Nuclear island estuary intelligent anti-explosion weakening and monitoring integrated system

Abstract

The invention discloses an intelligent explosion-proof weakening and monitoring integrated system for a nuclear island estuary, and relates to the technical field of explosion-proof safety. The pressure relief culverts are symmetrically and fixedly arranged on the two sides of the explosion-proof unit main body, and positioning holes are symmetrically formed in the positions, between the pressure relief culverts and the water outlet, of the explosion-proof unit main body; the explosion-proof mechanism execution unit is mounted in the positioning hole; the filter plates are fixedly arranged in the pressure relief culvert and the explosion-proof unit main body respectively; according to the invention, vibration is generated when a vibration iron wire is impacted by explosive waves, so that the distance between a second movable permanent magnet and a fixed annular permanent magnet is changed, and after a corresponding bipolar Hall effect sensor detects the change of a magnetic field, the explosive waves can be rapidly monitored; therefore, countermeasures can be taken within an extremely short time after the explosion occurs, the damage of the explosion to a nuclear island structure and equipment can be reduced, and the quick response speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof safety, and in particular to an integrated intelligent explosion-proof reduction and monitoring system for a nuclear island estuary. Background Art

[0002] Due to the energy conversion policy of our government in recent years, there has been a trend of vigorously developing nuclear power plants. Nuclear power plants are technology-intensive enterprises with certain atomic radiation. For the sake of people's livelihood safety, they must follow the concept of safe and stable operation. The safety hazards of nuclear power plants must give priority to the confidentiality, safety of the nuclear power plant's estuary and the protection measures after explosions caused by accidental intrusions, so that they can provide more guarantees for the safety of nuclear power plants.

[0003] At present, the protection measures for the nuclear island entrance to the sea are mainly focused on physical isolation and static protection, such as setting up thick concrete walls, metal barriers, etc. However, the above traditional methods have obvious limitations: on the one hand, they cannot effectively monitor long-distance or low-intensity explosion waves; on the other hand, once attacked, they lack dynamic adjustment capabilities and are difficult to respond in real time and reduce the impact of the explosion wave on the nuclear island.

[0004] Therefore, it is necessary to provide an integrated intelligent explosion-proof mitigation and monitoring system for the nuclear island estuary to solve the technical problems raised in the above-mentioned background technology. Summary of the invention

[0005] In view of the above problems, the present invention provides an integrated intelligent explosion-proof attenuation and monitoring system for the nuclear island estuary. Vibrating optical fiber monitoring fences are arranged in the explosion-proof unit body and the pressure relief culvert. When the vibrating iron wire is impacted by the explosion wave, it vibrates, thereby changing the distance between the second moving permanent magnet and the fixed annular permanent magnet. The corresponding bipolar Hall effect sensor detects the change in the magnetic field and feeds back to the central control unit, so that the explosion wave can be quickly monitored. By monitoring the explosion wave in real time, the system can provide accurate early warning information, take countermeasures in a very short time after the explosion, help reduce the damage to the nuclear island structure and equipment caused by the explosion, make corresponding decisions, and improve the rapid response speed.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an integrated system for intelligent explosion-proof weakening and monitoring at the nuclear island estuary, comprising:

[0007] The explosion-proof unit body has a water inlet at one end and a water outlet at the other end;

[0008] Pressure relief culverts are symmetrically and fixedly arranged on both sides of the explosion-proof unit body, the pressure relief culverts are connected to the explosion-proof unit body, and positioning holes are symmetrically opened on the explosion-proof unit body between the pressure relief culvert and the water outlet;

[0009] An explosion-proof mechanism execution unit is installed in the positioning hole, and the explosion-proof mechanism execution unit is connected to the explosion-proof mechanism control unit;

[0010] filter plates, which are respectively fixedly arranged in the pressure relief culvert and the explosion-proof unit body; and

[0011] The vibrating optical fiber monitoring fences are respectively fixedly arranged between the filter plate in the pressure relief culvert and the connection position between the pressure relief culvert and the explosion-proof unit body, and between the filter plate in the explosion-proof unit body and the connection position between the pressure relief culvert and the explosion-proof unit body, and the vibrating optical fiber monitoring fences are connected to the explosion-proof mechanism control unit.

[0012] In a possible implementation, a redundant reserved manual direct start mechanism control unit is provided on the explosion-proof mechanism control unit.

[0013] In a possible implementation manner, the explosion-proof mechanism control unit is connected to a central control unit.

[0014] In a possible implementation, the water outlets are all connected to the nuclear island, and water pumps are installed at the connected positions.

[0015] In a possible implementation, the explosion-proof mechanism execution unit includes:

[0016] A magnet shielding shell is respectively installed in the positioning holes and fixed to the explosion-proof unit body, a T-shaped slot is provided inside the magnet shielding shell near the central axis of the explosion-proof unit body, the T-shaped slot is connected to the interior of the explosion-proof unit body through the positioning holes, and an electromagnet is fixedly provided in the T-shaped slot away from the explosion-proof unit body;

[0017] The first moving permanent magnet is configured as two, and both are limitedly slidably arranged in the T-shaped groove, and a first rotating pin shaft is rotatably arranged on the first moving permanent magnet close to the explosion-proof unit body, and a hinge arm is rotatably arranged on the first rotating pin shaft, and a second rotating pin shaft is rotatably arranged in the hinge arm away from the first rotating pin shaft, and the hinge arms are rotatably arranged with the explosion-proof door through the second rotating pin shaft; and

[0018] The anchor blocks are configured into two and are respectively fixedly arranged inside the explosion-proof unit body between the positioning hole and the pressure relief culvert by anchor bolts, and the explosion-proof door is hingedly arranged on each anchor block, and the explosion-proof door is used for connecting and closing the water inlet and the water outlet.

[0019] In a possible implementation, the interior of the explosion-proof door is provided with a fire-proof perlite surface, and its outer layer is made of metal. A hinge pin hole is provided at the position where the explosion-proof door is hinged to the hinge arm, and a hinge shaft pin hole is provided at the position where the explosion-proof door is hinged to the anchor block.

[0020] In a possible implementation, the vibrating optical fiber monitoring fence includes:

[0021] An upper limit electromagnetic shielding shell is fixedly arranged in the explosion-proof unit body and the pressure relief culvert respectively;

[0022] A lower limit electromagnetic shielding shell, which is respectively arranged corresponding to the upper limit electromagnetic shielding shell fixedly arranged in the explosion-proof unit body and the pressure relief culvert; and

[0023] The vibrating iron wire is configured into multiple pieces, both ends of which are fixedly provided with second moving permanent magnets, the second moving permanent magnets at one end are limitedly slidably set in the upper limit electromagnetic shielding shell, and the second moving permanent magnets at the other end are limitedly slidably set in the lower limit electromagnetic shielding shell, and fixed ring-shaped permanent magnets are fixedly provided at positions corresponding to the second moving permanent magnets in the upper limit electromagnetic shielding shell and the lower limit electromagnetic shielding shell, and bipolar Hall effect sensors fixedly provided in the upper limit electromagnetic shielding shell and the lower limit electromagnetic shielding shell are provided on the inner sides of the fixed ring-shaped permanent magnets.

[0024] In a possible implementation, the bipolar Hall effect sensors are all connected to the central control unit.

[0025] In a possible implementation, a plurality of upper T-shaped limit grooves are evenly formed at one end of the upper limit electromagnetic shielding shell away from the explosion-proof unit body, and a plurality of lower T-shaped limit grooves are evenly formed at one end of the lower limit electromagnetic shielding shell away from the explosion-proof unit body. The upper T-shaped limit grooves are arranged corresponding to the lower T-shaped limit grooves, and the number of the upper T-shaped limit grooves and the lower T-shaped limit grooves are equal to the number of the vibration wires.

[0026] In a possible implementation, the fixed annular permanent magnet is fixedly disposed inside the upper T-shaped limit groove body and the lower T-shaped limit groove body near the explosion-proof unit body, and the second moving permanent magnet is limitedly and slidably disposed inside the upper T-shaped limit groove body and the lower T-shaped limit groove body.

[0027] Compared with the prior art, the present invention provides an integrated intelligent explosion-proof mitigation and monitoring system for a nuclear island estuary, which has the following beneficial effects:

[0028] 1. The present invention provides a vibration optical fiber monitoring fence in both the explosion-proof unit body and the pressure relief culvert. When the vibration iron wire is impacted by the explosion wave, it vibrates, thereby changing the distance between the second moving permanent magnet and the fixed annular permanent magnet. The corresponding bipolar Hall effect sensor detects the change in the magnetic field and feeds back to the central control unit, thereby being able to quickly monitor the explosion wave. By real-time monitoring of the explosion wave, the system can provide accurate early warning information, take countermeasures in a very short time after the explosion, help reduce the damage to the nuclear island structure and equipment caused by the explosion, make corresponding decisions, and improve the rapid response speed.

[0029] 2. After the vibrating optical fiber monitoring fence of the present invention detects the explosion wave, the central control unit feeds back the explosion-proof mechanism control unit to control the explosion-proof mechanism execution unit to start, so that the explosion-proof door quickly closes the water inlet and outlet of the explosion-proof unit body, and the explosion wave is decompressed along the water inlet and the pressure relief culvert, and the potential destructive path is cut off in time through the dynamic protection mechanism, thereby effectively preventing the external shock wave and possible accompanying harmful substances from entering the interior of the nuclear island, greatly reducing the potential harm of the explosion wave to the structure and operation of the nuclear island; and after the vibrating optical fiber monitoring fence fails to detect the explosion wave subsequently, the central control unit feeds back the explosion-proof mechanism control unit to control the explosion-proof mechanism execution unit, so that the explosion-proof door returns to the initial state, and the water inlet and outlet of the explosion-proof unit body are connected, to ensure normal water circulation and maintain the normal operation of the nuclear island. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention.

[0031] Figure 1 It is a schematic diagram of the overall structure of an intelligent explosion-proof weakening and monitoring integrated system for a nuclear island estuary;

[0032] Figure 2 It is a schematic diagram of the flow of water in the explosion-proof unit body and the pressure relief culvert in an integrated system of intelligent explosion-proof attenuation and monitoring at the nuclear island estuary;

[0033] Figure 3 It is a structural schematic diagram of an explosion-proof mechanism execution unit in an integrated system of intelligent explosion-proof mitigation and monitoring at the nuclear island estuary;

[0034] Figure 4It is a schematic diagram of the connection structure between the explosion-proof mechanism execution unit and the explosion-proof mechanism control unit in an integrated system of intelligent explosion-proof reduction and monitoring at the nuclear island estuary;

[0035] Figure 5 It is a schematic diagram of the main structure of a vibration optical fiber monitoring fence in an integrated system of intelligent explosion-proof reduction and monitoring at the entrance of a nuclear island;

[0036] Figure 6 It is a schematic diagram of the top view structure of a vibration optical fiber monitoring fence in an integrated system of intelligent explosion-proof reduction and monitoring at the nuclear island estuary;

[0037] Figure 7 It is a schematic diagram of the internal cross-sectional structure of a vibration optical fiber monitoring fence in an integrated system of intelligent explosion-proof reduction and monitoring at the nuclear island estuary;

[0038] Figure 8 for Figure 7 A schematic diagram of the enlarged structure at A in the middle;

[0039] Fig. 9 It is a schematic diagram of the flow of water in an integrated system of intelligent explosion-proof attenuation and monitoring at the sea entrance of a nuclear island when the water inlet and the water outlet of the explosion-proof unit are connected;

[0040] Fig.10 It is a schematic diagram of the flow of water in an integrated system of intelligent explosion-proof attenuation and monitoring at the sea entrance of a nuclear island when the water inlet and the water outlet of the explosion-proof unit are closed;

[0041] Fig.11 It is a motion diagram of the execution unit of the explosion-proof mechanism in the integrated system of intelligent explosion-proof reduction and monitoring at the nuclear island estuary;

[0042] Fig.12 for Fig.11 Force diagram of point P in the middle;

[0043] Fig.13 for Fig.11 Force diagram of point A in the middle;

[0044] Figure numerals: 1. explosion-proof unit body; 2. water inlet; 3. water outlet; 4. pressure relief culvert; 5. positioning hole; 6. explosion-proof mechanism execution unit; 7. filter plate; 8. vibration optical fiber monitoring fence; 9. explosion-proof mechanism control unit; 10. redundant reserved manual direct start mechanism control unit; 61. magnet shielding shell; 62. electromagnet; 63. first moving permanent magnet; 64. first rotating pin shaft; 65. hinge arm; 66. second rotating pin shaft; 67. explosion-proof door; 68. anchor block; 69. anchor bolt; 81. upper limit electromagnetic shielding shell; 82. lower limit electromagnetic shielding shell; 83. vibration wire; 84. second moving permanent magnet; 85. fixed annular permanent magnet; 86. bipolar Hall effect sensor; 811. upper T-shaped limit slot; 821. lower T-shaped limit slot. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0047] See also Figure 1-Figure 13 The embodiment of the present invention provides an integrated system for intelligent explosion-proof weakening and monitoring at the entrance of a nuclear island, which includes:

[0048] The explosion-proof unit body 1 has a water inlet 2 at one end and a water outlet 3 at the other end;

[0049] The pressure relief culverts 4 are symmetrically fixedly arranged on both sides of the explosion-proof unit body 1, the pressure relief culverts 4 are connected to the explosion-proof unit body 1, and positioning holes 5 are symmetrically opened on the explosion-proof unit body 1 between the pressure relief culverts 4 and the water outlet 3;

[0050] An explosion-proof mechanism execution unit 6 is installed in the positioning hole 5, and the explosion-proof mechanism execution unit 6 is connected to an explosion-proof mechanism control unit 9;

[0051] A filter plate 7, which is fixedly disposed in the pressure relief culvert 4 and the explosion-proof unit body 1 respectively; and

[0052] The vibrating optical fiber monitoring fence 8 is respectively fixedly arranged between the filter plate 7 in the pressure relief culvert 4 and the connection position between the pressure relief culvert 4 and the explosion-proof unit main body 1, and between the filter plate 7 in the explosion-proof unit main body 1 and the connection position between the pressure relief culvert 4 and the explosion-proof unit main body 1, and the vibrating optical fiber monitoring fence 8 is connected to the explosion-proof mechanism control unit 9.

[0053] Based on the above technical scheme, the explosion-proof unit body 1 and the pressure relief culvert 4 are prefabricated, and the explosion-proof unit body 1 is installed at the sea entrance of the nuclear island, the explosion-proof mechanism execution unit 6 is installed in the explosion-proof unit body 1, and the vibration optical fiber monitoring fence 8 and the filter plate 7 are installed in the explosion-proof unit body 1 and the pressure relief culvert 4. After the installation work is completed, the vibration optical fiber monitoring fence 8 is used to monitor the sea entrance in real time; when the vibration optical fiber monitoring fence 8 detects the explosion wave, the explosion-proof mechanism execution unit 6 is controlled to quickly block the water outlet 3, and the explosion wave is decompressed along the water inlet 2 and the pressure relief culvert 4; when the vibration optical fiber monitoring fence 8 does not detect the explosion wave subsequently, the explosion-proof mechanism execution unit 6 is controlled to restore the water inlet 2 and the water outlet 3 to the state of being connected, and cooling water is normally supplied to the nuclear island.

[0054] On the basis of the above technical solution, by arranging a vibration optical fiber monitoring fence 8 in both the explosion-proof unit body 1 and the pressure relief culvert 4, the vibration optical fiber monitoring fence 8 can quickly monitor the explosion wave. By real-time monitoring of the explosion wave, the system can provide accurate early warning information and take countermeasures in a very short time after the explosion, which helps to reduce the damage to the nuclear island structure and equipment caused by the explosion, make corresponding decisions, and improve the rapid response speed.

[0055] In a possible implementation, the explosion-proof mechanism control unit 9 is provided with a redundant reserved manual direct start mechanism control unit 10, and the redundant reserved manual direct start mechanism control unit 10 can manually restart the explosion-proof mechanism execution unit 6 in an emergency.

[0056] In a possible implementation, the explosion-proof mechanism control unit 9 is connected to a central control unit, which can monitor the explosion wave based on the vibration fiber optic monitoring fence 8 and provide feedback to the explosion-proof mechanism control unit 9, which in turn controls the movement state of the explosion-proof mechanism execution unit 6.

[0057] In a possible implementation manner, the water outlets 3 are all connected to the nuclear island, and water pumps are installed at the connected positions.

[0058] It needs to be explained that the water pump motor is equipped with a current collection and detection transformer, which is connected to the central control unit. There is a stall current threshold in the central control unit. Due to the impact of the waves, the explosion-proof mechanism execution unit 6 is closed, closing the water inlet 2 channel. After the channel is closed, the water inlet 2 is blocked, the water pump motor is stalled, and the current rises sharply. After the current collection and detection transformer detects the current change, when it exceeds the internally set stall current threshold, that is, the water pump is stalled, and the blocked position of the water inlet 2 is further inferred. That is to say, after the explosion wave impacts the explosion-proof mechanism execution unit 6, the explosion-proof mechanism execution unit 6 at this position is closed, so that the specific position of the explosion-proof unit body 1 where the explosion occurs can be quickly located.

[0059] In a possible implementation, the explosion-proof mechanism execution unit 6 includes:

[0060] The magnet shielding shell 61 is respectively installed in the positioning hole 5 and fixed to the explosion-proof unit body 1. The interior of the magnet shielding shell 61 near the central axis of the explosion-proof unit body 1 is provided with a T-shaped slot, and the T-shaped slot is connected to the interior of the explosion-proof unit body 1 through the positioning hole 5, and the T-shaped slot away from the explosion-proof unit body 1 is fixed with an electromagnet 62;

[0061] The first moving permanent magnet 63 is configured as two, and both are limitedly slidably arranged in the T-shaped groove. A first rotating pin 64 is rotatably arranged on the first moving permanent magnet 63 close to the explosion-proof unit body 1, and a hinge arm 65 is rotatably arranged on the first rotating pin 64. A second rotating pin 66 is rotatably arranged in the hinge arm 65 away from the first rotating pin 64, and the hinge arm 65 is rotatably arranged with the explosion-proof door 67 through the second rotating pin 66; and

[0062] The anchor blocks 68 are configured as two, which are fixed inside the explosion-proof unit body 1 between the positioning hole 5 and the pressure relief culvert 4 by anchor bolts 69 respectively, and the explosion-proof door 67 is hingedly provided on the anchor blocks 68, and the explosion-proof door 67 is used for the connection and closing of the water inlet 2 and the water outlet 3.

[0063] Through the above technical scheme, when the vibrating optical fiber monitoring fence 8 detects the explosion wave, the central control unit feeds back to the explosion-proof mechanism control unit 9 to control the electromagnet 62 to be energized, and the first moving permanent magnet 63 moves to the side close to the electromagnet 62. At the same time, the explosion-proof door 67 quickly blocks the water outlet 3 under the impact of the water flow, and the explosion wave is decompressed along the water inlet 2 and the pressure relief culvert 4; when the vibrating optical fiber monitoring fence 8 does not subsequently detect the explosion wave, the central control unit feeds back to the explosion-proof mechanism control unit 9 to control the electromagnet 62 to be energized, and the first moving permanent magnet 63 moves to the side away from the electromagnet 62. At the same time, the explosion-proof door 67 moves to a state parallel to the interior of the explosion-proof unit body 1, and the water inlet 2 and the water outlet 3 are connected, and cooling water is normally supplied to the nuclear island.

[0064] It should be noted that if Figure 11-13 As shown, the motion working mode of the explosion-proof mechanism execution unit 6 is: in the initial state, point P is in a stationary state under the control of the electromagnet 62, that is, in a closed state, and an angle of 45° is formed between the explosion-proof door 67 between B and A and the pipe wall of the explosion-proof unit body 1. As point P moves upward, since point P is connected to the first moving permanent magnet 63 and there is no degree of freedom of rotation, the force analysis of point P is as follows: Fig.11 and Fig.12 As shown, point P has no displacement along the wall of the explosion-proof unit body 1 and is in a stressed state, while it has displacement in the center direction of the wall of the explosion-proof unit body 1 and is in a stress-free state. Since A and P are on the same hinge arm 65, the stress and displacement states of point A are just opposite, as shown in FIG. Fig.11 and Fig.13 As shown, when point P moves to point P1, point A is just at point A1, then points P1 and A are on the same parallel straight line with the tube wall of the explosion-proof unit main body 1. At this time, the force that the hinge arm 65 can withstand is the largest, and an angle is formed between the explosion-proof door 67 generated between B and A1 and the tube wall of the explosion-proof unit main body 1. This angle is the maximum angle of the explosion-proof door 67 when it is opened. At this time, the state of the explosion-proof door 67 is the flow state.

[0065] In a possible embodiment, the interior of the explosion-proof door 67 is provided with a fire-proof perlite surface, and the outer layer thereof is made of metal material, so as to effectively resist the shock wave generated by the explosion and prevent the door body from deforming or breaking. A hinge pin hole is provided at the position where the explosion-proof door 67 is hinged to the hinge arm 65, and a hinge-type shaft pin hole is provided at the position where the explosion-proof door 67 is hinged to the anchor block 68.

[0066] In a possible implementation, the vibration optical fiber monitoring fence 8 includes:

[0067] An upper limit electromagnetic shielding shell 81 is fixedly disposed in the explosion-proof unit body 1 and the pressure relief culvert 4 respectively;

[0068] A lower limit electromagnetic shielding shell 82, which is respectively arranged corresponding to the upper limit electromagnetic shielding shell 81 fixedly arranged in the explosion-proof unit body 1 and the pressure relief culvert 4; and

[0069] The vibrating wire 83 is configured as a plurality of wires, both ends of which are fixedly provided with a second moving permanent magnet 84, the second moving permanent magnet 84 at one end is limitedly slidably set in the upper limit electromagnetic shielding shell 81, and the second moving permanent magnet 84 at the other end is limitedly slidably set in the lower limit electromagnetic shielding shell 82, and fixed annular permanent magnets 85 are fixedly provided at positions corresponding to the second moving permanent magnet 84 in the upper limit electromagnetic shielding shell 81 and the lower limit electromagnetic shielding shell 82, and the inner sides of the fixed annular permanent magnets 85 are provided with bipolar Hall effect sensors 86 respectively fixedly provided in the upper limit electromagnetic shielding shell 81 and the lower limit electromagnetic shielding shell 82.

[0070] It should be supplemented that the vibrating optical fiber monitoring fence 8 is installed in the explosion-proof unit body 1 and the pressure relief culvert 4. At the beginning, the second moving permanent magnet 84 and the fixed annular permanent magnet 85 are in an adsorption state. After starting the water pump, the vibrating iron wire 83 is under the impact of normal water flow, and the distance between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 is maintained within a certain range. The magnetic field data detected by the bipolar Hall effect sensor 86 at this position is used as the starting comparison basic data, and then the vibrating optical fiber monitoring fence 8 is used to perform real-time monitoring of the estuary.

[0071] In one possible implementation, the bipolar Hall effect sensors 86 are all connected to the central control unit.

[0072] By adopting the above technical scheme, when the vibrating optical fiber monitoring fence 8 detects the explosion wave, that is, when the vibrating iron wire 83 vibrates, the distance between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 changes, and the bipolar Hall effect sensor 86 transmits the detected magnetic field data to the central control unit, which feeds back to the explosion-proof mechanism control unit 9 to control the explosion-proof door 67 to block the water outlet 3; when the vibrating optical fiber monitoring fence 8 does not subsequently detect the explosion wave, the distance between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 is restored, and the data detected by the bipolar Hall effect sensor 86 is restored to the initial comparison basic data, and the bipolar Hall effect sensor 86 transmits the detected magnetic field data to the central control unit, which feeds back to the explosion-proof mechanism control unit 9 to control the explosion-proof door 67 to open, and the water inlet 2 and the water outlet 3 are connected.

[0073] In a possible embodiment, a plurality of upper T-shaped limit grooves 811 are evenly opened at one end of the upper limit electromagnetic shielding shell 81 away from the explosion-proof unit main body 1, and a plurality of lower T-shaped limit grooves 821 are evenly opened at one end of the lower limit electromagnetic shielding shell 82 away from the explosion-proof unit main body 1, the upper T-shaped limit grooves 811 and the lower T-shaped limit grooves 821 are arranged correspondingly, and the number of the upper T-shaped limit grooves 811 and the lower T-shaped limit grooves 821 are equal to the number of the vibration wires 83.

[0074] In a possible implementation, the fixed annular permanent magnet 85 is fixedly disposed inside the upper T-shaped limit groove 811 and the lower T-shaped limit groove 821 near the explosion-proof unit body 1, and the second moving permanent magnet 84 is slidingly disposed inside the upper T-shaped limit groove 811 and the lower T-shaped limit groove 821.

[0075] Through the above technical solution, when the explosion wave hits the vibrating wire 83, the second moving permanent magnet 84 moves along the corresponding upper T-shaped limit slot 811 and the lower T-shaped limit slot 821, so that the distance between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 changes, and the corresponding bipolar Hall effect sensor 86 detects the change in magnetic field strength, thereby being able to quickly monitor the explosion wave.

[0076] On the basis of the above technical solution, after the vibrating optical fiber monitoring fence 8 detects the explosion wave, the central control unit feeds back the explosion-proof mechanism control unit 9 to control the explosion-proof mechanism execution unit 6 to start, so that the explosion-proof door 67 quickly closes the water inlet 2 and the water outlet 3 of the explosion-proof unit body 1, and the explosion wave is decompressed along the water inlet 2 and the pressure relief culvert 4, and the potential destructive path is cut off in time through the dynamic protection mechanism, thereby effectively preventing the external shock wave and the possible accompanying harmful substances from entering the interior of the nuclear island, greatly reducing the potential harm of the explosion wave to the structure and operation of the nuclear island; and after the vibrating optical fiber monitoring fence 8 fails to detect the explosion wave subsequently, the central control unit feeds back the explosion-proof mechanism control unit 9 to control the explosion-proof mechanism execution unit 6, so that the explosion-proof door 67 is restored to the initial state, and the water inlet 2 and the water outlet 3 of the explosion-proof unit body 1 are connected, to ensure normal water circulation and maintain the normal operation of the nuclear island.

[0077] In the specific implementation, the explosion-proof unit body 1 and the pressure relief culvert 4 are prefabricated, and the explosion-proof unit body 1 is installed at the sea entrance of the nuclear island, the explosion-proof mechanism execution unit 6 is installed in the explosion-proof unit body 1, and the vibration optical fiber monitoring fence 8 and the filter plate 7 are installed in the explosion-proof unit body 1 and the pressure relief culvert 4. After the installation work is completed, the water pump is started, and the vibration wire 83 is under the impact of normal water flow. The spacing between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 is maintained within a certain range, and the magnetic field data detected by the bipolar Hall effect sensor 86 at this position is used as the starting comparison basic data, and then the vibration optical fiber monitoring fence 8 is used to monitor the sea entrance in real time;

[0078] When the vibrating optical fiber monitoring fence 8 detects the explosion wave, that is, when the vibrating iron wire 83 vibrates, the distance between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 changes, and the bipolar Hall effect sensor 86 transmits the detected magnetic field data to the central control unit, which feeds back to the explosion-proof mechanism control unit 9 to control the electromagnet 62 to be energized, and the first moving permanent magnet 63 moves to the side close to the electromagnet 62. At the same time, the explosion-proof door 67 quickly blocks the water outlet 3 under the impact of the water flow, and the explosion wave is decompressed along the water inlet 2 and the pressure relief culvert 4; when the vibrating optical fiber monitoring fence 8 subsequently When no explosion wave is detected, the distance between the second moving permanent magnet 84 and the fixed annular permanent magnet 85 is restored, and the data detected by the bipolar Hall effect sensor 86 is restored to the initial comparison basic data. The bipolar Hall effect sensor 86 transmits the detected magnetic field data to the central control unit, and the central control unit feeds back to the explosion-proof mechanism control unit 9 to control the electromagnet 62 to be energized. The first moving permanent magnet 63 moves to the side away from the electromagnet 62. At the same time, the explosion-proof door 67 moves to a state parallel to the interior of the explosion-proof unit body 1, and the water inlet 2 and the water outlet 3 are connected, and cooling water is supplied to the nuclear island normally.

[0079] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent explosion-proof weakening and monitoring integrated system for a nuclear island estuary, characterized in that: include: An explosion-proof unit body (1) is provided with a water inlet (2) at one end and a water outlet (3) at the other end; The pressure relief culverts (4) are symmetrically fixedly arranged on both sides of the explosion-proof unit body (1); the pressure relief culverts (4) are connected to the explosion-proof unit body (1); and positioning holes (5) are symmetrically opened on the explosion-proof unit body (1) between the pressure relief culverts (4) and the water outlet (3); An explosion-proof mechanism execution unit (6) is installed in the positioning hole (5), and the explosion-proof mechanism execution unit (6) is connected to an explosion-proof mechanism control unit (9); A filter plate (7) is fixedly disposed in the pressure relief culvert (4) and the explosion-proof unit body (1), respectively; and The vibrating optical fiber monitoring fence (8) is respectively fixedly arranged between the filter plate (7) located in the pressure relief culvert (4) and the connection position between the pressure relief culvert (4) and the explosion-proof unit body (1), and between the filter plate (7) located in the explosion-proof unit body (1) and the connection position between the pressure relief culvert (4) and the explosion-proof unit body (1), and the vibrating optical fiber monitoring fence (8) is connected to the explosion-proof mechanism control unit (9).

2. According to claim 1, a nuclear island estuary intelligent explosion-proof weakening and monitoring integrated system is characterized by: The explosion-proof mechanism control unit (9) is provided with a redundant reserved manual direct-start mechanism control unit (10).

3. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 1 is characterized in that: The explosion-proof mechanism control unit (9) is connected to the central control unit.

4. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 1 is characterized in that: The water outlets (3) are all connected to the nuclear island, and water pumps are installed at the connected positions.

5. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 1 is characterized in that: The explosion-proof mechanism execution unit (6) comprises: A magnet shielding shell (61) is respectively installed in the positioning hole (5) and fixedly arranged with the explosion-proof unit body (1); a T-shaped slot is provided inside the magnet shielding shell (61) near the central axis of the explosion-proof unit body (1); the T-shaped slot is connected to the interior of the explosion-proof unit body (1) through the positioning hole (5); and an electromagnet (62) is fixedly arranged in the T-shaped slot away from the explosion-proof unit body (1); The first moving permanent magnet (63) is configured as two, and both are limitedly slidably arranged in the T-shaped groove, and a first rotating pin shaft (64) is rotatably arranged on the first moving permanent magnet (63) close to the explosion-proof unit body (1), and a hinge arm (65) is rotatably arranged on the first rotating pin shaft (64), and a second rotating pin shaft (66) is rotatably arranged in the hinge arm (65) away from the first rotating pin shaft (64), and the hinge arm (65) is rotatably arranged with the explosion-proof door (67) through the second rotating pin shaft (66); and The anchor blocks (68) are configured as two and are fixedly arranged inside the explosion-proof unit body (1) between the positioning hole (5) and the pressure relief culvert (4) by anchor bolts (69), and the explosion-proof door (67) is hingedly arranged on each of the anchor blocks (68). The explosion-proof door (67) is used for connecting and closing the water inlet (2) and the water outlet (3).

6. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 5 is characterized in that: The explosion-proof door (67) is provided with a fireproof perlite surface inside and its outer layer is made of metal material. A hinge pin hole is provided at the position where the explosion-proof door (67) is hinged to the hinge arm (65), and a hinge shaft pin hole is provided at the position where the explosion-proof door (67) is hinged to the anchor block (68).

7. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 3 is characterized by: The vibration optical fiber monitoring fence (8) comprises: An upper limit electromagnetic shielding shell (81) is fixedly arranged in the explosion-proof unit body (1) and the pressure relief culvert (4) respectively; A lower limit electromagnetic shielding shell (82) is respectively arranged to correspond to the upper limit electromagnetic shielding shell (81) fixedly arranged in the explosion-proof unit body (1) and the pressure relief culvert (4); and The vibrating iron wire (83) is configured as a plurality of wires, both ends of which are fixedly provided with a second moving permanent magnet (84), the second moving permanent magnet (84) at one end is limitedly slidably provided in the upper limit electromagnetic shielding shell (81), and the second moving permanent magnet (84) at the other end is limitedly slidably provided in the lower limit electromagnetic shielding shell (82), and fixed annular permanent magnets (85) are fixedly provided at positions corresponding to the second moving permanent magnets (84) in the upper limit electromagnetic shielding shell (81) and the lower limit electromagnetic shielding shell (82), and the inner sides of the fixed annular permanent magnets (85) are provided with bipolar Hall effect sensors (86) respectively fixedly provided in the upper limit electromagnetic shielding shell (81) and the lower limit electromagnetic shielding shell (82).

8. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 7 is characterized in that: The bipolar Hall effect sensors (86) are all connected to the central control unit.

9. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 7 is characterized by: The upper limit electromagnetic shielding shell (81) is evenly provided with a plurality of upper T-shaped limit slots (811) at one end away from the explosion-proof unit body (1), and the lower limit electromagnetic shielding shell (82) is evenly provided with a plurality of lower T-shaped limit slots (821) at one end away from the explosion-proof unit body (1). The upper T-shaped limit slots (811) and the lower T-shaped limit slots (821) are arranged correspondingly, and the number of the upper T-shaped limit slots (811) and the number of the lower T-shaped limit slots (821) are both equal to the number of the vibration wires (83).

10. The integrated intelligent explosion-proof weakening and monitoring system for a nuclear island estuary according to claim 9 is characterized in that: The fixed annular permanent magnet (85) is fixedly arranged inside the upper T-shaped limit groove body (811) and the lower T-shaped limit groove body (821) close to the explosion-proof unit body (1), and the second moving permanent magnet (84) is slidingly arranged inside the upper T-shaped limit groove body (811) and the lower T-shaped limit groove body (821).

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