CN110987739B - Particulate matter analyzer for engine - Google Patents
Particulate matter analyzer for engine Download PDFInfo
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- CN110987739B CN110987739B CN201911373755.5A CN201911373755A CN110987739B CN 110987739 B CN110987739 B CN 110987739B CN 201911373755 A CN201911373755 A CN 201911373755A CN 110987739 B CN110987739 B CN 110987739B
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- air inlet
- smoke
- compressed air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
Abstract
The invention relates to an engine particulate matter analyzer, comprising: a control system; the particle analysis sensor comprises a particle sensor, the particle analysis sensor is sequentially provided with a compressed air inlet, a smoke sampling port and a smoke backflow port from left to right, the smoke sampling port is communicated to a gas pipeline to be detected through a sampling probe, the smoke sampling port is communicated and connected with a back-blowing air inlet, and the smoke backflow port is communicated to the gas pipeline to be detected; the air compressor is communicated and connected to the compressed air inlet and used for providing compressed air; the air pump is communicated and connected to the back flushing air inlet, a filter is arranged between the back flushing air inlet and the air pump, and the air pump is communicated and connected to the control system; and the pressure reducing valve is in communication connection with the control system and is used for controlling the air pressure of the compressed air output by the air pump. The particle analysis sensor can be led to work in different states through reasonable arrangement.
Description
Technical Field
The invention relates to the field of particle analyzers, in particular to an engine particle analyzer.
Background
Particle analyzers are used to detect the size and quantity of solid particles in a gas. Can be widely applied to the fields of aerospace, electric power, petroleum, chemical engineering, transportation, ports, metallurgy, machinery, automobile manufacturing and the like.
Traditional particulate matter analysis appearance through the injection flue gas of fume emission source, in the flue gas directly got into the sensor, thereby the size and the quantity that obtains the particulate matter are detected through detecting the contaminated degree of sensor to flue gas pollution analysis appearance's sensor. According to the method, the smoke can be actively pushed into the sensor only through the smoke emission source, particles in stable airflow cannot be detected, and the application range is small.
And, use particulate matter analysis appearance at every turn after, all need carry out sensor washing and zero setting calibration to particulate matter analysis appearance, traditional particulate matter analysis appearance can't wash by oneself and zero setting, uses inconveniently.
The invention aims to design an engine particulate matter analyzer aiming at the problems in the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an engine particulate matter analyzer which can effectively solve the problems in the prior art.
The technical scheme of the invention is as follows:
engine particulate matter analysis appearance, its characterized in that: comprises the following steps:
a control system;
the particle analysis sensor comprises a particle sensor, the particle analysis sensor is sequentially provided with a compressed air inlet, a smoke sampling port and a smoke backflow port from left to right, the smoke sampling port is communicated to a gas pipeline to be detected through a sampling probe, the smoke sampling port is communicated and connected with a back-blowing air inlet, and the smoke backflow port is communicated to the gas pipeline to be detected;
the air compressor is communicated and connected to the compressed air inlet and used for providing compressed air;
the air pump is communicated and connected to the back flushing air inlet, a filter is arranged between the back flushing air inlet and the air pump, and the air pump is communicated and connected to the control system;
and the pressure reducing valve is in communication connection with the control system and is used for controlling the air pressure of the compressed air output by the air pump.
The compressed air inlet, the flue gas sampling opening, flue gas backward flow mouth, blowback air inlet all are provided with electronic valve, electronic valve communication connection to control system.
Further, the particle analysis sensor includes a heater.
Further, the air pressure of the compressed air provided by the air compressor is more than 3 bar.
The working state of the particle analyzer comprises zero adjustment of a particle sensor, electronic valves of the compressed air inlet, the smoke sampling port, the smoke backflow port and the back-blowing air inlet are opened, a control system starts an air pump, and the pressure value of the air pump is 1.1-1.3 bar.
The working state of the particle analyzer comprises a cleaning sampling probe, an electronic valve of a compressed air inlet is closed, electronic valves of a flue gas sampling port, a flue gas reflux port and a back-blowing air inlet are opened, a control system starts an air pump, and the pressure value of the air pump is 1.1-1.3 bar.
The working state of the particle analyzer comprises testing granularity, the electronic valves of the compressed air inlet, the smoke sampling port and the smoke return port are opened, the electronic valve of the back flushing air inlet is closed, and the pressure value of the pressure reducing valve is 1.4-1.6 bar.
Accordingly, the present invention provides the following effects and/or advantages:
according to the invention, the particle analysis sensor is controlled to be in the following 3 working modes through the opening and closing action of each electronic valve:
1. and (3) zeroing the particle sensor, opening electronic valves of the compressed air inlet, the smoke sampling port, the smoke backflow port and the back-blowing air inlet, and starting the air pump by the control system, wherein the pressure value of the air pump is 1.1-1.3 bar. All electronic valves are opened, the air compressor and the air pump push air simultaneously, and the air is from the compressed air inlet, the flue gas sampling port, the flue gas backward flow mouth, the blowback air inlet get into to all passageways in the particle analysis sensor all erode gas, and at this moment, the particle sensor's pollution degree is unanimous with the granularity of outside air, and the particle sensor uses the reading at this moment as zero.
2. Cleaning a sampling probe, closing an electronic valve of a compressed air inlet, opening electronic valves of a smoke sampling port, a smoke backflow port and a back-blowing air inlet, and starting an air pump by a control system, wherein the pressure value of the air pump is 1.1-1.3 bar. The air pump and the filter are matched to obtain clean air, and the clean air enters the particle analysis sensor through the back-blowing air inlet and is discharged through the smoke converging port, so that the sampling probe and the particle analysis sensor are cleaned.
3. And testing the granularity, wherein electronic valves of the compressed air inlet, the smoke sampling port and the smoke return port are opened, the electronic valve of the back-blowing air inlet is closed, and the pressure value of the pressure reducing valve is 1.4-1.6 bar. The air pump and the electric valve on the related passage are closed, the air compressor drives the compressed air to enter the particle analysis sensor from the compressed air inlet, in the flowing process of the compressed air, the gas to be detected is sucked by the flowing action of the compressed air and enters from the smoke sampling port, and the compressed air and the smoke synchronously return to the gas pipeline to be detected from the smoke backflow port. This process, gas is inhaled from the flue gas sample connection passively, has changed the tradition because the flue gas can only pass through in the flue gas emission source initiative with flue gas propelling movement to the sensor, can't detect the particulate matter in the steady air current, problem that application scope is little.
Meanwhile, the air pump and the air compressor are used for providing air flow power, the pressure of the air compressor is high, and the air compressor is continuously kept in a ventilation state in the measuring process. The air pump need only be activated when cleaning or zeroing is required. And reasonably distributing internal resources.
The invention is provided with the pressure reducing valve, the air pressure is reasonably set, the air flow is proper, and the air flow can be efficiently brought into the external smoke.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a simplified schematic diagram of the present invention.
Fig. 3 is a schematic view of the zero setting operation of the particle sensor of the present invention.
FIG. 4 is a schematic view of the operation state of the cleaning sampling probe of the present invention.
FIG. 5 is a schematic view of the operation state of the present invention for measuring granularity.
Detailed Description
To facilitate understanding of those skilled in the art, the structure of the present invention will now be described in further detail by way of examples in conjunction with the accompanying drawings:
referring to fig. 1-2 (for convenience of illustration, the communication pipes between the air compressor 10 and the air pump 9 and the various components are not shown in fig. 1),
an engine particulate matter analyzer, comprising:
a control system 4;
the particle analysis sensor 1 comprises a particle sensor, the particle analysis sensor is sequentially provided with a compressed air inlet 6, a smoke sampling port 2 and a smoke backflow port 3 from left to right, the smoke sampling port 2 is communicated with a gas pipeline to be detected through a sampling probe, the smoke sampling port 2 is communicated with a back-blowing air inlet 5, and the smoke backflow port 3 is communicated with the gas pipeline to be detected;
and the air compressor 10 is communicated and connected to the compressed air inlet 6 and used for providing compressed air, and the air pressure of the compressed air provided by the air compressor 10 is more than 3 bar. (ii) a
The air pump 9 is communicated and connected to the back-blowing air inlet 5, a filter 7 is arranged between the back-blowing air inlet 5 and the air pump 9, and the air pump 9 is communicated and connected to the control system 4;
and the pressure reducing valve 11 is connected to the control system 4 in a communication mode and used for controlling the air pressure of the compressed air output by the air compressor.
The compressed air inlet 6 the flue gas sampling port 2 the flue gas backward flow mouth 3, blowback air inlet 5 all are provided with electronic valve 8, electronic valve 8 communication connection is to control system 4.
Further, the particle analysis sensor 1 includes a heater.
The particle analyzer has three working states:
1. and (3) zero setting of the particle sensor, referring to fig. 3, opening electronic valves of the compressed air inlet 6, the smoke sampling port 2, the smoke backflow port 3 and the back-blowing air inlet 5, starting the air pump 9 by the control system 4, and setting the pressure value of the air pump 9 to be 1.1-1.3 bar. All electronic valves are opened, the air compressor 10 and the air pump 9 push air simultaneously, the air flows from the compressed air inlet 6, the flue gas sampling port 2, the flue gas backflow port 3 and the back flushing air inlet 5, so that all channels in the particle analysis sensor 1 are flushed with the air, at the moment, the pollution degree of the particle sensor is consistent with the granularity of the outside air, and the particle sensor takes the reading at the moment as zero point.
2. Cleaning the sampling probe, referring to fig. 4, the electronic valve of the compressed air inlet 6 is closed, the electronic valve of the flue gas sampling port 2, the flue gas reflux port 3 and the back-blowing air inlet 5 is opened, the control system 4 starts the air pump 9, and the pressure value of the air pump 9 is 1.1-1.3 bar. The air pump 9 and the filter 7 are matched to obtain clean air, and the clean air enters the particle analysis sensor 1 through the back-blowing air inlet 5 and is discharged through the flue gas converging port 3, so that the sampling probe and the particle analysis sensor 1 are cleaned.
3. And testing the granularity, referring to fig. 5, opening electronic valves of the compressed air inlet 6, the flue gas sampling port 2 and the flue gas return port 3, closing the electronic valve of the back-blowing air inlet 5, and setting the pressure value of the pressure reducing valve 11 to be 1.4-1.6 bar. The air pump 9 and the electric valve on the relevant passage are closed, the air compressor 10 drives the compressed air to enter the particle analysis sensor 1 from the compressed air inlet 6, in the flowing process of the compressed air, the gas to be detected is sucked by the flowing action of the compressed air and enters from the smoke sampling port 2, and the compressed air and the smoke synchronously return to the gas pipeline to be detected from the smoke return port 3. This process, gas is inhaled from flue gas sampling port 2 passively, has changed the tradition because the flue gas can only pass through in the flue gas emission source initiative with flue gas propelling movement to the sensor, can't detect the particulate matter in the steady air current, problem that application scope is little.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (6)
1. Engine particulate matter analysis appearance, its characterized in that: comprises the following steps:
a control system;
the particle analysis sensor comprises a particle sensor, the particle analysis sensor is sequentially provided with a compressed air inlet, a smoke sampling port and a smoke backflow port from left to right, the smoke sampling port is communicated with a gas pipeline to be detected through a sampling probe, the smoke sampling port is communicated and connected with a back-blowing air inlet, the smoke backflow port is communicated with the gas pipeline to be detected, the particle sensor is respectively communicated with the compressed air inlet, the smoke sampling port, the smoke backflow port and the back-blowing air inlet, and the back-blowing air inlet is communicated with the smoke backflow port;
the air compressor is communicated and connected to the compressed air inlet and used for providing compressed air;
the air pump is communicated and connected to the back flushing air inlet, a filter is arranged between the back flushing air inlet and the air pump, and the air pump is communicated and connected to the control system;
the pressure reducing valve is in communication connection with the control system and is used for controlling the air pressure of the compressed air output by the air pump;
the compressed air inlet, the smoke sampling port, the smoke return port and the back-blowing air inlet are all provided with electronic valves, and the electronic valves are in communication connection with the control system;
the working state of the particle analyzer comprises testing granularity, the electronic valves of the compressed air inlet, the smoke sampling port and the smoke backflow port are opened, the electronic valve of the back flushing air inlet is closed, the air compressor drives compressed air to enter the particle analysis sensor from the compressed air inlet, in the flowing process of the compressed air, gas to be tested is sucked by the flowing action of the compressed air and enters from the smoke sampling port, and the compressed air and the smoke synchronously return to a gas pipeline to be tested from the smoke backflow port.
2. The engine particulate matter analyzer of claim 1, wherein: the particle analysis sensor includes a heater.
3. The engine particulate matter analyzer of claim 1, wherein: the air pressure of the compressed air provided by the air compressor is more than 3 bar.
4. The engine particulate matter analyzer of claim 1, wherein: the working state of the particle analyzer comprises zero adjustment of a particle sensor, electronic valves of the compressed air inlet, the smoke sampling port, the smoke backflow port and the back-blowing air inlet are opened, a control system starts an air pump, and the pressure value of the air pump is 1.1-1.3 bar.
5. The engine particulate matter analyzer of claim 1, wherein: the working state of the particle analyzer comprises a cleaning sampling probe, an electronic valve of a compressed air inlet is closed, electronic valves of a flue gas sampling port, a flue gas reflux port and a back-blowing air inlet are opened, a control system starts an air pump, and the pressure value of the air pump is 1.1-1.3 bar.
6. The engine particulate matter analyzer of claim 1, wherein: the pressure value of the pressure reducing valve is 1.4-1.6 bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911373755.5A CN110987739B (en) | 2019-12-27 | 2019-12-27 | Particulate matter analyzer for engine |
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| CN201911373755.5A CN110987739B (en) | 2019-12-27 | 2019-12-27 | Particulate matter analyzer for engine |
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| CN110987739A CN110987739A (en) | 2020-04-10 |
| CN110987739B true CN110987739B (en) | 2022-08-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112370853B (en) * | 2020-10-29 | 2022-04-19 | 中国航发南方工业有限公司 | Oil cleanliness improving system and control method thereof |
| CN113607615A (en) * | 2021-08-04 | 2021-11-05 | 天津智易时代科技发展有限公司 | Automatic back-blowing system and back-blowing method for particulate matter detection dust instrument and particulate matter detection dust instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067493A (en) * | 2015-09-07 | 2015-11-18 | 常熟市矿山机电器材有限公司 | Online measurement system, online measurement equipment and online measurement method for concentration of flue dust |
| CN205538547U (en) * | 2016-01-27 | 2016-08-31 | 天津世纪动力科技发展有限公司 | Engine exhaust part flows particulate matter measuring device |
| CN106872326A (en) * | 2017-04-12 | 2017-06-20 | 广东美的制冷设备有限公司 | The automatic zero-setting method of dust sensor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198346B (en) * | 2014-08-26 | 2016-04-20 | 北京绿林创新数码科技有限公司 | A kind of mobile phone control type dust sensor monitoring system and using method thereof |
| CN105806755B (en) * | 2014-12-31 | 2019-11-12 | 上海北分科技股份有限公司 | A kind of flue gas inspection equipment |
| CN105987868B (en) * | 2015-02-09 | 2019-11-12 | 上海北分科技股份有限公司 | A kind of low-concentration flue gas detection system of particles |
| CN206002417U (en) * | 2016-08-11 | 2017-03-08 | 宋庆国 | Particulate matter detector with automatic heating and dehumidification function |
| CN109557009B (en) * | 2019-01-22 | 2024-03-29 | 深圳市无眼界科技有限公司 | Wide-range particulate matter detection device |
-
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- 2019-12-27 CN CN201911373755.5A patent/CN110987739B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067493A (en) * | 2015-09-07 | 2015-11-18 | 常熟市矿山机电器材有限公司 | Online measurement system, online measurement equipment and online measurement method for concentration of flue dust |
| CN205538547U (en) * | 2016-01-27 | 2016-08-31 | 天津世纪动力科技发展有限公司 | Engine exhaust part flows particulate matter measuring device |
| CN106872326A (en) * | 2017-04-12 | 2017-06-20 | 广东美的制冷设备有限公司 | The automatic zero-setting method of dust sensor |
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