CN213843174U

CN213843174U - Gas detector

Info

Publication number: CN213843174U
Application number: CN202022715107.8U
Authority: CN
Inventors: 赵道乾; 张晴; 李振华; 郑晓莹; 刘亚南; 韩晓亚; 王磊; 李胜; 何宏磊
Original assignee: Henan New Net Testing Service Co ltd
Current assignee: Henan New Net Testing Service Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-30
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a gas detector, including shell, the intake pipe of setting at the shell top, the inside detection module who is used for detecting gas that is provided with of shell, the shell openly still is provided with display screen, on & off switch, function key, pilot lamp, all is connected with the circuit board that sets up in the shell inside, reasonable in design, make full use of shell inner space, the button position is reasonable compact, and small easily carrying can detect gas type and can detect gas concentration again, convenient and fast, easy operation.

Description

Gas detector

Technical Field

The utility model relates to a detect technical field, especially relate to a gas detector.

Background

The gas detector is an instrument and meter tool for detecting gas leakage concentration, mainly utilizes a gas sensor to detect the types of gases existing in the environment, the gas sensor is a sensor for detecting the components and the content of the gases, the commonly used gas sensor can detect oxygen, hydrogen sulfide, carbon monoxide and combustible gases generally, wherein the hydrogen sulfide and the carbon monoxide gases can be matched with other gases according to the detection requirements of places, the special chip technology of the gas detector greatly improves various performances such as response time and stability during gas detection, and meanwhile, the service life of a battery is greatly prolonged. Harmful gases in production life may exist in both raw materials for production, such as most Organic Chemical Substances (VOCs) and byproducts of various processes in the production process, such as ammonia, carbon monoxide, hydrogen sulfide, etc., which are the most dangerous factors causing the greatest harm to workers, and such harm includes not only immediate harm, such as physical discomfort, morbidity, mortality, etc., but also long-term harm to human bodies, such as disability. Canceration, etc., the detection of these toxic and harmful gases is a problem that our developing countries should begin to draw full attention to. However, some existing detection instruments are not provided with a protection device when not used for a long time, impurities such as dust and dirt in the environment can enter the detection instruments to damage the instruments, some detection instruments can only detect a single gas type, some detection instruments are too large in size and inconvenient to use, some detection instruments can only detect the gas containing a certain gas and cannot detect the concentration of the gas, and great potential safety hazards exist if people are in the environment for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a gas detector.

The utility model discloses a realize through following technical scheme: the utility model provides a gas detector, includes the shell, sets up circuit board, the electricity of inside the shell and connects the intake pipe that the circuit board is used for detecting gaseous detection module and intercommunication shell inside and outside, the one end of admitting air of intake pipe is provided with can dismantle the probe, and the intake pipe other end is through setting up air exhaust device and the detection module intercommunication inside the shell, detection module is including the seal box that is equipped with electrolyte, be provided with two reaction electrodes and a reference electrode in the electrolyte, be provided with the osmotic membrane that scribbles the catalyst between two reaction electrodes in the electrolyte, the gaseous menstruation detection module of air exhaust device suction, the air inlet threaded connection of one end and intake pipe on the probe, the other end is provided with the through-hole of taking the filter screen, be provided with the rubber protective cap of protection probe on the shell.

In order to further realize the utility model discloses, can prefer following technical scheme for use:

preferably, still including setting up display screen, on-off key, function key, the pilot lamp that is connected with the circuit board electricity in the shell front, still be provided with at least one on the shell and let the gaseous sensor window of the inside gas sensor contact of shell, the shell bottom is provided with the interface that charges of USB battery.

Preferably, a sealing rubber ring used for abutting against the inner wall of the air inlet pipe is arranged on the probe.

Preferably, the air inlet pipe is provided with an anti-falling projection for externally connecting a pipeline.

Preferably, the gas sensors are all arranged in the sensor windows and electrically connected with the circuit board, and buffering cotton is arranged between the gas sensors and the sensor windows.

Preferably, a buzzer and a vibrating motor for reminding are further arranged in the shell.

Preferably, the back of the shell is provided with a snap-in detachable battery cover and a portable belt clip.

Preferably, the display screen is an LCD digital display screen, and the indicator light is an LED explosion-proof light.

Preferably, the two sides of the shell along the length direction are respectively provided with a groove, and a plurality of anti-slip strips are arranged in the grooves.

The beneficial effects of the utility model reside in that: reasonable design, full utilization of the inner space of the shell, reasonable and compact key position, small volume and easy carrying, the joint of the shell and the key interface adopts an explosion-proof design, the safety performance in use is improved, a plurality of types of gas sensors are arranged, when the device is carried to enter a space suspected of having harmful gas, the gas sensor sends out buzzing and vibration to warn when sensing corresponding gas harmful to human bodies, the double warning improves the warning effect, and further when the concentration of various gases is to be detected, the rubber cap of the gas inlet is only required to be opened, the air pump is started, so that the surrounding gas enters the detection module of the device, can obtain the concentration of various surrounding gases without starting other detection equipment, has simple operation, the gas detection device can detect the types of the gas and the concentration of the gas, has multiple functions, saves equipment cost and reduces detection time.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is another perspective view of the probe of the present invention after being installed;

fig. 3 is another perspective view of the present invention;

FIG. 4 is an enlarged view of the utility model at 6;

FIG. 5 is a block diagram of the internal circuit connections of the present invention;

wherein: 1. the device comprises a shell, 2 parts of a display screen, 3 parts of an on-off key, 4 parts of a function key, 5 parts of a buzzer opening, 6 parts of a probe, 7 parts of an air inlet pipe, 8 parts of a probe cap, 9 parts of an indicator light, 10 parts of a sensor window, 11 parts of a reserved window, 12 parts of a battery cover, 13 parts of a waistband clip and 14 parts of a USB battery charging interface.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-5: the utility model provides a gas detector, includes shell 1, sets up the intake pipe 7 at the shell top, and intake pipe 7 is provided with at the air inlet of keeping away from the one end of shell 1 and can dismantle probe 6, and the intake pipe 7 other end communicates with the air exhaust device who sets up in shell 1 inside, and air exhaust device can adopt the miniature air pump of electron, and the miniature air pump of electron is small, and power consumption is little, extension battery life, and operating condition is stable. The gas outlet of the air pump is communicated with the receiving port on the detection module in the shell 1, the detection module comprises two reaction electrodes and a reference electrode which are arranged in the electrolyte, a permeable membrane coated with a catalyst is also arranged between the two reaction electrodes in the electrolyte, the detection module adds enough voltage between the reaction electrodes when detecting gas, the electrodes and the electrolyte are contacted with the gas pumped by the air pump, so that the gas to be detected which permeates the membrane coated with the catalyst is subjected to oxidation-reduction reaction, the gas is oxidized or reduced, the electrochemical reaction causes the current change flowing through an external circuit, the external circuit maintains the voltage passing through the detection module and the voltage of one electrode reverse reference detection module, an opposite reaction is generated on the reverse electrode, the reaction current generated during the gas electrolysis is measured through a circuit system in the device, and then the microprocessor therein calculates the gas concentration, and forms a digital signal that is fed back to the display screen 2. The integrated degree is high, the current is controlled by the oxidation degree of the gas to be researched at the working electrode, so that the gas supply is limited by diffusion, the detection module is linear output in direct proportion to the concentration of the gas, the signal is linearized before output, the linear output allows the gas concentration to be accurately measured, the correction is simple, only a bottom line and a point need to be corrected, the gas is stable along with time after correction, and the maintenance is less. Set up in screw thread one end can the precession air inlet on the probe 6, adopt threaded connection to strengthen the fastening nature of connection, it is clean to conveniently dismantle the change when 6 damages or blocks up to take place at the probe, and 6 other ends of probe are provided with the aperture that admits air of taking the filter screen, set up the filter screen and have blockked in the gas entering setting of dust and tiny particle and damage the precision instruments of inside. The shell 1 is provided with a hole for hanging a rope, the other end of the shell is connected with a rubber protective cap 8 of a probe, when the device does not use an air inlet, the rubber protective cap 8 covers the air inlet to prevent external dust, water vapor, dirt and the like from entering the device, protect the device from being polluted and prolong the service life of the device, the front of the shell 1 is also provided with a display screen 2, a switch key 3, a function key 4 and an indicator light 9 which are all connected with a circuit board arranged in the shell 1, the places contacted with the shell 1 are all provided with an anti-static rubber pad to prevent the electric spark generated in the device from generating a burning and explosion phenomenon when the device is operated in a combustible gas environment, thereby greatly increasing the safety when in use and ensuring the life and property safety of personnel, the shell 1 below the function key 4 is also provided with at least one sensor window 10 which leads a gas sensor in the shell 1 to be contacted with gas, the gas sensor can select different types of gas sensors with Kenqi brand, such as gas sensors of 200ppm nitric oxide and 0-1000ppm carbon monoxide, and different types of gas sensors are arranged, such as carbon monoxide gas sensors, nitric oxide gas sensors, methane gas sensors and the like, corresponding gas sensors can be arranged according to the requirements of customers, a reserved window 11 is reserved to meet different requirements of different requirements, the using method is diversified, the product competitiveness is strong, when the gas sensors in the gas sensor window 10 detect corresponding harmful gas, the gas sensors feed back to the circuit board, the indicator light 9 is on, the buzzer and the vibration motor arranged in the gas sensor window are activated to remind personnel of entering the range of the harmful gas, but the specific gas concentration cannot be known at the moment, the rubber protective cap 8 of the gas inlet is opened, the detection function is selectively started through the function key 4, the detection module can be provided with a type device of gas which needs to be detected, when the corresponding harmful gas is detected, the threshold value set by the detection module is reached, an electric signal is formed and fed back to the display screen 2, if the methane detection module is installed, when the concentration of methane in the environment reaches the set threshold value, the concentration of methane is displayed on the display screen 2, when the harmful gas in the environment is judged to reach the concentration harmful to a human body, if the methane detection module is a mixed harmful gas detection module, the concentration of mixed gas is obtained by detection, the concentration of gas with high concentration in the mixed gas is detected and then fed back to the display screen 2, measures are taken timely, such as evacuation of personnel, missing point searching and the like, the safety performance is greatly improved, the volume is small, the carrying is convenient, the use is simple, the bottom of the shell 1 is also provided with a USB charging interface 14 for charging the battery in the shell 1, the battery can be charged repeatedly, the pollution of the dry battery to the environment is reduced, and the service life is prolonged.

Furthermore, the probe 6 is provided with a sealing rubber ring which is used for abutting against the inner wall of the air inlet pipe 7, the rubber ring seals a gap between the probe 6 and the air inlet pipe 7, the sealing performance is enhanced, and the service life of the equipment is prolonged.

Further, be provided with the anti-drop arch that is used for external pipeline on the intake pipe 7, in some airtight spaces, the export is probably established at the top, can place inside external pipeline like oil tank, sump etc. detects out the harmful gas concentration of bottom, judges whether accord with the condition that personnel got into, and the application is nimble, satisfies multiple needs.

Further, the gas sensor is arranged on the inner side of a sensor window 10 arranged on the shell, buffering cotton is arranged between the gas sensor and the sensor window 10, and the gas sensor and the shell 1 are protected from being damaged by hard friction.

Furthermore, the back of the shell 1 is provided with a buckle type detachable battery cover and a belt clamp which is convenient for people to carry, when the battery is designed to be damaged at a charging port by adopting the buckle type, the battery can be detached for charging, and the belt clamp is convenient to carry.

Furthermore, the display screen 2 adopts an LCD digital display screen, and the indicator light 9 is an LED explosion-proof light, so that the explosion-proof grade is improved, and the safety coefficient is increased.

Furthermore, the two sides of the shell 1 in the length direction are respectively provided with a groove, and a plurality of anti-slip strips are arranged in the grooves, so that the friction force is increased, and the equipment is prevented from slipping.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a gas detector, includes the shell, sets up circuit board inside the shell, the electricity connect in the circuit board be used for gaseous detection module of detection and the inside intake pipe of intercommunication shell, its characterized in that: the one end of admitting air of intake pipe is provided with can dismantle the probe, and the intake pipe other end is through setting up air exhaust device and the detection module intercommunication inside the shell, detection module is including the seal box that is equipped with electrolyte, be provided with two reaction electrode and a reference electrode in the electrolyte, be provided with the osmotic membrane that scribbles the catalyst between two reaction electrode in the electrolyte, the gaseous menstruation detection module of air exhaust device suction, the air inlet threaded connection of one end and intake pipe on the probe, the other end is provided with the through-hole of taking the filter screen, be provided with the rubber protective cap of protection probe on the shell.

2. A gas detection instrument according to claim 1, wherein: still including setting up display screen, on-off key, function key, the pilot lamp that is connected at the shell openly and circuit board electricity, still be provided with at least one on the shell and let the gaseous sensor window of the inside gas sensor contact of shell, the shell bottom is provided with the interface that the USB battery charges.

3. A gas detection instrument according to claim 1, wherein: and a sealing rubber ring used for abutting against the inner wall of the air inlet pipe is arranged on the probe.

4. A gas detection instrument according to claim 1, wherein: the air inlet pipe is provided with an anti-falling bulge for connecting the external pipeline.

5. A gas detection instrument according to claim 2, wherein: the gas sensor is arranged in the sensor window and electrically connected with the circuit board, and buffering cotton is arranged between the gas sensor and the sensor window.

6. A gas detection instrument according to claim 1, wherein: and a buzzer and a vibration motor for reminding are also arranged in the shell.

7. A gas detection instrument according to claim 1, wherein: the back of the shell is provided with a buckle type detachable battery cover and a portable belt clamp.

8. A gas detection instrument according to claim 2, wherein: the display screen is an LCD digital display screen, and the indicator light is an LED explosion-proof light.

9. A gas detection instrument according to claim 1, wherein: the shell is respectively provided with a groove along the two sides of the length direction, and a plurality of anti-slip strips are arranged in the grooves.