CN113798778A - Method for overhauling large-head shaft sleeve of guide vane of water turbine - Google Patents
Method for overhauling large-head shaft sleeve of guide vane of water turbine Download PDFInfo
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- CN113798778A CN113798778A CN202111154338.9A CN202111154338A CN113798778A CN 113798778 A CN113798778 A CN 113798778A CN 202111154338 A CN202111154338 A CN 202111154338A CN 113798778 A CN113798778 A CN 113798778A
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- guide vane
- shaft sleeve
- big
- hydraulic jack
- pull rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
Abstract
The invention discloses a method for overhauling a guide vane big end shaft sleeve of a water turbine, which comprises the following steps: 1. a guide vane big-end shaft sleeve is dismounted by adopting a limiting pin dismounting device, a guide vane crank arm dismounting device, a jackscrew and a guide vane big-end shaft sleeve dismounting device; 2. cleaning the surface of the disassembled guide vane big-end shaft sleeve; 3. repairing or replacing a new guide vane big end shaft sleeve and replacing the sealing ring; 4. and (5) returning to install the guide vane big end shaft sleeve. The method for disassembling and overhauling the guide vane big end shaft sleeve can reduce the disassembling difficulty, shorten the construction period, and provide guarantee for the safety of workers because parts are not easy to damage in the disassembling process.
Description
Technical Field
The invention relates to a method for overhauling a guide vane big end shaft sleeve of a water turbine.
Background
The guide vane rotating in the bulb tubular set is supported by the spherical shaft sleeve, the fixed outer guide ring and the fixed inner guide ring, the guide vane is fixed by the small-head short shaft, the large-head end shaft bearing and the bearing sleeve, and the flow passage water is sealed by the rubber sealing ring. Because the shaft sleeve and the sealing ring are soaked in water for a long time, the problems of seal aging, damage, water leakage, shaft sleeve abrasion, rusting and the like can occur after the running time is long, the safe and stable running of the unit is influenced, and the shaft sleeve with the large end of the guide vane needs to be removed for overhauling or replacing.
Due to the characteristics of a river basin of a hydraulic power plant, the river sediment is more, the big end shaft bearing of the guide vane is soaked in water for a long time, so that the big end shaft bearing is seriously corroded, meanwhile, the original bearing is not provided with a special dismantling mechanism and a dismantling tool, the dismantling is difficult by using the traditional striking and mechanical force dismantling method, the efficiency is low, the construction period cannot be guaranteed, and equipment damage and personal injury accidents are easily caused.
Disclosure of Invention
In order to solve the problems, the invention provides a method for overhauling a large-head shaft sleeve of a guide vane of a water turbine.
The invention provides the following technical scheme:
the method for overhauling the large-head shaft sleeve of the guide vane of the water turbine comprises the following steps:
1. from the hydraulic turbine on with the stator major part axle sleeve dismantlement, include:
1.1, disassembling and separating a guide vane crank arm and a control ring connecting rod, wherein the guide vane crank arm is connected with the control ring connecting rod through a hinge joint, and the guide vane crank arm and the control ring connecting rod can be disassembled and separated by disassembling a screw at the hinge joint;
1.2, a limiting pin detacher is adopted to detach a limiting pin between a guide vane crank arm and a guide vane, the limiting pin detacher is fixedly connected with the end part of the limiting pin and applies force upwards to pull out the limiting pin, the outer cover of the crank arm is taken down, and the limiting pin is provided with a part protruding out of the upper end of the outer cover of the crank arm and is square;
1.3, a guide vane arm puller is adopted to detach the guide vane arm, the guide vane arm puller is fixed on the outer wall of the guide vane arm, and uniformly distributed pulling forces are applied to the outer wall of the guide vane arm puller to pull the guide vane arm out of a guide vane big end pivot, the pulling forces of all parts are the same, so that the guide vane arm can move upwards along the axial direction of the guide vane big end pivot;
1.4, sequentially disassembling a shaft sleeve cover and a guide vane bearing by adopting jackscrews, screwing a plurality of jackscrews into jackscrew holes of the shaft sleeve cover or the guide vane bearing, moving the shaft sleeve cover and the guide vane bearing upwards along the jackscrews and separating from a guide vane big-end pivot, wherein the shaft sleeve cover is provided with two evenly distributed jackscrew holes, and the upper end of the guide vane bearing is provided with four evenly distributed jackscrew holes; when the shaft sleeve cover is disassembled, the lower end of the jackscrew is supported at the upper end of the guide vane bearing, and the shaft sleeve cover is removed by rotating the jackscrews at the two sides; when the guide vane bearing is disassembled, four jackscrews are screwed into the jackscrew holes, the lower ends of the jackscrews are propped against the bearing seat, and the guide vane bearing with the rotary jackscrews is moved upwards and disassembled.
1.5, a guide vane big-end shaft sleeve detacher is adopted to pull out the guide vane big-end shaft sleeve from the guide vane bearing detached in the step 1.4, the guide vane big-end shaft sleeve detacher applies uniformly distributed supporting force to the upper end of the guide vane bearing, applies a plurality of uniformly distributed pulling forces to the upper end of the guide vane big-end shaft sleeve, separates the guide vane big-end shaft sleeve from the guide vane bearing, adopts the uniformly distributed supporting force and pulling force to prevent the bearing from deforming during detachment, and can quickly pull out the guide vane big-end shaft sleeve from the guide vane bearing seriously corroded;
2. cleaning the surface of the guide vane big-end shaft sleeve disassembled in the step 1.5, measuring the size of the guide vane big-end shaft sleeve, judging whether the guide vane big-end shaft sleeve is abraded or not according to the measured size, if the guide vane big-end shaft sleeve is abraded, entering the step 3, and if the guide vane big-end shaft sleeve is not abraded, entering the step 4;
3. repairing or replacing a new guide vane big end shaft sleeve and replacing the sealing ring;
4. returning to install guide vane big end shaft sleeve;
further, the limiting pin remover in the step 1.2 comprises a pin pulling cylinder, a pull rod, a nut, a hollow hydraulic jack and a hydraulic pump, wherein two ends of the pin pulling cylinder are open, one end of the pin pulling cylinder is used for supporting the hollow hydraulic jack, the other end of the pin pulling cylinder is supported on the guide vane crank arm, the pull rod is arranged in the pin pulling cylinder and the hollow hydraulic jack, threads are arranged on the pull rod, one end of the pull rod extends out of the hollow hydraulic jack and is fixed on a top rod of the hollow hydraulic jack in a matched manner with the nut, the hollow hydraulic jack is connected with a hydraulic pump guide pipe, and the other end of the pull rod is used for being fixedly connected with the limiting pin on the guide vane crank arm. The ejector rod in the hollow hydraulic jack can drive the pull rod to move upwards to pull out the limiting pin, so that the labor capacity can be reduced, and the maintenance period can be shortened.
Further, the stator turning arm detacher in step 1.3 includes the support frame, the gasket, cavity hydraulic jack and hydraulic pump, the support frame includes supporting leg and backup pad, the supporting leg includes several, the equipartition is fixed in the periphery of backup pad lower extreme face, the lower extreme of supporting leg is used for with stator turning arm fixed connection, the gasket is placed between cavity hydraulic jack and backup pad, cavity hydraulic jack and hydraulic pump pipe connection, push up the backup pad through hydraulic pump control cavity hydraulic jack, and increase the quantity of gasket in order to extract stator turning arm between cavity hydraulic jack and backup pad.
Further, the guide vane big-end shaft sleeve detacher in step 1.5 comprises a supporting cylinder, a pull rod, a nut, a hollow hydraulic jack and a hydraulic pump, wherein the supporting cylinder is used for being supported on a guide vane bearing, the pull rod, the nut and the hollow hydraulic jack comprise at least two pull rods, the nut and the hollow hydraulic jack are uniformly distributed on the circumference of the guide vane big-end shaft sleeve, the hollow hydraulic jack is used for being erected at the upper end of the supporting cylinder, the pull rod is arranged in the hollow hydraulic jack and the supporting cylinder, at least two ends of the pull rod are provided with threads, the upper end of the pull rod is fixed on an ejector rod of the hollow hydraulic jack in a matched manner with the nut, and the lower end of the pull rod is used for being fixedly connected with the upper end of the guide vane big-end shaft sleeve.
Furthermore, a nut is fixed at the upper end of the guide vane big-end shaft sleeve, the lower end of the pull rod is in threaded connection with the nut, the pull rod is conveniently connected to the upper end of the guide vane big-end shaft sleeve, and the guide vane big-end shaft sleeve is conveniently pulled out.
Furthermore, the upper end of the guide vane big-end shaft sleeve is provided with a screw hole, the lower end of the pull rod is in threaded connection with the screw hole, and the screw hole can be plugged by a screw when not in use.
Further, step 3 includes cleaning rust and oil dirt of the guide vane big end shaft sleeve, so that the vane big end shaft can smoothly rotate.
Further, step 4 includes installing guide vane large-end shaft sleeves back and adjusting gaps of guide vane end faces.
Further, step 4 comprises the step of installing the guide vane crank arm again, and the step of connecting the guide vane crank arm and the control ring connecting rod again.
The invention has the beneficial effects that:
1. in the maintenance method, the limiting pin detacher, the guide vane crank arm detacher and the jackscrew and blade big end shaft sleeve detacher are uniformly distributed with supporting points or pulling-out connecting points, so that the stress of parts in all directions is uniform, the parts are not easy to damage, and the safety of workers is ensured.
2. Because the bearing is soaked in water for a long time, the corrosion is serious, the friction force between each part is large, the force required for disassembling the parts is applied through the hollow hydraulic jack, the labor capacity can be reduced, the disassembling efficiency is improved, the disassembling time is shortened, and the disassembling difficulty is reduced.
3. By the method, the guide vane bearing and the guide vane big-end shaft sleeve can be detached from the bearing seat, the sealing ring is convenient to replace, and the fault rate of water leakage caused by flanging and shearing damage of the sealing ring is reduced.
Drawings
Fig. 1 is a schematic structural view of an outer guide ring part of a water turbine to be overhauled.
Fig. 2 is a schematic view of the spacing pin remover according to the present invention.
FIG. 3 is a schematic view of a vane crank arm puller according to the present invention.
Fig. 4 is a schematic structural view of the support frame of fig. 3 welded to a guide vane crank arm.
Fig. 5 is a schematic view of the present invention for removing a sleeve cover using a jack screw.
FIG. 6 is a schematic view of the present invention employing jackscrews to remove the vane bearing.
FIG. 7 is a sectional view of a guide vane big end shaft sleeve detacher used in the present invention.
Reference numbers in the figures: 1. an outer guide ring; 2. a control ring link; 3. a guide vane crank arm; 4. a spacing pin; 5. a crank arm outer cover; 6. pulling out the pin cylinder; 7. a hollow hydraulic jack; 8. a pull rod; 9. a nut; 10. a hydraulic pump; 11. a support frame; 111. a support plate; 112. supporting legs; 12. a gasket; 13. a guide vane big end pivot; 14. a bearing seat; 15. a guide vane bearing; 16. a shaft sleeve cover; 17. carrying out top thread; 18. a jackscrew hole; 19. a screw hole; 20. a guide vane big end shaft sleeve; 201. an inner sleeve of the shaft sleeve; 202. the shaft sleeve is sleeved; 21. a V-shaped sealing ring; 22. an O-shaped sealing ring; 23. a support cylinder.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the specific embodiments in the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the outer guide ring 1 of the water turbine is provided with a plurality of guide vane crank arms 3 and control ring connecting rods 2, one end of each guide vane crank arm 3 is hinged to the control ring connecting rod 2, the other end of each guide vane crank arm is connected with a guide vane big end pivot 13 in the outer guide ring 1, the guide vane crank arms 3 need to be detached when a guide vane shaft sleeve is overhauled, and the guide vane big end shaft sleeve 20 sleeved outside the guide vane big end pivot 13 is taken out.
Referring to fig. 2 to 7, the invention provides a method for overhauling a large-head shaft sleeve of a guide vane of a water turbine, which comprises the following steps:
firstly, detaching a guide vane big head shaft sleeve 20 from a water turbine, wherein the guide vane crank arm 3 and the control ring connecting rod 2 are detached and separated firstly when the step is implemented; then, a limiting pin 4 puller is adopted to detach the limiting pin 4 between the guide vane crank arm 3 and the guide vane, the limiting pin 4 puller is fixedly connected with the end part of the limiting pin 4, upward force is applied to pull out the limiting pin 4, and the crank arm outer cover 5 is taken down; then, a guide vane crank arm 3 detacher is adopted to detach the guide vane crank arm 3, the guide vane crank arm 3 detacher is fixed on the outer wall of the guide vane crank arm 3, and pulling force which is uniformly distributed is applied on the outer wall of the guide vane crank arm 3 to pull the guide vane crank arm 3 out of the guide vane big end pivot 13; then, the jackscrew 17 is adopted to sequentially disassemble the shaft sleeve cover 16 and the guide vane bearing 15, a plurality of jackscrews 17 are screwed into the jackscrew holes 18 of the shaft sleeve cover 16 or the guide vane bearing 15, and the shaft sleeve cover 16 and the guide vane bearing 15 move upwards along the jackscrew 17 and are separated from the guide vane big end pivot 13; and finally, extracting the guide vane big-end shaft sleeve 20 from the detached guide vane bearing 15 by adopting a guide vane big-end shaft sleeve 20 detacher, applying uniformly distributed supporting force to the upper end of the guide vane bearing 15 by the guide vane big-end shaft sleeve 20 detacher, and applying a plurality of uniformly distributed pulling forces to the upper end of the guide vane big-end shaft sleeve 20 to separate the guide vane big-end shaft sleeve 20 from the guide vane bearing 15. By using the method, the guide vane big head shaft sleeve 20 can be quickly detached, the detaching time is reduced, the detaching difficulty is reduced, and parts are not easy to damage.
Secondly, cleaning the surface of the guide vane big end shaft sleeve 20 disassembled in the previous step, measuring the size of the guide vane big end shaft sleeve 20, judging whether the guide vane big end shaft sleeve 20 is worn or not according to the measured size, if so, entering step 3, and if not, entering step 4; specifically, the guide vane large-head shaft sleeve 20 includes a shaft sleeve inner sleeve 201 and a shaft sleeve outer sleeve 202, the shaft sleeve inner sleeve 201 is disposed in the shaft sleeve outer sleeve 202, and the sizes of the shaft sleeve inner sleeve 201 and the shaft sleeve outer sleeve 202 are required during measurement.
And thirdly, repairing or replacing a new guide vane big-end shaft sleeve 20, replacing the sealing ring, cleaning the guide vane big-end shaft sleeve 20 with smaller abrasion loss and then continuously using the guide vane big-end shaft sleeve 20, replacing the guide vane big-end shaft sleeve with large abrasion loss, and cleaning rust and oil dirt of the guide vane big-end shaft sleeve 20 during cleaning. The sealing rings comprise a V-shaped sealing ring 21 and an O-shaped sealing ring 22 which are arranged in the guide vane bearing 15.
Fourthly, the guide vane big-end shaft sleeve 20 is installed again, the guide vane big-end shaft sleeve 20 is installed back into the guide vane bearing 15, the gap of the end face of the guide vane is adjusted, then the guide vane bearing 15 is installed back into the bearing seat 14, the shaft sleeve cover 16 is sleeved, the guide vane crank arm 3 is installed back, and finally the guide vane crank arm 3 and the control ring connecting rod 2 are fixedly connected.
The structures and the overhauling and using methods of the limit pin detacher, the guide vane crank arm detacher and the guide vane big-end shaft sleeve detacher in the first step are described below.
The spacing pin detacher comprises a pin pulling cylinder 6, a pull rod 8, a nut 9, a hollow hydraulic jack 7 and a hydraulic pump 10, wherein two ends of the pin pulling cylinder 6 are opened, one end of the pin pulling cylinder is used for supporting the hollow hydraulic jack 7, the other end of the pin pulling cylinder is supported on a guide vane crank arm 3, the pull rod 8 is arranged in the pin pulling cylinder 6 and the hollow hydraulic jack 7, threads are arranged on the pull rod 8, one end of the pull rod 8 extends out of the hollow hydraulic jack 7 and is fixed on a mandril of the hollow hydraulic jack 7 in a matching way with the nut 9, the hollow hydraulic jack 7 is connected with the hydraulic pump 10 through a guide pipe, the hydraulic pump 10 can be a manual hydraulic pump which is convenient to control and can pull out the spacing pin slowly, the other end of the pull rod 8 is used for being fixedly connected with the spacing pin 4 on the guide vane crank arm 3, specifically, the pull rod 8 is welded and fixed with the spacing pin 4, the hollow hydraulic jack 7 applies upward force to the pull rod 8 to pull out the spacing pin 4, after the completion, the separation pull rod 8 and the limiting pin 4 need to be welded and separated, and welding slag is removed.
The guide vane crank arm detacher comprises a support frame 11, gaskets 12, hollow hydraulic jacks 7 and hydraulic pumps 10, wherein the support frame 11 comprises support legs 112 and support plates 111, the support legs 112 comprise a plurality of support legs 112 which are uniformly distributed and fixed on the periphery of the lower end face of the support plates 111, the lower ends of the support legs 112 are used for being fixedly connected with guide vane crank arms 3, specifically, the support legs 112 comprise three support legs, the lower ends of the support legs are respectively and fixedly welded on the outer walls of the guide vane crank arms 3, the hollow hydraulic jacks 7 are arranged below the support plates 111, the gaskets 12 are arranged between the hollow hydraulic jacks 7 and the support plates 111, the hollow hydraulic jacks 7 are connected with the hydraulic pumps 10 through pipes, the hollow hydraulic jacks 7 are controlled to be jacked up to the support plates 111 through the hydraulic pumps 10, the quantity of the gaskets 12 is increased between the hollow hydraulic jacks 7 and the support plates 111 to pull out the guide vane crank arms 3, and the guide vane crank arms 3 and the support legs 112 need to be separated by welding after the detaching, and removing welding slag.
The guide vane large-head shaft sleeve detacher comprises a supporting cylinder 23, a pull rod 8, a nut 9, a hollow hydraulic jack 7 and a hydraulic pump 10, wherein the supporting cylinder 23 is used for being supported on a guide vane bearing 15, the pull rod 8, the nut 9 and the hollow hydraulic jack 7 comprise at least two parts which are uniformly distributed on the circumference of a guide vane large-head shaft sleeve 20, the hollow hydraulic jack 7 is used for being erected at the upper end of the supporting cylinder 23, two through holes used for passing through the pull rod 8 are formed in the upper end of the supporting cylinder 23, the hollow hydraulic jack 7 is placed above the through holes, the pull rod 8 is placed in the hollow hydraulic jack 7 and the supporting cylinder 23, threads are arranged at least at two ends of the pull rod 8, the upper end of the pull rod 8 is matched with the nut 9 and fixed on an ejector rod of the hollow hydraulic jack 7, and the lower end of the pull rod 8 is fixedly connected with the upper end of the guide vane large-head shaft sleeve 20. The upper end of the guide vane big-end shaft sleeve 20 is fixed with a nut 9, the lower end of the pull rod 8 is in threaded connection with the nut 9, the nut 9 is fixedly welded with the guide vane big-end shaft sleeve 20, or a screw hole 19 can be formed in the upper end of the guide vane big-end shaft sleeve 20, and the lower end of the pull rod 8 is in threaded connection with the screw hole 19. The hollow hydraulic jack 7 drives the pull rod 8 upwards to pull the guide vane big end shaft sleeve 20 out of the guide vane bearing 15.
Claims (10)
1. The method for overhauling the shaft sleeve of the big end of the guide vane of the water turbine is characterized by comprising the following steps of:
(1) from the hydraulic turbine on with the stator major part axle sleeve dismantlement, include:
(1.1) disassembling and separating the guide vane crank arm and the control ring connecting rod;
(1.2) disassembling a limiting pin between a guide vane crank arm and a guide vane by adopting a limiting pin disassembling device, wherein the limiting pin disassembling device is fixedly connected with the end part of the limiting pin, applies force upwards to pull out the limiting pin, and takes down the outer cover of the crank arm;
(1.3) adopting a guide vane arm detacher to detach the guide vane arm, fixing the guide vane arm detacher on the outer wall of the guide vane arm, and applying uniformly distributed pulling force on the outer wall of the guide vane arm to pull the guide vane arm out of the guide vane big end pivot;
(1.4) sequentially disassembling a shaft sleeve cover and a guide vane bearing by adopting jackscrews, screwing a plurality of jackscrews into jackscrew holes of the shaft sleeve cover or the guide vane bearing, and moving the shaft sleeve cover and the guide vane bearing upwards along the jackscrews and separating from a guide vane big-end pivot;
(1.5) extracting the guide vane big-end shaft sleeve from the guide vane bearing disassembled in the step (1.4) by adopting a guide vane big-end shaft sleeve detacher, applying uniformly distributed supporting force to the upper end of the guide vane bearing by the guide vane big-end shaft sleeve detacher, applying a plurality of uniformly distributed pulling forces to the upper end of the guide vane big-end shaft sleeve, and separating the guide vane big-end shaft sleeve from the guide vane bearing;
(2) cleaning the surface of the guide vane big-end shaft sleeve detached in the step (1.5), measuring the size of the guide vane big-end shaft sleeve, judging whether the guide vane big-end shaft sleeve is worn or not according to the measured size, if so, entering the step (3), and if not, entering the step (4);
(3) repairing or replacing a new guide vane big end shaft sleeve and replacing the sealing ring;
(4) and (5) returning to install the guide vane big end shaft sleeve.
2. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 1, wherein: the limiting pin detacher in the step (1.2) comprises a pin pulling cylinder, a pull rod, a nut, a hollow hydraulic jack and a hydraulic pump, wherein two ends of the pin pulling cylinder are open, one end of the pin pulling cylinder is used for supporting the hollow hydraulic jack, the other end of the pin pulling cylinder is supported on the guide vane crank arm, the pull rod is arranged in the pin pulling cylinder and the hollow hydraulic jack, threads are arranged on the pull rod, one end of the pull rod extends out of the hollow hydraulic jack and is fixed on a top rod of the hollow hydraulic jack in a matched mode with the nut, the hollow hydraulic jack is connected with a hydraulic pump guide pipe, and the other end of the pull rod is used for being fixedly connected with the limiting pin on the guide vane crank arm.
3. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 1, wherein: the stator turning arm detacher in step (1.3) comprises a support frame, a gasket, a hollow hydraulic jack and a hydraulic pump, wherein the support frame comprises a plurality of support legs and support plates, the support legs are uniformly fixed on the periphery of the lower end face of the support plates, the lower ends of the support legs are fixedly connected with the stator turning arm, the hollow hydraulic jack is arranged below the support plates, the gasket is placed between the hollow hydraulic jack and the support plates, the hollow hydraulic jack is connected with a hydraulic pump pipe, the support plates are upwards supported by the hollow hydraulic jack through hydraulic pump control, and the quantity of the gasket is increased between the hollow hydraulic jack and the support plates so as to extract the stator turning arm.
4. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 1, wherein: the guide vane big-end shaft sleeve detacher in the step (1.5) comprises a supporting cylinder, a pull rod, a nut, a hollow hydraulic jack and a hydraulic pump, wherein the supporting cylinder is used for being supported on a guide vane bearing, the pull rod, the nut and the hollow hydraulic jack comprise at least two parts which are uniformly distributed on the circumference of the guide vane big-end shaft sleeve, the hollow hydraulic jack is used for being erected at the upper end of the supporting cylinder, the pull rod is arranged in the hollow hydraulic jack and the supporting cylinder, at least two ends of the pull rod are provided with threads, the upper end of the pull rod is fixed on an ejector rod of the hollow hydraulic jack in a matched manner with the nut, and the lower end of the pull rod is fixedly connected with the upper end of the guide vane big-end shaft sleeve.
5. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 4, wherein: the upper end of the guide vane big-head shaft sleeve is fixed with a nut, and the lower end of the pull rod is in threaded connection with the nut.
6. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 4, wherein: the upper end of the guide vane big-end shaft sleeve is provided with a screw hole, and the lower end of the pull rod is in threaded connection with the screw hole.
7. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 1, wherein: and (3) cleaning rust and oil dirt of the guide vane large-head shaft sleeve.
8. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 1, wherein: and (4) reinstalling the guide vane large-head shaft sleeve and adjusting the gap of the guide vane end face.
9. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 8, wherein: and the step (4) comprises the step of installing the guide vane turning arm again.
10. The turbine guide vane stub shaft sleeve overhauling method as set forth in claim 8, wherein: and the step (4) comprises connecting the guide vane crank arm and the control ring connecting rod in a back-assembling manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111154338.9A CN113798778A (en) | 2021-09-29 | 2021-09-29 | Method for overhauling large-head shaft sleeve of guide vane of water turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111154338.9A CN113798778A (en) | 2021-09-29 | 2021-09-29 | Method for overhauling large-head shaft sleeve of guide vane of water turbine |
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| CN113798778A true CN113798778A (en) | 2021-12-17 |
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| CN202111154338.9A Pending CN113798778A (en) | 2021-09-29 | 2021-09-29 | Method for overhauling large-head shaft sleeve of guide vane of water turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192936A (en) * | 2022-07-19 | 2022-10-18 | 广西桂冠电力股份有限公司大化水力发电总厂 | Hydraulic turbine overhauls safety auxiliary device |
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| CN213165148U (en) * | 2020-07-07 | 2021-05-11 | 贵州乌江清水河水电开发有限公司 | Water turbine crank arm pulling-out device |
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| 李成家, 杜润团, 井永强, 林云海, 尹海成: "水轮机导叶轴套的更换处理", 西北电力技术, no. 04, pages 39 - 40 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192936A (en) * | 2022-07-19 | 2022-10-18 | 广西桂冠电力股份有限公司大化水力发电总厂 | Hydraulic turbine overhauls safety auxiliary device |
| CN115192936B (en) * | 2022-07-19 | 2023-10-20 | 广西桂冠电力股份有限公司大化水力发电总厂 | Safety auxiliary device for overhauling water turbine |
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