CN204832092U - A on line measurement changer for measuring water activity in oil - Google Patents
A on line measurement changer for measuring water activity in oil Download PDFInfo
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- CN204832092U CN204832092U CN201520600726.9U CN201520600726U CN204832092U CN 204832092 U CN204832092 U CN 204832092U CN 201520600726 U CN201520600726 U CN 201520600726U CN 204832092 U CN204832092 U CN 204832092U
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Abstract
The utility model provides an on line measurement changer for measuring water activity in oil, including water activity detecting element, signal acquisition module, signal processing module and the communication module who connects gradually, water activity detecting element is arranged in measuring the water activity of oil, the signal acquisition module is used for gathering the water activity signal that the measurement of water activity detecting element was arrived, and will water activity signal transfer gives signal processing module, signal processing module is right the water activity signal is handled and is obtained the testing result to pass through the testing result communication module outwards exports. The utility model discloses can realize the real -time seizure of the data under the oil normal operating state, on line measurement compares with the laboratory off -line analysis promptly, and data are more accurate reliable, water activity in the real -time supervision oil, the accurate oil pollution degree that holds stops the incident, increases the investment return, change the oil by quality has been realized, economic environmental protection.
Description
Technical field
The utility model relates to technical field of water detection, especially relates to a kind of on-line measurement transmitter for measuring water activity in oil product.
Background technology
Lubricating oil, all kinds of oil product of insulation wet goods obtain widespread use in national product process, and water content in oil is the second largest key element of oil contamination.Once Moisture high UCL in oil product, can produce much harm for oil-using units, as oil property declines, wearing and tearing aggravation, even causes the full industrial accidents such as equipment failure.Therefore, moisture in monitoring oil product is needed constantly, the safe operation of guarantee equipment.
In current oil product applying unit monitoring oil product, the method for moisture is as follows: regularly sample to fluid, then adopts karl Fischer titrimetry sample to be carried out to the moisture (i.e. ppm value) of off-line analysis fluid in laboratory.This monitoring method has following defect:
(1) there is chemical reagent, smell is smelly, seriously polluted;
(2) do not possess the ability of monitoring in real time, can only change oil on schedule, cause oil product to waste;
(3) oil product field working conditions is different from laboratory operating mode, and the measurement divided for dissolved water in fuel can cause error, truly can not reflect the actual moisture situation of oil product;
(4) due to the human error of operating personnel, user also may be caused for the erroneous judgement of water-in-oil.
It is more meaningful that measurement water activity comparatively measures moisture.What water activity represented is the nargin that water saturation appears in current oil product, namely may occur the risk nargin of free water or emulsified water.Namely water activity refers to the saturation degree that dissolved water in fuel divides under Current Temperatures, and its scope is 0-1aw.0 represents oily adiabatic drying, exists without moisture, and 1 to represent water content in oil saturated, have free water even emulsified water produce.
The laboratory measurement method of water activity has two heat balance method of, tonometry, dew point measurement method.And these methods, because experimental facilities is complicated, huge, there is rigors for running environment, involve great expense, the reasons such as maintenance cost is high, the on-line measurement for water activity in oil product cannot be realized.
Utility model content
The purpose of this utility model is to provide a kind of on-line measurement transmitter for measuring water activity in oil product, cannot to the technical matters of water activity on-line measurement in oil product in prior art to solve.
The utility model provides a kind of on-line measurement transmitter for measuring water activity in oil product, comprises the water activity detecting element, signal acquisition module, signal processing module and the communication module that connect successively;
Described water activity detecting element is for measuring the water activity in oil product;
The water activity signal that described signal acquisition module measures for gathering described water activity detecting element, and send described water activity signal to described signal processing module;
Described signal processing module carries out process to described water activity signal and obtains testing result, and described testing result is outwards exported by described communication module.
Further, the described on-line measurement transmitter for measuring water activity in oil product, also comprises electrode, and the first end of described electrode is connected with described water activity detecting element, and the second end of described electrode is connected with described signal acquisition module.
Further, the described on-line measurement transmitter for measuring water activity in oil product, also comprises the seal be coated on outside described electrode, described seal isolation oil product and described signal acquisition module.
Further, the described on-line measurement transmitter for measuring water activity in oil product, also comprises the protective sleeve be arranged on outside described water activity detecting element.
Further; the described on-line measurement transmitter for measuring water activity in oil product; also comprise the detector unit be arranged in described protective sleeve; described detector unit is for measuring the temperature signal of oil product; and sending described temperature signal to described signal acquisition module, described signal acquisition module can send described temperature signal to described signal processing module.
Further, described water activity detecting element is humidity sensing element, and described detector unit is temperature sensor.
Further, the described on-line measurement transmitter for measuring water activity in oil product, also comprise the calibration module be connected with described signal processing module, described signal processing module sends described testing result to described calibration module, and described calibration module is used for calibrating described testing result.
Further, the described on-line measurement transmitter for measuring water activity in oil product, comprise the shell be connected with described protective sleeve, described signal acquisition module, signal processing module, communication module and calibration module are installed in described shell.
Further, described shell is provided with the signal connector be connected with described communication module, and described signal connector is provided with data-interface; Described testing result is sent to host computer by described data-interface by described communication module.
Further, the described on-line measurement transmitter for measuring water activity in oil product, also comprise power module, described power module is connected with described water activity detecting element, signal acquisition module, signal processing module, communication module, detector unit and calibration module, for powering for described water activity detecting element, signal acquisition module, signal processing module, communication module, detector unit and calibration module.
What the utility model provided has the following advantages for the on-line measurement transmitter measuring water activity in oil product:
(1) the utility model adopts water activity detecting element to measure water activity in oil product, be different from the element of the measurement moisture of other classes, this transmitter directly measures water activity aw value, accurately can show the degree of tested oil product water saturation, not by oil product type, working time, oil product is aging, all kinds of physical chemical factor interference such as adjuvant inefficacy;
Due to measurement is water activity in oil product, namely can guarantee all the time to exist without free water and emulsified water in oil product, and for valuable plant equipment, safe operation coefficient is higher;
(2) can realize the real-time seizure of the data under oil product normal operating condition, i.e. on-line measurement, compared with the off-line analysis of laboratory, the utility model data are more timely and convenient;
Water activity in Real-Time Monitoring oil product, accurate assurance oil pollution degree, stops security incident, increases gain on investments;
Achieve Change oil according to oil quality, more on schedule than saving oil mass more of changing oil, economic environmental protection;
For user, can real time on-line monitoring oil conditions, successfully solve in twice off-line analysis interval, the equipment oil product water inlet that may occur, the potential risk that the equipment that affects normally runs, for the safe and reliable operation of valuable oil-using units escorts.
(3) the utility model is without any need for chemical reagent, nontoxic no consumption part, environmentally safe, and operating cost is low;
(4) measuring process is without the need to manual operation, without the need to reagent preparation, and automatic data acquisition, process and transmission; Personnel can be reduced and extract oil product, the workload of lab analysis oil product, reduce human cost; And it is inaccurate to reduce the data that manual operation error and oil product secondary pollution cause.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the on-line measurement transmitter for measuring water activity in oil product that Fig. 1 provides for a kind of embodiment of the utility model;
The module diagram of the on-line measurement transmitter for measuring water activity in oil product that Fig. 2 provides for a kind of embodiment of the utility model.
Reference numeral:
1-water activity detecting element; 2-detector unit;
3-seal; 4-power module;
5-signal acquisition module; 6-signal processing module;
7-calibration module; 8-communication module;
9-signal connector; 10-shell;
11-electrode; 12-protective sleeve;
101-jointing.
Embodiment
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.Wherein, term " primary importance " and " second place " are two different positions.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
The structural representation of the on-line measurement transmitter for measuring water activity in oil product that Fig. 1 provides for a kind of embodiment of the utility model.
As shown in Figure 1, the utility model provides a kind of on-line measurement transmitter for measuring water activity in oil product, comprises the water activity detecting element 1, signal acquisition module 5, signal processing module 6 and the communication module 8 that connect successively; Water activity detecting element 1 is for measuring the water activity in oil product; The water activity signal that signal acquisition module 5 measures for gathering water activity detecting element 1, and send water activity signal to signal processing module 6; Signal processing module 6 pairs of water activity signals carry out process and obtain testing result, and testing result are outwards exported by communication module 8.Particularly, signal processing module 6 is sent to signal processing module 6 after filtering water activity signal, screen, amplifying.
Water activity detecting element 1, when detecting, is immersed in tested oil product by this on-line measurement transmitter being used for measuring water activity in oil product, can online, in real time, water activity and temperature in the oil product of monitoring used engine oil continuously,
What the utility model provided has the following advantages for the on-line measurement transmitter measuring water activity in oil product:
(1) the utility model adopts water activity detecting element 1 to measure water activity in oil product, be different from the element of the measurement moisture of other classes, this transmitter directly measures water activity aw value, accurately can show the degree of tested oil product water saturation, not by oil product type, working time, oil product is aging, all kinds of physical chemical factor interference such as adjuvant inefficacy;
Due to measurement is water activity in oil product, namely can guarantee all the time to exist without free water and emulsified water in oil product, and for valuable plant equipment, safe operation coefficient is higher;
(2) can realize the real-time seizure of the data under oil product normal operating condition, i.e. on-line measurement, compared with the off-line analysis of laboratory, the utility model data are more timely and convenient;
Water activity in Real-Time Monitoring oil product, accurate assurance oil pollution degree, stops security incident, increases gain on investments;
Achieve Change oil according to oil quality, more on schedule than saving oil mass more of changing oil, economic environmental protection;
For user, can real time on-line monitoring oil conditions, successfully solve in twice off-line analysis interval, the equipment oil product water inlet that may occur, the potential risk that the equipment that affects normally runs, for the safe and reliable operation of valuable oil-using units escorts.
(3) the utility model is without any need for chemical reagent, nontoxic no consumption part, environmentally safe, and operating cost is low;
(4) measuring process is without the need to manual operation, without the need to reagent preparation, and automatic data acquisition, process and transmission; Personnel can be reduced and extract oil product, the workload of lab analysis oil product, reduce human cost; And it is inaccurate to reduce the data that manual operation error and oil product secondary pollution cause.
In the present embodiment, for measuring the on-line measurement transmitter of water activity in oil product, also comprise electrode 11, the first end of electrode 11 is connected with water activity detecting element 1, and the second end of electrode 11 is connected with signal acquisition module 5.Electrode 11 is used as the conducting medium in oil product, and the water activity Signal transmissions measured by water activity detecting element 1 is to data acquisition module.
In the present embodiment, for measuring the on-line measurement transmitter of water activity in oil product, also comprise the seal 3 be coated on outside electrode 11, seal 3 isolates oil product and signal acquisition module 5.Can be welded on outside water activity detecting element 1 on 4 to 6 electrodes 11, preferably, electrode 11 adopts gold-plated electrode 11.Electrode 11 carries out overall package by seal 3, water activity signal can be avoided by external interference, improve accuracy of detection.Seal 3 also plays the buffer action of oil product and rear module simultaneously.
Particularly, seal 3 can be glass frit seal part, ceramic post sintering seal, wherein glass frit seal part is by glass and metal sintering, fluorinated material (such as tetrafluoroethene, polyurethane, epoxy resin etc.) is filled and is formed, ceramic post sintering seal is by pottery and metal sintering, and fluorinated material (such as tetrafluoroethene, polyurethane, epoxy resin etc.) is filled and formed.Wherein, adopt the transmitter of glass frit seal part fixed electorde 11, extensively can adapt to various oil pressure occasion, maximum voltage endurance capability can reach 30Mpa, and this voltage endurance capability has met common all kinds of oil pressure occasion.Meanwhile, glass frit seal part can insulating property between effective implemention electrode 11 and shell 10, reduce the error of water activity detecting element and detector unit measurement data.
In the present embodiment, for measuring the on-line measurement transmitter of water activity in oil product, also comprise the protective sleeve 12 be arranged on outside water activity detecting element 1.Protective sleeve 12 preferably adopts stainless steel grid protective cover.
Because water activity detecting element is on the impact of the measuring accuracy of water-in-oil activity by temperature; in order to improve the measuring accuracy of water activity detecting element; in the present embodiment; for measuring the on-line measurement transmitter of water activity in oil product; also comprise the detector unit 2 be arranged in protective sleeve 12; detector unit 2 is for measuring the temperature signal of oil product; and sending temperature signal to signal acquisition module 5, signal acquisition module 5 can send described temperature signal to described signal processing module 6.Signal processing module 5, according to the measuring accuracy variation with temperature trend of the water activity variation with temperature trend of oil product and water activity Detection theory, compensates water activity accuracy in oil product, to improve accuracy of detection.
Detector unit 2 can formula module integral with water activity detecting element 1 integration packaging.
In the present embodiment, water activity detecting element 1 can be humidity sensing element, such as thin-film capacitor humidity sensing element, electric resistance humidity sensitive element etc.; Detector unit 2 can be temperature sensor, thermistor (such as platinum resistance), triode etc.Wherein, temperature sensor can be experienced the temperature of oil product and the temperature transition of oil product is become exportable temperature signal.According to the temperature characterisitic (i.e. the resistance value variation with temperature relation of thermistor) of thermistor, the temperature of this thermistor place oil product can be learnt by the resistance value measuring thermistor two ends.Measuring accuracy can reach water activity 3%RH (RelativeHumidity, relative humidity), and temperature measurement accuracy can reach 0.5 DEG C.
In the present embodiment, for measuring the on-line measurement transmitter of water activity in oil product, also comprise the calibration module 7 be connected with signal processing module 6, signal processing module 6 sends described testing result to described calibration module 7, and described calibration module 7 is for calibrating described testing result.Particularly, first by the highest for measuring accuracy, measurement result no better than the transmitter of actual value as standard transmitter, transmitter and this standard transmitter of subsequent production measure the water activity of same oil product under equal condition simultaneously, the actual testing result that the transmitter that calibration module obtains subsequent production respectively records and the standard testing result that standard transmitter records, and actual testing result and standard testing result are compared, obtain deviation, and send this deviation to signal processing module, signal processing module carries out judging this deviation, if this deviation is in allowed band, then illustrate that the transmitter of subsequent production meets the requirements, can use, otherwise, if this deviation is not in allowed band, then undesirable, now data processing module is according to above-mentioned deviation, calculation process is carried out to the actual testing result that the transmitter of subsequent production records, to obtain the actual testing result after calibrating, the actual testing result after this calibration and above-mentioned standard testing result in the allowed band of deviation, thus complete calibration operation.
In the present embodiment, for measuring the on-line measurement transmitter of water activity in oil product, comprise the shell 10 be connected with protective sleeve 12, signal acquisition module 5, signal processing module 6, communication module 8 and calibration module 7 are installed in shell 10.The effect that seal 3 makes the water activity signal in electrode 11 and stainless steel casing 10 insulate, also plays the effect of sealing rear module simultaneously.The part that shell 10 wraps up signal acquisition module 5, signal processing module 6, communication module 8 and calibration module 7 can be the various applicable shapes such as cylindrical, square column type.
Shell 10 preferably adopts stainless steel integrally to process; adopt the protection that integrated stainless steel casing 10 realizes whole transmitter; degree of protection reaches IP67; effectively avoid in various harsh applied environment with the pollution of oil to transmitter; improve the scope of application of this transmitter, extend the life-span of this transmitter.Shell 10 also can be split-type structural.
Stainless steel casing 10 is insulated by seal 3 and electrode 11.One end (upper end in Fig. 1) of this shell 10 is provided with jointing 101, and protective sleeve 12 is arranged with in this jointing 101, and jointing and protective sleeve 12 are tightly connected.Jointing 101, for being connected with tested oil product place oil circuit, to make water activity detecting element 1 contact with the oil product in oil circuit with detector unit 2, thus detects oil product.This jointing 101 can be standard external joint, and tested oil product place oil circuit is provided with the female adapter coordinated with this male connection, and jointing 101 and described female adapter just complete the installation of this transmitter after tightening.
In addition, shell 10 is also provided with the through hole that power pole 11 inserts shell 10 inside.
In the present embodiment, shell 10 is provided with the signal connector 9 be connected with communication module 8, and signal connector 9 is provided with data-interface; Testing result is sent to host computer by data-interface by communication module 8.Data-interface can be arranged as required flexibly, and data-interface can be digital channel RS485 interface, RS232 interface, analog channel 4-20mA interface, 0-20mA interface, 0-5V interface etc.
In the present embodiment, signal connector 9 possesses the doubleway output function of standard digital RS485 interface and modulating output 4-20mA interface, easily can be connected with host computer, and water activity in oil product and temperature signal are uploaded to host computer.Adopt by RS485 digital interface mode, to realize transmitter producing, debugging and the calibration operation at scene.
In the present embodiment, signal connector 9 can be an independent M8 or M12 connector, can also comprise two M8 connectors.
Further, for measuring the on-line measurement transmitter of water activity in oil product, also comprise power module 4, power module 4 is connected with water activity detecting element 1, signal acquisition module 5, signal processing module 6, communication module 8, detector unit 2 and calibration module 7, for powering for water activity detecting element 1, signal acquisition module 5, signal processing module 6, communication module 8, detector unit 2 and calibration module 7.Power module 4 is for powering to whole transmitter, and power module 4 can select AC220V/DC24V voltage transformation module.
By foregoing description and Fig. 1 known, the utility model compact conformation, volume is little, be convenient to very much detect.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. for measuring an on-line measurement transmitter for water activity in oil product, it is characterized in that, comprising the water activity detecting element, signal acquisition module, signal processing module and the communication module that connect successively;
Described water activity detecting element is for measuring the water activity in oil product;
The water activity signal that described signal acquisition module measures for gathering described water activity detecting element, and send described water activity signal to described signal processing module;
Described signal processing module carries out process to described water activity signal and obtains testing result, and described testing result is outwards exported by described communication module.
2. the on-line measurement transmitter for measuring water activity in oil product according to claim 1, it is characterized in that, also comprise electrode, the first end of described electrode is connected with described water activity detecting element, and the second end of described electrode is connected with described signal acquisition module.
3. the on-line measurement transmitter for measuring water activity in oil product according to claim 2, is characterized in that, also comprise the seal be coated on outside described electrode, described seal isolation oil product and described signal acquisition module.
4. the on-line measurement transmitter for measuring water activity in oil product according to any one of claim 1-3, is characterized in that, also comprise the protective sleeve be arranged on outside described water activity detecting element.
5. the on-line measurement transmitter for measuring water activity in oil product according to claim 4; it is characterized in that; also comprise the detector unit be arranged in described protective sleeve; described detector unit is for measuring the temperature signal of oil product; and sending described temperature signal to described signal acquisition module, described signal acquisition module can send described temperature signal to described signal processing module.
6. the on-line measurement transmitter for measuring water activity in oil product according to claim 5, is characterized in that, described water activity detecting element is humidity sensing element, and described detector unit is temperature sensor.
7. the on-line measurement transmitter for measuring water activity in oil product according to claim 5, it is characterized in that, also comprise the calibration module be connected with described signal processing module, described signal processing module sends described testing result to described calibration module, and described calibration module is used for calibrating described testing result.
8. the on-line measurement transmitter for measuring water activity in oil product according to claim 7; it is characterized in that; comprise the shell be connected with described protective sleeve, described signal acquisition module, signal processing module, communication module and calibration module are installed in described shell.
9. the on-line measurement transmitter for measuring water activity in oil product according to claim 8, is characterized in that, described shell is provided with the signal connector be connected with described communication module, and described signal connector is provided with data-interface; Described testing result is sent to host computer by described data-interface by described communication module.
10. the on-line measurement transmitter for measuring water activity in oil product according to claim 1, it is characterized in that, also comprise power module, described power module is connected with described water activity detecting element, signal acquisition module, signal processing module, communication module, detector unit and calibration module, for powering for described water activity detecting element, signal acquisition module, signal processing module, communication module, detector unit and calibration module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520600726.9U CN204832092U (en) | 2015-08-11 | 2015-08-11 | A on line measurement changer for measuring water activity in oil |
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| CN201520600726.9U CN204832092U (en) | 2015-08-11 | 2015-08-11 | A on line measurement changer for measuring water activity in oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064233A (en) * | 2017-06-07 | 2017-08-18 | 铁科腾跃科技有限公司 | The online moisture measurement apparatus of polyurethane |
| CN115792141A (en) * | 2023-01-06 | 2023-03-14 | 广州兰泰仪器有限公司 | Method and system for improving balance detection efficiency of water activity meter |
-
2015
- 2015-08-11 CN CN201520600726.9U patent/CN204832092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064233A (en) * | 2017-06-07 | 2017-08-18 | 铁科腾跃科技有限公司 | The online moisture measurement apparatus of polyurethane |
| CN115792141A (en) * | 2023-01-06 | 2023-03-14 | 广州兰泰仪器有限公司 | Method and system for improving balance detection efficiency of water activity meter |
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