CN110682257A - Steam turbine of thermal power plant overhauls device - Google Patents
Steam turbine of thermal power plant overhauls device Download PDFInfo
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- CN110682257A CN110682257A CN201910881139.4A CN201910881139A CN110682257A CN 110682257 A CN110682257 A CN 110682257A CN 201910881139 A CN201910881139 A CN 201910881139A CN 110682257 A CN110682257 A CN 110682257A
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- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 4
- 230000004323 axial length Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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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
- B25H1/0007—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby for engines, motor-vehicles or bicycles
-
- 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
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
-
- 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
- B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
- B25H1/16—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a steam turbine maintenance device of a thermal power plant, which comprises at least two supporting seats, wherein each supporting seat comprises two rollers with parallel axes, the rollers are used for supporting a steam turbine by matching with the outer circumference of a steam turbine mandrel, the rollers are arranged on the supporting seats through a lead screw slider mechanism, and the lead screw slider mechanism is used for adjusting the distance between the axes of the two rollers and matching with the steam turbine mandrels with different diameters; the bottom of at least one of the supporting seats is provided with a sliding pair for adjusting the distance between the supporting seat and other supporting seats; support the steam turbine dabber through setting up mated gyro wheel, can not only follow the multiple spot and realize supporting more stably to the steam turbine, can realize through the support of gyro wheel that the cooperation of gyro wheel and steam turbine dabber rotates to the angle of adjustment steam turbine reaches the effect of acquireing best maintenance angle.
Description
Technical Field
The application relates to a steam turbine overhauls the field, specific steam turbine of thermal power plant overhauls device that says so.
Background
The steam turbine is a rotary power machine which converts the energy of steam into mechanical work, is also called as a steam turbine, is mainly used as a prime mover for power generation, can directly drive various pumps, fans, compressors, ship propellers and the like, and can meet the heat supply requirements in production and life by utilizing the exhaust steam or intermediate extraction steam of the steam turbine, and the steam turbine is a very key energy supply tool in a thermal power plant.
The inventor discovers, present maintenance to the steam turbine need with the steam turbine hoist on the assumption placer, and to the steam turbine of equidimension not, place used device often because unable adjustment size and bring great trouble for placing of steam turbine, and at the maintenance in-process, to some highly lower positions, because the steam turbine volume is huge, it is comparatively loaded down with trivial details to change relative maintenance position through the method of hoisting the upset, and the power consumption is huge, inconvenient realization in limited space, often need maintainer squat or lie the below of steam turbine, under this state, maintainer's working strength is big, extremely easy fatigue, the maintenance progress is slow, the efficiency of whole maintenance process has been drawn down.
Disclosure of Invention
The purpose of this application is to the defect that prior art exists, provides a steam turbine of thermal power plant overhauls device, according to the steam turbine of waiting to overhaul of different specifications, sets up the vice interval to the supporting seat of sliding and adjusts, makes the supporting seat be in the supporting position reasonable to the steam turbine to can rotate the steam turbine that supports at any time through the support of gyro wheel, thereby adjust the maintenance position of steam turbine and be in the best operating position all the time, reach the effect that improves support stability and maintenance efficiency.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a steam turbine maintenance device for a thermal power plant comprises at least two supporting seats, wherein each supporting seat comprises two idler wheels with parallel axes, the idler wheels are used for supporting a steam turbine by matching with the outer circumference of a steam turbine mandrel, the idler wheels are arranged on the supporting seats through a lead screw slider mechanism, and the lead screw slider mechanism is used for adjusting the distance between the axes of the two idler wheels and matching with the steam turbine mandrels with different diameters; the supporting seat is provided with at least one sliding pair at the bottom for adjusting the distance between the supporting seat and other supporting seats.
Furthermore, the screw mechanism slide block comprises a screw and two slide blocks matched with the screw, the rollers with parallel axes are correspondingly arranged on the two slide blocks through supporting shafts and bearings respectively, and the slide blocks are supported by the top surface of the supporting seat.
Furthermore, the screw rod comprises two sections of threads with opposite screwing directions, and the two sliding blocks are respectively correspondingly matched with the two sections of threads and used for changing the distance between the axes of the two rollers when the screw rod rotates.
Furthermore, a supporting plate is correspondingly arranged below the supporting seat, and the supporting seat provided with a sliding pair is arranged on the supporting plate through the matching of the sliding pair.
Furthermore, the sliding pair is also matched with a locking device for intermittently locking the position of the corresponding support plate.
Furthermore, the supporting seat matched with the sliding pair is attached to the top surface of the supporting plate, and the pressure received by the supporting seat can be directly transmitted to the supporting plate.
Further, still include the base, the backup pad all install on the base through the telescopic link, the telescopic link is used for changing the relative height that different supporting seats correspond the gyro wheel through flexible.
Furthermore, the telescopic link that every backup pad corresponds all has a plurality ofly, evenly arranges between every backup pad and base for on the even application of the atress of backup pad to the base.
Furthermore, two corresponding idler wheels on each supporting plate are identical in structure, and the corresponding end faces are flush.
Furthermore, the rollers comprise multiple specifications, and the rollers with different specifications have different diameters and outer circumferential shapes and are used for correspondingly supporting the steam turbine mandrels with different diameters and different circumferential shapes.
Compared with the prior art, the application has the advantages and positive effects that:
(1) the paired rollers are arranged to support the steam turbine mandrel, so that the steam turbine can be supported more stably from multiple points, and the rollers and the steam turbine mandrel can be matched and rotated through the support of the rollers, so that the angle of the steam turbine is adjusted, and the effect of obtaining the optimal maintenance angle is achieved;
(2) the supporting seats are used for supporting the steam turbine from a plurality of positions of the mandrel, and for the steam turbine with large axial length, the distance between supporting points can be reduced, so that the supporting force is dispersed, the concentration of the supporting force is avoided, the problem that the steam turbine deforms due to overlarge self weight is avoided, and the supporting seats can be reasonably protected;
(3) the supporting seat with at least one adjustable position is arranged, so that the distance between the supporting seats can be effectively changed, and the steam turbines with different axial lengths can be adapted, thereby improving the application range of the whole overhauling device, and realizing supporting and overhauling on the steam turbines with different specifications in the same thermal power plant;
(4) the distance between the rollers is adjusted by matching the lead screw with the two sliding blocks, the movement of the two sliding blocks can be completed by adjusting only one lead screw by each supporting seat, and the rollers with different distances can be matched with the steam turbine mandrels with different diameters, are in clearance fit with the adjustable supporting seats and can be adapted to steam turbines with different specifications;
(5) the height of driving the supporting seat through the telescopic link is adjusted, the height of the whole steam turbine can be effectively improved, the lifting device is taken in comparison with the traditional lifting mode, the height of the lifting device is adjusted by the aid of a jacking mode with higher controllability, the height of the steam turbine can be adjusted safely and accurately, and the maintenance position under some special states can be conveniently checked and maintained by maintenance personnel in a comfortable posture from the lower side with larger space.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic view of the overall structure of a service device according to embodiment 1 of the present application;
fig. 2 is a schematic view of a lead screw slider mechanism according to embodiment 1 of the present application;
FIG. 3 is a schematic structural view of a sliding pair in embodiment 1 of the present application;
fig. 4 is a side view of the sliding pair structure according to embodiment 1 of the present application.
Wherein: 1. the base, 2, the telescopic link, 3, first backup pad, 4, first spout, 5, sliding seat, 6, first supporting seat, 7, first regulation carousel, 8, lead screw, 9, supporting disk, 10, pulley, 11, second spout, 12, mount pad, 13, lead screw, 14, slider, 15, gyro wheel, 16, second regulation carousel, 17, second backup pad, 18, second supporting seat.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As introduced in the background art, in the prior art, the steam turbine needs to be lifted to assume a placing device for the maintenance of the steam turbine, and for the steam turbines with different sizes, the placing device often brings great trouble to the placement of the steam turbine because the size of the placing device cannot be adjusted, and in the maintenance process, for some positions with lower height, because the steam turbine has a huge volume, the maintenance position is relatively complicated to change by a lifting and turning method, the energy consumption is huge, the maintenance is inconvenient to realize in a limited space, and maintenance personnel are often required to squat or lie below the steam turbine.
Example 1
In an exemplary embodiment of the present application, as shown in fig. 1, 2, 3 and 4, a steam turbine service apparatus of a thermal power plant is provided.
The device comprises at least two supporting seats, wherein each supporting seat comprises two idler wheels 15 with parallel axes, the idler wheels are used for supporting a steam turbine by matching with the outer circumference of a steam turbine mandrel, the idler wheels are arranged on the supporting seats through a lead screw slider mechanism, and the lead screw slider mechanism is used for adjusting the distance between the axes of the two idler wheels and matching with the steam turbine mandrels with different diameters; the bottom of at least one of the supporting seats is provided with a sliding pair for adjusting the distance between the supporting seat and other supporting seats; a support plate is correspondingly arranged below the support seat, and the support seat provided with the sliding pair is arranged on the support plate in a matching way through the sliding pair; the backup pad all install on base 1 through telescopic link 2, the telescopic link is used for changing the relative height that different supporting seats correspond the gyro wheel through flexible.
In this embodiment, to the short thermal power plant's steam turbine of axial length, adopt two supporting seats, wherein first supporting seat 6 installs on first backup pad 3 through the sliding pair, and second supporting seat 18 is fixed on second backup pad 17, first supporting seat and second supporting seat are the rectangle, and its bottom surface corresponds respectively and is equipped with four telescopic links, the telescopic link distributes on four angles of rectangle.
Of course, it can be understood that in other embodiments, for a steam turbine with a longer axial length, a structure that a plurality of supporting seats are matched with the supporting plate can be adopted, so that the long-axis steam turbine can be effectively and reasonably supported, and deformation caused by overlarge self weight of the middle part of the long-axis steam turbine is avoided; adopt two at least supporting seats for a plurality of positions from the dabber support the steam turbine, to the steam turbine that some axial length are big, can reduce the interval between the strong point to the dispersion holding power avoids the concentration of holding power, avoids the steam turbine because of the too big problem that warp of dead weight, and can carry out reasonable protection to the supporting seat.
The telescopic link can adopt electric telescopic handle, also can adopt hydraulic telescoping rod, in order to guarantee that the stable level of supporting seat rises, a plurality of telescopic links that same backup pad corresponds adopt same switch or valve to control, of course, when carrying out holistic lift to the steam turbine, all telescopic links all go up and down in step to guarantee that the supporting seat is to the stable stay of steam turbine, avoid taking place the problem emergence that inclines or break away from the cooperation position.
Furthermore, the sliding pair comprises a first sliding chute 4 arranged on a first supporting plate and a sliding seat 5 matched with the sliding chute, the first supporting seat is arranged on the top surface of the sliding seat, the sliding seat is of an upper-lower structure, the width of the lower part of the sliding seat is smaller than that of the upper part of the sliding seat, the lower part of the sliding seat is matched with the first sliding chute through a pulley 10 on the side surface to slide, so that the first supporting seat is driven to change the distance between the first supporting seat and a second supporting seat, two sides of the upper structure of the sliding seat are respectively provided with a threaded hole, each threaded hole is matched with a supporting device with adjustable height, the supporting device comprises a first adjusting turntable 7, a lead screw 8 and a supporting disk 9 which are sequentially connected, the first adjusting turntable is forced to drive the lead screw to rotate relative to the threaded hole, so that the contact relation between the first supporting plate and the, and applies the received force to the first support plate.
Set up the supporting seat of at least one adjustable position, can effectively change the interval between the supporting seat, the steam turbine of the different axial length of adaptation to improved the application scope of whole maintenance device, can realize supporting the maintenance to the steam turbine homoenergetic of the different specifications in the same thermal power plant.
The height of driving the supporting seat through the telescopic link is adjusted, the height of the whole steam turbine can be effectively improved, the lifting device is taken in comparison with the traditional lifting mode, the height of the lifting device is adjusted by the aid of a jacking mode with higher controllability, the height of the steam turbine can be adjusted safely and accurately, and the maintenance position under some special states can be conveniently checked and maintained by maintenance personnel in a comfortable posture from the lower side with larger space.
Furthermore, the device also comprises a second supporting plate 17 and a second supporting seat 18, wherein the second supporting seat is directly fixed on the second supporting plate to form stable connection.
Furthermore, a second chute 11 is arranged at the top end of the supporting seat, two mounting seats 12 are respectively arranged on two sides of the second chute, the lead screw 13 penetrates through the two mounting seats and is matched with the two mounting seats, second adjusting turntables are arranged at two ends of the lead screw, the second adjusting turntables at the two ends can drive the lead screw to rotate under the action of external force, the lead screw is matched with two sliding blocks 14, two rollers with parallel axes are correspondingly mounted on the two sliding blocks through supporting shaft matched bearings respectively, and the lower parts of the sliding blocks are matched with the second chute, so that the sliding blocks can be supported by the top surface of the supporting seat; the screw rod comprises two sections of threads with opposite rotating directions, and the two sliding blocks are respectively correspondingly matched with the two sections of threads and used for changing the distance between the axes of the two rollers when the screw rod rotates.
The distance between the rollers is adjusted by matching the lead screw with the two sliding blocks, the movement of the two sliding blocks can be completed by adjusting only one lead screw by each supporting seat, and the rollers with different distances can be matched with the steam turbine mandrels with different diameters, are in clearance fit with the adjustable supporting seats and can be adapted to steam turbines with different specifications;
support the steam turbine dabber through setting up mated gyro wheel, can not only follow the multiple spot and realize supporting more stably to the steam turbine, can realize through the support of gyro wheel that the cooperation of gyro wheel and steam turbine dabber rotates to the angle of adjustment steam turbine reaches the effect of acquireing best maintenance angle.
The operation of the steam turbine overhaul device of the thermal power plant disclosed in this embodiment is described in further detail below with reference to fig. 1.
Firstly, the steam turbine is hung through an external hanging device, the sliding seat 5 slides in the first sliding groove 4 according to the length of the steam turbine and the diameters of two ends of the steam turbine, after the steam turbine slides to a proper position, the two first adjusting turntables 7 are twisted clockwise to enable the screw rod 8 to rotate, so that the screw rod 8 extends downwards in the sliding seat 5 to drive the supporting disc 9 to contact with the first supporting plate, the first adjusting turntables 7 are screwed down to enable the supporting disc 9 to be completely contacted with the first supporting plate so as to fix the position of the sliding seat 5 in the first sliding groove 4, and then the second adjusting turntables 16 are twisted to enable the screw rod 13 to rotate, so that the two ends of the screw rod rotate in different screw threads, the two sliding blocks 14 are driven to slide in the second sliding groove 11 relatively, so that the position between the two sliding blocks 14 can be adjusted, the steam turbines with different diameters can be placed on an overhauling tool, rotated and overhauled, and then a switch, make the work of several 2 inside flexible motors of electric telescopic handle to make first backup pad 3 and second backup pad 17 all can rise or descend, thereby maintenance personal can inspect and maintain the steam turbine in the position of base 1 middle groove, and the bottom of base 1 can add and establish the universal wheel, makes the removal that maintenance tool itself can be free, thereby can remove maintenance tool to the target location as required, more makes things convenient for going on of personnel to steam turbine maintenance work.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The overhauling device for the steam turbine of the thermal power plant is characterized by comprising at least two supporting seats, wherein each supporting seat comprises two rollers with parallel axes, the rollers are used for supporting the steam turbine by matching with the outer circumference of a steam turbine mandrel, the rollers are arranged on the supporting seats through a lead screw slider mechanism, and the lead screw slider mechanism is used for adjusting the distance between the axes of the two rollers and matching with the steam turbine mandrels with different diameters; the supporting seat is provided with at least one sliding pair at the bottom for adjusting the distance between the supporting seat and other supporting seats.
2. The steam turbine overhaul device of a thermal power plant as claimed in claim 1, wherein the screw mechanism slide block comprises a screw and two slide blocks matched with the screw, two rollers with parallel axes are correspondingly mounted on the two slide blocks through supporting shafts matched with bearings respectively, and the slide blocks are supported by the top surface of the supporting base.
3. The thermal power plant steam turbine service apparatus of claim 2, wherein the lead screw includes two threads of opposite hand, and two sliders are respectively engaged with the two threads for changing the distance between the axes of the two rollers when the lead screw rotates.
4. The steam turbine overhaul device of a thermal power plant as claimed in claim 1 wherein a support plate is correspondingly mounted below the support blocks, and the support blocks with the sliding pairs mounted thereon are mounted on the support plate by means of the sliding pairs.
5. The steam turbine service apparatus of a thermal power plant of claim 4, wherein said sliding pair further incorporates a locking device for intermittently locking the position of the corresponding support plate.
6. The steam turbine overhaul device of a thermal power plant of claim 5 wherein the support blocks with the sliding pairs engaged therewith engage the top surfaces of the support plates, and the pressure received by the support blocks is directly transmitted to the support plates.
7. The steam turbine overhaul device of a thermal power plant of any one of claims 4 to 6 further comprising a base, wherein the support plates are each mounted to the base by telescoping rods, and the telescoping rods are configured to change the relative heights of the rollers corresponding to different support blocks by telescoping.
8. The steam turbine service apparatus of a thermal power plant of claim 7, wherein the plurality of expansion rods are provided for each support plate, and are uniformly disposed between each support plate and the base for uniformly applying the stress of the support plate to the base.
9. The steam turbine service apparatus of a thermal power plant of claim 1, wherein the corresponding two rollers of each support plate are identical in structure and have flush corresponding end surfaces.
10. The steam turbine service apparatus of a thermal power plant of claim 1, wherein the rollers comprise a plurality of sizes, and wherein the rollers of different sizes have different diameters and different outer circumferential shapes for correspondingly supporting different diameter sizes and different circumferential shapes of the turbine spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881139.4A CN110682257A (en) | 2019-09-18 | 2019-09-18 | Steam turbine of thermal power plant overhauls device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881139.4A CN110682257A (en) | 2019-09-18 | 2019-09-18 | Steam turbine of thermal power plant overhauls device |
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| CN110682257A true CN110682257A (en) | 2020-01-14 |
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| CN201910881139.4A Pending CN110682257A (en) | 2019-09-18 | 2019-09-18 | Steam turbine of thermal power plant overhauls device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111203502A (en) * | 2020-02-26 | 2020-05-29 | 安徽马钢设备检修有限公司 | Simple splitting device for lower grinding plate of rolling die of train wheel and using method of simple splitting device |
| CN111943104A (en) * | 2020-08-13 | 2020-11-17 | 大唐山东电力检修运营有限公司 | Auxiliary lifting equipment for overhauling rotating part of steam turbine and using method thereof |
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