CN205015297U - Utilize oily trace moisture detection device of microwave - Google Patents
Utilize oily trace moisture detection device of microwave Download PDFInfo
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- CN205015297U CN205015297U CN201520804918.1U CN201520804918U CN205015297U CN 205015297 U CN205015297 U CN 205015297U CN 201520804918 U CN201520804918 U CN 201520804918U CN 205015297 U CN205015297 U CN 205015297U
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Abstract
The utility model relates to an utilize oily trace moisture detection device of microwave, it includes the testing shell body and oil inlet, the internal antenna boom that is equipped with of testing shell, the winding has the detection antenna on the antenna boom, it is connected with the external microwave processing circuit board electricity of testing shell to detect the tip of antenna, microwave processing circuit board include the high frequency electric way and with the microprocessor circuit that the high frequency electric way is connected, the high frequency electric way can produce a high frequency microwave signal that passes through to detect sky line emission transmission, and the high frequency electric way can be through detecting the electromagnetism echo signal after the antenna receipt is propagated in waiting to detect the product oil, and moisture detected signal is transmitted according to high frequency microwave signal and electromagnetism echo signal to the microprocessor circuit in the high frequency electric way, and the microprocessor circuit is confirmed according to moisture detected signal wait to detect the moisture content in the product oil. The utility model discloses compact structure, easy operation, measurement accuracy is high, and repeatability stability is good, and not only portable can also realize online real -time detection.
Description
Technical field
The utility model relates to a kind of pick-up unit, especially a kind of oily micro-moisture pick-up unit utilizing microwave, belongs to the technical field that profit detects.
Background technology
A lot of product oil all or many or containing micro-moisture, for some occasion, is above standard containing micro-moisture in oil product, just belongs to substandard product, such as grain oil, diesel oil etc.For the occasion that some are higher to moisture requirement, such as transformer oil, if moisture is high, transformer insulated hydraulic performance decline will be caused, thus cause major accident.Therefore, in power industry, need regularly sampling to be carried out to transformer oil and detect.
For the micro-water-bearing survey of oil product, all adopt karl Fischer titration coulomb method at present, it utilizes sampler (syringe) that the oil sample of fixed volume is injected into karl Fischer reagent solution, stir a period of time, moisture and reagent in oil sample are fully reacted, then by electrode by moisture electrolysis, the electricity consumed, the content of corresponding is exactly moisture.There is a lot of defect in this detection method: 1), process complexity is loaded down with trivial details; 2), sampling amount is too large by man's activity, gets 1ml oil sample error at least 5%; 3), measuring accuracy is poor, and import instrument precision is also lower than 5ppm; 4), poor repeatability, repeatability is greater than 5ppm, is all generally by repetitive measurement value is averaged process; 5), poor stability, instrument itself is drift easily; 6), need to consume a large amount of reagent and oil sample; 6), on-line checkingi cannot be realized.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of oily micro-moisture pick-up unit utilizing microwave, its compact conformation, simple to operate, measuring accuracy is high, repeated good stability, not only be easy to carry, can also on-line real-time measuremen be realized.
According to the technical scheme that the utility model provides, the described oily micro-moisture pick-up unit utilizing microwave, comprise the detection housing for holding product oil to be detected, detection housing is provided with the oil-in for being injected into by product oil in described detection housing, antenna holder is provided with in described detection housing, described antenna holder is wound with detection antenna in spiral distribution, detects antenna and antenna holder mutually insulated; The end detecting antenna is electrically connected with the microwave treatment circuit board detected outside housing;
Described microwave treatment circuit board comprise for the microcontroller circuit detecting the high-frequency circuit that is electrically connected of antenna ends and be connected with described high-frequency circuit; High-frequency circuit can produce the high-frequency microwave signal by detecting antenna transmission transmission, and high-frequency circuit is received in the electromagnetic echoes signal after propagating in product oil to be detected by detecting antenna, high-frequency circuit transmits water-bearing survey signal according to high-frequency microwave signal and electromagnetic echoes signal to microcontroller circuit, and microcontroller circuit determines the water percentage in described product oil to be detected according to water-bearing survey signal.
Described detection housing is cylindric, and antenna holder is vertically distributed in the bottom detecting housing, and antenna holder and detection housing are in coaxial distribution.
Described oil-in is positioned at the top detecting housing, and is also provided with gas outlet on the top detecting housing.
Bottom outside detection housing is provided with the discharging tube for detecting the product oil discharge to be detected of injecting in housing, and described discharging tube is provided with tapping valve.
Penetrate in antenna holder after one end of described detection antenna is electrically connected with high-frequency circuit, and be positioned at the length distribution of detection antenna along described antenna holder of antenna holder;
Detecting after the other end of antenna be electrically connected with high-frequency circuit penetrates in detection housing from the bottom of detection housing, and be spirally wrapped around on the outer wall of antenna holder, described in the detection antenna be wrapped on antenna holder outer wall be connected with the detection antenna electric being positioned at antenna holder.
Described being wrapped between detection antenna on antenna holder outer wall and antenna holder fills and leads up polishing with epoxy resin, and detects antenna and utilize epoxy sealing with the joint portion detecting housing.
Described microwave treatment circuit board is positioned at and detects immediately below housing, and microwave treatment circuit board utilizes thread seal to be connected with detection housing.
Described microcontroller circuit is connected with communicating circuit, and the extension line be connected with communicating circuit is passed outside microwave treatment circuit board by the extension line interface on microwave treatment circuit board.
Advantage of the present utility model: product oil to be detected injects and detects in housing, frequency circuit transmits water-bearing survey signal according to high-frequency microwave signal and electromagnetic echoes signal to microcontroller circuit, microcontroller circuit determines the water percentage in described product oil to be detected according to water-bearing survey signal, structure is simple, install and easy for operation, testing staff only needs product oil to be detected to inject from oil-in to detect in housing, required water percentage can be obtained immediately, whole testing process only needs several seconds kind, testing process can not affect the characteristic of product oil to be detected, tested finished product oil sample still can continue to use, measuring accuracy is high, 1ppm can be reached, reproducible, good stability, impact by environment each side is little, little power consumption, overall power is less than 1W, can realize detecting the online micro-moisture in various Oil Production process, safe and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Description of reference numerals: 1-detection housing, 2-microwave treatment circuit board, 3-oil-in, 4-gas outlet, 5-antenna holder, 6-detect antenna, 7-discharging tube, 8-high-frequency circuit, 9-microcontroller circuit, 10-communicating circuit, 11-extension line interface, 12-connecting line and 13-tapping valve.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1: in order to the accuracy of detection to micro-moisture water percentage in product oil can be improved, realize the object of on-line checkingi, the utility model comprises the detection housing 1 for holding product oil to be detected, detection housing 1 is provided with the oil-in 3 for being injected into by product oil in described detection housing 1, antenna holder 5 is provided with in described detection housing 1, described antenna holder 5 is wound with detection antenna 6 in spiral distribution, detects antenna 6 and antenna holder 5 mutually insulated; The end detecting antenna 6 is electrically connected with the microwave treatment circuit board 2 detected outside housing 1;
Described microwave treatment circuit board 2 comprise for the microcontroller circuit 9 detecting the high-frequency circuit 8 that is electrically connected of antenna 6 two ends and be connected with described high-frequency circuit 8; High-frequency circuit 8 can produce the high-frequency microwave signal launching transmission by detecting antenna 6, and high-frequency circuit 8 is received in the electromagnetic echoes signal after propagating in product oil to be detected by detecting antenna 6, high-frequency circuit 8 transmits water-bearing survey signal according to high-frequency microwave signal and electromagnetic echoes signal to microcontroller circuit 9, and microcontroller circuit 9 determines the water percentage in described product oil to be detected according to water-bearing survey signal.
Particularly, product oil to be detected is accommodated by detecting housing 1, microwave treatment circuit board 2 is positioned at and detects outside housing 1, high-frequency circuit 8 can produce high-frequency microwave signal, the high-frequency microwave signal that high-frequency circuit 8 produces is applied to and detects on antenna 6, to enter in detection housing 1 after detecting antenna 6 transmission, thus generate an electromagnetic field in detection housing 1.Because electromagnetic wave is different in the characteristic of the Propagation of differing dielectric constant, especially the stage constants of water and oil is very large, moisture is larger than oil on electromagnetic transport property impact, thus high-frequency circuit 8 receives electromagnetic echoes signal by detecting antenna 6.High-frequency circuit 8, according to the high-frequency microwave signal produced and the change received between electromagnetic echoes signal, can produce water-bearing survey signal.Usually, water-bearing survey signal is the d. c. voltage signal proportional with water percentage, and microcontroller circuit 9 can determine the water percentage in product oil to be detected according to water-bearing survey signal.
In the utility model embodiment, high-frequency circuit 8 produces high-frequency microwave signal, receiving electromagnetic echoes signal by detecting antenna 6 and be known by the art personnel according to changing the process producing water-bearing survey signal between high-frequency microwave signal and electromagnetic echoes signal, can be specifically description explanation in CN104155315A with reference to publication number.Microcontroller circuit 9 can adopt conventional micro-chip processor, as single-chip microcomputer etc.During concrete enforcement, some water percentage corresponding with water-bearing survey signal can be stored in microcontroller circuit 9, thus by mode determination water percentage such as contrasts after the water-bearing survey signal receiving high-frequency circuit 8 transmission.Microcontroller circuit 9 can store the water percentage corresponding from water-bearing survey signal and can realize pre-determining according to the relation in different product oil between micro-moisture, and concrete deterministic process, known by the art personnel, repeats no more herein.
Further, described detection housing 1 is in cylindric, and antenna holder 5 is vertically distributed in the bottom detecting housing 1, and antenna holder 5 and detection housing 1 are in coaxial distribution.Described oil-in 3 is positioned at the top detecting housing 1, and is also provided with gas outlet 4 on the top detecting housing 1.Bottom outside detection housing 1 is provided with the discharging tube 7 for detecting the product oil discharge to be detected of injecting in housing 1, and described discharging tube 7 is provided with tapping valve 13.
In the utility model embodiment, detect housing 1 in cylindric, antenna holder 5 is less than the height of detection housing 1 detecting the length in housing 1, oil-in 3, exhausr port 4 are lived apart in the both sides of antenna holder 5 axis, the shape of antenna holder 5 can also be cylindric, and antenna holder 5 can adopt the insulating material of the oil resistants such as teflon.Gas when product oil can be injected by exhausr port 4 is discharged, and guarantees to detect in housing 1 to be full of described product oil to be detected.After having detected the product oil to be detected detected in housing 1, opened by tapping valve 13, the product oil detected in housing 1 is all discharged by discharging tube 7, prepares for next time is detected.
Penetrate in antenna holder 5 after one end of described detection antenna 6 is electrically connected with high-frequency circuit 8, and be positioned at the length distribution of detection antenna 6 along described antenna holder 5 of antenna holder 5;
Detecting to penetrate from the bottom detecting housing 1 after the other end of antenna 6 is electrically connected with high-frequency circuit 8 detects in housing 1, and be spirally wrapped around on the outer wall of antenna holder 5, described in the detection antenna 6 be wrapped on antenna holder 5 outer wall be electrically connected with the detection antenna 6 being positioned at antenna holder 5.
In the utility model embodiment, detecting antenna 6 can adopt copper cash etc. to make, detect antenna 6 and there are two ends, in order to avoid signal disturbing, in detection antenna 6 in detection housing 1, a part is positioned at antenna holder 5 and along the length distribution of antenna holder 5, another part is spirally wrapped around on antenna holder 5.Because antenna holder 5 adopts insulating material to make, thus the transmission of the high-frequency microwave signal detected on antenna 6 can be ensured and receive electromagnetic echoes signal.During concrete enforcement, described in be wrapped between detection antenna 6 on antenna holder 5 outer wall and antenna holder 5 and fill and lead up polishing with epoxy resin, and detect antenna 6 and utilize epoxy sealing with the joint portion detecting housing 1.Detect after utilizing epoxy resin to fill and lead up polishing between antenna 6 and antenna holder 5, the product oil after detecting can be avoided to remain and be attached to antenna holder 5 and detect on antenna 6, guarantee at every turn to the precision that product oil detects.
Described microwave treatment circuit board 2 is positioned at and detects immediately below housing 1, and microwave treatment circuit board 2 utilizes thread seal to be connected with detection housing 1.
Described microcontroller circuit 9 is connected with communicating circuit 10, and the extension line 12 be connected with communicating circuit 10 is passed outside microwave treatment circuit board 2 by the extension line interface 11 on microwave treatment circuit board 2.
In the utility model embodiment, microwave treatment circuit board 2 utilizes thread seal to be connected with detection housing 1, to form dismountable syndeton, the shape of microwave treatment circuit board 2 can also be cylindric, microwave treatment circuit board 2 and detection housing 1 are in coaxial distribution, and microwave treatment circuit board 2 adopts O-ring seal to seal with the joint portion detecting housing 1.Microcontroller circuit 9 can be connected, microcontroller circuit 9 to be determined the water percentage display translation of product oil to be detected with outside host computer or display terminal by communicating circuit 10 and extension line 12.Described communicating circuit 10 can be the form of the data communication of RS485 interface, RS232 interface, GPRS module or other wire and wireless, specifically can select as required, repeat no more herein.
According to the above description, oily trace water content described in the utility model comprises the steps:
A, be provided for the detection housing 1 holding product oil to be detected, and in detection housing 1, fill product oil to be detected by the oil-in 3 detected on housing 1;
Antenna holder 5 in b, detection housing 1 is wound around detection antenna 6 in spiral distribution, on detection antenna 6, applies high-frequency microwave signal by the high-frequency circuit 8 detected on the outer microwave treatment circuit board 2 of housing 1;
C, high-frequency circuit 8 are received in the electromagnetic echoes signal after propagating in product oil to be detected by detecting antenna 6, high-frequency circuit 8 transmits water-bearing survey signal according to high-frequency microwave signal and electromagnetic echoes signal to microcontroller circuit 9, and microcontroller circuit 9 determines the water percentage in described product oil to be detected according to water-bearing survey signal.
In the utility model embodiment, the frequency that high-frequency circuit 8 produces high-frequency microwave signal is 430MHz, and the unit of water percentage can be ppm.
The utility model product oil to be detected injects and detects in housing 1, frequency circuit 8 transmits water-bearing survey signal according to high-frequency microwave signal and electromagnetic echoes signal to microcontroller circuit 9, microcontroller circuit 9 determines the water percentage in described product oil to be detected according to water-bearing survey signal, structure is simple, install and easy for operation, testing staff only needs product oil to be detected to inject from oil-in 3 to detect in housing 1, required water percentage can be obtained immediately, whole testing process only needs several seconds kind, testing process can not affect the characteristic of product oil to be detected, tested finished product oil sample still can continue to use, measuring accuracy is high, 1ppm can be reached, reproducible, good stability, impact by environment each side is little, little power consumption, overall power is less than 1W.Can realize detecting the online micro-moisture in various Oil Production process, safe and reliable.
Claims (8)
1. one kind utilizes the oily micro-moisture pick-up unit of microwave, it is characterized in that: comprise the detection housing (1) for holding product oil to be detected, detection housing (1) is provided with the oil-in (3) for being injected into by product oil in described detection housing (1), antenna holder (5) is provided with in described detection housing (1), described antenna holder (5) is wound with detection antenna (6) in spiral distribution, detects antenna (6) and antenna holder (5) mutually insulated; The end detecting antenna (6) is electrically connected with detection housing (1) microwave treatment circuit board (2) outward;
Described microwave treatment circuit board (2) comprise for the microcontroller circuit (9) detecting the high-frequency circuit (8) that is electrically connected of antenna (6) two ends and be connected with described high-frequency circuit (8); High-frequency circuit (8) can produce the high-frequency microwave signal launching transmission by detecting antenna (6), and high-frequency circuit (8) is received in the electromagnetic echoes signal after propagating in product oil to be detected by detecting antenna (6), high-frequency circuit (8) transmits water-bearing survey signal according to high-frequency microwave signal and electromagnetic echoes signal to microcontroller circuit (9), and microcontroller circuit (9) determines the water percentage in described product oil to be detected according to water-bearing survey signal.
2. the oily micro-moisture pick-up unit utilizing microwave according to claim 1, it is characterized in that: described detection housing (1) is in cylindric, antenna holder (5) is vertically distributed in the bottom detecting housing (1), and antenna holder (5) and detection housing (1) are in coaxial distribution.
3. the oily micro-moisture pick-up unit utilizing microwave according to claim 1, is characterized in that: described oil-in (3) is positioned at the top detecting housing (1), and is also provided with gas outlet (4) on the top detecting housing (1).
4. the oily micro-moisture pick-up unit utilizing microwave according to claim 1, it is characterized in that: be provided with the discharging tube (7) for detecting the product oil discharge to be detected of injecting in housing (1) in detection housing (1) bottom outward, described discharging tube (7) is provided with tapping valve (13).
5. the oily micro-moisture pick-up unit utilizing microwave according to claim 1, it is characterized in that: penetrate in antenna holder (5) after one end of described detection antenna (6) is electrically connected with high-frequency circuit (8), and be positioned at the length distribution of detection antenna (6) along described antenna holder (5) of antenna holder (5);
Penetrating from the bottom detecting housing (1) after the other end detecting antenna (6) is electrically connected with high-frequency circuit (8) detects in housing (1), and be spirally wrapped around on the outer wall of antenna holder (5), described in the detection antenna (6) be wrapped on antenna holder (5) outer wall be electrically connected with the detection antenna (6) being positioned at antenna holder (5).
6. the oily micro-moisture pick-up unit utilizing microwave according to claim 5, it is characterized in that: described in be wrapped between detection antenna (6) on antenna holder (5) outer wall and antenna holder (5) and fill and lead up polishing with epoxy resin, and detect antenna (6) and utilize epoxy sealing with the joint portion detecting housing (1).
7. the oily micro-moisture pick-up unit utilizing microwave according to claim 2, it is characterized in that: described microwave treatment circuit board (2) is positioned to be detected immediately below housing (1), and microwave treatment circuit board (2) utilizes thread seal to be connected with detection housing (1).
8. the oily micro-moisture pick-up unit utilizing microwave according to claim 1, it is characterized in that: described microcontroller circuit (9) is connected with communicating circuit (10), the extension line (12) be connected with communicating circuit (10) passes microwave treatment circuit board (2) outward by the extension line interface (11) on microwave treatment circuit board (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520804918.1U CN205015297U (en) | 2015-10-13 | 2015-10-13 | Utilize oily trace moisture detection device of microwave |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520804918.1U CN205015297U (en) | 2015-10-13 | 2015-10-13 | Utilize oily trace moisture detection device of microwave |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203564A (en) * | 2015-10-13 | 2015-12-30 | 江苏麦赫物联网科技有限公司 | Device and method for detecting trace water in oil by using microwaves |
| CN106246174A (en) * | 2016-08-12 | 2016-12-21 | 中国石油天然气集团公司 | A kind of column specific retention detection probe based on electromagnetic wave |
| CN108037144A (en) * | 2017-11-27 | 2018-05-15 | 中国石油集团西部钻探工程有限公司 | Water ratio in oil well multi-frequency microwave measuring device |
-
2015
- 2015-10-13 CN CN201520804918.1U patent/CN205015297U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203564A (en) * | 2015-10-13 | 2015-12-30 | 江苏麦赫物联网科技有限公司 | Device and method for detecting trace water in oil by using microwaves |
| CN106246174A (en) * | 2016-08-12 | 2016-12-21 | 中国石油天然气集团公司 | A kind of column specific retention detection probe based on electromagnetic wave |
| CN106246174B (en) * | 2016-08-12 | 2019-06-11 | 中国石油天然气集团公司 | A kind of column specific retention detection probe based on electromagnetic wave |
| CN108037144A (en) * | 2017-11-27 | 2018-05-15 | 中国石油集团西部钻探工程有限公司 | Water ratio in oil well multi-frequency microwave measuring device |
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