CN104776866B - Flame ionisation detection circuit - Google Patents
Flame ionisation detection circuit Download PDFInfo
- Publication number
- CN104776866B CN104776866B CN201510186045.7A CN201510186045A CN104776866B CN 104776866 B CN104776866 B CN 104776866B CN 201510186045 A CN201510186045 A CN 201510186045A CN 104776866 B CN104776866 B CN 104776866B
- Authority
- CN
- China
- Prior art keywords
- flame
- triode
- power supply
- tie point
- supply unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to a kind of flame ionisation detection circuit, mainly solve the problems, such as that prior art moderate resistance AC influence ability is weak, narrow application range.The present invention is loaded on flame ion probe by using a kind of flame ionisation detection circuit, including signal processing unit, flame detecting unit and power supply unit, the AC power, and flame equivalent resistance is a diode and one 1~10 megaohm of resistant series；AC power, flame, resistance R1~R5 and R11, diode D1~D2 and D5, electric capacity C1~C6 form signal processing unit loop；Dc source, triode Q1~Q3, relay K, diode D3, flame indicator lamp D4, resistance R6~R10 form flame detecting element loop；The technical scheme that signal processing unit loop is connected with the base stage of the triode Q1 in flame detecting element loop preferably solves above mentioned problem, available in flame ionisation detection.
Description
Technical field
The present invention relates to a kind of flame ionisation detection circuit.
Background technology
Current flame detecting technology mainly has thermocouple detection, ultraviolet detection and flame ionisation detection etc..Thermocouple
What detection system mainly detected is high temperature caused by flame combustion, and it has the weakness grown the response time；Ultraviolet flame detection system
The system response time is short, but the interference of the weather condition such as its easy wind-engaging, rain, mist, snow, causes result of detection inaccurate.Flame ion
Detection Techniques are that have unilateral conduction based on flame, by applying certain alternating voltage on flame, in detection circuit
Current signal realizes the judgement of flame.
At present, flame ionisation detection technology has certain application on boiler and household gas range.CN93118568.8 is related to
A kind of burner security personnel and automatic control circuit, especially suitable for liquids and gases fuel range, it, which has, adapts to one or more stoves
The high sensitivity detection circuit of eye, full automatic sparking system, kitchen range are made to have flame-out automatic after-combustion ability and flame-out prevention to forecast
Ability, to catching fire, overheating, spilling water, gas leakage etc. have that extension input can be realized and alarm is held one's breath.To stopping the supple of gas or steam, sebific duct damage, supply
The ability that situations such as gas failure and children play with kitchen range is held one's breath and alarmed when all limited.
But existing flame ionisation detection circuit has that anti-AC signal interference is poor, lacked by the big grade of flame stiffness effect
Point.This patent provides a kind of new flame ionisation detection circuit, can effectively filter the exchange in flame ion electric current
Part, strong antijamming capability, circuit is simple and practical, can be used under various harsh conditions.
The present invention targetedly solves the problem.
The content of the invention
The technical problems to be solved by the invention are that prior art moderate resistance AC influence ability is weak, narrow application range asked
A kind of topic, there is provided new flame ionisation detection circuit.The circuit is used in flame ionisation detection, has anti-AC influence ability
By force, the advantages of applied widely.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of flame ionisation detection circuit, including signal
Processing unit, flame detecting unit and power supply unit, said supply unit include at least four tie points, two of which tie point
AC power is connected, one of tie point connects flame ion probe positive pole, and one of tie point connection flame ion is visited
Pin shell；The AC power is loaded on flame ion probe, and flame equivalent resistance is a diode and one 1~10,000,000
The resistant series in Europe；AC power, flame, resistance R1~R5 and R11, diode D1~D2 and D5, electric capacity C1~C6 form letter
Number processing unit loop；Dc source, triode Q1~Q3, relay K, diode D3, flame indicator lamp D4, resistance R6~
R10 forms flame detecting element loop；Signal processing unit loop and the base stage of the triode Q1 in flame detecting element loop
It is connected；The AC power is 220V, 50Hz, dc source 24V；R1 is 50K Ω, and R2 is that 450K Ω, R3 are 250K Ω, R4
For 50K Ω, R5 is that 10M Ω, R6 are 100 Ω, and R7 is 12K Ω, and R8 is 300K Ω, and R9 is that 10K Ω, R10 are 400 Ω, and R11 is
100KΩ；C1 is that 470 μ f/1KV, C2 are that 0.33 μ f/400V, C3 is that 0.1 μ f/250V, C4 is 47 μ f/35V, C5 100pf/
35V, C6 6.8nf/630V；The first tie point (1) is connected 220V, 50Hz exchange with the second tie point (2) in power supply unit
Power supply, the tie point (3) of power supply unit the 3rd connection flame ion probe positive pole, the tie point (4) of power supply unit the 4th connection flame
Ion probe shell；
(I) when between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th without flame, power supply is single
Open circuit between first 3rd tie point (3) and the tie point (4) of power supply unit the 4th, detection circuit no current pass through sample resistance R5
No-voltage, triode Q1 base currents Ib=0, collector current Ic=0；Triode Q2 base stages are in high level state, three poles
Pipe Q2 collector and emitters turn on, and triode Q2 colelctor electrodes are in low level；Triode Q2 colelctor electrodes and triode Q3 base stages
It is connected, therefore triode Q3 base stages are also at low level state, base current Ib=0, triode Q3 collector and emitters
It is not turned on；Relay K no currents are by the way that flame indicator lamp D4 does not work；
(II) when having flame between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th, due to fire
Flame has unilateral conduction, and detection circuit has direct current by the way that sample resistance R5 produces certain voltage, triode Q1 base stages and hair
Emitter-base bandgap grading turns on, and triode Q1 colelctor electrodes are in low level；Because triode Q1 colelctor electrodes C is connected with triode Q2 base stages, because
This triode Q2 base stages are in low level state, and triode Q2 base stages and emitter stage are not turned on；Triode Q3 base stages and voltage source
VCC connections, in high level state, triode Q8 base stages and emitter stage conducting, produce base current Ib, triode Q3 colelctor electrodes
Turned on emitter stage；Relay K has electric current by the way that flame indicator lamp D4 is bright；
(III)) when generation short circuit between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th or only
During resistance, detection circuit has alternating current by the way that alternating current returns to power supply by electric capacity C1, C2, C3；No current on sample resistance R5
Pass through；With (I), relay K no currents are by the way that indicator lamp D4 does not work；
(IV) when between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th existing flame occur again
When short-circuit, when the resistance of short circuit is less than 100k Ω, the voltage on sample resistance R5 is less than 0.7V, triode Q1 base stages and transmitting
Pole turns on, and with (I), relay K no currents are by the way that indicator lamp D4 does not work；When the resistance of short circuit is more than 100k Ω Europe, sampling electricity
Voltage on resistance R5 is more than 0.7V, triode Q1 base stages and emitter stage conducting, and with (II), relay K has electric current by the way that flame refers to
Show that lamp D4 is bright.
Flame ionisation detection circuit of the present invention, circuit structure is simple and practical, compared to existing flame ionisation detection
Circuit, anti-AC influence ability is strong, all applicable under the conditions of probe insulaion resistance is more than 100k Ω, achieves preferable technology
Effect.
Brief description of the drawings
Fig. 1 is the connection diagram of circuit of the present invention.
Fig. 2 is the power supply unit schematic diagram of circuit of the present invention.
In Fig. 1, Fig. 2,1~4 is power supply unit tie point；R1~R11 is resistance；C1~C6 is electric capacity；D1、D2、D3、D5
For diode；D4 is flame indicator lamp；Q1~Q3 is triode；K is relay；VCC is voltage source.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
Tie point 1 in Fig. 1 in power supply unit is connected 220V, 50Hz AC power with 2.Tie point 3 connect flame from
Sub- probe positive pole, 4 connection flame ion probe cases.
AC power is loaded on flame ion probe, and flame resistance can be equivalent to a diode and a 1-10 million
The resistant series in Europe.220V AC powers, flame, resistance R1 (50K Ω), R2 (450K Ω), R3 (250K Ω), R4 (50K Ω),
R5 (10M Ω), R11 (100K Ω), diode D1, D2, D5, electric capacity C1 (470 μ f/1KV), C2 (0.33 μ f/400V), C3 (0.1
μ f/250V), C4 (47 μ f/35V), C5 (100pf/35V), C6 (6.8nf/630V) composition signal conditioning circuit.
24V dc sources, triode Q1, Q2, Q3, relay K, diode D3, flame indicator lamp D4, resistance R6 (100
Ω), R7 (12K Ω), R8 (300K Ω), R9 (10K Ω), R10 (400 Ω) form flame detecting loop.
(1) breaking between 3 and 4 when between tie point 3 and 4 without flame, detection circuit no current passes through sample resistance
R5 no-voltages, triode Q1 base currents Ib=0, collector current Ic=0.Triode Q2 base stages are in high level state, and three
Pole pipe Q2 collector and emitters turn on, and triode Q2 colelctor electrodes are in low level.Triode Q2 colelctor electrodes and triode Q3 bases
Pole is connected, therefore triode Q3 base stages are also at low level state, base current Ib=0, triode Q3 colelctor electrodes and transmitting
Pole is not turned on.Relay K no currents are by the way that flame indicator lamp D4 does not work.
(2) when having flame between tie point 3 and 4, because flame has unilateral conduction, detection circuit has direct current to lead to
Cross, sample resistance R5 produces certain voltage, and triode Q1 base stages and emitter stage conducting, triode Q1 colelctor electrodes are in low level.
Because triode Q1 colelctor electrodes C is connected with triode Q2 base stages, therefore triode Q2 base stages are in low level state, triode
Q2 base stages and emitter stage are not turned on.Triode Q3 base stages are connected with voltage source VCC, in high level state, triode Q8 base stages
Turned on emitter stage, produce base current Ib, the conducting of triode Q3 collector and emitters.Relay K has electric current to pass through flame
Indicator lamp D4 is bright.
(3) when between tie point 3 and 4 occur short circuit or only resistance when, detection circuit has alternating current to pass through alternating current
Power supply is returned to by electric capacity C1, C2, C3.No current passes through on sample resistance R5.With (1), relay K no currents pass through instruction
Lamp D4 does not work.
(4) when existing flame occurs short-circuit again between tie point 3 and 4, when the resistance of short circuit is less than 100k Ω, sampling
Voltage on resistance R5 is less than 0.7V, triode Q1 base stages and emitter stage conducting, and with (1), relay K no currents pass through instruction
Lamp D4 does not work；When the resistance of short circuit is more than 100k Ω Europe, the voltage on sample resistance R5 is more than 0.7V, triode Q1 base stages with
Emitter stage turns on, and with (2), relay K has electric current by the way that flame indicator lamp D4 is bright.
Claims (1)
1. a kind of flame ionisation detection circuit, including signal processing unit, flame detecting unit and power supply unit, the power supply is single
Member includes at least four tie points, two of which tie point connection AC power, and one of tie point connection flame ion is visited
Pin positive pole, one of tie point connect flame ion probe case；The AC power is loaded on flame ion probe, fire
Flame equivalent resistance is a diode and one 1~10 megaohm of resistant series；AC power, flame, resistance R1~R5 and
R11, diode D1~D2 and D5, electric capacity C1~C6 form signal processing unit loop；Dc source, triode Q1~Q3, after
Electrical equipment K, diode D3, flame indicator lamp D4, resistance R6~R10 form flame detecting element loop；Signal processing unit loop
It is connected with the base stage of the triode Q1 in flame detecting element loop；The AC power is 220V, 50Hz, and dc source is
24V；R1 is 50K Ω, and R2 is 450K Ω, and R3 is 250K Ω, and R4 is 50K Ω, and R5 is that 10M Ω, R6 are 100 Ω, and R7 is 12K Ω,
R8 is 300K Ω, and R9 is that 10K Ω, R10 are 400 Ω, and R11 is 100K Ω；C1 is that 470 μ f/1KV, C2 are 0.33 μ f/400V, C3
It is 47 μ f/35V, C5 100pf/35V, C6 6.8nf/630V for 0.1 μ f/250V, C4；First tie point in power supply unit
(1) 220V, 50Hz AC power are connected with the second tie point (2), the tie point (3) of power supply unit the 3rd connection flame ion is visited
Pin positive pole, the tie point (4) of power supply unit the 4th connection flame ion probe case；
(I) when between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th without flame, power supply unit
Breaking between three tie points (3) and the tie point (4) of power supply unit the 4th, detection circuit no current is by the way that sample resistance R5 is without electricity
Pressure, triode Q1 base currents Ib=0, collector current Ic=0；Triode Q2 base stages are in high level state, triode Q2
Collector and emitter turns on, and triode Q2 colelctor electrodes are in low level；Triode Q2 colelctor electrodes are connected with triode Q3 base stages
Connect, therefore triode Q3 base stages are also at low level state, base current Ib=0, triode Q3 collector and emitters are not led
It is logical；Relay K no currents are by the way that flame indicator lamp D4 does not work；
(II) when having flame between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th, because flame has
There is unilateral conduction, detection circuit has direct current by the way that sample resistance R5 produces certain voltage, triode Q1 base stages and emitter stage
Conducting, triode Q1 colelctor electrodes are in low level；Because triode Q1 colelctor electrodes C is connected with triode Q2 base stages, therefore three
Pole pipe Q2 base stages are in low level state, and triode Q2 base stages and emitter stage are not turned on；Triode Q3 base stages connect with voltage source VCC
Connect, in high level state, triode Q8 base stages and emitter stage conducting, produce base current Ib, triode Q3 colelctor electrodes and hair
Emitter-base bandgap grading turns on；Relay K has electric current by the way that flame indicator lamp D4 is bright；
(III) when short circuit or only resistance occur between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th
When, detection circuit has alternating current by the way that alternating current returns to power supply by electric capacity C1, C2, C3；No current leads on sample resistance R5
Cross；With (I), relay K no currents are by the way that indicator lamp D4 does not work；
(IV) when between the tie point (3) of power supply unit the 3rd and the tie point (4) of power supply unit the 4th existing flame short circuit occurs again
When, when the resistance of short circuit is less than 100k Ω, the voltage on sample resistance R5 is less than 0.7V, and triode Q1 base stages and emitter stage are led
Logical, with (I), relay K no currents are by the way that indicator lamp D4 does not work；When the resistance of short circuit is more than 100k Ω Europe, sample resistance R5
On voltage be more than 0.7V, triode Q1 base stages and emitter stage conducting, with (II), relay K has electric current to pass through flame indicator lamp
D4 is bright.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510186045.7A CN104776866B (en) | 2015-04-20 | 2015-04-20 | Flame ionisation detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510186045.7A CN104776866B (en) | 2015-04-20 | 2015-04-20 | Flame ionisation detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776866A CN104776866A (en) | 2015-07-15 |
| CN104776866B true CN104776866B (en) | 2017-11-10 |
Family
ID=53618478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510186045.7A Active CN104776866B (en) | 2015-04-20 | 2015-04-20 | Flame ionisation detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104776866B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905035B (en) * | 2018-08-29 | 2021-02-26 | 陕西航空电气有限责任公司 | Method for determining internal threshold resistance value of ion flame signal detection device through simulated flame signal |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714122A (en) * | 1980-07-01 | 1982-01-25 | Mitsubishi Electric Corp | Oxygen density detecting apparatus for burner |
| CN2106968U (en) * | 1991-01-30 | 1992-06-10 | 洛阳市涧西中原矿山机械研究所 | Automatic protector for flame ionization gas utensil |
| CN1126812A (en) * | 1994-12-15 | 1996-07-17 | 何建平 | Flame ion detecting ignition controller |
| CN102345878B (en) * | 2010-08-03 | 2014-03-26 | 深圳市合信达控制系统有限公司 | Flame ion current intensity detection and pulse ignition circuit |
| JP2014005979A (en) * | 2012-06-22 | 2014-01-16 | National Institute For Materials Science | High-temperature impedance measuring apparatus |
| CN104035356A (en) * | 2014-06-24 | 2014-09-10 | 佛山三昌五金炉具有限公司 | Ignition control circuit for gas appliance |
-
2015
- 2015-04-20 CN CN201510186045.7A patent/CN104776866B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104776866A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207586360U (en) | A kind of fault arc detection device | |
| CN103293367B (en) | Flame ion current intensity floats the detection method of ground AC power | |
| CN104776866B (en) | Flame ionisation detection circuit | |
| CN201853900U (en) | Power socket device used for electric water heater | |
| CN103792451A (en) | Detection circuit and instrument for relay protective device protective outlet loop | |
| CN103336164B (en) | A kind of circuit that accurately can detect alternating current source flame ion current intensity | |
| CN201028630Y (en) | Flame combustion indicator light | |
| CN104717777A (en) | Human body infrared induction lamp | |
| CN102998573A (en) | Electric arc fault protector inspection device | |
| CN203785809U (en) | Combustible gas temperature detection and alarming circuit | |
| CN110456263A (en) | A kind of relay is adhered detection circuit, device and its detection method | |
| CN206114824U (en) | Low -cost fuse supervisory circuits | |
| WO2021212840A1 (en) | Electric leakage detection circuit, electric leakage protection circuit, and household appliance | |
| CN202693521U (en) | Flame ionization monitor | |
| CN209310049U (en) | A kind of integrated kitchen range igniter safety control circuit | |
| CN104093258A (en) | Fluorescent lamp fault detection automatic power-off device and method thereof | |
| CN104780637B (en) | A kind of control circuit and lighting device | |
| CN203784994U (en) | Circuit capable of accurately detecting combustion and extinguishing of combustible gas | |
| CN203661385U (en) | Fluorescent lamp fault detection automatic power-off device | |
| CN203312639U (en) | Intelligent display and control device used for switch cabinet | |
| CN208333692U (en) | A kind of temperature sensing circuit and electromagnetic cooking appliance of electromagnetic cooking appliance | |
| CN202276330U (en) | Water-boiling automatic powering-off controller for electrothermal cup | |
| CN208997007U (en) | A kind of fan detection system | |
| CN207459718U (en) | A kind of power input control circuit of direct-current inverter welding machine | |
| CN208255688U (en) | A kind of blowout protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. Applicant after: Sinopec Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: Sinopec Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jiedong Inventor after: Bai Yongzhong Inventor after: Zhang Guangwen Inventor after: Yu Anfeng Inventor after: Wang Peng Inventor after: Han Zhongshu Inventor after: Dang Wenyi Inventor before: Zhang Jiedong Inventor before: Yu Anfeng Inventor before: Zhang Guangwen Inventor before: Wang Peng Inventor before: Han Zhongshu Inventor before: Dang Wenyi |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |