CN109458260A - A kind of aero-engine frequency conversion change energy igniter electric discharge triggering holding circuit - Google Patents
A kind of aero-engine frequency conversion change energy igniter electric discharge triggering holding circuit Download PDFInfo
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- CN109458260A CN109458260A CN201811437680.8A CN201811437680A CN109458260A CN 109458260 A CN109458260 A CN 109458260A CN 201811437680 A CN201811437680 A CN 201811437680A CN 109458260 A CN109458260 A CN 109458260A
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- electric discharge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/26—Starting; Ignition
- F02C7/264—Ignition
- F02C7/266—Electric
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The present invention proposes that a kind of aero-engine frequency conversion becomes energy igniter electric discharge triggering holding circuit, including capacitor C7, silicon-controlled Q4 and triode Q3；When being high level to pressure detection signal, capacitor C7 generates sharp pulse signal and triggers silicon-controlled Q4 conducting, and then Q3 is connected, and generates control signal and control prime input circuit is gone to be in an off state all the way, and another way is after 2ms postpones, triggering late-class circuit electric discharge；It is tended to remain on after silicon-controlled Q4 conducting, until frequency control signal becomes low level, silicon-controlled Q4 shutdown after late-class circuit electric discharge, Q3 is turned off therewith, the signal of control prime input circuit becomes low level, the conducting of prime input circuit, and booster circuit is started to work, until energy-storage capacitor both end voltage reaches setting value, it to pressing detection signal that high level is presented, moves in circles, realizes that aero-engine frequency conversion becomes energy igniter and exports according to setpoint frequency.Present invention efficiently solves interference problem, guarantee that the logical order of circuit is correct, to enable the circuitry to work normally.
Description
Technical field
The invention belongs to Aeronautics and Astronautics engine ignition fields, are related to a kind of aero-engine frequency conversion change energy igniter
Electric discharge triggering holding circuit.
Background technique
Traditional aero-engine ignition device is that energy storage energy and discharge frequency are all non-adjustable, or in energy storage energy
In the case where constant, the adjustable control to discharge frequency is realized.
For this purpose, applicant proposed a kind of aircraft engine igniter electrion trigger circuit in 2017
(CN201711096852.5), energy storage energy, discharge frequency all adjustable controls, the circuit block diagram such as Fig. 1 be can be realized, including handed over
It flows booster circuit, energy storage rectifier circuit, detect control circuit, discharge trigger circuit, charge/discharge control circuit, secondary booster electricity to pressure
Road, striking accumulator；
The low-voltage AC of input is mainly increased to the high-voltage alternating that peak-peak is 2700V by AC boosting circuit
Electricity；
Energy storage rectifier circuit, the High Level AC Voltage that AC boosting circuit is generated is after full-wave rectification and resistance current limliting to storage
It can capacitor charging；
Control circuit is detected to pressure, by the way that energy-storage capacitor both ends will be attempted by after high-tension resistive and low resistance series connection,
Take the voltage at low resistance both ends as the non-inverting input terminal of comparator, using reference potential as inverting input terminal, when energy storage electricity
When the voltage at container both ends is higher than set reference voltage, comparator exports high level, passes through light-coupled isolation, level conversion
Afterwards, it is converted into high-level control signal.
Discharge trigger circuit, the circuit are made of integrated trigger circuit, resistance, capacitor etc.；It is defeated that control signal is detected to pressure
Out when high level, through integrated trigger circuit, output control signal, power cutoff input；Low level is exported when detecting signal to pressure
When and in the rising edge of frequency control signal, power input is connected in integrated trigger circuit, output control signal.
Charge/discharge control circuit, the circuit are mainly made of integrated computation circuit, silicon-controlled, pulse transformer, to pressure detection
The control signal of control circuit generates rapidly a sharp pulse signal triggering controlled silicon conducting at the both ends of diffferential capacitor, makes
The capacitor being connected with the primary of pulse transformer is discharged by armature winding, while in the secondary pulse for generating an about 6V
Signal, triggering high-power silicon controlled rectifier conducting, is connected the step-up transformer primary coil in secondary booster circuit.
Secondary booster circuit: the circuit is mainly made of secondary booster transformer, and effect is to increase discharge voltage again
To the voltage of breakdown high pressure sparking plug；
Striking accumulator, the circuit are made of full-wave rectifying circuit, current-limiting resistance and striking energy-storage capacitor.Work as electric discharge
When secondary booster primary is connected in control circuit, the energy release stored in striking energy-storage capacitor makes sparking plug discharge
End is initially formed conduction path, and then is released main energy storage energy, forms high energy electric spark.
Wherein, 4 detailed circuit of discharge trigger circuit as shown in Fig. 2, mainly using integrated circuit 4013 logic function,
According to pressure detection signal output control signal, realize that control prime opens the function of shutdown, rear class electric discharge.But the integrated circuit
Tolerance electromagnetic interference capability is poor, and when the output power of igniter circuit reaches 130W or more, i.e. energy storage reaches 10J or more,
When discharge frequency reaches 10Hz or more, there are larger electromagnetic interferences for the charge and discharge process of main accumulator, make patrolling for integrated circuit
Volume operational performance is impacted, occurs exporting logical relation mistake, chaotic situation, causes output control signal correct defeated
Out, product work compensation is caused even to cause the apparatus overloads such as power supply may.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention proposes a kind of adjustable big for discharge frequency, storage energy
The triggering holding circuit of power igniter circuit control, original integrated trigger circuit is changed to silicon-controlled and low power
The triggering holding circuit of triode composition, efficiently solves interference problem in this way, guarantees that the logical order of circuit is correct, thus
So that frequency conversion is become energy ignition system can work normally under high-power output state, guarantee ignition engine work, and embodiment party
Just, at low cost, strong antijamming capability.
The technical solution of the present invention is as follows:
A kind of aero-engine frequency conversion becomes energy igniter electric discharge triggering holding circuit, it is characterised in that: including electricity
Hold C7, silicon-controlled Q4 and triode Q3；
Outside arrives pressure detection signal input electric discharge and triggers holding circuit, when being high level to pressure detection signal, capacitor C7
It generates a sharp pulse signal and triggers silicon-controlled Q4 conducting；Control Q3 conducting after Q4 conducting；Control signal is generated, signal one is controlled
The prime input circuit of control booster circuit is removed on road, is in an off state prime input circuit, and control signal another way is passed through
After 2ms delay, triggering late-class circuit discharges；
It is tended to remain on after silicon-controlled Q4 conducting, until access electric discharge triggering keeps electricity after late-class circuit electric discharge
The frequency control signal on road becomes low level, and silicon-controlled Q4 shutdown, Q3 is turned off therewith after Q4 shutdown, control prime input circuit
Signal becomes low level, and prime input circuit is connected, and booster circuit is started to work, until energy-storage capacitor both end voltage reaches
Setting value, to pressure detection signal present high level, moved in circles with this, realize aero-engine frequency conversion become can igniter according to
Setpoint frequency output.
Beneficial effect
Original integrated trigger circuit is changed to and is kept with the triggering that silicon-controlled and low power triode forms by the present invention
Circuit efficiently solves interference problem in this way, guarantees that the logical order of circuit is correct, to enable the circuitry to work normally.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1: frequency conversion becomes can igniter functional block diagram；
Fig. 2: igniter electrion trigger circuit schematic diagram；
Fig. 3: improved frequency conversion becomes can igniter functional block diagram；
Fig. 4: improved triggering holding circuit.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to it is used to explain the present invention, and
It is not considered as limiting the invention.
It is as shown in Figure 3 that the improved frequency conversion of the present invention becomes energy firing circuit functional block diagram.Former discharge trigger circuit is improved
Holding circuit is triggered for electric discharge.
Improved electric discharge triggers holding circuit, builds circuit, comprehensive utilization to pressure inspection using with switching function device
Signal and frequency control signal are surveyed as the condition of control prime shutdown conducting rear class electric discharge triggering to realize control.It is detected to pressure
When signal is high level, control prime input shutdown, and discharge after making the signal delay 2ms of charge/discharge control circuit, electric discharge terminates
Afterwards, which keeps, until trigger circuit output leads prime input circuit when frequency control signal jump is low level
Logical signal.Original integrated circuit is avoided when being low level to pressure detection signal, electromagnetic signal interference when due to electric discharge,
Lead to the case where controlling signal logic disorder.
Improved electric discharge triggering holding circuit requires the duty of frequency control signal bigger, the both ends of energy-storage capacitor
Voltage must be charged to target voltage values between the high period of frequency control signal.
The low and high level that improved electric discharge triggering holding circuit no longer relies on merely to pressure detection signal realizes that control is opened
It closes, has the function of signal holding, becoming frequency conversion can igniter energy in the case where energy and frequency all increase, output power is high
Enough normal reliable work.
Improved basic circuit diagram is as shown in Fig. 4.
Its working principle is that: the low-voltage AC of input is input to H.V. step up transformer T1's by ON-OFF control circuit
Primary, when ON-OFF control circuit receives open signal, the low-voltage AC of input is converted to high pressure and handed over by high-tension transformer
Galvanic electricity after rectified circuit, charges to energy-storage capacitor C1, while being carried out by voltage of the sample circuit to the capacitor both ends
Detection, when the voltage reaches the voltage of energy storage control circuit defined, comparator LM139 export high level, by optocoupler every
From rear, triode Q1 is connected, generates high level at the both ends R15 and C8, generates a sharp pulse letter quickly at the end small capacitances C7
After number triggering Q4, Q4 conducting, Q3 conducting goes triggering late-class circuit to carry out all the way after R14 again after delayed circuit delay 2ms
Electric discharge；Another way goes the front stage circuits of control transformer, is at off-state.Q4 Yi Dan conducting after will constant conduction,
When the low level of frequency control signal arrives, Q4 can just be turned off, and Q3 is turned off after Q4 shutdown, control transformer front stage circuits
Signal becomes low level, after logic circuit level conversion, transformer front stage circuits is made to be initially located in working condition.Such circuit
It will require to carry out work in cycles according to the discharge frequency of setting.
The technological core of the invention is: to pressure detection signal be high level when, generate a point quickly at the end small capacitances C7
Pulse signal triggers Q4, and after Q4 conducting, Q3 conducting is at disconnected at this point, control signal removes control prime input circuit all the way
Open state, meanwhile, another way enters charge/discharge control circuit after R14, and triggering late-class circuit discharges；Q4 is once after conducting
It can tend to remain on, when the low level of frequency control signal arrives, Q4 can just be turned off, and Q3 is turned off therewith after Q4 shutdown,
The signal of control prime input circuit becomes low level, and igniter front stage circuits are connected, and booster circuit is started to work, until
Energy-storage capacitor both end voltage reaches setting value, to pressure detection signal present high level, moved in circles with this, realize product according to
The target of setpoint frequency output services.
Frequency conversion in Fig. 4 in black box diagram become can igniter electric discharge triggering holding circuit, by triode Q3, resistance R9,
Resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, capacitor C6, C7, silicon-controlled Q4 composition.
When being high level to pressure detection signal, a sharp pulse signal is generated quickly at the end capacitor C7 and triggers silicon-controlled Q4
Conducting, after Q4 conducting, Q3 conducting is at off-state, together at this point, control signal removes control prime input circuit all the way
When, another way enters charge/discharge control circuit after R14, and triggering late-class circuit discharges.In late-class circuit electric discharge, prime is defeated
Entering circuit will ensure to complete switch off, therefore cut-off signals must have regular hour width, just can guarantee that late-class circuit is reliably put
Electricity；Silicon-controlled Q4 Yi Dan conducting after, due to its it is silicon-controlled itself characteristic will maintenance on state, until conducting electric current
It maintains just to turn off when electric current less than it.Using this feature, arrived in circuit design using the low level of frequency control signal
When, silicon-controlled Q4 can just be turned off, and Q3 is turned off therewith after Q4 shutdown, and the signal of control prime input circuit becomes low level, be made a little
Fiery device front stage circuits conducting, booster circuit is started to work, until energy-storage capacitor both end voltage reaches setting value, to pressure detection
High level is presented in signal, is moved in circles with this, realizes product according to the target of setpoint frequency output services.
The product becomes in frequency conversion and can be implemented on ignition system, and is verified.It has produced 2 frequency conversions and has become energy
Igniter (model DHZ-230W in factory), and passed through performance test in factory, one gives over to shop test, 1 and delivers master
Machine uses.See Table 1 for details for product indices check and acceptance result.
1 frequency conversion of table becomes can igniter check and acceptance result
Verified to be greater than 130W in output power, when energy storage is greater than 10J, circuit logic function is normal, can be reliable and stable
Work.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (1)
1. a kind of aero-engine frequency conversion becomes can igniter electric discharge triggering holding circuit, it is characterised in that: including capacitor C7, can
Control silicon Q4 and triode Q3；
Outside is to pressure detection signal input electric discharge triggering holding circuit, and when being high level to pressure detection signal, capacitor C7 is generated
One sharp pulse signal triggers silicon-controlled Q4 conducting；Control Q3 conducting after Q4 conducting；Control signal is generated, control signal is gone all the way
The prime input circuit for controlling booster circuit, is in an off state prime input circuit, and control signal another way is prolonged by 2ms
It lags, triggering late-class circuit discharges；
It is tended to remain on after silicon-controlled Q4 conducting, until after late-class circuit electric discharge, access electric discharge triggering holding circuit
Frequency control signal becomes low level, and silicon-controlled Q4 shutdown, Q3 is turned off therewith after Q4 shutdown, controls the signal of prime input circuit
Become low level, prime input circuit is connected, booster circuit is started to work, until energy-storage capacitor both end voltage reaches setting
Value is moved in circles to pressing detection signal that high level is presented with this, realizes that aero-engine frequency conversion becomes energy igniter according to setting
Rate-adaptive pacemaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437680.8A CN109458260B (en) | 2018-11-28 | 2018-11-28 | Discharge trigger holding circuit of variable-frequency and variable-energy ignition device of aircraft engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437680.8A CN109458260B (en) | 2018-11-28 | 2018-11-28 | Discharge trigger holding circuit of variable-frequency and variable-energy ignition device of aircraft engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109458260A true CN109458260A (en) | 2019-03-12 |
| CN109458260B CN109458260B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811437680.8A Active CN109458260B (en) | 2018-11-28 | 2018-11-28 | Discharge trigger holding circuit of variable-frequency and variable-energy ignition device of aircraft engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196390A (en) * | 2019-06-28 | 2019-09-03 | 深圳市元征科技股份有限公司 | A kind of detection method and its relevant apparatus of circuit |
| CN110925100A (en) * | 2019-12-04 | 2020-03-27 | 四川泛华航空仪表电器有限公司 | Variable-energy variable-frequency ignition device |
| CN112627987A (en) * | 2020-12-11 | 2021-04-09 | 陕西航空电气有限责任公司 | Main and boost integrated ignition device circuit with discharge frequency feedback |
| CN112727659A (en) * | 2021-01-07 | 2021-04-30 | 深圳市健科电子有限公司 | Ignition coil's high frequency protection circuit |
| CN114233479A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Control method of voltage-controlled oscillator of aviation ignition circuit |
| CN114320610A (en) * | 2021-12-13 | 2022-04-12 | 陕西航空电气有限责任公司 | Alternating-current energy-conversion ignition circuit and energy conversion method for aero-generator |
| CN114856881A (en) * | 2022-04-20 | 2022-08-05 | 中国航发沈阳发动机研究所 | Self-diagnosis technology design method and system for aviation ignition system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196390A (en) * | 2019-06-28 | 2019-09-03 | 深圳市元征科技股份有限公司 | A kind of detection method and its relevant apparatus of circuit |
| CN110925100A (en) * | 2019-12-04 | 2020-03-27 | 四川泛华航空仪表电器有限公司 | Variable-energy variable-frequency ignition device |
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| CN112627987A (en) * | 2020-12-11 | 2021-04-09 | 陕西航空电气有限责任公司 | Main and boost integrated ignition device circuit with discharge frequency feedback |
| CN112627987B (en) * | 2020-12-11 | 2023-09-29 | 陕西航空电气有限责任公司 | Main and boosting integrated ignition device circuit with discharging frequency feedback |
| CN112727659A (en) * | 2021-01-07 | 2021-04-30 | 深圳市健科电子有限公司 | Ignition coil's high frequency protection circuit |
| CN112727659B (en) * | 2021-01-07 | 2022-08-02 | 深圳市健科电子有限公司 | Ignition coil's high frequency protection circuit |
| CN114233479A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Control method of voltage-controlled oscillator of aviation ignition circuit |
| CN114320610A (en) * | 2021-12-13 | 2022-04-12 | 陕西航空电气有限责任公司 | Alternating-current energy-conversion ignition circuit and energy conversion method for aero-generator |
| CN114856881A (en) * | 2022-04-20 | 2022-08-05 | 中国航发沈阳发动机研究所 | Self-diagnosis technology design method and system for aviation ignition system |
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