Physical defoaming system for circulating water drainage of nuclear power plant

Abstract

The utility model discloses a physical defoaming system for circulating water drainage of a nuclear power plant. The physical defoaming system comprises a video monitoring system, a high-pressure water injection system and a control system, according to the physical defoaming system for the circulating water drainage of the nuclear power plant, the plurality of cameras are used for monitoring the foam condition of the circulating water drainage well, and when the control system receives the image information from the cameras and judges that the foam in the circulating water drainage well is abnormal; if yes, positioning is sent, a high-pressure water spray gun at the corresponding position is started in a linkage mode to conduct automatic spraying on the foam position of the circulating water drainage well, and the high-pressure water spray gun is stopped until the control system judges that foam is not abnormal. According to the physical defoaming system for the circulating water drainage of the nuclear power plant, physical defoaming is adopted, large potential safety hazards existing when a defoaming agent is manually added are avoided, the defoaming agent does not need to be added during physical defoaming, a large amount of reagent cost and labor cost are saved, and the use cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a defoaming system for nuclear power plants, in particular to a physical defoaming system for the circulating water drainage of nuclear power plants. Background Art

[0002] At present, the defoaming of circulating water drainage in most power plants is chemical defoaming, that is, a defoaming agent dosing system is set up to add defoaming agent into the circulating water drainage well to achieve the purpose of eliminating foam.

[0003] The cost and maintenance cost of the traditional defoaming system are relatively high. The cost of the circulating water defoaming machines for multiple units in nuclear power plants is relatively high. Among them, the annual cost of defoaming agent, the preparation of defoaming agent, the inspection and the labor cost of equipment maintenance all have relatively large costs. In view of the above situation, in order to reduce costs and improve the defoaming efficiency of circulating water, it is necessary to develop a physical defoaming system for circulating water drainage. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a physical defoaming system for the circulating water drainage of nuclear power plants.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to construct a physical defoaming system for the circulating water drainage of nuclear power plants, which includes a video monitoring system, a high-pressure water spraying system and a control system;

[0006] The video monitoring system includes multiple cameras for monitoring the foam situation in the circulating water drainage well;

[0007] The high-pressure water spraying system includes multiple high-pressure water spray guns for spraying into the circulating water drainage well;

[0008] Both the video monitoring system and the high-pressure water spraying system are communicatively connected to the control system. The control system receives the image information from the cameras and controls the high-pressure water spray guns to spray.

[0009] In some embodiments, the number of the high-pressure water spray guns is four, and the four high-pressure water spray guns are respectively arranged at the four corner positions of the circulating water drainage well.

[0010] In some embodiments, the number of the cameras is two.

[0011] In some embodiments, the high-pressure water spraying system further includes a high-pressure water pump, a main pipeline and at least one shunt pipeline;

[0012] The water inlet end of the high-pressure water pump is connected to the circulating water drainage well;

[0013] The two ends of the main flow pipeline are respectively connected to the water outlet of the high-pressure water pump and the input end of the branch flow pipeline, and the output end of the branch flow pipeline is connected to the high-pressure water spray gun.

[0014] In some embodiments, a main control valve and a pressure gauge are provided on the mainstream pipeline.

[0015] In some embodiments, each of the diversion pipes is provided with a flow meter.

[0016] In some embodiments, an input end of each of the high-pressure water spray guns is connected to a regulating valve.

[0017] In some embodiments, the control system includes a control cabinet and a host computer communicatively connected to the control cabinet.

[0018] In some embodiments, the host computer is a computer, a mobile phone or a tablet.

[0019] In some embodiments, the nuclear power plant circulating water drainage physical defoaming system also includes a wireless transmission module.

[0020] In some embodiments, the defoaming agent emergency dosing device for a nuclear power plant also includes a wireless transmission module.

[0021] The implementation of the utility model has the following beneficial effects: the physical defoaming system for circulating water drainage of a nuclear power plant uses multiple cameras to monitor the foam situation of the circulating water drainage well. When the control system receives the image information from the camera and determines that the foam in the circulating water drainage well is abnormal, it sends the positioning and starts the high-pressure water spray gun at the corresponding position to automatically spray the foam position of the circulating water drainage well until the control system determines that there is no abnormality in the foam and stops the high-pressure water spray gun. The physical defoaming system for circulating water drainage of a nuclear power plant adopts physical defoaming to avoid the greater safety hazards when adding defoaming agents manually, and physical defoaming does not require the addition of defoaming agents, saving bulk reagent costs and labor costs, and greatly reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the utility model, the 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 certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a physical defoaming system for circulating water drainage of a nuclear power plant in some embodiments of the utility model. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by terms such as "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings and are constructed and operated in a specific orientation, solely for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0025] It should also be noted that unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication between the interiors of two elements or the interaction relationship between two elements. When an element is referred to as being "above" or "below" another element, the element can be "directly" or "indirectly" located above the other element, or there may also be one or more intermediate elements. Terms such as "first", "second", "third", etc. are only for the convenience of describing the present technical solution and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Referring to Figure 1 , it is a physical defoaming system for the circulating water drainage of a nuclear power plant in some embodiments of the present utility model, which includes a video monitoring system 1, a high-pressure water jetting system 2, and a control system 3. The video monitoring system 1 includes multiple cameras 11 for monitoring the foam situation in the circulating water drainage well 4, the high-pressure water jetting system 2 includes multiple high-pressure water spray guns 21 for jetting water into the circulating water drainage well 4, and both the video monitoring system 1 and the high-pressure water jetting system 2 are communicatively connected to the control system 3. The control system 3 receives the image information from the cameras 11 and controls the high-pressure water spray guns 21 to jet water.

[0027] It can be understood that the physical defoaming system for circulating water drainage of the nuclear power plant uses multiple cameras 11 to monitor the foam situation of the circulating water drainage well 4. When the control system 3 receives the image information from the camera 11 and determines that the foam in the circulating water drainage well 4 is abnormal, it sends the positioning and starts the high-pressure water spray gun 21 at the corresponding position to automatically spray the foam position of the circulating water drainage well 4, until the control system 3 determines that there is no abnormality in the foam and stops the high-pressure water spray gun 21. The physical defoaming system for circulating water drainage of the nuclear power plant adopts physical defoaming to avoid the greater safety hazards when adding defoaming agents manually, and physical defoaming does not require the addition of defoaming agents, saving bulk reagent costs and labor costs, and greatly reducing the cost of use.

[0028] In this embodiment, there are four high-pressure water spray guns 21, which are respectively arranged at the four corners of the circulating water drainage well 4. The control system 3 can automatically determine and start 1 to 4 high-pressure water spray guns 21 for spraying according to the amount and distribution of foam in the circulating water drainage well 4.

[0029] The number of cameras 11 is two, which can monitor the circulating water drainage well 4 more comprehensively and ensure that it is in working condition 24 hours a day.

[0030] The high-pressure water jetting system 2 also includes a high-pressure water pump 22, a mainstream pipe 23 and at least one shunt pipe 24. The water inlet of the high-pressure water pump 22 is connected to the circulating water drainage well 4. The two ends of the mainstream pipe 23 are respectively connected to the water outlet of the high-pressure water pump 22 and the input end of the shunt pipe 24. The output end of the shunt pipe 24 is connected to the high-pressure water spray gun 21. The water inlet of the high-pressure water pump 22 is connected to the circulating water drainage well 4, so that water can be taken locally from the circulating water drainage well 4. In this embodiment, the number of the shunt pipes 24 is two, and each shunt pipe 24 is connected to two high-pressure water spray guns 21 at the same time. The number of the shunt pipes 24 can be adaptively adjusted according to the number of high-pressure water spray guns 21.

[0031] Furthermore, the main flow pipeline 23 is provided with a main control valve 231 and a pressure gauge 232. The main control valve 231 controls the on-off of the main flow pipeline 23, and the pressure gauge 232 is used to detect the pressure of the main flow pipeline 23. Each branch flow pipeline 24 is provided with a flow meter 241 to measure the flow value on each branch flow pipeline 24. And the input end of each high-pressure water spray gun 21 is connected to a regulating valve 211 for controlling the amount of water input to the corresponding high-pressure water spray gun 21.

[0032] The control system 3 includes a control cabinet 31 and a host computer 32 communicatively connected to the control cabinet 31. The control cabinet 31 can analyze the image information from the camera 11, determine whether defoaming is required for the foam situation in the circulating water drain well 4, and send a control instruction to the high-pressure water injection system 2 to execute. The host computer 32 is a computer, a mobile phone or a tablet, and information can be displayed and instructions can be issued through this host computer 32 for manual intervention.

[0033] The physical defoaming system for the circulating water drain of a nuclear power plant further includes a wireless transmission module. The video monitoring system 1 and the high-pressure water injection system 2 are both communicatively connected to the control system 3, and this wireless transmission module is required for both, so that operators can perform remote operations.

[0034] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, and these all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A physical defoaming system for the circulating water drainage of a nuclear power plant, characterized in that, It includes a video monitoring system (1), a high-pressure water jetting system (2), and a control system (3); The video monitoring system (1) includes multiple cameras (11) for monitoring the foam situation of the circulating water drainage well (4); The high-pressure water jetting system (2) includes multiple high-pressure water spray guns (21) for jetting water into the circulating water drainage well (4); Both the video monitoring system (1) and the high-pressure water jetting system (2) are communicatively connected to the control system (3). The control system (3) receives image information from the cameras (11) and controls the high-pressure water spray guns (21) to jet water.

2. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 1, wherein The number of the high-pressure water spray guns (21) is four, and the four high-pressure water spray guns (21) are respectively arranged at the four corner positions of the circulating water drainage well (4).

3. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 1, wherein The number of the cameras (11) is two.

4. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 1, wherein The high-pressure water jetting system (2) further includes a high-pressure water pump (22), a main pipeline (23), and at least one shunt pipeline (24); The inlet end of the high-pressure water pump (22) is connected to the circulating water drainage well (4); Both ends of the main pipeline (23) are respectively connected to the outlet end of the high-pressure water pump (22) and the input end of the shunt pipeline (24), and the output end of the shunt pipeline (24) is connected to the high-pressure water spray gun (21).

5. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 4, characterized in that, A main control valve (231) and a pressure gauge (232) are provided on the main pipeline (23).

6. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 4, wherein A flowmeter (241) is provided on each shunt pipeline (24).

7. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 1, characterized in that A regulating valve (211) is connected to the input end of each high-pressure water spray gun (21).

8. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 1, wherein The control system (3) includes a control cabinet (31) and a host computer (32) communicatively connected to the control cabinet (31).

9. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 8, characterized in that, The host computer (32) is a computer, a mobile phone, or a tablet.

10. The physical defoaming system for the circulating water drainage of a nuclear power plant according to claim 1, characterized in that, The physical defoaming system for the circulating water drainage of the nuclear power plant further includes a wireless transmission module.

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