CN115488819A - Device and method for disassembling and assembling thrust bearing pad of spring support column type thrust bearing - Google Patents
Device and method for disassembling and assembling thrust bearing pad of spring support column type thrust bearing Download PDFInfo
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- CN115488819A CN115488819A CN202211079680.1A CN202211079680A CN115488819A CN 115488819 A CN115488819 A CN 115488819A CN 202211079680 A CN202211079680 A CN 202211079680A CN 115488819 A CN115488819 A CN 115488819A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012546 transfer Methods 0.000 claims abstract description 31
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 75
- 239000010723 turbine oil Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009795 derivation Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 240000009087 Crescentia cujete Species 0.000 description 1
- 235000005983 Crescentia cujete Nutrition 0.000 description 1
- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
A device and a method for disassembling and assembling thrust pads of a spring support column type thrust bearing comprise an inner track, a middle track, an outer track and a transfer trolley for supporting the thrust pads to move on the tracks; the inner track comprises a positioning track at one side and a limiting track at the other side, the positioning track and the limiting track are respectively connected with one end of the middle track, and the other end of the middle track is butted with the outer track; the transfer trolley comprises a left fixed wheel carrier, a right fixed wheel carrier, a left supporting wheel and a right supporting wheel, and in a use state, the left fixed wheel carrier, the right fixed wheel carrier, the left supporting wheel and the right supporting wheel are independently arranged on the side surface of the thrust tile; the thrust bearing further comprises a top bearing bush bolt for jacking the thrust bearing bush. Through the structure, the thrust bearing shoes can be quickly, conveniently and safely disassembled and assembled, a convenient environment is created for cleaning the oil grooves of the unit, and a reliable guarantee is provided for overhauling or installing the unit.
Description
Technical Field
The invention relates to the technical field of installation and maintenance of a hydraulic generator unit, in particular to a device and a method for disassembling and assembling a thrust pad of a spring support column type thrust bearing.
Background
After the adjustment of the axis of the hydraulic generator set is completed, the thrust bearing needs to be pulled out, the spring column is taken out to thoroughly clean the oil groove, and the damage to the subsequent operation of the set caused by the existence of particles such as iron scraps in the region where the spring column is located is avoided. The height of a spring column of a thrust pad of a 85 ten thousand kilowatt hydroelectric generating set is 52mm, the height of a rotor at the top of the generating set is 0-20mm, the thrust pad is difficult to extract, and in order to ensure the smooth assembly and disassembly of the thrust pad, the inventor designs a set of thrust pad assembly and disassembly method for the upper rail of the single-side top pad by combining the structural characteristics of a thrust bearing, and the method is successfully applied in the assembly and disassembly process of the thrust pad of the generating set.
Although CN 102463447A discloses a "thrust bearing shoe dismounting device and dismounting method thereof", it is suitable for elastic oil tank type thrust bearings and not suitable for spring strut type thrust bearings. And the thrust pad is pulled out from the elastic oil tank of the thrust bearing by force, and the risk of scratching the bottom surface of the thrust pad is higher. In the dismouting in-process, need to set up the hoisting point and just can drag out thrust tile with the calabash, need set up a plurality of fixed points at the oil groove round, it is inconvenient to use.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of exist among the above-mentioned background art of solution provides a spring support column thrust bearing thrust tile dismouting device, swiftly conveniently carries out the dismouting to the thrust tile safely, cleans for the unit oil groove and creates convenient environment, overhauls or installs for the unit and provides reliable guarantee.
The invention aims to solve another technical problem that: the method for dismounting and mounting the thrust bearing pad by adopting the device for dismounting and mounting the thrust bearing pad of the spring support column type thrust bearing is provided.
In order to achieve the technical features, the invention is realized as follows: a spring support column type thrust bearing thrust pad dismounting device comprises an inner track, a middle track, an outer track and a transfer trolley for supporting a thrust pad to move on each track; the inner track comprises a positioning track at one side and a limiting track at the other side, the positioning track and the limiting track are respectively connected with one end of the middle track, and the other end of the middle track is butted with the outer track; the transfer trolley comprises a left fixed wheel carrier, a right fixed wheel carrier, a left supporting wheel and a right supporting wheel, and in a use state, the left fixed wheel carrier, the right fixed wheel carrier, the left supporting wheel and the right supporting wheel are independently arranged on the side surface of the thrust tile; the thrust bearing further comprises a top bearing bush bolt for jacking the thrust bearing bush.
The positioning track comprises a first track supporting plate, a limiting strip is arranged on one side of the upper portion of the first track supporting plate, one end of the first track supporting plate is vertically connected with a first connecting plate, a first connecting hole is formed in the first connecting plate, and the positioning track is connected with the middle track through the first connecting plate; the bottom of the first track supporting plate is provided with a positioning step and a first supporting body for supporting the first track supporting plate.
The limiting rail comprises a second rail supporting plate, a limiting groove is formed in the upper portion of the second rail supporting plate along the length direction, a second connecting plate is vertically connected to one end of the second rail supporting plate, a second connecting hole is formed in the second connecting plate, and the limiting rail is connected with the middle rail through the second connecting plate; and a second support body for supporting the second track support plate is arranged at the bottom of the second track support plate.
The middle rail comprises a plurality of middle rail seats, and a middle positioning rail and a middle limiting rail which are arranged at two ends of the middle rail seats; the middle rail seat is provided with first adjusting threaded holes at two sides of the middle positioning rail and the middle limiting rail; and one end of the middle positioning track and one end of the middle limiting track are respectively provided with a third connecting plate, the third connecting plate is provided with a third connecting hole, and the middle track is fixedly connected with the positioning track and the limiting track through the third connecting plate.
The external track comprises a plurality of external track seats, and an external positioning track and an external limiting track which are arranged at two ends of each external track seat; second adjusting threaded holes are formed in the outer rail seat and located on two sides of the outer positioning rail and the outer limiting rail; one end of the external positioning track and one end of the external limiting track are respectively provided with a fourth connecting plate, and the fourth connecting plate is provided with a fourth connecting hole; one ends of the external positioning track and the external limiting track, which are close to the middle track, are respectively provided with an extension section; in a use state, the external track is connected with the thrust oil window through the fourth connecting plate, and the extension section extends through the thrust oil window to be in butt joint with the middle track.
And the middle part of the external track is provided with a plurality of hydraulic jacks for jacking the thrust pads, and the hydraulic jacks are arranged on the external track seat.
The left fixed wheel carrier and the right fixed wheel carrier are of symmetrical structures; the left fixing wheel frame comprises a supporting rod, a first bolt is arranged at one end of the supporting rod, the first bolt extends out of the side face of the supporting rod, a first roller is arranged at the lower end of the first bolt, and a first fixing hole is formed in the side face, extending out of the first bolt, of the other end of the supporting rod.
The left supporting wheel and the right supporting wheel are of symmetrical structures; the left supporting wheel comprises an L-shaped support, a second fixing hole is formed in one side of the support, a waist round hole is formed in the other side of the support, an adjusting bolt is arranged at the upper end of the second roller, and the adjusting screw penetrates through the waist round hole to be fixedly connected with the support through a nut.
The top tile bolt comprises a top tile block, and a second bolt is arranged on one side of the top tile block.
A method for dismounting thrust pads by adopting a spring support column type thrust bearing thrust pad dismounting device comprises the following steps:
s1, dismounting a thrust pad:
s1.1 top rotor preparation: withdrawing the air brake, erecting a dial indicator to monitor the jacking amount of the thrust head, the rotor braking ring and the water turbine shaft, connecting a top rotor oil pump pipeline, starting a top rotor oil pump, and maintaining the pressure of the top rotor oil pump to 2/3 of the rated pressure of the top rotor for 10 minutes without leakage and then releasing the pressure;
s1.2 jacking rotor: starting a high-pressure oil load reduction system, starting a top rotor oil pump, monitoring the jacking amount of a rotating part, and closing the high-pressure oil load reduction system when the jacking amount of a thrust head reaches 1 to 2mm; when the lifting amount of a water turbine shaft reaches 18-20mm, a top rotor oil pump is closed, and a brake is put into the top rotor oil pump for locking;
s1.3, oil discharge: connecting oil discharge equipment of a derivation oil tank, starting an oil discharge pump, and discharging turbine oil in the oil tank;
s1.4, dismounting a thrust pad: removing a side window of the thrust oil groove, removing a branch pipe of the high-pressure oil load reduction system, a branch pipe of the thrust pad cooling oil and a circumferential limiting device of the thrust pad, and cleaning the thrust oil groove;
s1.5, jacking a thrust pad: installing a top tile bolt, installing a hydraulic jack at the lower part of the top tile block, slowly jacking the thrust tile, and stopping jacking the thrust tile when the distance between the upper surface of the outer side of the thrust tile and the mirror plate is 0.5-1.5 mm;
s1.6 assembling a track system: installing a positioning track below the left side of the thrust pad, enabling a positioning step of the positioning track to be attached to the spring column, and placing a limiting track below the right side of the thrust pad; placing the middle rail at the rear part of the thrust pad, adjusting the position of the middle rail to align the middle rail with the positioning rail, and installing a connecting bolt of the positioning rail and the middle rail; adjusting the limiting rail to align the limiting rail with the middle rail, and installing a connecting bolt of the middle rail and the limiting rail; adjusting the outer rail to align the outer rail with the middle rail, and fixing the outer rail on the thrust oil window;
s1.7, mounting of a transfer trolley: installing a left supporting wheel and a right supporting wheel on two sides of the tail of the thrust pad, respectively inserting first bolts of a left fixing wheel carrier and a right fixing wheel carrier into pin holes on two sides of the thrust pad, aligning a first fixing hole with a bolt hole on the thrust pad, and installing bolts for fixing;
s1.8, transferring the thrust pad to a designated position: dismantling a jack and a top tile bolt on the thrust tile, installing a lifting lug at the tail part of the thrust tile, pulling the thrust tile out to an external track, installing the lifting lug at the head part of the thrust tile, hoisting the thrust tile by using a gantry crane, dismantling a transfer trolley on the thrust tile, and transferring the thrust tile to a specified position;
s1.9, dismantling the inner rail, the middle rail, the outer rail and the spring columns;
s1.10, repeating the steps of 1-9, and removing all thrust pads;
s2, mounting a thrust pad:
s2.1, assembling the inner rail, the middle rail and the outer rail, and assembling a rail system according to S1.6;
s2.2, the thrust pad is lifted on the rail: hoisting the thrust pad by using a gantry crane, cleaning the surface of the thrust pad, installing a thrust pad transfer trolley, hoisting the thrust pad to the upper part of an external track, enabling rollers of a left fixed wheel carrier, a right fixed wheel carrier, a left supporting wheel and a right supporting wheel to fall into the track, removing a lifting lug at the head part of the thrust pad, and coating turbine oil on the surface of the thrust pad;
s2.3, mounting a thrust pad: pushing the thrust pad into the mounting position;
s2.4, dismantling the transfer trolley and the track system: installing a thrust tile jacking bolt and a jack, jacking the thrust tile, stopping jacking the thrust tile when the distance between the upper surface of the outer side of the thrust tile and the mirror plate surface is 0.5 to 1.5mm, dismantling a track system and a transfer trolley, dismantling the jack and the tile jacking bolt, and completing the installation of the thrust tile;
s2.5, repeating S2.1-S2.4 and installing all the thrust pads.
The invention has the following beneficial effects:
1. the thrust pad dismounting device is assembled by parts, the whole tool is light in weight and convenient to transfer, and after the thrust pad is jacked up, the track system and the thrust pad transfer trolley are convenient to dismount. Through this dismouting device, can swiftly conveniently carry out the dismouting to thrust tile safely, clean the convenient environment of creation for the unit oil groove, overhaul or install for the unit and provide reliable guarantee.
2. Through independent positioning track and spacing track, when dismouting thrust tile, just can conveniently place the below of thrust tile to can carry on spacingly to the wheel of transporting the dolly, make the transportation dolly remove along the spacing groove.
3. The middle part of the external track is provided with a plurality of hydraulic jacks used for jacking thrust tiles, the hydraulic jacks are arranged on the external track seat and used for jacking the thrust tiles, the jacking thrust tiles are convenient to jack, the thrust tiles are checked or hoisted, and the trolley can be conveniently dismounted and transported.
4. The independent left fixed wheel carrier and the independent right fixed wheel carrier can be conveniently connected and fixed with the thrust pad through the first bolt and the first fixing hole; independent left supporting wheel and right supporting wheel through the second fixed orifices, can be convenient be connected fixedly with the thrust tile to make the thrust tile conveniently promote.
5. The jacking tile bolt is used for jacking the thrust tile, the hydraulic jack is arranged at the bottom of the jacking tile block, and the tail of the thrust tile is jacked up through the hydraulic jack, so that the positioning track and the limiting track are convenient.
Drawings
Fig. 1 is a schematic perspective view of the inner rail, the middle rail and the outer rail of the present invention.
FIG. 2 is a schematic view of the three-dimensional structure of the inner track, the middle track, the outer track and the transfer trolley.
Fig. 3 is a schematic perspective view of the present invention mounted on both sides of a thrust oil window in use.
Fig. 4 is a schematic view of the overall structure of the present invention in use.
Fig. 5 is a schematic view of a perspective structure above the positioning rail according to the present invention.
Fig. 6 is a schematic view of a bottom view perspective structure of the positioning rail according to the present invention.
Fig. 7 is a schematic view of a perspective structure above the limit rail according to the present invention.
Fig. 8 is a schematic view of a bottom view perspective structure of the limit track according to the present invention.
Fig. 9 is a schematic perspective view of the middle rail of the present invention.
Fig. 10 is a perspective view of the external track according to the present invention.
FIG. 11 is a perspective view of the left and right fixed wheel frames of the present invention.
FIG. 12 is a perspective view of the left and right fixed wheel frames of the present invention from another perspective.
FIG. 13 is a perspective view of the left and right support wheels of the present invention.
Fig. 14 is a schematic perspective view of the top tile latch of the present invention.
FIG. 15 is a perspective view of the thrust pad of the present invention when used in conjunction with removal or installation.
In the figure: the positioning device comprises a positioning track 1, a first track supporting plate 11, a limiting strip 12, a first connecting plate 13, a first connecting hole 14, a positioning step 15 and a first supporting body 16;
the limiting rail 2, a second rail supporting plate 21, a limiting groove 22, a second connecting plate 23, a second connecting hole 24 and a second supporting body 25;
the middle rail 3, the middle rail seat 31, the first adjusting threaded hole 32, the middle positioning rail 33, the middle limiting rail 34, the third connecting plate 35 and the third connecting hole 36;
the external rail 4, the external rail seat 41, the second adjusting threaded hole 42, the external positioning rail 43, the external limiting rail 44, the hydraulic jack 45, the fourth connecting plate 46 and the fourth connecting hole 47; an extension section 48;
the device comprises a left fixed wheel frame 5, a right fixed wheel frame 6, a support rod 51, a first bolt 52, a first roller 53 and a first fixed hole 54;
a left supporting wheel 7, a right supporting wheel 8, a support 71, a second fixing hole 72, a kidney-shaped hole 73 and a second roller 74;
a top tile bolt 9, a top tile block 91 and a second bolt 92;
a thrust oil window 10 and a thrust pad 20.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1-15, a spring support type thrust bearing thrust pad dismounting device comprises an inner rail, a middle rail 3, an outer rail 4, and a transfer trolley for supporting a thrust pad 20 to move on each rail; the inner track comprises a positioning track 1 on one side and a limiting track 2 on the other side, the positioning track 1 and the limiting track 2 are respectively connected with one end of a middle track 3, and the other end of the middle track 3 is butted with an outer track 4; the transfer trolley comprises a left fixed wheel carrier 5, a right fixed wheel carrier 6, a left supporting wheel 7 and a right supporting wheel 8, and in a use state, the left fixed wheel carrier 5, the right fixed wheel carrier 6, the left supporting wheel 7 and the right supporting wheel 8 are independently arranged on the side surface of the thrust pad 20; a top shoe latch 9 for jacking up the thrust shoe 20 is also included. Through the structure, the thrust bearing shoes can be quickly, conveniently and safely disassembled and assembled, a convenient environment is created for cleaning the oil grooves of the unit, and a reliable guarantee is provided for overhauling or installing the unit.
The positioning track 1 is connected with the middle track 3 through bolts, the limiting track 2 is connected with the middle track 3 through bolts, the external track 4 is fixed on the thrust oil window 10 and is in butt joint with the middle track 3, and the positioning track 1, the limiting track 2, the middle track 3 and the external track 4 form a track system. The left fixed wheel carrier 5, the right fixed wheel carrier 6, the left supporting wheel 7 and the right supporting wheel 8 form a thrust tile transfer trolley. The top tile bolt 9 is used for jacking the thrust tile 20 on one side, and when the jack is used, one end of the top tile bolt 9 is inserted into the thrust tile 20, the bottom of the other end of the top tile bolt is provided with a jack, and the thrust tile 20 is jacked up through the jack. The whole thrust bearing dismounting device is connected by parts, is convenient to transfer and is convenient to dismount on site.
Referring to fig. 5-6, the positioning rail 1 includes a first rail support plate 11, a limit strip 12 is disposed on one side of the upper portion of the first rail support plate 11, and the thrust shoe 20 plays a role in limiting the transportation cart during the dismounting process. The one end of first track backup pad 11 is connected with first connecting plate 13 perpendicularly, is equipped with first connecting hole 14 on the first connecting plate 13, and location track 1 is through first connecting plate 13 and 3 bolted connection of middle part track. The bottom of the first rail support plate 11 is provided with a positioning step 15 for attaching a spring post to position the rail system. The first support body 16 is used to support the first rail support plate 11, so that the first rail support plate 11 can bear the weight of the thrust shoe 20.
Referring to fig. 7-8, the limiting rail 2 comprises a second rail support plate 21, and a limiting groove 22 is formed in the upper portion of the second rail support plate 21 along the length direction to limit the thrust shoe transfer trolley. One end of the second rail supporting plate 21 is vertically connected with a second connecting plate 23, a second connecting hole 24 is formed in the second connecting plate 23, and the limiting rail 2 is connected with the middle rail 3 through the second connecting plate 23 in a bolt mode. The bottom of the second rail support plate 21 is provided with a second support body 25 for supporting the second rail support plate 21.
Through independent positioning track 1 and spacing track 2, when dismouting thrust tile 20, just can conveniently place the below of thrust tile 20 to can carry on spacingly to the wheel of transporting the dolly, make the transportation dolly remove along spacing groove 22.
Referring to fig. 9, the middle rail 3 includes a plurality of middle rail seats 31, and middle positioning rails 33 and middle stopper rails 34 installed at both ends of the middle rail seats 31. The middle rail seat 31 is provided with first adjusting threaded holes 32 at two sides of the middle positioning rail 33 and the middle limiting rail 34 for adjusting the level of the rails. One end of the middle positioning track 33 and one end of the middle limiting track 34 are respectively provided with a third connecting plate 35, the third connecting plate 35 is provided with a third connecting hole 36, and the middle track 3 is respectively fixed with the positioning track 1 and the limiting track 2 through the third connecting plate 35 by bolt connection.
Referring to fig. 10, the outer rail 4 includes four outer rail seats 41, and outer positioning rails 43 and outer stopper rails 44 installed at both ends of the outer rail seats 41. The outer rail seat 41 is provided with second adjusting screw holes 42 at both sides of the outer positioning rail 43 and the outer limiting rail 44 for adjusting the rail level. One end of the external positioning rail 43 and one end of the external limiting rail 44 are respectively provided with a fourth connecting plate 46, and a fourth connecting hole 47 is formed in the fourth connecting plate 46; the outer positioning rail 43 and the outer limiting rail 44 are respectively provided with an extension section 48 at one end close to the middle rail 3; in a use state, the outer rail 4 is in bolted connection with the thrust oil window 10 through the fourth connecting plate 46, and the extension section 48 extends through the thrust oil window 10 and is in butt joint with the middle rail 3. Like middle part track 3 structure, outside location track 43 is equipped with spacing, and outside spacing track 44 is equipped with the race for transport the dolly to the thrust tile and carry on spacingly.
Further, referring to fig. 10, four hydraulic jacks 45 for jacking up the thrust shoes 20 are installed at the middle portion of the outer rail 4, and the hydraulic jacks 45 are installed on the outer rail base 41. The lifting trolley is used for jacking the thrust bearing shoes 20, can stably and safely check and process the thrust bearing shoes 20 after jacking the thrust bearing shoes 20, can conveniently lift and transport, and can also be conveniently dismounted and transported.
Referring to fig. 11 and 12, the left fixed wheel frame 5 and the right fixed wheel frame 6 are symmetrical. The left fixed wheel frame 5 comprises a supporting rod 51, one end of the supporting rod 51 is provided with a first bolt 52, the first bolt 52 extends out of the side surface of the supporting rod 51, and the first bolt 52 is used for being inserted into the thrust pad 20 to bear the weight of the thrust pad. The lower end of the first bolt 52 is provided with a first roller 53, and the other end of the support rod 51 is provided with a first fixing hole 54 at the side where the first bolt 52 extends out, for mounting the left fixed wheel carrier 5 or the right fixed wheel carrier 6 on the thrust shoe. Specifically, the support rod 51 is made of angle steel. The independent left fixed wheel frame 5 and the independent right fixed wheel frame 6 can be conveniently connected and fixed with the thrust pad 20 through the first bolt 52 and the first fixing hole 54.
Referring to fig. 13, the left support wheel 7 and the right support wheel 8 are of a symmetrical structure. The left supporting wheel 7 comprises an L-shaped support 71, a second fixing hole 72 is formed in one side of the support 71, a waist circular hole 73 is formed in the other side of the support 71, an adjusting bolt is arranged at the upper end of the second roller 74, and the adjusting screw penetrates through the waist circular hole 73 to be connected and fixed with the support 71 through a nut. The support 71 is connected with the thrust shoe through a second fixing hole 72 by a bolt, and the second roller 74 is adjusted by a waist-round hole 73 to move on the roller way stably in a guiding way. The independent left supporting wheel 7 and the independent right supporting wheel 8 can be conveniently connected and fixed with the thrust tile 20 through the second fixing hole 72.
Referring to fig. 14, the top tile latch 9 includes a top tile block 91, and a second latch 92 is provided at one side of the top tile block 91 for being inserted into a front end pin hole of the thrust tile 20. The top tile bolt 9 is used for jacking the thrust tile 20, a hydraulic jack is arranged at the bottom of the top tile block 91, and the tail part of the thrust tile 20 is jacked up through the hydraulic jack.
Example two:
referring to fig. 15, a method for dismounting a thrust pad by using a spring strut type thrust bearing thrust pad dismounting device includes a dismounting step and an installing step:
s1, dismounting a thrust pad:
s1.1 top rotor preparation: withdrawing the air brake, erecting a dial indicator to monitor the jacking amount of the thrust head, the rotor braking ring and the water turbine shaft, connecting a top rotor oil pump pipeline, starting a top rotor oil pump, and maintaining the pressure of the top rotor oil pump to 2/3 of the rated pressure of the top rotor for 10 minutes without leakage and then releasing the pressure;
s1.2 jacking rotor: starting a high-pressure oil load reduction system, starting a top rotor oil pump, monitoring the jacking amount of a rotating part, and closing the high-pressure oil load reduction system when the jacking amount of a thrust head reaches 1 to 2mm; when the lifting amount of a water turbine shaft reaches 18-20mm, a top rotor oil pump is closed, a brake is put into the top rotor oil pump for locking, and top rotor operation is completed;
s1.3, oil discharge: connecting oil discharge equipment of a derivation oil tank, starting an oil discharge pump, discharging turbine oil in the oil tank, closely watching the oil level of the oil tank to descend in the oil discharge process, and closing the oil discharge pump when the oil level indicator is 0;
s1.4, dismounting a thrust pad: removing a side window of the thrust oil groove, removing parts which influence the extraction of the thrust bearing, such as a high-pressure oil load reduction system branch pipe, a thrust bearing cooling oil branch pipe, a thrust bearing circumferential limiting device and the like, and cleaning the thrust oil groove until no impurities such as turbine oil, slag and the like exist in a personnel operation area;
s1.5, jacking a thrust pad: installing a top tile bolt 9, installing a hydraulic jack at the lower part of the top tile block 91, slowly jacking the thrust tile 20, and stopping jacking the thrust tile 20 when the distance between the upper surface of the outer side of the thrust tile 20 and the mirror plate is 0.5-1.5 mm;
s1.6 assembling a track system: installing a positioning track 1 below the left side of a thrust pad 20, attaching a positioning step 15 of the positioning track 1 to a spring column, and placing a limiting track 2 below the right side of the thrust pad 20; placing the middle rail 3 at the rear part of the thrust pad 20, adjusting the position of the middle rail 3 to align the middle rail 3 with the positioning rail 1, and installing a connecting bolt between the positioning rail 1 and the middle rail 3; adjusting the limiting track 2 to align the limiting track 2 with the middle track 3, and installing a connecting bolt between the middle track 3 and the limiting track 2; adjusting the outer track 4 to align the outer track 4 with the middle track 3, and fixing the outer track 4 on the thrust oil window 10;
s1.7, mounting of a transfer trolley: installing a left supporting wheel 7 and a right supporting wheel 8 on two sides of the tail part of the thrust pad 20, respectively inserting first bolts 52 of a left fixed wheel carrier 5 and a right fixed wheel carrier 6 into pin holes on two sides of the thrust pad 20, aligning a first fixing hole 54 with a bolt hole on the thrust pad, and installing bolts for fixing;
s1.8, transferring the thrust pad to a designated position: dismantling a jack and a top tile bolt 9 on a thrust tile 20, installing 2 lifting lugs at the tail of the thrust tile, pulling out the thrust tile 20 to an external track 4, installing 1 lifting lug at the head of the thrust tile 20, hoisting the thrust tile 20 by using a gantry crane, dismantling a transfer trolley on the thrust tile 20, and transferring the thrust tile 20 to a specified position;
s1.9, removing the inner rail, the middle rail 3, the outer rail 4 and the spring columns;
s1.10, repeating the steps of 1-9, and removing all the thrust pads.
S2, mounting a thrust pad:
s2.1, assembling the inner rail, the middle rail 3 and the outer rail 4, and assembling a rail system according to the step S1.6;
s2.2, the thrust pad is lifted on the rail: hoisting the thrust pad 20 by using a gantry crane, cleaning the surface of the thrust pad 20, installing a thrust pad transfer trolley, hoisting the thrust pad 20 to the upper part of an external track 4, enabling rollers of a left fixed wheel frame 5, a right fixed wheel frame 6, a left supporting wheel 7 and a right supporting wheel 8 to fall into the track, removing a lifting lug at the head of the thrust pad 20, and smearing turbine oil on the surface of the thrust pad;
s2.3, mounting a thrust pad: pushing the thrust pad into the mounting position;
s2.4, dismantling the transfer trolley and the track system: installing a thrust tile jacking bolt 9 and a jack, jacking a thrust tile 20, stopping jacking the thrust tile 20 when the distance between the upper surface of the outer side of the thrust tile 20 and the mirror plate surface is 0.5-1.5 mm, dismantling a track system and a transfer trolley, dismantling the jack and the jacking tile bolt 9, and completing the installation of the thrust tile;
s2.5 repeating S2.1-S2.4, installing all thrust pads.
The working principle of the invention is as follows: when the thrust tile transfer trolley is positioned on the track, a gap of 5 to 7mm exists between the thrust tile 20 and the spring column, a gap of 3 to 4mm exists between the thrust tile 20 and the track, and the thrust tile can be freely pushed on the thrust tile transfer trolley. After the rotor is jacked, the distance between the thrust tile 20 and the mirror plate is about 17mm, and after the thrust tile is jacked by jacking the jacking tile bolt 9 through a jack, the positioning track 1 and the limiting track 2 can be easily installed.
Claims (10)
1. The utility model provides a spring support column thrust bearing thrust tile dismouting device which characterized in that: comprises an inner track, a middle track (3), an outer track (4) and a transfer trolley for supporting a thrust pad (20) to move on each track; the inner track comprises a positioning track (1) on one side and a limiting track (2) on the other side, the positioning track (1) and the limiting track (2) are respectively connected with one end of the middle track (3), and the other end of the middle track (3) is butted with the outer track (4); the transfer trolley comprises a left fixed wheel carrier (5), a right fixed wheel carrier (6), a left supporting wheel (7) and a right supporting wheel (8), and in a use state, the left fixed wheel carrier (5), the right fixed wheel carrier (6), the left supporting wheel (7) and the right supporting wheel (8) are independently arranged on the side surface of the thrust tile (20); the device also comprises a top tile bolt (9) used for jacking the thrust tile (20).
2. The device for dismounting and mounting thrust pads of a spring-loaded column type thrust bearing according to claim 1, wherein: the positioning track (1) comprises a first track supporting plate (11), a limiting strip (12) is arranged on one side of the upper portion of the first track supporting plate (11), one end of the first track supporting plate (11) is vertically connected with a first connecting plate (13), a first connecting hole (14) is formed in the first connecting plate (13), and the positioning track (1) is connected with the middle track (3) through the first connecting plate (13); the bottom of the first track supporting plate (11) is provided with a positioning step (15) and a first supporting body (16) for supporting the first track supporting plate (11).
3. The device for mounting and dismounting the thrust pad of the spring-strut type thrust bearing according to claim 1, wherein: the limiting track (2) comprises a second track supporting plate (21), a limiting groove (22) is formed in the upper portion of the second track supporting plate (21) along the length direction, a second connecting plate (23) is perpendicularly connected to one end of the second track supporting plate (21), a second connecting hole (24) is formed in the second connecting plate (23), and the limiting track (2) is connected with the middle track (3) through the second connecting plate (23); and a second support body (25) for supporting the second rail support plate (21) is arranged at the bottom of the second rail support plate (21).
4. The device for dismounting and mounting thrust pads of a spring-loaded column type thrust bearing according to claim 1, wherein: the middle rail (3) comprises a plurality of middle rail seats (31), middle positioning rails (33) and middle limiting rails (34) which are arranged at two ends of each middle rail seat (31); first adjusting threaded holes (32) are formed in the middle rail seat (31) and located on two sides of the middle positioning rail (33) and the middle limiting rail (34); and one ends of the middle positioning track (33) and the middle limiting track (34) are respectively provided with a third connecting plate (35), a third connecting hole (36) is formed in the third connecting plate (35), and the middle track (3) is respectively connected and fixed with the positioning track (1) and the limiting track (2) through the third connecting plate (35).
5. The device for dismounting and mounting thrust pads of a spring-loaded column type thrust bearing according to claim 1, wherein: the external rail (4) comprises a plurality of external rail seats (41), external positioning rails (43) and external limiting rails (44) which are arranged at two ends of each external rail seat (41); second adjusting threaded holes (42) are formed in the outer rail seat (41) and located on two sides of the outer positioning rail (43) and the outer limiting rail (44); one end of the external positioning track (43) and one end of the external limiting track (44) are respectively provided with a fourth connecting plate (46), and a fourth connecting hole (47) is formed in the fourth connecting plate (46); one ends of the external positioning track (43) and the external limiting track (44) close to the middle track (3) are respectively provided with an extension section (48); in a use state, the outer rail (4) is connected with the thrust oil window (10) through the fourth connecting plate (46), and the extension section (48) extends through the thrust oil window (10) and is in butt joint with the middle rail (3).
6. The device for dismounting and mounting thrust pads of a spring-loaded column thrust bearing according to claim 5, wherein: the middle part of outside track (4) is installed a plurality of hydraulic jack (45) that are used for jacking thrust tile (20), hydraulic jack (45) are installed on outside track seat (41).
7. The device for dismounting and mounting thrust pads of a spring-loaded column type thrust bearing according to claim 1, wherein: the left fixed wheel carrier (5) and the right fixed wheel carrier (6) are of symmetrical structures; the left fixing wheel frame (5) comprises a supporting rod (51), a first bolt (52) is arranged at one end of the supporting rod (51), the first bolt (52) extends out of the side face of the supporting rod (51), a first roller (53) is arranged at the lower end of the first bolt (52), and a first fixing hole (54) is formed in the side face, extending out of the first bolt (52), of the other end of the supporting rod (51).
8. The device for dismounting and mounting thrust pads of a spring-loaded column type thrust bearing according to claim 1, wherein: the left supporting wheel (7) and the right supporting wheel (8) are of symmetrical structures; the left supporting wheel (7) comprises an L-shaped support (71), a second fixing hole (72) is formed in one side of the support (71), a waist round hole (73) is formed in the other side of the support (71), an adjusting bolt is arranged at the upper end of a second roller (74), and the adjusting screw penetrates through the waist round hole (73) and is connected and fixed with the support (71) through a nut.
9. The device for dismounting and mounting thrust pads of a spring-loaded column type thrust bearing according to claim 1, wherein: the top tile bolt (9) comprises a top tile block (91), and a second bolt (92) is arranged on one side of the top tile block (91).
10. A method for dismounting a thrust pad by using the device for dismounting a thrust pad of a spring-loaded thrust bearing according to any one of claims 1 to 9, comprising the steps of dismounting and mounting:
s1, dismounting a thrust pad:
s1.1 top rotor preparation: withdrawing the air brake, erecting a dial indicator to monitor the jacking amount of the thrust head, the rotor braking ring and the water turbine shaft, connecting a top rotor oil pump pipeline, starting a top rotor oil pump, and maintaining the pressure of the top rotor oil pump to 2/3 of the rated pressure of the top rotor for 10 minutes without leakage and then releasing the pressure;
s1.2 jacking rotor: starting a high-pressure oil load reduction system, starting a top rotor oil pump, monitoring the jacking amount of a rotating part, and closing the high-pressure oil load reduction system when the jacking amount of a thrust head reaches 1 to 2mm; when the lifting amount of a water turbine shaft reaches 18-20mm, a top rotor oil pump is closed, and a brake is put into the top rotor oil pump for locking;
s1.3, oil discharge: connecting oil discharge equipment of a derivation oil tank, starting an oil discharge pump, and discharging turbine oil in the oil tank;
s1.4, dismounting a thrust pad: removing a side window of the thrust oil groove, removing a branch pipe of the high-pressure oil load reduction system, a branch pipe of the thrust pad cooling oil and a circumferential limiting device of the thrust pad, and cleaning the thrust oil groove;
s1.5, jacking a thrust pad: installing a top tile bolt (9), installing a hydraulic jack at the lower part of a top tile block (91), slowly jacking the thrust tile (20), and stopping jacking the thrust tile (20) when the distance between the upper surface of the outer side of the thrust tile (20) and the mirror plate is 0.5-1.5 mm;
s1.6 assembling a track system: the positioning track (1) is arranged below the left side of the thrust pad (20), the positioning step (15) of the positioning track (1) is attached to the spring column, and the limiting track (2) is arranged below the right side of the thrust pad (20); placing the middle rail (3) on the outer side of the thrust tile (20), adjusting the position of the middle rail (3) to align the middle rail (3) with the positioning rail (1), and installing a connecting bolt of the positioning rail (1) and the middle rail (3); adjusting the limiting track (2) to align the limiting track (2) with the middle track (3), and installing a connecting bolt between the middle track (3) and the limiting track (2); adjusting the outer track (4) to align the outer track (4) with the middle track (3), and fixing the outer track (4) on the thrust oil window (10);
s1.7, mounting of a transfer trolley: installing a left supporting wheel (7) and a right supporting wheel (8) on two sides of the tail of the thrust tile (20), respectively inserting first bolts (52) of a left fixing wheel carrier (5) and a right fixing wheel carrier (6) into pin holes on two sides of the thrust tile (20), aligning a first fixing hole (54) with a bolt hole on the thrust tile, and fixing through a mounting bolt;
s1.8, transferring the thrust pad to a designated position: dismantling a jack and a top tile bolt (9) on a thrust tile (20), installing a lifting lug at the tail part of the thrust tile, pulling out the thrust tile (20) to an external track (4), installing the lifting lug at the head part of the thrust tile (20), hoisting the thrust tile (20) by using a gantry crane, dismantling a transfer trolley on the thrust tile (20), and transferring the thrust tile (20) to a specified position;
s1.9, dismantling the inner rail, the middle rail (3), the outer rail (4) and the spring column;
s1.10, repeating S1-S9, and removing all thrust pads;
s2, mounting a thrust pad:
s2.1, assembling the inner rail, the middle rail (3) and the outer rail (4) into a rail system according to S1.6;
s2.2, the thrust pad is lifted on the rail: hoisting a thrust pad (20) by using a gantry crane, cleaning the surface of the thrust pad (20), installing a thrust pad transfer trolley, hoisting the thrust pad (20) to the upper part of an external track (4), enabling rollers of a left fixed wheel carrier (5), a right fixed wheel carrier (6), a left supporting wheel (7) and a right supporting wheel (8) to fall into the track, removing a head lifting lug of the thrust pad (20), and smearing turbine oil on the surface of the thrust pad;
s2.3, mounting a thrust pad: pushing the thrust pad into the mounting position;
s2.4, dismantling the transfer trolley and the rail system: installing a thrust tile jacking pin (9) and a jack, jacking a thrust tile (20), stopping jacking the thrust tile (20) when the distance between the upper surface of the outer side of the thrust tile (20) and the mirror plate surface is 0.5-1.5 mm, dismantling a track system and a transfer trolley, dismantling the jack and the jacking tile pin (9), and completing thrust tile installation;
s2.5, repeating S2.1-S2.4 and installing all the thrust pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211079680.1A CN115488819B (en) | 2022-09-05 | 2022-09-05 | Device and method for dismounting thrust bush of spring strut type thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211079680.1A CN115488819B (en) | 2022-09-05 | 2022-09-05 | Device and method for dismounting thrust bush of spring strut type thrust bearing |
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| CN115488819A true CN115488819A (en) | 2022-12-20 |
| CN115488819B CN115488819B (en) | 2024-04-16 |
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| CN202211079680.1A Active CN115488819B (en) | 2022-09-05 | 2022-09-05 | Device and method for dismounting thrust bush of spring strut type thrust bearing |
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| CN115488819B (en) | 2024-04-16 |
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