CN209027795U - A kind of engine testsand gas handling system - Google Patents
A kind of engine testsand gas handling system Download PDFInfo
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- CN209027795U CN209027795U CN201821618614.6U CN201821618614U CN209027795U CN 209027795 U CN209027795 U CN 209027795U CN 201821618614 U CN201821618614 U CN 201821618614U CN 209027795 U CN209027795 U CN 209027795U
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Abstract
A kind of engine testsand gas handling system, including supply source, temperature simulation unit and boiler-plate；Supply source includes fuel delivery source, oxygen supply source, engine charge supply source and alcohol supply source；Temperature simulation unit includes tube body and shell, and it is first medium channel in tube body, the space between the outer wall of tube body and the inner wall of shell forms second medium channel that tube body, which is located at enclosure interior,；It is located in boiler-plate by spreadsheet engine；Fuel delivery source is connected to by pipeline with by spreadsheet engine, oxygen supply source and engine charge supply source pass through pipeline respectively and are connected to the entrance in second medium channel, the outlet in second medium channel is connected to by pipeline with by the air inlet of spreadsheet engine, and alcohol supply source is connected to by pipeline with the entrance in first medium channel after igniter.
Description
Technical field
The utility model relates to test measurement technical field, especially a kind of engine testsand gas handling system.
Background technique
Aero-engine need to do altitude simulation test on ground before being taken a flight test, when engine test, it is desirable that one group into
Gas parameter, including inlet total pressure, Induction air flow, air inlet oxygen content, inlet total temperature, engine oil oil mass, referred to as into
Gaseity point, at the same reach setting value and stablize after, record its performance and parameter or examine its performance, available engine test bay
Technology, there is no mature technology for engine charge simulation, when reach stable state also without accurate simultaneously for emulation mode
Theoretical determination method, cause test simulation effect poor, the test period is long, and at high cost, wasting of resources situation is serious.
Summary of the invention
The technology of the utility model solves the problems, such as: overcome the deficiencies of the prior art and provide a kind of engine testsand into
Gas system.
The technical solution of the utility model is: a kind of engine testsand gas handling system, including supply source, temperature mould
Quasi-simple member and boiler-plate；Supply source includes fuel delivery source, oxygen supply source, engine charge supply source and alcohol supply source；
Temperature simulation unit includes tube body and shell, and tube body is located at enclosure interior, is first medium channel in tube body, the outer wall of tube body with
Space between the inner wall of shell forms second medium channel；It is located in boiler-plate by spreadsheet engine；Fuel delivery source passes through pipe
Road is connected to by spreadsheet engine, and oxygen supply source and engine charge supply source pass through entering for pipeline and second medium channel respectively
The outlet of mouth connection, second medium channel is connected to by pipeline with by the air inlet of spreadsheet engine, and alcohol supply source is by lighting a fire
It is connected to by pipeline with the entrance in first medium channel after device.
Further, it is connected to fuel delivery source and is provided with engine fuel supply flow rate tune on the pipeline of spreadsheet engine
It saves valve and engine fuel supplies shut-off valve.
Further, oxygen supply flow tune is provided on the pipeline of connection oxygen supply source and the entrance in second medium channel
Save valve and oxygen supply shut-off valve.
Further, engine is provided on the pipeline of connection engine charge supply source and the entrance in second medium channel
Air inlet supply pressure regulating valve.
Further, alcohol supply flow rate is provided on the pipeline of connection alcohol supply source and the entrance in first medium channel
Regulating valve and alcohol supply shut-off valve, and the outlet in first medium channel is in communication with the outside.
The utility model compared with prior art the advantages of be:
1, the engine testsand gas handling system of the utility model passes through engine charge supply source simulated engine air inlet
Flow, inlet total pressure, meanwhile, it is engine charge progress oxygenating by oxygen supply source and is sent out by temperature simulation unit simulation
The intake air temperature of motivation realizes the real simulation of engine charge, and structure is simple, and simulation precision is high.
2, alcohol supply source is arranged in the engine testsand gas handling system of the utility model, by igniter by alcohol point
Combustion generates heat and exchanges heat in temperature simulation unit with engine charge, realizes the adjusting of Engine Inlet Temperature.
3, the engine testsand gas handling system of the utility model realizes joint supply source by the way that various valves are arranged
Flow and pressure adjustable, and then realize the simulation of multimode point.
Detailed description of the invention
Fig. 1 is the engine testsand air intake system structure schematic diagram of the utility model.
Fig. 2 is the partial structural diagram of the temperature simulation unit of the engine testsand gas handling system of the utility model.
Fig. 3 is the application method flow chart of the engine testsand gas handling system of the utility model.
Specific embodiment
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection ", " abutting " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
A kind of engine testsand gas handling system is used for engine high-altitude multimode point air inlet simulation test, the shape
The inlet condition of state point includes engine charge stagnation pressure, Induction air flow, air inlet oxygen ingredient, inlet total temperature, engine oil
Oil mass.
The engine testsand gas handling system includes supply source, temperature simulation unit 200 and boiler-plate 300.
Supply source includes fuel delivery source 110, oxygen supply source 120, engine charge supply source 130 and alcohol supply source
140；The temperature simulation unit includes tube body 210 and shell 220, and the tube body 210 is located inside the shell 220, described
It is first medium channel in tube body 210, the space between the outer wall of the tube body 210 and the inner wall of the shell 220 forms the
Second medium channel；When the temperature simulation unit 200 works, first medium circulates in first medium channel, and second medium exists
It circulates in second medium channel, first medium temperature is higher than second medium, and the first medium and second medium pass through the pipe
The tube wall of body 210 realizes heat exchange.
It is located in the boiler-plate 300 by spreadsheet engine 400.
The fuel delivery source 110 is connected to described by spreadsheet engine 400 by pipeline, 120 He of oxygen supply source
The engine charge supply source 130 is connected to by pipeline with the entrance in second medium channel respectively, and second medium channel goes out
Mouth is connected to by pipeline with the air inlet by spreadsheet engine 400, to provide the engine charge of simulation by spreadsheet engine 400
Flow, inlet total pressure and oxygen content；The alcohol supply source 140 passes through pipeline and first medium channel after igniter
Entrance connection, the outlet in first medium channel are in communication with the outside, and alcohol is lighted burning and generates heat in the temperature by igniter
It exchanges heat in analogue unit 200 with the second medium in second medium channel to adjust the temperature of the second medium in second medium channel
Degree, to realize that Engine Inlet Temperature is simulated, the engine charge simulation of the utility model is true, and precision is high, and structure letter
It is single.
It is connected to the fuel delivery source 110 and is provided with engine fuel supply on the pipeline of spreadsheet engine 400 with described
Flow control valve 510 is connected on the oxygen supply source 120 and the pipeline of the entrance in the second medium channel and aerobic confession is arranged
To flow control valve 530, it is connected on the engine charge supply source 130 and the pipeline of the entrance in second medium channel and is provided with
Engine charge supply pressure regulating valve 550 is connected on the pipeline of the entrance in the alcohol supply source 140 and first medium channel
It is provided with alcohol supply flow rate regulating valve 560, to realize the parameter regulation of each supply source, meets the simulation of multimode point.
Preferably, the engine testsand includes engine fuel supply shut-off valve 520,540 He of oxygen supply shut-off valve
Alcohol supplies shut-off valve 570, and engine fuel supply shut-off valve 520 setting is being connected to the fuel delivery source 110 and institute
It states by the pipeline of spreadsheet engine 400；The oxygen supply shut-off valve 540 setting be connected to the oxygen supply source 120 with it is described
On the pipeline of the entrance in second medium channel；Alcohol supply shut-off valve 570 setting be connected to the alcohol supply source 140 with
On the pipeline of the entrance in first medium channel.In the use process of engine testsand, the engine fuel supply stream is opened
The engine fuel supply shut-off valve 520 is opened before adjustable valve 510, is opened before opening the oxygen supply flow control valve 530
Oxygen supply shut-off valve 540 is opened, opens the alcohol supply shut-off valve 570 before opening the alcohol supply flow rate regulating valve 560；It closes
The engine fuel supply shut-off valve 520 is closed after closing the engine fuel supply flow rate regulating valve 510, closes the oxygen
Oxygen supply shut-off valve 540 is closed after supply flow rate regulating valve 530, closes institute after closing the alcohol supply flow rate regulating valve 560
Alcohol supply shut-off valve 570 is stated, to guarantee safety of the test bay under non-experimental state.
The application method of the engine testsand gas handling system, includes the following steps:
S100), engine charge stagnation pressure and oxygen content are adjusted
Engine charge supply pressure regulating valve and oxygen are adjusted according to the inlet total pressure of the first emulation mode point and oxygen content
Supply flow rate regulating valve makes the stagnation pressure and oxygen content and the first emulation mode point of the second medium by second medium channel outlet
The inlet total pressure of engine is identical with oxygen content.
S200), engine charge total temperature is adjusted
Alcohol supply flow rate regulating valve and initial igniter are adjusted according to the inlet total temperature of the first emulation mode point, lights wine
Essence makes alcohol burn, and the alcohol of burning exchanges heat in the second medium in first medium channel and second medium channel, makes by second
The total temperature of the second medium of medium channel outlet is identical as the inlet total temperature of the first emulation mode point engine；
S210), alcohol supply flow rate regulating valve, starting are adjusted according to the highest operating condition value that temperature simulation unit can bear
Igniter, lighting alcohol makes alcohol burn, and the alcohol of burning changes in first medium channel and the second medium in second medium channel
Heat；
S220), state to the temperature simulation unit of step S310 is kept to enter steady-working state；
S230), according in the first emulation mode point, the second medium total temperature of second medium channel outlet, second medium leads to
The quality of second medium in road, the specific heat at constant pressure of second medium, inboard wall of tube body convection transfer rate, the inner wall of entire tube body
It is long-pending, the quality of first medium in first medium channel, the specific heat at constant pressure of first medium, tube wall convection transfer rate, entirely
The outer wall area of tube body and the second medium total temperature of second medium feeder connection, determine the supplying temperature of first medium；
S240), alcohol supply flow rate regulating valve is adjusted, by the first medium state in first medium channel by with temperature mould
The highest operating condition value supply that quasi-simple member can bear is adjusted to the predetermined value supply according to the first simulation test state point；
S250), keep the first medium in first medium channel according to the predetermined value of the first simulation test state point of experiment
Supply state to temperature simulation unit enters steady-working state, at this point, the second medium by second medium channel outlet
Total temperature is identical as the inlet total temperature of the first emulation mode point engine.
S300), engine charge stagnation pressure is adjusted
Engine charge supply pressure regulating valve is adjusted according to the inlet total pressure of the first emulation mode point, makes to be situated between by second
The stagnation pressure of the second medium of matter channel outlet is identical as the inlet total pressure of the first emulation mode point engine.
S400), engine ignition
Engine fuel supply flow rate regulating valve is adjusted according to the fuel demand amount of engine the first emulation mode point, makes to fire
The fuel oil of oily supply source supply is identical as the fuel demand amount of engine the first emulation mode point, and engine ignition carries out first
The intake simulation of emulation mode point is tested to the state point intake simulation off-test.
S500), the simulation test of N emulation mode point
Oxygen supply flow control valve, engine charge supply pressure regulating valve, alcohol supply flow rate regulating valve are adjusted respectively
With engine fuel supply flow rate regulating valve, make the stagnation pressure, total temperature and oxygen content of the second medium of second medium channel outlet with
Inlet total pressure, the total temperature of N emulation mode point engine are identical with oxygen content, and the fuel oil and N of fuel delivery source supply are simulated
The fuel demand of state point engine is identical；Wherein, N >=2 start engine nth state point air inlet simulation test to the state
Point air inlet simulation test terminates.
S510), oxygen supply flow control valve is adjusted, the oxygen content and N of the second medium of second medium channel outlet are made
The oxygen content of emulation mode point engine is identical；
S520), according in N emulation mode point, the second medium total temperature of second medium channel outlet, second medium channel
The quality of interior second medium, the specific heat at constant pressure of second medium, inboard wall of tube body convection transfer rate, the inner wall area of entire tube body,
The quality of first medium in first medium channel, the specific heat at constant pressure of first medium, tube wall convection transfer rate, entire tube body
Outer wall area and second medium feeder connection second medium total temperature, determine the supplying temperature of first medium；
S530), alcohol supply flow rate regulating valve is adjusted, by the first medium state in first medium channel by the first simulation
The predetermined value supply of trystate point is adjusted to the predetermined value supply according to N simulation test state point；
S540), the first medium in first medium channel is kept to supply according to the predetermined value of experiment N simulation test state point
Enter steady-working state to state to temperature simulation unit, at this point, the second medium by second medium channel outlet is total
The inlet total temperature of Wen Yu N emulation mode point engine is identical；
S550), according to the inlet total pressure of N emulation mode point adjust engine charge supply pressure regulating valve, make by
The stagnation pressure of the second medium of second medium channel outlet is identical as the inlet total pressure of N emulation mode point engine；
S560), engine fuel supply flow rate is adjusted according to the fuel demand amount of engine N emulation mode point to adjust
Valve, the fuel oil for supplying fuel delivery source is identical as the fuel demand amount of engine N emulation mode point, starts engine N
State point intake simulation is tested to the state point intake simulation off-test.
S600), step S500 is repeated until after all emulation mode experimental tests, engine misses close engine
Fuel delivery flow control valve, oxygen supply flow control valve, engine charge supply pressure regulating valve and alcohol supply flow rate tune
Save valve.
Preferably, the highest operating condition value that temperature simulation unit can bear is first Jie that temperature simulation unit can bear
Maximum pressure, maximum temperature and the maximum flow of matter；The parameter of the predetermined value of simulation test state point includes medium inlet and goes out
The pressure of mouth, the flow of medium and the temperature of medium.
Preferably, in step S220, state to the temperature simulation unit of step S210 is kept to enter steady-working state, institute
The time needed is T1；Keep the first medium in first medium channel according to the first simulation test state point of experiment in step S250
Predetermined value supply state to temperature simulation unit enter steady-working state, the required time is T2；It is kept in step S540
First medium in first medium channel is according to the predetermined value supply state of experiment N simulation test state point to temperature simulation
Unit enters steady-working state, and the required time is TN；
T1, T2And TNEnter steady-working state calculation formula according to temperature simulation unit to determine；Temperature simulation unit into
Enter steady-working state calculation formula are as follows:
In formula: TxEnter the time of steady-working state, unit s for temperature simulation unit；M is the matter of entire tube body
Amount, unit kg are known quantity；cmpFor the specific heat at constant pressure of tube body, unit J/kgK is known quantity；hhFor inboard wall of tube body pair
The coefficient of heat transfer is flowed, unit is W/ (m2It K), is known quantity；AsiFor the inner wall area of entire tube body, unit m2, it is known quantity；
mhFor the quality of the first medium in first medium channel, unit kg is known quantity；cphFor the level pressure ratio of first medium
Heat, unit J/kgK are known quantity；hcFor tube wall convection transfer rate, unit is W/ (m2It K), is known quantity；
AseFor the outer wall area of entire tube body, unit m2, it is known quantity；mcFor the matter of the second medium in second medium channel
Amount, unit kg are known quantity；cpcFor the specific heat at constant pressure of second medium, unit J/kgK is known quantity.
Preferably, step S230 is according in the first emulation mode point, the second medium total temperature of second medium channel outlet, and
The quality of second medium in second medium channel, the specific heat at constant pressure of second medium, inboard wall of tube body convection transfer rate, entire tube body
Inner wall area, the quality of first medium, the specific heat at constant pressure of first medium, tube wall heat convection system in first medium channel
Number, the outer wall area of entire tube body and the second medium total temperature of second medium feeder connection, determine the supplying temperature of first medium,
At this point, the supplying temperature of first medium is Thi1；
In step S520, according in N emulation mode point, the second medium total temperature of second medium channel outlet, second is situated between
The quality of second medium in matter channel, the specific heat at constant pressure of second medium, inboard wall of tube body convection transfer rate, the inner wall of entire tube body
Area, the quality of first medium, the specific heat at constant pressure of first medium, tube wall convection transfer rate are whole in first medium channel
The outer wall area of a tube body and the second medium total temperature of second medium feeder connection, determine the supplying temperature of first medium, at this point,
The supplying temperature of first medium is ThiN；
Thi1And ThiNDetermined according to temperature simulation unit hot-fluid input temp formula；Temperature simulation unit hot-fluid input temperature
Spend formula are as follows:
In formula:
ThixFor the supplying temperature of first medium, unit K；TcoIt is single for the second medium total temperature of second medium channel outlet
Position is K, is known quantity；mcFor the quality of second medium in second medium channel, unit kg is known quantity；cpcFor second medium
Specific heat at constant pressure, unit J/kgK, be known quantity；hhFor inboard wall of tube body convection transfer rate, unit is W/ (m2K), it is
Known quantity；AsiFor the inner wall area of entire tube body, unit m2, it is known quantity；mhFor first medium in first medium channel
Quality, unit kg are known quantity；cphFor the specific heat at constant pressure of first medium, unit J/kgK is known quantity；hcFor tube body
Outer wall convection transfer rate, unit are W/ (m2It K), is known quantity；AseFor the outer wall area of entire tube body, unit m2, it is
Known quantity；TciFor the second medium total temperature of second medium feeder connection, unit K is known quantity.
Preferably, it when carrying out engine charge simulation test, is under flying height environmental pressure by spreadsheet engine, it can be with
Pressure in boiler-plate is extracted using air-extractor, it is preferable that air-extractor is vacuum tank or injector.
The engine testsand gas handling system of the utility model is made in addition to the advantageous effects mentioned before
There are following advantageous effects with method:
1, using first adjusting inlet total pressure and oxygen content, then inlet total temperature is adjusted, then after accurate adjustment inlet total pressure, oil-feeding points
The mode of fire, adjustment speed is fast, saves the regulating time of test bay engine charge simulation, reduces experimentation cost, avoid
Energy waste.
2, in the use process of temperature simulation unit, it is creative on startup, can first be held using temperature simulation unit
The highest operating condition value received inputs thermal current to heat exchanger, so that the inner tube of temperature simulation unit is operated at full capacity, with most fast speed
It warms up, it is fast that tube body temperature promotes speed, uniformity of temperature profile, then is adjusted to test predetermined value by full load condition, into steady
Determine the working condition time and substantially shortens.
3, in the use process of temperature simulation unit, pass through the quasi- to data and curves of a large amount of test data and creativeness
It closes, it is determined that the temperature simulation unit of high accuracy enters steady-working state calculation formula, being capable of accurate temperature simulation
Unit enters the time of steady-working state, substantially shortens test period, reduces experimentation cost, avoids energy waste.
4, in the use process of temperature simulation unit, pass through the quasi- to data and curves of a large amount of test data and creativeness
It closes, it is determined that the temperature simulation unit hot-fluid of high accuracy inputs calculation formula, the temperature simulation unit heat that can accurately determine
Input temp is flowed, substantially shortens test period, reduces experimentation cost, avoid energy waste.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (5)
1. a kind of engine testsand gas handling system, which is characterized in that including supply source, temperature simulation unit and boiler-plate；
Supply source includes fuel delivery source, oxygen supply source, engine charge supply source and alcohol supply source；
Temperature simulation unit includes tube body and shell, and tube body is located at enclosure interior, is first medium channel in tube body, tube body it is outer
Space between wall and the inner wall of shell forms second medium channel；
It is located in boiler-plate by spreadsheet engine；
Fuel delivery source is connected to by pipeline with by spreadsheet engine, and oxygen supply source and engine charge supply source pass through pipe respectively
Road is connected to the entrance in second medium channel, and the outlet in second medium channel is connected by pipeline with by the air inlet of spreadsheet engine
Logical, alcohol supply source is connected to by pipeline with the entrance in first medium channel after igniter.
2. engine testsand gas handling system according to claim 1, it is characterised in that: connection fuel delivery source and subject
Engine fuel supply flow rate regulating valve and engine fuel supply shut-off valve are provided on the pipeline of engine.
3. engine testsand gas handling system according to claim 1, it is characterised in that: connection oxygen supply source and second
Oxygen supply flow control valve and oxygen supply shut-off valve are provided on the pipeline of the entrance of medium channel.
4. engine testsand gas handling system according to claim 1, it is characterised in that: connection engine charge supply source
With engine charge supply pressure regulating valve is provided on the pipeline of the entrance in second medium channel.
5. engine testsand gas handling system according to claim 1, it is characterised in that: connection alcohol supply source and first
Alcohol supply flow rate regulating valve and alcohol supply shut-off valve are provided on the pipeline of the entrance of medium channel, first medium channel
Outlet is in communication with the outside.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109141894A (en) * | 2018-10-05 | 2019-01-04 | 北京航天三发高科技有限公司 | A kind of engine testsand gas handling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109141894A (en) * | 2018-10-05 | 2019-01-04 | 北京航天三发高科技有限公司 | A kind of engine testsand gas handling system |
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