CN112523926A - Hydraulic generator runner pressure monitoring system and method - Google Patents
Hydraulic generator runner pressure monitoring system and method Download PDFInfo
- Publication number
- CN112523926A CN112523926A CN202011496840.3A CN202011496840A CN112523926A CN 112523926 A CN112523926 A CN 112523926A CN 202011496840 A CN202011496840 A CN 202011496840A CN 112523926 A CN112523926 A CN 112523926A
- Authority
- CN
- China
- Prior art keywords
- pressure
- runner
- data
- ultrasonic
- side wall
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- F03B15/00—Controlling
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- 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
Abstract
A hydraulic generator runner pressure monitoring system and method, including pressure data acquisition system, runner intracavity data transmission system, runner intracavity and outside wireless transmission system and data collection and analysis system, adopt the runner internal pressure to measure directly, the method of the data transmission of the optic fibre, have improved the accuracy of the pressure measurement and efficiency of data transmission; the wireless transmission of the pressure data inside and outside the flow channel is carried out through ultrasonic waves, so that the damage to the structure of the flow channel is avoided, meanwhile, the real-time transmission of the data is realized, the service life of a measuring element is prolonged, and the data transmission efficiency is improved; the pressure information of each pressure monitoring part is wirelessly transmitted to a pressure information database through a WI-FI network, so that the pressure information of different parts of the flow channel can be tracked, processed and analyzed in real time, and powerful data support is provided for efficient and safe operation of the water turbine.
Description
Technical Field
The invention relates to the field of hydraulic generator control, in particular to a hydraulic generator runner pressure monitoring system and method.
Background
The complicated runner structure and the operating characteristics of the water turbine lead to the formation of complicated spatial motion of water flow in the runner of the water turbine, the hydrodynamic characteristics of the water turbine are complicated and changeable, and especially the change of the runner along-the-way water flow pressure and the difference of the same-section pressure distribution are main factors influencing the operating efficiency and the operating safety of the water turbine. When the output of the water turbine changes in a transitional process, the pressure steel pipe and the whole flow passage of the water turbine can generate large pressure fluctuation, and particularly, the flow passage of the water turbine with large space volume can cause vibration, noise and cavitation of a unit due to uneven pressure distribution of the same flow passage section. Therefore, in order to improve the operation efficiency and the operation safety of the water turbine, the pressure of a runner of the water turbine needs to be monitored in real time, and the pressure abnormity needs to be early warned in real time so as to guide the optimal operation of the water turbine. However, because the flow channel of the water turbine belongs to a large-scale closed cavity and is a reinforced concrete embedded part, the traditional pressure monitoring device is difficult to install and monitor, and the way of drilling deep holes at the monitoring part of the flow channel and arranging sensors is adopted, so that the closed structure of the flow channel is damaged, and the deep holes for installing the sensors are easy to lose sealing and rust when the device is operated for a long time. In addition, the pressure of the deep hole is measured and the sensors are distributed, so that the monitored pressure value is greatly attenuated, and the precision is poor. The invention provides a hydraulic turbine runner pressure monitoring system and a hydraulic turbine runner pressure monitoring method, which adopt a data transmission mode combining in-runner pressure taking, optical fiber, ultrasonic and local area network wireless transmission, monitor and transmit pressure data in a runner in real time, and store and analyze the pressure data. The invention avoids the damage of deep hole water taking and pressure measuring of the water turbine runner to the closed structure of the runner, simultaneously reduces the measurement precision error caused by the deep hole water taking and pressure measuring, and improves the pressure monitoring precision.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic generator runner pressure monitoring system and method, which enable image forming to be faster and more accurate, effectively monitor the pressure of a key part in a hydraulic turbine runner in real time, store, analyze and process pressure information and early warn of abnormal pressure states.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a hydraulic generator runner pressure monitoring system comprises a pressure data acquisition system, a runner intracavity data transmission system, a runner intracavity external wireless transmission system and a data collection and analysis system, wherein the pressure data acquisition system and the runner intracavity data transmission system are positioned in a runner and are mutually connected, a pressure sensor fixedly connected with the inner side wall of the runner to be detected is arranged in the pressure data acquisition system, an ultrasonic transducer fixedly connected with the inner side wall of the runner to be detected is arranged in the runner intracavity external data transmission system, an ultrasonic pickup is arranged on the outer wall of the runner at the same position with the ultrasonic transducer, pressure data opposite to the inner side of the runner is detected by the pressure sensor, is converted into a corresponding signal and then is transmitted to the ultrasonic transducer, the ultrasonic pickup receives an ultrasonic signal sent by the ultrasonic transducer and converts the ultrasonic signal into a corresponding numerical value to be output, and the pressure value is transmitted to a data collecting and analyzing system through a wireless transmission system outside the runner cavity and finally converted into a pressure value detected in the runner.
The pressure data acquisition system comprises a pressure sensor fixedly connected with the inner side wall of the flow channel to be detected, the pressure sensor is a waterproof patch pressure sensor, the pressure sensor is fixed on the inner side wall of the flow channel of the key pressure detection part in a sticking or anchoring mode, and the water pressure at the position is captured in real time.
The flow channel intracavity data transmission system is an optical fiber pressure data transmission system and comprises an amplifying circuit connected with the output end of a pressure sensor and an electric/optical signal converter connected with the output end of the amplifying circuit, wherein the electric/optical signal converter is transmitted to a signal output end arranged at a steel pipe or a steel side wall through an optical fiber, is converted into an electric signal through the optical/electrical signal converter and then is input into an ultrasonic transducer, and the pressure signal outlet end at the tail end of a pressure pipeline is directly arranged at an exposed pipe of the pressure steel pipe; the pressure signal outlet end of the rotating wheel chamber is arranged at the steel top cover; the pressure signal outlet end of the straight conical section of the draft tube is arranged at the steel entrance door of the draft tube.
The runner intracavity external data transmission system comprises an ultrasonic transducer fixedly connected with the inner side wall of a runner to be detected, and an ultrasonic pickup fixedly connected with the outer side wall of the runner at the same position as the ultrasonic transducer, wherein the ultrasonic transducer receives pressure data transmitted by pressure sensors at different positions and converts the pressure data into ultrasonic signals, the steel side wall is used as a carrier and penetrates through the side wall of the runner, the ultrasonic pickup is arranged outside the steel side wall and transmits the ultrasonic data, the ultrasonic pickup receives ultrasonic waves for loading pressure information, and after filtering, wave detection and amplification, the pressure information is restored and transmitted to the runner intracavity external wireless transmission system.
The runner extra-cavity wireless transmission system comprises a wireless signal transmitter, a WI-FI wireless limiting network and a wireless signal receiver, wherein the wireless signal transmitter, the WI-FI wireless limiting network and the wireless signal receiver are arranged on the ultrasonic sound pick-up, and the wireless signal transmitter transmits pressure data monitoring information processed by the ultrasonic sound pick-up to the wireless signal receiver connected with a runner pressure information database of the hydropower station through the WI-FI wireless network.
The data collecting and analyzing system comprises a pressure information database and pressure analyzing software, wherein the pressure information database collects and stores pressure information transmitted by each node to be monitored in real time, and the pressure analyzing software calls the pressure information in the pressure information database, analyzes, displays and processes the pressure information, and warns the abnormal pressure value of the flow channel.
The pressure sensor, the amplifying circuit, the optical/electrical signal converter, the electrical/optical signal converter, the optical fiber and the ultrasonic transducer are protected from water by a waterproof sealing sleeve and are fixed with the wall of the runner.
The pressure sensors are respectively arranged in a pressure pipeline of the water turbine, a rotating wheel area and a draft tube inlet area;
arranging a pressure sensor at a water inlet valve of a pressure pipeline of the water turbine or the exposed pipe end of the water inlet valve connected with the volute;
four groups of pressure sensors are symmetrically distributed along the periphery of a top cover of the water turbine in a runner area;
four groups of pressure sensors are symmetrically distributed on the taper pipe section in the inlet area of the draft pipe.
The pressure data acquisition system, the runner cavity internal data transmission system and the runner cavity internal and external data transmission system are powered by waterproof cables, the waterproof cables enter a pressure pipeline section through a hole drilled at an exposed pipe end, a runner area enters through hollow bolts on a water turbine top cover, a draft tube enters an inlet area and enters through hollow bolts on a draft tube entering door, and the cables are arranged along the water flow direction after entering the runner and are connected to a data acquisition system processor.
The monitoring method using the hydraulic generator runner pressure monitoring system comprises the following steps:
step one, a pressure sensor at each monitoring node receives water flow impact in a flow channel and converts a pressure value into an electric signal to be output;
step two, the amplifying circuit receives the electric signal output by the pressure sensor, amplifies the data and transmits the amplified data to the electric/optical signal converter, and the electric/optical signal converter converts the amplified signal into an optical carrier pressure signal and outputs the optical carrier pressure signal;
thirdly, transmitting the light-carrying pressure signal output by the photoelectric signal converter to a light/electric signal converter at a signal output end through optical fiber communication, converting the light-carrying pressure signal into an electric signal and outputting the electric signal to an ultrasonic transducer;
step four, the ultrasonic transducer receives the electric signals output by the optical/electric signal converter received by each monitoring node, converts the electric signals into ultrasonic signals, uses the steel side wall as a carrier, penetrates through the side wall of the flow channel, and transmits the ultrasonic signals to an ultrasonic pickup outside the steel side wall, and the ultrasonic pickup filters, detects and amplifies the received ultrasonic waves, removes noise interference and obvious abnormal low-frequency sound waves in the flow channel, restores the received ultrasonic waves into pressure information data and sends the pressure information data to the wireless signal transmitter;
and fifthly, the wireless signal receiver receives the pressure value sent by the wireless signal transmitter and transmits the pressure value to the pressure information database, the pressure analysis software calls pressure data in the pressure information database, the data are analyzed, displayed and processed, whether the pressure of the runner is normal or not is judged according to the current working condition and historical data of the hydraulic generator, and the pressure data exceeding a preset threshold value is alarmed.
According to the hydraulic generator runner pressure monitoring system and method provided by the invention, the internal pressure of the runner is directly measured, and the optical fiber data transmission method is adopted, so that the accuracy of pressure measurement and the efficiency of data transmission are improved; the wireless transmission of the pressure data inside and outside the flow channel is carried out through ultrasonic waves, so that the damage to the structure of the flow channel is avoided, meanwhile, the real-time transmission of the data is realized, the service life of a measuring element is prolonged, and the data transmission efficiency is improved; the pressure information of each pressure monitoring part is wirelessly transmitted to a pressure information database through a WI-FI network, so that the pressure information of different parts of the flow channel can be tracked, processed and analyzed in real time, and powerful data support is provided for efficient and safe operation of the water turbine.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the present invention;
fig. 2 is a flow passage layout diagram of the pressure monitoring system.
Detailed Description
As shown in fig. 1-2, a hydraulic generator runner pressure monitoring system comprises a pressure data acquisition system, a runner cavity internal and external data transmission system, a runner cavity external wireless transmission system and a data acquisition and analysis system, wherein the pressure data acquisition system and the runner cavity internal data transmission system are positioned in a runner and connected with each other, a pressure sensor fixedly connected with the inner side wall of the runner to be detected is arranged in the pressure data acquisition system, an ultrasonic transducer fixedly connected with the inner side wall of the runner to be detected is arranged in the runner cavity internal and external data transmission system, an ultrasonic pickup is arranged on the outer wall of the runner at the same position with the ultrasonic transducer, pressure data of the inner side pair of the runner is detected by the pressure sensor and converted into corresponding signals, and then transmitted to the ultrasonic transducer, the ultrasonic pickup receives ultrasonic signals sent by the ultrasonic transducer and converts the signals into corresponding numerical values to be output, and the pressure value is transmitted to a data collecting and analyzing system through a wireless transmission system outside the runner cavity and finally converted into a pressure value detected in the runner.
The pressure data acquisition system comprises a pressure sensor fixedly connected with the inner side wall of the flow channel to be detected, the pressure sensor is a waterproof patch pressure sensor, the pressure sensor is fixed on the inner side wall of the flow channel of the key pressure detection part in a sticking or anchoring mode, and the water pressure at the position is captured in real time.
The flow channel intracavity data transmission system is an optical fiber pressure data transmission system and comprises an amplifying circuit connected with the output end of a pressure sensor and an electric/optical signal converter connected with the output end of the amplifying circuit, wherein the electric/optical signal converter is transmitted to a signal output end arranged at a steel pipe or a steel side wall through an optical fiber, is converted into an electric signal through the optical/electrical signal converter and then is input into an ultrasonic transducer, and the pressure signal outlet end at the tail end of a pressure pipeline is directly arranged at an exposed pipe of the pressure steel pipe; the pressure signal outlet end of the rotating wheel chamber is arranged at the steel top cover; the pressure signal outlet end of the straight conical section of the draft tube is arranged at the steel entrance door of the draft tube.
The runner intracavity external data transmission system comprises an ultrasonic transducer fixedly connected with the inner side wall of a runner to be detected, and an ultrasonic pickup fixedly connected with the outer side wall of the runner at the same position as the ultrasonic transducer, wherein the ultrasonic transducer receives pressure data transmitted by pressure sensors at different positions and converts the pressure data into ultrasonic signals, the steel side wall is used as a carrier and penetrates through the side wall of the runner, the ultrasonic pickup is arranged outside the steel side wall and transmits the ultrasonic data, the ultrasonic pickup receives ultrasonic waves for loading pressure information, and after filtering, wave detection and amplification, the pressure information is restored and transmitted to the runner intracavity external wireless transmission system.
The runner extra-cavity wireless transmission system comprises a wireless signal transmitter, a WI-FI wireless limiting network and a wireless signal receiver, wherein the wireless signal transmitter, the WI-FI wireless limiting network and the wireless signal receiver are arranged on the ultrasonic sound pick-up, and the wireless signal transmitter transmits pressure data monitoring information processed by the ultrasonic sound pick-up to the wireless signal receiver connected with a runner pressure information database of the hydropower station through the WI-FI wireless network.
The data collecting and analyzing system comprises a pressure information database and pressure analyzing software, wherein the pressure information database collects and stores pressure information transmitted by each node to be monitored in real time, the pressure analyzing software compares, analyzes and counts the pressure information of each part and position stored in the pressure information database, analyzes the running state of water flow in a flow channel in real time according to the requirement of safe running of the water turbine on the pressure distribution characteristic of the flow channel, identifies dangerous pressure signals influencing the running efficiency and safety of the water turbine, and sends out running abnormity early warning to operators.
The pressure sensor, the amplifying circuit, the optical/electrical signal converter, the electrical/optical signal converter, the optical fiber and the ultrasonic transducer are protected from water by a waterproof sealing sleeve and are fixed with the wall of the runner.
The pressure sensors are respectively arranged in a pressure pipeline of the water turbine, a rotating wheel area and a draft tube inlet area;
arranging a pressure sensor at a water inlet valve of a pressure pipeline of the water turbine or the exposed pipe end of the water inlet valve connected with the volute;
four groups of pressure sensors are symmetrically distributed along the periphery of a top cover of the water turbine in a runner area;
four groups of pressure sensors are symmetrically distributed on the taper pipe section in the inlet area of the draft pipe.
As shown in figure 2, the pressure data acquisition system fixes HP206F waterproof patch type pressure sensors at key pressure monitoring positions in a hydraulic turbine runner in a pasting or anchoring mode, wherein two groups of pressure sensors are symmetrically arranged on the tail end section of a pressure pipeline along the circumference of the section, four groups of pressure sensors are symmetrically arranged in a runner chamber along a top cover, four groups of pressure sensors are symmetrically arranged in a tail water pipe cone section, two-stage numbering is carried out on the sensors at different positions, the first-stage numbering is the numbering of the runner region where the sensors are located, the tail end of the pressure pipeline is 1, the runner chamber is 2, the tail water pipe end is 3, the second-stage numbering is the numbering of the sensors at different positions in the same region, the output end of the sensor is connected with an oscillation circuit to carry out signal amplification, and the amplified signals are output to the electric/optical signal sensors
The pressure data acquisition system, the runner cavity internal data transmission system and the runner cavity internal and external data transmission system are powered by waterproof cables, the waterproof cables enter a pressure pipeline section through a hole drilled at an exposed pipe end, a runner area enters through hollow bolts on a water turbine top cover, a draft tube enters an inlet area and enters through hollow bolts on a draft tube entering door, and the cables are arranged along the water flow direction after entering the runner and are connected to a data acquisition system processor.
The monitoring method using the hydraulic generator runner pressure monitoring system comprises the following steps:
step one, a pressure sensor at each monitoring node receives water flow impact in a flow channel and converts a pressure value into an electric signal to be output;
step two, the amplifying circuit receives the electric signal output by the pressure sensor, amplifies the data and transmits the amplified data to the electric/optical signal converter, and the electric/optical signal converter converts the amplified signal into an optical carrier pressure signal and outputs the optical carrier pressure signal;
thirdly, transmitting the light-carrying pressure signal output by the photoelectric signal converter to a light/electric signal converter at a signal output end through optical fiber communication, converting the light-carrying pressure signal into an electric signal and outputting the electric signal to an ultrasonic transducer;
step four, the ultrasonic transducer receives the electric signals output by the optical/electric signal converter received by each monitoring node, converts the electric signals into ultrasonic signals, uses the steel side wall as a carrier, penetrates through the side wall of the flow channel, and transmits the ultrasonic signals to an ultrasonic pickup outside the steel side wall, and the ultrasonic pickup filters, detects and amplifies the received ultrasonic waves, removes noise interference and obvious abnormal low-frequency sound waves in the flow channel, restores the received ultrasonic waves into pressure information data and sends the pressure information data to the wireless signal transmitter;
and fifthly, the wireless signal receiver receives the pressure value sent by the wireless signal transmitter and transmits the pressure value to the pressure information database, the pressure analysis software calls pressure data in the pressure information database, the data are analyzed, displayed and processed, whether the pressure of the runner is normal or not is judged according to the current working condition and historical data of the hydraulic generator, and the pressure data exceeding a preset threshold value is alarmed.
Claims (9)
1. A hydraulic generator runner pressure monitoring system is characterized by comprising a pressure data acquisition system, a runner cavity internal data transmission system, a runner cavity internal and external data transmission system, a runner cavity external wireless transmission system and a data acquisition and analysis system, wherein the pressure data acquisition system and the runner cavity internal data transmission system are positioned in a runner and are mutually connected, a pressure sensor fixedly connected with the inner side wall of the runner to be detected is arranged in the pressure data acquisition system, an ultrasonic transducer fixedly connected with the inner side wall of the runner to be detected is arranged in the runner cavity internal and external data transmission system, an ultrasonic pickup is arranged on the outer wall of the runner at the same position with the ultrasonic transducer, pressure data of the inner side pair of the runner is detected through the pressure sensor, is converted into corresponding signals and then is transmitted to the ultrasonic transducer, the ultrasonic pickup receives ultrasonic signals sent by ultrasound and is converted into corresponding numerical values to be output, and the pressure value is transmitted to a data collecting and analyzing system through a wireless transmission system outside the runner cavity and finally converted into a pressure value detected in the runner.
2. The system for monitoring the pressure of the runner of the hydraulic generator according to claim 1, wherein the pressure data acquisition system comprises a pressure sensor fixedly connected with the inner side wall of the runner to be detected, and the pressure sensor is a waterproof patch pressure sensor.
3. The hydraulic generator runner pressure monitoring system according to claim 1, wherein the runner cavity data transmission system is an optical fiber pressure data transmission system, and comprises an amplifying circuit connected with the output end of the pressure sensor, and an electric/optical signal converter connected with the output end of the amplifying circuit, wherein the electric/optical signal converter is transmitted to the signal output end arranged at the steel pipe or the steel side wall through an optical fiber, and is converted into an electric signal by the optical/electrical signal converter and then is input into the ultrasonic transducer.
4. The hydraulic generator runner pressure monitoring system according to claim 3, wherein the runner cavity inner and outer data transmission system comprises an ultrasonic transducer fixedly connected with the inner side wall of the runner to be detected and an ultrasonic pickup fixedly connected with the outer wall of the runner at the same position as the ultrasonic transducer, the ultrasonic transducer receives pressure data transmitted by the pressure sensors at different positions and converts the pressure data into ultrasonic signals, the steel side wall is used as a carrier, the steel side wall penetrates through the runner side wall and transmits the ultrasonic signals to the ultrasonic pickup arranged on the outer side of the side wall, and the ultrasonic pickup receives ultrasonic waves loaded with pressure information, filters, detects and amplifies the ultrasonic waves, restores the pressure information and transmits the pressure information to the runner cavity outer wireless transmission system.
5. The hydraulic generator runner pressure monitoring system of claim 4, wherein the runner extraluminal wireless transmission system comprises a wireless signal transmitter, a WI-FI wireless local area network and a wireless signal receiver arranged on the ultrasonic pickup.
6. The hydraulic generator runner pressure monitoring system as claimed in claim 5, wherein the hydraulic generator runner pressure monitoring system is characterized in that
The data collecting and analyzing system comprises a pressure information database and pressure analyzing software, wherein the pressure information database collects and stores pressure information transmitted by each node to be monitored in real time, and the pressure analyzing software calls the pressure information in the pressure information database, analyzes, displays and processes the pressure information, and carries out early warning on abnormal pressure values of the flow channels.
7. The hydraulic generator runner pressure monitoring system as claimed in claim 6, wherein the hydraulic generator runner pressure monitoring system is characterized in that
The pressure sensor, the amplifying circuit, the optical/electrical signal converter, the electrical/optical signal converter, the optical fiber and the ultrasonic transducer are protected by a waterproof sealing sleeve for water proofing and are fixed with the wall of the runner.
8. The hydraulic generator runner pressure monitoring system of claim 6, wherein: the pressure sensors are respectively arranged in a pressure pipeline of the water turbine, a rotating wheel area and a draft tube inlet area;
arranging a pressure sensor at a water inlet valve of a pressure pipeline of the water turbine or the exposed pipe end of the water inlet valve connected with the volute;
four groups of pressure sensors are symmetrically distributed along the periphery of a top cover of the water turbine in a runner area;
four groups of pressure sensors are symmetrically distributed on the taper pipe section in the inlet area of the draft pipe.
9. A monitoring method using the hydraulic generator runner pressure monitoring system according to any one of claims 1 to 8, characterized by comprising the steps of:
step one, a pressure sensor at each monitoring node receives water flow impact in a flow channel and converts a pressure value into an electric signal to be output;
step two, the amplifying circuit receives the electric signal output by the pressure sensor, amplifies the data and transmits the amplified data to the electric/optical signal converter, and the electric/optical signal converter converts the amplified signal into an optical carrier pressure signal and outputs the optical carrier pressure signal;
thirdly, transmitting the light-carrying pressure signal output by the photoelectric signal converter to a light/electric signal converter at a signal output end through optical fiber communication, converting the light-carrying pressure signal into an electric signal and outputting the electric signal to an ultrasonic transducer;
step four, the ultrasonic transducer receives the electric signals output by the optical/electric signal converter received by each monitoring node, converts the electric signals into ultrasonic signals, uses the steel side wall as a carrier, penetrates through the side wall of the flow channel, and transmits the ultrasonic signals to an ultrasonic pickup outside the steel side wall, and the ultrasonic pickup filters, detects and amplifies the received ultrasonic waves, removes noise interference and obvious abnormal low-frequency sound waves in the flow channel, restores the received ultrasonic waves into pressure information data and sends the pressure information data to the wireless signal transmitter;
and fifthly, the wireless signal receiver receives the pressure value sent by the wireless signal transmitter and transmits the pressure value to the pressure information database, the pressure analysis software calls pressure data in the pressure information database, the data are analyzed, displayed and processed, whether the pressure of the runner is normal or not is judged according to the current working condition and historical data of the hydraulic generator, and the pressure data exceeding a preset threshold value is alarmed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011496840.3A CN112523926B (en) | 2020-12-17 | 2020-12-17 | Hydraulic generator runner pressure monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011496840.3A CN112523926B (en) | 2020-12-17 | 2020-12-17 | Hydraulic generator runner pressure monitoring system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112523926A true CN112523926A (en) | 2021-03-19 |
| CN112523926B CN112523926B (en) | 2022-10-18 |
Family
ID=75001113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011496840.3A Active CN112523926B (en) | 2020-12-17 | 2020-12-17 | Hydraulic generator runner pressure monitoring system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112523926B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009616A (en) * | 1975-01-29 | 1977-03-01 | Westinghouse Electric Corporation | Acoustic method for measuring gas pressure |
| US5040415A (en) * | 1990-06-15 | 1991-08-20 | Rockwell International Corporation | Nonintrusive flow sensing system |
| CN103169505A (en) * | 2013-03-19 | 2013-06-26 | 何宗彦 | Method and device for Doppler ultrasound pickup analysis processing |
| CN103630288A (en) * | 2013-11-28 | 2014-03-12 | 江苏大学 | Ultrasonic recycling triggered pressure measuring device and method |
| CN104344218A (en) * | 2013-07-31 | 2015-02-11 | 无锡慧思顿科技有限公司 | Intelligent delivery pipeline with multiple integrated sensors and monitoring system |
| US20190003871A1 (en) * | 2017-06-29 | 2019-01-03 | Aubrey Dare Westmoreland, III | Pressure Sensor System |
-
2020
- 2020-12-17 CN CN202011496840.3A patent/CN112523926B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009616A (en) * | 1975-01-29 | 1977-03-01 | Westinghouse Electric Corporation | Acoustic method for measuring gas pressure |
| US5040415A (en) * | 1990-06-15 | 1991-08-20 | Rockwell International Corporation | Nonintrusive flow sensing system |
| CN103169505A (en) * | 2013-03-19 | 2013-06-26 | 何宗彦 | Method and device for Doppler ultrasound pickup analysis processing |
| CN104344218A (en) * | 2013-07-31 | 2015-02-11 | 无锡慧思顿科技有限公司 | Intelligent delivery pipeline with multiple integrated sensors and monitoring system |
| CN103630288A (en) * | 2013-11-28 | 2014-03-12 | 江苏大学 | Ultrasonic recycling triggered pressure measuring device and method |
| US20190003871A1 (en) * | 2017-06-29 | 2019-01-03 | Aubrey Dare Westmoreland, III | Pressure Sensor System |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112523926B (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205746047U (en) | A kind of long-distance oil & gas pipeline safety monitoring system | |
| CN104613885A (en) | Tunnel pipeline monitoring and early warning system | |
| CN205772976U (en) | A kind of tower crane lifting guide support adding fall joint pre-alarming device | |
| CN101603630A (en) | The monitoring pipeline vibration system and method | |
| CN207539636U (en) | A kind of distributed pipeline state intelligent monitoring system | |
| CN112523926B (en) | Hydraulic generator runner pressure monitoring system and method | |
| CN104763000A (en) | Detection method for completeness of foundation pile | |
| CN109612757B (en) | Method for diagnosing equipment based on sound characteristic and temperature characteristic | |
| CN102116174A (en) | System for monitoring pressure of paste-filling pipeline on line | |
| CN201460860U (en) | Drilling detection collision preventing alarm system | |
| CN105528854A (en) | External force damage prevention system for power cable | |
| CN204680159U (en) | Optical fiber distributed type reservoir dam monitoring system | |
| CN204256885U (en) | A kind of anti-outside destroy system of power cable | |
| CN108444592A (en) | Wireless vibration monitoring and fault diagnosis system | |
| CN109839235B (en) | Large-scale roller circumferential weld fatigue failure online monitoring and early warning device and method | |
| CN114563040A (en) | Hydropower station hydraulic tunnel monitoring system and working method thereof | |
| CN113153727A (en) | Fracturing pump monitoring system and method | |
| CN110553154B (en) | Urban underground pipe network leakage monitoring method and system | |
| CN216791523U (en) | Natural gas line third party construction early warning and leakage monitoring system | |
| CN206656844U (en) | A kind of pier subsidence status monitoring device using jump bit | |
| CN214308895U (en) | Tunnel body structure monitoring system based on resonant sensor | |
| CN218377855U (en) | Safety valve | |
| CN219713095U (en) | Oil gas pipeline leakage monitoring device | |
| CN220167926U (en) | Integrated acquisition device for monitoring liquid level of oil well | |
| CN104408848A (en) | Accurate positioning type fiber sensing early warning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |