CN201514687U - Warner for acetylene leakage - Google Patents
Warner for acetylene leakage Download PDFInfo
- Publication number
- CN201514687U CN201514687U CN 200920222317 CN200920222317U CN201514687U CN 201514687 U CN201514687 U CN 201514687U CN 200920222317 CN200920222317 CN 200920222317 CN 200920222317 U CN200920222317 U CN 200920222317U CN 201514687 U CN201514687 U CN 201514687U
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- China
- Prior art keywords
- acetylene
- sensor
- circuit
- leakage alarm
- alarm according
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Abstract
The utility model discloses a warner for acetylene leakage. The warner for acetylene leakage comprises an acetylene sensor, a detection circuit and a warning circuit, wherein, the acetylene sensor is electrically connected with the detection circuit; the warning circuit is electrically connected with the detection circuit; and a self-checking circuit used for detecting whether the acetylene sensor works normally or not is connected to the acetylene sensor. The acetylene leakage warner can electrically detect whether the acetylene sensor works normally or not on the self-checking circuit, so that the utility model can give an alarm in time when an abnormal condition such as damage and the like occurs, and prompt a user to replace the sensor. Therefore, the utility model avoids the condition that grave accidents are caused because the sensor is damaged and cannot give an alarm in time when acetylene is leaked, so as to improve safety factor.
Description
Technical field
The utility model relates to a kind of gas leakage alarm, relates in particular to a kind of acetylene leakage alarm.
Background technology
Along with the development of technology,, various safety practices often are set with sending out in accident in order to prevent the generation of various accidents.Such as in places such as toxic gas, flammable explosive gas, leakage alarm is set, in case taking place, leak case promptly reports to the police, detecting maintenance and withdraw to operating personnel provides important references, thereby avoids the generation of major accident.
Acetylene acts on huge in commercial production, is the requisite raw materials of a lot of industrial products of preparation.But its chemical property is active, very easily burns and blasts.Usually all the acetylene leakage alarm can be set in the workplace of using acetylene, report to the police,, avoid the generation of security incident so that operating personnel in time take measures in case acetylene takes place to reveal promptly.
But the acetylene sensor as the most important parts of acetylene leakage alarm has serviceable life, and have 1 year, what have may be longer.Can't judge in the prior art when the acetylene sensor lost efficacy, and whether the acetylene leakage alarm is in normal operating conditions.Just there is serious potential safety hazard in this, in case situations such as damage of acetylene sensor or circuit breaker, acetylene leakage alarm cisco unity malfunction, if acetylene takes place at this moment to be revealed, consequence is hardly imaginable.
The utility model content
In view of the problems referred to above of prior art, the purpose of this utility model provides a kind of acetylene leakage alarm with self-checking function.
To achieve these goals, the utility model provides a kind of acetylene leakage alarm, comprise acetylene sensor, testing circuit and warning circuit, described acetylene sensor is electrically connected with described testing circuit, described warning circuit is electrically connected with described testing circuit, it is characterized in that, also be connected with on the described acetylene sensor and detect its whether normally self-checking circuit.
As preferably, described self-checking circuit comprises two input nand gates and first hummer, and the input end of described two input nand gates connects the resistance output terminal and the electrode tip of described acetylene sensor respectively, and output terminal connects described first hummer.
As preferably, described testing circuit comprises comparer and divider resistance, one end ground connection of described divider resistance, the other end connects the electrode output of described acetylene sensor and an input end of described comparer, another input end of described comparer connects reference voltage, and the output terminal of described comparer connects described warning circuit.
As preferably, described acetylene sensor is the metal oxide semiconductor type.
As preferably, described acetylene sensor is a contact pin type.
As preferably, described acetylene sensor is a heater-type slug type SnO 2 gas-sensitive element.
As preferably, described warning circuit is a sound light alarming circuit.
As preferably, described sound light alarming circuit comprises the light emitting diode and second hummer.
The beneficial effects of the utility model are, whether electro-detection acetylene sensor is normal on the self-checking circuit, if abnormal conditions such as breaking-up are in time reported to the police, point out more emat sensor, avoided can not revealing warning in time to acetylene because sensor damages, the situation that causes major accident to take place has improved safety coefficient, and it is simple in structure, and is easy to operate.
Description of drawings
Fig. 1 is the principle schematic of the embodiment of acetylene leakage alarm of the present utility model.
Fig. 2 is the circuit diagram of Fig. 1.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
The principle schematic of acetylene leakage alarm as shown in Figure 1, comprise acetylene sensor 1, testing circuit 2 and warning circuit 3, acetylene sensor 1 is electrically connected with testing circuit 2, whether normally warning circuit 3 is electrically connected with testing circuit 2, also be connected with on the acetylene sensor 1 to detect its self-checking circuit 4.
Provide a kind of physical circuit figure in the present embodiment, but it is not unique, those skilled in the art can adopt different circuit to realize under principle of the present utility model.
Self-checking circuit 4 comprises that the input end of two input nand gates 41 and first hummer, 42, two input nand gates 41 connects the resistance output terminal and the electrode tip of acetylene sensor 1 respectively, and output terminal connects first hummer 42.
After powering on, if acetylene sensor 1 occurs that electrode opens circuit or the situation of resistance wire fracture under, it is undesired that high level of two input nand gates, 41 outputs, first hummer 42 send 1 work of sound prompting acetylene sensor, and operating personnel can in time overhaul or change acetylene sensor 1.If acetylene sensor 1 is working properly, then the same with prior art, acetylene alarm operate as normal, whether have reveal acetylene situation occur, in case occur revealing if detecting, the voltage of an end that is connected with divider resistance 21 of the comparer 22 of testing circuit 2 is higher than the reference voltage of the other end, the output high level, diode 31 is luminous, and second hummer 32 is sounded, acetylene appears in prompting to be revealed, and operating personnel determine maintenance still in time to withdraw as the case may be.
So, acetylene leakage alarm of the present utility model always works under the effective status, has avoided can not revealing timely the warning to acetylene because sensor damages, and the situation that causes major accident to take place has improved safety coefficient.And the utility model only installed two input nand gates 41 and first hummer 42 additional, and is simple in structure, uses very convenient.
Those skilled in the art should be understood that the technical solution of the utility model is applicable to the acetylene leakage alarm incessantly, and are also applicable in other ejusdem generis alarm, and difference only is to change different sensors according to the difference of detected object.Such as methane, hydrogen fluoride, ethene or the like, change its corresponding methane transducer, hydrogen fluoride sensor, ethylene sensor, use principle of the present utility model can realize equally.
Above embodiment is an exemplary embodiment of the present utility model only, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in the protection domain of the present utility model.
Claims (8)
1. acetylene leakage alarm, comprise acetylene sensor, testing circuit and warning circuit, described acetylene sensor is electrically connected with described testing circuit, described warning circuit is electrically connected with described testing circuit, it is characterized in that, also be connected with on the described acetylene sensor and detect its whether normally self-checking circuit.
2. acetylene leakage alarm according to claim 1, it is characterized in that, described self-checking circuit comprises two input nand gates and first hummer, the input end of described two input nand gates connects the resistance output terminal and the electrode tip of described acetylene sensor respectively, and output terminal connects described first hummer.
3. acetylene leakage alarm according to claim 1, it is characterized in that, described testing circuit comprises comparer and divider resistance, one end ground connection of described divider resistance, the other end connects the electrode output of described acetylene sensor and an input end of described comparer, another input end of described comparer connects reference voltage, and the output terminal of described comparer connects described warning circuit.
4. acetylene leakage alarm according to claim 1 is characterized in that, described acetylene sensor is the metal oxide semiconductor type.
5. acetylene leakage alarm according to claim 4 is characterized in that, described acetylene sensor is a contact pin type.
6. acetylene leakage alarm according to claim 4 is characterized in that, described acetylene sensor is a heater-type slug type SnO 2 gas-sensitive element.
7. acetylene leakage alarm according to claim 1 is characterized in that, described warning circuit is a sound light alarming circuit.
8. acetylene leakage alarm according to claim 7 is characterized in that, described sound light alarming circuit comprises the light emitting diode and second hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222317 CN201514687U (en) | 2009-09-01 | 2009-09-01 | Warner for acetylene leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222317 CN201514687U (en) | 2009-09-01 | 2009-09-01 | Warner for acetylene leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514687U true CN201514687U (en) | 2010-06-23 |
Family
ID=42486098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920222317 Expired - Lifetime CN201514687U (en) | 2009-09-01 | 2009-09-01 | Warner for acetylene leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514687U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968460A (en) * | 2010-09-21 | 2011-02-09 | 淮南润成科技有限公司 | Low-concentration methane sensor |
| CN107781647A (en) * | 2017-09-25 | 2018-03-09 | 武汉工程大学 | A kind of long-tube trailer reveals real-time monitoring and alarming device equipment |
-
2009
- 2009-09-01 CN CN 200920222317 patent/CN201514687U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968460A (en) * | 2010-09-21 | 2011-02-09 | 淮南润成科技有限公司 | Low-concentration methane sensor |
| CN107781647A (en) * | 2017-09-25 | 2018-03-09 | 武汉工程大学 | A kind of long-tube trailer reveals real-time monitoring and alarming device equipment |
| CN107781647B (en) * | 2017-09-25 | 2024-02-02 | 武汉工程大学 | Long-tube trailer leakage real-time monitoring alarm equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |