CN212301229U - Photographic diesel mechanical smoke detection device - Google Patents

Abstract

The utility model relates to a detection device. The purpose provides a formula of shooing diesel machinery smoke intensity detection device, and the device has the characteristics that the testing result is reliable and stable, the precision is high. The technical scheme is as follows: the shooting type diesel machinery smoke intensity detection device comprises a shooting type ringer Mannheim smoke intensity detector; the method is characterized in that: the device is still including setting up in the microenvironment pipe-line installation that formula of shooing lingemann smoke intensity detector front side and with formula of shooing lingemann smoke intensity detector intercommunication and setting up in formula of shooing lingemann smoke intensity detector rear side and with the light transmission method light tight smoke intensity detector of formula of shooing lingemann smoke intensity detector intercommunication.

Description

Shooting type smoke intensity detection device for diesel machinery

Technical Field

The utility model relates to a detection device specifically is diesel machinery smoke intensity detection device.

Background

The method is implemented according to GB 36886 plus 2018 exhaust smoke limit and measurement method of the non-road mobile diesel engine, and the smoke detection method is implemented by referring to national standard GB3847-2018 emission limit and measurement method (free acceleration method and loading deceleration method) of pollutants for diesel vehicles. National standard GB 3847-2018' pollutant emission limit value and measurement method (free acceleration method and loading deceleration method) of diesel vehicles is mainly used for detecting pollution emission of diesel vehicles (automobiles), detection objects mainly comprise oxynitride content, Ringelmann smoke intensity and opaque smoke intensity (light absorption coefficient and opacity), and detection methods are divided into a free acceleration method and a loading deceleration method. The free acceleration method is suitable for detecting the light-tight smoke intensity and the ringer-Mannheim smoke intensity; the loading deceleration method is suitable for detecting three objects of oxynitride content, opaque smoke intensity and ringer-Mannesm smoke intensity (equipment such as a chassis dynamometer, jacking equipment, a central control system and the like must be configured on a field, and the field is completed by a plurality of persons, a plurality of points and a plurality of devices and is generally used for motor vehicle inspection). The national standard GB 36886-.

The light-tight smoke meter can detect black smoke in diesel engine exhaust, can detect blue smoke and white smoke emission, has strong detection capability on low-concentration visible pollutants, and can realize continuous measurement of exhaust smoke intensity. The light-tight smoke meter is divided into a full-flow light-tight smoke meter (all exhaust flows through the light channel) and a split-flow light-tight smoke meter (part exhaust flows through the light channel), and the split-flow measurement principle is adopted in the light-tight smoke meter in China at present.

The tobacco smoke detection of the ringer Mannheim is realized by a filter paper method and an image comparison method, D5.1 and D5.2 in annex D of national standard GB3847-2018 clearly determine the observation position, conditions and the observation method, the tobacco smoke detection result of the method is greatly influenced by weather and human random factors, the detection is generally not recommended to be carried out in environments such as rainy and snowy days, foggy days and wind speeds of more than 4.5m/s, the detection result in sunny days and cloudy days needs to be manually adjusted according to experience, the accuracy of the detection result is insufficient, and further improvement is needed.

When the instrument is used for detecting the lingemann smoke intensity and the light-tight smoke intensity of a non-road mobile diesel engine, the following defects exist: 1. two times of detection are needed; 2. the lingemann smoke intensity is greatly influenced by human factors, weather and environment, and the data reliability is low; 3. according to the national standard GB 36886-2018 judgment rule, secondary comprehensive judgment is needed when the product is qualified; 4. the field ringer Mannheim detection data must be recorded manually, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned background art, provide a formula of shooing diesel machinery smoke intensity detection device, the device has characteristics that testing result is reliable and stable, the precision is high.

The utility model provides a technical scheme is:

the shooting type diesel machinery smoke intensity detection device comprises a shooting type ringer Mannheim smoke intensity detector; the method is characterized in that: the device is still including setting up in the microenvironment pipe-line installation that formula of shooing lingemann smoke intensity detector front side and with formula of shooing lingemann smoke intensity detector intercommunication and setting up in formula of shooing lingemann smoke intensity detector rear side and with the light transmission method light tight smoke intensity detector of formula of shooing lingemann smoke intensity detector intercommunication.

Microenvironment pipeline installation includes that one end sets up the air inlet and the other end and the organism of formula of shooing lingemann smoke intensity detector import intercommunication, is provided with the heating module that is used for controlling the flue gas temperature in the organism, the temperature monitoring module of monitoring flue gas temperature and the pressure sensor of monitoring flue gas pressure, and the organism middle part still is provided with the valve that is used for controlling flue gas plume speed and carries out the pressure fine setting.

The light transmission method light-tight smoke detector comprises an exhaust funnel, a sensing terminal and a signal processing host, wherein one end of the exhaust funnel is communicated with the outlet of the photographing type ringer Mannheim smoke detector, the other end of the exhaust funnel is the outlet of the photographing type ringer Mannheim smoke detector, the sensing terminal is installed on the exhaust funnel, and the signal processing host is communicated with the sensing terminal through an optical fiber.

The sensing terminal consists of an optical channel with a gas collection chamber and two optical fibers; wherein the tubulose light channel is installed on the aiutage with the mode of transversely running through, and its middle part gas collection chamber is located the aiutage and pipe wall both sides transversely link up to do benefit to the flue gas circulation of being examined.

The central line of the transverse through part is superposed with the axis of the exhaust cylinder.

The detection device is also provided with a communication interface so as to meet the requirements of reading and storing field detection data.

The utility model discloses a theory of operation is: the method comprises the following steps that measured flue gas firstly enters a microenvironment pipeline device 100 through a gas inlet 1, the temperature of the gas inlet is controlled by a temperature monitoring module 5 and a heating module 2, and the pressure in a pipeline is monitored by a pressure sensor 4; the valve 3 is arranged in the middle part and is used for controlling the fine adjustment of the speed and the pressure of the smoke plume; then the measured smoke enters the photographing type ringelman smoke detector 200, and the precision and the result reliability of ringelman detection can be effectively improved through the photographing type blackness meter with the deep learning function and the photographing and AI intelligent algorithm module. Finally, the measured smoke enters the light transmission method light-tight smoke intensity detector 300, and when the smoke passes through the gas collection chamber 8, the information of the received light intensity can be used for representing the concentration of the particulate matters through the detection light intensity and the later compensation correction.

The utility model discloses a unique point (compare with current the same or similar technique):

1) the microenvironment pipeline device realizes the functions of controlling and monitoring the temperature of the flue gas and monitoring the air pressure;

2) the shooting type Ringelmann smoke intensity detection realizes the accurate detection of the blackness with the precision of 0.1;

3) the light transmission method is used for light-tight smoke intensity detection, and compared with a light-tight smoke intensity meter adopting a split-flow principle, the light-tight smoke intensity meter is simple in structure, free of pollution in a gas production chamber and capable of meeting the requirement of long-term use and free of cleaning;

the three functions are integrated, the requirements of quality assurance and control in the process of detecting the Ringelmann smoke intensity and the light-tight smoke intensity, which meet the requirements of GB 36886 + 2018, are met, and the aim of accurate detection is fulfilled.

The utility model has the advantages that:

1. integrating a photographing type ringer Mannesmann smoke detector and a light transmission method light-tight smoke detector into a set of device, synchronously detecting, and judging the result at one time;

2. the photographing type ringer Mannesmann smoke detector and the light transmission method are adopted to prevent the light from transmitting the smoke detector, the functions of the two existing instruments are integrated into one instrument, and the field detection is convenient;

3. a microenvironment pipeline device is specially designed, the artificial, weather and environmental influences in the detection of a Ringelmann smoke degree filter paper method and a picture comparison method in GB 36886-2018 are eliminated, the detection result is stable and reliable, and the detection data is more accurate.

4. Realize the paperless record of lingemann smoke intensity, light tight smoke intensity detection data, improve on-the-spot detection efficiency, satisfy the inspection institution and detect the demand by a large amount.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic structural diagram of a sensing terminal in the light transmission opaque smoke detector of the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments, which are illustrated in the accompanying drawings, but the present invention is not limited to the following embodiments.

The utility model discloses by little environmental pipe device 100 of front and back UNICOM, formula of shooing ringer Mann smoke detector 200, the light transmission method light tight smoke detector 300 triplex (the structural principle is seen in figure 1). The first part of the microenvironment piping installation, using the temperature monitoring module 5 and the heating module 2 (preferably an electric heater), controls the air inlet temperature while monitoring the pressure in the pipe using the pressure sensor 4. Meanwhile, the portable multifunctional electric water heater has the functions of being detachable and portable, and is convenient for cleaning and meeting the field use requirements; the valve 3 is used for controlling the flue opening and the smoke plume speed adjusting function, so that the influence of the external environment during the forest emann and light-tight smoke intensity measurement is reduced; the diesel oil mobile machine has the advantages of flexible and changeable joint, reasonable design and adjustable installation height, and can be used for the requirements of field detection and the like of different diesel oil mobile machines. The second part is the lingemann smoke intensity detector (prior art), mainly is furnished with the formula of shooing blackness meter that possesses the deep learning function to and shoot and AI intelligent algorithm module. When the device is used, smoke plummets are introduced into the high-definition photographing inner cavity 9 through the guide groove, a high-definition photographing camera 10 (photographing type blackness meter) with an automatic LED light supplementing function is arranged below the photographing inner cavity, and the upper part of the photographing inner cavity is provided with the 0-degree background contrast plate 6, so that a white background high-definition black and white photo can be photographed; the built-in deep learning blackness recognition algorithm module can realize the Ringelmann blackness with the detection precision of 0.1, and can effectively improve the Ringelmann detection precision and the result reliability. The third part is a light transmission method light-tight smoke detector (light transmission method light-tight smoke detection principle: according to the light scattering principle, particles and molecules can generate light scattering phenomenon under the irradiation of light, when a beam of parallel monochromatic light is incident to a measured particle field, the light intensity can be attenuated under the influence of scattering and absorption around the particles, the relative attenuation rate of the incident light passing through the field to be measured is changed, the relative attenuation rate basically reflects the relative concentration of dust in the field to be measured linearly, the intensity of the light is in direct proportion to the intensity of an electric signal converted by photoelectricity, the relative attenuation rate can be obtained by measuring the electric signal, and further the concentration of the dust in the field to be measured can be measured), the third part comprises an exhaust funnel 11, a sensing terminal arranged on the exhaust funnel and a signal processing host (omitted in the figure) communicated with the sensing terminal through an optical fiber 12; the sensing terminal is composed of an optical channel with a gas collection chamber 8 and two optical fibers 12, wherein the optical channel 13 of a tubular structure is installed on the exhaust funnel in a transverse penetrating mode, the gas collection chamber 8 in the middle of the tubular structure is located in the exhaust funnel, two sides of the tube wall are transversely penetrated, the central line of the transverse penetrating position is superposed with the axis of the exhaust funnel, and therefore when detected smoke transversely passes through the gas collection chamber, the detected smoke can be irradiated by detection light oppositely emitted in the middle of the optical channel through the optical fibers). The detector simplifies the measurement difficulty of the existing flow-dividing type light-tight smoke meter (the effective length of an optical channel is not less than 0.43m, the structure is huge, the detector is easy to pollute and fog, and the pollution problem needs to be solved by using an air curtain technology), and the detector has a simple structure and avoids the pollution detection target. When the detected flue gas passes through the gas collecting chamber, the information of the received light intensity can be used for representing the concentration of the particulate matters through the compensation and the correction of the light intensity detection and algorithm module. Particularly, the gas production chamber can be further provided with multi-stage filtering or particulate blocking, so that the light correlation element is prevented from being polluted, and the long-term normal operation of the sensor is ensured.

The utility model discloses use two kinds of new detection method integrated forms of formula of shooing ringer's Mannesmann smoke intensity + light transmission method light tight smoke intensity, broken through traditional picture comparison method + shunting light tight smoke intensity method and detected respectively, survey inaccurate current situation, the while special design's microenvironment pipe device, except possessing to flue gas temperature, pressure on-line monitoring, can simulate microenvironment (temperature in the regulation pipeline in order to obtain stable microenvironment), technical requirement in GB 36886 + 2018 has been satisfied, its testing process quality assurance and control requirement have still been guaranteed. The photographing type ringer Mannesmann smoke detector utilizes a high-definition camera and an LED to automatically supplement light, captures blackness under different working conditions under the same illumination background at high speed, and obtains a stable and reliable detection result through an intelligent algorithm module. Compared with a shunting type light-tight smoke meter detector, the transmission-method light-tight smoke detector greatly reduces the volume of the detector and avoids the influence of water vapor and smoke screen pollution. In addition, the device is provided with a communication interface, so that the requirements of reading and storing field detection data are met, and the field detection efficiency is improved.

Claims (6)

1. the photographic type diesel mechanical smoke detection device, comprises the photographed type Ringelmann smoke detector (200); it is characterized in that: this device also comprises and is arranged on the photographed type Ringelmann smoke detector front side and is identical to the photographed type Ringelmann smoke detector. A microenvironment duct device (100) connected to a Ringelmann smoke detector, and a light transmission method opaque smoke disposed on the rear side of the photographic Ringelmann smoke detector and communicated with the photographic Ringelmann smoke detector Degree detector (300). 2. The photographic diesel mechanical smoke detection device according to claim 1, characterized in that: the microenvironment pipeline device comprises that one end is provided with an air inlet (1) and the other end is provided with a photographed Ringelmann smoke detection. A body connected to the inlet of the device is provided with a heating module (2) for controlling the temperature of the flue gas, a temperature monitoring module (5) for monitoring the temperature of the flue gas, and a pressure sensor (4) for monitoring the pressure of the flue gas, and the middle part of the body is also provided with There are valves (3) for controlling the velocity of the flue gas plume and for fine-tuning the pressure. 3. photographic diesel mechanical smoke detection device according to claim 2, is characterized in that: described light transmission method opaque smoke detector comprises that one end communicates with photographed Ringelmann smoke detector outlet and the other end It is the exhaust cylinder (11) of the outlet, the sensing terminal installed on the exhaust cylinder, and the signal processing host connected to the sensing terminal through the optical fiber. 4. The photographic diesel mechanical smoke detection device according to claim 3, wherein the sensing terminal is composed of an optical channel (13) with a gas extraction chamber (8) and two optical fibers (12) ; wherein the tubular optical channel is installed on the exhaust cylinder in a transversely penetrating manner, and the middle part of the gas extraction chamber is located in the exhaust cylinder and the two sides of the pipe wall are transversely penetrated to facilitate the circulation of the tested flue gas. 5 . The photographic diesel mechanical smoke detection device according to claim 4 , wherein the center line of the transversely penetrating portion coincides with the axis of the exhaust pipe. 6 . 6 . The photographic diesel mechanical smoke detection device according to claim 5 , wherein the detection device is further equipped with a communication interface to meet the requirements for reading and saving on-site detection data. 7 .

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