CN103017871B - A kind of test unit being applicable to aircraft fuel system test - Google Patents

A kind of test unit being applicable to aircraft fuel system test Download PDF

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Publication number
CN103017871B
CN103017871B CN201210524176.8A CN201210524176A CN103017871B CN 103017871 B CN103017871 B CN 103017871B CN 201210524176 A CN201210524176 A CN 201210524176A CN 103017871 B CN103017871 B CN 103017871B
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oil
microprocessor
fuel
test unit
oil pump
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CN103017871A (en
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韩永良
傅俊旭
谷伟岩
韩琳琳
夏青
曹琦
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SOUTH CHINA MANUFACTURING BASE OF CHINA AVIATION INDUSTRY GENERAL AIRCRAFT CO LTD
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SOUTH CHINA MANUFACTURING BASE OF CHINA AVIATION INDUSTRY GENERAL AIRCRAFT CO LTD
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Abstract

The present invention relates to Field of Aviation Manufacturing, disclose a kind of test unit being applicable to aircraft fuel system test, comprising: microprocessor, electromagnetic switch, solenoid valve, flow recorder, oil pump; Microprocessor, is electrically connected with electromagnetic switch, flow recorder, for the data according to parameter preset and the input of described flow recorder, transmits control signal to electromagnetic switch; Electromagnetic switch, is electrically connected respectively with solenoid valve, oil pump, opens or closes valve and oil pump open and close work for Controlling solenoid valve; The first interface of solenoid valve and the output pumping hole of oil pump are mechanically connected, and first mouth of pipe of the second interface and oiling pipeline is mechanically connected, for the on off operating mode between control oil pump and oiling pipeline; The data of current record for recording the oil mass flowing out oiling pipeline, and are input to microprocessor by flow recorder.Application the technical program when aircraft fuel system is tested, can improve the accuracy that oil mass adds, and reduces test error.

Description

A kind of test unit being applicable to aircraft fuel system test
Technical field
The present invention relates to Field of Aviation Manufacturing, particularly a kind of test unit being applicable to aircraft fuel system test.
Background technology
Fuel tank is the chief component of aircraft, utilizes the fuel pump in fuel tank, to engine fuel feeding, normally works for engine.And for the aircraft of harsh product installation, the oil mass indicated by its fuel level gauge (for showing the amount of fuel of fuel tanker) and actual oil mass are also inconsistent, need to test aircraft fuel system, to calibrate fuel level gauge.Aircraft fuel system test specifically has three aspects: one, calibrate oil mass zero-bit; Two, the linearity of fuel level gauge is calibrated; Three, fuel tank full capacity is calibrated.
Oil mass zero adjustment method is specifically: add a fixing oil mass to fuel tank, disconnect the oil supply pipe of fuel tank and engine, utilizing the oil pump in fuel tank, pumped by fuel oil and reclaim, until oil not when being pumped out, fuel level gauge being calibrated to zero starting bit of scale.Refuel in fuel tank first time and pump in the whole process of fuel oil, due to the structure of fuel tank, must some fuel oil can not be pumped out, the fuel oil of this part is called unavailable fuel oil.The amount of unavailable fuel oil is relevant with the structure of fuel tank, is fuel tank build-in attribute.
After zero adjustment, then carry out linearity calibration to fuel level gauge, concrete grammar is: according to user's needs, selects an oil mass interval, first adds the oil mass at this interval, then according to the oil mass calibration fuel level gauge scale added.The oil mass linearly added successively again, calibrates corresponding scale successively.Such as: after zero adjustment, selecting the oil mass of 10 kilograms as interval, first add the oil mass of 10 kilograms, is 10 kilograms by the checking the calibration of fuel level gauge; Add 20,30 successively again ... etc. oil mass, calibrate 20 kilograms of fuel level gauge, 30 kilograms successively ... scale.
Full capacity calibration steps is that the full oil mass of fuel tank provided by design document joins in full amount in the fuel tank of aircraft, after fuel level gauge display is stable, and the scale of calibration full capacity.Due to the existence of unavailable fuel oil, full capacity is less than the oil capacity added.
In prior art, the step of refueling when adopting an exerciser to complete calibration, this tester comprises: a column type oil tank, an oil pump is provided with in oil tank, utilize oil pump to join in the fuel tank of aircraft by the oil inside exerciser, rely on the scale in the naked eyes reading fuel contents gauge of people, control the amount of fuel added.Therefore the error in dipping of fuel oil is very large, between about 5 to 10 kilograms of errors.Although on zero adjustment no impact, in linearity calibration and full capacity calibration, affect larger.In addition, the oil tank of exerciser is the column type erect, and bottom surface is smooth, after moisture and contamination precipitation, difficult in maintenance, not easy cleaning.
Summary of the invention
The embodiment of the present invention first object is to provide a kind of test unit being applicable to aircraft fuel system test, and application the technical program when carrying out aircraft fuel system test, can improve the accuracy that oil mass adds, reducing test error.
First aspect, the invention provides a kind of test unit being applicable to aircraft fuel system test, described test unit is loaded on mobile handcart, and described test unit comprises: microprocessor, electromagnetic switch, solenoid valve, flow recorder, oil pump;
Described microprocessor, is electrically connected with described electromagnetic switch, described flow recorder, for the data according to parameter preset and the input of described flow recorder, transmits control signal to described electromagnetic switch;
Wherein, described parameter preset comprises currently needs volume read-out, refueling times and accumulative total amount of refueling, and the data of described input comprise: the oil mass of described flow recorder record;
Described electromagnetic switch, is electrically connected respectively with described solenoid valve, described oil pump, for according to described control signal, controls the unlatching of described solenoid valve or valve-off and control described oil pump start or quit work;
The first interface of described solenoid valve and the output pumping hole of described oil pump are mechanically connected, and the second interface of described solenoid valve and first mouth of pipe of oiling pipeline are mechanically connected, for controlling the on off operating mode between described oil pump and described oiling pipeline;
Described flow recorder, for recording the oil mass that flows out described oiling pipeline and the data of current record being input to described microprocessor;
Described flow recorder comprises first-class gauge and second gauge, and described microprocessor is electrically connected with described flow recorder and specifically comprises:
The output terminal of described first-class gauge is connected with the first signal input part of described microprocessor, and the output terminal of described second gauge is connected with the secondary signal input end of described microprocessor.
In conjunction with first aspect, under the first implementation, described test unit also comprises:
Fuel oil filter, is mechanically connected with second mouth of pipe of oil returning tube, for filtering the fuel oil flowing through described oil returning tube;
First mouth of pipe of described oil returning tube is mechanically connected with outside aircraft oil pump pumping hole.
In conjunction with the first implementation of first aspect, under the second implementation, described flow recorder, also for recording the flow flowing through described fuel oil filter.
In conjunction with first aspect, under the third implementation, described test unit also comprises:
Oil tank, described oil tank comprises: the first column type cavity, the first inverted cone-shaped cavity;
The end face of described first inverted cone-shaped cavity is connected with described first column type cavity bottom surface, forms one and determines space.
In conjunction with the third implementation of first aspect, under the 4th kind of implementation, the vertex of a cone top of described first inverted cone-shaped cavity is provided with Draw off valve.
In conjunction with first to fourth kind of arbitrary implementation of first aspect or first aspect, under the 5th kind of implementation, described test unit also comprises:
Input unit, is electrically connected with described microprocessor, for inputting described parameter preset for user;
Described parameter preset also comprises: oil return total amount;
Display, is electrically connected with described microprocessor, for showing information to described user;
Wherein, described information comprises one or more following combination:
Temperature in the oil mass of described oil mass recorder trace, described oiling pipeline in the density of fuel oil, described oil tank and described parameter preset.
In conjunction with the 5th kind of mode of first aspect, under the 6th kind of implementation, described test unit also comprises:
Report output device, is electrically connected with described microprocessor, for exporting oiling form or oil return form;
The information that described oiling form or oil return form comprise has: the described information to user's display.
Therefore, compared to the scale adopting naked eyes to read fuel contents gauge in prior art, to determine to refuel oil mass, adopt technical solution of the present invention, user only needs the parameter preset pre-entered, can carry out processing to this parameter preset and calculate by transfer microprocessor in backstage, transmitting control signal to electromagnetic switch.Electromagnetic switch is according to the control signal received, and Controlling solenoid valve is opened and control oil pump is opened, the oil mass of carrying to oiling pipeline with control oil pump.Flow recorder record is through the fuel flow of oiling pipeline externally fuel tank conveying, and data are passed to microprocessor, microprocessor carries out computing according to these data.When the oil mass of flow recorder record reaches or is about to the value reaching parameter preset setting, microprocessor sends another control signal to electromagnetic switch, and for electromagnetic switch according to this control signal, Controlling solenoid valve is closed and control oil pump is closed.Whole refueling process is undertaken calculating and controlling by microprocessor, by the control errors of volume read-out within one kilogram, can reduce human error.Therefore adopt technical solution of the present invention accurately can control the amount of fuel of externally conveying, improve the accuracy of test, reduce the error of test.
Further, test unit of the present invention adds oil return function, and the fuel oil in fuel tanker pumps by the fuel pump in fuel tanker, through the fuel oil filter of this test unit, after filtering out impurity, moisture etc., return in the oil tank of this test unit, recycle to reach.Meanwhile, the fuel oil after filtration is by its flow of flow recorder record, and the flow of oil return is supplied to user by microprocessor.In whole oil return process, microprocessor is by the control errors of recirculating oil quantity within one kilogram, and user can adjust calibration test according to recirculating oil quantity.The accuracy of further raising test unit, reduces the error of test.
Further, the oil tank of this test unit is the unitized construction of column type and inverted cone-shaped.Because fuel oil is after depositing a period of time, can precipitate, sediment is generally: water, oily impurity etc.Sediment, while guaranteeing the useful volume of oil tank, is effectively concentrated on the vertex of a cone top of back taper cavity by this unitized construction.Be provided with Draw off valve at the vertex of a cone top of back taper cavity, user only need open Draw off valve, sediment externally can be discharged.In addition, when oil tank cleans, Clean-waste liquid gravitate accumulates in vertex of a cone top, so that discharging of waste liquid after the cleaning is completed, is conducive to user and cleans oil tank.Therefore, adopt technical solution of the present invention can improve the convenience of user's use.
Further, this device provides input unit and display, user can direct control input unit, input is refueled or recirculating oil quantity, display, according to the oil mass of oil mass recorder trace, shows the oil mass of current external conveying or internally backflow to user, accurately control to reach and monitor, the accuracy of further raising test unit, reduces the error of test.
To sum up, adopt technical solution of the present invention, when aircraft fuel system is tested, the accuracy that oil mass adds can be improved, reduce the error of test.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention 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 only some embodiments of the present invention, 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.
A kind of structural representation being applicable to the test unit of aircraft fuel system test that Fig. 1 provides for the embodiment of the present invention 1;
A kind of structural representation being applicable to the test unit of aircraft fuel system test that Fig. 2 provides for the embodiment of the present invention 2;
The electrical block diagram of the microprocessor that Fig. 3 provides for the embodiment of the present invention 2 and flow recorder;
A kind of structural representation being applicable to the test unit of aircraft fuel system test that Fig. 4 provides for the embodiment of the present invention 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
See Fig. 1, the present embodiment provides a kind of test unit being applicable to aircraft fuel system test, is applicable to the aircraft fuel system test of aircraft.This exerciser comprises: microprocessor 101, electromagnetic switch 102, solenoid valve 103, flow recorder 104, oil pump 105, oil tank 106.
Wherein the annexation of each parts and principle of work as follows:
Microprocessor 101, is electrically connected with electromagnetic switch 102, flow recorder 104, for the data come according to parameter preset and flow recorder 104 transmission, transmits control signal to electromagnetic switch 103.
In the present embodiment, transmit by flow recorder 104 data come to comprise: the oil mass that flow recorder 104 records.
Electromagnetic switch 102, is electrically connected respectively with solenoid valve 103, oil pump 105, and for according to the control signal that receives, Controlling solenoid valve 103 is opened or valve-off and control oil pump 105 start or quit work.
The first interface of solenoid valve 103 and the output pumping hole of oil pump 105 are mechanically connected, and the second interface of solenoid valve 103 and first mouth of pipe of oiling pipeline are mechanically connected, for the on off operating mode between control oil pump 105 and oiling pipeline.
Flow recorder 104, for recording the oil mass of outflow oiling pipeline and the data of current record being passed to described microprocessor.
In the present embodiment, flow recorder 104 can be, but not limited to as flowmeter, can be, but not limited to be mechanically connected with second mouth of pipe of oiling pipeline.
Oil tank 106 comprises: the first column type cavity, the first inverted cone-shaped cavity.
In the present embodiment, the end face of the first inverted cone-shaped cavity is connected with the first column type cavity bottom surface, forms one and determines space.The degree of tilt of the first inverted cone-shaped cavity can be, but not limited to as 5-7 degree, and its vertex of a cone top is provided with Draw off valve.This Draw off valve is for discharging the fuel oil sediment in oil tank.
In the present embodiment, oil pump 105 can be, but not limited to the centre position of cavity edge to cone point of the first inverted cone-shaped cavity being arranged on oil tank 106.Oil pump 105 is arranged on the useful volume that this position is conducive to improving oil tank 106, and prevents sediment from being pumped to fuel tanker by oil pump.Oil pump 105 can be, but not limited to as model is the direct current oil pump of BL-49.
The filling test flow process of this test unit is as follows:
User inputs parameter preset to test unit, and microprocessor 101, according to parameter preset, transmits control signal to electromagnetic switch 102.Electromagnetic switch 102 is according to this control signal, and Controlling solenoid valve 103 is opened and control oil pump 105 is opened, the oil mass of carrying to oiling pipeline with control oil pump 105.Flow recorder 104 records the fuel flow through oiling pipeline externally fuel tank conveying, and by data feedback to microprocessor 101, microprocessor 101 carries out computing according to these data.When the oil mass that flow recorder 104 records reaches or be about to the value reaching parameter preset setting, microprocessor 101 sends another control signal to electromagnetic switch 102, for electromagnetic switch 102 according to this control signal, Controlling solenoid valve 103 is closed and control oil pump 105 is closed, and completes oiling.Whole refueling process is undertaken calculating and controlling by microprocessor, by the control errors of volume read-out within one kilogram, can reduce human error.
In the present embodiment, parameter preset can be, but not limited to comprise: currently need volume read-out, refueling times, accumulative total amount of refueling.User can arrange arbitrary volume read-out, can repeatedly arrange, and improves the practicality of user.
In this enforcement, can be, but not limited to install surplus valve between solenoid valve 103 and oil pump 105, this surplus valve is used for after solenoid valve 103 cuts out, when oil pump 105 not yet cuts out, reduce the pressure between solenoid valve 103 and oil pump 105, improve equipment safety and prevent pipeline leakage of oil.
In the present embodiment, test unit can be, but not limited to be loaded on mobile handcart, improves the test dirigibility of test unit.
In the present embodiment, can be, but not limited to arrange a derailing switch, for the power supply of direct manual ON solenoid valve 103 with oil pump 105, control device refuels.
Therefore, compared to the scale adopting naked eyes to read fuel contents gauge in prior art, to determine to refuel oil mass, adopt technical solution of the present invention, user only needs the parameter preset pre-entered, can carry out processing to this parameter preset and calculate by transfer microprocessor 101 in backstage, transmitting control signal to electromagnetic switch 102.Electromagnetic switch 102 is according to the control signal received, and Controlling solenoid valve 103 is opened and control oil pump 105 is opened, the oil mass of carrying to oiling pipeline with control oil pump 105.Flow recorder 104 records the fuel flow through oiling pipeline externally fuel tank conveying, and data are passed to microprocessor 101, microprocessor 101 carries out computing according to these data.When the oil mass that flow recorder 104 records reaches or be about to the value reaching parameter preset setting, microprocessor 101 sends another control signal to electromagnetic switch 102, for electromagnetic switch 102 according to this control signal, Controlling solenoid valve 103 is closed and control oil pump 105 is closed.Whole refueling process is undertaken calculating and controlling by microprocessor 101, by the control errors of volume read-out within one kilogram, can reduce human error.Therefore adopt technical solution of the present invention accurately can control the amount of fuel of externally conveying, improve the accuracy of test, reduce the error of test.
Further, the oil tank 106 of this test unit is the unitized construction of column type and inverted cone-shaped.Because fuel oil is after depositing a period of time, can precipitate, sediment is generally: water, oily impurity etc.Sediment, while the useful volume guaranteeing oil tank 106, is effectively concentrated on the vertex of a cone top of back taper cavity by this unitized construction.Be provided with Draw off valve at the vertex of a cone top of back taper cavity, user only need open Draw off valve, sediment externally can be discharged.In addition, when oil tank 106 cleans, Clean-waste liquid gravitate accumulates in vertex of a cone top, so that discharging of waste liquid after the cleaning is completed, is conducive to user and cleans oil tank.Therefore, adopt technical solution of the present invention can improve the convenience of user's use.
Embodiment 2:
See Fig. 2, the present embodiment provides a kind of test unit being applicable to aircraft fuel system test, is applicable to the aircraft fuel system test of aircraft.This exerciser comprises: microprocessor 201, electromagnetic switch 202, solenoid valve 203, flow recorder 204, oil pump 205, oil tank 206, fuel oil filter 207.
Wherein the annexation of each parts and principle of work as follows:
Microprocessor 201, is electrically connected with electromagnetic switch 202, flow recorder 204, for the data come according to parameter preset and flow recorder 204 transmission, transmits control signal to electromagnetic switch 203.
In the present embodiment, transmit by flow recorder 204 data come to comprise: the oil mass that flow recorder 204 records.Parameter preset can be, but not limited to comprise: currently need volume read-out, refueling times, accumulative total amount, the oil return total amount of refueling.User can arrange arbitrary volume read-out, can repeatedly arrange, and improves the practicality of user.
Electromagnetic switch 202, is electrically connected respectively with solenoid valve 203, oil pump 205, and for according to the control signal that receives, Controlling solenoid valve 203 is opened or valve-off and control oil pump 205 start or quit work.
The first interface of solenoid valve 203 and the output pumping hole of oil pump 205 are mechanically connected, and the second interface of solenoid valve 203 and first mouth of pipe of oiling pipeline are mechanically connected, for the on off operating mode between control oil pump 205 and oiling pipeline.
Flow recorder 204 is connected with second mouth of pipe of oiling pipeline, for recording the oil mass of outflow oiling pipeline and the data of current record being passed to described microprocessor.
Oil tank 206 comprises: the first column type cavity, the first inverted cone-shaped cavity.
The more detailed content of these parts can be, but not limited to record accordingly see oil tank 106 in embodiment 1.
Fuel oil filter 207, is mechanically connected with second mouth of pipe of oil returning tube, and for filtering the fuel oil flowing through this oil returning tube, first mouth of pipe of this oil returning tube is mechanically connected with outside aircraft oil pump pumping hole.
In the present embodiment, flow filter 204 is also for recording the fuel flow flowing through fuel oil filter 207.Flow recorder 204 can be, but not limited to be connected with fuel oil filter 207.
In the present embodiment, when test unit carries out filling test and oil return test simultaneously, flow recorder 204 can be, but not limited to recorded stream simultaneously and goes out oil tank 206 and the fuel flow flowing to oil tank 206.Flow recorder 204 can be, but not limited to comprise: first-class gauge, second gauge.When first-class gauge is for recording filling test, flowing to the fuel flow of oil tank 206, when second gauge is for recording filling test, flowing to the fuel flow of oil tank 206.
See the circuit diagram that Fig. 3, Fig. 3 are microprocessor 201 and flow recorder 204.Wherein, Reference numeral LJ1 is first-class gauge, and Reference numeral LJ2 is second gauge.First-class gauge LJ1 is connected with signal input part PC0-16, PC0-15 circuit of microprocessor respectively with the output terminal of second gauge LJ2, each serial connection resistance R1, R2 between this connecting circuit.The effect of resistance R1, R2 is the signal output signal of first-class gauge LJ1 and second gauge LJ2 being pulled upward to 0-5V, for microcontroller acquires, calculating and process.The port 2 of first-class gauge LJ1 and second gauge LJ2 is connected in series with signal ground respectively.The port 3 of first-class gauge LJ1 and second gauge LJ2 is connected in series with direct supply DC respectively.The port 4 of first-class gauge LJ1 and second gauge LJ2 respectively with power supply be connected in series.
The filling test flow process of this test unit can be, but not limited to record accordingly see in embodiment 1.
The oil return experiment process of this test unit is as follows:
First port of oil returning tube is mechanically connected with outside aircraft oil pump, and during oil return, the fuel oil in fuel tanker, under the pressure effect of aircraft fuel pump, flows to test unit through oil returning tube.Fuel oil, through fuel oil filter 207, after the impurity in fuel oil or moisture filter, flows to oil tank 206.Flow through the fuel flow of filtrator 207 by flow recorder 204 record, data on flows is passed to microprocessor by flow recorder 204.User can real time inspection oil return time, the capacity of returns of fuel oil, so that user carries out control operation to test.
Therefore the present embodiment, except possessing the beneficial effect of embodiment 1, also possesses following beneficial effect:
The test unit of the present embodiment adds oil return function, and the fuel oil in fuel tanker pumps by outside oil pump, through the fuel oil filter 207 of this test unit, after filtering out impurity, moisture etc., returns in the oil tank 206 of this test unit, recycles to reach.Meanwhile, the fuel oil after filtration records its flow by flow recorder 204, and the flow of oil return is supplied to user by microprocessor 201.In whole oil return process, microprocessor is by the control errors of recirculating oil quantity within one kilogram, and user can adjust calibration test according to recirculating oil quantity.The accuracy of further raising test unit, reduces the error of test.
Embodiment 3:
See Fig. 4, the present embodiment provides a kind of test unit being applicable to aircraft fuel system test, is applicable to the aircraft fuel system test of aircraft.This exerciser comprises: microprocessor 301, electromagnetic switch 302, solenoid valve 303, flow recorder 304, oil pump 305, oil tank 306, fuel oil filter 307, display 308, input unit 309.
Wherein the annexation of each parts and principle of work as follows:
Microprocessor 301, is electrically connected with electromagnetic switch 302, flow recorder 304, for the data come according to parameter preset and flow recorder 304 transmission, transmits control signal to electromagnetic switch 303.
Electromagnetic switch 302, is electrically connected respectively with solenoid valve 303, oil pump 305, and for according to the control signal that receives, Controlling solenoid valve 303 is opened or valve-off and control oil pump 305 start or quit work.
The first interface of solenoid valve 303 and the output pumping hole of oil pump 305 are mechanically connected, and the second interface of solenoid valve 303 and first mouth of pipe of oiling pipeline are mechanically connected, for the on off operating mode between control oil pump 305 and oiling pipeline.
Flow recorder 304 is connected with second mouth of pipe of oiling pipeline, for recording the oil mass of outflow oiling pipeline and the data of current record being passed to described microprocessor.
The more detailed content of these parts can be, but not limited to record accordingly see oil tank 204 in embodiment 2.
Oil tank 306 comprises: the first column type cavity, the first inverted cone-shaped cavity.
The more detailed content of these parts can be, but not limited to record accordingly see oil tank 106 in embodiment 1.
Fuel oil filter 307, is mechanically connected with second mouth of pipe of oil returning tube, and for filtering the fuel oil flowing through this oil returning tube, first mouth of pipe of this oil returning tube is mechanically connected with outside aircraft oil pump pumping hole.
Display 308, is electrically connected with microprocessor 301, for showing information to user.
In the present embodiment, the information to user's display comprises one or more following combination: the density of fuel oil, the temperature of oil tank 306 and parameter preset in the oil mass that oil mass register 304 records, oiling pipeline.
Input unit 309, is electrically connected with microprocessor, for inputting parameter preset for user.
In the present embodiment, parameter preset comprises: currently need volume read-out, refueling times, accumulative total amount and the oil return total amount of refueling.
In the present embodiment, display 308 can be, but not limited to as touch screen displays, and input unit 309 can be, but not limited to nestedly be arranged in touch screen displays, uses artificial touch screen to input parameter preset to test unit.
In the present embodiment, can be, but not limited to add report output device.Report output device is electrically connected with microprocessor, for exporting oiling form or oil return form.The information that the information that form comprises provides to user for display 308.
Therefore the present embodiment, except the beneficial effect possessing embodiment 1-2, also has following beneficial effect:
This device provides display 308 and input unit 309, user can direct control input unit 309, input is refueled or recirculating oil quantity, the oil mass that display 308 records according to oil mass register 304, the oil mass of current external conveying or internally backflow is shown to user, accurately control to reach and monitor, improve the accuracy of test unit further, reduce the error of test.
Device embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying performing creative labour, are namely appreciated that and implement.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in this technical scheme.

Claims (7)

1. be applicable to a test unit for aircraft fuel system test, it is characterized in that, described test unit is loaded on mobile handcart, and described test unit comprises: microprocessor, electromagnetic switch, solenoid valve, flow recorder, oil pump;
Described microprocessor, is electrically connected with described electromagnetic switch, described flow recorder, for the data according to parameter preset and the input of described flow recorder, transmits control signal to described electromagnetic switch;
Wherein, described parameter preset comprises currently needs volume read-out, refueling times and accumulative total amount of refueling, and the data of described input comprise: the oil mass of described flow recorder record;
Described electromagnetic switch, is electrically connected respectively with described solenoid valve, described oil pump, for according to described control signal, controls the unlatching of described solenoid valve or valve-off and control described oil pump start or quit work;
The first interface of described solenoid valve and the output pumping hole of described oil pump are mechanically connected, and the second interface of described solenoid valve and first mouth of pipe of oiling pipeline are mechanically connected, for controlling the on off operating mode between described oil pump and described oiling pipeline;
Described flow recorder, for recording the oil mass that flows out described oiling pipeline and the data of current record being input to described microprocessor;
Described flow recorder comprises first-class gauge and second gauge, and described microprocessor is electrically connected with described flow recorder and specifically comprises:
The output terminal of described first-class gauge is connected with the first signal input part of described microprocessor, and the output terminal of described second gauge is connected with the secondary signal input end of described microprocessor.
2. test unit according to claim 1, is characterized in that, also comprises:
Fuel oil filter, is mechanically connected with second mouth of pipe of oil returning tube, for filtering the fuel oil flowing through described oil returning tube;
First mouth of pipe of described oil returning tube is mechanically connected with outside aircraft oil pump pumping hole.
3. test unit according to claim 2, is characterized in that,
Described flow recorder, also for recording the flow flowing through described fuel oil filter.
4. test unit according to claim 1, is characterized in that, also comprises:
Oil tank, described oil tank comprises: the first column type cavity, the first inverted cone-shaped cavity;
The end face of described first inverted cone-shaped cavity is connected with described first column type cavity bottom surface, forms one and determines space.
5. test unit according to claim 4, is characterized in that,
The vertex of a cone top of described first inverted cone-shaped cavity is provided with Draw off valve.
6., according to the arbitrary described test unit of claim 1 to 5, it is characterized in that, also comprise:
Input unit, is electrically connected with described microprocessor, for inputting described parameter preset for user;
Described parameter preset also comprises: oil return total amount;
Display, is electrically connected with described microprocessor, for showing information to described user;
Wherein, described information comprises one or more following combination:
Temperature in the oil mass of described oil mass recorder trace, described oiling pipeline in the density of fuel oil, described oil tank and described parameter preset.
7. test unit according to claim 6, is characterized in that, also comprises:
Report output device, is electrically connected with described microprocessor, for exporting oiling form or oil return form;
The information that described oiling form or oil return form comprise has: the described information to user's display.
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