CN212008214U - Radon diffusion coefficient measuring device - Google Patents
Radon diffusion coefficient measuring device Download PDFInfo
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- CN212008214U CN212008214U CN202020849857.1U CN202020849857U CN212008214U CN 212008214 U CN212008214 U CN 212008214U CN 202020849857 U CN202020849857 U CN 202020849857U CN 212008214 U CN212008214 U CN 212008214U
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Abstract
The application discloses measuring device of radon diffusion coefficient, this measuring device can utilize the fixed coating that awaits measuring of dope layer module, make inside and collection radon cover of radon source container shell communicate through the dope layer that awaits measuring with collection radon cover inside, let the radon gas of radon source test piece release permeate through the dope layer that awaits measuring and spread to collection radon cover in, utilize the emanometer to measure the radon gas concentration in the collection radon cover through airtight cavity method, calculate the radon diffusion coefficient that obtains the coating that awaits measuring in view of the above, the measurement of the radon prevention performance to the coating that awaits measuring has been realized. In addition, the heating plate and the heat insulation plate are arranged on the inner side of the radon source container shell, so that on one hand, the constant temperature in the radon source container shell can be ensured, and the interference of temperature change on a measurement result is avoided; on the other hand, the influence of the temperature on the diffusion coefficient of the radon or the radon releasing speed of the radon source test piece can be detected by adjusting the temperature in the housing of the radon source container. Finally, the thickness of the coating layer to be measured in the coating layer module can be changed, so that the influence of the coating thickness on the measurement result is detected.
Description
Technical Field
The application relates to the technical field of gas concentration measurement, in particular to a radon diffusion coefficient measuring device.
Background
In life, the main natural radioactive sources harmful to human health are radon and radon daughters. Radon has great threat to human health, strong carcinogenicity and wide pollution sources, such as soil, rock mass, underground water, building materials and the like, wherein the main sources closely related to human life are radon released by indoor walls, foundations, building materials and the like.
At present, fly ash is widely used as a building material at home and abroad, and is closely related to daily life of people, but raw coal contains various natural radionuclides such as 226Ra, 230Th, 40K, 238U and the like, and the fly ash has an enrichment effect on the radionuclides in coal, so that most building materials have potential radon pollution.
Therefore, the radiation protection of radon is highly valued by governments of various countries, and a plurality of scientific research institutions and scholars at home and abroad develop the investigation of environmental radon and the systematic research of precipitation mechanism. Research shows that radon released by natural radon sources such as indoor walls, infrastructure materials and the like has the characteristics of low concentration, high harm, long-term property and the like, and causes internal irradiation to human bodies to generate long-term harmfulness, so that research on development of radon-proof paint and detection research on radon-proof performance are urgent.
In summary, how to provide a device for detecting radon-proof performance of radon-proof paint is an urgent need to solve the problem for those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a measuring device of radon diffusion coefficient for solve because lack at present and carry out the device that the performance detected to preventing radon coating, lead to the problem that the testing process is difficult to expand.
In order to solve the above technical problem, the present application provides a radon diffusion coefficient measuring device, including:
the radon source container shell is used for storing a radon source test piece and is provided with an opening;
the heat insulation plate is arranged on the inner side of the radon source container shell;
the heating plate is arranged on the inner side of the heat insulation plate;
the coating layer module is hermetically connected with the opening of the radon source container shell and is provided with a hollow structure, and the hollow structure is used for fixing a coating to be detected;
the radon collecting cover is hermetically connected with the coating layer module;
a radon gas input pipe and a radon gas output pipe which are arranged on the radon collection cover;
and the radon measuring instrument is connected with the radon gas input pipe and the radon gas output pipe.
Preferably, the method further comprises the following steps:
and the drier is connected with the radon measuring instrument at one end and the radon measuring instrument at the other end, and the radon input pipe is connected with the radon measuring instrument through the drier.
Preferably, the radon measuring instrument is a RAD-7 radon measuring instrument.
Preferably, the shape of the hollow structure of the coating layer module is the same as the shape of the opening of the radon source container shell.
Preferably, the coating layer module is an annular coating layer standard ring.
Preferably, the method comprises the following steps:
a plurality of paint layer modules of different thicknesses.
Preferably, the method further comprises the following steps:
fixing screws, airtight pads and fixing bolts; the fixing screw, the airtight pad and the fixing bolt are used for achieving sealing connection between the radon source container shell and the coating layer module and achieving sealing connection between the coating layer module and the radon collecting cover.
Preferably, the radon source container housing is provided with a first opening and a second opening; correspondingly, the radon diffusion coefficient measuring device comprises:
the first coating layer module and the second coating layer module are hermetically connected with the first opening and the second opening of the radon source container shell, and are provided with hollow structures which are used for fixing a coating to be measured;
the first radon collection cover is hermetically connected with the first coating layer module, and the second radon collection cover is hermetically connected with the second coating layer module;
the first radon gas input pipe and the first radon gas output pipe are arranged on the first radon collecting cover, and the second radon gas input pipe and the second radon gas output pipe are arranged on the second radon collecting cover;
the first radon measuring instrument is connected with the first radon gas input pipe and the first radon gas output pipe, and the second radon measuring instrument is connected with the second radon gas input pipe and the second radon gas output pipe.
Preferably, the first opening and the second opening of the radon source container housing are oppositely disposed.
The device for measuring the diffusion coefficient of radon comprises a radon source container shell, a coating layer module, a radon collecting cover and a radon measuring instrument, wherein the coating layer module is hermetically connected with an opening of the radon source container shell, and the coating layer module is hermetically connected with the radon collecting cover; the inner side of the radon source container shell is sequentially provided with a heat insulation plate and a heating plate, and the radon source container shell is used for storing a radon source test piece; the coating layer module is provided with a hollow structure, and the hollow structure is used for fixing the coating to be detected; the radon collecting cover is communicated with the radon measuring instrument through a radon gas input pipe and a radon gas output pipe.
It can be seen that the measuring device of this application can utilize the fixed coating that awaits measuring of dope layer module for inside and the collection radon cover of radon source container shell are through the dope layer intercommunication that awaits measuring, let the radon gas of radon source test piece release permeate through the dope layer that awaits measuring and spread to collection radon cover in, utilize the emanometer to measure the radon gas concentration in the collection radon cover through airtight cavity method, calculate the radon diffusion coefficient that obtains the coating that awaits measuring in view of the above, the measurement of the radon performance of preventing of the coating that awaits measuring has been realized. In addition, the heating plate and the heat insulation plate are arranged on the inner side of the radon source container shell, so that on one hand, the constant temperature in the radon source container shell can be ensured, and the interference of temperature change on a measurement result is avoided; on the other hand, the influence of the temperature on the diffusion coefficient of the radon or the radon releasing speed of the radon source test piece can be detected by adjusting the temperature in the housing of the radon source container. Finally, the thickness of the coating layer to be measured in the coating layer module can be changed, so that the influence of the coating thickness on the measurement result is detected.
Drawings
For a clearer explanation of the embodiments or technical solutions of the prior art of the present application, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a radon diffusion coefficient measuring apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a radon diffusion coefficient measuring device provided in the present application;
FIG. 3 is a schematic view of a radon source container housing in a second embodiment of a radon diffusion coefficient measuring apparatus provided by the present application;
FIG. 4 is a schematic diagram of a standard ring of a coating layer in an embodiment of a radon diffusion coefficient measuring apparatus provided by the present application;
fig. 5 is a schematic diagram of a radon collecting cover, a standard ring of a coating layer, and a housing of a radon source container in a second embodiment of the radon diffusion coefficient measuring apparatus provided by the present application.
Detailed Description
The core of the application is to provide a measuring device for the radon diffusion coefficient, which can measure the radon concentration value by a closed cavity method, thereby calculating the radon diffusion coefficient of the coating to be measured and realizing the measurement of the radon prevention performance of the coating to be measured.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The first embodiment of the radon diffusion coefficient measuring device provided by the present application is described below, and referring to fig. 1, the first embodiment includes:
the radon source container shell 01 is used for storing a radon source test piece 00, and an opening is formed in the radon source container shell 01;
the heat insulation plate 02 is arranged on the inner side of the radon source container shell 01;
a heating plate 03 disposed inside the heat insulating plate 02;
the coating layer module 04 is connected with the opening of the radon source container shell 01 in a sealing mode, and the coating layer module 04 is provided with a hollow structure which is used for fixing the coating 05 to be measured;
a radon collection cover 06 hermetically connected with the coating layer module 04;
a radon gas input pipe 07 and a radon gas output pipe 08 which are arranged on the radon collection cover 06;
and the radon measuring instrument 09 is connected with the radon gas input pipe 07 and the radon gas output pipe 08.
The correspondence between the reference numerals in fig. 1 and the parts of the measuring apparatus of the present embodiment is shown in table 1:
TABLE 1
| Reference numerals | Refers to |
| 00 | Radon |
| 01 | Radon source container shell |
| 02 | |
| 03 | |
| 04 | |
| 05 | Coating to be tested |
| 06 | |
| 07 | Radon |
| 08 | Radon |
| 09 | Radon measuring instrument |
In this embodiment, the radon source test piece 00 refers to a solid radon source, and is stored inside the radon source container housing during the measurement process. Specifically, in order to avoid collision of the radon source test piece 00 in the radon source container shell 01, the radon source test piece 00 matched with the radon source container shell 01 in shape can be selected, so that the radon source container shell 01 plays a role in fixing the radon source test piece 00.
The inner side of the radon source container shell 01 is provided with the heat insulation plate 02, and the heat insulation plate 02 is directly contacted with the inner side of the radon source container shell 01, so that heat insulation and sealing effects are achieved, and it is ensured that all radon gas released by the radon source test piece 00 is separated out to the radon collection chamber of the radon collection cover 06. As for the material selected for the heat insulating plate 02, an elastic material can be specifically used.
The inboard of heat-insulating shield 02 is provided with hot plate 03, specifically can select for use the cylindrical hot plate of elasticity silicon rubber, plays the constant temperature heating effect. The heating plate 03 is in direct contact with the radon source test piece 00 on one hand and the heat insulation plate 02 on the other hand. In the measuring process, the temperature of the heating plate 03 can be controlled by an external temperature control system, so that the temperature of the radon source test piece 00 is ensured to be constant, and the influence of temperature change on the radon diffusion coefficient is eliminated; on the other hand, the radon-proof performance of the paint 05 to be measured under different temperature gradients can be measured by taking the temperature as a variable.
In this embodiment, the heating plate 03 and the heat insulating plate 02 are both made of elastic materials, so that the temperature of the environment where the radon source test piece 00 is located is always constant in the measurement process, and errors caused by external environment changes in the measurement process to the measurement result are eliminated.
The coating layer module 04 is arranged between the radon collection cover 06 and the radon source container shell 01 and is used for fixing the coating 05 to be measured. As a preferred embodiment, the measuring device of this embodiment may include paint layer modules 04 with different thicknesses, and each paint layer module 04 is used to fix a paint layer to be measured with a corresponding thickness. In the measurement process, the coating layer module 04 not only plays a role in fixing the coating 05 to be measured, but also can calibrate the thickness of the coating 05 to be measured smeared inside the coating layer module 04. In practical application, the coating layer module 04 with the target thickness can be selected according to actual requirements, so that the purpose of controlling the thickness of the coating 05 to be measured is achieved. On the basis, the influence of the thickness of the paint 05 to be detected on the radon diffusion coefficient can be detected by taking the thickness of the paint 05 to be detected as a variable.
In addition, in order to ensure that the radon gas inside the radon source container shell 01 enters the radon collecting cover through the paint layer to be detected, as a preferred embodiment, the shape of the hollow structure in the paint layer module 04 for fixing the paint 05 to be detected is set to be the shape of the opening of the radon source container shell 01. Further, the shape of the opening of the side of the radon collection cover 06 facing the paint layer module 04 may be set to the shape of the hollow structure of the paint layer module 04.
In this embodiment, sealing connection between radon collection cover 06 and coating layer module 04, sealing connection between coating layer module 04 and radon source container shell 01 to ensure that radon gas that radon source test piece 00 released permeates the coating layer that awaits measuring and spreads to in the radon collection cover, avoid external environment to disturb. As a specific embodiment, the sealing connection between the radon collection cover 06 and the paint layer module 04 can be realized by fixing screws, airtight pads and fixing bolts, and the sealing connection between the paint layer module 04 and the radon source container shell 01 can be realized at the same time.
The radon collecting cover 06 and the radon measuring instrument 09 of the embodiment are communicated through a radon gas input pipe 07 and a radon gas output pipe 08. The shape of the radon gas input tube 07 is matched with the shape of a gas inlet of the radon measuring instrument 09 on one hand and is matched with the shape of a sampling port reserved in the radon collecting cover 06 on the other hand; correspondingly, the shape of the radon gas output pipe 08 is matched with the shape of the gas outlet of the emanometer 09 on one hand and the shape of the sampling port reserved in the radon collection cover 06 on the other hand, so that the airtightness between the radon gas input pipe 07 and the emanometer 09 and the radon collection cover 06 is ensured, and the airtightness between the radon gas output pipe 08 and the emanometer 09 and the radon collection cover 06 is ensured. As for the material selection of the radon gas input tube 07 and the radon gas output tube 08, a rubber gas guide tube can be selected.
In this embodiment, the radon meter 09 is used to measure the content of radon and radon daughter in a unit volume, i.e., the radon concentration. For some environments to be measured with low radon concentration, if the radon collecting space is too large, the measurement error of the radon measuring instrument can be greatly reduced, and as a preferred implementation mode, the radon collecting cover 06 with a smaller radon collecting chamber is selected in the embodiment to reduce the error.
After the radon gas concentration inside the radon collection cover 06 is measured by the radon measuring instrument 09, the radon diffusion coefficient of the paint to be measured can be obtained according to a corresponding calculation method, and the description is not repeated here.
The embodiment provides a measuring device of radon diffusion coefficient, can utilize the fixed coating that awaits measuring of dope layer module, make inside and the collection radon cover of radon source container shell communicate through the dope layer that awaits measuring, let the radon gas of radon source test piece release permeate through the dope layer that awaits measuring and spread to collection radon cover, utilize the emanometer to measure the radon gas concentration in the collection radon cover through airtight cavity method, calculate the radon diffusion coefficient that obtains the coating that awaits measuring in view of the above, the measurement of the radon performance of preventing of the coating that awaits measuring has been realized. In addition, the heating plate and the heat insulation plate are arranged on the inner side of the radon source container shell, so that on one hand, the constant temperature in the radon source container shell can be ensured, and the interference of temperature change on a measurement result is avoided; on the other hand, the influence of the temperature on the diffusion coefficient of the radon or the radon releasing speed of the radon source test piece can be detected by adjusting the temperature in the housing of the radon source container. Finally, the thickness of the coating layer to be measured in the coating layer module can be changed, so that the influence of the coating thickness on the measurement result is detected.
The second embodiment of the radon diffusion coefficient measuring device provided by the present application is described in detail below, and the second embodiment is implemented based on the first embodiment and is expanded to a certain extent based on the first embodiment.
Specifically, in order to improve the measurement efficiency, the radon source container shell can be provided with a plurality of openings, each opening is correspondingly provided with a coating layer module, a radon collecting cover, a radon gas input pipe, a radon gas output pipe, a radon measuring instrument and the like, and the second embodiment takes the radon source container shell provided with two openings as an example for explanation. In addition, in order to guarantee the even release of radon gas, cylindrical radon source test piece is chooseed for use to embodiment two, and correspondingly, radon source container shell wholly is hollow cylinder, and the dope layer module chooses for use to be annular dope layer standard ring. Moreover, in order to ensure that radon gas enters the radon collecting cover through the coating layer to be detected, the shape of the hollow structure of the coating layer in the embodiment is the same as the shape of the opening of the radon source container. Finally, in order to ensure the accuracy of the radon gas concentration measurement result and simultaneously avoid the damage of water vapor to the radon measuring instrument, a dryer is arranged between the radon gas input pipe and the radon measuring instrument in the second embodiment.
Referring to fig. 2, the second embodiment specifically includes:
a radon source container housing 5 for storing a radon source test piece, the radon source container housing 5 having a first opening and a second opening;
an insulation board 12 arranged at the inner side of the radon source container shell 5;
a heating plate 11 disposed inside the heat insulating plate 12;
a first coating layer standard ring 41 and a second coating layer standard ring 42 which are hermetically connected with the first opening and the second opening of the radon source container shell 5;
a first radon collection cover 21 hermetically connected to the first paint layer standard ring 41, and a second radon collection cover 22 hermetically connected to the second paint layer standard ring 42;
a first radon gas input pipe 71 and a first radon gas output pipe 72 which are arranged on the first radon collection cover 21, and a second radon gas input pipe 73 and a second radon gas output pipe 74 which are arranged on the second radon collection cover 22;
a first radon measuring instrument 91 connected with the first radon gas input pipe 71 and the first radon gas output pipe 72, and a second radon measuring instrument 92 connected with the second radon gas input pipe 73 and the second radon gas output pipe 74;
a first drier 81 with one end connected with the first radon gas input pipe 71 and the other end connected with the first radon measuring instrument 91, and a second drier 82 with one end connected with the second radon gas input pipe 73 and the other end connected with the second radon measuring instrument 92;
fixing screw 1, gas seal pad 3, fixing bolt 6.
The correspondence between the reference numerals in fig. 2 and the parts of the measuring apparatus of the present embodiment is shown in table 2:
TABLE 2
Specifically, the shape of the first opening of the radon source container housing 5 in this embodiment is the same as the shape of the second opening. In addition, as a preferred embodiment, the first opening and the second opening of the radon source container housing 5 in this embodiment are oppositely disposed. A specific radon source container housing 5 is shown in figure 3.
The first paint layer standard ring 41 and the second paint layer standard ring 42 in this embodiment have hollow inner rings for fixing the paint 13 to be measured. In this embodiment, the shape of the hollow inner ring of the first paint layer standard ring 41 is the same as the shape of the first opening of the radon source container housing 5, and the shape of the hollow inner ring of the second paint layer standard ring 42 is the same as the shape of the second opening of the radon source container housing 5. Accordingly, the shape of the opening of the first radon collection cover 21 is the same as the shape of the hollow inner ring of the first paint layer standard ring 41, and the shape of the opening of the second radon collection cover 22 is the same as the shape of the hollow inner ring of the second paint layer standard ring 42.
As a specific embodiment, the present embodiment adopts a cylindrical standard specimen with a diameter of 50mm and a height of 100mm as the radon source specimen 14. The specific paint layer standard ring is shown in fig. 4.
The thickness of the direct contact part of the radon source container shell 5 and the heat insulation plate 12 is 5mm, the radon source container shell plays a role in fixing the radon source test piece 14, and the radon source container shell is ensured to be connected with the first radon collecting cover 21 and the second radon collecting cover 22 in a sealing mode.
The thickness of the heat insulation plate 12 is set to be 2mm, and the heat insulation plate is made of elastic materials, so that heat insulation and sealing effects are achieved, and radon on the surfaces of the two ends of the radon source test piece 14 is enabled to be completely separated out into the radon collecting chambers 10 of the first radon collecting cover 21 and the second radon collecting cover 22 on the two sides.
The heating plate 11 is a customized elastic silicon rubber cylindrical heating plate with the thickness of 3mm, a constant-temperature heating effect is achieved, the heating plate 11 is directly contacted with the radon source test piece 14, the temperature of the radon source test piece is controlled through an external temperature control system, on one hand, the temperature of the radon source test piece 14 is guaranteed to be constant, and the influence of temperature change on the radon diffusion coefficient is eliminated; and on the other hand, measuring the radon prevention performance of the paint 13 to be measured under different temperature gradients.
The heating plate 11 and the heat insulation plate 12 are made of elastic materials, so that the temperature of the environment where the radon source test piece 14 is located can be guaranteed to be constant all the time in the measuring process, errors caused by external environment changes in the measuring process to an experimental result are eliminated, single-surface separation of radon from the surface of the radon source test piece 14 is guaranteed, and the accuracy of the measuring result is improved.
A first paint layer standard ring 41 is placed between the first radon collection shield 21 and the radon source container housing 5 and a second paint layer standard ring 42 is placed between the second radon collection shield 22 and the radon source container housing 5. The paint layer standard ring inner diameter can be set to 50 mm. The coating layer standard ring is used for fixing the coating 13 to be measured and calibrating the thickness of the coating 13 to be measured smeared in the sample ring. The measuring device of this embodiment includes a plurality of dope layer standard rings of different thickness, and as a specific implementation, the thickness can be 4mm, 6mm, 8mm respectively. In practical application, the thickness of the coating layer standard ring can be adjusted as required to control the thickness of the coating 13 to be detected, and the radon-proof efficiency and the radon diffusion coefficient of the coating 13 to be detected with any thickness can be detected by changing the thickness of the coating layer standard ring.
As a specific implementation manner, in the present embodiment, RAD-7 radon measuring instruments are used as the first radon measuring instrument 91 and the second radon measuring instrument 92. The principle of the radon measuring instrument is to measure the content of radon and radon daughter in unit volume, namely the radon concentration, and for some environments to be measured with low radon concentration, if the radon collecting space is too large, the measurement error of the radon measuring instrument can be greatly reduced, and in order to reduce the error, the radon collecting cover (comprising the first radon collecting cover 21 and the second radon collecting cover 22) of the embodiment adopts a small-scale space with the inner diameter of 50mm and the height of 30 mm.
This embodiment has set up two collection radon spaces, including first collection radon cover 21 and second collection radon cover 22, and its effect has two: firstly, simultaneously measuring two different thicknesses of the same kind of paint to be measured at two ends, and measuring the basically stable radon concentration in radon collecting covers at two ends so as to deduce the radon diffusion coefficient of the paint to be measured 13; and secondly, multiple coatings can be measured simultaneously, so that the measurement efficiency is improved, and the measurement progress is accelerated.
Two sampling ports 15 are reserved on the side surfaces of the first radon collecting cover 21 and the second radon collecting cover 22, and the diameter of each sampling port is 8 mm. One sampling port of the first radon collection cover 21 is hermetically connected with a first radon gas input pipe 71, and the other sampling port is hermetically connected with a first radon gas output pipe 72; one sampling port of the second radon collection cover 22 is connected with a second radon gas input pipe 73 in a sealing way, and the other sampling port is connected with a second radon gas output pipe 74 in a sealing way.
For convenience of description, the first radon gas input tube 71, the first radon gas output tube 72, the second radon gas input tube 73 and the second radon gas output tube 74 are collectively referred to as a radon gas collection tube hereinafter, the radon gas collection tube is mainly set according to the size of the air inlet or the air outlet of the radon measuring instrument, specifically, a rubber gas guide tube is selected, and the diameter of the rubber gas guide tube is set to be slightly smaller than 8mm, so that the airtightness of the gas guide tube when the gas guide tube is inserted into the sampling port 15 is ensured.
This embodiment is provided with the desicator, and the desicator mainly used is dry the radon (gaseous) that will get into in the emanometer through radon gas collection pipe, reduces the damage to the emanometer, guarantees measuring result's accuracy simultaneously. Specifically, as shown in fig. 2, the first radon gas input pipe 71 of the present embodiment is connected to the first radon measuring instrument 91 through the first drier 81, and the second radon gas input pipe 73 is connected to the second radon measuring instrument 92 through the second drier 82.
This device adopts airtight cavity method to measure the radon concentration that the radon permeates the coating 13 that awaits measuring and spreads to in collection radon cover, for the gas tightness that ensures collection radon device, adopts set screw 1 and airtight pad 3 to collect radon cover and dope layer standard ring sealing connection, adopts airtight pad 3 and fixing bolt 6 to connect dope layer standard ring and radon source container shell 5 sealing connection. As shown in fig. 2, the fixing screw 1, the air-tight pad 3 and the fixing bolt 6 are used for realizing the sealing connection between the radon source container shell 5 and the first paint layer standard ring 41 and the second paint layer standard ring 42, the sealing connection between the first paint layer standard ring 41 and the first radon collecting cover 21, and the sealing connection between the second paint layer standard ring 42 and the second radon collecting cover 22. The specific radon collection cover, the paint layer standard ring and the radon source container shell are shown in figure 5.
Therefore, the radon diffusion coefficient measuring device provided by the embodiment at least has the following advantages: the method is suitable for measuring the radon with low concentration, and has high precision and small error; the method can be used for measuring the radon-proof effect, namely the radon diffusion coefficient, of various radon-proof coatings; the thickness of the coating to be detected is freely controlled by controlling the standard ring of the coating layer, so that the influence of the thickness gradient of the coating to be detected on the radon prevention efficiency can be detected; by controlling the temperature of the heating plate, the influence of the temperature gradient on the radon releasing rate of the radon source can be detected.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above detailed descriptions of the solutions provided in the present application, and the specific examples applied herein are set forth to explain the principles and implementations of the present application, and the above descriptions of the examples are only used to help understand the method and its core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A radon diffusion coefficient measuring device, comprising:
the radon source container shell is used for storing a radon source test piece and is provided with an opening;
the heat insulation plate is arranged on the inner side of the radon source container shell;
the heating plate is arranged on the inner side of the heat insulation plate;
the coating layer module is hermetically connected with the opening of the radon source container shell and is provided with a hollow structure, and the hollow structure is used for fixing a coating to be detected;
the radon collecting cover is hermetically connected with the coating layer module;
a radon gas input pipe and a radon gas output pipe which are arranged on the radon collection cover;
and the radon measuring instrument is connected with the radon gas input pipe and the radon gas output pipe.
2. The radon diffusion coefficient measuring device in accordance with claim 1, further comprising:
and the drier is connected with the radon measuring instrument at one end and the radon measuring instrument at the other end, and the radon input pipe is connected with the radon measuring instrument through the drier.
3. The radon diffusion coefficient measuring device in accordance with claim 2, wherein said radon meter is a RAD-7 radon meter.
4. The radon diffusion coefficient measuring device as defined in claim 1, wherein the shape of the hollow structure of said paint layer module is the same as the shape of the opening of said radon source container housing.
5. The radon diffusion coefficient measuring device in accordance with claim 4, wherein said paint layer module is a standard ring of paint layer in the shape of a ring.
6. The radon diffusion coefficient measuring device in accordance with claim 5, comprising:
a plurality of paint layer modules of different thicknesses.
7. The radon diffusion coefficient measuring device in accordance with claim 1, further comprising:
fixing screws, airtight pads and fixing bolts; the fixing screw, the airtight pad and the fixing bolt are used for achieving sealing connection between the radon source container shell and the coating layer module and achieving sealing connection between the coating layer module and the radon collecting cover.
8. The radon diffusion coefficient measuring device as set forth in any one of claims 1 to 7, wherein said radon source container housing is provided with a first opening and a second opening; correspondingly, the radon diffusion coefficient measuring device comprises:
the first coating layer module and the second coating layer module are hermetically connected with the first opening and the second opening of the radon source container shell, and are provided with hollow structures which are used for fixing a coating to be measured;
the first radon collection cover is hermetically connected with the first coating layer module, and the second radon collection cover is hermetically connected with the second coating layer module;
the first radon gas input pipe and the first radon gas output pipe are arranged on the first radon collecting cover, and the second radon gas input pipe and the second radon gas output pipe are arranged on the second radon collecting cover;
the first radon measuring instrument is connected with the first radon gas input pipe and the first radon gas output pipe, and the second radon measuring instrument is connected with the second radon gas input pipe and the second radon gas output pipe.
9. The radon diffusion coefficient measuring device of claim 8, wherein said first opening and said second opening of said radon source container housing are oppositely disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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