CN215894318U - Smoke detector for diesel engine - Google Patents

Abstract

The application provides a smoke intensity detection device of diesel machinery, which comprises a first shell, wherein a first air inlet and a first exhaust port are formed in the first shell; the first detection unit is arranged in the first shell and used for detecting the Ringelmann blackness of the sampled gas; the first detection unit comprises a first smoke chamber; the first smoke chamber is provided with an air outlet end and an air inlet end; the second detection unit is arranged in the first shell and used for detecting the concentration of the particulate matters in the sampling gas; the second detection unit comprises a second smoke chamber; the second smoking chamber is provided with an air inlet end and an air outlet end; the air inlet end of the second smoke chamber is communicated with the air outlet end of the first smoke chamber; the air outlet end of the second smoke chamber is communicated with the first exhaust port; a first exhaust unit having an inlet end and an outlet end; the air inlet end of the first exhaust unit is communicated with the first air inlet; the air outlet end of the first exhaust unit is communicated with the interior of the second smoke chamber; the application can realize the image detection of the Ringelmann blackness of the sampled gas and the synchronous detection of the concentration of the particulate matters, and the detection efficiency is high.

Description

Smoke detector for diesel engine

Technical Field

The application relates to the technical field of diesel engine smoke intensity detection, in particular to a diesel engine 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.

Traditional diesel machinery smoke intensity detection need carry out twice detection alone, just can accomplish linggemann smoke intensity detection and light tight smoke intensity detection, and detection efficiency is low.

SUMMERY OF THE UTILITY MODEL

The application aims at the problems and provides a smoke intensity detection device for diesel machinery.

In a first aspect, the present application provides a diesel engine smoke detection device, including:

the air conditioner comprises a first shell, a second shell and a third shell, wherein the first shell is provided with a first air inlet and a first exhaust port;

the first detection unit is arranged in the first shell and used for detecting the Ringelmann blackness of the sampled gas; the first detection unit comprises a first smoke chamber; the first smoke chamber is provided with an air outlet end and an air inlet end for introducing sampling gas; the air inlet end of the first smoke chamber is communicated with the outside of the first shell;

the second detection unit is arranged in the first shell and used for detecting the concentration of the particulate matters in the sampling gas; the second detection unit comprises a second smoking chamber; the second smoking chamber has an air inlet end and an air outlet end; the air inlet end of the second smoke chamber is communicated with the air outlet end of the first smoke chamber; the air outlet end of the second smoke chamber is communicated with the first exhaust port;

a first exhaust unit disposed within the first housing; the first exhaust unit is provided with an air inlet end and an air outlet end; the air inlet end of the first exhaust unit is communicated with the first air inlet; and the air outlet end of the first exhaust unit is communicated with the interior of the second smoke chamber.

According to the technical scheme provided by some embodiments of the application, the second smoking chamber is provided with at least two air outlet ends; the second smoke chamber is connected with first gas transmission channels which correspond to the gas outlet ends of the second smoke chamber one by one; the first gas transmission channel is arranged opposite to the gas outlet end of the second smoke chamber; the first gas transmission channel is used for communicating the gas outlet end of the first exhaust unit with the interior of the second smoke chamber.

According to the technical scheme provided by some embodiments of the application, one end of the first smoke chamber is connected with a camera module for taking a picture of the sampled gas in the first smoke chamber; a white background plate is arranged on one side, opposite to the camera module, in the first smoke chamber; and a lens antifouling structure is arranged in front of the lens of the camera module.

According to an aspect provided in some embodiments of the present application, the anti-fouling lens structure includes:

the external piece is fixedly connected with the lens of the camera module; the external piece is provided with an annular outer frame, and a space formed by the annular outer frame corresponds to a lens of the camera module;

antifouling piece, antifouling piece with the connection can be dismantled to annular frame.

According to the technical scheme provided by some embodiments of the application, an annular clamping groove surrounding the space is arranged in the annular outer frame, and an insertion hole communicated with the annular clamping groove is formed in one side of the annular outer frame; the antifouling piece can enter the annular outer frame along the insertion hole and be clamped with the annular clamping groove.

According to the technical scheme provided by some embodiments of the application, the antifouling piece comprises a frame and an antifouling sheet embedded in the frame; a plug-in unit is arranged on one side of the frame exposed out of the insertion hole; a second strip-shaped through hole is formed in the first shell at a position corresponding to the plug-in unit; one end of the plug-in unit, which is far away from the frame, extends to the outside of the first shell through the second strip-shaped through hole.

According to the technical scheme provided by some embodiments of the application, one end of the white background plate is inserted into the first smoke chamber; a first strip-shaped through hole is formed in the position, corresponding to the white background plate, of the first shell; one end of the white background plate exposed outside the first smoke chamber extends to the outside of the first shell through the first strip-shaped through hole.

According to the technical scheme provided by some embodiments of the application, a display screen is arranged outside the first shell; the first detection unit and the second detection unit are respectively connected with the display screen; the display screen is used for displaying the detection results of the first detection unit and the second detection unit.

According to the technical scheme provided by some embodiments of the application, a portable handle is arranged outside the first shell.

According to the technical scheme provided by some embodiments of the application, a microenvironment heating constant temperature unit is arranged on the air inlet end of the first smoke chamber; the microenvironment heating constant-temperature unit comprises a constant-temperature heating chamber; a temperature sensor and a heating module are arranged in the constant-temperature heating chamber; the temperature sensor and the heating module are respectively connected with a controller; the temperature sensor is used for collecting a temperature signal in the constant-temperature heating chamber and sending the temperature signal to the controller; the controller controls the on/off of the heating module according to the temperature signal.

According to the technical scheme provided by some embodiments of the application, a pressure sensor for detecting the pressure of the sampling gas is further arranged in the constant-temperature heating chamber.

In a second aspect, the present application provides another diesel engine smoke intensity detection device, including:

the second shell is provided with a second air inlet and a second air outlet;

the third detection unit is arranged in the second shell and used for detecting the concentration of the particulate matters in the sampling gas; the third detection unit comprises a third smoke chamber; the third smoke chamber is provided with an air inlet end for introducing sampling gas and at least two air outlet ends; the air inlet end of the third smoke chamber is communicated with the outside of the second shell; the air outlet end of at least one third smoke chamber is connected with a fourth detection unit;

the fourth detection unit is arranged in the second shell and used for detecting the Ringelmann blackness of the sampled gas; the fourth detection unit comprises a fourth smoke chamber; the fourth smoking chamber has an air inlet end and an air outlet end; the air inlet end of the fourth smoke chamber is communicated with the air outlet end of the third smoke chamber; the air outlet end of the fourth smoke chamber is communicated with the outside of the second shell;

a second exhaust unit disposed within the second housing; the second exhaust unit is provided with an air inlet end and an air outlet end; the air inlet end of the second exhaust unit is communicated with the second air inlet; and the air outlet end of the second exhaust unit is communicated with the inside of the third smoke chamber.

Compared with the prior art, the beneficial effect of this application: according to the diesel engine smoke intensity detection device, the first detection unit and the second detection unit are integrated in the first shell to obtain the diesel engine smoke intensity detection device, the device can simultaneously realize the detection of the Ringelmann blackness of the sampled gas and the detection of the concentration of particulate matters, and the detection efficiency is high; the arrangement of the first shell enables detection to be free from the influence of the external environment, and the reliability of detection data is high; the first exhaust unit is arranged, negative pressure is formed when the first exhaust unit works, so that sampled gas can enter the first smoke chamber and can enter the second smoke chamber from the first smoke chamber, and the gas outlet end of the first exhaust unit is arranged opposite to the gas outlet end of the second smoke chamber, so that the sampled gas can be discharged; in some embodiments of the present application, the two first gas transmission channels are connected to the gas outlet end of the first exhaust unit, so as to facilitate the flow splitting of the flue gas; the lens anti-fouling structure is arranged, so that the lens of the camera module can be resisted by pollutants in the sampled gas, and the pollution of the pollutants to the lens is prevented; the anti-fouling part of the lens anti-fouling structure is detachably connected with the external part, so that the anti-fouling part is convenient to mount and dismount, and the anti-fouling part is convenient to clean; through setting up microenvironment heating constant temperature unit, can realize the monitoring to the temperature and the pressure of sampling gas, be favorable to keeping the constant temperature and isopiestic pressure's testing environment to be favorable to ensureing the accuracy reliable of testing result.

Drawings

Fig. 1 is a schematic view of an internal structure of a diesel engine smoke intensity detection device provided in embodiment 1 of the present application;

fig. 2 and 3 are schematic perspective structural views of a smoke detection device of a diesel engine provided in embodiment 1 of the present application;

fig. 4 is a schematic structural diagram of a first detection unit of the diesel engine smoke intensity detection device provided in embodiment 1 of the present application;

fig. 5 is a schematic structural diagram of an external attachment of a lens anti-fouling structure of the diesel engine smoke detection device provided in embodiment 1 of the present application;

fig. 6 is a schematic structural view of a lens anti-fouling structure anti-fouling member of the diesel engine smoke detection device provided in embodiment 1 of the present application;

fig. 7 is a schematic mounting diagram of a lens anti-fouling structure of a diesel engine smoke detection device provided in embodiment 1 of the present application;

fig. 8 is a schematic structural view of a second detection unit and a first exhaust unit of the diesel engine smoke detection device provided in embodiment 1 of the present application;

fig. 9 is a schematic structural diagram of a smoke detection device of a diesel engine according to embodiment 2 of the present application.

The text labels in the figures are represented as:

1. a first housing; 10. a first air inlet; 11. a first exhaust port; 12. a portable handle; 13. a display screen; 14. a wifi module; 15. a battery;

2. a first detection unit; 20. a first smoking chamber; 21. a white background plate; 22. a camera module; 220. mounting edges; 23. a lens antifouling structure; 230. an annular outer frame; 231. an annular neck; 232. an insertion opening; 233. a frame; 234. an antifouling sheet; 235. drawing the plug-in unit; 236. a groove; 237. a first magnet; 238. a second magnet;

3. a second detection unit; 30. a second smoking chamber;

4. a first exhaust unit; 40. a first gas transmission channel;

5. a second housing; 6. a third detection unit; 7. a fourth detection unit; 8. a second exhaust unit; 80. a second gas transmission channel.

Detailed Description

The following detailed description of the present application is given for the purpose of enabling those skilled in the art to better understand the technical solutions of the present application, and the description in this section is only exemplary and explanatory, and should not be taken as limiting the scope of the present application in any way.

Example 1

Referring to fig. 1 to 3, the present embodiment provides a smoke detection device for a diesel engine, including a first housing 1, a first detection unit 2, a second detection unit 3, and a first exhaust unit 4.

In this embodiment, the first casing 1 is in a cube shape, and includes a front side wall, a rear side wall, a left side wall, a right side wall, a top wall, and a bottom wall; wherein, the top wall is provided with a first air inlet 10, and the first air inlet 10 consists of a plurality of small through holes; two first exhaust ports 11 are opened on the bottom wall.

A portable handle 12 is arranged on the top wall of the first shell 1; a display screen 13 is arranged on the front side wall of the first shell 1; the display screen 13 is a touch display screen 13; the first detection unit 2 and the second detection unit 3 are respectively connected with the display screen 13; the display screen 13 is configured to display detection results of the first detection unit 2 and the second detection unit 3, and an operator may also set detection parameters and send a detection instruction for the first detection unit 2 and the second detection unit 3 through the display screen 13; the first shell 1 is further provided with a wifi module 14, the first detection unit 2 and the second detection unit 3 are wirelessly connected with an intelligent terminal (such as a mobile phone, a tablet computer and the like) through the wifi module 14, so that a detection result is sent to the intelligent terminal, and in addition, an operator can also send a detection instruction, set detection parameters and the like from the intelligent terminal to the first detection unit 2 and the second detection unit 3 through the wifi module 14; a battery 15 is also arranged outside the first shell 1; the battery 15 is a high capacity lithium battery, and the battery 15 is used for supplying power to the first detection unit 2 and the second detection unit 3.

Referring to fig. 4, the first detection unit 2 is a photographing type ringelman smoke intensity detection device, which is in the prior art, is provided with a high-definition camera module, has an automatic light supplementing function of an LED, and can capture blackness of different working conditions at the same illumination background at high speed, and obtain a ringelman smoke intensity value through an intelligent algorithm; the first detection unit 2 is arranged in the first shell 1, is close to one side of the front side wall of the first shell 1, and is used for detecting the Ringelmann blackness of the sampled gas; the first detection unit 2 comprises a first smoking chamber 20; said first smoking chamber 20 having an outlet end and an inlet end; the air inlet end of the first smoke chamber 20 passes through a through hole in the front side wall of the first shell 1 and leads to the outside of the first shell 1, and the sampling gas of the diesel mechanical tail gas positioned outside the first shell 1 enters the inside of the first smoke chamber 20 through the air inlet end of the first smoke chamber 20 to be detected.

The first smoking chamber 20 is rectangular, and a white background plate 21 and a camera module 22 are respectively arranged at two ends of the first smoking chamber in the length direction.

The white background plate 21 is rectangular; the white background plate 21 is inserted into the first smoking chamber 20 through an opening on the side wall of the first smoking chamber 20, and a part of the white background plate is exposed outside the first smoking chamber 20; white background board 21 exposes first cigarette chamber 20 outside one end is passed and is located the outside of first casing 1 bar through-hole on the first casing 1 and extend to first casing 1, when needs clearance or change white background board 21, need not to open first casing 1, will first white background board 21 follow in the bar through-hole take out can, convenient and fast.

The camera module 22 is arranged on the opposite side of the white background plate 21 and is used for photographing and detecting the sampling gas entering the first smoke chamber 20; the camera module 22 contains a light supplement lamp, and because the lens part of the camera module 22 is located in the first closed smoke chamber 20, and the first smoke chamber 20 is located in the first shell 1, the brightness in the first smoke chamber 20 is not affected by the external environment, the light supplement lamp does not need to be automatically adjusted, and the brightness of the light supplement lamp is set to be a fixed value; the lens anti-fouling structure 23 is arranged in front of the lens of the camera module 22, and is used for blocking pollutants for the lens of the camera module 22, preventing the pollutants from polluting the lens, and being beneficial to protecting the lens of the camera module 22.

Referring to fig. 5 to 7, the lens anti-fouling structure 23 includes an outer connector and an anti-fouling part which are assembled and connected; the external component is integrally formed at the end of the first smoke chamber 20, and has an annular outer frame 230, and a space formed by the annular outer frame 230 corresponds to a lens of the camera module 22 to be protected; as shown in fig. 7, a mounting edge 220 extends outwards from the periphery of the lens of the camera module 22; the mounting edge 220 is provided with a first connecting hole; the annular outer frame 230 is provided with a second connecting hole; the first connecting hole and the second connecting hole are connected through a bolt, so that the camera module 22 and the lens anti-fouling structure 23 are fixedly connected.

As shown in fig. 5, the outer contour of the ring-shaped outer frame 230 is rectangular; an annular clamping groove 231 surrounding the space is arranged in the annular outer frame 230, and the annular clamping groove 231 is formed in the inner wall of the annular outer frame 230; an insertion opening 232 which can be communicated with the annular clamping groove 231 is formed in one side of the annular outer frame 230; the insertion opening 232 is rectangular in cross section; the anti-fouling member can enter the annular outer frame 230 along the insertion opening 232 and be clamped with the annular clamping groove 231; as shown in fig. 6, the stain-proofing member includes a frame 233 and a stain-proofing sheet 234 embedded in the frame 233; the frame 233 is used for being clamped with the ring-shaped clamping groove 231; the antifouling sheet 234 is made of transparent glass, so that the normal use of the lens of the camera module 22 cannot be influenced, namely the shooting of the lens cannot be influenced, and the antifouling sheet 234 is attached to the lens of the camera module 22 and used for preventing smoke and the like from contacting with the lens;

further, a plug-in unit 235 is connected to one side of the frame 233 exposed to the insertion port 232; a second strip-shaped through hole is formed in the first shell 1 at a position corresponding to the plug-in unit 235; one end of the plug-in component 235 far away from the frame 233 extends to the outside of the first shell 1 from the second strip-shaped through hole; the antifouling piece is detachably connected with the annular outer frame 230, and the first shell 1 is provided with the second strip-shaped through hole, so that the antifouling piece is convenient to mount and dismount, and is convenient to clean; one end of the plug-in component 235, which is located outside the first shell 1, is provided with a groove 236 convenient for holding, so that when an operator plugs in and plugs out the anti-fouling component, the operator can conveniently exert force with fingers; two accommodating grooves are arranged on one side of the annular outer frame 230 with the insertion opening 232; the two accommodating grooves are positioned at two sides of the insertion opening 232; a first magnet 237 is arranged in the accommodating groove; a second magnet 238 is arranged on the plug-in piece 235 at a position corresponding to the first magnet 237; the first magnet 237 and the second magnet 238 have opposite polarities; the arrangement can ensure that the anti-fouling part and the external part are stably connected.

Referring to fig. 8, the second detecting unit 3 is a light transmission opaque smoke intensity detecting device, which is a prior art and is equipped with a light transmission sensor, and the light transmission opaque smoke intensity detecting device obtains smoke particulate matter concentration, i.e. an opaque smoke intensity value, by detecting light intensity and compensating and correcting a specific algorithm, and has a cleaning-free function for long-term use; the second detection unit 3 is arranged in the first housing 1 and close to one side of the rear side wall of the first housing 1, and is used for detecting the particulate matter concentration (namely, the light absorption coefficient) of the sampling gas; the second detection unit 3 comprises a second smoking chamber 30; the second smoking chamber 30 has one air inlet end and two air outlet ends; the air inlet end of the second smoking chamber 30 is arranged on the side surface of the second smoking chamber 30 close to the air outlet end of the first smoking chamber 20 and is communicated with the air outlet end of the first smoking chamber 20; the air outlet ends of the two second smoking chambers 30 are arranged along the length direction of the second smoking chamber 30, and the air outlet ends of the two second smoking chambers 30 are respectively positioned at two ends of the bottom of the second smoking chamber 30; the air outlet end of the second smoke chamber 30 is communicated with the first exhaust port 11 at the corresponding position.

The top of the second smoking chamber 30 is connected with first gas transmission channels 40 corresponding to the gas outlet ends of the second smoking chamber 30 one by one, that is, the two ends of the top of the second smoking chamber 30 are respectively connected with the first gas transmission channels 40 communicated with the inside of the second smoking chamber 30.

The first exhaust unit 4 is a fan which is arranged in the first casing 1 and is close to one side of the top wall of the first casing 1; the first exhaust unit 4 has an inlet end and an outlet end; the air inlet end of the first exhaust unit 4 is communicated with the first air inlet 10; the two first gas transmission channels 40 are respectively communicated with the gas outlet ends of the first exhaust units 4; the extension lines of the two first air transmission channels 40 form an inverted V shape.

Further, a microenvironment heating constant temperature unit is arranged on the air inlet end of the first smoke chamber 20; the microenvironment heating constant-temperature unit comprises a constant-temperature heating chamber; a temperature sensor and a heating module are arranged in the constant-temperature heating chamber; the temperature sensor and the heating module are respectively connected with a controller; the temperature sensor is used for collecting a temperature signal in the constant-temperature heating chamber and sending the temperature signal to the controller; the controller controls the heating module to be turned on/off according to the temperature signal; specifically, a first temperature value and a second temperature value are preset in the controller, and when the temperature value represented by the temperature signal sent by the temperature sensor acquired by the controller is lower than the first temperature value, the controller controls the heating module to start working so as to heat the interior of the constant-temperature heating chamber; when the temperature value represented by the temperature signal sent by the temperature sensor acquired by the controller is higher than the second temperature value, the controller controls the heating module to stop working; wherein the first temperature value is typically set to 70 deg.c and the second temperature value is typically set to 80 deg.c. In winter, under the condition of too low outdoor temperature, the movement performance of particulate matters in the smoke changes, and the detection result is influenced; and the micro-environment heating thermostat unit may be configured to maintain a substantially constant temperature of the sampled gas entering the first smoking chamber 20.

Further, a pressure sensor for detecting the pressure of the sampling gas is also arranged in the constant-temperature heating chamber; the pressure sensor is connected with the controller; the pressure sensor is used for detecting the pressure value of the sampled gas in the constant-temperature heating chamber in real time and sending the pressure value to the controller; the controller adjusts the opening degree of an air inlet valve for controlling the air inflow of the sampling gas according to the acquired pressure value of the sampling gas, and is beneficial to keeping constant pressure in the constant-temperature heating chamber basically.

When the diesel engine smoke intensity detection device provided by the embodiment is used, sampling gas positioned outside the first shell enters the first smoke chamber through the air inlet end of the first smoke chamber, then enters the second smoke chamber through the air outlet end of the first smoke chamber and the air inlet end of the second smoke chamber, the lingermann blackness detection is completed in the first smoke chamber, and the particulate matter concentration detection is completed in the second smoke chamber; the first exhaust unit sucks air from the first air inlet, blows the air to the second smoke chamber through the two first air transmission channels, blows out sampling gas in the second smoke chamber through the two air outlet ends of the second smoke chamber respectively, and exhausts the air out of the first shell through the first exhaust port.

According to the diesel engine smoke intensity detection device provided by the embodiment of the application, the first detection unit and the second detection unit are integrated in the first shell, so that the detection of the Ringelmann blackness of the sampled gas and the detection of the concentration of particulate matters can be realized; the first exhaust unit is arranged, and the air outlet end of the first exhaust unit is connected with the two first air transmission channels, so that smoke gas is favorably divided, and the first exhaust unit forms negative pressure during working, so that sampled gas is favorably fed into the first smoke chamber and fed into the second smoke chamber from the first smoke chamber; the gas outlet end of the first gas exhaust unit is arranged opposite to the gas outlet end of the second smoke chamber, so that the sampling gas is discharged; the lens anti-fouling structure is arranged, so that the lens of the camera module can be resisted by pollutants in the sampled gas, and the pollution of the pollutants to the lens is prevented; the anti-fouling part of the lens anti-fouling structure is detachably connected with the external part, so that the anti-fouling part is convenient to mount and dismount, and the anti-fouling part is convenient to clean; through setting up microenvironment heating constant temperature unit, can realize the monitoring to the temperature and the pressure of sampling gas, be favorable to keeping the constant temperature and isopiestic pressure's testing environment to be favorable to ensureing the accuracy reliable of testing result.

Example 2

The present embodiment provides another diesel engine smoke intensity detection device, which is different from that in embodiment 1 in that: in the embodiment 1, the Ringelmann blackness detection is carried out on the sampled gas, and then the particulate matter concentration detection is carried out on the sampled gas; in the embodiment, the positions of the photographing type ringelman smoke intensity detection device and the light transmission method light-tight smoke intensity detection device are exchanged, namely, the concentration of the particulate matters in the sampled gas is detected firstly, and then the ringelman black intensity of the sampled gas is detected; this embodiment will describe only the differences from embodiment 1.

As shown in fig. 9, the smoke detector for diesel engine according to the present embodiment includes: a second housing 5, a third detection unit 6, a fourth detection unit 7, and a second exhaust unit 8.

The top of the second shell 5 is provided with a second air inlet, and the bottom of the second shell is provided with two second air outlets.

The third detection unit 6 is a light transmission method light-tight smoke intensity detection device, is arranged in the second shell 5, and is used for detecting the concentration of the particulate matters in the sampling gas; the third detection unit 6 comprises a third smoke chamber; the third smoke chamber is provided with an air inlet end and two air outlet ends for introducing sampling gas; the air inlet end of the third smoke chamber is communicated with the outside of the second shell 5; the top of the third smoke chamber is connected with second gas transmission channels 80 which are in one-to-one correspondence with the gas outlet ends of the third smoke chamber, namely, the two ends of the top of the third smoke chamber are respectively connected with the second gas transmission channels 80 communicated with the inside of the third smoke chamber.

The fourth detection unit 7 is a photographing type ringelmann smoke intensity detection device which is arranged in the second shell 5 and is used for detecting the ringelmann blackness of the sampled gas; the fourth detection unit 7 comprises a fourth smoke chamber; the fourth smoking chamber has an air inlet end and an air outlet end.

For convenience of description, the two air outlet ends of the third smoke chamber are respectively marked as a left air outlet end and a right air outlet end; the left air outlet end of the third smoke chamber is communicated with the air inlet end of the fourth smoke chamber, and the air outlet end of the fourth smoke chamber is communicated with the second air outlet on the left side of the second shell 5; the right air outlet end of the third smoke chamber is directly communicated with the second air outlet on the right side of the second shell 5.

In other embodiments of the present application, it is also within the scope of the present application that two air outlet ends of the third smoke chamber are respectively connected to a fourth detection unit 7.

The second exhaust unit 8 is a fan, which is disposed inside the second housing 5; the second exhaust unit 8 has an inlet end and an outlet end; the air inlet end of the second exhaust unit 8 is communicated with the second air inlet; the air outlet end of the second exhaust unit 8 is respectively communicated with the two second air transmission channels 80; and the extension lines of the two first air transmission channels form an inverted V shape.

When the diesel engine smoke intensity detection device provided by the embodiment is used, sampling gas positioned outside the second shell enters the third smoke chamber through the gas inlet end of the third smoke chamber and then enters the fourth smoke chamber through one of the gas outlet ends of the third smoke chamber, the concentration detection of particulate matters in the sampling gas is completed in the third smoke chamber, and the Raman blackness detection of the sampling gas is completed in the fourth smoke chamber; the second exhaust unit sucks air from the second air inlet, blows the air to the third smoke chamber through the two second air transmission channels, blows out sampling gas located in the third smoke chamber through the two air outlet ends of the third smoke chamber respectively, and discharges a part of the sampling gas to the outside of the second shell through the second exhaust port after entering the fourth smoke chamber for detection, and directly discharges the other part of the sampling gas to the outside of the second shell through the second exhaust port.

According to the diesel engine smoke intensity detection device provided by the embodiment of the application, the third detection unit and the fourth detection unit are integrated in the second shell, so that the detection of the Ringelmann blackness of the sampled gas and the detection of the concentration of particulate matters can be realized; the second exhaust unit is arranged, and the air outlet end of the second exhaust unit is connected with the two second air transmission channels, so that smoke gas shunting is facilitated, and negative pressure is formed when the second exhaust unit works, so that sampled gas can enter a third smoke chamber; the gas outlet end of the second exhaust unit is arranged opposite to the gas outlet end of the third smoke chamber, so that the sampling gas is discharged conveniently.

The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations that may or may not be made to the present invention using the concepts and solutions of the present invention directed to other aspects are intended to be within the scope of the present invention.

Claims (12)

1. The utility model provides a diesel engine machine smoke intensity detection device which characterized in that includes:

the air conditioner comprises a first shell (1), wherein a first air inlet (10) and a first exhaust port (11) are formed in the first shell (1);

the first detection unit (2) is arranged in the first shell (1) and used for detecting the Ringelmann blackness of the sampled gas; the first detection unit (2) comprises a first smoking chamber (20); the first smoke chamber (20) is provided with an air outlet end and an air inlet end for introducing sampling gas; the air inlet end of the first smoke chamber (20) is communicated with the outside of the first shell (1);

the second detection unit (3) is arranged in the first shell (1) and used for detecting the concentration of the particulate matters in the sampling gas; the second detection unit (3) comprises a second smoking chamber (30); the second smoking chamber (30) having an air inlet end and an air outlet end; the air inlet end of the second smoke chamber (30) is communicated with the air outlet end of the first smoke chamber (20); the air outlet end of the second smoke chamber (30) is communicated with the first exhaust port (11);

a first exhaust unit (4) disposed within the first housing (1); the first exhaust unit (4) is provided with an air inlet end and an air outlet end; the air inlet end of the first exhaust unit (4) is communicated with the first air inlet (10); the air outlet end of the first exhaust unit (4) is communicated with the interior of the second smoke chamber (30).

2. The diesel engine smoke detection device according to claim 1, wherein said second smoke chamber (30) has at least two air outlet ends; the second smoke chamber (30) is connected with first gas transmission channels (40) which correspond to the gas outlet ends of the second smoke chamber (30) one by one; the first gas transmission channel (40) is arranged opposite to the gas outlet end of the second smoke chamber (30); the first gas transmission channel (40) is used for communicating the gas outlet end of the first exhaust unit (4) with the interior of the second smoke chamber (30).

3. The diesel engine smoke intensity detection device according to claim 1, wherein a camera module (22) for taking a picture of the sampled gas inside the first smoke chamber (20) is connected to one end of the first smoke chamber (20); a white background plate (21) is arranged on one side of the first smoke chamber (20) opposite to the camera module (22); and a lens antifouling structure (23) is arranged in front of the lens of the camera module (22).

4. The diesel engine smoke detection device according to claim 3, wherein said lens anti-fouling structure (23) comprises:

the external piece is fixedly connected with the lens of the camera module (22); the external connector is provided with an annular outer frame (230), and a space formed by the annular outer frame (230) corresponds to a lens of the camera module (22);

the antifouling piece is detachably connected with the annular outer frame (230).

5. The smoke detector of diesel engine according to claim 4, wherein a ring-shaped slot (231) surrounding said space is provided in said ring-shaped outer frame (230), and an insertion opening (232) communicating with said ring-shaped slot (231) is provided at one side of said ring-shaped outer frame (230); the antifouling piece can enter the annular outer frame (230) along the insertion opening (232) and be clamped with the annular clamping groove (231).

6. The diesel engine smoke detection device according to claim 5, wherein said antifouling member comprises a frame (233) and an antifouling sheet (234) embedded in said frame (233); a drawing-inserting piece (235) is arranged on one side, exposed to the inserting port (232), of the frame (233); a second strip-shaped through hole is formed in the position, corresponding to the plug-in component (235), of the first shell (1); one end of the drawing and inserting piece (235) far away from the frame (233) extends to the outside of the first shell (1) through the second strip-shaped through hole.

7. The diesel engine smoke detection device according to claim 3, wherein one end of said white background plate (21) is inserted in said first smoke chamber (20); a first strip-shaped through hole is formed in the position, corresponding to the white background plate (21), of the first shell (1); one end of the white background plate (21) exposed outside the first smoke chamber (20) extends to the outside of the first shell (1) through the first strip-shaped through hole.

8. The diesel engine smoke detection device according to claim 1, wherein a display screen (13) is provided outside the first housing (1); the first detection unit (2) and the second detection unit (3) are respectively connected with the display screen (13); the display screen (13) is used for displaying the detection results of the first detection unit (2) and the second detection unit (3).

9. The diesel engine smoke detection device according to claim 1, wherein a portable handle (12) is provided on the outside of the first housing (1).

10. The smoke detector of diesel machinery according to claim 1, wherein a micro-environment heating constant temperature unit is arranged on the air inlet end of the first smoke chamber (20); the microenvironment heating constant-temperature unit comprises a constant-temperature heating chamber; a temperature sensor and a heating module are arranged in the constant-temperature heating chamber; the temperature sensor and the heating module are respectively connected with a controller; the temperature sensor is used for collecting a temperature signal in the constant-temperature heating chamber and sending the temperature signal to the controller; the controller controls the on/off of the heating module according to the temperature signal.

11. The diesel engine smoke detection device of claim 10, wherein a pressure sensor for detecting the pressure of the sampling gas is further provided in the constant temperature heating chamber.

12. The utility model provides a diesel engine machine smoke intensity detection device which characterized in that includes:

the second shell (5), there are second air inlets and second air vents on the said second shell (5);

the third detection unit (6) is arranged in the second shell (5) and used for detecting the particulate matter concentration of the sampling gas; the third detection unit (6) comprises a third smoke chamber; the third smoke chamber is provided with an air inlet end for introducing sampling gas and at least two air outlet ends; the air inlet end of the third smoke chamber is communicated with the outside of the second shell (5); the air outlet end of at least one third smoke chamber is connected with a fourth detection unit (7);

the fourth detection unit (7) is arranged in the second shell (5) and is used for detecting the Ringelmann blackness of the sampled gas; the fourth detection unit (7) comprises a fourth smoke chamber; the fourth smoking chamber has an air inlet end and an air outlet end; the air inlet end of the fourth smoke chamber is communicated with the air outlet end of the third smoke chamber; the air outlet end of the fourth smoke chamber is communicated with the outside of the second shell (5);

a second exhaust unit (8) disposed within the second housing (5); the second exhaust unit (8) is provided with an air inlet end and an air outlet end; the air inlet end of the second exhaust unit (8) is communicated with the second air inlet; and the air outlet end of the second exhaust unit (8) is communicated with the inside of the third smoke chamber.

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