CN2246761Y - Safety monitoring control device of gas - Google Patents
Safety monitoring control device of gas Download PDFInfo
- Publication number
- CN2246761Y CN2246761Y CN 95239356 CN95239356U CN2246761Y CN 2246761 Y CN2246761 Y CN 2246761Y CN 95239356 CN95239356 CN 95239356 CN 95239356 U CN95239356 U CN 95239356U CN 2246761 Y CN2246761 Y CN 2246761Y
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- circuit
- output
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- comparator
- described gas
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Abstract
The utility model relates to a monitoring device for gas safety, which is composed of an outer casing, a peripheral interface which is arranged on the outer, an acoustic-optic alarm member, and a monitoring circuit inside the casing. The monitoring circuit is fixedly sealed by rotproof and moistureproof sealant. The circuit forms a blocky shape structure after fixedly sealed. One circuit of the blocky shape structure is sparkle-free type explosion-proof structure which is rotproof and moistureproof. Peripheral structures are provided with at least two structures. One is used for a low pressure to be connected with a safety valve for gases (the patent number is 95239274.7). The valve is turned off, and a gas source is cut off. The other is used for an exhaust device by commercial power. A novel structure is arranged on the monitoring circuit of the device. The gas monitoring is precise and reliable. The safety of users who use gas appliances is ensured.
Description
The utility model relates to a kind of gas safe supervising device, is used to guarantee the safety of using the combustion gas tool indoor.Combustion gas tool such as gas furnace, kitchen range are widely-used, and the leakage of combustion gas is difficult to avoid in the use, in the past few years cause catastrophic failures such as the person a lot of owing to combustion gas is excessive.In case in time report to the police when exceeding standard and cut off combustion gas and stop the excessive accident that causes of combustion gas for the excessive amount of monitoring combustion gas of excessive combustion gas.It is very important thing.The gas safe supervising device is the target of technology exploration.
The introduction of such device is also arranged on the technical journal, generally have only prison, row effect, report to the police when monitoring out the excessive back of excessive combustion gas, reminds people is gone to discharge combustion gas and is reached and close combustion gas artificially.Because of combustion gas is corrosive, the general humidity of combustion gas tool service condition is higher, warning device generally is the circuit that is made of electronic component, uses the electronic component heating for a long time even produces spark, becomes the kindling material of gas explosion.Gas safe supervising device moistureproof, explosion-proof, corrosion resistant then becomes a technical difficult problem.
Task of the present utility model is the gas safe supervising device that proposes a kind of protection against the tide, explosion-proof, corrosion resistant, and it and safety valves for gas (patent No. 95239274.7) are supporting.Exportable information valve-off is stopped fuel gas source when exceeding standard, and connects exhaust apparatus simultaneously, discharges combustion gas, guarantees safety.
The technical solution of the utility model is: the gas safe supervising device has shell, and the air-sensitive sensing part is arranged on the shell, Peripheral Interface, and the acousto-optic indication piece has supervisory circuit in the shell, and supervisory circuit has rectification, comparison, vibration, triggering output four partly.Circuit output has two partly, some is connected with Peripheral Interface, and another partly is connected with the acousto-optic indication piece, after rectification, comparison, vibration, triggering output four part circuit connect, circuit seals into the whole block structure of insulation admittedly with the solid envelope agent of protection against the tide, corrosion resistant, insulation, is fastened in the shell.Peripheral Interface has two at least, and one is dc low-voltage, can connect safety valves for gas, and another is an electric main, connects the exhaust apparatus as ventilating fan and so on.Curing agent can be to have the epoxy of additive or resin or epoxy to add resin, or the high temperature-resistant polymer material.
The technical solution of the utility model connects the back with circuit seals admittedly with material moistureproof, anticorrosion, insulation, and circuit is the one block structure.Because curing agent has completely cut off the spark that electronic component produces, and explosion-proof is arranged.Add insulation, protection against the tide, the rotproofness of curing agent, finish the invention task.
Fig. 1 is a frame principle figure of the present utility model;
Fig. 2 is an electrical schematic diagram of the present utility model.
Describe in detail below in conjunction with accompanying drawing.
As Fig. 1,2, the gas safe supervising device has on the synthetic shell of housing and cap, the shell air-sensitive sensing part is arranged, Peripheral Interface, acousto-optic indication piece have circuit in the housing, circuit has rectification, comparison, vibration, triggering output four partly, circuit output has two partly, some links to each other with Peripheral Interface, and another partly is connected with the acousto-optic indication piece, after circuit connects, block with protection against the tide, insulation, corrosion resistant, heat-resisting curing agent because of sealing, make and cry the Lu Chengyi solid one bodily form block structure.Because fixed sealing material has protection against the tide, corrosion resistant, insulating properties so the circuit no-spark has explosion-proof.Can use for a long time safely.Solid block one bodily form structural circuit is convenient to be fastened in the housing.
Peripheral Interface on the housing has two of I and II at least.I is a dc low-voltage, can connect safety valves for gas, II is an electric main, can connect exhaust apparatus.
Rectification circuit in the circuit, by power transformer, rectification circuit and IC
1Form.IC
1Be mu balanced circuit integrated package W7805.Bridge rectifier output voltage V z, output connects IC again
1, IC
1Output services voltage V
+(Fig. 2).
The circuit working principle is air-sensitive sensing part QM, and the gas content consul is delivered to first order comparison circuit IC
4, IC when content overproof
4Transmit signals to sound, light display part SG.Show the signal that exceeds standard, simultaneously IC
4Divide two the tunnel signal exported, the one road to interface I closes gas valve.Another road is through triggering output circuit IC
5Export to interface II, discharge indoor unnecessary combustion gas (Fig. 1).
IC
5Output high potential signal, design of feedback circuit feed back to IC
4Input makes interface I keep output, keeps the closed condition of gas valve.Treat that indoor fuel gas drains, remove out valve in the time of need using combustion gas more again.Can avoid like this fuel chamber nobody the time, the circulation that combustion gas is excessive, discharge, waste combustion gas, and make interface II always be in irrational duty.
Comparison circuit in the supervisory circuit has secondary comparator IC
4And IC
5Constitute, the secondary comparator is the upper limit comparator, one-level comparator IC
4Positive input terminal V
In+Link to each other negative input end V with gas sensor QM output
In-With operating voltage V
+Link to each other.V
In-Setting voltage be V
+, IC
4Output V
OutWith diode D
5Negative pole links to each other.
IC
4V
OutWith V
IntBetween be serially connected with resistance R
11, the feedback circuit of formation one-level comparison circuit.
Secondary comparator IC
5Be the upper limit circuit, negative input end V
In-Be setting voltage, positive input terminal V
In+Connect one-level comparator IC
4Output V
Out, IC
5Output V
OutSerial connection R
19Back and BG
3Base stage links to each other, BG
3Colelctor electrode meets V
-, BG
3Emitter stage meets BG
4Base stage, BG
4Colelctor electrode meets negative pole and the diode D of Peripheral Interface I
12Positive pole, BG
4Grounded emitter.(Fig. 2)
IC
5V
OutWith IC
4V
In+Between be connected in series R
10, the feedback circuit of formation secondary comparison circuit.
Secondary comparator IC
5Output V
OutSerial connection R
25Back and triode BG
5Base stage links to each other, BG
5Colelctor electrode and IC
6The time base circuit crus secunda is connected, BG
5Grounded emitter.IC
4Be integrated package CF324.
Trigger output circuit by IC
6, light emitting diode D
13, photo resistance R
24And bidirectional triode thyristor SCR constitutes IC
6Be time base circuit CF555,555 input crus secunda and BG
5Colelctor electrode links to each other, 555 the 3rd pin and light emitting diode D
13Anodal continuous, D
13Minus earth, R
24Two ends link to each other with SCR, and SCR links to each other with Peripheral Interface II again.(Fig. 2)
Delay circuit is arranged in the circuits for triggering, and delay circuit is by R
20, C
4Constitute R
20One end and C
4And CF555 the 6th pin links to each other other end self-excitation square-wave oscillator IC
2Output V
OutJoin C
4Other end ground connection, the 6th pin of CF555 and the 7th pin short circuit.
Triggering to design in the output circuit has luminous indicating circuit, and this circuit is by R
23, D
14Form CF555 the 3rd pin and R
23One end links to each other, R
23The other end and D
14Anodal continuous, D
14Minus earth.D
14Being light emitting diode, is the light indication piece.
When gas content exceeds standard, two utmost point comparator IC
5The output high potential is through BG
3, BG
4Peripheral Interface I two ends present safety valves for gas operating voltage ZVz, close safety valves for gas and cut off fuel gas source, stop excessive.The feedback circuit of two utmost point comparators makes secondary comparator output terminal V
OutKeep high potential, safety valves for gas is in closed condition forever.Simultaneously, the circuits for triggering output, conducting civil power working power makes exhaust ventilator work, combustion gas is arranged outdoor.When indoor fuel gas drains, when needing to use combustion gas, touch hand push button AN
1, IC
5V
OutCurrent potential descends, interface I, II open circuit, and exhaust apparatus quits work, and gas valve recovers the air feed state.
The acousto-optic indicating circuit is arranged in the supervisory circuit, and this circuit is by self-excitation square-wave oscillator IC
2, resistance R
12, R
13, R
14, R
15, R
16, capacitor C
2, diode D
7, D
8, D
9, D
10Form D
7With D
10Be light emitting diode, be the light indication piece? IC
2Output is through R
15With D
7Anodal continuous, D
7Negative pole and BG
2Base stage links to each other, BG
2Grounded emitter, colelctor electrode links to each other with sound indication piece HC one end, and the HC other end is operating voltage Vz.
When indoor no combustion gas, one-level and secondary comparator output terminal are zero potential, IC
2The output square-wave pulse is through D
5Input one-level comparator IC
4, when combustion gas exceeds standard, IC
4The output high potential, D
5Blocking-up, IC
2Output makes D
7Connect pulse signal flash of light, HC sends the pulse sound ring and reports to the police.HC is the news Chinese percussion instruments, or buzzer.
Gas sensor QM duty indicating circuit is arranged in the supervisory circuit, and this circuit is by comparator IC
3, triode BG
6Resistance R
3, R
4, R
5, diode D
11, D
6Form IC
3V
In-Link to each other V with the A point of QM
In-With R
3One end links to each other, R
3The other end is V
-, V
In-Again with D
11Anodal continuous, D
11Minus earth, IC
3V
OutThrough R
5Meet BG
6Base stage and D
6Positive pole, D
6Negative pole meets BG
2Base stage, colelctor electrode is through R
9Meet Vz.
When air-sensitive sensing part QM operate as normal, QM negative terminal R
8Last voltage is IC
3in-, IC
3Be output as zero potential, BG
6End D
10What flow through adds a direct current signal again except that square-wave pulse, make D
10It is bright to protect perseverance, does not have and dodges phenomenon frequently.
When the fusing of QM filament was lost efficacy, IC
3, output high potential, BG
6Conducting, D
9End D
10On IC is only arranged
2Pulse signal, so D
10Flash of light is and dodges light demonstration frequently, and expression QM lost efficacy.Light display part D
10Permanent bright demonstration IC
2Operate as normal D
10Flash of light shows that QM lost efficacy D
10Permanent bright demonstration QM is normal.
The start preheat circuit is arranged in the supervisory circuit, and circuit is by resistance R
6, R
9, triode BG
1, C
1, diode D
9Form R
6, R
9One end connects operating voltage V
t, R
9The other end and BG
1Emitter stage and D
9Anodal continuous, BG
9Base stage and colelctor electrode between capacitor C is arranged
1, R
6One end is V
+, the other end connects BG
1Base stage and capacitor C
1(Fig. 2)
During start, GB
1Conducting, D
9End D
10Flash of light is as start C
1Charging back BG
1Base voltage is higher than emitter stage 0.7V, BG
1End D
9Conducting, D
10Permanent bright.
Comparator IC
3, IC
4, IC
5With oscillator IC
2, can adopt the four high guaily unit integrated circuit, integrated package CF324 for example, IC
3, IC
4, IC
5, IC
2Also can be with having other integrated circuits of four high guaily unit function, CF124 for example, CF224, SF324.Also can use cmos circuit, for example CMOS14573.Also can use other four high guaily unit circuit such as F4156, F347.
Integrated package CF324 in the utility model supervisory circuit and CF555 can be combined and packaged into an integrated package.Can name 35324.After the combination then line construction seem more simple.Volume is little, is convenient to encapsulate with curing agent.
When using the start of the utility model gas safe supervising device, D
10Glittering, illustrate that device starts working, work as D
10Change the permanent bright device operate as normal that then illustrates over to by the flash of light demonstration.When gas content exceeds standard, light indication D
7Flash of light, sound indication piece HC sends the sound of frequency and warns.Simultaneously, interface I output safety valve operating voltage, gas valve is closed, because the feedback circuit of comparator, gas valve is in closed condition always, light indication piece D
14The luminous demonstration while, interface II output line voltage is opened exhaust equipment or other equipment automatically, treats that exhaust finishes to press knob down, and device is does not have alert shape, interface I, II no-output, and gas valve is opened a way, and air draft stops, and recovers normal condition.
Because circuit has protection against the tide, corrosion resistant, easy thermal diffusivity through sealing into a block bodily form admittedly admittedly seal agent, makes this device that explosion-proof, moisture resistance, monitoring automatically be arranged, and is easy to use.
Claims (13)
1, a kind of gas safe supervising device, it includes shell, shell is synthetic by housing and cap, it is characterized in that the air-sensitive sensing part is arranged on the shell, Peripheral Interface, acousto-optic indication piece, circuit is arranged in the housing, circuit has rectification, comparison, vibration, triggering to export four partial circuits, connects the solid envelope agent of back circuit with moistureproof, heat-resisting, corrosion resistant, insulation, admittedly seal whole block, circuit is solid one bodily form block structure, and block circuit is fixed in the housing.
2, by the described gas safe supervising device of claim 1, it is characterized in that Peripheral Interface has two I and II at least on the shell, interface I is a dc low-voltage, can connect safety valves for gas, interface II is that electric main can connect exhaust apparatus.
3, be it is characterized in that by the described gas safe supervising device of claim 1: comparison circuit has two utmost point comparator IC
4, IC
5Constitute.Be the upper limit comparator, one-level comparator positive input terminal V
In-Link to each other negative input end V with gas sensor QM output
In-Set fiducial value.
4, by claim 1,3 described gas safe supervising devices, it is characterized in that: secondary comparator IC
5Be the upper limit circuit, negative input end.Connect setting voltage value, positive input terminal and I level comparator IC
4Output links to each other, IC
5Output is through R
19With BG
3, base stage links to each other, BG
3Colelctor electrode meets V
-, BG
3Emitter stage meets BG
4Base stage, BG
4Colelctor electrode meets Peripheral Interface I negative pole and diode D
12Positive pole, BG
4Grounded emitter.
5, by claim 1,3 described gas safe supervising devices, it is characterized in that: secondary comparator IC
5Output is through R
25With BG
5Base stage links to each other, BG
5Colelctor electrode is with the IC that triggers output circuit
6Crus secunda is connected, BG
5Grounded emitter.
6, by claim 1,3 described gas safe supervising devices, it is characterized in that triggering output circuit by IC
6, light emitting diode D
13, photo resistance R
24And bidirectional triode thyristor SCR forms IC
6Be integrated package CF555, CF555 input crus secunda and BG
5Colelctor electrode links to each other, CF555 output tripod and light emitting diode D
13Anodal continuous, D
13Minus earth, R
24Two ends link to each other with bidirectional triode thyristor SCR, and SCR links to each other with Peripheral Interface II.
7, by claim 1,3 described gas safe supervising devices, it is characterized in that design has delay circuit in the circuits for triggering, delay circuit is by R
20, C
4Constitute R
20One end links to each other with CF555 the 7th pin, another termination IC
2The pulse oscillator output joins, CF555 the 6th pin and C
4One end links to each other, C
4Other end ground connection.
8, by claim 1,3 described gas safe supervising devices, it is characterized in that triggering in the output circuit design has luminous indicating circuit, and luminous indicating circuit is by R
23, D
14Form CF555 the 3rd pin and R
23One end links to each other, R
23The other end and light emitting diode D
14Anodal continuous, D
14Minus earth.
9, by claim 1,3 described gas safe supervising devices, it is characterized in that the acousto-optic indicating circuit is arranged in the circuit, the acousto-optic indicating circuit is by square-wave oscillator IC
2, resistance R
12, R
13, R
14, R
15, R
16, capacitor C
2, diode D
7, D
8, D
9D
10, D
7With D
10Be that light emitting diode is the light indication piece, IC
2Output is through R
15With D
7Anodal continuous, D
7Negative pole and BG
2Base stage links to each other, BG
2Grounded emitter, colelctor electrode meet indication piece HD, HD other end ground connection.IC
2Output meets D simultaneously
8Positive pole, D
8Negative pole meets D
10Anodal.
10, by claim 1,3 described gas safe supervising devices, it is characterized in that having in the circuit gas sensor duty indicating circuit, this circuit is by comparator IC
3, triode BG
6, resistance R
9, R
4, R
5, diode D
11, D
6Form IC
3Negative input end V
In-Link to each other positive input terminal V with gas sensor A point
In+With R
3One end links to each other, R
3Another termination operating voltage V
+, positive input terminal again with D
11Anodal continuous, D
11Minus earth, IC
3Output is through R
5Meet BG
6Base stage and D
6Anodal D
6Negative pole meets BG
2Base stage, colelctor electrode is through R
9Meet operating voltage V
+
11, by claim 1,3 described gas safe supervising devices, it is characterized in that, connect R at the secondary comparator output terminal
10, R
10The other end and one-level comparator, positive input terminal links to each other, and links to each other another contact ground connection of hand push button again with contact of hand push button.
12, by the described gas safe supervising device of claim 1, the phase feature is the comparator IC in the circuit
3, IC
4, IC
5With IC
2Can be four high guaily unit integrated circuit CF324.
13, by the described combustion chlorine of claim 1 safety monitoring device, it is characterized in that rectification circuit hangs IC
1, bridge rectifier, transformation coil constitute IC
1Be integrated package of pressure-stabilizing CF7805 or NE7805.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 95239356 CN2246761Y (en) | 1995-03-15 | 1995-03-15 | Safety monitoring control device of gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 95239356 CN2246761Y (en) | 1995-03-15 | 1995-03-15 | Safety monitoring control device of gas |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2246761Y true CN2246761Y (en) | 1997-02-05 |
Family
ID=33881151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 95239356 Expired - Fee Related CN2246761Y (en) | 1995-03-15 | 1995-03-15 | Safety monitoring control device of gas |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2246761Y (en) |
-
1995
- 1995-03-15 CN CN 95239356 patent/CN2246761Y/en not_active Expired - Fee Related
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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 |