CN216352751U - Intelligent oil monitoring and alarming device for hydroelectric generating set - Google Patents
Intelligent oil monitoring and alarming device for hydroelectric generating set Download PDFInfo
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- CN216352751U CN216352751U CN202122773287.XU CN202122773287U CN216352751U CN 216352751 U CN216352751 U CN 216352751U CN 202122773287 U CN202122773287 U CN 202122773287U CN 216352751 U CN216352751 U CN 216352751U
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Abstract
The utility model discloses an intelligent oil monitoring and alarming device of a hydroelectric generating set, which comprises a sampling unit and an oil on-line monitoring device, wherein the sampling unit is connected with the oil on-line monitoring device; the sampling unit is used for sampling the oil guide basin, and the oil online monitoring device is used for controlling the sampling unit in real time. The utility model is based on an on-line monitoring device to carry out real-time test and analysis on the oil quality of the guide bearing, and reminds operators to pay attention to monitoring the oil quality condition of the oil. The device provides guarantee for safe and reliable operation of equipment, and saves labor cost for the power station. The utility model can change the traditional regular oil change or oil filtration into the oil change or oil filtration according to the requirement, thereby prolonging the service life of the oil liquid and reducing the cost of the oil change or oil filtration. The utility model discloses a can provide the support for establishing sound water guide unit oil affairs supervise and management mechanism, also can provide basic data for state maintenance and wisdom power station.
Description
Technical Field
The utility model relates to an intelligent oil monitoring and alarming device for a hydroelectric generating set, which provides support for intelligent power station construction and oil supervision and management mechanisms.
Background
The hydroelectric generating set is used as an important energy conversion form, and the stress and friction of the rotating part and the fixed part are completed and realized through the guide bearing, the oil basin thereof, the thrust bearing and the oil basin thereof. The guide bearing and the thrust bearing use the medium which carries heat and has the function of lubricating the bearing as L-TSA turbine oil.
The guide bearing of the vertical shaft generator mainly comprises an upper guide oil basin, a lower guide oil basin and a thrust oil basin, the water turbine oil basin is a water guide oil basin, the generator guide bearing and the water turbine guide bearing are called as guide bearings for short, a built-in cooler is generally adopted, the cooler is prone to dewing due to internal and external temperature difference, and particularly the water guide bearing is large in oil deterioration risk due to large humidity of a working environment. The guide bearing or the thrust bearing is easy to generate foreign matters with small granularity to pollute oil due to the friction between the black gold tile surface and the shaft collar, and if the pollution is serious, the bearing bush surface can be lost or even burnt, so the cleanliness of the oil for lubricating oil is particularly important for a safe operation system of the bearing.
Vertical hydroelectric set is because of adopting vertical arrangement, leads on, leads down and leads the oil pan with water and all is located rotating part top and inside, consequently leads bearing oil pan bottom and does not set up the sampling tube, and can't get oil on line and carry out the analysis in the unit operation process, only waits that the group can carry out the oil sample after stopping steadily completely. In actual operation, a sampling point for testing the oil quality of lubricating oil in a power plant is generally taken at a sewage pipeline at the bottom of an oil basin after a unit is static, oil is static due to lack of rotary power after the unit is stopped, and the oil sample taken at the sewage pipeline at the bottom cannot completely represent the oil quality of the oil basin, namely the oil quality of the oil basin of the hydroelectric generating set cannot be completely monitored.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects and shortcomings in the prior art, the utility model aims to provide a monitoring, analyzing, controlling and diagnosing integrated system for online monitoring of the oil quality of the mixed-flow type hydroelectric generating set oil and intelligent operation with a purifying device, so that the requirement of real-time analysis of the oil quality of the hydroelectric generating set oil is met, and the safe and stable operation of the hydroelectric generating set is guaranteed.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the intelligent oil monitoring and alarming device of the hydroelectric generating set comprises a sampling unit and an oil on-line monitoring device;
the sampling unit is used for sampling the oil guide basin, and the oil online monitoring device is used for controlling the sampling unit in real time.
The utility model has the further improvement that the sampling unit comprises an oil inlet sampling tube, a sampling frame oil inlet branch sampling tube, a sampling frame oil return branch sampling tube and an oil return sampling tube; one end of the oil inlet sampling tube is a sampling tube oil inlet and is arranged in the hot oil basin, the other end of the oil inlet sampling tube is respectively connected to the oil monitoring system and one end of the sampling frame oil inlet branch sampling tube, and the other end of the sampling frame oil inlet branch sampling tube is connected to the sampling frame; one end of the oil return sampling tube is provided with an oil return port and is arranged in the cold oil basin, the other end of the oil return sampling tube is respectively connected to the oil monitoring system and one end of the sampling frame oil return branch sampling tube, and the other end of the sampling frame oil return branch sampling tube is connected to the sampling frame.
The utility model has the further improvement that the oil inlet sampling tube is provided with an oil inlet stop valve and an oil inlet stop valve of the online monitoring device.
The utility model is further improved in that a sampling frame oil inlet stop valve is arranged on the sampling frame oil inlet branch sampling pipe.
The utility model has the further improvement that the oil return sampling pipe is provided with an oil return stop valve and an online monitoring oil return stop valve.
The utility model is further improved in that a sampling frame oil return stop valve is arranged on the sampling frame oil return branch sampling pipe.
The utility model is further improved in that the oil on-line monitoring device comprises an oil monitoring device fault state fault alarm relay KC1 for outputting fault state alarm information of the oil monitoring device, an oil monitoring device power failure alarm relay KC2 for outputting power failure alarm information of the oil monitoring device, a granularity first-level alarm relay KC3 for outputting oil granularity first-level alarm information, a granularity second-level alarm relay KC4 for outputting oil granularity second-level alarm information and starting a commercial oil filter, a moisture first-level alarm relay KC5 for outputting oil moisture first-level alarm information, a moisture second-level alarm relay KC6 for outputting oil moisture second-level alarm information and starting the commercial oil filter, a dielectric constant first-level alarm relay KC7 for outputting moisture first-level alarm information, a dielectric constant second-level alarm relay KC8 for outputting oil dielectric constant second-level alarm information and starting the commercial oil filter, The device comprises a viscosity low primary alarm relay KC9, a viscosity low secondary alarm relay KC10, a density low primary alarm relay KC11, a density low secondary alarm relay KC12, a granularity sensor fault alarm relay KC13, a micro-water sensor fault alarm relay KC14, a dielectric constant sensor fault alarm relay KC15 and a density sensor fault alarm relay KC16, wherein the viscosity low primary alarm relay KC9 is used for outputting oil viscosity low secondary alarm information and starting a heater, the density low primary alarm relay KC11 is used for outputting density low secondary alarm information and starting a commercial oil filter, the granularity sensor fault alarm relay KC13 is used for outputting granularity relay fault alarm relay information, the micro-water sensor fault alarm relay KC14 is used for outputting micro-water sensor fault alarm information, and the dielectric constant sensor fault alarm relay KC15 is used for outputting dielectric constant relay fault alarm information and the density sensor fault alarm relay KC16 are used for outputting density sensor fault alarm information.
The utility model is further improved in that the sampling unit monitors and collects oil liquid granularity, micro water, dielectric constant, viscosity and density oil liquid parameters in the guide bearing oil basin in real time on line, the oil liquid parameters exceeding the threshold value are compared with the controller threshold value of the oil liquid on-line inspection device, the oil liquid parameters exceed the threshold value and are output by the oil liquid on-line monitoring device controller DO to drive corresponding relays, and then the functions of start-stop control, primary alarm, secondary alarm and relay fault alarm of the oil filter are completed by auxiliary nodes of the relays.
The utility model has at least the following beneficial technical effects:
the utility model is based on an on-line monitoring device to carry out real-time test and analysis on the oil quality of the guide bearing, and reminds operators to pay attention to monitoring the oil quality condition of the oil. The device provides guarantee for safe and reliable operation of equipment, and saves labor cost for the power station. The utility model can change the traditional regular oil change or oil filtration into the oil change or oil filtration according to the requirement, thereby prolonging the service life of the oil liquid and reducing the cost of the oil change or oil filtration. The utility model discloses a can provide the support for establishing sound water guide unit oil affairs supervise and management mechanism, also can provide basic data for state maintenance and wisdom power station.
Drawings
FIG. 1 is a schematic view of a sampling tube.
Fig. 2 is a first schematic diagram of sampling control.
Fig. 3 is a second schematic diagram of sampling control.
Fig. 4 is a third schematic diagram of sampling control.
Description of reference numerals:
1-11 is a sampling pipe oil inlet, 1-12 is an oil inlet stop valve, 1-13 is an oil inlet sampling pipe, 1-14 is an oil inlet stop valve of an online monitoring device, 1-15 is an online monitoring oil return stop valve, 1-16 is a sampling frame oil inlet stop valve, 1-17 is a sampling frame oil return stop valve, 1-18 is a sampling frame oil inlet branch sampling pipe, 1-19 is a sampling frame oil return branch sampling pipe, 1-20 is an oil return sampling pipe, 1-21 is an oil return stop valve, and 1-22 is an oil return port;
the KC1 is a fault state fault alarm relay of the oil monitoring device; the KC2 is a power failure alarm relay of the oil monitoring device; KC3 is a granularity first-level alarm relay; KC4 is a granularity secondary alarm relay; KC5 is a moisture first-level alarm relay; KC6 is a water secondary alarm relay; KC7 is a dielectric constant first-level alarm relay; KC8 is a dielectric constant secondary alarm relay; KC9 is a first-level alarm relay with low viscosity; KC10 is a low-viscosity secondary alarm relay; KC11 is a first-level alarm relay with low density; KC12 is a low-density secondary alarm relay; KC13 is a particle size sensor fault alarm relay; KC14 is a micro water sensor fault alarm relay; KC15 is a dielectric constant sensor fault alarm relay; KC16 is a density sensor malfunction alarm relay.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The oil on-line monitoring device mainly comprises: the particle size classification standard adopts the number of particles of 101 to 250 mu m, and the number of the particles is more than or equal to 16, and the first-level alarm of the exceeding of the first-level particle size is given to the first-level alarm; the number of the particles is more than or equal to 32, the primary particle size exceeds the standard, and a secondary alarm is given; the micro water content is measured by PPM unit, the first-level alarm of the exceeding of the water content in the oil with the micro water content being more than or equal to 1000PPM is carried out, and the second-level alarm of the exceeding of the water content in the oil with the micro water content being more than or equal to 3000 PPM is carried out; the first alarm of dielectric constant exceeding in the oil with dielectric constant more than or equal to 2.2 and the second alarm of dielectric constant exceeding in the oil with dielectric constant more than or equal to 2.5.
In the control principle shown in fig. 1, the particle size test sensor, the micro-water test sensor, the dielectric constant test sensor and the viscosity and density test sensor upload parameters to the on-site monitoring unit by acquiring oil data in real time, the monitoring unit performs node extraction according to a set threshold value, and schematic diagrams such as fig. 2 and 3 are extracted. Fig. 2 mainly includes a controller failure alarm, a power failure alarm, a particle size alarm, a micro water alarm, and a dielectric constant alarm, and fig. 3 mainly includes a viscosity alarm, a density alarm, a particle sensor failure alarm, a micro water failure alarm, a dielectric constant sensor failure alarm, and a viscosity or density sensor failure alarm. A KC1 relay is controlled by monitoring the abnormal working state of a singlechip of the body controller, and one pair of auxiliary contacts is applied to be sent to a unit monitoring system LCU for event highlighting; a control relay KC1 is started through monitoring the abnormity of the direct current power supply system of the monitoring control loop, and one pair of auxiliary contacts of the control relay is sent to a unit monitoring system LCU for event alarm; the oil granularity data is collected through a controller and is divided into a granularity first-level alarm and a granularity second-level alarm, control relays KC3 and KC4 are respectively opened, KC3 uses one pair of auxiliary contacts to be opened to a unit LCU for granularity exceeding first-level event alarm to remind operating personnel of paying attention to the change of oil quality of the oil, namely the granularity exceeds standard, KC4 uses one pair of auxiliary contacts to be opened to the unit LCU for granularity exceeding second-level alarm to remind the operating personnel of oil purification operation, namely micro water seriously exceeds standard, uses the other pair of auxiliary contacts to be opened to an oil inlet-return switching device controller, and an oil filter is started for oil purification operation; the micro water sensor and the controller threshold value are divided into micro water first-level overproof and second-level overproof alarm output control relays KC5 and KC6, KC5 uses one pair of auxiliary contacts to be output to a unit LCU micro water first-level event alarm to remind operating personnel to pay attention to the change of oil quality of oil, namely the micro water overproof, KC6 uses one pair of auxiliary contacts to be output to the unit LCU to carry out micro water overproof second-level alarm to remind the operating personnel to carry out oil purification operation, namely the micro water seriously overproof, uses the other pair of auxiliary contacts to be output to an oil inlet-return switching device controller, and an oil filter is started to carry out oil purification operation; the system is divided into a first-level alarm with over-standard dielectric constant and a second-level alarm control relay KC7 and KC8 by a dielectric constant sensor and a controller and a threshold value exceeding the controller, wherein the KC7 uses one pair of auxiliary contacts to be switched to a first-level event alarm with over-standard dielectric constant of a unit LCU for reminding operating personnel to pay attention to the change of oil quality of oil, namely the dielectric constant is over-standard, the KC8 uses one pair of auxiliary contacts to be switched to the unit LCU for carrying out second-level alarm with over-standard dielectric constant for reminding the operating personnel to carry out oil purification operation, namely the dielectric constant is seriously over-standard, and the other pair of auxiliary contacts is switched to a controller of an oil inlet-return switching device for starting an oil filter for carrying out oil purification operation; the oil heating alarm is divided into a first-level alarm and a second-level alarm over-viscosity control relays KC9 and KC10 and a first-level alarm and a second-level alarm over-density control relays KC11 and KC12 through a viscosity/density sensor, a controller and a threshold value over the controller, wherein the KC9 uses one pair of auxiliary contacts to be opened to a first-level event alarm with low viscosity of a unit LCU for reminding operating personnel of paying attention to the change of oil quality of oil, namely the viscosity is over-standard, if a heater is remotely operated to start an oil basin heater, the KC10 uses one pair of auxiliary contacts to be opened to the unit LCU for carrying out second-level alarm with over-low viscosity and over-standard for reminding the operating personnel to carry out oil heating operation, namely the viscosity is over-low and seriously over-standard; starting the heater to operate by applying the other pair of auxiliary contacts to the oil inlet and return switching device controller; the KC11 is used for reminding operators to pay attention to the change of oil quality of oil by applying an event that one pair of auxiliary contacts are opened to a high-density I-level of the LCU of the unit for alarming, the KC12 is used for applying one pair of auxiliary contacts to be opened to the LCU of the unit for carrying out high-density II-level alarming to remind the operators to carry out oil purification operation, namely the oil is high in density and seriously exceeds the standard, and the other pair of auxiliary contacts is opened to an oil inlet and return switching device controller for starting the operation of an oil filter; the fault of the granularity sensor is judged by the controller and then is controlled by a KC13 relay, and the fault of the granularity sensor is sent to a fault alarm 'granularity sensor fault' of the LCU granularity sensor of the unit by applying a pair of auxiliary contacts; the micro water sensor fault is judged by the controller and then is controlled to be opened by a KC14 relay, and one pair of auxiliary contacts is used for opening to a unit LCU micro water sensor fault alarm 'micro water sensor fault'; the fault of the dielectric constant sensor is judged by the controller and then is controlled by a KC15 relay, and one pair of auxiliary contacts is used for switching to a unit LCU micro water sensor fault alarm, namely 'the fault of the dielectric constant sensor'; and the failure of the viscosity sensor is judged by the controller and then is controlled by a KC16 relay, and one pair of auxiliary contacts is used for switching to the failure alarm 'viscosity sensor failure' of the LCU micro-water sensor of the unit. In fig. 4, all connections from a particle size, micro water content, dielectric constant value, viscosity value, density value sensor to a controller are described, and a 4-20 milliampere local sensor is transmitted to a controller value output and is transmitted to a host computer through communication from the controller to a unit LCU through RS485 for monitoring and value display of operators.
The device shown in figure 4 adopts analog quantity to display analog quantity values of a granularity test sensor, a micro-water test sensor, a dielectric constant test sensor, a viscosity and density test sensor and the like in situ to be sent to a controller, the controller is sent to a liquid crystal display screen in situ through RS485 to display, different colors are displayed according to different values, a normal range value displays green, a primary alarm value displays yellow, and a secondary alarm value displays red.
Although the utility model has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (7)
1. The intelligent oil monitoring and alarming device of the hydroelectric generating set is characterized by comprising a sampling unit and an oil on-line monitoring device;
the sampling unit is used for sampling the oil guide basin, and the oil online monitoring device is used for controlling the sampling unit in real time;
the sampling unit comprises oil inlet sampling pipes (1-13), sampling frame oil inlet branch sampling pipes (1-18), sampling frame oil return branch sampling pipes (1-19) and oil return sampling pipes (1-20); one end of the oil inlet sampling pipe (1-13) is a sampling pipe oil inlet (1-11) and is arranged in the hot oil basin, the other end of the oil inlet sampling pipe is respectively connected to the oil monitoring system and one end of the sampling frame oil inlet branch sampling pipe (1-18), and the other end of the sampling frame oil inlet branch sampling pipe (1-18) is connected to the sampling frame; one end of the return oil sampling pipe (1-20) is provided with an oil return port (1-22) and is arranged in the cold oil basin, the other end of the return oil sampling pipe is respectively connected to the oil monitoring system and one end of the sampling frame return oil branch sampling pipe (1-19), and the other end of the sampling frame return oil branch sampling pipe (1-19) is connected to the sampling frame.
2. The intelligent oil monitoring and alarming device of the hydroelectric generating set according to claim 1, wherein the oil inlet sampling tube (1-13) is provided with an oil inlet stop valve (1-12) and an oil inlet stop valve (1-14) of an online monitoring device.
3. The intelligent oil monitoring and alarming device of the hydroelectric generating set according to claim 2, wherein the sampling frame oil inlet branch sampling pipe (1-18) is provided with a sampling frame oil inlet stop valve (1-16).
4. The intelligent oil monitoring and alarming device of the hydroelectric generating set according to claim 3, wherein the oil return sampling pipe (1-20) is provided with an oil return stop valve (1-21) and an online oil return monitoring stop valve (1-15).
5. The intelligent oil monitoring and alarming device of the hydroelectric generating set according to claim 4, wherein the sampling frame oil return branch sampling pipe (1-19) is provided with a sampling frame oil return stop valve (1-17).
6. The intelligent oil monitoring and alarming device of the hydroelectric generating set as claimed in claim 5, wherein the online oil monitoring device comprises an oil monitoring device fault state failure alarm relay KC1 for outputting fault state alarm information of the oil monitoring device, an oil monitoring device power failure alarm relay KC2 for outputting power failure alarm information of the oil monitoring device, a granularity primary alarm relay KC3 for outputting oil granularity primary alarm information, a granularity secondary alarm relay KC4 for outputting oil granularity secondary alarm information and starting a commercial oil filter, a moisture primary alarm relay KC5 for outputting oil moisture primary alarm information, a moisture secondary alarm relay KC6 for outputting oil moisture secondary alarm information and starting a commercial oil filter, a dielectric constant primary alarm relay KC7 for outputting moisture primary alarm information, a power supply device for supplying power to the oil monitoring device, a granularity primary alarm relay KC3 for outputting oil granularity primary alarm information, a granularity secondary alarm relay KC4 for outputting oil moisture primary alarm information and starting a commercial oil filter, A dielectric constant secondary alarm relay KC8 for outputting oil dielectric constant secondary alarm information and starting a commercial oil filter, a viscosity low primary alarm relay KC9 for outputting oil viscosity low primary alarm information, a viscosity low secondary alarm relay KC10 for outputting oil viscosity low secondary alarm information and starting a heater, a density low primary alarm relay KC11 for outputting density low primary alarm information, the density low secondary alarm relay KC12 is used for outputting oil density low secondary alarm and starting a commercial oil filter, the granularity sensor fault alarm relay KC13 is used for outputting granularity relay fault alarm relay information, the micro water sensor fault alarm relay KC14 is used for outputting micro water sensor fault alarm information, the dielectric constant sensor fault alarm relay KC15 is used for outputting dielectric constant relay fault alarm information, and the density sensor fault alarm relay KC16 is used for outputting density sensor fault alarm information.
7. The intelligent oil monitoring and alarming device of the hydroelectric generating set as recited in claim 6, wherein the sampling unit monitors and collects oil particle size, micro water, dielectric constant, viscosity, density oil parameters in the guide bearing oil basin on line in real time, the oil parameters exceeding the threshold value are compared with the controller threshold value of the on-line oil inspection device, the output of the on-line oil monitoring device controller DO drives the corresponding relay, and then the auxiliary nodes of each relay complete the functions of start-stop control, primary alarm, secondary alarm and relay fault alarm of the oil filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122773287.XU CN216352751U (en) | 2021-11-12 | 2021-11-12 | Intelligent oil monitoring and alarming device for hydroelectric generating set |
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| CN202122773287.XU CN216352751U (en) | 2021-11-12 | 2021-11-12 | Intelligent oil monitoring and alarming device for hydroelectric generating set |
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| CN216352751U true CN216352751U (en) | 2022-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876718A (en) * | 2022-06-23 | 2022-08-09 | 西安热工研究院有限公司 | Water turbine upper guide swing degree standard exceeding handling system and method |
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2021
- 2021-11-12 CN CN202122773287.XU patent/CN216352751U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876718A (en) * | 2022-06-23 | 2022-08-09 | 西安热工研究院有限公司 | Water turbine upper guide swing degree standard exceeding handling system and method |
| CN114876718B (en) * | 2022-06-23 | 2024-03-26 | 西安热工研究院有限公司 | Water turbine upper guide swing degree out-of-standard treatment system and method |
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