CN1080910C - Indication type gas leakage alarm and automatic cutting off device - Google Patents
Indication type gas leakage alarm and automatic cutting off device Download PDFInfo
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- CN1080910C CN1080910C CN99117880A CN99117880A CN1080910C CN 1080910 C CN1080910 C CN 1080910C CN 99117880 A CN99117880 A CN 99117880A CN 99117880 A CN99117880 A CN 99117880A CN 1080910 C CN1080910 C CN 1080910C
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- gas
- gas leakage
- alarm
- relay
- automatic cutting
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Abstract
The present invention relates to an alarm device for controlling flow, which is provided with a gas detecting device, wherein the output end of a detecting signal is connected with the input end of a signal processing and converting circuit; one path of the output end is connected with a signal-interruption control relay connected with an alarm display, and the other path is connected with a gas leakage delay control relay and the alarm display; the gas leakage delay control relay is connected with a gas shut-off valve which can also be connected with an earthquake and fire detecting device. When gas leaks, acoustic-optic signals are sent out by the alarm display, and the gas supply can be cut off in time. The present invention obviously improves the safety of gas supply systems.
Description
The present invention relates to a kind of control warning device of flow.
The great disaster person of general generation, majority is because the user is careless or carelessness, causes wire short-circuiting or gas combustion, initiation fire.And the gas that ignites is the one of the main reasons that causes blast, causes conflagration.Owing to often need to use rock gas, gas to heat in public place and the house, therefore, can be after avoiding using or using because of gas leak causes blast and conflagration, except user oneself want careful, must the dependence detection alarm etc. the device of taking precautions against natural calamities.Usually the device majority of being installed by relevant department's appointment of taking precautions against natural calamities is in doors ceiling installing temperature or cigarette formula detecting device, and the collocation water spray system is connected the alarm of fire exchange.In case any fire takes place, can detect signal immediately, behind the alarm of fire exchange of pulpit, sprinkling fire immediately.But existing fire plant also can't carry out Detection ﹠ Controling to methane gas.And existing general its safety in utilization of gas indicator is relatively poor, and it is provided with detecting device, signal Processing change-over circuit, pilot relay and Alarm Display, the output of the detecting device newspaper display of receiving a crime report behind the signal Processing change-over circuit.
Purpose of the present invention aims to provide a kind of detection means of utilizing and detects the gas leakage state; can external earthquake and fire-fighting pick-up unit; when continuation gas leakage state takes place; but automatic or manual control is cut off gas and is supplied with, but the indication type gas leakage alarm and automatic cutting off device of protection gas feed system.
The present invention is provided with gas indicator spare (or gas perception device), signal Processing and change-over circuit, pilot relay, Alarm Display, the detection signal output termination signal Processing of gas indicator spare and the input end of change-over circuit, the output terminal one tunnel of signal Processing and change-over circuit connects disconnected letter pilot relay, the disconnected letter pilot relay newspaper display of receiving a crime report; Another road connects gas leakage and postpones pilot relay and Alarm Display, and gas leakage postpones pilot relay and is connected with gas blocking (or shutoff) valve, and the gas intercepter valve (IV) is connected with seismic sensor and fire-fighting pick-up unit in addition.
Control circuit of the present invention is main signal source with gas indicator spare, when gas leakage takes place, can be according to the different situations of gas leakage, reasonably utilize signal Processing to cooperate the action of pilot relay with change-over circuit respectively, by the Automatic Program operation of setting, until turning off the gas intercepter valve (IV) automatically, cut off gas and supply with, and give the alarm and glimmer red light.Solve unsafe problem in the existing gas supply, simultaneously, control circuit is connected on seismic sensor and the fire-fighting pick-up unit, can be when earthquake or fire generation, and the supply that also can turn off gas automatically.The security and the automaticity of gas feed system have obviously been improved.Its device relatively simple for structure, function is stronger.
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is an embodiments of the invention Circuits System schematic diagram.
Fig. 3 is the system flowchart of Fig. 2.
Following embodiment will the present invention is further illustrated.
As shown in Figure 1, the present invention is provided with gas indicator spare 1, signal Processing and change-over circuit 2, disconnected letter pilot relay 3, breaks and believe that warning horn 4 and warning lamp 5, gas leakage postpone control relay circuit 6, leakage alarm device 7 and leak gas warning lamp 8, gas intercepter valve (IV) 9.The detection signal output termination signal Processing of gas indicator spare 1 and the input end of change-over circuit 2, the output terminal of circuit 2 divide 2 the tunnel, the one tunnel to connect disconnected letter pilot relay 3, and another road connects gas leakage and postpones pilot relay 6.Disconnected letter pilot relay 3 connects disconnected letter warning horn 4 and warning lamp 5.Gas leakage postpones pilot relay 6 and connects leakage alarm device 7, gas leakage warning lamp 8 and gas breaker 9.In addition, gas breaker 9 also is connected with seismic sensor 10 and fire-fighting pick-up unit 11.
Referring to Fig. 2,3, the output of gas indicator spare or relaying device S1 is through accurate adjustable resistance VR, with the signal input ic IC1 (B1403) that detects and IC2 (74148) through arrangement and conversion, when not taking place when unusual, the signal that detection means S1 sends is a normal condition, and circuit is failure to actuate.
When gas indicator spare or relaying device S1 in use break down, when not sending signal, then IC1 and IC2 can be because of the disconnected letters of S1 in circuit, the 9th pin output bias by IC2, make pilot relay RL2 conducting, disconnected letter alarm bell BZ2 will give the alarm, and yellow warning lamp Y also can bright lamp, and expression S1 damages.Can change as quickly as possible or maintenance.
In when, in the feed system of gas gas leakage taking place when, its situation is divided into two kinds, a kind ofly only leak gas, and the user detects immediately, and turn off gas immediately or recover normal user for of short duration improper use, at this moment S1 sends signal after IC1, IC2 arrangement and conversion, by the 6th pin output bias of IC2, make the bright lamp caution of red colored lamp R, pilot relay RL1 conducting simultaneously, its normal opened contact RL1 closure makes alarm bell BZ1 conducting send leakage alarm.At this moment, because gas leakage delayed relay T1 need postpone just can move behind the setting-up time, therefore if do not continue gas leakage again, the normal opened contact T1 of the delayed relay T1 that then leaks gas can't be closed, magnetic reed switch AS akinesia, automatic intercepting valve just can not move the supply of cutting off gas.At this moment after checking that gas makes use, as not continuing gas leakage again, can press stopping bell button LY, make relay C4 action, its normal opened contact C4a closure, relay C1 action, the then normally closed contact C1b tripping of C1 makes alarm bell BZ1 outage, just can stop alarm song, gas densities such as warning lamp R need are reduced under the perception limit, just can extinguish automatically.
In addition, if the gas leakage situation continues, then as described above, gas indicator spare S1 sends signal; To the bright lamp of warning lamp R, after alarm bell BZ1 gives the alarm, behind setting-up time, normal battle of the T1a closure of gas leakage delayed relay T1 makes flicker relay T2 action, the bright lamp of pilot lamp DR of automatic intercepting valve, expression will be turned off intercepter valve (IV), the coil DF of intercepter valve (IV) is moved simultaneously, utilizes magnetic reed switch AS, intercepter valve (IV) is held turn off.When moving by what DF, ASa and ASb synchronization action, wherein ASb is one of the DF mains side, so one of DF side power supply can be closed.After the ASa action, relay C3 also moves in addition, and then another mains side of DF also is switched off, and DF just can bring into play the blocking function.By the what flicker relay T2 just discharge of saturated back of being charged, so its normally closed contact T2b jumps and closes during discharge, because of intercepter valve (IV) is held, just can tripping, maintenance blocking state.But, in DF action, and ASa and ASb be when being failure to actuate, and expression intercepter valve (IV) DF fails to finish closing motion, at this moment, because of flicker relay T2 can move discontinuously, make the coil of intercepter valve (IV) continue to be interrupted action, when preventing that the contingency intercepter valve (IV) from not cutting out, can move once more, guarantee that intercepter valve (IV) can turn off gas really, perseveration is represented just that intercepter valve (IV) cuts out to finish to ASa and ASb action.
The action of above-mentioned flicker relay can utilize intercepter valve (IV) manually to feedback switch LS, is chosen in its a contact, make relay C3 action, then its normally closed contact C3b will open circuit in tripping, and flicker relay T2 discharges and recharges action and just can not influence intercepter valve (IV) coil DF, makes the suction of its interruption put action and stops.If will feedback selector switch LS forwards its b contact to, then because of relay C3 moves via resistance, flicker relay T2 will inhale discontinuously to be put action a period of time.
Again, when when gas leakage, as described above, T1 is moved by the what relay, and its normally closed contact T1b promptly can tripping, and then DG will extinguish because of opening circuit.Certainly normal battle of the T1a closure of relay T1 makes the bright lamp of indication class DR, and the expression intercepter valve (IV) has moved turns off gas.
If generation emergency, when unearthed shake detecting device and fire plant, cause intercepter valve (IV) can't interdict gas automatically, then can directly press push switch LR, make relay C2 action, its normal opened contact C2a closure can be moved intercepter valve (IV) coil DF, making the intercepter valve (IV) action cut off the supply of gas, is to be the urgent manually control of blocking.
In addition, the present invention can connect the series circuit of establishing what relay C2 with detecting device (or claiming perceptron) S2 of earthquake and fire prevention system, when earthquake or fire take place when, but turn-on relay C2, its normal opened contact C2a closure, intercepter valve (IV) coil DF action, DR is bright for its pilot lamp, just can interdict the supply of gas automatically, prevent that immediately gas from leaking, avoid bigger disaster to take place.Simultaneously, when emergency, as when pressing the LY switch, the valve coil DM that can make intercepter valve (IV) is because of relay C4 action, and moves, and reaches the purpose of remote control intercepter valve (IV), and can make alarm bell BZ1 stop bell.
In sum, the present invention can turn off intercepter valve (IV) when not only for gas gas leakage taking place automatically, and can send warning lamp and alarm song.In addition, during the disconnected letter of of short duration gas leakage or detecting device, also can learn caution and alarm, especially behind the detecting device that connects earthquake, firebreak device, more can be in earthquake, when fire takes place, the safety of the person and property is safeguarded in the supply of interdicting gas automatically.
Claims (4)
1. indication type gas leakage alarm and automatic cutting off device, be provided with gas indicator spare, the input end of its detection signal output termination signal Processing and change-over circuit, the output terminal one tunnel that it is characterized in that signal Processing and change-over circuit connects disconnected letter pilot relay, the disconnected letter pilot relay newspaper display of receiving a crime report; Another road connects gas leakage and postpones pilot relay and Alarm Display, and gas leakage postpones pilot relay and is connected with the gas intercepter valve (IV).
2. indication type gas leakage alarm and automatic cutting off device as claimed in claim 1 is characterized in that the gas intercepter valve (IV) utilizes the LY switch to control its valve coil action and the gas leakage alarm bell stops bell.
3. indication type gas leakage alarm and automatic cutting off device as claimed in claim 1 is characterized in that the gas intercepter valve (IV) is connected with seismic sensor and fire-fighting pick-up unit in addition.
4. indication type gas leakage alarm and automatic cutting off device as claimed in claim 3, the detecting device that it is characterized in that said seismic sensor and fire-fighting pick-up unit is connected with relay C2 and is connected in series to feedbacking the B contact of switch and magnetic reed switch, when detecting device action short circuit is closed, the coil of conducting gas intercepter valve (IV).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117880A CN1080910C (en) | 1999-10-14 | 1999-10-14 | Indication type gas leakage alarm and automatic cutting off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117880A CN1080910C (en) | 1999-10-14 | 1999-10-14 | Indication type gas leakage alarm and automatic cutting off device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1248682A CN1248682A (en) | 2000-03-29 |
| CN1080910C true CN1080910C (en) | 2002-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99117880A Expired - Fee Related CN1080910C (en) | 1999-10-14 | 1999-10-14 | Indication type gas leakage alarm and automatic cutting off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080910C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241939A (en) * | 2016-12-23 | 2018-07-03 | 杨文玉 | Formula of cruising intelligent gas delivery system and its method |
| CN110286208A (en) * | 2019-07-01 | 2019-09-27 | 贵州大学 | One kind being used for the tendentious detection device of spontaneous combustion of coal seam |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321052Y (en) * | 1997-12-17 | 1999-05-26 | 龚亨灿 | Gas leakage intelligent control speech alarm |
-
1999
- 1999-10-14 CN CN99117880A patent/CN1080910C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321052Y (en) * | 1997-12-17 | 1999-05-26 | 龚亨灿 | Gas leakage intelligent control speech alarm |
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| Publication number | Publication date |
|---|---|
| CN1248682A (en) | 2000-03-29 |
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