CN105583794B - Turbine rotor rolling wheel support - Google Patents
Turbine rotor rolling wheel support Download PDFInfo
- Publication number
- CN105583794B CN105583794B CN201610118528.8A CN201610118528A CN105583794B CN 105583794 B CN105583794 B CN 105583794B CN 201610118528 A CN201610118528 A CN 201610118528A CN 105583794 B CN105583794 B CN 105583794B
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- Prior art keywords
- rotor
- roller
- rolling wheel
- journal
- turbine rotor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/06—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of trestle type
Abstract
The present invention provides a kind of turbine rotor rolling wheel support, including base, the turning rolls above base and two back-up roller wheels being symmetrical set, and two back-up roller wheels are installed in rotation in turning rolls；After rotor is placed on turbine rotor rolling wheel support, two back-up roller wheels are located at the left and right sides of rotor journal respectively and the outer peripheral face of back-up roller wheel is in contact with the outer peripheral face of rotor journal, back-up roller wheel can be rotated along the vertical radial line of rotor journal, and back-up roller wheel can rock back and forth along the horizontal radial line of rotor journal.After rotor is placed on the turbine rotor rolling wheel support being oppositely arranged before and after two, realize that back-up roller wheel is rotated and rocked back and forth automatically automatically to the pressure of back-up roller wheel by rotor itself, so that the outer peripheral face of back-up roller wheel and the outer peripheral face of rotor journal are always linear contact lay, avoid producing a contact between the two, so as to eliminate stress concentration phenomenon, it is to avoid do the outer peripheral face and destruction rotor of hair rotor journal.
Description
Technical field
The present invention relates to steam turbine and turbine component auxiliary mould field, more particularly to a kind of turbine rotor rolling
Wheel support.
Background technology
Steam turbine is the rotary power machinery that the energy of steam is converted to mechanical work, also known as steam turbine, is modern
Most widely used prime mover in thermal power plant, has the advantages that single-machine capacity is big, efficiency high, long lifespan.Steam turbine is main
It is made up of two aspects of rotating part and stationary part, wherein, rotating part includes rotor, impeller, movable vane piece, shaft coupling etc.,
Stationary part includes cylinder, dividing plate, static cascade, packing, bearing etc..At present, the rotor of large-size steam turbine, generator etc. has been weighed
It is maximum up to 300 tons up to hundred tons；Meanwhile, domestic main force's generating set is mostly 600,000 kilowatts to 1,000,000 thousand built nearly ten years
Watt new unit, after being continuously run through the more than ten years, these units progress into overhaul time, wherein, the cylinder of steam turbine, turn
The maintenance of sub, various steam valves is the most important thing.
When the rotor to steam turbine is manufactured or is repaired, as shown in Figure 1, it is necessary to which rotor is placed on two roller branch
Frame upper rotary is operated., shall not be the outer of rotor because the cost of rotor is very expensive, therefore when manufacturing or repairing rotor
Side face does hair.More widespread practice is in the prior art：On rotor journal install one be divided into above and below two halves protective case,
And protective case is rolled on roller.But, after turning round spreading, protective case is deformed into oval ring by annular, so as to lead
Protective case dismounting is caused not get off.If protective case is disassembled firmly from rotor, it is easy to the outer peripheral face of rotor doing hair, from
And cause the secondary damage of rotor；And after protective case is disassembled firmly, it is impossible to secondary to use, the outer layer of protective case is steel, internal layer
It is bronze, therefore the cost of protective case is also costly, if protective case can not be recycled, causes the very big wave of resource
Take.
Meanwhile, with continuing to develop for technology, steam turbine also does bigger and bigger, therefore rotor is also increasingly weighed, in rotor journal
Upper installation protective case can not be adapted to existing large scale rotor, so gradually adopting the armature spindle in two ends of rotor in recent years
Respectively placed at neck and two are designed with a rolling wheel support, each rolling wheel support along the distribution of rotor journal radial symmetric and is located at
The nylon roller of rotor journal both sides, nylon roller is directly rolled on rotor journal.But, it is another using being occurred in that after rolling wheel support
Outer the problem of：The contact line of nylon roller outer peripheral face and rotor journal outer peripheral face can not be coincide well, i.e., nylon roller is with turning
Sub- axle journal is changed into a contact by linear contact lay, so as to cause, than more serious stress concentration, not only to make a mess of nylon roller, goes back pole
It is possible to do hair rotor journal.
Further, as shown in figure 1, again thick rotor be also with amount of deflection, therefore the center section of rotor sink, place
What two rolling wheel supports at the rotor journal of rotor rear and front end were put puts down again, and the contact line of nylon roller and rotor journal is not yet
It coincide；In addition, as shown in Fig. 2 two rolling wheel supports are after five or six meters on the ground, two rolling wheel supports can not possibly be complete
Point-blank, nylon roller is also resulted in coincide well with rotor journal.And for the rotor more than 100 tons, people
Power can not be adjusted fine motion to it, and not right on left and right directions after adjustment up and down, or fore-and-aft direction after the adjustment of left and right
On it is not right, therefore nylon roller and rotor journal contact during, the generation of stress concentration phenomenon is had all the time, as long as stopping
That larger stress concentration has just produced destruction to rotor.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of turbine rotor roller branch
Back-up roller wheel on frame, the rolling wheel support can automatic floating so that back-up roller wheel outer peripheral face and rotor journal outer peripheral face
Contact line automatically coincide.
To achieve the above object, the present invention provides a kind of turbine rotor rolling wheel support, is located at for supporting before and after rotor
Rotor journal at two ends, the turbine rotor rolling wheel support includes base, the turning rolls above base and two
The back-up roller wheel being symmetrical set, two back-up roller wheels are installed in rotation in turning rolls；When rotor is placed on into vapour
After on turbine wheel rolling wheel support, two back-up roller wheels are respectively positioned at the left and right sides of rotor journal and the periphery of back-up roller wheel
Face is in contact with the outer peripheral face of rotor journal, and the back-up roller wheel can be rotated along the vertical radial line of rotor journal, back-up roller wheel edge
The horizontal radial line of rotor journal can rock back and forth.
Preferably, axis of the back-up roller wheel along rotor journal can not vacillate now to the left, now to the right.
Further, in addition to wear collar bush in the base, be located in collar bush and rotatable rotor and
Be installed in be installed with the spheric seating of main shaft set upper side, the turning rolls about one extension main shaft, the main shaft from top to bottom according to
It is secondary to be located in spheric seating, collar bush and rotor；The upper end of the spheric seating is provided with concave spherical surface, and the main shaft is provided with a ball
Face, the lower end in the sphere portion is provided with the convex spherical being engaged with concave spherical surface；Offered in the rotor along rotor journal
The strip grooves of extension before and after axis, the lower end of the main shaft is provided with before the wag being located in strip grooves, the wag
The space that rocks back and forth being oppositely arranged before and after two is formed between two ends and the rear and front end of strip grooves afterwards.
Preferably, the wag coordinates for gap in the lateral direction with strip grooves.
Further, the relation in the sphere portion between the outer diameter D 1 of convex spherical and the outer diameter D 2 of back-up roller wheel is：D1
=0.4D2~0.5D2.
Further, offer high-pressure oil passage in the main shaft, the upper end of the high-pressure oil passage provided with high pressure oil inlet,
Lower end is provided with the high pressure oil export extended downward at the convex spherical and concave spherical surface cooperation.
Preferably, the upper surface of the base is provided with a supporter, and the collar bush is from top to bottom located in branch successively
It is to be slidably matched in support body and base and with supporter and base, jack is provided with the base, the jack top arm
Upper surface is in contact with the lower surface of collar bush, and the periphery of the collar bush is threaded with hold-doun nut, the hold-doun nut
Lower surface and the upper surface of supporter lean.
Preferably, the periphery of the hold-doun nut offers multiple rotation breach.
Further, multiple aiding supports are provided between the base and turning rolls.
Preferably, the back-up roller wheel is nylon roller.
Further, the side of the base is fixed with support base, there is for driving rotor fixed placement on the support base
The torsion case of rotation.
As described above, turbine rotor rolling wheel support of the present invention, has the advantages that：
In the application, vertical radial line of two back-up roller wheels along rotor journal is rotated, and two back-up roller wheels are along rotor journal
Horizontal radial line rock back and forth, therefore after rotor is placed on the turbine rotor rolling wheel support being oppositely arranged before and after two, pass through
Rotor itself realizes that back-up roller wheel is rotated and rocked back and forth automatically automatically to the pressure of back-up roller wheel, so that back-up roller wheel
The outer peripheral face of outer peripheral face and rotor journal is always linear contact lay, and then avoids producing a contact between the two, so as to eliminate stress
Concentration phenomenon, it is to avoid do hair rotor journal outer peripheral face and destruction rotor, finally improve repairing rotor, maintenance efficiency and
Quality.
Brief description of the drawings
State diagram when Fig. 1 is rotor maintenance in the prior art.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the structural representation of turbine rotor rolling wheel support in the application.
Fig. 4 be in Fig. 3 A-A to sectional view.
Fig. 5 is B circle enlarged drawings in Fig. 3.
Fig. 6 is turning rolls or the floating principle figure of back-up roller wheel in the application.
Fig. 7 is the use state figure of turbine rotor rolling wheel support in the application.
Component label instructions
1 rotor journal
2 bases
3 turning rolls
4 back-up roller wheels
5 collar bushes
51 sleeve parts
52 gasket part
6 rotors
61 strip grooves
7 spheric seatings
71 concave spherical surfaces
8 main shafts
81 sphere portions
82 convex sphericals
83 wag
84 wave space
9 high-pressure oil passages
91 high pressure oil inlets
92 high pressure oil exports
93 main channels
94 secondary channels
10 supporters
11 jack
12 hold-doun nuts
121 rotate breach
13 aiding supports
131 screw rods
132 top nuts
133 lower nuts
14 support bases
15 torsion casees
16 cases
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to coordinate specification to be taken off
The content shown, so that those skilled in the art is understood with reading, is not limited to enforceable qualifications of the invention, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing the present invention
Under the effect that can be generated and the purpose that can reach, it all should still fall and obtain the model that can cover in disclosed technology contents
In enclosing.Meanwhile, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one " is also only
It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness is altered or modified, without essence
Change under technology contents, when being also considered as enforceable category of the invention.
In following examples, all directions are defined as follows：The bearing of trend of rotor axis is defined as fore-and-aft direction, by rotor
The bearing of trend of vertical radial line is defined as above-below direction in the cross section of axle journal 1, and horizontal radial line in the cross section of rotor journal 1 is prolonged
Stretch direction and be defined as left and right directions；Or, as shown in Figure 1 and Figure 7, the right side of paper is front direction, and the left side of paper is rear
To the front of paper is right direction, and the back side of paper is left direction, and the upside of paper is upper direction, and the downside of paper is lower section
To.In addition, in following examples, each reference axis is defined as follows in the three-dimensional system of coordinate of single turbine rotor rolling wheel support：Will
The bearing of trend of the axis of rotor journal 1 is defined as X-axis, and the bearing of trend of vertical radial line in the cross section of rotor journal 1 is defined as into Z
Axle, Y is defined as by the bearing of trend of horizontal radial line in the cross section of rotor journal 1Axle；Therefore, extend before and after X-axis, Y-axis or so is prolonged
Stretch, extend above and below Z axis.
The application provides a kind of turbine rotor rolling wheel support, when the rotor to steam turbine is overhauled, repaired, in vapour
A turbine rotor rolling wheel support is respectively placed at the rotor journal 1 of turbine wheel rear and front end, as shown in fig. 7, so as to play
Support the effect of turbine rotor.As shown in Figure 3 and Figure 7, the turbine rotor rolling wheel support that the application is related to include base 2,
Turning rolls 3 and two back-up roller wheels 4 being symmetrical set positioned at the top of base 2, two back-up roller wheels 4 are rotatable
Ground is arranged in turning rolls 3；After rotor is placed on turbine rotor rolling wheel support, two back-up roller wheels 4 are located at respectively
The left and right sides of the rotor journal 1 and outer peripheral face of back-up roller wheel 4 is in contact with the outer peripheral face of rotor journal 1, back-up roller wheel 4
Axis is parallel with the axis of rotor journal 1, and the back-up roller wheel 4 can be rotated along the vertical radial line of rotor journal 1, back-up roller wheel
4 can rock back and forth along the horizontal radial line of rotor journal 1 through the intermediate cross-section of back-up roller wheel 4；In other words, two back-up roller wheels 4
It is symmetrical set and can be rotated centered on Z axis centered on Z axis, two back-up roller wheels 4 is rocked back and forth centered on Y-axis,
Y-axis passes through the intermediate cross-section of back-up roller wheel 4.Preferably, axis of the back-up roller wheel 4 along rotor journal 1 can not left and right shake
Pendulum, i.e., back-up roller wheel 4 can not be vacillated now to the left, now to the right centered on X-axis, be overturned to prevent rotation stop from turbine rotor rolling wheel support, institute
The axis for stating rotor journal 1 is the axis of rotor.
In the application, vertical radial line of two back-up roller wheels 4 along rotor journal 1 is rotated, and two back-up roller wheels 4 are along armature spindle
The horizontal radial line of neck 1 rocks back and forth, but axis of two back-up roller wheels 4 along rotor journal 1 can not vacillate now to the left, now to the right, therefore in the application
The floating principle of two back-up roller wheels 4 is：As shown in fig. 6, two back-up roller wheels 4 can float about the z axis (or perhaps rotation),
It can be floated (or perhaps line rocks back and forth centered on Y-axis) around Y-axis, but can not be floated around X-axis (or perhaps can not be with X-axis
Centered on line vacillate now to the left, now to the right).Therefore, when being overhauled or being repaired to rotor, rotor is placed on what is be oppositely arranged before and after two
After on turbine rotor rolling wheel support, realize that back-up roller wheel 4 is automatic about the z axis to the pressure of back-up roller wheel 4 by rotor itself and turn
Dynamic adjustment and the adjustment that rocked back and forth automatically around Y-axis, so that the outer peripheral face of the outer peripheral face of back-up roller wheel 4 and rotor journal 1
It is always linear contact lay, and then avoids producing a contact between the two, so as to eliminates stress concentration phenomenon, it is to avoid do hair rotor journal
1 outer peripheral face and destruction rotor, finally improves repairing rotor, the efficiency and quality of maintenance.
In order to realize in above-mentioned turbine rotor rolling wheel support, two back-up roller wheels 4 float about the z axis, floated around Y-axis but
It can not be floated around X-axis, a kind of preferred embodiment of turbine rotor rolling wheel support presented below.
As shown in Figures 3 to 5, the turbine rotor rolling wheel support also include be located in base 2 collar bush 5, set
In the collar bush 5 and rotatable rotor 6 and the spheric seating 7 for being weldingly fixed on the upper end of collar bush 5, in the turning rolls 3
The main shaft 8 of about one extension is installed with, the main shaft 8 is from top to bottom located in spheric seating 7, collar bush 5 and rotor 6 successively,
The axial direction of main shaft 8 is the bearing of trend of the Z-direction or the vertical radial line of the rotor journal 1；The upper end of the spheric seating 7
Provided with concave spherical surface 71, the main shaft 8 is provided with a sphere portion 81, and the lower end in the sphere portion 81 is provided with what is be engaged with concave spherical surface 71
Convex spherical 82, the center of circle of the concave spherical surface 71 and convex spherical 82 is all on Z axis, i.e., all on the axis of main shaft 8；The rotor
The strip grooves 61 extended along before and after the axis of rotor journal 1 are offered in 6, the lower end of the main shaft 8, which is provided with, is located in strip grooves
Wag 83 in 61, it is relative before and after forming two between the rear and front end of the wag 83 and the rear and front end of strip grooves 61
The space 84 that rocks back and forth set, two are waved the part that space 84 is strip grooves 61.Preferably, the wag 83 and length
Bar groove 61 coordinates for gap in the lateral direction, so, wag 83 is generally in flat.
After in the strip grooves 61 of the insertion rotor 6 of wag 83 of main shaft 8, wag 83 is with strip grooves 61 in left and right directions
It is upper to coordinate for gap so that the left and right sides of the left and right sides of wag 83 and strip grooves 61 fit, therefore wag 83
It can not be vacillated now to the left, now to the right relative to strip grooves 61, therefore, main shaft 8 can not vacillate now to the left, now to the right, so as to realize turning rolls 3 and two back-up rollers
Wheel 4 can not float around X-axis, vacillate now to the left, now to the right.The rear and front end of the wag 83 and the rear and front end of the strip grooves 61 of rotor 6
Between form two before and after the space 84 that rocks back and forth that is oppositely arranged, therefore, wag 83 can rock back and forth relative to strip grooves 61
Pendulum, then mutual cooperation on main shaft 8 between the convex spherical 82 in sphere portion 81 and the concave spherical surface 71 of spheric seating 7 realize turning rolls 3 and
Two back-up roller wheels 4 are floated around Y-axis, rocked back and forth together.Further, wag 83 and the strip grooves 61 of rotor 6 are on a left side
Coordinate in right direction for gap, and rotor 6 is freely rotatable in collar bush 5, therefore, main shaft 8 can turn in collar bush 5
It is dynamic so that main shaft 8 is rotated centered on own axes, so as to realize that turning rolls 3 and two back-up roller wheels 4 are floated, turned about the z axis
It is dynamic.The convex spherical 82 of spherical surface body is engaged with the concave spherical surface 71 of spheric seating 7 in the embodiment, on main shaft 8 can play following effect：
1st, supporting role；2nd, main shaft 8, turning rolls 3 and the three of back-up roller wheel 4 is made synchronously to wave the effect of floating with Y-axis about the z axis.
Preferably, for the ease of rotor 6 is fitted into collar bush 5, as shown in figure 3, the collar bush 5 is by sleeve part 51
Constituted with gasket part 52, the rotor 6 is located at the lower end of sleeve part 51 and coordinated with the gap of sleeve part 51, treats that rotor 6 is filled
After entering in sleeve part 51, pad is being welded on the lower surface of sleeve part 51, outer peripheral face, the sleeve part 51 of the rotor 6
Inner peripheral surface be periphery.Simultaneously as rotor 6 is located at the lower end of collar bush 5, so that positioned at strip grooves 61 and ball
The length of one section of main shaft 8 between the concave spherical surface 71 of face seat 7 is longer, and then limitation main shaft 8 can be made to subtract around the restraint that X-axis is floated
As low as 1/10 or so.
In above-described embodiment, when back-up roller wheel 4 is floated with Y-axis about the z axis, the convex spherical 82 and sphere in the sphere portion 81
There is frictional force, in order to reduce the frictional force, what raising back-up roller wheel 4 was floated with Y-axis about the z axis can between the concave spherical surface 71 of seat 7
By property, in the present embodiment, at least the material selection nitrated steel or hardened steel in sphere portion 81, the material selection of spheric seating 7 on main shaft 8
The minimum phosphor bronze of coefficient of friction, therefore sphere portion 81 and spheric seating 7 will not be engaged, and be easy to the dual floating and adjustment of main shaft 8, and
Its small volume, cost be low, inertia resistance when floating is small.Further, in the sphere portion 81 outer diameter D 1 of convex spherical 82 with
Relation between the outer diameter D 2 of back-up roller wheel 4 is：D1=0.4D2~0.5D2.Specifically, the weight of rotor journal 1 of rotor single head is
P, then when turning rolls 3 floats, active torque J1=P*D2/4=0.25PD2；The convex spherical 82 in sphere portion 81 and spheric seating 7 it is recessed
Coefficient of friction between sphere 71 takes 0.15, then when turning rolls 3 floats, then the convex spherical 82 in sphere portion 81 and spheric seating 7 is recessed
Frictional force torque J2=0.15*P*D1=0.15D1=0.06PD2~0.075PD2 between sphere 71；So, back-up roller wheel 4
Coefficient of reliability γ=J1/J2=0.25PD2/ (0.06PD2~0.075PD2)=3.33 when being floated about the z axis with Y-axis~
4.167.It can thus be appreciated that：Coefficient of reliability γ when back-up roller wheel 4 is floated with Y-axis about the z axis is higher, therefore the periphery of back-up roller wheel 4
It is very good that the outer peripheral face of face and rotor journal 1 coincide, and is always linear contact lay between the two, and stress is uniform, is not in especially big
Stress concentration phenomenon.Therefore, the turbine rotor rolling wheel support that the application is related to can long-term work, therefore the turbine rotor roll
Lathe when wheel support can also be processed as turbine rotor is used, now, and borrowing one small lathe or planker can just be repaiied with car
Packing or blade shroud band of turbine rotor etc.；Turbine rotor is transported back to turbine rotor manufactory car relative to traditional
For the mode repaiied, the application and then can greatly save the maintenance cost of turbine rotor, greatly improve turbine rotor
Maintenance efficiency so that power plant can fulfil the maintenance task of turbine rotor ahead of schedule；This has very great for power plant
Meaning：It is exactly the direct creation millions of members of financial resources because power plant repaiies one day less, it is meant that power plant generates electricity for early one day.
In order to further reduce between the convex spherical 82 in sphere portion 81 and the concave spherical surface 71 of spheric seating 7 have frictional force, carry
The reliability that high back-up roller wheel 4 is floated with Y-axis about the z axis, as shown in Figure 3 and Figure 5, high-pressure oil passage is offered in the main shaft 8
9, the upper end of the high-pressure oil passage 9 is provided with provided with high pressure oil inlet 91, lower end extends downward into the convex spherical 82 and concave spherical surface
High pressure oil export 92 at 71 cooperations, so as to hydraulic oil is delivered at the cooperation of convex spherical 82 and concave spherical surface 71, reduces both
Between frictional force；The hydraulic oil of input has certain pressure simultaneously, moreover it is possible to holds up spherical surface body upwards, is easy to main shaft 8 around Z
Axle and Y-axis are floated, consequently facilitating back-up roller wheel 4 is floated with Y-axis about the z axis.In the present embodiment, as shown in figure 5, the hydraulic oil is logical
Road 9 includes vertically extending main channel 93 and multiple secondary channels 94 extended obliquely out, the lower end of main channel 93 and multiple secondary channels
94 upper end is connected, and the lower end of multiple secondary channels 94 is all extended at the cooperation of convex spherical 82 and concave spherical surface 71.Meanwhile, in order to
Ensure main shaft 8 can about the z axis with Y-axis float, as shown in figure 3, between the main shaft 8 and spheric seating 7, the lower end of wag 83 with
Gap is there are between the gasket part 52 of collar bush 5.
Preferably, as shown in figure 3, the upper surface of the base 2 is provided with a supporter 10, the collar bush 5 is by up to
Under be located in successively in supporter 10 and base 2 and be to be slidably matched with supporter 10 and base 2, therefore collar bush 5 is in support
It can be moved up and down in body 10 and base 2, jack 11, the upper surface of the top arm of jack 11 and main shaft are provided with the base 2
The lower surface of set 5 is in contact, and the periphery of the collar bush 5 is threaded with hold-doun nut 12, the lower surface of the hold-doun nut 12
Leant with the upper surface of supporter 10.After rotor is placed on two turbine rotor rolling wheel supports, also need to adjust steamer
Machine rotor rolling wheel support supports the height of turbine rotor, that is, adjusts the height of turning rolls 3；Now, driving jack 11 is acted,
Then the top arm of jack 11 is ejected upwards, so that collar bush 5, main shaft 8, turning rolls 3, back-up roller wheel 4 and turbine rotor is same
Step ground upwards ejection, then hold-doun nut 12 is separated with supporter 10, afterwards rotary fixing screw cap 12, according to rotor maintenance when institute
The bearing height needed adjusts upper-lower position of the hold-doun nut 12 on collar bush 5, loosens jack 11 or removes jack 11,
Then collar bush 5, main shaft 8, turning rolls 3, back-up roller wheel 4 and turbine rotor are synchronously moved down under gravity, until
The lower surface of hold-doun nut 12 and the upper surface of supporter 10 lean, so as to complete the adjustment of the height of turning rolls 3 so that rotor
In horizontal state.The supporter 10 can be made into integral piece with base 2, or be welded and fixed.
Preferably, as shown in figure 3, the periphery of the hold-doun nut 12 offers multiple rotation breach 121, consequently facilitating rotation
Turn hold-doun nut 12.Multiple aiding supports 13 are provided between the base 2 and turning rolls 3, improve what turbine rotor was supported
Reliability.In the present embodiment, the structure of the aiding support 13 is：Aiding support 13 is by screw rod 131, top nut 132 and lower spiral shell
Mother 133 is constituted, and the upper end of screw rod 131 is threadedly coupled with the lower surface of turning rolls 3, top nut 132 is threadedly coupled with screw rod 131,
And leant with the lower surface of turning rolls 3, lower nut 133 is threadedly coupled with screw rod 131, and is leant with the upper surface of base 2.
Preferably, the back-up roller wheel 4 is nylon roller, and the hardness of nylon roller is less than the hardness of turbine rotor, i.e., less than rotor
The hardness of axle journal 1, therefore can play a part of protecting rotor journal 1, when having impurity on rotor outer periphery face or the outer peripheral face of back-up roller wheel 4
When, impurity can be embedded into nylon roller, without being embedded into rotor journal 1.As shown in figure 3, can also be in turning rolls 3
Top one case 16 for being made up of lucite is installed, place dust etc. and stick on back-up roller wheel 4 and turbine rotor.
Further, when car repaiies turbine rotor, turbine rotor is in the state rotated, and driving steam turbine rotor turns
Dynamic mode has two kinds：1st, manual actuation, loads handwheel and transmission mechanism, artificial rotation hand wheel, passes through rotating mechanism driving branch
Support roller 4 is rotated, so as to drive rotor to rotate；2nd, motorized motions, load torsion case 15, the output end of torsion case 15 and rotor
End is connected, so as to drive rotor to rotate.As shown in fig. 7, the side of the base 2 is welded with support base 14, the branch
Fixed placement has the torsion case 15 for driving rotor to rotate on support seat 14, and therefore, the application can be avoided because torsion case 15 is pacified
Fill and hammer into foundation bolt on the ground and on the ground of power plant, remove foundation bolt after turbine rotor maintenance terminates
Operation, meeting power plant does not allow the requirement of random mounting foot bolt.
In addition, the attachment structure between back-up roller wheel 4 and turning rolls 3 can be：First, two are fixed with turning rolls 3 to turn
Axle, back-up roller wheel 4 is arranged in rotating shaft by bearing, therefore back-up roller wheel 4 can rotate around the axis, realize back-up roller wheel 4 relative to
Turning rolls 3 is rotatable；2nd, back-up roller wheel 4 is fixed in rotating shaft, and the two ends of rotating shaft are arranged on turning rolls 3 by bearing, therefore branch
Support roller 4 and rotating shaft is rotatable relative to turning rolls 3 together.
In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. a kind of turbine rotor rolling wheel support, for supporting the rotor journal (1) being located at rotor rear and front end, its feature exists
In：The turbine rotor rolling wheel support includes base (2), the turning rolls (3) above base (2) and two or so
Symmetrically arranged back-up roller wheel (4), two back-up roller wheels (4) are installed in rotation in turning rolls (3)；Placed when by rotor
After on turbine rotor rolling wheel support, two back-up roller wheels (4) are respectively positioned at the left and right sides of rotor journal (1) and support
The outer peripheral face of roller (4) is in contact with the outer peripheral face of rotor journal (1), and the back-up roller wheel (4) can be along rotor journal (1)
Vertical radial line is rotated, and back-up roller wheel (4) can rock back and forth along the horizontal radial line of rotor journal (1) so that back-up roller wheel (4)
The outer peripheral face of outer peripheral face and rotor journal (1) is linear contact lay；Also include be located in base (2) collar bush (5), be located at main shaft
Cover in (5) and rotatable rotor (6) and the spheric seating (7) for being installed in collar bush (5) upper end, in the turning rolls (3)
The main shaft (8) of about one extension is installed with, the main shaft (8) is from top to bottom located in spheric seating (7), collar bush (5) and turned successively
In kinetoplast (6)；The upper end of the spheric seating (7) is provided with concave spherical surface (71), and the main shaft (8) is provided with a sphere portion (81), should
The lower end in sphere portion (81) is provided with the convex spherical (82) being engaged with concave spherical surface (71)；Edge is offered in the rotor (6) to turn
The strip grooves (61) of extension before and after the axis of sub- axle journal (1), the lower end of the main shaft (8), which is provided with, to be located in strip grooves (61)
Wag (83), it is relative before and after forming two between the rear and front end of the wag (83) and the rear and front end of strip grooves (61)
The space that rocks back and forth (84) set；The back-up roller wheel (4) is nylon roller.
2. turbine rotor rolling wheel support according to claim 1, it is characterised in that：The back-up roller wheel (4) is along rotor
The axis of axle journal (1) can not vacillate now to the left, now to the right.
3. turbine rotor rolling wheel support according to claim 1, it is characterised in that：The wag (83) and strip grooves
(61) coordinate in the lateral direction for gap.
4. the turbine rotor rolling wheel support stated according to claim 1, it is characterised in that：Convex spherical on the sphere portion (81)
(82) the relation between outer diameter D 1 and the outer diameter D 2 of back-up roller wheel (4) is：D1=0.4D2~0.5D2.
5. turbine rotor rolling wheel support according to claim 1, it is characterised in that：Height is offered in the main shaft (8)
Pressure oil passage (9), the upper end of the high-pressure oil passage (9) is described convex provided with extending downward into provided with high pressure oil inlet (91), lower end
High pressure oil export (92) at sphere (82) and concave spherical surface (71) cooperation.
6. turbine rotor rolling wheel support according to claim 1, it is characterised in that：On the upper surface of the base (2)
Provided with a supporter (10), the collar bush (5) be from top to bottom located in successively in supporter (10) and base (2) and with branch
Support body (10) and base (2) are to be slidably matched, and jack (11) is provided with the base (2), jack (11) top arm
Upper surface is in contact with the lower surface of collar bush (5), and the periphery of the collar bush (5) is threaded with hold-doun nut (12), should
The lower surface of hold-doun nut (12) and the upper surface of supporter (10) lean.
7. turbine rotor rolling wheel support according to claim 6, it is characterised in that：The periphery of the hold-doun nut (12)
Offer multiple rotation breach (121).
8. turbine rotor rolling wheel support according to claim 1, it is characterised in that：The base (2) and turning rolls (3)
Between be provided with multiple aiding supports (13).
9. turbine rotor rolling wheel support according to claim 1, it is characterised in that：The side of the base (2) is fixed
There is support base (14), fixed placement has the torsion case (15) for driving rotor to rotate on the support base (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118528.8A CN105583794B (en) | 2016-03-02 | 2016-03-02 | Turbine rotor rolling wheel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118528.8A CN105583794B (en) | 2016-03-02 | 2016-03-02 | Turbine rotor rolling wheel support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105583794A CN105583794A (en) | 2016-05-18 |
| CN105583794B true CN105583794B (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610118528.8A Active CN105583794B (en) | 2016-03-02 | 2016-03-02 | Turbine rotor rolling wheel support |
Country Status (1)
| Country | Link |
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| CN (1) | CN105583794B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336874B (en) * | 2018-04-17 | 2024-02-06 | 南京汽轮电机(集团)有限责任公司 | Generator rotor puts rotary device |
| CN109802529B (en) * | 2019-03-28 | 2024-02-13 | 江苏核电有限公司 | Exciter rotor false tile supported by roller |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027159A (en) * | 1958-10-24 | 1962-03-27 | Yates Plant Ltd | Roller apparatus for supporting and rotating cylindrical objects |
| DE20019461U1 (en) * | 2000-11-13 | 2001-08-02 | Heine Uwe | Roller jack system for storing and turning heavy turned parts |
| CN2850845Y (en) * | 2005-12-02 | 2006-12-27 | 郭泉生 | Steam turbine and generator rotor bracket |
| CN201214239Y (en) * | 2008-05-12 | 2009-04-01 | 上海宝冶建设有限公司 | Support with rotary rotor |
| CN201868975U (en) * | 2010-11-04 | 2011-06-15 | 哈尔滨北方电力开发有限公司 | Electric roller bracket of steam turbine rotor |
| CN204396907U (en) * | 2014-12-25 | 2015-06-17 | 天水星火机床有限责任公司 | Lathe auxiliary support apparatus |
| CN204818750U (en) * | 2015-08-03 | 2015-12-02 | 山西北方机械制造有限责任公司 | Floating support |
| CN205394466U (en) * | 2016-03-02 | 2016-07-27 | 上海海业机电设备有限公司 | Novel turbine rotor gyro wheel support |
-
2016
- 2016-03-02 CN CN201610118528.8A patent/CN105583794B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027159A (en) * | 1958-10-24 | 1962-03-27 | Yates Plant Ltd | Roller apparatus for supporting and rotating cylindrical objects |
| DE20019461U1 (en) * | 2000-11-13 | 2001-08-02 | Heine Uwe | Roller jack system for storing and turning heavy turned parts |
| CN2850845Y (en) * | 2005-12-02 | 2006-12-27 | 郭泉生 | Steam turbine and generator rotor bracket |
| CN201214239Y (en) * | 2008-05-12 | 2009-04-01 | 上海宝冶建设有限公司 | Support with rotary rotor |
| CN201868975U (en) * | 2010-11-04 | 2011-06-15 | 哈尔滨北方电力开发有限公司 | Electric roller bracket of steam turbine rotor |
| CN204396907U (en) * | 2014-12-25 | 2015-06-17 | 天水星火机床有限责任公司 | Lathe auxiliary support apparatus |
| CN204818750U (en) * | 2015-08-03 | 2015-12-02 | 山西北方机械制造有限责任公司 | Floating support |
| CN205394466U (en) * | 2016-03-02 | 2016-07-27 | 上海海业机电设备有限公司 | Novel turbine rotor gyro wheel support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105583794A (en) | 2016-05-18 |
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