CN117733468A - Valve seat sealing surface repairing system - Google Patents
Valve seat sealing surface repairing system Download PDFInfo
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- CN117733468A CN117733468A CN202211124044.6A CN202211124044A CN117733468A CN 117733468 A CN117733468 A CN 117733468A CN 202211124044 A CN202211124044 A CN 202211124044A CN 117733468 A CN117733468 A CN 117733468A
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- valve seat
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- 238000007789 sealing Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 106
- 238000005520 cutting process Methods 0.000 claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims description 95
- 238000003466 welding Methods 0.000 claims description 82
- 238000000034 method Methods 0.000 claims description 17
- 238000012806 monitoring device Methods 0.000 claims description 14
- 230000008439 repair process Effects 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 238000003754 machining Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 14
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The disclosure belongs to the technical field of nuclear power, and particularly relates to a valve seat sealing surface repairing system. In this disclosure, online cutting device passes through first Y axle drive mechanism, first X axle drive mechanism and first main shaft drive mechanism, realizes the adjustment to the spatial position of first main shaft, realizes the real-time automatic accurate location of cutter through the axial and radial distance data of first distance sensor, has effectively avoided the error of bringing the location of manual measurement, cooperates the multidirectional removal of cutter, realizes remote control's online cutting, the effectual whole valve spare part purchase of reduction and replacement cost, the effectual on-the-spot irradiation dose of reduction maintenance personal.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a valve seat sealing surface repairing system.
Background
At present, the conventional defect elimination mode aiming at the irreparable defect of the sealing surface of the valve seat of the stop valve or the regulating valve is mainly completed through the replacement of the whole valve. The whole valve replacement work of the flange connection mode is relatively simple, and the whole valve replacement work process of the welding type valve is complex, particularly the nuclear-grade large-caliber stop valve or the regulating valve is required to be put into preparation and implementation work, and a large amount of manpower, material resources and financial resources are required to be put into operation.
From the analysis of actual field work, the whole valve replacement work of the welded valve has larger defects and uncertain factors. In the case of welded nuclear grade large caliber shut-off or regulator valves: firstly, preparing a whole valve spare part in advance; secondly, confirming technical requirements of welding, installation, test and the like required by the replacement of the whole valve through a design institute; thirdly, confirming the field implementation environment, and preparing a special tool according to the technical requirement; finally, the whole valve replacement work is completed on site and verified through experiments.
In the process, the preparation period of spare parts is long, uncertainty exists, the cost is high, the implementation technical conditions need to be confirmed after the spare parts are implemented, special tools are prepared according to the technical conditions by writing the implementation technical scheme, and simulation exercise is carried out by combining the actual conditions of the site. And finally, performing field implementation, nondestructive testing and hydrostatic testing. All links must strictly control quality otherwise disqualification of welding will seriously affect the planned work of the whole unit. When the sealing surface of the burst valve seat of the field valve cannot repair the defect without preparation, the maintenance work can be very passive or even can not be completed.
Whether the sealing surface of the valve seat of the known or unknown stop valve/regulating valve is defective, in order to ensure that the defect eliminating work is completed, the problem of online repair of the valve needs to be solved.
Disclosure of Invention
In order to overcome the problems in the related art, a valve seat sealing surface repairing system is provided.
According to an aspect of an embodiment of the present disclosure, there is provided a valve seat seal face repair system, the system including: the online cutting device, the online cutting device includes: the device comprises a first main shaft transmission mechanism, a first Z-axis transmission mechanism, a first Y-axis transmission mechanism, a first X-axis transmission mechanism, a first frame, a first connecting plate, a cutter, a first main shaft, a first control device and a distance sensor;
the online cutting device is arranged in a valve to be repaired, the first connecting plate is connected with a middle flange of the valve, the first Z-axis transmission mechanism, the first Y-axis transmission mechanism and the first X-axis transmission mechanism are connected with the first connecting plate through the first frame, the upper end of the first main shaft is respectively connected with the first Z-axis transmission mechanism, the first Y-axis transmission mechanism and the first X-axis transmission mechanism, the side wall of the lower end of the first main shaft is provided with an installation interface, the installation interface is used for installing the cutter or the distance sensor, the distance sensor is used for detecting the distance between the outer wall of the main shaft and an adjacent object in the radial direction and the axial direction, and the cutting edge of the cutter faces the outer side of the main shaft and is used for turning the contacted object;
under the condition that the distance sensor is arranged on the mounting interface, the first control device controls the first Y-axis transmission mechanism to adjust the transverse position of the main shaft in the horizontal direction, controls the first X-axis transmission mechanism to adjust the longitudinal position of the main shaft in the horizontal direction and controls the first Z-axis transmission mechanism to adjust the axial position of the distance sensor according to the axial distance data acquired by the distance sensor, so that the distance sensor is positioned in the upper port of the valve seat,
and under the condition that the distance sensor is positioned in the upper port of the valve seat, the first control device controls the first main shaft transmission mechanism to drive the distance sensor to rotate, and after the central position of the upper port of the valve seat is determined according to a plurality of radial distance data acquired by the distance sensor in the rotating process, the first Y-axis transmission mechanism and the first X-axis transmission mechanism are controlled to adjust the main shaft axis to the central position.
In one possible implementation manner, when the spindle axis is located at the central position, the distance sensor is detached from the mounting interface, and after the cutter is mounted on the mounting interface, the first control device controls the first spindle transmission mechanism to drive the cutter to rotate continuously, and controls the first Z-axis transmission mechanism to drive the cutter to move axially at a preset speed so as to turn the port on the valve seat.
In one possible implementation, the in-line cutting device includes a plurality of cutters, different cutters having differently shaped blades for machining slopes that form different horizontal inclinations.
In one possible implementation manner, the online cutting device further comprises a first camera and a first monitoring device, wherein the first camera is connected to the first main shaft and is used for shooting images of the cutter and the periphery of the cutter, and the first monitoring device is used for acquiring and displaying the images acquired by the first camera.
In one possible implementation, the system further comprises a plurality of foreign matter prevention devices, each of which is mountable at the valve inlet or outlet for preventing debris generated during cutting of the valve seat from entering the system conduit.
In one possible implementation, each foreign matter prevention device includes: the device comprises a fixed plate, a rubber ring, a moving plate, a baffle ring, a cam, a pressing bar, a guide rod, a lock nut and a cylindrical pin;
the fixed plate is fixedly connected to one end of the guide rod, one end of the cylindrical pin is fixedly connected to the other end of the guide rod, the cylindrical pin is perpendicular to the guide rod, the other end of the cylindrical pin is in threaded connection with the lock nut, the cam shaft is connected to the position, located between the guide rod and the lock nut, of the cylindrical pin, the pressing strip is connected to the edge of the cam, the moving plate is slidably connected to the guide rod and located between the fixed plate and the cylindrical pin, and the rubber ring is arranged between the fixed plate and the guide plate;
when the foreign matter prevention device is placed at the position of the pipeline to be sealed, the pressing strip is pulled to enable the cam to continuously rotate and press the moving plate to move towards the fixed plate, so that the rubber ring is pressed by the moving plate and the fixed plate to deform outwards until the outer contour of the rubber ring is uniformly in close contact with the inner wall of the position of the pipeline, the cam is kept still, and the lock nut is rotated towards the direction of the cam until the lock nut fixes the cam.
In one possible implementation manner, the fixed plate and the moving plate are in a shape of a circular truncated cone, an upper bottom surface of the fixed plate is opposite to an upper bottom surface of the moving plate, and the rubber ring is disposed between the fixed plate and a side surface of the moving plate.
In one possible implementation, the system further includes: an online welding apparatus, the online welding apparatus comprising: the second spindle transmission mechanism, the second Z-axis transmission mechanism, the second Y-axis transmission mechanism, the second X-axis transmission mechanism, the second frame, the second connecting plate, the rotating disc, the wire feeder, the welding machine, the welding gun, the second spindle and the second control device;
the second connecting plate is connected with the middle flange of the valve to be repaired under the condition that the online welding device is arranged in the valve to be repaired, the second Z-axis transmission mechanism, the wire feeder and the welding machine are connected with the second connecting plate through the second frame, the upper end of the second main shaft is connected with the second Z-axis transmission mechanism, the lower end of the second main shaft is connected with the rotating disc, and the rotating disc is connected with the welding gun through the second Y-axis transmission mechanism and the second X-axis transmission mechanism in sequence;
the second control device adjusts the position of the welding gun in the axial direction by controlling the second Z-axis transmission mechanism, controls the second Y-axis transmission mechanism to adjust the position of the welding gun in the horizontal and longitudinal direction, controls the second X-axis transmission mechanism to adjust the position of the welding gun in the horizontal and transverse direction, so that the welding gun is positioned at the position of the valve seat to be welded, and then controls the second main shaft transmission mechanism to drive the welding gun to rotate around the axis of the second main shaft, and controls the wire feeder and the welding machine to work so that the welding gun performs circumferential welding on the position of the valve seat to be welded.
In one possible implementation, the online welding apparatus further includes: the second camera and the second monitoring device;
the second camera is connected to the second main shaft and used for shooting the welding gun and images around the welding gun, and the second monitoring device is used for acquiring and displaying the images acquired by the second camera.
The beneficial effects of the present disclosure are: in this disclosure, online cutting device passes through first Y axle drive mechanism, first X axle drive mechanism and first main shaft drive mechanism, realizes the adjustment to the spatial position of first main shaft, realizes the real-time automatic accurate location of cutter through the axial and radial distance data of first distance sensor, has effectively avoided the error of bringing the location of manual measurement, cooperates the multidirectional removal of cutter, realizes remote control's online cutting, the effectual whole valve spare part purchase of reduction and replacement cost, the effectual on-the-spot irradiation dose of reduction maintenance personal.
Drawings
Fig. 1 is a schematic view of an in-line cutting apparatus according to an exemplary embodiment.
Fig. 2 is a schematic view illustrating a foreign matter prevention device according to an exemplary embodiment.
FIG. 3 is a schematic diagram of an online welding apparatus, according to an example embodiment.
FIG. 4 is a schematic diagram of a valve seat seal ring according to an example application.
Fig. 5 is a schematic diagram showing heat treatment of a valve seat according to an application example.
FIG. 6 is a schematic diagram illustrating a valve seat seal ring after replacement according to an application example.
In the figure:
1. a valve; 2. a valve seat ring; 3. sealing surface of valve seat; 4. sealing the welding part of the valve seat; 5. a first spindle drive mechanism; 6. a first Z-axis transmission mechanism; 7. a first Y-axis transmission mechanism; 8. a first X-axis transmission mechanism; 9. a first frame; 10. a first connection plate; 11. a first camera; 12. a cutter; 13. a first spindle; 14. a first control device; 15. a first monitoring device; 16. a wire feeder; 17. welding machine; 18. a water tank; 19. a second frame; 20. a second connecting plate; 21. a second Z-axis transmission mechanism; 22. a second spindle drive mechanism; 23. a second spindle; 24. a second camera; 25. a rotating disc; 26. a welding gun; 27. a second X-axis transmission mechanism; 28. a second Y-axis transmission mechanism; 29. a second monitoring device; 30. a second control device; 31. an electric heating rod; 32. an electric heating belt; 33. a fixing plate; 34. a rubber ring; 35. a moving plate; 36. a baffle ring; 37. a cam; 38. pressing strips; 39. a guide rod; 40. a lock nut; 41. cylindrical pins.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
Fig. 1 is a schematic view of an in-line cutting apparatus according to an exemplary embodiment. As shown in fig. 1, the valve seat seal surface repair system includes: the online cutting device, online cutting device includes: a first spindle 13 drive 5, a first Z-axis drive 6, a first Y-axis drive 7, a first X-axis drive 8, a first frame 9, a first connection plate 10, a tool 12, a first spindle 13, a first control device 14, and a distance sensor;
when the valve seat of the valve 1 needs to be cut, an online cutting device can be installed in the valve 1 to be repaired, a first connecting plate 10 can be connected with a middle flange of the valve 1, a first Z-axis transmission mechanism 6, a first Y-axis transmission mechanism 7 and a first X-axis transmission mechanism 8 are connected with the first connecting plate 10 through a first frame 9, the upper end of a first main shaft 13 is respectively connected with the first Z-axis transmission mechanism 6, the first Y-axis transmission mechanism 7 and the first X-axis transmission mechanism 8, the side wall of the lower end of the first main shaft 13 is provided with an installation interface, the installation interface is used for installing a cutter 12 or a distance sensor, the distance sensor is used for detecting the distance between the outer wall of the main shaft and an adjacent object in the radial direction and the axial direction, the cutting edge of the cutter 12 faces the outer side of the main shaft and is used for turning the contacted object;
under the condition that the distance sensor is installed on the installation interface, the first control device 14 controls the first Y-axis transmission mechanism 7 to adjust the transverse position of the main shaft in the horizontal direction according to the axial distance data acquired by the distance sensor, controls the first X-axis transmission mechanism 8 to adjust the longitudinal position of the main shaft in the horizontal direction, and controls the first Z-axis transmission mechanism 6 to adjust the axial position of the distance sensor, so that the distance sensor is positioned in the upper port of the valve seat.
For example, the lower end of the first connecting plate 10 may be a plane, the circumferential edge of the first connecting plate 10 may be tightly connected with the middle flange, the axial distance data may include a distance a between the first distance sensor and the upper object and a distance b between the first distance sensor and the lower object, the vertical distance c between the lower surface of the first connecting plate 10 and the valve seat sealing surface and the preset cutting distance d may be preset by the first control device 14 (when the distance d between the cutter 12 and the lower surface of the first connecting plate 10 is set, the cutter 12 may contact the valve seat sealing surface 3 for cutting), in the initial state, the first distance sensor may be controlled at the upper end of the valve seat sealing surface 3, the first control device 14 controls the first Y-axis transmission mechanism 7 and the first X-axis transmission mechanism 8 to adjust the positions of the first spindle 13 in the horizontal longitudinal direction and the horizontal transverse direction until the first spindle 13 is opposite to the upper port of the valve seat after judging a+b > c (indicating that the first spindle 13 is opposite to the upper port of the valve seat), then the first control device 14 controls the first Y-axis transmission mechanism 7 and the first X-axis transmission mechanism 8 to rest, the first control device 14 controls the first Z-axis transmission mechanism 6 to adjust the axial position of the distance sensor until the first Z-axis transmission mechanism 6 is judged to be a=d to be in the horizontal position.
In the case that the distance sensor is located in the upper port of the valve seat, the first control device 14 controls the first spindle 13 driving mechanism 5 to drive the distance sensor to rotate, determines the center position of the upper port of the valve seat according to a plurality of radial distance data collected by the distance sensor in the rotating process (for example, determines the horizontal center coordinates according to a plurality of radial distance data), and then the first control device 14 can control the first Y-axis driving mechanism 7 and the first X-axis driving mechanism 8 to adjust the spindle axis to the center position. Therefore, the accurate automatic centering of the cutter 12 can be realized by means of the real-time measurement of the first distance sensor on the internal structure of the valve body 1, a complex calculation process is not needed, and errors caused by manual measurement are effectively reduced.
Then, when the spindle axis is located at the center position, the distance sensor is detached from the mounting interface, and after the cutter 12 is mounted on the mounting interface, the first control device 14 controls the first spindle 13 transmission mechanism 5 to drive the cutter 12 to rotate continuously, and controls the first Z-axis transmission mechanism 6 to drive the cutter 12 to move axially at a preset speed to turn the port on the valve seat.
In one possible implementation, the in-line cutting apparatus may include a plurality of cutters, different cutters having differently shaped blades for machining slopes that form different horizontal inclinations. Fig. 4 is a schematic view of a valve seat sealing ring according to an application example, and as shown in fig. 4, turning operations of different forms can be performed on a valve seat sealing surface at the upper end and a bevel at the lower end of the valve seat sealing ring by replacing tools with different functions.
In a possible implementation manner, the online cutting device further comprises a first camera 11 and a first monitoring device 15, the first camera 11 is connected to the first spindle 13 and is used for shooting images around the cutter 12 and the cutter 12, and the first monitoring device 15 is used for acquiring and displaying the images acquired by the first camera 11. Thus, in the working process of the online cutting device, engineering personnel can check and monitor the working process in real time, and misoperation of the cutting device is prevented.
In one possible implementation, the system further comprises a plurality of foreign matter prevention devices, each of which is mountable at the valve inlet or outlet for preventing debris generated during cutting of the valve seat from entering the system conduit.
Fig. 2 is a schematic view illustrating a foreign matter prevention device according to an exemplary embodiment. Each foreign matter prevention device includes: the fixing plate 33, the rubber ring 34, the moving plate 35, the baffle ring 36, the cam 37, the pressing strip 38, the guide rod 39, the lock nut 40 and the cylindrical pin 41, wherein the fixing plate 33 is fixedly connected to one end of the guide rod 39, one end of the cylindrical pin 41 is fixedly connected to the other end of the guide rod 39, the cylindrical pin 41 is perpendicular to the guide rod 39, the other end of the cylindrical pin 41 is in threaded connection with the lock nut 40, the cam 37 is connected to the cylindrical pin 41 at a position between the guide rod 39 and the lock nut 40, the pressing strip 38 is connected to the edge of the cam 37, the moving plate 35 is connected to the guide rod 39 at a position between the fixing plate 33 and the cylindrical pin 41 in a sliding mode, and the rubber ring 34 is arranged between the fixing plate 33 and the guide plate;
when the foreign matter prevention device is placed at the position of the pipeline to be sealed, the cam 37 is continuously rotated by pulling the pressing bar 38 and the moving plate 35 is extruded to move towards the fixed plate 33, so that the rubber ring 34 is extruded by the moving plate 35 and the fixed plate 33 to be deformed outwards, the cam 37 is kept still after the outer contour of the rubber ring 34 is uniformly in close contact with the inner wall of the pipeline position, and the lock nut 40 is rotated towards the direction of the cam 37 until the lock nut 40 fixes the cam 37.
In one possible implementation, as shown in fig. 2, the fixed plate 33 and the moving plate 35 have a truncated cone shape, an upper bottom surface of the fixed plate 33 and an upper bottom surface of the moving plate 35 are opposite, and the rubber ring 34 is disposed between side surfaces of the fixed plate 33 and the moving plate 35.
In one possible implementation, as shown in fig. 2, a stop ring 36 is provided between the moving plate 35 and the cam 37 for reducing wear of the cam 37 on the moving plate 35.
FIG. 3 is a schematic diagram of an online welding apparatus, according to an example embodiment. As shown in fig. 3, the system further includes: an online welding device, the online welding device comprising: a second spindle 23 transmission mechanism 22, a second Z-axis transmission mechanism 21, a second Y-axis transmission mechanism 28, a second X-axis transmission mechanism 27, a second frame 19, a second connecting plate 20, a rotating disk 25, a wire feeder 16, a welding machine 17, a welding gun 26, a second spindle 23 and a second control device 30;
in the case that the online welding device is arranged in the valve 1 to be repaired, the second connecting plate 20 is connected with a middle flange of the valve 1 to be repaired, the second Z-axis transmission mechanism 21, the wire feeder 16, the welding machine 17 and the water tank 18 are connected with the second connecting plate 20 through the second frame 19, the upper end of the second main shaft 23 is connected with the second Z-axis transmission mechanism 21, the lower end of the second main shaft 23 is connected with the rotating disc 25, and the rotating disc 25 is connected with the welding gun 26 through the second Y-axis transmission mechanism 28 and the second X-axis transmission mechanism 27 in sequence;
the second control device 30 controls the second Z-axis transmission mechanism 21 to adjust the position of the welding gun 26 in the axial direction, controls the second Y-axis transmission mechanism 28 to adjust the position of the welding gun 26 in the horizontal and longitudinal directions, controls the second X-axis transmission mechanism 27 to adjust the position of the welding gun 26 in the horizontal and transverse directions, so that the welding gun 26 is positioned at a position where a valve seat is to be welded, and then controls the second main shaft 23 transmission mechanism 22 to drive the welding gun 26 to rotate around the axis of the second main shaft 23, and controls the wire feeder 16 and the welding machine 17 to work so that the welding gun 26 performs circumferential welding on the valve seat sealing welding position 4. The water tank 18 is used for cooling the welding gun through a cooling pipeline to prevent the welding gun from overheating.
In one possible implementation, the online welding apparatus further includes: a second camera 24 and a second monitoring device 29; the second camera 24 is connected to the second main shaft 23, and is used for capturing images of the welding gun 26 and the surrounding of the welding gun 26, and the second monitoring device 29 is used for acquiring and displaying the images acquired by the second camera 24.
In a possible implementation, the valve seat sealing surface 3 repairing system further comprises a heat treatment device, fig. 5 is a schematic diagram showing heat treatment of the valve seat according to an application example, and as shown in fig. 5, the heat treatment device further comprises an electric heating rod 31 and an electric heating belt 32, wherein the electric heating rod 31 is used for penetrating into a flange in the valve body of the valve body and inserting into the valve seat ring 2 for heating, and the electric heating belt 32 is used for winding outside the valve 1 for heating.
In one example application, a valve is repaired using a step.
Step one, collecting relevant information (caliber, material and the like) of a valve to be repaired, determining a repair process and writing a technical file;
step two, disassembling the valve to be repaired, and measuring relevant data of the valve required by repair;
measuring the relevant data information of the sealing surface of the valve seat;
measuring and confirming the axis X, Y coordinates of the valve seat;
fifthly, confirming the machining size of the new valve seat sealing ring according to the measured data information;
step six, installing an on-line cutting device in a cavity of the valve;
step seven, cutting the valve seat on line according to the size of the new valve seat ring;
step eight, PT checking is conducted on the valve seat cutting part and the groove;
step nine, installing a new valve seat sealing ring to a valve seat cutting part, and installing a valve seat sealing surface positioning device to ensure that the valve seat sealing ring is coaxial with the valve seat;
step ten, the online cutting device is disassembled, and a heat treatment device is installed;
step eleven, performing pre-welding heat treatment by using a heat treatment device;
step twelve, detaching the heat treatment device, and installing an online welding device in the valve cavity;
thirteenth, welding a new valve seat sealing ring by using an online welding device;
fourteen, detaching the online welding device and installing a heat treatment device;
fifteen, performing postweld heat treatment by adopting a heat treatment device;
sixthly, detaching the heat treatment device, and installing an on-line cutting device in the valve cavity;
seventeenth, performing online machining (rough turning and finish turning) on seal welding of a new valve seat seal ring;
eighteenth, performing welding seam PT inspection on the new valve seat ring seal welding;
nineteenth, performing a color printing test by using the valve core and the repaired valve seat ring sealing surface;
and twenty, resetting the valve.
Further, as described above, the method for on-line repair of the valve seat sealing surface of the stop valve/regulating valve, wherein the method for measuring and confirming the axis coordinate of the valve seat sealing surface in the fourth step is as follows: in the on-line cutting of the sealing surface of the valve seat of the stop valve/regulating valve in the on-line repairing process, a special on-line cutting device is used, the X, Y, Z three-axis linkage can be realized by the device, and the cutter disc is arranged on the main shaft arm. The diameter of the inner ring of the sealing surface of the valve seat can be measured by replacing the cutter disc with a precise infrared range finder after the cutter disc is disassembled, the axis X, Y coordinate of the sealing surface of the valve seat is automatically calculated through a control cabinet equipped with an online cutting device, and the coordinate is displayed through the control cabinet. The specific operation method is that the cutter disc of the online cutting device is replaced by a precise infrared range finder, the whole device is installed on the valve body, the precise infrared range finder completes one rotation through operation control of the control cabinet, the four-side distance is measured, and then the axis X, Y coordinates of the sealing surface of the valve seat are calculated and recorded.
Further, the online repair process for the sealing surface of the valve seat of the stop valve/regulating valve is as described above, wherein the online cutting valve seat method in the step seven is as follows: and (3) online replacing the infrared precise distance meter used after the measurement in the step four with a cutter head (the whole set of online cutting device is replaced at the time without disassembly, and the replacement of the cutter head and the distance meter can be completed only by up-and-down expansion of a main shaft arm). According to the axis X, Y coordinate of the valve seat sealing surface and the Z coordinate of the valve seat cutting depth, and the cutting program input by the control cabinet, the control cabinet controls the main shaft arm cutter disc to extend to the X, Y, Z coordinate position confirmed in the valve cavity. And starting the on-line cutting device, starting the cutter head to rotate and revolve, and controlling the cutter head to automatically step by every cutting program to finish a circle until the valve seat is machined so that the machined surface of the valve seat meets the requirement of new valve seat ring installation.
Further, as described above for the shut-off valve/regulator valve seat sealing surface on-line repair process, the method of installing a new seat sealing surface by thirteen welds in step is: and installing a special welding device to the valve body, wherein the device is provided with a camera and a remote controller, and remotely controlling a welding gun of the welding device to move to the groove position of the to-be-welded part through the camera and the remote controller. And adjusting the height of the welding gun, manually completing one rotation of the welding gun, observing the distance between the welding gun and the groove, and adjusting the coordinates of the welding gun according to the distance until the welding gun is positioned at the center of the annular groove. And (5) starting welding, controlling the interlayer temperature, and finishing online welding of the sealing ring of the new valve seat.
Further, the method for on-line repair of the valve seat sealing surface of the stop valve/regulating valve as described above, wherein seventeen steps of machining the new valve seat sealing surface bead is as follows: the specific implementation process and method are the same as the step six, and the difference is that the machining program in the control cabinet needs to be input again and formulated according to the specific machining size requirement.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement of the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A valve seat sealing surface repair system, the system comprising: the online cutting device, the online cutting device includes: the device comprises a first main shaft transmission mechanism, a first Z-axis transmission mechanism, a first Y-axis transmission mechanism, a first X-axis transmission mechanism, a first frame, a first connecting plate, a cutter, a first main shaft, a first control device and a distance sensor;
the online cutting device is arranged in a valve to be repaired, the first connecting plate is connected with a middle flange of the valve, the first Z-axis transmission mechanism, the first Y-axis transmission mechanism and the first X-axis transmission mechanism are connected with the first connecting plate through the first frame, the upper end of the first main shaft is respectively connected with the first Z-axis transmission mechanism, the first Y-axis transmission mechanism and the first X-axis transmission mechanism, the side wall of the lower end of the first main shaft is provided with an installation interface, the installation interface is used for installing the cutter or the distance sensor, the distance sensor is used for detecting the distance between the outer wall of the main shaft and an adjacent object in the radial direction and the axial direction, and the cutting edge of the cutter faces the outer side of the main shaft and is used for turning the contacted object;
under the condition that the distance sensor is arranged on the mounting interface, the first control device controls the first Y-axis transmission mechanism to adjust the transverse position of the main shaft in the horizontal direction, controls the first X-axis transmission mechanism to adjust the longitudinal position of the main shaft in the horizontal direction and controls the first Z-axis transmission mechanism to adjust the axial position of the distance sensor according to the axial distance data acquired by the distance sensor, so that the distance sensor is positioned in the upper port of the valve seat,
and under the condition that the distance sensor is positioned in the upper port of the valve seat, the first control device controls the first main shaft transmission mechanism to drive the distance sensor to rotate, and after the central position of the upper port of the valve seat is determined according to a plurality of radial distance data acquired by the distance sensor in the rotating process, the first Y-axis transmission mechanism and the first X-axis transmission mechanism are controlled to adjust the main shaft axis to the central position.
2. The system of claim 1, wherein when the spindle axis is at the center position, the distance sensor is detached from the mounting interface, and the cutter is mounted on the mounting interface, the first control device controls the first spindle transmission mechanism to drive the cutter to rotate continuously, and controls the first Z-axis transmission mechanism to drive the cutter to move axially at a preset speed to turn the port on the valve seat.
3. The system of claim 1, wherein the in-line cutting device comprises a plurality of cutters, different cutters having differently shaped blades for machining slopes forming different horizontal inclinations.
4. The system of claim 1, wherein the online cutting device further comprises a first camera and a first monitoring device, the first camera is connected to the first spindle and is used for shooting images of the cutter and the surroundings of the cutter, and the first monitoring device is used for acquiring and displaying the images acquired by the first camera.
5. The system of claim 1, further comprising a plurality of anti-alien devices, each anti-alien device being mountable at the valve inlet or outlet for preventing debris generated during cutting of the valve seat from entering a system conduit.
6. The system of claim 5, wherein each foreign object prevention device comprises: the device comprises a fixed plate, a rubber ring, a moving plate, a baffle ring, a cam, a pressing bar, a guide rod, a lock nut and a cylindrical pin;
the fixed plate is fixedly connected to one end of the guide rod, one end of the cylindrical pin is fixedly connected to the other end of the guide rod, the cylindrical pin is perpendicular to the guide rod, the other end of the cylindrical pin is in threaded connection with the lock nut, the cam shaft is connected to the position, located between the guide rod and the lock nut, of the cylindrical pin, the pressing strip is connected to the edge of the cam, the moving plate is slidably connected to the guide rod and located between the fixed plate and the cylindrical pin, and the rubber ring is arranged between the fixed plate and the guide plate;
when the foreign matter prevention device is placed at the position of the pipeline to be sealed, the pressing strip is pulled to enable the cam to continuously rotate and press the moving plate to move towards the fixed plate, so that the rubber ring is pressed by the moving plate and the fixed plate to deform outwards until the outer contour of the rubber ring is uniformly in close contact with the inner wall of the position of the pipeline, the cam is kept still, and the lock nut is rotated towards the direction of the cam until the lock nut fixes the cam.
7. The system of claim 6, wherein the fixed plate and the movable plate are in the shape of a circular truncated cone, an upper bottom surface of the fixed plate and an upper bottom surface of the movable plate are opposite, and the rubber ring is disposed between the fixed plate and a side surface of the movable plate.
8. The system of claim 1, wherein the system further comprises: an online welding apparatus, the online welding apparatus comprising: the second spindle transmission mechanism, the second Z-axis transmission mechanism, the second Y-axis transmission mechanism, the second X-axis transmission mechanism, the second frame, the second connecting plate, the rotating disc, the wire feeder, the welding machine, the welding gun, the second spindle and the second control device;
the second connecting plate is connected with the middle flange of the valve to be repaired under the condition that the online welding device is arranged in the valve to be repaired, the second Z-axis transmission mechanism, the wire feeder and the welding machine are connected with the second connecting plate through the second frame, the upper end of the second main shaft is connected with the second Z-axis transmission mechanism, the lower end of the second main shaft is connected with the rotating disc, and the rotating disc is connected with the welding gun through the second Y-axis transmission mechanism and the second X-axis transmission mechanism in sequence;
the second control device adjusts the position of the welding gun in the axial direction by controlling the second Z-axis transmission mechanism, controls the second Y-axis transmission mechanism to adjust the position of the welding gun in the horizontal and longitudinal direction, controls the second X-axis transmission mechanism to adjust the position of the welding gun in the horizontal and transverse direction, so that the welding gun is positioned at the position of the valve seat to be welded, and then controls the second main shaft transmission mechanism to drive the welding gun to rotate around the axis of the second main shaft, and controls the wire feeder and the welding machine to work so that the welding gun performs circumferential welding on the position of the valve seat to be welded.
9. The system of claim 8, wherein the online welding device further comprises: the second camera and the second monitoring device;
the second camera is connected to the second main shaft and used for shooting the welding gun and images around the welding gun, and the second monitoring device is used for acquiring and displaying the images acquired by the second camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211124044.6A CN117733468A (en) | 2022-09-15 | 2022-09-15 | Valve seat sealing surface repairing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211124044.6A CN117733468A (en) | 2022-09-15 | 2022-09-15 | Valve seat sealing surface repairing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117733468A true CN117733468A (en) | 2024-03-22 |
Family
ID=90253238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211124044.6A Pending CN117733468A (en) | 2022-09-15 | 2022-09-15 | Valve seat sealing surface repairing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117733468A (en) |
-
2022
- 2022-09-15 CN CN202211124044.6A patent/CN117733468A/en active Pending
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