CN211824245U - Jacking height measuring device for steam turbine jacking shaft system - Google Patents
Jacking height measuring device for steam turbine jacking shaft system Download PDFInfo
- Publication number
- CN211824245U CN211824245U CN202020907399.2U CN202020907399U CN211824245U CN 211824245 U CN211824245 U CN 211824245U CN 202020907399 U CN202020907399 U CN 202020907399U CN 211824245 U CN211824245 U CN 211824245U
- Authority
- CN
- China
- Prior art keywords
- steam turbine
- displacement sensor
- hole
- jacking
- measuring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model relates to a steam turbine jackshaft system jack-up height measurement device, including central controller, displacement sensor and support, central controller be integrated with display module's PLC controller, the input of PLC controller is connected with a plurality of displacement sensors that are used for measuring steam turbine rotor shaft jack-up height, every displacement sensor sets up in steam turbine rotor shaft top through the support respectively. The utility model adopts the PLC integrated with the display module to display the measuring result on the display screen in a centralized way, thereby reducing the manpower; meanwhile, the device is suitable for different jacking shaft systems and has certain universality.
Description
Technical Field
The utility model relates to a steam turbine apical axis system specifically is a steam turbine apical axis system jack-up height measurement device.
Background
The turbine top shaft system is a part of a lubricating oil system and mainly plays a role in ensuring that a turbine main shaft is prevented from being abraded when the turbine is started or stopped. The principle is as follows: the elliptical bearing of the steam turbine generator unit is provided with a high-pressure jacking shaft oil bag, and high-pressure oil provided by the jacking shaft device forms a static-pressure oil film between the rotor and the bearing oil bag to jack the rotor forcibly, so that dry friction between the shaft diameter and the bearing bush in the low-speed process of the steam turbine is avoided, turning moment is reduced, and the rotor and the bearing are protected. The function is as follows: in the process of reducing the rotating speed of the steam turbine generator unit, low-speed tile grinding is prevented, the pressure of a top shaft oil bag represents the oil film pressure of a bearing at the point during operation, and the method is one of important means for monitoring the elevation change of a shaft system and the load distribution of the bearing.
At present, in the debugging process of a top shaft system of a power plant, what the jacking height of the top shaft system is adopted is a dial indicator or a dial indicator, a plurality of persons are required to cooperate to read the height value of each bearing bush jacking and the oil pressure value of each bearing bush during measurement, and after the debugging is carried out for a plurality of times, the oil pressure balance of each bearing bush top shaft is adjusted according to the oil pressure zeroing speed in the pressure relief process at every time.
Disclosure of Invention
The utility model aims at providing a steam turbine apical axis system jack-up height measuring device measures apical axis system jack-up height through displacement sensor to concentrate through the display screen and show each axle bush department height of surveying, can practice thrift the manpower, improve measuring speed and adjustment pressure balance's efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a jacking height measuring device of a steam turbine jacking shaft system comprises a central controller, displacement sensors and a support, wherein the central controller is a PLC (programmable logic controller) integrated with a display module, the input end of the PLC is connected with a plurality of displacement sensors used for measuring the jacking height of a steam turbine rotor shaft, and each displacement sensor is arranged above the steam turbine rotor shaft through the support; the support constitute by magnetism base, bracing piece, installation pole and chuck, the bracing piece links firmly in magnetism base top, the mobilizable fixed setting of installation pole one end is on the bracing piece, the installation pole other end is equipped with the chuck that is used for installing displacement sensor.
The whole chuck is of a massive structure with a vertical through hole inside, the wall of the through hole is provided with a threaded through hole, and a fastening screw is arranged in the threaded through hole; the displacement sensor is arranged in the through hole in a penetrating mode and is fixed in the chuck through a fastening screw.
The displacement sensor is a magnetostrictive displacement sensor. (LVDT displacement sensor)
The utility model has the advantages that: the utility model adopts the PLC integrated with the display module to display the measuring result on the display screen in a centralized way, thereby reducing the manpower; meanwhile, the device is suitable for different jacking shaft systems and has certain universality.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the chuck.
In the figure, 1, a PLC (programmable logic controller), 2, a displacement sensor, 3, a bracket, 301, a magnetic base, 302, a support rod, 303, a mounting rod, 304, a clamping head, 305, a fastening screw, 4, a rotor shaft, 5, a bearing bush, 6 and a valve block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, current turbine ejector shaft system often is equipped with valve block 6, concentrates on the valve block with the ejector shaft oil circuit branch manometer of each axle bush 5, nevertheless measures rotor shaft 4 when by the jack-up height, still uses percentage table or amesdial more, because the steam turbine volume is huge, and 5 departments of every axle bush need alone observe the percentage table to need to be equipped with appurtenance such as intercom, now according to the utility model discloses a technical scheme improves ejector shaft system jack-up height measuring device:
a jacking height measuring device of a steam turbine jacking shaft system is shown in figure 1 and comprises a central controller, displacement sensors and a support, wherein the central controller is a PLC (programmable logic controller) 1 integrated with a display module, the PLC 1 can be arranged near a valve block 6 according to the characteristics of the jacking shaft system, observation of all height measuring results and observation of each pressure gauge can be realized by one person through the display module, the input end of the PLC 1 is connected with a plurality of displacement sensors 2 used for measuring the jacking height of a steam turbine rotor shaft 4, and each displacement sensor 2 is arranged above the steam turbine rotor shaft 4 through the support 3; the support 3 comprises a magnetic base 301, a supporting rod 302, a mounting rod 303 and a clamping head 304, wherein the supporting rod 302 is fixedly connected above the magnetic base 301, one end of the mounting rod 303 is movably and fixedly arranged on the supporting rod 302, and the other end of the mounting rod 303 is provided with the clamping head 304 for mounting the displacement sensor 2. The whole chuck 304 is a block structure with a vertical through hole inside, the wall of the through hole is provided with a threaded through hole, and a fastening screw 305 is arranged in the threaded through hole; the displacement sensor 2 is inserted into the through hole and fixed in the clamp 304 by a fastening screw 305.
The displacement sensor 2 is a magnetostrictive displacement sensor. In one embodiment of the present invention, a domestic LVDT displacement sensor is used.
In an embodiment of the present invention, the PLC controller 1 may further be interactively connected to a central control machine of the steam turbine top shaft system through a communication interface, so as to realize pressure of each branch oil path of the intelligent control steam turbine top shaft system.
To sum up, no matter whether the turbine jackshaft system realizes intellectuality, the utility model discloses an as an solitary jackshaft height measurement device, all can realize the concentrated observation of rotor shaft jack-up height, can effectively improve measurement of efficiency.
The part of the utility model not detailed is prior art.
Claims (3)
1. The utility model provides a steam turbine apical axis system jack-up height measuring device, includes central controller, displacement sensor (2) and support (3), characterized by: the central controller is a PLC (programmable logic controller) (1) integrated with a display module, the input end of the PLC (1) is connected with a plurality of displacement sensors (2) used for measuring the jacking height of a turbine rotor shaft (4), and each displacement sensor (2) is arranged above the turbine rotor shaft (4) through a support (3); support (3) constitute by magnetism base (301), bracing piece (302), installation pole (303) and chuck (304), bracing piece (302) links firmly in magnetism base (301) top, the mobilizable fixed setting of installation pole (303) one end is on bracing piece (302), the installation pole (303) other end is equipped with chuck (304) that are used for installing displacement sensor (2).
2. The steam turbine ejector shaft system jacking height measuring device of claim 1, wherein: the whole chuck (304) is of a block structure with a vertical through hole inside, the wall of the through hole is provided with a threaded through hole, and a fastening screw (305) is arranged in the threaded through hole; the displacement sensor (2) is arranged in the through hole in a penetrating mode and is fixed in the clamping head (304) through a fastening screw (305).
3. The steam turbine ejector shaft system jacking height measuring device of claim 1, wherein: the displacement sensor (2) is a magnetostrictive displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020907399.2U CN211824245U (en) | 2020-05-26 | 2020-05-26 | Jacking height measuring device for steam turbine jacking shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020907399.2U CN211824245U (en) | 2020-05-26 | 2020-05-26 | Jacking height measuring device for steam turbine jacking shaft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211824245U true CN211824245U (en) | 2020-10-30 |
Family
ID=73026217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020907399.2U Active CN211824245U (en) | 2020-05-26 | 2020-05-26 | Jacking height measuring device for steam turbine jacking shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211824245U (en) |
-
2020
- 2020-05-26 CN CN202020907399.2U patent/CN211824245U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110487158B (en) | Coupler centering detection device | |
| CN211824245U (en) | Jacking height measuring device for steam turbine jacking shaft system | |
| CN205175721U (en) | Require experimental suspension point load analogue means in beam -pumping unit factory | |
| CN203432584U (en) | Laser centering device | |
| CN206073894U (en) | A kind of rotor alignment degree adjusting means of extension type | |
| CN201329570Y (en) | Special mounting tool for thrust bush shelf of water turbine generator set | |
| CN103411592A (en) | Laser centering device and centering method thereof | |
| CN204013142U (en) | A kind of for the statically balanced device of rotor | |
| CN206611308U (en) | A kind of type vertical water pump rotor hoisting tool specials of HYL630 8 | |
| CN213333253U (en) | Clamping structure for arranging wind sensor | |
| CN213874168U (en) | Piston connecting rod height grouping device | |
| CN210588050U (en) | Tool for centering coupler | |
| CN210720249U (en) | Magnetic memory detection device suitable for large-area flat plate component | |
| CN204008005U (en) | A kind of for the statically balanced new device of rotor | |
| CN108092475A (en) | A kind of assembling detection device of electric machine casing positioning bushing | |
| CN204154447U (en) | Blind hole compression impellor tilting dynamic balance testing device | |
| CN219132189U (en) | Auxiliary fixture for installing large-scale bearing and piston ring | |
| CN207144046U (en) | A kind of water pump system for secondary water supply system | |
| CN207330112U (en) | A kind of device for improving large rotor bearing shell overhaul efficiency | |
| CN221396974U (en) | Wind turbine generator system integral type bearing frame hoist and mount dynamic balance device | |
| CN216012087U (en) | High, middle and pressure rotor centering device for steam turbine | |
| CN217814168U (en) | Stress balancing device for turbine interface | |
| CN211926720U (en) | Thrust gap adjusting device for mounting paired ball bearings | |
| CN206326555U (en) | Siemens's 3AP1 FI type breaker energy storage motor bore bearings tool specially for attaching and detaching | |
| CN201885834U (en) | Under-anchor prestress detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |