CN2129880Y - Multifunction gas burning automatic safety device - Google Patents
Multifunction gas burning automatic safety device Download PDFInfo
- Publication number
- CN2129880Y CN2129880Y CN 91221072 CN91221072U CN2129880Y CN 2129880 Y CN2129880 Y CN 2129880Y CN 91221072 CN91221072 CN 91221072 CN 91221072 U CN91221072 U CN 91221072U CN 2129880 Y CN2129880 Y CN 2129880Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- gas
- resistance
- triode
- ventilating fan
- 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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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a multifunction gas burning automatic safety device, being a warner which can warn when the gas burning of gas, liquid gas, etc. leak and in particular can automatically cut off gas source. The utility model can prevent the accidents of poisoning, explosion, etc. when the gas, the liquid gas, etc. leak from happening; the sensitivity is high; the work is stable; the safety performance is strong; the cost of production is low; the electricity saving performance is good. A whole circuit comprises a direct current power supply circuit, a gas sensor circuit, a signal amplification circuit, a signal sampling circuit, an electromagnetic gas valve delay time drive circuit, an electromagnetic gas valve main circuit, an exhaust fan delay time drive circuit, a switching circuit, an aural warning circuit, an emitter follower circuit, a concentration step displaying circuit, etc.
Description
The utility model belongs to the alarm that gas leakages such as coal gas, liquefied gas can cut off source of the gas automatically.Be a kind of coal gas that utilizes starting leakage, warnings such as liquefied gas are used to prevent that coal gas, liquefied gas etc. from leaking the alarm of the contingencies such as blast of poisoning.
Imflammable gas such as coal gas, liquefied gas, natural gas, biogas act as a fuel and progressively enter family now, and various combustion gas are also used in the heating of industrial furnace.Various Gas appliances in use, cause gas leakage because of air valve, pipeline, the aging outmoded wearing and tearing of rubber unavoidably, or in use meet fortuitous events such as wind is big, food overflows because of cooker and stop working, make imflammable gas be full of house, production operation place, causing poisons suffocates and serious accident such as breaking out of fire blast.The intensive population concentration of town house, combustion gas use security measures enough to pay attention to.Though Fuel Gas Leak Alarm one series products is also arranged, but it can only reminds people be noted, and can't cut off source of the gas, stops accident, if on-the-spot unmanned when reporting to the police, or because of the old,weak,sick and disabled adult and child's unable processing on the scene, the blast of poisoning waits contingency to still have generation.
At the problems referred to above, the purpose of this utility model is to provide gas alarms such as a kind of coal gas that utilizes leakage, liquefied gas, particularly can cut off the alarm of source of the gas automatically, be used to prevent that coal gas, liquefied gas etc. from leaking contingency generations such as the blast of poisoning, prevent trouble before it happens.
Technical solutions of the utility model are as follows: it has housing, and integrated circuit is made of following each circuit in the housing: dc power electric routing transformer (BT), electric capacity (C
1) (C
2) (C
3) (C
4) (C
5) (C
6) (C
7) (C
8), resistance (R
28), power supply indicator (L
1) He Qiaodui (PT) composition; The gas sensor circuit is by gas sensor (TGS), resistance (R
1) (R
2) form; Signal amplification circuit is by resistance (R
3) (R
4), electric capacity (C
11), diode (D
1) (D
2), potentiometer (W
1) and μ A741 operational amplifier (IC
1) form; Signal sample circuit is by potentiometer (W
2) (W
3) (W
4) (W
5), resistance (R
5) (R
6), triode (BG
1) form; The electromagnetic gas valve delay driving circuit is by resistance (R
7) (R
8) (R
9), (R
25), electric capacity (C
9) (C
12), diode (D
3), triode (BG
2) (BG
3) form; The electromagnetic gas valve major loop is made up of one-way SCR (3CT), E shape electromagnet (FD); The ventilating fan delay driving circuit is by resistance (R
14) (R
15) (R
16) (R
26), electric capacity (C
10), diode (D
4), triode (BG
6) (BG
7) form; The ventilating fan major loop is made up of bidirectional triode thyristor (BCR), ventilating fan (M); On-off circuit is by resistance (R
10) (R
11) (R
12) (R
27), triode (BG
4) (BG
5) form; Audible alarm circuit is by integrated (IC of the sound
2), piezoelectric ceramic piece (HTD), resistance (R
13), triode (BG
13), inductance (L) forms; Emitter follower circuit is by resistance (R
28) triode (BG
8), potentiometer (W
5) form; Concentration ladder display circuit is by resistance (R
17) (R
18) (R
19) (R
20) (R
21) (R
22) (R
23) (R
24), electric capacity (C
11), diode (D
5)～(D
8), triode (BG
9) (BG
10) (BG
11) (BG
12), light emitting diode (L
2) (L
3) (L
4) (L
5) form.
Multifunctional fuel automatic protecting device is highly sensitive, working stability, and fail-safe is strong, can stop that poisoning that gas leakage causes suffocates and serious accident such as breaking out of fire blast.Adopt gas sensor in the integrated circuit, when the kitchen smoke contaminated with oil mist, can open ventilating fan automatically and get rid of greasy dirt, stop automatically after the air cleaning, to ensureing that health plays good action the smog sensitivity.Low cost of manufacture in addition, electricity saving performance is good.
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is a multifunctional fuel automatic protecting device integrated circuit block diagram;
Fig. 2 and Fig. 3 are multifunctional fuel automatic protecting device integrated circuit figure, and wherein Fig. 3 is emitter follower circuit and the concentration ladder display circuit in the integrated circuit.
Critical component in the integrated circuit is gas sensor (TGS).Gas sensor (TGS) is inequality to the sensitivity of gas with various because model is different, in general all responsive to carbon monoxide, carbon dioxide, alkanes, alcohols, toxic gas, smog etc., what have lays particular emphasis on certain gas sensitization, and what select for use in the integrated circuit is gas sensor (TGS) to coal gas, oil liquefied gas and smog sensitivity.This gas sensor (TGS) is made up of inductor and resistive heater, and resistive heater is in order to improve the sensitivity of inductor.Behind inductor A, B end making alive, resistive heater heats and reaches thermal balance, under external combustion gas effect, and the resistance change between inductor A, B, its resistance value increases with gas concentration and diminishes, and can change to 10K Ω or change to 50K Ω from 200K Ω from 50K Ω.Get the signal that this current change quantity obtains combustion gas, finish automatic unlatching ventilating fan, close electromagnetic gas valve, automatically audible alarm, self check automatically.Functions such as gas concentration demonstration are through the threshold parameter of combustion gas analyzer calibration adjustment variable concentrations.Because gas leakage, when airborne coal gas, when liquefied gas or smog surpassed safe concentration, the resistance value between gas sensor (TGS) inductor A, B diminished load resistance (R rapidly
2) go up voltage by the concentration ratio rising, through μ A741 operational amplifier (IC
1) weak signal is amplified, through potentiometer (W
1) higher limit of regulating threshold values is sensitivity, uses potentiometer (W after the processing respectively
2) (W
3) (W
4) (W
5) demarcate the action threshold values that air draft is reported to the police, closed three executive components of valve by standard gas sample, and carry out the demonstration of gas concentration ladder respectively, thus realize accurately security personnel.With automatic startup ventilating fan (M) is example, specifically describe as follows: according to the different requirements of each circuit precision with the power consumption situation, five groups of DC power supply circuit setting ± 12V, 6V, 6V, 3V, 18V, after the aerial coal gas of leakage, liquefied gas or smog enter gas sensor (TGS), resistance between inductor A, B reduces along with the increase of gas concentration, B terminal voltage at gas sensor (TGS) rises about about 0～500mV, through μ A741 operational amplifier (IC
1) after in-phase end input amplified, about 1～10V output was through adjustable potentiometer (W
2) (W
3) (W
4) (W
5) centre tap regulate threshold values and be input to respectively in the delay driving circuit of ventilating fan (M) and electromagnetic gas valve delay driving circuit and the audible alarm circuit and go, that ventilating fan (M) adopts is bidirectional triode thyristor (BCR), that electromagnetic gas valve adopts is one-way SCR (3CT), and what audible alarm adopted is the 5G0602 alarm will sound.Integrated (IC of the special-purpose sound
2), by triode (BG
13) inductance (L) and piezoelectric ceramic piece (HTD), send the sound, and the magnetic valve valve is played on-off action by the mechanical lever principle.Display circuit is according to different gas concentration situation light emitting diode (L among Fig. 3
2) (L
3) (L
4) (L
5) respectively shinny demonstration, show various states such as normal, air draft, warning, pass valve successively.That is to say light emitting diode (L
2) (L
3) (L
4) (L
5) concentration increases and shinny demonstration respectively along with coal gas, liquefied gas are revealed, when coal gas, liquefied gas concentration when 10PPm is following, light emitting diode (L
1) bright expression is normal, as concentration light emitting diode (L during greater than 50PPm
2) bright, expression must start ventilating fan (M), as concentration light emitting diode (L during greater than 150PPm
3) bright, expression is leaked comparatively seriously and is promptly reported to the police, as concentration light emitting diode (L during greater than 200PPm
4) bright, the expression electromagnetic gas valve is closed.So the situation bright from indicator lamp can intuitively reflect indoor fuel gas concentration.The utility model design has self-checking function, because gas sensor (TGS) has property, when energising, inductor also is under the cold conditions situation, and gas sensing property is not thermally-stabilised as yet, after closing a switch, and μ A741 operational amplifier (IC
1) output is just arranged, and can start ventilating fan (M), after 20～30 seconds, heating resistor reached thermal balance, μ A741 operational amplifier (IC
1) no signal output, ventilating fan (M) stops automatically, gets final product operate as normal after adding combustion gas.Utilize above-mentioned principle to carry out self check.When behind the electric power starting path about 10 seconds, ventilating fan (M) will start running automatic stop in about 1 minute voluntarily, intact can accurately coming into operation is described, if also not reaction of 30 seconds ventilating fans (M) behind the electric power starting path shows then that work is undesired should check or keep in repair.The utility model also is provided with hand gear, can use as usual when having a power failure.
Claims (1)
1, a kind of multifunctional fuel automatic protecting device, have housing, it is characterized in that: integrated circuit is made of DC power supply circuit, gas sensor circuit, signal amplification circuit, signal sample circuit, electromagnetic gas valve delay driving circuit, electromagnetic gas valve major loop, ventilating fan delay driving circuit, ventilating fan major loop, on-off circuit, audible alarm circuit, emitter follower circuit and concentration ladder display circuit in the housing; Each circuit composition and annexation are as follows:
Dc power electric routing transformer (BT), electric capacity (C
1) (C
2) (C
3) (C
4) (C
5) (C
6) (C
7) (C
8), resistance (R
28), power supply indicator (L
1) He Qiaodui (PT) composition, this circuit is connected respectively with gas sensor circuit, signal amplification circuit, signal sample circuit;
The gas sensor circuit is by gas sensor (TGS), resistance (R
1) (R
2) form, this circuit is connected with signal amplification circuit;
Signal amplification circuit is by resistance (R
3) (R
4), electric capacity (C
11), diode (D
1) (D
2), potentiometer (W
1) and MA741 operational amplifier (IC
1) form, this circuit is connected with signal sample circuit;
Signal sample circuit is by potentiometer (W
2) (W
3) (W
4) (W
5), resistance (R
5) (R
6), triode (BG
1) form, this circuit is connected respectively with ventilating fan delay driving circuit, electromagnetic gas valve delay driving circuit, on-off circuit, emitter follower circuit;
The electromagnetic gas valve delay driving circuit is by resistance (R
7) (R
8) (R
9) (R
25), electric capacity (C
9) (C
12), diode (D
3), triode (BG
2) (BG
3) form, this circuit is connected with the electromagnetic gas valve major loop;
The electromagnetic gas valve major loop is made up of one-way SCR (3CT), E shape electromagnet (FD);
The ventilating fan delay driving circuit is by resistance (R
14) (R
15) (R
16) (R
26), electric capacity (C
10), diode (D
4), triode (BG
6) (BG
7) form, this circuit is connected with the ventilating fan major loop;
The ventilating fan major loop is made up of bidirectional triode thyristor (BCR), ventilating fan (M);
On-off circuit is by resistance (R
10) (R
11) (R
12) (R
27), triode (BG
4) (BG
5) form, this circuit is connected with audible alarm circuit;
Audible alarm circuit is by integrated (IC of the sound
2), piezoelectric ceramic piece (HTD), resistance (R
13), triode (BG
13), inductance (L) forms;
Emitter follower circuit is by resistance (R
28), triode (BG
8), potentiometer (W
5) form, this circuit is connected with concentration ladder display circuit;
Concentration ladder display circuit is by resistance (R
17) (R
18) (R
19) (R
20) (R
21) (R
22) (R
23) (R
24), electric capacity (C
11), diode (D
5) (D
6) (D
7) (D
8), triode (BG
9) (BG
10) (BG
11) (BG
12), light emitting diode (L
2) (L
3) (L
4) (L
5) form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91221072 CN2129880Y (en) | 1991-11-01 | 1991-11-01 | Multifunction gas burning automatic safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91221072 CN2129880Y (en) | 1991-11-01 | 1991-11-01 | Multifunction gas burning automatic safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2129880Y true CN2129880Y (en) | 1993-04-14 |
Family
ID=33760250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91221072 Expired - Fee Related CN2129880Y (en) | 1991-11-01 | 1991-11-01 | Multifunction gas burning automatic safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2129880Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110889950A (en) * | 2018-09-10 | 2020-03-17 | 中国石油化工股份有限公司 | Novel intelligence oil gas well anti-theft box gas concentration detection warning device |
-
1991
- 1991-11-01 CN CN 91221072 patent/CN2129880Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110889950A (en) * | 2018-09-10 | 2020-03-17 | 中国石油化工股份有限公司 | Novel intelligence oil gas well anti-theft box gas concentration detection warning 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 |