Mobile dosing device for nuclear power plants

Abstract

The utility model discloses a mobile dosing device for nuclear power plant, include: mobile trolley, storage tank, fixedly placed on mobile trolley, its set up and be used for adding medicine dosing mouth, be used for the stirring module that the medicine of input is stirred even forms medicament, part intrudes the inside of storage tank, be used for the dosing module that the medicament after stirring even is exported to external system, with the lower part intercommunication of storage tank, cleaning module, including part set up in the inside of storage tank and communicate in the bottom of storage tank's blowdown part, be used for the monitoring module of monitoring medicament state, set up on storage tank and / or the inside of storage tank. The utility model discloses through the design of integration, mobilization, has realized the nimble deployment of medicament and quick dosing, has solved the problem that the existing fixed type dosing system is inefficient, the problem of great labor intensity, has improved the work efficiency and safety of nuclear power plant chemical dosing significantly.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a mobile dosing device for nuclear power plants. Background Technology

[0002] In nuclear power plant operation, multiple units are equipped with SIR (Self-Improving and Refrigerant Regulator) systems to regulate the cooling water quality and maintain stability. Currently, these SIR systems are fixed in specific locations within each unit. This arrangement requires operators to travel between various dispersed dosing points each time chemicals are added, and the required chemicals also need to be manually transported to each point. This approach is not only labor-intensive but also inefficient, failing to meet the demands of efficient and intensive nuclear power plant operation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a mobile dosing device for nuclear power plants.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a mobile dosing device for nuclear power plants, comprising: Mobile cart, The medicine storage tank is fixedly placed on the mobile trolley and has a medicine addition port for adding medicine; A stirring module for uniformly mixing the input drugs to form a pharmaceutical preparation extends partially into the storage tank. The dosing module, which is used to output the well-stirred medicine to the external system, is connected to the lower part of the medicine storage tank; The cleaning module includes a spray section partially located inside the medicine storage tank and a drain section connected to the bottom of the medicine storage tank. A monitoring module for monitoring the status of the medicine is located on the medicine storage tank and / or inside the medicine storage tank.

[0005] Furthermore, the mobile trolley includes a vehicle body and omnidirectional wheels, and the omnidirectional wheels are equipped with a braking structure.

[0006] Furthermore, the bottom of the medicine storage tank is an inclined surface, and the sewage discharge section is connected to the lowest point of the inclined surface.

[0007] Furthermore, the stirring module is a manual stirring mechanism, and its transmission part extends into the tank through a sealing structure located on the top of the medicine storage tank.

[0008] Furthermore, the dosing module includes at least one dosing pipeline, and the dosing pipeline is equipped with a control valve for controlling the on / off of the drug output.

[0009] Furthermore, the dosing module also includes at least one of a power delivery unit and a flow metering unit; The power delivery unit and flow metering unit are installed on the dosing pipeline and are located downstream of the control valve.

[0010] Furthermore, the dosing module also includes a quick-connect structure for rapid connection to an external system, the quick-connect structure being disposed at the end of the dosing pipeline.

[0011] Furthermore, the spray unit includes a water supply pipeline and multiple cleaning nozzles connected to the water supply pipeline, and the water supply pipeline is provided with an interface for connecting to an external water source.

[0012] Furthermore, the monitoring module includes a level monitoring unit for monitoring the liquid level of the medicine in the storage tank and / or an observation window for directly observing the situation inside the tank.

[0013] Furthermore, the mobile dosing device for nuclear power plants also includes a storage mechanism for storing the pipeline portion of the dosing module, the storage mechanism being mounted on the storage tank or the mobile trolley.

[0014] By implementing this utility model, the following beneficial effects can be achieved: This utility model discloses a mobile chemical dosing device for nuclear power plants, which realizes integrated operation of the entire process, including chemical input, mixing, chemical output, status monitoring, and equipment cleaning. The entire system is carried by a mobile trolley, making it a flexible mobile dosing station that can serve multiple units in a nuclear power plant, greatly improving work efficiency and reducing labor costs. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a mobile chemical dosing device for nuclear power plants according to one embodiment of the present invention. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] See Figure 1 This utility model discloses a mobile chemical dosing device for nuclear power plants, comprising a mobile trolley 1, a chemical storage tank 2, a stirring module 3, a dosing module 4, a cleaning module 5, and a monitoring module 6. The chemical storage tank 2 is fixedly placed on the mobile trolley 1 and has a dosing port 21 for adding chemicals. The stirring module 3 is used to stir the input chemicals evenly to form a reagent, and partially extends into the chemical storage tank 2. The dosing module 4 is used to output the evenly stirred reagent to an external system and is connected to the lower part of the chemical storage tank 2. The cleaning module 5 includes a spray section 51 partially located inside the chemical storage tank 2 and a drain section 52 connected to the bottom of the chemical storage tank 2. The monitoring module 6 is used to monitor the reagent status and is located on and / or inside the chemical storage tank 2.

[0021] This mobile chemical dosing unit for nuclear power plants integrates chemical storage, mixing, dosing, cleaning, and monitoring functions onto a single mobile platform, enabling flexible preparation and rapid dosing of chemicals. It effectively solves the problems of repetitive labor and low efficiency associated with fixed dosing systems, achieving multi-functionality and significantly improving maintenance efficiency during long-term operation of nuclear power plants while reducing operating costs.

[0022] Furthermore, in some embodiments, the mobile trolley 1 serves as the mobile carrier for the entire mobile chemical dosing unit in the nuclear power plant, and consists of a trolley body 11 and casters 12. The casters 12 are equipped with a braking structure, allowing the mobile chemical dosing unit to be reliably locked after reaching the target location, preventing accidental movement and ensuring operational safety. The mobile trolley 1 also includes a handle 13, fixedly connected to the trolley body 11, for easy hand-held pushing and pulling to control the movement of the unit. The braking structure is prior art and is not shown in the figures.

[0023] Furthermore, in some embodiments, the medicine storage tank 2 is fixed to the mobile trolley 1 by welding, locking, screws, or other connection methods, and is used to store the prepared medicine. The top of the medicine storage tank 2 has a dosing port 21 for adding various medicines. To facilitate the complete emptying of residual liquid or cleaning wastewater from the tank, the bottom of the medicine storage tank 2 is designed with a sloping bottom surface, which allows the liquid to collect naturally.

[0024] Furthermore, in some embodiments, the stirring module 3 extends into the storage tank 2. In this embodiment, the stirring module 3 is a manual stirring mechanism, and its transmission part extends into the tank through a sealing structure located on the top of the storage tank 2. The stirring module 3 specifically includes a stirring handle 31, a connecting rod 32, and a stirring blade 33. The upper end of the connecting rod 32 is connected to the stirring handle 31, and the lower end is connected to the stirring blade 33. Rotation sealing is achieved through a bearing or gear structure located on the top of the storage tank 2. The operator can drive the stirring blade 33 to stir the reagent in the tank by rotating the stirring handle 31. This manual design has a simple structure, low failure rate, and effectively ensures reliability in the nuclear power plant environment. It can quickly and evenly mix the added reagent with the solvent, prevent reagent precipitation, and ensure that the concentration of the output reagent meets the requirements.

[0025] Furthermore, in some embodiments, the dosing module 4 is used to deliver the reagent in the storage tank 2 to an external SIR system. The dosing module 4 includes at least one dosing pipeline 41, on which a control valve 42 is installed to control the on / off state of the reagent output. To further improve automation and dosing accuracy, the dosing module 4 may also include a power delivery unit (such as a dosing pump) and a flow metering unit 43 (such as a micro-flow meter). The power delivery unit and flow metering unit 43 are located on the dosing pipeline 41 and downstream of the control valve 42, allowing the control valve 42 to isolate the entire pressurization and metering section for easy maintenance. The dosing module 4 also includes a quick-connect structure 44 for rapid connection to an external system, located at the end of the dosing pipeline 41. The quick-connect structure 44 may be a quick-connect male connector, used to mate with a quick-connect female connector at the connection point of the SIR system, enabling rapid connection and disconnection, greatly improving operational efficiency. The mobile trolley 1 can also be equipped with a coiler for winding and storing the dosing pipeline 41, keeping the site tidy and facilitating movement. The power delivery unit is not shown in the diagram.

[0026] Furthermore, in some embodiments, the cleaning module 5 is used for internal cleaning of the device, including a spray section 51 and a drain section 52. The spray section 51 includes a water supply pipe 511 and multiple cleaning nozzles 512 connected to the water supply pipe 511. The water supply pipe 511 is provided with an interface for connecting to an external water source. The multiple cleaning nozzles 512 are disposed inside the medicine storage tank 2 and connected in series on the water supply pipe 511. When cleaning is required, the external water source is connected, and the cleaning nozzles 512 can spray and rinse the inner wall of the tank and the stirring blades 33 from different angles. The drain section 52 includes a drain pipe 521 connected to the lowest point of the bottom of the medicine storage tank 2, and a drain valve 522 disposed on the drain pipe 521. The wastewater after cleaning is collected under the guidance of the inclined bottom surface and finally discharged from the drain pipe 521 by opening the drain valve 522.

[0027] Furthermore, in some embodiments, the monitoring module 6 is used to monitor the status of the medicine inside the storage tank 2 in real time. The monitoring module 6 includes a level monitoring unit 61 for monitoring the liquid level of the medicine inside the storage tank 2 and / or an observation window 62 for directly observing the situation inside the tank. For example, the monitoring module 6 includes a level gauge for monitoring the liquid level of the medicine, which can transmit the level signal to the control room. Simultaneously, a visual observation window 62 made of acrylic sheet or tempered glass is also provided at the upper end of the storage tank 2, allowing operators to directly observe the mixing of the medicine and the liquid level height inside the tank. The combination of the level gauge and the visual window provides double protection for operation.

[0028] Furthermore, in some embodiments, the mobile dosing device for nuclear power plants also includes a storage mechanism 7 for storing the piping portion of the dosing module 4, which is mounted on the storage tank 2 or the mobile trolley 1. For example, a coiler may also be mounted on the mobile trolley 1 for coiling and storing the dosing piping 41, keeping the site tidy and facilitating movement.

[0029] The working principle of this mobile chemical dosing device for nuclear power plants is as follows: In operation, the operator first moves the device to the vicinity of the target unit using the mobile cart 1. The required chemicals and solvents are added to the storage tank 2 through the dosing port 21, and then manually stirred by the stirring module 3 until homogeneous. After confirming the chemicals are in normal condition via the monitoring module 6, the quick-connect male connector at the end of the dosing module 4 is connected to the quick-connect female connector of the SIR system. The control valve 42 is opened, and the dosing pump is started, allowing the chemicals to be precisely injected into the SIR system under the metering of the micro-flow meter. After dosing is complete, the control valve 42 and the dosing pump are closed, and the quick-connect structure 44 is disconnected. If chemical replacement or maintenance is required, the cleaning module 5 is activated for flushing and drainage.

[0030] By implementing this utility model, the following beneficial effects can be achieved: This utility model discloses a mobile dosing device for nuclear power plants, which realizes integrated operation of the entire process, including drug input, mixing, dispensing, status monitoring, and equipment cleaning. The entire system is carried by a mobile trolley 1, making it a flexible mobile dosing station that can serve multiple units in a nuclear power plant, greatly improving work efficiency and reducing labor costs.

[0031] 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, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. 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 mobile dosing device for a nuclear power plant, characterized in that include: Mobile cart (1), The medicine storage tank (2) is fixedly placed on the mobile trolley (1) and has a medicine addition port (21) for adding medicine. The stirring module (3) used to stir the input drug evenly to form a medicine agent extends partially into the medicine storage tank (2); The dosing module (4) is used to output the uniformly stirred medicine to the external system and is connected to the lower part of the medicine storage tank (2); The cleaning module (5) includes a spray section (51) partially disposed inside the medicine storage tank (2) and a sewage discharge section (52) connected to the bottom of the medicine storage tank (2); A monitoring module (6) for monitoring the status of the medicine is located on the medicine storage tank (2) and / or inside the medicine storage tank (2).

2. The mobile chemical dosing device for nuclear power plants according to claim 1, characterized in that, The mobile trolley (1) includes a trolley body (11) and casters (12), the casters (12) being equipped with a braking structure.

3. The mobile chemical addition device for a nuclear power plant according to claim 1, characterized by The bottom of the medicine storage tank (2) is an inclined bottom surface, and the sewage discharge part (52) is connected to the lowest point of the inclined bottom surface.

4. The mobile chemical dosing device for nuclear power plants according to claim 1, characterized in that, The stirring module (3) is a manual stirring mechanism, and its transmission part extends into the tank through a sealing structure set on the top of the medicine storage tank (2).

5. The mobile chemical addition device for nuclear power plants according to claim 1, characterized by The dosing module (4) includes at least one dosing pipeline (41), and the dosing pipeline (41) is equipped with a control valve (42) for controlling the on / off of the drug output.

6. The mobile chemical addition device for a nuclear power plant according to claim 5, characterized by The dosing module (4) also includes at least one of a power delivery unit and a flow metering unit (43); The power delivery unit and flow metering unit (43) are installed on the dosing pipeline (41) and located downstream of the control valve (42).

7. The mobile chemical addition device for nuclear power plants according to claim 5, characterized by The dosing module (4) also includes a quick connection structure (44) for quick connection to an external system, which is located at the end of the dosing pipeline (41).

8. The mobile chemical dosing device for nuclear power plants according to claim 1, characterized in that, The spray unit (51) includes a water supply pipe (511) and a plurality of cleaning nozzles (512) connected to the water supply pipe (511). The water supply pipe (511) is provided with an interface for connecting to an external water source.

9. The mobile chemical dosing device for nuclear power plants according to claim 1, characterized in that, The monitoring module (6) includes a liquid level monitoring unit (61) for monitoring the liquid level of the medicine in the medicine storage tank (2) and / or an observation window (62) for directly observing the situation inside the tank.

10. The mobile chemical dosing device for nuclear power plants according to any one of claims 1 to 9, characterized in that, The mobile dosing device for nuclear power plants also includes a storage mechanism (7) for storing the pipeline portion of the dosing module (4), and the storage mechanism (7) is disposed on the storage tank (2) or the mobile trolley (1).

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