CN114002115A

CN114002115A - Self-heating regeneration type laser scattering method particulate matter sensor

Info

Publication number: CN114002115A
Application number: CN202111219275.0A
Authority: CN
Inventors: 景象
Original assignee: Jiangsu Yuhou Environmental Protection Technology Co ltd
Current assignee: Nanjing Huicheng Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-02-01
Anticipated expiration: 2041-10-20
Also published as: CN114002115B

Abstract

The invention provides a self-heating regeneration type laser scattering method particle sensor. The self-heating regeneration type laser scattering particle sensor includes a sensing device, a laser transmitter and a laser receiver. A supercharger is provided inside the sensing device, and an air inlet is provided on the surface of the supercharger. The surface of the supercharger is provided with an outlet, and the inside of the sensing device is provided with a monitoring channel. The self-heating regeneration type laser scattering particle sensor is used in conjunction with the supercharger and the heat pipe. The heat generated by the supercharger can be used to automatically heat the ceramic layer. The design of the glass layer and the carbon layer can desorb the particles on the surface of the carbon layer, and at the same time realize the regeneration of the carbon layer, which can prevent the particles from inside the sensor device Adhesion and accumulation, realize automatic processing of particles inside the sensor device, and ensure the normal monitoring work of the sensor device.

Description

Self-heating regeneration type laser scattering method particulate matter sensor

Technical Field

The invention relates to the technical field of mobile machinery tail gas detection, in particular to a self-heating regeneration type particle sensor by a laser scattering method.

Background

When the mobile machinery is operated, chemical raw materials such as gasoline, diesel oil are mostly used as driving raw materials, the mobile machinery can produce a large amount of tail gas when operating, the tail gas contains harmful gas and solid particles, in order to monitor the particles in the tail gas, a particle sensor can be arranged in an exhaust channel of the tail gas, and the laser particle sensor monitors the particles in the tail gas by utilizing a laser light scattering principle.

When laser particulate matter sensor was monitoring the particulate matter in the mobile machinery tail gas, the particulate matter can constantly adhere in the sensor to constantly accumulation, in order to make laser particulate matter sensor can carry out normal monitoring work to the particulate matter in the tail gas, current laser particulate matter sensor need regularly handle its inside, and the sensor clearance is maintained the operation inconvenient, can influence the effect of tail gas supervision simultaneously.

Disclosure of Invention

In order to realize the purpose of the self-heating regeneration type laser scattering method particle sensor, the invention is realized by the following technical scheme: the utility model provides a self-heating regeneration type laser scattering method particulate matter sensor, includes sensing device, laser emitter and laser receiver, sensing device's inside is provided with the booster, the surface of booster is provided with the air inlet, the surface of booster is provided with the export, sensing device's inside is provided with the monitoring passageway, the inside of monitoring passageway is equipped with the granule adsorption layer subassembly, the granule adsorption layer subassembly includes glass layer and ceramic layer, the ceramic layer is located the surface that monitoring passageway one side was kept away from on the glass layer, be provided with the heat pipe between ceramic layer and the booster, the surface that the glass layer is close to monitoring passageway one side is provided with the carbon-layer.

Furthermore, the heat conduction pipe is internally designed by adopting a heat conduction material.

Furthermore, the surface of the monitoring channel is provided with an air outlet, and the air outlet is positioned on one side of the monitoring channel far away from the outlet.

Furthermore, the inside of laser emitter is equipped with laser device and lens, and the inside of laser receiver is provided with laser receiver and lens.

Furthermore, particle adsorption layer components are arranged inside the laser transmitter and the laser receiver.

Further, the glass layer is positioned on the inner surface of the monitoring channel and used for forming an airflow channel inside the monitoring channel.

Further, the part of the ceramic layer located inside the laser transmitter and the laser receiver adopts a transparent ceramic design, and the ceramic layer is matched with the outer surface of the glass layer and is provided with a heat conduction pipe between the ceramic layer and the supercharger.

Furthermore, the carbon layer is designed by adopting activated carbon and is deposited on the inner surface of the glass layer.

Compared with the prior art, the invention has the following beneficial effects:

this self-heating regeneration type laser scattering method particulate matter sensor uses through the cooperation of booster and heat pipe, the booster is when the operation, the heat that usable booster produced, carry out self-heating to the ceramic layer, the design of glass layer and carbon-layer can carry out the desorption to the particulate matter on carbon-layer surface and handle, realize the regeneration of carbon-layer simultaneously, can prevent that the particulate matter from piling up at the inside adhesion of sensing device, realize the automatic processing to the inside particulate matter of sensing device, guarantee sensing device's normal monitoring work.

Drawings

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

FIG. 2 is a schematic diagram of a laser transmitter according to the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 at A according to the present invention;

fig. 4 is a schematic perspective view of the present invention.

In the figure: 1. a sensing device; 2. a supercharger; 21. an air inlet; 22. a lead-out port; 23. a heat conducting pipe; 3. monitoring a channel; 4. a laser transmitter; 5. a laser device; 51. a lens; 6. a laser receiver; 7. a particulate adsorbent layer assembly; 71. a glass layer; 72. a ceramic layer; 8. a carbon layer; 9. and an air outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An example of the self-heating regenerative type laser scattering particle sensor is as follows:

referring to fig. 1-4, a self-heating regeneration type laser scattering method particulate matter sensor includes a sensing device 1, a laser emitter 4 and a laser receiver 6, a pressure booster 2 is disposed inside the sensing device 1 and used for conveying tail gas into the sensing device 1, an air inlet 21 is disposed on the surface of the pressure booster 2 and used for inputting the tail gas, a guide outlet 22 is disposed on the surface of the pressure booster 2 and used for guiding the tail gas into a monitoring channel 3, and the monitoring channel 3 is disposed inside the sensing device 1 and used for monitoring particulate matter in the tail gas.

The inside of monitoring passageway 3 is equipped with particle adsorption layer subassembly 7 for prevent that the adhesion of particulate matter in the tail gas from piling up in sensing device 1, particle adsorption layer subassembly 7 includes glass layer 71 and ceramic layer 72, ceramic layer 72 is located the surface of glass layer 71 one side far away from monitoring passageway 3, be used for heating glass layer 71, be provided with heat pipe 23 between ceramic layer 72 and the booster 2, be arranged in guiding the heat that booster 2 produced to ceramic layer 72, the surface that glass layer 71 is close to monitoring passageway 3 one side is provided with carbon-layer 8, under high temperature state, can make the automatic desorption of particulate matter on its surface, realize the automatic regeneration to the active carbon.

Use through the cooperation of booster 2 and heat pipe 23, booster 2 is when the operation, the heat that usable booster 2 produced carries out self-heating to ceramic layer 72, glass layer 71 and carbon layer 8's design can carry out the desorption to the particulate matter on carbon layer 8 surface and handle, realize the regeneration of the inside active carbon of carbon layer 8 simultaneously, can prevent that the particulate matter from piling up at the inside adhesion of sensing device 1, realize the automatic processing to the inside particulate matter of sensing device 1, ensure sensing device 1's normal monitoring work.

The heat pipes 23 are designed internally with a heat conductive material for conducting heat generated by the supercharger 2 to the ceramic layer 72.

The surface of the monitoring channel 3 is provided with an air outlet 9, and the air outlet 9 is located on one side of the monitoring channel 3 far away from the outlet 22 and is used for outputting tail gas inside the sensing device 1.

Laser emitter 4's inside is equipped with laser device 5 and lens 51, and laser receiver 6's inside is provided with laser receiver and lens 51, and laser emitter 4 cooperates with laser receiver 6, and usable laser light scattering is kept away from and is monitored the particulate matter in the tail gas.

The laser transmitter 4 and the laser receiver 6 are both provided with a particle adsorption layer component 7 inside for preventing the particles in the exhaust gas from adhering and accumulating in the sensor device 1.

The glass layer 71 is located on the inner surface of the monitoring channel 3, and is used for forming a gas flow channel inside the monitoring channel 3 and heating the carbon layer 8 on the surface thereof.

The ceramic layer 72 is made of transparent ceramics at the inner part of the laser transmitter 4 and the laser receiver 6, the ceramic layer 72 is matched with the outer surface of the glass layer 71, and heat conduction pipes 23 are arranged between the ceramic layer 72 and the supercharger 2, and the heat generated by the supercharger 2 is transferred into the ceramic layer 72 by utilizing the heat conduction pipes 23.

Carbon layer 8 adopts the activated carbon design, deposits at the internal surface of glass layer 71 for realize the automatic desorption of the inside adhered particulate matter of sensing device 1, prevent that particulate matter from piling up in sensing device 1's inside.

When using, utilize this sensing device 1 to monitor the particulate matter in the removal machinery tail gas, through starting booster 2, carry the tail gas that the removal machinery produced, and enter into booster 2 with tail gas from the position of air inlet 21, and from the position of export 22, carry tail gas in monitoring passageway 3, start laser emitter 4 and laser receiver 6, laser device 5 inside laser emitter 4 can send light, utilize the laser light scattering to keep away from simultaneously, monitor the particulate matter in the inside tail gas of monitoring passageway 3.

When monitoring tail gas, the surface adsorption of carbon-layer 8 has the solid particle thing in the tail gas, after supercharger 2 is after the operation is stable, it can produce high temperature, the surface of ceramic layer 72 is carried to the high temperature that supercharger 2 produced through heat pipe 23, utilize the heat conductivility of ceramic layer 72, heat glass layer 71, glass layer 71 can carry out high temperature heating to carbon-layer 8 in step, the active carbon on carbon-layer 8 surface is under high temperature state, desorption phenomenon can appear in its surperficial solid particle, solid particle thing can break away from the surface of carbon-layer 8, the active carbon on carbon-layer 8 surface can resume original activity, thereby make the active carbon obtain regeneration.

When the supercharger 2 operates, the surface of the ceramic layer 72 is automatically heated, so that solid particles on the surface of the carbon layer 8 are separated, the solid particles in tail gas are prevented from being accumulated inside the sensor 1 continuously, the sensor 1 is prevented from being blocked, and the normal monitoring of the sensor 1 on the tail gas is ensured.

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 utility model provides a self-heating regeneration type laser scattering method particulate matter sensor, includes sensing device (1), laser emitter (4) and laser receiver (6), its characterized in that: the inside of sensing device (1) is provided with booster (2), the surface of booster (2) is provided with air inlet (21), the surface of booster (2) is provided with export (22), the inside of sensing device (1) is provided with monitoring passageway (3), the inside of monitoring passageway (3) is equipped with particle adsorption layer subassembly (7), particle adsorption layer subassembly (7) are including glass layer (71) and ceramic layer (72), ceramic layer (72) are located glass layer (71) and keep away from the surface of monitoring passageway (3) one side, be provided with heat pipe (23) between ceramic layer (72) and booster (2), the surface that glass layer (71) are close to monitoring passageway (3) one side is provided with carbon-layer (8).

2. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: the heat conduction pipe (23) is internally designed by adopting a heat conduction material.

3. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: the surface of the monitoring channel (3) is provided with an air outlet (9), and the air outlet (9) is positioned on one side of the monitoring channel (3) far away from the outlet (22).

4. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: the laser receiver is characterized in that a laser device (5) and a lens (51) are arranged inside the laser transmitter (4), and a laser receiver and the lens (51) are arranged inside the laser receiver (6).

5. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: and particle adsorption layer components (7) are arranged in the laser transmitter (4) and the laser receiver (6).

6. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: the glass layer (71) is positioned on the inner surface of the monitoring channel (3) and is used for forming an airflow channel inside the monitoring channel (3).

7. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: the ceramic layer (72) is located the inside part of laser emitter (4) and laser receiver (6) and adopts transparent ceramic design, and ceramic layer (72) all are equipped with heat pipe (23) with booster (2) with the surface looks adaptation of glass layer (71).

8. The self-heating regenerative laser scattering particle sensor as claimed in claim 1, wherein: the carbon layer (8) is designed by adopting activated carbon and is deposited on the inner surface of the glass layer (71).