CN205643142U

CN205643142U - Gas detection appearance

Info

Publication number: CN205643142U
Application number: CN201620417830.9U
Authority: CN
Inventors: 王灵玺
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-06
Filing date: 2016-05-06
Publication date: 2016-10-12
Anticipated expiration: 2026-05-06

Abstract

The utility model relates to a gas detection appearance, it includes casing, lower casing, power module, microprocessor, signal amplification module, filters drying device, gas sensor, liquid crystal display and audible -visual annunciator, upward the casing constitutes a cavity with lower casing lock together, goes up the casing and uses the seal with elastometic washer with the junction of lower casing, power module, microprocessor and signal amplification module all set up in the cavity, filter drying device, gas sensor, liquid crystal display and audible -visual annunciator and set up at last casing, gas sensor, liquid crystal display and audible -visual annunciator all are connected with microprocessor, filter the outside of drying device setting sensing head in gas sensor. The beneficial effects of the utility model are that: the detection precision is high, long service life, can go on carrying out wireless transmission to gas density, check -out time and alarm information etc, can shoot the environment around the gas detection appearance, small, simple installation.

Description

A kind of gas detector

Technical field

This utility model belongs to detection of gas instrument field, is specifically related to a kind of gas detector.

Background technology

Coal is the main energy sources of China, and in the disposable energy, shared ratio is more than 70%.In recent years Come, along with being further exacerbated by of global energy requirements, the production operation scale of each producing coal operation area also by Step expands, so that the quantity of highly gassy mine is being continuously increased in colliery, and the mine disaster frequency that gas explosion causes Take place frequently life.Therefore, for guaranteeing the safety in production in mine, need the concentration of gas is monitored in real time.

At present, domestic having developed polytype gas detector, firedamp sensor is in gas detector One of critical component, its sensitivity directly influences the degree of accuracy of detected gas density.But it is traditional Gas detector the most not probe to firedamp sensor take any safeguard procedures.It addition, traditional gas Detector all uses wired mode to transmit signal, and generally there is the shortcoming that volume is relatively big, install complexity.This Plant and use the wired mode of the transmission signals such as optical cable, electric power cable or signal cable to there is loaded down with trivial details, the circuit of wiring Dependency is strong and installs the shortcomings such as laying maintenance cost is bigger.

Utility model content

In order to solve the problems referred to above that prior art exists, this utility model provide length in a kind of service life, Volume is little, easy-to-install gas detector.

The technical scheme that this utility model is used is: a kind of gas detector include upper shell, lower house, Supply module, microprocessor, signal amplification module, filtration drying device, firedamp sensor, liquid crystal display Screen and audible-visual annunciator；Described upper shell and lower house snap together composition one cavity, described upper shell with The junction seal with elastometic washer of lower house；Described supply module, microprocessor and signal amplification module are all provided with Put in described cavity, described filtration drying device, firedamp sensor, LCDs and audible-visual annunciator It is arranged on described upper shell；Described firedamp sensor, LCDs and audible-visual annunciator all with described micro-place Reason device connects；Described filtration drying device is arranged on the outside of sensing head in described firedamp sensor.

Described gas detector is additionally provided with a radio receiving transmitting module, described radio receiving transmitting module and micro-process Device connects, and outside monitoring host computer sends information by described radio receiving transmitting module to described microprocessor and reads letter Number, information is transmitted to described monitoring host computer by described microprocessor by described radio receiving transmitting module.

Described radio receiving transmitting module uses bluetooth wireless transceiver or WIFI wireless transceiver.

Described gas detector is additionally provided with an infrared photography module, described infrared photography module and micro-process Device connects, and described microprocessor passes through described radio receiving transmitting module after processing the image information received Transmission is to outside monitoring host computer.

Around the center of described lower house, the outer rim of described lower house is uniformly fixedly installed three male part.

A hole is all offered in each described male part.

Described firedamp sensor uses Optical Fiber Methane Gas Sensor.

Described Optical Fiber Methane Gas Sensor include temperature control module, distributed feedback laser, optical fiber circulator, Reflective air chamber, PIN photodiode and photoelectric conversion module, described temperature control module swashs with distributed feedback Light device connects, and described temperature control module maintains institute by controlling the die temperature of described distributed feedback laser State the normal table work of distributed feedback laser；The light that described distributed feedback laser sends passes through institute Stating optical fiber circulator and enter described reflective air chamber, the light after described reflective air chamber is launched is again by described Optical fiber circulator enters described PIN photodiode, the optical signal that described PIN photodiode will detect Transmission to described photoelectric conversion module, described photoelectric conversion module transmit after converting optical signals into the signal of telecommunication to Described microprocessor

Owing to using above technical scheme, the beneficial effects of the utility model are: at firedamp sensor to environment In gas detect before, by arranging filtration drying device, the dust in environment is filtered, right Steam is dried, and accuracy of detection the most of the present utility model is high, and service life is long；Can carry out to watt This concentration, detection time and warning message etc. be wirelessly transferred, it is to avoid what wire transmission mode existed lacks Point；Surrounding can be shot, so that staff can understand this utility model gas in real time Environmental aspect around detector；Volume is little, simple installation.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of this utility model gas detector；

Fig. 2 is the external structure schematic diagram of this utility model gas detector；

Fig. 3 is the schematic diagram of Optical Fiber Methane Gas Sensor in this utility model.

In figure: 1, upper shell；2, lower house；3, supply module；4, microprocessor；5, signal amplifies Module；6, filtration drying device；7, firedamp sensor；8, LCDs；9, audible-visual annunciator； 10, radio receiving transmitting module；11, infrared photography module；21, male part；22, hole；71, temperature control mould Block；72, distributed feedback laser；73, optical fiber circulator；74, reflective air chamber；75, PIN light Electric diode；76, photoelectric conversion module.

Detailed description of the invention

With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.

As depicted in figs. 1 and 2, this utility model provides a kind of gas detector, it include upper shell 1, Lower house 2, supply module 3, microprocessor 4, signal amplification module 5, filtration drying device 6, gas Sensor 7, LCDs 8 and audible-visual annunciator 9.Upper shell 1 and lower house 2 snap together composition One cavity, for preventing air in environment from entering the cavity that upper shell 1 and lower house 2 are constituted making circuit Becoming to damage, upper shell 1 seals by rubber ring (not shown) with the junction of lower house 2.Power supply mould Block 3, microprocessor 4 and signal amplification module 5 are arranged in this cavity, filtration drying device 6, gas Sensor 7, LCDs 8 and audible-visual annunciator 9 are arranged on upper shell 1.Firedamp sensor 7, liquid Crystal display screen 8 and audible-visual annunciator 9 are all connected with microprocessor 4.Filtration drying device 6 is arranged on gas The outside of sensing head in sensor 7.For removing in the gas contacted with sensing head in firedamp sensor 7 Dust and steam, thus sensing head is played cleaning and desiccation.

The gas density signal collected transmission is amplified by firedamp sensor 7 to signal amplification module 5, Signal after amplification transmits to microprocessor 4, the microprocessor 4 signal to receiving carry out analog digital conversion, Calculating etc. obtain gas concentration after processing, and transmit gas concentration and detection time etc. to liquid crystal display Screen 8 shows.It addition, the gas concentration obtained is carried out by microprocessor 4 with the alarm limits preset Relatively, and according to comparative result audible-visual annunciator 9 action is controlled.

In a preferred embodiment, as it is shown in figure 1, this utility model is additionally provided with a wireless receiving and dispatching Module 10, radio receiving transmitting module 10 is connected with microprocessor 4.Outside monitoring host computer is by wireless receiving and dispatching mould Block 10 sends information to microprocessor 4 and reads signal, and microprocessor 4 is by gas density, detection time and report Alarming informations etc. are transmitted to monitoring host computer by radio receiving transmitting module 10, thus realize being wirelessly transferred of information.Enter One step, radio receiving transmitting module 10 uses bluetooth wireless transceiver or WIFI wireless transceiver.

In a preferred embodiment, as it is shown in figure 1, be to obtain this utility model gas detector in real time Situation in surrounding, is additionally provided with an infrared photography module 11, infrared photography module in this utility model 11 are connected with microprocessor 4, microprocessor 4 image information received is processed after by wireless receipts Send out module 10 and transmit supreme outside monitoring host computer.

In a preferred embodiment, as in figure 2 it is shown, for ease of fixing, around the center of lower house 2, The outer rim of lower house 2 is uniformly fixedly installed three male part 21, each male part 21 is all opened It is provided with a hole 22, screw and hole 22 to coordinate and can be fixed on wall by this utility model, it is also possible to pass through This utility model is hung up by this hole 22.

In a preferred embodiment, in order to the methane gas in environment is carried out high-sensitivity detection, watt This sensor 7 can use Optical Fiber Methane Gas Sensor.As it is shown on figure 3, Optical Fiber Methane Gas Sensor Including temperature control module 71, distributed feedback laser 72, optical fiber circulator 73, reflective air chamber 74, PIN Photodiode 75 and photoelectric conversion module 76.Wherein, temperature control module 71 and distributed feedback laser 72 Connecting, temperature control module 71 maintains distributed feed-back by controlling the die temperature of distributed feedback laser 72 The normal table work of formula laser instrument 72.The light that distributed feedback laser 72 sends passes through optical fiber circulator 73 enter reflective air chamber 74, are reflected the light after formula air chamber 74 is launched and are entered by optical fiber circulator 73 PIN photodiode 75, PIN photodiode 75 by the optical signal transmission that detects to photoelectric conversion module 76, photoelectric conversion module 76 transmits to microprocessor 4 after converting optical signals into the signal of telecommunication.Owing to being provided with Reflective air chamber 74 so that light can twice through air chamber 74, add light by methane in environment GAS ABSORPTION Light path such that it is able to improve firedamp sensor 7 detection sensitivity.

This utility model is not limited to above-mentioned preferred forms, anyone under enlightenment of the present utility model all Other various forms of products can be drawn, no matter but in its shape or structure, make any change, every have Same as the present application or akin technical scheme, within all falling within protection domain of the present utility model.

Claims

1. a gas detector, it is characterised in that: it includes upper shell, lower house, supply module, micro- Processor, signal amplification module, filtration drying device, firedamp sensor, LCDs and sound and light alarm Device；Described upper shell and lower house snap together composition one cavity, described upper shell and the connection of lower house Place's seal with elastometic washer；Described supply module, microprocessor and signal amplification module are arranged at described cavity In, described filtration drying device, firedamp sensor, LCDs and audible-visual annunciator are arranged on described Housing；Described firedamp sensor, LCDs and audible-visual annunciator are all connected with described microprocessor；Institute State filtration drying device and be arranged on the outside of sensing head in described firedamp sensor.

2. a kind of gas detector as claimed in claim 1, it is characterised in that: it is additionally provided with wireless receipts Sending out module, described radio receiving transmitting module is connected with microprocessor, and outside monitoring host computer is by described wireless receiving and dispatching Module to described microprocessor send information read signal, described microprocessor by information by described wireless receipts Send out module transfer to described monitoring host computer.

3. a kind of gas detector as claimed in claim 2, it is characterised in that: described radio receiving transmitting module Use bluetooth wireless transceiver or WIFI wireless transceiver.

4. a kind of gas detector, it is characterised in that: it is additionally provided with one red Outer photographing module, described infrared photography module is connected with microprocessor, the described microprocessor figure to receiving By the transmission of described radio receiving transmitting module to outside monitoring host computer after processing as information.

5. a kind of gas detector as described in claim 1 or 2 or 3, it is characterised in that: under described The center of housing, is uniformly fixedly installed three male part in the outer rim of described lower house.

6. a kind of gas detector as claimed in claim 5, it is characterised in that: each described male part On all offer a hole.

7. a kind of gas detector as described in claim 1 or 2 or 3, it is characterised in that: described gas Sensor uses Optical Fiber Methane Gas Sensor.

8. a kind of gas detector as claimed in claim 7, it is characterised in that: described optical fiber methane gas Sensor includes temperature control module, distributed feedback laser, optical fiber circulator, reflective air chamber, PIN light Electric diode and photoelectric conversion module, described temperature control module is connected with distributed feedback laser, described temperature control Module maintains described distributed feedback laser by controlling the die temperature of described distributed feedback laser Normal table work；The light that described distributed feedback laser sends enters institute by described optical fiber circulator Stating reflective air chamber, the light after described reflective air chamber is launched enters described again by described optical fiber circulator PIN photodiode, the optical signal transmission extremely described opto-electronic conversion that described PIN photodiode will detect Module, described photoelectric conversion module converts optical signals into transmission extremely described microprocessor after the signal of telecommunication.