Sealing ring device applied to large-diameter welded pipe hydraulic press

Abstract

The invention discloses a sealing ring device applied to a large-diameter welded pipe hydraulic press, and relates to the technical field of sealing ring combination machining, the sealing ring device comprises a machining assembly, the machining assembly comprises a bottom plate, a welded pipe body is arranged at the top of the bottom plate, a clamping groove is formed in the welded pipe body, and a sealing ring is arranged on the outer ring of the welded pipe body; and the driving assembly is arranged at the top of the bottom plate and comprises a gear motor located above the bottom plate, and a movable rod is fixed to the output end of the gear motor. The device has the beneficial effects that through the arrangement of the driving assembly, after a welded pipe body is positioned and locked through the expanding and supporting piece, a sealing ring can be fed in through cooperation with the feeding piece, the oil injection piece is synchronously matched, before the sealing ring is clamped, the clamping groove is cleaned through the oil injection piece, extra equipment does not need to be arranged, and the overall machining cost is reduced; meanwhile, the integrated design can effectively avoid secondary pollution in the transfer process of the welded pipe body, and then the sealing performance of a follow-up sealing ring is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing ring combination processing, in particular to a sealing ring device applied to a large-diameter welded pipe hydrostatic testing machine. BACKGROUND

[0002] The large-diameter welded pipe hydrostatic testing machine is a device specially used for hydrostatic testing of large-diameter welded steel pipes. Before actual testing of the welded pipe, a sealing ring device is used to install a sealing element on the welded pipe to ensure the sealing property of the subsequent testing environment. For large-diameter welded pipes, the annular groove type sealing is more suitable than the flat plate type sealing, and has more uniform sealing, stronger pressure resistance and compensation capacity.

[0003] The sealing ring device in the prior art generally expands the sealing element and then sets the sealing element on the welded pipe. However, due to the large size of the welded pipe, the sealing position needs to be cleaned to ensure the sealing property, and then the sealing ring operation is performed. This not only needs to configure two devices to occupy space and increase the processing cost, but also has the hidden danger of secondary contamination of dust and impurities in the sealing position during the transfer process from the cleaning process to the sealing process, which affects the sealing of the sealing ring. SUMMARY

[0004] In view of the above problems existing in the prior art sealing ring device applied to the large-diameter welded pipe hydrostatic testing machine, the present application is proposed.

[0005] Therefore, the problem to be solved by the present application is that the sealing ring device in the prior art cannot simultaneously perform cleaning and sealing operations during the processing, resulting in the hidden danger of secondary contamination of dust and impurities in the sealing position during the transfer process from the cleaning process to the sealing process.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a sealing ring device applied to a large-diameter welded pipe hydrostatic testing machine, comprising, a processing assembly comprising a bottom plate, a welded pipe body provided on the top of the bottom plate, a clamping groove formed in the welded pipe body, and a sealing ring provided on the outer circle of the welded pipe body; and a driving assembly provided on the top of the bottom plate and comprising a reduction motor located above the bottom plate, an active rod fixed to the output end of the reduction motor, an expansion support member installed on the active rod, a feeding member provided on one side of the expansion support member, a plurality of electric push rods installed on the expansion support member, a bearing plate rotatably connected to the output end of the plurality of electric push rods, a displacement plate provided on the top of the bearing plate, a gas injection member provided on the outer side of the expansion support member, an oil injection member provided in the gas injection member, a pressure relief valve installed on the gas injection member, a second sealing head provided outside the pressure relief valve, an oil storage sleeve fixed to the pressure relief valve, a storage shell fixed to one end of the oil storage sleeve, and a liquid discharge valve fixed to the outside of the storage shell.

[0007] As a preferred solution of the sealing ring device applied to the large diameter welded pipe hydraulic press described in the present invention, wherein: the movable rod is provided with a threaded thread, the expansion member includes a base plate threadedly connected to the threaded thread, 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.

[0008] As a preferred solution of the sealing ring device applied to the large diameter welded pipe hydraulic press of the present invention, a positioning groove is provided on the outer side of the expansion plate, and a first boss and a second boss are respectively fixed on the expansion plate.

[0009] As a preferred solution of the sealing ring device applied to the large-diameter welded pipe hydraulic press described in the present invention, wherein: the fixed end of the multi-section electric push rod is rotatably connected to the guide plate, the first groove and the second groove are respectively penetrated on the bearing plate, and a receiving groove is provided on the top side of the bearing plate. A first spring is fixed on the displacement plate, and the other end of the first spring is fixed in the receiving groove, and an empty groove is provided on the displacement plate.

[0010] As a preferred solution of the sealing ring device applied to the large-diameter welded pipe hydraulic press described in the present invention, the jet component includes a fixed tube rotatably connected to the expansion plate, a telescopic frame is slidably connected inside the fixed tube, an air supply pipe is fixed to one end of the fixed tube, and a hollow ring is fixed to the other end of the air supply pipe.

[0011] As a preferred solution of the sealing ring device applied to the large diameter welded pipe hydraulic press described in the present invention, a first sealing head is installed at one end of the telescopic frame and slides with the inner wall of the fixed pipe, and a sealing sleeve is fixed to the bottom of the fixed pipe.

[0012] As a preferred solution of the sealing ring device applied to the large diameter welded pipe hydraulic press described in the present invention, wherein: the air inlet end of the pressure relief valve is connected to the hollow ring, the first valve stem is slidably connected to the pressure relief valve, the second sealing head is fixed on the first valve stem, one end of the second sealing head extends into the oil storage sleeve and slides with the oil storage sleeve, the oil outlet end of the oil storage sleeve is fixed with a first one-way valve, the other end of the first one-way valve is fixed on the placement shell, the oil inlet end of the oil storage sleeve is fixed with a second one-way valve, and the other end of the second one-way valve is fixed with an oil delivery hose.

[0013] As a preferred solution of the sealing ring device applied to the large diameter welded pipe hydraulic press described in the present invention, wherein: a first rotating rod is rotatably connected in the placement shell, a float is fixed to one end of the first rotating rod, a second rotating rod is rotatably connected to the first rotating rod, the other end of the second rotating rod is rotatably connected to the third 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.

[0014] As a preferred solution of the sealing ring device applied to the large-diameter welded pipe hydraulic press described in the present invention, wherein: a cleaning part is provided on the movable rod, including a fixed disk fixed on the movable rod, a displacement frame is provided on one side of the fixed disk, 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 disk and is slidably connected to the fixed disk, 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 disk.

[0015] As a preferred solution of the sealing ring device applied to the large-diameter welded pipe hydraulic press described in the present invention, a first supporting frame is fixed on the top of the base plate and slides with the welded pipe body, a second supporting frame is fixed on the top of the base plate, and the reduction motor is bolted to the second supporting frame.

[0016] The beneficial effects of the present invention are as follows: through the setting of the driving component, the expansion member can position and lock the welded pipe body, and then cooperate with the feeding member to feed the sealing ring, and synchronously cooperate with the oil injection member. Before the sealing ring is clamped, the oil injection member cleans the clamping groove, without the need for additional equipment, reducing the overall processing cost. At the same time, the integrated design can effectively avoid secondary pollution during the transportation process of the welded pipe body, thereby ensuring the subsequent sealing of the sealing ring, which is more in line with actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a structural diagram of the sealing ring device used in large-diameter welded pipe hydraulic presses.

[0019] Figure 2 A cross-sectional view of a sealing ring device used in a large-diameter welded pipe hydraulic press.

[0020] Figure 3 This is a structural diagram of the processing components of the sealing device used in large-diameter welded pipe hydraulic presses.

[0021] Figure 4 This is a structural diagram of the drive assembly of the sealing device used in large-diameter welded pipe hydraulic presses.

[0022] Figure 5 This is a structural diagram of the movable rod and expansion member of the sealing device used in a large-diameter welded pipe hydraulic press.

[0023] Figure 6This is another perspective view of the separation of the expansion piece and the feeding piece of the sealing ring device used in the large-diameter welded pipe hydraulic press.

[0024] Figure 7 For sealing ring device used in large diameter welded pipe hydraulic press Figure 6 Enlarged view of point A in the middle.

[0025] Figure 8 For sealing ring device used in large diameter welded pipe hydraulic press Figure 6 Enlarged view of point B in the middle.

[0026] Figure 9 This is a structural diagram of the air injection and oil injection parts of the sealing device used in a large-diameter welded pipe hydraulic press.

[0027] Figure 10 This is a structural diagram of the oil injection parts of the sealing device used in large-diameter welded pipe hydraulic presses.

[0028] Figure 11 For sealing ring device used in large diameter welded pipe hydraulic press Figure 10 Middle C enlarged image.

[0029] Figure 12 Another perspective view of the cleaning parts of the sealing device used in large diameter welded pipe hydraulic presses.

[0030] Figure 13 This is a structural diagram of the guide frame of the sealing device used in the large-diameter welded pipe hydraulic press.

[0031] In the figure: 1. Processing assembly; 11. Bottom plate; 12. Welding pipe body; 12-1. Clamping groove; 13. Sealing ring; 14. First carrier; 15. Second carrier; 2. Driving assembly; 21. Reducer motor; 22. Movable rod; 22-1. Screw thread; 23. Expanding member; 23-1. Base plate; 23-2. Movable plate; 23-3. Expanding plate; 23-31. Positioning groove; 23-32. First protrusion; 23-33. Second protrusion; 23-4. Guide plate; 23-5. Guide frame; 24. Feeding member; 24-1. Multi-section electric push rod; 24-2. Displacement plate; 24-21. First spring; 24-22. Empty groove; 24-3. Carrying plate; 24-31. First groove; 24-32. Second groove; 24-33. Receiving groove; 25. Jet member; 25-1, fixed tube; 25-11, sealing sleeve; 25-12, air pipe; 25-2, telescopic frame; 25-21, first sealing head; 25-3, hollow ring; 26, oil filling part; 26-1, pressure relief valve; 26-11, first valve stem; 26-2, second sealing head; 26-3, oil storage sleeve; 26-31, first one-way valve; 26-32, second one-way valve; 26-33, oil 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 part; 27-1, fixed plate; 27-2, displacement frame; 27-21, elastic cleaning head; 27-22, positioning rod; 27-23, second spring. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" 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 various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0035] Example 1 Reference Figure 1 and Figure 2, which is the first embodiment of the present invention, provides a sealing device applied to a large-diameter welded pipe hydraulic press. The sealing device applied to a large-diameter welded pipe hydraulic press includes a processing component 1 and a driving component 2. Through the setting of the driving component 2, the sealing component can be sent in after positioning and locking, and the cleaning operation can be completed synchronously 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 of the subsequent sealing ring.

[0036] Specifically, the processing assembly 1 includes a base plate 11 , a welding pipe body 12 is provided on the top of the base plate 11 , a clamping groove 12 - 1 is provided on the welding pipe body 12 , and a sealing ring 13 is provided on the outer ring of the welding pipe body 12 .

[0037] The welded pipe body 12 is a component that cooperates 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 all existing technology, and those skilled in the art can clearly understand it, so it will not be elaborated here.

[0038] Specifically, the drive assembly 2 is arranged on the top of the base plate 11, and includes a reduction motor 21 located above the base plate 11. A movable rod 22 is fixed to the output end of the reduction motor 21, and an expansion member 23 is mounted 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, and the output end of the multi-section electric push rod 24-1 is rotatably connected to a supporting plate 24-3, and a displacement plate 24-2 is provided on the top of the supporting plate 24-3. A jet member 25 is provided on the outside of the expansion member 23, and an oil injection member 26 is provided in the jet member 25, including a pressure relief valve 26-1 installed on the jet member 25, and 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, and 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.

[0039] The inner ring of the sealing ring 13 is sleeved on the displacement plate 24 - 2 .

[0040] By providing the expansion member 23 , the welded pipe body 12 can be locked in cooperation with the movable rod 22 under the drive of the reduction motor 21 , thereby ensuring the position stability of the welded pipe body 12 during the sealing process.

[0041] By setting the feeding member 24, when the multi-section electric push rod 24-1 is extended to work, the displacement plate 24-2 is actuated to drive the sealing ring 13 to gradually move, thereby completing the feeding operation.

[0042] By setting the air-jet part 25 and the oil-injection part 26, the internal air can be continuously compressed during the feeding process of the feeding part 24, and the card slot 12-1 can be pre-sprayed and cleaned with the cooperation of the oil-injection part 26. The 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 card slot 12-1 during installation, avoid distortion or damage, and enhance the initial sealing effect.

[0043] Example 2 Reference Figures 2 to 13 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0044] Specifically, a screw thread 22-1 is provided on the movable rod 22, and the expansion member 23 includes a base plate 23-1 threadedly connected to the screw thread 22-1, the outer ring of the base plate 23-1 is rotatably connected to a movable plate 23-2, and 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.

[0045] Through the threaded engagement of the screw thread 22 - 1 and the base plate 23 - 1 , when the reduction motor 21 drives the movable rod 22 to rotate continuously, the position of the base plate 23 - 1 will change.

[0046] The shape of the guide frame 23-5 is as shown in the accompanying drawings of the specification. 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.

[0047] When the base plate 23 - 1 moves linearly, the movable plate 23 - 2 cooperates with the plurality of expansion plates 23 - 3 to simultaneously expand and move outward or tighten and move inward.

[0048] A positioning groove 23 - 31 is formed on the outer side of the expansion plate 23 - 3 , and a first convex seat 23 - 32 and a second convex seat 23 - 33 are fixed on the expansion plate 23 - 3 .

[0049] The fixed end of the multi-section electric push rod 24-1 is rotatably connected to the guide plate 23-4. The first groove 24-31 and the second groove 24-32 are respectively penetrated on the supporting plate 24-3. A receiving groove 24-33 is provided on the top side of the supporting plate 24-3. A first spring 24-21 is fixed on the displacement plate 24-2. The other end of the first spring 24-21 is fixed in the receiving groove 24-33. An empty groove 24-22 is provided on the displacement plate 24-2.

[0050] The cross-section of the positioning groove 23-31 is T-shaped, and a T-shaped block that slides with the pre-positioning groove 23-31 is fixed at the bottom of the supporting plate 24-3. This design can effectively improve the displacement stability of the supporting plate 24-3.

[0051] The first boss 23-32 cooperates with the first groove 24-31, and the height of the first boss 23-32 is greater than the vertical inner diameter of the first groove 24-31, that is, when the supporting plate 24-3 gradually shifts and the first boss 23-32 is placed in the first groove 24-31, the first boss 23-32 will actively push the displacement plate 24-2 out a distance.

[0052] The second boss 23-33 cooperates with the second groove 24-32 and the empty groove 24-22, and the height of the second boss 23-33 is greater than the sum of the vertical inner diameters of the second groove 24-32 and the empty groove 24-22, that is, when the displacement plate 24-2 and the supporting plate 24-3 gradually shift and the second boss 23-33 is placed in the second groove 24-32 and the empty groove 24-22, the second boss 23-33 will actively push the sealing ring 13 of the displacement plate 24-2 out a distance.

[0053] The jet component 25 includes a fixed tube 25-1 rotatably connected to the expansion plate 23-3, a telescopic frame 25-2 is slidably connected inside the fixed tube 25-1, an air delivery pipe 25-12 is fixed to one end of the fixed tube 25-1, and a hollow ring 25-3 is fixed to the other end of the air delivery pipe 25-12.

[0054] A first sealing head 25-21 is installed at one end of the telescopic frame 25-2 and is slidably matched with the inner wall of the fixed tube 25-1. A sealing sleeve 25-11 is fixed to the bottom of the fixed tube 25-1.

[0055] The sealing sleeve 25-11 is a square rubber bellows, which is used to fill the movement space of the telescopic frame 25-2 to prevent gas from leaking out at will. At the same time, it can be highly folded to meet the movement requirements of the telescopic frame 25-2.

[0056] The air inlet end of the pressure relief valve 26-1 is connected to the hollow ring 25-3, and the first valve stem 26-11 is slidably connected to the pressure relief valve 26-1. The second sealing head 26-2 is fixed on 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 with the oil storage sleeve 26-3. The oil outlet end of the oil storage sleeve 26-3 is fixed with a first one-way valve 26-31, and the other end of the first one-way valve 26-31 is fixed on the placement shell 26-4. The oil inlet end of the oil storage sleeve 26-3 is fixed with a second one-way valve 26-32, and the other end of the second one-way valve 26-32 is fixed with an oil delivery hose 26-33.

[0057] A first rotating rod 26-5 is rotatably connected to the placement shell 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, the other end of the second rotating rod 26-6 is rotatably connected to the third rotating rod 26-8, 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.

[0058] The end of the oil delivery hose 26-33 away from the second one-way valve 26-32 is connected to the external lubricating oil source, and is used to create negative pressure in the oil storage sleeve 26-3 when the second sealing head 26-2 completes its reset action, and then cooperate with the second one-way valve 26-32 to automatically replenish the lubricating oil into the oil storage sleeve 26-3.

[0059] 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 high-pressure gas from the hollow ring 25-3, and 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.

[0060] When the lubricating oil in the placement shell 26-4 gradually accumulates, it provides buoyancy for the float 26-51 to change the inclination 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 stem 26-71 rotate, and the drain valve 26-7 is opened. The oil in the placement shell 26-4 is naturally discharged through the drain valve 26-7. As the oil is discharged, the float 26-51 will be reset due to gravity, and the drain valve 26-7 will automatically close.

[0061] A first carrier 14 is fixed on the top of the bottom plate 11 and slidably cooperates with the welded pipe body 12 . A second carrier 15 is fixed on the top of the bottom plate 11 , and the reduction motor 21 is bolted to the second carrier 15 .

[0062] In actual application, the second sealing head 26-2, the oil storage sleeve 26-3, the placement shell 26-4, the first rotating rod 26-5, the second rotating rod 26-6, the drain valve 26-7 and the third rotating rod 26-8 rely on buoyancy and gravity to cooperate in action. Therefore, the above-mentioned structure is only distributed in the upper position inside the hollow ring 25-3, forming a point-type oil injection, and with the repeated blowing of the pressure relief valve 26-1, after cleaning, the oil can be evenly sprayed and coated in the groove 12-1.

[0063] During use, the reduction motor 21 can be controlled to rotate forward first, so that the multiple expansion plates 23-3 gradually move inward, adjust the position of the displacement plate 24-2, and then put the sealing ring 13 on the displacement plate 24-2. Then, the reduction motor 21 can be controlled to rotate in the reverse direction, and the multiple expansion plates 23-3 move outward to evenly expand the sealing ring 13.

[0064] The welding pipe body 12 is sent into the first carrier 14, and the reduction motor 21 is controlled to rotate forward. The expansion plate 23-3 locks the welding pipe body 12 to ensure the position stability of the welding pipe body 12. At this time, the hollow ring 25-3 is located outside the slot 12-1.

[0065] The multi-section electric push rod 24-1 is controlled to slowly extend and work, the bearing plate 24-3 and the displacement plate 24-2 are driven to displace on the expansion plate 23-3, until the first convex seat 23-32 contacts and presses the displacement plate 24-2 to act for a distance, the first spring 24-21 is stretched, when the second convex seat 23-33 contacts the sealing ring 13, the sealing ring 13 is pressed to move out for a distance, with further displacement of the displacement plate 24-2, the inner circle of the sealing ring 13 gradually increases in the suspended space, and finally is quickly clamped into the clamping groove 12-1 under the action of the self-shrinking elastic force.

[0066] In the above process, with the displacement of the bearing plate 24-3, the telescopic frame 25-2 and the first sealing head 25-21 are synchronously displaced, the sealing sleeve 25-11 is folded to compress the gas in the fixed pipe 25-1, the gas pipe 25-12 and the hollow ring 25-3, when the gas pressure reaches the threshold value of the pressure relief valve 26-1, the pressure relief valve 26-1 is automatically opened, the first valve rod 26-11 is displaced to drive the second sealing head 26-2 to act, the lubricating oil in the oil storage sleeve 26-3 is squeezed into the placement shell 26-4 through the first one-way valve 26-31, until the pressure relief valve 26-1 is exhausted and pressure relief is completed, the first valve rod 26-11 drives the second sealing head 26-2 to automatically reset, and the lubricating oil is automatically supplemented into the oil storage sleeve 26-3 through the oil delivery hose 26-33 and the second one-way valve 26-32.

[0067] With the gradual extension of the multi-section electric push rod 24-1, the pressure relief valve 26-1 will repeat the above pressure relief process, and the clamping groove 12-1 can be cleaned by multiple uniform blowing, at the same time, the oil in the oil storage sleeve 26-3 is also continuously injected into the placement shell 26-4.

[0068] When the oil in the placement shell 26-4 gradually fills, the supporting floating ball 26-51 floats to a certain height, the second valve rod 26-71 is rotated to open, the oil in the placement shell 26-4 is naturally discharged through the liquid discharge valve 26-7, and is placed in the clamping groove 12-1, and at the same time, the pressure relief valve 26-1 is in the exhaust state, so that the oil is blown away, and in this way, the lubricating oil can cover the clamping groove 12-1, so as to reduce the friction during installation, avoid the distortion or damage of the sealing ring 13, and enhance the initial sealing effect.

[0069] Embodiment 3 Refer to Figures 4 to 13 This embodiment is based on the first two embodiments.

[0070] Specifically, a cleaning member 27 is provided on the movable rod 22, 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 to the outer end of the displacement frame 27-2, and 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 to the displacement frame 27-2, and the other end of the second spring 27-23 is fixed to the fixed plate 27-1.

[0071] When the welding pipe body 12 is 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 welding 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 welding pipe body 12 is clamped by the expansion plate 23-3, the fixed plate 27-1 will drive the displacement frame 27-2 to rotate synchronously, and cooperate with the elastic cleaning head 27-21 to clean the end face of the welding pipe body 12, which is beneficial to the subsequent testing of the welding pipe body 12 with the hydraulic press. When there is a need for a flat-plate sealing ring, this design will also achieve the purpose of auxiliary cleaning.

[0072] A positioning block is fixed inside the expansion plate 23-3, as shown in the accompanying drawings of the specification. 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.

[0073] The sides of the elastic cleaning heads 27-21 are tilted, as shown in the accompanying drawings. Figure 12 As shown, with this design, when the elastic cleaning head 27-21 rotates and contacts the positioning block on the expansion plate 23-3, the elastic cleaning head 27-21 is naturally compressed and displaced a certain distance, thereby avoiding collision and obstruction between the elastic cleaning head 27-21 and the positioning block.

[0074] The expansion support plate 23-3 is composed of a fixing seat and an assembly seat, as shown in the accompanying drawings of the specification. Figure 6 As shown, the assembly seat is connected to the fixing seat by bolts, and the inner sides of the fixing seat and the assembly seat are both arc-shaped, which are used to cooperate with the welding pipe body 12 to increase the contact area and ensure positioning stability.

[0075] The above-mentioned detachable design can flexibly install the assembly seat of corresponding length according to the different positions of the clamping groove 12-1 on the different welding pipe bodies 12, and the installation positions of the air injection member 25 and the oil injection member 26 also need to be adjusted accordingly.

[0076] One side of the assembly seat is tilted. When the sealing ring 13 moves, the first protrusion 23-32 and the second protrusion 23-33 cooperate to partially vacate the sealing ring 13, which is conducive to fitting the sealing ring 13 on the card slot 12-1.

[0077] 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 still be in sealing contact with the fixed tube 25-1 when the feeding member 24 moves to the inclined position of the assembly seat on the expansion plate 23-3.

[0078] The first boss 23-32 includes a base fixed on the expansion plate 23-3 and a ball with a clearance fit on the base, as shown in the accompanying drawings of the specification. Figure 8 As shown, this design reduces contact friction due to the contact between the ball and the displacement plate 24-2, which is beneficial for pushing the displacement plate 24-2 out a certain distance.

[0079] One side of the second protrusion 23-33 is tilted, as shown in the accompanying drawings. Figure 8 As shown, with this design, when the sealing ring 13 gradually approaches, the sealing ring 13 will gradually expand outward. Because the sealing ring 13 is in an inclined setting at this time, under the cooperation of gravity and the elastic force of the sealing ring 13 itself, the sealing ring 13 will tighten inward and be mounted on the card 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.

[0080] In actual application, an air supply check valve is fixed on the hollow ring 25-3, and a filter is installed on the air supply check valve to introduce external air into the hollow ring 25-3 when the multi-section electric push rod 24-1 contracts and resets.

[0081] 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 the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sealing ring device for a large diameter welded pipe hydraulic press, characterized by: include, A processing assembly (1) comprises a base plate (11), a welding pipe body (12) is provided on the top of the base plate (11), a clamping groove (12-1) is provided on the welding pipe body (12), and a sealing ring (13) is provided on the outer ring of the welding pipe body (12); and, The driving assembly (2) is arranged on the top of the base plate (11), and includes a reduction motor (21) located above the base plate (11), a movable rod (22) is fixed to the output end of the reduction motor (21), an expansion member (23) is sleeved and installed on the movable rod (22), a feeding member (24) is provided on one side of the expansion member (23), and includes 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), and the top of the bearing plate (24-3) is provided with a plurality of electric push rods (24-1) installed on the expansion member (23). A displacement plate (24-2) is provided, an air jet component (25) is provided on the outside of the expansion component (23), an oil injection component (26) is provided inside the air jet component (25), and includes a pressure relief valve (26-1) mounted on the air jet component (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), and a drain valve (26-7) is fixed outside the placement shell (26-4).

2. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 1, characterized in that: The movable rod (22) is provided with a screw thread (22-1), and the expansion member (23) comprises a base plate (23-1) threadedly connected to the screw 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 to the expansion plate (23-3), and a guide frame (23-5) is slidably connected to the guide plate (23-4).

3. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 2, characterized in that: A positioning groove (23-31) is provided on the outer side of the expansion plate (23-3), and a first convex seat (23-32) and a second convex seat (23-33) are respectively fixed on the expansion plate (23-3).

4. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 3, characterized in that: The fixed end of the multi-section electric push rod (24-1) is rotatably connected to the guide plate (23-4); a first groove (24-31) and a second groove (24-32) are respectively formed through the support plate (24-3); a receiving groove (24-33) is formed on the top side of the support plate (24-3); a first spring (24-21) is fixed on the displacement plate (24-2); the other end of the first spring (24-21) is fixed in the receiving groove (24-33); and an empty groove (24-22) is formed on the displacement plate (24-2).

5. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 4, characterized in that: The jet component (25) comprises a fixed tube (25-1) rotatably connected to the expansion plate (23-3), a telescopic frame (25-2) being slidably connected inside the fixed tube (25-1), an air delivery pipe (25-12) being fixed to one end of the fixed tube (25-1), and a hollow ring (25-3) being fixed to the other end of the air delivery pipe (25-12).

6. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 5, characterized in that: A first sealing head (25-21) is installed at one end of the telescopic frame (25-2) and is slidably engaged with the inner wall of the fixed tube (25-1). A sealing sleeve (25-11) is fixed to the bottom of the fixed tube (25-1).

7. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 6, characterized in that: The air inlet end 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); the 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 slidably cooperates 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); and an oil delivery hose (26-33) is fixed to the other end of the second one-way valve (26-32).

8. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 7, characterized in that: A first rotating rod (26-5) is rotatably connected in the placement shell (26-4), a floating ball (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), the other end of the second rotating rod (26-6) is rotatably connected to the third rotating rod (26-8), a second valve stem (26-71) is rotatably connected to the drain valve (26-7), and the other end of the second valve stem (26-71) is rotatably connected to the third rotating rod (26-8).

9. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 1, characterized in that: The movable rod (22) is provided with a cleaning member (27), comprising a fixed disk (27-1) fixed on the movable rod (22); a displacement frame (27-2) is provided on one side of the fixed disk (27-1); an elastic cleaning head (27-21) is fixed to the outer end of the displacement frame (27-2); a positioning rod (27-22) is fixed to the displacement frame (27-2); one end of the positioning rod (27-22) passes through the fixed disk (27-1) and is slidably connected to the fixed disk (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 to the displacement frame (27-2); and the other end of the second spring (27-23) is fixed to the fixed disk (27-1).

10. The sealing ring device for a large diameter welded pipe hydraulic press according to claim 1, characterized in that: A first carrier (14) is fixed on the top of the base plate (11) and is slidably matched with the welded pipe body (12). A second carrier (15) is fixed on the top of the base plate (11), and the reduction motor (21) is bolted to the second carrier (15).

Images