CN211263390U

CN211263390U - Multi-parameter gas detector

Info

Publication number: CN211263390U
Application number: CN201922191573.8U
Authority: CN
Inventors: 李华; 王立升; 黄小刚; 房栋
Original assignee: Shenzhen Eyesky Technology Co ltd
Current assignee: Shenzhen Eyesky Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-14
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a join in marriage gaseous detector more, include: detector main part, detection gas circuit, air inlet, filter equipment, trachea and sampling gas circuit, it includes to detect the gas circuit: set up in a plurality of cavity in the detector main part, set up in sensor in the cavity, set up in air pump in the detector main part, set up in the gas outlet at detector main part top to and the gas circuit of connecting gradually each cavity, air pump and gas outlet, filter equipment includes: the air inlet is arranged on the air inlet, the screen is arranged on the air plug, the absorbent cotton is arranged on the screen, and the air inlet nozzle is locked on the air inlet. The utility model discloses an adopt filter equipment to carry out gaseous preliminary treatment, filter gas by the cotton wool, the impurity in the screen cloth isolated gas improves and detects the precision, can effectively prevent to detect the gas circuit simultaneously and be blockked up by impurity, improves the life of detector.

Description

Multi-parameter gas detector

Technical Field

The utility model relates to a gaseous detection area especially relates to a join in marriage gaseous detector more.

Background

The multi-parameter gas detector is widely applied to occasions such as petroleum, petrifaction, chemical engineering, coal, metallurgy, underground tunnels, medicines, mechanical equipment, glass processing, rubber, chemical fertilizers, steel smelting, desulfurization and denitrification, cement plant boiler houses and the like, and is mainly used for detecting gases such as carbon monoxide, hydrogen sulfide, oxygen, methane and the like and alarming in an overrun mode. Most of gas circuits of the existing multi-parameter gas detector are simple in design and poor in gas tightness, and external and internal gas circuit pretreatment devices are few, so that the effect of pretreatment on sampled gas cannot be achieved, the service life of a sensor is directly shortened, and the accuracy of measured data is influenced.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing a join in marriage gaseous detector more, satisfy the demand of sampling gas preliminary treatment.

The technical scheme of the utility model as follows: there is provided a multi-parameter gas detector comprising: the detector main part, set up in inside detection gas circuit of detector main part, set up in the air inlet at detector main part top, set up in filter equipment on the air inlet, connection filter equipment's trachea and connection tracheal sampling gas circuit, it includes to detect the gas circuit: set up in a plurality of cavity in the detector main part, set up in sensor in the cavity, set up in air pump in the detector main part, set up in the gas outlet at detector main part top to and the gas circuit of connecting gradually each cavity, air pump and gas outlet, the air pump is provided with air pump entry and air pump export, the air pump entry passes through the gas circuit and is connected with the cavity, the air pump export passes through the gas circuit and is connected with the gas outlet, filter equipment includes: the air inlet is arranged on the air inlet, the screen is arranged on the air plug, the absorbent cotton is arranged on the screen, and the air inlet nozzle is locked on the air inlet.

Further, the chamber is provided with a chamber air inlet and a chamber air outlet, and the diameter of the chamber air inlet is larger than that of the chamber air outlet.

Furthermore, a sensor port is arranged on an air path between the air pump and the chamber, and the sensor port is connected with a pressure sensor.

Furthermore, the detector main part is provided with a gas circuit back plate, and the setting position of the gas circuit back plate corresponds to the detection gas circuit.

Further, the air path back plate is hot-melted on the detection air path in an ultrasonic welding mode.

Further, the sampling gas circuit includes: with the handle that the trachea is connected, with the intake pipe that the handle is connected and with intake-tube connection's the cap of admitting air, the intake pipe both ends all are provided with the external screw thread, handle and the cap of admitting air all are provided with the internal thread with intake-tube connection department, the external screw thread matches with the internal thread, handle and trachea connection department are provided with pagoda type and connect, the trachea cover is located on the pagoda type connects.

Adopt above-mentioned scheme, the utility model discloses an adopt filter equipment to carry out gaseous preliminary treatment, filter gas by the cotton wool, the impurity in the screen cloth isolated gas improves and detects the precision, can effectively prevent to detect the gas circuit simultaneously and be blockked up by impurity, improves the life of detector.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the detection gas circuit.

Fig. 3 is a schematic view of the assembly of the detector main body and the air path back plate.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the present invention provides a multi-parameter gas detector, which includes: the detector main part 1, set up in the inside detection gas circuit 2 of detector main part 1, set up in the air inlet 3 at 1 top of detector main part, set up in filter equipment 4 on the air inlet 3, connect filter equipment 4's trachea 5 and connection trachea 5's sampling gas circuit 6. The detection gas circuit 2 includes: six chambers 21 in the detector main body 1, sensors 22 in the chambers 21, air pumps 23 in the detector main body 1, air outlets 24 at the top of the detector main body 1, and air passages 25 sequentially connecting the chambers 21, the air pumps 23 and the air outlets 24. The air pump 23 is provided with an air pump inlet 231 and an air pump outlet 232, the air pump inlet 231 is connected with the chamber 21 through an air passage 25, and the air pump outlet 232 is connected with the air outlet 24 through the air passage 25. The filtering device 4 comprises: the air inlet device comprises an air plug 41 arranged on the air inlet 3, a screen 42 arranged on the air plug 41, absorbent cotton 43 arranged on the screen 42 and an air inlet nozzle 44 locked on the air inlet 3. During operation, the air pump 23 is started to form negative pressure, and air is sucked in through the sampling air path 6. The suction gas passes through the filter device 4, is filtered by the absorbent cotton 43, and is shielded from impurities such as dust mixed in the suction gas by the mesh 42. The inhaled gas gets into after detecting the gas circuit, gets into six cavities 21 in proper order, detects via sensor 22, detects the content of gas such as carbon monoxide, hydrogen sulfide, oxygen, methane in the inhaled gas, and when certain gas composition content exceeded the limit value in the inhaled gas, the tester sent out warning sound, and the operating personnel of being convenient for judges. Finally, the sucked gas enters the gas pump 23, passes through the gas path 25, and is finally discharged from the gas outlet 24. Filter gas through cotton wool 43 to by the impurity in the screen cloth 42 isolated gas, improve and detect the precision, can effectively prevent to detect gas circuit 2 simultaneously and blockked up by impurity, improve the life of detector.

The chamber 21 is provided with a chamber inlet 211 and a chamber outlet 212, and the diameter of the chamber inlet 211 is larger than that of the chamber outlet 212. The arrangement of large inlet and small outlet can prolong the stay time of the sucked gas in each chamber 21, so that the sucked gas is in full contact with the sensor 22, and the detection accuracy is improved.

A sensor port 26 is arranged on the air path 25 between the air pump 23 and the chamber 21, and the sensor port 26 is connected with a pressure sensor. The suction gas passes through the six chambers 21 in sequence, enters the sensor port 26, and comes into contact with the pressure sensor. Pressure sensor controls the running state of air pump 23, when the gas that detects in the gas circuit 2 reaches a quantitative, the pressure that detects in the gas circuit 2 can rise, when the pressure that detects in the gas circuit 2 reaches a definite value, pressure sensor sends a signal to the detector, the detector is controlled the inspiratory velocity of air pump 23, when guaranteeing that the very fast entering of inhaled gas ability detects gas circuit 2, make sensor 22 and inhaled gas ability abundant contact reaction to guarantee the accuracy of testing result.

Referring to fig. 3, the detector body 1 is provided with an air path back plate 11, and the position of the air path back plate 11 corresponds to the detection air path 2. The gas circuit back plate 11 is hot-melted on the detection gas circuit 2 in an ultrasonic welding mode, so that the airtightness of the whole detection gas circuit 2 is ensured.

The sampling gas circuit 6 includes: a handle 61 connected to the air tube 5, an air inlet tube 62 connected to the handle 61, and an air inlet cap 63 connected to the air inlet tube 62. The intake pipe 62 both ends all are provided with the external screw thread, handle 61 and the junction of cap 63 and intake pipe 62 all are provided with the internal thread, the external screw thread matches with the internal thread. The handle 61 is provided with the pagoda type joint with the trachea 5 junction, the trachea 5 cover is located on the pagoda type joint. The pagoda-shaped joint can be convenient for the sampling gas circuit 6 to be connected with the gas pipe 5, and is convenient for change the sampling gas circuit 6 of different specifications simultaneously to deal with the collection demands of different environments.

To sum up, the utility model discloses an adopt filter equipment to carry out gaseous preliminary treatment, filter gas by the cotton wool, the impurity in the screen cloth isolated gas improves and detects the precision, can effectively prevent to detect the gas circuit simultaneously and be blockked up by impurity, improves the life of detector.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A multi-parameter gas detector, comprising: the detector main part, set up in inside detection gas circuit of detector main part, set up in the air inlet at detector main part top, set up in filter equipment on the air inlet, connection filter equipment's trachea and connection tracheal sampling gas circuit, it includes to detect the gas circuit: set up in a plurality of cavity in the detector main part, set up in sensor in the cavity, set up in air pump in the detector main part, set up in the gas outlet at detector main part top to and the gas circuit of connecting gradually each cavity, air pump and gas outlet, the air pump is provided with air pump entry and air pump export, the air pump entry passes through the gas circuit and is connected with the cavity, the air pump export passes through the gas circuit and is connected with the gas outlet, filter equipment includes: the air inlet is arranged on the air inlet, the screen is arranged on the air plug, the absorbent cotton is arranged on the screen, and the air inlet nozzle is locked on the air inlet.

2. The multi-parameter gas detector according to claim 1, wherein the chamber is provided with a chamber gas inlet and a chamber gas outlet, and the chamber gas inlet has a larger diameter than the chamber gas outlet.

3. The multi-parameter gas detector according to claim 1, wherein a sensor port is arranged on a gas path between the gas pump and the chamber, and the sensor port is connected with a pressure sensor.

4. The multi-parameter gas detector according to claim 1, wherein the detector body is provided with a gas path back plate, and the position of the gas path back plate corresponds to the detection gas path.

5. The multi-parameter gas detector according to claim 4, wherein the gas path back plate is thermally fused to the detection gas path by ultrasonic welding.

6. The multi-parameter gas detector of claim 1, wherein the sampling gas circuit comprises: with the handle that the trachea is connected, with the intake pipe that the handle is connected and with intake-tube connection's the cap of admitting air, the intake pipe both ends all are provided with the external screw thread, handle and the cap of admitting air all are provided with the internal thread with intake-tube connection department, the external screw thread matches with the internal thread, handle and trachea connection department are provided with pagoda type and connect, the trachea cover is located on the pagoda type connects.