Nuclear power bypass voltage stabilization equipment and nuclear power bypass voltage stabilization system

Abstract

The invention provides nuclear power bypass voltage stabilization equipment and a nuclear power bypass voltage stabilization system, and belongs to the field of bypass voltage stabilization equipment, and the nuclear power bypass voltage stabilization equipment comprises a cabinet body, a compensation transformation module, a first ventilation shielding part, a voltage stabilization module and a second ventilation shielding part. The compensation voltage transformation module is arranged at the lower part of the inner cavity of the cabinet body, and a first ventilation gap penetrating up and down is formed in the compensation voltage transformation module; the first ventilation shielding piece is arranged on the periphery of the compensation transformation module; a radiator is arranged on the outer side face of the voltage stabilizing module. And the second ventilation shielding piece is supported on the lower side of the voltage stabilizing module, a second ventilation gap penetrating up and down is formed in the second ventilation shielding piece, and the second ventilation gap and the radiator are arranged correspondingly. Cold air sequentially flows through the first ventilation gap and the second ventilation gap so as to exchange heat with the compensation transformation module and the radiator. According to the invention, the two modules are arranged up and down, the vertically-through air duct is combined with the design of accelerating and guiding cold air by using the ventilation gap, and the heat dissipation efficiency, the structure simplification and the system redundancy are considered.

Description

Technical Field

[0001] This application belongs to the technical field of bypass voltage stabilization equipment, and more specifically, relates to a nuclear power bypass voltage stabilization equipment and a nuclear power bypass voltage stabilization system. Background Technology

[0002] Nuclear power plant auxiliary power systems have extremely high requirements for voltage stability. As a critical safety device, the bypass voltage regulator's core task is to provide continuous and stable power to important loads such as the nuclear island when the grid voltage fluctuates. This device typically integrates a compensation transformer to generate the compensation voltage and a voltage regulation module (mainly containing power devices such as thyristors) for rapid adjustment. Because it operates for extended periods in potentially dusty industrial environments and handles high-power electrical energy, the reliability of its heat dissipation design, the maintainability of its structure, and its dust protection capabilities directly determine the long-term operational stability and lifespan of the equipment.

[0003] Traditional bypass voltage regulator cabinet layouts typically employ a front-to-back partitioning method for arranging functional modules. For example, the compensation transformer is placed at the rear of the cabinet, while the voltage regulator module is placed at the front. The cabinet interior is equipped with two separate air ducts for air cooling of the compensation transformer and the voltage regulator module, respectively.

[0004] However, in practice, this traditional layout has gradually revealed problems such as poor heat dissipation reliability and difficulty in further improving heat dissipation efficiency. Summary of the Invention

[0005] The purpose of this application is to provide a nuclear power bypass voltage stabilization device and a nuclear power bypass voltage stabilization system, which aims to solve the problem that the existing nuclear power bypass voltage stabilization devices have unreasonable heat dissipation airflow planning, affecting heat dissipation efficiency and reliability.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, embodiments of this application provide a nuclear power plant bypass voltage regulator, comprising: The cabinet has an exhaust vent at the top and an air inlet at the bottom. A compensating transformer module is located in the lower part of the cabinet's internal cavity, and a first ventilation gap is formed inside the compensating transformer module that runs vertically through it. The first ventilation shield is located on the outer periphery of the compensation transformer module to block the upward flow of cold air around the compensation transformer module. A voltage regulator module is located above the compensation transformer module, and a heat sink is provided on the outer side of the voltage regulator module; The second ventilation shield is supported on the lower side of the voltage stabilizing module and its edge is connected to the side wall of the cabinet to block the cold air below the voltage stabilizing module from flowing upward. The second ventilation shield has a second ventilation gap that runs vertically through it and is correspondingly set to the radiator. Cold air flows sequentially through the first ventilation gap and the second ventilation gap to exchange heat with the compensation transformer module and the radiator.

[0007] Traditional layout schemes have gradually revealed the following defects and risks in practice: Firstly, having two independent air ducts can lead to uneven airflow distribution and make it difficult to optimize airflow organization. This is especially problematic for power devices in voltage regulator modules, which have high heat flux densities and are highly sensitive to heat dissipation. Independent air duct designs may cause problems such as air resistance mismatch or airflow short-circuiting, resulting in poor ventilation of some heat sink fins, leading to localized hot spots, accelerating device thermal fatigue, and reducing overall heat dissipation reliability.

[0008] Secondly, the parallel arrangement of two sets of air duct systems requires more internal baffles, fans, and openings, increasing the complexity of the cabinet structure. This not only raises manufacturing costs but also occupies more internal cabinet space, limiting the improvement of equipment power density. When either the voltage regulator module or the compensation transformer needs maintenance or replacement, due to their partitioned arrangement and potential enclosure by the complex air duct structure, numerous disassembly steps are often required, and the operating space is limited, increasing the difficulty, time, and potential risks of maintenance work.

[0009] Thirdly, to prevent dust, the equipment needs to be as enclosed as possible, but this hinders heat dissipation; conversely, to enhance heat dissipation, numerous ventilation holes are required, providing pathways for dust intrusion. In traditional layouts, the inlet and outlet areas of the two air ducts are relatively large, increasing the probability of dust entering the cabinet and accumulating on power devices and compensation transformer module windings under the same protection level. Therefore, there is an inherent contradiction between dust protection and heat dissipation.

[0010] Fourth, the system reliability is highly dependent on individual fans. In each independent air duct, airflow is usually driven by a few fans (or even a single fan). Once a fan fails, the corresponding heat source (compensation transformer or voltage regulator module) will quickly face the risk of overheating.

[0011] The solution shown in this application embodiment, compared with the prior art, involves cold air entering from the air inlet at the bottom of the cabinet and flowing into the first ventilation gap. The first ventilation gap is blocked by a first ventilation shield, preventing airflow. The airflow is compressed by the first ventilation gap, increasing air pressure and velocity, and flowing through the compensation transformer module at a faster speed. The airflow exiting the first ventilation gap then flows to the second ventilation shield, where it is blocked and can only pass through the second ventilation gap. Within the second ventilation gap, the airflow is compressed again, flowing towards the radiator at a faster speed, where it exchanges heat with the radiator to remove the heat absorbed by the voltage regulator module. The cold air is then discharged through the exhaust vent at the top.

[0012] The beneficial effects of this application are as follows: Firstly, the compensation transformer module and the voltage stabilizing module adopt an upper and lower layout, and utilize the airflow guidance of the first and second ventilation shields to create a vertical main air duct running from bottom to top. This solves the problems of uneven airflow distribution and airflow short-circuiting that exist in traditional dual air ducts, and achieves optimal airflow organization.

[0013] Secondly, after the cold air enters the cabinet, before flowing through the first ventilation gap, the airflow is compressed and accelerated because the first ventilation shield blocks the surrounding channels, allowing it to penetrate the interior of the compensation transformer module at a higher flow rate. This enhances the convective heat transfer efficiency between the airflow and the compensation transformer module, ensuring uniform cooling of the compensation transformer module.

[0014] After the airflow rises to below the voltage regulator module, it is constrained by the second ventilation shield and can only pass through the second ventilation gap corresponding to the heat sink. This allows the airflow to precisely impact and pass through the heat sink's fin array at a higher velocity. This enhances the cooling intensity for the power devices with the highest heat flux density, efficiently removes heat, and effectively avoids stagnant air zones and localized hot spots between the fins caused by insufficient airflow.

[0015] Third, this application eliminates the traditional two independent air duct systems, complex airflow guides, and redundant fan positions. A highly efficient air duct is constructed using only a simple first ventilation shield and a second ventilation shield, simplifying the cabinet layout. This structural simplification means fewer potential points of failure, significantly reduced maintenance costs, and improved equipment reliability.

[0016] The compensation transformer module and voltage regulator module are clearly divided into upper and lower sections, and the air duct structure does not pose a maintenance obstacle. During maintenance, there is no need to disassemble the complex air duct system. This design reduces module replacement and maintenance steps, provides ample operating space, and lowers maintenance time, workload, and the risk of misoperation. The streamlined structure also frees up cabinet space, making it possible to increase equipment power density, add redundant components, or accommodate future functional upgrades, which is beneficial for equipment miniaturization and integration.

[0017] Fourth, the strong vertical airflow formed by bottom air intake and top air exhaust creates a positive pressure trend from bottom to top inside the cabinet. This directional airflow can effectively resist the backflow of dusty air from outside through the gaps in the cabinet and quickly carry away any trace dust that may have entered with the main airflow, rather than depositing it on the devices.

[0018] Fifth, the vertically integrated air duct design allows for more flexible fan configuration, such as a redundant scheme with multiple fans connected in parallel at the top exhaust vent. Even if one fan fails, the remaining fans can still drive airflow through the entire system, simultaneously cooling all heat sources above and below, avoiding the weakness of traditional layouts where a single fan failure leads to overheating of a heat source.

[0019] In summary, this application combines a two-module, vertically connected air duct design with ventilation gaps to accelerate and guide the flow of cold air. Utilizing airflow dynamics principles, it integrates several previously difficult-to-balance goals, such as heat dissipation efficiency, structural simplification, ease of maintenance, dust protection, and system redundancy. This provides nuclear power plant auxiliary power with a high-quality, stable power supply that offers more reliable heat dissipation, easier maintenance, and a more economical lifespan.

[0020] In conjunction with the first aspect, in one possible implementation, both the compensation transformer module and the first ventilation shield are arranged vertically at intervals from the second ventilation shield to form a buffer space between the first ventilation gap and the second ventilation gap.

[0021] In conjunction with the first aspect, in one possible implementation, both the compensation transformer module and the first ventilation shield are spaced vertically from the bottom plate of the cabinet to form an air intake space between the first ventilation gap and the air inlet.

[0022] In conjunction with the first aspect, in one possible implementation, the heat sink includes a heat sink plate and a plurality of heat sink fins, the surface of the heat sink plate being thermally connected to the voltage regulator module, and each of the heat sink fins extending in the vertical direction.

[0023] In conjunction with the first aspect, in one possible implementation, the first ventilation shield is positioned at the center of the compensated transformer module.

[0024] In conjunction with the first aspect, in one possible implementation, the compensating transformer modules are arranged in several groups from top to bottom, and each compensating transformer module is provided with the first ventilation shield on its outer periphery. Adjacent compensating transformer modules are arranged vertically at intervals to form an interval space between two adjacent first ventilation gaps.

[0025] In some embodiments, the nuclear power bypass voltage regulator further includes a control module located on the front side of the cabinet's internal cavity. The control module includes a closed control box and a control circuit board located inside the control box. The control circuit board is electrically connected to the compensation transformer module and the voltage regulator module respectively via cables passing through the control box. The lower edge of the control box corresponds to the upper edge of the air intake space.

[0026] In some embodiments, the air inlet includes a bottom air inlet located at the bottom of the air inlet space and a side air inlet located on the side wall of the air inlet space.

[0027] In conjunction with the first aspect, in one possible implementation, the nuclear power bypass voltage regulator further includes several induced draft modules, each of which is configured corresponding to the exhaust port, and all of which are distributed in the same plane perpendicular to the vertical direction.

[0028] Secondly, embodiments of this application also provide a nuclear power bypass voltage stabilization system, including the aforementioned nuclear power bypass voltage stabilization device.

[0029] Compared with existing technologies, the solution shown in this application, by employing the aforementioned nuclear power bypass voltage regulator, reduces the probability of device degradation or failure due to heat dissipation issues, ensuring the long-term stable operation of the core voltage regulation function. Furthermore, the efficient utilization of the internal space makes the entire voltage regulation system more compact, facilitating its arrangement within the limited electrical building space of a nuclear power plant, or reserving space for system capacity expansion and upgrades. In addition, the system, through vertical air ducts and positive pressure design, enhances overall dust resistance while ensuring efficient heat dissipation, making it more adaptable to the industrial environment of nuclear power plants and reducing performance degradation or maintenance needs caused by environmental factors.

[0030] In summary, the nuclear power bypass voltage regulation system proposed in this application has higher reliability, is easier to maintain, has better economic performance throughout its entire life cycle, and is more environmentally friendly, providing stronger support for the safe, stable, and economical operation of nuclear power plants. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a side view of the internal structure of a nuclear power bypass voltage regulator provided in an embodiment of this application; Figure 2An internal structural perspective view of the nuclear power bypass voltage regulator provided in the embodiments of this application; Figure 3 This is a partial adaptation diagram of the heat sink and the second ventilation shield used in the embodiments of this application; Figure 4 This is a perspective view of the compensation transformer module used in the embodiments of this application.

[0033] In the diagram: 1. Cabinet; 2. Compensating transformer module; 210. First ventilation gap; 220. Transformer unit; 3. Voltage stabilizing module; 4. Radiator; 410. Heat sink plate; 420. Heat sink fins; 5. First ventilation shield; 6. Second ventilation shield; 610. Second ventilation gap; 7. Buffer space; 8. Air intake space; 9. Interval space; 10. Control module; 1010. Control box; 1020. Control circuit board; 11. Exhaust fan module. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a few" means two or more, unless otherwise explicitly specified.

[0037] Traditional layout schemes have gradually revealed the following defects and risks in practice: Firstly, having two independent air ducts can lead to uneven airflow distribution and make it difficult to optimize airflow organization. This is especially problematic for power devices in voltage regulator modules, which have high heat flux densities and are highly sensitive to heat dissipation. Independent air duct designs may cause problems such as air resistance mismatch or airflow short-circuiting, resulting in poor ventilation of some heat sink fins, leading to localized hot spots, accelerating device thermal fatigue, and reducing overall heat dissipation reliability.

[0038] Secondly, the parallel arrangement of two sets of air duct systems requires more internal baffles, fans, and openings, increasing the complexity of the cabinet structure. This not only raises manufacturing costs but also occupies more internal cabinet space, limiting the improvement of equipment power density. When either the voltage regulator module or the compensation transformer needs maintenance or replacement, due to their partitioned arrangement and potential enclosure by the complex air duct structure, numerous disassembly steps are often required, and the operating space is limited, increasing the difficulty, time, and potential risks of maintenance work.

[0039] Thirdly, to prevent dust, the equipment needs to be as enclosed as possible, but this hinders heat dissipation; conversely, to enhance heat dissipation, numerous ventilation holes are required, providing pathways for dust intrusion. In traditional layouts, the inlet and outlet areas of the two air ducts are relatively large, increasing the probability of dust entering the cabinet and accumulating on the power devices and the windings of the compensation transformer module 2, under the same protection level. Therefore, there is an inherent contradiction between dust protection and heat dissipation.

[0040] Fourth, the system reliability is highly dependent on individual fans. In each independent air duct, airflow is usually driven by a few fans (or even a single fan). Once a fan fails, the corresponding heat source (compensation transformer or voltage regulator module) will quickly face the risk of overheating.

[0041] To address the aforementioned issues, a nuclear power plant bypass voltage regulator is provided. Please refer to the following: Figures 1 to 4The nuclear power bypass voltage stabilizing device provided in this application is described below. The nuclear power bypass voltage stabilizing device includes a cabinet 1, a compensating transformer module 2, a first ventilation shield 5, a voltage stabilizing module 3, and a second ventilation shield 6. The top of the cabinet 1 forms an exhaust vent, and the bottom forms an air inlet. The compensating transformer module 2 is located in the lower part of the inner cavity of the cabinet 1, and a first ventilation gap 210 is formed inside the compensating transformer module 2, running vertically through it. The first ventilation shield 5 is located on the outer periphery of the compensating transformer module 2 to prevent cold air from flowing upwards around the compensating transformer module 2. The voltage stabilizing module 3 is located above the compensating transformer module 2, and a heat sink 4 is provided on the outer side of the voltage stabilizing module 3. The second ventilation shield 6 is supported on the lower side of the voltage stabilizing module 3, and its edge is connected to the side wall of the cabinet 1 to prevent cold air from flowing upwards below the voltage stabilizing module 3. A second ventilation gap 610 is formed on the second ventilation shield 6, running vertically through it, and the second ventilation gap 610 is correspondingly arranged with the heat sink 4. The cold air flows through the first ventilation gap 210 and the second ventilation gap 610 in sequence to exchange heat with the compensation transformer module 2 and the radiator 4.

[0042] In this embodiment, since the compensation transformer module 2 is relatively heavy, it is fixed to the cabinet 1. The connection between the first ventilation shield 5 and the compensation transformer module 2 mainly achieves the fixation between the two in the vertical direction. The first ventilation shield 5 does not play a major supporting and fixing role for the compensation transformer module 2.

[0043] In this embodiment, the first ventilation shield 5 needs to maintain a certain degree of insulation, and the first ventilation shield 5 can be manufactured using an epoxy resin-based glass fiber reinforced laminate material.

[0044] In this embodiment, the second ventilation shield 6 and the side wall of the cabinet 1 can be completely sealed and fitted together, or there can be a certain assembly gap, as long as it does not affect the ventilation requirements of the second ventilation gap 610.

[0045] The heat dissipation process of the nuclear power bypass voltage regulator in this embodiment is as follows: Cold air enters from the air inlet at the bottom of the cabinet 1 and flows to the first ventilation gap 210. The first ventilation gap 210 is blocked by the first ventilation shield 5, preventing airflow. The airflow is compressed by the first ventilation gap 210, increasing the air pressure and velocity, and flows through the compensation transformer module 2 at a faster speed. The airflow exiting the first ventilation gap 210 then flows to the second ventilation shield 6. Blocked by the second ventilation shield 6, the airflow can only pass through the second ventilation gap 610. Within the second ventilation gap 610, the airflow is compressed again and flows towards the radiator 4 at a faster speed, exchanging heat with the radiator 4 to remove the heat absorbed by the voltage regulator module 3. The cold air is then discharged through the exhaust vent at the top.

[0046] The nuclear power plant bypass voltage stabilization device provided in this application has the following advantages compared with the prior art: Firstly, the compensation transformer module 2 and the voltage stabilizing module 3 adopt an upper and lower layout, and utilize the airflow guidance of the first ventilation shield 5 and the second ventilation shield 6 to create a main air duct that runs vertically from bottom to top. This solves the problems of uneven airflow distribution and airflow short-circuiting that exist in traditional dual air ducts, and achieves optimal airflow organization.

[0047] Secondly, after the cold air enters the cabinet 1, before flowing through the first ventilation gap 210, the airflow is compressed and accelerated because the first ventilation shield 5 blocks the surrounding channels, allowing it to penetrate the interior of the compensation transformer module 2 at a higher flow rate. This enhances the convective heat transfer efficiency between the airflow and the compensation transformer module 2, ensuring uniform cooling of the compensation transformer module 2.

[0048] After the airflow rises to below the voltage regulator module 3, it is constrained by the second ventilation shield 6 and can only pass through the second ventilation gap 610 corresponding to the heat sink 4. This allows the airflow to precisely impact and pass through the fin array of the heat sink 4 at a higher flow rate. This enhances the cooling intensity of the power device with the highest heat flux density, efficiently removes heat, and effectively avoids the formation of still air zones and local hot spots between the fins due to insufficient airflow.

[0049] Third, this application eliminates the traditional two independent air duct systems, complex airflow guides, and redundant fan positions. A highly efficient air duct is constructed using only the simple first ventilation shield 5 and second ventilation shield 6, simplifying the cabinet layout. Simplified structure means fewer potential points of failure, significantly reduced maintenance costs, and improved equipment reliability.

[0050] The compensation transformer module 2 and voltage regulator module 3 are clearly divided into upper and lower sections, and the air duct structure does not pose a maintenance obstacle. During maintenance, there is no need to disassemble the complex air duct system. This design reduces the number of steps required for module replacement and maintenance, provides ample operating space, and lowers maintenance time, workload, and the risk of misoperation. The streamlined structure also frees up cabinet space, making it possible to increase equipment power density, add redundant components, or accommodate future functional upgrades, which is beneficial for equipment miniaturization and integration.

[0051] Fourth, the strong vertical airflow formed by bottom air intake and top air exhaust creates a positive pressure trend from bottom to top inside the cabinet. This directional airflow can effectively resist the backflow of dusty air from outside through the gaps in the cabinet and quickly carry away any trace dust that may have entered with the main airflow, rather than depositing it on the devices.

[0052] Fifth, the vertically integrated air duct design allows for more flexible fan configuration, such as a redundant scheme with multiple fans connected in parallel at the top exhaust vent. Even if one fan fails, the remaining fans can still drive airflow through the entire system, simultaneously cooling all heat sources above and below, avoiding the weakness of traditional layouts where a single fan failure leads to overheating of a heat source.

[0053] In summary, this application combines a two-module, vertically connected air duct design with ventilation gaps to accelerate and guide the flow of cold air. Utilizing airflow dynamics principles, it integrates several previously difficult-to-balance goals, such as heat dissipation efficiency, structural simplification, ease of maintenance, dust protection, and system redundancy. This provides nuclear power plant auxiliary power with a high-quality, stable power supply that offers more reliable heat dissipation, easier maintenance, and a more economical lifespan.

[0054] In some embodiments, see Figure 2 and Figure 4 The compensation transformer module 2 includes several transformer units 220, which are distributed at intervals along a path perpendicular to the vertical direction. That is, in the same compensation transformer module 2, the transformer units 220 are distributed in the same horizontal plane. The first ventilation shield 5 reserves assembly gaps corresponding to each transformer unit 220. The transformer units 220 are placed in the assembly gaps, and the edge of the first ventilation shield 5 is fixed to the side wall of the cabinet 1.

[0055] In this embodiment, the transformer unit 220 includes an iron core and several sets of windings wound along a vertical axis around the iron core. First ventilation gaps 210 are formed between adjacent sets of windings and between different layers of the same winding. A first ventilation shield 5 surrounds the outer periphery of the windings, allowing cold air to pass through the first ventilation gaps 210 from bottom to top. This allows cold air entering from the bottom to penetrate the densest area between the heating elements of the windings vertically along the shortest path. The airflow directly washes over the heat dissipation surface of the windings, resulting in heat exchange efficiency and heat conduction speed far exceeding traditional external air cooling. The narrow first ventilation gaps 210 force the airflow to accelerate, increasing the degree of air turbulence and more effectively disrupting the static hot air boundary layer on the winding surface, thereby significantly improving the convective heat transfer coefficient and solving the core problem of heat dissipation difficulties inside high-power transformers.

[0056] Meanwhile, the distribution of multiple transformer units 220 on the same horizontal plane achieves the purpose of dispersing the heat source, which facilitates the establishment of independent and uniform cooling air channels for each unit, eliminates hot spots formed by heat accumulation inside the large iron core and windings, and significantly increases the overall heat dissipation area, making heat dissipation more uniform and efficient.

[0057] From the perspective of the structure and electrical performance of the transformer unit 220 itself, the winding is wound along the vertical axis. Its own weight and the electromagnetic force generated by the current mainly act along the axial direction, making the winding support structure more stable and effectively resisting vibration and deformation during operation, resulting in stronger mechanical stability and short-circuit withstand capability. The vertical ventilation gap, while efficiently dissipating heat, also forms an open, air-circulating insulation channel, which is conducive to dissipating moisture and potential local overheating, improving the overall insulation working environment of the winding, and enhancing the electrical reliability of long-term operation.

[0058] In terms of environmental adaptability, the strong vertical through-flow creates directional airflow walls in the winding gaps, effectively preventing dust from accumulating between critical winding turns and on insulation surfaces. Dust is primarily confined to the inlet filter and easily cleanable non-core areas. Improved heat dissipation efficiency significantly reduces the operating temperature of the windings and core, extending the overall thermal life of the transformer module and enhancing its reliability.

[0059] Optionally, a first assembly gap is formed between the assembly gap and the transformer unit 220. The width of the first assembly gap is no more than 2mm (e.g., 1.5mm, 1mm, 0.5mm). A small amount of cold air can pass through the first assembly gap, but it is necessary to ensure that the cold air mainly flows through the first ventilation gap 210.

[0060] Driven by positive pressure at the bottom, the cool air will choose the path of least resistance. The first ventilation gap 210 is a specially designed main heat dissipation channel with relatively low air resistance. However, the first assembly gap is very narrow, creating higher flow resistance. The vast majority of the airflow will pass through the low-resistance main path (first ventilation gap 210) at high speed, directly forcibly cooling the windings and ensuring core heat dissipation efficiency. A small amount of airflow will pass through this high-resistance first assembly gap, forming a high-resistance bypass branch around the transformer unit 220, which can also provide cooling around the transformer unit 220.

[0061] Meanwhile, during actual loading and unloading of the transformer unit 220, if there is an excessive fit or interference fit between the transformer unit 220 and the assembly gap, significant friction may occur, and it may even jam due to manufacturing tolerances. The first assembly gap ensures that the transformer unit 220 can be smoothly inserted into and withdrawn from the assembly gap, and can absorb assembly errors, improving assembly convenience. When the equipment is running, the transformer unit 220 will heat up and expand. The first assembly gap also provides necessary space for the thermal expansion of the material, preventing the transformer unit 220 from jamming or generating excessive internal stress due to expansion.

[0062] Optionally, a second assembly gap is formed between the first ventilation shield 5 and the side wall of the cabinet 1. The width of the second assembly gap is no more than 1 mm (e.g., 0.5 mm) to minimize the passage of cold air. The second assembly gap is mainly used to absorb manufacturing and assembly tolerances, accommodate thermal expansion and contraction, and ensure the structural reliability of long-term operation.

[0063] In some embodiments, for ease of maintenance, several transformer units 220 are distributed in the left-right direction in the same compensation transformer module 2, and the outline of the first ventilation gap 210 on the horizontal plane presents a slit shape with a front-to-back length greater than the left-to-right width.

[0064] In some embodiments where the first ventilation shield 5 and the second ventilation shield 6 are spatially distributed, the gap between the first ventilation shield 5 and the second ventilation shield 6 is small, with a gap height not exceeding 5mm (e.g., 4mm, 2mm, 0mm). This embodiment is applicable to scenarios where the first ventilation gap 210 and the second ventilation gap 610 are vertically aligned, in which case the upper surface of the first ventilation shield 5 is approximately flush with the upper surface of the compensation transformer module 2.

[0065] In some embodiments, see Figure 1 and Figure 2 The voltage regulator module 3 is provided in several parts, which are distributed at intervals along a path perpendicular to the vertical direction, that is, the voltage regulator modules 3 are distributed in the same horizontal plane. The voltage regulator modules 3 can be synchronously fixed by the same second ventilation shield 6, which can improve the assembly strength of the voltage regulator modules 3 and prevent the voltage regulator modules 3 from vibrating during operation.

[0066] Optionally, several voltage regulator modules 3 are distributed along the left and right directions, and the heat sink 4 is located on the left or rear side of the voltage regulator module 3. The length direction of the second ventilation gap 610 is parallel to the front and back directions.

[0067] In other embodiments where the first ventilation shield 5 and the second ventilation shield 6 are spatially distributed, see... Figure 1 and Figure 2 The compensation transformer module 2 and the first ventilation shield 5 are both vertically spaced from the second ventilation shield 6 to form a buffer space 7 between the first ventilation gap 210 and the second ventilation gap 610. This embodiment is applicable to scenarios where the first ventilation gap 210 and the second ventilation gap 610 are not vertically aligned (i.e., they are misaligned in a direction perpendicular to the vertical direction). In this case, the upper surface of the first ventilation shield 5 is lower than the upper surface of the compensation transformer module 2.

[0068] Setting a buffer space of 7 can bring the following benefits: Firstly, when the first ventilation gap 210 and the second ventilation gap 610 are misaligned vertically, the high-speed vertically rising airflow will encounter a sudden change in path. Without the buffer space 7, the airflow rushing out from the lower first ventilation gap 210 will directly collide with the non-ventilated area of ​​the second ventilation shield 6, generating turbulence, vortices, and wind pressure impact, resulting in pressure loss and noise, and interfering with the uniformity of air intake of the upper radiator 4.

[0069] The buffer space 7 acts as a relatively open transition cavity, allowing airflow from multiple potentially uneven ventilation gaps below to slow down, mix, and achieve pressure and temperature gradient equilibrium. After stabilizing, the airflow smoothly changes direction, re-accelerates, and passes evenly through the second ventilation gap 610 above. This improves ventilation efficiency and ensures that the radiator 4 receives stable and uniform cooling air.

[0070] Secondly, during long-term operation, the air resistance of the compensation transformer module 2, voltage regulator module 3, and radiator 4 may change due to varying degrees of dust accumulation. The buffer space 7, acting as a pressure buffer and coupling interface, can partially absorb this change, preventing the local increase in lower air resistance from being directly transmitted to the entire air duct system, thereby improving the system's stability in responding to changes in local operating conditions.

[0071] Optionally, in order to compress the vertical dimensions, the second ventilation shield 6 is a plate-shaped component, and the plate surface of the second ventilation shield 6 is perpendicular to the vertical direction.

[0072] In some embodiments, see Figure 1 and Figure 2 The compensating transformer module 2 and the first ventilation shield 5 are both spaced vertically from the bottom plate of the cabinet 1 to form an air intake space 8 between the first ventilation gap 210 and the air inlet (i.e., the air inlet is set corresponding to the air intake space 8). In this embodiment, the lower surface of the first ventilation shield 5 is higher than the lower surface of the compensating transformer module 2 to reduce the assembly size in the vertical direction while meeting ventilation requirements.

[0073] If the air inlet is directly aligned with the compensating transformer module 2, the nearest first ventilation gap 210 will receive the most airflow, while those further away will receive insufficient airflow, resulting in uneven cooling. In this embodiment, the air inlet space 8 forms a static pressure distribution box. Cold air first enters the open air inlet space 8, where the pressure is equalized, and then it is evenly distributed from below to all the first ventilation gaps 210 inside the compensating transformer module 2. This achieves uniform and fair heat dissipation, which is a prerequisite for effective heat dissipation in modular design.

[0074] Meanwhile, the airflow velocity from the bottom air inlet is relatively high and may be unstable. The air inlet space 8 provides a buffer and expansion area, which temporarily reduces the airflow velocity, converts kinetic energy into static pressure, and makes the flow more stable, reducing the turbulence and noise generated by the direct impact of airflow on the equipment.

[0075] Furthermore, in nuclear power plant environments, air intake filters are the first line of defense against dust intrusion and require regular inspection, cleaning, or replacement. The presence of the air intake space 8 allows the filters to be designed as large, easily removable modules (e.g., pull-out). Maintenance personnel can safely and conveniently install and remove the filters within the spacious area without disassembling internal electrical equipment.

[0076] The presence of the air intake space 8 also allows for greater flexibility in the design of the location and number of air intakes. Depending on the installation environment of the cabinet 1 and the fan selection, one or more air intakes can be installed on the lower part of the base plate or side plate, without having to precisely align them with each transformer unit 220. The air intake space 8 will naturally redistribute the airflow.

[0077] In some embodiments, see Figure 2 and Figure 3 The radiator 4 includes a heat sink 410 and several heat sink fins 420. The surface of the heat sink 410 is thermally connected to the voltage regulator module 3. Each heat sink fin 420 extends in the vertical direction, and the several heat sink fins 420 are distributed in a direction perpendicular to the vertical direction (i.e., the horizontal direction).

[0078] The cold air flows from bottom to top. The extension direction (fin channel) of the heat dissipation fins 420 is set to be parallel to the main airflow direction (up and down), so that the airflow can flow through the narrow channel between the heat dissipation fins 420 in the smoothest path, reducing the resistance of the airflow when passing through the radiator 4, allowing a larger air volume to be obtained under the same fan power, or using a smaller power air intake module 11 to achieve the same cooling effect.

[0079] Based on this, after being constrained and accelerated by the second ventilation shield 6 below, the airflow will concentrate through the second ventilation gap 610 at a relatively high speed and a certain pressure. When this high-speed airflow vertically impacts the parallel vertical fin array, it will produce a jet-like impact effect. This effect can strongly disrupt the static hot air boundary layer attached to the surface of the heat dissipation fins 420, thereby carrying away heat, effectively improving the local convective heat transfer coefficient of the fin surface, effectively preventing the device from overheating, avoiding the generation of local hot spots, and improving the operating consistency and lifespan of all power devices.

[0080] Optionally, the voltage regulator module 3 includes a voltage regulator housing and voltage regulator power devices (such as thyristors, current sensors, and voltage sensors). One side wall of the voltage regulator housing is open and is covered by a heat sink 410. The voltage regulator power devices are placed inside the cavity of the voltage regulator housing and are in close contact with the heat sink 410 to achieve heat conduction.

[0081] This embodiment prevents conductive dust, oil mist, corrosive gases, and other contaminants from directly adhering to the power devices, thus avoiding faults such as creepage, short circuits, and insulation degradation caused by pollutants. Furthermore, the enclosed chamber provides a controllable environment; by placing desiccants or employing a micro-positive pressure design, it effectively prevents the intrusion of humid air, avoids condensation on the device surface, and reduces the risk of insulation breakdown or corrosion of metal components due to moisture.

[0082] This embodiment efficiently directs the heat generated by the power devices requiring cooling to the specially designed heat sink 4 area, preventing it from spreading disorderly within the cavity. The heat sink fins 420 are fully exposed to the external cooling airflow; while the electrical system is sealed and protected in an ideal environment. The two are coupled through the heat sink 410, ensuring no interference between them.

[0083] Optionally, the surface of the heat dissipation fins 420 is perpendicular to the heat dissipation plate 410, and several heat dissipation fins 420 are distributed along the front-to-back direction. The ratio of the width D1 of the heat dissipation fins 420 in the left-to-right direction to the width D2 of the heat dissipation plate 410 in the front-to-back direction is 1:10 to 1:16. This makes the distribution area of ​​the several heat dissipation fins 420 on the horizontal plane approximately the same as the shape and size of the second ventilation gap 610, presenting a slit structure with a front-to-back dimension larger than the left-to-right dimension.

[0084] Air from the buffer space 7 is ejected through a narrow, slit-like second ventilation gap 610, which is long at the front and back and narrow at the sides. Because the fin array shape of the radiator 4 matches the incoming airflow pattern, the airflow can be precisely injected into each parallel fin gap, resulting in low inlet airflow loss and avoiding the edge effect of high central velocity and low lateral velocity, thus achieving effective utilization of the heat dissipation area. Furthermore, the combination of the long, narrow airflow cross-section and the equally long, narrow fin channels creates a stable, continuous, and comprehensive vertical airflow wall through the radiator 4, maintaining the gas velocity and continuously and efficiently disrupting the thermal boundary layer on the fin surface, thereby achieving uniform convective heat transfer throughout the entire radiator 4.

[0085] When the compensated transformer module 2 is running, due to the superposition of core losses (eddy currents, hysteresis) and winding copper losses, its central region is often the hotspot where heat most easily accumulates, while the front and rear sides (or left and right sides) of the first ventilation gap 210 are open. See Figure 1 , Figure 2 and Figure 4In this embodiment, the first ventilation shield 5 is positioned in the middle of the compensation transformer module 2, thus restricting the space in the middle of the first ventilation gap 210. According to fluid dynamics principles, when the cross-sectional area of ​​the airflow decreases (entering the narrow ventilation gap from the open air intake space 8), the flow velocity increases significantly. This high-speed airflow can more violently scour the winding surface, disrupting the thermal boundary layer, thereby greatly improving the convective heat transfer efficiency of this critical area and forming targeted enhanced cooling for the main heat-generating locations.

[0086] Optionally, the first ventilation shield 5 can be a sheet material, such as epoxy board or polyester fiberglass mat. The thickness of a single first ventilation shield 5 can be selectively set according to assembly requirements, typically 8mm to 20mm (e.g., 10mm, 14mm, 18mm) to ensure sufficient rigidity.

[0087] Preferably, insulating skirts or ribs are designed on the side edge of the first ventilation shield 5 near the compensation transformer module 2 to increase the surface creepage distance. Metal threaded inserts are pre-embedded in critical areas such as the assembly gap edges to achieve a secure and reusable mechanical connection with the transformer unit 220. The surface of the first ventilation shield 5 may be treated with an antistatic and hydrophobic coating to enhance its anti-fouling ability.

[0088] In some embodiments, see Figure 2 and Figure 4 The compensation transformer module 2 is provided in several groups from top to bottom. Each compensation transformer module 2 is provided with a first ventilation shield 5 on its outer periphery. Two adjacent compensation transformer modules 2 are arranged vertically and vertically to form an interval space 9 between two adjacent first ventilation gaps 210.

[0089] This embodiment allows for independent and precise design and control of the cooling airflow and velocity for each layer (for example, the compensation transformer module 2 with greater heat generation can be designed with a wider first ventilation gap 210), ensuring that each layer receives the necessary and sufficient cooling.

[0090] The partition space 9 serves as both thermal insulation and an airflow rectification chamber. Airflow released upwards from the lower module is first slowed, mixed, and partially diffused within this space, preventing high-temperature airflow from directly impacting the upper module. This effectively prevents heat accumulation in the vertical direction, ensuring uniform and predictable cooling.

[0091] Optionally, the number of transformer units 220 in each group of compensation transformer modules 2 is the same, and they are aligned vertically. The first ventilation gap 210 in the vertically aligned transformer units 220 is aligned vertically to form a through air duct.

[0092] Optionally, the edge of the first ventilation shield 5 is provided with an overlapping fixing ear, the side wall of the cabinet 1 has a reinforcing beam, the overlapping fixing ear overlaps on the adjacent reinforcing beam, and is locked to the reinforcing beam by threaded fasteners.

[0093] In some embodiments, see Figure 1 and Figure 2 The nuclear power plant bypass voltage regulator also includes a control module 10 located at the front of the inner cavity of the cabinet 1. The control module 10 includes a closed control box 1010 and a control circuit board 1020 located within the control box 1010. The control circuit board 1020 has a control interface and a control switch. The control circuit board 1020 is electrically connected to the compensation transformer module 2 and the voltage regulator module 3 via cables passing through the control box 1010. The lower edge of the control box 1010 corresponds to the upper edge of the air inlet space 8. Heat generated by the control circuit board 1020 is transferred to the control box 1010.

[0094] Placing the control module 10 at the front of the cabinet 1 allows technicians to easily operate it without opening the entire cabinet or going around to the back of the equipment when setting parameters, checking status, resetting faults, or conducting routine inspections. This makes operation convenient, safe, and efficient. Furthermore, the enclosed control box 1010 forms an independently detachable module. When the control circuit needs upgrading or malfunctions, the control module 10 can be removed entirely for repair or replacement without disturbing the modules at the rear, simplifying the maintenance process.

[0095] In addition, the enclosed control box 1010 provides a barrier for the internal control circuit board 1020, isolating it from the dust, oil mist, humidity and interference generated by the power module that may exist in the cabinet, thus avoiding circuit board corrosion, short circuits, false triggering and other failures caused by environmental factors.

[0096] Optionally, since the temperature field inside the cabinet is usually lowest at the bottom and gradually increases upwards, the control module 10 is located in front of the compensation transformer module 2, in the area with the lowest and most stable temperature inside the cabinet. This is beneficial for the long-term reliable operation of temperature-sensitive control electronic components and extends their lifespan.

[0097] Specifically, a clearance space corresponding to the control module 10 is formed between the front side of the first ventilation shield 5 and the front side wall of the inner cavity of the cabinet 1. A third assembly gap is formed between the first ventilation shield 5 and the control box 1010. On the one hand, it can absorb manufacturing and assembly tolerances, and on the other hand, it can allow a small amount of cold air to pass through the third assembly gap to cool the control box 1010.

[0098] Optionally, the control box 1010 has an operation opening on the front, covered by a transparent cover. The cover can be opened and closed to allow operation when needed. The transparent cover also facilitates observation of the control circuit board 1020.

[0099] Based on the above embodiments, see Figure 1 The air inlet includes a bottom air inlet located at the bottom of the air intake space 8, and side air inlets located on the side walls of the air intake space 8. The side air inlets are located on at least one of the front, left, right, and rear side walls of the air intake space 8. Figure 1 An exemplary embodiment is shown in which the side air inlet is located on the front side wall of the air inlet space 8. The solid straight arrow at the bottom shows the air intake path of cold air, and the hollow straight arrow at the top shows the air exhaust path of hot air.

[0100] Since the lower edge of the control box 1010 corresponds to (i.e. roughly aligned with) the upper edge of the air inlet space 8, all the cold air delivered by the side air vents can flow into the air inlet space 8, ensuring that the cold air is gradually transmitted upward from the air inlet space 8, preventing the airflow entering the partition space 9 from flowing out of the side air vents, and ensuring the orderliness of the airflow.

[0101] In specific implementation, the lower edge of the control box 1010 is aligned with the upper edge of the air intake space 8 (i.e., the lower surface of the first ventilation shield 5 below). Alternatively, the lower edge of the control box 1010 is slightly higher than the upper edge of the air intake space 8, with a height difference not exceeding 15mm (e.g., 10mm, 5mm), to avoid affecting the orderly flow of airflow. Or, the lower edge of the control box 1010 is slightly lower than the upper edge of the air intake space 8, with a height difference not exceeding 10mm (e.g., 5mm), to avoid affecting the air intake volume.

[0102] In some embodiments, see Figure 1 and Figure 2 The nuclear power plant bypass voltage regulator also includes several induced draft modules 11, each corresponding to an exhaust port, and all distributed in the same plane perpendicular to the vertical direction. The implementation of the induced draft modules 11 includes, but is not limited to, induced draft fans.

[0103] In this embodiment, all the air intake modules 11 are arranged in the same plane as the top exhaust vent, which is equivalent to creating a uniform negative pressure source at the exhaust vent. The negative pressure can be evenly applied to the entire cross-section of the top of the cabinet 1. This ensures that the vertical airflow flowing from bottom to top through the compensation transformer module 2, the voltage stabilizing module 3, and the radiator 4 is smoothly and evenly extracted when it reaches the top, avoiding local acceleration or stagnation of the airflow, and making the airflow obtained by all the parallel heat source modules and radiator 4 channels below more balanced.

[0104] Furthermore, this embodiment employs a redundant design with several exhaust modules 11 operating in parallel. Even if one or more exhaust modules 11 fail, the remaining exhaust modules 11 can still maintain a basic cooling airflow sufficient to prevent overheating of the equipment, and the system will not immediately shut down. Arranging the redundant exhaust modules 11 on the same plane and in the same functional location (exhaust vent) ensures that if any exhaust module 11 fails, its exhaust task can be seamlessly and instantly shared by other exhaust modules 11 on the same plane, and the airflow organization pattern will not be distorted.

[0105] Optionally, an air-guiding panel is installed on the top of the cabinet 1, forming a vertically continuous air-guiding channel. The air-guiding channel is connected to the top space of the cabinet 1, and the distance L between the lower opening of the air-guiding channel and the top surface of the voltage stabilizing module 3 in the vertical direction is 5mm~20mm (e.g., 10mm, 15mm). The air-guiding module 11 is located inside the air-guiding channel. The smaller distance L can meet the ventilation design requirements, while also avoiding a large area of ​​empty space above the voltage stabilizing module 3, thus improving the compactness in the height direction.

[0106] Preferably, several air intake channels are symmetrically arranged on the left and right sides of the top of the cabinet 1, and also symmetrically arranged front and back, to maintain uniform airflow at the top. The figure exemplarily shows four air intake modules 11, which are divided into two groups and are symmetrically arranged not only on the left and right sides of the top of the cabinet 1, but also symmetrically arranged front and back.

[0107] Based on the same inventive concept, this application also provides a nuclear power bypass voltage regulation system, including the above-mentioned nuclear power bypass voltage regulation equipment.

[0108] Compared with existing technologies, the nuclear power plant bypass voltage regulation system provided in this application reduces the probability of device degradation or failure due to heat dissipation issues by adopting the aforementioned nuclear power plant bypass voltage regulation equipment, ensuring the long-term stable operation of the core voltage regulation function. Furthermore, the efficient use of internal space makes the entire voltage regulation system more compact, facilitating its installation within the limited electrical building space of a nuclear power plant, or reserving space for system capacity expansion and upgrades. In addition, the system, through vertical air ducts and positive pressure design, enhances overall dust resistance while ensuring efficient heat dissipation, making it more adaptable to the industrial environment of nuclear power plants and reducing performance degradation or maintenance needs caused by environmental factors.

[0109] In summary, the nuclear power bypass voltage regulation system proposed in this application has higher reliability, is easier to maintain, has better economic performance throughout its entire life cycle, and is more environmentally friendly, providing stronger support for the safe, stable, and economical operation of nuclear power plants.

[0110] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A nuclear power plant bypass voltage regulator, characterized in that, The utility model relates to a nuclear power bypass pressure regulating device, which comprises a cabinet (1) with an air outlet at the top and an air inlet at the bottom; a compensation voltage transformation module (2) arranged in the lower part of the inner cavity of the cabinet (1), wherein the compensation voltage transformation module (2) is internally formed with a first ventilation gap (210) extending vertically; a first ventilation blocking piece (5) arranged on the outer periphery of the compensation voltage transformation module (2) to block the upward flow of cold air around the compensation voltage transformation module (2); a voltage stabilization module (3) arranged above the compensation voltage transformation module (2), wherein the outer side of the voltage stabilization module (3) is provided with a heat sink (4); a second ventilation blocking piece (6) supported on the lower side of the voltage stabilization module (3) and connected with the side wall of the cabinet (1) at the edge to block the upward flow of cold air below the voltage stabilization module (3), wherein the second ventilation blocking piece (6) is formed with a second ventilation gap (610) extending vertically, and the second ventilation gap (610) is arranged correspondingly to the heat sink (4); and cold air flows through the first ventilation gap (210) and the second ventilation gap (610) in sequence to exchange heat with the compensation voltage transformation module (2) and the heat sink (4). The compensation voltage transformation module (2) and the first ventilation blocking piece (5) are arranged vertically with the second ventilation blocking piece (6) to form a buffer space (7) between the first ventilation gap (210) and the second ventilation gap (610). The compensation voltage transformation module (2) and the first ventilation blocking piece (5) are arranged vertically with the bottom plate of the cabinet (1) to form an air inlet space (8) between the first ventilation gap (210) and the air inlet. The heat sink (4) comprises a heat sink plate (410) and a plurality of heat sink fins (420), wherein the plate surface of the heat sink plate (410) is in thermal contact with the voltage stabilization module (3), and each heat sink fin (420) extends in the vertical direction. The first ventilation blocking piece (5) is arranged correspondingly to the middle part of the compensation voltage transformation module (2). The compensation voltage transformation module (2) is arranged in a plurality of groups from top to bottom, each compensation voltage transformation module (2) is respectively provided with the first ventilation blocking piece (5) on the outer periphery, and adjacent two compensation voltage transformation modules (2) are arranged vertically to form a spacing space (9) between the first ventilation gaps (210) of the adjacent two compensation voltage transformation modules (2). The nuclear power bypass pressure regulating device further comprises a control module (10) arranged on the front side of the inner cavity of the cabinet (1), wherein the control module (10) comprises a closed control box (1010) and a control circuit board (1020) arranged in the control box (1010), the control circuit board (1020) is electrically connected with the compensation voltage transformation module (2) and the voltage stabilization module (3) through cables penetrating the control box (1010), and the lower edge of the control box (1010) corresponds to the upper edge of the air inlet space (8).

2. The nuclear power plant bypass regulator according to claim 1, wherein The air inlet comprises a bottom air inlet arranged at the bottom of the air inlet space (8) and a side air inlet arranged on the side wall of the air inlet space (8).

3. The nuclear power plant bypass regulator according to claim 1, wherein ​ 4. The nuclear power plant bypass regulator according to claim 1, wherein ​ 5. The nuclear power plant bypass regulator according to claim 1, wherein ​ 6. The nuclear power plant bypass regulator according to claim 1 or 5, wherein ​ 7. The nuclear power plant bypass regulator according to claim 3, wherein ​ 8. The nuclear power plant bypass regulator according to claim 7, wherein ​ 9. The nuclear power plant bypass pressure regulating device of claim 1, wherein, The nuclear power bypass pressure stabilizing device further comprises a plurality of air induction modules (11), each of the air induction modules (11) is arranged corresponding to the air outlet, and each of the air induction modules (11) is distributed in the same plane perpendicular to the up-down direction.

10. A nuclear power plant bypass regulator system, characterized by, The nuclear power bypass pressure stabilizing device comprises the air induction module (11) as claimed in any one of claims 1-9.

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