A water jet pumping siphon starting device for a marine system of a nuclear power plant

Abstract

The utility model discloses a nuclear power station is with sea work system water jet pumping siphon starting device, include: water storage mechanism and install at least one group siphon pumping assembly on water storage mechanism and the central control module of remote control water storage mechanism and siphon pumping assembly, be provided with the water storage cavity on water storage mechanism, siphon pumping assembly includes: water outlet pipe, first valve and siphon pipe, and one end of water outlet pipe is installed on water storage mechanism through first valve, and the other end of water outlet pipe is linked with the communication of inspection well, first valve is connected with central control module, controls water outlet pipe and water storage cavity intercommunication or close, and one end of siphon pipe sets up on water outlet pipe. Relieve the operation difficulty and labor intensity, and personnel need not frequently adjust, improve the security, also save the energy loss, more energy -conserving environmental protection. Through remote control can provide good safety distance for operator, further improve the security, and it is more convenient and labor saving to operate.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power maintenance technology, and in particular to a water jet pumping siphon start-up device for marine engineering systems used in nuclear power plants. Background Technology

[0002] Some air conditioning units in nuclear power plants use seawater for cooling. Due to the dredging work of the circulating cooling water intake tunnel during the overhaul of the nuclear power plant, the external water intake tunnel needs to be isolated. At this time, the circulating cooling water supply is lost, and the forebay water needs to be sucked into the circulating cooling water tunnel inside the plant through a siphon device to ensure the normal operation of the circulating cooling water of the air conditioning units.

[0003] The currently used siphon system employs a vacuum pump positioned above the pipe between the forebay water and the inspection well. Under the combined effect of gravity and atmospheric pressure, a siphon effect is created, allowing forebay water to continuously flow into the inspection well, thus completing the water transport. However, the existing siphon system is shared by two units. Before each major overhaul, each unit is assembled and installed using a crane. After the overhaul, the unit is disassembled, and the rubber pipes, flanges, and bolts are disassembled and maintained. Due to the limitations of the plant structure, the crane cannot perform vertical lifting during disassembly and assembly; the unit must be manually pulled to the overflow hole, resulting in uneven lifting and slant. During operation, staff frequently need to descend to the overflow hole (poolside work) for operation and equipment checks. In case of an accident, personnel falling into the water will be directly sucked into the tunnel, posing a safety risk. Furthermore, the system consumes a significant amount of energy during water transport, increasing costs, and is time-consuming and labor-intensive to operate. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a water jet pumping siphon start-up device for marine engineering systems used in nuclear power plants.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A siphon pumping start-up device for a marine engineering system used in nuclear power plants is constructed, comprising: a water storage mechanism and at least one set of siphon pumping components installed on the water storage mechanism, and a central control module for remotely controlling the water storage mechanism and the siphon pumping components; the water storage mechanism is provided with a water storage chamber; the siphon pumping components include: an outlet pipe, a first valve, and a siphon pipe, one end of the outlet pipe is installed on the water storage mechanism through the first valve, and the other end of the outlet pipe is connected to an inspection well; the first valve is connected to the central control module to control the connection or closure of the outlet pipe and the water storage chamber; one end of the siphon pipe is located on the outlet pipe, and the other end of the siphon pipe is connected to the forebay water; when water flows rapidly through the outlet pipe, a siphon phenomenon is generated at the other end of the siphon pipe; after the first valve closes the connection between the outlet pipe and the water storage chamber, the other end of the siphon pipe will continue to generate a siphon phenomenon under atmospheric pressure, squeezing the water in the forebay water into the inspection well.

[0006] Furthermore, the siphon pumping assembly also includes a pressure relief component, which is disposed on the outlet pipe or the siphon pipe and connected to the central control module. By controlling the connection or isolation of the outlet pipe or the siphon pipe from the outside, the duration of the siphon phenomenon can be controlled.

[0007] Furthermore, the pressure relief component includes a pressure relief pipe and a pressure relief valve. The pressure relief pipe is installed on the water outlet pipe or the siphon pipe and is connected to its interior. The pressure relief valve is installed on the pressure relief pipe and is connected to the central control module to control the water outlet pipe or the siphon pipe to communicate with or isolate from the outside world.

[0008] Furthermore, the siphon pumping assembly also includes a flow control valve disposed at the lower part of the outlet pipe or on the siphon pipe, the flow control valve being connected to the central control module.

[0009] Furthermore, the end of the pressure relief pipe that connects to the outside is configured as a downward bend.

[0010] Furthermore, the water storage mechanism includes: a water storage tank, a mounting base, a water inlet pipe, and a water inlet valve. The water storage tank is mounted on the mounting base, the water storage chamber is located in the water storage tank, the water inlet pipe is mounted on the water storage tank and communicates with the water storage chamber, and the water inlet valve is mounted on the water inlet pipe and is connected to the central control module to control the water inlet volume in the water storage chamber.

[0011] Furthermore, the water inlet valve includes: a suspension component disposed in the water storage chamber and a second valve disposed on the water inlet pipe and cooperating with the suspension component. When the suspension component moves away from the second valve, the second valve opens the connection between the water inlet pipe and the water storage chamber; when the suspension component moves closer to the second valve, the second valve closes the connection between the water inlet pipe and the water storage chamber.

[0012] Furthermore, the water storage mechanism also includes an exhaust component installed on the water storage tank. The exhaust component includes an exhaust pipe and an exhaust valve. The exhaust pipe is installed on the water storage tank and is connected to the water storage chamber. The exhaust valve is installed on the exhaust pipe and is connected to the central control module to control whether the exhaust pipe is connected to or isolated from the outside. The end of the exhaust pipe near the outside is configured as a downward bend.

[0013] Furthermore, the water storage mechanism also includes a drain component installed on the water storage tank. The drain component includes a drain pipe and a drain valve. The drain pipe is located at the lowest point of the water storage tank and is connected to the water storage cavity. The drain valve is installed on the drain pipe and is connected to the central control module to control whether the drain pipe is connected to or isolated from the outside.

[0014] Furthermore, the mounting base is provided with at least one reinforcing rib to support the water outlet pipe.

[0015] The following are the beneficial effects of implementing this utility model: This application utilizes a water storage chamber on a water storage mechanism. One end of the outlet pipe is installed on the water storage mechanism via a first valve, and the other end of the outlet pipe is connected to an inspection well. The first valve is connected to a central control module to control the connection or closure of the outlet pipe and the water storage chamber. One end of a siphon pipe is installed on the outlet pipe, and the other end of the siphon pipe is connected to the forebay water. Under atmospheric pressure, the other end of the siphon pipe continuously generates a siphon effect, drawing water from the forebay through the siphon pipe and outlet pipe into the inspection well. The entire siphon process is automatic and requires no equipment intervention, reducing operational difficulty and labor intensity. It eliminates the need for frequent adjustments by personnel, improving safety and saving energy, making it more energy-efficient and environmentally friendly. Remote control provides operators with a safe distance, further enhancing safety, making operation more convenient and labor-saving, reducing labor intensity, and improving adjustment efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] In the attached image: Figure 1 This is a schematic diagram of the installation position of the water jet pumping siphon start-up device for a marine engineering system used in nuclear power plants in some embodiments of this utility model; Figure 2 This is an internal side view of the water jet pumping siphon start-up device for a marine engineering system used in nuclear power plants in some embodiments of this utility model; Figure 3 This is a three-dimensional structural schematic diagram of the water jetting and pumping siphon start-up device for a marine engineering system used in nuclear power plants in some embodiments of this utility model; Figure 4 This is an internal front view of the water jet pumping siphon start-up device for a marine engineering system used in a nuclear power plant, according to some embodiments of this utility model. Figure 5 This is a schematic diagram of the installation position of the sewage discharge component in some embodiments of this utility model; Figure 6 This is a three-dimensional structural schematic diagram of the siphon pumping assembly in some embodiments of this utility model.

[0018] Explanation of markings in the diagram Water storage mechanism 1, water storage chamber 11, water storage tank 12, mounting base 13, water inlet pipe 14, water inlet valve 15, suspension component 151, second valve 152, venting component 16, venting pipe 161, venting valve 162, sewage discharge component 17, sewage discharge pipe 171, sewage discharge valve 172, reinforcing rib 18, siphon pumping assembly 2, water outlet pipe 21, first valve 22, siphon pipe 23, pressure relief component 24, pressure relief pipe 241, pressure relief valve 242, flow control valve 25, central control module 3, inspection well 4, forebay water 5. Detailed Implementation

[0019] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0020] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0022] Please see Figures 1 to 6 The first embodiment of the present invention provides a water jetting and pumping siphon start-up device for a marine engineering system used in a nuclear power plant. The water jetting and pumping siphon start-up device for a marine engineering system used in a nuclear power plant includes: a water storage mechanism 1 and at least one set of siphon pumping components 2 installed on the water storage mechanism 1, as well as a central control module 3 for remotely controlling the water storage mechanism 1 and the siphon pumping components 2. The water storage mechanism 1 is provided with a water storage chamber 11. The siphon pumping assembly 2 includes: an outlet pipe 21, a first valve 22, and a siphon pipe 23. One end of the outlet pipe 21 is installed on the water storage mechanism 1 through the first valve 22, and the other end of the outlet pipe 21 is connected to the inspection well 4. The first valve 22 is connected to the central control module 3 to control the connection or closure of the outlet pipe 21 and the water storage chamber 11. One end of the siphon pipe 23 is set on the outlet pipe 21, and the other end of the siphon pipe 23 is connected to the forebay water 5. When water flows quickly through the outlet pipe 21, the other end of the siphon pipe 23 generates a siphon phenomenon. After the first valve 22 closes the connection between the outlet pipe 21 and the water storage chamber 11, the other end of the siphon pipe 23 will continue to generate a siphon phenomenon under the action of atmospheric pressure, squeezing the water in the forebay water 5 into the inspection well 4.

[0023] This application uses a water storage chamber 11 set on a water storage mechanism 1. One end of the water outlet pipe 21 is installed on the water storage mechanism 1 through a first valve 22. The other end of the water outlet pipe 21 is connected to the inspection well 4. The first valve 22 is connected to the central control module 3 to control the connection or closure of the water outlet pipe 21 and the water storage chamber 11. One end of the siphon pipe 23 is set on the water outlet pipe 21, and the other end of the siphon pipe 23 is connected to the forepool water 5. The entire nuclear power plant's marine engineering system water jetting and pumping siphon start-up device can be directly installed above the forebay water 5. During overhauls, a large amount of water is injected into the storage chamber 11. Then, the central control module 3 opens the first valve 22, allowing the water in the storage chamber 11 to flow out from the outlet pipe 21 at the bottom. Under gravity, the water flows at high speed in the outlet pipe 21, expelling air from it. Under atmospheric pressure, a siphon effect occurs at the end of the siphon pipe 23, which is partially connected to the outlet pipe 21. Water from the forebay water 5 is continuously drawn into the outlet pipe 21 through the siphon pipe 23, and then flows along the outlet pipe 21... The high-speed water in section 1 flows into inspection well 4. Then, the central control module 3 closes the first valve 22, cutting off the connection between the end of the outlet pipe 21 and the water storage chamber 11. At this time, there is no air in the outlet pipe 21 and the water storage chamber 11. Under the action of atmospheric pressure, the other end of the siphon pipe 23 will continue to generate a siphon phenomenon, siphoning the water in the forebay 5 into inspection well 4 through the siphon pipe 23 and the outlet pipe 21. The entire siphon process does not require equipment intervention and is carried out automatically, reducing the difficulty of operation and labor intensity. It does not require frequent adjustments by personnel, improves safety, and saves energy consumption, making it more energy-efficient and environmentally friendly.

[0024] The central control module 3 can control the opening and closing of the first valve 22 and the water storage mechanism 1 via a pneumatic, electric, or mechanical valve remote transmission mechanism. Remote control provides operators with a safe distance, further improving safety, making operation more convenient and labor-saving, reducing labor intensity, and improving regulation efficiency. When the central control module 3 uses a mechanical valve remote transmission mechanism, it is less prone to damage, has high reliability, and can be used in more complex environments. Pneumatic or electric central control modules 3 are more labor-saving and convenient to operate, reducing labor intensity and saving space. Different types of central control modules 3 can be selected according to different usage environments, thereby expanding the scope of application.

[0025] Multiple sets of siphon pumping components 2 can be installed on the water storage mechanism 1, and the central control module 3 can control the different siphon pumping components 2 respectively, thereby enabling more reasonable adjustment of the siphon pumping rate and making it suitable for more usage environments.

[0026] The method involves using a siphon principle to transport water from above the forebay 5 to the inspection well 4, thus avoiding the need to create a hole at the bottom of the forebay 5, which would affect the sealing of the forebay 5, easily damage the overall structure of the forebay 5, increase safety risks, and make operation inconvenient.

[0027] Please see Figures 1 to 6 In some embodiments, the siphon pumping assembly 2 further includes a pressure relief component 24, which is disposed on the outlet pipe 21 or the siphon pipe 23 and connected to the central control module 3 to control the connection or isolation of the outlet pipe 21 or the siphon pipe 23 with the outside world, so as to control the duration of the siphon phenomenon.

[0028] This application uses a pressure relief component 24 installed on the outlet pipe 21 or siphon pipe 23, which is connected to the central control module 3. By controlling the connection or isolation of the outlet pipe 21 or siphon pipe 23 from the outside, the duration of the siphon phenomenon can be controlled. Before siphon pumping, the connection between the outlet pipe 21 or siphon pipe 23 and the outside is isolated by the central control module 3 to maintain a seal between the outlet pipe 21 and the siphon pipe 23. Then, the first valve 22 is opened to generate a high-speed water flow in the outlet pipe 21, thereby creating a siphon at the end of the siphon pipe 23, siphoning the water in the forebay 5 into the outlet pipe 21. After the first valve 22 is closed, the water in the storage chamber 11 will not flow out. The water in the forebay 5 is continuously siphoned into the inspection well 4 through the siphon pipe 23 and the lower part of the outlet pipe 21. To stop the siphon effect, the pressure relief component 24 is opened via the central control module 3, connecting the outlet pipe 21 and siphon pipe 23 to the outside environment. This allows outside air to enter the outlet pipe 21 and siphon pipe 23, disrupting the siphon effect. By controlling the seal of the outlet pipe 21 and siphon pipe 23, the duration of the siphon effect can be controlled. This operation is simple and convenient, reducing labor intensity and allowing for timely control of the water inflow into the inspection well 4. It is more flexible and adaptable to various environments. After the siphon effect stops, the central control module 3 closes the pressure relief component 24 to prepare for the next siphon effect. This also reduces the risk of impurities entering the outlet pipe 21 and siphon pipe 23 and causing blockages, thus extending their service life and saving maintenance costs.

[0029] Please see Figures 1 to 6 In some embodiments, the pressure relief component 24 includes a pressure relief pipe 241 and a pressure relief valve 242. The pressure relief pipe 241 is installed on the water outlet pipe 21 or the siphon pipe 23 and is connected to its interior. The pressure relief valve 242 is installed on the pressure relief pipe 241 and is connected to the central control module 3 to control the water outlet pipe 21 or the siphon pipe 23 to communicate with or isolate it from the outside world.

[0030] This application uses a pressure relief pipe 241 installed on the outlet pipe 21 or siphon pipe 23, connected internally. A pressure relief valve 242 is installed on the pressure relief pipe 241 and connected to the central control module 3 to control the connection or isolation of the outlet pipe 21 or siphon pipe 23 from the outside. The pressure relief pipe 241 is connected to the outlet pipe 21 or siphon pipe 23 via a sleeve, which also improves the sealing of the connection and facilitates replacement and maintenance. By installing the pressure relief valve 242 on the pressure relief pipe 241, the connection or isolation of the outlet pipe 21 and siphon pipe 23 from the outside can be controlled by controlling the connection or isolation within the pressure relief pipe 241, which facilitates installation and operation. Similarly, the central control module 3 can control the opening or closing of the pressure relief valve 242 through a pneumatic, electric, or mechanical valve remote transmission mechanism, making operation simpler and more convenient, and improving safety.

[0031] The connection point between the pressure relief pipe 241 and the outlet pipe 21 is higher than the connection point between the siphon pipe 23 and the outlet pipe 21. This prevents water from flowing out when the pressure relief pipe 241 is connected to the outside world, and also stops the siphon phenomenon in time. This makes the response more sensitive and provides a certain degree of protection for the surrounding environment.

[0032] Please see Figures 1 to 6 In some embodiments, the siphon pumping assembly 2 further includes a flow control valve 25 disposed at the lower part of the outlet pipe 21 or on the siphon pipe 23, and the flow control valve 25 is connected to the central control module 3.

[0033] This application utilizes a flow control valve 25 installed at the lower part of the outlet pipe 21 or on the siphon pipe 23, which is connected to the central control module 3. After the siphon pipe 23 continuously generates a siphon effect, the flow rate of water passing through the siphon pipe 23 and the outlet pipe 21 can be controlled by adjusting the opening size of the flow control valve 25, thereby controlling the amount of water in the forebay 5 reaching the inspection well 4. This allows for reasonable adjustment during use, expanding the applicable range and making operation more flexible and versatile.

[0034] When the flow control valve 25 is installed on the outlet pipe 21, it should be located at the lower part of the connection between the siphon pipe 23 and the outlet pipe 21. The flow rate is controlled by adjusting the opening area of ​​the lower cross-section of the outlet pipe 21. Alternatively, after a siphon occurs, the flow control valve 25 can be completely closed. Although the siphon does not stop, the flow control valve 25 prevents water from the forebay 5 from flowing into the inspection well 4. To continue supplying water to the inspection well 4, simply open the flow control valve 25, and water from the forebay 5 can be continuously supplied to the inspection well 4 through the lower part of the outlet pipe 21 and the siphon pipe 23. This reduces water loss in the storage chamber 11, allows for short-term control of water flow, and is more flexible and adaptable to various environments.

[0035] Similarly, the central control module 3 can control the opening or closing of the flow control valve 25 through a remote transmission mechanism of a valve with a pneumatic, electric or mechanical structure. Remote control can provide operators with a good safe distance, further improve safety, make operation more convenient and labor-saving, reduce labor intensity and improve regulation efficiency.

[0036] Please see Figures 1 to 6 In some embodiments, the end of the pressure relief pipe 241 that is connected to the outside is configured as a downward bend.

[0037] In this application, the end of the pressure relief pipe 241 that connects to the outside is configured with a downward bend. The downward bend can reduce the amount of impurities entering the pressure relief pipe 241, extend the service life of the pressure relief pipe 241, and also prevent impurities from jamming the pressure relief valve 242, further improving safety and sensitivity.

[0038] Please see Figures 1 to 5 In some embodiments, the water storage mechanism 1 includes: a water storage tank 12, a mounting base 13, a water inlet pipe 14, and a water inlet valve 15. The water storage tank 12 is mounted on the mounting base 13, the water storage chamber 11 is disposed in the water storage tank 12, the water inlet pipe 14 is disposed on the water storage tank 12 and communicates with the water storage chamber 11, and the water inlet valve 15 is disposed on the water inlet pipe 14 and is connected to the central control module 3 to control the amount of water entering the water storage chamber 11.

[0039] This application utilizes a water storage tank 12 mounted on a mounting base 13, with a water storage chamber 11 located within the tank 12. An inlet pipe 14 is mounted on the tank 12 and connected to the water storage chamber 11. An inlet valve 15 is mounted on the inlet pipe 14 and connected to the central control module 3 to control the water flow into the water storage chamber 11. Connected to a water source via the inlet pipe 14, when the water storage chamber 11 is insufficient to generate high-speed water flow, the inlet valve 15 can be opened to allow sufficient water to be stored in the chamber. This generates sufficient water pressure on the outlet pipe 21 installed at the bottom, causing the water in the chamber 11 to flow at high speed into the outlet pipe 21, creating a siphon effect. Operation is simple and effortless.

[0040] The water inlet pipe 14 can be connected to a water pump, which draws water from the outside into the water storage chamber 11. This allows for the selection of different water replenishment methods based on different installation environments, thus expanding the applicable range.

[0041] Please see Figures 1 to 5In some embodiments, the water inlet valve 15 includes: a suspension element 151 disposed in the water storage chamber 11 and a second valve 152 disposed on the water inlet pipe 14 and cooperating with the suspension element 151. When the suspension element 151 moves away from the second valve 152, the second valve 152 opens the communication between the water inlet pipe 14 and the water storage chamber 11; when the suspension element 151 moves close to the second valve 152, the second valve 152 closes the communication between the water inlet pipe 14 and the water storage chamber 11.

[0042] This application utilizes a suspension element 151 installed in the water storage chamber 11 and a second valve 152 installed on the water inlet pipe 14 that cooperates with the suspension element 151. A sensing device is installed between the second valve 152 and the suspension element 151. The suspension element 151 will always float on the water surface. When the water level in the water storage chamber 11 drops to its limit, the suspension element 151 will also move away from the second valve 152 along with the water level. After exceeding the set sensing distance, the second valve 152 will automatically open the connection between the water inlet pipe 14 and the water storage chamber 11, allowing the water inlet pipe 14 to replenish the water storage chamber 11. After the water level rises, the suspension element 151 will move closer to the second valve 152 along with the water level. When the suspension element 151 reaches the set sensing distance from the second valve 152, the second valve 152 will automatically close the connection between the water inlet pipe 14 and the water storage chamber 11. This achieves the purpose of automatically replenishing a specific amount of water into the water storage chamber 11. The entire nuclear power plant's marine engineering system jetting and pumping siphon start-up device is more automated and intelligent, avoiding manual operation, making it simpler, more convenient, and labor-saving, and reducing labor intensity.

[0043] The second valve 152 can be a solenoid valve or a pneumatic valve, and the appropriate valve can be selected according to the actual use.

[0044] Please see Figures 1 to 5 In some embodiments, the water storage mechanism 1 further includes an exhaust component 16 disposed on the water storage tank 12. The exhaust component 16 includes an exhaust pipe 161 and an exhaust valve 162. The exhaust pipe 161 is disposed on the water storage tank 12 and communicates with the water storage chamber 11. The exhaust valve 162 is disposed on the exhaust pipe 161 and is connected to the central control module 3 to control whether the exhaust pipe 161 communicates with or is isolated from the outside. The end of the exhaust pipe 161 near the outside is configured as a downward bend.

[0045] This application uses an exhaust pipe 161 installed on the water storage tank 12, which is connected to the water storage chamber 11. An exhaust valve 162 is installed on the exhaust pipe 161 and connected to the central control module 3 to control whether the exhaust pipe 161 is connected to or isolated from the outside. By connecting the exhaust pipe 161 to the outside, the water supply through the inlet pipe 14 or the water outlet pipe 21 can be made smoother, ensuring that the internal and external atmospheric pressure of the water storage tank 12 remains consistent, preventing damage to the water storage tank 12, extending its service life, and making water supply and discharge operations more convenient and efficient, thus improving safety. The exhaust valve 162 on the exhaust pipe 161, when not undergoing major repairs for extended periods, closes the connection between the exhaust pipe 161 and the outside, maintaining the internal seal of the water storage chamber 11. This reduces the entry of external impurities or humid air into the water storage chamber 11, thereby delaying corrosion of the water storage chamber 11 inside the water storage tank 12, extending its service life, and improving its sealing performance.

[0046] The exhaust pipe 161 has a downward bend at the end closest to the outside, which reduces the amount of external impurities entering the exhaust pipe 161 and prevents external impurities from jamming or blocking the exhaust valve 162, thus further improving safety and extending service life.

[0047] Please see Figures 1 to 5 In some embodiments, the water storage mechanism 1 further includes a drain component 17 disposed on the water storage tank 12. The drain component 17 includes a drain pipe 171 and a drain valve 172. The drain pipe 171 is disposed at the lowest point of the water storage tank 12 and is connected to the water storage chamber 11. The drain valve 172 is disposed on the drain pipe 171 and is connected to the central control module 3 to control the drain pipe 171 to communicate with or isolate it from the outside world.

[0048] This application uses a drain pipe 171 located at the lowest point of the water storage tank 12, connected to the water storage chamber 11. A drain valve 172 is installed on the drain pipe 171 and connected to the central control module 3 to control whether the drain pipe 171 is connected to or isolated from the outside. When cleaning the inside of the water storage chamber 11, the central control module 3 controls the drain pipe 171 to open, allowing sewage and impurities inside the water storage chamber 11 to be released through the drain pipe 171 at the lowest point, thus facilitating cleaning and making the cleaning process more convenient and labor-saving. Closing the drain pipe 171 keeps the inside of the water storage chamber 11 sealed, preparing for the siphon water delivery operation of the siphon pumping assembly 2. This reduces the blockage of the outlet pipe 21 by impurities inside the water storage chamber 11 and reduces corrosion inside the water storage chamber 11, extending its service life.

[0049] Please see Figures 1 to 5 In some embodiments, the mounting base 13 is provided with at least one reinforcing rib 18 to support the water outlet pipe 21.

[0050] This application utilizes reinforcing ribs 18 on the mounting base 13 to increase the overall strength and stability of the mounting base 13, thereby improving safety. By supporting the water outlet pipe 21 with reinforcing ribs 18, the stability of the water outlet pipe 21 is improved when water flows into it, reducing vibration and thus improving sealing and safety, and extending its service life.

[0051] For the work process, please refer to [link / reference]. Figures 1 to 6 First, close the pressure relief valve 242, the inlet valve 15, and the drain valve 172. Then, open the vent valve 162, the first valve 22, and the flow control valve 25. The water in the storage chamber 11 will enter the outlet pipe 21 under the action of gravity. It will flow at high speed inside the outlet pipe 21. The flowing water will carry away the air in the outlet pipe 21 and the siphon pipe 23. Under the action of atmospheric pressure, a siphon phenomenon will be generated at the other end of the siphon pipe 23, siphoning the water in the forepool 5 into the outlet pipe 21. Then, the first valve 22 will be closed through the central control module 3, allowing the stored water to flow freely. Water in chamber 11 cannot enter the outlet pipe 21. Since there is no air between the siphon pipe 23 and the lower part of the outlet pipe 21, and the water flow below the outlet pipe 21 continues downwards, the other end of the siphon pipe 23 continues to generate a siphon effect, transporting water from the forebay 5 to the inspection well 4. To stop the siphon effect, the pressure relief valve 242 is opened, allowing outside air to enter the siphon pipe 23 and the outlet pipe 21, stopping the siphon effect at the other end of the siphon pipe 23. This completes the process of guiding water from the forebay 5 to the inspection well 4. The entire siphon process is automatic and requires no equipment intervention, reducing operational difficulty and labor intensity. It eliminates the need for frequent adjustments by personnel, improves safety, saves energy, and is more energy-efficient and environmentally friendly.

[0052] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A water jet pumping siphon start-up device for a marine engineering system used in nuclear power plants, characterized in that, include: A water storage mechanism (1) and at least one set of siphon pumping components (2) installed on the water storage mechanism (1), and a central control module (3) for remotely controlling the water storage mechanism (1) and the siphon pumping components (2). The water storage mechanism (1) is provided with a water storage chamber (11); The siphon pumping assembly (2) includes: an outlet pipe (21), a first valve (22) and a siphon pipe (23). One end of the outlet pipe (21) is installed on the water storage mechanism (1) through the first valve (22), and the other end of the outlet pipe (21) is connected to the inspection well (4). The first valve (22) is connected to the central control module (3) to control the water outlet pipe (21) to connect or close to the water storage chamber (11); One end of the siphon (23) is set on the outlet pipe (21), and the other end of the siphon (23) is connected to the forebay water (5). When water flows quickly through the outlet pipe (21), the other end of the siphon (23) generates a siphon phenomenon. After the first valve (22) closes the connection between the outlet pipe (21) and the water storage chamber (11), the other end of the siphon (23) will continue to generate a siphon phenomenon under the action of atmospheric pressure, squeezing the water in the forebay water (5) into the inspection well (4).

2. The water jet pumping siphon start-up device for marine engineering systems in nuclear power plants according to claim 1, characterized in that, The siphon pumping assembly (2) also includes a pressure relief component (24), which is installed on the outlet pipe (21) or the siphon pipe (23) and connected to the central control module (3). The pressure relief component (24) controls the connection or isolation of the outlet pipe (21) or the siphon pipe (23) from the outside world to control the duration of the siphon phenomenon.

3. The water jetting and pumping siphon start-up device for marine engineering systems in nuclear power plants according to claim 2, characterized in that, The pressure relief component (24) includes a pressure relief pipe (241) and a pressure relief valve (242). The pressure relief pipe (241) is installed on the water outlet pipe (21) or the siphon pipe (23) and is connected to its interior. The pressure relief valve (242) is installed on the pressure relief pipe (241) and is connected to the central control module (3) to control the water outlet pipe (21) or the siphon pipe (23) to communicate with or isolate it from the outside world.

4. The water jetting and pumping siphon start-up device for marine engineering systems in nuclear power plants according to claim 2, characterized in that, The siphon pumping assembly (2) also includes a flow control valve (25) disposed at the lower part of the outlet pipe (21) or on the siphon pipe (23), and the flow control valve (25) is connected to the central control module (3).

5. The water jetting and pumping siphon start-up device for marine engineering systems in nuclear power plants according to claim 3, characterized in that, The end of the pressure relief pipe (241) that is connected to the outside is configured as a downward bend.

6. The marine engineering system jet pumping siphon start-up device for nuclear power plants according to claim 1, characterized in that, The water storage mechanism (1) includes: a water storage tank (12), a mounting base (13), an inlet pipe (14), and an inlet valve (15). The water storage tank (12) is mounted on the mounting base (13), the water storage chamber (11) is located in the water storage tank (12), the inlet pipe (14) is located on the water storage tank (12) and is connected to the water storage chamber (11), and the inlet valve (15) is located on the inlet pipe (14) and is connected to the central control module (3) to control the amount of water entering the water storage chamber (11).

7. The marine engineering system jet pumping siphon start-up device for nuclear power plants according to claim 6, characterized in that, The water inlet valve (15) includes: a suspension element (151) disposed in the water storage chamber (11) and a second valve (152) disposed on the water inlet pipe (14) and cooperating with the suspension element (151). When the suspension element (151) is away from the second valve (152), the second valve (152) opens the connection between the water inlet pipe (14) and the water storage chamber (11); when the suspension element (151) is close to the second valve (152), the second valve (152) closes the connection between the water inlet pipe (14) and the water storage chamber (11).

8. The water jetting and pumping siphon start-up device for marine engineering systems in nuclear power plants according to claim 6, characterized in that, The water storage mechanism (1) also includes an exhaust component (16) installed on the water storage tank (12). The exhaust component (16) includes an exhaust pipe (161) and an exhaust valve (162). The exhaust pipe (161) is installed on the water storage tank (12) and is connected to the water storage chamber (11). The exhaust valve (162) is installed on the exhaust pipe (161) and is connected to the central control module (3) to control the exhaust pipe (161) to communicate with or isolate it from the outside. The end of the exhaust pipe (161) near the outside is configured as a downward bend.

9. The water jetting and pumping siphon start-up device for marine engineering systems in nuclear power plants according to claim 6, characterized in that, The water storage mechanism (1) also includes a drain component (17) installed on the water storage tank (12). The drain component (17) includes a drain pipe (171) and a drain valve (172). The drain pipe (171) is installed at the lowest point of the water storage tank (12) and is connected to the water storage chamber (11). The drain valve (172) is installed on the drain pipe (171) and is connected to the central control module (3) to control the drain pipe (171) to communicate with or isolate it from the outside world.

10. The marine engineering system jet pumping siphon start-up device for nuclear power plants according to claim 6, characterized in that, The mounting base (13) is provided with at least one reinforcing rib (18) to support the water outlet pipe (21).

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