CN206301051U - A kind of boiler water shortage detects circuit - Google Patents
A kind of boiler water shortage detects circuit Download PDFInfo
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- CN206301051U CN206301051U CN201621406603.2U CN201621406603U CN206301051U CN 206301051 U CN206301051 U CN 206301051U CN 201621406603 U CN201621406603 U CN 201621406603U CN 206301051 U CN206301051 U CN 206301051U
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- China
- Prior art keywords
- resistance
- triode
- water shortage
- boiler
- boiler water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model is related to a kind of boiler water shortage detection circuit, and the boiler water shortage detection circuit is including resistance R1, R2, R3, R4, R5, R6, R7, triode Q1, Q2, optocoupler OC1 and controls circuit.By the use of the water in boiler as detection circuit in switch conduction conductor, ensure that boiler water is operated under normal water level, be not in water shortage also heating problem, energy saving, it is to avoid security incident occur.The utility model circuit is simple, and manufacturing cost is low, with good practicality.
Description
Technical field
The utility model is related to boiler controlling device field, specifically, is related to a kind of boiler water shortage detection circuit.
Background technology
Boiler water level highly, is to ensure that safety in production and provides the important parameter of quality steam, modern industry production is come
Say especially so, because one of distinguishing feature of modern boiler is exactly that quantity of steam is significantly improved, mixing volume is relatively reduced, water
Position pace of change quickly, does not note slightly, is easy for causing high drum water level, or dryout boiler.Water level is too high to cause steam zone
Water droplet, water level is too low and can influence steam not enough, causes internal gas to increase, and the bursting of boilers can be also forced when serious.Therefore pot
Stove water lev el control is very important.
In the prior art it is general detected using NTC temperature sensors detect boiler whether water shortage, but this mode do not have
Method allows water level to maintain under normal standard, it may appear that the possibility of situation described above, cost is also higher in addition.
Utility model content
The utility model aims to provide a kind of boiler water shortage detection circuit, to solve the problems, such as above-mentioned prior art.
Therefore, the concrete technical scheme that the utility model is used is as follows：
A kind of boiler water shortage detects circuit, wherein, the boiler water shortage detection circuit include resistance R1, R2, R3, R4, R5,
R6, R7, triode Q1, Q2, optocoupler OC1 and control circuit, metal probe of resistance R1 one end connection in boiler, separately
One end connects the basis set of resistance R2 and triode Q1, the colelctor electrode of triode Q1 and the basis set of triode Q2, the one of resistance R3, R4
End connection, the anode and negative electrode of optocoupler OC1 connect one end of resistance R5 and the colelctor electrode of triode Q2, the collection of optocoupler OC1 respectively
Electrode and emitter stage connect one end and ground of resistance R6 respectively, and the colelctor electrode of optocoupler OC1 is connected to the voltage of the control circuit
Detection input, the other end of resistance R6 is connected to first voltage source positive pole, the other end and triode Q1, Q2 of resistance R2, R4
Emitter stage be all connected to VSS, the other end of resistance R3, R5 and one end of resistance R7 are connected to the second voltage source positive pole, electricity
The other end for hindering R7 is connected to the shell of boiler.
Further, the first voltage source just extremely+5V, the second voltage source just extremely+12V.
Further, described triode Q1, Q2 are the NPN type triode of same model.
Further, the optocoupler OC1 is four footlights couplings or six footlights couplings.
Further, the voltage measurement input of the control circuit is the I/O port of single-chip microcomputer.
The utility model uses above-mentioned technical proposal, has an advantageous effect in that, the utility model ensure that boiler water
Be operated under normal water level, be not in water shortage also heating problem, energy saving, it is to avoid security incident occur.This practicality
New-type circuit is simple, and manufacturing cost is low, with good practicality.
Brief description of the drawings
Fig. 1 shows the schematic diagram that circuit is detected according to the boiler water shortage of the heater of the utility model embodiment.
Specific embodiment
To further illustrate each embodiment, the utility model is provided with accompanying drawing.These accompanying drawings are in the utility model is disclosed
A part for appearance, it is mainly used to illustrate embodiment, and running of the associated description of specification to explain embodiment can be coordinated former
Reason.Coordinate and refer to these contents, those of ordinary skill in the art will be understood that other possible implementation methods and this practicality are new
The advantage of type.Component in figure is not necessarily to scale, and similar element numbers are conventionally used to indicate similar component.
The utility model is further illustrated in conjunction with the drawings and specific embodiments.Reference picture 1, boiler water shortage detection electricity
Road includes resistance R1, R2, R3, R4, R5, R6, R7, triode Q1, Q2, optocoupler OC1 and control circuit（It is not shown）.Resistance R1
Metal probe of one end connection in boiler, the other end connects the basis set of resistance R2 and triode Q1, the collection of triode Q1
Electrode is connected with the basis set of triode Q2, one end of resistance R3, R4, and the anode and negative electrode of optocoupler OC1 connect resistance R5's respectively
One end and the colelctor electrode of triode Q2, the colelctor electrode and transmitting collection of optocoupler OC1 connect one end and ground of resistance R6, optocoupler respectively
The colelctor electrode of OC1 is connected to the voltage detecting input IO_U of the control circuit, and the other end of resistance R6 is connected to first voltage
Source positive pole, the other end of resistance R2, R4 and the emitter stage of triode Q1, Q2 are all connected to VSS, the other end of resistance R3, R5
And one end of resistance R7 is connected to the second voltage source positive pole, the other end of resistance R7 is connected to the shell of boiler.
Preferably, first voltage source just extremely+5V, the second voltage source just extremely+12V.But first voltage source positive pole and
Two voltage source positive poles can also use other voltages.
Preferably, triode Q1, Q2 is the NPN type triode of same model.But triode Q1, Q2 can also be different shapeds
Number triode, as long as it can realize the effect in this circuit.
Further, the optocoupler OC1 is four footlights couplings or six footlights couplings etc., preferably four footlights couplings.
Further, the voltage measurement input IO_U of the control circuit is the I/O port of single-chip microcomputer, especially AD mouthfuls.Monolithic
Machine is made according to the signal of I/O port by program and accordingly judges and carry out subsequent treatment.
Operation principle of the present utility model is briefly described referring now to Fig. 1.Probe is with boiler jacket equivalent to switch
Two contacts, when there is water in boiler, probe is contacted with water, i.e., two contact conductings, now triode Q1 conductings, by triode
The basis set voltage pull-down of Q2, allows triode Q2 to be not turned on, and optocoupler OC1 is just not turned on, and voltage detecting input IO_U is detected by height
Level.When water shortage in boiler, probe is not contacted with water, i.e., two contacts are not turned on, and now triode Q2 is not turned on, triode
Q1 is turned on, optocoupler OC1 conductings, and voltage detecting input IO_U is detected by low level.Therefore circuit is controlled（Single-chip microcomputer）By inspection
Whether the voltage for measuring is just to can confirm that in boiler there is water in high level or low level.
Although specifically showing and describing the utility model with reference to preferred embodiment, those skilled in the art should
This is understood, not departing from the spirit and scope of the present utility model that appended claims are limited, in form and details
On the utility model can be made a variety of changes, be protection domain of the present utility model.
Claims (5)
1. a kind of boiler water shortage detection circuit, it is characterised in that the boiler water shortage detection circuit include resistance R1, R2, R3,
R4, R5, R6, R7, triode Q1, Q2, optocoupler OC1 and control circuit, metal of resistance R1 one end connection in boiler
Probe, the other end connects the base stage of resistance R2 and triode Q1, the colelctor electrode of triode Q1 and base stage, the resistance of triode Q2
One end connection of R3, R4, the anode and negative electrode of optocoupler OC1 connect one end of resistance R5 and the colelctor electrode of triode Q2, light respectively
The collector and emitter of coupling OC1 connects one end and ground of resistance R6 respectively, and the colelctor electrode of optocoupler OC1 is connected to the control electricity
The voltage detecting input IO_U on road, the other end of resistance R6 is connected to first voltage source positive pole, the other end of resistance R2, R4 and
The emitter stage of triode Q1, Q2 is all connected to VSS, and the other end of resistance R3, R5 and one end of resistance R7 are connected to the second electricity
Potential source positive pole, the other end of resistance R7 is connected to the shell of boiler.
2. boiler water shortage as claimed in claim 1 detects circuit, it is characterised in that the first voltage source just extremely+5V, institute
State the second voltage source just extremely+12V.
3. boiler water shortage as claimed in claim 1 detects circuit, it is characterised in that described triode Q1, Q2 are same model
NPN type triode.
4. boiler water shortage as claimed in claim 1 detects circuit, it is characterised in that the optocoupler OC1 is four footlights couplings or six
Footlights coupling.
5. boiler water shortage as claimed in claim 1 detects circuit, it is characterised in that the voltage detecting input of the control circuit
It is the I/O port of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621406603.2U CN206301051U (en) | 2016-12-20 | 2016-12-20 | A kind of boiler water shortage detects circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621406603.2U CN206301051U (en) | 2016-12-20 | 2016-12-20 | A kind of boiler water shortage detects circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206301051U true CN206301051U (en) | 2017-07-04 |
Family
ID=59215251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621406603.2U Active CN206301051U (en) | 2016-12-20 | 2016-12-20 | A kind of boiler water shortage detects circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206301051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270996A (en) * | 2017-07-13 | 2017-10-20 | 厦门芯阳科技股份有限公司 | A kind of water level detection circuit and device |
-
2016
- 2016-12-20 CN CN201621406603.2U patent/CN206301051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270996A (en) * | 2017-07-13 | 2017-10-20 | 厦门芯阳科技股份有限公司 | A kind of water level detection circuit and device |
| CN107270996B (en) * | 2017-07-13 | 2021-01-15 | 厦门芯阳科技股份有限公司 | Water level detection circuit and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Boiler water shortage detection circuitry Effective date of registration: 20181219 Granted publication date: 20170704 Pledgee: Xiamen finance Company limited by guarantee Pledgor: Xiamen Polytron Technologies Inc Registration number: 2018990001233 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |