CN205940494U - High on - line measuring device of turbo generator set rotor jack -up - Google Patents
High on - line measuring device of turbo generator set rotor jack -up Download PDFInfo
- Publication number
- CN205940494U CN205940494U CN201620748684.8U CN201620748684U CN205940494U CN 205940494 U CN205940494 U CN 205940494U CN 201620748684 U CN201620748684 U CN 201620748684U CN 205940494 U CN205940494 U CN 205940494U
- Authority
- CN
- China
- Prior art keywords
- rotor
- utility
- model
- discloses
- generator set
- 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
Abstract
The utility model discloses a high on - line measuring device of turbo generator set rotor jack -up will be through vibrating the signal input computer to calculate out bearing department rotor jack -up height according to vibration signal voltage's change gauge. The panel heater is convenient for installation. The utility model discloses need not arrive each bearing department and set up the percentage table, but use turbo generator set's vibration probe itself, only need will vibrate signal connection collection equipment can, the immediate shipment is used promptly, the utility model discloses measurement accuracy is high, and ware measurement accuracy can reach 1 mu m, the utility model discloses can not produce mechanical displacement, data are workably spent highly, the utility model discloses comparing with traditional mode and having saved the manpower, it is reading error to have avoided the people simultaneously.
Description
Technical field
The utility model is related to Turbo-generator Set, particularly the on-line measurement dress of rotor of turbogenerator set jack-up height
Put.
Background technology
Steam turbine and generator are the capital equipments in Thermal Power Station, carry the effect converting heat into electric energy,
Its safe operation is significant to power plant.For the Turbo-generator Set being provided with jacking oil system, required according to producer, depending on machine
Type is different, rotor of turbogenerator set jack-up highly typically between 0.02mm～0.08mm, in Turbo-generator Set jacking oil
During system call interception, measurement rotor jack-up height is a requisite process, the precision of its measured value and magnitude relationship
To the safe operation of rotor of turbogenerator set, bearing shell and whole unit, it is that the adjustment of Turbo-generator Set jacking oil system is normal
Foundation.
During jacking oil system adjustment at present, all by the way of setting up dial gauge at each bearing, to measure steamer and to send out
Motor group rotor jack-up height, this mode mainly has following shortcoming：
A, it is big that dial gauge sets up difficulty.Most of Turbo-generator Set producers are for the consideration to factors such as safety, rotor
Exposed portion is all very short, all narrow by place at bearing, and staff presses close to set up dial gauge at bearing rotor；
B, alignment error is larger.Because the place of decorating position is limited, staff is inconvenient to adjust when setting up dial gauge
Whole, during adjustment dial gauge, sight line is easily obstructed, and is difficult to accurately judge dynamics and the direction of adjustment, leads to alignment error
Greatly；
C, is also easy to produce error in reading.Due to being pointer dial reading, visual angle is different, and reading can produce certain deviation；
D, mechanical displacement in measurement process for the dial gauge may lead to distortion in readings.In measurement process, due to percentage
Table connection member is more, is also easy to produce displacement between each part, leads to measurement data distortion.
Content of the invention
The technical problems to be solved in the utility model is：A kind of rotor of turbogenerator set jack-up height on-line measurement is provided
Device, in the current rotor of turbogenerator set jack-up elevation carrection of solution, meter installation difficulty is big, certainty of measurement is relatively low, reading loses
A genuine difficult problem, adjusting for jacking oil system provides accurate data, provides advantage for Turbo-generator Set safe operation.
The technical solution of the utility model is：A kind of rotor of turbogenerator set jack-up height on-line measurement device, including
Vibrating sensor, vibrating sensor is located normal in the plane of rotor axis, and is distributed in the straight line cutting with rotor section phase
On, vibrating sensor is connected with TSI fastener, and TSI fastener is connected with data acquisition equipment, data acquisition equipment and computer phase
Even.The sample rate of data acquisition equipment is more than 5k, and resolution ratio is more than 12bit, and port number is more than 3.
As one of which embodiment, vibrating sensor totally two, it is located at two straight lines passing through rotor axis respectively
On, and two vibrating sensors were distributed in the both sides of the vertical line of rotor axis.It is assumed that vibrating sensor is located normal to turn
In the Cartesian plane coordinate system of sub- axis, and it is arranged in x-axis and y-axis, that is, x passes to vibrating sensor and y to vibration
Sensor, simultaneously Cartesian plane coordinate origin overlap with rotor axis.X is to vibrating sensor and y to vibrating sensor and TSI
(supervision protection system) fastener be connected, TSI (supervision protection system) fastener is connected with data acquisition equipment, data acquisition equipment and
Computer is connected.
In the case of above-mentioned supposition, rotor of turbogenerator set jack-up height On-line Measuring Method comprises the following steps：
Step 1) start jacking(oil) pump before, record bearing rotor vibration signal raw voltage values：I represents axle
Hold numbering, at each bearing, have two sensors, x represents x to vibrating sensor, and y represents y to vibrating sensor；
Step 2) start jacking(oil) pump, adjust apical axis oil pressure, when oil pressure changes, record vibration signal electricity now
Pressure valueAs shown in formula (1), calculate respectively
Step 3) calculate rotor jack-up height at each bearingAs shown in formula (2),
In formula, k is sensor coefficient, cx、cyFor coefficient of angularity, coefficient of angularity cx、cyComputing formula is shown in formula (3).
cx=sec θx
cy=sec θyFormula (3)；
In formula, θx、θyFor the angle of vibrating sensor and rotors normal direction, rotors normal direction here refers to be located at
In above-mentioned cartesian coordinate plane, cross a vertical direction straight line of initial point.
, to vibrating sensor measurement x to the spacing between vibrating sensor and rotor, y is to vibrating sensor measurement y to shaking for x
Spacing between dynamic sensor and rotor.Wherein,Be between the sensor and rotor being recorded to vibrating sensor according to x between
Away from the rotor derived of change vertical direction displacement variable；Be the sensor that recorded to vibrating sensor according to y with
The rotor that spacing change between rotor is derived is in the displacement variable of vertical direction.It should be noted that above-mentioned derive
Displacement variable be an approximation close to bearing actual jack-up height, but due to the difference of the two little to can ignore,
It is taken as that it is equal.According to unit vibration sensor installation situation during actual measurement, voluntarily determine closest to actual jack-up height
Numerical value.
The utility model can replace the device of traditional measurement rotor of turbogenerator set jack-up height, more easily obtains
More accurate data.Compare with traditional approach, have some beneficial effect following：
A, easy for installation.The utility model does not need to set up dial gauge at each bearing, but uses Turbo-generator Set
Vibration signal only need to be accessed collecting device, plug and play by the vibration probe of itself；
B, certainty of measurement is high.The utility model utilizes vibrating sensor, and certainty of measurement can reach 1 μm, and traditional percentage
Table certainty of measurement is 10 μm；
C, will not produce mechanical displacement, and data Feasible degree is high.Turbo-generator Set Vibration probe is carried out in installation process
Strict verification, adopts and is screwed, part is less, will not produce the slip between mechanical part, the data recording has relatively
High Feasible degree；
D, saves manpower.The utility model can realize the monitoring to rotor jack-up height at whole bearings for the people, and
Traditional measurement mode will be realized whole bearing jack-up height monitorings simultaneously and typically require more than six people, saving compared with traditional approach
Manpower, avoids artificial error in reading simultaneously.
Brief description
Fig. 1 is the utility model on-line measurement device connection diagram；
Fig. 2 is the angle of vibrating sensor and vertical direction is schematic diagram when 45 °；
Fig. 3 is the angle theta of vibrating sensor and vertical directionx、θySchematic diagram.
Specific embodiment
1) a kind of rotor of turbogenerator set jack-up height on-line measurement device, vibrating sensor totally two, are located at respectively
Article two, pass through on the straight line of rotor axis, and two vibrating sensors were distributed in the both sides of the vertical line of rotor axis.It is assumed that
Vibrating sensor is located normal in the Cartesian plane coordinate system of rotor axis, and is arranged in x-axis and y-axis, that is, x to
Vibrating sensor and y are overlapped to vibrating sensor, simultaneously Cartesian plane coordinate origin with rotor axis.X is to vibrating sensing
Device and y are connected to vibrating sensor with TSI (supervision protection system) fastener, TSI (supervision protection system) fastener and data acquisition
Equipment is connected, and data acquisition equipment is connected with computer.
As shown in Figure 1, bearing rotor vibration signal Turbo-generator Set being needed measurement accesses data acquisition equipment,
This signal refers not only to the Buffer output interface on TSI fastener, also includes all monitoring with Turbo-generator Set itself and pops one's head in as letter
The interface in number source；
2) data acquisition equipment is connected with computer, by incoming for bearing rotor vibration signal computer；
3), before starting jacking(oil) pump, bearing rotor vibration signal raw voltage values are recorded：I represents that bearing is compiled
Number, oriented two sensors at each bearing, x represents x to vibrating sensor, and y represents y to sensor；
4) start jacking(oil) pump, adjust apical axis oil pressure, when oil pressure changes, record vibration signal magnitude of voltage nowAs shown in formula (1), calculate respectively
5) calculate rotor jack-up height at each bearingSee formula (2)；
In formula, k is sensor coefficient, cx、cyFor coefficient of angularity, as shown in Figure 2, the folder of such as sensor and vertical direction
Angle is 45 °, then coefficient of angularity c isCoefficient of angularity cx、cyComputing formula is shown in formula (3).
cx=sec θx
cy=sec θyFormula (3)
In formula, as shown in Figure 3, θx、θyAngle for vibrating sensor and rotors normal direction.
Claims (3)
1. a kind of rotor of turbogenerator set jack-up height on-line measurement device, including vibrating sensor it is characterised in that：Vibration
Sensor is located normal in the plane of rotor axis, and is distributed on the straight line cutting with rotor section phase, vibrating sensor with
TSI fastener is connected, and TSI fastener is connected with data acquisition equipment, and data acquisition equipment is connected with computer.
2. a kind of rotor of turbogenerator set jack-up height on-line measurement device according to claim 1 it is characterised in that：
Described vibrating sensor totally two, is located on two straight lines passing through rotor axis respectively, and two vibrating sensors are distributed in
Cross the both sides of the vertical line of rotor axis.
3. a kind of rotor of turbogenerator set jack-up height on-line measurement device according to claim 1 it is characterised in that：
The sample rate of data acquisition equipment is more than 5k, and resolution ratio is more than 12bit, and port number is more than 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748684.8U CN205940494U (en) | 2016-07-14 | 2016-07-14 | High on - line measuring device of turbo generator set rotor jack -up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748684.8U CN205940494U (en) | 2016-07-14 | 2016-07-14 | High on - line measuring device of turbo generator set rotor jack -up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205940494U true CN205940494U (en) | 2017-02-08 |
Family
ID=57928287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620748684.8U Active CN205940494U (en) | 2016-07-14 | 2016-07-14 | High on - line measuring device of turbo generator set rotor jack -up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205940494U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248007A (en) * | 2016-07-14 | 2016-12-21 | 贵州电网有限责任公司电力科学研究院 | A kind of rotor of turbogenerator set jack-up height on-line measurement device and method |
-
2016
- 2016-07-14 CN CN201620748684.8U patent/CN205940494U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248007A (en) * | 2016-07-14 | 2016-12-21 | 贵州电网有限责任公司电力科学研究院 | A kind of rotor of turbogenerator set jack-up height on-line measurement device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103335589B (en) | The scaling method of welded rail temperature stress sensing node | |
| CN105424160A (en) | Method for realizing blade synchronous vibration parameter identification | |
| CN101694374B (en) | Rapid detecting device and detecting method of precision of blades of gas turbine | |
| CN104075677A (en) | Method and system for measuring concentricity and tip clearance of rotor and stator of aero-engine | |
| CN102734148A (en) | Water pump type test method | |
| CN103175679A (en) | Comprehensive test system for characteristics of rotors of four-rotor aircrafts | |
| CN107024240B (en) | The dynamic check method in steam turbine monitor protection instrument loop | |
| CN104792306B (en) | A kind of inclination angle measurement method | |
| CN102818545B (en) | Bearing ring bore is full-parameter measuring system for ultrahigh and the method for conical bore | |
| CN105234745A (en) | Method for separating and handling thermal error, roundness error and turning error of main shaft of machine tool | |
| CN110686764A (en) | Method for measuring asynchronous vibration frequency of constant-speed blade based on full-phase difference principle | |
| CN104501714A (en) | Online monitoring device and online monitoring method for eccentric azimuth angle of steam turbine rotor | |
| CN205940494U (en) | High on - line measuring device of turbo generator set rotor jack -up | |
| CN107014479A (en) | Steam turbine monitor protection instrument vibrates the dynamic check method of class measuring loop | |
| CN102778335A (en) | Anisotropic rotor holographic dynamic balancing method based on equivalent initial phase vector | |
| CN109115497A (en) | The method for measuring rotor of turbogenerator set diameter of axle location variation in bearing shell | |
| CN203705120U (en) | Auxiliary tool for calibrating parameter of test bench | |
| CN103760376A (en) | Engine rotating speed measuring instrument based on vibration principle and test method thereof | |
| CN104482838A (en) | Propeller blade measuring technology | |
| CN106248007A (en) | A kind of rotor of turbogenerator set jack-up height on-line measurement device and method | |
| CN104930953B (en) | The four-point method measurement apparatus and measuring method of machine part cylindricity error | |
| CN205262375U (en) | Utensil is examined to keyway degree of depth on circular conical surface | |
| CN106052956A (en) | Force-hammer sensitivity automatic calibration device and method | |
| CN205785802U (en) | A kind of steam-electric generating set shafting bias and phase measurement device thereof | |
| CN111766396B (en) | Device and method for measuring time constant of rotating speed probe and preamplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |