatably connected to the clamping plate (42).

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