CN203797698U - Boiler flame detector - Google Patents
Boiler flame detector Download PDFInfo
- Publication number
- CN203797698U CN203797698U CN201420213913.7U CN201420213913U CN203797698U CN 203797698 U CN203797698 U CN 203797698U CN 201420213913 U CN201420213913 U CN 201420213913U CN 203797698 U CN203797698 U CN 203797698U
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- CN
- China
- Prior art keywords
- circuit
- power supply
- resistance
- boiler
- utility
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Abstract
The utility model relates to a boiler flame detector comprising a power supply connected with two circuits in parallel. A bidirectional thyristor is arranged in the first circuit; a photosensitive resistor, a resistor and a capacitor are serially connected into the second circuit; the resistor and the capacitor are connected with one end of the bidirectional thyristor; the other end of the bidirectional thyristor is communicated with the bidirectional thyristor; one end of the first circuit and one end of the second circuit are jointly connected with a relay coil which is communicated with the power supply. The boiler flame detector with the photosensitive resistor has the advantages that failure of any element causes no burnout of other elements, setting is simple and system stability is greatly enhanced.
Description
Technical field
The utility model relates to a kind of detector for boiler flame.
Background technology
Original flame detection circuit adopts resistance, electric capacity and triode to form, component parameter slightly change will cause trigger unstable.In addition because power supply is alternating current 220V, once electric capacity fault will cause most of element to burn, at all cannot the original components and parts of identification.
Summary of the invention
The purpose of this utility model is in order to overcome above deficiency, and a kind of detector for boiler flame of simple in structure, good stability is provided.
The purpose of this utility model is achieved through the following technical solutions: a kind of detector for boiler flame, comprise power supply, power supply is parallel with two circuit, in the first circuit, be provided with bidirectional triode thyristor, in second circuit, be in series with photo resistance, resistance, electric capacity, between resistance and electric capacity, be connected with one end of bidirectional trigger diode, the other end of bidirectional trigger diode communicates with bidirectional triode thyristor, one end of the first circuit and one end of second circuit are connected with relay coil jointly, and relay coil communicates with power supply.
Further improvement of the utility model is: photo resistance is in series with the potentiometer of current limliting.
Further improvement of the utility model is: the operation principle of detector for boiler flame is: in the time that this device detects that boiler has flame, the resistance of photo resistance starts to reduce, bidirectional trigger diode triggering and conducting, bidirectional triode thyristor triggering and conducting, relay coil obtains electric and output switch amount signal, ignition of the boiler success; In the time that this device detects that boiler does not have flame, the resistance of photo resistance starts to increase, and bidirectional trigger diode becomes off-state, and bidirectional triode thyristor becomes off-state, and relay coil must not be electric, no-output switching value signal, ignition of the boiler failure.
The utility model compared with prior art has the following advantages: the utility model adopts photo resistance, and any one element fault can not cause burning of other elements, arranges simply, has greatly strengthened the stability of system.
brief description of the drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is workflow diagram of the present utility model;
Number in the figure: 1-power supply, 2-bidirectional triode thyristor, 3-photo resistance, 4-resistance, 5-electric capacity, 6-bidirectional trigger diode, 7-relay coil, 8-potentiometer.
detailed description of the invention:
in order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment only, for explaining the utility model, does not form the restriction to the utility model protection domain.
As Fig. 1 shows a kind of embodiment of the utility model detector for boiler flame, comprise power supply 1, power supply 1 is parallel with two circuit, in the first circuit, be provided with bidirectional triode thyristor 2, in second circuit, be in series with photo resistance 3, resistance 4, electric capacity 5, photo resistance 3 is in series with the potentiometer 8 of current limliting, between resistance 4 and electric capacity 5, be connected with one end of bidirectional trigger diode 6, the other end of bidirectional trigger diode 6 communicates with bidirectional triode thyristor 2, one end of the first circuit and one end of second circuit are connected with relay coil 7 jointly, and relay coil 7 communicates with power supply 1.
As shown in Figure 2, the operation principle of detector for boiler flame is: in the time that this device detects that boiler has flame, the resistance of photo resistance starts to reduce, bidirectional trigger diode 6 triggering and conducting, bidirectional triode thyristor 2 triggering and conducting, relay coil 7 obtains electric and output switch amount signal, ignition of the boiler success; In the time that this device detects that boiler does not have flame, the resistance of photo resistance starts to increase, 6 one-tenth off-states of bidirectional trigger diode, and 2 one-tenth off-states of bidirectional triode thyristor, relay coil 7 must not be electric, no-output switching value signal, ignition of the boiler failure.
Claims (2)
1. a detector for boiler flame, comprise power supply (1), it is characterized in that: described power supply (1) is parallel with two circuit, in the first circuit, be provided with bidirectional triode thyristor (2), in second circuit, be in series with photo resistance (3), resistance (4), electric capacity (5), between described resistance (4) and described electric capacity (5), be connected with one end of bidirectional trigger diode (6), the other end of described bidirectional trigger diode (6) communicates with described bidirectional triode thyristor (2), one end of the first circuit and one end of second circuit are connected with relay coil (7) jointly, described relay coil (7) communicates with power supply (1).
2. a kind of detector for boiler flame according to claim 1, is characterized in that: described photo resistance (3) is in series with the potentiometer (8) of current limliting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213913.7U CN203797698U (en) | 2014-04-29 | 2014-04-29 | Boiler flame detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213913.7U CN203797698U (en) | 2014-04-29 | 2014-04-29 | Boiler flame detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797698U true CN203797698U (en) | 2014-08-27 |
Family
ID=51379904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213913.7U Expired - Fee Related CN203797698U (en) | 2014-04-29 | 2014-04-29 | Boiler flame detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982908A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Boiler flame detection device |
-
2014
- 2014-04-29 CN CN201420213913.7U patent/CN203797698U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982908A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Boiler flame detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20200429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |