CN202748362U - On-line automatic monitoring system of oil liquid state of in-use steam turbine oil - Google Patents
On-line automatic monitoring system of oil liquid state of in-use steam turbine oil Download PDFInfo
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- CN202748362U CN202748362U CN 201220312341 CN201220312341U CN202748362U CN 202748362 U CN202748362 U CN 202748362U CN 201220312341 CN201220312341 CN 201220312341 CN 201220312341 U CN201220312341 U CN 201220312341U CN 202748362 U CN202748362 U CN 202748362U
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Abstract
The utility model discloses an on-line automatic monitoring system of the oil liquid state of in-use steam turbine oil. The on-line automatic monitoring system comprises a sampling part, a signal acquisition control part and a data transmission and management part, wherein the sampling part acquires signals of an acquirer and inputs the signals to the signal acquisition control part through a cable so as to carry out signal processing and transmission; and the data transmission and management part analyzes the signals through communication between a lower computer and an upper computer and upper computer software data. The design idea of the system is that the system is enabled to monitor the viscosity, the moisture content and the change of the grain pollution degree grade of the steam turbine oil in an on-line mode in real time; when the viscosity index, the moisture content index or the grain pollution degree index exceeds a set average value threshold or a peak value threshold, light and sound alarm is made in time to indicate the on-site working personnel to take measures to a steam turbine lubricating oil system, so that the operation fault of the steam turbine caused by the change of property of the steam turbine lubricating oil is prevented.
Description
Technical field
The utility model belongs to plant equipment operating condition monitoring technical field, relates to a kind of at usefulness steam turbine oil fluid state online auto monitoring system.
Background technology
As everyone knows, wearing and tearing and insufficient lubrication are the main causes that causes machinery and equipment to damage or break down.The oil liquid monitoring technology that the nearly more than ten years grow up can address this problem preferably, and particularly in recent years, the oil liquid monitoring technology had obtained rapidly development in every profession and trade.Initial oil liquid monitoring only is oil contamination analysis, mainly is the physical and chemical index of analyzing oil product, such as viscosity, moisture, acid number, flash-point, mechanical impurity etc.Usually adopt petroleum products performance index assay method to lubricator detecting, to estimate its qualitative change.The development of suitability for industrialized production makes the more and more large-scale change of machine, complicated and serialization, and is also more and more higher to the maintenance requirement of machine.Therefore, the Machine Fault Diagnosis technology is arisen at the historic moment, and has impelled the diagnostic method of people's active development based on oil liquid monitoring.
At present, the replacing scheme of plant equipment lubricating oil mainly is with reference to the recommendation oil draining period, and the mode of carrying out by service time or working time decides.Machine performance monitoring based on oil analysis has become one of indispensable means in most modern industry maintenances, and obtains a wide range of applications aspect several in monitoring and fault diagnosis, the friction wear research on mechanism of equipment state, the pollution situation of judging lubricating system, the drain period that formulation is correct etc.
In equipment running process; lubricating oil will experience the complexing action of series of physical or chemistry; the physicochemical property of oil product and inner formation can change; variation except oil product generation itself; lubricating system also can produce some metallic particles or nonmetal wear particle; pollutant in the running environment also can be sneaked in the fluid in addition, such as moisture and other pollutants etc.And Oil Monitor System will be sent to the host computer data processor by the ethernet communication cable by on-the-spot round-the-clock real-time dynamic data collection, be sent to central centralized control room by data operation and show with dynamic form.
Briefly, the oil liquid monitoring technology is exactly the situation by wear particle in the performance change of analyzing monitored plant equipment used-oil and the oil, the acquisition plant equipment is lubricated the information with state of wear, thereby the operating condition of evaluation plant equipment and fault predicted, and further determine the technology of failure cause.Use this Technology Need to fully utilize various analytical test means, such as the physico-chemical analysis instrument of routine, infrared spectrometric analyzer, along a grain counter, plasma emission spectrometer, ferrograph analyzer, differential thermal analyzer etc., equipment is lubricated monitoring, in the equipment lubrication management, can reaches good effect.Oil contamination on-line monitoring and control technology is incorporated into the oil contamination control field with automatic control technology, changes traditional pollution control model, realizes real-time dynamic monitoring, control and active maintenance to the oil contamination state.By collection, identification, the judgement to the line monitor signal of each parameter such as contamination level of oil liquid, water cut, structure fluid state on_line monitoring network is proposed, the oil contamination state is carried out real-time dynamic monitoring, diagnosis and control, realization is to the active maintenance of lubricating oil and hydraulic system, can raising serviceable life of each components and parts of system, greatly reduce the failure rate of system.
In the past equipment fluid detection all is the collection in worksite oil sample, goes to finish analysis to the laboratory, and after analysis was finished, data were given on-site maintenance personnel and equipment and technology responsible official again.Because need the plenty of time to transmit oil sample and data, finishing a crude oil sample analysis often needs several hours at least, reaches at most several days or the several months.And show according to investigations: approximately have 50% off-line analysis oil sample not pinpoint the problems, 45% oil sample shows to lose efficacy and is about to occur, and approximately has 5% oil sample to detect serious problems.Like this, not only consumed a large amount of man power and materials, also be difficult to have guaranteed the ageing of data, can't be really tracing trouble in time.For addressing the above problem, in recent years, western developed country utilizes electronic technology and signal processing technology, developed the embedded oil analysis sensor of various new, and on this basis, for various dissimilar equipment, a series of fluid fast detectors have been developed.Portable fluid surveying instrument development is swift and violent, the deficiency that overcome well that laboratory off-line analysis method cost is high, complicated operation, measurement result lags behind, can carry, in-site measurement and scene go out the result, portable fluid surveying instrument comprises portable oil viscosity instrument, ferrograph, grain count instrument etc., but these instruments are not accomplished on-line monitoring truly in reality.
The utility model content
The purpose of this utility model is to develop a kind of at the Oil Monitor System that carries out on-line measurement with characteristics such as the oil property of steam turbine oil, water cut, particle pollution degrees.
The technical solution of the utility model is: a kind of with steam turbine oil fluid state online auto monitoring system, comprising: sampling part, signals collecting control section, data transmission and administrative section; Sampling part is connected with the signals collecting control section by cable; Data transmission and administrative section are by the communication between slave computer and the host computer and upper computer software data analysis.
Described sampling part comprises steam turbine oil master petroleum pipeline, oil transmission gear pump, on-line monitoring system oil-feed arm, buffering oil sump, moisture and temperature combination sensor, viscosity, density, specific inductive capacity, temperature four unification sensors, online particle pollution degree sensor; Wherein, the steam turbine oil of monitoring system institute Real-Time Monitoring flow into the on-line monitoring system and flows back to from steam turbine oil master petroleum pipeline by on-line monitoring system oil-feed arm and on-line monitoring system oil returning branch pipe.In on-line monitoring system, steam turbine oil is divided into two-way, wherein one the road enters into the buffering oil sump, and other one the tunnel directly links to each other with online particle pollution degree sensor; The sensor of two fluid characteristics is installed in the buffering oil sump, and one is moisture and temperature combination sensor, and another is viscosity, density, specific inductive capacity, temperature four unification sensors; Moisture and temperature combination sensor are used for the size of MEASUREMENT OF STEAM turbine fluid water cut, viscosity, density, specific inductive capacity, temperature four unification sensors are used for measuring the fluid behaviour parameter of steam turbine oil, are mainly used to monitor steam turbine oil viscosity, density and specific inductive capacity etc.
Described signals collecting control section comprises adc data capture card, gear-type pump, acoustic-optic alarm, hard disk and slave computer; The signal of moisture and the output of temperature combination sensor is simulating signal, collect slave computer by the adc data capture card, viscosity, density, specific inductive capacity, temperature four unification sensors collect slave computer by the CAN2.0 interface, and the data communication device of particle pollution degree sensor is crossed the RS232 serial line interface and is input to slave computer; Whether the slave computer basis is obtained the analysis result adjustment of sensor signal and the flow of control gear pump, and decide acoustic-optic alarm whether to carry out actuation of an alarm above the threshold value of setting according to the steam turbine oil index of monitoring.
Described data transmission and administrative section, the sensor signal that slave computer is collected is transferred to host computer by computer network, and with its database that deposits host computer in for analyzing, simultaneously in real time each sensor of demonstration to situation of change and the real time data of the Monitoring Data of steam turbine oil.
In the data management software part, need to judge the current data that collect, judge whether it has surpassed the service index of equipment requirement.Mainly judge by two aspects whether current data surpasses the desired index of equipment.Set the mean value threshold value on the one hand, set on the other hand the real time data peak threshold.The mean value threshold value is to judge whether the general trend of data variation has surpassed the operating index requirement of monitored steam turbine oil in measuring process repeatedly; What the real time data peak threshold reflected is the operating index the requirement whether current data variation amplitude of measuring surpasses monitored steam turbine oil, because the data of measuring in real time can be the processes of a fluctuation, the real time data peak threshold can guarantee that the peak value that fluctuates is no more than the requirement of operating index.In addition, data transmission and administrative section also will be analyzed the historical data that each sensor collects, and analyze the development trend that steam turbine oil changes from historical data, use state and the oil changing interval of prediction steam turbine oil.
The utility model can reach following beneficial effect after adopting technique scheme:
(1) realized steam turbine oil at the on-line monitoring with oily characteristic.Overcome needs the steam turbine oil oil sample is got back to the complex process that the off-line assay is carried out in the laboratory in the past, directly goes out a cover monitoring arm from the working connection bypass, realizes the steam turbine oil on-line monitoring.
(2) by cushioning the on-line measurement of oil sump realization steam turbine oil fluid property sensor.The buffering oil sump has been expanded diameter and the volume of fluid sampling arm effectively, can guarantee moisture, temperature and viscosity, density, specific inductive capacity, temperature four unification sensors are inserted in the Buffer Pool and are using the steam turbine oil good contact with measured, reduce the impact that measurement result is subjected to external environment and steam turbine oil flow characteristics in pipeline.
(3) adopt industrial single card microcomputer to realize collection, preservation and the transmission of sensor signal as slave computer.The industrial single card microcomputer stability that adopts is fit to round-the-clock request for utilization, provides the multiple hardwares interface and to be kept in the hard disk the stable collection of sensing data.
(4) in the slave computer historical data in one week of preservation.The industrial single card microcomputer job stability that slave computer adopts is very high, and host computer adopts ordinary PC, relatively easily break down, be the loss of data that prevents that host computer from breaking down and causing slave computer to be uploaded, the sensor signal that is gathered by slave computer in the nearly week all will back up in the hard disk of slave computer, and this data buffer is constantly refreshed.
(5) upper computer software can carry out analyzing and processing to the historical data that collects, and obtains the trend of in use indices variation of steam turbine oil fluid, and the situation of prediction oil property to-be development.
Description of drawings
Fig. 1 is that the utility model is a kind of at usefulness steam turbine oil fluid state online auto monitoring system principle of work schematic diagram;
Fig. 2 is that the utility model is a kind of at usefulness steam turbine oil fluid state online auto monitoring system sampling part structural representation;
Fig. 3 is that the utility model is a kind of at the signals collecting control section structural representation with steam turbine oil fluid state online auto monitoring system;
Fig. 4 is that the utility model is a kind of at usefulness steam turbine oil fluid state online auto monitoring system data transmission and administrative section Structure and Process schematic diagram;
Embodiment
The mentality of designing of native system be by this system can real time on-line monitoring steam turbine oil viscosity, the variation of water percentage and particle pollution degree grade, when the mean value threshold value of surpass setting when viscosity index, water-content indicator or particle pollution degree index or peak threshold, in time make sound and light alarm, the prompting field personnel takes measures to turbine oil system, prevents from causing steam turbine operational failure because of the turbo-engine lube characteristic variations.
The benefit analysis of native system: can monitor the conventional physical and chemical index of fluid in real time in process of production, the trend by data changes to be made record and analyzes the change procedure of fluid.The oil liquid monitoring project all gathers in the collector mode, transmits by telecommunication cable with digital signal, in the whole process without other loss.In Central Control Room control desk centralized displaying, comprise real time data, trend map, fluid index variation warning after the comprehensive calculation process of data process.The variation that oil product in the operational process is occurred is reminded and is reported to the police, and according to the corresponding variation suggestion of handling it.By the accumulation of time and the analysis of data the variation of fluid physics and chemistry is made prediction, change oil thereby reach with matter, and the early stage improper friction phenomenon that occurs of equipment is made early warning.The accumulation of data also can concern the little change between all indexs of fluid to recording, by the analysis of data and the parsing of Data-Link, can search the root of the chronic irregular change of some equipment oil products.
Further specify concrete technical scheme of the present utility model below in conjunction with accompanying drawing.The general diameter of the conveyance conduit of steam turbine oil is thicker in the site environments such as generating plant, and still, the scene does not allow existing oil pipe is carried out the processing processing such as perforate.Therefore, carry out mode that the on-line monitoring of fluid must be by arm and will be incorporated into the Real-Time Monitoring that could realize in the Online Monitoring Control cabinet at the usefulness steam turbine oil with oil in the oil pipe.
Shown in Figure 1, using steam turbine oil fluid state online auto monitoring system principle of work schematic diagram for the utility model is a kind of.Sampling part A is with the signals collecting of collector, gather control section B by the cable input signal and carry out signal processing transmission, data transmission and administrative section C analyze by the communication between slave computer (14) and the host computer (15) and host computer (15) software data.
Shown in Figure 2, steam turbine oil master petroleum pipeline 1 is drawn on-line monitoring system oil-feed arm 3 and on-line monitoring system oil returning branch pipe 8 by two three-way pipes.Output terminal at two three-way pipes of steam turbine oil master petroleum pipeline 1 all respectively has a throttling valve, be used for turn-offing the steam turbine oil that on-line monitoring system oil-feed arm 3 flow into on-line monitoring system oil returning branch pipe 8, be convenient to the operation of on-line monitoring system when more emat sensor is with maintenance.On-line monitoring system oil-feed arm 3 links to each other with oil transmission gear pump 2, and oil transmission gear pump 2 flows in on-line monitoring system and finally flow back into on-line monitoring system oil returning branch pipe 8 for steam turbine oil provides necessary pressure differential.Fluid to be measured is divided into two-way after entering on-line monitoring system, and one the tunnel enters buffering oil sump 4, a tunnel enters online particle pollution degree sensor 7.
The purpose that buffering oil sump 4 is set mainly contains two aspects and considers, first, fluid flowing velocity in the on-line monitoring system oil-feed arm 3 is larger, can to should be the characteristic variations of liquid of flows through sensor too fast if sensor directly accesses on-line monitoring system oil-feed arm 3, and can not reflect the characteristic variations situation of tested steam turbine oil comprehensively, thereby buffering oil sump 4 is set can effectively cushions the fluid flowing velocity, make the measurement data of the sensor of buffering in the oil sump 4 more accurate; The second, on-line monitoring system oil-feed arm 3 calibers can not insert the larger sensor of volume, thereby, provide a larger oil storage space by buffering oil sump 4, can make things convenient for sensor layout and with the good contact of fluid.
Two kinds of fluid sensors are installed in the buffering oil sump 4 of on-line monitoring system described in the utility model, and one is moisture and temperature combination sensor 5, and another is viscosity, density, specific inductive capacity, temperature four unification sensors 6.What moisture and temperature combination sensor 5 were exported is simulating signal, and wherein the moisture signal is voltage signal output, and measurement range is at 0-1000ppm; Temperature signal is the thermal resistance reflection that utilizes negative temperature coefficient, thereby can be that change in voltage calculates the relation between thermal resistance and the temperature with the thermal resistance shift conversion by external circuits.Therefore need by adc data capture card 9 collection of simulant signal of sensor to slave computer, specifically as shown in Figure 3.Viscosity, density, specific inductive capacity, temperature four unification sensors 6 have the digital signal interface of a compatible CAN2.0, four all monitoring parameters are all read and store into by the slave computer integrated circuit board in the hard disk of slave computer by the CAN2.0 bus, and its connection as shown in Figure 3.By the mode of perforate and processing screw hole on buffering oil sump 4, these two sensors are screwed into to be fixed in the hole on the buffering oil sump 4 fluid in the buffering oil sump 4 is monitored.
The online particle pollution degree sensor 7 of described fluid is by the RS232 serial ports granule number data in each particle diameter rate range to be exported, the RS232 serial ports of slave computer 14 is communicated by letter with online particle pollution degree sensor 7, the oil contamination degrees of data is read into storage in the slave computer 14, and then is uploaded to host computer 15.Simultaneously, possess digital display function on online particle pollution degree sensor 7 panels, can show in real time the current contamination level of oil liquid class information that measures of sensor.
Shown among Fig. 3 is collecting sensor signal transmission of the present utility model and control structure schematic diagram.Slave computer 14 comprises CPU, internal memory, hard disk 12 each, have six USB2.0 interfaces, ten of RS232 serial line interfaces, the compatible RS485 interface of part serial line interface wherein, the CAN2.0 interface on the slave computer 14 is realized by the interface card that a RS232 turns CAN2.0.Be connected by USB interface between adc data capture card 9 and the slave computer 14 and realize data transmission and control function.In addition, slave computer 14 is used for two performance elements of control, and one is that 10, one of gear-type pumps are acoustic-optic alarms 11.Wherein, the controller of gear-type pump 10 is connected with slave computer 14 by RS232, and slave computer 14 will be transferred to the gear-type pump controller by the RS232 interface to the setting data of gear-type pump flow velocity; After on-line monitoring system detected some index of fluid and surpasses setting threshold, slave computer 14 drove acoustic-optic alarms 11 and sends that the sound and light alarm signal prompt is current a fluid index exceeding standard, needs to pay close attention to oil system and also takes some measures.
Fig. 4 is data transmission and administrative section data stream and structure flow chart.Reflected that in detail whole upper computer software and slave computer software carry out the data mobility status of data transmission and control by network interface, illustrated the workflow that upper computer software is communicated by letter with slave computer simultaneously.The concrete function of upper computer software is described below:
(1), server software and hardware sensor data communication mechanism: adopt heartbeat packet, hardware sensor (slave computer 14) is duration announcement server (host computer 15) self presence fixedly.After host computer 15 response success, slave computer 14 sends sensing data.And returning the raw data that slave computer 14 gathers, the result after the server end formula calculates is used for slave computer 14 screen displays.
(2), in real time control: host computer 15 is the duty of control slave computer 14 in real time, and slave computer provides function, mechanism to be called control slave computer 14 duties and abnormal alarm by host computer 15.
(3), raw data is stored: after slave computer 14 raw data that receive are unpacked, directly deposit database in, for the later reference counterfoil.
(4), formula substitution: after the raw data of reading database, behind the substitution formula, be presented in the interface, foreground.The computing basic operation comprises: the addition subtraction multiplication and division arithmetic, and square evolution logarithm etc., different pieces of information item algorithm is different.
(5), display mode: display mode shows according to the odd-numbered day trend map, reflects that namely real time data reflects again odd-numbered day data variation trend.
(6), abnormal alarm: every data item field arranges the critical setting of dual-alarm: 1. the data bound is interval; 2. the data average value ranges is interval.Concrete scope is arranged by the user, when triggering wherein each alarm.
(7), data sheet: every item number is according to establishing the trend map form, and the time range interval is selected by the user.Report data should be the data processed of formula substitution but not raw data form.
(8), raw data is encrypted: after raw data is read by sensor device, press user-defined format and encrypt storage.
(9), raw data derives: design data derives authority module, by the user authority is set, and derives respective field.
(10), Operation Log: host computer 15 records the general operation daily records, such as switchgear operation person, time, the projects such as operation, data exception of doing.
Claims (3)
1. one kind with steam turbine oil fluid state online auto monitoring system, comprising: sampling part (A), signals collecting control section (B); It is characterized in that: sampling part (A) is connected with signals collecting control section (B) by cable.
2. according to claim 1 a kind of at usefulness steam turbine oil fluid state online auto monitoring system, it is characterized in that: sampling part (A) comprising: steam turbine oil master petroleum pipeline (1), oil transmission gear pump (2), on-line monitoring system oil-feed arm (3), buffering oil sump (4), moisture and temperature combination sensor (5), viscosity, density, specific inductive capacity, temperature four unification sensors (6), online particle pollution degree sensor (7) and on-line monitoring system oil returning branch pipe (8); Steam turbine oil master petroleum pipeline (1) in the sampling part (A) is connected 8 with on-line monitoring system oil-feed arm (3) with the on-line monitoring system oil returning branch pipe by two three-way pipes) be connected, on-line monitoring system oil-feed arm (3) is connected with oil transmission gear pump (2), and on-line monitoring system oil-feed arm (3) is connected 8 with the on-line monitoring system oil returning branch pipe) respectively with buffering oil sump (4) be connected particle pollution degree sensor (7) and be connected; Moisture and temperature combination sensor (5) and viscosity, density, specific inductive capacity, temperature four unification sensors (6) are installed in buffering oil sump (4).
3. according to claim 1 a kind of at usefulness steam turbine oil fluid state online auto monitoring system, it is characterized in that: signals collecting control section (B) comprising: adc data capture card (9), gear-type pump (10), acoustic-optic alarm (11), hard disk (12); Adc data capture card (9) in the signals collecting control section (B), gear-type pump (10), acoustic-optic alarm (11), hard disk (12) are connected with slave computer (14) respectively.
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| CN 201220312341 CN202748362U (en) | 2012-07-01 | 2012-07-01 | On-line automatic monitoring system of oil liquid state of in-use steam turbine oil |
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| CN 201220312341 CN202748362U (en) | 2012-07-01 | 2012-07-01 | On-line automatic monitoring system of oil liquid state of in-use steam turbine oil |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452959A (en) * | 2013-09-07 | 2013-12-18 | 淮南国力液压装备有限公司 | Online comprehensive detection system for oil |
| CN107884448A (en) * | 2017-11-12 | 2018-04-06 | 高飞 | A kind of device for being used to detect oil content |
| CN107884450A (en) * | 2017-11-12 | 2018-04-06 | 高飞 | A kind of lubricating oil detection means |
| CN109162315A (en) * | 2018-10-25 | 2019-01-08 | 徐州徐工挖掘机械有限公司 | A method of it prevents from damaging hydraulic component because of hydraulic deterioration of oil |
| CN110352350A (en) * | 2017-07-28 | 2019-10-18 | 日立建机株式会社 | Oily diagnostic system |
| CN110397476A (en) * | 2019-08-16 | 2019-11-01 | 苏州热工研究院有限公司 | A kind of nuclear power steam turbine oil product on-line monitoring analysis system and method |
| CN110954314A (en) * | 2019-12-18 | 2020-04-03 | 北京昊鹏智能技术有限公司 | Equipment wear prediction method and device |
| CN112881659A (en) * | 2019-11-29 | 2021-06-01 | 钦烁实验器材(上海)有限公司 | Data contrast analysis system for oil analysis |
-
2012
- 2012-07-01 CN CN 201220312341 patent/CN202748362U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452959A (en) * | 2013-09-07 | 2013-12-18 | 淮南国力液压装备有限公司 | Online comprehensive detection system for oil |
| CN103452959B (en) * | 2013-09-07 | 2015-12-02 | 淮南国力液压装备有限公司 | The online comprehensive detection system of a kind of fluid |
| CN110352350A (en) * | 2017-07-28 | 2019-10-18 | 日立建机株式会社 | Oily diagnostic system |
| CN107884448A (en) * | 2017-11-12 | 2018-04-06 | 高飞 | A kind of device for being used to detect oil content |
| CN107884450A (en) * | 2017-11-12 | 2018-04-06 | 高飞 | A kind of lubricating oil detection means |
| CN109162315A (en) * | 2018-10-25 | 2019-01-08 | 徐州徐工挖掘机械有限公司 | A method of it prevents from damaging hydraulic component because of hydraulic deterioration of oil |
| CN110397476A (en) * | 2019-08-16 | 2019-11-01 | 苏州热工研究院有限公司 | A kind of nuclear power steam turbine oil product on-line monitoring analysis system and method |
| CN112881659A (en) * | 2019-11-29 | 2021-06-01 | 钦烁实验器材(上海)有限公司 | Data contrast analysis system for oil analysis |
| CN110954314A (en) * | 2019-12-18 | 2020-04-03 | 北京昊鹏智能技术有限公司 | Equipment wear prediction method and device |
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