Anti-radiation device for fire alarm detector of nuclear power station

Abstract

The utility model relates to the technical field of anti-radiation devices, and discloses a nuclear power station fire alarm detector anti-radiation device which comprises a base station, the top of the base station is provided with an anti-radiation shell, the top of the anti-radiation shell is fixedly provided with a mounting frame, and the top of the mounting frame is fixedly provided with a filter screen. A lead sheath shielding layer is arranged to provide a first layer of radiation protection for the detector, a boron carbide inner layer protection plate enhances the radiation protection capability, a sealing gasket ensures the sealing performance of the shell and prevents radiation leakage, further, a motor is used for driving, the output end of the motor is connected with a rotating shaft and drives fan blades to rotate, and the fan blades rotate to generate airflow, so that the radiation protection performance of the detector is improved. Heat generated by the detector is quickly dissipated into the air through the cooling fins, and in order to maintain the sealing performance of the device, the outer wall of the rotating shaft is sleeved with the sealing ring, so that intrusion of radiation and dust is effectively prevented, and the effect of effectively preventing radiation infiltration from causing damage to the detector body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation protection devices, in particular to a radiation protection device for a fire alarm detector in a nuclear power plant. Background Technique

[0002] Fire alarm detectors in nuclear power plants are important components of the nuclear power plant safety system. They are responsible for monitoring the internal environment of the nuclear power plant. Once an emergency such as a fire occurs, they can quickly send out alarm signals so that timely measures can be taken for handling. During the power operation period of some nuclear island buildings in the nuclear power unit, the radiation dose is relatively high, and there are a large number of rays inside, such as: α rays, β rays, γ rays, neutrons and other particles with high harm and high energy. Among them, γ rays and neutrons are both high-energy particles with strong penetration, which will cause certain damage to the internal circuit of the fire alarm detector.

[0003] There is a high level of radiation in the nuclear power plant environment, including neutrons, gamma rays, etc. These radiation particles have extremely strong penetration and destructive power, and can directly damage the core components such as the electronic components and sensors of the detector, resulting in the detector being unable to work properly or its performance deteriorating. The fire alarm system of a nuclear power plant usually needs to be connected to a central control system or other safety systems to achieve real-time transmission and sharing of information. Radiation interference may damage the data transmission link, resulting in the information being unable to be transmitted normally, thus affecting the coordination and effectiveness of the entire safety system. Therefore, it is necessary to design a radiation protection device for a fire alarm detector in a nuclear power plant to ensure that the fire alarm detector can be used for communication normally. Content of the Utility Model

[0004] The purpose of the utility model is to provide a radiation protection device for a fire alarm detector in a nuclear power plant to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A radiation protection device for a fire alarm detector in a nuclear power plant, including a base, a radiation protection housing is arranged on the top of the base, an installation frame is fixedly installed on the top of the radiation protection housing, a filter screen is fixedly installed on the top of the installation frame, and a detector housing is arranged inside the radiation protection housing, and the detector housing is located above the base; an installation and heat dissipation component is arranged above the base; the installation and heat dissipation component includes: a radiation protection heat dissipation part, the radiation protection heat dissipation part is arranged above the base; a disassembly and assembly part, the disassembly and assembly part is arranged above the base, and the disassembly and assembly part is located on both sides of the radiation protection heat dissipation part.

[0006] By setting a radiation protection housing, it can not only effectively isolate radiation, but also provide a safe operating environment for its internal components.

[0007] Preferably, the radiation protection and heat dissipation part includes: a lead sheet shielding layer, which is arranged on the inner wall of the radiation protection shell; mounting grooves, which are opened on the top of the base and there are two groups in total; a boron carbide inner protection plate is fixedly installed inside the mounting groove, and a sealing gasket is arranged above the boron carbide inner protection plate, and the sealing gasket is fixedly installed on the top of the radiation protection shell.

[0008] By providing a lead sheet shielding layer, which is closely attached to the inner wall of the radiation protection shell and has a good γ-ray shielding effect. The high density and high atomic number of lead enable it to effectively absorb and block the penetration of γ-rays, effectively blocking the penetration of radiation.

[0009] By providing mounting grooves, a boron carbide inner protection plate is fixedly installed in the grooves, enhancing the protection ability against neutrons. Boron carbide can absorb thermal neutrons, thereby reducing the damage of neutrons to the internal circuit of the detector and further enhancing the radiation protection ability. A sealing gasket is closely attached above the protection plate, ensuring the sealing of the shell.

[0010] Preferably, a motor is arranged above the sealing gasket, and the motor is fixedly installed on the top of the radiation protection shell and is located inside the installation frame. The output end of the motor is provided with a connecting rotating shaft, and the connecting rotating shaft movably penetrates the radiation protection shell and extends to the inside of the radiation protection shell.

[0011] Preferably, a fan blade is arranged at the bottom of the connecting rotating shaft, a sealing ring is sleeved on the outer wall of the connecting rotating shaft, and the sealing ring is located below the sealing gasket. Heat dissipation fins are arranged below the fan blade, and the heat dissipation fins are fixedly installed on the top of the base and are located on both sides of the detector shell.

[0012] By providing a motor, the fan blade is driven to rotate through the connecting rotating shaft to generate a strong air flow. In order to prevent radiation leakage, a sealing ring is specially arranged at the place where the rotating shaft penetrates the shell. The heat dissipation fins are densely arranged below the fan blade, effectively dissipating the heat into the air.

[0013] Preferably, the disassembly and assembly part includes: a clamping groove, which is opened on the outer surface of the radiation protection shell and movably penetrates the radiation protection shell and extends to the inside of the base; a T-shaped clamping block is arranged inside the clamping groove, and the clamping groove is adapted to the T-shaped clamping block. Threaded holes are opened at the top of the T-shaped clamping block and there are two groups in total. A clamping hole is arranged below the threaded hole, and the clamping hole is opened on the top of the base.

[0014] Preferably, an L-shaped mounting plate is arranged above the threaded hole, and a fixed clamping column is fixedly installed on the inner wall of the L-shaped mounting plate. The fixed clamping column passes through the threaded hole and extends to the inside of the clamping hole.

[0015] Preferably, a magnetic attraction block is fixedly installed on the inner wall of the L-shaped mounting plate, and the magnetic attraction block is attracted to the suction groove on the outer surface of the base. A rotation groove is formed in the top of the L-shaped mounting plate. A connecting pin shaft movably penetrates through the rotation groove, and an installation handle is sleeved on the outer wall of the connecting pin shaft, and the installation handle is adapted to the rotation groove.

[0016] By providing an L-shaped mounting plate, the fixed clamping post on the L-shaped mounting plate passes through the threaded hole and enters the clamping hole to achieve fixation. A magnetic attraction block is also installed on the mounting plate to enhance the stability of the installation. A rotation groove is provided on the mounting plate, and is connected to the installation handle through a connecting pin shaft, enabling the operator to easily rotate the handle to achieve quick disassembly and assembly.

[0017] The utility model provides a radiation protection device for a nuclear power plant fire alarm detector. It has the following beneficial effects:

[0018] (1) By providing a lead shielding layer, the utility model provides the first layer of radiation protection for the detector, and the inner boron carbide protection plate enhances the radiation protection ability. The sealing gasket ensures the sealing of the housing to prevent radiation leakage. Further, driven by a motor, its output end is connected to a rotating shaft to drive the fan blade to rotate. The rotation of the fan blade generates air flow, and the heat generated by the detector is quickly dissipated into the air through the heat sink. To maintain the sealing of the device, a sealing ring is sleeved on the outer wall of the rotating shaft, effectively preventing the intrusion of radiation and dust, achieving the effect of effectively protecting against radiation penetration and damaging the detector body.

[0019] (2) By providing a clamping groove, the cooperation of the clamping groove and the T-shaped clamping block enables the radiation protection housing to be stably installed on the base. The L-shaped mounting plate further strengthens the installation structure by passing the fixed clamping post through the threaded hole and into the clamping hole. The installation handle is connected to the rotation groove through a connecting pin shaft, enabling the operator to easily rotate the handle to achieve quick disassembly and assembly of the radiation protection housing, achieving the effect of facilitating the quick disassembly of the device for detecting and repairing the detector body. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a side view of the radiation protection structure of a radiation protection device for a nuclear power plant fire alarm detector of the utility model;

[0022] Figure 3 It is a top view of the detector structure of a radiation protection device for a nuclear power plant fire alarm detector of the utility model;

[0023] Figure 4 It is an exploded view of the installation part of a radiation protection device for a nuclear power plant fire alarm detector of the utility model.

[0024] In the figure: 1 base, 2 radiation-proof housing, 3 mounting frame, 4 filter screen, 5 detector housing, 6 installation heat dissipation component, 61 radiation-proof heat dissipation part, 611 lead sheet shielding layer, 612 installation groove, 613 boron carbide inner protection plate, 614 gasket, 615 motor, 616 connecting rotating shaft, 617 fan blade, 618 sealing ring, 619 heat sink, 62 disassembly and assembly part, 621 card slot, 622 T-shaped clamping block, 623 threaded hole, 624 card hole, 625 L-shaped mounting plate, 626 fixed clamping column, 627 magnetic attraction block, 628 rotating groove, 629 installation handle. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0026] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] Embodiment 1

[0028] A preferred embodiment of a radiation-proof device for a nuclear power plant fire alarm detector provided by the present invention is as Figures 1-4 shown: A radiation-proof device for a nuclear power plant fire alarm detector includes a base 1. A radiation-proof housing 2 is provided on the top of the base 1. A mounting frame 3 is fixedly installed on the top of the radiation-proof housing 2. A filter screen 4 is fixedly installed on the top of the mounting frame 3. A detector housing 5 is arranged inside the radiation-proof housing 2, and the detector housing 5 is located above the base 1; An installation heat dissipation component 6 is provided above the base 1; The installation heat dissipation component 6 includes: A radiation-proof heat dissipation part 61 is provided above the base 1; A disassembly and assembly part 62 is provided above the base 1, and the disassembly and assembly part 62 is located on both sides of the radiation-proof heat dissipation part 61.

[0029] By providing the radiation-proof housing 2, it can not only effectively isolate radiation but also provide a safe operating environment for its internal components.

[0030] The radiation-proof and heat-dissipating part 61 includes: a lead sheet shielding layer 611, which is arranged on the inner wall of the radiation-proof housing 2; mounting grooves 612, which are opened on the top of the base 1 and there are two groups in total;

[0031] A boron carbide inner protective plate 613 is fixedly installed inside the mounting groove 612. A sealing gasket 614 is arranged above the boron carbide inner protective plate 613, and the sealing gasket 614 is fixedly installed on the top of the radiation-proof housing 2.

[0032] By providing the lead sheet shielding layer 611, which closely adheres to the inner wall of the radiation-proof housing and has a good γ-ray shielding effect. The high density and high atomic number of lead enable it to effectively absorb and block the penetration of γ-rays, effectively blocking the penetration of radiation.

[0033] By providing the mounting groove 612, the boron carbide inner protective plate 613 is fixedly installed in the groove, enhancing the neutron protection ability. Boron carbide can absorb thermal neutrons, thereby reducing the damage of neutrons to the internal circuit of the detector and further enhancing the radiation-proof ability. The sealing gasket 614 is closely attached above the protective plate, ensuring the sealing of the housing.

[0034] A motor 615 is arranged above the sealing gasket 614, and the motor 615 is fixedly installed on the top of the radiation-proof housing 2 and is located inside the mounting frame 3. A connecting rotating shaft 616 is arranged at the output end of the motor 615, and the connecting rotating shaft 616 movably penetrates the radiation-proof housing 2 and extends to the inside of the radiation-proof housing 2.

[0035] A fan blade 617 is arranged at the bottom of the connecting rotating shaft 616. A sealing ring 618 is sleeved on the outer wall of the connecting rotating shaft 616, and the sealing ring 618 is located below the sealing gasket 614. Heat dissipation fins 619 are arranged below the fan blade 617, and the heat dissipation fins 619 are fixedly installed on the top of the base 1 and are located on both sides of the detector housing 5.

[0036] By providing the motor 615, the fan blade 617 is driven to rotate through the connecting rotating shaft 616 to generate a strong air flow. In order to prevent radiation leakage, a sealing ring 618 is specially arranged at the place where the rotating shaft penetrates the housing. The heat dissipation fins 619 are densely arranged below the fan blade, effectively dissipating the heat into the air.

[0037] Furthermore, in this embodiment, by providing the lead sheet shielding layer 611, the first layer of radiation protection is provided for the detector. The boron carbide inner protective plate 613 further enhances the radiation-proof ability, while the sealing gasket 614 ensures the sealing of the housing and prevents radiation leakage.

[0038] Further, driven by the motor 615, the output end of which is connected to the rotating shaft 616 to drive the fan blade 617 to rotate. The rotation of the fan blade generates an air flow, and the heat generated by the detector is quickly dissipated into the air through the heat sink 619. To maintain the tightness of the device, a sealing ring 618 is sleeved on the outer wall of the rotating shaft, effectively preventing the intrusion of radiation and dust.

[0039] Embodiment 2

[0040] Based on Embodiment 1, a preferred embodiment of the radiation-proof device for a nuclear power plant fire alarm detector provided by the present utility model is as Figures 1-4 shown: The disassembly and assembly part 62 includes: a clamping groove 621, which is opened on the outer surface of the radiation-proof housing 2 and movably penetrates through the radiation-proof housing 2 and extends into the inside of the base 1; a T-shaped clamping block 622 is arranged inside the clamping groove 621, and the clamping groove 621 is adapted to the T-shaped clamping block 622. Threaded holes 623 are opened at the top of the T-shaped clamping block 622, and there are two groups in total. A clamping hole 624 is arranged below the threaded hole 623, and the clamping hole 624 is opened at the top of the base 1.

[0041] An L-shaped mounting plate 625 is arranged above the threaded hole 623. A fixed clamping column 626 is fixedly installed on the inner wall of the L-shaped mounting plate 625, and the fixed clamping column 626 passes through the threaded hole 623 and extends into the clamping hole 624.

[0042] A magnetic attraction block 627 is fixedly installed on the inner wall of the L-shaped mounting plate 625, and the magnetic attraction block 627 is attracted to the suction groove on the outer surface of the base 1. A rotating groove 628 is opened at the top of the L-shaped mounting plate 625. A connecting pin shaft movably penetrates through the inside of the rotating groove 628, and an installation handle 629 is sleeved on the outer wall of the connecting pin shaft, and the installation handle 629 is adapted to the rotating groove 628.

[0043] Further, in this embodiment, by providing the clamping groove 621 and the cooperation of the clamping groove 621 and the T-shaped clamping block 622, the radiation-proof housing 2 can be stably installed on the base 1. The L-shaped mounting plate 625 further strengthens the installation structure by passing the fixed clamping column 626 through the threaded hole 623 and into the clamping hole 624. The addition of the magnetic attraction block 627 provides an additional fixing force to ensure that the mounting plate will not loosen due to vibration.

[0044] Further, the installation handle 629 is connected to the rotating groove 628 through the connecting pin shaft, enabling the operator to easily rotate the handle to achieve the quick disassembly and assembly of the radiation-proof housing.

[0045] In use, first, the detector housing 5 is safely placed inside the radiation-proof housing 2, which is made of radiation-proof material and can protect the detector from damage under extreme radiation conditions. The top of the radiation-proof housing 2 is equipped with a mounting frame 3 and a filter net 4. The filter net effectively blocks dust and tiny particles in the air, preventing them from entering the device interior, and also helps reduce the attachment of radiation particles. Further, the lead shielding layer 611 of the installed heat dissipation component 6 is closely attached to the inner wall of the radiation-proof housing 2, providing the first layer of radiation protection for the detector. The boron carbide inner protection plate 613 is embedded in the installation groove 612, further enhancing the radiation-proof ability, while the sealing gasket 614 ensures the airtightness of the housing and prevents radiation leakage. Further, it is realized by driving the motor 615. Its output end is connected to the rotating shaft 616 to drive the fan blade 617 to rotate. The rotation of the fan blade generates an air flow, and the heat generated by the detector is quickly dissipated into the air through the heat sink 619. To maintain the airtightness of the device, a sealing ring 618 is sleeved on the outer wall of the rotating shaft, effectively preventing the intrusion of radiation and dust. Further, the cooperation of the card slot 621 and the T-shaped block 622 enables the radiation-proof housing 2 to be stably installed on the base 1. The L-shaped mounting plate 625 passes through the threaded hole 623 through the fixing column 626 and enters the card hole 624, further strengthening the installation structure. The addition of the magnetic attraction block 627 provides an additional fixing force to ensure that the mounting plate will not loosen due to vibration. The mounting handle 629 is connected to the rotating groove 628 through a connecting pin shaft, enabling the operator to easily rotate the handle to achieve the quick disassembly and assembly of the radiation-proof housing.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nuclear power plant fire alarm detector radiation protection device, comprising a base station (1), characterized in that: A radiation-proof shell (2) is arranged on the top of the base (1); a mounting frame (3) is fixedly installed on the top of the radiation-proof shell (2); a filter screen (4) is fixedly installed on the top of the mounting frame (3); a detector shell (5) is arranged inside the radiation-proof shell (2), and the detector shell (5) is located above the base (1); Installing a heat dissipation component (6), wherein the heat dissipation component (6) is arranged above the base platform (1); The heat dissipation assembly (6) comprises: An anti-radiation heat dissipation portion (61), wherein the anti-radiation heat dissipation portion (61) is arranged above the base platform (1); The disassembly and assembly part (62) is arranged above the base (1), and the disassembly and assembly part (62) is located on both sides of the radiation protection and heat dissipation part (61).

2. A nuclear power plant fire alarm detector radiation protection device according to claim 1, characterized in that: The radiation protection and heat dissipation part (61) comprises: A lead shielding layer (611), wherein the lead shielding layer (611) is arranged on the inner wall of the radiation protection housing (2); Mounting grooves (612), the mounting grooves (612) are opened on the top of the base (1), and there are two groups of mounting grooves (612); A boron carbide inner layer protection plate (613) is fixedly installed inside the installation groove (612), a sealing gasket (614) is arranged above the boron carbide inner layer protection plate (613), and the sealing gasket (614) is fixedly installed on the top of the radiation protection shell (2).

3. A nuclear power plant fire alarm detector radiation protection device according to claim 2, characterized in that: A motor (615) is arranged above the sealing gasket (614), and the motor (615) is fixedly mounted on the top of the radiation-proof housing (2) and located inside the mounting frame (3). A connecting shaft (616) is arranged at the output end of the motor (615), and the connecting shaft (616) movably passes through the radiation-proof housing (2) and extends to the inside of the radiation-proof housing (2).

4. A nuclear power plant fire alarm detector radiation protection device according to claim 3, characterized in that: A fan blade (617) is provided at the bottom of the connecting shaft (616), a sealing ring (618) is sleeved on the outer wall of the connecting shaft (616), and the sealing ring (618) is located below the sealing gasket (614), and a heat sink (619) is provided below the fan blade (617), and the heat sink (619) is fixedly installed on the top of the base (1) and located on both sides of the detector housing (5).

5. A radiation protection device for a nuclear power plant fire alarm detector according to claim 1, characterized in that: The disassembly and assembly part (62) includes: A card slot (621), wherein the card slot (621) is formed on the outer surface of the radiation-proof housing (2), and movably penetrates the radiation-proof housing (2) and extends to the interior of the base platform (1); A T-shaped clamping block (622) is arranged inside the clamping slot (621), and the clamping slot (621) and the T-shaped clamping block (622) are matched, and threaded holes (623) are opened on the top of the T-shaped clamping block (622), and there are two groups of threaded holes (623) in total, and clamping holes (624) are arranged below the threaded holes (623), and the clamping holes (624) are opened on the top of the base (1).

6. A nuclear power plant fire alarm detector radiation protection device according to claim 5, characterized in that: An L-shaped mounting plate (625) is arranged above the threaded hole (623), and a fixed clamping column (626) is fixedly mounted on the inner wall of the L-shaped mounting plate (625), and the fixed clamping column (626) passes through the threaded hole (623) and extends to the inside of the clamping hole (624).

7. A nuclear power plant fire alarm detector radiation protection device according to claim 6, characterized in that: A magnetic block (627) is fixedly mounted on the inner wall of the L-shaped mounting plate (625), and the magnetic block (627) is attracted to the outer surface attraction groove of the base (1). A rotating groove (628) is provided on the top of the L-shaped mounting plate (625), and a connecting pin is movable through the interior of the rotating groove (628), and a mounting handle (629) is sleeved on the outer wall of the connecting pin, and the mounting handle (629) is compatible with the rotating groove (628).

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