CN210071658U

CN210071658U - Gas detector

Info

Publication number: CN210071658U
Application number: CN201920644496.4U
Authority: CN
Inventors: 王鹤桥; 黄荣
Original assignee: HANGZHOU SAFEEX TECHNOLOGY Co Ltd
Current assignee: HANGZHOU SAFEEX TECHNOLOGY Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-02-14
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses a gas detector, including gas tank and gauge outfit, the air intake window has been seted up to the bottom of gas tank, and the inside fixed mounting of air intake window has the back-fire relief ventilated membrane, and one side inner wall fixed mounting of gas tank has two laser emission receiver, and the venthole has been seted up at the top of gas tank one side, and one side fixed mounting inside the venthole has the solenoid valve, and the inside opposite side fixed mounting of venthole has the fan, and the top of gas tank inlays with the first recess of seting up in gauge outfit casing bottom and establishes the connection. The utility model relates to a gas detector, this gas detector are longe-lived, and non-maintaining, the accuracy is high, through two laser emission receiver of installation, one of them laser emission receiver is used for launching measuring beam, and another laser emission receiver is used for launching reference beam, carries out the beam detection with the reflection principle equally, and reference beam's frequency is not by the light beam that is influenced by detected gas.

Description

Gas detector

Technical Field

The utility model relates to a detector, in particular to gas detector.

Background

At present, as is well known, a semiconductor gas sensor based on a semiconductor detection principle, a catalytic combustion gas sensor (also called a black-and-white element), an electrochemical gas sensor based on an electrochemical detection principle, an infrared gas sensor based on an infrared light detection principle, and an ultraviolet gas sensor based on an ultraviolet light detection principle (abbreviated as a PID sensor) are commonly used for detecting combustible gas or toxic gas. The gas sensors are widely used in the field of gas detection, but the common characteristic of the gas sensors is that the sensitivity is greatly attenuated along with the prolonging of the service time, and the problem of sensitivity to humidity is common. These sensors are characterized by: the electrochemical gas sensor has good selectivity and short service life. The worst selectivity sensitivity, the longest service life and the worst precision of the semiconductor sensor are also achieved. The catalytic sensor has the characteristics of moderate precision and short service life. The infrared sensor has better comprehensive index and relatively better selectivity, but the spectral width is greatly influenced by humidity. The ultraviolet gas sensor has good selectivity, is particularly suitable for trace detection of some high molecular weight gases or steam, and has high price and shorter service life.

The existing gas detector gauge outfit is not easy to detach, is inconvenient to maintain the gas detector regularly, influences the service life of the gas detector, and simultaneously, the existing gas detector detects gas through a detection probe, so that the detection result is inaccurate easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas detector to solve the difficult dismantlement of the current gas detector gauge outfit that provides in the above-mentioned background art, inconvenient regular maintenance is to gas detector, influences gas detector's life, and current gas detector is at the gaseous in-process of surveying simultaneously, generally detects through test probe, causes the unsafe problem of testing result easily.

In order to achieve the above object, the utility model provides a following technical scheme: a gas detector comprises a gas box and a gauge head, wherein a gas inlet window is formed in the bottom end of the gas box, a fire-retardant breathable film is fixedly mounted inside the gas inlet window, two laser emission receivers are fixedly mounted on the inner wall of one side of the gas box, a gas outlet is formed in the top of one side of the gas box, a solenoid valve is fixedly mounted on one side inside the gas outlet, a fan is fixedly mounted on the other side inside the gas outlet, the top end of the gas box is embedded and connected with a first groove formed in the bottom end of a gauge head shell, U-shaped grooves are formed in the tops of the two sides of the gas box respectively, U-shaped blocks are connected inside the two U-shaped grooves in an inserting and penetrating mode, a plurality of springs are fixedly mounted on the groove wall of one side of each of the two second grooves at equal intervals, one ends of the plurality of springs are fixedly connected with one side of the two U-shaped blocks respectively, one ends of the two U, the inside of gauge outfit is seted up the cavity, the inside fixed mounting of cavity has microprocessor, two laser emission receiver and microprocessor electric connection.

As an optimal technical scheme of the utility model, the positive fixed mounting of gauge outfit has the display instrument, display instrument and microprocessor electric connection.

As an optimal technical scheme of the utility model, the size of U type piece end department and the internal diameter phase-match of second recess.

As an optimized technical scheme of the utility model, the gas tank set up evenly distributed's surperficial antiskid line.

As a preferred technical scheme of the utility model, one side fixed mounting of gauge outfit has fan control switch, solenoid valve control switch and laser emission receiver control switch, fan, solenoid valve and laser emission receiver are respectively through fan control switch, solenoid valve control switch and laser emission receiver control switch and gauge outfit internally mounted's battery electric connection.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the gas detector has long service life, no maintenance and high accuracy;

2. through two installed laser emission receivers, one of which is used for emitting a measuring beam and the other is used for emitting a reference beam, beam detection is carried out by the reflection principle, and the frequency of the reference beam is a beam which is not influenced by the gas to be detected;

3. the gas box and the gauge head are inserted through one end of the U-shaped block and the second groove, so that the gas box is convenient to mount and dismount and is convenient to replace;

4. through the air outlet hole and the fan arranged in the air outlet hole, the air can be conveniently pumped out from the air box after the detection is finished and the drying is finished.

Drawings

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

fig. 2 is a schematic diagram of the internal structure of the present invention.

In the figure: 1. a gas box; 2. a U-shaped block; 3. a gauge head; 4. an air intake window; 5. a laser transmitter-receiver; 6. a first groove; 7. a U-shaped groove; 8. a spring; 9. a second groove; 10. an air outlet; 11. an electromagnetic valve; 12. a fan; 13. a fire-retardant breathable film; 14. a display instrument; 15. a microprocessor.

Detailed Description

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.

Referring to fig. 1-2, the utility model provides a gas detector, which comprises a gas box 1 and a gauge head 3, wherein the bottom end of the gas box 1 is provided with a gas inlet window 4, a fire-retardant breathable film 13 is fixedly arranged inside the gas inlet window 4, two laser emitting receivers 5 are fixedly arranged on the inner wall of one side of the gas box 1, the top of one side of the gas box 1 is provided with a gas outlet 10, one side inside the gas outlet 10 is fixedly provided with a solenoid valve 11, the other side inside the gas outlet 10 is fixedly provided with a fan 12, the top end of the gas box 1 is embedded and connected with a first groove 6 arranged at the bottom end of a shell of the gauge head 3, the top of two sides of the gas box 1 is provided with U-shaped grooves 7, the U-shaped blocks 2 are inserted and connected inside the two U-shaped grooves 7, a plurality of springs 8 are fixedly arranged at equal distances from the groove wall of one side of the two second grooves 9, one ends of the two U-shaped blocks 2 are respectively inserted and connected with the second grooves 9 formed in the groove walls of the two sides of the first groove 6, a cavity is formed in the gauge outfit 3, a microprocessor 15 is fixedly mounted in the cavity, and the two laser emitting and receiving devices 5 are electrically connected with the microprocessor 15.

Preferably, the display instrument 14 is fixedly installed on the front surface of the gauge head 3, the display instrument 14 is electrically connected with the microprocessor 15, and the influence of the gas on the light beam can be conveniently and visually observed through the installed display instrument 14.

Preferably, the size of the end of the U-shaped block 2 matches with the inner diameter of the second groove 9, and the size of the end of the U-shaped block 2 matches with the inner diameter of the second groove 9, so that one end of the U-shaped block 2 can be conveniently inserted into the second groove 9.

Preferably, the surface of the gas box 1 is provided with anti-slip lines which are uniformly distributed, and the gas detector is convenient to hold stably through the arranged anti-slip lines.

Preferably, a fan control switch, an electromagnetic valve control switch and a laser transmitting receiver control switch are fixedly mounted on one side of the gauge head 3, and the fan 12, the electromagnetic valve 11 and the laser transmitting receiver 5 are respectively electrically connected with a storage battery mounted inside the gauge head 3 through the fan control switch, the electromagnetic valve control switch and the laser transmitting receiver control switch.

When the gas detector is used, when the gas detector is required to be detected and used, firstly, the laser transmitter-receiver 5 with the model of LB-0617 is opened through the control switch of the laser transmitter-receiver, one laser transmitter-receiver 5 is used for transmitting measuring beams, the measuring beams are sent by the transmitting end and returned to the receiving end for detection, the other laser transmitter-receiver 5 is used for transmitting reference beams, the beam detection is carried out by the reflection principle, wherein, the frequency of the measuring beams is the beams influenced by the detected gas, the frequency of the reference beams is the beams not influenced by the detected gas, when the gas detector works, if gas enters in the detecting chamber, the measuring beams can be influenced by the detected gas and are attenuated, at the moment, the reference beams are not attenuated, the data that will produce are transmitted to microprocessor 15 through the laser contrast that two laser emission receivers 5 sent and are handled, data after microprocessor 15 processing through the model can be "TMS 320F28034 PNT" show through display instrument 14, the gaseous influence to the light beam of observation of branch pipe of being convenient for, after detecting the completion, open respectively through solenoid valve control switch and fan control switch can be "2W 040-10-V" solenoid valve 11 and fan 12, take out the gas of gas tank 1 inside through fan 12, accomplish and detect.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The gas detector comprises a gas box (1) and a gauge head (3), and is characterized in that a gas inlet window (4) is formed in the bottom end of the gas box (1), a fire-retardant breathable film (13) is fixedly mounted in the gas inlet window (4), two laser emitting receivers (5) are fixedly mounted on the inner wall of one side of the gas box (1), a gas outlet (10) is formed in the top of one side of the gas box (1), a solenoid valve (11) is fixedly mounted on one side of the inside of the gas outlet (10), a fan (12) is fixedly mounted on the other side of the inside of the gas outlet (10), the top end of the gas box (1) is connected with a first groove (6) formed in the bottom end of a shell of the gauge head (3) in an embedded manner, U-shaped grooves (7) are formed in the tops of the two sides of the gas box (1), and U-shaped blocks (2) are alternately connected in the U, two the one end of U type piece (2) alternates with second recess (9) that first recess (6) both sides cell wall was seted up respectively and is connected, two the equal equidistance fixed mounting in one side cell wall of second recess (9) has a plurality of spring (8), a plurality of the one end of spring (8) respectively with one side fixed connection of two U type pieces (2), the cavity has been seted up to the inside of gauge outfit (3), the inside fixed mounting of cavity has microprocessor (15), two laser emission receiver (5) and microprocessor (15) electric connection.

2. A gas sensor according to claim 1, wherein: the front surface of the gauge outfit (3) is fixedly provided with a display instrument (14), and the display instrument (14) is electrically connected with the microprocessor (15).

3. A gas sensor according to claim 1, wherein: the size of the end of the U-shaped block (2) is matched with the inner diameter of the second groove (9).

4. A gas sensor according to claim 1, wherein: the surface of the gas box (1) is provided with anti-skid grains which are uniformly distributed.

5. A gas sensor according to claim 1, wherein: one side fixed mounting of gauge outfit (3) has fan control switch, solenoid valve control switch and laser emission receiver control switch, fan (12), solenoid valve (11) and laser emission receiver (5) are respectively through fan control switch, solenoid valve control switch and laser emission receiver control switch and gauge outfit (3) internally mounted's battery electric connection.