Portable suspended matter sampling and filtering device for nuclear power station

Abstract

The utility model discloses a portable suspended matter sampling and filtering device for a nuclear power station, which comprises a filtering component, a flow measuring component, a bypass pipeline, a power supply component and an integrated box, and the filtering component is communicated with a sampling pipe of a secondary loop of the nuclear power station through a first pipeline and is communicated with a drainage system through a second pipeline; the filter assembly comprises a filter and a filter membrane capable of being arranged in the filter, the flow measuring assembly is communicated with the filter assembly, the bypass pipeline is connected with the filter assembly in parallel, the power supply assembly is electrically connected with the flow measuring assembly, and the filter assembly, the flow measuring assembly and the power supply assembly are all arranged on the integrated box. The first pipeline and the second pipeline are both arranged in the integration box. When the portable suspended matter sampling and filtering device for the nuclear power station is used, the integration box is directly taken to a designated position, the filtering assembly is communicated with a sampling pipe of a secondary loop of the nuclear power station, operation is easy, use is convenient and fast, and the accuracy of suspended matter content measurement can be improved.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant technology, and more specifically, to a portable suspended matter sampling and filtering device for nuclear power plants. Background Technology

[0002] Nuclear power plant secondary loops and cooling water systems require regular sampling and analysis of suspended solids (SSD) levels to evaluate water cleanliness, chemical corrosion control, and corrosion product migration. The common practice is to take a certain volume of water sample from the system on-site, and then perform offline filtration in a laboratory to trap SSDs on a pre-weighed filter membrane. The filtered membrane is then weighed again, and the SSD content in the water is calculated based on the membrane's weight gain. This offline filtration method for measuring SSDs has the following drawbacks: 1. Limited sample volume leads to significant errors; 2. Sampling and offline filtration are labor-intensive, requiring compressed air or vacuum pumps for filtration, which poses certain safety risks; 3. Operation is not convenient.

[0003] Therefore, improving the ease of operation for measuring suspended solids content in the secondary loop of nuclear power plants has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a portable suspended solids sampling and filtering device for nuclear power plants, so as to improve the ease of operation for measuring the suspended solids content in the secondary loop of nuclear power plants.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A portable suspended matter sampling and filtering device for nuclear power plants includes:

[0007] The filter assembly is connected to the sampling pipe of the secondary loop of the nuclear power plant via a first pipeline and to the drainage system via a second pipeline. The filter assembly includes a filter and a filter membrane that can be installed in the filter.

[0008] A flow measurement component is connected to a filter component.

[0009] Bypass piping, connected in parallel with the filter assembly;

[0010] The power supply component is electrically connected to the flow measurement component;

[0011] The integrated box houses the filter assembly, flow measurement assembly, and power supply assembly, while the first and second pipelines are located inside the integrated box.

[0012] Optionally, in the above-mentioned portable suspended matter sampling and filtering device for nuclear power plants, the integrated box includes two layers. The first layer of the integrated box is used to place the circuit lines of the flow measurement component, and the second layer of the integrated box is used to place the main body of the flow measurement component, the first pipeline, and the second pipeline.

[0013] The integrators and power supply components for the filter assembly and flow measurement assembly are all located on the side wall of the integrated box.

[0014] Optionally, in the aforementioned portable suspended matter sampling and filtering device for nuclear power plants, an opening is provided on the side wall of the second layer of the integrated box.

[0015] Optionally, in the aforementioned portable suspended matter sampling and filtering device for nuclear power plants, a regulating valve is installed on the bypass pipeline.

[0016] Optionally, in the aforementioned portable suspended matter sampling and filtering device for nuclear power plants, the regulating valve is a manual valve or an electric valve.

[0017] Optionally, in the aforementioned portable suspended solids sampling and filtering device for nuclear power plants, the flow measurement component is located upstream or downstream of the filter component, and the bypass pipeline is connected in parallel with the filter component and the flow measurement component.

[0018] Optionally, in the aforementioned portable suspended matter sampling and filtration device for nuclear power plants, the flow measurement component includes a flow meter, which is one of a turbine flow meter, an electromagnetic flow meter, or an ultrasonic flow meter.

[0019] Optionally, in the aforementioned portable suspended solids sampling and filtering device for nuclear power plants, the first pipeline is connected to the sampling tube via a water inlet connector.

[0020] Optionally, in the aforementioned portable suspended matter sampling and filtering device for nuclear power plants, a sampling valve is provided on the sampling tube.

[0021] As can be seen from the above scheme, the portable suspended solids sampling and filtration device for nuclear power plants disclosed in this utility model allows users to directly take the integrated box to the designated location, connect the filter assembly to the sampling pipe of the secondary loop of the nuclear power plant, and calculate the suspended solids content in the secondary loop of the nuclear power plant based on the weight gain of the filter membrane and the cumulative flow of the flow measurement assembly. The operation is simple and convenient. Compared with the offline sampling method in the prior art, the amount of water obtained is larger, and the sampling time can be extended, which can improve the accuracy of suspended solids content measurement. The bypass pipeline setting can ensure the flow stability of the filter assembly, further improving the accuracy of measurement. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The portable suspended matter sampling and filtration device for nuclear power plants disclosed in this utility model embodiment is a system Figure 1 ;

[0024] Figure 2 The portable suspended matter sampling and filtration device for nuclear power plants disclosed in this utility model embodiment is a system Figure 2 .

[0025] Among them, 10 is the filter assembly, 20 is the first pipeline, 21 is the water inlet connector, 30 is the flow measurement assembly, 40 is the second pipeline, 50 is the bypass pipeline, 51 is the regulating valve, 60 is the sampling pipe, 61 is the sampling valve, and 70 is the integrated box. Detailed Implementation

[0026] The core of this utility model lies in disclosing a portable suspended matter sampling and filtering device for nuclear power plants, so as to improve the ease of operation for measuring the suspended matter content in the secondary loop of nuclear power plants.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-2 As shown in the figure, this utility model embodiment discloses a portable suspended matter sampling and filtering device for nuclear power plants, including a filtering component 10, a flow measurement component 30, a bypass pipeline 50, a power supply component, and an integrated box 70.

[0029] The filter assembly 10 is connected to the sampling pipe 60 of the secondary loop of the nuclear power plant via a first pipe 20 and to the drainage system via a second pipe 40. The filter assembly 10 includes a filter and a filter membrane that can be installed inside the filter. The flow measurement assembly 30 is connected to the filter assembly 10, and the bypass pipe 50 is connected in parallel with the filter assembly 10. The power supply assembly is electrically connected to the flow measurement assembly 30 to supply power, preferably a 24V power supply. The filter assembly 10, the flow measurement assembly 30, and the power supply assembly are all mounted on an integrated box 70, and the first pipe 20 and the second pipe 40 are both located inside the integrated box 70.

[0030] When it is necessary to measure the suspended solids content in the secondary loop of a nuclear power plant, the staff takes the integrated box 70 to the designated location, connects the first pipeline 20 to the sampling tube 60, installs the filter membrane inside the filter, opens the bypass pipeline 50, flushes the pipeline, and fills the first pipeline 20 and the second pipeline 40 with water. The total flow rate and velocity through the filter are measured using the flow measurement component 30, with the flow rate preferably reaching 500 ml / min or higher. After filtration is completed, the first pipeline 20 is disconnected from the sampling tube 60, all components are retrieved, and the integrated box 70 is returned to the designated location. Subsequently, the filter membrane is removed and weighed. The suspended solids content in the secondary loop of the nuclear power plant is calculated based on the increase in filter membrane weight and the total flow rate. The filter membrane weighing method is a commonly used method for measuring suspended solids content, and the specific process will not be described in detail.

[0031] The bypass line 50 serves two purposes: flushing the pipeline and relieving pressure, reducing the possibility of filter membrane clogging and pipeline pressure buildup due to high suspended solids content. The integrated box 70 is designed for easy portability and relocation, as all components are integrated within it, eliminating the need for reinstallation.

[0032] The portable suspended solids sampling and filtration device for nuclear power plants disclosed in this embodiment allows for simple operation and convenient use. The integrated box 70 is moved to a designated location, and the filter assembly 10 is connected to the sampling pipe 60 of the secondary loop of the nuclear power plant. The suspended solids content in the secondary loop is calculated based on the weight gain of the filter membrane and the cumulative flow of the flow measurement assembly 30. Compared to the offline sampling method used in the prior art, it obtains a larger volume of water and extends the sampling time, thus improving the accuracy of suspended solids content measurement. The bypass pipe 50 ensures stable flow of the filter assembly 10, further improving measurement accuracy.

[0033] Furthermore, the integrated box 70 includes upper and lower layers. The first layer (upper layer) is used to house the circuit wiring of the flow measurement component 30, and the second layer (lower layer) of the integrated box 70 is used to house the main body of the flow measurement component, the first pipeline 20, and the second pipeline 40. The filter component 10, the totalizer of the flow measurement component 30, and the power supply component are all located on the side wall of the integrated box 70. It should be noted that the flow measurement component 30 includes a main body and a totalizer. The main body is mounted on the second pipeline 40 and is electrically connected to the totalizer.

[0034] Preferably, the second layer of the integrated box 70 has an opening on its side wall to facilitate the connection between the first pipe 20 and the sampling pipe 60, and to facilitate the connection between the second pipe 40 and the drainage system.

[0035] Furthermore, to facilitate handling of the integrated box 70, a handle is provided on the integrated box 70 so that staff can carry it by hand, or a handle can be provided on the side wall of the integrated box 70.

[0036] Furthermore, a regulating valve 51 is installed on the bypass pipe 50. The flow rate of water passing through the filter can be adjusted by regulating the opening degree of the regulating valve 51. The regulating valve 51 can be a manual valve (such as a ball valve, a balancing valve, etc.) or an electric valve. For ease of operation, the bypass pipe 50 is preferably installed on the side wall of the integrated box 70 to facilitate adjustment of the opening degree of the regulating valve 51. Of course, the bypass pipe 50 can also be installed on the second layer of the integrated box 70.

[0037] Furthermore, the flow measurement component 30 is located upstream or downstream of the filter component 10, and the bypass pipe 50 is connected in parallel with the filter component 10 and the flow measurement component 30. To further improve the accuracy of suspended solids content measurement, the flow measurement component 30 is preferably located downstream of the filter component 10, specifically as follows: Figure 1 As shown.

[0038] Furthermore, the flow measurement component 30 includes a flow meter, which can be a turbine flow meter, an electromagnetic flow meter, or an ultrasonic flow meter, as long as it can measure the cumulative flow and velocity of water.

[0039] Furthermore, the first pipeline 20 is connected to the sampling tube 60 via a water inlet connector 21. The water inlet connector 21 is preferably a quick connector to enable quick connection and disconnection between the first pipeline 20 and the sampling tube 60. A sampling valve 61 is provided on the sampling tube 60 to control the opening and closing of the sampling tube 60. Of course, a shut-off valve can also be provided on the first pipeline 20.

[0040] Furthermore, the drainage system includes a water tank, through which water from the nuclear power plant's secondary loop flows via a filter and through a second pipeline 40 into the water tank for recycling.

[0041] The portable suspended solids sampling and filtration device for nuclear power plants disclosed in this embodiment of the invention has the following specific measurement process:

[0042] Move the integrated box 70 to the designated position, connect the water inlet connector 21 to the sampling tube 60, so that the first pipe 20 is connected to the sampling tube 60, the second pipe 40 is connected to the drainage system, turn on the flow measurement component 30, and record the initial cumulative flow.

[0043] Open the filter and insert the filter membrane (preferably with a pore size of 0.45 micrometers) into the filter.

[0044] Open the regulating valve 51 on the bypass pipeline 50, open the sampling valve 61, flush the pipeline and fill the system with water;

[0045] Adjust the opening of the regulating valve 51 on the bypass line 50 to make the flow rate reach more than 500ml / min, and control the total filtration volume as needed;

[0046] Close the sampling valve 61, open the regulating valve 51 on the through pipe 50, record the cumulative flow of the flow measurement component 30, remove the inlet connector 21, and retract the second pipe 40.

[0047] Remove the filter membrane, weigh it, and calculate the suspended solids content based on the increase in weight of the filter membrane and the total flow rate of the sampled water.

[0048] Return the integrated box 70 to the designated position.

[0049] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The terms “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0051] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A portable suspended solids sampling and filtering device for nuclear power plants, characterized in that, include: The filter assembly (10) is connected to the sampling pipe (60) of the secondary loop of the nuclear power plant through a first pipe (20) and to the drainage system through a second pipe (40). The filter assembly (10) includes a filter and a filter membrane that can be disposed in the filter. A flow measurement component (30) is connected to the filter component (10); A bypass line (50) is connected in parallel with the filter assembly (10); A power supply component, which is electrically connected to the flow measurement component (30); The integrated box (70) is provided with the filter assembly (10), the flow measurement assembly (30) and the power supply assembly. The first pipeline (20) and the second pipeline (40) are both provided inside the integrated box (70).

2. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 1, characterized in that, The integrated box (70) includes two layers. The first layer of the integrated box (70) is used to place the circuit lines of the flow measurement component (30), and the second layer of the integrated box (70) is used to place the main body of the flow measurement component (30), the first pipeline (20) and the second pipeline (40). The filter assembly (10), the integrator of the flow measurement assembly (30), and the power supply assembly are all located on the side wall of the integrated box (70).

3. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 2, characterized in that, An opening is provided on the side wall of the second layer of the integrated box (70).

4. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 2, characterized in that, The integrated box (70) is equipped with a handle.

5. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 1, characterized in that, A regulating valve (51) is installed on the bypass pipeline (50).

6. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 5, characterized in that, The regulating valve (51) is a manual valve or an electric valve.

7. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 5, characterized in that, The flow measurement component (30) is located upstream or downstream of the filter component (10), and the bypass pipe (50) is connected in parallel with the filter component (10) and the flow measurement component (30).

8. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 1, characterized in that, The flow measurement assembly (30) includes a flow meter, which is one of a turbine flow meter, an electromagnetic flow meter, or an ultrasonic flow meter.

9. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 1, characterized in that, The first pipeline (20) is connected to the sampling pipe (60) through the water inlet connector (21).

10. The portable suspended solids sampling and filtering device for nuclear power plants as described in claim 8, characterized in that, The sampling tube (60) is equipped with a sampling valve (61).

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