Valve device and nuclear power plant equipment

Abstract

The utility model provides a valve device and nuclear power plant equipment, wherein the valve device includes: the casing is equipped with buoyancy cavity and the overhaul opening that communicates with buoyancy cavity, the cover plate is connected with casing and is used for opening and closing overhaul opening, the valve is equipped in buoyancy cavity, the pipeline communicates with valve, and the pipeline is equipped with first communication port and the second communication port that extends outside buoyancy cavity and communicates with valve, the fixed connecting piece is equipped on the casing and is used for connecting with fixed rope. Through adopting above-mentioned technical scheme, the valve device passes through the cooperation of each part, utilizes buoyancy cavity and makes valve can be placed reasonably under water, connects with external system through the pipeline simultaneously, utilizes fixed connecting piece and guarantees the position fixed of device, provides a complete and effective solution for underwater related work, and the setting of overhaul opening and cover plate also facilitates the maintenance and overhaul of later period.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear power plant equipment, and more specifically, to a valve device and nuclear power plant equipment. Background Technology

[0002] In underwater dredging, valve placement is a crucial issue that requires careful consideration. Past practices have presented limitations in valve placement methods. Typically, valves are either directly submerged in water or placed on floating rafts laid on the sea surface. However, there has been no optimal method or means for directly placing valves in surface conditions, which has caused numerous inconveniences for underwater dredging operations and hindered subsequent valve maintenance and repair.

[0003] In conclusion, the existing valve placement methods have obvious shortcomings, and a new technical solution is urgently needed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a valve device and nuclear power plant equipment to solve the technical problem of high difficulty in valve maintenance during underwater dredging in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, a valve device is provided, comprising:

[0007] The shell is provided with a buoyancy cavity and an inspection opening communicating with the buoyancy cavity;

[0008] A cover plate, connected to the housing and used to open and close the access opening;

[0009] A valve is located in the buoyancy cavity;

[0010] A pipe is connected to the valve, and the pipe is provided with a first communication port connected to the valve and a second communication port extending out of the buoyancy cavity;

[0011] A fixed connector is provided on the housing and is used to connect to a fixed rope.

[0012] By adopting the above technical solution, the valve device, through the coordinated work of its various parts, utilizes the buoyancy cavity to enable the valve to be placed reasonably underwater, while connecting to external systems through pipelines and using fixed connectors to ensure the device's position is fixed. This provides a complete and effective solution for underwater-related work, and the installation of inspection openings and covers facilitates later maintenance and repair.

[0013] In one embodiment, the bottom of the housing is a sealed structure, and the access opening is located at the top of the housing.

[0014] In one embodiment, the interior of the housing is provided with a plurality of stiffening plates, which divide the buoyancy cavity into a plurality of buoyancy sections that are sealed and isolated from each other. The valve is located in one of the buoyancy sections, and the pipe passes through at least one of the buoyancy sections.

[0015] In one embodiment, a plurality of the buoyancy components are evenly arranged along the circumference of the valve.

[0016] In one embodiment, the housing has a frustum structure, and the lateral dimension of the bottom of the housing is smaller than the lateral dimension of the top of the housing.

[0017] In one embodiment, the cover plate has a cover plate cavity communicating with the buoyancy cavity, a portion of the valve is housed in the buoyancy cavity, and another portion of the valve is housed in the cover plate cavity.

[0018] In one embodiment, a fastener is provided between the cover plate and the housing, and the fastener is detachably connected between the cover plate and the housing.

[0019] In one embodiment, the pipeline includes a first pipeline segment and a second pipeline segment perpendicular to and connected to the first pipeline segment. The first pipeline segment is connected to the valve. The first pipeline segment has a second communication port extending out of the buoyancy cavity. The second pipeline segment has two opposing second communication ports extending out of the buoyancy cavity.

[0020] In one embodiment, the number of fixed connectors is two, and the two fixed connectors are respectively located on both sides of the second connection port of the first pipe section.

[0021] Secondly, a nuclear power plant equipment is provided, including a main body of the nuclear power plant equipment and the aforementioned valve device, wherein the valve device is disposed on the main body of the nuclear power plant equipment.

[0022] By adopting the above technical solutions, the valve device's unique buoyancy design and fixing method may make it more stable and reliable during installation and use, reducing the risk of failure caused by factors such as vibration and water flow impact. The removable cover and reasonable cavity design facilitate valve inspection and maintenance, reducing the operation and maintenance costs and downtime of nuclear power plant equipment. This innovative combination provides new ideas and solutions for improving and optimizing the performance of nuclear power plant equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the valve device provided in an embodiment of this utility model.

[0025] Figure 2 This is an exploded view of the valve device provided in an embodiment of this utility model.

[0026] Figure 3 This is an exploded view of the valve device provided in an embodiment of this utility model.

[0027] The labels for the attached figures are as follows:

[0028] 100. Valve devices;

[0029] 1. Housing; 2. Cover plate; 3. Valve; 4. Pipeline; 5. Fixed connectors; 6. Fasteners;

[0030] 11. Buoyancy cavity; 12. Inspection opening; 13. Rib plate; 21. Cover plate cavity; 41. First connecting port; 42. Second connecting port; 43. First pipe section; 44. Second pipe section;

[0031] 111. Buoyancy Department. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0036] like Figure 1 and Figure 2 As shown, the valve device 100 provided in this embodiment of the present invention is applied in the field of underwater dredging. In practical application scenarios, the valve device 100 can be used in nuclear power plant equipment.

[0037] The valve device 100 provided in this embodiment includes:

[0038] The shell 1 is provided with a buoyancy cavity 11 and an inspection opening 12 communicating with the buoyancy cavity 11;

[0039] Cover plate 2, connected to housing 1 and used for opening and closing maintenance opening 12;

[0040] Valve 3 is located in the buoyancy cavity 11;

[0041] Pipeline 4 is connected to valve 3. Pipeline 4 is provided with a first communication port 41 connected to valve 3 and a second communication port 42 extending out of buoyancy cavity 11.

[0042] Fixed connector 5 is provided on housing 1 and is used to connect with fixed rope.

[0043] Specifically, the housing 1 is the main structure of the entire valve device 100. It is equipped with a buoyancy chamber 11, which is the key part that enables the device to obtain buoyancy in water. The presence of the buoyancy chamber 11 allows the entire device to float on the water surface or be in a specific position in the water. In addition, the housing 1 also has a maintenance opening 12 that communicates with the buoyancy chamber 11. This opening provides a passage for subsequent inspection and maintenance of the interior of the buoyancy chamber 11, especially for components such as the valve 3 located therein.

[0044] The cover plate 2 is connected to the housing 1, and its main function is to open and close the maintenance opening 12. When it is necessary to inspect the inside of the buoyancy cavity 11, the cover plate 2 can be opened; during normal use, closing the cover plate 2 can ensure the sealing and integrity of the buoyancy cavity 11, and prevent water or other impurities from entering the buoyancy cavity 11 and affecting the normal operation of the valve 3.

[0045] Valve 3, housed within the buoyancy chamber 11, is the core component of the device. The specific function of valve 3 varies depending on its type and design, and may include controlling the flow of fluid, regulating flow rate, etc. Because it is placed within the buoyancy chamber 11, valve 3 can utilize the buoyancy of the chamber when operating underwater, avoiding direct exposure to external factors such as excessive water pressure. This also facilitates installation and positioning.

[0046] Pipeline 4 is connected to valve 3 and serves to transport fluid. Pipeline 4 has two connection ports. The first connection port 41 is connected to valve 3 and is used to receive or output fluid controlled by valve 3. The second connection port 42 extends out of the buoyancy cavity 11, allowing the fluid to connect and interact with other external equipment or systems, such as a suction system, to achieve specific tasks such as underwater dredging.

[0047] The fixed connector 5 is located on the housing 1 and is used to connect with the fixed rope. This design allows the valve device 100 to be connected to other fixed objects (such as fixed piles on the shore, underwater anchor points, etc.) in the water via the fixed rope, thereby fixing the position of the device and preventing it from moving randomly under the action of external forces such as water flow, ensuring the stability and reliability of the device during operation.

[0048] By adopting the above technical solution, the valve device 100, through the coordinated work of its various parts, enables the valve 3 to be placed reasonably underwater using the buoyancy cavity 11, while connecting to the external system through the pipeline 4 and ensuring the fixed position of the device using the fixed connector 5. This provides a complete and effective solution for underwater related work, and the setting of the inspection opening 12 and the cover plate 2 also facilitates later maintenance and repair.

[0049] In one embodiment, the bottom of the housing 1 is a sealed structure, and the access opening 12 is located at the top of the housing 1.

[0050] Specifically, the bottom of the shell 1 adopts a sealed structure, mainly to prevent external liquids (such as water) from entering the buoyancy chamber 11 from the bottom. In underwater operation, the bottom is in direct contact with water and may be subjected to significant water pressure. If the bottom is not sealed, water will enter the buoyancy chamber 11, which will not only affect the buoyancy performance of the entire device, causing it to sink or become unstable, but may also damage components such as valves 3 located in the buoyancy chamber 11, affecting their normal operation.

[0051] The sealed bottom provides a relatively dry and stable working environment for the internal valve 3 and other components, reducing the risk of corrosion, short circuits and other problems caused by liquid intrusion, thereby extending the service life of the components and improving the reliability and stability of the device.

[0052] Only when the bottom is well sealed can the buoyancy chamber 11 effectively store air or other low-density media, thereby generating sufficient buoyancy to support the entire device and enable it to maintain a proper position and state in the water.

[0053] The access opening 12 is located at the top of the housing 1, making inspection and maintenance work more convenient. When it is necessary to inspect, repair, or replace components such as valves 3 inside the buoyancy chamber 11, operators can directly open the access opening 12 from above the device without having to remove the entire device from the water or perform complex operations. This design conforms to ergonomic principles, making maintenance work more efficient and convenient.

[0054] When the access opening 12 is opened for maintenance, the possibility of liquid entering the buoyancy chamber 11 is smaller compared to other locations (such as the side or bottom) because the opening is located at the top. Since water naturally flows downwards under normal conditions, the probability of water intrusion when the top opening is opened is relatively low, further ensuring the sealing of the device and the safety of its components.

[0055] In underwater working environments, the top opening design is more in line with practical application scenarios. Typically, when the device is operating in water, the top is relatively easier to access and operate. For example, the top opening can be operated directly from the surface without the need for special diving equipment or complex underwater operating procedures, reducing maintenance costs and operational difficulty.

[0056] In one embodiment, the interior of the housing 1 is provided with a plurality of stiffening plates 13, which divide the buoyancy cavity 11 into a plurality of buoyancy sections 111 that are sealed and isolated from each other. A valve 3 is provided in one of the buoyancy sections 111, and a pipe 4 passes through at least one of the buoyancy sections 111.

[0057] Specifically, the shell 1 is internally equipped with multiple stiffening plates 13, which serve to separate the buoyancy cavities 11. Through the separation by the stiffening plates 13, the originally single buoyancy cavity 11 is divided into multiple mutually sealed and isolated buoyancy sections 111. This design serves several purposes. Firstly, it increases the structural strength of the shell 1, as the stiffening plates 13 can distribute and withstand external pressure (such as water pressure), preventing deformation or damage to the shell 1. Secondly, dividing the buoyancy cavity 11 into multiple independent buoyancy sections 111 improves the reliability and safety of the device. Even if one buoyancy section 111 is damaged or leaks, the other buoyancy sections 111 can still remain sealed and continue to provide buoyancy, ensuring that the entire device does not completely lose buoyancy due to localized damage, thereby preventing the device from sinking.

[0058] Valve 3 is placed within one of the buoyancy sections 111, an arrangement that offers several advantages. First, the buoyancy section 111 provides valve 3 with a relatively stable and protected installation space. During operation, valve 3 may be affected by external factors such as water flow impact and water pressure changes. Being within the buoyancy section 111 reduces the direct impact of these adverse factors on valve 3, ensuring its normal operation. Second, placing valve 3 within a specific buoyancy section 111 facilitates its positioning and fixation, making its installation more secure and reducing the risk of loosening or displacement due to vibration. Furthermore, the independent buoyancy section 111 allows for individual maintenance and repair of valve 3. When valve 3 malfunctions, the buoyancy section 111 can be operated more precisely without affecting the normal operation of other buoyancy sections 111 and the entire device.

[0059] Pipe 4 is routed through at least one buoyancy section 111: Pipe 4 is connected to valve 3 and is routed through at least one buoyancy section 111. This means that the arrangement of pipe 4 within the device is carefully designed. The way pipe 4 is routed through the buoyancy section 111 makes the connection between pipe 4 and valve 3 more compact and stable, ensuring the sealing and smooth flow of fluid during transmission. Simultaneously, since the buoyancy section 111 is a sealed isolation, proper sealing treatment is required when pipe 4 is routed through it to prevent fluid leakage into the buoyancy section 111 and affecting buoyancy performance. Furthermore, by rationally selecting the buoyancy section 111 through which pipe 4 is routed, the layout of the entire device can be optimized, making the routing of pipe 4 more rational, facilitating connection with external equipment, and improving the working efficiency of the device.

[0060] Overall, this design improves the structural strength, reliability, safety, and efficiency of the device by using stiffeners 13 to separate the buoyancy cavity 11 and by rationally arranging valves 3 and pipes 4 in the buoyancy section 111. It also facilitates the maintenance and repair of the device and is an optimized design that takes into account multiple factors.

[0061] In one embodiment, a plurality of buoyancy components 111 are evenly arranged along the circumference of the valve 3.

[0062] Specifically, multiple buoyancy components 111 are evenly distributed around the circumference of the valve 3, ensuring that the valve 3 receives relatively balanced buoyancy support in all directions. In an underwater environment, external forces such as water flow may exert forces on the valve 3 in different directions. If the buoyancy components 111 are not evenly distributed, the valve 3 may tilt or shift due to unbalanced forces, affecting its normal operation and the stability of its connection with the pipeline 4. The evenly distributed buoyancy components 111 ensure that the valve 3 receives appropriate buoyancy in all directions, maintaining a relatively stable position and attitude, and reducing the risk of failure due to uneven forces.

[0063] like Figure 3 As shown, in one embodiment, the housing 1 has a frustum structure, and the lateral dimension of the bottom of the housing 1 is smaller than the lateral dimension of the top of the housing 1.

[0064] Specifically, the frustum-shaped shell 1 has a smaller lateral dimension at the bottom than at the top, resulting in a relatively low center of gravity for the entire device. In underwater working environments, a lower center of gravity helps improve the stability of the device and reduces the possibility of it tilting or overturning due to external forces such as water flow impact and waves. For example, when the device is impacted by lateral water flow, its narrower bottom and lower center of gravity help it maintain balance better, reducing the risk of being overturned by the water flow and ensuring that internal components such as valve 3 can operate normally and stably.

[0065] The shape of the shell 1 is advantageous for the distribution and utilization of buoyancy. As the lateral dimension of the shell 1 gradually increases from bottom to top, the volume of displaced liquid increases at the same immersion depth, thereby obtaining greater buoyancy. At the same time, the larger top dimension provides a larger buoyancy support surface on the water surface, making the device more stable in a floating state, helping to maintain the device's position on the water surface, and facilitating connection and operation with external equipment.

[0066] The frustum-shaped housing 1 has a larger top dimension, providing more spacious operating space for installation and maintenance. For example, when installing internal components such as valves 3 and pipes 4, the larger top opening allows operators to access the components more easily, improving installation efficiency. During later maintenance and repairs, it also facilitates personnel entering the housing 1 to inspect, repair, and replace various components. Furthermore, the larger top dimension also allows for the placement of auxiliary equipment or connecting components, resulting in a more rational layout of the entire device.

[0067] From a hydrodynamic perspective, the frustum shape, narrow at the bottom and wide at the top, can reduce the resistance of the water flow to the device. When the device is operating in water, the water flows over its surface, and this shape allows the water to flow more smoothly, avoiding the formation of large eddies and resistance on the device surface, reducing the impact of the water flow on the device, thereby reducing energy loss and improving the efficiency of the device when operating underwater.

[0068] Frustum structures can optimize material usage to some extent. Compared to other shapes, frustum structures may save more material while meeting the same strength and buoyancy requirements. A smaller base size reduces the amount of material used at the bottom, while a larger top size allows for more efficient material allocation while ensuring buoyancy and operating space, thus reducing manufacturing costs.

[0069] In summary, the design of the shell 1 as a frustum structure, with the bottom lateral dimension of the shell 1 being smaller than the top lateral dimension, takes into account factors such as structural stability, buoyancy characteristics, ease of installation and maintenance, hydrodynamics, and cost. This is an optimized design that helps improve the performance and practicality of the valve device 100 in underwater operation.

[0070] In one embodiment, the cover plate 2 is provided with a cover plate cavity 21 that communicates with the buoyancy cavity 11, a part of the valve 3 is housed in the buoyancy cavity 11, and another part of the valve 3 is housed in the cover plate cavity 21.

[0071] Specifically, this design effectively utilizes the space between the cover plate 2 and the shell 1, arranging different parts of the valve 3 in the buoyancy cavity 11 and the cover plate cavity 21 respectively, making the overall structure of the device more compact. Within a limited space, the valve 3 is rationally positioned, avoiding space waste or unreasonable layout problems caused by the large size of the valve 3. In this way, a large valve 3 can be accommodated without increasing the overall volume of the device, meeting the requirements for valve 3 specifications in actual operation.

[0072] Since a portion of valve 3 is located within the cover plate cavity 21, opening the cover plate 2 provides easy access to this part of valve 3 when inspection and maintenance are required. This design eliminates the need for complex disassembly or removal of the entire device from the water; simply opening the cover plate 2 allows for inspection, repair, or replacement of parts of valve 3, significantly reducing the difficulty and workload of maintenance and improving efficiency. Furthermore, distributing valve 3 across two cavities allows for clearer observation of different parts of valve 3 during inspection, aiding in the identification of potential problems.

[0073] In summary, the cover plate 2 is provided with a cover plate cavity 21 that communicates with the buoyancy cavity 11. A part of the valve 3 is housed in the buoyancy cavity 11, and the other part of the valve 3 is housed in the cover plate cavity 21. This scheme has significant advantages in terms of space utilization, installation and fixation, inspection and maintenance, sealing performance and functional realization. It is a carefully designed scheme that is conducive to improving the overall performance of the device.

[0074] In one embodiment, a fastener 6 is connected between the cover plate 2 and the housing 1, and the fastener 6 is detachably connected between the cover plate 2 and the housing 1.

[0075] Specifically, the presence of fastener 6 ensures that the cover plate 2 is securely connected to the housing 1, preventing it from easily falling off or loosening during normal operation. In complex underwater conditions, the device may be subjected to external forces such as water flow impact and water pressure changes. The connection strength provided by fastener 6 ensures a tight fit between the cover plate 2 and the housing 1, maintaining the sealing of the buoyancy cavity 11, preventing water or other impurities from entering the cavity, and protecting the normal operation of critical components such as valve 3.

[0076] Because fastener 6 is a detachable connection between cover plate 2 and housing 1, it greatly facilitates the inspection and maintenance of the device. When it is necessary to inspect, repair, or replace components such as valves 3 and pipes 4 inside the buoyancy cavity 11, operators can easily open cover plate 2 by removing fastener 6 to directly access the components inside the cavity without performing complex disassembly operations. This design improves inspection efficiency and reduces maintenance costs and difficulty.

[0077] During installation, the sealing performance between the cover plate 2 and the housing 1 can be ensured by properly selecting and using fasteners 6. For example, sealing elements such as gaskets may be installed at the connection between the cover plate 2 and the housing 1. The tightening effect of fasteners 6 allows the gaskets to better perform their sealing function, preventing liquid or gas leakage. During disassembly and reinstallation, as long as the fasteners 6 are operated correctly, the sealing performance can be guaranteed to remain unaffected, maintaining the normal operating condition of the device.

[0078] The detachable connection provides the cover plate 2 with a degree of flexibility. If the cover plate 2 is damaged or needs to be replaced with a cover plate 2 of a different function, the fastener 6 can be easily removed, the old cover plate 2 can be taken off, and the new cover plate 2 can be installed. In addition, for different usage scenarios or working conditions, fasteners 6 of different specifications or materials can be replaced as needed to meet the specific requirements of the device and improve its adaptability.

[0079] During the production and assembly of the device, detachable fasteners 6 are used to connect the cover plate 2 and the housing 1, simplifying the assembly process. Workers can quickly and accurately install the cover plate 2 onto the housing 1, and if problems are found during subsequent quality inspection and debugging, it can be easily disassembled and adjusted. This design improves production efficiency, reduces production costs, and is beneficial for the mass production and widespread application of the product.

[0080] In summary, the fastener 6 connecting the cover plate 2 and the housing 1 provides a detachable connection between the cover plate 2 and the housing 1. This design not only ensures the connection strength and sealing performance of the device, but also brings many advantages to the device's maintenance, flexibility, and production assembly. It is a practical and efficient design solution.

[0081] In one embodiment, the pipe 4 includes a first pipe section 43 and a second pipe section 44 that is perpendicular to and communicates with the first pipe section 43. The first pipe section 43 is communicated with the valve 3. The first pipe section 43 is provided with a second communication port 42 that extends out of the buoyancy cavity 11. The second pipe section 44 is provided with two opposite second communication ports 42 that extend out of the buoyancy cavity 11.

[0082] Specifically, the first pipe section 43 and the second pipe section 44 are perpendicularly connected to each other, forming a "T"-shaped structure. This layout can flexibly adapt to different installation spaces and working environments. Within the limited buoyancy cavity 11, this design can make full use of space, avoid excessive bending or mutual interference of the pipes 4, and make the arrangement of the pipes 4 more compact and reasonable.

[0083] The vertical design allows pipe 4 to better distribute stress when under load. For example, when fluid flows in pipe 4 and generates pressure, the perpendicular pipe sections 4 can distribute the pressure in different directions, reducing stress concentration in a single direction, enhancing the overall structural stability of pipe 4, and reducing the risk of pipe 4 being damaged due to excessive pressure.

[0084] The first pipe section 43 is directly connected to the valve 3 and has a second connection port 42 extending beyond the buoyancy cavity 11. This design enables the valve 3 to be connected to external equipment or systems, allowing fluid to flow smoothly from the valve 3 to the outside or from the outside into the valve 3. For example, in underwater dredging scenarios, this port can be connected to a suction system to achieve the suction and discharge of sludge.

[0085] The second pipe section 44 has two opposing second connecting ports 42 extending beyond the buoyancy cavity 11. This design increases the connection points between the pipe 4 and the outside, bringing more functional possibilities to the device. On the one hand, different external devices or systems can be connected simultaneously to achieve multidirectional fluid transmission, such as connecting different processing devices to process different types of fluids; on the other hand, in some working scenarios that require circulating or bidirectional flow, the two opposing ports can meet the requirements of fluid circulation or bidirectional flow.

[0086] Through the connection between the first pipe section 43 and the valve 3, the valve 3 can control the fluid entering the pipe 4, such as adjusting the flow rate and switching it on and off. The multiple second connection ports 42 extending outside the buoyancy chamber 11 provide channels for fluid transmission, enabling the device to be effectively connected to external suction systems, treatment systems, etc., to realize fluid transmission and control in specific tasks such as underwater dredging.

[0087] The design of this pipe 4 structure and connection ports allows the device to adapt to different working scenarios and needs. In different underwater projects, the connection method between pipe 4 and external equipment can be flexibly adjusted according to specific working requirements, and different functions can be achieved by using different connection ports, thus improving the versatility and adaptability of the device.

[0088] In one embodiment, there are two fixed connectors 5, which are located on both sides of the second communication port 42 of the first pipe section 43.

[0089] Specifically, the fixed connector 5 consists of two anchor rings, providing a reliable fixing method for the entire device. The anchor rings are typically connected to fixing ropes or other fixing devices to stably secure the device in a specific position. The two anchor rings are located on either side of the second connecting port 42 of the first pipe section 43. This symmetrical distribution ensures that the device is subjected to external forces (such as water flow impact) more evenly, reducing the possibility of tilting or displacement and thus guaranteeing the stability of the device during underwater operation. For example, in underwater dredging operations, the device may be affected by water flow; this symmetrical fixing method ensures that the device remains in a suitable position for effective dredging work.

[0090] Placing anchor rings on both sides of the second connecting port 42 of the first pipe section 43 helps protect the pipe 4 and the connecting port. When the device is subjected to external forces, the anchor rings bear most of the tensile or compressive forces, preventing these forces from acting directly on the pipe 4 and the connecting port, thus reducing the risk of damage to the pipe 4 and the connecting port due to stress. This is crucial for ensuring the normal operation of the device and the smooth flow of fluid, because if the pipe 4 or the connecting port is damaged, it may lead to fluid leakage, affecting the efficiency of the device or even causing it to malfunction.

[0091] The two anchoring rings simplify the installation and operation of the device. During installation, operators can easily connect the fixing ropes to the anchoring rings and adjust the rope length and fixing position as needed. This design reduces the difficulty and complexity of installation and improves work efficiency. Furthermore, subsequent maintenance and adjustments to the device's position can be achieved quickly and easily by manipulating the anchoring rings and ropes.

[0092] This design is consistent with the overall structure of the device. The first pipe section 43, as a crucial part connecting the device to the outside, has anchor rings positioned on both sides of its second connecting port 42, conforming to the overall layout and functional requirements of the device. This design ensures that the position of the fixed connector 5 does not affect the normal operation and fluid transmission of the pipe 4, while effectively securing the device, demonstrating the rationality and integrity of the design.

[0093] In summary, the number of fixed connectors 5 is two, and the two fixed connectors 5 are located on both sides of the second connecting port 42 of the first pipe section 43. The fixed connector 5 is an anchoring ring. This scheme takes into account many aspects such as the fixed stability of the device, the protection of key components, the convenience of installation and operation, and the coordination with the overall structure. It is a design scheme that helps to improve the performance and practicality of the device.

[0094] Secondly, a nuclear power plant equipment is provided, including a nuclear power plant equipment body and the aforementioned valve device 100, wherein the valve device 100 is disposed on the nuclear power plant equipment body.

[0095] By adopting the above technical solutions, the unique buoyancy design and fixing method of valve device 100 may make it more stable and reliable during installation and use, reducing the risk of failure caused by factors such as vibration and water flow impact; the detachable cover plate 2 and the reasonable cavity design facilitate the inspection and maintenance of valve 3, reducing the operation and maintenance costs and downtime of nuclear power plant equipment. This innovative combination provides new ideas and solutions for the performance improvement and optimization of nuclear power plant equipment.

[0096] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve device, characterized in that, include: The shell is provided with a buoyancy cavity and an inspection opening communicating with the buoyancy cavity; A cover plate, connected to the housing and used to open and close the access opening; A valve is located in the buoyancy cavity; A pipe is connected to the valve, and the pipe is provided with a first communication port connected to the valve and a second communication port extending out of the buoyancy cavity; A fixed connector is provided on the housing and is used to connect to a fixed rope.

2. The valve device as described in claim 1, characterized in that, The bottom of the housing is a sealed structure, and the inspection opening is located at the top of the housing.

3. The valve device as described in claim 1, characterized in that, The shell has multiple stiffening plates inside, which divide the buoyancy cavity into multiple buoyancy sections that are sealed and isolated from each other. The valve is located in one of the buoyancy sections, and the pipe passes through at least one of the buoyancy sections.

4. The valve device as described in claim 3, characterized in that, Multiple buoyancy components are evenly arranged along the circumference of the valve.

5. The valve device as claimed in claim 1, characterized in that, The housing has a frustum structure, and the lateral dimension of the bottom of the housing is smaller than the lateral dimension of the top of the housing.

6. The valve device as claimed in claim 1, characterized in that, The cover plate has a cover plate cavity that communicates with the buoyancy cavity, a part of the valve is housed in the buoyancy cavity, and the other part of the valve is housed in the cover plate cavity.

7. The valve device as claimed in claim 6, characterized in that, Fasteners connect the cover plate and the housing, and the fasteners are detachably connected to the cover plate and the housing.

8. The valve device as claimed in claim 1, characterized in that, The pipeline includes a first pipeline segment and a second pipeline segment perpendicular to and connected to the first pipeline segment. The first pipeline segment is connected to the valve. The first pipeline segment has a second connecting port extending out of the buoyancy cavity. The second pipeline segment has two opposite second connecting ports extending out of the buoyancy cavity.

9. The valve device as claimed in claim 8, characterized in that, The number of fixed connectors is two, and the two fixed connectors are respectively located on both sides of the second connection port of the first pipe section.

10. A nuclear power plant equipment, characterized in that, It includes the main body of the nuclear power plant equipment and the valve device as described in any one of claims 1 to 9, wherein the valve device is disposed on the main body of the nuclear power plant equipment.

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