CN2184873Y - Gas self control safety device - Google Patents
Gas self control safety device Download PDFInfo
- Publication number
- CN2184873Y CN2184873Y CN 93242753 CN93242753U CN2184873Y CN 2184873 Y CN2184873 Y CN 2184873Y CN 93242753 CN93242753 CN 93242753 CN 93242753 U CN93242753 U CN 93242753U CN 2184873 Y CN2184873 Y CN 2184873Y
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- CN
- China
- Prior art keywords
- gas
- alarm
- safety device
- signal amplification
- control safety
- 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 a gas automatic control safety device which can monitor the concentration of the combustible gas in air and has alarm and automatic control functions. The utility model is composed of the interface of an alternating current power supply, a pressure reducing rectifier, an air monitor, a signal amplification control circuit, an alarm and an electromagnetic valve. The input and the output terminals of the pressure reducing rectifier are respectively connected with the interface of the alternating current power supply and the power supply terminal of the air monitor. The input and the output terminals of the signal amplification control circuit are respectively connected with the output terminal of the air monitor and input terminal of the alarm. The input terminal of the electromagnetic valve is connected with the interface of the alternating current power supply. The gating contact pair of a gating relay in the signal amplification control circuit is respectively connected with the control terminals of the alarm and the electromagnetic valve.
Description
The utility model relates to a kind of imflammable gas (coal gas, natural gas, liquefied gas) combustion gas self-control safety device safe in utilization.
The report document that relates to combustion gas alarm safe in utilization is a lot, and these alarms can only reminds people be taken measures and can not be blocked air-flow, so that after the danger of discovery is arranged, deal with the possibility that causes accident to take place improperly.
The combustion gas self-control safety device that the utility model relates to, purpose provides a kind of concentration that not only can monitor fuel gas in the air, accurately reports to the police; Simultaneously can also block air-flow automatically; After report to the police eliminating, the combustion gas self-control safety device of air feed automatically again.
Combustion gas self-control safety device of the present utility model is by the magnetic valve that is installed on the gas supply pipeline, the gas monitoring device, and alarm and power-supply controller constitute.
Combustion gas self-control safety device of the present utility model, after the energising, magnetic valve is opened normal air feed, the work of electron gas photosensitive elements, monitoring air.When fuel gas content in the air reached predetermined warning concentration, complete machine work was sent light and audible alarm magnetic valve outage simultaneously and is blocked gas-flow, guarantees that the content of combustion gas in the air no longer increases.When the content of combustion gas in the air is lower than the warning predetermined concentration, alarm stop to report to the police magnetic valve energising, gas pipeline is opened normal air feed, duty before complete machine is got back to and reported to the police.After the warning, even fail to eliminate fault, combustion gas self-control safety device of the present utility model can guarantee that also the concentration of fuel gas is no more than predetermined warning amount in the air.Combustion gas self-control safety device of the present utility model adopts light, audible alarm, makes deaf, the blind disabled person also can vigilance.
Content of the present utility model do further explanation with the following Examples, but content of the present utility model is not limited only to the content among the embodiment.
Fig. 1 is the structural representation of combustion gas self-control safety device among the embodiment.
Fig. 2 is the circuit square figure of combustion gas self-control safety device power-supply controller.
Fig. 3 is combustion gas self-control safety device power-supply controller circuit theory diagrams.
As shown in Figure 1, combustion gas self-control safety utensil among the embodiment has casing 1, gas sensor 2 is serially connected in the steam line, and A is an input, P is the electric reversal valve 3 of the automatically controlled cut-off type of bi-bit bi-pass list of output, gas monitoring device power supply shows green light 4, warning red light 5, buzzer 6, power-supply controller 7 is installed in the casing 1.
Shown in Fig. 2-3, the combustion gas self-control safety device power-supply controller in the present embodiment is by alternating-current power supply interface 8, buck rectifier 9, gas monitoring device 10.Signal amplification controller circuit 11, alarm 12 gentle manifold solenoid valves 13 constitute.The input termination power interface 8 of buck rectifier 9 wherein, the power end of output termination gas monitoring device 10, the output of the input termination gas monitoring device 10 of signal amplification controller circuit 11, alarm (warning red light ZD
2, buzzer) and the output of 12 input termination signal amplification controller circuit 11, the power supply input of the electric reversal valve 13 of the automatically controlled cut-off type of bi-bit bi-pass list connects power interface 8.In this enforcement in the example.Gas monitoring device 10 is by gas sensor QM, adjustable resistance M
1, resistance R
1, power on light ZD
1Constitute.Signal amplification controller circuit 11 is by triode BG, diode D capacitor C
1, C
2, time-base integrated circuit 555, adjustable resistance M
2, resistance R
2, R
3Constitute with relay gate J.Alarm 12 is by warning red light ZD
2Constitute with buzzer.Relay gate J in the signal amplification controller circuit 11, control alarm 12 and the electric reversal valve 13 of bi-bit bi-pass list control cut-off type, this relay gate J has the gating contact to J
-1, J
-2And J
-3
During combustion gas self-control safety device in using present embodiment, power connection, relay gate J work, its normally closed gating contact is to J
-3Conducting, electric reversal valve 13 work of the automatically controlled cut-off type of bi-bit bi-pass list this moment, combustion gas transfers to gas furnace by this valve.Buck rectifier 9 is exported 12V direct currents, electric current display lamp ZD simultaneously
1Shinny, gas sensor QM work, the concentration of imflammable gas in the monitoring air.When imflammable gas reaches predetermined concentration in the air, the B-B of gas sensor QM
1End output one high level through triode BG, triggers time base circuit 555, makes the monostable circuit upset of compositions such as time base circuit 555 cause temporary stable state.555 the 3rd pin are exported a Gao Ping.Relay gate J work this moment, the gating contact is to J
-1, J
-2Closed J
-3Disconnect, alarm obtains operating voltage, makes the warning red light shinny, and buzzer sends alarm sound, electric reversal valve 13 dead electricity of bi-bit bi-pass list control cut-off type, and the multiple normally off of ash is blocked gas-flow.All get rid of up to fault.The concentration of imflammable gas drops to finite concentration when following in the air, the B-B of gas sensor QM
1End is in low level, and triode BG ends, and time base circuit 555 crus secundas are got back to high level, and the 6th pin current potential rises to 2/3Vcc, and tripod becomes output low level, and 555 when getting back to stable state, and relay gate J discharges, and makes the gating contact to J
-1J
-2Disconnect J
-3Spare time closes, and alarm 12 stops to report to the police, the electric reversal valve 13 energising work of the automatically controlled cut-off type of bi-bit bi-pass list, and gas-flow is open-minded, and gas sensor QM continues the airborne imflammable gas concentration of monitoring.
Under situation about often having a power failure, for not drawing the use that rings combustion gas, can the electric reversal valve 13 of bi-bit bi-pass list control cut-off type is in parallel with another control valve.
Claims (3)
1, a kind of combustion gas self-control safety device, on the imflammable gas gas pipeline, magnetic valve is installed, on combustion gas self-control safety device housing, gas sensor and alarm are arranged, power-supply controller is arranged in the housing, it is characterized in that also being provided with in the power-supply controller buck rectifier, the gas monitoring device, signal amplification controller circuit, alarm; The input of buck rectifier and output connect the power end of AC power interface and gas monitoring device respectively, and the input/output terminal of signal amplification controller connects the output of gas monitoring device and the input of alarm respectively.
2, combustion gas self-control safety device as claimed in claim 1, it is characterized in that, signal amplification controller circuit is constituting with relay gate J by time base circuit 555 mainly, one end of the drive coil of the logical relay J of the tripod selecting of time base circuit 555, relay gate J drives the negative pole output of another termination buck rectifier of circle, two couples of gating contact J of relay gate
-1, J
-2Respectively with the ZD of alarm
2, the control end of buzzer joins.
3, combustion gas self-control safety device as claimed in claim 1 is characterized in that the input termination AC power interface of solenoid-driven coil, the control end of solenoid-driven coil respectively with signal amplification controller circuit in a pair of normally closed gating contact J of relay gate J
-3Join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93242753 CN2184873Y (en) | 1993-10-23 | 1993-10-23 | Gas self control safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93242753 CN2184873Y (en) | 1993-10-23 | 1993-10-23 | Gas self control safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2184873Y true CN2184873Y (en) | 1994-12-07 |
Family
ID=33816370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93242753 Expired - Fee Related CN2184873Y (en) | 1993-10-23 | 1993-10-23 | Gas self control safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2184873Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214402A (en) * | 2014-08-07 | 2014-12-17 | 北京市燃气集团有限责任公司 | Household gas pipeline safety control valve and method based on flame monitoring |
-
1993
- 1993-10-23 CN CN 93242753 patent/CN2184873Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214402A (en) * | 2014-08-07 | 2014-12-17 | 北京市燃气集团有限责任公司 | Household gas pipeline safety control valve and method based on flame monitoring |
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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 |