CN105583794A - Novel roller bracket for steam turbine rotor - Google Patents
Novel roller bracket for steam turbine rotor Download PDFInfo
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- CN105583794A CN105583794A CN201610118528.8A CN201610118528A CN105583794A CN 105583794 A CN105583794 A CN 105583794A CN 201610118528 A CN201610118528 A CN 201610118528A CN 105583794 A CN105583794 A CN 105583794A
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- rotor
- rolling wheel
- journal
- novel steam
- wheel support
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a novel roller bracket for a steam turbine rotor. The novel roller bracket comprises a base, a roller bracket body located above the base, and two supporting rollers arranged in a left-right symmetry mode. The two supporting rollers are both mounted in the roller bracket body in a rotatable mode. After the rotor is placed on the novel roller bracket for the steam turbine rotor, the two supporting rollers are located on the left side and the right side of a rotor journal respectively, and the outer circumferential faces of the supporting rollers make contact with the outer circumferential face of the rotor journal. The supporting rollers can rotate along the vertical radial line of the rotor journal, and swing front and back along the transverse radial line of the rotor journal. After the rotor is placed on two novel roller brackets, oppositely arranged front and back, for the steam turbine rotor, the supporting rollers can rotate and swing front and back automatically through pressure of the rotor on the supporting rollers, so that the outer circumferential faces of the supporting rollers are always in line contact with the outer circumferential face of the rotor journal, point contact between the supporting rollers and the rotor journal is avoided, and therefore the phenomenon of stress concentration is avoided, and burring of the outer circumferential face of the rotor journal and damage to the rotor are prevented.
Description
Technical field
The present invention relates to steam turbine and turbine component auxiliary mould field, particularly relate to a kind of novel steam machine rotor rollerSupport.
Background technology
The rotary power machinery that steam turbine is is mechanical power by the power conversion of steam, claims again steam turbine, is that modern firepower is sent outMost widely used prime mover in power plant, has the advantages such as single-machine capacity is large, efficiency is high, the life-span is long. Steam turbine is mainly by rotatingTwo aspect compositions of part and stationary part, wherein, rotating part comprises rotor, impeller, moving vane, shaft coupling etc., staticPart comprises cylinder, dividing plate, static cascade, packing, bearing etc. At present, the rotor of the use such as large-size steam turbine, generator is heavyReach hundred tons, maximum can reach 300 tons; Meanwhile, domestic main force generating set be mostly to build nearly ten years 600,000 kilowatts is to 1,000,000Kilowatt novel unit, after more than ten years continuous operation, these units progress into the overhaul phase, wherein, the cylinder of steam turbine,The maintenance of rotor, various steam valves is most important things.
In the time that the rotor of steam turbine is manufactured or keeped in repair, as shown in Figure 1, rotor must be placed on two rolling wheel supportsRevolution operation. Due to the cost of rotor costliness very, therefore manufacturing or when maintenance rotor, should be the outer peripheral face of rotorDo hair. Way comparatively general in prior art is: on rotor journal, install one and be divided into the protective sleeve of upper and lower two halves and makeProtective sleeve rolls on roller. But after revolution spreading, protective sleeve is deformed into oval ring by annular, thereby cause protectingSheath dismounting is not got off. If protective sleeve is firmly disassembled from rotor, be easy to the outer peripheral face of rotor to do hair, thereby makeBecome the secondary damage of rotor; And after protective sleeve disassembles firmly, can not use by secondary, the skin of protective sleeve is that steel, internal layer are blue or greenCopper, therefore the cost of protective sleeve is also very expensive, if protective sleeve can not recycle, has caused the significant wastage of resource.
Meanwhile, along with the development of technology, steam turbine also does larger and larger, therefore rotor is also more and more heavier, on rotor journal, pacifiesDress protective sleeve can not be adapted to existing large scale rotor, so gradually adopt in recent years at the rotor journal place of two ends of rotor eachPlace a rolling wheel support, each rolling wheel support is provided with two and distributes and be positioned at rotor journal along rotor journal radial symmetricThe nylon roller of both sides, nylon roller directly rolls on rotor journal. But, after employing rolling wheel support, there is other problem:The contact wire of nylon roller outer peripheral face and rotor journal outer peripheral face can not coincide well, and nylon roller and rotor journal are connect by lineTouch and change a contact into, thereby cause more serious stress to concentrate, not only nylon roller is made a mess of, also very likely do hair and turnSub-axle journal.
Further, as shown in Figure 1, thicker rotor also has amount of deflection, therefore the mid portion of rotor sinks, is placed onIt is flat again that two rolling wheel supports at rotor journal place, rotor rear and front end are put, and the contact wire of nylon roller and rotor journal is also misfitted;In addition, as shown in Figure 2, two rolling wheel supports at a distance of five or six meters on the ground after, two rolling wheel supports can not be completely oneOn bar straight line, also can cause nylon roller and rotor journal not to coincide well. And for the rotor more than 100 tons, manpower isCannot adjust fine motion to it, and not right on left and right directions after adjusting up and down, or after the adjustment of left and right not right on fore-and-aft direction,Therefore in the process contacting with rotor journal at nylon roller, have all the time the generation of stress concentration phenomenon, as long as momentaryLarge stress is just concentrated and rotor is produced and destroyed.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of novel steam machine rotor rolling wheel support,Support roller on this rolling wheel support can automatic floating, thereby makes contacting of support roller outer peripheral face and rotor journal outer peripheral faceLine automatically coincide.
For achieving the above object, the invention provides a kind of novel steam machine rotor rolling wheel support, be positioned at rotor front and back two for supportingThe rotor journal at end place, described novel steam machine rotor rolling wheel support comprises base, is positioned at the turning rolls and two of base topThe individual support roller being symmetrical set, two support rollers are all installed in rotation in turning rolls; When rotor is placed on newlyAfter on type turbine rotor rolling wheel support, two support rollers lay respectively at the left and right sides of rotor journal and support roller outsideSide face contacts with the outer peripheral face of rotor journal, and described support roller can rotate along the vertical radial line of rotor journal, support roller edgeThe horizontal radial line of rotor journal can rock back and forth.
Preferably, described support roller can not be vacillated now to the left, now to the right along the axis of rotor journal.
Further, also comprise the collar bush that is located in base, be located in collar bush and rotating rotor and setting firmlyAt the spheric seating of collar bush upper end, in described turning rolls, be installed with the main shaft of downward-extension on, this main shaft from top to bottom wears successivelyIn spheric seating, collar bush and rotor; The upper end of described spheric seating is provided with concave spherical surface, and described main shaft is provided with a sphere portion,The lower end of this sphere portion is provided with the protruding sphere matching with concave spherical surface; In described rotor, offer before and after the axis of rotor journalThe rectangular groove extending, the lower end of described main shaft is provided with the portion of waving being located in rectangular groove, described in wave rear and front end and the length of portionBetween the rear and front end of bar groove, form the space that rocks back and forth that two front and back are oppositely arranged.
Preferably, described in, wave portion and rectangular groove is matched in clearance on left and right directions.
Further, the pass between outer diameter D 1 and the outer diameter D 2 of support roller of described sphere portion epirelief sphere is:D1＝0.4D2～0.5D2。
Further, in described main shaft, offer high-pressure oil passage, the upper end of this high-pressure oil passage is provided with hydraulic oil import, lower endBe provided with the hydraulic oil outlet that extends downward described protruding sphere and concave spherical surface cooperation place.
Preferably, the upper surface of described base is provided with a supporter, described collar bush be from top to bottom located in successively supporter andIn base and with supporter and base, be and be slidably matched, in described base, be provided with jack, the upper surface of this jack top armContact with the lower surface of collar bush, the periphery of the described collar bush hold-doun nut that has been threaded, the lower surface of this hold-doun nut withThe upper surface of supporter leans.
Preferably, the periphery of described hold-doun nut offers multiple rotation breach.
Further, between described base and turning rolls, be provided with multiple aiding supports.
Preferably, described support roller is nylon roller.
Further, the side of described base is fixed with supporting seat, and on this supporting seat, fixed placement is useful on and drives rotor to rotateTorsion case.
As mentioned above, the novel steam machine rotor rolling wheel support the present invention relates to, has following beneficial effect:
In the application, two support rollers rotate along the vertical radial line of rotor journal, two support rollers along rotor journal laterallyRadial line rocks back and forth, therefore after rotor is placed on the novel steam machine rotor rolling wheel support that two front and back are oppositely arranged, pass through rotorSelf realizes support roller automatic rotating and automatically rocks back and forth the pressure of support roller, thereby makes the outer peripheral face of support rollerBe always line with the outer peripheral face of rotor journal and contact, and then avoid producing a contact between the two, thereby eliminate stress concentration phenomenon,Avoid doing the outer peripheral face of hair rotor journal and destroying rotor, finally improve efficiency and the quality of repairing rotor, maintenance.
Brief description of the drawings
State diagram when Fig. 1 is the maintenance of prior art rotor.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural representation of novel steam machine rotor rolling wheel support in the application.
Fig. 4 be in Fig. 3 A-A to cutaway view.
Fig. 5 is B circle enlarged drawing in Fig. 3.
Fig. 6 is the floating principle figure of turning rolls or support roller in the application.
Fig. 7 is the use state diagram of novel steam machine rotor rolling wheel support in the application.
Element numbers explanation
1 rotor journal
2 bases
3 turning rolls
4 support rollers
5 collar bushes
51 sleeve parts
52 pad portions
6 rotors
61 rectangular grooves
7 spheric seatings
71 concave spherical surfaces
8 main shafts
81 sphere portions
82 protruding spheres
83 wave portion
84 wave space
9 high-pressure oil passages
91 hydraulic oil imports
92 hydraulic oil outlets
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 supporting seats
15 torsion casees
16 cases
Detailed description of the invention
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can be taken off by this description belowThe content of revealing is understood other advantages of the present invention and effect easily.
Notice, appended graphic the illustrated structure of this description, ratio, size etc., all only in order to coordinate description to discloseContent, understands and reads for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore tool notTechnical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, is not affecting institute of the present invention energyUnder the effect producing and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Meanwhile, in this description, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease ofUnderstanding of narration, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing without essenceUnder technology contents, when being also considered as the enforceable category of the present invention.
In following examples, all directions are defined as follows: the bearing of trend of rotor axis is defined as to fore-and-aft direction, by rotor journalIn 1 cross section, the bearing of trend of vertical radial line is defined as above-below direction, by the extension side of horizontal radial line in rotor journal 1 cross sectionTo being defined as left and right directions; Or, as shown in Figure 1 and Figure 7, to be front to, the left side of paper be on the right side of paper rear to,The front of paper is right, the back side of paper be left to, the upside of paper is upper direction, the downside of paper is lower direction.In addition, in following examples, in the three-dimensional system of coordinate of single novel steam machine rotor rolling wheel support, each reference axis is defined as follows: willThe bearing of trend of rotor journal 1 axis is defined as X-axis, and the bearing of trend of vertical radial line in rotor journal 1 cross section is defined asZ axis, is defined as Y-axis by the bearing of trend of horizontal radial line in rotor journal 1 cross section; Therefore, before and after X-axis, extend Y-axisExtend left and right, downward-extension on Z axis.
The application provides a kind of novel steam machine rotor rolling wheel support, in the time that the rotor to steam turbine overhauls, keeps in repair, at vapourA novel steam machine rotor rolling wheel support of the each placement in rotor journal 1 place of turbine wheel rear and front end, as shown in Figure 7, therebyPlay the effect of supporting turbine rotor. As shown in Figure 3 and Figure 7, the novel steam machine rotor rolling wheel support bag that the application relates toDraw together base 2, be positioned at turning rolls 3 and 4, two support rollers of two support rollers that are symmetrical set of base 2 tops4 are all installed in rotation in turning rolls 3; After rotor being placed on novel steam machine rotor rolling wheel support, two supportsThe outer peripheral face that roller 4 lays respectively at the left and right sides of rotor journal 1 and the outer peripheral face of support roller 4 and rotor journal 1 joinsTouch, the axis of support roller 4 parallels with the axis of rotor journal 1, described support roller 4 can along rotor journal 1 verticallyRadial line rotates, and support roller 4 is along rocking back and forth through the horizontal radial line of rotor journal 1 of cross section in the middle of support roller 4; OrPerson says, two support rollers 4 are symmetrical set centered by Z axis, and can centered by Z axis, rotate two support rollers4 rock back and forth centered by Y-axis, and Y-axis is through the middle cross section of support roller 4. Preferably, described support roller 4 edgesThe axis of rotor journal 1 can not be vacillated now to the left, now to the right, and support roller 4 can not be vacillated now to the left, now to the right centered by X-axis, in case spline fromOverturning on novel steam machine rotor rolling wheel support, the axis of described rotor journal 1 is the axis of rotor.
In the application, two support rollers 4 rotate along the vertical radial line of rotor journal 1, and two support rollers 4 are along rotor journal1 horizontal radial line rocks back and forth, but two support rollers 4 can not vacillate now to the left, now to the right along the axis of rotor journal 1, therefore in the applicationThe floating principle of two support rollers 4 is: as shown in Figure 6, and two support rollers 4 can float around Z axis (rotating in other words conj.or perhaps),Also can float around Y-axis (centered by Y-axis, line rocks back and forth in other words conj.or perhaps), (in other words conj.or perhaps can not but can not float around X-axisCentered by X-axis, line is vacillated now to the left, now to the right). Therefore,, in the time that rotor is overhauled or keeped in repair, rotor is placed on to two front and back relativeArrange novel steam machine rotor rolling wheel support on after, by rotor self to the pressure of support roller 4 realize support roller 4 aroundZ axis automatic rotating adjustment and around the Y-axis adjustment that automatically rocks back and forth, thus make outer peripheral face and the armature spindle of support roller 4The outer peripheral face of neck 1 is always line contact, and then avoids producing a contact between the two, thereby eliminates stress concentration phenomenon, avoidsDo the outer peripheral face of hair rotor journal 1 and destroy rotor, finally improving efficiency and the quality of repairing rotor, maintenance.
In order to realize in above-mentioned novel steam machine rotor rolling wheel support, two support rollers 4 around Z axis float, around Y-axis float,But can not float around X-axis, a kind of preferred embodiment of novel steam machine rotor rolling wheel support is below provided.
As shown in Figures 3 to 5, described novel steam machine rotor rolling wheel support also comprise the collar bush 5 that is located in base 2,Be located in collar bush 5 and rotating rotor 6 and be weldingly fixed on the spheric seating 7 of collar bush 5 upper ends, described turning rollsIn 3, be installed with the main shaft 8 of downward-extension on, this main shaft 8 is located in spheric seating 7, collar bush 5 and rotor from top to bottom successivelyIn 6, the bearing of trend that is axially described Z-direction or described rotor journal 1 vertical radial line of main shaft 8; Described spheric seating 7Upper end be provided with concave spherical surface 71, described main shaft 8 is provided with a sphere portion 81, the lower end of this sphere portion 81 is provided with and concave spherical surface 71The protruding sphere 82 matching, the center of circle of described concave spherical surface 71 and protruding sphere 82 is all on Z axis, all on the axis of main shaft 8;In described rotor 6, offer the rectangular groove 61 extending along the axis front and back of rotor journal 1, the lower end of described main shaft 8 is provided with wearsBe located at the portion of waving 83 in rectangular groove 61, described in wave between the rear and front end of portion 83 and the rear and front end of rectangular groove 61 and formThe part that space 84 is rectangular groove 61 is waved in 84, two, the space that rocks back and forth that two front and back are oppositely arranged. Preferably, instituteState the portion of waving 83 is matched in clearance with rectangular groove 61 on left and right directions, so, wave portion 83 and be haply flat.
After the portion of waving 83 of main shaft 8 inserts in the rectangular groove 61 of rotor 6, wave portion 83 with rectangular groove 61 at left and right directionsUpper for matched in clearance, the left and right sides of the portion of waving 83 and the left and right sides of rectangular groove 61 are fitted, therefore wave portion 83Can not vacillate now to the left, now to the right with respect to rectangular groove 61, therefore, main shaft 8 can not be vacillated now to the left, now to the right, thereby realizes turning rolls 3 and two supportsRoller 4 can not float around X-axis, vacillate now to the left, now to the right. Described wave the rear and front end of portion 83 and the rectangular groove 61 of rotor 6 beforeBetween rear two ends, form the space 84 that rocks back and forth that two front and back are oppositely arranged, therefore, waving portion 83 can be with respect to rectangular groove 61Rock back and forth, then on main shaft 8, cooperatively interacting between the protruding sphere 82 of sphere portion 81 and the concave spherical surface 71 of spheric seating 7 realized and being rolledWheel carrier 3 floats, rocks back and forth around Y-axis together with two support rollers 4. Further, wave portion 83 and rotor 6Rectangular groove 61 is matched in clearance on left and right directions, and rotor 6 can freely rotate in collar bush 5, therefore, and main shaft 8Rotatable in collar bush 5, make main shaft 8 centered by self axis and rotate, thereby realize turning rolls 3 and two supportsRoller 4 floats, rotates around Z axis. In this embodiment, the protruding sphere 82 of spherical surface body and the concave spherical surface of spheric seating 7 on main shaft 871 match can play following effect: 1, supporting role; 2, make main shaft 8, turning rolls 3 and support roller 4 threes synchronouslyWave unsteady effect around Z axis and Y-axis.
Preferably, for the ease of rotor 6 is packed in collar bush 5, as shown in Figure 3, described collar bush 5 is by sleeve part 51Form with pad portion 52, described rotor 6 be positioned at the lower end of sleeve part 51 and with sleeve part 51 matched in clearance, treat rotor6 pack in sleeve part 51 after, pad is being welded on the lower surface of sleeve part 51 to the outer peripheral face of described rotor 6, coverThe inner peripheral surface of cylinder portion 51 is periphery. Meanwhile, because rotor 6 is positioned at the lower end of collar bush 5, thereby make to be positioned at rectangularThe length of one section of main shaft 8 between the concave spherical surface 71 of groove 61 and spheric seating 7 is longer, and then it is floating around X-axis to make to limit main shaft 8Moving restraint is decreased to 1/10 left and right.
In above-described embodiment, when support roller 4 is in the time that Z axis and Y-axis are floated, protruding sphere 82 and the sphere of described sphere portion 81Between the concave spherical surface 71 of seat 7, there is frictional force, in order to reduce this frictional force, improve support roller 4 and float around Z axis and Y-axisReliability, in the present embodiment, at least material selection nitrated steel or the hardened steel of sphere portion 81 on main shaft 8, the material of spheric seating 7Matter is selected the phosphor bronze of coefficient of friction minimum, therefore sphere portion 81 and spheric seating 7 can interlocks, be convenient to main shaft 8 dual float andAdjust, and its volume is little, cost is low, float time inertia resistance little. Further, described sphere portion 81 epirelief spheres 82Outer diameter D 1 and the outer diameter D 2 of support roller 4 between pass be: D1=0.4D2～0.5D2. Specifically, rotor single headRotor journal 1 is heavily P, when turning rolls 3 floats, and initiatively moment J1=P*D2/4=0.25PD2; The protruding sphere of sphere portion 8182 and the concave spherical surface 71 of spheric seating 7 between coefficient of friction get 0.15, when turning rolls 3 floats, the protruding ball of sphere portion 81Frictional force moment J2=0.15*P*D1=0.15D1=0.06PD2～0.075PD2 between the concave spherical surface 71 of face 82 and spheric seating 7;So, the coefficient of reliability γ=J1/J2=0.25PD2/ of support roller 4 in the time that Z axis and Y-axis are floated (0.06PD2～0.075PD2)=3.33～4.167. Hence one can see that: the coefficient of reliability γ in the time that Z axis and Y-axis are floated is higher for support roller 4,Therefore it is very good that the outer peripheral face of the outer peripheral face of support roller 4 and rotor journal 1 coincide, be always line contact between the two, stress is equalEven, there will not be king-sized stress concentration phenomenon. Therefore the novel steam machine rotor rolling wheel support that, the application relates to can be long-termWork, therefore this novel steam machine rotor rolling wheel support can also add as turbine rotor the lathe use in man-hour, now, uses oneThe little lathe of platform or planker just can car be repaiied packing or the blade shroud band etc. of turbine rotor; With respect to traditional turbine rotor is transportedBe back to the mode that turbine rotor manufactory car is repaiied, the application can and then greatly save turbine rotor maintenance cost,Greatly improve the maintenance efficiency of turbine rotor, make power plant can fulfil the maintenance task of turbine rotor ahead of schedule; This is for electricityFactory's tool has very great significance: because power plant repaiies one day less, just meaning power plant's generating in early a day, is exactly directly to createThe millions of units of financial resources.
In order further to there is frictional force between the minimizing protruding sphere 82 of sphere portion 81 and the concave spherical surface 71 of spheric seating 7, to improve and prop upSupport roller 4, around Z axis and the unsteady reliability of Y-axis, as shown in Figure 3 and Figure 5, offers high-pressure oil passage in described main shaft 89, the upper end of this high-pressure oil passage 9 is provided with hydraulic oil import 91, lower end is provided with and extends downward described protruding sphere 82 and concave spherical surfaceThe hydraulic oil of 71 cooperation places exports 92, thereby hydraulic oil is delivered to the cooperation place of protruding sphere 82 and concave spherical surface 71, reduces bothBetween frictional force; Simultaneously input hydraulic oil there is certain pressure, spherical surface body upwards can also be held up, be convenient to main shaft 8 aroundZ axis and Y-axis are floated, and float around Z axis and Y-axis thereby be convenient to support roller 4. In the present embodiment, as shown in Figure 5, described inHigh-pressure oil passage 9 comprises the main channel 93 of vertical extension and the secondary channels 94 of multiple oblique extensions, and the lower end of main channel 93 is with manyThe upper end of individual secondary channels 94 is connected, and the lower end of multiple secondary channels 94 all extends to the cooperation place of protruding sphere 82 and concave spherical surface 71.Meanwhile, in order to ensure that main shaft 8 can float around Z axis and Y-axis, as shown in Figure 3, between described main shaft 8 and spheric seating 7,Wave between the lower end of portion 83 and the pad portion 52 of collar bush 5 and all have gap.
Preferably, as shown in Figure 3, the upper surface of described base 2 is provided with a supporter 10, and described collar bush 5 from top to bottomBe located in successively in supporter 10 and base 2 and with supporter 10 and base 2 and be and be slidably matched, therefore collar bush 5 is propping upIn support body 10 and base 2, can move up and down, in described base 2, be provided with jack 11, the upper surface of these jack 11 top arms withThe lower surface of collar bush 5 contacts, the periphery of described collar bush 5 hold-doun nut 12 that has been threaded, this hold-doun nut 12The upper surface of lower surface and supporter 10 leans. After rotor is placed on two novel steam machine rotor rolling wheel supports, also needAdjust the height that novel steam machine rotor rolling wheel support supports turbine rotor, adjust the height of turning rolls 3; Now, driveJack 11 moves, and the top arm of jack 11 upwards ejects, thereby by collar bush 5, main shaft 8, turning rolls 3, back-up rollerWheel 4 and turbine rotor synchronously upwards eject, and hold-doun nut 12 is separated with supporter 10, rotary fixing screw cap afterwards12, during according to rotor maintenance, required bearing height is adjusted the upper-lower position of hold-doun nut 12 on collar bush 5, loosens very heavyTop 11 or remove jack 11, collar bush 5, main shaft 8, turning rolls 3, support roller 4 and turbine rotor are done at gravityWith under synchronously move down, until the upper surface of the lower surface of hold-doun nut 12 and supporter 10 leans, roll thereby completeThe adjustment of wheel carrier 3 height, makes the state of rotor in level. Described supporter 10 can manufacture integral piece with base 2,Also can be for being welded and fixed.
Preferably, as shown in Figure 3, the periphery of described hold-doun nut 12 offers multiple rotation breach 121, thereby is convenient to rotationHold-doun nut 12. Between described base 2 and turning rolls 3, be provided with multiple aiding supports 13, what raising was supported turbine rotor canLean on property. In the present embodiment, the structure of described aiding support 13 is: aiding support 13 by screw rod 131, top nut 132 and underNut 133 forms, and the upper end of screw rod 131 is threaded with the lower surface of turning rolls 3, top nut 132 and screw rod 131 screw threadsConnect and also lean with the lower surface of turning rolls 3, lower nut 133 is threaded with screw rod 131, and with the upper end of base 2Face leans. Preferably, described support roller 4 is nylon roller, and the hardness of nylon roller is less than the hardness of turbine rotor,Be less than the hardness of rotor journal 1, thus can play the effect of protection rotor journal 1, when outside rotor outer peripheral face or support roller 4While having impurity on side face, impurity all can be embedded in nylon roller, and can not be embedded in rotor journal 1. As shown in Figure 3,A case of being made up of lucite 16 can also be installed above turning rolls 3, and placement dust etc. sticks to support roller 4On turbine rotor.
Further, in the time that car is repaiied turbine rotor, the state of turbine rotor in rotating, driving steam turbine rotor rotatesMode has two kinds: 1, manual actuation, load handwheel and transmission mechanism, and artificial rotation hand wheel, drive back-up roller by rotating mechanismWheel 4 rotates, thereby drives rotor to rotate; 2, motorized motions, loads torsion case 15, the output of torsion case 15 and rotorEnd is connected, thereby drives rotor to rotate. As shown in Figure 7, the side of described base 2 is welded with supporting seat 14, shouldOn supporting seat 14, fixed placement is useful on the torsion case 15 that drives rotor to rotate, and therefore, the application can avoid because of by torsion case 15Install and on the ground of power plant, hammer on the ground foundation bolt, after turbine rotor maintenance finishes, foundation bolt removedOperation, meets power plant and does not allow the requirement of random mounting foot bolt.
In addition, the syndeton between support roller 4 and turning rolls 3 can be: one, on turning rolls 3, be fixed with two rotating shafts,Support roller 4 is arranged in rotating shaft by bearing, therefore support roller 4 can rotate around the axis, realizes support roller 4 with respect to rollingWheel carrier 3 is rotatable; Two, support roller 4 is fixed in rotating shaft, and the two ends of rotating shaft are arranged on turning rolls 3 by bearing, thereforeSupport roller 4 is rotatable with respect to turning rolls 3 together with rotating shaft.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention. Anyly be familiar with this skillThe personage of art all can, under spirit of the present invention and category, modify or change above-described embodiment. Therefore, such asUnder have in technical field conventionally know the knowledgeable do not depart under disclosed spirit and technological thought, complete all etc.Effect is modified or is changed, and must be contained by claim of the present invention.
Claims (11)
1. a novel steam machine rotor rolling wheel support, is positioned at the rotor journal (1) at rotor rear and front end place for supporting, its feature existsIn: described novel steam machine rotor rolling wheel support comprise base (2), be positioned at the turning rolls (3) of base (2) top, withAnd two support rollers that are symmetrical set (4), two support rollers (4) are all installed in rotation on turning rolls (3)In; After rotor being placed on novel steam machine rotor rolling wheel support, two support rollers (4) lay respectively at armature spindleThe outer peripheral face of the left and right sides of neck (1) and support roller (4) contacts with the outer peripheral face of rotor journal (1), described inSupport roller (4) can rotate along the vertical radial line of rotor journal (1), and support roller (4) is along the horizontal stroke of rotor journal (1)Can rock back and forth to radial line.
2. novel steam machine rotor rolling wheel support according to claim 1, is characterized in that: described support roller (4) is along turningThe axis of sub-axle journal (1) can not be vacillated now to the left, now to the right.
3. novel steam machine rotor rolling wheel support according to claim 1 and 2, is characterized in that: also comprise and be located in base (2)In collar bush (5), be located in collar bush (5) and rotating rotor (6) and being installed on collar bush (5)The spheric seating (7) of end, is installed with the main shaft (8) of downward-extension in described turning rolls (3), this main shaft (8) is by extremely upperUnder be located in successively in spheric seating (7), collar bush (5) and rotor (6); The upper end of described spheric seating (7) is provided withConcave spherical surface (71), described main shaft (8) is provided with a sphere portion (81), and the lower end of this sphere portion (81) is provided with and recessed ballThe protruding sphere (82) that face (71) matches; In described rotor (6), offer before and after the axis of rotor journal (1)The rectangular groove (61) extending, the lower end of described main shaft (8) is provided with the portion of waving (83) being located in rectangular groove (61),Described wave between the rear and front end of portion (83) and the rear and front end of rectangular groove (61), form that two front and back are oppositely arranged beforeAfter wave space (84).
4. novel steam machine rotor rolling wheel support according to claim 3, is characterized in that: described in wave portion (83) with rectangularGroove (61) is matched in clearance on left and right directions.
5. the novel steam machine rotor rolling wheel support of stating according to claim 3, is characterized in that: described sphere portion (81) epirelief sphere(82) pass between the outer diameter D 2 of outer diameter D 1 and support roller (4) is: D1=0.4D2～0.5D2.
6. novel steam machine rotor rolling wheel support according to claim 3, is characterized in that: described main shaft offers in (8)High-pressure oil passage (9), the upper end of this high-pressure oil passage (9) is provided with hydraulic oil import (91), lower end is provided with and extends downwardThe hydraulic oil outlet (92) of described protruding sphere (82) and concave spherical surface (71) cooperation place.
7. novel steam machine rotor rolling wheel support according to claim 3, is characterized in that: the upper surface of described base (2)Be provided with a supporter (10), described collar bush (5) is located in supporter (10) and base (2) from top to bottom successivelyIn and be and be slidably matched with supporter (10) and base (2), in described base (2), be provided with jack (11),The upper surface of this jack (11) top arm contacts with the lower surface of collar bush (5), the periphery spiral shell of described collar bush (5)Line is connected with hold-doun nut (12), and the upper surface of the lower surface of this hold-doun nut (12) and supporter (10) leans.
8. novel steam machine rotor rolling wheel support according to claim 7, is characterized in that: outside described hold-doun nut (12)Offer multiple rotation breach (121) week.
9. novel steam machine rotor rolling wheel support according to claim 1, is characterized in that: described base (2) and turning rolls(3) between, be provided with multiple aiding supports (13).
10. novel steam machine rotor rolling wheel support according to claim 1, is characterized in that: described support roller (4)For nylon roller.
11. novel steam machine rotor rolling wheel supports according to claim 1, is characterized in that: the side of described base (2)Limit is fixed with supporting seat (14), and the upper fixed placement of this supporting seat (14) is useful on the torsion case (15) that drives rotor to rotate.
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| CN201610118528.8A CN105583794B (en) | 2016-03-02 | 2016-03-02 | Turbine rotor rolling wheel support |
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| CN201610118528.8A CN105583794B (en) | 2016-03-02 | 2016-03-02 | Turbine rotor rolling wheel support |
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| CN105583794B CN105583794B (en) | 2017-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108336874A (en) * | 2018-04-17 | 2018-07-27 | 南京汽轮电机(集团)有限责任公司 | A kind of generator amature puts rotating device |
| CN109802529A (en) * | 2019-03-28 | 2019-05-24 | 江苏核电有限公司 | False watt of a kind of exciter rotor using roller supporting |
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| 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 |
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| 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, 13589 Berlin | 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 |
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| CN204396907U (en) * | 2014-12-25 | 2015-06-17 | 天水星火机床有限责任公司 | Lathe auxiliary support apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108336874A (en) * | 2018-04-17 | 2018-07-27 | 南京汽轮电机(集团)有限责任公司 | A kind of generator amature puts rotating device |
| 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 |
| CN109802529A (en) * | 2019-03-28 | 2019-05-24 | 江苏核电有限公司 | False watt of a kind of exciter rotor using roller supporting |
| CN109802529B (en) * | 2019-03-28 | 2024-02-13 | 江苏核电有限公司 | Exciter rotor false tile supported by roller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105583794B (en) | 2017-09-22 |
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