CN203688479U - Jet fuel freezing point detection instrument - Google Patents
Jet fuel freezing point detection instrument Download PDFInfo
- Publication number
- CN203688479U CN203688479U CN201420025067.6U CN201420025067U CN203688479U CN 203688479 U CN203688479 U CN 203688479U CN 201420025067 U CN201420025067 U CN 201420025067U CN 203688479 U CN203688479 U CN 203688479U
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- freezing point
- detector
- circuit board
- photoelectric detector
- jet fuel
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- 238000007710 freezing Methods 0.000 title claims abstract description 33
- 230000008014 freezing Effects 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010561 standard procedure Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001073 sample cooling Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model discloses a jet fuel freezing point detection instrument, and belongs to the technical field of detection devices. A refrigeration system of the jet fuel freezing point detection instrument adopts a combined structure consisting of compressor refrigeration and semiconductor refrigeration; a detection system consists of a sample injector, a detector and a waste liquid bottle which are connected with one another in sequence through pipelines; a display control system comprises a bottom-layer circuit board, an industrial-level control main board and a touch liquid crystal screen which are electrically connected; the bottom-layer circuit board is electrically connected with a stirrer of a detector, a photoelectric detector and a temperature sensor and is electrically connected with a compressor and a semiconductor through a relay; during detection, the display control system controls the refrigeration system to cool the detector; the photoelectric detector is adopted to detect a freezing point signal entering a test sample in the detector, and the touch liquid crystal screen displays a freezing point value through the bottom-layer circuit board and the industrial-level control main board. The detection instrument is high in cooling speed and high in working efficiency; the automation degree of a detection process is enhanced; the photoelectric detector replaces eyes for observation, so that the error is small, and the repetitiveness is high.
Description
Technical field
The utility model relates to a kind of jet fuel freezing point detector, belongs to technology of instrument and meter field.
Background technology
The method of China's evaluation jet fuel freezing point mainly contains aviation fuel kryoscopy, and its cardinal principle is to be first by sample cooling, after there is macroscopic crystallization, heats up again, and the minimum temperature that the hydro carbons crystallization of formation is disappeared is completely decided to be freezing point.The domestic robot that does not also meet at present standard method completely, manually instrument is measured according to standard method, and troublesome poeration, long, the artificial visual inspection error of minute is large, repeatability is bad.
At present external advanced Fast Measurement freezing point method is mainly take France and Canada as representative, the freezing point Quick testing instrument that wherein the ISL company of France and Canadian PHASE company produce, all in order to measure the freezing point of jet fuel, but all do not meet the requirement of China's standard method.
Summary of the invention
In order to overcome the problem existing in above-mentioned existing detection, the utility model provides a kind of jet fuel freezing point detector, meets to greatest extent the requirement of standard method.
The technical solution adopted in the utility model is: a kind of jet fuel freezing point detector, comprise refrigeration system, detection system and display control program, described refrigeration system adopts the unitized construction of compressor cooling and semiconductor refrigerating, described detection system adopts pipeline to connect successively injector, detecting device and waste liquid bottle, described display control program comprises the bottom circuit board being electrically connected, technical grade control mainboard and touch LCD screen, the stirrer of bottom circuit board and detecting device, photoelectric detector and temperature sensor are electrically connected, and be electrically connected with semiconductor with compressor by relay, in the time detecting, display control program control refrigeration system is lowered the temperature to detecting device, and the freezing point signal that adopts photoelectric detector detection to enter sample in detecting device shows freezing point numerical value by touch LCD screen display after bottom circuit board and technical grade control mainboard.
The sensing chamber of described detecting device is arranged on semi-conductive top, and sensing chamber two ends are provided with injection port and outlet, and stirrer is arranged in sensing chamber, and temperature sensor is arranged on sensing chamber's inside center position, and photoelectric detector is arranged on sensing chamber two ends.
Described bottom circuit board adopts ATmega128A-AU single-chip microcomputer, the simulating signal of temperature sensor and photoelectric detector is by 4051 passage numeral control simulation electronic switch controls, collecting temperature sensor and photoelectric detector signal, after the amplifier D6 amplifying by simulating signal, carry out 14 A/D converters by TLC7135C chip, then process by ATmega128A-AU processor.
Adopt the principle of work of technique scheme to be: jet fuel is joined in sensing chamber, utilize semiconductor and Cempression engine refrigerating apparatus refrigeration, stir jet fuel with stirrer simultaneously, while appearance along with temperature reduction crystal, light runs into crystallization generation scattering phenomenon, the signal that detecting device detects strengthens, and signal intensity strengthens along with increasing of crystal, in the time that temperature raises, crystallization disappears, scattering phenomenon weakens, the signal intensity reduction that detecting device detects tends towards stability, and whole process is measured based on this principle of diffusion light scattering technology.Finally by highly sensitive fluorescence detector, the signal detecting is exported by converter, take horizontal ordinate as specimen temperature, ordinate is detection signal, and in the time that sudden change appears in detection signal, corresponding temperature is the freezing point of sample.
The beneficial effects of the utility model are: the refrigeration system of this jet fuel freezing point detector adopts the unitized construction of compressor cooling and semiconductor refrigerating, detection system adopts pipeline to connect successively injector, detecting device and waste liquid bottle, display control program comprises the bottom circuit board, technical grade control mainboard and the touch LCD screen that are electrically connected, bottom circuit board is electrically connected with stirrer, photoelectric detector and the temperature sensor of detecting device, and is electrically connected with semiconductor with compressor by relay; In the time detecting, display control program control refrigeration system is lowered the temperature to detecting device, and the freezing point signal that adopts photoelectric detector detection to enter sample in detecting device shows freezing point numerical value by touch LCD screen display after bottom circuit board and technical grade control mainboard.This detector cooling rate is fast, and work efficiency is high, has strengthened the automaticity of testing process, and photoelectric detector replaces visual inspection, and error is little, reproducible.
Accompanying drawing explanation
Fig. 1 is a kind of fundamental diagram of jet fuel freezing point detector.
Fig. 2 is a kind of structural representation of jet fuel freezing point detector.
Fig. 3 is detector arrangement figure.
Fig. 4 is bottom circuit board schematic diagram.
In figure: 1, refrigeration system, 2, detection system, 2a, injection port, 2b, outlet, 2c, stirrer, 2d, photoelectric detector, 2e, temperature sensor, 2f, sensing chamber, 2g, semiconductor, 3, display control program, 4, liquid crystal display support, 5, liquid crystal display, 6, power supply, 7, Industry Control mainboard, 8, interface board, 9, condenser, 10, blower fan, 11, compressor, 12, base frame, 12a, support, 13, rear plate.
Embodiment
Fig. 1 shows the fundamental diagram of jet fuel freezing point detector.A kind of jet fuel freezing point detector, comprise refrigeration system 1, detection system 2 and display control program 3, refrigeration system 1 adopts the unitized construction of compressor cooling and semiconductor refrigerating, detection system 2 adopts pipeline to connect successively injector, detecting device and waste liquid bottle, display control program 3 comprises the bottom circuit board, technical grade control mainboard and the touch LCD screen that are electrically connected, bottom circuit board is electrically connected with stirrer 2c, photoelectric detector 2d and the temperature sensor 2e of detecting device, and is electrically connected with semiconductor with compressor by relay.In the time detecting, display control program 3 is controlled refrigeration system 1 to detecting device cooling, and the freezing point signal that adopts photoelectric detector 2d detection to enter sample in detecting device shows freezing point numerical value by touch LCD screen display after bottom circuit board and technical grade control mainboard.
Fig. 2 shows a kind of structural representation of jet fuel freezing point detector.In figure, detection system 2 is arranged on the right side on base frame 12, and liquid crystal display support 4 is arranged on base frame 12, liquid crystal display 5 is arranged on liquid crystal display support 4, compressor 11 is arranged on base frame 12, and blower fan 10 is arranged on condenser 9, and the assembly of condenser 9 and blower fan 10 is arranged on base frame 12.Support 12a is arranged on base frame 12, and is connected with liquid crystal display support 4.Industry Control mainboard 7, power supply 6 are arranged on support 12a.Interface board 8 is arranged on rear plate 13.Compressor 11, condenser 9, detection system 2 use Red-copper Capillary Tube, connect to form refrigeration system 1 with welding manner, leak test after welding, then be filled with cold-producing medium.By the detecting device electrical connection in liquid crystal display 5, Industry Control mainboard 7, power supply 6, interface board 8, detection system 2, composition display control program 3.
Fig. 3 shows detector arrangement figure.The 2f of sensing chamber is arranged on semiconductor 2g top, there are injection port 2a and outlet 2b in the 2f of sensing chamber two ends, and stirrer 2c is arranged in the 2f of sensing chamber, the temperature of temperature sensor 2e test samples, be arranged on sensing chamber's 2f inside center position, photoelectric detector 2d is arranged on the 2f of sensing chamber two ends.Materials with 10mL syringe, by the injection port of instrument front end, sample injection is entered in instrument, sample enters into detecting device by pipeline and measures, and after having tested, by the mode of displacement, the sample of having tested is discharged in waste liquid bottle.
Fig. 4 shows bottom circuit board schematic diagram.Bottom circuit board adopts ATmega128A-AU High Performance SCM, and oscillatory circuit is the generation that realizes ATmega128A-AU reset reliably and the main frequency of operation of ATmega128A-AU, and wherein G1 is 7.3728MHZ quartz crystal oscillator, and C16 and C17 are the electric capacity of 22PF.PD2 is connected with 12 pins with MAX202 chip 11 with PD3 pin, changes into through MAX202 chip TTL/CMOS level, and MAX202 chip 13 is connected with 2 pin with 1 of 3P plug-in unit with 14 pins, and 3 pin ground connection, with 7 communications of technical grade control mainboard.PB0 pin is connected with 5.1k resistance, by triode 9012 amplifying circuits, controls the unlatching of hummer.PB2 pin is connected with 3 pin of X3 4p plug-in unit, the unlatching of control heater.PB4 pin output pwm pulse signal, it is mainly to realize by the inner 16 bit timing device T3 of ATmega128A that PWM controls, the mode of operation of setting timer 3 is quick PWM pattern 15, changes output frequency by the value of controlling OCR3A, controls the unlatching of stirrer.PB pin is connected with 7407 chip 5 pin, through the larger electric current of 7407 chip output, controls semiconductor 2h and opens.PB6 pin is connected with 7407 chip 5 pin, after 7407 chips, controls compressor 11 and opens.The simulating signal of temperature sensor 2e and photoelectric detector 2d is by 4051 passage numeral control simulation electronic switch controls, collecting temperature sensor 2e and photoelectric detector 2d signal, after the amplifier D6 amplifying by simulating signal, carry out 14 A/D converters by TLC7135C chip, then process by ATmega128A-AU processor.Positive and negative 12V power supply for power acquisition, gives each device power supply by filter rectifier.
Use above-mentioned freezing point detector, after power switch is opened, technical grade control mainboard 7 starts, and display is transferred to liquid crystal display 5, and liquid crystal display 5 shows relevant information, and user is undertaken alternately, inputting relevant sample information by liquid crystal display 5 and instrument.Technical grade control mainboard 7 carries out communication with bottom circuit board by RS232 interface, and the various control commands of instrument are issued bottom circuit board by upper level applications, and the single-chip microcomputer of bottom circuit board decomposes order again, and all parts is controlled; The control program to upper strata the feedback of status of all parts, comprises specimen temperature, detection signal etc. simultaneously.Wiring underlayer plate carries out switch control by control signal to relay, then controls compressor 11 and semiconductor 2g.The simulating signal of temperature sensor 2e is converted to digital signal by the change-over circuit of bottom, is transferred to technical grade control mainboard 7, by touching technical grade control mainboard 5 displays temperatures.The pulse signal that sample stirrer provides by bottom circuit board carries out work.Photoelectricity testing part simulating signal be converted to digital signal by the change-over circuit of bottom, be transferred to technical grade control mainboard 7, show whether crystallization of sample by touching technical grade control mainboard 5, temperature reduces and occurs crystal, temperature rising crystallization disappears.
Claims (3)
1. a jet fuel freezing point detector, comprise refrigeration system (1), detection system (2) and display control program (3), it is characterized in that: described refrigeration system (1) adopts the unitized construction of compressor cooling and semiconductor refrigerating, described detection system (2) adopts pipeline to connect successively injector, detecting device and waste liquid bottle, described display control program (3) comprises the bottom circuit board being electrically connected, technical grade control mainboard and touch LCD screen, the stirrer (2c) of bottom circuit board and detecting device, photoelectric detector (2d) and temperature sensor (2e) are electrically connected, and be electrically connected with semiconductor with compressor by relay, in the time detecting, display control program (3) is controlled refrigeration system (1) to detecting device cooling, and the freezing point signal that adopts photoelectric detector (2d) detection to enter sample in detecting device shows freezing point numerical value by touch LCD screen display after bottom circuit board and technical grade control mainboard.
2. a kind of jet fuel freezing point detector according to claim 1, it is characterized in that: the sensing chamber (2f) of described detecting device is arranged on the top of semiconductor (2g), sensing chamber (2f) two ends are provided with injection port (2a) and outlet (2b), stirrer (2c) is arranged in sensing chamber (2f), temperature sensor (2e) is arranged on sensing chamber (2f) inside center position, and photoelectric detector (2d) is arranged on sensing chamber (2f) two ends.
3. a kind of jet fuel freezing point detector according to claim 1, it is characterized in that: described bottom circuit board adopts ATmega128A-AU single-chip microcomputer, the simulating signal of temperature sensor (2e) and photoelectric detector (2d) is by 4051 passage numeral control simulation electronic switch controls, collecting temperature sensor (2e) and photoelectric detector (2d) signal respectively, after the amplifier D6 amplifying by simulating signal, carry out 14 A/D converters by TLC7135C chip, then process by ATmega128A-AU processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025067.6U CN203688479U (en) | 2014-01-15 | 2014-01-15 | Jet fuel freezing point detection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025067.6U CN203688479U (en) | 2014-01-15 | 2014-01-15 | Jet fuel freezing point detection instrument |
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| Publication Number | Publication Date |
|---|---|
| CN203688479U true CN203688479U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420025067.6U Expired - Lifetime CN203688479U (en) | 2014-01-15 | 2014-01-15 | Jet fuel freezing point detection instrument |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743774A (en) * | 2014-01-15 | 2014-04-23 | 大连邦能石油仪器有限公司 | Detector for freezing point of jet fuel |
| CN104807849A (en) * | 2015-04-30 | 2015-07-29 | 国家农产品保鲜工程技术研究中心（天津） | Multi-channel freezing point quick determination device of fruits, vegetables and fruit and vegetable juice and application |
| CN111830076A (en) * | 2019-04-19 | 2020-10-27 | 中国石油化工股份有限公司 | Method and device for detecting crystallization point and/or freezing point |
-
2014
- 2014-01-15 CN CN201420025067.6U patent/CN203688479U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743774A (en) * | 2014-01-15 | 2014-04-23 | 大连邦能石油仪器有限公司 | Detector for freezing point of jet fuel |
| CN104807849A (en) * | 2015-04-30 | 2015-07-29 | 国家农产品保鲜工程技术研究中心（天津） | Multi-channel freezing point quick determination device of fruits, vegetables and fruit and vegetable juice and application |
| CN104807849B (en) * | 2015-04-30 | 2017-08-25 | 国家农产品保鲜工程技术研究中心（天津） | Fruits and vegetables and its juice multichannel freezing point rapid determination device and application |
| CN111830076A (en) * | 2019-04-19 | 2020-10-27 | 中国石油化工股份有限公司 | Method and device for detecting crystallization point and/or freezing point |
| CN111830076B (en) * | 2019-04-19 | 2024-03-12 | 中国石油化工股份有限公司 | Method and device for detecting crystallization point and/or freezing point |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |