Nuclear power plant irradiation-resistant temperature monitoring recorder

Abstract

The utility model discloses a nuclear power plant radiation-resistant temperature monitoring recorder which comprises a recorder body and a shielding protection structure, the recorder body comprises a data acquisition module and a power supply unit, and the shielding protection structure comprises a stainless steel upper cover body, a stainless steel lower cover body and a lead sleeve. The data acquisition module and the power supply unit are both installed in the lead sleeve, the stainless steel upper cover body is detachably connected with the stainless steel lower cover body, after the stainless steel upper cover body and the stainless steel lower cover body are connected, an accommodating space is formed in the stainless steel upper cover body and the stainless steel lower cover body, and the lead sleeve is located in the accommodating space. According to the nuclear power plant irradiation-resistant temperature monitoring recorder, radioactive rays in an irradiation area can be shielded to the maximum extent by using the lead sleeve, so that the acquisition module and the power supply unit are prevented from being influenced by the radioactive rays, and the acquisition module and the power supply unit can also work in the irradiation area; and the recording precision of the radiation-resistant temperature monitoring recorder of the nuclear power plant is improved.

Description

Technical Field

[0001] The utility model relates to the field of temperature monitoring recorders in nuclear power plants, and particularly to a radiation-resistant temperature monitoring recorder for nuclear power plants. Background Art

[0002] The control area is the core area of a nuclear power plant, which is equipped with many safety-class devices and key sensitive devices inside. The temperature around the devices affects the operating state of the devices. At present, the commonly used environmental data recorders in nuclear power plants mainly install the probe in the irradiated area, and the recorder can only be installed in the non-irradiated area. The temperature is transmitted to the recorder through a signal extension cable. Since the extension cable has a certain distance, it causes a certain attenuation to the signal transmission, affecting the recording accuracy. In addition, due to the relatively complex on-site environment, it is difficult to install the extension cable, and the extension cable itself will also bring inconvenience to the site.

[0003] Therefore, in order to facilitate the monitoring and recording of the temperature around the device to be measured, it is necessary to design a recorder that is easy to install, fix and monitor under irradiation conditions. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a radiation-resistant temperature monitoring recorder for nuclear power plants.

[0005] The technical solution adopted by the utility model to solve its technical problem is: to construct a radiation-resistant temperature monitoring recorder for nuclear power plants, which includes a recorder body and a shielding protection structure;

[0006] The recorder body includes a data acquisition module and a power supply unit;

[0007] The shielding protection structure includes a stainless steel upper cover body, a stainless steel lower cover body and a lead sleeve;

[0008] The data acquisition module and the power supply unit are both installed inside the lead sleeve. The stainless steel upper cover body and the stainless steel lower cover body are detachably connected. After the stainless steel upper cover body and the stainless steel lower cover body are connected, an accommodation space is formed inside them, and the lead sleeve is located in the accommodation space.

[0009] In some embodiments, the stainless steel upper cover body and the stainless steel lower cover body are threadedly connected.

[0010] In some embodiments, the lead sleeve includes an upper lead body and a lower lead body detachably connected to the upper lead body.

[0011] In some embodiments, there is a preset gap between the outer wall surface of the lower lead body and the inner wall surface of the stainless steel lower cover body.

[0012] In some embodiments, the recorder body further includes a probe. A first through hole is formed in the upper lead body, and a second through hole corresponding to the first through hole is formed in the stainless steel upper cover body. The probe is inserted through the first through hole and the second through hole.

[0013] In some embodiments, the nuclear power plant radiation-resistant temperature monitoring recorder further includes a gland. The gland is connected to the upper lead body and covers the upper part of the first through hole. The main body of the gland is hermetically connected to the second through hole, and a communication hole for fixing the probe is formed in the gland.

[0014] In some embodiments, the cross-sectional shapes of the upper lead body, the lower lead body, the stainless steel upper cover body, and the stainless steel lower cover body are circular.

[0015] In some embodiments, the outer diameter of the lower lead body is 42 mm to 46 mm;

[0016] The outer diameter of the stainless steel lower cover body is 48 mm to 52 mm.

[0017] In some embodiments, the distance between the upper end surface of the stainless steel upper cover body and the lower end surface of the stainless steel lower cover body is 110 mm to 120 mm.

[0018] In some embodiments, the nuclear power plant radiation-resistant temperature monitoring recorder further includes an upper computer reading and analysis module, and the upper computer reading and analysis module is communicatively connected to the data acquisition module.

[0019] Implementing the present utility model has the following beneficial effects: The stainless steel upper cover body and the stainless steel lower cover body are corrosion-resistant and high-temperature resistant, have high strength and rigidity, are easy to process, can be used as the outer shell of the nuclear power plant radiation-resistant temperature monitoring recorder, and ensure the strength and use stability of the nuclear power plant radiation-resistant temperature monitoring recorder. The lead sleeve is installed in the accommodation space formed by the stainless steel upper cover body and the stainless steel lower cover body. The lead sleeve can shield the radioactive rays in the irradiation area to the greatest extent, prevent the acquisition module and the power supply unit from being affected by the radioactive rays, and enable the acquisition module and the power supply unit to also work in the irradiation area, improving the recording accuracy of the nuclear power plant radiation-resistant temperature monitoring recorder. In addition, the stainless steel upper cover body and the stainless steel lower cover body are detachably connected, which also facilitates the installation and disassembly of the recorder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solution of the present utility model, the following will further explain the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:

[0021] Figure 1 is a structural sectional view of the radiation-resistant temperature monitoring recorder in some embodiments of the present utility model;

[0022] Figure 2 is a three-dimensional schematic diagram of the radiation-resistant temperature monitoring recorder in some embodiments of the present utility model. Specific Embodiments

[0023] For a clearer understanding of the technical features, purposes, and effects of the present utility model, the specific embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings and are constructed and operated in a specific orientation, and are only for the convenience of describing the technical solution, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0024] It should also be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located above the other element, or there may also be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. can explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Please refer to Figure 1 and Figure 2, is a nuclear power plant radiation-resistant temperature monitoring recorder in some embodiments of the present utility model, which can be used for environmental temperature monitoring in the control area of a nuclear power plant. It includes a recorder body 1 and a shielding protection structure 2. The recorder body 1 includes a data acquisition module and a power supply unit. The shielding protection structure 2 includes a stainless steel upper cover body 21, a stainless steel lower cover body 22, and a lead sleeve 3. The data acquisition module and the power supply unit are both installed inside the lead sleeve 3. The stainless steel upper cover body 21 and the stainless steel lower cover body 22 are detachably connected. After the stainless steel upper cover body 21 and the stainless steel lower cover body 22 are connected, an accommodation space 23 is formed inside, and the lead sleeve 3 is located in the accommodation space 23.

[0026] Understandably, the stainless steel upper cover body 21 and the stainless steel lower cover body 22 are corrosion-resistant and high-temperature resistant, have high strength and rigidity, are easy to process, and can be used as the outer casing of the nuclear power plant radiation-resistant temperature monitoring recorder, ensuring the strength and use stability of the nuclear power plant radiation-resistant temperature monitoring recorder. The lead sleeve 3 is installed in the accommodation space 23 formed by the stainless steel upper cover body 21 and the stainless steel lower cover body 22. The lead sleeve 3 is made of lead material. The principle of lead shielding rays is to use the high density and high atomic number of lead to absorb and scatter rays. The rays can be alpha particles, beta particles, gamma rays, etc. These rays will interact with the atoms of the substance when passing through the substance, thereby reducing their energy or being scattered. Using the lead sleeve 3 can shield the radioactive rays in the irradiation area to the greatest extent, prevent the acquisition module and the power supply unit from being affected by radioactive rays, and enable the acquisition module and the power supply unit to also work in the irradiation area, improving the recording accuracy of the nuclear power plant radiation-resistant temperature monitoring recorder. In addition, the detachable connection between the stainless steel upper cover body 21 and the stainless steel lower cover body 22 also facilitates the installation and disassembly of the recorder body 1.

[0027] The stainless steel upper cover body 21 and the stainless steel lower cover body 22 are threadedly connected for easy disassembly. The lead sleeve 3 includes an upper lead body 31 and a lower lead body 32 detachably connected to the upper lead body 31. The upper lead body 31 and the lower lead body 32 can also be threadedly connected.

[0028] Among them, there is a preset gap between the outer wall surface of the lower lead body 32 and the inner wall surface of the stainless steel lower cover body 22 to facilitate the removal of the lead sleeve 3. The preset gap is preferably 2 mm.

[0029] Furthermore, the recorder body 1 further includes a probe 11. A first through hole 311 is opened on the upper lead body 31, and a second through hole 211 corresponding to the first through hole 311 is opened on the stainless steel upper cover body 21. The probe 11 passes through the first through hole 311 and the second through hole 211, and the probe 11 can extend out of the accommodation space 23 for detection.

[0030] The radiation-resistant temperature monitoring recorder of the nuclear power plant further includes a gland 4. The gland 4 is connected to the upper lead body 31 and covers the upper part of the first through hole 311. The main body of the gland 4 is hermetically connected to the second through hole 211, and a communication hole for fixing the probe 11 is provided in the gland 4. The main body of the gland 4 can be threadedly connected to the second through hole 211. The gland 4 can be used for fastening and sealing the probe 11, so that the probe 11 does not generate axial displacement and radial rotation, ensuring the normal connection of the probe 11. At the same time, the gland 4 covers the upper part of the first through hole 311 and is hermetically connected to the second through hole 211, ensuring the overall sealing performance of the radiation-resistant temperature monitoring recorder of the nuclear power plant, and can prevent dust and water.

[0031] In this embodiment, the cross-sectional shapes of the upper lead body 31, the lower lead body 32, the stainless steel upper cover body 21, and the stainless steel lower cover body 22 are circular. In some other embodiments, the cross-sectional shapes of the upper lead body 31, the lower lead body 32, the stainless steel upper cover body 21, and the stainless steel lower cover body 22 can also be rectangular, elliptical or other shapes, which are not specifically limited here.

[0032] The outer diameter of the lower lead body 32 is 42 mm to 46 mm, and preferably 44 mm. The outer diameter of the stainless steel lower cover body 22 is 48 mm to 52 mm, and preferably 50 mm. The distance between the upper end face of the stainless steel upper cover body 21 and the lower end face of the stainless steel lower cover body 22 is 110 mm to 120 mm, and preferably 112 mm.

[0033] Furthermore, the radiation-resistant temperature monitoring recorder of the nuclear power plant further includes a host computer reading and analyzing module, and both the host computer reading and analyzing module and the data acquisition module are communicatively connected. The host computer reading and analyzing module can obtain the data information of the data acquisition module and perform data reading, display, storage and analysis.

[0034] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A radiation-resistant temperature monitoring recorder for a nuclear power plant, characterized in that: It comprises a recorder body (1) and a shielding protection structure (2); The recorder body (1) comprises a data acquisition module and a power supply unit; The shielding protection structure (2) comprises a stainless steel upper cover (21), a stainless steel lower cover (22) and a lead sleeve (3); The data acquisition module and the power supply unit are both installed inside the lead sleeve (3); the stainless steel upper cover (21) and the stainless steel lower cover (22) are detachably connected; after the stainless steel upper cover (21) and the stainless steel lower cover (22) are connected, an accommodating space (23) is formed inside the stainless steel upper cover (21) and the stainless steel lower cover (22); the lead sleeve (3) is located in the accommodating space (23).

2. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 1, characterized in that: The stainless steel upper cover body (21) is threadedly connected to the stainless steel lower cover body (22).

3. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 1, characterized in that: The lead sleeve (3) comprises an upper lead body (31) and a lower lead body (32) detachably connected to the upper lead body (31).

4. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 3, characterized in that: There is a preset gap between the outer wall surface of the lower lead body (32) and the inner wall surface of the stainless steel lower cover body (22).

5. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 3, characterized in that: The recorder body (1) also includes a probe (11), the upper lead body (31) is provided with a first through hole (311), the stainless steel upper cover body (21) is provided with a second through hole (211) corresponding to the first through hole (311), and the probe (11) is inserted into the first through hole (311) and the second through hole (211).

6. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 5, characterized in that: The nuclear power plant radiation-resistant temperature monitoring recorder also includes a gland (4), which is connected to the upper lead body (31) and covers the top of the first through hole (311), the main body of the gland (4) is sealed and connected to the second through hole (211), and a connecting hole for fixing the probe (11) is opened in the gland (4).

7. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 3, characterized in that: The cross-sectional shapes of the upper lead body (31), the lower lead body (32), the stainless steel upper cover body (21) and the stainless steel lower cover body (22) are circular.

8. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 3, characterized in that: The outer diameter of the lower lead body (32) is 42 mm to 46 mm; The outer diameter of the stainless steel lower cover (22) is 48 mm to 52 mm.

9. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 1, characterized in that: The distance between the upper end surface of the stainless steel upper cover body (21) and the lower end surface of the stainless steel lower cover body (22) is 110 mm to 120 mm.

10. The radiation-resistant temperature monitoring recorder for a nuclear power plant according to claim 1, characterized in that: The nuclear power plant radiation resistance temperature monitoring recorder also includes a host computer reading and analysis module, and the host computer reading and analysis module is communicatively connected with the data acquisition module.

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