Pneumatic tooling for ball valves

Abstract

This utility model relates to a pneumatic tooling for ball valves, including a base plate, a fixed seat, and a movable seat. Bearing seats are built into the fixed and movable seats, and a first horizontal cylinder and a second horizontal cylinder are fixed thereon. The key technical points are: the cylinder rods of the first and second horizontal cylinders are arranged opposite each other and each is fixed with a support plate. Multiple connecting parts are evenly arranged on the outer circumference of the support plate. The other end of each connecting part on the same support plate is connected to a flange-shaped positioning plate. Horizontal support pipe sections are provided on the inner edges of the opposite sides of the two flange-shaped positioning plates. A detection plate is inserted into the other end of the flange-shaped positioning plate. One detection plate has an image sensor at its center, and the other detection plate has coordinate axis marks at its center that cooperate with the image sensor. Pressure detection components are arranged on the opposite end faces of the two flange-shaped positioning plates. This utility model meets the welding pressure requirements and ensures the concentricity of the left and right end pipes of the fully welded ball valve before welding, further improving production quality.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology for ball valves, and specifically to a pneumatic fixture for ball valves. Background Technology

[0002] Fully welded ball valves are commonly used in oil and gas pipelines. Existing fully welded ball valves include a valve body, a ball core within the valve body, valve seats positioned on either side of the ball core, end pipes welded to both sides of the valve body to fix the valve seats, a valve stem penetrating the valve body and driving the ball core's rotation, and a drive component for rotating the valve stem. During assembly, the ball core, valve stem, and valve body are first installed together, the valve seats are fixed to the inner end of the end pipes, and then the two end pipes with valve seats are welded to both ends of the valve body. Before welding the end pipes to the valve body, tooling is typically used for pre-positioning.

[0003] For example, CN 223099042 U discloses a pneumatic tooling for assembling fully welded ball valves. It includes a frame, a first bearing housing fixedly mounted on the frame, a first rotating gripper housed within the first bearing housing, and a positioning hole on the end face of the first rotating gripper. A linear guide rail is mounted on one side of the first bearing housing on the frame, and a second bearing housing is connected to the linear guide rail via a slider. A second rotating gripper is housed within the second bearing housing. A cylinder is mounted on the frame, and the piston rod of the cylinder is connected to the second bearing housing. The cylinder is connected to an air source via an air pipe, a pneumatic valve, and a precision pressure reducing valve. This pneumatic tooling uses the first and second rotating grippers to clamp the fully welded ball valve to be assembled, pressing it tightly. The cylinder outputs stable pressure, resulting in a high yield rate after valve welding and assembly, aiming to improve valve production efficiency. However, the following problem remains: before welding, the concentricity of the left and right end pipes of the fully welded ball valve should be ensured; however, this pneumatic tooling lacks the necessary technical means. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic tooling for ball valves that is structurally reasonable and reliable in use, which solves the above problems, meets the welding pressure requirements, and ensures the concentricity of the left and right end pipes of the fully welded ball valve before welding, thereby further improving production quality.

[0005] The technical solution of this utility model is: A pneumatic tooling for a ball valve includes a base plate, a fixed seat, and a movable seat. The upper surface of the base plate has an X-axis slide rail. The fixed seat and the movable seat are located at both ends of the X-axis slide rail. The bottom surface of the movable seat has an X-axis groove that mates with the X-axis slide rail. Bearing seats are built into the fixed seat and the movable seat, and a first horizontal cylinder and a second horizontal cylinder are fixed within the bearing seats. The key technical features are: the cylinder rods of the first and second horizontal cylinders are arranged opposite each other and each is fixed with a support plate; multiple connecting parts are evenly arranged on the outer circumference of the support plate; the other ends of all connecting parts on the same support plate are connected to a flange-shaped positioning plate; horizontal support pipe sections are provided on the inner edges of the opposite sides of the two flange-shaped positioning plates; the outer wall dimensions of the horizontal support pipe sections match the inner wall dimensions of the end pipe of the ball valve; a detection plate is inserted into the other end of the flange-shaped positioning plate; an image sensor is located at the center of one detection plate, and a coordinate axis mark mates with the image sensor is located at the center of the other detection plate; pressure detection components are arranged on the opposite end faces of the two flange-shaped positioning plates.

[0006] The aforementioned pneumatic tooling for ball valves has two flange-shaped positioning discs with concentric annular grooves on their opposite side ends, which surround the horizontal support pipe section. The other side end of the flange-shaped positioning discs has a plurality of axial through holes that communicate with the concentric annular grooves. An annular pressure bearing plate is arranged in the concentric annular groove. The pressure detection assembly includes a plurality of pressure sensors fixed in the axial through holes and connected to the annular pressure bearing plate.

[0007] The aforementioned pneumatic tooling for ball valves has a valve body support located near the fixed seat on the base plate. The valve body support is a telescopic seat and has a tray on top.

[0008] The aforementioned pneumatic tooling for ball valves comprises a screw, a first locking nut assembly and a second locking nut assembly located at both ends of the screw, and multiple snap-fit ​​grooves evenly distributed on the outer circumferential surface of the support plate and the outer circumferential surface of the flange-shaped positioning plate, with the screw embedded in the snap-fit ​​grooves. The first locking nut assembly consists of two first locking nuts clamping the support plate, and the second locking nut assembly consists of two second locking nuts clamping the flange-shaped positioning plate.

[0009] The aforementioned pneumatic tooling for ball valves has an annular lamp tube on the detection plate at the position marked around the coordinate axis.

[0010] The beneficial effects of this utility model are: 1. The image sensor and coordinate axis markers work together to make the horizontal support pipe sections of the two flange-shaped positioning plates concentric, so as to ensure good concentricity of the two end pipes loaded on them and ensure the quality of assembly and welding.

[0011] 2. The support plate can be connected to the flange-shaped positioning plate using connectors, which also makes it easy to replace the flange-shaped positioning plate to accommodate end pipes of different sizes.

[0012] 3. Utilize pressure detection components to detect assembly pressure signals in real time, ensuring pressure requirements and further guaranteeing welding quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the flange-shaped positioning disc of this utility model; Figure 3 This is a diagram showing the usage state of this utility model.

[0014] In the diagram: 1. Bearing housing, 2. Fixed seat, 3. First horizontal cylinder, 4. Screw, 5. Support plate, 6. First locking nut assembly, 7. Flange-shaped positioning plate, 8. Second locking nut assembly, 9. Annular pressure plate, 10. Horizontal support pipe section, 11. Image sensor, 12. Detection plate, 13. Pressure sensor, 14. Tray, 15. Valve body support, 16. Second horizontal cylinder, 17. Moving seat, 18. Annular lamp tube, 19. Coordinate axis mark, 20. Base plate, 21. X-axis slide, 22. Snap-fit ​​groove, 23. Concentric annular groove, 24. Axial through hole, 25. Valve stem, 26. End pipe, 27. Valve body, 28. Valve seat, 29. Ball core. Detailed Implementation

[0015] The present invention will be described in detail with reference to the accompanying drawings.

[0016] like Figures 1-3 As shown, the pneumatic tooling for a ball valve includes a base plate 20, a fixed seat 2, and a movable seat 17. The upper surface of the base plate 20 is provided with an X-axis slide rail 21. The fixed seat 2 and the movable seat 17 are located at both ends of the X-axis slide rail 21. The bottom surface of the movable seat 17 is provided with an X-axis groove that mates with the X-axis slide rail 21. Bearing seats 1 are respectively built into the fixed seat 2 and the bearing seats 1 are used to fix the first horizontal cylinder 3 and the second horizontal cylinder 16. In this embodiment, a valve body support 15 is provided near the fixed seat 2 on the base plate 20. The valve body support 15 is a telescopic seat and has a tray 14 on its top.

[0017] In this embodiment, the cylinder rods of the first horizontal cylinder 3 and the second horizontal cylinder 16 are arranged opposite to each other and are respectively fixed with support plates 5. Multiple connecting parts are evenly arranged on the outer circumferential surface of the support plates 5, and the other ends of each connecting part on the same support plate 5 are connected to a flange-shaped positioning plate 7. In this embodiment, the connecting parts consist of a screw 4, a first locking nut group 6 and a second locking nut group 8 located at both ends of the screw 4. Multiple U-shaped locking grooves 22 are evenly provided on the outer circumferential surface of the support plate 5 and the outer circumferential surface of the flange-shaped positioning plate 7, respectively. The screw 4 is embedded in the locking grooves 22. The first locking nut group 6 consists of two first locking nuts that clamp the support plate 5, and the second locking nut group 8 consists of two second locking nuts that clamp the flange-shaped positioning plate 7.

[0018] Two flange-shaped positioning discs 7 have horizontal support pipe sections 10 on their opposite inner edges, and the outer wall dimensions of the horizontal support pipe sections 10 match the inner wall dimensions of the end pipe 26 of the ball valve.

[0019] The other port of the flange-shaped positioning plate 7 is inserted into the detection plate 12. One detection plate 12 has an image sensor 11 at its center, and the other detection plate 12 has a coordinate axis mark 19 at its center that cooperates with the image sensor 11. In this embodiment, the detection plate 12 has an annular lamp tube 18 at the position around the coordinate axis mark 19.

[0020] Pressure detection components are respectively arranged on the opposite end faces of the two flange-shaped positioning discs 7. In this embodiment, the opposite end faces of the two flange-shaped positioning discs 7 are respectively provided with concentric annular grooves 23 surrounding the horizontal support pipe section 10. The other end face of the flange-shaped positioning discs 7 is uniformly provided with a plurality of axial through holes 24 communicating with the concentric annular grooves 23. An annular pressure bearing plate 9 is arranged in the concentric annular grooves 23. The pressure detection components include a plurality of pressure sensors 13 fixed in the axial through holes 24 and connected to the annular pressure bearing plate 9.

[0021] Working principle: 1. When using, place the valve body 27 to be assembled (with the ball core 29 and valve stem 25 assembled) on the tray 14 on the top of the valve body support 15, so that the side of the valve body 27 to be welded faces the moving seat 17 and the fixed seat 2.

[0022] 2. Fit one end pipe 26 to be assembled onto the horizontal support pipe section 10 of the fixed seat side flange-shaped positioning plate 7, and fit the other end pipe 26 onto the horizontal support pipe section 10 of the moving seat side flange-shaped positioning plate 7, ensuring the concentricity of the two end pipes 26.

[0023] 3. Start the moving seat 17, which moves its components closer to the valve body 27. Start the first horizontal cylinder 3 and the second horizontal cylinder 16, which move the two end pipes 26 toward each other and insert them into the valve body 27, so that the valve seat 28 contacts the ball core 29. During the pressure increase process, observe the pressure signal transmitted by the pressure sensor. Stop the pressure increase when the set pressure is reached, in preparation for welding.

[0024] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A pneumatic tooling for a ball valve, comprising a base plate, a fixed seat, and a movable seat, wherein the upper surface of the base plate is provided with an X-direction slide rail, the fixed seat and the movable seat are located at both ends of the X-direction slide rail, the bottom surface of the movable seat is provided with an X-direction groove that mates with the X-direction slide rail, and bearing seats are respectively built into the fixed seat and the movable seat to fix a first horizontal cylinder and a second horizontal cylinder, characterized in that: The cylinder rods of the first and second horizontal cylinders are arranged opposite each other and are respectively fixed with support plates. Multiple connectors are evenly arranged on the outer circumference of the support plates. The other end of each connector on the same support plate is connected to a flange-shaped positioning plate. The inner edges of the opposite sides of the two flange-shaped positioning plates are provided with horizontal support pipe sections. The outer wall size of the horizontal support pipe section matches the inner wall size of the end pipe of the ball valve. The other port of the flange-shaped positioning plate is inserted into a detection plate. One detection plate has an image sensor at its center, and the other detection plate has a coordinate axis mark that cooperates with the image sensor at its center. Pressure detection components are arranged on the opposite end faces of the two flange-shaped positioning plates respectively.

2. The pneumatic tooling for a ball valve according to claim 1, characterized in that: The two flange-shaped positioning discs are respectively provided with concentric annular grooves around the horizontal support pipe section on their opposite end faces. The other end face of the flange-shaped positioning discs is provided with a plurality of axial through holes that communicate with the concentric annular grooves. An annular pressure bearing plate is arranged in the concentric annular groove. The pressure detection assembly includes a plurality of pressure sensors fixed in the axial through holes and connected to the annular pressure bearing plate.

3. The pneumatic tooling for a ball valve according to claim 1, wherein: The base plate is provided with a valve body support near the fixed seat. The valve body support is a telescopic seat and has a tray on top.

4. The pneumatic tooling for a ball valve according to claim 1, wherein: The connector consists of a screw, a first locking nut group and a second locking nut group located at both ends of the screw. Multiple snap-fit ​​grooves are evenly provided on the outer peripheral surface of the support plate and the outer peripheral surface of the flange-shaped positioning plate. The screw is embedded in the snap-fit ​​grooves. The first locking nut group consists of two first locking nuts that clamp the support plate, and the second locking nut group consists of two second locking nuts that clamp the flange-shaped positioning plate.

5. The pneumatic tooling for a ball valve according to claim 1, wherein: The detection plate is equipped with ring-shaped lamps at positions marked around the coordinate axes.

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