Automatic opening and closing system and method for nuclear power fire door

Abstract

This invention relates to the field of fire door technology and discloses an automatic opening and closing system and method for nuclear power plant fire doors, solving the problems of current nuclear power plant fire doors on the market. The system includes an outer door frame, with a hinge movably connected to one side of the outer door frame, and a fire door body movably connected to one side of the hinge. A coolant tank, which is in contact with the fire door body, lowers the surface temperature of the fire door body, reducing the risk of rapid temperature rise during a fire. A circulation mechanism continuously delivers coolant at a lower temperature from the coolant tank to the other side of the fire door body for further cooling, improving the cooling effect. Spraying liquid from sprinkler heads allows for fire control on one side of the fire door body, enhancing its protective properties. Remotely opening the fire door continuously improves the ease of escape for multiple personnel, and the fire door can be remotely activated when personnel are exhausted, increasing the escape speed.

Description

Technical Field

[0001] This invention belongs to the field of fire door technology, specifically an automatic opening and closing system and method for nuclear power plant fire doors. Background Technology

[0002] Nuclear power plant fire doors are doors used in nuclear power plants that can maintain their fire resistance and insulation for a certain period of time in the event of a fire. These doors maintain their structural integrity during a fire, preventing the spread of fire and providing time for safe evacuation and firefighting. The design of nuclear power plant fire doors follows the principle of defense in depth, aiming to prevent fires from occurring, quickly detect and alarm on fires that have already occurred, and prevent the spread of fires that have not yet been extinguished, thus minimizing the impact of fires on the nuclear power plant.

[0003] In the prior art, patent publication number "CN1 15478766A" discloses a "steel nuclear power plant protective door and its manufacturing method"; it includes an outer door frame and a door body. A handle is welded to the front end of the door body. Slots are formed around the inner circumference of the outer door frame and the outer circumference of the door body. A first airbag assembly is placed in the slot of the outer door frame, and a second airbag assembly is placed in the slot of the door body. Both the first and second airbag assemblies are rectangular. The steel nuclear power plant protective door and its manufacturing method of this invention feature combined airbags that fit tightly together, providing a wide coverage area and replacing traditional sealing strips, resulting in better sealing and adjustability. The addition of an explosion-proof mesh further enhances the safety performance of the steel nuclear power plant protective door, extends its service life, and allows for automated installation, resulting in high efficiency, time and labor savings, applicability to various working conditions, and a better future application prospect.

[0004] The aforementioned "steel nuclear power plant protective door and its manufacturing method" still has some drawbacks. For example, when a fire occurs in the existing nuclear power plant fire doors, if the flames spread to one side of the fire door and continue to burn, the temperature of the fire door will rise rapidly. The high temperature generated can easily cause the fire door to deform. At the same time, after the flames spread to the surface of the fire door, the surface temperature of the fire door will continue to rise. During the escape process, the continuously rising temperature of the fire door will make it difficult for the escapers to access it, causing injury to the escapers. In addition, the fire door is heavy and the high temperature of the fire door is difficult to open, which affects the escape time of the escapers.

[0005] To address these issues, an automatic opening and closing system for fire doors in nuclear power plants is proposed. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides an automatic opening and closing system and method for nuclear power plant fire doors, which effectively solves the problems that fire doors become difficult to access when the temperature continues to rise after a fire, and that fire doors are heavy and difficult to open at high temperatures.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic opening and closing system for fireproof doors in nuclear power plants, comprising an outer door frame, a hinge movably connected to one side of the outer door frame, a fireproof door body movably connected to one side of the hinge, a door closer movably connected to one side of the fireproof door body, a door rod fixedly connected to one side of the fireproof door body, a heat dissipation mechanism provided on one side of the fireproof door body, the heat dissipation mechanism comprising a coolant tank, a coolant inlet, and a side connecting groove, the coolant tank fixedly connected to one side of the fireproof door body, the coolant inlet fixedly connected to the top of the coolant tank, a side connecting groove provided on one side of the coolant tank, a heat sink movably connected to one side of the side connecting groove, and a circulation mechanism provided on the other side of the fireproof door body, the circulation mechanism comprising a first pump body, a top circulation pipe, and a cooling liquid tank, the first pump body being provided at the top of the coolant tank.

[0008] Preferably, a top circulation pipe is fixedly connected to the top of the coolant tank, and a bottom circulation pipe is fixedly connected to the bottom of the coolant tank, with one side of the top circulation pipe and one side of the bottom circulation pipe both movably connected to one side of the coolant tank.

[0009] Preferably, there are multiple cooling liquid tanks, and one side of each of the multiple cooling liquid tanks is fixedly connected to the surface of the fire door, and one side of each of the multiple cooling liquid tanks is movably connected to a connecting pipe.

[0010] Preferably, a protective mechanism is provided on one side of the fire door body. The protective mechanism includes a monitoring module, a second pump body and a top-out liquid pipe. The monitoring module is fixedly connected to the top of the coolant tank. The second pump body is provided on the top of the coolant tank. A top-out liquid pipe is movably connected to one side of the second pump body.

[0011] Preferably, one end of the ejector pipe is fixedly connected to a connecting pipe, and both sides of the connecting pipe are fixedly connected to side spray pipes. There are two side spray pipes, and one end of each of the two side spray pipes is movably connected to a connecting sleeve.

[0012] Preferably, an opening and closing mechanism is provided on one side of the outer door frame. The opening and closing mechanism includes a bottom fixing box, a motor body and a threaded rod. The bottom fixing box is fixedly connected to one side of the outer door frame. The motor body is fixedly connected to the top of the bottom fixing box. An opening and closing module is fixedly connected to one side of the motor body. The output shaft of the motor body is provided with a threaded rod.

[0013] Preferably, a sprinkler head is movably connected to one side of the connecting sleeve, and there are two sprinkler heads, both of which are symmetrically arranged along one side of the fire door.

[0014] Preferably, the threaded rod has a threaded sleeve on its surface, and a threaded groove is formed on the inner side of the threaded sleeve. The inner side of the threaded groove is threadedly connected to the surface of the threaded rod. A bearing disc is movably connected to one side of the threaded sleeve, and a connecting frame is movably connected to one side of the bearing disc.

[0015] Preferably, a connecting side frame is fixedly connected to one side of the connecting frame, and there are two connecting side frames. One side of each of the two connecting side frames is fixedly connected to one side of the connecting frame and one side of the fire door body, respectively. A limit rod is movably connected to the inner side of each of the two connecting side frames. A movable plate is provided on one side of the limit rod, and a connecting hole is provided on both sides of the movable plate. The inner side of the connecting hole is provided on the surface of the limit rod.

[0016] The automatic opening and closing method for fire doors in nuclear power plants includes the following steps:

[0017] S1. After opening the inlet, add coolant to the coolant tank along the inlet. After adding, the coolant tank is attached to the other side of the fire door. The coolant in the tank can be used to cool one side of the fire door. If a fire occurs and the fire spreads to the surface of the fire door, the coolant tank attached to the fire door can reduce the surface temperature of the fire door, thus reducing the rapid temperature rise of the fire door at the fire scene. The coolant tank also has a side connecting groove on one side. Multiple heat sinks fixed on one side of the side connecting groove increase the heat dissipation area of ​​the side connecting groove.

[0018] S2. After the first pump is started, the coolant in the coolant tank can be driven by the first pump to enter the cooling tank along the top circulation pipe. One side of each cooling tank is attached to the other side of the fire door. By attaching multiple cooling tanks to one side of the fire door, the surface of the fire door can be cooled, reducing the high temperature impact of the fire on the fire door. At the same time, the multiple cooling tanks are connected by connecting pipes. When the coolant enters the cooling tank through the top circulation pipe, it will flow in the cooling tank along the multiple connecting pipes. The coolant will also flow back to the coolant tank along the bottom circulation pipe to form a circulation.

[0019] S3. Use the monitoring module to monitor the temperature. When the temperature exceeds the set temperature, the monitoring module will drive the second pump to work. After the second pump is started, the liquid in the coolant tank can be drawn into the connecting pipe along the top liquid pipe. The connecting pipe can be used to transport the liquid to the two side spray pipes. The coolant flows into the connecting sleeve along the two side spray pipes and is sprayed out through the spray head.

[0020] S4. The motor body is started by the opening and closing module. After the motor body is started, it can drive the threaded rod to rotate. Through the threaded connection between the threaded rod and the threaded groove, the threaded sleeve can be driven to move horizontally along the surface of the threaded rod when the threaded rod rotates. When the threaded sleeve moves, it can drive the connecting frame to move horizontally along the surface of the threaded rod through the connection of the bearing disc. After the connecting frame moves, it can drive the movable plate to move. When the movable plate moves, it pushes the fire door body to move along the hinge, thereby completing the opening and closing of the fire door body.

[0021] Steps S1-S2 further include dynamically adjusting the coolant supply speed and flow path based on ambient temperature and system operating status by introducing an intelligent pump and flow control method, to ensure effective cooling and protection of the fire door under different conditions. The specific process is as follows:

[0022] Step A: Collect data related to ambient temperature and system operating status, including ambient temperature, fire door surface temperature, and coolant flow rate; preprocess the collected data, including data cleaning and normalization.

[0023] Step B involves using the collected data to build a DBN model. DBN is a deep learning model consisting of a stacked structure of multiple Restricted Boltzmann Machines (RBMs). The network structure and number of layers of the DBN are designed according to the data characteristics and system requirements.

[0024] In traditional DBN, the connection weights between the input layer and the hidden layer are updated using the backpropagation algorithm. The improved algorithm introduces dynamic adjustments based on ambient temperature and system operating conditions to adapt to varying coolant supply and circulation control requirements under different operating conditions. The improved connection weight update formula can incorporate the influence of ambient temperature and system operating conditions, as shown below:

[0025] Δw ij =∈( <v i h j > data - <v i h j > recon )+α·F(T,S)

[0026] Where: ∈: learning rate; <v i h j > data : The expected activation values ​​of input layer node vi and hidden layer node hj in the data sample; <v i h j > recon: The expected activation values ​​of input layer node vi and hidden layer node hj obtained through the reconstruction process; α: The adjustment coefficient for ambient temperature and system operating state; F(T, S): The function that considers the influence of ambient temperature T and system operating state S on weight update;

[0027] Hidden layer and output layer connection weight update: During DBN training, the update of connection weights between the hidden layer and output layer also needs to consider the influence of ambient temperature and system operating status to better adapt to the intelligent requirements of the coolant supply and circulation control system. The improved connection weight update formula is as follows:

[0028] Δw ij =∈( <h i v j > data - <h i v j > recon )+α·G(T,S)

[0029] Where, ∈: learning rate; <h i v j > data The expected activation values ​​of hidden layer node hi and output layer node vj in the data sample; <h i v j > recon : The expected activation values ​​of hidden layer node hi and output layer node vj obtained through the reconstruction process; α: The adjustment coefficient for ambient temperature and system operating state; G(T,S): The function that considers the influence of ambient temperature T and system operating state S on weight update;

[0030] Step C involves training and learning the constructed DBN model using the collected data, and continuously adjusting the model parameters through optimization algorithms such as backpropagation to enable the model to better fit the data and extract effective features and patterns from the data.

[0031] Step D: The trained DBN model is applied to the coolant supply and circulation control system. Based on input data such as ambient temperature and system operating status, the DBN model predicts the optimal coolant supply speed and flow path. Based on the output of the DBN model, the operating status of the coolant pump and the flow control system are intelligently adjusted to achieve intelligent regulation of coolant supply and circulation.

[0032] Step E: During system operation, monitor changes in ambient temperature and system operating status in real time. Based on the real-time monitored data, continuously feed it back to the DBN model and make real-time adjustments and optimizations. Through continuous monitoring and feedback adjustments, maintain the intelligent and efficient operation of the coolant supply and circulation control system.

[0033] Coolant supply rate prediction: The DBN model can predict the most suitable coolant supply rate under the current conditions based on inputs such as ambient temperature and system operating status. When the ambient temperature is high and the fire door temperature is low, the DBN model may predict a higher coolant supply rate to effectively reduce the temperature of the fire door.

[0034] The ambient temperature and the temperature of the fire door are divided into the following ranges:

[0035] When the ambient temperature is high (>40℃) and the fire door body temperature is low (<50℃): a higher coolant supply rate can be predicted to quickly reduce the fire door body temperature. The supply rate range can be set to 80-100 liters / minute.

[0036] When the ambient temperature is high (>40℃) and the fire door body temperature is high (>=50℃): In this case, the fire door body has been heated a lot and a higher supply speed is needed to quickly reduce the temperature. The supply speed range can be set to 100-120 liters / minute.

[0037] Low ambient temperature (<=40℃): If the ambient temperature is low, even if the fire door body temperature is high, such a high supply speed may not be required; the supply speed range can be set to 60-80 liters / minute.

[0038] Coolant flow path optimization: The DBN model can also predict the optimal coolant flow path to ensure that the coolant can effectively cover all parts of the fire door, thereby achieving uniform cooling. Based on the temperature distribution of different parts of the fire door, the DBN model may predict adjustments to the coolant flow path to increase coverage of high-temperature areas.

[0039] Assuming the fire door is divided into three parts—top, middle, and bottom—and the temperature of each part is monitored in real time by sensors; based on the optimal coolant flow path predicted by the DBN model, the flow path is adjusted to increase the coverage of high-temperature areas;

[0040] If the top temperature is high (>60°C), the DBN model recommends increasing the proportion of coolant flowing to the top to enhance coverage of the high-temperature area at the top. The proportion of coolant flowing to the top can be increased to 60-70%.

[0041] For areas with lower temperatures in the middle and bottom, the proportion of coolant flowing to these areas can be appropriately reduced to ensure that the coolant provides more adequate coverage in the high-temperature top area. The proportion of coolant flowing to the middle and bottom should be set to 15-20%.

[0042] Recommendations for Adjusting Operating Status: Based on the output of the DBN model, corresponding recommendations for adjusting operating status are formulated, including adjusting the operating status of the coolant pump and the parameter settings of the flow control system; when the DBN model predicts that both the ambient temperature and the fire door temperature are high, it is recommended to increase the operating status of the coolant pump and increase the supply rate to cope with potential fire risks.

[0043] If both the ambient temperature and the fire door temperature are high (ambient temperature > 40℃, fire door temperature > 50℃), the coolant pump can be set to high speed to increase the coolant supply rate. The supply rate can be set to 100-120 liters / minute.

[0044] At the same time, the flow parameters are adjusted by the flow control system to ensure that the coolant flows according to the predicted flow path, so as to ensure that it covers all parts of the fire door.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] 1) In the operation of the automatic opening and closing system for fire doors in nuclear power plants, the coolant tank that is in contact with the fire door body reduces the surface temperature of the fire door body, which can reduce the rapid temperature rise of the fire door body at the fire scene. In addition, a side connecting groove is opened on one side of the coolant tank. Multiple heat sinks fixed on one side of the side connecting groove increase the heat dissipation area of ​​the side connecting groove, which can cool down the liquid in the coolant tank. It can keep the coolant in the coolant tank at a low temperature during normal storage, and can better cool down the fire door body in the event of a fire.

[0047] 2) In the operation of the automatic opening and closing system of the nuclear power plant fire door, the circulation mechanism can continuously deliver the coolant at a lower temperature in the coolant tank to the other side of the fire door for cooling, which improves the cooling effect on the fire door. At the same time, when the fire is large, when the flames spread to one side of the fire door and burn the surface of the fire door, the excessive temperature will melt the cooling tank. After the cooling tank melts, the coolant inside will leak out and extinguish the flames on the surface of the fire door, increasing the escape time for the escapees.

[0048] 3) In the operation of the automatic opening and closing system of the nuclear power plant fire door, the monitoring module is used to monitor the temperature. When the temperature exceeds the set temperature, the monitoring module will drive the second pump to work. After the second pump is started, the liquid in the coolant tank can be drawn into the connecting pipe along the top liquid outlet pipe. The coolant flows into the connecting sleeve along the two side spray pipes and is sprayed out through the spray head. The spray head sprays the liquid out, which can control the fire on one side of the fire door and improve the protection of the fire door.

[0049] 4) In the operation of this nuclear power plant fire door automatic opening and closing system, remote operation can be used to start the motor body through the opening and closing module. When the movable plate moves, it pushes the fire door body to move along the hinge, thereby completing the opening and closing of the fire door body. When a large number of people need to escape, the fire door body can be continuously opened remotely to increase the escape speed of the escapers. Moreover, when the escapers are physically exhausted, the fire door body can be remotely activated to increase the escape speed of the escapers.

[0050] 5) Traditional coolant supply and circulation control systems typically employ fixed supply rates and flow paths, lacking intelligent adjustment based on factors such as ambient temperature and system operating status. The improved DBN learning algorithm of this invention can predict the optimal coolant supply rate and flow path based on input data such as ambient temperature and system operating status, achieving intelligent adjustment of coolant supply and circulation. By intelligently adjusting the coolant supply rate and flow path, the temperature of fire doors can be effectively reduced, improving fire protection and thus enhancing the safety of nuclear power plant facilities and personnel. The improved DBN learning algorithm can predict and adjust based on real-time environmental and system status, providing more effective protection for fire doors. Traditional coolant supply and circulation control systems lack intelligent adjustment capabilities and often cannot adapt to cooling requirements under different operating conditions. The improved DBN learning algorithm can predict and optimize based on factors such as ambient temperature and system operating status, improving the system's intelligence level and control accuracy, thereby better meeting actual operating needs. Attached Figure Description

[0051] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0052] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0053] Figure 2 This is a schematic diagram of the fire door structure of the present invention;

[0054] Figure 3 This is a schematic diagram of the heat dissipation mechanism of the present invention;

[0055] Figure 4 This is a schematic diagram of the circulation mechanism structure of the present invention;

[0056] Figure 5 This is a schematic diagram of the protective mechanism structure of the present invention;

[0057] Figure 6 This is a schematic diagram of the opening and closing mechanism of the present invention;

[0058] Figure 7This is a schematic diagram of the movable plate structure of the present invention;

[0059] In the diagram: 1. Outer door frame; 2. Fire door body; 3. Door rod; 4. Hinge; 5. Door closer; 6. Heat dissipation mechanism; 601. Coolant tank; 602. Inlet; 603. Side connecting groove; 604. Heat sink; 7. Circulation mechanism; 701. First pump body; 702. Top circulation pipe; 703. Cooling liquid tank; 704. Connecting pipe; 705. Bottom circulation pipe; 8. Protective mechanism; 801. Monitoring module; 802. Second pump body; 80 3. Top-out liquid pipe; 804. Connecting pipe; 805. Side spray pipe; 806. Connecting sleeve; 807. Spray head; 9. Opening and closing mechanism; 901. Bottom fixing box; 902. Motor body; 903. Threaded rod; 904. Threaded sleeve; 905. Threaded groove; 906. Bearing disc body; 907. Connecting frame; 908. Connecting side frame; 909. Limiting rod; 9010. Movable plate; 9011. Connecting hole; 9012. Opening and closing module. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] Example 1

[0062] In this embodiment, by Figures 1-7 The present invention provides the following technical solution:

[0063] The automatic opening and closing system for fireproof doors in nuclear power plants includes an outer door frame 1. A hinge 4 is movably connected to one side of the outer door frame 1. A fireproof door body 2 is movably connected to one side of the hinge 4. A door closer 5 is movably connected to one side of the fireproof door body 2. A door rod 3 is fixedly connected to one side of the fireproof door body 2. A heat dissipation mechanism 6 is provided on one side of the fireproof door body 2. The heat dissipation mechanism 6 includes a coolant tank 601, a coolant inlet 602, and a side connecting groove 603. The coolant tank 601 is fixedly connected to one side of the fireproof door body 2. The coolant inlet 602 is fixedly connected to the top of the coolant tank 601. A side connecting groove 603 is provided on one side of the coolant tank 601. A heat sink 604 is movably connected to one side of the side connecting groove 603. A circulation mechanism 7 is provided on the other side of the fireproof door body 2. The circulation mechanism 7 includes a first pump body 701, a top circulation pipe 702, and a cooling liquid tank 703. The first pump body 701 is provided on the top of the coolant tank 601.

[0064] In this embodiment, a top circulation pipe 702 is fixedly connected to the top of the coolant tank 601, and a bottom circulation pipe 705 is fixedly connected to the bottom of the coolant tank 601. One side of the top circulation pipe 702 and one side of the bottom circulation pipe 705 are both movably connected to one side of the cooling tank 703.

[0065] It should be noted that after the coolant enters the cooling fluid tank 703 through the top circulation pipe 702, it will flow back into the coolant tank 601 along the bottom circulation pipe 705 to form a circulation.

[0066] In this embodiment, there are multiple cooling liquid tanks 703, and one side of each cooling liquid tank 703 is fixedly connected to the surface of the fire door body 2, and one side of each cooling liquid tank 703 is movably connected to a connecting pipe 704.

[0067] It should be noted that after the coolant enters the cooling liquid tank 703 through the top circulation pipe 702, it will flow in the cooling liquid tank 703 along the multiple connecting pipes 704.

[0068] In this embodiment, a protective mechanism 8 is provided on one side of the fire door 2. The protective mechanism 8 includes a monitoring module 801, a second pump body 802 and a liquid outlet pipe 803. The monitoring module 801 is fixedly connected to the top of the coolant tank 601. The second pump body 802 is provided on the top of the coolant tank 601. The liquid outlet pipe 803 is movably connected to one side of the second pump body 802.

[0069] It should be noted that after the second pump body 802 is started, the liquid in the coolant tank 601 can be drawn into the connecting pipe 804 along the top liquid pipe 803.

[0070] In this embodiment, a connecting pipe 804 is fixedly connected to one end of the ejector pipe 803, and two side spray pipes 805 are fixedly connected to both sides of the connecting pipe 804. One end of each side spray pipe 805 is movably connected to a connecting sleeve 806.

[0071] It should be noted that the connecting pipe 804 can be used to transport liquid to the two side spray pipes 805, and the coolant flows along the two side spray pipes 805 to the connecting sleeve 806.

[0072] In this embodiment, an opening and closing mechanism 9 is provided on one side of the outer door frame 1. The opening and closing mechanism 9 includes a bottom fixing box 901, a motor body 902 and a threaded rod 903. The bottom fixing box 901 is fixedly connected to one side of the outer door frame 1. The motor body 902 is fixedly connected to the top of the bottom fixing box 901. An opening and closing module 9012 is fixedly connected to one side of the motor body 902. The output shaft of the motor body 902 is provided with a threaded rod 903.

[0073] It should be noted that, through the threaded connection between the threaded rod 903 and the threaded groove 905, the threaded sleeve 904 can be driven to move horizontally along the surface of the threaded rod 903 when the threaded rod 903 rotates.

[0074] In this embodiment, a sprinkler head 807 is movably connected to one side of the connecting sleeve 806. There are two sprinkler heads 807, and the two sprinkler heads 807 are symmetrically arranged along one side of the fire door body 2.

[0075] It should be noted that the coolant flows along the two side spray pipes 805 into the connecting sleeve 806 and is sprayed out through the spray head 807.

[0076] In this embodiment, a threaded sleeve 904 is provided on the surface of the threaded rod 903, and a threaded groove 905 is provided on the inner side of the threaded sleeve 904. The inner side of the threaded groove 905 is threadedly connected to the surface of the threaded rod 903. A bearing disc body 906 is movably connected to one side of the threaded sleeve 904, and a connecting frame 907 is movably connected to one side of the bearing disc body 906.

[0077] It should be noted that when the threaded sleeve 904 moves, it can drive the connecting frame 907 to move horizontally along the surface of the threaded rod 903 through the connection of the bearing disc body 906.

[0078] In this embodiment, a connecting side frame 908 is fixedly connected to one side of the connecting frame 907. There are two connecting side frames 908, and one side of each connecting side frame 908 is fixedly connected to one side of the connecting frame 907 and one side of the fire door body 2, respectively. Limiting rods 909 are movably connected to the inner side of each connecting side frame 908. A movable plate 9010 is provided on one side of the limiting rod 909, and connecting holes 9011 are provided on both sides of the movable plate 9010. The inner side of the connecting hole 9011 is provided on the surface of the limiting rod 909.

[0079] It should be noted that the movable plate 9010 can be moved by using the connecting hole 9011 through the limiting rod 909 on one side of the connecting side frame 908 that passes through the surface of the movable plate 9010.

[0080] Example 2

[0081] This embodiment 2 provides an automatic opening and closing system for nuclear power plant fire doors, which is used to further explain the working process or principle of the nuclear power plant fire doors provided in embodiment 1 above. The specific details are as follows:

[0082] The automatic opening and closing system for fire doors in nuclear power plants includes the following steps:

[0083] S1. First, after opening the inlet 602, add coolant to the coolant tank 601 along the inlet 602. After adding, the coolant tank 601 is attached to the other side of the fire door 2. The coolant in the coolant tank 601 can be used to cool one side of the fire door 2. If a fire occurs and the fire spreads to the surface of the fire door 2, the coolant tank 601 attached to the fire door 2 can reduce the surface temperature of the fire door 2, which can reduce the rapid temperature rise of the fire door 2 at the fire scene. In addition, a side connecting groove 603 is opened on one side of the coolant tank 601. Multiple heat sinks 604 fixed on one side of the side connecting groove 603 increase the heat dissipation area of ​​the side connecting groove 603, which can cool the liquid in the coolant tank 601. The coolant in the coolant tank 601 can be kept at a low temperature during normal storage, which can better cool the fire door 2 in the event of a fire.

[0084] S2. Simultaneously, during the cooling process of the fire door body 2 using coolant, after the first pump 701 is started, the coolant in the coolant tank 601 can be driven by the first pump 701 to enter the cooling liquid tank 703 along the top circulation pipe 702. One side of each cooling liquid tank 703 is attached to the other side of the fire door body 2. By having multiple cooling liquid tanks 703 attached to one side of the fire door body 2, the surface of the fire door body 2 can be cooled, reducing the high-temperature impact of fire on the fire door body 2. At the same time, the multiple cooling liquid tanks 703 are connected by connecting pipes 704. When the coolant enters the cooling liquid tank 703 through the top circulation pipe 702, it will... The coolant flows through the cooling liquid tank 703 between multiple connecting pipes 704, and the coolant flows back to the cooling liquid tank 601 through the bottom circulation pipe 705 to form a circulation. With the setting of the circulation mechanism 7, the coolant at a lower temperature in the cooling liquid tank 601 can be continuously sent to the other side of the fire door 2 for cooling, which improves the cooling effect of the fire door 2. At the same time, when the fire is large, when the flames spread to one side of the fire door 2 and burn the surface of the fire door 2, the excessively high temperature will melt the cooling liquid tank 703. After the cooling liquid tank 703 melts, the coolant inside will leak out to extinguish the flames on the surface of the fire door 2, which increases the escape time for the escapees.

[0085] S3. Temperature monitoring is performed using the monitoring module 801. When the temperature exceeds the set temperature, the monitoring module 801 will drive the second pump 802 to work. After the second pump 802 is started, the liquid in the coolant tank 601 can be drawn into the connecting pipe 804 along the top liquid pipe 803. The connecting pipe 804 can then transport the liquid to the two side spray pipes 805. The coolant flows along the two side spray pipes 805 into the connecting sleeve 806 and is sprayed out through the spray head 807. The spray head 807 can spray out the liquid to control the fire on one side of the fire door 2, thus improving the protection of the fire door 2.

[0086] S4. Furthermore, external controllers can control the motor body 902 using the operation of the opening / closing module 9012. The opening / closing module 9012 is equipped with a wireless control unit. Remote operation allows the motor body 902 to be started via the opening / closing module 9012. Once started, the motor body 902 drives the threaded rod 903 to rotate. Through the threaded connection between the threaded rod 903 and the threaded groove 905, the rotation of the threaded rod 903 causes the threaded sleeve 904 to move horizontally along the surface of the threaded rod 903. During this movement, the threaded sleeve 904, connected via the bearing disc 906, causes the connecting frame 907 to move horizontally along the surface of the threaded rod 903. After the frame 907 moves, the connecting rod 909 on one side of the connecting side frame 908 passes through the connecting hole 9011 on the surface of the movable plate 9010, which can drive the movable plate 9010 to move. The other side of the movable plate 9010 passes through the connecting hole 9011 on the other side of the surface of the fire door body 2, which can push the fire door body 2 to move along the hinge 4 when the movable plate 9010 moves, thereby completing the opening and closing of the fire door body 2. When a large number of people need to escape, the fire door body 2 can be opened remotely and continuously to increase the escape speed of the escapers. In addition, the fire door body 2 can be remotely activated when the escapers are exhausted, which also increases the escape speed of the escapers.

[0087] In steps S1-S2, by introducing an intelligent pump and flow control method, the supply speed and flow path of the coolant are dynamically adjusted according to the ambient temperature and system operating status to ensure effective cooling and protection of the fire door under different conditions. The specific process is as follows:

[0088] Step A: Collect data related to ambient temperature and system operating status, including ambient temperature changes, fire door surface temperature, and coolant flow rate; preprocess the collected data, including data cleaning and normalization.

[0089] Ambient temperature data acquisition: Temperature sensors or probes are installed and deployed in different locations inside and around the nuclear power plant to monitor changes in ambient temperature in real time; these sensors include air temperature sensors and liquid temperature sensors; the temperature data acquired by the sensors is collected in real time through a data acquisition system and recorded for subsequent analysis and processing;

[0090] System operating status data acquisition: Collect data related to the system operating status, including coolant flow rate, pressure, surface temperature of fire door body, and opening / closing status of fire door; install corresponding sensors or monitoring devices, such as flow meters, pressure sensors, infrared thermometers, etc., to monitor and collect this data in real time.

[0091] Data storage and processing: The collected ambient temperature and system operating status data are stored in a database or data warehouse, and necessary preprocessing is performed, such as data cleaning and noise reduction. Data processing techniques are used to analyze and mine the collected data to extract features and patterns related to coolant supply and circulation control.

[0092] Data labeling and preparation: The collected data is labeled and classified to provide training data for supervised learning algorithms. Labeling may include classifying and marking environmental temperatures and system parameters under different operating conditions. The labeled dataset is then divided into training, validation, and test sets for training, validating, and evaluating the performance of the learning algorithm model.

[0093] Step B involves using the collected data to build a DBN model. DBN is a deep learning model consisting of a stacked structure of multiple Restricted Boltzmann Machines (RBMs). The network structure and number of layers of the DBN are designed according to the data characteristics and system requirements.

[0094] In traditional DBN, the connection weights between the input layer and the hidden layer are updated using the backpropagation algorithm. The improved algorithm introduces dynamic adjustments based on ambient temperature and system operating conditions to adapt to varying coolant supply and circulation control requirements under different operating conditions.

[0095] The improved connection weight update formula can take into account the influence of ambient temperature and system operating status, as shown below:

[0096] Δw ij =∈( <v i h j > data - <v i h j > recon )+α·F(T,S)

[0097] Where: ∈: learning rate; <v i h j > data : The expected activation values ​​of input layer node vi and hidden layer node hj in the data sample; <v i h j > recon : The expected activation values ​​of input layer node vi and hidden layer node hj obtained through the reconstruction process; α: The adjustment coefficient for ambient temperature and system operating state; F(T, S): The function that considers the influence of ambient temperature T and system operating state S on weight update;

[0098] Hidden layer and output layer connection weight update: During DBN training, the update of connection weights between the hidden layer and output layer also needs to consider the influence of ambient temperature and system operating status to better adapt to the intelligent requirements of the coolant supply and circulation control system. The improved connection weight update formula is as follows:

[0099] Δw ij =∈( <h i v j > data - <h i v j > recon )+α·G(T,S)

[0100] Where, ∈: learning rate; <h i v j > data The expected activation values ​​of hidden layer node hi and output layer node vj in the data sample; <h i v j > recon : The expected activation values ​​of hidden layer node hi and output layer node vj obtained through the reconstruction process; α: The adjustment coefficient for ambient temperature and system operating state; G(T,S): The function that considers the influence of ambient temperature T and system operating state S on weight update;

[0101] Step C involves training and learning the constructed DBN model using the collected data, and continuously adjusting the model parameters through optimization algorithms such as backpropagation to enable the model to better fit the data and extract effective features and patterns from the data.

[0102] Step D: The trained DBN model is applied to the coolant supply and circulation control system. Based on input data such as ambient temperature and system operating status, the DBN model predicts the optimal coolant supply speed and flow path. Based on the output of the DBN model, the operating status of the coolant pump and the flow control system are intelligently adjusted to achieve intelligent regulation of coolant supply and circulation.

[0103] Step E: During system operation, monitor changes in ambient temperature and system operating status in real time. Based on the real-time monitored data, continuously feed it back to the DBN model and make real-time adjustments and optimizations. Through continuous monitoring and feedback adjustments, maintain the intelligent and efficient operation of the coolant supply and circulation control system.

[0104] Coolant supply rate prediction: The DBN model can predict the most suitable coolant supply rate under the current conditions based on inputs such as ambient temperature and system operating status. For example, when the ambient temperature is high and the fire door temperature is low, the DBN model may predict a higher coolant supply rate to effectively reduce the temperature of the fire door.

[0105] The ambient temperature and the temperature of the fire door are divided into the following ranges:

[0106] When the ambient temperature is high (>40℃) and the fire door temperature is low (<50℃): a higher coolant supply rate can be predicted to rapidly reduce the fire door temperature. The supply rate range can be set to 80-100 liters / minute.

[0107] When the ambient temperature is high (>40℃) and the fire door body temperature is high (>=50℃): In this case, the fire door body has already been heated significantly, requiring a higher supply rate to quickly reduce the temperature. The supply rate range can be set to 100-120 liters / minute.

[0108] Low ambient temperature (<=40℃): If the ambient temperature is low, even if the fire door body temperature is high, a high supply speed may not be necessary. The supply speed range can be set to 60-80 liters / minute.

[0109] Coolant flow path optimization: The DBN model can also predict the optimal coolant flow path to ensure that the coolant can effectively cover all parts of the fire door, thereby achieving uniform cooling. For example, based on the temperature distribution of different parts of the fire door, the DBN model may predict adjustments to the coolant flow path to increase coverage of high-temperature areas.

[0110] Assuming the fire door is divided into three parts—top, middle, and bottom—and the temperature of each part is monitored in real time by sensors, we can adjust the flow path based on the optimal coolant flow path predicted by the DBN model to increase the coverage of high-temperature areas.

[0111] For example, suppose the current situation presents a higher temperature at the top and lower temperatures at the middle and bottom. The DBN model might predict an optimized coolant flow path to increase coverage of the high-temperature top region, thereby achieving uniform cooling.

[0112] The specific numerical range and adjustments are as follows:

[0113] If the top temperature is high (>60°C), the DBN model may recommend increasing the proportion of coolant flow towards the top to improve coverage of the high-temperature area. The proportion of coolant flowing towards the top can be increased to 60-70%.

[0114] For areas with lower temperatures in the middle and bottom sections, the proportion of coolant flowing to these areas can be appropriately reduced to ensure more adequate coolant coverage in the higher-temperature top regions. The proportion of coolant flowing to the middle and bottom sections can be set to 15-20%.

[0115] The above is one possible setting method. The actual numerical range and adjustments should be determined based on specific system requirements, operating environment, and safety standards. These numerical ranges can be adjusted and optimized during model training based on historical data and empirical knowledge to ensure accurate prediction of coolant flow paths and intelligent system regulation.

[0116] Operating status adjustment recommendations: Based on the output of the DBN model, corresponding operating status adjustment recommendations can be formulated, including adjusting the operating status of the coolant pump and the parameter settings of the flow control system. For example, when the DBN model predicts that both the ambient temperature and the fire door temperature are high, it is recommended to increase the operating status of the coolant pump and increase the supply rate to cope with potential fire risks.

[0117] Assuming ambient temperature and fire door temperature are our input characteristics, and the operating status and supply rate of the coolant pump are our adjustment targets, we can formulate corresponding operating status adjustment suggestions based on the output of the DBN model.

[0118] For example, assuming the DBN model predicts that both the ambient temperature and the fire door temperature are high, it is recommended to increase the operating status of the coolant pump and increase the supply speed to cope with the possible fire risk.

[0119] The specific numerical range and adjustments are as follows:

[0120] If both the ambient temperature and the fire door temperature are high (ambient temperature > 40℃, fire door temperature > 50℃), the coolant pump can be set to high speed to increase the coolant supply rate. The supply rate can be set to 100-120 liters / minute.

[0121] At the same time, the flow parameters can be adjusted through the flow control system to ensure that the coolant flows according to the predicted flow path, so as to ensure that it covers all parts of the fire door.

[0122] It should be noted that the door closer 5, the first pump body 701, the second pump body 802, the monitoring module 801, the motor body 902, and the opening and closing module 9012 in this invention are all existing technologies. The corresponding models can be selected according to actual needs. The internal structure and operating principle of the above-mentioned parts are also common knowledge to those skilled in the art, and will not be elaborated on further.

[0123] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic opening and closing system for fire doors in nuclear power plants, comprising an outer door frame (1), characterized in that: A hinge (4) is movably connected to one side of the outer door frame (1), a fire door body (2) is movably connected to one side of the hinge (4), a door closer (5) is movably connected to one side of the fire door body (2), a door rod (3) is fixedly connected to one side of the fire door body (2), and a heat dissipation mechanism (6) is provided on one side of the fire door body (2). The heat dissipation mechanism (6) includes a coolant tank (601), a liquid inlet (602), and a side connecting groove (603). A coolant tank (601) is fixedly connected to one side of the fire door body (2). 01), the top of the coolant tank (601) is fixedly connected to the inlet (602), a side communication groove (603) is opened on one side of the coolant tank (601), a heat sink (604) is movably connected to one side of the side communication groove (603), and a circulation mechanism (7) is provided on the other side of the fire door body (2). The circulation mechanism (7) includes a first pump body (701), a top circulation pipe (702) and a cooling liquid tank (703). The top of the coolant tank (601) is provided with the first pump body (701). The top of the coolant tank (601) is fixedly connected to a top circulation pipe (702), and the bottom of the coolant tank (601) is fixedly connected to a bottom circulation pipe (705). One side of the top circulation pipe (702) and one side of the bottom circulation pipe (705) are movably connected to one side of the cooling tank (703). There are multiple cooling liquid tanks (703), and one side of each cooling liquid tank (703) is fixedly connected to the surface of the fire door body (2), and one side of each cooling liquid tank (703) is movably connected to a connecting pipe (704). A protective mechanism (8) is provided on one side of the fire door body (2). The protective mechanism (8) includes a monitoring module (801), a second pump body (802), and a top-out liquid pipe (803). The monitoring module (801) is fixedly connected to the top of the coolant tank (601). The second pump body (802) is provided on the top of the coolant tank (601). The top-out liquid pipe (803) is movably connected to one side of the second pump body (802). One end of the top liquid outlet pipe (803) is fixedly connected to a connecting pipe (804), and both sides of the connecting pipe (804) are fixedly connected to side spray pipes (805). There are two side spray pipes (805), and one end of each of the two side spray pipes (805) is movably connected to a connecting sleeve (806). An opening and closing mechanism (9) is provided on one side of the outer door frame (1). The opening and closing mechanism (9) includes a bottom fixing box (901), a motor body (902) and a threaded rod (903). The bottom fixing box (901) is fixedly connected to one side of the outer door frame (1). The motor body (902) is fixedly connected to the top of the bottom fixing box (901). An opening and closing module (9012) is fixedly connected to one side of the motor body (902). The output shaft of the motor body (902) is provided with a threaded rod (903). A sprinkler head (807) is movably connected to one side of the connecting sleeve (806). There are two sprinkler heads (807), and the two sprinkler heads (807) are symmetrically arranged along one side of the fire door body (2). The threaded rod (903) has a threaded sleeve (904) on its surface. The inner side of the threaded sleeve (904) has a threaded groove (905). The inner side of the threaded groove (905) is threadedly connected to the surface of the threaded rod (903). A bearing disc (906) is movably connected to one side of the threaded sleeve (904). A connecting frame (907) is movably connected to one side of the bearing disc (906). One side of the connecting frame (907) is fixedly connected to a connecting side frame (908). There are two connecting side frames (908), and one side of each of the two connecting side frames (908) is fixedly connected to one side of the connecting frame (907) and one side of the fire door body (2). The inner side of each of the two connecting side frames (908) is movably connected to a limiting rod (909). One side of the limiting rod (909) is provided with a movable plate (9010), and both sides of the movable plate (9010) are provided with connecting holes (9011). The inner side of the connecting hole (9011) is provided on the surface of the limiting rod (909).

2. An automatic opening and closing method for nuclear power plant fire doors, applied to the nuclear power plant fire door as described in claim 1, characterized in that, Includes the following steps: S1. After opening the inlet (602), add coolant to the coolant tank (601) along the inlet (602). After adding, the coolant tank (601) is attached to the other side of the fire door (2) by one side of the coolant tank (601). The coolant in the coolant tank (601) can be used to cool one side of the fire door (2). If a fire occurs and the fire spreads to the surface of the fire door (2), the temperature of the surface of the fire door (2) can be reduced by the coolant tank (601) attached to the fire door (2). This can reduce the rapid increase of the temperature of the fire door (2) at the fire scene. The coolant tank (601) is provided with a side connecting groove (603) on one side. Multiple heat sinks (604) fixed on one side of the side connecting groove (603) increase the heat dissipation area of ​​the side connecting groove (603). S2. After the first pump body (701) is started, the coolant in the coolant tank (601) can be driven by the first pump body (701) to enter the cooling tank (703) along the top circulation pipe (702). One side of the multiple cooling tanks (703) is attached to the other side of the fire door body (2). By attaching multiple cooling tanks (703) to one side of the fire door body (2), the surface of the fire door body (2) can be cooled, reducing the high temperature impact of the fire on the fire door body (2). At the same time, the multiple cooling tanks (703) are connected by connecting pipes (704). When the coolant enters the cooling tank (703) through the top circulation pipe (702), it will flow in the cooling tank (703) along the multiple connecting pipes (704), and the coolant will flow back to the coolant tank (601) along the bottom circulation pipe (705) to form a circulation. S3. Temperature monitoring is performed using the monitoring module (801). When the temperature exceeds the set temperature, the monitoring module (801) will drive the second pump (802) to work. After the second pump (802) is started, the liquid in the coolant tank (601) can be drawn into the connecting pipe (804) along the top liquid pipe (803). The liquid can be transported to the two side spray pipes (805) through the connecting pipe (804). The coolant flows into the connecting sleeve (806) along the two side spray pipes (805) and is sprayed out through the spray head (807). S4. Start the motor body (902) by opening and closing module (9012). After the motor body (902) is started, it can drive the threaded rod (903) to rotate. Through the threaded connection between the threaded rod (903) and the threaded groove (905), the threaded sleeve (904) can be driven to move horizontally along the surface of the threaded rod (903) when the threaded rod (903) rotates. When the threaded sleeve (904) moves, it can drive the connecting frame (907) to move horizontally along the surface of the threaded rod (903) through the connection of the bearing disc body (906). After the connecting frame (907) moves, it can drive the movable plate (9010) to move. When the movable plate (9010) moves, it pushes the fire door body (2) to move along the hinge (4), thereby completing the opening and closing of the fire door body (2).

Images