CN112270812B - Alarm for detecting combustible gas - Google Patents
Alarm for detecting combustible gas Download PDFInfo
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- CN112270812B CN112270812B CN202011174970.5A CN202011174970A CN112270812B CN 112270812 B CN112270812 B CN 112270812B CN 202011174970 A CN202011174970 A CN 202011174970A CN 112270812 B CN112270812 B CN 112270812B
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- rod
- heat
- cavity
- shell
- combustible gas
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
Abstract
The invention discloses an alarm for detecting combustible gas, which relates to the technical field of combustible gas detection equipment and comprises a shell, wherein a catalytic rod is arranged in the shell, a first cavity is formed in the shell, an alarm mechanism for detecting combustible gas is arranged in the first cavity, a warning lamp is fixedly arranged on the shell, a linkage mechanism for controlling the fan to work is arranged in the shell, the fan is fixedly arranged on the shell, a heat conduction mechanism for conducting heat is arranged in the shell, and the heat conduction mechanism is fixedly connected with the output end of the linkage mechanism. The gas sensor is provided with the catalytic rod, the thermistor, the electromagnet, the conductive block, the magnet and the second wire, combustible gas is subjected to flameless combustion through the catalytic rod, the resistance value of the thermistor is changed through the generated heat, and the electromagnetic property is changed to realize the communication of different warning lamps.
Description
Technical Field
The invention relates to the technical field of combustible gas detection equipment, in particular to an alarm for detecting combustible gas.
Background
Natural gas refers to all gases naturally occurring in nature, including gases formed by various natural processes in the air space, water space and rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like). The definition of "natural gas" which has been common for a long time is a narrow definition from the energy point of view, and refers to a mixture of hydrocarbon and non-hydrocarbon gases which are naturally trapped in the formation. In petrogeology, oil field gas and gas field gas are commonly referred to. The composition is mainly hydrocarbon and contains non-hydrocarbon gas. Natural gas is stored in underground porous rock stratum, comprises oil field gas, gas field gas, coal bed gas, mud volcanic gas, biogenetic gas and the like, and is a high-quality fuel and chemical raw material if a small amount of natural gas is discharged from a coal bed. At present, combustible gases such as liquefied gas and natural gas are used as main energy sources in most areas of China, but the combustible gases are flammable and explosive, and once the combustible gases are leaked, the combustible gases can not only damage human bodies, but also run into open fire to cause explosion danger, so that indoor combustible gases need to be detected.
The existing indoor combustible gas detection device adopts a gas-sensitive probe, the detection mode is unstable and is easy to deviate, and after the combustible gas is detected, people need to open a window for ventilation, so that when nobody or people are asleep indoors, the situation that the personal safety and property safety of users are not timely harmed is easy to find out.
To this end, we propose an alarm for detecting combustible gas that solves the above problems.
Disclosure of Invention
The invention aims to improve the accuracy of detecting combustible gas and process emergency, and provides an alarm for detecting combustible gas.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an alarm for detecting combustible gas, includes the casing, be provided with the catalysis stick in the casing, first cavity has been seted up in the casing, be provided with the alarm mechanism who is used for detecting combustible gas in the first cavity, fixed mounting has the warning light on the casing, be provided with the link gear who is used for controlling fan work in the casing, fixed mounting has the fan on the casing, be provided with the heat conduction mechanism that is used for heat conduction in the casing, heat conduction mechanism and link gear's output fixed connection, the second cavity has been seted up in the casing, fixed mounting has the fixed block in the second cavity, the low temperature medium has been placed in the second cavity.
Optionally, the alarm mechanism includes second electric wire, conducting block, dead lever, magnet and electro-magnet, second electric wire fixed mounting is in first cavity, the quantity of second electric wire is three, second electric wire and conducting block sliding connection, fixed mounting has the dead lever in the first cavity, fixed mounting has magnet on the conducting block, fixed mounting has the electro-magnet in the first cavity.
Optionally, a spring is wound on the fixing rod, a limiting block is fixedly mounted on the fixing rod, a first electric wire is fixedly connected to the electromagnet, and a thermistor is fixedly mounted on the first electric wire.
Optionally, the linkage mechanism includes a piston, a first connecting rod and a conducting rod, a straight groove is formed in the casing, the piston is connected to the straight groove in a sliding mode, the piston is fixedly connected with the conducting rod through the first connecting rod, the conducting groove is installed in the straight groove, and the conducting groove is connected with the conducting rod in a sliding mode.
Optionally, the heat conducting mechanism includes a second connecting rod, a third connecting rod and a heat conducting rod, the second connecting rod is fixedly connected to the piston, the second connecting rod is rotatably connected to the third connecting rod, the third connecting rod is rotatably connected to the heat conducting rod, and the heat conducting rod is slidably connected to the fixing block.
Optionally, an air inlet is formed in the shell, a dust screen is fixedly mounted in the air inlet, and an air pump is fixedly mounted in the air inlet.
Optionally, a heat conduction hole is formed in the side wall of the first cavity, a heat conduction block is fixedly mounted in the heat conduction hole, and the number of the heat conduction holes is multiple.
Optionally, an air outlet is formed in the side wall of the straight groove, and a rubber plug is inserted into the air outlet.
Optionally, a conducting wire is fixedly connected to the fan, and the conducting wire is in contact connection with the conducting rod.
Optionally, the fixing block is provided with a plurality of through holes, and the heat conducting rod is fixedly provided with a heat insulation block.
Compared with the prior art, the invention has the following advantages:
1. the gas sensor is provided with the catalytic rod, the thermistor, the electromagnet, the conductive block, the magnet and the second wire, combustible gas is subjected to flameless combustion through the catalytic rod, the resistance value of the thermistor is changed through the generated heat, and the electromagnetic property is changed to realize the communication of different warning lamps.
2. The invention is provided with the piston, the conductive rod, the conductive groove, the lead and the fan, the pressure in the inner cavity is increased by generating heat and gas through the combustion of the combustible gas, the work of the fan is further controlled, the indoor gas flow can be accelerated, the indoor combustible gas is discharged in time, the concentration of the combustible gas is reduced, and the safety is ensured.
3. The heat conducting rod, the heat insulation block and the low-temperature medium are arranged, when combustible gas in air is more, heat generated by flameless combustion can be timely led out, the device is prevented from heating due to internal heat accumulation, meanwhile, the low-temperature medium can accelerate heat leading-out, and the service life of the device is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is an enlarged view of the portion C of FIG. 1 according to the present invention.
In the figure: the device comprises a shell 1, an inner cavity 2, an air inlet 3, a dust screen 4, an air pump 5, a catalytic rod 6, a rubber pad 7, a first cavity 8, a heat conduction hole 9, a heat conduction block 10, a first electric wire 11, a thermistor 12, an electromagnet 13, a fixed rod 14, a spring 15, a conductive block 16, a magnet 17, a limiting block 18, a second electric wire 19, a warning light 20, a straight groove 21, a piston 22, a first connecting rod 23, a conductive rod 24, a conductive groove 25, a wire 26, a fan 27, an exhaust port 28, a rubber plug 29, a second connecting rod 30, a third connecting rod 31, a first sliding groove 32, a second cavity 33, a fixed block 34, a second sliding groove 35, a heat conduction rod 36, a through hole 37 and a heat insulation block 38.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an alarm for detecting combustible gas comprises a shell 1, wherein an inner cavity 2 is formed in the shell 1, a catalytic rod 6 is fixedly installed in the inner cavity 2, a first cavity 8 is formed in the shell 1, an alarm mechanism for detecting combustible gas is arranged in the first cavity 8, and a rubber pad 7 is fixedly installed on the side wall of the inner cavity 2.
Alarm mechanism includes second electric wire 19, conducting block 16, dead lever 14, magnet 17 and electro- magnet 13, 19 fixed mounting of second electric wire are in first cavity 8, 19 quantity of second electric wire is three, 19 and 16 sliding connection of conducting block of second electric wire, 8 internal fixed mounting of first cavity has dead lever 14, dead lever 14 passes conducting block 16, 16 and 14 sliding connection of dead lever, fixed mounting has stopper 18 on the dead lever 14, fixed mounting has magnet 17 on the conducting block 16, 8 internal fixed mounting of first cavity has electro-magnet 13. Alarm mechanism's effect is that combustible gas content can open different warning light 20 when different in the air, play the suggestion warning effect to people, it is spacing, 18's effect prevents conducting block 16 and dead lever 14 and breaks away from, catalysis stick 6, thermistor 12, electro-magnet 13, conducting block 16, magnet 17 and second electric wire 19, make combustible gas carry out flameless combustion through catalysis stick 6, prevent that open flame from causing the explosion, the resistance that changes thermistor 12 through the heat that produces changes the size that the magnetic of electro-magnet 13 changes and realizes different warning light 20's intercommunication, it is more accurate convenient than direct with gas sensor detection, simultaneously avoid combustible gas's residue. The rubber pad 7 is used for preventing heat from being transmitted to a low-temperature medium at the beginning, so that the device detection is more accurate.
The shell 1 is fixedly provided with the warning lamps 20, the warning lamps 20 are in electric wire connection with the second electric wires 19, the number of the warning lamps 20 is three, and the shell 1 is internally provided with a linkage mechanism for controlling the fan 27 to work.
The linkage mechanism comprises a piston 22, a first connecting rod 23 and a conductive rod 24, a straight groove 21 is formed in the shell 1, the piston 22 is connected with the straight groove 21 in a sliding mode, the piston 22 is fixedly connected with the conductive rod 24 through the first connecting rod 23, a conductive groove 25 is fixedly installed in the straight groove 21, and the conductive groove 25 is connected with the conductive rod 24 in a sliding mode. Piston 22, conducting rod 24, conducting groove 25, wire 26 and fan 27, the pressure in inner chamber 2 is increased through the burning production heat of combustible gas and gas, and then control fan 27's work can accelerate indoor gas flow, in time with indoor combustible gas discharge, reduces combustible gas's concentration, guarantees the security.
The housing 1 is fixedly provided with a fan 27, and a heat conducting mechanism for conducting heat is arranged in the housing 1.
The heat conducting mechanism comprises a second connecting rod 30, a third connecting rod 31 and a heat conducting rod 36, the second connecting rod 30 is fixedly connected with the piston 22, the second connecting rod 30 is connected with the third connecting rod 31 in a rotating mode at one end, far away from the piston 22, of the second connecting rod 30, a first sliding groove 32 is formed in one end, connected with the third connecting rod 31, of the third connecting rod 31, one end, far away from the second connecting rod 30, of the third connecting rod 30 is connected with the heat conducting rod 36 in a rotating mode, a second sliding groove 35 is formed in the fixing block 34, and the heat conducting rod 36 is located in the second sliding groove 35 and is connected with the second sliding groove 35 in a sliding mode. The heat conducting rod 36, the heat insulation block 38 and the low-temperature medium can timely conduct out heat generated by flameless combustion when combustible gas in the air is more, so that the device is prevented from generating heat due to internal heat accumulation, meanwhile, the low-temperature medium can accelerate the conduction of the heat, and the service life of the device is prolonged.
The heat conduction mechanism is fixedly connected with the output end of the linkage mechanism, a second cavity 33 is formed in the shell 1, a fixed block 34 is fixedly installed in the second cavity 33, and a low-temperature medium is placed in the second cavity 33.
The spring 15 is wound on the fixing rod 14, one end of the spring 15 is fixedly connected to the conductive block 16, one end of the spring 15, far away from the conductive block 16, is fixedly connected to the bottom wall of the first cavity 8, the fixing rod 14 is fixedly provided with a limiting block 18, the electromagnet 13 is fixedly connected with a first electric wire 11, the first electric wire 11 is fixedly provided with the thermistor 12, and the first electric wire 11 is fixedly arranged on the inner wall of the first cavity 8. The function of the spring 15 is that when the device returns to normal, the conductive block 16 can return to the original state under the action of the spring 15.
An air inlet 3 is formed in the shell 1, a dust screen 4 is fixedly mounted in the air inlet 3, an air pump 5 is fixedly mounted in the air inlet 3, and the air inlet 3 is communicated with the inner cavity 2. The dust screen 4 is used for preventing dust from entering the device and ensuring the use efficiency of the device, and the air pump 5 is used for accelerating air to enter and improving the detection efficiency.
The heat conduction holes 9 are formed in the side wall of the first cavity 8, heat conduction blocks 10 are fixedly mounted in the heat conduction holes 9, the number of the heat conduction holes 9 is multiple, and the heat conduction holes 9 are communicated with the first cavity 8 and the inner cavity 2. The heat-conducting hole 9 and the heat-conducting block 10 function to conduct heat into the first cavity 8 so that the thermistor 12 can work normally, and the heat-conducting block 10 function to prevent the introduced gas from entering the first cavity 8.
An air outlet 28 is arranged on the side wall of the straight groove 21, a rubber plug 29 is inserted in the air outlet 28, and the air outlet 28 is positioned on the left side of the piston 22. The function of the exhaust port 28 is to exhaust the gas, equilibrate the internal pressure, so that the fan 27 is turned off.
The fan 27 is fixedly connected with a lead 26, and the lead 26 is in contact connection with the conductive rod 24. The wires 26 make contact with the conductive bars 24 to form a circuit path so that the fan 27 can normally operate.
The fixing block 34 is provided with a plurality of through holes 37, and the heat conducting rod 36 is fixedly provided with a heat insulation block 38. The through holes 37 serve to accelerate heat conduction, and the heat insulating blocks 38 serve to prevent heat from being initially conducted out through the heat conducting bars 36, thereby improving the accuracy of the device.
The working principle is as follows:
firstly, the air pump 5 pumps air into the inner cavity 2, the combustible gas is contacted with the catalytic rod 6 to generate flameless combustion, heat generated by the flameless combustion enters the first cavity 8 through the heat conduction hole 9, the resistance value of the thermistor 12 is reduced along with the rise of temperature, the current in the first wire 11 is increased, the magnetism of the electromagnet 13 is increased, the movement distance of the electromagnet 13 for pushing the conductive block 16 is determined according to the quantity of the heat generated by the combustion, so that the communication of different warning lamps 20 is determined, a warning effect is realized for a user, the increase of the pressure in the inner cavity 2 due to the rise of the heat pushes the piston 22 to move rightwards, and the conductive rod 24 is pushed to slide in the conductive groove 25.
If the combustible gas content in the air is higher, the current-conducting rod 24 can be in contact with the conducting wire 26, so that the circuit is communicated, the fan 27 is enabled to work to accelerate the flowing and discharging of the indoor air, and when the piston 22 moves rightwards, the heat-conducting rod 36 is driven to move downwards through the second connecting rod 30 and the third connecting rod 31 to conduct heat to the low-temperature medium, and the situation that the combustible gas burns continuously to cause the temperature rise to affect the detection result is prevented.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. An alarm for detecting combustible gas, which comprises a shell (1) and is characterized in that, a catalytic rod (6) is arranged in the shell (1), a first cavity (8) is arranged in the shell (1), an alarm mechanism for detecting combustible gas is arranged in the first cavity (8), a warning lamp (20) is fixedly arranged on the shell (1), a linkage mechanism for controlling the fan (27) to work is arranged in the shell (1), a fan (27) is fixedly arranged on the shell (1), a heat conducting mechanism for conducting heat is arranged in the shell (1), the heat conducting mechanism is fixedly connected with the output end of the linkage mechanism, a second cavity (33) is arranged in the shell (1), a fixed block (34) is fixedly arranged in the second cavity (33), and a low-temperature medium is placed in the second cavity (33);
the linkage mechanism comprises a piston (22), a first connecting rod (23) and a conducting rod (24), a straight groove (21) is formed in the shell (1), the piston (22) is connected in the straight groove (21) in a sliding mode, the piston (22) is fixedly connected with the conducting rod (24) through the first connecting rod (23), a conducting groove (25) is installed in the straight groove (21), and the conducting groove (25) is connected with the conducting rod (24) in a sliding mode;
the heat conducting mechanism comprises a second connecting rod (30), a third connecting rod (31) and a heat conducting rod (36), the second connecting rod (30) is fixedly connected with the piston (22), one end, far away from the piston (22), of the second connecting rod (30) is rotatably connected with the third connecting rod (31), a first sliding groove (32) is formed in one end, connected with the third connecting rod (31), of the second connecting rod (30), one end, far away from the second connecting rod (30), of the third connecting rod (31) is rotatably connected with the heat conducting rod (36), a second sliding groove (35) is formed in the fixed block (34), and the heat conducting rod (36) is located in the second sliding groove (35) and is in sliding connection with the second sliding groove (35);
a lead (26) is fixedly connected to the fan (27), and the lead (26) is in contact connection with the conductive rod (24);
an inner cavity (2) is formed in the shell (1), a catalytic rod (6) is fixedly arranged in the inner cavity (2), and a rubber pad (7) is fixedly arranged on the side wall of the inner cavity (2);
heat conduction holes (9) are formed in the side wall of the first cavity (8), heat conduction blocks (10) are fixedly mounted in the heat conduction holes (9), and the number of the heat conduction holes (9) is multiple;
the air pump (5) pumps air into the inner cavity (2), combustible gas is in contact with the catalytic rod (6), flameless combustion is generated, heat enters the first cavity (8) through the heat conduction hole (9), the heat and the gas are generated through combustion of the combustible gas to increase the pressure in the inner cavity (2), the increase of the heat causes the increase of the pressure in the inner cavity (2) to push the piston (22) to move rightwards, and further the conductive rod (24) is pushed to slide in the conductive groove (25);
if the content of combustible gas in the air is high, the conductive rod (24) is in contact with the conducting wire (26), the circuit is communicated, the fan (27) works to accelerate the flow and discharge of indoor air, and when the piston (22) moves rightwards, the heat conducting rod (36) is driven to move downwards through the second connecting rod (30) and the third connecting rod (31) to conduct heat to a low-temperature medium.
2. The alarm for detecting combustible gas of claim 1, wherein the alarm mechanism comprises a second wire (19), a conductive block (16), a fixing rod (14), a magnet (17) and an electromagnet (13), the second wire (19) is fixedly installed in the first cavity (8), the number of the second wire (19) is three, the second wire (19) is slidably connected with the conductive block (16), the fixing rod (14) is fixedly installed in the first cavity (8), the magnet (17) is fixedly installed on the conductive block (16), and the electromagnet (13) is fixedly installed in the first cavity (8).
3. The alarm for detecting combustible gas according to claim 2, wherein a spring (15) is wound on the fixing rod (14), a limiting block (18) is fixedly installed on the fixing rod (14), a first electric wire (11) is fixedly connected to the electromagnet (13), and a thermistor (12) is fixedly installed on the first electric wire (11).
4. The alarm for detecting combustible gas according to claim 1, characterized in that an air inlet (3) is formed in the housing (1), a dust screen (4) is fixedly installed in the air inlet (3), and an air pump (5) is fixedly installed in the air inlet (3).
5. The alarm for detecting combustible gas according to claim 4, characterized in that the side wall of the straight groove (21) is provided with an air outlet (28), and a rubber plug (29) is inserted into the air outlet (28).
6. The alarm for detecting combustible gas according to claim 1, wherein a plurality of through holes (37) are formed in the fixing block (34), and a heat insulation block (38) is fixedly mounted on the heat conducting rod (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174970.5A CN112270812B (en) | 2020-10-28 | 2020-10-28 | Alarm for detecting combustible gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174970.5A CN112270812B (en) | 2020-10-28 | 2020-10-28 | Alarm for detecting combustible gas |
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| CN112270812A CN112270812A (en) | 2021-01-26 |
| CN112270812B true CN112270812B (en) | 2022-04-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112904957A (en) * | 2021-01-27 | 2021-06-04 | 张玉香 | Intelligent manufacturing mainboard protective equipment for internet computer system |
| CN115876848B (en) * | 2022-12-03 | 2023-07-14 | 临沂临工重托机械有限公司 | Intelligent paint spray booth combustible gas detection alarm device |
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