CN114777003A - Power plant auxiliary engine lubricating oil monitoring system and method - Google Patents

Power plant auxiliary engine lubricating oil monitoring system and method Download PDF

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Publication number
CN114777003A
CN114777003A CN202210600109.3A CN202210600109A CN114777003A CN 114777003 A CN114777003 A CN 114777003A CN 202210600109 A CN202210600109 A CN 202210600109A CN 114777003 A CN114777003 A CN 114777003A
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CN
China
Prior art keywords
oil
lubricating oil
parameters
power plant
sensor group
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Pending
Application number
CN202210600109.3A
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Chinese (zh)
Inventor
陈颖
唐荣富
沙德生
余长开
吴迅
吴国民
梁晏萱
邹歆
徐景悦
高开峰
李想
陈飞云
张丹平
兰小洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaneng Clean Energy Research Institute
Huaneng Chongqing Luohuang Power Generation Co Ltd
Original Assignee
Huaneng Clean Energy Research Institute
Huaneng Chongqing Luohuang Power Generation Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Huaneng Clean Energy Research Institute, Huaneng Chongqing Luohuang Power Generation Co Ltd filed Critical Huaneng Clean Energy Research Institute
Priority to CN202210600109.3A priority Critical patent/CN114777003A/en
Publication of CN114777003A publication Critical patent/CN114777003A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N29/00Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/04Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N29/00Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N39/00Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/06Arrangements for conditioning of lubricants in the lubricating system by filtration

Abstract

The invention belongs to the technical field of measurement, and particularly relates to a power plant auxiliary engine lubricating oil monitoring system and a method, wherein the power plant auxiliary engine lubricating oil monitoring system comprises a sensor group, a sensor group and a monitoring device, wherein the sensor group is arranged on an oil path of a lubricating oil tank of an auxiliary engine; the signal output end of the sensor group is connected with the signal input end of the data acquisition and transmission module; the system server comprises a dynamic model module, an equipment interlocking module and a fault early warning module, and the system server monitors the state parameters and the oil parameters of the lubricating oil in real time through the sensor group, replaces manual sampling to detect the oil quality, improves the reliability and the accuracy of data, and effectively improves the monitoring efficiency of the lubricating oil.

Description

Power plant auxiliary engine lubricating oil monitoring system and method
Technical Field
The invention belongs to the technical field of measurement, and particularly relates to a power plant auxiliary engine lubricating oil monitoring system and method.
Background
The auxiliary machinery of the power plant mainly comprises a blower, an induced draft fan, a primary fan and the like, and is an important component of power plant equipment, and the safe and stable operation of a unit can be influenced by the fault of the auxiliary machinery. The lubricating oil is like the 'blood' of the auxiliary equipment, and influences the operation safety and the service life of the auxiliary equipment. Traditional lubricating oil fluid monitoring adopts on-the-spot sample, and off-line measuring not only cycle length, data lag, and the sample detection process is loaded down with trivial details moreover, easily produces secondary pollution, greatly reduces and detects data reliability.
Disclosure of Invention
The invention aims to provide a power plant auxiliary engine lubricating oil monitoring system and a power plant auxiliary engine lubricating oil monitoring method, and aims to solve the technical problems of long process period and low reliability of the conventional auxiliary engine lubricating oil monitoring process.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the monitoring system for the lubricating oil of the auxiliary machine of the power plant comprises a sensor group, wherein the sensor group is arranged on an oil path of a lubricating oil tank of the auxiliary machine and is used for acquiring the state parameters and oil parameters of the lubricating oil in the lubricating oil tank;
the signal output end of the sensor group is connected with the signal input end of the data acquisition and transmission module, and the data acquisition and transmission module is used for processing the lubricating oil state parameters and the oil parameters and uploading the parameters to a system server;
the system server comprises a dynamic model module, an equipment interlocking module and a fault early warning module;
the dynamic model module is used for calculating a predicted value of the dynamic model according to the collected lubricating oil state parameters, oil parameters and parameter historical data;
the equipment interlocking module is used for controlling the auxiliary machine to be opened and closed according to the lubricating oil state parameters and the oil parameters;
and the fault early warning module is used for giving an alarm when the lubricating oil state parameters and the oil parameters are abnormal or the sensor group fails.
The invention is further improved in that: the system server is also connected with a plurality of databases, and the databases comprise an SIS real-time/historical database and a dynamic model database.
The invention is further improved in that: an electric heater is arranged in the lubricating oil tank.
The invention is further improved in that: the sensor set comprises an oil temperature and oil level combined probe, a differential pressure transmitter, a multi-parameter oil sensor and a pressure transmitter, wherein the oil temperature and oil level combined probe is arranged inside a lubricating oil tank, the differential pressure transmitter is arranged at two ends of an oil filter, the pressure transmitter is arranged at one end of an oil supply pipe or an oil return pipe adjacent to an auxiliary machine, and the multi-parameter oil sensor is arranged on the oil supply pipe at one side of an oil outlet of the oil filter.
The invention is further improved in that: the data acquisition and transmission module is a data acquisition card.
The invention is further improved in that: the data acquisition card is arranged in the cabinet.
The invention is further improved in that: and the signal end of the system server is connected with the signal end of the workstation.
The invention is further improved in that: the lubricating oil state parameters comprise oil temperature, oil level and oil pressure; the oil parameters include dynamic viscosity, moisture, metal abrasive particles, dielectric constant, temperature and density.
The invention is further improved in that: and a 5G factory private network is arranged between the signal end of the system server and the signal end of the workstation station.
In a second aspect, a method for monitoring lubricating oil of an auxiliary machine of a power plant includes the following steps:
installing a sensor group on an oil path of a lubricating oil tank of an auxiliary machine, and acquiring a lubricating oil state parameter and an oil parameter;
the dynamic model module on the system server acquires historical data of the lubricating oil state parameters and the oil liquid parameters and real-time data of the lubricating oil state parameters and the oil liquid parameters, establishes a state matrix, constructs oil system dynamic parameter models in different running states through a multivariate variable estimation technology, and acquires predicted values of the dynamic models;
and when the predicted value of the dynamic model is larger than the real-time data of the lubricating oil state parameter and the oil parameter, the fault early warning module on the system server sends out an alarm.
Compared with the prior art, the invention has at least the following advantages:
(1) the invention carries out real-time monitoring on the state parameters of the lubricating oil and the oil parameters through the sensor group, replaces manual sampling to detect the oil quality, improves the reliability and the accuracy of data and effectively improves the monitoring efficiency of the lubricating oil;
(2) the dynamic model module and the database are utilized, early warning of the early fault of the auxiliary engine lubricating oil system can be achieved, a processing scheme is provided according to the fault mechanism, operation and maintenance personnel are helped to take measures in time, and the probability of auxiliary engine fault damage caused by the lubricating oil system fault, oil product degradation and the like is greatly reduced.
(3) The invention adopts the integrated sensor to realize multi-parameter measurement, reduces the influence on the pipeline of the crude lubricating oil system and is convenient for later maintenance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention. In the drawings:
FIG. 1 is a system structure diagram of a lubricating oil monitoring system for power plant auxiliary machinery of the present invention;
FIG. 2 is a flow chart of a method for monitoring lubricating oil of an auxiliary machine of a power plant according to the present invention;
fig. 3 is a schematic structural diagram of a lubricating oil monitoring system for power plant auxiliary machinery according to the present invention.
In the figure: 1. a lubricating oil tank; 2. an auxiliary machine; 3. a cabinet; 4. a data acquisition card; 5. a system server; 6. a workstation station end; 7. an electric heater; 8. a pressure transmitter; 9. a multi-parameter oil sensor; 10. an oil filter; 11. an oil temperature and oil level combined probe; 12. a differential pressure transmitter; 13. an oil supply pipe; 14. an oil return pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Example 1
A power plant auxiliary engine lubricating oil monitoring system is shown in figure 1 and comprises a sensor group used for measuring a power plant auxiliary engine lubricating oil state parameter and an oil parameter. The lubricating oil state parameters comprise oil temperature, oil level and oil pressure; the oil parameters include viscosity, moisture, metal abrasive particles, dielectric constant, temperature, density, and the like. The state parameters of the lubricating oil are measured by adopting an oil temperature and oil level combined probe 11, a pressure transmitter 8 and a differential pressure transmitter 12; the oil parameters are measured by a multi-parameter oil sensor 9.
Various parameters measured by the sensor group are transmitted to the data acquisition and transmission module, the data acquisition and transmission module is used for acquiring original data measured by the sensor group, processing the data and transmitting the processed signals to the system server, and the data acquisition and transmission module is an acquisition card.
And the system server is used for data storage and operation and carries a dynamic model module, a fault early warning module and an equipment interlocking module.
The dynamic model module acquires historical parameter data and real-time data, establishes a state matrix by using a data mining technology, and constructs dynamic parameter models of the oil system in different running states by using a multivariate variable estimation technology to acquire predicted values of the dynamic models.
The device interlocking module is based on configuration software, realizes linkage and locking of parameters such as oil temperature, oil level and oil pressure on related devices, controls the air feeder to be closed when the oil pressure of lubricating oil is too low, and starts the electric heater to heat the lubricating oil when the oil temperature is too low.
The fault early warning module is used for alarming the abnormal conditions of the monitored parameters, including over-threshold alarming, trend alarming and sensor fault alarming.
The over-threshold alarm comprises a fixed threshold and a dynamic threshold, the fixed threshold is a preset thermal fixed value, the dynamic threshold is a dynamic model estimated value, and when the measured value of the sensor group exceeds the dynamic threshold, the alarm is given.
And (4) alarming when the trend alarm indicates that the parameters change abnormally within a certain time (non-instantaneous), and early warning if the oil level does not reach the low oil level alarm but drops continuously within a period of time and possibly leaks.
The sensor fault alarm comprises sensor damage, short circuit or open circuit of a measuring loop and the like.
The system server is connected with the workstation through a 5G factory dedicated network, and the 5G factory dedicated network is used for constructing an auxiliary engine lubricating oil detection system network, so that reliable data acquisition and stable data transmission between the system server and the workstation end are realized.
The system server is also connected with a plurality of databases for data storage, management and sharing, and the plurality of databases comprise an SIS real-time/historical database and a dynamic model database.
The workstation end is used for operation and maintenance personnel to check and operate, is used for displaying real-time parameters and alarm information of the auxiliary engine lubricating oil, and is used for adjusting and watching historical trends of the parameters and early warning content, and comprises a computer end, a mobile end, an LED large screen and the like.
Example 2
Referring to fig. 2, a method for monitoring lubricating oil of an auxiliary machine of a power plant includes the following steps:
installing a sensor group in an auxiliary engine lubricating oil loop, and collecting lubricating oil state parameters and oil parameters;
the data acquisition and transmission module is used for carrying out data processing on the acquired lubricating oil state parameters and the oil parameters;
the linkage and locking of the lubricating oil state parameters and the oil parameters to related equipment are realized through an equipment interlocking module on a system server;
the dynamic model module on the system server acquires historical data of the lubricating oil state parameters and the oil liquid parameters and real-time data of the lubricating oil state parameters and the oil liquid parameters, establishes a state matrix, constructs oil system dynamic parameter models in different running states through a multivariate variable estimation technology, and acquires predicted values of the dynamic models;
when the predicted value of the dynamic model is larger than the real-time data of the state parameters of the lubricating oil and the oil parameters, a fault early warning module on a system server gives an alarm, the system server gives an alarm for the abnormal condition of the parameters, displays the alarm information at a workstation end, and calls a database to give a processing suggestion.
Example 3
As shown in fig. 3, a power plant auxiliary engine lubricating oil monitoring system is arranged on a power plant auxiliary engine 2, a lubricating oil tank 1 and an oil path, an oil outlet of the lubricating oil tank 1 is connected with an oil inlet of the power plant auxiliary engine 2 through an oil supply pipe 13, an oil outlet of the power plant auxiliary engine 2 is connected with an oil inlet of the lubricating oil tank 1 through an oil return pipe 14, an electric heater 7 and an oil temperature and level combined probe 11 are arranged inside the lubricating oil tank 1, the oil temperature and level combined probe 11 is used for measuring the oil temperature and the oil level of the lubricating oil tank 1, the electric heater 7 is used for heating lubricating oil in the lubricating oil tank 1, and the oil temperature is set to alarm to enable the electric heater 7 and the oil temperature and level combined probe 11 to be in a linkage configuration; the oil level is also provided with a high-low alarm, so that the auxiliary machine 2 and the oil temperature and oil level combined probe 11 are in a chain configuration;
an oil filter 10 is arranged on the oil supply pipe 13, positive pressure and negative pressure of a differential pressure transmitter 12 are arranged at two ends of the oil filter 10, and a differential pressure high alarm is arranged on the differential pressure transmitter 12 to judge whether the oil quality is poor or not and whether the oil filter 10 is blocked or not.
The pressure transmitter 8 is arranged on the oil supply pipe 13 or the oil return pipe 14 and used for measuring pressure of a lubricating oil pipeline, the pressure transmitter 8 can be installed on the oil supply pipe 13 or the oil return pipe 14 according to requirements, the position close to the auxiliary machine 2 is provided with pressure level alarm, and the pressure level alarm is used for interlocking configuration of the auxiliary machine 2.
The multi-parameter oil sensor 9 is used for monitoring dynamic viscosity, moisture, metal abrasive particles, dielectric constant, temperature and density of lubricating oil, is arranged on an oil supply pipe 13 at the outlet of the oil filter 10, and is used for giving an alarm when the moisture, the metal abrasive particles and the dielectric constant are high and giving an alarm when the other parameters are high.
The oil temperature and oil level combined probe 11, the differential pressure transmitter 12, the pressure transmitter 8 and the multi-parameter oil sensor 9 are connected to the data acquisition card 4 through cables, and the data acquisition card 4 is installed in the cabinet 3.
The data acquisition card 4 transmits the acquired and processed signals to the system server 5, the system server 5 calculates and analyzes the signals, and the signals are displayed, checked and operated through the workstation 6, wherein the workstation 6 comprises a computer end, a mobile end and an LED large screen.
The interlocking configuration among different devices is realized through a DCS system.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or are equivalent to the scope of the invention are intended to be embraced therein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. The power plant auxiliary engine lubricating oil monitoring system is characterized by comprising a sensor group, wherein the sensor group is arranged on an oil path of a lubricating oil tank (1) of an auxiliary engine (2) and is used for collecting lubricating oil state parameters and oil parameters in the lubricating oil tank (1);
the signal output end of the sensor group is connected with the signal input end of the data acquisition and transmission module, and the data acquisition and transmission module is used for processing the lubricating oil state parameters and the oil parameters and uploading the parameters to a system server (5);
the system server comprises a dynamic model module, an equipment interlocking module and a fault early warning module;
the dynamic model module is used for calculating a dynamic model estimated value according to the acquired lubricating oil state parameters, the acquired oil parameters and the acquired parameter historical data;
the equipment interlocking module is used for controlling the auxiliary machine (2) to be opened and closed according to the lubricating oil state parameters and the oil parameters;
and the fault early warning module is used for giving an alarm when the lubricating oil state parameters and the oil parameters are abnormal or the sensor group is in fault.
2. The power plant auxiliary machine lubricating oil monitoring system according to claim 1, wherein the system server (5) is further connected with a plurality of databases, and the databases comprise an SIS real-time/historical database and a dynamic model database.
3. A power plant auxiliary machinery lubricating oil monitoring system according to claim 1, characterized in that an electric heater (7) is arranged inside the lubricating oil tank (1).
4. The power plant auxiliary engine lubricating oil monitoring system according to claim 1, wherein the sensor group comprises an oil temperature and oil level combined probe (11), a differential pressure transmitter (12), a multi-parameter oil sensor (9) and a pressure transmitter (8), the oil temperature and oil level combined probe (11) is arranged inside the lubricating oil tank (1), the differential pressure transmitter (12) is arranged at two ends of the oil filter (10), the pressure transmitter (8) is arranged at one end of the oil supply pipe (13) or the oil return pipe (14) adjacent to the auxiliary engine (2), and the multi-parameter oil sensor (9) is arranged on the oil supply pipe (13) at one side of the oil outlet of the oil filter (10).
5. The system for monitoring lubricating oil for power plant auxiliary machinery, according to claim 1, wherein the data acquisition and transmission module is a data acquisition card (4).
6. A power plant auxiliary engine lubricating oil monitoring system according to claim 5, characterized in that the data acquisition card (4) is arranged in the cabinet (3).
7. A power plant auxiliary machine lubricating oil monitoring system according to claim 1, characterized in that the signal terminal of the system server (5) is connected with the signal terminal of the workstation terminal (6).
8. The power plant auxiliary engine lubricating oil monitoring system of claim 1, wherein the lubricating oil state parameters include oil temperature, oil level and oil pressure; the oil parameters include dynamic viscosity, moisture, metal abrasive particles, dielectric constant, temperature and density.
9. The power plant auxiliary engine lubricating oil monitoring system according to claim 8, wherein a 5G plant private network is used between the signal end of the system server (5) and the signal end of the workstation (6).
10. A method for monitoring lubricating oil of an auxiliary machine of a power plant is characterized by comprising the following steps:
installing a sensor group on an oil path of a lubricating oil tank (1) of an auxiliary machine (2), and collecting lubricating oil state parameters and oil parameters;
the dynamic model module on the system server acquires historical data of the lubricating oil state parameters and the oil liquid parameters and real-time data of the lubricating oil state parameters and the oil liquid parameters, establishes a state matrix, constructs oil system dynamic parameter models in different running states through a multivariate variable estimation technology, and acquires predicted values of the dynamic models;
and when the predicted value of the dynamic model is larger than the real-time data of the lubricating oil state parameter and the oil parameter, the fault early warning module on the system server sends out an alarm.
CN202210600109.3A 2022-05-30 2022-05-30 Power plant auxiliary engine lubricating oil monitoring system and method Pending CN114777003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210600109.3A CN114777003A (en) 2022-05-30 2022-05-30 Power plant auxiliary engine lubricating oil monitoring system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210600109.3A CN114777003A (en) 2022-05-30 2022-05-30 Power plant auxiliary engine lubricating oil monitoring system and method

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Publication Number Publication Date
CN114777003A true CN114777003A (en) 2022-07-22

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Application Number Title Priority Date Filing Date
CN202210600109.3A Pending CN114777003A (en) 2022-05-30 2022-05-30 Power plant auxiliary engine lubricating oil monitoring system and method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117536951A (en) * 2024-01-09 2024-02-09 布劳宁(上海)液压气动有限公司 Hydraulic lock operation quality evaluation system based on Internet of things

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117536951A (en) * 2024-01-09 2024-02-09 布劳宁(上海)液压气动有限公司 Hydraulic lock operation quality evaluation system based on Internet of things
CN117536951B (en) * 2024-01-09 2024-04-02 布劳宁(上海)液压气动有限公司 Hydraulic lock operation quality evaluation system based on Internet of things

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