CN2101291U - Detecting and warning instrument for chlorine - Google Patents
Detecting and warning instrument for chlorine Download PDFInfo
- Publication number
- CN2101291U CN2101291U CN 91214946 CN91214946U CN2101291U CN 2101291 U CN2101291 U CN 2101291U CN 91214946 CN91214946 CN 91214946 CN 91214946 U CN91214946 U CN 91214946U CN 2101291 U CN2101291 U CN 2101291U
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- China
- Prior art keywords
- circuit
- amplifier
- resistance
- concentration
- chlorine
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Abstract
The concentration of the chlorine gas containing in the atmospheric air frequently needs to be detected in the monitoring of the chemical industry and the environmental protection. The detection is carried out in the laboratory by the chemical means in the past. The programs are more, the taking time is long, and the data can not be detected at site. The utility model is composed of a sensor 1, an indication amplifier 2, an indicator 3, an alarm amplifier 4, a light alarm circuit 5, a sound alarm circuit 6, a delay circuit 7, an electric source 8, and a sorption pump 9. The utility model has the advantages that the concentration of the chlorine gas can be detected; when the concentration of the chlorine gas reaches a definite degree, the sound alarm and the light alarm can be sent out; the leak gas part is convenient to find, precision is high, and the operation and the portability are convenient.
Description
The utility model belongs to the measuring instrument technical field of gas concentration.
In chemical industry and environment protection and monitoring, often need contained amount of chlorine in the atmosphere is detected.Past, this detection is carried out with chemical measure, promptly in the laboratory, use the methylol colorimetric method for determining, do not have special-purpose detecting instrument, this detection method is not directly perceived, and program is many, take length, the chlorine-containing gas sample of being gathered also may change in transit and influence the accuracy of test result, can not measure field data, brings all inconvenience to testing.
The purpose of this utility model is to provide a kind of portable instrument that can measure chlorine gas concentration at the scene immediately and can acquire a certain degree and give the alarm at chlorine gas concentration.
The utility model is by sensor 1, and indication amplifier 2, indicator 3, warning amplifier 4, optical alarm circuit 5, sound alarm circuit 6, delay circuit 7, power supply 8, asepwirator pump 9 are formed, as shown in Figure 1.
The effect of asepwirator pump 9 is when detecting tested gas to be sucked in the sensor 1.Sensor 1 is an electric signal with the change transitions of the chlorine gas concentration experienced.This signal amplifies through indication amplifier 2, input pointer 3, and indicator 3 promptly demonstrates the numerical value of chlorine gas concentration.Transport to warning amplifier 4 through another road of indication amplifier 3 amplifying signals, after amplifying, input optical alarm circuit 5.Optical alarm circuit 5 is made up of oscillatory circuit, LED or signal lamp, and when input signal reached certain intensity, oscillatory circuit promptly produced vibration and makes light emitting diode or the luminous warning of signal lamp.Another road input sound alarm circuit 6 of the oscillator signal that optical alarm circuit 5 is produced.Sound alarm circuit 6 is made up of audio oscillator circuit and loudspeaker, under the excitation of the oscillator signal that optical alarm circuit 5 is exported, produces audio oscillation, and sound horn is reported to the police.The effect of delay circuit 7 is to rigidly connect circuit passband moment, makes the signal shunting of indication amplifier 2 outputs, unlikely generation false alarm.Power supply 8 can use dry cell or accumulator, also can use the later direct current supply of AC rectification.
The utility model has the advantages that; can measure contained chlorine gas concentration in the atmosphere at the scene immediately; and can when acquiring a certain degree, chlorine gas concentration sounding, light report to the police; so that further find the chlorine leakage position; trace routine is simple, accuracy is high; easy to operate, be easy to carry, be a kind of standing instrument that is applicable to chemical enterprise, environment protection and monitoring department.
Be described further below in conjunction with embodiment shown in Figure 2:
Sensor 1 is MQ-N5 type inflammable gas gas sensor R
0, in element, the resistance R of heating
HAnd two electrodes of making by semiconductor material, supply voltage is through pull-up resistor R
1Be added on two electrodes W
1Be the current regulating resistance of heating.By the gas of asepwirator pump 9 suction sensors 1, through the resistance R of heating
HAfter heating, in sensor 1, produce ionization to a certain degree, promptly relevant by the electric current of electrode with the concentration of chlorion, pull-up resistor R
1On the concentration of voltage drop size reflection chlorion be the size of chlorine gas concentration.
Indication amplifier 2 is by integrated circuit (IC)
1(1/2LM358 type), resistance R
2, R
3, R
4, capacitor C
4, W
2, W
3, form.At IC
1Inverting input be connected to by W
2, R
4The bias voltage that circuit is supplied with.At pull-up resistor R
1The electric signal of last generation is through dropping resistor R
2, R
3Transport to IC
1In-phase input end, W
3Be feedback resistance, C
4Be filter capacitor, IC
1Output signal reflected load resistance R
1The size of last voltage drop is the size of chlorine ion concentration.
Warning amplifier 4 is by integrated circuit (IC)
2(1/4LM339 type), resistance R
5, R
6, R
7, W
5Form.Its in-phase input end is connected to by W
5, R
6, R
7The bias voltage that the bias circuit of forming is supplied with.By IC
1The signal of output is through dropping resistor R
5Transport to IC
2Inverting input, after amplifying, IC
2Output signal, the reflection chlorine gas concentration size.
Optical alarm circuit 5 is by integrated circuit (IC)
3(1/4LM339 type), resistance R
25, R
9, R
10, R
11, R
12, R
13, R
14, R
15, capacitor C
5, clamp diode D
2, LED and triode BG
1Form.Integrated circuit (IC)
3Be connected into a RC oscillator, its inverting input is connected to by R
9, R
10The bias voltage that the circuit that constitutes is supplied with is by the IC of warning amplifier
2The signal of output is through clamp diode D
2Transport to IC
3In-phase input end, R
11, R
12Be feedback resistance.When the output potential of warning amplifier 4 up to a certain degree the time, through clamp diode D
2Input IC
3, make its vibration that produces 50-80MHz, and through R
14Make triode BG
1Conducting, LED are luminous warning.
Delay circuit 7 is by integrated circuit (IC)
5, resistance R
22, R
23, R
24, capacitor C
7, diode D
1Form.IC
5Inverting input be connected to by R
22, R
24The bias voltage that the circuit that constitutes is supplied with, in-phase input end is connected to by C
7The capacitance voltage of supplying with.When instrument rigidly connects when logical C
7Terminal voltage be lower than by R
22, R
24The bias voltage that circuit provides, IC at this moment
5So the output electronegative potential is diode D
1Conducting makes IC
2Output also be electronegative potential, can not produce light, electric alarm.The potential drifting that is produced to avoid during sensor is just heated and the false alarm that causes.After this, through the charging of certain hour, C
7Voltage raises, IC
5Output potential raise D
1End, sound, optical alarm circuit get final product operate as normal.
Power supply 8 is by battery B, filter capacitor C
1, C
2, C
3And three terminal integrated voltage stabilizer IC
6(7806 type) formed, and 8 volts of output voltages are supplied with the each several part electricity consumption.
Claims (6)
1, a kind of chlorine detector is characterized in that being made up of sensor 1, indication amplifier 2, indicator 3, warning amplifier 4, optical alarm circuit 5, sound alarm circuit 6, delay circuit 7, power supply 8, asepwirator pump 9.
2,, it is characterized in that indication amplifier 2 wherein is made up of integrated circuit, resistance, electric capacity according to the described chlorine detector of claim 1.
3,, it is characterized in that warning amplifier 4 wherein is made up of integrated circuit and resistance according to the described chlorine detector of claim 1.
4,, it is characterized in that optical alarm circuit 5 wherein is made up of integrated circuit, resistance, electric capacity, diode, triode, light emitting diode according to the described chlorine detector of claim 1.
5,, it is characterized in that sound alarm circuit 6 wherein is made up of integrated circuit, resistance, electric capacity, diode, triode, loudspeaker according to the described chlorine detector of claim 1.
6,, it is characterized in that delay circuit 7 wherein is made up of integrated circuit, resistance, di-cap according to the described chlorine detector of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214946 CN2101291U (en) | 1991-09-03 | 1991-09-03 | Detecting and warning instrument for chlorine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214946 CN2101291U (en) | 1991-09-03 | 1991-09-03 | Detecting and warning instrument for chlorine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2101291U true CN2101291U (en) | 1992-04-08 |
Family
ID=4923091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91214946 Pending CN2101291U (en) | 1991-09-03 | 1991-09-03 | Detecting and warning instrument for chlorine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2101291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261240B (en) * | 2008-04-08 | 2011-03-16 | 杭州电子科技大学 | Chlorine gas concentration on-line monitoring device |
| CN104574884A (en) * | 2015-02-03 | 2015-04-29 | 深圳中核二三核电检修有限公司 | Detection method of alarm function of chlorine leakage alarm apparatus |
-
1991
- 1991-09-03 CN CN 91214946 patent/CN2101291U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261240B (en) * | 2008-04-08 | 2011-03-16 | 杭州电子科技大学 | Chlorine gas concentration on-line monitoring device |
| CN104574884A (en) * | 2015-02-03 | 2015-04-29 | 深圳中核二三核电检修有限公司 | Detection method of alarm function of chlorine leakage alarm apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |