A device for nuclear power plant hydrophobic exhaust

Abstract

This utility model relates to a dedicated device for condensate drainage and venting in nuclear power plants. The device includes a modular condensate tank, T-junction fasteners, four-way fasteners, clamping components, and condensate hoses. The modular condensate tank integrates a grid-shaped flow guide baffle, a stainless steel filter screen, a tank body, a condensate pipe rack, and drainage pipes. The condensate pipe rack is connected to the T-junction and four-way fasteners via condensate hoses, forming a distributed network of radioactive waste collection nodes. Radioactive waste from multiple condensate drainage and venting points is collected in the modular condensate tank via this network. After being guided and buffered by the grid-shaped flow guide baffle and filtered by the stainless steel filter screen, it is discharged to a designated collection point via the drainage pipes. Compared with existing technologies, this utility model simplifies the installation and disassembly process through modular design and standardized interfaces, improves work efficiency, achieves centralized diversion and treatment of radioactive waste from multiple condensate drainage and venting points, and reduces the labor intensity and safety risks for condensate drainage and venting maintenance personnel.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant inspection and maintenance technology, and in particular to a special device for condensate drainage and exhaust in nuclear power plants. Background Technology

[0002] The nuclear island condensate and venting system is one of the key systems for the safe operation of a nuclear power plant. It plays a crucial role in collecting numerous condensate and venting points, as well as radioactive waste liquids and gases, generated from these points in various systems within the nuclear island and other controlled areas (such as the reactor coolant system, chemical and volume control systems, and equipment cooling water systems). During major overhauls of the nuclear power plant, maintenance of related systems and equipment is necessary, and condensate and venting maintenance operations are particularly frequent and critical.

[0003] Currently, traditional maintenance procedures for drainage and venting typically involve temporarily connecting flexible hoses. Operators must remove the caps or plugs from each drainage and venting point individually, perform dosage testing and cleaning, and then install the hoses and secure them with clamps or wire. In areas with multiple drainage and venting points, multiple independent hoses are often required, each leading to a floor drain or collection tank. This method has significant drawbacks:

[0004] (1) The operation is cumbersome and inefficient: Each drainage and venting point needs to be operated independently. The installation, disassembly and fixing of the hoses takes a long time, and personnel need to work in the radiation control area for a long time.

[0005] (2) High risk of radiation to personnel: During operation, personnel need to come into close contact with hydrophobic exhaust points and open pipe interfaces with radioactive residues. The frequency and duration of contact with radiation sources are high, and the cumulative dose to the group is significant.

[0006] (3) High safety risks: The radioactive dose, pressure and flow rate of residual waste liquid in different systems within the nuclear island loop vary significantly. Temporarily fixed hoses are prone to swinging or falling off when pressure or flow rate changes suddenly, resulting in leakage of radioactive waste liquid, which not only pollutes the working environment and increases the workload of decontamination, but also poses a direct radiation and pollution risk to on-site personnel.

[0007] (4) High labor intensity: The handling, laying and fixing of a large number of hoses, as well as operation in narrow spaces, consume a lot of physical strength for maintenance personnel.

[0008] (5) Low level of systematization: Multiple independent hoses lack unified management and diversion, which affects the order of the work site and also poses a risk of tripping.

[0009] Therefore, there is an urgent need to develop a specialized device that can simplify operating procedures, reduce personnel radiation exposure, reduce labor intensity, and improve operational safety and systematization to meet the needs of efficient and safe overhauls of nuclear power plants. Utility Model Content

[0010] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a special device for condensate venting in nuclear power plants. Through modular design and standardized connection, it realizes centralized collection and systematic diversion of radioactive waste liquid from multiple condensate venting points, significantly improves the efficiency of condensate venting maintenance, effectively reduces the frequency and time of operators' contact with radiation sources, reduces labor intensity, and fundamentally reduces the risk of leakage caused by hose swinging and falling off, thereby improving the safety and reliability of maintenance operations.

[0011] The objective of this utility model can be achieved through the following technical solutions:

[0012] The first objective of this utility model is to provide a dedicated device for condensate drainage and venting in nuclear power plants. The device includes a modular condensate tank and a connecting network mechanism. The connecting network mechanism includes a multi-way connection fastening assembly, a clamp assembly, and a condensate hose. The modular condensate tank and the multi-way connection fastening assembly are connected via the condensate hose and the clamp assembly. The multi-way connection fastening assembly is connected to various condensate drainage and venting points of the nuclear island system via the condensate hose and the clamp assembly. The multi-way connection fastening assembly includes a three-way fastener and / or a four-way fastener.

[0013] Furthermore, the modular drainage tank includes a tank body; the tank body is equipped with a grid-shaped flow guide baffle and a stainless steel filter screen; the upper part of the tank body is equipped with a drainage pipe rack; and the bottom of the tank body is equipped with a drainage pipe.

[0014] Furthermore, the hydrophobic hose and clamp assembly are used to connect the hydrophobic pipe rack and the multi-port fastening assembly.

[0015] Furthermore, the drainage pipe rack is connected to the tee fastener and / or four-way fastener respectively via the drainage hose.

[0016] Furthermore, the drainage pipe rack is provided with multiple standardized interfaces for quick connection of the drainage hose via the clamp assembly.

[0017] Furthermore, the grid-shaped flow guide baffle is fixed inside the inner cavity of the box and is positioned above the drainage pipe to reduce the flow rate of the incoming waste liquid and distribute the liquid flow evenly.

[0018] Furthermore, the stainless steel filter screen is positioned below the grid-shaped baffle plate to filter solid impurities in the waste liquid.

[0019] Furthermore, the clamp assembly is a stainless steel quick-release clamp.

[0020] Furthermore, the hydrophobic hose is a PVE transparent steel wire hose that is radiation-resistant, corrosion-resistant, and pressure-resistant.

[0021] Furthermore, the multi-way connection fastening assembly includes at least one tee fastener and at least one four-way fastener; the tee fastener and the four-way fastener are connected by the hydrophobic hose and clamp assembly; the modular hydrophobic tank and the tee fastener are connected by the hydrophobic hose and clamp assembly; and the four-way fastener is connected to each hydrophobic venting point of the nuclear island system by the hydrophobic hose and clamp assembly.

[0022] Furthermore, both the three-way and four-way fasteners are equipped with standardized interfaces for quick connection to the hydrophobic hose via the clamp assembly.

[0023] Furthermore, the tee fastener includes a tee fastener body, which has three interfaces, two of which are located on one side of the tee fastener body and the other interface is located on the other side of the tee fastener body.

[0024] Furthermore, the main body of the tee fastener is a hollow cylinder.

[0025] Furthermore, the four-way fastener includes a four-way fastener body, which has four interfaces, three of which are located on one side of the four-way fastener body and the other interface is located on the other side of the four-way fastener body.

[0026] Furthermore, the main body of the four-way fastener is a hollow cylinder.

[0027] Furthermore, the standardized interfaces of the tee fasteners and four-way fasteners refer to interfaces that match the drainage hoses; the standardized interface of the drainage pipe rack refers to an interface that matches the drainage hoses; all drainage hoses are the same size.

[0028] Furthermore, the modular condensate tank, as the core processing unit, adopts an integrated design. The interior of the modular condensate tank integrates a grid-shaped flow guide baffle (used to reduce the flow rate of waste liquid, evenly distribute the liquid flow, and prevent impact splashing) and a stainless steel filter screen (used to filter solid impurities in the waste liquid). The upper part of the tank is equipped with a condensate pipe rack (providing multiple standardized interfaces), and the bottom is connected to a drainage pipe to discharge the treated waste liquid to a designated point.

[0029] Furthermore, the connecting network mechanism includes tee fasteners, four-way fasteners (the tee fasteners and four-way fasteners serve as distributed collection nodes to collect waste liquid flows from multiple hydrophobic venting points), clamp assemblies (preferably stainless steel quick-release clamps, used to provide fast and reliable sealing connections), and hydrophobic hoses (radiation-resistant, corrosion-resistant, and pressure-resistant flexible hoses, serving as waste liquid transport channels).

[0030] Furthermore, the condensate drain pipe rack is connected to T-joint and / or Four-way fasteners via condensate drain hoses. These T-joint and / or Four-way fasteners are then connected to various dispersed condensate venting points (such as valve vents, pump casing vents, etc.) of the nuclear island system via condensate drain hoses and clamp assemblies, ultimately forming a tree-like or mesh-like distributed radioactive waste collection node network. Waste from multiple condensate venting points flows through this network to a modular condensate tank, where it is buffered, filtered, and then discharged centrally.

[0031] The second objective of this invention is to provide a method for using a special device for condensate drainage and venting in nuclear power plants, the method comprising the following steps:

[0032] The modular condensate tank and the multi-way connection fastening assembly are connected by the condensate hose and clamp assembly, and the multi-way connection fastening assembly is connected to each condensate venting point of the nuclear island system by the condensate hose and clamp assembly. The connection network structure forms a distributed radioactive waste collection node network.

[0033] Radioactive waste liquid from multiple hydrophobic venting points is collected and guided to the modular hydrophobic tank, and after being treated by the modular hydrophobic tank, it is discharged to a designated collection point.

[0034] Furthermore, the method of use includes the following steps:

[0035] The modular condensate tank and the multi-way connection fastening assembly are connected by the condensate hose and clamp assembly, and the multi-way connection fastening assembly is connected to each condensate venting point of the nuclear island system by the condensate hose and clamp assembly, thereby constructing a distributed radioactive waste liquid collection node network, which is used to collect and guide the radioactive waste liquid from multiple condensate venting points to the modular condensate tank.

[0036] The radioactive waste liquid is guided and buffered by a grid-shaped baffle and filtered by a stainless steel filter in the modular drainage tank, and then discharged to a designated collection point through the drainage pipeline.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1) The nuclear power plant condensate and exhaust device provided by this utility model has significantly improved working efficiency. The modular design and standardized interfaces (tees, crosses, clamps, condensate pipe rack interfaces) greatly simplify the installation and disassembly process. There is no need to lay long hoses to the floor drain at each point. It is only necessary to connect to the nearest distributed node (tees / crosses). The device can be quickly deployed and recovered as a whole, which greatly shortens the maintenance time and reduces the pressure of major overhaul work.

[0039] 2) The nuclear power plant drainage and venting device provided by this utility model effectively ensures the radiation safety of personnel and significantly reduces the frequency and duration of contact: centralized diversion treatment reduces the number of times and time that operators need to perform installation, disassembly, and inspection operations near radioactive hotspots, significantly reducing the risk of leaks; standardized fasteners and optimized pipeline connection methods (reducing the use of long hoses through distributed nodes) greatly improve the reliability and sealing of the connection, effectively avoiding hose swinging and detachment caused by pressure fluctuations, and fundamentally reducing the risk of radioactive waste leakage.

[0040] 3) The nuclear power plant condensate and exhaust device provided by this utility model significantly reduces labor intensity, reduces the handling of a large number of hoses, long-distance laying and complex fixing work. The modular condensate tank and standardized connectors facilitate transportation and operation. The systematic layout makes the site cleaner and more orderly and reduces the difficulty of operation.

[0041] 4) The special device for condensate drainage and exhaust in nuclear power plants provided by this utility model improves the quality and reliability of operation. The grid-shaped guide baffle ensures that the waste liquid flows in smoothly and reduces impact and eddies.

[0042] 5) The nuclear power plant condensate venting device provided by this utility model has versatility and reusability. The device adopts standardized design and corrosion-resistant materials (such as stainless steel), and is suitable for condensate venting operations in different units and areas of nuclear power plants. It can be reused, reducing the cost per use.

[0043] 6) The special device for condensate drainage and exhaust in nuclear power plants provided by this utility model is actually an improvement and enhancement based on the original condensate drainage and exhaust system of nuclear power plants. A special device was designed for maintenance work, which can carry out maintenance without changing the structure of the original system, which is fast, cost-effective, and significantly reduces the radiation dose received by the maintenance team. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0045] Figure 2 This is an assembly diagram of the modular condensate tank of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0046] Figure 3 This is an exploded view of the modular condensate tank of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0047] Figure 4 This is a schematic diagram of the assembly of the three-way connecting fastener of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0048] Figure 5This is an exploded view of the three-way fastener of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0049] Figure 6 This is a schematic diagram of the assembly of the four-way connecting fastener of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0050] Figure 7 This is an exploded view of the four-way connecting fastener of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0051] Figure 8 This is a schematic diagram of the process of the nuclear power plant condensate venting device in an embodiment of this utility model.

[0052] in:

[0053] 1- Modular drainage tank; 2- T-connector fastener; 3- Four-way connector fastener; 4- Clamp assembly; 5- Drainage hose;

[0054] 11-Grid-shaped baffle; 12-Stainless steel filter screen; 13-Box body; 14-Drainage pipe rack; 15-Drainage pipe. Detailed Implementation

[0055] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] This utility model relates to a special device for condensate drainage and venting in nuclear power plants, specifically designed for nuclear power plant maintenance and repair. The device includes a modular condensate tank 1, a three-way fastener 2, a four-way fastener 3, a clamp assembly 4, and a condensate hose 5. The modular condensate tank 1 adopts an integrated design, internally incorporating a grid-shaped flow guide baffle 11, a stainless steel filter screen 12, a tank body 13, a condensate pipe rack 14, and a drainage pipe 15. The condensate pipe rack 14 is connected to the three-way fastener 2 and the four-way fastener 3 via the condensate hose 5, forming a distributed network of radioactive waste collection nodes. Radioactive waste from multiple condensate drainage and venting points is collected in the modular condensate tank 1 through this network. After being guided and buffered by the grid-shaped flow guide baffle 11 and filtered by the stainless steel filter screen 12, it is discharged to a designated collection point via the drainage pipe 15. Compared with existing technologies, this utility model significantly simplifies the installation and disassembly process and improves work efficiency through modular design and standardized interfaces (tees, crosses, clamps); at the same time, it realizes centralized diversion and treatment of radioactive waste liquid from multiple condensate venting points, effectively reducing the frequency of operators' contact with radiation sources and lowering the labor intensity and safety risks for condensate venting maintenance personnel.

[0058] Example 1

[0059] like Figures 1-3 As shown, this embodiment provides a dedicated device for condensate drainage and venting in nuclear power plants. The device includes a modular condensate tank 1 and a connecting network mechanism. The connecting network mechanism includes a multi-way connection fastening assembly, a clamp assembly 4, and a condensate hose 5. The modular condensate tank 1 and the multi-way connection fastening assembly are connected through the condensate hose 5 and the clamp assembly 4. The multi-way connection fastening assembly is connected to each condensate drainage and venting point of the nuclear island system through the condensate hose 5 and the clamp assembly 4. The multi-way connection fastening assembly includes a three-way fastener 2 and / or a four-way fastener 3.

[0060] The modular drainage tank 1 includes a tank body 13; the tank body 13 is equipped with a grid-shaped flow guide baffle 11 and a stainless steel filter screen 12; the upper part of the tank body 13 is equipped with a drainage pipe rack 14; and the bottom of the tank body 13 is equipped with a drainage pipe 15.

[0061] The drainage pipe rack 14 and the multi-port fastening assembly are connected through the drainage hose 5 and the clamp assembly 4.

[0062] The drainage pipe rack 14 is provided with multiple standardized interfaces for quick connection of the drainage hose 5 via the clamp assembly 4.

[0063] The grid-shaped flow guide baffle 11 is fixed in the inner cavity of the box 13. The grid-shaped flow guide baffle 11 is set above the drainage pipe 15 to reduce the flow rate of the inflowing waste liquid and distribute the liquid flow evenly.

[0064] The stainless steel filter screen 12 is located below the grid-shaped baffle 11 and is used to filter solid impurities in the waste liquid.

[0065] The clamp assembly 4 is a stainless steel quick-release clamp.

[0066] The hydrophobic hose 5 is a PVE transparent steel wire hose that is radiation-resistant, corrosion-resistant, and pressure-resistant.

[0067] Both the three-way fastener 2 and the four-way fastener 3 are equipped with standardized interfaces for quick connection to the hydrophobic hose 5 via the clamp assembly 4.

[0068] like Figure 4 , 5 As shown, the tee fastener 2 includes a tee fastener body, which has three interfaces, two of which are located on one side (water inlet side) and the other on the other side (water outlet side).

[0069] The main body of the tee fastener is a hollow cylinder.

[0070] like Figure 6 , 7 As shown, the four-way fastener 3 includes a four-way fastener body, which has four interfaces, three of which are located on one side (water inlet side) of the four-way fastener body, and the other interface is located on the other side (water outlet side) of the four-way fastener body.

[0071] The main body of the four-way fastener is a hollow cylinder.

[0072] The standardized interfaces of the three-way fastener 2 and the four-way fastener 3 refer to the interfaces that match the drainage hose 5; the standardized interface of the drainage pipe rack 14 refers to the interface that matches the drainage hose 5; all drainage hoses 5 are the same size.

[0073] The multi-way connection fastening assembly includes at least one tee fastener 2 and at least one four-way fastener 3; the tee fastener 2 and the four-way fastener 3 are connected by the hydrophobic hose 5 and the clamp assembly 4; the modular hydrophobic tank 1 and the tee fastener 2 are connected by the hydrophobic hose 5 and the clamp assembly 4; and the four-way fastener 3 is connected to each hydrophobic venting point of the nuclear island system by the hydrophobic hose 5 and the clamp assembly 4.

[0074] In this embodiment, as Figure 1As shown, exemplarily, the multi-way connection fastening assembly includes a three-way fastener 2 and two four-way fasteners 3; the three-way fastener 2 and the four-way fasteners 3 are connected by the drain hose 5 and the clamp assembly 4, specifically, one interface on the water outlet side of the two four-way fasteners 3 is connected to one of the two interfaces on the water inlet side of the three-way fastener 2; the modular drain tank 1 and the three-way fastener 2 are connected by the drain hose 5 and the clamp assembly 4, specifically, the interface of the drain pipe bracket 14 of the modular drain tank 1 is connected to one interface on the water outlet side of the three-way fastener 2; the four-way fasteners 3 are connected to each drain and vent point of the nuclear island system by the drain hose 5 and the clamp assembly 4, specifically, each drain and vent point of the nuclear island system is connected to one of the three interfaces on the water inlet side of the two four-way fasteners 3.

[0075] The modular condensate tank 1 serves as the core processing unit and adopts an integrated design. The tank body 13 of the modular condensate tank 1 integrates a grid-shaped flow guide baffle 11 (used to reduce the flow rate of waste liquid, distribute the liquid flow evenly, and prevent impact splashing) and a stainless steel filter screen 12 (used to filter solid impurities in the waste liquid). A condensate pipe rack 14 (providing multiple standardized interfaces) is set on the upper part of the tank body 13, and a drainage pipe 15 is connected to the bottom to discharge the treated waste liquid to a designated point.

[0076] The connecting network mechanism includes a three-way fastener 2, a four-way fastener 3 (the three-way fastener 2 and the four-way fastener 3 serve as distributed collection nodes to collect waste liquid flows from multiple condensate venting points), a clamp assembly 4 (preferably a stainless steel quick-release clamp, used to provide a fast and reliable sealing connection), and a condensate hose 5 (a flexible hose that is radiation-resistant, corrosion-resistant, and pressure-resistant, serving as a waste liquid transport channel).

[0077] The condensate drain pipe rack 14 is connected to the tee fasteners 2 and / or the four-way fasteners 3 via condensate drain hoses 5. These tee fasteners 2 and / or four-way fasteners 3 are then connected to the various dispersed condensate venting points (such as valve vents, pump casing vents, etc.) of the nuclear island system via condensate drain hoses 5 and clamp assemblies 4, ultimately forming a tree-like or mesh-like distributed radioactive waste collection node network. Waste from multiple condensate venting points flows through this network to the modular condensate tank 1, where it is buffered, filtered, and then discharged centrally.

[0078] The second objective of this invention is to provide a method for using a special device for condensate drainage and venting in nuclear power plants, the method comprising the following steps:

[0079] The modular condensate tank 1 and the multi-way connection fastening assembly are connected by the condensate hose 5 and the clamp assembly 4. After the multi-way connection fastening assembly is connected to each condensate venting point of the nuclear island system by the condensate hose 5 and the clamp assembly 4, the connection network structure forms a distributed radioactive waste liquid collection node network.

[0080] Radioactive waste liquid from multiple hydrophobic venting points is collected and guided to the modular hydrophobic tank 1, and after being treated by the modular hydrophobic tank 1, it is discharged to a designated collection point.

[0081] The method of use includes the following steps:

[0082] The modular condensate tank 1 and the multi-way connection fastening assembly are connected by the condensate hose 5 and the clamp assembly 4. The multi-way connection fastening assembly is also connected to each condensate venting point of the nuclear island system by the condensate hose 5 and the clamp assembly 4, thereby constructing a distributed radioactive waste collection node network to collect and guide the radioactive waste from multiple condensate venting points to the modular condensate tank 1.

[0083] The radioactive waste liquid is guided and buffered by a grid-shaped baffle 11 and filtered by a stainless steel filter screen 12 in the modular drainage tank 1, and then discharged to a designated collection point through the drainage pipe 15.

[0084] Example 2

[0085] like Figure 8 As shown, this embodiment provides a method for using a special device for condensate drainage and venting in nuclear power plants. Based on the device and method of Embodiment 1, the method of use in this embodiment includes the following steps:

[0086] S1. Based on the nuclear power plant, obtain the exhaust point information data corresponding to the room, including the floor drain data, drainage exhaust pipeline and equipment data corresponding to the room;

[0087] S2. Remove the nozzle and plug from the designated location (drainage and venting point), inspect and clean them;

[0088] S3. Install the drainage hose 5 and use the clamp assembly 4 to fix it to the nozzle and plug at the designated position (drainage and venting point);

[0089] S4. After the drain hose 5 is connected to the four-way fastener 3 and the three-way fastener 2, connect the drain hose 5 to the standardized interface of the drain pipe rack 14 of the modular drain tank 1 of the special drain venting tool for this nuclear power plant (the standardized interface of the drain pipe rack 14 is equipped with a wedge sleeve to facilitate the connection of the drain hose 5), and tighten it securely with the clamp assembly 4. Adjust the pressure and flow rate of the buffer system loop and observe to confirm the continuous draining stability.

[0090] S5. The collected waste liquid is discharged to the designated water supply point floor drain through the drainage pipe 15 of the modular drainage tank 1 of the special drainage and venting tool.

[0091] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A special device for venting and draining water from a nuclear power plant, characterized in that, The device includes a modular hydrophobic tank (1) and a connecting network mechanism; The connection network mechanism includes a multi-port connection fastening assembly, a clamp assembly (4), and a hydrophobic hose (5); The modular drainage tank (1) and the multi-way connection fastening assembly are connected by the hydrophobic hose (5) and the clamp assembly (4); The multi-way connection fastening assembly and the hydrophobic venting point are connected through the hydrophobic hose (5) and the clamp assembly (4); The multi-way fastening assembly includes a three-way fastener (2) and / or a four-way fastener (3).

2. The special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, The modular hydrophobic tank (1) includes a tank body (13); The box (13) is equipped with a grid-shaped baffle (11) and a stainless steel filter screen (12) inside; A drainage pipe rack (14) is provided on the upper part of the box (13); The bottom of the box (13) is provided with a drainage pipe (15).

3. A special device for venting and draining water from a nuclear power plant according to claim 2, characterized in that, The hydrophobic hose (5) and the clamp assembly (4) are connected to the hydrophobic pipe rack (14) and the multi-port fastening assembly.

4. A special device for venting and draining water from a nuclear power plant according to claim 2, characterized in that, The grid-shaped baffle (11) is fixed in the inner cavity of the box (13) to reduce the flow rate of the waste liquid and distribute the liquid flow evenly; The stainless steel filter screen (12) is located below the grid-shaped baffle (11) and is used to filter solid impurities in the waste liquid.

5. A special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, The clamp assembly (4) is a stainless steel quick-release clamp.

6. A special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, The hydrophobic hose (5) is a PVE transparent steel wire hose.

7. A special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, The multi-way fastening assembly includes at least one tee fastener (2) and at least one four-way fastener (3); The tee fastener (2) and the four-way fastener (3) are connected by the hydrophobic hose (5) and the clamp assembly (4); The modular drainage tank (1) and the tee fastener (2) are connected by the hydrophobic hose (5) and the clamp assembly (4); The four-way fastener (3) is connected to the hydrophobic venting point via the hydrophobic hose (5) and the clamp assembly (4).

8. A special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, Both the three-way fastener (2) and the four-way fastener (3) are equipped with standardized interfaces for connecting the hydrophobic hose (5) through the clamp assembly (4).

9. A special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, The tee fastener (2) includes a tee fastener body, which has three interfaces, two of which are located on one side of the tee fastener body and the other interface is located on the other side of the tee fastener body. The main body of the tee fastener is a hollow cylinder.

10. A special device for venting and draining water from a nuclear power plant according to claim 1, characterized in that, The four-way fastener (3) includes a four-way fastener body, which has four interfaces, three of which are located on one side of the four-way fastener body and the other interface is located on the other side of the four-way fastener body. The main body of the four-way fastener is a hollow cylinder.

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