CN201917998U - Stand-alone anti-explosion alarm for inflammable gas - Google Patents
Stand-alone anti-explosion alarm for inflammable gas Download PDFInfo
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- CN201917998U CN201917998U CN201020654355XU CN201020654355U CN201917998U CN 201917998 U CN201917998 U CN 201917998U CN 201020654355X U CN201020654355X U CN 201020654355XU CN 201020654355 U CN201020654355 U CN 201020654355U CN 201917998 U CN201917998 U CN 201917998U
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Abstract
The utility model discloses a stand-alone anti-explosion alarm for inflammable gas. The alarm comprises a microprocessor and a power supply, wherein the input terminal of the microprocessor is connected with a signal conditioning circuit and a keystroke input circuit; the input terminal of the signal conditioning circuit is connected with an inflammable gas concentration detection sensor; the microprocessor is used for receiving gas concentration signals conditioned by the signal conditioning circuit and signals input by the keystroke input circuit, and outputting control signals to a control circuit and a display and alarm circuit which are connected with the output terminal of the microprocessor, after analyzing and processing the received signals; the output terminal of the control circuit is connected with an air exhaust device; the display and alarm circuit comprises a gas concentration value display circuit, a security level indicating circuit and a voice alarm circuit; the power supply comprises a sensor power supply circuit and a signal processing power supply circuit; and the signal conditioning circuit consists of a signal amplification circuit, a filter circuit and an A/D conversion circuit in sequential connection. The stand-alone anti-explosion alarm for inflammable gas has the advantages of simple structure, reasonable design, high sensitivity, high reliability and long service life, conforms to the anti-explosion requirement and facilitates popularization.
Description
Technical field
The utility model belongs to the anti-explosion safety product technical field, especially relates to a kind of free-standing inflammable gas anti-explosion alarming device.
Background technology
In recent years, national gas industry development is swift and violent, and combustion gas such as liquefied gas, rock gas, coal gas are used widely in industry and commerce as clean energy resource.As a kind of novel energy, its popularize and application have been brought into play enormous function to improving the The Surroundings in Cities quality undoubtedly.But along with its widespread use, these gas improper use or leakages, health, explosive will be harmful to health, accident risks is many, can not in time find and handle during as gas leakage, can give society and the harm of bringing on a disaster property of resident, this has increased the dangerous and labile factor in city to a certain extent.Can not satisfy environmental requirement at abominable common alarms of factory of environment such as the oil of widespread use combustion gas, chemical industry, coal, metallurgy, combustion gas, coking, therefore need a kind of new high inflammable gas anti-explosion alarming device of reliability to replenish market.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, and a kind of free-standing inflammable gas anti-explosion alarming device is provided, and it is simple in structure, and is reasonable in design, meet requirement of explosion proof, highly sensitive, the reliability height, cost is low, and long service life is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of free-standing inflammable gas anti-explosion alarming device, it is characterized in that: comprise microprocessor and power supply, the input termination signal conditioning circuit of described microprocessor and the button inputting circuits that alarm threshold value is set, the input termination combustable gas concentration detecting sensor of described signal conditioning circuit is also nursed one's health the signal that the combustable gas concentration detecting sensor is gathered, the signal of gas concentration signal after the conditioning of described microprocessor receives signals modulate circuit and button inputting circuits input and carry out analyzing and processing after the output control signal give control circuit and demonstration and the warning circuit that is connected on its output terminal, run in wind apparatus and the opening and closing of air exhausting device are controlled of the output terminal of described control circuit, described demonstration and warning circuit comprise the gas concentration value display circuit, level of security indicating circuit and sound warning circuit; Described power supply comprises the 220V alternating current is converted to the galvanic sensor electrical source circuit of 24V and converts the 220V alternating current to 5V galvanic signal Processing power circuit, described sensor electrical source circuit and combustable gas concentration detecting sensor are joined, and described signal Processing power circuit joins with signal conditioning circuit, microprocessor, button inputting circuits, control circuit and demonstration and warning circuit; Signal amplification circuit, filtering circuit and the A/D change-over circuit of described signal conditioning circuit for joining successively.
Described combustable gas concentration detecting sensor is catalytic combustion type combustable gas concentration detecting sensor or electric chemical formula combustable gas concentration detecting sensor.
The operating voltage of described combustable gas concentration detecting sensor is 24V, and described gas concentration sensor is output as the normal voltage signal of 0mv-30mv.
Described microprocessor is single chip computer AT 89C52.
Described gas concentration value display circuit is charactron display circuit or LCD display circuit.
Described level of security indicating circuit is the pilot lamp indicating circuit.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design: the utility model comprises microprocessor, power supply, combustable gas concentration detecting sensor, signal conditioning circuit, button inputting circuits, control circuit and demonstration and warning circuit, simple in structure and can realize the inflammable gas explosion prevention function well, reasonable in design.
2, meet requirement of explosion proof: the utility model manufactures and designs in strict accordance with requirement of explosion proof, can be by the check of fire product quality supervised department.
3, highly sensitive, the reliability height: the utility model combustable gas concentration detecting sensor adopts special-purpose catalytic combustion type combustable gas concentration detecting sensor or electric chemical formula combustable gas concentration detecting sensor, and adopt single-chip microcomputer to do signal processing mechanism, the combustable gas concentration monitoring sensor of also levying using has designed special-purpose signal conditioning circuit, highly sensitive, response speed is fast, strong interference immunity, working stability, the reliability height.
4, cost is low, long service life: the utility model selection work voltage is that the single chip computer AT 89C52 of 5V makees microprocessor, and in order to reduce the difficulty of signal Processing power circuit design, the operating voltage of each components and parts of selecting for use in the circuit is 5V, design and manufacture cost is low, performance is good, long service life.
5, be convenient to promote the use of: the utility model can be widely used in gas station, combustion gas pumping plant, workshop, hotel, hotel, chemical plant, coal, metallurgy, brewery, fuel factory, coking, irrigated area, the place that warehouse, methane-generating pit etc. use and produce or store is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Description of reference numerals:
The 1-combustable gas concentration detects the 2-signal conditioning circuit; The 2-1-signal amplification circuit;
Sensor;
The 2-2-filtering circuit; The 2-3-A/D change-over circuit; The 3-microprocessor;
The 4-button inputting circuits; The 5-control circuit; 6-shows and warning circuit;
6-1-gas concentration value demonstration 6-2-level of security is indicated electric 6-3-audible alarm circuit;
Circuit; The road;
The 7-air exhausting device; The 8-power supply; 8-1-sensor electrical source circuit;
8-2-signal Processing power supply
The road.
Embodiment
As shown in Figure 1, the utility model comprises microprocessor 3 and power supply 8, the input termination signal conditioning circuit 2 of described microprocessor 3 and the button inputting circuits 4 that alarm threshold value is set, the input termination combustable gas concentration detecting sensor 1 of described signal conditioning circuit 2 is also nursed one's health the signal that combustable gas concentration detecting sensor 1 is gathered, the gas concentration signal after 2 conditionings of described microprocessor 3 received signals conditioning circuit and the signal of button inputting circuits 4 inputs and carry out analyzing and processing after the output control signal give control circuit 5 and demonstration and the warning circuit 6 that is connected on its output terminal, run in the wind apparatus 7 and opening and closing of air exhausting device 7 are controlled of the output terminal of described control circuit 5, described demonstration and warning circuit 6 comprise gas concentration value display circuit 6-1, level of security indicating circuit 6-2 and sound warning circuit 6-3; Described power supply 8 comprises the 220V alternating current is converted to 24V galvanic sensor electrical source circuit 8-1 and converts the 220V alternating current to the galvanic signal Processing power circuit of 5V 8-2, described sensor electrical source circuit 8-1 and combustable gas concentration detecting sensor 1 are joined, and described signal Processing power circuit 8-2 and signal conditioning circuit 2, microprocessor 3, button inputting circuits 4, control circuit 5 and demonstration and warning circuit 6 join; Signal amplification circuit 2-1, filtering circuit 2-2 and the A/D change-over circuit 2-3 of described signal conditioning circuit 2 for joining successively.
As shown in Figure 1, in the present embodiment, described combustable gas concentration detecting sensor 1 is catalytic combustion type combustable gas concentration detecting sensor or electric chemical formula combustable gas concentration detecting sensor.The operating voltage of described combustable gas concentration detecting sensor 1 is 24V, and described gas concentration sensor is output as the normal voltage signal of 0my-30my.Described microprocessor is single chip computer AT 89C52.Described gas concentration value display circuit 6-1 is charactron display circuit or LCD display circuit.Described level of security indicating circuit 6-2 is the pilot lamp indicating circuit.
The principle of work of the present utility model and the course of work are: at first, alarm threshold value is set: set by 4 pairs of combustable gas concentration alarm threshold values of button inputting circuits, microprocessor 3 receives the signal and the storage of button inputting circuits input; Afterwards, the real-time collection and the processing of combustable gas concentration: detect the combustable gas concentration signal that uses the scene by combustable gas concentration detecting sensor 1, and the normal voltage signal that converts 0my-30my to is sent into signal conditioning circuit 2,2 pairs of described combustable gas concentration detecting sensor 1 real-time gas concentration signals of exporting of signal conditioning circuit amplify successively, filtering and A/D conversion is gathered by 3 pairs of gas concentration signals after signal conditioning circuit 2 is handled of microprocessor and is compared with the alarm threshold value of setting and export control signal and give control circuit 5 and demonstration and warning circuit 6; At last, realized explosion-proof and reported to the police by control circuit 5 and demonstration and warning circuit 6: described control circuit 5 receives the control signal of microprocessors 3 outputs in real time and the opening and closing of air exhausting device 7 is controlled, when combustable gas concentration reaches setting threshold in the environment, air exhausting device 7 is opened and is also in time carried out pump drainage wind, reduce the concentration of on-the-spot inflammable gas, prevent explosion accident, simultaneously, described gas concentration value display circuit 6-1 shows detected on-the-spot combustable gas concentration value in real time, whether described level of security indicating circuit 6-2 indication scene safety, if safety, green indicating lamp is bright, if it is dangerous, red led is bright and do not stop to glimmer and cause user's attention, described audible alarm circuit 6-3 sends chimes of doom and reminds the user, there are potential safety hazard in the sound that demonstration and warning circuit 6 send and the warning and the gas concentration value display alarm scene that the user uses of light, in time take effective precautionary measures to avoid the fire that causes because of combustible gas leakage, blast, poisoning waits human casualty accident and property loss, when combustable gas concentration in the environment is reduced to the alarm threshold value of setting when following, the alarm that is in alarm condition will automatically restore to normal operating conditions.
In the entire work process of the present utility model, combustable gas concentration detecting sensor 1 is by sensor electrical source circuit 8-1 power supply, and the unit in the alarm described in the utility model except that combustable gas concentration detecting sensor 1 all powers by the signal Processing power circuit.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (6)
1. free-standing inflammable gas anti-explosion alarming device, it is characterized in that: comprise microprocessor (3) and power supply (8), the input termination signal conditioning circuit (2) of described microprocessor (3) and the button inputting circuits (4) that alarm threshold value is set, the input termination combustable gas concentration detecting sensor (1) of described signal conditioning circuit (2) is also nursed one's health the signal that combustable gas concentration detecting sensor (1) is gathered, the signal of gas concentration signal after described microprocessor (3) received signal conditioning circuit (2) conditioning and button inputting circuits (4) input and carry out analyzing and processing after the output control signal give control circuit (5) and demonstration and the warning circuit (6) that is connected on its output terminal, run in wind apparatus (7) and the opening and closing of air exhausting device (7) are controlled of the output terminal of described control circuit (5), described demonstration and warning circuit (6) comprise gas concentration value display circuit (6-1), level of security indicating circuit (6-2) and sound warning circuit (6-3); Described power supply (8) comprises the 220V alternating current is converted to the galvanic sensor electrical source circuit of 24V (8-1) and converts the 220V alternating current to the galvanic signal Processing power circuit of 5V (8-2), described sensor electrical source circuit (8-1) is joined with combustable gas concentration detecting sensor (1), and described signal Processing power circuit (8-2) joins with signal conditioning circuit (2), microprocessor (3), button inputting circuits (4), control circuit (5) and demonstration and warning circuit (6); Signal amplification circuit (2-1), filtering circuit (2-2) and the A/D change-over circuit (2-3) of described signal conditioning circuit (2) for joining successively.
2. according to the described a kind of free-standing inflammable gas anti-explosion alarming device of claim 1, it is characterized in that: described combustable gas concentration detecting sensor (1) is catalytic combustion type combustable gas concentration detecting sensor or electric chemical formula combustable gas concentration detecting sensor.
3. a kind of free-standing inflammable gas anti-explosion alarming device of stating according to claim 2, it is characterized in that: the operating voltage of described combustable gas concentration detecting sensor (1) is 24V, described gas concentration sensor is output as the normal voltage signal of 0my-30my.
4. according to the described a kind of free-standing inflammable gas anti-explosion alarming device of claim 1, it is characterized in that: described microprocessor is single chip computer AT 89C52.
5. according to the described a kind of free-standing inflammable gas anti-explosion alarming device of claim 1, it is characterized in that: described gas concentration value display circuit (6-1) is charactron display circuit or LCD display circuit.
6. according to the described a kind of free-standing inflammable gas anti-explosion alarming device of claim 1, it is characterized in that: described level of security indicating circuit (6-2) is the pilot lamp indicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020654355XU CN201917998U (en) | 2010-12-10 | 2010-12-10 | Stand-alone anti-explosion alarm for inflammable gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020654355XU CN201917998U (en) | 2010-12-10 | 2010-12-10 | Stand-alone anti-explosion alarm for inflammable gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917998U true CN201917998U (en) | 2011-08-03 |
Family
ID=44417790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020654355XU Expired - Lifetime CN201917998U (en) | 2010-12-10 | 2010-12-10 | Stand-alone anti-explosion alarm for inflammable gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201917998U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426220A (en) * | 2011-09-14 | 2012-04-25 | 北京百纳威尔科技有限公司 | Gas concentration detection method and mobile terminal |
| CN102518596A (en) * | 2011-12-26 | 2012-06-27 | 刘立文 | Control system and control method of energy-saving anti-explosion fan |
| CN103247152A (en) * | 2013-05-09 | 2013-08-14 | 济南市长清计算机应用公司 | Inflammable gas alarm controller |
| CN104076068A (en) * | 2013-03-26 | 2014-10-01 | 深圳市深安旭传感技术有限公司 | Vehicle and monitoring alarm apparatus for environment inside vehicle |
| RU2558006C2 (en) * | 2013-11-06 | 2015-07-27 | Открытое акционерное общество "Ангарская нефтехимическая компания" | Alerter of critical pre-explosive concentrations |
-
2010
- 2010-12-10 CN CN201020654355XU patent/CN201917998U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426220A (en) * | 2011-09-14 | 2012-04-25 | 北京百纳威尔科技有限公司 | Gas concentration detection method and mobile terminal |
| CN102426220B (en) * | 2011-09-14 | 2015-03-18 | 北京百纳威尔科技有限公司 | Gas concentration detection method and mobile terminal |
| CN102518596A (en) * | 2011-12-26 | 2012-06-27 | 刘立文 | Control system and control method of energy-saving anti-explosion fan |
| CN104076068A (en) * | 2013-03-26 | 2014-10-01 | 深圳市深安旭传感技术有限公司 | Vehicle and monitoring alarm apparatus for environment inside vehicle |
| CN104076068B (en) * | 2013-03-26 | 2017-02-15 | 深圳市深安旭传感技术有限公司 | Vehicle and monitoring alarm apparatus for environment inside vehicle |
| CN103247152A (en) * | 2013-05-09 | 2013-08-14 | 济南市长清计算机应用公司 | Inflammable gas alarm controller |
| RU2558006C2 (en) * | 2013-11-06 | 2015-07-27 | Открытое акционерное общество "Ангарская нефтехимическая компания" | Alerter of critical pre-explosive concentrations |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |