CN201251838Y - Combustible gas concentration display alarm - Google Patents
Combustible gas concentration display alarm Download PDFInfo
- Publication number
- CN201251838Y CN201251838Y CNU2008200274209U CN200820027420U CN201251838Y CN 201251838 Y CN201251838 Y CN 201251838Y CN U2008200274209 U CNU2008200274209 U CN U2008200274209U CN 200820027420 U CN200820027420 U CN 200820027420U CN 201251838 Y CN201251838 Y CN 201251838Y
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- CN
- China
- Prior art keywords
- combustible gas
- circuit
- alarm
- gas concentration
- constitute
- 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.)
- 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 relates to the field of combustible gas safety alarm equipment, in particular to a combustible gas concentration display alarm. The technical proposal is as follows: a combustible gas sensor QM is connected with adjustable resistors (W1, W2) and resistors (R1, R2) to constitute a combustible gas detection circuit, and triodes (BG1, BG2) and a resistor R3 constitute an electronic control circuit; four diodes (D1, D2, D3, D4) are connected with light-emitting diodes (LED1, LED2, LED3, LED4) and resistors (R4, R5, R6, R7) to constitute the combustible gas concentration display circuit; a transistor BG3 is connected with an alarming horn DL to constitute an alarm circuit, and a switch K and batteries DC are connected in series to constitute a power supply circuit; and the combustible gas concentration display circuit is connected with the power supply circuit through the alarm circuit. The combustible gas concentration display alarm can display the concentration of the combustible gas at any time during use and give a sound and light alarm to remind people of being careful when the concentration is above the standard.
Description
Technical field: the utility model relates to inflammable gas security alarm equipment field, specifically is a kind of combustable gas concentration display alarm.
Background technology: in the present daily life and Coal Production, there are many unsafe factors in inflammable gass such as rock gas, coal gas, liquefied gas or gas; If indoor or working-yard combustable gas concentration exceeds safe range, then can bring danger to the life security of miner or house person.Home-use fuel gas alarm has only warning function usually at present, lacks concentration and shows.
The utility model content: the purpose of this utility model is exactly the defective that exists at prior art, and a kind of simple and practical combustable gas concentration display alarm is provided.
Technical scheme is: combustible gas sensor QM connects adjustable resistance (W1, W2), resistance (R1, R2) is formed the inflammable gas testing circuit, triode (BG1, BG2) form electronic control circuits with resistance R 3; Four diodes (D1, D2, D3, D4) connect light emitting diode (LED1, LED2, LED3, LED4) respectively and resistance (R4, R5, R6, R7) is formed the combustable gas concentration display circuit, pass through the warning circuit of the connection alarming horn DL composition of triode BG3 then, be connected with the power circuit of K switch with battery DC series connection.
Combustable gas concentration display alarm of the present utility model in use can show combustable gas concentration at any time, can send sound and light alarm if exceed standard, and the prompting people take care.
Description of drawings: accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment:
With reference to accompanying drawing, the driving stage of combustible gas sensor QM series connection adjustable resistance W1 and resistance R 1, output terminal connects W2, R2 and forms the inflammable gas testing circuit; Triode BG1 connects BG2 and resistance R 3 is formed electronic control circuit; Diode D1, D2, D3, D4 connect LED 1, LED2, LED3, LED4 and resistance R 4, R5, R6, R7 composition combustable gas concentration display circuit respectively; Triode BG3 connects alarming horn DL and forms warning circuit; DC is a battery; K is a power switch.
Its principle of work: during use, open K switch, when not having inflammable gas, combustible gas sensor QM output low level, triode BG1, BG2 all end, diode D1, D2, D3, D4 end equally, and LED 1, LED2, LED3, LED4 are all not luminous, and alarming horn DL is sounding not.Rise as combustable gas concentration, rising triode BG1, BG2 conducting gradually along with combustable gas concentration, diode D1, D2, D3, D4 can be along with the conducting degree of triode BG1, BG2 with this conductings, this moment, LED 1, LED2, LED3, LED4 were luminous with this conducting equally, can monitor the concentration of inflammable gas according to the luminous number of light emitting diode, triode BG3 will conducting and is triggered alarming horn DL and send warning when the concentration of inflammable gas reaches dangerous values.
Claims (1)
1, a kind of combustable gas concentration display alarm is characterized in that: combustible gas sensor QM connects adjustable resistance (W1, W2), resistance (R1, R2) is formed the inflammable gas testing circuit, triode (BG1, BG2) form electronic control circuits with resistance R 3; Four diodes (D1, D2, D3, D4) connect light emitting diode (LED1, LED2, LED3, LED4) respectively and resistance (R4, R5, R6, R7) is formed the combustable gas concentration display circuit, pass through the warning circuit of the connection alarming horn DL composition of triode BG3 then, be connected with the power circuit of K switch with battery DC series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200274209U CN201251838Y (en) | 2008-09-01 | 2008-09-01 | Combustible gas concentration display alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200274209U CN201251838Y (en) | 2008-09-01 | 2008-09-01 | Combustible gas concentration display alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251838Y true CN201251838Y (en) | 2009-06-03 |
Family
ID=40747510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200274209U Expired - Fee Related CN201251838Y (en) | 2008-09-01 | 2008-09-01 | Combustible gas concentration display alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251838Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978828A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Combustible gas alarm and exhaust system in data storage chamber |
| CN104978826A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Steady power supplying type combustible gas detection apparatus |
-
2008
- 2008-09-01 CN CNU2008200274209U patent/CN201251838Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978828A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Combustible gas alarm and exhaust system in data storage chamber |
| CN104978826A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Steady power supplying type combustible gas detection apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20091009 |