CN111963354B - Hydroelectric set idle test operation automatic test device - Google Patents
Hydroelectric set idle test operation automatic test device Download PDFInfo
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- CN111963354B CN111963354B CN202010701569.6A CN202010701569A CN111963354B CN 111963354 B CN111963354 B CN 111963354B CN 202010701569 A CN202010701569 A CN 202010701569A CN 111963354 B CN111963354 B CN 111963354B
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- 230000001681 protective effect Effects 0.000 claims description 5
- 208000037805 labour Diseases 0.000 abstract description 5
- 101150054854 POU1F1 gene Proteins 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses an automatic test device for idle test operation of a hydroelectric generating set; the hydraulic turbine generator set comprises a turbine pit and a hydraulic turbine generator set arranged in the turbine pit, wherein the hydraulic turbine generator set comprises a hydraulic turbine runner; the water turbine runner is provided with a rotating shaft; a rotating shaft measuring device is arranged on the rotating shaft; the measuring devices are arranged at the corresponding bearings; a first electric telescopic rod is arranged on the inner side of the rotating shaft measuring device; a second electric telescopic rod and a third electric telescopic rod are arranged on the inner side of the rotating shaft measuring device; a dial indicator is arranged on the output shaft of the second electric telescopic rod; a rotating speed measuring instrument is arranged on the output shaft of the third electric telescopic rod; and temperature measuring instruments are arranged on the left side and the right side of the rotating shaft measuring device. Through setting up pivot measuring device, in the experimentation, can automatic measure bearing oil temperature, tile temperature and vibration, the throw data of axle, practiced thrift a large amount of labours, improved work efficiency, this device is rational in infrastructure, the operation of being convenient for.
Description
Technical Field
The invention belongs to the technical field of experimental equipment, and particularly relates to an automatic test device for idle test operation of a hydroelectric generating set.
Background
According to the regulations of the technical specification for mounting the water turbine generator set and the guide rules for overhauling the water turbine generator set, the water turbine generator set needs to be subjected to idle running test operation before being put into operation after being mounted for the first time, and the water turbine generator set needs to be subjected to idle running test operation before being put into operation after being overhauled for the A level. The idle test operation of the water turbine generator set aims at detecting the oil temperature and the tile temperature of each bearing, the vibration conditions of the water turbine and the generator in the horizontal direction and the vertical direction and reflecting the installation quality of the water turbine generator set.
At present, the acquisition and analysis of oil temperature, bearing temperature, vibration and swing data of each bearing in idle test operation of the water turbine generator set completely depend on manpower, a large number of signal acquisition personnel and calculation and analysis personnel are needed in each idle test of the water turbine generator set, a large amount of manpower is needed to be invested, and the working efficiency is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the automatic test device for the idle test running of the hydroelectric generating set.
The invention provides the following technical scheme:
an automatic test device for idle test operation of a hydroelectric generating set; the hydraulic turbine generator set comprises a turbine pit and a hydraulic turbine generator set arranged in the turbine pit, wherein the hydraulic turbine generator set comprises a hydraulic turbine runner; the water turbine runner is provided with a rotating shaft; a rotating shaft measuring device is arranged on the rotating shaft; the rotating shaft measuring devices are arranged at corresponding bearings; a first electric telescopic rod is arranged on the inner side of the rotating shaft measuring device; a second electric telescopic rod and a third electric telescopic rod are arranged on the inner side of the rotating shaft measuring device; a dial indicator is arranged on the output shaft of the second electric telescopic rod; a rotating speed measuring instrument is arranged on the output shaft of the third electric telescopic rod; and temperature measuring instruments are arranged on the left side and the right side of the rotating shaft measuring device.
Preferably, the rotating shaft measuring device comprises a first measuring device and a second measuring device; the rotating shaft measuring device is of a hollow cylindrical structure; a fixing column and a fixing groove are correspondingly arranged on the opposite surfaces of the first measuring device and the second measuring device; the first measuring device and the second measuring device are connected through fastening of the fixing column and the fixing groove.
Preferably, the second electric telescopic rod and the third electric telescopic rod are arranged opposite to the axis of the rotating shaft measuring device; the second electric telescopic handle and the third electric telescopic handle output shaft are provided with sliding blocks, the rotating shaft measuring device is provided with a sliding groove, and the square block is arranged in the sliding groove.
Preferably, the first measuring device and the second measuring device are both provided with a first electric telescopic rod; the first electric telescopic rod is arranged opposite to the axis of the rotating shaft measuring device; the number of the first electric telescopic rods on the first measuring device is more than or equal to 3.
Preferably, a protective sleeve is arranged on the output shaft of the first electric telescopic rod.
Preferably, the dial indicator, the rotating speed measuring instrument and the temperature measuring instrument are all electrically connected with the controller; the controller is connected with a display; the controller is connected with an alarm and a warning lamp.
Preferably, the surface of the rotating shaft measuring device is provided with a groove.
Preferably, a fixing ring is arranged in the groove; the fixing ring is used for fixing the first measuring device and the second measuring device.
Preferably, the bearings on the rotating shaft are provided with rotating shaft measuring devices.
Preferably, a turntable is arranged on the inner side of the rotating shaft measuring device; the carousel is connected with the motor, second electric telescopic handle and third electric telescopic handle all set up on the carousel.
Preferably, in order to increase the stability of the rotating shaft measuring device in operation, the included angle alpha between two adjacent first electric telescopic rods is 70-110 degrees; an included angle beta between the first electric telescopic rod and the second electric telescopic rod is 30-60 degrees; simultaneously, the following requirements are met: sin alpha sin beta is not less than 0.50 and not more than 0.85.
Preferably, in order to improve the measurement accuracy, the outer diameter R1 and the inner diameter R2 of the rotating shaft measuring device satisfy the following relationship:
R2sinα=m· R1sinβ；
in the formula: r1 is the outer diameter of the rotating shaft measuring device, and the unit is cm;
r2 is the inner diameter of the rotating shaft measuring device, and the unit is cm;
m is a correlation coefficient and has a value range of 4.5-5.8.
Preferably, the method for the automatic test of the idle test running of the hydroelectric generating set comprises the following steps:
s1, sleeving the rotating shaft measuring device on the rotating shaft and fixing the rotating shaft measuring device with the machine pit;
s2, adjusting the angles of the dial indicator and the rotating speed measuring instrument to ensure that the dial indicator and the rotating speed measuring instrument are opposite to the axis of the rotating shaft;
s3, slowly opening the guide vane to about 5-6% by the hydroelectric generating set, and closing the guide vane to 0% by the device after the standby set starts to rotate, wherein the hydroelectric generating set is still in a creeping state;
s4, measuring data, namely measuring oil temperature and tile temperature of each bearing of the water turbine generator set, vibration data of the water turbine and the generator in the horizontal direction and the vertical direction by using the rotating shaft measuring device; if the data is in the limit range, automatically increasing the rotation speed of the unit to 50% Ne;
and S5, the rotating shaft measuring device confirms that all parts are normal, and automatically and gradually increases the speed of the unit to 100 percent Ne and finally stabilizes the unit at the rated rotating speed. The device automatically records the starting opening and the no-load opening of the unit under the waterhead at that time;
s6, data comparison, namely, taking the rotating speed of the unit measured by the rotating speed measuring instrument as a reference, when the rotating speed of the unit reaches a rated rotating speed, automatically comparing the rotating speed value of the unit measured by the standard frequency table with the rotating speed value of the hydroelectric generating set with the rotating speed meter, recording the comparison result, and if the deviation exceeds 1%, automatically giving an alarm by voice and making an identification, and sending out a light alarm by a warning lamp;
s7, recording data, wherein in the speed increasing process, the device automatically monitors and records the oil temperature, the tile temperature, the water turbine and the vibration data of the water turbine generator set in the horizontal direction and the vertical direction of each bearing;
preferably, in step S4, if the received oil temperature, the tile temperature, the water turbine, and the vibration data of the generator in the horizontal direction and the vertical direction of each bearing of the hydro-turbo generator set exceed the limit value ranges, a voice and sound-light alarm is automatically sent out, the display identifies the position exceeding the limit value, and the shutdown process is started at the same time.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the automatic test device for the idle test running of the hydroelectric generating set, the rotating shaft measuring device is arranged, and when the rotating shaft is measured, the rotating shaft is fixed in the machine pit through the first electric telescopic rod, so that the operation is convenient, the fixing is easy, and the labor force is saved.
(2) The invention relates to an automatic test device for idle test operation of a hydroelectric generating set, wherein a rotary table is arranged on the inner side of a rotating shaft measuring device; the carousel is connected with the motor, second electric telescopic handle and third electric telescopic handle all set up on the carousel, through rotating the carousel, easily adjust percentage table and tachometry appearance's angle, make percentage table and tachometry appearance can just to the pivot, have improved measurement accuracy.
(3) The automatic test device for the idle test running of the hydroelectric generating set is high in working efficiency and saves a large amount of labor.
(4) According to the automatic test device for the idle test operation of the hydroelectric generating set, disclosed by the invention, the working stability of the device is improved and the measurement precision of the device is improved by limiting the relation between the outer diameter R1 and the inner diameter R2 of the pressure rotating shaft measurement device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of a first measuring device and a second measuring device of the present invention.
Fig. 3 is a schematic view of the internal structure of the spindle measuring device of the present invention.
Fig. 4 is a left side sectional view of fig. 3 of the present invention.
Fig. 5 is a schematic left side view of fig. 3 of the present invention.
Fig. 6 is a schematic right view of the first measuring device of fig. 2 of the present invention.
Fig. 7 is a schematic view of the first electric telescopic rod of the present invention.
In the figure: 1. a machine pit; 2. a rotating shaft measuring device; 3. a bearing; 4. a rotating shaft; 5. a turbine runner; 6. a first measuring device; 7. a first electric telescopic rod; 8. a second electric telescopic rod; 9. a temperature measuring instrument; 10. fixing a column; 11. fixing grooves; 12. a dial indicator; 13. a protective sleeve; 14. a third electric telescopic rod; 15. a rotating speed measuring instrument; 16. a second measuring device; 17. and (4) a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1-7, an automatic test device for idle test operation of a hydroelectric generating set; the hydraulic turbine generator set comprises a machine pit 1 and a hydraulic turbine generator set arranged in the machine pit 1, wherein the hydraulic turbine generator set comprises a hydraulic turbine runner 5; the water turbine runner 5 is provided with a rotating shaft 4; the rotating shaft 4 is provided with a rotating shaft measuring device 2; the rotating shaft measuring devices 2 are arranged at the corresponding bearings 3; a first electric telescopic rod 7 is arranged on the inner side of the rotating shaft measuring device 2; a second electric telescopic rod 8 and a third electric telescopic rod 14 are arranged on the inner side of the rotating shaft measuring device 2; a dial indicator 12 is arranged on an output shaft of the second electric telescopic rod 8, and the dial indicator 12 is used for measuring vibration data of a water turbine of the water turbine generator set and the generator set in the vertical direction; the output shaft of the third electric telescopic rod 14 is provided with a rotating speed measuring instrument 15 for measuring the rotating speed of the rotating shaft 4; the left side and the right side of the rotating shaft measuring device 2 are provided with temperature measuring instruments 9 and dial indicators 12, the temperature measuring instruments 9 are arranged right opposite to the bearings, the number of the temperature measuring instruments 9 is at least two, the temperature measuring instruments are used for measuring the oil temperature and the tile temperature of the bearings, and the dial indicators 12 are used for measuring the vibration data of the water turbine generator set and the horizontal direction of the generator.
The rotating shaft measuring device 2 comprises a first measuring device 6 and a second measuring device 16; the rotating shaft measuring device 2 is of a hollow cylindrical structure, the inner diameter of the rotating shaft measuring device 2 is larger than the diameter of the rotating shaft 4, and a fixing column 10 and a fixing groove 11 are correspondingly arranged on the surfaces, opposite to the first measuring device 6 and the second measuring device 16, of the rotating shaft measuring device; the first measuring device 6 and the second measuring device 16 are connected with the fixing groove 11 through the fixing column 10 in a buckling mode, when data are measured, the rotating shaft measuring device 2 is fixed in the machine pit 1, and the rotating shaft measuring device 2 and the rotating shaft do not interfere with each other.
The second electric telescopic rod 8 and the third electric telescopic rod 14 are arranged opposite to the axis of the rotating shaft measuring device 2; second electric telescopic handle 8 and the 14 output shafts of third electric telescopic handle are provided with the slider, pivot measuring device 2 is provided with the spout, square piece sets up in the spout, through being provided with spout and slider, can effectually avoid the rotation of second electric telescopic handle 8 and the 14 output shafts of third electric telescopic handle.
The first measuring device 6 and the second measuring device 16 are both provided with a first electric telescopic rod 7; the first electric telescopic rod 7 is arranged opposite to the axis of the rotating shaft measuring device 2, and the axis of the first electric telescopic rod 7 is vertical to the axis of the rotating shaft measuring device 2; the number of the first electric telescopic rods 7 on the first measuring device 6 is more than or equal to 3.
Be provided with protective sheath 13 on the 7 output shafts of first electric telescopic handle, the effectual device that has protected has avoided the friction fish tail between the device.
The dial indicator 12, the rotating speed measuring instrument 15 and the temperature measuring instrument 9 are all electrically connected with the controller, and the dial indicator 12, the rotating speed measuring instrument 15 and the temperature measuring instrument 9 transmit the measuring data to the controller and display the data on the display.
The surface of the rotating shaft measuring device 2 is provided with a groove 17. A fixing ring is arranged in the groove 17, and the first measuring device 6 and the second measuring device 16 are fixed through the fixing ring; the fixing ring serves to fix the first measuring device 6 and the second measuring device 16. And the bearings 3 on the rotating shaft 4 are provided with rotating shaft measuring devices 2. A rotary table is arranged on the inner side of the rotating shaft measuring device 2; the carousel is connected with the motor, second electric telescopic handle 8 and third electric telescopic handle 14 all set up on the carousel, adjust the angle of second electric telescopic handle 8 and third electric telescopic handle 14 through rotating the carousel, make percentage table 12, rotational speed measuring apparatu 15 just to 4 axle centers of pivot.
The working principle is as follows: when data are measured, the rotating shaft measuring device 2 is fixed in the machine pit 1, the rotating shaft measuring device 2 and the rotating shaft do not interfere with each other, the angles of the dial indicator 12 and the rotating speed measuring instrument 15 are adjusted, the dial indicator 12 and the rotating speed measuring instrument 15 are enabled to be opposite to the rotating shaft 4, the second electric telescopic rod 8 and the third electric telescopic rod 14 are started, the dial indicator 12 and the rotating speed measuring instrument 15 are adjusted to appropriate positions, the water-turbine generator set is started, and data are measured on the water-turbine generator set.
Example two:
as shown in fig. 1-7, an automatic test device for idle test operation of a hydroelectric generating set; the hydraulic turbine generator set comprises a machine pit 1 and a hydraulic turbine generator set arranged in the machine pit 1, wherein the hydraulic turbine generator set comprises a hydraulic turbine runner 5; the water turbine runner 5 is provided with a rotating shaft 4; the rotating shaft 4 is provided with a rotating shaft measuring device 2; the rotating shaft measuring devices 2 are arranged at the corresponding bearings 3; a first electric telescopic rod 7 is arranged on the inner side of the rotating shaft measuring device 2; a second electric telescopic rod 8 and a third electric telescopic rod 14 are arranged on the inner side of the rotating shaft measuring device 2; a dial indicator 12 is arranged on an output shaft of the second electric telescopic rod 8, and the dial indicator 12 is used for measuring vibration data of a water turbine of the water turbine generator set and the generator set in the vertical direction; the output shaft of the third electric telescopic rod 14 is provided with a rotating speed measuring instrument 15 for measuring the rotating speed of the rotating shaft 4; the left side and the right side of the rotating shaft measuring device 2 are provided with temperature measuring instruments 9 and dial indicators 12, the temperature measuring instruments 9 are arranged right opposite to the bearings, the number of the temperature measuring instruments 9 is at least two, the temperature measuring instruments are used for measuring the oil temperature and the tile temperature of the bearings, and the dial indicators 12 are used for measuring the vibration data of the water turbine generator set and the horizontal direction of the generator.
The rotating shaft measuring device 2 comprises a first measuring device 6 and a second measuring device 16; the rotating shaft measuring device 2 is of a hollow cylindrical structure, the inner diameter of the rotating shaft measuring device 2 is larger than the diameter of the rotating shaft 4, and a fixing column 10 and a fixing groove 11 are correspondingly arranged on the surfaces, opposite to the first measuring device 6 and the second measuring device 16, of the rotating shaft measuring device; the first measuring device 6 and the second measuring device 16 are connected with the fixing groove 11 through the fixing column 10 in a buckling mode, when data are measured, the rotating shaft measuring device 2 is fixed in the machine pit 1, and the rotating shaft measuring device 2 and the rotating shaft do not interfere with each other.
The second electric telescopic rod 8 and the third electric telescopic rod 14 are arranged opposite to the axis of the rotating shaft measuring device 2; second electric telescopic handle 8 and the 14 output shafts of third electric telescopic handle are provided with the slider, pivot measuring device 2 is provided with the spout, square piece sets up in the spout, through being provided with spout and slider, can effectually avoid the rotation of second electric telescopic handle 8 and the 14 output shafts of third electric telescopic handle.
The first measuring device 6 and the second measuring device 16 are both provided with a first electric telescopic rod 7; the first electric telescopic rod 7 is arranged opposite to the axis of the rotating shaft measuring device 2, and the axis of the first electric telescopic rod 7 is vertical to the axis of the rotating shaft measuring device 2; the number of the first electric telescopic rods 7 on the first measuring device 6 is more than or equal to 3.
Be provided with protective sheath 13 on the 7 output shafts of first electric telescopic handle, the effectual friction fish tail that has protected between the device.
The dial indicator 12, the rotating speed measuring instrument 15 and the temperature measuring instrument 9 are all electrically connected with the controller, and the dial indicator 12, the rotating speed measuring instrument 15 and the temperature measuring instrument 9 transmit the measuring data to the controller and display the data on the display.
The surface of the rotating shaft measuring device 2 is provided with a groove 17. A fixing ring is arranged in the groove 17, and the first measuring device 6 and the second measuring device 16 are fixed through the fixing ring; the fixing ring serves to fix the first measuring device 6 and the second measuring device 16. And the bearings 3 on the rotating shaft 4 are provided with rotating shaft measuring devices 2. A rotary table is arranged on the inner side of the rotating shaft measuring device 2; the carousel is connected with the motor, second electric telescopic handle 8 and third electric telescopic handle 14 all set up on the carousel, adjust the angle of second electric telescopic handle 8 and third electric telescopic handle 14 through rotating the carousel, make percentage table 12, rotational speed measuring apparatu 15 just to 4 axle centers of pivot.
Preferably, in order to increase the stability of the rotating shaft measuring device in operation, the included angle alpha between two adjacent first electric telescopic rods is 70-110 degrees; an included angle beta between the first electric telescopic rod and the second electric telescopic rod is 30-60 degrees; simultaneously, the following requirements are met: sin alpha sin beta is not less than 0.50 and not more than 0.85.
In order to improve the measurement accuracy, the outer diameter R1 and the inner diameter R2 of the rotating shaft measuring device 2 satisfy the following relationship:
R2sinα=m· R1sinβ；
in the formula: r1 is the outer diameter of the rotating shaft measuring device, and the unit is cm;
r2 is the inner diameter of the rotating shaft measuring device, and the unit is cm;
m is a correlation coefficient and has a value range of 4.5-5.8.
When the above relation is satisfied, the device measurement accuracy is high.
Example three:
in the experimental process, in order to automatically measure the oil temperature and the bearing temperature of the bearing and the vibration and swing data of the shaft, save labor force and improve working efficiency, the invention also discloses a method for the automatic test of the idle test running of the water-turbine generator set, which comprises the following steps:
s1, sleeving the rotating shaft measuring device on the rotating shaft and fixing the rotating shaft measuring device with the machine pit;
s2, adjusting the angles of the dial indicator and the rotating speed measuring instrument to ensure that the dial indicator and the rotating speed measuring instrument are opposite to the axis of the rotating shaft;
s3, slowly opening the guide vane to about 5-6% by the hydroelectric generating set, and closing the guide vane to 0% by the device after the standby set starts to rotate, wherein the hydroelectric generating set is still in a creeping state;
s4, measuring data, namely measuring oil temperature and tile temperature of each bearing of the water turbine generator set, vibration data of the water turbine and the generator in the horizontal direction and the vertical direction by using the rotating shaft measuring device; if the data is in the limit range, automatically increasing the rotation speed of the unit to 50% Ne;
and S5, the rotating shaft measuring device confirms that all parts are normal, and automatically and gradually increases the speed of the unit to 100 percent Ne and finally stabilizes the unit at the rated rotating speed. The device automatically records the starting opening and the no-load opening of the unit under the waterhead at that time;
s6, data comparison, namely, taking the rotating speed of the unit measured by the rotating speed measuring instrument as a reference, when the rotating speed of the unit reaches a rated rotating speed, automatically comparing the rotating speed value of the unit measured by the standard frequency table with the rotating speed value of the hydroelectric generating set with the rotating speed meter, recording the comparison result, and if the deviation exceeds 1%, automatically giving an alarm by voice and making an identification, and sending out a light alarm by a warning lamp;
s7, recording data, wherein in the speed increasing process, the device automatically monitors and records the oil temperature, the tile temperature, the water turbine and the vibration data of the water turbine generator set in the horizontal direction and the vertical direction of each bearing;
in step S4, if the received vibration data of the bearings of the hydro-turbo generator set, such as oil temperature, tile temperature, water turbine, and generator in horizontal and vertical directions, exceed the limit range, the alarm is automatically sent out by voice and sound, the display identifies the position exceeding the limit, and the shutdown process is started.
The device that obtains through above-mentioned technical scheme is a hydroelectric set idling test operation automatic test device, through setting up pivot measuring device 2, in the experimentation, can automatic measure bearing oil temperature, tile temperature and vibration, the throw degree data of axle, practiced thrift a large amount of labours, improved work efficiency, this device is rational in infrastructure, the operation of being convenient for.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An automatic test device for idle test operation of a hydroelectric generating set; the hydraulic turbine generator set comprises a machine pit (1) and a hydraulic turbine generator set arranged in the machine pit (1), wherein the hydraulic turbine generator set comprises a hydraulic turbine runner (5); the water turbine rotating wheel (5) is provided with a rotating shaft (4); the device is characterized in that a rotating shaft measuring device (2) is arranged on the rotating shaft (4); the rotating shaft measuring devices (2) are arranged at the corresponding bearings (3); a first electric telescopic rod (7) is arranged on the inner side of the rotating shaft measuring device (2); a second electric telescopic rod (8) and a third electric telescopic rod (14) are arranged on the inner side of the rotating shaft measuring device (2); the output shaft of the second electric telescopic rod (8) is provided with a dial indicator (12); the output shaft of the third electric telescopic rod (14) is provided with a rotating speed measuring instrument (15); the temperature measuring instruments (9) are arranged on the left side and the right side of the rotating shaft measuring device (2), a groove (17) is formed in the surface of the rotating shaft measuring device (2), and a fixing ring is arranged in the groove (17); the rotating shaft measuring device (2) comprises a first measuring device (6) and a second measuring device (16); the rotating shaft measuring device (2) is of a hollow cylindrical structure; a fixing column (10) and a fixing groove (11) are correspondingly arranged on the opposite surfaces of the first measuring device (6) and the second measuring device (16); the first measuring device (6) and the second measuring device (16) are connected with each other in a buckling mode through a fixing column (10) and a fixing groove (11); the second electric telescopic rod (8) and the third electric telescopic rod (14) are arranged opposite to the axis of the rotating shaft measuring device (2); the output shafts of the second electric telescopic rod (8) and the third electric telescopic rod (14) are provided with sliding blocks, the rotating shaft measuring device (2) is provided with a sliding groove, and the sliding blocks are arranged in the sliding groove.
2. The automatic test device for the idle test running of the hydroelectric generating set according to claim 1, wherein the first measuring device (6) and the second measuring device (16) are both provided with a first electric telescopic rod (7); the first electric telescopic rod (7) is arranged opposite to the axis of the rotating shaft measuring device (2); the number of the first electric telescopic rods (7) on the first measuring device (6) is more than or equal to 3.
3. The automatic test device for the idle test running of the hydroelectric generating set according to claim 1, wherein a protective sleeve (13) is arranged on the output shaft of the first electric telescopic rod (7).
4. The automatic test device for the idle test operation of the hydroelectric generating set according to claim 1, wherein the dial indicator (12), the rotating speed measuring instrument (15) and the temperature measuring instrument (9) are electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701569.6A CN111963354B (en) | 2020-07-21 | 2020-07-21 | Hydroelectric set idle test operation automatic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701569.6A CN111963354B (en) | 2020-07-21 | 2020-07-21 | Hydroelectric set idle test operation automatic test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111963354A CN111963354A (en) | 2020-11-20 |
| CN111963354B true CN111963354B (en) | 2021-12-21 |
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Family Applications (1)
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| CN202010701569.6A Expired - Fee Related CN111963354B (en) | 2020-07-21 | 2020-07-21 | Hydroelectric set idle test operation automatic test device |
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| JP3372428B2 (en) * | 1996-07-31 | 2003-02-04 | 三菱重工業株式会社 | Measuring device for torsional vibration and longitudinal vibration of rotating shaft |
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| JPS6276423A (en) * | 1985-09-30 | 1987-04-08 | Shimadzu Corp | Chucking device for balance test machine |
| US5353640A (en) * | 1993-05-03 | 1994-10-11 | Industrial Technology Research Institute | Air-jet driven dynamic balance test apparatus |
| CN201173850Y (en) * | 2008-03-17 | 2008-12-31 | 孙连贵 | Bearing vibration measuring instrument |
| CN101430358A (en) * | 2008-12-10 | 2009-05-13 | 河南国网宝泉抽水蓄能有限公司 | Head-machine first water pump behavior full-group start test method for pump storage plant |
| CN103674544A (en) * | 2013-11-26 | 2014-03-26 | 南通威明精工机械有限公司 | Revolving shaft vibration detector |
| CN205079854U (en) * | 2015-10-23 | 2016-03-09 | 周学龙 | Measurable quantity changes shaft vibration's on -line monitoring system |
| CN208568280U (en) * | 2018-08-08 | 2019-03-01 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of rotating machinery shaft vibration contact measuring apparatus |
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| CN111963354A (en) | 2020-11-20 |
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