CN110487879B - Gas alarm detection device - Google Patents
Gas alarm detection device Download PDFInfo
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- CN110487879B CN110487879B CN201910835370.XA CN201910835370A CN110487879B CN 110487879 B CN110487879 B CN 110487879B CN 201910835370 A CN201910835370 A CN 201910835370A CN 110487879 B CN110487879 B CN 110487879B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- G01N27/4162—Systems investigating the composition of gases, by the influence exerted on ionic conductivity in a liquid
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Abstract
The invention discloses a gas alarm detection device, which comprises a box body, wherein a partition plate is fixedly connected in the box body, a plurality of sound holes and air holes are respectively formed in the upper end and the side edge of the box body, a detection module, a control module and an air bag are arranged on the lower side of the partition plate, through holes are formed in the two sides of the air bag, a buzzer and a connecting block are arranged at the upper end of the partition plate, a warning lamp is arranged at the upper end of the connecting block, a pressing module is arranged in the connecting block, a trigger module is arranged in the pressing module, and the trigger module can reset and reset the control module. Pressing down through the button not only can realize extrudeing the gasbag, eliminating gas content in detecting the cavity, prevent that gas from piling up in detection module for a long time, corrode the noble metal electrode, increased the life of device, the button moves down in addition and can carry out linkage work to trigger module, realizes the start to reset zero clearing circuit on the control circuit board, closes bee calling organ, warning light, has realized detection module's zero clearing, whole simple structure is exquisite, stability is better.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a gas alarm detection device.
Background
The gas detector is an instrument tool for detecting gas leakage concentration, which comprises: portable gas detectors, hand-held gas detectors, stationary gas detectors, online gas detectors, and the like. Gas sensors are used to detect the types of gases present in the environment, gas sensors are sensors used to detect the composition and content of gases. The measurement principle is mainly based on a solid-state electrolysis method, a paramagnetic method, an electrochemical cell method, a chemiluminescence method and the like. However, the above techniques are all contact measurement, which is easy to cause poisoning of people using the detection device in industrial application, and the sensing probe is easy to corrode, which affects the service life of the instrument, and needs to be calibrated frequently during the use process to ensure the accuracy of the measurement. For example, in a workshop, under the condition of sulfur dioxide leakage, the sulfur dioxide needs to be detected due to the toxicity thereof, and in the conventional technology, the sensing probe is corroded due to the long-term exposure of the sensing probe in the gas to be detected, so that the service life is greatly shortened. In view of the above problems, a gas alarm detection device is needed.
Disclosure of Invention
The invention aims to solve the problems and provides a gas alarm detection device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gas alarm detection device comprises a box body, wherein a partition plate is fixedly connected in the box body, a plurality of sound holes are formed in the upper end of the box body, and a plurality of air holes are formed in the side face of the box body;
a detection module for detecting sulfur dioxide is arranged at the lower side of the partition plate, and a control module is arranged at the rear end of the detection module;
an air bag for emptying air at the lower side of the partition plate is arranged at the lower side of the partition plate, and through holes are formed in the two sides of the air bag;
a buzzer is arranged at the upper end of the partition plate;
a connecting block for connection is arranged in the middle of the upper side of the partition plate, an annular warning lamp is arranged at the upper end of the connecting block, and a pressing module for pressing the air bag is arranged in the connecting block;
and a trigger module for linkage is arranged in the pressing module, and the trigger module can reset and clear the control module.
Preferably, the detection module comprises a filter membrane with good sulfur dioxide permeability and two electrodes, one of the two electrodes is a noble metal cathode electrode, and the other of the two electrodes is a metal anode electrode with large ionization tendency.
Preferably, the control module comprises a single chip microcomputer, a control circuit board and a power supply, and the control module controls the start and stop of the buzzer and the warning lamp.
Compared with the prior art, the invention has the following advantages:
1. the principle of producing electrons through sulfur dioxide and noble metal oxidation is adopted to convert sulfur dioxide content percentage information in the air into an electric signal, and then the singlechip and the control circuit board are used for controlling the buzzer and the warning lamp to work to feed back the leakage of harmful gas in a workshop, so that the rapid processing is realized, the device is exquisite in structure and high in stability.
2. The adoption not only can realize pressing the gasbag through the button, eliminate gas content in the detection cavity, realize the gaseous clearance of detection in the detection module, prevent that gas from piling up in the detection module for a long time, corrode the noble metal electrode, the life of device has been increased, and can carry out linkage work to trigger module through moving down of button, the realization is to the start-up of reset zero clearing circuit on the control circuit board, with bee calling organ, the warning light is closed, the zero clearing of detection module has been realized and has been reset, whole simple structure is exquisite, stability is better.
Drawings
Fig. 1 is a schematic structural diagram of a gas alarm detection device according to the present invention;
fig. 2 is a schematic structural diagram of a pressing module of the gas alarm detection device according to the present invention;
FIG. 3 is a partial enlarged view of portion a of FIG. 3 in accordance with the present invention;
FIG. 4 is a flow chart of the operation of a gas alarm detection device according to the present invention;
fig. 5 is a reset circuit diagram of a gas alarm detection device according to the present invention.
In the figure: 1 box body, 2 baffles, 3 sound holes, 4 bleeder vents, 5 consider membrane, 6 electrodes, 7 control module, 8 risers, 9 connecting holes, 10 gasbags, 11 through-holes, 12 bee calling organ, 13 connecting blocks, 14 warning lights, 15 tray, 16 first spring, 17 vertical holes, 18 pressing post, 19 archs, 20 trigger grooves, 21 slider, 22 second spring, 23 trigger bars, 24 spout, 25 buttons, 26 filter.
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 to 3, a gas alarm detection device comprises a box body 1, wherein the upper end of the box body 1 is of a smooth cambered surface structure, the lower end of the box body 1 is cylindrical, a partition plate 2 is fixedly connected in the box body 1, a plurality of sound holes 3 are formed in the upper end of the box body 1, and a plurality of air holes 4 are formed in the side surface of the box body 1;
a detection module for detecting sulfur dioxide is arranged at the lower side of the clapboard 2, and a control module is arranged at the rear end of the detection module;
an air bag 10 for emptying air at the lower side of the partition board is arranged at the lower side of the partition board 2, and through holes 11 are arranged at the two sides of the air bag 10;
the upper end of the clapboard 2 is provided with a buzzer 12;
a connecting block 13 for connection is arranged in the middle of the upper side of the partition board 2, an annular warning lamp 14 is arranged at the upper end of the connecting block 13, the shape of the cross section of the warning lamp 14 is the same as that of the cross section of the connecting block, and a pressing module for pressing the air bag 10 is arranged in the connecting block 13;
a trigger module for linkage is arranged in the pressing module, and the trigger module can reset and clear the control module;
referring to fig. 1, the detection module comprises a filter membrane 5 with good sulfur dioxide permeability and two electrodes 6, one of the two electrodes 6 is a noble metal cathode electrode, the metal material of the cathode electrode is silver, the other one of the two electrodes 6 is a metal anode electrode with large ionization tendency, and the metal of the anode electrode is aluminum;
the control module 7 comprises a singlechip, a control circuit board and a power supply, and the control module 7 controls the start and stop of the buzzer 12 and the warning lamp 14;
two filter membranes 5 are fixedly connected below the partition plate 2, the rear sides of the two filter membranes 5 are respectively and fixedly connected with a silver metal cathode electrode 6 and an aluminum metal anode electrode 6, a cuboid with a through hole is arranged in the middle of the control module 7, the through hole of the control module 7 is fixedly connected with two vertical plates 8, the upper end and the lower end of each vertical plate 8 are respectively and fixedly connected with the partition plate 2 and the bottom wall of the box body 1, a connecting hole 9 is arranged on each vertical plate 8, an air bag 10 is arranged in the middle of the through hole, and the lower wall of the air bag 10 is fixedly connected with the bottom wall of the box body 5;
referring to fig. 1 and 3, the pressing module comprises a supporting block 15, first springs 16, vertical holes 17, pressing columns 18 and buttons 25, the buttons 25 are slidably connected to the middle positions of the connecting block 13 and the annular warning lamp 14, the pressing columns 18 are fixedly connected to the lower ends of the buttons 25, the lower ends of the pressing columns 18 are fixedly connected to the upper top end of the air bag 10, the vertical holes 17 are formed in the buttons 25 and the pressing columns 18, the vertical holes 17 penetrate through the upper top end of the air bag 10, the vertical holes 17 are communicated with the outer portion of the box body 1 and the inner portion of the air bag 10, arc-shaped grooves are formed in the upper ends of the vertical holes 17 to facilitate the attachment of thumbs of users and the buttons 25, the supporting block 15 is arranged on the lower side of the buttons 25, the supporting block 15 on the outer wall is fixedly connected to the inner wall of the connecting block 13, the inner wall of the supporting block 15 is slidably connected to the outer wall of the pressing columns 18, and the supporting block 15 is fixedly connected to the buttons 25 through the first springs 16; the connecting block 13 and the warning lamp 14 are fixedly connected with the upper end of the box body 1;
referring to fig. 4, the trigger module includes a protrusion 19, a trigger groove 20, a slider 21, a second spring 22 and a trigger rod 23, the left side of the extrusion column 18 is provided with the protrusion 19, the support block 15 is provided with the trigger groove 20, the slider 21 is arranged at the middle position in the trigger groove 20, the upper end and the lower end of the slider 21 are respectively connected with the upper wall and the lower wall of the trigger groove 20 through the second spring 22, the slider 21 is provided with the trigger rod 23, one end of the trigger rod 23 extends to the trigger groove 20 and the protrusion 19 on the pressing column 18 for cooperation, the other end of the trigger rod 23 penetrates through the connecting block 13 to extend onto the control module 7 and is connected with the reset circuit contact position of the control module 7, the connecting block 13 is provided with a sliding groove 24, and the trigger rod 23 is slidably connected with the sliding groove 24.
It is noted that a filter plate 26 is provided in the vertical bore 17 and the through-hole 11 of the gas capsule 10, the filter plate 26 preventing the passage of sulphur dioxide gas and the ingress of test gas into the test module 7.
Referring to fig. 5, the operating principle is that manual button reset requires a human to add a high level on the reset input RST. The common approach is to connect a button between the RST terminal and the positive supply VCC. When the button is manually pressed, the +5V level of VCC is directly applied to the RST terminal. The circuit for manual button reset is shown. The time requirement for resetting can be fully met because the button can be kept on for tens of milliseconds even if the action of a person is fast. In the design, the trigger rod 23 is used as a trigger device, when the trigger rod 23 moves left and right under the action of the protrusion 19, the button in the circuit is acted, the reset circuit in the single chip microcomputer works, so that the single chip microcomputer resets, the buzzer 13 and the warning lamp 14 are turned off, the control module 7 and the detection module are cleared, and the detection is carried out again.
When the detection device is used, the detection device is placed in an environment to be detected, sulfur dioxide gas to be detected enters the lower wall of the partition plate 2 through the air holes in the side wall of the box body 1, contacts with the silver cathode electrode 6 on the left side through the filter membrane 5, generates oxidation-reduction reaction to generate free electrons, the electrons flow to the anode through the current meter, lead metal is oxidized at the anode, the movement of the free electrons in the detection module is detected in the control module 7, the singlechip in the control module 7 works, the buzzer 12 and the annular warning lamp 14 work, the buzzer 12 buzzes and the warning lamp 14 flickers, the working personnel are reminded of leakage of the sulfur dioxide gas, and the working personnel perform inspection and maintenance;
after detection and maintenance, a worker presses the button 25 to enable the pressing column 18 to move downwards to compress the air bag 10, the upper end of a vertical hole 17 in the button is blocked by a thumb, the filter plate 26 prevents gas from entering the air bag 10, the volume of the air bag 10 is reduced after extrusion, the gas in the air bag 10 is discharged through a connecting hole 9 in a vertical plate 8, the gas flow rate is increased due to the fact that the connecting hole 9 is small, sulfur dioxide gas in the detection module 7 is discharged from the air holes 4, corrosion of a noble metal cathode electrode due to long-time accumulation of the gas is prevented, and the button 18 is reset due to the effect of the first spring 16 after the button 18 is pressed;
when the pressing column 18 moves downwards, the protrusion 19 on the pressing column 18 moves downwards along with the pressing column to touch the trigger rod 23, so that the sliding block connected with the trigger rod 23 moves in the trigger groove 20 under the action of the second spring 22, the trigger rod 23 slides in the sliding groove 24 in the connecting block 13, the other end of the trigger rod 23 touches a button in a reset circuit in the control module 7, the reset circuit in the control module 7 is started, the buzzer 12 and the warning lamp 14 are closed, and the button 25 can be pressed for multiple times to discharge a safety sheet of gas.
The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean "one and only one" unless specifically so stated, but rather "one or more.
Claims (2)
1. A gas alarm detection device comprises a box body (1), wherein a partition plate (2) is fixedly connected in the box body (1), a plurality of sound holes (3) are formed in the upper end of the box body (1), and a plurality of air holes (4) are formed in the side surface of the box body (1), and is characterized in that;
a detection module for detecting sulfur dioxide is arranged on the lower side of the partition plate (2), and a control module is arranged at the rear end of the detection module;
an air bag (10) used for emptying air at the lower side of the partition plate is arranged at the lower side of the partition plate (2), and through holes (11) are formed in two sides of the air bag (10);
a buzzer (12) is arranged at the upper end of the partition plate (2);
a connecting block (13) for connection is arranged in the middle of the upper side of the partition plate (2), an annular warning lamp (14) is arranged at the upper end of the connecting block (13), and a pressing module for pressing the air bag (10) is arranged in the connecting block (13);
a trigger module for linkage is arranged in the pressing module, and the trigger module can reset and clear the control module; the trigger module comprises a bulge (19), a trigger groove (20), a sliding block (21), a second spring (22) and a trigger rod (23), the bulge (19) is arranged on the left side of the extrusion column (18), the trigger groove (20) is arranged in the support block (15), the sliding block (21) is arranged in the middle of the trigger groove (20), the upper end and the lower end of the sliding block (21) are respectively connected with the upper wall and the lower wall of the trigger groove (20) through the second spring (22), the trigger rod (23) is arranged on the sliding block (21), one end of the trigger rod (23) extends to the trigger groove (20) and is matched with the bulge (19) on the pressing column (18), the other end of the trigger rod (23) penetrates through the connecting block (13) to extend to the control module (7) and is connected with the reset circuit contact position of the control module (7), the sliding groove (24) is arranged on the connecting block (13), the trigger rod (23) is connected with the sliding groove (24) in a sliding manner, after detection and maintenance, the staff presses the button (25) to enable the pressing column (18) to move downwards, the air bag (10) is compressed, the upper end of a vertical hole (17) in the button is blocked by a thumb, the filter plate (26) prevents gas from entering the air bag (10), the air bag (10) is reduced in size due to extrusion, the gas in the air bag (10) is discharged through a connecting hole (9) in a vertical plate (8), the gas flow rate is increased due to the fact that the connecting hole (9) is small, sulfur dioxide gas in the detection module is discharged from an air hole (4), the corrosion of a noble metal cathode electrode caused by long-time accumulation of the gas is prevented, and the button (25) is reset due to the effect of a first spring (16) after the button (25) is pressed; when the pressing column (18) moves downwards, the upper protrusion (19) of the pressing column (18) moves downwards along with the pressing column to touch the trigger rod (23), so that the sliding block connected with the trigger rod (23) moves in the trigger groove (20) under the action of the second spring (22), the trigger rod (23) slides in the sliding groove (24) in the connecting block (13), the other end of the trigger rod (23) touches a button in a reset circuit in the control module (7), the reset circuit in the control module (7) is started, the buzzer (12) and the warning lamp (14) are closed, and the button (25) can be pressed for multiple times to realize safe discharge of gas;
the detection module comprises a filter membrane (5) with good sulfur dioxide permeability and two electrodes (6), one of the two electrodes (6) is a noble metal cathode electrode, and the other one of the two electrodes (6) is a metal anode electrode with large ionization tendency.
2. The gas alarm detection device according to claim 1, wherein the control module (7) comprises a single chip microcomputer, a control circuit board and a power supply, and the control module (7) controls the opening and closing of the buzzer (12) and the warning lamp (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910835370.XA CN110487879B (en) | 2019-09-05 | 2019-09-05 | Gas alarm detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910835370.XA CN110487879B (en) | 2019-09-05 | 2019-09-05 | Gas alarm detection device |
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| CN110487879A CN110487879A (en) | 2019-11-22 |
| CN110487879B true CN110487879B (en) | 2022-06-21 |
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| JP2009104349A (en) * | 2007-10-23 | 2009-05-14 | Nohmi Bosai Ltd | Fire alarm |
| WO2013012382A1 (en) * | 2011-07-20 | 2013-01-24 | Logico2 Online Sarl | Device and system for gas leakage detection and alarm |
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