Radiation resistant sensor

Abstract

The application discloses an anti-radiation sensor, which comprises a sensor body, a base fixedly connected to the bottom of the sensor body, and a sensing surface on the top of the sensor body; and an anti-radiation assembly surrounding the side surface of the sensor body, which comprises, from inside to outside, a heat insulation layer, an anti-radiation layer and a protective shell. The application provides an anti-radiation sensor, which can reduce the influence of external radiation on the sensor by arranging the anti-radiation assembly outside the sensor body, so that the sensor can normally work in a high-dose-rate and high-cumulative-dose radiation environment, and stable operation of the sensor is ensured.

Description

Technical Field

[0001] This application relates to the field of sensors, and more particularly to a radiation-resistant sensor for use in nuclear power plants. Background Technology

[0002] In the complex system architecture of a nuclear power plant, sensors occupy a core monitoring position. From the nuclear island to the conventional island, numerous sensors are distributed throughout, responsible for collecting various critical information in real time. For example, inside the nuclear reactor, sensors monitor neutron flux, which is crucial for precisely controlling the nuclear fission reaction rate; in the primary coolant system, sensors closely monitor parameters such as temperature, pressure, and flow rate to ensure that the coolant effectively removes the heat generated by the reactor; and in the secondary coolant system, sensors monitor various parameters of the steam to ensure the efficient and stable operation of the turbine. However, most existing sensors are manufactured based on conventional electronic materials and processes and have not been specifically optimized for the radiation environment of nuclear power plants. After being exposed to a certain dose of radiation, the performance of these sensors will significantly degrade, affecting their reliability and service life, and consequently impacting the normal operation of various equipment within the nuclear power plant. Utility Model Content

[0003] To address one of the technical problems existing in the prior art, this application provides a radiation-resistant sensor that can reduce the impact of external radiation on the sensor, enabling it to operate normally in a radiation environment.

[0004] According to some embodiments of this application, a radiation-resistant sensor is provided, comprising: a sensor body, the sensor body being columnar, a base being fixedly connected to the bottom of the sensor body, and the top surface of the sensor body being a sensing surface; and a radiation-resistant component, the radiation-resistant component surrounding the side of the sensor body, the radiation-resistant component comprising, from the inside out, a heat insulation layer, a radiation-resistant layer, and a protective shell.

[0005] In some embodiments of this application, the radiation-resistant component includes a first assembly and a second assembly, both of which include a heat insulation layer, a radiation-resistant layer, and a protective shell; both the first assembly and the second assembly are provided with mounting plates, and the mounting plates are provided with a plurality of mounting screw holes; during assembly, the mounting plates of the first assembly and the second assembly are arranged opposite to each other, and the internal threads of the mounting screw holes are connected to mounting bolts to assemble the first assembly and the second assembly.

[0006] In some embodiments of this application, a connecting pipe is provided on one side of the sensor body, and a window is opened on the anti-radiation component, through which the connecting pipe passes; an anti-radiation block is provided on the sensor body corresponding to the window.

[0007] In some embodiments of this application, the material of the radiation-resistant layer is a nano-aluminum-tantalum composite coating.

[0008] In some embodiments of this application, the protective shell is made of lead.

[0009] In some embodiments of this application, a protective cover is fixedly provided on the top of the sensor body, and the protective cover covers the sensing surface.

[0010] In some embodiments of this application, a placement slot is provided on the top of the sensor body, and the protective cover is fixedly disposed inside the placement slot.

[0011] In some embodiments of this application, an annular fixing seat is also included, and the base is detachably mounted on the fixing seat.

[0012] In some embodiments of this application, the fixing base is provided with a plurality of fixing screw holes, and a plurality of fixing bolts are threaded onto the fixing screw holes.

[0013] In some embodiments of this application, the fixing base is provided with two sets of snap-fit ​​components, the two sets of snap-fit ​​components are arranged opposite to each other, and each set of snap-fit ​​components includes a plug-in rod extending into the inner ring of the fixing base; the outer side of the base is provided with two plug-in holes corresponding to the snap-fit ​​components, and when the base is installed on the fixing base, the plug-in rod is inserted into the plug-in hole to fix the base.

[0014] In some embodiments of this application, the snap-fit ​​assembly includes a movable plate and a movable rod, the plug rod, the movable plate, and the movable rod are fixedly connected; the fixed base is provided with a mounting groove, the movable plate and the movable rod are movably disposed in the mounting groove, and operating the movable plate to move can drive the plug rod to move radially along the fixed base.

[0015] In some embodiments of this application, the snap-fit ​​assembly further includes a return spring, which is sleeved on the movable rod and acts on the movable plate to move the plug rod radially toward the inner ring of the fixed base.

[0016] The beneficial effects of this application are: This application provides a radiation-resistant sensor. By providing a radiation-resistant component outside the sensor body, the influence of external radiation on the sensor can be reduced, enabling it to work normally in a radiation environment with high dose rate and high cumulative dose, and ensuring stable operation of the sensor.

[0017] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned further by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this application, the following description will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this application and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the radiation-resistant sensor provided in this application;

[0020] Figure 2 for Figure 1 Exploded view of a medium-sized radiation-resistant sensor;

[0021] Figure 3 This is a schematic diagram of the radiation-resistant component.

[0022] Figure 4 This is a diagram showing the connection structure between the sensor body and the mounting base.

[0023] Figure 5 This is a schematic diagram of the snap-fit ​​assembly.

[0024] Label Explanation:

[0025] 1. Sensor body; 11. Connecting pipe; 12. Radiation-resistant block; 13. Sensing surface; 2. Radiation-resistant assembly; 21. First assembly; 22. Second assembly; 23. Mounting plate; 24. Mounting screw hole; 25. Window hole; 201. Heat insulation layer; 202. Radiation-resistant layer; 203. Protective shell; 3. Base; 31. Insertion hole; 4. Fixing base; 41. Snap-fit ​​assembly; 411. Insertion rod; 412. Moving plate; 413. Moving rod; 414. Return spring; 42. Mounting groove; 5. Protective cover; 6. Mounting bolt; 7. Fixing bolt. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] The following is in conjunction with the appendix Figures 1 to 5 The provided embodiments further illustrate the radiation-resistant sensor proposed in this application.

[0030] like Figures 1 to 3 As shown, some embodiments of this application provide a radiation-resistant sensor, including a sensor body 1, which is columnar. A base 3 is fixedly connected to the bottom of the sensor body 1, and the top surface of the sensor body 1 is a sensing surface 13. A radiation-resistant component 2 is provided on the side of the sensor body 1, surrounding the side of the sensor body 1. The radiation-resistant component 2 includes, from the inside out, a heat insulation layer 201, a radiation-resistant layer 202, and a protective shell 203. The heat insulation layer 201 can isolate the heat between the outside and the sensor body 1. The radiation-resistant layer 202 has good radiation resistance performance and can reduce the impact of external radiation on the sensor body 1. The protective shell 203 provides basic protection. By providing a radiation-resistant component 2 outside the sensor body 1, this application can reduce the impact of external radiation on the sensor, enabling it to work normally in a radiation environment with high dose rate and high cumulative dose, ensuring stable operation of the sensor, and thus ensuring the stable operation of various equipment in the nuclear power plant.

[0031] like Figure 2 As shown, in some embodiments of this application, the radiation-resistant component 2 includes a first assembly 21 and a second assembly 22, such as... Figure 3 As shown, both the first assembly 21 and the second assembly 22 include a heat insulation layer 201, a radiation-resistant layer 202, and a protective shell 203. Dividing the radiation-resistant component 2 into the first assembly 21 and the second assembly 22 makes it easier to install the radiation-resistant component 2 onto the sensor body 1, and even allows the radiation-resistant component 2 to be used with some existing sensors, thereby improving the existing sensor and making it a radiation-resistant sensor, thus expanding its applicability. It is conceivable that in other embodiments of this application, the radiation-resistant component 2 can also be composed of two or more assemblies, achieving the same effect. Furthermore, it is conceivable that in other embodiments of this application, the radiation-resistant component 2 can also be a single piece, directly sleeved on the outside of the sensor body 1.

[0032] Furthermore, such as Figure 2 As shown, in some embodiments of this application, both the first assembly 21 and the second assembly 22 are provided with mounting plates 23, and the mounting plates 23 are provided with a plurality of mounting screw holes 24. During assembly, the mounting plates 23 of the first assembly 21 and the second assembly 22 are arranged opposite to each other, and the internal threads of the mounting screw holes 24 are connected to mounting bolts 6. The first assembly 21 and the second assembly 22 are assembled together by means of threaded connection, which can ensure the reliability of the connection.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments of this application, a connecting pipe 11 is provided on one side of the sensor body 1, extending from the side of the sensor body 1 for connecting to an external power cord. To accommodate the structure of the connecting pipe 11, a window 25 is provided on the anti-radiation component 2, through which the connecting pipe 11 passes. To reduce external radiation from entering through the window 25 and affecting the sensor body 1, an anti-radiation block 12 is provided on the sensor body 1 corresponding to the window 25. The anti-radiation block 12 is made of heat-insulating and anti-radiation materials, and its size is approximately the same as that of the window 25, filling the gap at the location of the window 25, thereby providing better anti-radiation protection for the side of the sensor body 1 and reducing the impact of external radiation on the sensor.

[0034] like Figure 3 As shown, in some embodiments of this application, the material of the anti-radiation layer 202 is a nano-aluminum-tantalum composite coating, which has excellent anti-radiation performance and can effectively block external radiation from the sensor.

[0035] like Figure 3 As shown, in some embodiments of this application, the protective shell 203 is made of lead. Lead also has good anti-radiation properties, which can further reduce the impact of external radiation on the sensor while protecting the sensor body 1.

[0036] like Figure 1 and Figure 2 As shown, in some embodiments of this application, a protective cover 5 is fixedly disposed on the top of the sensor body 1, covering the sensing surface 13 and serving to protect the sensing surface 13 of the sensor body 1. Further, in some embodiments of this application, a placement groove is formed on the top of the sensor body 1, and the protective cover 5 is fixedly disposed inside the placement groove. The protective cover 5 is preferably made of a transparent material, allowing light to pass through it.

[0037] like Figure 2 and Figure 4 As shown, in some embodiments of this application, an annular mounting base 4 is also included, and the base 3 is detachably mounted on the mounting base 4. The mounting base 4 is usually fixedly connected to various devices, while detachably mounting the base 3 on the mounting base 4 allows for quick replacement of the sensor.

[0038] Furthermore, such as Figure 2 and Figure 4 As shown, in some embodiments of this application, the fixing seat 4 is provided with a plurality of fixing screw holes, and a plurality of fixing bolts 7 are threadedly connected to the fixing screw holes. The fixing seat 4 is fixed to various devices by means of threaded connection, which can improve the reliability of the connection of the fixing seat 4. It is conceivable that in other embodiments of this application, the fixing seat 4 can also be fixed to various devices by means of snap-fit, welding or other methods.

[0039] like Figure 4 and Figure 5As shown, in some embodiments of this application, the fixed base 4 is provided with two sets of snap-fit ​​components 41, which are arranged opposite to each other. Each set of snap-fit ​​components 41 includes a plug rod 411 extending into the inner ring of the fixed base 4. The outer side of the base 3 is provided with two plug holes 31 corresponding to the snap-fit ​​components 41. When the base 3 is installed on the fixed base 4, the plug rod 411 is inserted into the plug hole 31 to fix the base 3. Further, in some embodiments of this application, the snap-fit ​​component 41 includes a movable plate 412 and a movable rod 413, which are fixedly connected. The fixed base 4 is provided with a mounting groove 42, and the movable plate 412 and the movable rod 413 are movably disposed in the mounting groove 42. Moving the movable plate 412 can drive the plug rod 411 to move radially along the fixed base 4. The mounting base 4 in this application is equipped with two sets of snap-fit ​​components 41 to quickly fix the base 3, thereby enabling rapid installation and disassembly of the sensor body 1. This reduces the time that personnel spend in the radiation area, lowers the risk of radiation damage to personnel, and allows for quick adjustment and replacement according to specific needs, improving the flexibility and adaptability of the equipment.

[0040] like Figure 5 As shown, in some embodiments of this application, the snap-fit ​​assembly 41 further includes a return spring 414. The return spring 414 is sleeved on the moving rod 413. The return spring 414 acts on the moving plate 412 to make the plug rod 411 move radially towards the inner ring of the fixed base 4. The setting of the return spring 414 can make the moving plate 412 and the plug rod 411 quickly reset, ensuring that the plug rod 411 is reliably inserted into the plug hole 31.

[0041] It is understood that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that, for those skilled in the art, without departing from the concept of this application, the above technical features can be freely combined, and several modifications and improvements can be made, all of which fall within the protection scope of this application. Therefore, all equivalent transformations and modifications made within the scope of the claims of this application should fall within the coverage of the claims of this application.

Claims

1. A radiation-resistant sensor, characterized in that, include: The sensor body (1) is columnar, and a base (3) is fixedly connected to the bottom of the sensor body (1). The top surface of the sensor body (1) is the sensing surface (13). The anti-radiation component (2) surrounds the side of the sensor body (1). The anti-radiation component (2) includes, from the inside to the outside, a heat insulation layer (201), an anti-radiation layer (202), and a protective shell (203).

2. The radiation-resistant sensor as described in claim 1, characterized in that, The radiation-resistant component (2) includes a first assembly (21) and a second assembly (22), both of which include a heat insulation layer (201), a radiation-resistant layer (202), and a protective shell (203). Both the first assembly (21) and the second assembly (22) are provided with a mounting plate (23), and the mounting plate (23) is provided with a plurality of mounting screw holes (24); During assembly, the mounting plates (23) of the first assembly (21) and the second assembly (22) are arranged opposite to each other, and the mounting screw hole (24) is internally threaded with a mounting bolt (6) to assemble the first assembly (21) and the second assembly (22).

3. The radiation-resistant sensor as described in claim 2, characterized in that, A connecting pipe (11) is provided on one side of the sensor body (1), and a window (25) is provided on the anti-radiation component (2), through which the connecting pipe (11) passes; The sensor body (1) is provided with an anti-radiation block (12) corresponding to the window (25).

4. The radiation-resistant sensor as described in claim 2, characterized in that, The material of the radiation-resistant layer (202) is a nano-aluminum-tantalum composite coating.

5. The radiation-resistant sensor as described in claim 2, characterized in that, The protective shell (203) is made of lead.

6. The radiation-resistant sensor as described in claim 1, characterized in that, A protective cover (5) is fixedly provided on the top of the sensor body (1), and the protective cover (5) covers the sensing surface (13).

7. The radiation-resistant sensor as described in claim 1, characterized in that, It also includes a ring-shaped fixing seat (4), and the base (3) is detachably mounted on the fixing seat (4).

8. The radiation-resistant sensor as described in claim 7, characterized in that, The fixed base (4) is provided with two sets of snap-fit ​​components (41), the two sets of snap-fit ​​components (41) are arranged opposite to each other, and each set of snap-fit ​​components (41) includes a plug rod (411) extending into the inner ring of the fixed base (4); The base (3) has two insertion holes (31) on its outer side corresponding to the snap-fit ​​assembly (41). When the base (3) is installed on the fixing seat (4), the insertion rod (411) is inserted into the insertion hole (31) to fix the base (3).

9. The radiation-resistant sensor as described in claim 8, characterized in that, The snap-fit ​​assembly (41) includes a movable plate (412) and a movable rod (413), and the plug rod (411), the movable plate (412) and the movable rod (413) are fixedly connected; The fixed base (4) is provided with an installation groove (42). The movable plate (412) and the movable rod (413) are movably disposed in the installation groove (42). Operating the movable plate (412) to move can drive the plug rod (411) to move radially along the fixed base (4).

10. The radiation-resistant sensor as described in claim 9, characterized in that, The snap-fit ​​assembly (41) also includes a return spring (414), which is sleeved on the moving rod (413). The return spring (414) acts on the moving plate (412) to move the plug rod (411) radially toward the inner ring of the fixed seat (4).

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