CN213301283U - Transmitter with radiation protection function - Google Patents
Transmitter with radiation protection function Download PDFInfo
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- CN213301283U CN213301283U CN202021587341.0U CN202021587341U CN213301283U CN 213301283 U CN213301283 U CN 213301283U CN 202021587341 U CN202021587341 U CN 202021587341U CN 213301283 U CN213301283 U CN 213301283U
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- China
- Prior art keywords
- shielding structure
- transmitter
- radiation protection
- protection function
- shell
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- 230000005855 radiation Effects 0.000 title claims abstract description 35
- 238000012545 processing Methods 0.000 claims description 14
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- MOWMLACGTDMJRV-UHFFFAOYSA-N nickel tungsten Chemical compound [Ni].[W] MOWMLACGTDMJRV-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229910003271 Ni-Fe Inorganic materials 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 230000005251 gamma ray Effects 0.000 abstract description 3
- 230000003245 working effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 229910001080 W alloy Inorganic materials 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- LTOKVQLDQRXAHK-UHFFFAOYSA-N [W].[Ni].[Cu] Chemical compound [W].[Ni].[Cu] LTOKVQLDQRXAHK-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 3
- OWUGOENUEKACGV-UHFFFAOYSA-N [Fe].[Ni].[W] Chemical compound [Fe].[Ni].[W] OWUGOENUEKACGV-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The application provides a changer with radiation protection function includes: a housing having an accommodating space; the cover body is at least fixed at one end of the shell and is matched and sealed with the shell; a sealed shielding structure is formed, and the shielding structure is accommodated in the shell and fixedly connected to the port of the shell; and the circuit board piece is packaged in the shielding structure. This application is through setting up shielding structure in the changer casing, encapsulates circuit board spare in shielding structure, can effectively reduce gamma ray to electronic components radiation dose on the circuit board spare, improves the radiation protection ability of changer, ensures its working property, has prolonged the life of changer.
Description
Technical Field
The application relates to the technical field of instruments, in particular to a transmitter with a radiation protection function.
Background
The transmitter is a field instrument for detecting parameters of fluid such as flow, differential pressure, liquid level and density in the operation of production process, and because it is directly contacted with the measured medium, it can be frequently operated in the severe environments of high temp., low temp., corrosion, vibration, impact and radiation, etc. and because of the large-scale and complex technological process and the application of computer distributed control, it has high requirements for accuracy, long-term stability and reliability of transmitter.
From the early-stage low-precision and heavy large-displacement mercury float type differential pressure gauge to the force balance type differential pressure transmitter with large volume, complex structure, poor reliability and low precision in the 50 s. By the 70 s, with the development of technology, the 3 rd generation micro-displacement electronic transmitter appeared. After decades of development processes, the new generation of differential pressure transmitter has the advantages of simple structure, small volume, high precision and good reliability. The sensitive elements mainly include capacitance type, diffused silicon type, inductance type and the like. In the 90 s, due to the rapid development of electronic technology, computer technology and the appearance of micro-electromechanical technology, the smaller the differential pressure transmitter is, the stronger the function is, and the rapid development is in the forward direction of miniaturization, high precision, intellectualization and digitization.
However, the existing transmitter is applied to a radiation scene, for example, the transmitter is installed in a nuclear power station, and due to the high-energy particle radiation and high-temperature environment of the nuclear reaction, the electronic components inside the transmitter are easy to induce the working characteristic change under the particle radiation and high-temperature environment, thereby affecting the measurement accuracy and efficacy of the transmitter instrument, and reducing the reliability and the service life of the transmitter.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a transmitter with radiation protection function, which is used to solve the problem of the performance and reliability of the transmitter being reduced in the high-energy particle radiation environment in the prior art.
To achieve the above and other related objects, there is provided in a first aspect of the present application a transmitter with radiation protection function including:
a housing having an accommodating space;
the cover body is at least fixed at one end of the shell and is matched and sealed with the shell;
a sealed shielding structure is formed, and the shielding structure is accommodated in the shell and fixedly connected to the port of the shell;
and the circuit board piece is packaged in the shielding structure.
In certain embodiments of the first aspect of the present application, the shield structure is in non-contact connection with the inner wall of the housing.
In certain embodiments of the first aspect of the present application, there is a gap between the inner wall of the housing and the shielding structure that mitigates space convection.
In certain embodiments of the first aspect of the present application, the gap has a width of 0.5 to 10 mm.
In certain embodiments of the first aspect of the present application, the shielding structure is made of tungsten-nickel alloy or lead.
In certain embodiments of the first aspect of the present application, the shielding structure is made of inconel.
In certain embodiments of the first aspect of the present application, the circuit board element comprises signal processing components and terminals, one of the shielding structures enclosing the signal processing components; the other of the shield structures seals the terminal.
In certain embodiments of the first aspect of the present application, the shielding structure is provided with a through hole extending through the shielding structure.
In certain embodiments of the first aspect of the present application, further comprising: and one end of the power supply and the signal wire is connected with the wiring terminal, and the other end of the power supply and the signal wire penetrates through the through hole to be connected with the outside.
In certain embodiments of the first aspect of the present application, further comprising: and one end of the sensor signal wire is connected with the signal processing component, and the other end of the sensor signal wire penetrates through the through hole to be connected with the outside.
As mentioned above, the transmitter with radiation protection function of this application has following beneficial effect:
through set up shielding structure in the changer casing, encapsulate circuit board in shielding structure, can effectively reduce gamma ray to the electronic components radiation dose on the circuit board, improve the radiation protection ability of changer, ensure its working property, prolonged the life of changer.
Drawings
FIG. 1 shows a cross-sectional view of a transmitter with radiation protection provided for the present application.
Description of the element reference numerals
1 cover body
2 casing
3 Signal processing component
4 shield structure
5 Power supply and signal line
6 sensor signal line
7 connecting terminal
8 gap
Detailed Description
The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.
In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Spatially relative terms, such as "upper," "lower," "left," "right," "lower," "below," "lower," "above," "upper," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature as illustrated in the figures.
Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first steering oscillation may be referred to as a second steering oscillation, and similarly, the second steering oscillation may be referred to as a first steering oscillation, without departing from the scope of the various described embodiments.
Referring to fig. 1, the present application provides a cross-sectional view of a transmitter with radiation protection function, which is detailed as follows:
a housing 2 having an accommodation space;
the cover body 1 is at least fixed at one end of the shell body 2 and is matched and sealed with the shell body 2;
a sealed shielding structure 4 is formed, and the shielding structure 4 is accommodated in the shell 2 and fixedly connected to a port of the shell 2;
and the circuit board piece is encapsulated in the shielding structure 4.
It should be noted that two ends of the housing 2 may be respectively provided with a cover 1, so as to form a sealed space, and the cover 1 and the housing 2 are made of stainless steel, so as to enhance the corrosion resistance and structural strength of the transmitter in a radiation scene.
It should be further noted that the circuit board (not shown in fig. 1) includes the signal processing component 3 and the connection terminal 7 in fig. 1, which are respectively packaged in different shielding structures 4, for example, the signal processing component 3 is sensitive to radiation exposure and temperature due to the fact that it includes various electronic components, and thus, is susceptible to denaturation and failure in a radiation scene.
In this embodiment, since the shielding structure 4 wraps the circuit board in each direction in the space, high-energy particle rays generated by nuclear reaction, especially gamma rays, pass through the shielding structure made of the tungsten-nickel alloy material when irradiating the electronic component, so that the ray energy is attenuated, the radiation dose received by the electronic component on the circuit board is reduced, and the radiation protection capability of the transmitter is improved.
In other embodiments, the shielding structure 4 is in non-contact connection with the inner wall of the housing 2, that is, the shielding structure 4 is not embedded (disposed) on the inner wall of the housing 2, but is placed in the space formed by the housing 2, so that the circuit board can be protected, and the radiation protection capability of the transmitter can be improved.
In other embodiments, there is a gap 8 between the inner wall of the housing 2 and the shielding structure 4 to slow down the space convection, and the width of the gap 8 is kept within a reasonable range of 0.5-10 mm, for example, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. The gap is typically set according to the temperature of the environment in which the transmitter is operating, e.g., the higher the temperature, the smaller the gap interval in order to attenuate spatial convection. It should be noted that the temperature can be effectively isolated through the gap, so that the temperature in the shielding mechanism is ensured not to be increased and changed too much along with the external temperature, and the normal work of the circuit board is ensured. In order to show the gap in fig. 1, the gap is enlarged and will not be described again.
In this embodiment, through the interval between control casing 2 and the shielding structure 4 for air between shielding structure 4 and the casing 2 tends to static under the temperature field difference, is difficult to take place convection heat transfer, because static air heat conductivity coefficient itself is very low, then the reasonable layout of air gap size between this shielding structure 4 and casing 2 can play and effectively prevent external thermal shock, makes the temperature rise of key components and parts slow down, protects the effect of key components and parts.
In other embodiments, the shielding structure 4 is made of a tungsten-nickel alloy, or is made of lead, for example, a tungsten-nickel-iron alloy, or is made of a tungsten-nickel-copper alloy, and particularly, the shielding structure 4 is preferably made of a tungsten-nickel-iron alloy, which has a specific gravity: a high density of 18.8g/cm 3; the strength is high: the tensile strength is 700 and 1000 MPa; the ray shielding capability is strong: under the condition of the same thickness, the ray shielding capacity of the tungsten alloy is more than 1.7 times that of lead, and when the ray is stronger, the ray shielding capacity difference between the tungsten alloy and the lead is more obvious; the heat conductivity coefficient is large: the heat conductivity coefficient of the tungsten alloy is 5 times that of the die steel; the thermal expansion coefficient is small: the thermal expansion coefficient of tungsten is 4-6 multiplied by 10 < -6 >/DEG C, and only the thermal expansion coefficient of iron or steel is 1/2-1/3; the product has good shaping, processing and welding properties; compared with the toxicity of lead, the tungsten alloy material has the characteristic of environmental protection, and the tungsten alloy shielding part does not harm the safety of human bodies when being used for manufacturing the radiation detector; compared with tungsten-nickel-copper alloy, the tungsten-nickel-iron alloy has certain ferromagnetism, and the mechanical property and the processing property of the tungsten-nickel-copper alloy are superior to those of the tungsten-nickel-copper alloy.
In other embodiments, in fig. 1, there are a plurality of shielding structures 4, and the circuit board assembly includes a signal processing component 3 and a connection terminal 7, wherein one shielding structure 4 seals the signal processing component 3; the other of the shielding structures 4 seals the terminal 7. The two shielding structures 4 are provided with through holes penetrating through the shielding structures; the circuit board is protected by using a shielding structure through spatial dislocation in the accommodating space, for example, the wiring terminal 7 is connected with the power supply and signal wire 5 by using a through hole; the signal processing section 3 is connected to the sensor signal line 6 by a through hole.
In the embodiment, the power and signal line 5 and the sensor signal line 6 are connected to the outside (e.g. a sensor) inside the housing 2 through a through hole, and it should be noted that the power and signal line 5 and the sensor signal line 6 can also be connected to the outside through the housing according to the user's requirement. The power supply and signal line 5 is connected with an input working power supply and an output signal; the sensor signal wire 6 sends the signals collected by the sensor to the signal processing part 3 for processing, so that the transmitter can normally work.
To sum up, this application encapsulates circuit board spare in shielding structure through set up shielding structure in the changer casing, can effectively reduce gamma ray to the last electronic components radiation dose of circuit board spare, improves the radiation protection ability of changer, ensures its working property, prolongs its life. Therefore, the application effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (9)
1. A transmitter with a radiation protection function is characterized by comprising:
a housing having an accommodating space;
the cover body is at least fixed at one end of the shell and is matched and sealed with the shell;
a sealed shielding structure is formed, and the shielding structure is accommodated in the shell and fixedly connected to the port of the shell;
and the circuit board piece is packaged in the shielding structure.
2. The transmitter with radiation protection function of claim 1, wherein said shielding structure is in non-contact connection with the inner wall of said housing.
3. The transmitter with radiation protection function of claim 1 or 2, wherein a gap for slowing down space convection is arranged between the inner wall of the housing and the shielding structure.
4. The transmitter with the radiation protection function as claimed in claim 3, wherein the width of the gap is 0.5-10 mm.
5. The transmitter with radiation protection function of claim 1, wherein the shielding structure is made of tungsten-nickel alloy or lead.
6. The transmitter with radiation protection function of claim 5, wherein the shielding structure is made of W-Ni-Fe alloy.
7. The transmitter with radiation protection function of claim 1, wherein the shielding structure is provided with a through hole penetrating through the shielding structure.
8. The transmitter with radiation protection function of claim 7, further comprising: and one end of the power supply and signal wire is connected with the wiring terminal of the circuit board, and the other end of the power supply and signal wire penetrates through the through hole to be connected with the outside.
9. The transmitter with radiation protection function of claim 7, further comprising: and one end of the sensor signal wire is connected with the signal processing part of the circuit board part, and the other end of the sensor signal wire penetrates through the through hole to be connected with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021587341.0U CN213301283U (en) | 2020-08-03 | 2020-08-03 | Transmitter with radiation protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021587341.0U CN213301283U (en) | 2020-08-03 | 2020-08-03 | Transmitter with radiation protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213301283U true CN213301283U (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021587341.0U Active CN213301283U (en) | 2020-08-03 | 2020-08-03 | Transmitter with radiation protection function |
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| CN (1) | CN213301283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565964A (en) * | 2021-06-22 | 2021-10-29 | 清华大学 | Magnetic liquid sealing device with radiation protection function |
-
2020
- 2020-08-03 CN CN202021587341.0U patent/CN213301283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565964A (en) * | 2021-06-22 | 2021-10-29 | 清华大学 | Magnetic liquid sealing device with radiation protection function |
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| TR01 | Transfer of patent right |
Effective date of registration: 20231126 Address after: 400700 No. 1, people's village, Beibei District, Chongqing Patentee after: CHONGQING CHUANYI AUTOMATION Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: 400 700 People's Village No. 1, Beibei District, Beibei District, Chongqing Patentee before: CHONGQING CHUANYI AUTOMATION Co.,Ltd. |