CN213181242U

CN213181242U - High-precision infrared spectroscopic analysis gas sensor

Info

Publication number: CN213181242U
Application number: CN202021541324.3U
Authority: CN
Inventors: 吴佩霞; 李晓干
Original assignee: Jiangsu Ruikexin Technology Co ltd
Current assignee: Jiangsu Ruikexin Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-05-11
Anticipated expiration: 2030-07-29

Abstract

The utility model belongs to the technical field of gas sensor, especially, be a high accuracy infrared spectroscopy gas sensor, including the gas sensor body, be equipped with air inlet and gas outlet on the gas sensor body, the inside infrared spectroscopy chamber intercommunication setting of air inlet and gas outlet and gas sensor body, be equipped with dampproofing dehumidification subassembly on the air inlet, dampproofing dehumidification subassembly includes the connecting cylinder, the bottom of connecting cylinder is equipped with the sensor link of being connected with the air inlet. The utility model discloses an add dampproofing dehumidification subassembly and the dustproof subassembly that admits air on the air inlet of gas sensor body, make infrared gas sensor have good dust removal, dehumidification function concurrently, effectively avoid having dust or moist gas in the use and get into inside the sensor, greatly reduced infrared gas sensor to the operation requirement of environment, guaranteed gaseous measurement accuracy, have long service life's advantage.

Description

High-precision infrared spectroscopic analysis gas sensor

Technical Field

The utility model relates to a gas sensor technical field specifically is a high accuracy infrared spectroscopy gas sensor.

Background

Gas sensors are primarily used to detect a particular gas, measure the presence or absence of that gas in the vicinity of the sensor, or the level of that gas in the air in the vicinity of the sensor. Therefore, gas sensors are generally indispensable in safety systems. These sensors can provide information to the safety system of combustible, combustible and toxic gases, as well as the consumption of oxygen and the proportion of carbon dioxide in the area. A high-precision infrared spectroscopic gas sensor is one of the gas sensors that is made using the absorption of infrared spectra of specific frequencies by gases. The infrared light is emitted from the emitting end to the receiving end, and when gas exists, the infrared light is absorbed, so that the received infrared light is reduced, and the gas content is detected.

High accuracy infrared spectroscopy gas sensor adopts the optical detection mode, be difficult for receiving harmful gas's influence and poisoning, ageing, it is fast to have a response speed, stability is good, explosion-proof nature is good, the signal to noise ratio is high, the interference killing feature is strong, measurement accuracy height etc. advantage, but present high accuracy infrared spectroscopy gas sensor's dustproof, dampproofing effect is relatively poor, operation requirement to the environment is high, it is inside that the gas that has dust or humidity in the use gets into infrared gas sensor, gas detection precision and sensor life have been influenced greatly.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a high accuracy infrared spectroscopic analysis gas sensor has solved dustproof, the dampproofing effect of current high accuracy infrared spectroscopic analysis gas sensor relatively poor, and is high to the operation requirement of environment, and inside having dust or moist gas entering infrared gas sensor in the use, influenced gaseous detection precision and sensor life's problem greatly.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a high-precision infrared spectroscopic analysis gas sensor comprises a gas sensor body, wherein the gas sensor body is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with an internal infrared spectroscopic measurement cavity of the gas sensor body, the air inlet is provided with a moisture-proof dehumidification component, the moisture-proof dehumidification component comprises a connecting cylinder, the bottom end of the connecting cylinder is provided with a sensor connecting end connected with the air inlet, the top end of the connecting cylinder is provided with a cylinder cover, the bottom of the inner cavity of the connecting cylinder is provided with a positioning disc, the middle part of the positioning disc is provided with an air hole, an embedded cylinder seat is uniformly distributed on the positioning disc corresponding to the periphery of the air hole, a columnar drying package member for gas drying and dehumidification is embedded on the embedded cylinder seat, the bottom of the cylinder cover is fixedly connected with a porous cover plate through a connecting rod, and the cylinder cover tightly presses and fixes the columnar drying package member, the connecting cylinder is provided with an air inlet connecting end on the side wall above the corresponding porous cover plate, the air inlet connecting end is connected with an air inlet dustproof assembly, the air inlet dustproof assembly comprises an air inlet cylinder, one end of the air inlet cylinder is provided with an air inlet end, the other end of the air inlet cylinder is provided with an exhaust connecting end connected with the air inlet connecting end, one side, close to the air inlet end, of the inside of the air inlet cylinder is provided with a first filter screen, and one side, far away from the air inlet end, of the first filter screen is provided with a second filter screen.

As a preferred technical scheme of the utility model, the connected mode between air inlet and the sensor link, between cover and the connecting cylinder top and between air inlet link and the exhaust link is threaded connection.

As an optimized technical scheme of the utility model, the dry package of columnar order is inlayed the dress frame by the stainless steel and is inlayed the drier package that is adorned in the stainless steel and constitute.

As an optimized technical scheme of the utility model, the equipartition has the through-hole on the porous apron, and the through-hole sets up with the dry package spare of columnar order mutually in a wrong way.

As an optimized technical scheme of the utility model, the filtration pore aperture of first filter screen is greater than the filtration pore aperture of second filter screen.

(III) advantageous effects

Compared with the prior art, the utility model provides a high accuracy infrared spectroscopic analysis gas sensor possesses following beneficial effect:

this high accuracy infrared spectroscopic analysis gas sensor through add dampproofing dehumidification subassembly and the dustproof subassembly that admits air on the air inlet of gas sensor body, makes infrared gas sensor have good dust removal, dehumidification function concurrently, effectively avoids having dust or moist gas in the use and gets into inside the sensor, has greatly reduced infrared gas sensor to the operation requirement of environment, has guaranteed gaseous measurement accuracy, has long service life's advantage.

Drawings

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

FIG. 2 is an exploded view of the moisture dehumidification module of the present invention;

fig. 3 is the structure diagram of the middle air intake dustproof assembly of the present invention.

In the figure: 100. a gas sensor body; 101. an air inlet; 102. an air outlet; 200. a moisture resistant dehumidification assembly; 201. a connecting cylinder; 2011. a sensor connection end; 2012. an air inlet connecting end; 202. a cylinder cover; 203. positioning a plate; 2031. a vent hole; 2032. embedding a cylinder seat; 204. a cylindrical drying package; 205. a connecting rod; 206. a porous cover plate; 300. an air intake dustproof assembly; 301. an air inlet cylinder; 3011. an air inlet end; 3012. an exhaust connection end; 302. a first filter screen; 303. a second filter.

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.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a high-precision infrared spectroscopic analysis gas sensor comprises a gas sensor body 100, wherein a gas inlet 101 and a gas outlet 102 are arranged on the gas sensor body 100, the gas inlet 101 and the gas outlet 102 are communicated with an internal infrared spectroscopic measurement cavity of the gas sensor body 100, a moisture-proof dehumidification assembly 200 is arranged on the gas inlet 101, the moisture-proof dehumidification assembly 200 comprises a connecting cylinder 201, a sensor connecting end 2011 connected with the gas inlet 101 is arranged at the bottom end of the connecting cylinder 201, a cylinder cover 202 is arranged at the top end of the connecting cylinder 201, a positioning disc 203 is arranged at the bottom of an inner cavity of the connecting cylinder 201, vent holes 2031 are arranged in the middle of the positioning disc 203, embedded cylinder seats 2 are uniformly distributed on the periphery of the positioning disc 203 corresponding to the vent holes 2031, a column-shaped drying package 204 for drying and dehumidifying gas is embedded on the embedded cylinder seats 2032, a porous cover plate 206 is fixedly connected to the bottom of the cylinder cover 202 through a connecting rod 205, the cylinder cover 202 fixes the column-, be equipped with the link 2012 that admits air on the lateral wall above the connecting cylinder 201 corresponds porous apron 206, be connected with the dustproof subassembly 300 that admits air on the link 2012 admits air, the dustproof subassembly 300 that admits air includes an air inlet cylinder 301, the one end of an air inlet cylinder 301 is equipped with inlet end 3011, the other end of an air inlet cylinder 301 is equipped with the exhaust link 3012 of being connected with inlet end 2012, one side that the inside of an air inlet cylinder 301 is close to inlet end 3011 is equipped with first filter screen 302, one side that inlet end 3011 was kept away from to first filter screen 302 is equipped with second filter screen 303.

Specifically, the connection modes between the air inlet 101 and the sensor connection end 2011, between the cylinder cover 202 and the top end of the connection cylinder 201, and between the air inlet connection end 2012 and the air exhaust connection end 3012 are all threaded connections.

In this embodiment, the mode that all adopts threaded connection between air inlet 101 and the sensor link 2011, between cover 202 and the connecting cylinder 201 top and between the link 2012 of admitting air and the exhaust link 3012 is connected, more does benefit to installing in dismantling between gas sensor body 100 and dampproofing dehumidification subassembly 200 and the dustproof subassembly 300 of admitting air, makes the assembly more convenient.

Specifically, the column-shaped desiccant packet 204 is composed of a stainless steel embedded frame and a desiccant packet embedded in the stainless steel embedded frame.

In this embodiment, the drying agent bag is fixed by the stainless steel embedding frame, and after gas enters the connecting cylinder 201, the drying agent bag in the stainless steel embedding frame is used to absorb moisture in the gas, so that the infrared photosensitive element in the gas sensor body 100 is prevented from being in a humid working environment, normal operation of the sensor is ensured, and the sensor is not affected by a humid environment.

Specifically, the porous cover plate 206 is uniformly provided with through holes, and the through holes are arranged in a staggered manner with the column-shaped drying package 204.

In this embodiment, the through-hole is arranged on the porous cover plate 206 so that the gas in the connecting cylinder 201 flows to the infrared spectrum measurement cavity in the gas sensor body 100 through the sensor connecting end 2011, the through-hole and the column-shaped dry package 204 are arranged in a staggered manner, and the situation that the column-shaped dry package 204 blocks the through-hole and gas circulation is blocked can be avoided.

Specifically, the pore diameter of the first filter 302 is larger than that of the second filter 303.

In this embodiment, the filter pore aperture of first filter screen 302 is greater than the filter pore aperture of second filter screen 303, first filter screen 302 is arranged in large granule dust and debris in the filtering gas, second filter screen 303 is arranged in the middle and small dust particle of filtering dust gas, can carry out the second grade to the gas that gets into in air inlet cylinder 301 and filter, make dust removal, dustproof effect is better, avoid inside the dust gets into gas sensor, the clean cycle of extension speculum face, need not frequently to clean speculum face, make measurement accuracy obtain the guarantee.

The utility model discloses a theory of operation and use flow: when assembling, firstly, the moisture-proof dehumidifying component 200 is assembled, the positioning disc 203 is embedded into the bottom of the inner cavity of the connecting cylinder 201, then, each column-shaped drying package 204 is respectively embedded into each embedded cylinder seat 2032, the cylinder cover 202 corresponds to the top end of the connecting cylinder 201, the cylinder cover 202 is rotated and screwed on the connecting cylinder 201, at the moment, the column-shaped drying package 204 is pressed inside the connecting cylinder 201 by the porous cover plate 206 connected to the bottom of the cylinder cover 202 through the connecting rod 205, namely, the assembly of the moisture proof and dehumidifying assembly 200 is completed, and then the sensor connecting end 2011 of the moisture proof and dehumidifying assembly 200 is connected with the air inlet 101 of the gas sensor body 100 by a threaded connection, the moisture-proof dehumidification component 200 is assembled on the gas sensor body 100, and finally, the exhaust connecting end 3012 and the air inlet connecting end 2012 of the air inlet dustproof component 300 are connected in a threaded connection mode, so that the seed assembly task is completed; during operation, the gas that awaits measuring gets into inside air inlet cylinder 301 through inlet end 3011, filter the dust in the dirt gas under first filter screen 302 and second filter screen 303 second grade cross filtration, gas after the dust removal gets into connecting cylinder 201 inside through exhaust link 3012, gas after the dust removal processing gets into during the dry packet 204 peripheral environment of cylindricality through porous apron 206, the moisture in the drier package through the dry packet 204 of cylindricality, reach the effect of dehumidification, avoid the infrared photosensitive element in the gas sensor body 100 to be in moist operational environment, gas after accomplishing the dehumidification is carried to the inside infrared spectrum measurement intracavity of gas sensor body 100 through sensor link 2011, accomplish the measurement to gas content by infrared photosensitive element.

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 may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high accuracy infrared spectroscopy gas sensor, includes gas sensor body (100), its characterized in that: be equipped with air inlet (101) and gas outlet (102) on gas sensor body (100), the inside infrared spectrum measurement chamber intercommunication setting of air inlet (101) and gas outlet (102) and gas sensor body (100), be equipped with dampproofing dehumidification subassembly (200) on air inlet (101), dampproofing dehumidification subassembly (200) is including connecting cylinder (201), the bottom of connecting cylinder (201) is equipped with sensor link (2011) of being connected with air inlet (101), the top of connecting cylinder (201) is equipped with cover (202), the inner chamber bottom of connecting cylinder (201) is equipped with positioning disk (203), the middle part of positioning disk (203) is equipped with air vent (2031), the peripheral equipartition that corresponds air vent (2031) on positioning disk (203) has inlays dress barrel head (2032), inlay and be equipped with the dry package of column type (204) that are used for gas drying dehumidification on dress barrel head (2032), the bottom of the cylinder cover (202) is fixedly connected with a porous cover plate (206) through a connecting rod (205), the cylinder cover (202) tightly presses and fixes the column-shaped drying package piece (204) in the connecting cylinder (201) through the porous cover plate (206), an air inlet connecting end (2012) is arranged on the upper side wall of the connecting cylinder (201) corresponding to the porous cover plate (206), the air inlet connecting end (2012) is connected with an air inlet dustproof assembly (300), the air inlet dustproof assembly (300) comprises an air inlet cylinder (301), one end of the air inlet cylinder (301) is provided with an air inlet end (3011), the other end of the air inlet cylinder (301) is provided with an air outlet connecting end (3012) connected with the air inlet connecting end (2012), a first filter screen (302) is arranged on one side of the inside of the air inlet cylinder (301) close to the air inlet end (3011), and a second filter screen (303) is arranged on one side, away from the air inlet end (3011), of the first filter screen (302).

2. A high accuracy infrared spectroscopic gas sensor in accordance with claim 1 wherein: the connection modes between the air inlet (101) and the sensor connecting end (2011), between the barrel cover (202) and the top end of the connecting barrel (201) and between the air inlet connecting end (2012) and the air exhaust connecting end (3012) are all threaded connections.

3. A high accuracy infrared spectroscopic gas sensor in accordance with claim 1 wherein: the column-shaped drying bag piece (204) consists of a stainless steel embedded frame and a drying agent bag embedded in the stainless steel embedded frame.

4. A high accuracy infrared spectroscopic gas sensor in accordance with claim 1 wherein: through holes are uniformly distributed on the porous cover plate (206), and the through holes and the column-shaped drying package piece (204) are arranged in a staggered mode.

5. A high accuracy infrared spectroscopic gas sensor in accordance with claim 1 wherein: the aperture of the filter holes of the first filter screen (302) is larger than that of the filter holes of the second filter screen (303).