CN102608194B - Online detecting device for active sulfur in liquid oil - Google Patents
Online detecting device for active sulfur in liquid oil Download PDFInfo
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- CN102608194B CN102608194B CN201210043579.0A CN201210043579A CN102608194B CN 102608194 B CN102608194 B CN 102608194B CN 201210043579 A CN201210043579 A CN 201210043579A CN 102608194 B CN102608194 B CN 102608194B
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Abstract
The invention relates to an online detecting device for active sulfur in liquid oil. The device comprises a detecting module and a processor module, wherein the detecting module is connected with device oil tanks such as a transformer oil tank, a generator oil tank, an engine oil tank or a speed changing device oil tank and the like, and is used for detecting active sulfur in liquid oil of devices, and the processor module is used for receiving and processing detecting signals output by the detecting module, and controlling the running of the detecting module. According to the online detecting device disclosed by the invention, the online in-time detection on the active sulfur in the liquid oil of the devices can be realized, so that scientific and effective advices can be provided for chances of changing the liquid oil of the devices; and high-pressure device faults caused by the active sulfur contained in the liquid oil of the device or device faults caused by the active sulfur contained in the liquid oil of the device can be reduced, so that the phenomenon of reducing the service life can be reduced.
Description
Technical field
The present invention relates to sensor detection field, be specifically related to the on-line measuring device of active sulfur in a kind of liquid oils.
Background technology
The liquid oils of using in power industry mostly at present is the mineral oil that oil (crude oil) forms through refining refinement, in its constituent except nytron beyond the region of objective existences such as a large amount of alkane, naphthenic hydrocarbon and a small amount of aromatic hydrocarbon, simultaneously also with trace elements such as sulphur intrinsic in crude oil, oxygen, nitrogen, wherein " active sulfur " is a part for total sulfur composition in oil, and may contain multiple active sulfur. comprising element sulphur, mercaptan (THIOLS), thioether (THIO-ETHERS), 2 sulfide (DISULFIDES).
Nineteen ninety for mid-term before, the damage comparison of the transformer causing due to active sulfur in world wide is few, but in recent years, because reacting generation cuprous sulfide with copper winding, the active sulfur in transformer oil cause a lot of high-tension apparatuses to break down, according to statistics, since 2000, existing nearly hundred large-scale power transformers (or reactor) break down because of the active sulfur problem in transformer oil both at home and abroad; The result that CHINA SOUTHERN POWER company generally investigated with oil the in-service 500kV transformer of whole south electric network (reactor) in 2007 shows, approximately there is 14.4% equipment to contain active sulfur with oil, only within 2005, just have 5 110 kV transformers therefore to break down.And above problem is all to be caused by underlying cause:
1, the means of refining and purifying petroleum have had variation;
2, there has been variation in the supplier of transformer insulation oil, and old manufacturer is left, and new manufacturer enters;
3, there have been great changes in the source of oil, and new oil source comprises different various sulphur and sulfide;
4, modern transformer be designed with variation, the insulating oil quantity of novel transformer declines to some extent with respect to the tenor in transformer;
5, the working temperature of modern transformer increases than in the past, and high temperature can cause the sulfide of originally thinking stable to become unsettled corrosive sulfide that has; High temperature simultaneously can accelerated oxidation reaction velocity, and metal sulfide is more easily generated, and is dissolved in insulating oil, is attached to the surface of copper and insulating paper, thereby causes the accident of transformer.
The equipment failure problem causing for containing " active sulfur " in above liquid oils, how tackling this problem has become one of focus that current power department mainly pays close attention to.And the method for existing detection active sulfur is to use in laboratory, such as Unite States Standard (USS) ASTM D1275, its basic skills is: the polishing copper sheet that first obtains oil sample and experiment use, then copper sheet is placed on and in oil sample, is heated to 140 degree, continue about 19 hours, color by observing copper sheet to be to judge in oil sample whether contain active sulfur, if copper sheet is crocus, redness, light blue, silver color etc., illustrates in oil sample containing active sulfur; But if the color of copper sheet is the phenomenon that there is caking on black, black gray expandable, dark-brown or surface, represent to contain in oil sample active sulfur.The method judges that by observing the change color on copper sheet surface oil sample is by the degree of sulfur corrosion; In transformer oil, to benzyl disulfide (DBDS), reacting in oil has no significant effect oxygen concentration with copper conductor, but can affect cuprous sulfide (Cu
2s) at the surperficial adhesion condition such as copper cash, insulating paper; Cu
2after S adheres to, can change the surface structure of copper cash, the fiber of insulating paper distributes, and cause degradation under oil-paper compound inslation dielectric properties.Although the method can provide effective laboratory detection means, owing to can not carrying out real time on-line monitoring, therefore make the security of operation of transformer, gen-set can not get ensureing.
Summary of the invention
Technical matters to be solved by this invention is to provide the on-line measuring device of active sulfur in a kind of liquid oils, to realize, the online of active sulfur in transformer oil and generating machine oil detected in real time, thereby propose scientific and effective suggestion the opportunity of transformer oil and generating machine oil to changing.
The present invention is in order to solve the problems of the technologies described above, the on-line measuring device of active sulfur in a kind of liquid oils is disclosed, described liquid oils is that equipment liquid oils is as transformer insulation oil, generator lubricating oil, engine oil, transmission oil or hydraulic oil, wherein, described device comprise be connected with equipment fuel tank for detection module that equipment liquid oils active sulfur is detected, for receiving and process the detection signal of described detection module output and controlling the processor module of described detection module operation.
Further, described detection module comprise be connected with equipment fuel tank for hold oil to be detected detection fuel tank, be arranged at detect fuel tank internal to oil active sulfur to be detected carry out direct-detection first sensor and with the corresponding setting of first sensor for receiving the second sensor of the intensity of reflected light of first sensor.
Further, described first sensor is comprised of a plurality of electrodes and rotary part, does not connect each other and be fixed on rotary part between described each electrode.
Further, two electrodes in described a plurality of electrode form the bulk resistor circuit of oil to be detected, an electrode for oil active sulfur to be detected is carried out to direct-detection.
Further, described for the electrode that oil active sulfur to be detected is carried out to direct-detection, be corroded after, by rotary part, regulate the position of electrode, adopt active sulfur in new electrode pair oil to be detected to carry out direct-detection.
Further, described electrode is that metal material, alloy material, stupalith, semiconductor material, compound substance, inorganic or organic material are made.
Further, described metal material is copper or silver material.
Further, described detection module also comprises heater circuit, and described heater circuit is used to the electrode that active sulfur in oil to be detected is carried out to direct-detection to heat.
Further, the heating-up temperature of described heater circuit is 80 ℃～250 ℃.
Further, described the second sensor is light color sensor, what described light color sensor detected is the color of heated electrode on described first sensor, by comparing the light of different wave length, obtains being heated the color of electrode from being heated the intensity of reflected light of electrode.
Further, described the second sensor is light intensity sensor, and what described light intensity sensor detected is the light intensity that on described first sensor, heated electrode reflects.
Further, described detection fuel tank is connected with oil tank of transformer or generator oil tank by oil guide pipe.
Further, described processor module is CPU, FPGA, DSP, ARM or ASIC.
Adopt the beneficial effect of the invention described above technical scheme to be: by pick-up unit provided by the invention, can realize the online of active sulfur in transformer oil and generating machine oil detected in real time, thereby to changing, propose scientific and effective suggestion the opportunity of transformer oil and generating machine oil, reduced because containing the high-tension apparatus fault that active sulfur causes or the life-span causing because of generator/breakdown in the motor in transformer oil and generator/engine oil and reduced.
Accompanying drawing explanation
Fig. 1 is the building-block of logic of pick-up unit in the embodiment of the present invention;
Fig. 2 is the cut-away view of detection module in the embodiment of the present invention;
Fig. 3 is the building-block of logic of first sensor in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
One embodiment of the invention provides the on-line measuring device of active sulfur in a kind of liquid oils, as shown in Figure 1: described device comprise be connected with equipment fuel tank for detection module 101 that equipment liquid oils active sulfur is detected, for receiving and process the detection signal of described detection module 101 outputs and controlling the processor module 102 of described detection module 101 operations.Wherein, described liquid oils is that equipment liquid oils is as transformer insulation oil, generator lubricating oil, engine oil, transmission oil or hydraulic pressure wet goods; Described equipment fuel tank is oil tank of transformer, generator oil tank, engine oil tank, variator fuel tank etc.
In embodiments of the present invention, Fig. 2 is the cut-away view of detection module in the embodiment of the present invention, as shown in Figure 2, described detection module 101 comprise be connected with equipment fuel tank for hold oil to be detected detection fuel tank 201, be arranged at detect fuel tank 201 inside to oil active sulfur to be detected carry out direct-detection first sensor 202 and with the corresponding setting of first sensor 202 for receiving the second sensor 203 of the intensity of reflected light of first sensor 202.Wherein, described detection fuel tank is connected with oil tank of transformer or generator oil tank by oil guide pipe 204.
Fig. 3 is the building-block of logic of first sensor in the embodiment of the present invention, as shown in Figure 3, described first sensor 202 is comprised of a plurality of electrodes 301 and rotary part 302, does not connect each other, and be fixed on rotary part 302 on described first sensor 202 between each electrode 301.Wherein, by two electrodes 301 form the bulk resistor circuit of oil to be detected, by an electrode 301 for oil active sulfur to be detected is carried out to direct-detection.Therefore, in embodiments of the present invention, 3 electrodes 301 at least to be set on described first sensor 202.But in actual applications; owing to active sulfur in oil to be detected being carried out to being easily the corroded property sulfur corrosion of electrode of direct-detection; therefore; in order to strengthen the life-span of first sensor 202; conventionally can arrange 3 above electrodes as 4,5 ... 8 or more; after the electrode detecting is corroded, can rotate first sensor by rotary part, by the new electrode that on first sensor, other are not corroded for carrying out the detection of active sulfur.In this embodiment, described electrode can adopt metal material, alloy material, stupalith, semiconductor material, compound substance, inorganic or organic material to make; For example, in the present embodiment, can adopt copper or silver metal material to make the electrode of first sensor.
In embodiments of the present invention, described the second sensor adopts light color sensor, what described light color sensor detected is the color of heated electrode on described first sensor, by comparing the light of different wave length, obtains being heated the color of electrode from being heated the intensity of reflected light of electrode.The content of active sulfur in being heated the color change reactions oil of electrode, for example, when electrode adopts silver material, if in oil during non-corrosiveness sulphur, silver electrode can not produce obvious variable color, or at thermodynamic activity, faint golden yellow appears in silver electrode; And while being corrosive sulphur in oil, silver electrode generation metachromasia, from light grey or brown Dark grey or the black of becoming.When adopting copper material as electrode, if in oil during non-corrosiveness sulphur, that copper electrode presents is orange, red, lavender, blueness or silver color are covered in mauve broken colour, brass or gold, carmetta all over being overlying on brass, showing the broken colour of redness and green (green rust) but there is no grey; And while being corrosive sulphur in oil, copper electrode presents black or the pitch-dark look of transparent black, black gray expandable or dark brown, graphite look or lacklustre black, light.
Certainly, except above-mentioned embodiment, described the second sensor can also adopt light intensity sensor, what described light intensity sensor detected is the light intensity that on described first sensor, heated electrode reflects, wherein, described light intensity sensor is not distinguished the light intensity of different wave length.When in to oil to be detected, active sulfur detects, setting corresponding to first sensor for receiving the intensity of reflected light of first sensor, the concentration of active sulfur in the rate determination oil changing by intensity of reflected light.In the present embodiment, described arrange corresponding with first sensor refers on first sensor that the electrode that active sulfur in oil to be detected is carried out to direct-detection is arranged on the top of optical sensor, light intensity sensor transmitting light beam, and the light intensity that is reflected back by electrode of receiving beam, when intensity of reflected light drops to certain value, illustrate that the concentration of active sulfur in oil has reached the stage that oil require is processed or changed; When reflected light drops to oil require processing, first sensor need to rotate a new electrode to the top of light intensity sensor, and after the electrode more renewing, light intensity sensor will be initialised.
In embodiments of the present invention, described detection module also comprises heater circuit 205, and described heater circuit 205 is used to the electrode that active sulfur in oil to be detected is carried out to direct-detection to heat.When a new electrode forwards optical sensor top to, this electrode can automatically be connected heater circuit and heat, in this embodiment, the heating-up temperature of described heater circuit is 80 ℃～250 ℃, and the heated temperature of electrode can be 90 ℃ ± 2 ℃, 140 ℃ ± 2 ℃, 150 ℃ ± 2 ℃, 160 ℃ ± 2 ℃, 170 ℃ ± 2 ℃, 180 ℃ ± 2 ℃, 190 ℃ ± 2 ℃, 200 ℃ ± 2 ℃ or 240 ℃ ± 2 ℃ etc.
In the above-described embodiments, when being corrosive sulfur corrosion electrode, the rate of change of the light intensity causing is therefrom relevant with the concentration of active sulfur by the temperature of electrode.If fixing wherein 2 parameters, temperature and time, just can obtain the concentration of active sulfur.Therefore the existence that pick-up unit of the present invention can qualitatively record active sulfur, also can quantitatively measure the concentration of active sulfur.When using pick-up unit of the present invention, first the factor that affects below intensity of reflected light variation is fixed, thereby obtain an initial value, be set as 100%, continue observation light intensity, at a certain temperature, in certain hour, when light intensity drops to, for example during 30% initial light intensity, system starts to give the alarm; When initial light intensity drops to, for example, 5% time, discarded this electrode is (while generally declining so far, should change oil, filter, purification or disacidify process, also likely now transformer has caused damage), therefore, maintenance personal by site disposal after, rotate another electrode to the top of optical sensor simultaneously, reinitialize the catoptrical intensity from second electrode, and to be set be 100%.In embodiments of the present invention, the color of electrode surface is relevant with active sulfur, as more in the active sulfur in oil, and the color of electrode is more black, and intensity of reflected light is less; The smoothness of electrode surface is relevant with active sulfur, and the smooth finish of initial light intensity and initial electrode is relevant, and the variation of light intensity is relevant with the situation of being corroded property of electrode surface sulphur corrosion, and active sulfur is more, and electrode surface is more rough, and intensity of reflected light is less.
The described factor that affects intensity of reflected light variation comprises:
1, optical sensor is to the distance of electrode, and distance is far away, and the intensity of reflected light receiving is less;
2, the depth of parallelism of the size of electrode, electrode and optical sensor; Electrode is larger, and the depth of parallelism is better, and intensity of reflected light is larger;
3, the luminous intensity of optical sensor luminotron, wavelength, Wavelength distribution; Luminous intensity is larger, and intensity of reflected light is larger; Wavelength distribution is loose all the more, intensity of reflected light less (condition is when one timing of light receiving tube characteristic);
4, the clever lightness of optical sensor receiving tube, sensitive wave length distribute, and photaesthesia receiver wavelength and luminotron be coupling more, and signal intensity is higher;
5, the kind of oil, the proportioning of different oil components, well cuts content is as water, acid, granularity, bubble etc., and the color of oil is more clear, and impurity is fewer, and intensity of reflected light is larger.
In embodiments of the present invention, described processor module 102 can adopt CPU, FPGA, DSP, ARM, ASIC, or other microprocessor chips with identical function realize, and can select to design according to the concrete condition of practical application, does not repeat herein.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. the on-line measuring device of active sulfur in a liquid oils, described liquid oils is equipment liquid oils, comprise transformer insulation oil, generator lubricating oil, engine oil, transmission oil or hydraulic oil, it is characterized in that, described device comprise be connected with equipment fuel tank for detection module that equipment liquid oils active sulfur is detected, for receiving and process the detection signal of described detection module output and controlling the processor module of described detection module operation;
Described detection module comprise be connected with equipment fuel tank for hold oil to be detected detection fuel tank, be arranged at detect fuel tank internal to oil active sulfur to be detected carry out direct-detection first sensor and with the corresponding setting of first sensor for receiving the second sensor of the intensity of reflected light of first sensor.
2. pick-up unit according to claim 1, is characterized in that, described first sensor is comprised of a plurality of electrodes and rotary part, does not connect each other and be fixed on rotary part between described each electrode.
3. pick-up unit according to claim 2, is characterized in that, two electrodes in described a plurality of electrodes form the bulk resistor circuit of oil to be detected, an electrode for oil active sulfur to be detected is carried out to direct-detection.
4. pick-up unit according to claim 3, it is characterized in that, described for the electrode that oil active sulfur to be detected is carried out to direct-detection, be corroded after, by rotary part, regulate the position of electrode, adopt active sulfur in new electrode pair oil to be detected to carry out direct-detection.
5. according to the pick-up unit described in claim 2 to 4 any one, it is characterized in that, described electrode is that copper or silver material is made.
6. pick-up unit according to claim 4, is characterized in that, described detection module also comprises heater circuit, and described heater circuit is used to the electrode that active sulfur in oil to be detected is carried out to direct-detection to heat.
7. pick-up unit according to claim 6, is characterized in that, the heating-up temperature of described heater circuit is 80 ℃～250 ℃.
8. pick-up unit according to claim 7, it is characterized in that, described the second sensor is light color sensor, what described light color sensor detected is the color of heated electrode on described first sensor, by comparing the light of different wave length, obtains being heated the color of electrode from being heated the intensity of reflected light of electrode.
9. pick-up unit according to claim 8, is characterized in that, described the second sensor is light intensity sensor, and what described light intensity sensor detected is the light intensity that on described first sensor, heated electrode reflects.
10. pick-up unit according to claim 1, is characterized in that, described detection fuel tank is connected with oil tank of transformer or generator oil tank by oil guide pipe.
11. pick-up units according to claim 1, is characterized in that, described processor module is CPU, FPGA, DSP, ARM or ASIC.
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| JP6468784B2 (en) * | 2014-10-07 | 2019-02-13 | 愛三工業株式会社 | Fuel property sensor |
| CN105606696A (en) * | 2015-12-17 | 2016-05-25 | 北京至感传感器技术研究院有限公司 | Oil liquid quality parameter detection method, sensor and on-line detection device |
| CN108693223A (en) * | 2017-04-06 | 2018-10-23 | 北京至感传感器技术研究院有限公司 | The on-line monitoring method and system of active sulfur in liquid oil |
| CN108802341A (en) * | 2017-05-03 | 2018-11-13 | 北京至感传感器技术研究院有限公司 | The on-line monitoring system of active sulfur in liquid oil |
| CN108535328A (en) * | 2018-03-12 | 2018-09-14 | 重庆大学 | Insulating oil sulfur corrosion quantitative testing device based on balanced bridge and method |
| CN109827898B (en) * | 2019-03-29 | 2021-09-17 | 河海大学 | Metal corrosion test device |
| TWI782577B (en) * | 2021-06-11 | 2022-11-01 | 簡芊羽 | The electrical signal measuring device inside the fuel tank to determine the metal impurity content in the fuel tank |
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