CN203299145U - Water-in-oil monitoring instrument - Google Patents
Water-in-oil monitoring instrument Download PDFInfo
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- CN203299145U CN203299145U CN2012206767511U CN201220676751U CN203299145U CN 203299145 U CN203299145 U CN 203299145U CN 2012206767511 U CN2012206767511 U CN 2012206767511U CN 201220676751 U CN201220676751 U CN 201220676751U CN 203299145 U CN203299145 U CN 203299145U
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Abstract
The utility model provides a water-in-oil monitoring instrument which comprises an electromagnetic wave transmission device, a detection device, an analog-digital converter, a treater and a manipulation device, wherein the detection device is used for detecting electromagnetic wave energy in a monitoring medium and connected with the analog-digital converter, the electromagnetic wave transmission device, the analog-digital converter and the manipulation device are all connected with the treater. The water-in-oil monitoring instrument is not only simple, convenient and fast, but also accurate and practical, can be widely applied to positions of an oil field crude oil dehydration station, a transfer station, a metering station, an oil unloading station, an oil delivery pipeline, an oil refinery and the like, needing to be subjected to metering and monitoring of water content in oil.
Description
Technical field
The utility model belongs to oil instrumental analysis technical field, relates to a kind of detection of water content in crude oil, is specifically related to a kind of monitor that detects the Water in oil amount based on the electromagnetic wave method.
Background technology
Crude oil water content is important parameter of petroleum chemical industry, and detecting crude oil water content is that the defeated metering accumulating sale of oil extraction processed collection and condyloma are by question of common concern by processes such as refinings.If crude oil water content detects inaccurate, will directly affect oil well and oil reservoir performance analysis, destroy electrical dewatering and think highly of electric field, reduce dehydrating effect, produce very large energy dissipation to crude oil transmission.Therefore the detection of crude oil water content is very important, always receive much attention, many measuring methods is successively proposed, design multi-form water cut test instrument, but be subject to the impact of many factors due to the crude oil water content measurement, and have complicated nonlinear relationship with its influence factor, lack all the time a kind of not only simple and efficient, but also accurate practical forecast model.
The utility model content
The purpose of this utility model is to provide a kind of simple and efficient, accurate practical Water in oil monitor again.
The Water in oil monitor that the utility model provides comprises electromagnetic wave launcher, surveys sniffer, analog to digital converter, processor and the actuation means of electromagnetic wave energy in the monitoring medium, described sniffer connects described analog to digital converter, and described electromagnetic wave launcher, described analog to digital converter, described actuation means all are connected with described processor.
Also comprise the power module and the display that all with described processor, are connected.
Preferably, described analog to digital converter is AD7799, and described processor is STM32.
Can utilize described Water in oil monitor, the electromagnetic wave signal of permanent width, frequency stabilization is transmitted in moisture oil, utilize the specific inductive capacity of profit different, cause impedance variation, thereby can record the electromagnetic wave signal energy loss, and then obtain the water-retention value in oil.Preferably, described electromagnetic wave signal amplitude is ± 12V that frequency is 5-20MHZ.Electromagnetic wave energy relation after water cut in oil and loss can be carried out parameter calibration and pre-obtaining by actual measurement.Preferably,, according to the impact of temperature on the medium specific inductive capacity, carried out temperature compensation.For example, with temperature sensor PT100 0, carry out temperature compensation, the resistance signal that measures is converted to the 4-20MA current signal.Can, based on the research of early stage to crude oil water content, utilize data and the software of the host computer of Surveillance center.
The Water in oil monitor that the utility model provides is easy and simple to handle, and is quick practical.Can be widely used in crude oil dehydrating station, transfer station, test satellite location, unloading Stations, oil pipeline and refinery etc. needs to measure, monitor the position of Water in oil amount.Due to the excellent performance of this monitor and application widely thereof, give oil, petrochemical industry accurately rapidly monitoring Water in oil amount provide new, effective method and means, be subject to the favorable comment of applying unit.The Water in oil monitor is made strict assessment through the laboratory routine test, through oil field, scene, refinery many places last several years round-the-clock, have damp, an on-line continuous Operation trial, fully demonstrate stable and reliable operation that this instrument has, measure accurately rapidly, fitting operation convenience, safety anti-explosive, need not maintenance, little, lightweight, the little power consumption of strong adaptability, volume, not corrosion, the original in style excellent properties such as harmless.
Description of drawings
Fig. 1 is the structural representation of the utility model Water in oil monitor embodiment;
Fig. 2 is the utility model Water in oil monitor structural representation;
Fig. 3 the utility model Water in oil measuring instrument schematic diagram;
Fig. 4 the utility model Water in oil monitor forms RS485 flow through a network figure;
Fig. 5 the utility model Water in oil monitor 4-20Ma process flow diagram;
Fig. 6 the utility model Water in oil monitor high-precision A/D 7799 process flow diagrams
Fig. 7 is that the utility model Water in oil monitor carries out the process flow diagram of temperature signal collection through the XTR101 modular converter with PT1000.
In figure: 1-electromagnetic wave launcher, 2-sniffer, 3-analog to digital converter, 4-processor, 5-actuation means, 6-display, 7-power module.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the utility model Water in oil monitor is described further.
As shown in Figure 1, this Water in oil monitor comprises electromagnetic wave launcher 1, surveys sniffer 2, analog to digital converter 3, processor 4 and the actuation means 5 of electromagnetic wave energy in the monitoring medium, described sniffer 2 connects described analog to digital converter 3, and described electromagnetic wave launcher 1, described analog to digital converter 3, described actuation means 5 all are connected with described processor 4.Also comprise the power module 7 and the display 6 that all with described processor 1, are connected.
As a specific embodiment, described Water in oil monitor can comprise mounting flange, sensor guide rod, sensor, blowoff valve, measuring instrument, temperature sensor.Flange is used for fixing this measuring instrument, and temperature sensor is used for detected temperatures, is placed on sensor internal, like this can the accurate detection fluid temperature.Blowoff valve is used for discharging dirt, and measuring instrument is used for measuring-signal and processes and then carry out RS485 transmission and carry out remote monitoring.The sensor guide rod is used for protecting sensor, is placed on the outside of sensor, prevents that the spray treatment of sensor is destroyed.
Fig. 2 has represented the Water in oil monitor, and some arrange more specifically, relate generally to following a few part:
Arm processor, switching value output, signals collecting, RS485, the electromagnetic wave emission, LCD12864 shows, power module, the output of 4-20MA electric current, button etc.
The STM32F103RET6 of processor adopting ST company.STM32F series belongs to intermediate size enhancement mode, 32 based on the ARM core with 64 or the microcontroller USB of 128K byte flash memory, CAN, 7 timers, 2 ADC, 9 communication interfaces.
Switching value output is used for reporting to the police, altogether 2 tunnels.
Button can carry out the setting of various parameters, comprises integer, floating number, system time etc.
Address arranges and can be used for carrying out the setting of RS485 address, can know easily this instrument address.
Liquid crystal display LCD12864 adopts ST7565R to control IC, and ST7565 is that a lattice lcd drives chip, and it has parallel and two kinds of interfaces of serial (SPI), by the P/S pin, chooses: P/S=1 is for parallel, and P/S=0 is serial.
The output of 4-20MA electric current can be by the electric current of any 4-20MA of output digital output.
Fig. 3 power module adopts WRD240512-3W, can export simultaneously 5V and 12V voltage, and front end adds polar protective circuit rectifier bridge 2W10, and prevents the TVS pipe of surge and prevent the resettable fuse of overcurrent.
Many of Fig. 4 Water in oil monitors can network consisting, then by the RS485 bus transfer to Surveillance center, carry out remote monitoring.
This Water in oil of Fig. 5 monitor contains water gaging by measurement and then converts corresponding 4-20MA electric current output to.AD5421 be a complete loop service numeral to the 4-20mA transmitter, the power dissipation ratio competing product is low by 50%, area saves 55%.AD5421 is integrated programmable voltage regulating circuit, can provide for the peripheral component in intelligent transducer required low-tension supply.By saving the system power dissipation budget, AD5421DAC makes the system engineer can select more accurate, more high-power sensor electronics, perhaps increases supplementary functions.
That Fig. 6 carries out that signals collecting uses is AD7799.AD7799 is low-power consumption, low noise, the complete AFE (analog front end) that is fit to the high-acruracy survey application, 16/24 sigma-delta type ADC of a built-in low noise, wherein contain the input of 3 difference analogues, the also integrated interior low noise instrument amplifier of sheet, thereby can directly input small-signal.When gain be set to 64, when renewal rate is 4.17Hz, the root mean square of AD7799 (RMS) noise is 27nV.The sheet internal characteristic comprises a low side power switch, reference voltage detection, programmable digital output pin, fusing current control and an internal clocking oscillator.Output data rate can, by the software programming setting, can change in the scope of 4.17Hz to 470Hz.AD7799 adopts 2.7V to 5.25V Power supply, and typical power consumption is 380 μ A, adopts 16 pin TSSOP encapsulation.
Fig. 7 has represented to carry out through the XTR101 modular converter with PT1000 the flow process of temperature signal collection.
Below principle of work and the use-pattern of described Water in oil monitor are described.
The preferred implementation of described Water in oil monitor relates generally to a kind of based on the generation of high frequency (for example 5--20M) electromagnetic wave and amplifying circuit, application high-performance arm processor gathers profit rate of change signal, has designed simultaneously temperature measuring circuit and has eliminated the adverse effect that temperature variation causes measurement result.
Cardinal principle is as follows:
, take electromagnetic wave as frequency of operation, by emitter, the electromagnetic wave signal of permanent width, frequency stabilization is transmitted in wet oil.Due to oil and the difference in dielectric constant of water larger, cause the variation of electric capacity when oil-water ratio changes, thereby can cause the variation of oscillation frequency, by the measurement oscillation frequency just can the measuring channel medium water-retention value.According to the difference of Water in oil amount, sniffer causes this that absorbing the different signal of electric energy is sent to the instrument processor because water content in crude oil is different.The standard electric signal that after treated, amplification, linearity correction, output one changes with the Water in oil amount, this signal is converted to moisture ratio.
Take 10% as spaced points, the oil-water mixture in the moisture scope of 0-100% is carried out static analysis, experimental result shows, the method for measuring crude oil water content by the method for measuring electro-magnetic wave absorption is feasible.Concrete Processing Algorithm is for example: take 10% as spaced points, the oil-water mixture in the moisture scope of 0-100% is carried out static analysis, need 11 nominal datas.11 nominal datas are arranged from small to large, at first measure pure water sampled value and pure oily sampled value, and then measure 10%, carry out sampled value every 10% and measure.Suppose that it is not in the sampled value every 10% that AD samples one, this is just to need calculating sampling at that water-bearing section, and the temperature value that coordinates sampling to obtain compensates, and just can obtain relatively accurate moisture sampled value.
Some better technological means that below to Water in oil monitor of the present utility model, can adopt are described further:
1. adopt 24 high precision to turn device AD7799, AD7799 is for being fit to low-power consumption, low noise, the complete AFE (analog front end) of high-acruracy survey application, 16/24 sigma-delta type ADC of a built-in low noise, wherein contain 3 difference analogue inputs, low noise instrument amplifier in also integrated sheet, thereby can directly input small-signal.When gain be set to 64, when renewal rate is 4.17Hz, the root mean square of AD7799 (RMS) noise is 27nV.AD7799 adopts 2.7V to 5.25V Power supply, and the typical power consumption of AD7799 is 380 μ A, and adopts 16 pin TSSOP encapsulation.
2. adopt the RS485 technology,, by the networking easily of RS485 node, realized that low cost, low power consumption, network node are many, the network of long transmission distance.
3. adopt sensor and the microprocessor chip STM32 of various low-power consumption, super low-power consumption, greatly reduce the power consumption of instrument; Adopt special power supply IC, for instrument provides stable power supply, make instrument can be continuously, for a long time, stably in work.
Based on to early stage to the research of crude oil water content, the upper computer software of Surveillance center has embedded multiple intelligent algorithm, has greatly reduced the error of data, has improved the fitting precision of data;
This Water in oil monitor can connect together with electromagnetic sensor, also can connect together with capacitive transducer, simultaneously a plurality of Instrument connections network consisting that gets up carries out RS485 communication, Surveillance center and power module, wherein: electromagnetic sensor is used for gathering the profit variable signal, with the 4-20mA current signal transfer that collects, gives this measuring instrument.Power module, be used to instrument, electromagnetic sensor and RS485 that 5V is provided, 3.3V, 12V and 24V power supply.Adopt low-power consumption high-speed computation processor STM32, coordinate high-precision AD converter, and with temperature sensor PT100 0, carry out temperature compensation, the resistance signal that measures is converted to the 4-20MA current signal, measuring accuracy is high, and when carrying out temperature compensation like this, precision is also high.
Measure example
Utilize described Water in oil monitor by after the several times shop experiment in 2011, July, in long oil extraction in oil field two factories that celebrate, carry out site test.Obtain test figure as follows:
The on-the-spot moisture test of well head data on July 19 to July 22 are as follows:
With respect to the utility model simple operation, measure advantage fast, such difference is complete acceptable.
Claims (3)
1. Water in oil monitor, it is characterized in that, comprise electromagnetic wave launcher, survey sniffer, analog to digital converter, processor and the actuation means of monitoring electromagnetic wave energy in medium, described sniffer connects described analog to digital converter, and described electromagnetic wave launcher, described analog to digital converter, described actuation means all are connected with described processor.
2. a kind of Water in oil monitor according to claim 1, is characterized in that, also comprises the power module and the display that all with described processor, are connected.
3. a kind of Water in oil monitor according to claim 1, is characterized in that, described analog to digital converter is AD7799, and described processor is STM32.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012206767511U CN203299145U (en) | 2012-12-10 | 2012-12-10 | Water-in-oil monitoring instrument |
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| CN2012206767511U CN203299145U (en) | 2012-12-10 | 2012-12-10 | Water-in-oil monitoring instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185732A (en) * | 2012-12-10 | 2013-07-03 | 北京乾达源科技有限公司 | Monitoring method and monitoring instrument for water content in oil |
| CN105203564A (en) * | 2015-10-13 | 2015-12-30 | 江苏麦赫物联网科技有限公司 | Device and method for detecting trace water in oil by using microwaves |
| CN106770379A (en) * | 2016-12-26 | 2017-05-31 | 天津睿源科特机械设备有限公司 | A kind of crude oil water containing measuring device |
| CN114486097A (en) * | 2022-04-15 | 2022-05-13 | 湖北工业大学 | Accident oil pool monitoring device and method for magnetic coupling resonance wireless power transmission efficiency |
-
2012
- 2012-12-10 CN CN2012206767511U patent/CN203299145U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185732A (en) * | 2012-12-10 | 2013-07-03 | 北京乾达源科技有限公司 | Monitoring method and monitoring instrument for water content in oil |
| CN105203564A (en) * | 2015-10-13 | 2015-12-30 | 江苏麦赫物联网科技有限公司 | Device and method for detecting trace water in oil by using microwaves |
| CN106770379A (en) * | 2016-12-26 | 2017-05-31 | 天津睿源科特机械设备有限公司 | A kind of crude oil water containing measuring device |
| CN114486097A (en) * | 2022-04-15 | 2022-05-13 | 湖北工业大学 | Accident oil pool monitoring device and method for magnetic coupling resonance wireless power transmission efficiency |
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| GR01 | Patent grant | ||
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Granted publication date: 20131120 |
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| CX01 | Expiry of patent term |