A tool for repairing special valves of petroleum

Abstract

The application relates to the technical field of valve maintenance, in particular to a tool for special petroleum valve maintenance, which comprises a base, a driving unit is installed in the middle of the upper end of the base, a valve body clamping unit is installed on the driving unit, a butterfly plate clamping unit is installed on the valve body clamping unit through a synchronous adjusting unit; the tool is used for grinding and repairing the valve seat sealing surface and the butterfly plate sealing surface in the valve body of a three-eccentric butterfly valve; the tool can clamp and fix valve bodies and valve seats of different sizes, ensures the maintenance efficiency of the three-eccentric butterfly valve, can synchronously adjust the inclination angles of the valve seat and the butterfly plate, ensures the up-down alignment of the positions of the valve seat and the butterfly plate, then makes the central axes of the valve body and the butterfly plate collinear, realizes the correlation of the sealing surface maintenance processes of the valve body and the butterfly plate, and significantly reduces the cumulative error in subsequent assembly caused by the independent maintenance of the sealing surfaces of the valve body and the butterfly plate.

Description

Technical Field

[0001] This invention relates to the field of valve repair technology, specifically a tooling for repairing special petroleum valves. Background Technology

[0002] In the fields of oil extraction, transportation, and refining, special oil valves, as critical fluid control equipment, need to operate under complex conditions such as high pressure, high temperature, strong corrosion, and sand content for extended periods. Their sealing performance and service life directly affect the safe and stable operation of the entire oil system. Among them, the triple eccentric butterfly valve is widely used in the oil industry due to its unique structural design. The "triple eccentricity" of the triple eccentric butterfly valve is specifically manifested as follows:

[0003] Axial eccentricity: There is an axial offset between the valve shaft axis and the sealing surface of the butterfly plate; Radial eccentricity: There is a radial offset between the valve shaft axis and the central axis of the valve body; Angular eccentricity: The sealing surface of the butterfly plate is inclined conical, forming an elliptical sealing cross section.

[0004] This design allows the sealing surface of the disc to achieve frictionless contact during opening and closing, significantly reducing wear on the sealing surface. It also has advantages such as excellent sealing performance, low operating torque, strong flow capacity and long service life, making it particularly suitable for high-pressure, large-diameter oil pipeline systems.

[0005] like Figure 8 As shown, in the structure of a triple eccentric butterfly valve, a valve seat is fixedly installed inside the valve body. The sealing surface of the valve seat and the sealing surface of the butterfly plate cooperate with each other to achieve the sealing function. A valve shaft hole is opened on the valve body, and a connecting hole is opened on the butterfly plate. The valve body and the butterfly plate are assembled by inserting the valve shaft into the valve shaft hole and the connecting hole. During long-term use, the sealing surface of the triple eccentric butterfly valve is prone to scratches due to factors such as media erosion and particle wear, which can lead to valve leakage. At this time, the sealing surface of the triple eccentric butterfly valve needs to be repaired by precision grinding to restore the sealing function.

[0006] Currently, the repair of the sealing surface of triple eccentric butterfly valves mostly adopts a split processing method: first, the operator disassembles the triple eccentric butterfly valve in sequence, then fixes the valve body with a special eccentric fixture, making the valve body tilted, and then uses a grinding machine to precisely grind and repair the sealing surface of the valve seat inside the valve body. Next, another set of eccentric fixtures is used to fix the butterfly plate, making the butterfly plate tilted, and then uses a grinding machine to precisely grind and repair the sealing surface of the butterfly plate. Finally, the operator assembles the precision-ground and repaired valve body and butterfly plate together to complete the repair of the triple eccentric butterfly valve.

[0007] The following problems exist in the current repair of triple eccentric butterfly valves: Since the repair processes of the valve seat sealing surface and the butterfly plate sealing surface within the valve body are independent, clamping errors, positioning errors, and machining errors are easily introduced during the grinding and repair of both sealing surfaces. These errors accumulate after reassembly, potentially leading to an inability to effectively match the machining precision of the two sealing surfaces. Ultimately, the accumulated errors may exceed the allowable range during final assembly, resulting in substandard sealing performance. Furthermore, existing eccentric clamps are mostly used to fix valve bodies and butterfly plates of specific sizes. When repairing the sealing surfaces of triple eccentric butterfly valves of different sizes, specific eccentric clamps need to be replaced, thus affecting the repair efficiency of triple eccentric butterfly valves. Summary of the Invention

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a tooling for repairing special petroleum valves, comprising a base, a drive unit mounted on the upper center of the base, a valve body clamping unit mounted on the drive unit, and a butterfly plate clamping unit mounted on the valve body clamping unit via a synchronous adjustment unit; the drive unit includes a continuously rotating drive ring rotatably mounted on the upper end of the base, and the valve body clamping unit includes a support ring mounted on the drive ring via an adjustment group, and multiple circumferentially evenly arranged fastening plates mounted on the support ring via a synchronous group, the synchronous group driving the multiple fastening plates to fasten to the valve body flange. The valve body is centered and fixed. The synchronous adjustment unit includes a synchronous rod with a telescopic structure concentrically arranged within the support ring. A positioning group is installed at the upper end of the synchronous rod, and a limiting group that makes the synchronous rod vertically arranged is connected between the lower end of the synchronous rod and the active ring. The lower end of the synchronous rod is connected to the butterfly plate clamping unit. The control adjustment group adjusts the central axis position of the valve seat tilt angle through the support ring. The support ring drives the valve body clamping unit to synchronously adjust the tilt angle of the butterfly plate. The valve body's valve shaft hole is positioned through the positioning group. The valve body makes the butterfly plate and the valve body's central axis collinear through the positioning group and the synchronous rod, significantly reducing the cumulative error during the sealing surface maintenance process.

[0009] Preferably, the synchronization group includes a synchronization plate that is radially slidably mounted on the upper end of the support ring and corresponds one-to-one with the fastening plate. The synchronization plate has a square hole, and the fastening plate is disposed in the corresponding square hole. The upper end of the fastening plate is slidably connected to the corresponding square hole through an elastic reset rod. The fastening plate has two symmetrically arranged oblique holes. The oblique holes are inclined upward at the end near the middle of the support ring. A mating block is slidably mounted in the oblique hole and fixedly mounted in the corresponding square hole.

[0010] Preferably, the support ring has an annular hole on its inner side, and the synchronization group further includes a synchronization ring rotatably installed in the annular hole. An annular electric slider assembly is connected between the synchronization ring and the support ring. The synchronization ring has an arc-shaped groove that corresponds one-to-one with the synchronization plate. A synchronization block is slidably installed in the arc-shaped groove. The upper end of the synchronization block slides through the support ring and is fixedly connected to the lower end of the corresponding synchronization plate.

[0011] Preferably, two symmetrically arranged connecting plates are fixedly installed on the outer cylindrical surface of the support ring. A clearance slider is slidably installed on the lower end of the left connecting plate. The continuous rotation of the active ring is achieved through the active component connected to the base. The adjustment group includes two symmetrically arranged adjusting blocks that are slidably installed on the upper end of the active ring. Two U-shaped rods symmetrically arranged front and back are fixedly installed between the two adjusting blocks. An adjusting screw is connected between the right adjusting block and the active ring. A hydraulic rod is installed on the upper end of the left adjusting block. The upper end of the hydraulic rod is hinged to the lower end of the clearance slider. A support plate is fixedly installed on the upper end of the right adjusting block. The upper end of the support plate is hinged to the lower end of the right connecting plate.

[0012] Preferably, the positioning assembly includes a positioning sleeve that slides up and down on the outer side of the upper end of the synchronizing rod. The upper end of the positioning sleeve is connected to the synchronizing rod via a connecting spring. Mounting rods are fixedly installed on both the front and rear sides of the positioning sleeve. The opposing sides of the two mounting rods are connected to detachable threaded rods via threads. Positioning rods are fixedly installed on the opposing sides of the two threaded rods.

[0013] Preferably, the limiting group includes a connecting sleeve fixedly sleeved on the outer side of the lower end of the synchronizing rod fixing end. Two L-shaped limiting plates symmetrically arranged front and back are fixedly installed on the outer side of the connecting sleeve. The limiting plates are located at one end of the active ring and are slidably connected to the active ring from left to right. A locking element is connected between the limiting plates and the active ring.

[0014] Preferably, the butterfly plate clamping unit includes a circular plate distributed below the support ring, with a through hole in the middle of the circular plate. The upper end of the circular plate is slidably connected to the lower end of the support ring by two symmetrically arranged square plates. A clamping assembly for clamping and fixing the butterfly plate is installed on the circular plate.

[0015] Preferably, the circular plate has two symmetrically arranged mounting holes, and a hollow rotating shaft is fixedly installed on the inner walls of the front and rear of the mounting holes. A U-shaped transmission plate is fixed to the lower end of the telescopic section of the synchronizing rod, and the lower ends of the two vertical sections of the transmission plate are set in the corresponding mounting holes and rotatably connected to the corresponding rotating shaft.

[0016] Preferably, the clamping assembly includes two adjusting screws arranged symmetrically front to back and threadedly connected to the circular plate. The adjusting screws are inserted into the hollow structure of the corresponding rotating shaft. Both adjusting screws pass through the circular plate on opposite sides and are fixedly installed with clamping plates. Both clamping plates are fixedly installed with insert shafts on opposite sides. A clamping block with a frustum structure is fixedly installed between the insert shaft and the clamping plate.

[0017] Preferably, the lower side of the through hole is configured with a flared structure, and two sets of elastic abutment rods are symmetrically arranged on the circular plate and slidably mounted on it. Each set of abutment rods includes multiple elastic abutment rods evenly arranged front and back.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention positions the valve shaft hole of the valve body using a positioning group. It also ensures the synchronizing rod is always vertically aligned by a limiting group. During the adjustment of the tilt angle of the valve body and the butterfly plate, the connecting hole of the butterfly plate and the mounting hole of the valve body are always vertically aligned, achieving vertical alignment of the valve body and the butterfly plate. This ensures the central axis of the valve body and the central axis of the butterfly plate are collinear, and that the central axis of the valve body, the central axis of the butterfly plate, and the rotation center line of the drive ring are collinear. Simultaneously, this invention uses a drive unit to synchronously adjust the angles of the valve body clamping unit and the butterfly plate clamping unit, making the tilt angle of the valve body the same as that of the butterfly plate. This increases the correlation during grinding and repairing the sealing surface of the butterfly plate and the valve seat sealing surface inside the valve body, significantly reducing the cumulative error during subsequent assembly caused by independent repair of the sealing surfaces of both, and ensuring that the sealing performance of the repaired triple-eccentric butterfly valve meets the standards.

[0020] 2. This invention uses a synchronous assembly to drive the fastening plate to fasten to the upper end of the lower flange structure of the valve body, enabling the fastening plate to center and clamp valve bodies of different sizes and specifications. At the same time, this invention uses a butterfly plate clamping unit to clamp and fix butterfly plates of different sizes and specifications, thereby ensuring the maintenance efficiency of triple eccentric butterfly valves.

[0021] 3. This invention uses a truncated cone-shaped clamping block to clamp and fix the connecting hole of the butterfly plate, ensuring that the central axis of the clamping block and the central axis of the connecting hole of the butterfly plate are collinear. Since the central axis of the clamping block and the rotating shaft are collinear, and the central axis of the rotating shaft is always located on the vertical axis of the synchronizing rod, the central axis of the connecting hole of the butterfly plate is always located on the vertical axis of the synchronizing rod, ensuring that the valve body and the butterfly plate are always vertically aligned. Multiple elastic abutment rods are used to elastically press the butterfly plate downwards, making the lower end face of the butterfly plate parallel to the upper end face of the circular plate, thus ensuring that the tilt angle of the butterfly plate matches the tilt angle of the circular plate, and thus ensuring that the tilt angle of the butterfly plate matches the tilt angle of the valve body. Finally, the grinding and repair of the sealing surface of the butterfly plate and the valve seat sealing surface inside the valve body are carried out simultaneously. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention after removing parts of the base, active ring, and connecting plate.

[0025] Figure 3 This is a cross-sectional view of the valve body clamping unit, the synchronous adjustment unit, and the butterfly plate clamping unit of the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the elastic reset rod, fastening plate, and mating block after the synchronous plate has been partially removed, according to the present invention.

[0027] Figure 5 This is a top view of the synchronization ring and synchronization block of the present invention.

[0028] Figure 6 This is a cross-sectional view of the synchronization adjustment unit and the butterfly plate clamping unit of the present invention.

[0029] Figure 7 This is the present invention. Figure 6 Enlarged view of point A.

[0030] Figure 8 This is a sectional view of the valve body, valve seat, and butterfly plate of a triple eccentric butterfly valve.

[0031] Figure 9 This is a diagram showing the state of the valve body and butterfly plate clamped together according to the present invention.

[0032] Reference numerals: 1. Base; 11. Driving component; 12. Grinding assembly one; 13. Mounting seat; 14. Grinding assembly two; 2. Drive unit; 21. Driving ring; 22. Adjustment assembly; 221. Adjustment block; 222. U-shaped rod; 223. Hydraulic rod; 224. Support plate; 3. Valve body clamping unit; 31. Support ring; 311. Connecting plate; 312. Clearing slider; 32. Synchronization assembly; 321. Synchronization plate; 322. Elastic reset rod; 323. Synchronization ring; 324. Annular electric slider assembly; 325. Synchronization block; 33. Fastening plate; 331. Mating block; 4. 1. Synchronous adjustment unit; 41. Synchronous rod; 411. Transmission plate; 42. Positioning group; 421. Positioning sleeve; 422. Connecting spring; 423. Mounting rod; 424. Threaded rod; 425. Positioning rod; 43. Limiting group; 431. Connecting sleeve; 432. Limiting plate; 433. Locking plate; 434. Locking pin; 5. Butterfly plate clamping unit; 51. Round plate; 511. Through hole; 512. Rotating shaft; 513. Elastic abutment rod; 52. Square plate; 53. Clamping group; 531. Adjusting screw II; 532. Clamping plate; 533. Insert shaft; 534. Clamping block. Detailed Implementation

[0033] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where no specific technology or conditions are specified in the embodiments, they shall be performed in accordance with the technology or conditions described in the literature in the field or in accordance with the product manual.

[0034] See Figure 1 A tooling for repairing special petroleum valves includes a base 1, a drive unit 2 installed at the upper middle part of the base 1, a valve body clamping unit 3 installed on the drive unit 2, and a butterfly plate clamping unit 5 installed on the valve body clamping unit 3 through a synchronous adjustment unit 4.

[0035] See Figure 1 and Figure 2 It should be noted that, in this invention, a grinding assembly 12 is installed on the upper right side of the base 1, and a mounting seat 13 is fixedly installed in the middle of the upper part of the base 1. A grinding assembly 14 is installed on the upper right side of the mounting seat 13. Both grinding assemblies 12 and 14 adopt existing technology. Both use high-speed rotating grinding tools (such as grinding wheels) to grind and repair the sealing surface of the triple eccentric butterfly valve. Both grinding assemblies 12 and 14 use a control system to precisely control the machining parameters such as the rotation speed, feed speed, and grinding depth of the corresponding grinding tools, so as to achieve precise grinding and repair of the sealing surface of the triple eccentric butterfly valve.

[0036] This invention is used for grinding and repairing the valve seat sealing surface and the butterfly plate sealing surface of a triple eccentric butterfly valve. This invention can clamp and fix valve bodies and valve seats of different sizes, ensuring efficient maintenance of triple eccentric butterfly valves. Simultaneously, this invention can synchronously adjust the tilt angle of the valve seat and the butterfly plate, ensuring that the positions of the butterfly plate and valve seat are vertically aligned, thereby making the central axis of the valve body and the central axis of the butterfly plate collinear. This links the maintenance process of the sealing surfaces of the valve body and the butterfly plate together, significantly reducing the cumulative error during subsequent assembly caused by independent maintenance of the sealing surfaces, and reducing the risk of substandard sealing performance due to cumulative errors exceeding the allowable range during final assembly.

[0037] Specifically, the operator first disassembles the triple eccentric butterfly valve in sequence, clamps and fixes the valve body using the valve body clamping unit 3, and clamps and fixes the butterfly plate using the butterfly plate clamping unit 5. Then, the operator controls the drive unit 2 to adjust the tilt angle of the valve body through the valve body clamping unit 3. The valve body clamping unit 3 drives the butterfly plate clamping unit 5 to adjust the tilt angle of the butterfly plate, so that the tilt angle of the valve body and the tilt angle of the butterfly plate are both the angular eccentricity values ​​of the triple eccentric butterfly valve. At the same time, the synchronous adjustment unit 4 drives the butterfly plate clamping unit 5 to align the butterfly plate and the valve body vertically, so that the central axis of the butterfly plate and the central axis of the valve body are collinear. The operator then controls the drive unit 2 to adjust the position of the valve body and the butterfly plate, so that the central axis of the valve body and the central axis of the butterfly plate are collinear with the rotation center line of the drive unit 2.

[0038] Next, the grinding tool of grinding group 12 is moved to the corresponding position of the sealing surface of the valve seat in the valve body, and the grinding tool of grinding group 2 is moved to the corresponding position of the sealing surface of the butterfly plate. The processing parameters of the corresponding grinding tools of grinding group 12 and grinding group 2 are precisely controlled. Grinding group 12 and grinding group 2 are started, and the drive unit 2 is started at the same time to drive the valve body and the butterfly plate to rotate around the rotation center line of drive unit 2 as the reference, so as to realize the synchronous and precise grinding and repair of the sealing surface of the valve seat and the sealing surface of the butterfly plate in the valve body. After the grinding and repair of the sealing surface of the valve seat and the sealing surface of the butterfly plate in the valve body is completed, the valve body clamping unit 3 is controlled to release the valve body and remove the valve body, and the butterfly plate clamping unit 5 is controlled to release the butterfly plate and remove the butterfly plate. Finally, the operator assembles the repaired valve body and butterfly plate to complete the repair of the sealing surface of the triple eccentric butterfly valve.

[0039] It should be noted that the angular eccentricity value of the triple eccentric butterfly valve is its inherent geometric design parameter. The central axis of the valve body and the butterfly plate can be measured by a precision measuring tool (such as a dial indicator). This is a necessary operation step when repairing the sealing surface of the existing triple eccentric butterfly valve. In this invention, the measurement of the central axis of the valve body and the butterfly plate adopts existing technology.

[0040] See Figure 1 The drive unit 2 includes an active ring 21 rotatably mounted on the upper end of the base 1. An active component 11 is connected between the active ring 21 and the base 1. The valve body clamping unit 3 includes a support ring 31 set on the active ring 21 by an adjustment group 22. Multiple circumferentially evenly arranged fastening plates 33 are installed on the support ring 31 by a synchronization group 32.

[0041] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The synchronization group 32 includes a synchronization plate 321 that is radially slidably mounted on the upper end of the support ring 31 and corresponds one-to-one with the fastening plate 33. The synchronization plate 321 has a square hole, and the fastening plate 33 is disposed in the corresponding square hole. The upper end of the fastening plate 33 is slidably connected to the corresponding square hole through an elastic reset rod 322. The fastening plate 33 has two symmetrically arranged oblique holes. The end of the oblique hole near the middle of the support ring 31 is inclined upward. A mating block 331 is slidably mounted in the oblique hole, and the mating block 331 is fixedly mounted in the corresponding square hole.

[0042] See Figure 3 and Figure 5 The support ring 31 has an annular hole on its inner side. The synchronization group 32 also includes a synchronization ring 323 rotatably installed in the annular hole. An annular electric slider assembly 324 is connected between the synchronization ring 323 and the support ring 31. The synchronization ring 323 has an arc-shaped groove that corresponds one-to-one with the synchronization plate 321. A synchronization block 325 is slidably installed in the arc-shaped groove. The upper end of the synchronization block 325 slides through the support ring 31 and is fixedly connected to the lower end of the corresponding synchronization plate 321. It should be noted that the two ends of the arc-shaped groove are close to the center of the synchronization ring 323 and far away from the center of the synchronization ring 323.

[0043] It should be noted that the active component 11 includes a gear ring fixedly sleeved on the outside of the active ring 21 and located above the base 1. A gear is meshed on the left side of the gear ring. The gear is fixedly connected to the motor output shaft fixedly installed on the base 1. The motor is set in a preset mounting slot on the base 1. By starting the motor, the gear is driven to rotate, and the gear drives the active ring 21 to rotate through the gear ring.

[0044] See Figure 1 , Figure 2 , Figure 3 , Figure 4, Figure 5 and Figure 9 The drive unit 2 is used to adjust the tilt angle of the valve body and drive the valve body to rotate, and the valve body clamping unit 3 is used to clamp and fix the valve body; specifically, firstly, the valve body is placed on the upper end of the support ring 31 with its valve shaft hole located above the valve seat and between multiple synchronous plates 321. Then, the annular electric slider assembly 324 is activated to drive the synchronous ring 323 to rotate. The synchronous ring 323 drives multiple synchronous plates 321 to move to opposite sides through the arc groove and the synchronous block 325. The synchronous plates 321 drive multiple fastening plates 33 to move to opposite sides. When multiple fastening plates 321 move to opposite sides, the valve body is clamped and fixed. When the clamping plate 33 is pressed against the outside of the valve body and the synchronizing plate 321 continues to move, the clamping plate 33 moves radially away from the valve body relative to the corresponding synchronizing plate 321 under the blocking action of the valve body. At the same time, the mating block 331 drives the clamping plate 33 to move downward through the oblique hole and stretches the telescopic section of the elastic reset rod 322, so that the clamping plate 33 is clamped on the upper end of the flange structure on the lower side of the valve body, realizing the centering and clamping fixation of the valve body. This allows the clamping plate 33 to clamp and fix valve bodies of different sizes and specifications, ensuring the maintenance efficiency of the triple eccentric butterfly valve.

[0045] The starting adjustment group 22 adjusts the tilt angle and left and right position of the valve body through the support ring 31, so that the tilt angle of the valve body corresponds to the eccentricity value of the triple eccentric butterfly valve. At the same time, the central axis of the valve body and the rotation center line of the active ring 21 are collinear. The starting active component 11 drives the active ring 21 to rotate. The active ring 21 drives the valve body to rotate through the adjustment group 22, so that the grinding group 12 can grind and repair the sealing surface of the valve seat in the valve body. After the grinding and repair of the sealing surface of the valve seat in the valve body is completed, the annular electric slider assembly 324 is controlled to drive the synchronous ring 323 to rotate. The synchronous ring 323 drives multiple fastening plates 33 to move to the opposite side to the initial position. At the same time, under the action of the mating block 331 and the oblique hole, the elastic reset rod 322 drives the fastening plate 33 to move relative to the corresponding synchronous plate 321 towards the center of the support ring 31 to the initial position, so that the valve body can be removed.

[0046] See Figure 1 and Figure 2 The support ring 31 has two symmetrically arranged connecting plates 311 fixedly installed on its outer cylindrical surface. A clearance slider 312 is slidably installed on the lower end of the left connecting plate 311. The adjustment group 22 includes two symmetrically arranged adjustment blocks 221 slidably installed on the upper end of the active ring 21. Two U-shaped rods 222 are fixedly installed between the two adjustment blocks 221. An adjustment screw is connected between the right adjustment block 221 and the active ring 21. A hydraulic rod 223 is installed on the upper end of the left adjustment block 221. The upper end of the hydraulic rod 223 is hinged to the lower end of the clearance slider 312. A support plate 224 is fixedly installed on the upper end of the right adjustment block 221. The upper end of the support plate 224 is hinged to the lower end of the right connecting plate 311.

[0047] Adjustment group 22 is used to adjust the tilt angle and central axis position of the valve body. Specifically, by controlling the hydraulic rod 223 to drive the clearance slider 312 to move upward, since the clearance slider 312 and the left connecting plate 311 are slidably connected, the hydraulic rod 223 drives the support ring 31 to rotate upward with the hinge point of the right connecting plate 311 and the support plate 224 as the reference, so that the left side of the support ring 31 is tilted upward. By controlling the displacement of the clearance slider 312 driven by the hydraulic rod 223, the tilt angle of the support plate 224 is controlled, so that the tilt angle of the valve body placed on the support ring 31 corresponds to the eccentricity value of the triple eccentric butterfly valve. By turning the adjusting screw, the left and right positions of the right adjusting block 221 are adjusted, and under the action of the U-shaped rod 222, the two adjusting blocks 221 move synchronously, so that the two adjusting blocks 221 adjust the left and right positions of the valve body through the hydraulic rod 223 and the support plate 224, so that the central axis of the valve body and the rotation center line of the active ring 21 are collinear.

[0048] See Figure 1 , Figure 2 and Figure 3 The butterfly plate clamping unit 5 includes a circular plate 51 distributed below the support ring 31. A through hole 511 is opened in the middle of the circular plate 51. The upper end of the circular plate 51 is slidably connected to the lower end of the support ring 31 by two square plates 52 arranged symmetrically on the left and right. A clamping assembly 53 for clamping and fixing the butterfly plate is installed on the circular plate 51. There is a certain distance between the circular plate 51, the hydraulic rod 223 and the support plate 224, so that the hydraulic rod 223 and the support plate 224 will not interfere with the rotation of the circular plate 51.

[0049] See Figure 1 , Figure 2 , Figure 3 and Figure 6 The synchronous adjustment unit 4 includes a telescopic rod 41 concentrically arranged in the support ring 31, a positioning group 42 is installed at the upper end of the synchronous rod 41, and a limit group 43 is connected between the lower end of the synchronous rod 41 and the active ring 21.

[0050] See Figure 6 and Figure 7 Two symmetrical mounting holes are provided on the circular plate 51. Hollow rotating shafts 512 are fixedly installed on the inner walls of the front and rear of the mounting holes. A U-shaped transmission plate 411 is fixed at the lower end of the telescopic section of the synchronous rod 41. The lower ends of the two vertical sections of the transmission plate 411 are set in the corresponding mounting holes and are rotatably connected to the corresponding rotating shafts 512.

[0051] See Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 9The butterfly plate clamping unit 5 is used to clamp and fix the butterfly plate, and the synchronous adjustment unit 4 is used to make the valve body central axis and the butterfly plate central axis collinear. Specifically, the connecting hole of the butterfly plate is placed in the corresponding position of the clamping group 53, and the end face of the butterfly plate faces downward. The clamping group 53 is controlled to clamp and fix the butterfly plate, and the end face of the butterfly plate is parallel to the upper end face of the circular plate 51. Then, the valve shaft hole of the valve body is positioned by the positioning group 42. When the support ring 31 is tilted at a certain angle, the support ring 31 is driven to tilt at a certain angle by the square plate 52. Under the action of the square plate 52, the tilt angle of the circular plate 51 and the support ring 31 is the same, so that the tilt angle of the butterfly plate is the same as the tilt angle of the valve body, and the tilt angle of the butterfly plate also corresponds to the angular eccentricity value of the triple eccentric butterfly valve.

[0052] During the rotation of the valve body driven by the support ring 31, the valve shaft hole of the valve body drives the synchronizing rod 41 to move left and right synchronously through the positioning group 42. Since the square plate 52 and the support ring 31 are slidably connected left and right, the lower end of the vertical section of the transmission plate 411 is rotatably connected to the rotating shaft 512 fixedly installed in the corresponding mounting hole. Moreover, the synchronizing rod 41 is a telescopic structure, which enables the synchronizing rod 41 to drive the circular plate 51 to move left and right. The circular plate 51 drives the butterfly plate to move left and right through the clamping group 53. At the same time, the synchronizing rod 41 is vertically arranged under the action of the limiting group 43, so that the connecting hole of the butterfly plate and the mounting hole of the valve body are vertically aligned, thereby enabling the valve body and the butterfly plate to move left and right. The valve body and butterfly plate are aligned vertically to make their central axes collinear, thus achieving collinearity of the valve body's central axis, butterfly plate's central axis, and the rotation center line of the drive ring 21. This increases the correlation between the butterfly plate sealing surface and the valve seat sealing surface within the valve body during grinding and repair, significantly eliminating error accumulation and ensuring that the sealing performance of the triple eccentric butterfly valve meets the standards after repair. When the valve body rotates with the rotation center line of the drive ring 21 as the reference, the support ring 31 drives the butterfly plate to rotate with the rotation center line of the drive ring 21 as the reference through the square plate 52. After the grinding and repair of the butterfly plate sealing surface is completed, the control clamping assembly 53 releases the butterfly plate, allowing it to be removed.

[0053] See Figure 6 and Figure 7 The clamping assembly 53 includes two adjusting screws 531 arranged symmetrically front to back and threadedly connected to the circular plate 51. The adjusting screws 531 are inserted into the hollow structure of the corresponding rotating shaft 512. The two adjusting screws 531 pass through the circular plate 51 on opposite sides and are fixedly installed with clamping plates 532. The two clamping plates 532 are fixedly installed with insert shafts 533 on opposite sides. A clamping block 534 with a frustum structure is fixedly installed between the outside of the insert shaft 533 and the clamping plate 532. The lower side of the through hole 511 is set as a flared structure. Two sets of elastic abutment rods arranged symmetrically on the left and right are installed through the circular plate 51 and slide up and down. Each set of abutment rods includes multiple elastic abutment rods 513 evenly arranged front to back.

[0054] The connecting holes of the butterfly plate are arranged front and back and placed on opposite sides of the two insert shafts 533. Then, by turning the adjusting screw 531, the two clamping plates 532 are moved to opposite sides. The clamping plates 532 move the two insert shafts 533 to opposite sides and insert them into the connecting holes of the butterfly plate. At the same time, multiple elastic clamping rods 513 press down elastically against the butterfly plate, making the lower end face of the butterfly plate parallel to the upper end face of the circular plate 51. This makes the tilt angle of the butterfly plate consistent with the tilt angle of the circular plate 51, ensuring that the tilt angle of the butterfly plate is consistent with the tilt angle of the valve body. As the two clamping plates 532 continue to move to opposite sides, the clamping plates 532 drive the frustum structure of the clamping block 534 to press against the connecting hole, thereby clamping and fixing butterfly plates of different sizes and specifications, ensuring the maintenance efficiency of the triple eccentric butterfly valve. Since the central axes of the adjusting screw 531, the rotating shaft 512, the clamping plate 532 and the clamping block 534 are collinear, the connecting hole of the butterfly plate is always located on the vertical axis of the synchronizing rod 41.

[0055] See Figure 2 , Figure 3 and Figure 6 The positioning assembly 42 includes a positioning sleeve 421 that is slidably fitted onto the outer side of the upper end of the synchronizing rod 41. The upper end of the positioning sleeve 421 is connected to the synchronizing rod 41 via a connecting spring 422. Mounting rods 423 are fixedly installed on both the front and rear sides of the positioning sleeve 421. The opposite sides of the two mounting rods 423 are connected to detachable threaded rods 424 via threads. The opposite sides of the two threaded rods 424 are fixedly installed with positioning rods 425.

[0056] See Figure 1 and Figure 6 The limiting group 43 includes a connecting sleeve 431 fixedly sleeved on the outer side of the lower end of the fixed end of the synchronizing rod 41. Two L-shaped limiting plates 432 arranged symmetrically front and back are fixedly installed on the outer side of the connecting sleeve 431. The limiting plates 432 are located at one end of the active ring 21 and are slidably connected to the active ring 21 from left to right. A locking element is connected between the limiting plates 432 and the active ring 21. The locking element includes a locking plate 433, which is fixedly installed on the upper end of the active ring 21 and located on the opposite side of the vertical section of the two limiting plates 432. The locking plate 433 has multiple threaded holes evenly arranged from left to right. A detachable locking pin 434 is threadedly connected in the threaded holes. Locking holes are opened on the opposite side of the vertical section of the two limiting plates 432 at the positions corresponding to the locking pins 434.

[0057] Positioning group 42 is used to position the valve shaft hole of the valve body, and limiting group 43 is used to ensure that the synchronizing rod 41 is always arranged vertically. Specifically, first, a positioning rod 425 corresponding to the diameter of the valve shaft hole of the valve body is selected. The operator manually moves the positioning sleeve 421 left and right to move the mounting rod 423 to the corresponding position of the valve shaft hole of the valve body. The positioning rod 425 is inserted into the valve shaft hole of the valve body, and the corresponding threaded rod 424 is screwed onto the mounting rod 423, so that the valve shaft hole of the valve body is always located on the vertical axis of the synchronizing rod 41. Since the connecting hole of the butterfly plate is always located on the vertical axis of the valve body, the valve shaft hole of the valve body is always located on the vertical axis of the synchronizing rod 41. On the vertical axis of the synchronizing rod 41, the butterfly plate and the valve body are aligned vertically. When the support ring 31 and the valve body rotate with the hinge of the right connecting plate 311 and the support plate 224 as the reference, the valve body drives the positioning sleeve 421 to rotate synchronously through the positioning rod 425. The rotation of the positioning sleeve 421 can be decomposed into its vertical movement relative to the synchronizing rod 41 and its left and right movement. Since the positioning sleeve 421 is connected to the synchronizing rod 41 through the connecting spring 422, the positioning sleeve 421 drives the synchronizing rod 41 to move left and right during this process.

[0058] Under the action of the connecting sleeve 431 and the limiting plate 432, the synchronizing rod 41 is always arranged vertically, so that the synchronizing rod 41 can drive the circular plate 51 to move left and right, and keep the butterfly plate and the valve body aligned vertically. After the tilt angle of the valve body and the butterfly plate is adjusted, the locking pin 434 is installed into the threaded hole corresponding to the locking hole of the limiting plate 432 and inserted into the locking hole to lock the limiting plate 432, thereby fixing the position of the butterfly plate. The operator can then rotate the positioning rod 425 to move the threaded rod 424 out of the mounting rod 423 to prevent interference between the positioning rod 425 and the grinding tool of the grinding assembly 12 when grinding and repairing the sealing surface of the valve seat in the valve body.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0060] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A tooling for repairing special petroleum valves, comprising a base, characterized in that, A drive unit is installed at the middle of the upper end of the base. A valve body clamping unit is installed on the drive unit. A butterfly plate clamping unit is installed on the valve body clamping unit through a synchronous adjustment unit. The drive unit includes a continuously rotating active ring rotatably mounted on the upper end of the base. The valve body clamping unit includes a support ring set on the active ring by an adjustment group. Multiple circumferentially evenly arranged fastening plates are installed on the support ring by a synchronization group. The synchronization group drives the multiple fastening plates to fasten to the valve body flange, thereby achieving centering and fixing of the valve body. The synchronous adjustment unit includes a synchronous rod with a telescopic structure concentrically arranged in the support ring. A positioning group is installed at the upper end of the synchronous rod, and a limiting group that makes the synchronous rod vertically arranged is connected between the lower end of the synchronous rod and the active ring. The lower end of the synchronous rod is connected to the butterfly plate clamping unit. The positioning assembly includes a positioning sleeve that slides up and down on the outer side of the upper end of the synchronizing rod. The upper end of the positioning sleeve is connected to the synchronizing rod through a connecting spring. Mounting rods are fixedly installed on both the front and rear sides of the positioning sleeve. The opposing sides of the two mounting rods are connected to detachable threaded rods through threads. The opposing sides of the two threaded rods are fixedly installed with positioning rods. The limiting group includes a connecting sleeve fixedly sleeved on the outer side of the lower end of the synchronizing rod. Two L-shaped limiting plates symmetrically arranged front and back are fixedly installed on the outer side of the connecting sleeve. The limiting plates are located at one end of the active ring and are slidably connected to the active ring from left to right. A locking element is connected between the limiting plates and the active ring. The butterfly plate clamping unit includes a circular plate distributed below the support ring. The circular plate has two mounting holes arranged symmetrically in front and behind. A hollow rotating shaft is fixedly installed on the inner walls of the front and rear of the mounting holes. A U-shaped transmission plate is fixed at the lower end of the telescopic section of the synchronizing rod. The lower ends of the two vertical sections of the transmission plate are set in the corresponding mounting holes and rotatably connected to the corresponding rotating shaft. The control adjustment group adjusts the central axis position of the valve seat tilt angle through the support ring. The support ring drives the valve body clamping unit to synchronously adjust the tilt angle of the butterfly plate. The valve body's valve shaft hole is positioned through the positioning group. The valve body makes the butterfly plate and the valve body's central axis collinear through the positioning group and the synchronizing rod, which significantly reduces the cumulative error during the sealing surface maintenance process.

2. The tooling for repairing special petroleum valves according to claim 1, characterized in that, The synchronization assembly includes a synchronization plate that is radially slidably mounted on the upper end of the support ring and corresponds one-to-one with the fastening plate. The synchronization plate has a square hole, and the fastening plate is set in the corresponding square hole. The upper end of the fastening plate is slidably connected to the corresponding square hole through an elastic reset rod. The fastening plate has two symmetrically arranged oblique holes. The oblique holes are inclined upward at the end near the middle of the support ring. A mating block is slidably mounted in the oblique hole and fixedly mounted in the corresponding square hole.

3. The tooling for repairing special petroleum valves according to claim 2, characterized in that, The inner side of the support ring is provided with an annular hole. The synchronization group also includes a synchronization ring rotatably installed in the annular hole. An annular electric slider assembly is connected between the synchronization ring and the support ring. The synchronization ring is provided with an arc-shaped groove that corresponds one-to-one with the synchronization plate. A synchronization block is slidably installed in the arc-shaped groove. The upper end of the synchronization block slides through the support ring and is fixedly connected to the lower end of the corresponding synchronization plate.

4. The tooling for repairing special petroleum valves according to claim 1, characterized in that, Two symmetrically arranged connecting plates are fixedly installed on the outer cylindrical surface of the support ring. A clearance slider is slidably installed on the lower end of the left connecting plate. The continuous rotation of the active ring is achieved through the active component connected to the base. The adjustment group includes two symmetrically arranged adjusting blocks that are slidably installed on the upper end of the active ring. Two U-shaped rods symmetrically arranged front and back are fixedly installed between the two adjusting blocks. An adjusting screw is connected between the right adjusting block and the active ring. A hydraulic rod is installed on the upper end of the left adjusting block. The upper end of the hydraulic rod is hinged to the lower end of the clearance slider. A support plate is fixedly installed on the upper end of the right adjusting block. The upper end of the support plate is hinged to the lower end of the right connecting plate.

5. The tooling for repairing special petroleum valves according to claim 1, characterized in that, A through hole is provided in the middle of the circular plate. The upper part of the circular plate is slidably connected to the lower end of the support ring by two square plates arranged symmetrically on the left and right. A clamping assembly for clamping and fixing the butterfly plate is installed on the circular plate.

6. The tooling for repairing special petroleum valves according to claim 5, characterized in that, The clamping assembly includes two adjusting screws arranged symmetrically front and back on a circular plate and threadedly connected to it. The adjusting screws are inserted into the hollow structure of the corresponding rotating shaft. Both adjusting screws pass through the circular plate on opposite sides and are fixedly installed with clamping plates. Both clamping plates are fixedly installed with insert shafts on opposite sides. A clamping block with a frustum structure is fixedly installed between the insert shaft and the clamping plate.

7. The tooling for repairing special petroleum valves according to claim 6, characterized in that, The lower side of the through hole is configured with a flared structure, and two sets of elastic abutment rods are symmetrically arranged on the circular plate and slidably mounted up and down. Each set of abutment rods includes multiple elastic abutment rods evenly arranged front and back.

Images