CN213875350U - Device for detecting concentration of particles in high-speed fluid - Google Patents
Device for detecting concentration of particles in high-speed fluid Download PDFInfo
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- CN213875350U CN213875350U CN202022409164.3U CN202022409164U CN213875350U CN 213875350 U CN213875350 U CN 213875350U CN 202022409164 U CN202022409164 U CN 202022409164U CN 213875350 U CN213875350 U CN 213875350U
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Abstract
The utility model discloses a granule concentration detection device in high-speed fluid, including setting up respectively in the leading light source and the camera of pipeline one side to and set up in the backlight of pipeline opposite side, camera and backlight symmetry set up in the both sides of pipeline, and all be located the cross section of pipeline, backlight, leading light source, camera link to each other with the industrial personal computer circuit respectively, are the detection object in the pipeline, and the detection object is located the pipeline between backlight and the camera. Through the detection device of the utility model, the particle concentration data in the high-speed fluid is obtained in a non-contact way, the original liquid is not damaged, and the real-time performance is good; the problem that the body is easily polluted or not suitable for a closed environment due to contact measurement in the prior art and the problem in a light scattering method are solved. The non-contact measurement can not introduce magazines, ensures the product quality, and has simple and efficient detection mode.
Description
Technical Field
The utility model belongs to the technical field of particle concentration detection and specifically relates to a particle concentration detection device in high-speed fluid.
Background
The particle concentration measurement has wide application in the aspects of atmospheric environment monitoring, water quality detection, oil cleanliness measurement and the like, and is suitable for various fields of industrial and agricultural production, biological medical treatment, environmental engineering and the like. At present, the methods for detecting the particle concentration mainly include a filter membrane weighing method, a chemical analysis method, a physical measurement method, a light scattering method and the like. The filter membrane weighing is to acquire the mass of dust by capturing particles on the filter membrane and comparing the mass difference before and after the particle is weighed, so as to acquire the concentration, and the method can only acquire the dust by indirect sampling and is not suitable for high-speed and high-real-time application occasions; the physical measurement method is to directly or indirectly measure the concentration through some sensor devices such as a turbidimeter, a flowmeter and the like, and has the defects of contact measurement, easy pollution to a body or inapplicability to a closed environment; the light scattering method is a method which is used more at present and is based on the light scattering theory of particles, but the method also has the defects that the measuring device is more complex, the diameter of the particles is limited, the quantitative relation between the scattered light intensity and the particle concentration is complex, and the like.
Meanwhile, in some occasions, such as the production process of polyvinyl chloride (PVC), impurities are introduced into the pipeline for loading PVC particles during feeding and discharging, and the product quality is influenced. Before feeding, the pipeline must be cleaned with clear water, and whether the cleaning reaches the standard is judged by detecting the concentration of liquid particles in the pipeline. The liquid flow rate is large in the cleaning process, the minimum required concentration can detect the content of 1ppm, and the detection difficulty is large.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a granule concentration detection device in high-speed fluid is applicable to the high velocity of flow environment, satisfies the granule concentration detection requirement simultaneously.
The utility model discloses a realize through following technical scheme:
the utility model discloses a granule concentration detection device in high-speed fluid, the device is including setting up respectively in the leading light source and the camera of pipeline one side to and set up in the backlight of pipeline opposite side, camera and backlight symmetry set up in the both sides of pipeline, and all be located the cross section of pipeline, backlight, leading light source, camera link to each other with the industrial personal computer circuit respectively, be the detection object in the pipeline, the detection object is located the pipeline between backlight and the camera.
As further improvement, leading light source and camera be located the explosion-proof section of thick bamboo of camera, the backlight is located the explosion-proof section of thick bamboo of backlight, the explosion-proof section of thick bamboo of camera passes through connecting plate leg joint dust cover and links to each other with the observation window that the pipeline was seted up through the dust cover, the explosion-proof section of thick bamboo of backlight passes through connecting plate leg joint dust cover to the observation window who establishes on through dust cover and the pipeline links to each other.
As further improvement, be equipped with waterproof circle between connecting plate support and the dust cover.
As further improvement, connecting plate support and observation window before be equipped with waterproof circle.
As further improvement, the device also comprises a four-way pipe, wherein a pair of four-way pipes are respectively connected with the backlight source explosion-proof cylinder and the camera explosion-proof cylinder, and the other pair of four-way pipes is connected with the inlet pipeline.
As further improvement, the explosion-proof section of thick bamboo of four-way pipe, backlight, the explosion-proof section of thick bamboo of camera pass through the mounting plate and connect fixedly.
As a further improvement, the camera of the present invention is a camera with a resolution of 500 ten thousand pixels or more and a frame number of several tens of thousands of frames or several hundreds of thousands of frames or several millions of frames or several tens of thousands of frames per second, and the observation window is a perspective glass.
As further improvement, the camera of the utility model is a global shutter industrial camera, and the distance from the explosion-proof cylinder to the observation window is closed.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
through the detection device of the utility model, the particle concentration data in the high-speed fluid is obtained in a non-contact way, the original liquid is not damaged, and the real-time performance is good; meanwhile, the method can analyze the content of 1PPM, 5PPM, 10PPM, 100PPM and 1000PPM, and has wide detection range; through the perspective glass and the O-shaped waterproof ring, the camera can shoot a clear image of the mixture in the four-way pipe without overflowing the mixture. The anti-explosion tube of the backlight source, the four-way pipe and the anti-explosion tube of the camera are fixed through the fastening plate, and can be directly installed in a pipeline observation area to be detected or directly replace the four-way pipe in the pipeline to be detected. The detected data is prevented from being stored in related storage equipment, automatic concentration detection and data storage can be realized, and subsequent data processing and analysis are facilitated; the dustproof cover plays a role in connection fixation and ensuring the concentricity of the device, and meanwhile, as the device is placed outdoors at ordinary times, the dustproof cover can prevent dust from entering from a gap between the explosion-proof through cylinder and the connecting plate bracket; finally, the method is not influenced by the diameter of the solid particles, and has better application to the solid particles which are not uniformly distributed.
The problem that the body is easily polluted or not suitable for a closed environment due to contact measurement in the prior art and the problem in a light scattering method are solved. The non-contact measurement can not introduce magazines, ensures the product quality, and has simple and efficient detection mode.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention in a partial cross-sectional configuration;
FIG. 2 is a schematic view of the installation structure of the device of the present invention;
FIG. 3 is a schematic view of the installation structure of the camera explosion-proof cylinder of the device of the present invention;
FIG. 4 is a schematic view of the installation structure of the anti-explosion tube of the backlight source of the device of the present invention;
FIG. 5 is a schematic view of the structure of the device of the present invention showing the direction of the fastening plate;
in the figure, 1 is a backlight explosion-proof cylinder, 2 is a camera explosion-proof cylinder, 3 is a four-way pipe, 4 is a fastening plate, 5 is a dust cover, 6 is a connecting plate bracket, 7 is an O-shaped waterproof ring, 8 is perspective glass, 9 is an explosion-proof cylinder end cover, 10 is a backlight bracket, 11 is a front light source, 12 is a front light source bracket, 13 is a camera, 14 is a camera edge connecting plate, and 15 is a backlight.
Detailed Description
Fig. 1 is a schematic structural diagram of the device of the present invention, a device for detecting concentration of particles in high-speed fluid, the device includes a front light source 11 and a camera 13 respectively disposed on one side of a pipeline, and a backlight 15 disposed on the other side of the pipeline, the camera 13 and the backlight 15 are symmetrically disposed on both sides of the pipeline, and are both located on the cross section of the pipeline, the backlight 15, the front light source 11, and the camera 13 are respectively connected to the circuits of an industrial personal computer, the pipeline is a detection object, and the detection object is located in the pipeline between the backlight 15 and the camera 13; leading light source 11 and camera 13 are located the explosion-proof section of thick bamboo 2 of camera, backlight 15 is located the explosion-proof section of thick bamboo 1 of backlight, the explosion-proof section of thick bamboo 2 of camera passes through connecting plate support 6 and connects dust cover 5, and link to each other with the observation window that the pipeline was seted up through dust cover 5, the explosion-proof section of thick bamboo 1 of backlight passes through connecting plate support 6 and connects dust cover 5, and link to each other with the observation window of establishing on the pipeline through dust cover 5, be equipped with O type waterproof ring 7 between connecting plate support 6 and the dust cover 5, connecting plate support 6 is equipped with O type waterproof ring 7 before the observation window.
The device still includes the four-way pipe 3, during the use with the pipeline corresponding end demolish and replace go up this aspect the device can, a pair of four-way pipe 3 connect the explosion-proof section of thick bamboo 1 of backlight and the explosion-proof section of thick bamboo 2 of camera, another pair of four-way pipe 3 connect into the pipeline, four-way pipe 3, the explosion-proof section of thick bamboo 1 of backlight, the explosion-proof section of thick bamboo 2 of camera connect fixedly through mounting plate 4. Fig. 5 is a schematic structural view of the fastening plate of the device of the present invention.
The utility model discloses the camera 13 that adopts is resolution ratio more than or equal to 500 ten thousand pixels, and frame number per second is several tens of thousands of frames or several hundreds of thousands of frames or several million frames or the camera 13 of several tens of thousands of frames, and the observation window is perspective glass 8, and camera 13 is global shutter industry camera 13, this section of distance of explosion-proof section of thick bamboo to observation window be sealed.
The utility model discloses the device is used for detecting granule concentration in dense high-speed fluid, including following step:
a backlight source 15 method is adopted to uniformly irradiate a light source from the back of a powder-liquid mixture of a pipeline to obtain clear solid particle size and outline, the imaging quality of a camera 13 is improved by adjusting the brightness of the backlight source 15 and a front light source 11, a high-definition high-speed industrial camera 13 clearly images particles in the pipeline, the obtained image data is sent to an industrial personal computer, the industrial personal computer applies a particle concentration detection algorithm to carry out relevant processing and analysis on the image to obtain final particle concentration data, and the data are stored.
The technical solution of the present invention is further illustrated by the following specific examples:
the industrial camera 13 is used for optically imaging solid particles in the high-speed flowing powder-liquid mixture, and the quantity and the concentration of the particles in the fluid are identified through a rear-end particle detection algorithm and the result is given. The detection device comprises a backlight source 15, a front light source 11, a camera 13 and an industrial personal computer, wherein the backlight source 15 is adopted to uniformly irradiate the light source from the back of a powder-liquid mixture to obtain the size and the outline of clear solid particles, the imaging quality of the camera 13 is improved by adjusting the brightness of the backlight source 15 and the brightness of the front light source 11, the industrial camera 13 clearly images the particles in a pipeline and sends image data to the industrial personal computer, and the industrial personal computer applies a particle concentration detection algorithm to perform relevant processing and analysis on the images to obtain final particle concentration data and store the data. The backlight 15 method is a collection method in which the camera 13, the backlight 15, and a detection target are positioned between the backlight 15 and the camera 13.
FIG. 2 is a schematic view of the installation structure of the device of the present invention; an explosion-proof section of thick bamboo end cover 9 is installed to the explosion-proof section of thick bamboo of backlight 1 one end, and the other end links to each other with dust cover 5. The other end of the dust cover 5 is connected with a connecting plate bracket 6, and an O-shaped waterproof ring 7 is clamped between the dust cover and the connecting plate bracket to prevent liquid from entering the backlight source explosion-proof cylinder 1. The connecting plate bracket 6 and the dust cover 5 are fixed on the four-way pipe 3 through screws. An observation window is arranged on the four-way pipe 3, the observation window is made of perspective glass 8, and an O-shaped waterproof ring 7 is arranged between the observation window and the connecting plate support 6, so that a camera 13 can shoot a clear image of the mixture in the four-way pipe 3, and the mixture cannot overflow. The external installation mode of one side of the camera explosion-proof cylinder 2 is the same as that of one side of the backlight explosion-proof cylinder 1. The backlight explosion-proof cylinder 1, the four-way pipe 3 and the camera explosion-proof cylinder 2 are fixed through the fastening plate 4.
Fig. 3 is a schematic view of the installation structure of the camera explosion-proof cylinder 2 of the device of the present invention; the front light source 11, the front light source bracket 12, the camera 13 and the camera edge connecting plate 14 are all placed in the camera explosion-proof barrel 2. One end of the front light source 11 support frame is connected with the front light source 11, and the other end is connected with the explosion-proof cylinder end cover 9. The camera side connecting plate 14 is fixed with the camera 13 through a screw and is fixed on the front light source bracket 12 through a screw.
Fig. 4 is a schematic view of the installation structure of the backlight explosion-proof cylinder 1 of the device of the present invention; the backlight 15 and the backlight bracket 10 are both arranged in the backlight explosion-proof cylinder 1. One end of the backlight source support 10 is connected with the backlight source 15, and the other end is connected with the explosion-proof cylinder end cover 9.
In the production process of polyvinyl chloride (PVC), impurities can be introduced into a pipeline for loading PVC particles during loading and unloading, so that the product quality is influenced. Before loading, the materials must be thoroughly cleaned by clean water under a sealed condition, so that the pollution of the products is avoided. Currently observed visually from an artificial window
Sampling is carried out to judge the particle concentration, the timeliness and the effect are not good, and the cleaning time is long and the secondary powder is much. The utility model discloses improved to present technical scheme, utilized high-speed industry camera 13 of high definition to carry out optical imaging to homogeneous powder granule in the high-speed flowing powder liquid mixture, discern fluidic PVC granule quantity, concentration and judge the cleaning result through the rear end algorithm.
The concentration of PVC powder in the pipe is monitored in real time by using a visual device consisting of a light source and a camera 13, the lens part of the camera 13 penetrates through a pipeline window to detect and photograph the conditions in the pipe under the assistance of a backlight source 15, the photographed real-time picture is transmitted back to a computer, the image processing is carried out by using software, and the result is compared with the judgment data provided by a client, so that the cleaning result is judged.
The method is designed as follows according to the actual conditions such as the working condition of the detection position, actual installation and the like; two measurements of the observation window are respectively provided with an explosion-proof cylinder, wherein one camera explosion-proof cylinder 2 is provided with a camera 13, a lens of the camera 13 and electrical components of a front light source 11; the backlight explosion-proof cylinder 1 is provided with a backlight 15.
The actual experiment detection result shows that the distance from the lens to the observation window is 2CM, and after the part is finally determined, the distance from the lens to the observation window is about 4CM and has a certain adjustable distance.
The distance from the explosion-proof cylinder to the observation window needs to be subjected to a sealing test, and if external factors such as rainwater and dust are not sealed, the final detection result is influenced. Meanwhile, the observation window glass lens needs to be cleaned regularly (3-6 months) according to the actual condition, and the detection result is guaranteed not to be influenced by external factors.
What has been described above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the core technical features of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The device for detecting the concentration of particles in high-speed fluid is characterized by comprising a front light source (11) and a camera (13) which are respectively arranged on one side of a pipeline and a backlight source (15) which is arranged on the other side of the pipeline, wherein the camera (13) and the backlight source (15) are symmetrically arranged on two sides of the pipeline and are respectively positioned on the cross section of the pipeline, the backlight source (15), the front light source (11) and the camera (13) are respectively connected with an industrial personal computer circuit, a detection object is arranged in the pipeline and is positioned in the pipeline between the backlight source (15) and the camera (13), the front light source (11) and the camera (13) are positioned in a camera explosion-proof cylinder (2), the backlight source (15) is positioned in a backlight explosion-proof cylinder (1), and the camera explosion-proof cylinder (2) is connected with a dust cover (5) through a connecting plate bracket (6), and the dust cover (5) is connected with the observation window arranged on the pipeline, and the backlight source explosion-proof cylinder (1) is connected with the dust cover (5) through the connecting plate bracket (6) and is connected with the observation window arranged on the pipeline through the dust cover (5).
2. The apparatus for detecting concentration of particles in high-speed fluid according to claim 1, wherein a waterproof ring is provided between the connection plate bracket (6) and the dust cover (5).
3. The apparatus for detecting concentration of particles in high-speed fluid according to claim 2, wherein a waterproof ring is arranged in front of the connecting plate bracket (6) and the observation window.
4. The device for detecting the concentration of particles in high-speed fluid according to claim 1, 2 or 3, wherein the device further comprises four-way pipes (3), one pair of four-way pipes (3) are respectively connected with the backlight explosion-proof cylinder (1) and the camera explosion-proof cylinder (2), and the other pair of four-way pipes (3) are connected with the inlet pipeline.
5. The device for detecting the concentration of particles in high-speed fluid according to claim 4, wherein the four-way pipe (3), the backlight explosion-proof cylinder (1) and the camera explosion-proof cylinder (2) are fixedly connected through a fastening plate (4).
6. The apparatus for detecting concentration of particles in high-speed fluid according to claim 1, wherein the camera (13) has a resolution of 500 ten thousand pixels or more and a number of frames per second of several tens or hundreds of thousands or millions or tens of thousands of frames, and the observation window is a see-through glass (8).
7. A high-speed fluid particle concentration detection apparatus as claimed in claim 1, wherein said camera (13) is a global shutter industrial camera (13), and the distance from said camera explosion-proof cylinder (2) to said observation window is closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022409164.3U CN213875350U (en) | 2020-10-26 | 2020-10-26 | Device for detecting concentration of particles in high-speed fluid |
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| CN202022409164.3U CN213875350U (en) | 2020-10-26 | 2020-10-26 | Device for detecting concentration of particles in high-speed fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147047A (en) * | 2020-10-26 | 2020-12-29 | 浙江四点灵机器人股份有限公司 | Device and method for detecting concentration of particles in high-speed fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147047A (en) * | 2020-10-26 | 2020-12-29 | 浙江四点灵机器人股份有限公司 | Device and method for detecting concentration of particles in high-speed fluid |
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