High-pressure water collecting pipe welding threaded plug

Abstract

The utility model relates to the technical field of high-pressure water collecting pipes, and discloses a high-pressure water collecting pipe welding threaded plug which comprises a collecting pipe, the inner wall of the collecting pipe is in threaded connection with a sleeve, one side of the sleeve is fixedly connected with a plug block, and the top and the bottom of the inner wall of the sleeve are fixedly connected with an upper protruding block and a lower protruding block respectively. The upper protruding blocks and the lower protruding blocks are distributed in a staggered mode, a first inclined face and a second inclined face are arranged on the two sides of each upper protruding block respectively, an upper arc face is arranged in the middle of the bottom face of each upper protruding block, a third inclined face and a fourth inclined face are arranged on the two sides of each lower protruding block respectively, and a lower arc face is arranged in the middle of the top face of each lower protruding block. And a side arc surface is arranged on one side of the plugging block. According to the utility model, under the matching of the upper convex block and the lower convex block, the liquid can be guided to flow in a zigzag shape, and the liquid passing through the first inclined surface and the second inclined surface can be impacted with each other, so that the impact force generated when the liquid has a water hammer phenomenon can be reduced, and the phenomenon that a welded junction is fractured before the plug and the collecting pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure water headers, in particular to a high-pressure water header welding thread plug. Background Art

[0002] In hot rolling mills, high-pressure water descaling systems usually need to handle high-pressure, high-flow water flows with a working pressure of 20-40MPa. Due to working pressure fluctuations, water hammer is prone to occur. During the opening and closing process of the valve, the rapid change in water flow velocity can easily cause a pressure shock wave, which can form a water hammer effect.

[0003] During the use of the existing high-pressure descaling header, plugs are welded at both ends to achieve the sealing of the high-pressure descaling header. However, when the impact force of the water hammer is large, it is easy to cause cracks in the weld between the plug and the header, and the replacement of the plug is very cumbersome, which affects the production efficiency. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a high-pressure water collecting pipe welding threaded plug, which aims to improve the existing technology that both ends of the high-pressure descaling collecting pipe are welded with plugs. When the impact force of the water hammer is large, it is easy to cause cracks in the weld between the plug and the collecting pipe, and the replacement of the plug is very cumbersome, thereby affecting the production efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-pressure water collecting pipe welding threaded plug, including a collecting pipe, the inner wall of the collecting pipe is threadedly connected with a sleeve, one side of the sleeve is fixedly connected with a blocking block, the top and bottom of the inner wall of the sleeve are respectively fixedly connected with an upper protrusion and a lower protrusion, the upper protrusion and the lower protrusion are staggered, the two sides of the upper protrusion are respectively provided with a first inclined surface and a second inclined surface, the middle part of the bottom surface of the upper protrusion is provided with an upper arc surface, the two sides of the lower protrusion are respectively provided with a third inclined surface and a fourth inclined surface, the middle part of the top surface of the lower protrusion is provided with a lower arc surface, one side of the blocking block is provided with a side arc surface, the first inclined surface and the third inclined surface are perpendicular to each other, the second inclined surface and the fourth inclined surface are perpendicular to each other, and a fixing component is provided on the outside of the collecting pipe.

[0006] As a further description of the above technical solution:

[0007] A welding strip is arranged between the blocking block and the header.

[0008] As a further description of the above technical solution:

[0009] The outer side of the sleeve is provided with a coarse external thread, and the inner side of the collecting pipe is provided with a coarse internal thread.

[0010] As a further description of the above technical solution:

[0011] The first inclined surface and the fourth inclined surface are parallel to each other, and the second inclined surface and the third inclined surface are parallel to each other.

[0012] As a further description of the above technical solution:

[0013] The fixing assembly includes a clamping ring, a pull rod and a bracket. The clamping ring is fixedly connected to the outside of the collecting pipe, and the bracket is on the other side of the block. One end of the pull rod is arranged inside the clamping ring, and the other end of the pull rod passes through the middle of the bracket, and the outer side of the other end of the pull rod is threadedly connected with a nut.

[0014] As a further description of the above technical solution:

[0015] A clamping groove is provided inside the clamping ring, and a clamping block is fixedly connected to one end of the pull rod, and the clamping block is located inside the clamping groove.

[0016] As a further description of the above technical solution:

[0017] A groove is formed on one side of the bracket, and the blocking block is located inside the groove.

[0018] As a further description of the above technical solution:

[0019] The number of pull rods is four.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the first inclined surface can guide the liquid to approach the third inclined surface, and the third inclined surface can guide the liquid to approach the upper arc groove. Therefore, with the cooperation of the upper protrusion and the lower protrusion, the liquid can be guided to flow in a zigzag shape, and the liquid passing through the first inclined surface and the second inclined surface can collide with each other, thereby reducing the impact force of the liquid when water hammer occurs, thereby avoiding the phenomenon of weld fracture between the plug and the header.

[0022] 2. In the utility model, by welding the clamping ring to the outside of the collecting pipe, the pull rod can be inserted into the inside of the clamping ring, and then the other end of the pull rod can be inserted into the inside of the bracket. At this time, the bracket and the clamping ring can be connected by installing the nut, thereby further improving the stability of the welding between the block and the collecting pipe, thereby avoiding liquid leakage when the weld breaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a high-pressure water header welding thread plug proposed by the utility model;

[0024] Figure 2This is a structural disassembly diagram of the support part of a high-pressure water header welding thread plug proposed by the utility model;

[0025] Figure 3 The utility model discloses a front cross-sectional view of a header with a high-pressure water header welded with a threaded plug.

[0026] Legend:

[0027] 1. Collecting pipe; 2. Sleeve; 3. Block; 4. Welding belt; 5. Upper protrusion; 6. Lower protrusion; 7. First inclined surface; 8. Upper arc surface; 9. Second inclined surface; 10. Third inclined surface; 11. Lower arc surface; 12. Fourth inclined surface; 13. Side arc surface; 14. Snap ring; 15. Pull rod; 16. Bracket; 17. Nut; 18. Block; 19. Slot; 20. Recess. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the specification 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 of 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.

[0029] Reference Figure 1 and Figure 3 The utility model provides an embodiment: a high-pressure water header welding threaded plug, comprising a header 1, the inner wall of the header 1 is threadedly connected with a sleeve 2, one side of the sleeve 2 is fixedly connected with a blocking block 3, the top and bottom of the inner wall of the sleeve 2 are respectively fixedly connected with an upper protrusion 5 and a lower protrusion 6, the upper protrusion 5 and the lower protrusion 6 are staggered, and the two sides of the upper protrusion 5 are respectively provided with a first inclined surface 7 and a second inclined surface 9, an upper arc surface 8 is provided in the middle of the bottom surface of the upper protrusion 5, a third inclined surface 10 and a fourth inclined surface 12 are respectively provided on both sides of the lower protrusion 6, a lower arc surface 11 is provided in the middle of the top surface of the lower protrusion 6, a side arc surface 13 is opened on one side of the blocking block 3, the first inclined surface 7 and the third inclined surface 10 are perpendicular to each other, the second inclined surface 9 and the fourth inclined surface 12 are perpendicular to each other, and a fixing component is provided on the outside of the header 1.

[0030] When in use, first screw the sleeve 2 into the interior of the collecting pipe 1. When a liquid inside the collecting pipe 1 produces a water hammer effect to hit the block 3, the liquid at the top of the collecting pipe 1 will first hit the first inclined surface 7, and the liquid at the bottom of the collecting pipe 1 will then hit the third inclined surface 10. The first inclined surface 7 can be used to guide the liquid to collide with the liquid after hitting the second inclined surface 9. At this time, the impact force of the liquid can be reduced. Then the liquid will hit the lower curved surface 11 along the curvature of the upper curved surface 8, and then pass through the second inclined surface 9 along the lower curved surface 11, and then enter the side curved surface 13. The liquid can be guided through the third inclined surface 10 through the side curved surface 13 to collide with the liquid passing through the lower curved surface 11. At this time, the impact force of the liquid can be further reduced, thereby avoiding the phenomenon that when the liquid has a water hammer effect, the impact force is large and causes the weld between the block 3 and the collecting pipe 1 to crack.

[0031] Reference Figure 1-3 A welding band 4 is provided between the block 3 and the header 1. A coarse external thread is provided on the outer side of the sleeve 2, and a coarse internal thread is provided on the inside of the header 1. The block 3 and the header 1 can be welded by the welding band 4, and the contact area between the sleeve 2 and the header 1 can be increased by the internal and external coarse thread, thereby improving the fixing effect of the connection between the sleeve 2 and the block 3 and the header 1.

[0032] Reference Figure 1-3 , the first inclined surface 7 and the fourth inclined surface 12 are parallel to each other, and the second inclined surface 9 and the third inclined surface 10 are parallel to each other. The fixing assembly includes a clamping ring 14, a tie rod 15 and a bracket 16. The clamping ring 14 is fixedly connected to the outside of the manifold 1, and the bracket 16 is on the other side of the block 3. One end of the tie rod 15 is arranged inside the clamping ring 14, and the other end of the tie rod 15 passes through the middle of the bracket 16, and the outer side of the other end of the tie rod 15 is threadedly connected with a nut 17. A card slot 19 is provided inside the clamping ring 14, and a card block 18 is fixedly connected to one end of the tie rod 15, and the card block 18 is inside the card slot 19. A groove 20 is provided on one side of the bracket 16, and the block 3 is inside the groove 20. Four tie rods 15 are provided.

[0033] After welding, take out the clamping ring 14 and put it on the outside of the collecting pipe 1. At this time, the clamping ring 14 is welded to the outside of the collecting pipe 1, and then the bracket 16 is clamped on the outside of the block 3, and the block 18 is placed inside the groove 20. Finally, take out the pull rod 15 and insert it into the inside of the clamping ring 14, and the block 18 is placed inside the groove 19. One end of the pull rod 15 will enter the middle of the bracket 16 and pass through the bracket 16. Then, the bolts can be screwed in to fix the pull rod 15, thereby improving the stability of the connection between the block 3 and the collecting pipe 1, thereby avoiding liquid leakage when the weld breaks.

[0034] Working principle: When in use, first put the welding belt 4 on the outside of the sleeve 2, then the sleeve 2 can be screwed into the inside of the manifold 1, when the sleeve 2 enters the inside of the manifold 1, the blocking block 3 and the manifold 1 can be welded through the welding belt 4, and then the blocking block 3 can be fixed on the outside of the manifold 1, then take out the clamping ring 14 and put it on the outside of the manifold 1, at this time, the clamping ring 14 is welded to the outside of the manifold 1, then the bracket 16 is clamped on the outside of the blocking block 3, and the clamping block 18 is located inside the groove 20, finally, take out the pull rod 15 and insert it into the inside of the clamping ring 14, and the clamping block 18 enters the inside of the card groove 19, one end of the pull rod 15 will enter the middle part of the bracket 16 and penetrate the bracket 16, then screw in the bolt to fix the pull rod 15, thereby improving the stability of the connection between the blocking block 3 and the manifold 1. Qualitatively, when a liquid inside the collecting pipe 1 produces a water hammer effect to hit the block 3, the liquid at the top of the collecting pipe 1 will first hit the first inclined surface 7, and the liquid at the bottom of the collecting pipe 1 will then hit the third inclined surface 10. The first inclined surface 7 can be used to guide the liquid to collide with the liquid after hitting the second inclined surface 9. At this time, the impact force of the liquid can be reduced. Then the liquid will hit the lower curved surface 11 along the curvature of the upper curved surface 8, and then pass through the second inclined surface 9 along the lower curved surface 11, and then enter the side curved surface 13. The liquid can be guided through the third inclined surface 10 through the side curved surface 13 to collide with the liquid passing through the lower curved surface 11. At this time, the impact force of the liquid can be further reduced, thereby avoiding the phenomenon that when the liquid has a water hammer effect, the impact force is large and causes the weld between the block 3 and the collecting pipe 1 to crack.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. A high-pressure water header welding thread plug, comprising a header (1), characterized in that: The inner wall of the collecting pipe (1) is threadedly connected to a sleeve (2), one side of the sleeve (2) is fixedly connected to a blocking block (3), the top and bottom of the inner wall of the sleeve (2) are respectively fixedly connected to an upper protrusion (5) and a lower protrusion (6), the upper protrusion (5) and the lower protrusion (6) are staggeredly distributed, the two sides of the upper protrusion (5) are respectively provided with a first inclined surface (7) and a second inclined surface (9), the middle part of the bottom surface of the upper protrusion (5) is provided with an upper arc surface (8), the two sides of the lower protrusion (6) are respectively provided with a third inclined surface (10) and a fourth inclined surface (12), the middle part of the top surface of the lower protrusion (6) is provided with a lower arc surface (11), one side of the blocking block (3) is provided with a side arc surface (13), the first inclined surface (7) and the third inclined surface (10) are perpendicular to each other, the second inclined surface (9) and the fourth inclined surface (12) are perpendicular to each other, and a fixing component is provided on the outer side of the collecting pipe (1).

2. A high-pressure water header welding thread plug according to claim 1, characterized in that: A welding strip (4) is provided between the blocking block (3) and the header (1).

3. A high-pressure water header welding thread plug according to claim 1, characterized in that: The outer side of the sleeve (2) is provided with a coarse external thread, and the inner side of the header (1) is provided with a coarse internal thread.

4. A high-pressure water header welding thread plug according to claim 1, characterized in that: The first inclined plane (7) and the fourth inclined plane (12) are parallel to each other, and the second inclined plane (9) and the third inclined plane (10) are parallel to each other.

5. A high-pressure water header welding thread plug according to claim 1, characterized in that: The fixing assembly comprises a clamping ring (14), a pull rod (15) and a bracket (16); the clamping ring (14) is fixedly connected to the outer side of the collecting pipe (1); the bracket (16) is located on the other side of the blocking block (3); one end of the pull rod (15) is arranged inside the clamping ring (14); the other end of the pull rod (15) passes through the middle of the bracket (16); and the outer side of the other end of the pull rod (15) is threadedly connected with a nut (17).

6. A high-pressure water header welding thread plug according to claim 5, characterized in that: A clamping groove (19) is provided inside the clamping ring (14), and a clamping block (18) is fixedly connected to one end of the pull rod (15), and the clamping block (18) is located inside the clamping groove (19).

7. A high-pressure water header welding thread plug according to claim 6, characterized in that: A groove (20) is provided on one side of the bracket (16), and the blocking block (3) is located inside the groove (20).

8. A high-pressure water header welding thread plug according to claim 7, characterized in that: Four pull rods (15) are provided.

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