CN216284786U - Density and concentration detection device - Google Patents
Density and concentration detection device Download PDFInfo
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- CN216284786U CN216284786U CN202122046982.6U CN202122046982U CN216284786U CN 216284786 U CN216284786 U CN 216284786U CN 202122046982 U CN202122046982 U CN 202122046982U CN 216284786 U CN216284786 U CN 216284786U
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Abstract
The utility model provides a density and concentration detection device, which comprises a pipeline to be detected; the source tank is fixedly arranged in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline to be detected is positioned through a first vertical rod and is used for storing a radiation source; and the detector is fixedly arranged in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline to be detected is positioned through a second vertical rod, is symmetrical with the source tank by using the geometric center of the pipeline to be detected, and is used for identifying the intensity of the interference rays of the radiation source in the source tank. Through the mounted position of adjustment source jar radiation source and detector, strengthened the intensity of the ray that the detector received, simultaneously reduced the distance between radiation source and the detector greatly, reduced the thickness that the ray passed the medium, reduced the decay of ray to make the intensity of the ray that the detector received become strong, be different from prior art's defect and realize the density concentration measurement of big pipe diameter pipeline.
Description
Technical Field
The utility model relates to the technical field of dense density measurement of large-diameter pipelines, in particular to a density and concentration detection device.
Background
In the prior art, when concentration and density of a large-diameter pipeline are measured, a mode that rays emitted by Na-22 penetrate through the center of the pipeline and then reach a detector is adopted.
This results in the greatest distance traversed due to the radial direction of the radiation, and the greatest thickness of the medium being measured through the pipe.
According to the working principle of the radiation density meter/densitometer, when the strength of Na-22 is determined, the distance d and the density ρ determine the magnitude of the signal strength received by the detector, and the signal strength is inversely proportional to the square of the distance d. Therefore, when the existing installation mode is adopted to measure a large-diameter pipeline with the diameter exceeding 500mm, the ray signal received by the detector is very weak, so that the peripheral system cannot realize the measurement of the density/concentration of the pipeline to be measured.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a density and concentration detection device to solve the problems in the background technology.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a density, concentration detection apparatus comprising:
a pipeline to be tested;
the source tank is fixedly arranged in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline to be detected is positioned through a first vertical rod and is used for storing a radiation source;
and the detector is fixedly installed in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline to be detected is located through a second vertical rod, is symmetrical to the source tank with the geometric center of the pipeline to be detected, and is used for identifying the intensity of the interference rays of the radiation source in the source tank.
The density and concentration detection device comprises a plurality of fixed screw rods, wherein one end part of at least one fixed screw rod is connected to a first vertical rod, and the other end part of the fixed screw rod is fixedly connected to a second vertical rod and used for forming an annular clamping area on the outer edge surface of the pipeline to be detected so as to fix the source tank and the detector.
The density and concentration detection device further comprises a lead stop block, wherein the lead stop block is arranged in a region where ray radiation is carried out on the detector along a radiation source of the source tank, one end of the lead stop block is connected with the fixed screw rod, and the other end of the lead stop block is tightly attached to a pipeline to be detected so as to block radiation caused by atmosphere atoms in the external atmosphere.
As an improvement of the density and concentration detection device, a push rod is arranged in the source tank, penetrates through the source tank and is used for adjusting the emission position of a radiation source of the source tank.
As an improvement of the density and concentration detection device, the detector is externally connected with a transmitter and used for processing and visualizing the identification signal output by the detector.
In a possible implementation manner of the density and concentration detection device provided by the utility model, the pipeline to be detected is a DN500 x 8mm pipeline, and the linear distance between the installation position of the detector and the installation position of the source tank radiation source is 300 mm-550 mm.
As an improvement of the density and concentration detection device, the radiation source stored in the source tank is a Na-22 emission source which is used as a positron emitter and emits gamma rays.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model enhances the intensity of rays received by the detector by adjusting the mounting positions of the source tank radiation radioactive source and the detector, simultaneously greatly reduces the distance between the radioactive source and the detector, reduces the thickness of rays penetrating through a medium, and reduces the attenuation of the rays, thereby strengthening the intensity of the rays received by the detector, and realizing the density measurement of the large-diameter pipeline by being different from the defects of the prior art.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the utility model, for which like reference numerals are used to indicate like parts. Wherein:
fig. 1 is a schematic view of an implementation scenario of an overall structure of a density and concentration detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a working principle of the density and concentration detection apparatus for measuring the density and concentration of the pipeline to be measured according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the working principle and the installation structure of the conventional apparatus for measuring the concentration and density of the pipe to be measured according to an embodiment of the present invention.
In the figure:
1-a pipeline to be detected, 2-a source tank, 3-a first vertical rod, 4-a second vertical rod, 5-a fixed screw rod, 6-a push rod, 7-Na-22 emission source, 8-a lead stop block, 9-a detector and 10-a handheld transmitter.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
As shown in fig. 1, as an embodiment of the present invention, the present invention provides a technical solution: a density and concentration detection device comprises
The pipeline to be tested 1 is selected from pipelines with the model number DN500 x 8mm, and the straight line distance between the installation position of the pipeline to be tested 1 relative to the detector 9 and the installation position of the pipeline to be tested relative to the radiation source of the source tank 2 is set to be 300 mm-550 mm;
the source tank 2 is fixedly arranged in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline 1 to be detected is located through a first vertical rod 3 and is used for storing a radiation source, wherein the radiation source stored in the source tank 2 is an Na-22 emission source 7 and is used as a positron emitter to emit gamma rays;
the detector 9 is fixedly installed in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline 1 to be detected is located through the second vertical rod 4, is symmetrical to the source tank 2 with the geometric center of the pipeline 1 to be detected, and is used for identifying the intensity of the interfering rays of the radiation source in the source tank 2, and during specific implementation, the source tank 2 and the detector 9 can be located on the same horizontal line.
In an embodiment of the utility model, still include plural fixed screw 5, wherein, 5 a tip of at least one fixed screw are connected in first montant 3, another tip fixed connection in second montant 4, be used for forming an annular clamping area at the 1 outer fringe face of pipeline that awaits measuring, fix source tank 2 and detector 9, it can be understood that fixed screw 5 can respectively with first montant 3 and 4 swing joint of second montant, in order to make things convenient for the staff to adjust source tank 2 and detector 9 for the position of pipeline 1 that awaits measuring.
The technical concept is that the radiation detector further comprises a lead block 8, wherein the lead block 8 is arranged in a region where ray radiation is carried out on the detector 9 along a radiation source of the source tank 2, one end part of the lead block 8 is connected with the fixed screw rod 5, and the other end part of the lead block is tightly attached to the pipeline 1 to be detected so as to block radiation caused by atmosphere atoms in the external atmosphere.
In an embodiment of the utility model, a push rod 6 is arranged in the source tank 2, and the push rod 6 penetrates through the source tank 2 and is used for adjusting the radiation source emitting position of the source tank 2.
As shown in fig. 2, which shows the operating principle of the density and density detection device for measuring the density and density of the pipe 1 to be measured, it should be noted that the detector 9 is externally connected with a transmitter 10 for processing the identification signal output by the detector 9 and visualizing the identification signal, and it can be understood that the γ -ray generated by the Na-22 emission source 7 has the ability to penetrate a substance, and after passing through a measured medium (pipe 1 to be measured) with a distance d and a density ρ for a bundle of collimated γ -ray, the intensity I of the γ -ray incident on the detector 9 is exponential to the intensity when ρ is 0:
I＝I0 -цm*ρ*d， (1)
mu in the form ofmIs a mass absorption coefficient of mumIs a constant determined by the type of radioactive source and the composition of the medium, so that the density rho of the measured medium is obtained,
Referring to fig. 3, which illustrates the operation principle and installation structure of the prior art device for measuring the concentration and density of the pipe 1 to be measured, it can be understood that, in the prior art, the radiation emitted from the Na-22 emission source 7 passes through the center of the pipe and then reaches the detector 9, since the radiation passes through the diameter direction, the distance that the radiation passes through is the largest, and the thickness of the medium to be measured in the pipe is also the largest, and according to the operation principle of the radiation densitometer/densimeter, after the strength of the Na-22 emission source 7 is determined, the distance d and the density ρ determine the magnitude of the signal strength that the detector 9 can receive, and the signal strength is inversely proportional to the square of the distance d, therefore, the present invention enhances the strength of the radiation at the detector 9 and greatly reduces the distance between the radiation source and the detector 9 by adjusting the installation positions of the radiation source tank 2 and the detector 9, the thickness that the ray passed through the medium has been reduced, reduces the decay of ray to make the ray intensity that detector 9 received become strong, be different from prior art's defect and realize the density concentration measurement of big pipe diameter pipeline, make the thickness that passes the interior medium of the pipeline 1 that awaits measuring reduce to 310mm by 500 mm.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.
Claims (7)
1. A density, concentration detection device characterized in that: comprises that
A pipeline to be tested;
the source tank is fixedly arranged in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline to be detected is positioned through a first vertical rod and is used for storing a radiation source;
and the detector is fixedly installed in the direction of a straight line where a tangent line or a non-diameter chord of the cross section of the pipeline to be detected is located through a second vertical rod, is symmetrical to the source tank with the geometric center of the pipeline to be detected, and is used for identifying the intensity of the interference rays of the radiation source in the source tank.
2. A density, concentration detection apparatus according to claim 1, wherein: the device is characterized by further comprising a plurality of fixing screw rods, wherein one end part of at least one fixing screw rod is connected to the first vertical rod, the other end part of the fixing screw rod is fixedly connected to the second vertical rod, and the fixing screw rods are used for forming an annular clamping area on the outer edge surface of the pipeline to be detected so as to fix the source tank and the detector.
3. A density concentration detecting apparatus according to claim 1 or 2, wherein: still include the lead dog, the lead dog sets up in carrying out the region of ray radiation to the detector along the radiation source of source jar, wherein, a lead dog tip is connected with fixed screw, and another tip is close to be laminated in the pipeline that awaits measuring to block the radiation that atmosphere atom caused in the outside atmosphere.
4. A density, concentration detection apparatus according to claim 1, wherein: the source tank is internally provided with a push rod which penetrates through the source tank and is used for adjusting the emission position of a radiation source of the source tank.
5. A density, concentration detection apparatus according to claim 1, wherein: the detector is externally connected with a transmitter and used for processing the identification signal output by the detector and visualizing the identification signal.
6. A density, concentration detection apparatus according to claim 1, wherein: the pipeline to be detected is DN500 x 8mm pipeline, and the straight line distance between the installation position of the detector and the installation position of the source tank radiation source is 300 mm-550 mm.
7. A density, concentration detection apparatus according to claim 1, wherein: the radiation source stored in the source tank is a Na-22 emission source and is used as a positron emitter to emit gamma rays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122046982.6U CN216284786U (en) | 2021-08-27 | 2021-08-27 | Density and concentration detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122046982.6U CN216284786U (en) | 2021-08-27 | 2021-08-27 | Density and concentration detection device |
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| Publication Number | Publication Date |
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| CN216284786U true CN216284786U (en) | 2022-04-12 |
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| CN202122046982.6U Active CN216284786U (en) | 2021-08-27 | 2021-08-27 | Density and concentration detection device |
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| CN (1) | CN216284786U (en) |
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2021
- 2021-08-27 CN CN202122046982.6U patent/CN216284786U/en active Active
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