CN113640005B - Steam turbine vibration monitoring system and monitoring method thereof - Google Patents
Steam turbine vibration monitoring system and monitoring method thereof Download PDFInfo
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- CN113640005B CN113640005B CN202110946856.8A CN202110946856A CN113640005B CN 113640005 B CN113640005 B CN 113640005B CN 202110946856 A CN202110946856 A CN 202110946856A CN 113640005 B CN113640005 B CN 113640005B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 147
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000008054 signal transmission Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000002159 abnormal effect Effects 0.000 claims abstract description 12
- 238000012423 maintenance Methods 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 124
- 238000001514 detection method Methods 0.000 claims description 4
- 238000013500 data storage Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Control Of Turbines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a turbine vibration monitoring system and a monitoring method thereof, wherein the turbine vibration monitoring system comprises a vibration monitoring sensor, a signal analog-to-digital converter, a core data processor, a network signal transmission module, a vibration monitoring mobile terminal and an abnormal vibration alarm module, wherein the monitoring end of the vibration monitoring sensor is connected with a transmission shaft of a turbine, the signal output end of the vibration monitoring sensor is connected with the signal input end of the core data processor through the signal analog-to-digital converter, the alarm signal output end of the core data processor is connected with the abnormal vibration alarm module, and the network transmission end of the core data processor is in wireless connection with the vibration monitoring mobile terminal through the network signal transmission module. The vibration monitoring sensor provided by the invention has the advantages that the monitoring is accurate, the vibration amplitude can be intuitively judged, the timely maintenance of staff is facilitated, the vibration monitoring signals are timely transmitted to each maintainer, and the timely discovery and maintenance of the maintainers are facilitated, so that the potential safety hazard of the steam turbine is further reduced.
Description
Technical Field
The invention relates to safety monitoring equipment of a steam turbine, in particular to a vibration monitoring system and a vibration monitoring method of the steam turbine.
Background
The steam turbine is also called a steam turbine engine, and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and simultaneously does work outwards. Steam turbines are the main equipment of modern thermal power plants and are also used in metallurgical industry, chemical industry and ship power plants. The turbine equipment is great, and the vibrations of steam turbine are great and do not produce serious potential safety hazard very easily when not obtaining timely maintenance, and prior art is not accurate enough to the vibrations monitoring of steam turbine, and equipment is huge to be difficult to monitor, and maintainer can not in time judge the vibrations condition directly perceivedly, leads to in time finding the vibrations condition to the maintenance is untimely, therefore, has the improvement room.
Disclosure of Invention
The invention aims to provide a turbine vibration monitoring system and a turbine vibration monitoring method.
In order to achieve the above purpose, the invention is implemented according to the following technical scheme:
the steam turbine vibration monitoring system comprises a vibration monitoring sensor, a signal analog-to-digital converter, a core data processor, a network signal transmission module, a vibration monitoring mobile terminal and an abnormal vibration alarm module, wherein the monitoring end of the vibration monitoring sensor is connected with a transmission shaft of a steam turbine, the signal output end of the vibration monitoring sensor is connected with the signal input end of the signal analog-to-digital converter, the signal output end of the signal analog-to-digital converter is connected with the signal input end of the core data processor, the alarm signal output end of the core data processor is connected with the abnormal vibration alarm module, the network transmission end of the core data processor is connected with the network signal transmission module, and the network signal transmission module is in wireless connection with the vibration monitoring mobile terminal.
Further, the system also comprises a vibration monitoring computer, wherein the vibration monitoring computer is connected with the network signal transmission module through a network data line.
Further, the system also comprises an alarm data recording module, wherein the alarm data recording module is connected with the data transmission end of the core data processor.
Specifically, vibrations monitoring sensor includes turbine shaft flange, turbine shaft coaxial carousel and displacement sensor, the one end of turbine shaft flange can dismantle fixed connection with the transmission shaft of steam turbine, turbine shaft coaxial carousel with coaxial coupling between the turbine shaft flange, the both sides and the upper end of turbine shaft coaxial carousel all set up one displacement sensor, displacement sensor's detection end with the edge contact of turbine shaft coaxial carousel.
Further, the displacement sensor is arranged on the displacement sensor fixing frame, two sides and the upper end of the displacement sensor fixing frame are respectively provided with the displacement sensor, and the end face of the coaxial turntable of the turbine shaft is close to the end face of the displacement sensor fixing frame.
Further, displacement sensor includes displacement monitoring contact bar, displacement monitoring sliding plate, displacement monitoring sliding sensor, displacement sensor horizontal fixing base and the vertical fixing base of displacement sensor, the one end of displacement monitoring contact bar with the edge contact of the coaxial carousel of turbine shaft, the other end of displacement monitoring contact bar with displacement monitoring sliding plate fixed connection, displacement monitoring sliding plate with pass through between the horizontal fixing base of displacement sensor displacement monitoring sliding sensor sliding connection, the horizontal fixing base of displacement sensor passes through the vertical fixing base of displacement sensor with displacement sensor mount fixed connection.
As an improvement, the displacement monitoring contact rod is connected with the movable plate, the movable plate fixed pressing plate and the movable plate fixed connecting plate through the contact rod, the displacement monitoring contact rod is connected with the movable plate fixed connecting plate through the contact rod, the movable plate is connected with the movable plate fixed connecting plate through the movable plate fixed pressing plate, and the movable plate fixed connecting plate is connected with the movable plate fixed connecting plate.
As an improvement, the displacement monitoring sliding plate with the both sides of displacement sensor horizontal fixing base are provided with sliding plate spacing piece, remove spacing waist type hole and sliding plate spacing bolt, one side of sliding plate spacing piece with the side fixed connection of displacement sensor horizontal fixing base, remove spacing waist type hole set up in the opposite side of sliding plate spacing piece, sliding plate spacing bolt passes remove spacing waist type hole with the side fixed connection of displacement monitoring sliding plate, sliding plate spacing bolt can remove spacing waist type downthehole activity.
As an improvement, a vibration amplitude judging screw rod is arranged between the displacement monitoring sliding plate and the displacement sensor horizontal fixing seat, the vibration amplitude judging screw rod is in threaded connection with the displacement monitoring sliding plate, and the end part of the vibration amplitude judging screw rod is in contact with the outer side edge of the displacement sensor horizontal fixing seat.
The invention relates to a monitoring method of a turbine vibration monitoring system, which comprises the following steps:
s1: the vibration monitoring sensor is connected with a rotating shaft of the steam turbine;
s2: when the vibration monitoring sensor monitors the vibration of the rotating shaft of the steam turbine, the signal output by the vibration monitoring sensor is converted into a digital signal through the signal analog-to-digital converter and is transmitted to the core data processor;
s3: judging vibration intensity through a core data processor, and alarming through an abnormal vibration alarming module when vibration reaches a set standard, and informing a worker of knowing to perform maintenance; meanwhile, signals are sent to the vibration monitoring mobile terminal, the vibration monitoring computer and the alarm data recording module, the vibration monitoring mobile terminal is convenient for workers or managers who are not on site to know, the vibration monitoring computer is used for managing and storing, and the alarm data recording module is used for recording data storage.
The beneficial effects of the invention are as follows:
compared with the prior art, the vibration monitoring sensor provided by the invention has the advantages that the monitoring is accurate, the vibration amplitude can be intuitively judged, the timely maintenance of staff is facilitated, the vibration monitoring signals are timely transmitted to each maintainer, and the timely discovery and maintenance of the maintainers are facilitated, so that the potential safety hazard of the steam turbine is further reduced, and the vibration monitoring system has popularization and application values.
Drawings
FIG. 1 is a schematic block diagram of a system architecture of the present invention;
FIG. 2 is a schematic diagram of a side structure of a displacement sensor according to the present invention;
FIG. 3 is a schematic view of another side structure of the displacement sensor of the present invention;
fig. 4 is a partial enlarged view of a portion a in fig. 3.
In the figure: the vibration monitoring system comprises a vibration monitoring sensor 1, a signal analog-to-digital converter 2, a core data processor 3, a network signal transmission module 4, a vibration monitoring mobile terminal 5, a vibration monitoring computer 6, an abnormal vibration alarm module 7, an alarm data recording module 8, a turbine shaft connecting flange 9, a turbine shaft coaxial rotary table 10, a displacement sensor fixing frame 11, a displacement monitoring contact rod 12, a contact rod connecting movable plate 13, a movable plate fixing pressing plate 14, a movable plate fixing connecting plate 15, a displacement monitoring sliding plate 16, a sliding plate limiting piece 17, a movable limiting waist-shaped hole 18, a sliding plate limiting bolt 19, a vibration amplitude judging screw rod 20, a displacement monitoring sliding sensor 21, a displacement sensor horizontal fixing seat 22 and a displacement sensor vertical fixing seat 23.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the invention are for purposes of illustration, but are not intended to be limiting.
As shown in fig. 1: the steam turbine vibration monitoring system comprises a vibration monitoring sensor 1, a signal analog-to-digital converter 2, a core data processor 3, a network signal transmission module 4, a vibration monitoring mobile terminal 5 and an abnormal vibration alarm module 7, wherein a monitoring end of the vibration monitoring sensor 1 is connected with a transmission shaft of a steam turbine, a signal output end of the vibration monitoring sensor 1 is connected with a signal input end of the signal analog-to-digital converter 2, a signal output end of the signal analog-to-digital converter 2 is connected with a signal input end of the core data processor 3, an alarm signal output end of the core data processor 3 is connected with the abnormal vibration alarm module 7, a network transmission end of the core data processor 3 is connected with the network signal transmission module 4, and the network signal transmission module 4 is in wireless connection with the vibration monitoring mobile terminal 5.
Further, the vibration monitoring computer 6 is further included, and the vibration monitoring computer 6 is connected with the network signal transmission module 4 through a network data line.
Further, the system also comprises an alarm data recording module 8, wherein the alarm data recording module 8 is connected with the data transmission end of the core data processor 3.
As shown in fig. 2-4: the vibration monitoring sensor 1 comprises a turbine shaft connecting flange 9, a turbine shaft coaxial rotary disc 10 and a displacement sensor, one end of the turbine shaft connecting flange 9 is detachably and fixedly connected with a transmission shaft of the turbine, the turbine shaft coaxial rotary disc 10 is coaxially connected with the turbine shaft connecting flange 9, two sides and the upper end of the turbine shaft coaxial rotary disc 10 are respectively provided with the displacement sensor, and the detection end of the displacement sensor is in contact with the edge of the turbine shaft coaxial rotary disc 10.
Further, the displacement sensor is mounted on the displacement sensor fixing frame 11, two sides and upper end of the displacement sensor fixing frame 11 are respectively provided with one displacement sensor, and the end face of the turbine shaft coaxial rotary disc 10 is close to the end face of the displacement sensor fixing frame 11.
Further, the displacement sensor comprises a displacement monitoring contact rod 12, a displacement monitoring sliding plate 16, a displacement monitoring sliding sensor 21, a displacement sensor horizontal fixing seat 22 and a displacement sensor vertical fixing seat 23, one end of the displacement monitoring contact rod 12 is in contact with the edge of the turbine shaft coaxial rotary disc 10, the other end of the displacement monitoring contact rod 12 is fixedly connected with the displacement monitoring sliding plate 16, the displacement monitoring sliding plate 16 is in sliding connection with the displacement sensor horizontal fixing seat 22 through the displacement monitoring sliding sensor 21, and the displacement sensor horizontal fixing seat 22 is in fixed connection with the displacement sensor fixing frame 11 through the displacement sensor vertical fixing seat 23.
As an improvement, the displacement monitoring contact rod 12 is fixedly connected with the displacement monitoring sliding plate 16 through a contact rod connecting moving plate 13, a moving plate fixing pressing plate 14 and a moving plate fixing connecting plate 15, the displacement monitoring contact rod 12 is fixedly connected with the contact rod connecting moving plate 13, the contact rod connecting moving plate 13 is detachably and fixedly connected with the moving plate fixing connecting plate 15 through the moving plate fixing pressing plate 14, and the moving plate fixing connecting plate 15 is fixedly connected with the displacement monitoring sliding plate 16.
As an improvement, the displacement monitoring sliding plate 16 and two sides of the displacement sensor horizontal fixing seat 22 are provided with a sliding plate limiting piece 17, a movement limiting waist-shaped hole 18 and a sliding plate limiting bolt 19, one side of the sliding plate limiting piece 17 is fixedly connected with the side edge of the displacement sensor horizontal fixing seat 22, the movement limiting waist-shaped hole 18 is arranged on the other side of the sliding plate limiting piece 17, the sliding plate limiting bolt 19 passes through the movement limiting waist-shaped hole 18 and the side edge of the displacement monitoring sliding plate 16 is fixedly connected, and the sliding plate limiting bolt 19 can move in the movement limiting waist-shaped hole 18.
As an improvement, a vibration amplitude judging screw rod 20 is arranged between the displacement monitoring sliding plate 16 and the displacement sensor horizontal fixing seat 22, the vibration amplitude judging screw rod 20 is in threaded connection with the displacement monitoring sliding plate 16, and the end part of the vibration amplitude judging screw rod 20 is in contact with the outer side edge of the displacement sensor horizontal fixing seat 22.
The invention relates to a monitoring method of a turbine vibration monitoring system, which comprises the following steps:
s1: the vibration monitoring sensor 1 is connected with a rotating shaft of the steam turbine;
s2: when the vibration monitoring sensor 1 monitors the vibration of the rotating shaft of the steam turbine, the signal output by the vibration monitoring sensor 1 is converted into a digital signal through the signal analog-to-digital converter 2 and is transmitted to the core data processor 3;
s3: judging the vibration intensity through the core data processor 3, and alarming through the abnormal vibration alarming module 7 when the vibration reaches a set standard, and informing the staff of knowing to perform maintenance; meanwhile, signals are sent to the vibration monitoring mobile terminal 5, the vibration monitoring computer 6 and the alarm data recording module 8, the vibration monitoring mobile terminal 5 is convenient for workers or managers who are not on site to know, the vibration monitoring computer 6 is used for managing and storing, and the alarm data recording module 8 is used for recording data storage.
The working principle of the invention is as follows:
when the invention is used, the steam turbine shaft connecting flange 9 is connected with the rotating shaft of the steam turbine, the steam turbine shaft connecting flange 9 drives the steam turbine shaft coaxial rotary table 10 to rotate, if the steam turbine vibrates, the rotation of the steam turbine shaft coaxial rotary table 10 can deviate along with the deviation of the steam turbine shaft coaxial rotary table 10 and can be contacted with the displacement monitoring contact rod 12, the overlarge amplitude can lead to the movement of the displacement monitoring contact rod 12, the position of the contact rod connected with the movable plate 13 is adjusted after the movable plate fixed pressing plate 14 is loosened, so as to set the monitored vibration amplitude, the movable plate fixed pressing plate 14 is fixed after the position is adjusted, meanwhile, the vibration amplitude judging screw rod 20 is in contact with the displacement sensor horizontal fixing seat 22, when the vibration leads to the movement of the displacement monitoring contact rod 12, the contact distance between the vibration amplitude judging screw rod 20 and the displacement sensor horizontal fixing seat 22 can be increased, the visual detection of the vibration intensity of maintenance personnel is facilitated, the larger the distance between the vibration amplitude judging screw rod 20 and the displacement sensor horizontal fixing seat 22 is, the larger the vibration amplitude is, the monitored displacement data signal is acquired through the displacement monitoring sliding sensor 21 and transmitted to the signal analog-digital converter 2, and the displacement monitoring sliding plate 16 and the displacement limiting plate 22 are arranged between the displacement monitoring sliding plate and the displacement sensor horizontal sliding plate 22 and the movable plate 17 and the position limiting plate 18 and the limiting bolt limiting position is prevented from falling off the limiting position of the displacement limiting plate 12.
The technical scheme of the invention is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the invention fall within the protection scope of the invention.
Claims (7)
1. A turbine vibration monitoring system, characterized by: the system comprises a vibration monitoring sensor (1), a signal analog-to-digital converter (2), a core data processor (3), a network signal transmission module (4), a vibration monitoring mobile terminal (5) and an abnormal vibration alarm module (7), wherein a monitoring end of the vibration monitoring sensor (1) is connected with a transmission shaft of a steam turbine, a signal output end of the vibration monitoring sensor (1) is connected with a signal input end of the signal analog-to-digital converter (2), a signal output end of the signal analog-to-digital converter (2) is connected with a signal input end of the core data processor (3), an alarm signal output end of the core data processor (3) is connected with the abnormal vibration alarm module (7), a network transmission end of the core data processor (3) is connected with the network signal transmission module (4), and the network signal transmission module (4) is in wireless connection with the vibration monitoring mobile terminal (5);
the vibration monitoring sensor (1) comprises a turbine shaft connecting flange (9), a turbine shaft coaxial rotary table (10) and a displacement sensor, one end of the turbine shaft connecting flange (9) is detachably and fixedly connected with a transmission shaft of the turbine, the turbine shaft coaxial rotary table (10) is coaxially connected with the turbine shaft connecting flange (9), two sides and the upper end of the turbine shaft coaxial rotary table (10) are respectively provided with the displacement sensor, and the detection end of the displacement sensor is in contact with the edge of the turbine shaft coaxial rotary table (10);
the displacement sensor is arranged on a displacement sensor fixing frame (11), two sides and the upper end of the displacement sensor fixing frame (11) are respectively provided with one displacement sensor, and the end face of the turbine shaft coaxial rotary disc (10) is close to the end face of the displacement sensor fixing frame (11);
the displacement sensor comprises a displacement monitoring contact rod (12), a displacement monitoring sliding plate (16), a displacement monitoring sliding sensor (21), a displacement sensor horizontal fixing seat (22) and a displacement sensor vertical fixing seat (23), one end of the displacement monitoring contact rod (12) is in contact with the edge of a turbine shaft coaxial rotary disc (10), the other end of the displacement monitoring contact rod (12) is fixedly connected with the displacement monitoring sliding plate (16), the displacement monitoring sliding plate (16) is in sliding connection with the displacement sensor horizontal fixing seat (22) through the displacement monitoring sliding sensor (21), and the displacement sensor horizontal fixing seat (22) is in fixed connection with the displacement sensor fixing seat (11) through the displacement sensor vertical fixing seat (23).
2. The turbine vibration monitoring system of claim 1, wherein: the system also comprises a vibration monitoring computer (6), wherein the vibration monitoring computer (6) is connected with the network signal transmission module (4) through a network data line.
3. The turbine vibration monitoring system of claim 1, wherein: the system also comprises an alarm data recording module (8), wherein the alarm data recording module (8) is connected with the data transmission end of the core data processor (3).
4. The turbine vibration monitoring system of claim 1, wherein: the displacement monitoring contact rod (12) with through contact rod connection movable plate (13), movable plate fixed clamp plate (14) and movable plate fixed connection board (15) fixed connection between displacement monitoring sliding plate (16), displacement monitoring contact rod (12) with movable plate (13) fixed connection is connected to the contact rod, movable plate (13) with can dismantle fixed connection through movable plate fixed clamp plate (14) between movable plate fixed connection board (15), movable plate fixed connection board (15) with fixed connection between displacement monitoring sliding plate (16).
5. The turbine vibration monitoring system of claim 1, wherein: the displacement monitoring sliding plate (16) with both sides of displacement sensor horizontal fixing base (22) are provided with sliding plate spacing piece (17), remove spacing waist type hole (18) and sliding plate spacing bolt (19), one side of sliding plate spacing piece (17) with the side fixed connection of displacement sensor horizontal fixing base (22), remove spacing waist type hole (18) set up in the opposite side of sliding plate spacing piece (17), sliding plate spacing bolt (19) pass remove spacing waist type hole (18) with the side fixed connection of displacement monitoring sliding plate (16), sliding plate spacing bolt (19) can remove spacing waist type hole (18) internal motion.
6. The turbine vibration monitoring system of claim 1, wherein: the vibration amplitude judging screw rod (20) is arranged between the displacement monitoring sliding plate (16) and the displacement sensor horizontal fixing seat (22), the vibration amplitude judging screw rod (20) is in threaded connection with the displacement monitoring sliding plate (16), and the end part of the vibration amplitude judging screw rod (20) is in contact with the outer side edge of the displacement sensor horizontal fixing seat (22).
7. A method of monitoring a turbine vibration monitoring system according to claim 1, comprising the steps of:
s1: the vibration monitoring sensor (1) is connected with a rotating shaft of the steam turbine;
s2: when the vibration monitoring sensor (1) monitors the vibration of the rotating shaft of the steam turbine, a signal output by the vibration monitoring sensor (1) is converted into a digital signal through the signal analog-to-digital converter (2) and is transmitted to the core data processor (3);
s3: judging the vibration intensity through a core data processor (3), and informing a worker of knowing to perform maintenance through an abnormal vibration alarm module (7) when vibration reaches a set standard; meanwhile, signals are sent to the vibration monitoring mobile terminal (5), the vibration monitoring computer (6) and the alarm data recording module (8), the vibration monitoring mobile terminal (5) is convenient for workers or managers who are not on site to know, the vibration monitoring computer (6) is used for managing and storing, and the alarm data recording module (8) is used for recording data storage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110946856.8A CN113640005B (en) | 2021-08-18 | 2021-08-18 | Steam turbine vibration monitoring system and monitoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110946856.8A CN113640005B (en) | 2021-08-18 | 2021-08-18 | Steam turbine vibration monitoring system and monitoring method thereof |
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| CN113640005A CN113640005A (en) | 2021-11-12 |
| CN113640005B true CN113640005B (en) | 2024-04-02 |
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| CN113640005A (en) | 2021-11-12 |
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