CN105195527B - A kind of oily on-line monitoring method of mill lubrication without temperature-compensating - Google Patents
A kind of oily on-line monitoring method of mill lubrication without temperature-compensating Download PDFInfo
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- CN105195527B CN105195527B CN201510663039.6A CN201510663039A CN105195527B CN 105195527 B CN105195527 B CN 105195527B CN 201510663039 A CN201510663039 A CN 201510663039A CN 105195527 B CN105195527 B CN 105195527B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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Abstract
The invention discloses a kind of oily on-line monitoring method of mill lubrication without temperature-compensating, belong to monitoring industrial equipment instrument field.The present invention step be：1) dielectric constant under tested fluid and the real time temperature for contrasting fluid, is measured in real time by capacitance sensor probe electrode using capacitive sensor signal process circuit；2), microprocessor and data display and storage device calculate the dielectric constant of the tested fluid measured in real time under real time temperature relative to contrast fluid change in dielectric constant value；3) it is incremented by successively to calculate the corresponding moisture content of two consecutive sampling times respectively according to the sampling interval, according to the sensor moisture content sensitivity coefficient demarcated in advance, and calculate change slope of the moisture content relative to the stipulated time.The present invention just can monitor the quality index such as the synthesis gross contamination degree and moisture content of tested fluid on-line without temperature and other compensation, be had a wide range of applications in terms of mechanical equipment state monitoring and fault diagnosis.
Description
Present patent application is to be directed to Application No.：2014104555305 divisional application, the applying date of original application
For：On September 9th, 2014, invention and created name is：A kind of mill lubrication online oil monitoring device and its prison without temperature-compensating
Survey method.
Technical field
The invention belongs to monitoring industrial equipment instrument field, more particularly to a kind of mill lubrication oil without temperature-compensating exists
Line monitoring method, realizes the oily moisture content of mill lubrication and oil contamination status monitoring.
Background technology
Steel mill all has substantial amounts of hydraulic system, and the pollution technology of on-line monitoring fluid is research plant equipment mill
Damage situation, carries out the important means of equipment condition monitoring and fault diagnosis.The pollution form of fluid is typically metal worn particle, oxidation
The pollution that thing, greasy filth, knot carbon, moisture, sediment, fuel oil and hydrogen, chlorine, heat, electricity, air etc. are caused.Its thing after oil contamination
Reason or chemical property can all change, according at identical temperature with trade mark fresh oil with oil dielectric constant change, just
Can synthesis measuring with oil gross contamination degree and quality, i.e. contamination level of oil liquid.
Because high-speed wire production line is with a large amount of high pressure water coolings, cooling water inevitably enters finishing mill lube system
System.This requires to enter fashionable in discovery cooling water, takes measures in time, reduce the possibility of Emulsion formation.Ma'an Mountain Ma Gang
Huayang equipment Diagnosis Engineering Co., Ltd by from wire rod fast mill lubricating system largely water inlet after lubricants performance produce
Change, lubricating oil cause the analysis of bearing failure reason to draw to draw a conclusion：The filmatic bearing used for wire rod fast mill
Oil increases the probability for making bearing produce failure when water content is more than 0.5%, if very likely existed when water content is more than 1%
Bearing failure is produced in a short time.This is accomplished by being monitored the lubrication and fuel tank of every milling train, and that is the discovery that in time
Whether milling train leak and main fuel tank moisture content transfinite, so as to on-call maintenance or replacing reserve fuel tank and unlatching fuel tank dehydration dress
Put.
Conventional at present is all the monitoring device of independent on-line monitoring lubricating oil water content or comprehensive pollution degree, and its is main
All it is to be determined using the change of oily dielectric constant.The conventional at present change based on oily dielectric constant determines lubricating oil product
Most of instrument of matter is using offline sampling monitoring.As lubricating oil fast mass detector be exactly using with trade mark fresh oil and
In the change of the dielectric constant with oil, to determine quality of lubrication oil, this offline mode is analyzed again due to needing first to sample, no
Only laborious time-consuming, cost is high, and the return of measurement result has hysteresis quality, in many application fields gradually by online real-time
Monitoring technology is substituted, and monitoring on-line more turns into the cutting edge technology of oil analysis in mechanical fault diagnosis.
Change based on oily dielectric constant is also to have report come the on-line monitoring instrument and sensor for determining lubricating oil quality more
Road and application is carried out.Dielectric constant due to fluid in changes with temperature change.And monitor on-line
Be dielectric constant under real time temperature, and the same trade mark fresh oil or the value of normal fluid that are contrasted are to mark at a certain temperature
Fixed, if contrasting both variable quantities to calculate the numerical value of same trade mark fresh oil or normal fluid under real time temperature.Often
Method is additional temperature sensor measurement real time temperature and calculates new with the trade mark according to empirical formula or given formula
The offset of oil or normal fluid in real time temperature, i.e., carry out temperature-compensating to measurement result.Due to what is industrially used
Temperature sensor has than larger error, and such as PT100 errors reach 0.5, and the temperature compensation value after so calculating will also be produced
Raw corresponding error.It is also to make according to fixed compensation formula furthermore the factor of fluid change in dielectric constant is very complicated in fact
Into certain error.It is also to have certain to monitor operating mode and environment on-line simultaneously and be tested dielectric constant for measuring circuit and fluid
Influence, it is also small to be actually based on the fluid capacitance variations that this technology of dielectric constant measurement measures in itself, and temperature is mended
The error repaid and the influence of environment industrial and mineral are very big on measurement result influence, even can change the result of measurement sometimes.
This big obstacle just applied into current obstruction on-line monitoring technique.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to provide a kind of oily on-line monitoring method of mill lubrication without temperature-compensating, using the present invention
On-Line Monitor Device, can according to same trade mark fresh oil (contrasting fluid) with normal with the real-time dielectric of oil (be tested fluid)
Several changes, without temperature and other compensation, just can be monitored on-line in matter such as the synthesis gross contamination degree and moisture content with oil
Figureofmerit, has a wide range of applications in terms of mechanical equipment state monitoring and fault diagnosis.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of mill lubrication online oil monitoring device without temperature-compensating of the present invention, including N number of lubrication monitoring modular,
Wherein N<30 and for positive integer, each lubrication monitoring modular is used to monitor a mill lubrication branch road or a fuel tank, wherein：
Lubricating monitoring modular includes capacitance sensor probe electrode, capacitive sensor signal process circuit and acquisition control transmission circuit,
Described capacitance sensor probe electrode is installed on mill lubrication branch road or fuel tank and immerses tested fluid, and the capacitance sensor is visited
Tip electrode is connected with capacitance sensor process circuit, and the output signal of capacitance sensor process circuit becomes power transmission by acquisition control
Road is transferred to microprocessor and data display and storage device, wherein：Described capacitance sensor probe electrode include external electrode,
Target and interior electrode, described dispatch from foreign news agency extremely plate-like structure, described target is the cuboid knot that front end is closed
Structure, described interior electrode is slab construction, and the external electrode is arranged on the side of target, described external electrode and target
Between form the open cavity flowed through for tested fluid, the inside of described target is that the closing placed for contrast fluid is empty
Chamber, interior electrode is arranged on the centre position of closed cavity inside target, and the side of external electrode, target and interior electrode
Wall is parallel, and external electrode and target constitute parallel planar capacitor, and target and interior electrode constitute parallel planar electric capacity
Device.
Furthermore, the oil filler point and seal plug communicated with closed cavity is provided with described target,
The oil filler point and seal plug are used to filling, change and sealing the contrast fluid in closed cavity.
Current high-speed wire mill lubricating system is to concentrate oil lubricating system, many using double fuel tank configurations, is supplied by Lubricating pump station
Oil, flows separately through after filmatic bearing of press and to flow through shared oil return pipe to fuel tank by the frame oil return pipe of milling train.This is accomplished by pair
The lubrication and fuel tank of every milling train are monitored, and are the discovery that whether that milling train leak and main fuel tank moisture content surpass in time
Limit, so as to on-call maintenance or replacing reserve fuel tank and unlatching fuel tank dehydration device.What the present invention was designed is：Single-point acquiring/single-point
Transmission/host computer centralized displaying and the scheme of control, can so realize and every milling train or single fuel tank are monitored, with
Just there is leak alarm in single monitoring unit, single lubrication monitoring modular passes through its internal acquisition control transmission circuit
RS485 communication transfers are microprocessor and data display and storage device to host computer, can be achieved the scattered monitoring of multiple spot, it is long-range,
Central controlled function.Limitation and the specific situation in workshop due to industrial computer capacity, the lubrication prison that general each workshop needs
Measuring point is also not limited to be less than 30 monitoring points not over 30.
The basic functional principle of capacitance sensor probe electrode is the change based on tested dielectric Constant in the present invention
Change can be converted into this feature of electric capacitance change.The change of fluid dielectric Constant is unable to direct measurement, therefore will
The mapping relations set up between the change of capacitance and dielectric constant.When other conditions are identical, fluid is allowed to flow through an electric capacity biography
Sensor, the fluid of different qualities as capacitor intermediate medium when the capacitance that is formed it is inevitable different, and after oil contamination
Its physically or chemically performance can all change, according at identical temperature with trade mark fresh oil (contrasting fluid) with oil (i.e.
Tested fluid) dielectric constant be capacitance change, just can synthesis measuring in the gross contamination degree and quality with oil.Due to
The dielectric constant of water is more larger than difference with oil phase, when being mixed into water in lubricating oil, and micro water will cause mixed oil liquid dielectric
The obvious change of constant.The dielectric constant of the lubricating oil mixed liquor of different water cut and straight lubrication oil is compared, then passed through
Circuit signal processing, just can obtain water content of lubricating oil rate score.
Change based on tested fluid dielectric constant can be converted into this feature of sensor capacitance change.Therefore root
Mapping relations between the capacitance and dielectric constant set up according to sensor.Sensor is obtained by capacitance sensor process circuit defeated
The electrical parameter values gone out react the change of fluid dielectric constant.This electrical parameter can be voltage, electric current or other electrical parameters
Unit.Conventional capacitance sensor process circuit is usually C/V conversion processing circuits, and the magnitude of voltage for obtaining sensor output comes anti-
Answer the change of fluid dielectric constant.It is all with tested fluid dielectric constant that the present invention proposes that capacitance sensor process circuit includes
Change caused by electric capacitance change signal after processing as sensor export electrical parameter signal circuit, be not limited to electricity
Appearance/voltage (C/V) change-over circuit.
A kind of mill lubrication without temperature-compensating of the present invention oily on-line monitoring method, the difference of moisture content and dustiness
It is to distinguish according to measuring slope that tested fluid dielectric constant numerical value changes over time under real time temperature, its step is as follows：
1), using the mill lubrication online oil monitoring device without temperature-compensating, electricity is handled using capacitive sensor signal
Road measures the dielectric constant under the real time temperature of tested fluid and contrast fluid, electric capacity by capacitance sensor probe electrode in real time
The electrical parameter signal of sensor process circuit correspondence output is transferred to microprocessor by acquisition control transmission circuit and data are aobvious
Show and storage device；
2), microprocessor and data display and storage device calculate the dielectric of the tested fluid measured in real time under real time temperature
Constant corresponds to the electrical parameter changing value of output relative to contrast fluid change in dielectric constant value；
3), according to step 1) and step 2) data that measure, according to the sensor moisture content sensitivity coefficient demarcated in advance,
It is incremented by successively to calculate the corresponding moisture content of two consecutive sampling times respectively according to the sampling interval, and calculate moisture content relative to
The change slope of stipulated time；
4), according to step 3) the change slope that calculates, make following to judge；
4.1) moisture content, is calculated caused by change in dielectric constant for the change slope of stipulated time with the sampling time time
Several increases, slope has continuous obvious increase or occurs slope abrupt change, can determine whether as fluid water-cut variation, equipment appearance
Water leakage fault；
4.2) moisture content, is calculated caused by change in dielectric constant for the change slope of stipulated time with the sampling time time
Several increases, slope can determine whether the dustiness degree for fluid without continuous obvious increase.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, with following remarkable result：
(1) in the present invention, the tested fluid of its capacitance sensor probe electrode immersion, sensor process circuit is passed by electric capacity
Dielectric constant under tested fluid and contrast fluid real time temperature that sensor probe electrode is measured passes through acquisition control transmission circuit
Microprocessor and data display and storage device are transferred to, therefore, the difference of mill lubrication oil moisture content and dustiness can be according to
Slope that the tested fluid dielectric constant numerical value measured at a temperature of when factually is changed over time is distinguished.
(2) open cavity flowed through for tested fluid, middle electricity are formed in the present invention, between its external electrode and target
The inside of pole is the closed cavity placed for contrast fluid, and external electrode and target constitute parallel planar capacitor, middle electricity
Pole and interior electrode constitute parallel planar capacitor so that reality of the present invention according to contrast fluid and tested fluid when mutually synthermal
When change in dielectric constant, without temperature and other compensate, just can monitor the synthesis gross contamination degree of tested fluid on-line and contain
The quality index such as water rate, have a wide range of applications in terms of mechanical equipment state monitoring and fault diagnosis.
Brief description of the drawings
Fig. 1 is a kind of composition frame chart of mill lubrication online oil monitoring device without temperature-compensating of the present invention；
Fig. 2 is the schematic diagram of capacitance sensor probe electrode in the present invention；
Fig. 3 is the lateral cross section structural representation of capacitance sensor probe electrode in the present invention.
Label declaration in schematic diagram：
1-N(N<30) monitoring modular is lubricated；30th, capacitance sensor probe electrode；31st, capacitance sensor process circuit；32、
Acquisition control transmission circuit；33rd, external electrode；34th, target；35th, interior electrode；36th, open cavity；37th, closed cavity；38、
Oil filler point and seal plug；40th, microprocessor and data display and storage device.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments, but does not limit
The present invention.
Embodiment 1
With reference to Fig. 1, the present embodiment is with the scattered long-range monitoring of multiple spot and central controlled example, one point of steel mill inside
There are multiple lubrication units for needing to monitor in factory, by taking milling train workshop as an example, because job requirement must be to each milling train and oil
Case is monitored.A kind of mill lubrication online oil monitoring device without temperature-compensating of the present embodiment, including fuel tank and
Mill lubrication pipeline one has 12 lubrication monitoring points.Label 1,2,3,4, N are each meant in the N=12 for the present embodiment, Fig. 1
Monitoring modular is lubricated, therefore just has 12 lubrication monitoring module monitors mill lubrication branch roads and fuel tank, wherein：Each lubrication monitoring
The monitoring modular of point includes capacitance sensor probe electrode 30, capacitance sensor process circuit 31 and acquisition control transmission circuit
32, described capacitance sensor probe electrode 30 is installed in mill lubrication branch road or fuel tank and immerses tested fluid, the electricity
Hold sensor probe electrode 30 with capacitance sensor process circuit 31 to be connected, capacitance sensor process circuit 31 passes through capacitance sensing
The tested fluid dielectric constant that device probe electrode 30 is measured is transferred to microprocessor and data by acquisition control transmission circuit 32
Display and storage device 40 are calculated, shown and stored.It can so realize and every milling train or fuel tank are monitored, collected
Middle display, remote control, transfinite alarm to occur leak either fuel tank moisture content in single lubrication monitoring point.
As shown in Figures 2 and 3, the capacitance sensor probe electrode 30 in the present embodiment includes external electrode 33, target
34 and interior electrode 35, described external electrode 33 is plate-like structure, and described target 34 is the cuboid knot that front end is closed
Structure, described interior electrode 35 is slab construction, and the external electrode 33 is arranged on the side of target 34, described external electrode 33 with
The open cavity 36 flowed through for tested fluid is formed between target 34, the inside of described target 34 is for contrast oil
The closed cavity 37 that liquid is placed, interior electrode 35 is arranged on the centre position of the inside closed cavity 37 of target 34, and external electrode
33rd, the side wall of target 34 and interior electrode 35 is parallel, and external electrode 33 and target 34 constitute parallel planar capacitor,
Target 34 and interior electrode 35 constitute parallel planar capacitor.It is provided with target 34 in the present embodiment empty with closing
Oil filler point and seal plug 38 that chamber 37 is communicated, the oil filler point and seal plug 38 are used to filling, change and sealing closed cavity
Contrast fluid in 37 (i.e. with trade mark fresh oil or Comparison of standards liquid).
Using dielectric constant measurement water content of lubricating oil, the dielectric constant about 80 or so of pure water is mainly used, it is general pure
The dielectric constant of oil is 2 or so, and both distinguish very big, therefore after water is mixed into oil, can make the dielectric constant of oil has larger
Change, especially because dielectric constant oily caused by equipment leak can drastically quick increase in a short time.
Using dielectric constant measurement lubricant pollution degree, fluid is mainly used in greasing, the metal worn particle of abrasion,
The pollution that oxide, greasy filth, knot carbon, sediment, fuel oil and hydrogen, chlorine, heat, electricity, air etc. are caused.Dielectric is normal after oil contamination
Number can change, just can synthesis measuring with oil gross contamination degree and quality be contamination level of oil liquid.Draw with equipment leak
Unlike the dielectric constant increase risen, the change of this dielectric constant is slowly varying with the lubrication degradation failure of fluid
, and variable quantity is smaller.
The present invention proposes capacitance sensor process circuit including all to be tested caused by the change of fluid dielectric constant
The signal of electric capacitance change exports the circuit of electrical parameter signal after processing as sensor, is not limited to electric capacity/voltage (C/V)
Change-over circuit.Because being universal circuit, just it is not added with detailing here.
A kind of area of the oily on-line monitoring method of the mill lubrication without temperature-compensating of the present embodiment, moisture content and dustiness
It is not to distinguish according to measuring slope that tested fluid dielectric constant numerical value changes over time under real time temperature, with conventional
Exemplified by capacitance sensor electric capacity/voltage (C/V) conversion processing circuit, its step is as follows：
1), using the mill lubrication online oil monitoring device without temperature-compensating of the present embodiment, capacitance sensor is utilized
Signal processing circuit 31 is measured under the real time temperature of tested fluid and contrast fluid in real time by capacitance sensor probe electrode 30
Dielectric constant, capacitance sensor process circuit 31 correspondence output voltage signal be transferred to by acquisition control transmission circuit 32
Microprocessor and data display and storage device 40；
2), microprocessor and data display and storage device 40 calculate Jie of the tested fluid measured in real time under real time temperature
Electric constant corresponds to the voltage change of output relative to contrast fluid change in dielectric constant value；
3), according to step 1) and step 2) data that measure, according to the sensor moisture content sensitivity coefficient demarcated in advance,
It is incremented by successively to calculate the corresponding moisture content of two consecutive sampling times respectively according to the sampling interval, and calculate moisture content relative to
The change slope of stipulated time；
On the demarcation of moisture content, by taking conventional capacitance sensor electric capacity/voltage (C/V) conversion processing circuit as an example, pass
The value of the dielectric constant of the tested fluid of magnitude of voltage correspondence of sensor output.Therefore the change of sensor output voltage with regard to exterior syndrome oil
The change of liquid dielectric constant.
In temperature T, (moisture content 0-5%) uses the analysis method of piecewise linearity in the moisture content monitoring of lubricating oil,
The output voltage of capacitance sensor and the relation of lubricating oil water content meet following linear relationship equation.
Vt=Vot+Kh
Then：
Wherein：Δ V=Vt-Vot；
Vt- in temperature T, output voltage (unit V) of the sensor in tested fluid；
Vot- in temperature T, output voltage (unit V) of the sensor in contrast fluid；
Δ V-correspond to tested fluid and contrast the sensor output voltage changing value of fluid change in dielectric constant；
The moisture content of h-tested fluid, %；
K- sensor moisture content sensitivity coefficients.
Sensor is measured in temperature T according to above calibration equation, oil sample of the sensor in identical trade mark different water cut
In reading sensor moisture content sensitivity coefficient K can be obtained according to above equation.According to sensor moisture content sensitivity system
Number, and according to the tested fluid measured in real time under real time temperature dielectric constant relative to contrast fluid change in dielectric constant value
(voltage change of correspondence output), you can calculate corresponding moisture content.
4), according to step 3) the change slope that calculates, make following to judge；
4.1) moisture content, is calculated caused by change in dielectric constant for the change slope of stipulated time with the sampling time time
Several increases, slope has continuous obvious increase or occurs slope abrupt change in the short time, can determine whether as fluid water-cut variation,
Equipment occurs in that water leakage fault；
4.2) moisture content, is calculated caused by change in dielectric constant for the change slope of stipulated time with the sampling time time
Several increases, slope can determine whether the dustiness degree for fluid without continuous obvious increase in the short time.
For mill lubrication, sampling time general provision is 30 seconds, and the stipulated time can be that the sampling time can also
It it is the sampling time of multiple, in general, the moisture content number calculated in the continuous 3-5 stipulated time changes hn+1-hn＞ 0.3%
Being considered as moisture content, slope has continuous obvious increase or occurs slope abrupt change, wherein h in a short timen+1Refer to the N+1 times inspection
The moisture content for the tested fluid surveyed, hnRefer to the moisture content of the tested fluid of n-th detection.In actual applications, it is not limited to
Data above, can make change according to different application places and different plant maintenance technological requirements.
A kind of mill lubrication online oil monitoring device and its monitoring method without temperature-compensating of the present embodiment, can be used for
In situ quantitation analyzes oil quality state, and equipment fault early-warning is provided in time, optimizes the drain period, reduces downtime, extension
Service life of equipment.In some application fields, this monitoring device can as the case may be, separately as measurement contamination level of oil liquid or
The instrument of fluid moisture content is used.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (3)
1. a kind of oily on-line monitoring method of mill lubrication without temperature-compensating, it is characterised in that the area of moisture content and dustiness
It is not to distinguish according to measuring slope that tested fluid dielectric constant numerical value changes over time under real time temperature, its step is such as
Under：
1) it is logical using capacitance sensor process circuit (31), using the mill lubrication online oil monitoring device without temperature-compensating
Cross capacitance sensor probe electrode (30) and measure tested fluid and the dielectric constant under the real time temperature of contrast fluid, electric capacity in real time
The electrical parameter signal of sensor process circuit (31) correspondence output is transferred to microprocessor by acquisition control transmission circuit (32)
And data display and storage device (40)；
2), microprocessor and data display and storage device (40) calculate the dielectric of the tested fluid measured in real time under real time temperature
Constant corresponds to the electrical parameter changing value of output relative to contrast fluid change in dielectric constant value；
3), according to step 1) and step 2) data that measure, according to the sensor moisture content sensitivity coefficient demarcated in advance, according to
It is sampling interval, incremented by successively to calculate the corresponding moisture content of two consecutive sampling times respectively, and moisture content is calculated relative to regulation
The change slope of time；
4), according to step 3) the change slope that calculates, make following to judge；
4.1) change slope of the moisture content for the stipulated time, is calculated caused by change in dielectric constant with sampling time number of times
Increase, slope has continuous obvious increase or occurs slope abrupt change, can determine whether as fluid water-cut variation, and equipment is occurred in that Lou
Water failure；
4.2) change slope of the moisture content for the stipulated time, is calculated caused by change in dielectric constant with sampling time number of times
Increase, slope can determine whether the dustiness degree of fluid without continuous obvious increase.
2. a kind of oily on-line monitoring method of mill lubrication without temperature-compensating according to claim 1, it is characterised in that
Mill lubrication online oil monitoring device without temperature-compensating includes N number of lubrication monitoring modular, wherein N<30 and for positive integer, often
One lubrication monitoring modular is used to monitor a mill lubrication branch road or a fuel tank, wherein：Lubricating monitoring modular includes electric capacity
Sensor probe electrode (30), capacitance sensor process circuit (31) and acquisition control transmission circuit (32), described electric capacity are passed
Sensor probe electrode (30) is installed on mill lubrication branch road or fuel tank and immerses tested fluid, the capacitance sensor probe electrode
(30) it is connected with capacitance sensor process circuit (31), the output signal of capacitance sensor process circuit (31) passes through acquisition control
Transmission circuit (32) is transferred to microprocessor and data display and storage device (40), wherein：
Described capacitance sensor probe electrode (30) includes external electrode (33), target (34) and interior electrode (35), described
External electrode (33) be plate-like structure, described target (34) is the cuboid structure that front end is closed, described interior electricity
Pole (35) is slab construction, and the external electrode (33) is arranged on the side of target (34), described external electrode (33) and centre
The open cavity (36) flowed through for tested fluid is formed between electrode (34), the inside of described target (34) is for contrasting
The closed cavity (37) that fluid is placed, interior electrode (35) is arranged on the interposition of the internal closed cavity (37) of target (34)
Put, and the side wall of external electrode (33), target (34) and interior electrode (35) is parallel, external electrode (33) and target
(34) parallel planar capacitor is constituted, target (34) and interior electrode (35) constitute parallel planar capacitor.
3. a kind of oily on-line monitoring method of mill lubrication without temperature-compensating according to claim 2, it is characterised in that
The oil filler point communicated with closed cavity (37) and seal plug (38), the oil filler point and seal plug are provided with target (34)
Head (38) is used to filling, change and sealing the contrast fluid in closed cavity (37).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510663039.6A CN105195527B (en) | 2014-09-09 | 2014-09-09 | A kind of oily on-line monitoring method of mill lubrication without temperature-compensating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455530.5A CN104209346B (en) | 2014-09-09 | 2014-09-09 | A kind of mill lubrication online oil monitoring device without the need to temperature compensation and monitoring method thereof |
| CN201510663039.6A CN105195527B (en) | 2014-09-09 | 2014-09-09 | A kind of oily on-line monitoring method of mill lubrication without temperature-compensating |
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| CN201410455530.5A Division CN104209346B (en) | 2014-09-09 | 2014-09-09 | A kind of mill lubrication online oil monitoring device without the need to temperature compensation and monitoring method thereof |
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| CN201510663039.6A Active CN105195527B (en) | 2014-09-09 | 2014-09-09 | A kind of oily on-line monitoring method of mill lubrication without temperature-compensating |
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| CN105251784B (en) * | 2014-09-09 | 2017-04-26 | 马鞍山马钢华阳设备诊断工程有限公司 | Online monitoring method for water content and pollution degree of lubricating oil of rolling mill |
| DE102016102931B4 (en) * | 2016-02-19 | 2018-09-20 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Device and method for monitoring and / or regulating a state of lubrication in a continuously operating press |
| GB2559791B (en) * | 2017-02-20 | 2021-10-20 | Skf Ab | A method and system of condition monitoring |
| WO2020126036A1 (en) * | 2018-12-21 | 2020-06-25 | Essity Hygiene And Health Aktiebolag | Detecting a filling status of a dispenser for a consumable |
| CN109821898B (en) * | 2019-02-13 | 2020-07-28 | 江苏恒丰新材料制造有限公司 | Method for realizing low energy consumption and low oil mist emission in cold continuous rolling process |
| CN113176306B (en) * | 2021-04-25 | 2023-09-12 | 西安石油大学 | Device and method for calculating oil-water ratio in tank body |
| CN113514509A (en) * | 2021-04-26 | 2021-10-19 | 沈阳大工先进技术发展有限公司 | Online oil pollution degree monitoring system based on dielectric constant measurement |
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| FI110287B (en) * | 1999-06-17 | 2002-12-31 | Vaisala Oyj | Method and apparatus for measuring the water content of a liquid |
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| CN204035195U (en) * | 2014-09-09 | 2014-12-24 | 马鞍山马钢华阳设备诊断工程有限公司 | A kind of mill lubrication online oil monitoring device without the need to temperature-compensating |
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2014
- 2014-09-09 CN CN201410455530.5A patent/CN104209346B/en active Active
- 2014-09-09 CN CN201510663039.6A patent/CN105195527B/en active Active
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| CN105195527A (en) | 2015-12-30 |
| CN104209346B (en) | 2016-04-13 |
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