A sealing ring device applied to a large-diameter welded pipe hydrostatic testing machine

Abstract

This invention discloses a sealing ring device applied to a large-diameter welded pipe hydraulic press, relating to the field of sealing ring assembly processing technology. It includes a processing component, a base plate with a welded pipe body mounted on top of the base plate. The welded pipe body has a slot, and a sealing ring is mounted on the outer ring of the welded pipe body. It also includes a drive component mounted on top of the base plate, comprising a reduction motor located above the base plate, with a movable rod fixed to the output end of the reduction motor. The beneficial effects of this invention are that, through the drive component, the welded pipe body can be positioned and locked by the expansion member, and then the sealing ring can be fed in with the feeding member. Simultaneously, the oiling member cleans the slot before the sealing ring is installed, eliminating the need for additional equipment and reducing overall processing costs. Furthermore, the integrated design effectively avoids secondary contamination during the transfer of the welded pipe body, thus ensuring the sealing performance of the subsequent sealing ring.

Description

Technical Field

[0001] This invention relates to the field of sealing ring assembly processing technology, and in particular to a sealing ring device applied to a large-diameter welded pipe hydraulic press. Background Technology

[0002] The large-diameter welded pipe hydraulic press is a device specifically designed for hydrostatic testing of large-diameter welded steel pipes. Before the actual testing of the welded pipe, a sealing ring device is used to install the sealing element on the welded pipe to ensure the sealing of the subsequent testing environment. For large-diameter welded pipes, the annular groove seal is more suitable than the flat plate seal because it provides uniform sealing, pressure resistance, and compensation capabilities.

[0003] Existing sealing devices typically expand the sealing element and then fit it onto the welded pipe. However, due to the large size of the welded pipe, the sealing area needs to be cleaned before the sealing operation to ensure sealing performance. This not only requires two types of equipment, which takes up space and increases processing costs, but also poses a risk of secondary contamination of the sealing area with dust and impurities during the transfer process from cleaning to sealing, affecting the sealing ring's ability to seal properly. Summary of the Invention

[0004] In view of the problems existing in the sealing ring device used in large-diameter welded pipe hydraulic presses, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the sealing device in the prior art cannot perform cleaning and sealing operations simultaneously during the processing, which leads to the potential risk of secondary contamination of the sealing position with dust and impurities during the transfer from the cleaning process to the sealing process.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sealing ring device applied to a large-diameter welded pipe hydraulic press, comprising,

[0007] The processing assembly includes a base plate, a welded pipe body disposed on the top of the base plate, a slot formed on the welded pipe body, and a sealing ring disposed on the outer circumference of the welded pipe body; and...

[0008] A drive assembly, located on the top of the base plate, includes a geared motor positioned above the base plate. A movable rod is fixed to the output end of the geared motor. An expansion member is sleeved on the movable rod. A feeding member is provided on one side of the expansion member, including a multi-section electric push rod mounted on the expansion member. The output end of the multi-section electric push rod is rotatably connected to a bearing plate. A displacement plate is provided on the top of the bearing plate. An air jet is provided on the outside of the expansion member. An oil injection member is provided inside the air jet, including a pressure relief valve mounted on the air jet. A second sealing head is provided outside the pressure relief valve. An oil storage sleeve is fixed on the pressure relief valve. A placement shell is fixed to one end of the oil storage sleeve. A drain valve is fixed outside the placement shell.

[0009] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: the movable rod is provided with threads, the expansion member includes a base plate threaded to the threads, the outer ring of the base plate is rotatably connected to a movable plate, the other end of the movable plate is rotatably connected to an expansion plate, a guide plate is fixed on the expansion plate, and a guide frame is slidably connected to the guide plate.

[0010] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: a positioning groove is provided on the outer side of the expansion plate, and a first protrusion and a second protrusion are respectively fixed on the expansion plate.

[0011] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: the fixed end of the multi-section electric push rod is rotatably connected to the guide plate; the bearing plate is respectively provided with a first groove and a second groove; the top side of the bearing plate is provided with a receiving groove; a first spring is fixed on the displacement plate; the other end of the first spring is fixed in the receiving groove; and a hollow groove is provided on the displacement plate.

[0012] As a preferred embodiment of the sealing device for a large-diameter welded pipe hydraulic press according to the present invention, the air jet component includes a fixed pipe rotatably connected to the expansion plate, a telescopic frame slidably connected inside the fixed pipe, an air supply pipe fixed at one end of the fixed pipe, and a hollow ring fixed at the other end of the air supply pipe.

[0013] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: a first sealing head is installed at one end of the telescopic frame and slides in cooperation with the inner wall of the fixed pipe, and a sealing sleeve is fixed at the bottom of the fixed pipe.

[0014] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: the air inlet end of the pressure relief valve is connected to the hollow ring, a first valve stem is slidably connected to the pressure relief valve, a second sealing head is fixed to the first valve stem, one end of the second sealing head extends into the oil storage sleeve and slides in cooperation with the oil storage sleeve, a first one-way valve is fixed to the oil outlet end of the oil storage sleeve, the other end of the first one-way valve is fixed to the placement shell, a second one-way valve is fixed to the oil inlet end of the oil storage sleeve, and an oil delivery hose is fixed to the other end of the second one-way valve.

[0015] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: a first rotating rod is rotatably connected inside the housing, a float ball is fixed at one end of the first rotating rod, a second rotating rod is rotatably connected to the first rotating rod, a third rotating rod is rotatably connected to the other end of the second rotating rod, a second valve stem is rotatably connected to the drain valve, and the other end of the second valve stem is rotatably connected to the third rotating rod.

[0016] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, the movable rod is provided with a cleaning component, including a fixed plate fixed to the movable rod, a displacement frame is provided on one side of the fixed plate, an elastic cleaning head is fixed to the outer end of the displacement frame, a positioning rod is fixed on the displacement frame, one end of the positioning rod passes through the fixed plate and is slidably connected to the fixed plate, a second spring is sleeved on the positioning rod, one end of the second spring is fixed to the displacement frame, and the other end of the second spring is fixed to the fixed plate.

[0017] As a preferred embodiment of the sealing ring device applied to a large-diameter welded pipe hydraulic press according to the present invention, wherein: a first bearing frame is fixed on the top of the base plate and slides in cooperation with the welded pipe body; a second bearing frame is fixed on the top of the base plate, and the reduction motor is bolted to the second bearing frame.

[0018] The beneficial effects of this invention are as follows: by setting the drive component, the welded pipe body can be positioned and locked by the expansion component, and then the sealing ring can be fed in with the feeding component. Simultaneously with the oil injection component, the groove is cleaned by the oil injection component before the sealing ring is installed. No additional equipment is required, which reduces the overall processing cost. At the same time, the integrated design can effectively avoid secondary pollution during the transfer of the welded pipe body, thereby ensuring the sealing performance of the subsequent sealing ring, which is more in line with actual use requirements. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a sealing ring device used in a hydraulic press for large-diameter welded pipes.

[0021] Figure 2 This is a cross-sectional view of a sealing ring device used in a hydraulic press for large-diameter welded pipes.

[0022] Figure 3 This is a structural diagram of the machining components for a sealing ring device used in a large-diameter welded pipe hydraulic press.

[0023] Figure 4 This is a structural diagram of the drive assembly for the sealing ring device used in a large-diameter welded pipe hydraulic press.

[0024] Figure 5 This is a structural diagram of the movable rod and expansion component of the sealing ring device used in a large-diameter welded pipe hydraulic press.

[0025] Figure 6This is another perspective view of the expansion member and the feeding member separating in the sealing ring device used in a large-diameter welded pipe hydraulic press.

[0026] Figure 7 For sealing ring devices used in large-diameter welded pipe hydraulic presses Figure 6 Enlarged view of point A in the middle.

[0027] Figure 8 For sealing ring devices used in large-diameter welded pipe hydraulic presses Figure 6 Enlarged view of section B in the middle.

[0028] Figure 9 This is a structural diagram of the air jet and oil injection components of the sealing ring device used in a large-diameter welded pipe hydraulic press.

[0029] Figure 10 This is a structural diagram of the oil injection component of the sealing ring device used in a large-diameter welded pipe hydraulic press.

[0030] Figure 11 For sealing ring devices used in large-diameter welded pipe hydraulic presses Figure 10 Enlarged view of C.

[0031] Figure 12 Another perspective view of the cleaning component of the sealing ring device used in a hydraulic press for large-diameter welded pipes.

[0032] Figure 13 This is a structural diagram of the guide frame for the sealing ring device used in a large-diameter welded pipe hydraulic press.

[0033] In the diagram: 1. Processing component; 11. Base plate; 12. Welded pipe body; 12-1. Slot; 13. Sealing ring; 14. First support frame; 15. Second support frame; 2. Drive component; 21. Gear motor; 22. Movable rod; 22-1. Thread; 23. Expansion piece; 23-1. Base plate; 23-2. Movable plate; 23-3. Expansion plate; 23-31. Positioning slot; 23-32. First boss; 23-33. Second boss; 23-4. Guide plate; 23-5. Guide frame; 24. Feeding component; 24-1. Multi-section electric push rod; 24-2. Displacement plate; 24-21. First spring; 24-22. Empty slot; 24-3. Support plate; 24-31. First groove; 24-32. Second groove; 24-33. Storage slot; 25. Air jet component; 25-1, Fixed pipe; 25-11, Sealing sleeve; 25-12, Gas supply pipe; 25-2, Telescopic frame; 25-21, First sealing head; 25-3, Hollow ring; 26, Oil injection component; 26-1, Pressure relief valve; 26-11, First valve stem; 26-2, Second sealing head; 26-3, Oil storage sleeve; 26-31, First check valve; 26-32, Second check valve; 26-33, Oil supply hose; 26-4, Placement shell; 26-5, First rotating rod; 26-51, Float; 26-6, Second rotating rod; 26-7, Drain valve; 26-71, Second valve stem; 26-8, Third rotating rod; 27, Cleaning component; 27-1, Fixed plate; 27-2, Displacement frame; 27-21, Elastic cleaning head; 27-22, Positioning rod; 27-23, Second spring. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1

[0038] Reference Figure 1 and Figure 2This is the first embodiment of the present invention. This embodiment provides a sealing device for a large-diameter welded pipe hydraulic press. The sealing device for a large-diameter welded pipe hydraulic press includes a processing component 1 and a driving component 2. By setting the driving component 2, the sealing element can be sent in after positioning and locking, and the cleaning operation can be completed simultaneously before the sealing operation. No additional equipment is required, reducing the overall processing cost. At the same time, the integrated design can effectively avoid secondary pollution during the transportation process, thereby ensuring the sealing performance of the subsequent sealing ring.

[0039] Specifically, the processing component 1 includes a base plate 11, a welded pipe body 12 is provided on the top of the base plate 11, a slot 12-1 is provided on the welded pipe body 12, and a sealing ring 13 is provided on the outer ring of the welded pipe body 12.

[0040] The welded pipe body 12 is a component that is used in conjunction with the hydraulic press test. In order to ensure the sealing between the welded pipe body 12 and the hydraulic press interface, the sealing ring 13 will be installed in the slot 12-1 to complete the annular sealing operation. The working principle of this part is existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0041] Specifically, the drive assembly 2 is located on the top of the base plate 11 and includes a geared motor 21 located above the base plate 11. A movable rod 22 is fixed to the output end of the geared motor 21. An expansion member 23 is sleeved on the movable rod 22. A feeding member 24 is provided on one side of the expansion member 23, including a multi-section electric push rod 24-1 installed on the expansion member 23. A bearing plate 24-3 is rotatably connected to the output end of the multi-section electric push rod 24-1. A displacement plate 24-2 is provided on the top of the bearing plate 24-3. An air jet member 25 is provided on the outside of the expansion member 23. An oil injection member 26 is provided inside the air jet member 25, including a pressure relief valve 26-1 installed on the air jet member 25. A second sealing head 26-2 is provided outside the pressure relief valve 26-1. An oil storage sleeve 26-3 is fixed on the pressure relief valve 26-1. A placement shell 26-4 is fixed to one end of the oil storage sleeve 26-3. A drain valve 26-7 is fixed outside the placement shell 26-4.

[0042] The inner ring of the sealing ring 13 is fitted onto the displacement plate 24-2.

[0043] By setting the expansion member 23, the welded pipe body 12 can be locked under the drive of the reduction motor 21 and in conjunction with the movable rod 22, so as to ensure the stability of the position of the welded pipe body 12 during the sealing process.

[0044] By setting the feeding component 24, when the multi-section electric push rod 24-1 extends to work, the displacement plate 24-2 moves the sealing ring 13 to gradually move, thus completing the feeding operation.

[0045] By using the jetting component 25 and the oiling component 26, the internal air can be continuously compressed during the feeding process of the feeding component 24. With the cooperation of the oiling component 26, the slot 12-1 can be pre-sprayed and cleaned. Lubricant can also be sprayed intermittently according to the actual sealing ring requirements, which can reduce the friction between the sealing ring 13 and the slot 12-1 during installation, avoid twisting or damage, and enhance the initial sealing effect.

[0046] Example 2

[0047] Reference Figures 2 to 13 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0048] Specifically, the movable rod 22 has a thread 22-1, and the expansion member 23 includes a base plate 23-1 threadedly connected to the thread 22-1. The outer ring of the base plate 23-1 is rotatably connected to a movable plate 23-2. The other end of the movable plate 23-2 is rotatably connected to an expansion plate 23-3. A guide plate 23-4 is fixed on the expansion plate 23-3, and a guide frame 23-5 is slidably connected to the guide plate 23-4.

[0049] Through the threaded engagement between the screw thread 22-1 and the base plate 23-1, the position of the base plate 23-1 will change as the moving rod 22 is continuously rotated by the geared motor 21.

[0050] Guide bracket 23-5 is shaped as shown in the attached diagram of the instruction manual. Figure 13 As shown, it is fixed to the top of the base plate 11 by bolts and can guide the movement of multiple guide plates 23-4.

[0051] When the base plate 23-1 is linearly displaced, the movable plate 23-2 will cause multiple expansion plates 23-3 to expand outward or contract inward simultaneously.

[0052] The outer side of the expansion plate 23-3 is provided with a positioning groove 23-31, and the first protrusion 23-32 and the second protrusion 23-33 are fixed on the expansion plate 23-3 respectively.

[0053] The fixed end of the multi-section electric push rod 24-1 is rotatably connected to the guide plate 23-4. The bearing plate 24-3 has a first groove 24-31 and a second groove 24-32 respectively. The top side of the bearing plate 24-3 has a storage groove 24-33. The displacement plate 24-2 has a first spring 24-21 fixed on it. The other end of the first spring 24-21 is fixed in the storage groove 24-33. The displacement plate 24-2 has a hollow groove 24-22.

[0054] The positioning groove 23-31 has a T-shaped cross-section, and the bottom of the bearing plate 24-3 is fixed with a T-shaped block that slides with the positioning groove 23-31. This design can effectively improve the displacement stability of the bearing plate 24-3.

[0055] The first protrusion 23-32 cooperates with the first groove 24-31, and the height of the first protrusion 23-32 is greater than the vertical inner diameter of the first groove 24-31. That is, when the bearing plate 24-3 gradually moves and the first protrusion 23-32 is placed into the first groove 24-31, the first protrusion 23-32 will actively push the displacement plate 24-2 out a certain distance.

[0056] The second protrusion 23-33 mates with the second groove 24-32 and the empty slot 24-22, and the height of the second protrusion 23-33 is greater than the sum of the vertical inner diameters of the second groove 24-32 and the empty slot 24-22. That is, when the displacement plate 24-2 and the bearing plate 24-3 gradually move and the second protrusion 23-33 is placed into the second groove 24-32 and the empty slot 24-22, the second protrusion 23-33 will actively push out the sealing ring 13 fitted on the displacement plate 24-2 a certain distance.

[0057] The jet component 25 includes a fixed pipe 25-1 rotatably connected to the expansion plate 23-3, a telescopic frame 25-2 slidably connected inside the fixed pipe 25-1, an air supply pipe 25-12 fixed at one end of the fixed pipe 25-1, and a hollow ring 25-3 fixed at the other end of the air supply pipe 25-12.

[0058] The telescopic frame 25-2 has a first sealing head 25-21 installed at one end, which slides in cooperation with the inner wall of the fixed pipe 25-1. The bottom of the fixed pipe 25-1 is fixed with a sealing sleeve 25-11.

[0059] The sealing sleeve 25-11 is a square rubber corrugated tube used to fill the operating space of the telescopic frame 25-2, preventing gas from leaking out at will. At the same time, it can be folded at a high degree to meet the operating requirements of the telescopic frame 25-2.

[0060] The air inlet of the pressure relief valve 26-1 is connected to the hollow ring 25-3. A first valve stem 26-11 is slidably connected to the pressure relief valve 26-1. A second sealing head 26-2 is fixed to the first valve stem 26-11. One end of the second sealing head 26-2 extends into the oil storage sleeve 26-3 and slides in cooperation with the oil storage sleeve 26-3. A first check valve 26-31 is fixed to the oil outlet of the oil storage sleeve 26-3. The other end of the first check valve 26-31 is fixed to the housing 26-4. A second check valve 26-32 is fixed to the oil inlet of the oil storage sleeve 26-3. An oil delivery hose 26-33 is fixed to the other end of the second check valve 26-32.

[0061] A first rotating rod 26-5 is rotatably connected inside the housing 26-4. A float 26-51 is fixed to one end of the first rotating rod 26-5. A second rotating rod 26-6 is rotatably connected to the first rotating rod 26-5. A third rotating rod 26-8 is rotatably connected to the other end of the second rotating rod 26-6. A second valve stem 26-71 is rotatably connected to the drain valve 26-7. The other end of the second valve stem 26-71 is rotatably connected to the third rotating rod 26-8.

[0062] The end of the oil delivery hose 26-33 away from the second check valve 26-32 is connected to an external lubricating oil source. When the second sealing head 26-2 completes its reset in one operation, the negative pressure in the oil storage sleeve 26-3 is generated, which, in turn, cooperates with the second check valve 26-32 to automatically replenish the lubricating oil into the oil storage sleeve 26-3.

[0063] When the pressure relief valve 26-1 is in pressure relief operation, the first valve stem 26-11 will automatically move outward to discharge the hollow ring 25-3 by high-pressure gas, which will then drive the second sealing head 26-2 to move a certain distance, squeezing out the lubricating oil in the oil storage sleeve 26-3 and placing it into the placement shell 26-4 through the first one-way valve 26-31.

[0064] As lubricating oil gradually accumulates inside the housing 26-4, it provides buoyancy to the float 26-51, changing the tilt angle of the first rotating rod 26-5. Under the linkage of the second rotating rod 26-6, the third rotating rod 26-8 and the second valve rod 26-71 rotate, opening the drain valve 26-7. The oil inside the housing 26-4 is then discharged through the drain valve 26-7. As the oil is discharged, the float 26-51 returns to its original position due to gravity, and the drain valve 26-7 automatically closes.

[0065] The top of the base plate 11 is fixed with a first support frame 14, which slides in cooperation with the welded pipe body 12. The top of the base plate 11 is fixed with a second support frame 15, and the reduction motor 21 is bolted to the second support frame 15.

[0066] In practical applications, the second sealing head 26-2, oil storage sleeve 26-3, placement shell 26-4, first rotating rod 26-5, second rotating rod 26-6, drain valve 26-7, and third rotating rod 26-8 rely on buoyancy and gravity to cooperate in their operation. Therefore, the above structures are only distributed in the upper part of the hollow ring 25-3, forming point-to-point oil spraying. With repeated air blowing by the pressure relief valve 26-1, after cleaning, the oil can be evenly sprayed and coated into the slot 12-1.

[0067] In use, the geared motor 21 can be controlled to rotate forward, so that the multiple expansion plates 23-3 gradually move inward, and the position of the displacement plate 24-2 is adjusted. Then, the sealing ring 13 is put on the displacement plate 24-2. Then, the geared motor 21 is controlled to rotate in reverse, and the multiple expansion plates 23-3 move outward to evenly expand the sealing ring 13.

[0068] The welded pipe body 12 is sent into the first support frame 14 and the reduction motor 21 is controlled to rotate forward. The expansion plate 23-3 locks the welded pipe body 12 to ensure the stability of the position of the welded pipe body 12. At this time, the hollow ring 25-3 is located outside the slot 12-1.

[0069] The multi-section electric push rod 24-1 is slowly extended to drive the bearing plate 24-3 and the displacement plate 24-2 to move on the expansion plate 23-3 until the first protrusion 23-32 contacts the displacement plate 24-2 and presses the displacement plate 24-2 to move a certain distance. The first spring 24-21 is stretched. When the second protrusion 23-33 contacts the sealing ring 13, it will press the sealing ring 13 to move a certain distance. As the displacement plate 24-2 moves further, the suspended space of the inner ring of the sealing ring 13 gradually increases. Finally, under the action of its own contraction elasticity, it quickly snaps into the slot 12-1.

[0070] During the above process, as the bearing plate 24-3 shifts, the telescopic frame 25-2 and the first sealing head 25-21 shift synchronously, and the sealing sleeve 25-11 is folded to compress the gas in the fixed pipe 25-1, the gas supply pipe 25-12, and the hollow ring 25-3. When the gas pressure reaches the threshold of the pressure relief valve 26-1, the pressure relief valve 26-1 automatically opens, the first valve stem 26-11 shifts, and drives the second sealing head 26-2 to move, squeezing the lubricating oil in the oil storage sleeve 26-3 into the placement shell 26-4 through the first one-way valve 26-31 until the pressure relief valve 26-1 completes the venting and pressure relief. The first valve stem 26-11 drives the second sealing head 26-2 to automatically reset, and the lubricating oil is automatically replenished into the oil storage sleeve 26-3 through the oil supply hose 26-33 and the second one-way valve 26-32.

[0071] As the multi-section electric push rod 24-1 gradually extends, the pressure relief valve 26-1 will repeat the above pressure relief process, which can perform multiple uniform spray cleaning of the slot 12-1. At the same time, the oil in the oil storage sleeve 26-3 will also be continuously injected into the placement shell 26-4.

[0072] As the oil in the housing 26-4 gradually fills and the supporting float 26-51 floats to a certain height, the second valve stem 26-71 rotates open, and the oil in the housing 26-4 is naturally discharged through the drain valve 26-7 and placed in the slot 12-1. At the same time, the pressure relief valve 26-1 is in the venting state, which can blow away the oil. This cycle, combined with the effect of gravity, can cover the slot 12-1 with lubricating oil to reduce friction during installation, prevent the sealing ring 13 from twisting or being damaged, and enhance the initial sealing effect.

[0073] Example 3

[0074] Reference Figures 4 to 13 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0075] Specifically, the movable rod 22 is provided with a cleaning component 27, including a fixed plate 27-1 fixed to the movable rod 22, a displacement frame 27-2 on one side of the fixed plate 27-1, an elastic cleaning head 27-21 fixed to the outer end of the displacement frame 27-2, a positioning rod 27-22 fixed on the displacement frame 27-2, one end of the positioning rod 27-22 passing through the fixed plate 27-1 and slidably connected to the fixed plate 27-1, and a second spring 27-23 sleeved on the positioning rod 27-22, one end of the second spring 27-23 fixed to the displacement frame 27-2, and the other end of the second spring 27-23 fixed to the fixed plate 27-1.

[0076] During the process of the welded pipe body 12 being pushed by the professional conveying equipment, it will press against the displacement frame 27-2, and the elastic cleaning head 27-21 will contact the end face of the welded pipe body 12. The second spring 27-23 will be compressed. When the reduction motor 21 drives the movable rod 22 to rotate, and the expansion plate 23-3 clamps the welded pipe body 12, the fixed plate 27-1 will drive the displacement frame 27-2 to rotate synchronously. In conjunction with the elastic cleaning head 27-21, the end face of the welded pipe body 12 will be cleaned. This is beneficial for the subsequent testing of the welded pipe body 12 with the hydraulic press. When there is a need for a flat sealing ring, this design will also achieve the purpose of auxiliary cleaning.

[0077] The expansion plate 23-3 has a fixed positioning block inside, as shown in the attached diagram of the instruction manual. Figure 5 and Figure 6 As shown, it is used to position one end of the welded pipe body 12 to ensure the position of the welded pipe body 12.

[0078] The flexible cleaning heads 27-21 are angled on the sides, as shown in the attached diagram in the instruction manual. Figure 12 As shown, with this design, when the flexible cleaning head 27-21 rotates and contacts the positioning block on the expansion plate 23-3, the flexible cleaning head 27-21 is naturally compressed and displaced a certain distance, thus avoiding the flexible cleaning head 27-21 from colliding and obstructing the positioning block.

[0079] The expansion plate 23-3 consists of a fixed base and an assembly base, as shown in the attached diagram of the instruction manual. Figure 6 As shown, the mounting base is bolted to the fixed base, and both the fixed base and the inner side of the mounting base are arc-shaped to cooperate with the welded pipe body 12, increasing the contact area and ensuring positioning stability.

[0080] The aforementioned detachable design allows for flexible installation of mounting bases of corresponding lengths according to different positions of the slots 12-1 on different welded pipe bodies 12, while the installation positions of the jetting component 25 and the oiling component 26 must also be adjusted accordingly.

[0081] One side of the mounting base is inclined. When the sealing ring 13 moves, it cooperates with the first protrusion 23-32 and the second protrusion 23-33 to vacate part of the sealing ring 13, which is conducive to fitting the sealing ring 13 onto the slot 12-1.

[0082] The telescopic frame 25-2 includes a storage sleeve rotatably connected to the expansion plate 23-3 and an extension block slidably connected to the storage sleeve. One end of the extension block is rotatably connected to the first sealing head 25-21. This design allows the first sealing head 25-21 to remain in sealed contact with the fixed tube 25-1 even when the feeding component 24 moves to the tilted position of the mounting seat on the expansion plate 23-3.

[0083] The first protrusion 23-32 includes a base fixed to the expansion plate 23-3, and a ball bearing with clearance fit on the base, as shown in the attached diagram of the instruction manual. Figure 8 As shown, this design reduces contact friction by having the ball contact the displacement plate 24-2, which helps to push the displacement plate 24-2 out a certain distance.

[0084] The second protrusion 23-33 is inclined on one side, as shown in the attached diagram of the instruction manual. Figure 8 As shown, with this design, as the sealing ring 13 gradually approaches, it will gradually expand outward. Since the sealing ring 13 is at an angle at this time, under the combined force of gravity and the elasticity of the sealing ring 13 itself, the sealing ring 13 will tighten inward and fit onto the slot 12-1. At the same time, the second protrusion 23-33 itself is a low-friction polytetrafluoroethylene block, which facilitates the separation of the sealing ring 13 from the second protrusion 23-33.

[0085] In practical applications, a one-way air supply valve is fixed on the hollow ring 25-3, and a filter screen is installed on the one-way air supply valve to introduce outside air into the hollow ring 25-3 when the multi-section electric push rod 24-1 retracts and resets.

[0086] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sealing ring device for use in a large-diameter welded pipe hydraulic press, characterized in that: include, The processing component (1) includes a base plate (11), on the top of which a welded pipe body (12) is provided, a slot (12-1) is provided on the welded pipe body (12), and a sealing ring (13) is provided on the outer ring of the welded pipe body (12); and, The drive assembly (2) is located on the top of the base plate (11) and includes a geared motor (21) located above the base plate (11). A movable rod (22) is fixed to the output end of the geared motor (21). An expansion member (23) is sleeved on the movable rod (22). A feeding member (24) is provided on one side of the expansion member (23), including a multi-section electric push rod (24-1) installed on the expansion member (23). The output end of the multi-section electric push rod (24-1) is rotatably connected to a bearing plate (24-3). The top of the bearing plate (24-3) is... A displacement plate (24-2) is provided, and an air jet (25) is provided on the outside of the expansion member (23). An oil injection member (26) is provided inside the air jet (25), including a pressure relief valve (26-1) installed on the air jet (25). A second sealing head (26-2) is provided outside the pressure relief valve (26-1). An oil storage sleeve (26-3) is fixed on the pressure relief valve (26-1). A placement shell (26-4) is fixed at one end of the oil storage sleeve (26-3). A drain valve (26-7) is fixed outside the placement shell (26-4). The movable rod (22) is provided with threads (22-1), and the expansion member (23) includes a base plate (23-1) threaded to the threads (22-1). The outer ring of the base plate (23-1) is rotatably connected to a movable plate (23-2). The other end of the movable plate (23-2) is rotatably connected to an expansion plate (23-3). A guide plate (23-4) is fixed on the expansion plate (23-3), and a guide frame (23-5) is slidably connected on the guide plate (23-4). The expansion plate (23-3) has a positioning groove (23-31) on its outer side, and a first protrusion (23-32) and a second protrusion (23-33) are fixed on the expansion plate (23-3). The fixed end of the multi-section electric push rod (24-1) is rotatably connected to the guide plate (23-4). The bearing plate (24-3) is provided with a first groove (24-31) and a second groove (24-32) respectively. The top side of the bearing plate (24-3) is provided with a storage groove (24-33). The displacement plate (24-2) is fixed with a first spring (24-21). The other end of the first spring (24-21) is fixed in the storage groove (24-33). The displacement plate (24-2) is provided with a hollow groove (24-22).

2. The sealing ring device for a large-diameter welded pipe hydraulic press as described in claim 1, characterized in that: The jet component (25) includes a fixed pipe (25-1) rotatably connected to the expansion plate (23-3), a telescopic frame (25-2) slidably connected inside the fixed pipe (25-1), an air supply pipe (25-12) fixed at one end of the fixed pipe (25-1), and a hollow ring (25-3) fixed at the other end of the air supply pipe (25-12).

3. The sealing ring device for a large-diameter welded pipe hydraulic press as described in claim 2, characterized in that: The telescopic frame (25-2) is equipped with a first sealing head (25-21) at one end, which slides in cooperation with the inner wall of the fixed tube (25-1). A sealing sleeve (25-11) is fixed at the bottom of the fixed tube (25-1).

4. The sealing ring device for a large-diameter welded pipe hydraulic press as described in claim 3, characterized in that: The pressure relief valve (26-1) has its air inlet end connected to the hollow ring (25-3). A first valve stem (26-11) is slidably connected to the pressure relief valve (26-1). A second sealing head (26-2) is fixed to the first valve stem (26-11). One end of the second sealing head (26-2) extends into the oil storage sleeve (26-3) and slides in cooperation with the oil storage sleeve (26-3). A first one-way valve (26-31) is fixed to the oil outlet end of the oil storage sleeve (26-3). The other end of the first one-way valve (26-31) is fixed to the placement shell (26-4). A second one-way valve (26-32) is fixed to the oil inlet end of the oil storage sleeve (26-3). An oil delivery hose (26-33) is fixed to the other end of the second one-way valve (26-32).

5. The sealing ring device for a large-diameter welded pipe hydraulic press as described in claim 4, characterized in that: A first rotating rod (26-5) is rotatably connected inside the housing (26-4). A float (26-51) is fixed to one end of the first rotating rod (26-5). A second rotating rod (26-6) is rotatably connected to the first rotating rod (26-5). A third rotating rod (26-8) is rotatably connected to the other end of the second rotating rod (26-6). A second valve stem (26-71) is rotatably connected to the drain valve (26-7). The other end of the second valve stem (26-71) is rotatably connected to the third rotating rod (26-8).

6. The sealing ring device for a large-diameter welded pipe hydraulic press as described in claim 1, characterized in that: The movable rod (22) is provided with a cleaning component (27), including a fixed plate (27-1) fixed on the movable rod (22). A displacement frame (27-2) is provided on one side of the fixed plate (27-1). An elastic cleaning head (27-21) is fixed at the outer end of the displacement frame (27-2). A positioning rod (27-22) is fixed on the displacement frame (27-2). One end of the positioning rod (27-22) passes through the fixed plate (27-1) and is slidably connected to the fixed plate (27-1). A second spring (27-23) is sleeved on the positioning rod (27-22). One end of the second spring (27-23) is fixed on the displacement frame (27-2), and the other end of the second spring (27-23) is fixed on the fixed plate (27-1).

7. The sealing ring device for a large-diameter welded pipe hydraulic press as described in claim 1, characterized in that: The bottom plate (11) is fixed with a first support frame (14) and slides with the welded pipe body (12). The bottom plate (11) is fixed with a second support frame (15) and the geared motor (21) is bolted to the second support frame (15).

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