CN213981033U - Displacement monitoring device for main distributing valve of speed regulator of water turbine - Google Patents
Displacement monitoring device for main distributing valve of speed regulator of water turbine Download PDFInfo
- Publication number
- CN213981033U CN213981033U CN202022917538.2U CN202022917538U CN213981033U CN 213981033 U CN213981033 U CN 213981033U CN 202022917538 U CN202022917538 U CN 202022917538U CN 213981033 U CN213981033 U CN 213981033U
- Authority
- CN
- China
- Prior art keywords
- module
- distributing valve
- displacement sensor
- speed regulator
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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 displacement monitoring device for a main distributing valve of a hydraulic turbine speed regulator comprises a PLC (programmable logic controller), an isolation transmitter and a switch, wherein the PLC is electrically connected with a magnetostrictive displacement sensor through the isolation transmitter, and the displacement sensor is used for checking a position signal of a limiting plate of the main distributing valve; the PLC is in communication connection with the switch, the switch is in communication connection with the industrial personal computer and the local control unit respectively, and the PLC is powered by the power supply conversion module; the magnetostrictive displacement sensor is arranged on the side face of the main pressure distribution valve base, and the main pressure distribution valve base is connected with the valve core of the main pressure distribution valve. The utility model has the advantages of reasonable design, easy to assemble, easy operation, it is multiple functional, improved the security of speed regulator control, reduced speed regulator owner distributing valve magnetostrictive displacement sensor trouble or main distributing valve and followed the risk that the trouble leads to unit equipment to damage and personnel's safety.
Description
Technical Field
The utility model belongs to the technical field of hydraulic turbine speed governor owner distributing valve displacement monitoring, in particular to hydraulic turbine speed governor owner distributing valve displacement monitoring devices.
Background
The main distributing valve is one of important devices for controlling the speed regulator of the water turbine, and the action reliability of the main distributing valve directly influences the regulation stability of the speed regulator and even the safe and stable operation of a unit. In the operation process of the unit, the hydraulic turbine speed regulator adjusts the opening degree of the guide vane according to an active power signal sent by the unit, the opening degree value of the guide vane generally collects the displacement of the servomotor and is required to be consistent with the actual action condition of the main pressure distribution valve, if the given value of the opening degree of the guide vane is not synchronous with the displacement value of the main pressure distribution valve of the speed regulator or the deviation value exceeds a threshold value, the main pressure distribution valve can be judged to follow the fault, namely the speed regulator is judged to have a serious fault, and then the control authority of the speed regulator is switched. If the main controller and the standby controller have serious faults of the speed regulator at the same time, and the main controller and the standby controller are not switched to a manual state within five seconds, an accident shutdown process of the monitoring system is triggered. Therefore, the displacement monitoring of the main distributing valve of the speed regulator is very necessary, and the monitoring is required to be reliable and accurate in action. At present, the existing system mainly has the following problems:
(1) the main distributing valve limiting plate is narrow in measuring range, and the actual displacement of the main distributing valve cannot be accurately reflected by the measurement of the non-contact sensor. At present, a non-contact sensor is adopted to measure the action displacement of a main distributing valve, the measurable range of a main distributing valve plate is smaller, the curved surface variation of the main distributing valve cannot meet the precision acquired by the non-contact sensor, the position variation of the main distributing valve cannot be accurately monitored, the actual displacement of the action of the main distributing valve cannot be truly reflected, a larger error value exists, serious faults of a speed regulator cannot be truly judged, and the following faults of the main distributing valve cannot be favorably processed by a unit monitoring system. And the valve core position of the main distributing valve can monitor the actual displacement of the main distributing valve.
(2) The non-contact sensor is susceptible to external factors and cannot reliably measure actual displacement. At present, the main distributing valve displacement monitoring adopts a non-contact sensor, the sensor has higher requirement on effective induction distance and is easily influenced by electromagnetic interference and vibration, so that the data jumping condition often occurs when the main distributing valve displacement is monitored, and the potential hidden danger of safe and stable operation of a unit exists.
In order to ensure that the displacement monitoring of the main distributing valve of the hydropower station speed regulator is accurate and reliable, improve the reliability of the follow-up fault judgment of the main distributing valve, reduce the loss caused by accidents to the maximum extent and protect the personal safety and the asset safety, the displacement monitoring device of the main distributing valve of the hydraulic turbine speed regulator needs to be designed urgently.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem that the background art exists, the utility model provides a hydraulic turbine speed regulator owner distributing valve displacement monitoring devices, structural design is reasonable, easy to assemble, easy operation, it is multiple functional, improved the security of speed regulator control, reduced speed regulator owner distributing valve magnetostrictive displacement sensor trouble or main distributing valve and followed the risk that the trouble leads to the unit equipment to damage and personnel's safety.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a displacement monitoring device for a main distributing valve of a hydraulic turbine speed regulator comprises a PLC (programmable logic controller), an isolation transmitter and a switch, wherein the PLC is electrically connected with a magnetostrictive displacement sensor through the isolation transmitter, and the displacement sensor is used for checking a position signal of a limiting plate of the main distributing valve; the PLC is in communication connection with the switch, the switch is in communication connection with the industrial personal computer and the local control unit respectively, and the PLC is powered by the power supply conversion module;
the magnetostrictive displacement sensor is provided with a magnetostrictive displacement sensor guide rail, the magnetostrictive displacement sensor guide rail is in sliding connection with a magnetostrictive displacement sensor connecting rod, the magnetostrictive displacement sensor connecting rod is connected with an adjusting rod, the adjusting rod is connected with a fixed block, and the fixed block is connected with a main pressure distribution valve limiting plate; the magnetostrictive displacement sensor is arranged on the side face of the main pressure distribution valve base, and the main pressure distribution valve base is connected with the valve core of the main pressure distribution valve.
In the preferred scheme, the PLC controller, the switch, the industrial personal computer and the power supply conversion module are arranged in the electric control box; the PLC controller comprises a CPU module, a DI module, a DO module, an AI module, an AO module, a PLC power supply module and a communication module;
the DI module is used for collecting a switching value signal and a power failure alarm signal of the position of the main distributing valve;
the DO module is used for outputting a speed regulator control command and controlling the speed regulator to start and stop;
the AI module is used for collecting the analog quantity of a magnetostrictive displacement sensor of a main pressure distributing valve of the speed regulator;
the AO module is used for outputting a displacement analog quantity signal of a main distributing valve of the speed regulator to the industrial personal computer and the digital display meter;
the CPU module, the industrial personal computer and the local control unit of the PLC controller respectively transmit data with the switch in an Ethernet communication mode;
the power supply module is used for supplying power to a DI module, a DO module, an AI module, an AO module power supply, an industrial personal computer, a switch, an isolation transmitter, a digital display meter and an indicator light of the PLC.
In the preferred scheme, the industrial personal computer is arranged on the front surface of the electric control box and is used for displaying an analog quantity signal, a switching value action record and a speed regulator running state signal of the magnetostrictive displacement sensor.
In the preferred scheme, the front of the electrical control box is provided with an indicator lamp, a button, a digital display meter, a wiring terminal row and a power switch button; the indicator light is used for monitoring faults of a magnetostrictive displacement sensor of a main pressure distributing valve of the speed regulator, the position state of the main pressure distributing valve and power failure signals.
In a preferable scheme, universal wheels are arranged at the bottom of the electric control box.
In a preferred scheme, the side part of the electric control box is provided with heat dissipation holes.
This patent can reach following beneficial effect:
the utility model has the advantages of reasonable design, easy to assemble, easy operation, it is multiple functional, improved the security of speed regulator control, reduced speed regulator owner distributing valve magnetostrictive displacement sensor trouble or main distributing valve and followed the risk that the trouble leads to unit equipment to damage and personnel's safety. Through the fixed block of main distributing valve limiting plate, the synchronism of the action of the main distributing valve and the action of the magnetostrictive displacement sensor connecting rod is improved, the control strategy of displacement monitoring of the main distributing valve is perfected, and the integrity of the control structure of the main distributing valve is improved. The magnetostrictive displacement sensor can effectively avoid the problems of electromagnetic interference and data jumping caused by the easy vibration of the bracket, and practically improves the reliability of measuring the displacement of the main distributing valve of the speed regulator. The state and signals of the main distributing valve of the speed regulator can be controlled and monitored through the electric control box, so that the site risk is reduced, and the expansion of accidents is effectively controlled. The displacement data and the fault event record of the main distributing valve can be checked through the industrial personal computer.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a three-dimensional structure diagram of the electrical control box of the present invention;
fig. 3 is the installation schematic diagram of the magnetostrictive displacement sensor connecting rod of the present invention.
In the figure: 1-a PLC controller, 2-a power supply conversion module, 3-an indicator light, 4-a button, 5-a digital display meter, 6-a switch, 7-a local control unit LCU, 8-an industrial personal computer, 9-an isolation transmitter, 10-a magnetostrictive displacement sensor, 101-a magnetostrictive displacement sensor guide rail, 102-a magnetostrictive displacement sensor connecting rod, 11-a main distributing valve limiting plate, 12-a universal wheel, 13-a power switch button, 14-a wiring terminal row, 15-a heat dissipation hole, 16-an electrical control box, 17-a handle, 18-a fixed block, 19-a regulating rod, 20-a main distributing valve core, 21-a main distributing valve base, an LCU-a local control unit and an HMI-an industrial personal computer.
Detailed Description
A preferred scheme is as shown in fig. 1 to 3, the displacement monitoring device for the main distributing valve of the hydro governor comprises a PLC (programmable logic controller) 1, an isolation transmitter 9 and a switch 6, wherein the PLC 1 is electrically connected with a magnetostrictive displacement sensor 10 through the isolation transmitter 9, and the displacement sensor 10 is used for checking a position signal of a limiting plate 11 of the main distributing valve; the PLC controller 1 is in communication connection with an exchanger 6, the exchanger 6 is in communication connection with an industrial personal computer 8 and a local control unit 7 respectively, and the PLC controller 1 is powered by a power supply conversion module 2;
a magnetostrictive displacement sensor guide rail 101 is arranged on the magnetostrictive displacement sensor 10, the magnetostrictive displacement sensor guide rail 101 is in sliding connection with a magnetostrictive displacement sensor connecting rod 102, the magnetostrictive displacement sensor connecting rod 102 is connected with an adjusting rod 19, the adjusting rod 19 is connected with a fixed block 18, and the fixed block 18 is connected with a main distributing valve limiting plate 11; the magnetostrictive displacement sensor 10 is used for being arranged on the side surface of a main distributing valve base 21, and the main distributing valve base 21 is connected with a main distributing valve core 20.
Further, the PLC controller 1, the switch 6, the industrial personal computer 8 and the power supply conversion module 2 are arranged in the electric control box 16; the PLC controller 1 comprises a CPU module, a DI module, a DO module, an AI module, an AO module, a PLC power supply module and a communication module;
the DI module is used for collecting a switching value signal and a power failure alarm signal of the position of the main distributing valve;
the DO module is used for outputting a speed regulator control command and controlling the speed regulator to start and stop;
the AI module is used for collecting the analog quantity of a magnetostrictive displacement sensor of a main pressure distributing valve of the speed regulator;
the AO module is used for outputting a displacement analog quantity signal of a main distributing valve of the speed regulator to the industrial personal computer 8 and the digital display meter 5;
the CPU module of the PLC, the industrial personal computer 8 and the local control unit 7 respectively transmit data with the switch 6 in an Ethernet communication mode;
the power supply module is used for supplying power to a DI module, a DO module, an AI module, an AO module power supply, an industrial personal computer 8, a switch 6, an isolation transmitter 9, a digital display meter and an indicator lamp 3 of the PLC.
When the main distributing valve limiting plate moves, the fixing block, the adjusting rod and the magnetostrictive displacement sensor connecting rod are driven to move synchronously, so that the magnetostrictive displacement sensor collects data signals through the electromagnetic induction coil, the magnetostrictive displacement sensor data signals are transmitted to the PLC through the isolation transmitter, and data transmission is carried out among the PLC, the industrial personal computer and the LCU through Ethernet communication through the switch. The PLC outputs analog quantity signals of a position switch node of the main distributing valve and a magnetostrictive displacement sensor of the main distributing valve, and is connected with the indicating lamp, the button and the digital display meter through hard wiring. The power module supplies power to the PLC, the switch, the industrial personal computer, the isolation transmitter, the electrical control box and the magnetostrictive displacement sensor through hard wiring.
The PLC controller preferably adopts a CPU module, a BMXCPS2010 power module, a BMX DDI 1602 DI module, a BMX DRA 1605 DO module, a BMX NRP 0201 communication module, a BMX AMI 0410 AI module and a BMX AMO 0410 AO module of the Beijialai series BMEP 582020.
The industrial personal computer preferably adopts 6AV7-260-0BA10-0XX6 of Siemens series.
The exchange employs the Synhua series of EKI-2528.
The isolation transmitter uses the widesmiller series ACT20-CI-2 CI.
The displacement switch adopts ohm dragon series HL 5010.
The POWER conversion module preferably uses the POWER ONE brand LWN 2601-6.
The indicator lamp preferably employs the Schneider series XB2-BVB3LC DC 24V.
The buttons preferably employ the Schneider series XB2BA 31C.
The digital display meter preferably adopts complete series CP-C724-20 mA.
Further, the industrial personal computer 8 is arranged on the front surface of the electric control box 16 and is used for displaying the analog quantity signal, the switching value action record and the speed regulator running state signal of the magnetostrictive displacement sensor 10.
Furthermore, the front of the electric control box 16 is provided with an indicator lamp 3, a button 4, a digital display meter 5, a wiring terminal row 14 and a power switch button 13; the indicator lamp 3 is used for monitoring faults of the magnetostrictive displacement sensor 10 of the main distributing valve of the speed regulator, the position state of the main distributing valve and power failure signals.
As shown in FIG. 2, the digital display meter is arranged on the right side of the first row on the right side of the front surface of the electric control box and is used for displaying the displacement value of the main distributing valve. The indicating lamp is arranged on the right side of the second row on the right side of the front face of the electrical control box and used for monitoring faults of the magnetostrictive displacement sensor of the main pressure distributing valve of the speed regulator, the position state of the main pressure distributing valve and power failure signals. The button is arranged on the right side of the third row on the right side of the front surface of the electric control box and is used for resetting a fault and controlling a main pressure distributing valve of the speed regulator. The power conversion module is installed in the electrical control box and converts AC220V/DC220V to DC24V power class for all devices of the device to supply power.
Further, the bottom of the electric control box 16 is provided with universal wheels 12.
Further, the side of the electrical control box 16 is provided with a heat dissipation hole 15. The heat dissipation holes are arranged on the right side of the electrical control box and used for discharging heat of components in the cabinet.
The handle is installed on the right side of electrical control box for conveniently carry and accomodate. The magnetostrictive displacement sensor is installed on the side face of a main distributing valve base of the speed regulator, a connecting rod of the magnetostrictive displacement sensor is connected with an adjusting rod 19 through a bolt, the adjusting rod is installed with a fixing block 18 through a bolt, the fixing block of a main distributing valve limiting plate is directly connected with a main distributing valve limiting plate through a bolt, a main distributing valve core moves to drive the main distributing valve limiting plate, and then the main distributing valve core moves to drive the fixing block to enable the magnetostrictive displacement sensor to acquire the actual displacement of the main distributing valve.
In a preferred scheme, the monitoring method of the displacement monitoring device for the main distributing valve of the hydraulic turbine governor comprises the following steps:
firstly, an external power supply is connected to a wiring terminal block 14, a power supply conversion module 2 converts and outputs a DC220V power supply into a DC24V power supply, power is supplied to an electric control box through a power switch button 13, and a power supply indicator light of an indicator light 3 of the electric control box is lightened;
and step two, when the unit is in a normal operation state, the monitoring device PLC 1 collects signals of the magnetostrictive displacement sensor of the main pressure distributing valve of the speed regulator in real time. Signals of the magnetostrictive displacement sensor of the speed regulator main pressure distributing valve limiting plate are sent to an AI module of a PLC controller in real time, the PLC controller outputs the displacement signals of the main pressure distributing valve to an industrial personal computer and a digital display meter through the AO module to display the displacement signals of the main pressure distributing valve in real time, and the industrial personal computer records the fault records of the magnetostrictive displacement sensor of the speed regulator main pressure distributing valve;
when the moving distance of a magnetostrictive displacement sensor of a main distributing valve of the speed regulator and the deviation value of a guide vane opening instruction signal exceed a setting value, judging that the main distributing valve follows a fault;
when the data collected by the main pressure distribution valve magnetostrictive displacement sensor is smaller than a low limit set value or larger than a high limit value, judging that the main pressure distribution valve magnetostrictive displacement sensor has a fault; displaying fault alarm signal indication on an industrial personal computer and an indicator lamp, sending the signals to a local control unit through Ethernet communication, and triggering an accident shutdown process to further close guide vanes;
and step three, when the unit is in a shutdown standby state, the monitoring device can monitor the current displacement of the main distributing valve of the speed regulator in real time and execute the step two.
The working principle of the whole device is as follows:
the power conversion module supplies all equipment in the device with DC24V power, and the device can work normally. When the unit sends a guide vane opening adjusting instruction, the main pressure distributing valve of the speed regulator moves the main pressure distributing valve according to the guide vane opening instruction, namely when the unit sends a guide vane opening closing instruction, the main pressure distributing valve of the speed regulator moves towards the closing direction, and the limiting plate of the main pressure distributing valve moves towards the closing direction; when the unit sends an opening instruction of the opening guide vane, the main pressure distribution valve of the speed regulator moves towards the opening direction, and the limiting plate of the main pressure distribution valve moves towards the opening direction; the fixed block of main distributing valve limiting plate also carries out synchronous motion along with main distributing valve moving direction, and the fixed block direct movement magnetostrictive displacement sensor. When the moving distance of a magnetostrictive displacement sensor of a limiting plate of a main distributing valve of the speed regulator and the deviation value of a guide vane opening instruction signal exceed a setting value, judging that the main distributing valve follows a fault; and when the data collected by the magnetostrictive displacement sensor of the main distributing valve limiting plate is smaller than a low-limit set value or larger than a high-limit value, the fault of the magnetostrictive displacement sensor of the main distributing valve is judged. The magnetostrictive displacement sensor collects signals, the signals are connected to the isolation transmitter through a wire and then transmitted to a DI module of a PLC (programmable logic controller) in the electrical control box, and the signals are sent to a DO module and an indicator lamp of the PLC after being operated and processed by a CPU (central processing unit) module of the PLC, so that the position state signals of the main distributing valve of the speed regulator are displayed. The industrial personal computer and the LCU read signals of the magnetostrictive displacement sensor of the main pressure distribution valve through the switch, and the industrial personal computer displays event records and fault signals of the displacement sensor. When the local control unit LCU receives that the main PLC controller has a main distributing valve following fault or a main distributing valve magnetostrictive displacement sensor fault, the local control unit LCU judges that the speed regulator has a serious fault, and then switches the control authority of the speed regulator to a standby controller of the speed regulator. If the main controller and the standby controller have serious faults of the speed regulator at the same time and are not switched to a manual state within five seconds, an accident shutdown process of the monitoring system is triggered.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (6)
1. The utility model provides a hydraulic turbine speed regulator main distributing valve displacement monitoring devices, includes PLC controller (1), keeps apart changer (9) and switch (6), its characterized in that: the PLC (1) is electrically connected with a magnetostrictive displacement sensor (10) through an isolation transmitter (9), and the displacement sensor (10) is used for checking a position signal of a main distributing valve limiting plate (11); the PLC controller (1) is in communication connection with the switch (6), the switch (6) is in communication connection with the industrial personal computer (8) and the local control unit (7) respectively, and the PLC controller (1) is powered by the power supply conversion module (2);
a magnetostrictive displacement sensor guide rail (101) is arranged on the magnetostrictive displacement sensor (10), the magnetostrictive displacement sensor guide rail (101) is in sliding connection with a magnetostrictive displacement sensor connecting rod (102), the magnetostrictive displacement sensor connecting rod (102) is connected with an adjusting rod (19), the adjusting rod (19) is connected with a fixed block (18), and the fixed block (18) is connected with a main distributing valve limiting plate (11); the magnetostrictive displacement sensor (10) is used for being arranged on the side face of a main pressure distribution valve base (21), and the main pressure distribution valve base (21) is connected with a main pressure distribution valve core (20).
2. The displacement monitoring device for a main distributing valve of a hydro governor according to claim 1, characterized in that: the PLC controller (1), the switch (6), the industrial personal computer (8) and the power supply conversion module (2) are arranged in the electric control box (16); the PLC controller (1) comprises a CPU module, a DI module, a DO module, an AI module, an AO module, a PLC power supply module and a communication module;
the DI module is used for collecting a switching value signal and a power failure alarm signal of the position of the main distributing valve;
the DO module is used for outputting a speed regulator control command and controlling the speed regulator to start and stop;
the AI module is used for collecting the analog quantity of a magnetostrictive displacement sensor of a main pressure distributing valve of the speed regulator;
the AO module is used for outputting a displacement analog signal of a main distributing valve of the speed regulator to an industrial personal computer (8) and a digital display meter (5);
a CPU module of the PLC, an industrial personal computer (8) and a local control unit (7) respectively transmit data with the switch (6) in an Ethernet communication mode;
the power supply module is used for supplying power to a DI module, a DO module, an AI module, an AO module power supply, an industrial personal computer (8), a switch (6), an isolation transmitter (9), a digital display meter and an indicator lamp (3) of the PLC.
3. The displacement monitoring device for a main distributing valve of a hydro governor according to claim 2, characterized in that: the industrial personal computer (8) is arranged on the front surface of the electric control box (16) and is used for displaying the analog quantity signal, the switching value action record and the speed regulator running state signal of the magnetostrictive displacement sensor (10).
4. The governor of claim 3, wherein the displacement monitoring device comprises: the front surface of the electric control box (16) is provided with an indicator lamp (3), a button (4), a digital display meter (5), a wiring terminal row (14) and a power switch button (13); the indicator lamp (3) is used for monitoring faults of a magnetostrictive displacement sensor (10) of a main pressure distributing valve of the speed regulator, the position state of the main pressure distributing valve and power failure signals.
5. The governor of claim 4, wherein the displacement monitoring device comprises: the bottom of the electric control box (16) is provided with a universal wheel (12).
6. The governor of claim 5, wherein the displacement monitoring device comprises: the side part of the electric control box (16) is provided with a heat dissipation hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022917538.2U CN213981033U (en) | 2020-12-08 | 2020-12-08 | Displacement monitoring device for main distributing valve of speed regulator of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022917538.2U CN213981033U (en) | 2020-12-08 | 2020-12-08 | Displacement monitoring device for main distributing valve of speed regulator of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981033U true CN213981033U (en) | 2021-08-17 |
Family
ID=77241111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022917538.2U Active CN213981033U (en) | 2020-12-08 | 2020-12-08 | Displacement monitoring device for main distributing valve of speed regulator of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213981033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504106A (en) * | 2020-12-08 | 2021-03-16 | 中国长江电力股份有限公司 | Displacement monitoring device and method for main distributing valve of water turbine speed regulator |
-
2020
- 2020-12-08 CN CN202022917538.2U patent/CN213981033U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504106A (en) * | 2020-12-08 | 2021-03-16 | 中国长江电力股份有限公司 | Displacement monitoring device and method for main distributing valve of water turbine speed regulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104597398B (en) | Intelligent plug-pull type breaker and its monitoring early-warning system | |
| CN202837496U (en) | On-line monitoring system for mechanical property of high-voltage breaker | |
| CN102064610B (en) | Automatic voltage control substation system of distributed power station based on devices | |
| CN102707178B (en) | Method for prewarning and monitoring failures of secondary equipment of power system | |
| CN107276052B (en) | A kind of DC protection system and its control method | |
| CN103823433A (en) | Method for realizing relay protection equipment on-line monitoring by use of communication process analysis | |
| CN103117597B (en) | Wind power generation box type intelligent transformer monitoring system control method | |
| CN213981033U (en) | Displacement monitoring device for main distributing valve of speed regulator of water turbine | |
| CN107436393A (en) | Fuse switch on-Line Monitor Device and method based on Internet of Things Network Communication | |
| CN201570909U (en) | Building special-purpose bus intelligence control system | |
| CN204374379U (en) | Intelligent plug-pull type breaker system | |
| CN110336243B (en) | Long-distance superconducting cable comprehensive monitoring protection device | |
| CN110806715A (en) | Secondary water supply anti-interference dual-PLC redundancy control system | |
| CN112504106A (en) | Displacement monitoring device and method for main distributing valve of water turbine speed regulator | |
| CN113437805A (en) | Station domain visualization anti-error early warning method based on secondary loop online monitoring | |
| CN213981035U (en) | Main distributing valve failure monitoring device for water turbine speed regulator | |
| CN203445507U (en) | Brush generator set integrated intelligent control screen | |
| CN112523930A (en) | Device and method for monitoring operation failure of main distributing valve of water turbine speed regulator | |
| CN104020393B (en) | A kind of with electrical network one-phase short-circuit current Fault Locating Method | |
| CN109139352A (en) | A kind of judgement hydrogovernor master matches the device and measurement method of tripping | |
| CN213631954U (en) | State monitoring device for main distributing valve of speed regulator of water turbine | |
| CN208950766U (en) | A kind of judgement hydrogovernor master matches the device of tripping | |
| CN112360673A (en) | Device and method for monitoring opening degree of guide vane of speed regulator of water turbine | |
| CN211123161U (en) | Circuit breaker loop current monitoring device | |
| CN213981034U (en) | Device for monitoring opening degree of guide vane of speed regulator of water turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |