CN2199458Y - Automatic safety coal gas controller - Google Patents
Automatic safety coal gas controller Download PDFInfo
- Publication number
- CN2199458Y CN2199458Y CN 94213930 CN94213930U CN2199458Y CN 2199458 Y CN2199458 Y CN 2199458Y CN 94213930 CN94213930 CN 94213930 CN 94213930 U CN94213930 U CN 94213930U CN 2199458 Y CN2199458 Y CN 2199458Y
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- CN
- China
- Prior art keywords
- gas
- circuit
- valve
- model
- utility
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- 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.)
- Expired - Fee Related
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- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an automatic safety gas controller, comprising a gas sensor, a detecting circuit, a comparison circuit, a gas path control system, and a sound and light alarm circuit. The utility model is characterized in that a control circuit in the gas path control system is composed of a non-contact high speed switch and integrated components; a controllable gas valve is composed of a valve body 1, a valve cover 3, a coil assembly 4, a movable iron core 6, a shaft 7, and a sealing membrane 2, and the working power supply of the controllable gas valve uses the 12V direct-current power supply. The utility model has the advantages of simple structure, high sensitivity, good selectivity, strong anti-interference ability, high automation, and safety. The utility model is suitable for the automatic alarm and the gas source automatic cutting of the leakage of the household gas (the petroleum liquid gas and the natural gas), and the accidents can be prevented.
Description
The utility model relates to automatic warning and the automatic safety guard that cuts off source of the gas that home pipeline coal gas (liquefied gas, natural gas) leaks.
Along with the promulgated by the State Council expanding economy; the raising of living standards of the people; city and residents from villages and towns have been extensive use of coal gas, liquefied gas, natural gas; owing to use the poor quality of careless and equipment; leakages such as coal gas easily take place; tend to cause and poison and fire threat to life safety and property loss major accident, an urgent demand development and production can not only be reported to the police automatically to leakages such as coal gas also can close the safety guard of source of the gas simultaneously automatically.
The ZL92231431.4 name is called " automatic alarm breaking unit for coal gas leaked " and discloses a kind of mainly by gas sensor, testing circuit, comparison circuit, sound, optical alarm circuit, the automatic detection gas leak that control circuit and controlled gas valve are formed, the autoalarm amputator of cut-out gas source.This autoalarm amputator has highly sensitive, and antijamming capability is strong, good airproof performance, the characteristics that the scope of application is wide.But this patent has adopted two contact switch relay circuits to remove to control cutter (controlled gas valve) and active display on circuit design, and cutter and active display all work exchanging under 220 volts of power supplys, and security reliability is relatively poor.Cutter is opened the profiled seal rubber ring and is ventilated by manually pressing ventilation button, trivial operations, and the system automation level is not high.
The utility model provides a kind of safe and reliable at the deficiency of above-mentioned prior art, and monitoring of environmental gas leak is also sent sound automatically automatically, auroral poles is alert, cuts off the gas safety automatic controller of source of the gas automatically.
Gas safety automatic controller of the present utility model, comprise the gas sensor that the induced environment gas concentration changes, receive the testing circuit of gas sensor conductivity variations, the comparison circuit that receives the self-detection circuit signal of telecommunication and compare, receive the sound that the control signal of sending from comparison circuit gives work respectively, light alarm system and coal gas air-path control system, described coal gas air-path control system comprises control circuit and controlled gas valve, it is characterized in that control circuit is that a kind of control circuit that is made of contactless speed-sensitive switch integrated device easily produces spark, described controlled gas valve comprises valve body, valve gap, coil assembly, moving iron core, lid, axle, seal membrane etc.Simple in structure, automatic switch, be active in one's movements, the working power of controlled gas valve is 12 volts a dc source, and is therefore safe and reliable.
Gas safety automatic controller of the present invention is being started shooting moment, and gas sensor often plays pendulum, testing circuit has signal output, produce misoperation, can add in comparison circuit by resistance for this reason, the compensating circuit that electric capacity and integrated circuit are formed is to prevent misoperation.Below in conjunction with accompanying drawing comment describe in detail bright:
Fig. 1 is the block diagram of gas safety automatic controller of the present utility model.
Fig. 2 is the circuit diagram of gas safety automatic controller of the present utility model.
Fig. 3 is the structural representation of the controlled gas valve of gas safety automatic controller of the present utility model.
As shown in Figure 1 and Figure 2, gas sensor of the present utility model, testing circuit, comparison circuit, sound, the alert circuit of auroral poles all belong to prior art, can select existing related techniques arbitrarily for use, for example:
Voltage-stabilized power supply circuit is by transformer B, rectifier D
1～D
4, voltage-stablizer T and filter capacitor C
1, C
2Deng composition.
Comparison circuit is by comparator IC
1, IC
4, resistance R
7, R
8Deng composition.
Sound light alarming circuit is by IC
2, IC
3, LED
1, LED
2, R
10, R
18, D
2, R
5, R
9, C
3, C
4, composition such as Y.
Control circuit is by comparator IC
3, contactless speed-sensitive switch integrated device IC
6, resistance R T
2, R
16, R
17, capacitor C
2, diode D
1Deng composition.
Gas sensor MQ can only choose coal gas or liquefied gas, natural gas a kind of gas sensor of different model of gas sensitization wherein according to different use occasions.
In pure air, the gas sensor electrical conductivity is low, potentiometer W
1With thermistor Rt0 two ends be electronegative potential, comparator IC
1Output also is an electronegative potential, IC
5Do not work, buzzer Y does not send chimes of doom.IC
3Output is electronegative potential IC also
6Do not work, output does not have 12 volts of DC voltage outputs, and controlled gas valve is not worked.
When environment had coal gas etc. to leak, the electrical conductivity of gas sensor increased, W
1Increase with the Rt0 both end voltage, when gas concentration reaches certain value (by regulating W
1Can select sensitivity), IC
1Output is a high potential, LED
2It is shinny that positive pole obtains positive potential, LED
1Do not work.IC
2Output also is a high potential, IC
5Obtain operating voltage, buzzer Y sends the letter chimes of doom of having a rest.IC
3Output also is a high potential, IC
6Obtain control voltage, output has 12 volts of outputs of DC voltage, makes controlled gas valve work, closes source of the gas.Pass through RT
2, C
2Delay circuit makes IC
1After output is electronegative potential, IC
3Output should keep that the time is high potential more than 2 minutes, makes controlled gas valve JF continue to close a period of time.
Usually moment after energising, because the characteristic of semiconductor of gas sensor MQ, violent variation can appear in its electrical conductivity, and through about 5 minutes, its electrical conductivity enters normal condition with basicly stable.This inherent characteristic of gas sensor will make circuit send the false alarm signal one time in the moment of switching on as not taking measures, and eliminating this false alarm is to pass through RT
1, C
1, IC
4Compensating circuit is realized, makes IC
1In the gas sensor stabilization process, remain electronegative potential output.
As shown in Figure 3, the controlled gas valve of the utility model gas safety automatic controller comprises valve body 1, seal membrane 2, valve gap 3, coil assembly 4, lid 5, moving iron core 6, axle 7.
During ventilation, the pressure by in the air inlet gas pipe upwards backs down seal membrane, makes coal gas flow to the gas outlet from air inlet.When controlled gas valve JF obtained voltage, coil assembly 4 had electric current to pass through, and formed magnetic field, and moving iron core 6 moves downward under the effect of magnetic field, makes seal membrane 2 push down the connector of air intake duct and gas off-take, closes source of the gas automatically.
Controlled gas valve main body of the present utility model can constitute with the aluminium foundry goods, and parts all are fixed in the main body of aluminium diecasting.Seal membrane 2 is to make with the fourth film elastomeric material of anti-aging corrosion resistance gas, guarantees the service life of controlled gas valve.
Controlled gas valve of the present utility model is simple in structure, is active in one's movements, and is safe and reliable.
Automatic safety coal gas controller of the present utility model has highly sensitively, and selectively good, antijamming capability is strong, and is safe and reliable, automaticity height, the characteristics such as easy to operate.
Claims (1)
1, a kind of gas safety automatic controller, the air-sensitive that comprises the variation of induced environment gas concentration is stopped sensor, receive the testing circuit of gas sensor conductivity variations, the comparison circuit that receives the self-detection circuit signal of telecommunication and compare, receive the sound that the control signal of sending from comparison circuit gives work respectively, light alarm system and coal gas air-path control system, described coal gas air-path control system comprises control circuit and controlled gas valve, it is characterized in that control circuit is a kind of control circuit that is made of contactless speed-sensitive switch integrated device, described controlled gas valve comprises valve body 1, valve gap 3, coil assembly 4, lid 5, moving iron core 6, axle 7, seal membrane 2.The working power of controlled gas valve is 12 volts a dc source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94213930 CN2199458Y (en) | 1994-06-09 | 1994-06-09 | Automatic safety coal gas controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94213930 CN2199458Y (en) | 1994-06-09 | 1994-06-09 | Automatic safety coal gas controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199458Y true CN2199458Y (en) | 1995-05-31 |
Family
ID=33830336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94213930 Expired - Fee Related CN2199458Y (en) | 1994-06-09 | 1994-06-09 | Automatic safety coal gas controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199458Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871626B (en) * | 2003-09-15 | 2010-05-12 | 安德鲁G·L·布朗 | A seal device |
-
1994
- 1994-06-09 CN CN 94213930 patent/CN2199458Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871626B (en) * | 2003-09-15 | 2010-05-12 | 安德鲁G·L·布朗 | A seal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |