CN217332160U - Marine engine tail gas detection device - Google Patents
Marine engine tail gas detection device Download PDFInfo
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- CN217332160U CN217332160U CN202221013938.3U CN202221013938U CN217332160U CN 217332160 U CN217332160 U CN 217332160U CN 202221013938 U CN202221013938 U CN 202221013938U CN 217332160 U CN217332160 U CN 217332160U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model provides a marine engine tail gas detection device, a serial communication port, include: a gas chamber including four gas channels for the gas to be measured to flow through, and SO respectively arranged at the gas inlet ends of the four gas channels 2 、CO 2 CO and HC optical filters; an infrared light emitter disposed at one side of the gas chamber to emit light toward the SO 2 、CO 2 The CO and HC optical filters emit infrared light and enable the infrared light to enter each gas flow channel respectively; an infrared light detector is provided, which is provided with a light source,the infrared light receiving device is arranged on the other side of the gas chamber and used for receiving the infrared light output by each gas flow channel; and the signal processor is connected with the infrared light detector to acquire the intensity of the infrared light output by each gas flow passage SO as to calculate the SO 2 、CO 2 CO, HC concentrations. The utility model has the advantages that: can simultaneously detect SO generated by exhaust emission of ship engine 2 、CO 2 The concentrations of CO and HC provide an effective monitoring means for managing SO2 of the tail gas emission of the ship engine, and further the aim of controlling the emission of the ship tail gas SO2 is achieved.
Description
Technical Field
The utility model relates to a tail gas pollution thing equipment technical field especially relates to a marine engine tail gas detection device.
Background
With the rapid development of various industrial technologies, great convenience is brought to the life of people, and various vehicles gradually change the life habits of people. Ships are one of the important vehicles for human beings, and can discharge a large amount of exhaust gas into the atmosphere during driving, and the exhaust gas contains a large amount of toxic and harmful gases, which can cause environmental pollution, and the exhaust gas mainly comprises: carbon monoxide (CO), Hydrocarbons (HC), Nitrogen Oxides (NO) x ) PM2.5 particulate matter, sulfur oxides, and the like. Among the most harmful of these is sulfur dioxide (SO) 2 ) It is a main substance of environmental pollution, causes serious air quality reduction and causes great harm to human bodies.
At present, according to international regulations, no ship sulfur dioxide emission limit value is regulated in an emission standard, and the purpose of simultaneously controlling the emission of sulfur dioxide and PM particles of a ship is achieved by limiting the type and quality of fuel used by the ship. The defects of the mode are that the sulfur emission is reduced through the sulfur content of the fuel oil quality, the fuel oil quality in the market is uneven, and if the fuel oil which does not reach the standard (the sulfur content is more than 1000 ppm) is used, a large amount of sulfur dioxide is generated due to no data monitoring and control, so that the environmental pollution is caused.
Aiming at the strong harmfulness of sulfur dioxide, China has already treated the pollution of sulfur dioxide and reduced the discharge amount of sulfur dioxide as an important task of environmental treatment and has strictly executed the treatment in a quite long time. Therefore, in order to manage the emission of sulfur dioxide in marine exhaust gas, it is necessary to develop a marine engine exhaust emission detection device having a sulfur dioxide concentration detection function.
SUMMERY OF THE UTILITY MODEL
In view of this, for the detection of solving marine engine tail gas emission pollutant, especially the detection of sulfur dioxide concentration, the embodiment of the utility model provides a marine engine tail gas detection device.
An embodiment of the utility model provides a marine engine tail gas detection device, include:
a gas chamber including four gas channels for the gas to be measured to flow through, and the gas inlet ends of the gas channels are respectively provided with SO 2 Optical filter, CO 2 An optical filter, a CO optical filter, and an HC optical filter;
an infrared light emitter disposed at one side of the gas chamber to face the SO 2 Optical filter, the CO 2 The optical filter, the CO optical filter and the HC optical filter emit infrared light and enable the infrared light to enter each gas flow channel respectively;
the infrared light detector is arranged on the other side of the gas chamber and used for receiving the infrared light output by each gas flow passage;
and the signal processor is connected with the infrared light detector to acquire the intensity of the infrared light output by each gas flow passage SO as to calculate the SO 2 Concentration, CO 2 Concentration, CO concentration, and HC concentration.
The gas inlet pipe is respectively connected with the gas inlet ends of the gas flow channels, and the gas outlet pipe is respectively connected with the gas outlet ends of the gas flow channels.
Furthermore, a temperature sensor and a pressure sensor are arranged on the air inlet pipe.
Further, an air pump is arranged on the air inlet pipe.
Further, still include the membrane dryer, the membrane dryer sets up on the intake pipe.
Further, the gas heating device also comprises a heater, wherein the heater is arranged in the gas chamber to heat each gas flow passage.
Further, the signal processor is also connected with the infrared light emitter to control the frequency and wavelength of the infrared light emitted by the infrared light emitter.
Further, each of the gas flow passages is arranged in parallel.
Further, the gas flow passage is cylindrical.
The embodiment of the utility model provides a technical scheme brings the beneficial effect be: the utility model discloses a marine engine tail gas detection device, based on non-dispersive infrared technology, adopt the multichannel mode of different light filters, can detect the SO that marine engine exhaust emission produced simultaneously 2 Concentration, CO 2 The concentration, the CO concentration and the HC concentration provide an effective monitoring means for managing SO2 of the tail gas emission of the ship engine, SO that the aim of controlling the emission of the ship tail gas SO2 is fulfilled.
Drawings
Fig. 1 is a schematic diagram of the ship engine tail gas detection device of the present invention.
In the figure: 1-gas chamber, 2-gas flow channel, 3-SO 2 Optical filter, 4-CO 2 The device comprises an optical filter, a 5-CO optical filter, a 6-HC optical filter, a 7-infrared light emitter, an 8-infrared light detector, a 9-signal processor, a 10-air inlet pipe, a 11-air outlet pipe, a 11-temperature sensor and a 12-pressure sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings. The following description is of the preferred embodiment of the invention in its various possible embodiments and is intended to provide a basic understanding of the invention and not to identify key or critical elements of the invention or to delineate the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a ship engine tail gas detection device, which is mainly applied to detecting the concentration of each component of ship tail gas, and it can be understood that the detection device can also be applied to detecting polluted gases in other various scenes. The detection device mainly comprises an air chamber 1, an air inlet pipe 10, an air outlet pipe 11, an infrared light emitter 7, an infrared light detector 8 and a signal processor 9.
As shown in fig. 1, the gas chamber 1 includes four gas flow channels 2 through which the gas to be measured flows, respectively. Specifically, each of the gas flow channels 2 is arranged in parallel, and the gas flow to be measured can flow through four of the gas flow channels 2 at the same time. Preferably, the gas flow channel 2 is cylindrical.
The intake pipe 10 is connected with the inlet end of each gas flow channel 2 respectively, the intake pipe 10 is provided with an air pump, and the exhaust gas of the ship engine can be continuously input into the intake pipe 10 through the air pump and then flows to each gas flow channel 2. The air inlet pipe 10 is further provided with a membrane dryer, and the membrane dryer is used for drying and dehumidifying the gas to be detected before being input into each gas flow passage 2. The gas outlet pipe 11 is respectively connected with the gas outlet end of each gas flow passage 2, and the gas detected in each gas flow passage 2 is discharged through the gas outlet pipe 11.
Continuing to show in fig. 1, the gas inlet ends of the four gas flow channels 2 are respectively provided with SO 2 Optical filter 3, CO 2 A filter 4, a CO filter 5, and an HC filter 6. Each filter can filter infrared light with different specific wavelengths. SO as described in this example 2 The optical filter 3 is an optical filter capable of filtering infrared light with a wavelength of 7.4 μm, and the CO is 2 The filter 4 is a filter capable of filtering infrared light with a wavelength of 4.26 μm, the CO filter 5 is a filter capable of filtering infrared light with a wavelength of 4.65 μm, and the HC filter 6 is a filter capable of filtering infrared light with a wavelength of 1.68 μmA filter for long infrared light.
The infrared light emitter 7 is arranged on one side of the air chamber 1. The infrared light emitter 7 may emit light towards the SO 2 Optical filter 3, the CO 2 The optical filter 4, the CO optical filter 5, and the HC optical filter 6 emit infrared light and make the infrared light enter each of the gas flow passages 2, respectively. Infrared light passes through the SO 2 Optical filter 3, the CO 2 The filter 4, the CO filter 5 and the HC filter 6 are filtered to generate infrared light with four specific wavelengths, such as 7.4 μm, 4.26 μm, 4.65 μm and 1.68 μm in this embodiment.
The infrared light detector 8 is disposed on the other side of the gas chamber 1, and can receive the infrared light output by each gas flow channel 2. Infrared light with specific wavelength is emitted from the gas outlet end of the gas flow passage 2 after being reflected for multiple times in the gas flow passage 2, and is received by the infrared light detector 8.
The signal processor 9 is connected to the infrared light detector 8 to obtain the intensity of the infrared light output by each gas flow passage 2 to calculate the SO 2 Concentration, CO 2 Concentration, CO concentration, and HC concentration. The signal processor 9 is also connected to the infrared light emitter 7, and can control the frequency and wavelength of the infrared light emitted by the infrared light emitter 7. The signal processor 9 is an NDIR signal processor, and based on the non-dispersive infrared technology, the signal processor 9 calculates SO by a spectrum gas detection method based on a gas absorption theory 2 Concentration, CO 2 Concentration, CO concentration, and HC concentration.
In this example, SO is used 2 The detection principle is explained by taking concentration detection as an example. Specifically, the infrared light emitter 7 emits infrared light which passes through the SO 2 The infrared light with a specific wavelength (7.4 mu m) is formed after being filtered by the optical filter 3 and enters the corresponding gas channel 2, the gas to be detected is input into the gas channel 2 through the gas inlet pipe 10, the infrared light is absorbed by the gas to be detected in the gas channel 2, and due to the Lambert-Beer (Lambert-Beer) absorption law, the intensity of the infrared light with the specific wavelength can be changed corresponding to the gas concentration, so that the infrared light with the specific wavelength can be obtained according to the specific wavelengthDetermining SO according to the variation of infrared light intensity 2 The gas concentration.
Preferably, the air inlet pipe 10 is provided with a temperature sensor 12 and a pressure sensor 13, the temperature sensor 12 can detect the temperature of the gas to be measured, and the measured SO can be detected according to the temperature of the gas to be measured 2 Concentration, CO 2 The concentration, the CO concentration, and the HC concentration are compensated and corrected. The pressure sensor 13 can detect the pressure of the gas to be detected, so that the condition of tail gas emission of the ship engine can be detected more comprehensively.
In addition, the marine engine tail gas detection device further comprises a heater, wherein the heater is arranged in the gas chamber 1 to heat each gas flow channel 2, so that the gas flow channels are in a set working temperature range, and a more accurate gas concentration value is obtained.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that they are relative concepts that may be modified in various manners of use and placement and that the use of directional terms should not be taken to limit the scope of what is claimed.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. The utility model provides a marine engine tail gas detection device which characterized in that includes:
the gas chamber comprises four gas channels for the gas to be measured to flow through respectively, and the gas inlet ends of the four gas channels are respectively provided with SO 2 Optical filter, CO 2 An optical filter, a CO optical filter, and an HC optical filter;
an infrared light emitter disposed at one side of the gas chamber to emit light toward the SO 2 Optical filter, the CO 2 The optical filter, the CO optical filter and the HC optical filter emit infrared light and enable the infrared light to enter each gas flow channel respectively;
the infrared light detector is arranged on the other side of the gas chamber and used for receiving the infrared light output by each gas flow passage;
and the signal processor is connected with the infrared light detector to acquire the intensity of the infrared light output by each gas flow passage SO as to calculate the SO 2 Concentration, CO 2 Concentration, CO concentration, and HC concentration.
2. The marine engine exhaust gas detection device according to claim 1, characterized in that: the gas inlet pipe is connected with the gas inlet end of each gas flow passage, and the gas outlet pipe is connected with the gas outlet end of each gas flow passage.
3. The marine engine exhaust gas detection apparatus according to claim 2, wherein: and the air inlet pipe is provided with a temperature sensor and a pressure sensor.
4. The marine engine exhaust gas detection apparatus according to claim 2, wherein: an air pump is arranged on the air inlet pipe.
5. The marine engine exhaust gas detection apparatus according to claim 2, wherein: the air inlet pipe is characterized by further comprising a membrane dryer, and the membrane dryer is arranged on the air inlet pipe.
6. The marine engine exhaust gas detection device according to claim 1, characterized in that: the gas heating device further comprises a heater, wherein the heater is arranged in the gas chamber to heat each gas flow passage.
7. The marine engine exhaust gas detection device according to claim 1, characterized in that: the signal processor is also connected with the infrared light emitter to control the frequency and wavelength of infrared light emitted by the infrared light emitter.
8. The marine engine exhaust gas detection device according to claim 1, characterized in that: the gas flow channels are arranged in parallel.
9. The marine engine exhaust gas detection device according to claim 1, characterized in that: the gas flow channel is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221013938.3U CN217332160U (en) | 2022-04-25 | 2022-04-25 | Marine engine tail gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221013938.3U CN217332160U (en) | 2022-04-25 | 2022-04-25 | Marine engine tail gas detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217332160U true CN217332160U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221013938.3U Active CN217332160U (en) | 2022-04-25 | 2022-04-25 | Marine engine tail gas detection device |
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| Country | Link |
|---|---|
| CN (1) | CN217332160U (en) |
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2022
- 2022-04-25 CN CN202221013938.3U patent/CN217332160U/en active Active
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