CN209321289U - A kind of auxiliary power unit fuel nozzle testboard - Google Patents
A kind of auxiliary power unit fuel nozzle testboard Download PDFInfo
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- CN209321289U CN209321289U CN201821770860.3U CN201821770860U CN209321289U CN 209321289 U CN209321289 U CN 209321289U CN 201821770860 U CN201821770860 U CN 201821770860U CN 209321289 U CN209321289 U CN 209321289U
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- 239000000446 fuel Substances 0.000 title claims abstract description 75
- 239000003921 oil Substances 0.000 claims abstract description 224
- 238000012360 testing method Methods 0.000 claims abstract description 66
- 239000002828 fuel tank Substances 0.000 claims abstract description 38
- 239000000295 fuel oil Substances 0.000 claims abstract description 37
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000003595 mist Substances 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 8
- 241000883990 Flabellum Species 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 239000013641 positive control Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000011990 functional testing Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 8
- 230000006378 damage Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model discloses a kind of auxiliary power unit fuel nozzle testboard, including closed loop fuel system, the closed loop fuel system includes fuel tank, oil pump, nozzle connection, spraying oil sump tank；The nozzle connection is for installing the fuel nozzle, the spraying oil sump tank is for collecting the fuel oil sprayed by the fuel nozzle, the spraying oil sump tank bottom is connected to the fuel tank, the fuel tank is connected to by testing pipeline with the nozzle connection, the oil pump is mounted on the testing tube road, and driving fuel oil flows to the nozzle connection；The testboard further includes Oil-temperature control system, oil pressure control system, flowmeter, spray angle test device；Respectively with the test piping connection, the spray angle test device is mounted on immediately below the nozzle connection for the Oil-temperature control system, oil pressure control system, flowmeter.The testboard is able to achieve the functional test to aircraft APU fuel nozzle, spray angle, flow and leakproofness including test nozzles.
Description
Technical field
The utility model belongs to aviation field, and in particular to a kind of aircraft auxiliary power plant fuel nozzle testboard.
Background technique
APU (auxiliary power unit) fuel nozzle is the critical component in core engine, influences the abundant degree of burning of fuel oil.
The abundant degree of burning of fuel oil (including rich oil, oil-poor) in the combustion chamber directly affects the performance of whole APU, determines whole
The working condition and service life of APU.
Fuel nozzle quantity is more on each model APU, and 131-9 model APU shares 10 fuel nozzles, APS3200 type
Number there are 6 main fuel nozzles and 3 primary fuel nozzles, APS2300 there are 12 single binary channel nozzles.
Test fuel nozzle, it is necessary to simulate true behaviour in service of the nozzle on APU, especially pressure, temperature are to combustion
The density and flow rate effect of oil are larger, it is therefore desirable to be accurately controlled to pressure, the temperature of the fuel oil of supply, to observe spray
Spray angle, flow and the leakproofness of mouth.Also, since fuel nozzle type is more, and for fuel pressure demands difference, also
It needs to realize switching rapidly between different pressures.
APU fuel nozzle is delivered to external repair manufacturer and is tested at present, and producer maintains secrecy to testboard, causes to test
Costly, the testing expense of a nozzle is 300 dollars or so, and the period is long, passes out to return from part and needs about one month
Time.If voluntarily built testboard, it can not only save sending for great number and repair testing expense, moreover it is possible to greatly shorten all turn-weeks of part
Phase.
Utility model content
The purpose of the invention of the present invention is to provide a kind of auxiliary power unit fuel nozzle testboards, to realize to winged
The functional test of machine APU fuel nozzle, spray angle, flow and leakproofness including test nozzles.
What the goal of the invention of the utility model was achieved through the following technical solutions: a kind of auxiliary power unit fuel nozzle
Testboard, including closed loop fuel system, the closed loop fuel system include fuel tank, oil pump, nozzle connection, spraying oil sump tank；
The nozzle connection is for installing the fuel nozzle, and the spraying oil sump tank is for collecting by the fuel nozzle
The fuel oil of ejection, the spraying oil sump tank bottom are connected to the fuel tank, and the fuel tank is connect by test pipeline with the nozzle
Head connection, the oil pump are mounted on the testing tube road, and driving fuel oil flows to the nozzle connection；
The testboard further includes Oil-temperature control system, oil pressure control system, flowmeter, spray angle test device；
The Oil-temperature control system, oil pressure control system, flowmeter respectively with the test piping connection, the jet angle
Degree test device is mounted on immediately below the nozzle connection.
When test, fuel nozzle is mounted on nozzle connection, and oil pump driving fuel from fuel tank flows to nozzle connection, and by firing
Oil burner nozzle sprays, and spraying oil sump tank collects the fuel oil sprayed, and final output makes fuel oil in the closed loop fuel system to fuel tank
In recycled.Oil-temperature control system, oil pressure control system are respectively used to the fuel oil that control is output to the fuel nozzle
Oil temperature and oil pressure, with reach the model fuel nozzle testing standard requirement, flowmeter, spray angle test device are used respectively
In the flow and spray angle of monitoring nozzle, also it can observe whether nozzle has oil leak by adjusting oil pressure to standard requirements range
Phenomenon occurs to assess the leakproofness of nozzle.The functionality of aircraft APU fuel nozzle is surveyed as it can be seen that above-mentioned testboard can be realized
Examination.
Since difference is larger sometimes to fuel pressure demands for different model fuel nozzle, to avoid maloperation that part is caused to damage
It is bad, the utility model it is intentional carry out small pressure test part and big pressure test part to separate test as far as possible, that takes changes
It is as follows into scheme: by the fuel tank to the nozzle connection, to be formed with two or more oil circuits, every oil circuit end is separately connected
The nozzle connection, the oil pump include high-power oil pump and small-power oil pump (in contrast), are arranged in different oil circuits.
When test, if the pressure span range on certain oil circuit is larger, range and precision in order to balance, while realizing pressure
The rapid switching of table is to improve testing efficiency, and the utility model takes following scheme: the oil pressure control system includes pressure
Table, the pressure gauge have different ranges, and different manometers are connected by switching valve with the test pipeline.
Oily filter is set in the closed loop fuel system, which uses triple oily filters, in the oil filler, fuel-displaced of the fuel tank
Oily filter is respectively set in mouth and the oil pump downstream, wherein the oily filter for being located at the oil pump downstream uses high pressure oily filter.
For the safety for sufficiently ensureing closed loop fuel system, the utility model is using regulation scheme after first depressurizing:
Add relief valve between the oil pump and the high pressure oily filter, the oil pressure control system further include oil return valve and
Delivery valve, the oil return valve and delivery valve are sequentially arranged at the high-pressure oil pump downstream.Relief valve is prevented due under for depressurizing
Trip pipeline blockage causes system pressure excessive, causes system injury, the subsequent cooperation for further passing through delivery valve and oil return valve
Regulating system pressure can increase the safety of system.
The flowmeter upstream, oil return valve downstream are equipped with regulating valve, this design is to prevent flowmeter damage.
Further to recycle fuel oil while atomization oil gas being avoided to interfere observation to influence testing efficiency, fired for the closed loop
Oil system adds exhausting oil mist separator, and the exhausting oil mist separator suction opening is connected to the spraying oil sump tank, realizes mist
Carburetion gas is rapidly separated oil return, and oil return opening is connected to the fuel tank.
The Oil-temperature control system includes fuel oil temperature display, temp controlled meter, cold feed pipeline and hot water supply line,
And heat exchanger, the fuel oil temperature display connects for monitoring fuel oil temperature with the temp controlled meter, the temp controlled meter and
The cold feed pipeline and hot water supply line are separately connected, and the heat exchanger is connected with the test pipeline, the cold water
The heat exchanger is passed through after supply line and hot water supply line confluence to exchange heat with fuel oil.
For the spray angle test device, mode is implemented as follows in the utility model recommendation: the spray angle test
Device measures tooling using spray-cone angle comprising central axis and a piece of above radially fixed flabellum on center shaft, it is described
The covering of the fan of flabellum is equipped with the angle line of corresponding different spray-cone angles, and the angle line is included at least for defining acceptability limit
Two spray-cone angle boundary angles lines.
The L-shaped cabinet type structure of testboard, the spraying oil sump tank, fuel tank are arranged in the one side of L-type cabinet up and down, spraying
Oil sump tank upper end is open, and exhausting oil mist separator covers above it such as smoke exhaust ventilator, and spraying oil sump tank front is retractable, and sets
There are transparent windows, the another side of the L-type cabinet constitutes control cabinet, the testboard control and the control of display unit concentrated setting
On the positive control panel of cabinet processed.
The flowmeter uses turbine flowmeter.
The utility model has the advantage that
One, economic and safety
Economy: when without testboard, the fuel nozzle each removed from APU is required to be sent to external repair manufacturer's progress
Test, costly (testing expense of a nozzle is 300 dollars), period length (passes out to return from part and needs one month
Time), the utility model testboard has saved sending for great number and has repaired testing expense, and greatly reduces part turn around time；
Safety: 1) this testboard use large and small two kinds of power oil pump, on the one hand can measuring pressure it is wider, on the other hand,
Compared to using single oil pump scheme, the utility model carries out small pressure test part and big pressure test part to separate test,
It plays a protective role to small pressure test part, effectively prevent the pressure as caused by maloperation excessive and the damage caused by part
Wound；
2) relief valve is arranged at fuel pump outlet, is prevented due to downstream tube using regulation scheme after first depressurizing for this testboard
Road blocking causes system pressure excessive, causes to damage to system, then, oil return valve is arranged on subsequent pipeline, and pass through confession
The cooperation of oil valve and oil return valve adjusts pressure, increases security of system: in actual operation, meeting when may just starting
Have and forget the case where checking delivery valve and oil return valve position, the setting of two valves is only opened in delivery valve, the shape that oil return valve closes
System just can instantaneous pressure under state.The influence of one valve is distributed on two valves, the safety of raising system is conducive to；
3) it is illuminated in this testboard oil sump tank using explosion-proof lamp, while all switches use flame-proof switch, guarantee was tested
The safety of journey；
Two, improve working efficiency
1) exhausting oil gas separator is added in oil-collecting upper box part, by exhausting mode, accelerates Oil-gas Separation, reduced oil gas and disappear
The time is dissipated, to reduce personnel's waiting time；
2) this testboard uses switching valve KCP4/P5The rapid switching for realizing pressure gauge is guaranteeing that accuracy of reading is more accurate
While, realization does not unload nozzle, multi-range measurement, such as to the flow rate test under the advanced professional etiquette constant-pressure of the same nozzle,
Then voltage-withstand test is carried out with bigger pressure again, advantage is obvious, then when carrying out the voltage-withstand test of big pressure, and advantage is especially aobvious
It is existing.
Three, guarantee measurement accuracy
1) the utility model realizes fuel oil temperature dynamic regulation using Oil-temperature control system, and it is constant to be effectively ensured oil temperature, can
Improve measuring accuracy；
2) flow velocity is converted to using turbine flowmeter by the revolving speed of turbine, then revolving speed is converted into the frequency directly proportional to flow
The output of rate signal, is as a result easy to digitize, and intuitively, accuracy is high, not only can detect instantaneous flow but also can measure total flow integration.
Detailed description of the invention
Fig. 1 is the design schematic diagram of the auxiliary power unit fuel nozzle testboard of the utility model specific embodiment
Fig. 2 is that the structure of the auxiliary power unit fuel nozzle testboard electric-control board of the utility model specific embodiment is shown
It is intended to；
Fig. 3 is that the auxiliary power unit fuel nozzle testboard data of the utility model specific embodiment are shown and valve is grasped
Control the structural schematic diagram of panel；
Fig. 4 is spray angle used by the auxiliary power unit fuel nozzle testboard of the utility model specific embodiment
The schematic diagram of test device perspective view；
Fig. 5 is the overall structure signal of the auxiliary power unit fuel nozzle testboard of the utility model specific embodiment
Figure；
Description of symbols: C1-C4 oil circuit, CT1、CT2Common oily filter, E1Exhausting oil mist separator, F1、F2Turbine flow
Meter, H0Oil filler, HP1Heater, HT1、HT2High pressure oily filter, IT0Import oily filter, K1-K7Electric switch, KA1、KA2Regulating valve,
KB0-KB2Ball valve, KCP4/P5Switching valve, KD1、KD2Relief valve, KP1-KP3、KP4/P5Delivery valve, KR1、KR2Oil return valve, M1、M2Electricity
Magnet valve, MP1、MP2Oil pump, P1-P5Pressure gauge, T1、T2Oil temperature display, TC1Temp controlled meter, TT1Heat exchanger, W1Water meter.
Specific embodiment
Fig. 1 is the design schematic diagram of the present embodiment auxiliary power unit fuel nozzle testboard.
Testboard includes closed loop fuel system first.Closed loop fuel system is mainly by fuel tank, oil pump, nozzle connection, spraying
Oil sump tank and exhausting oil mist separator composition.Nozzle connection is for installing fuel nozzle, and spraying oil sump tank is for collecting by fuel oil
The fuel oil that nozzle sprays.Spraying oil sump tank upper end is open in the present embodiment, and nozzle connection and its inside are opposite.In spraying oil sump tank
Explosion-proof lamp L is installed side1Illumination.Spraying oil sump tank bottom is connected to fuel tank, to send the fuel oil of collection back to fuel tank.Fuel tank passes through
Test pipeline is connected to nozzle connection.Oil pump is mounted on testing tube road, for driving fuel oil to flow to nozzle connection by fuel tank.It takes out
Wind oil mist separator E1It is connected on the inside of suction opening and spraying oil sump tank, is rapidly separated oil return, oil return for realizing atomization oil gas
Mouth is connected to fuel tank, is conducive to shorten the waiting time, is improved the further recycling of testing efficiency and fuel oil.
In the present embodiment, fuel tank is the enclosed construction being made of stainless steel, lower part by fuel tank seat supports and from
Ground setting, bottom installation is for controlling the ball valve KB to drain the oil0, liquid level indicating window and fuel oil temperature display T are installed in side0。
Fuel tank has oil filler T0, two oil outlets, and be respectively equipped with oil filler oily filter IT0With common oily filter CT2And CT1。
In the present embodiment, if there are four nozzle connection, correspondingly, formed from fuel tank to nozzle connection four oil circuit C1, C2,
C3, C4 are driven by two oil pumps altogether, and one is known as high-power oil pump, and another to compare down referred to as small-power oil pump, each oil pump drives
Dynamic two of them oil circuit.
High-power oil pump oil circuit is as shown, from common oily filter CT2The testing tube road risen, is sequentially connected ball valve KB2, it is big
Power oil pump MP2, high pressure oily filter HT2, regulating valve KA2, downstream test pipeline be branched into two-way, be respectively formed C3, C4 oil circuit,
Middle C3 oil circuit is sequentially connected delivery valve KP3, pressure gauge P3, C3 oil circuit is sequentially connected delivery valve KP4/P5, turbine flowmeter F2, temperature
Display T2, switching valve KCP4/P5, pressure gauge P4And P5Pass through switching valve K CP4/P5With the oil circuit connection.Pressure gauge P4And P5It is logical
Cross switching valve KCP4/P5Oil circuit C4 is connected, to realize that the rapid switching of pressure gauge is cut when the pressure limit of test object is wider
Pressure gauge is changed to be conducive to take into account range and measurement accuracy.
Small-power oil pump oil circuit is as shown, from common oily filter CT1The testing tube road risen, is sequentially connected ball valve KB1, it is big
Power oil pump MP1, high pressure oily filter HT1, regulating valve KA1, turbine flowmeter F1, temperature indicator T1, downstream is tested pipeline and is branched into
Two-way is respectively formed C1, C2 oil circuit, and wherein C1 oil circuit is sequentially connected delivery valve KP1, pressure gauge P1, C2 oil circuit is sequentially connected fuel feeding
Valve KP2, pressure gauge P2。
Small-power oil circuit, high-power oil circuit are respectively by by relief valve KD1、KD2The pressure relief pipe of control is connected to fuel tank,
The other end of two pressure relief pipes is connected in respectively between small-power oil circuit, the oil pump of high-power oil circuit and high pressure oily filter, which uses
In protection oil pump, to prevent oil pump damage.Above-mentioned oil filler oily filter, common oily filter and high-pressure oil pump constitute three heavy oil of the present embodiment
Filter system.The effect of oil filler oily filter is the impurity in the oil liquid filtered out when refueling for fuel tank, and it is fuel-displaced that common oily filter is located at fuel tank
At mouthful, for protecting pressure pump, compared to common oily filter (oil filler oily filter equally uses common oily filter), high pressure oily filter is thin
Filter, setting is in oil pump downstream, for protecting entire closed loop fuel system from pollution.The present embodiment oil pump is recommended to use gear
Pump.
Small-power oil circuit, high-power oil circuit are also respectively by by oil return valve KR1、KR2The oil return line and fuel tank of control connect
Logical, the other end of two oil return lines is connected in respectively between small-power oil circuit, the regulating valve of high-power oil circuit and high pressure oily filter.This reality
Example installation and adjustment valve before turbine flowmeter is applied, to prevent turbine flowmeter damage.It pressure gauge, delivery valve on every oil circuit and returns
Oil valve constitutes the oil circuit oil pressure regulating system, and the present embodiment adjusts pressure by using the linkage control of delivery valve and oil return valve
Power increases security of system: in actual operation, having when may just starting and forgets to check delivery valve and oil return valve position
The case where setting, the setting of two valves are only opened in delivery valve, and system just can instantaneous pressure in the state that oil return valve closes.By one
The influence of valve is distributed on two valves, is conducive to the safety of raising system.
The Oil-temperature control system of the present embodiment is mainly by temperature indicator T1, temp controlled meter TC1, cold feed pipeline and hot water
Supply line and heat exchanger TT1Composition.Temperature indicator T1For monitoring fuel oil temperature, with temp controlled meter TC1Connection, will supervise
Measured value is output to temp controlled meter TC1, temp controlled meter TC1It is connect respectively with cold feed pipeline and hot water supply line, in the present embodiment,
Heat exchanger TT1Only it is connected with the test pipeline of small-power oil pump oil circuit, leads to after cold feed pipeline and hot water supply line confluence
Enter heat exchanger TT1To exchange heat with the fuel oil in the oil circuit.
As shown, water inlet pipe is sequentially connected regulating valve KA0, water meter W1Afterwards, cold feed pipeline and hot water supply are branched into
Solenoid valve M is respectively set on cold feed pipeline, hot water supply line in pipeline1、M2, temp controlled meterTC1 Respectively with solenoid valve M1、M2
Connection, to control the water supply of cold feed pipeline and hot water supply line.Compared to cold feed pipeline, hot water supply line
Add having heaters HP1。
The present embodiment also sets up electric-control system.Electric-control system includes control circuit switch K1, explosion-proof lamp switch K2, temperature control opens
Close K3, Oil pump electrical machinery switch K4And K5, exhausting oil mist separator switch K6, heat exchanger switch K7, further include that partial switch state refers to
Show lamp, their concentrated settings are on electric-control board as shown in Figure 2.Above-mentioned switch recommends preferred scheme, using flame-proof switch.
System power supply uses AC220V.
The present embodiment also sets up data and shows and valve control panel, as shown in figure 3, include that pressure indicates, oil temperature instruction,
Flow instruction and delivery valve, oil return valve, switching valve.Especially by flow integrator for scene temperature, pressure, flow etc.
Various signals are acquired, show, control, and constitute digital acquisition system and control system.
Fig. 4 is the schematic diagram of spray angle test device perspective view used by the present embodiment.The present embodiment spray angle
Test device measures tooling using spray-cone angle comprising installs central axis 1 on the base 3 and four radially fixed at center
On axis, the flabellum 2 of decussate, the covering of the fan of flabellum 2 is equipped with the angle line of corresponding different spray-cone angles, and the angle line is extremely
It less include two spray-cone angle boundary angles lines for defining such as 70-115 ° of acceptability limit.
Fig. 5 is the structural schematic diagram of the present embodiment testboard.As shown, the whole L-shaped cabinet type structure of testboard, spraying
Oil sump tank a, fuel tank b or more are arranged in the one side of L-type cabinet, and oil sump tank a to fuel tank b uses gravity oil return.The spraying upper end oil sump tank a
Opening, exhausting oil mist separator c cover (not shown) above it such as smoke exhaust ventilator.The spraying front oil sump tank a is retractable, and sets
There is transparent windows a1.The another side of L-type cabinet constitutes control cabinet, and Fig. 2, electric-control board shown in Fig. 3, data are shown and valve behaviour
The equal concentrated setting of panel is controlled on the positive control panel d of the control cabinet.Testboard is designed to the structure, can. while adjusting
The reaction for observing nozzle, facilitates observation；Moreover, circuit part and oil circuit are partially separated design, be conducive to the peace of lifting system
Quan Xing.
There are four oil circuits altogether for the present embodiment testboard, can select different oil circuits according to the difference of test item.Oil circuit
C1、C2Carry out small flow nozzle performance test, oil circuit C3Carry out pressure integrity test, oil circuit C4Carry out the examination of big flow nozzle performance
It tests.
Operating instruction
One, it is checked before experiment
(1) check whether oil tank fuel amount is enough, and amount of fuel should be no less than volume of fuel tank 2/3, and not more than volume of fuel tank
4/5；
(2) fuel-tank outlet ball valve KB0Whether close；
(3) Oil-temperature control system water inlet regulating valve KA is checked0Whether open；
(4) system power supply master switch K is opened1, check whether system power supply indicator light is bright；
(5) oil circuit fuel control valve KP is checkedn(n=1~3) and KP4/P5Whether (Ying Quanguan) is closed entirely, oil circuit oil return valve
KRn(n=1 or 2) whether standard-sized sheet (Ying Quankai)；
(6) after system power supply opening, flow integrator F1With temp controlled meter TC1It need to preheat 20 minutes.
Two, small flow nozzle performance test
Open control circuit switch K1, open explosion-proof lamp switch K2, open Oil-temperature control system switching K3, open heat exchanger
Switch K7, spray-cone angle test fixture is installed.Exhausting oil mist separator switch K6 is opened, opens C1 and C2 oil circuit oil pump MP1's
Control switch K5 adjusts delivery valve KP1, KP2 and oil return valve KR1, observes oil temperature whether in required range, is such as requiring
In range, fuel nozzle to be measured is installed, adjusts the trystate that oil pressure reaches required, recording flowmeter F1 flow registration, note
Record oil temperature display T1Temperature registration, while nozzle spray angle is observed whether in acceptability limit.If oil temperature is lower than 24.5
DEG C, heater HP at this time1Water supply electromagnetic valve M2It will automatically turn on, after Oil-temperature control system water outlet there are flowing out, press survey
Heat exchanger starts switch TT in test stand1, Oil-temperature control system will automatically heat fuel oil, then by the outlet stream of fuel oil
Amount is adjusted to 10~13ml (single bit/second), heats and stops after fuel oil temperature reaches 27 DEG C, if oil temperature is higher than 29.5 DEG C, at this time
The cooling water solenoid valve M of Oil-temperature control system1It will automatically turn on, Oil-temperature control system will automatically cool down fuel oil,
Then the rate of discharge of fuel oil is adjusted to 10~13ml (single bit/second), it is cooling after fuel oil temperature drops to 27.5 DEG C to stop.Work as oil
After temperature reaches 24~30 DEG C of testing standard, fuel nozzle to be measured is mounted on oil circuit C1And C2On can be tested.It is completed
Afterwards, heat exchanger switch K is closed7, close Oil-temperature control system switching K3, standard-sized sheet oil return valve KR1, close delivery valve KP1、KP2, close
Exhausting oil mist separator switch K6, fuel nozzle is removed, spray-cone angle test fixture is removed, closes explosion-proof lamp switch K2, close control
Circuit switch K processed1。
Three, big flow nozzle performance is tested
Open control circuit switch K1, open explosion-proof lamp switch K2, fuel nozzle to be measured is mounted on oil circuit C4On, according to
Demand of the test item to pressure, by switching valve KCP4/P5Sense of rotation pressure gauge P4Or P5, open exhausting oil mist separator and open
Close K6(being selected according to mist of oil situation), opens C4Oil circuit oil pump MP2Control switch K4, adjust delivery valve KP4/P5And oil return valve
KR2, observe charge oil pressure table P4Or P5, until reaching required trystate, recording flowmeter F2Flow registration.It has tested
Bi Hou closes C4Oil circuit oil pump MP2Control switch K4, standard-sized sheet oil return valve KR2, close delivery valve KP4/P5, close exhausting mist of oil
Seperator switch K6, fuel nozzle is removed, explosion-proof lamp switch K is closed2, closing control circuit switch K1。
Four, pressure integrity test
Open control circuit switch K1, open explosion-proof lamp switch K2, fuel nozzle to be measured is mounted on oil circuit C3On.It opens
C3Oil circuit oil pump MP2Control switch K4, slowly adjust delivery valve KP3, close oil return valve KR2, observe charge oil pressure table P3Reach
Required trystate, observes whether fuel nozzle to be measured has oil leakage phenomenon.After test, C is closed3Oil circuit oil pump
MP2Control switch K4, standard-sized sheet oil return valve KR2, close delivery valve KP3, fuel nozzle is removed, explosion-proof lamp switch K is closed2, close
Control circuit switch K1。
Specific embodiments above is only used for being illustrated the utility model, it is necessary to indicated herein to be, above-mentioned implementation
Example does not constitute the limitation to scope of protection of the utility model.Those skilled in the art make according to the utility model disclosure
It is some it is nonessential modification and adjustment should fall into scope of protection of the utility model.
Claims (10)
1. a kind of auxiliary power unit fuel nozzle testboard, which is characterized in that including closed loop fuel system, the closed loop fuel
System includes fuel tank, oil pump, nozzle connection, spraying oil sump tank；
The nozzle connection is sprayed for collecting by the fuel nozzle for installing the fuel nozzle, the spraying oil sump tank
Fuel oil, the spraying oil sump tank bottom be connected to the fuel tank, and the fuel tank passes through test pipeline and nozzle connection company
Logical, the oil pump is mounted on the testing tube road, and driving fuel oil flows to the nozzle connection；
The testboard further includes Oil-temperature control system, oil pressure control system, flowmeter, spray angle test device；
Respectively with the test piping connection, the spray angle surveyed for the Oil-temperature control system, oil pressure control system, flowmeter
Trial assembly, which is set, to be mounted on immediately below the nozzle connection.
2. auxiliary power unit fuel nozzle testboard according to claim 1, which is characterized in that by the fuel tank to institute
Nozzle connection is stated, two or more oil circuits are formed with, every oil circuit end is separately connected the nozzle connection, and the oil pump includes
High-power oil pump and small-power oil pump are arranged in different oil circuits.
3. auxiliary power unit fuel nozzle testboard according to claim 2, which is characterized in that the oil pressure cntrol system
System includes pressure gauge, and the pressure gauge has different ranges, and different manometers pass through switching valve and the test pipeline phase
Even.
4. auxiliary power unit fuel nozzle testboard according to claim 3, which is characterized in that the closed loop fuel system
Oily filter is set in system, which uses triple oily filters, distinguishes in the oil filler of the fuel tank, oil outlet and the oil pump downstream
Oily filter is set, wherein the oily filter for being located at the oil pump downstream uses high pressure oily filter.
5. auxiliary power unit fuel nozzle testboard according to claim 4, which is characterized in that in the oil pump and institute
It states and adds relief valve between high pressure oily filter, the oil pressure control system further includes oil return valve and delivery valve, the oil return valve and confession
Oil valve is sequentially arranged at the oil pump downstream.
6. auxiliary power unit fuel nozzle testboard described in any one of -5 claims, feature exist according to claim 1
In the closed loop fuel system adds exhausting oil mist separator, the exhausting oil mist separator suction opening and the spraying oil-collecting
Case connection realizes that atomization oil gas is rapidly separated oil return, and oil return opening is connected to the fuel tank.
7. auxiliary power unit fuel nozzle testboard according to claim 6, which is characterized in that the Oil-temperature control system
System includes fuel oil temperature display, temp controlled meter, cold feed pipeline and hot water supply line and heat exchanger, the fuel oil temperature
Degree display is connect, the temp controlled meter and the cold feed pipeline and heat for monitoring fuel oil temperature with the temp controlled meter
Water supply line is separately connected, and the heat exchanger is connected with the test pipeline, the cold feed pipeline and hot water supply pipe
The heat exchanger is passed through after the confluence of road to exchange heat with fuel oil.
8. auxiliary power unit fuel nozzle testboard according to claim 6, which is characterized in that the spray angle is surveyed
Trial assembly, which is set, measures tooling using spray-cone angle comprising central axis and a piece of above radially fixed flabellum on center shaft, institute
The covering of the fan for stating flabellum is equipped with the angle line of corresponding different spray-cone angles, and the angle line is included at least for defining acceptability limit
Two spray-cone angle boundary angles lines.
9. auxiliary power unit fuel nozzle testboard according to claim 6, which is characterized in that the testboard is in L
Type cabinet type structure, the spraying oil sump tank, fuel tank are arranged in the one side of L-type cabinet up and down, and spraying oil sump tank upper end is open, exhausting oil
Mist seperator covers above it such as smoke exhaust ventilator, and spraying oil sump tank front is retractable, and is equipped with transparent windows, the L-type
The another side of cabinet constitutes control cabinet, the testboard control and the positive control panel of the display unit concentrated setting control cabinet
On.
10. auxiliary power unit fuel nozzle testboard according to claim 1, which is characterized in that the flowmeter is adopted
Use turbine flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821770860.3U CN209321289U (en) | 2018-10-30 | 2018-10-30 | A kind of auxiliary power unit fuel nozzle testboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821770860.3U CN209321289U (en) | 2018-10-30 | 2018-10-30 | A kind of auxiliary power unit fuel nozzle testboard |
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| Publication Number | Publication Date |
|---|---|
| CN209321289U true CN209321289U (en) | 2019-08-30 |
Family
ID=67709122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821770860.3U Withdrawn - After Issue CN209321289U (en) | 2018-10-30 | 2018-10-30 | A kind of auxiliary power unit fuel nozzle testboard |
Country Status (1)
| Country | Link |
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| CN (1) | CN209321289U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383847A (en) * | 2018-10-30 | 2019-02-26 | 中国南方航空股份有限公司 | A kind of auxiliary power unit fuel nozzle testboard |
| CN111055051A (en) * | 2019-12-27 | 2020-04-24 | 成立航空技术有限公司 | Device and method for debugging flow of multi-nozzle welding assembly |
-
2018
- 2018-10-30 CN CN201821770860.3U patent/CN209321289U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383847A (en) * | 2018-10-30 | 2019-02-26 | 中国南方航空股份有限公司 | A kind of auxiliary power unit fuel nozzle testboard |
| CN109383847B (en) * | 2018-10-30 | 2024-02-23 | 中国南方航空股份有限公司 | Auxiliary power device fuel nozzle testboard |
| CN111055051A (en) * | 2019-12-27 | 2020-04-24 | 成立航空技术有限公司 | Device and method for debugging flow of multi-nozzle welding assembly |
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