Intercepting and cleaning device for taking water from cold source of nuclear power plant

Abstract

The utility model discloses a nuclear power plant cold source water taking intercepting and cleaning device which comprises a suction assembly, a force sensor, a flexible net bag and at least two flexible connecting ropes. The suction assembly is connected with the net bag, the net bag comprises a plurality of grid units, at least one node is formed at the joint of the adjacent grid units, one end of each connecting rope is connected with the force sensor, and the other end of each connecting rope is connected with one node; the net bag and the connecting rope have a loose state and a tensioned state respectively, and when the net bag is in the loose state, the connecting rope is also in the loose state; when the net bag is in the tensioning state, the connecting rope is also in the tensioning state, therefore, the tensioning degree of the net bag can be accurately reflected through force value data collected by the force sensor, the tensioning force of the net bag is related to the collection amount of sundries in the net bag, and therefore the collection amount of the sundries in the net bag can be reflected through the data collected by the force sensor; and personnel can know the collection amount of sundries in the net bag in time, so that the waste of energy and manpower is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power cold source water intake, in particular to a nuclear power plant cold source water intake interception and cleaning device. Background Art

[0002] A nuclear power plant's cold source interception system is a crucial facility for comprehensively protecting against marine life, floating debris, marine debris, and other debris, ensuring the safety of the plant's water intake. A suction pump is installed at the end of the interception system to remove captured marine life. In actual operation, the collection net floats on the water's surface. Because the surface is covered with mud, sand, and marine life, personnel cannot observe the debris collected from the net from the outside. The only way to gauge the debris collection status is by observing the filtration of the suctioned water. For safety reasons, even when there is less debris, the suction pump must be activated periodically for observation, resulting in a waste of energy and manpower. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an improved nuclear power plant cold source water interception and cleaning device in response to at least one defect raised in the above background technology.

[0004] The technical solution adopted by the utility model to solve the technical problem is: to provide a nuclear power plant cold source water interception and cleaning device, which includes a suction component, a force sensor, a flexible net bag and at least two flexible connecting ropes;

[0005] The suction assembly is connected to the net bag, the net bag includes a plurality of grid units, at least one node is formed at the connection between adjacent grid units, one end of each connecting rope is connected to the force sensor, and the other end of each connecting rope is connected to one of the nodes;

[0006] The net bag and the connecting rope each have a relaxed state and a tensioned state. When the net bag is in the relaxed state, the connecting rope is also in the relaxed state; when the net bag is in the tensioned state, the connecting rope is also in the tensioned state.

[0007] In some embodiments, a data acquisition unit and a control cabinet are further included. The data acquisition unit is communicatively connected to the force sensor and the control cabinet respectively, and the control cabinet is communicatively connected to the suction component.

[0008] In some embodiments, the data acquisition unit includes a transmitting transducer and a hydrophone, the transmitting transducer is communicatively connected to the force sensor and the hydrophone respectively, and the hydrophone is also communicatively connected to the control cabinet.

[0009] In some embodiments, a mounting platform is further included, wherein the mounting platform is arranged on one side of the net bag, the control cabinet is arranged on the mounting platform, and the suction assembly is at least partially arranged on the mounting platform.

[0010] In some embodiments, the installation platform is a floating platform or a fixed platform of reinforced concrete structure.

[0011] In some embodiments, the number of the connecting ropes is four, and the four connecting ropes are symmetrically arranged at four diagonal positions around the force sensor with the force sensor as a reference; and / or the connecting ropes are wrapped around the net bag.

[0012] In some embodiments, the net bag has a first open end and a second open end relative to each other, an interception area is defined between the first open end and the second open end, the suction assembly is connected to the first open end, and the force sensor is located between the first open end and the second open end.

[0013] In some embodiments, a distance between the force sensor and the first open end is greater than a distance between the force sensor and the second open end.

[0014] In some embodiments, an opening size of the first open end is smaller than an opening size of the second open end.

[0015] In some embodiments, the suction assembly includes a suction head, a suction tube, a suction pump, an output tube, a filter box, and a drain pipe;

[0016] The suction head is connected to the first open end and communicates with the interception area;

[0017] The opposite ends of the suction pipe are respectively connected to and communicate with the suction head and the suction pump;

[0018] One end of the output pipe is connected to and communicated with the suction pump, the other end of the output pipe is connected to and communicated with the filter box, and the drain pipe is connected to and communicated with the filter box.

[0019] The present invention has at least the following beneficial effects: because each connecting rope has two ends connected to a force sensor and one of the nodes of the net bag, the force sensor is anchored to the net bag via the connecting rope; when the net bag is relaxed, the connecting rope is also relaxed; when the net bag is tightened, the connecting rope is also tightened. Thus, the force data collected by the force sensor can accurately reflect the tension of the net bag. The tension of the net bag is related to the amount of debris collected within the net bag. Therefore, even if the surface of the net bag is covered with mud, sand, or marine organisms, the amount of debris collected within the net bag can be reflected by the data collected by the force sensor, allowing personnel to promptly know the amount of debris collected within the net bag, thereby avoiding waste of energy and manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 This is a structural diagram of a nuclear power plant cold source water interception and cleaning device according to the first embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0023] Figure 3 This is a partial structural diagram of a nuclear power plant cold source water interception and cleaning device according to a second embodiment of the present invention;

[0024] Figure 4 It is a partial structural diagram of a nuclear power plant cold source water interception and cleaning device according to the third embodiment of the present utility model. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that, unless otherwise clearly stipulated and limited, the terms "connected", "connected", "set" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; 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 internal connection of two elements or the interaction relationship between two elements. The terms "first", "second" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] See also Figure 1 and Figure 2 , shows a nuclear power plant cold source water interception and cleaning device (hereinafter referred to as the cleaning device) according to one embodiment of the present invention, comprising a suction assembly 10, a force sensor 20, a flexible net bag 40, and two flexible connecting ropes 30. The net bag 40, force sensor 20, and connecting ropes 30 are located underwater in an open water intake channel, while the suction assembly 10 is located in a dry environment above the water surface of the open water intake channel.

[0027] The suction assembly 10 is connected to the net bag 40 and is used to vacuum and clean the marine life, floating objects, marine garbage and other debris collected by the net bag 40. The net bag 40 is a woven mesh structure. The body of the net bag 40 defines a plurality of grid units. The grid units can be in the shape of triangles, rectangles, diamonds, other polygons, etc. At least one node 41 is formed at the connection between adjacent grid units. Specifically, as Figure 2 As shown, a node 41 is formed at the connection between one triangular grid unit and its adjacent rectangular grid unit; two nodes 41 are formed at the connection between two rectangular grid units.

[0028] One end of each connecting rope 30 is connected to the force sensor 20, and the other end of each connecting rope 30 is connected to one of the nodes 41. Thus, the force sensor 20 is anchored to the node 41 of the net bag 40 through each connecting rope 30. The net bag 40 and the connecting rope 30 each have a relaxed state and a tensioned state. The relaxed state and the tensioned state should be understood as adjectives, which refer to the state of the shape and structure of the net bag 40 (or the connecting rope 30) at a certain moment. Taking the net bag 40 as an example, when the net bag 40 is in a relaxed state, except for the force of the water flow, the net bag 40 is basically in a flexible state without force; when the debris in the net bag 40 accumulates to a certain amount, the net bag 40 reaches a tensioned state due to being stretched by the debris, and the meaning of the two states of the connecting rope 30 is the same.

[0029] The relaxed and tensioned states of the net bag 40 and the connecting rope 30 are synchronized, which can be achieved by adjusting the length of the connecting rope 30. When the net bag 40 is relaxed, the connecting rope 30 is also relaxed, and the force sensor 20 can only detect very slight water flow forces, resulting in very small force data collected by the force sensor 20. When the net bag 40 is tensioned, the connecting rope 30 is also tensioned, and the tension on the connecting rope 30 is transmitted to the force sensor 20, allowing the force sensor 20 to detect relatively larger force data. Therefore, compared to the tension caused by debris accumulation on the connecting rope 30 and net bag 40, the force exerted by the water flow on the connecting rope 30 and net bag 40 is very small. Consequently, when the net bag 40 is stretched and stretched by debris, the force data collected by the force sensor 20 will change significantly, allowing the force data collected by the force sensor 20 to accurately reflect the tension of the net bag 40. In addition, the force value data collected by the force sensor 20 changes with the tension of the connecting rope 30, and the tension of the connecting rope 30 changes with the tension of the net bag 40 and the volume of the debris in the net bag 40. The tension of the net bag 40 also changes with the volume of the debris in the net bag 40. Therefore, by utilizing the characteristic that the tension of the net bag 40 changes with the volume of the debris in the net bag 40, a relationship between the force value collected by the force sensor 20 and the amount of debris collected in the net bag 40 can be established.

[0030] In summary, since each end of the connecting rope 30 is connected to the force sensor 20 and one of the nodes 41 of the net bag 40, respectively, the force sensor 20 is anchored to the net bag 40 via the connecting rope 30. When the net bag 40 is in a relaxed state, the connecting rope 30 is also relaxed; when the net bag 40 is in a tensioned state, the connecting rope 30 is also tensioned. Therefore, the force data collected by the force sensor 20 can accurately reflect the tension of the net bag 40. The tension of the net bag 40 is reflected by the force value collected by the force sensor 20, and the tension of the net bag 40 is related to the amount of debris collected in the net bag 40. Therefore, even if the surface of the net bag 40 is adhered to mud, sand, or marine organisms, the amount of debris collected in the net bag 40 can be reflected by the data collected by the force sensor 20, allowing personnel to promptly know the amount of debris collected in the net bag 40, thereby avoiding waste of energy and manpower.

[0031] like Figure 2 As shown in FIG. 1 , in the first embodiment, the number of the connecting ropes 30 is four, and the four connecting ropes 30 are symmetrically arranged at four diagonal positions around the force sensor 20 with the force sensor 20 as the reference. Figure 2As a reference for orientation, four connecting ropes 30 are symmetrically positioned around the force sensor 20 at the upper left, lower left, upper right, and lower right corners. This connects the force sensor 20 to four diagonally-spaced nodes 41 on the net bag 40 via the connecting ropes 30. This not only helps stabilize the position of the force sensor 20 and prevents it from falling off, but also allows the force sensor 20 to detect tension from four different directions when the net bag 40 and connecting ropes 30 are tightened. The collected tension values provide a comprehensive reflection of the tension in the net bag 40 in all directions, improving the accuracy of detecting the tension in the net bag 40.

[0032] The number of connecting ropes 30 is not limited to two, but can also be three, four, five, etc. Figure 3 As shown, in the second embodiment, the cleaning device includes three connecting ropes 30, which are different from the first embodiment. The three connecting ropes 30 are set at three different positions around the force sensor 20 based on the force sensor 20, and the force sensor 20 can receive tension from three different directions. Figure 4 As shown, in the third embodiment, unlike the first embodiment, the cleaning device includes two connecting ropes 30. The two connecting ropes 30 are arranged at two different positions on opposite sides of the force sensor 20 with the force sensor 20 as a reference, so that the force sensor 20 can receive tension from two different directions.

[0033] In some embodiments, the connecting rope 30 may also be wrapped around the net bag 40 .

[0034] like Figure 1As shown, in some embodiments, the cleaning device further includes a data acquisition unit 50 and a control cabinet 60. The data acquisition unit 50 is communicatively connected to the force sensor 20 and the control cabinet 60, respectively. The control cabinet 60 is equipped with electrical control components. The data acquisition unit 50 is capable of receiving data collected by the force sensor 20 and signals emitted by the force sensor 20, and transmitting the data or signals to the control cabinet 60. The control cabinet 60 and the suction assembly 10 are connected via a cable to achieve communication between the two. The control cabinet 60 is capable of generating corresponding instructions based on the received data or signals, and transmitting corresponding electrical signals to the suction assembly 10 based on the instructions, thereby controlling the suction assembly 10 to open and close at appropriate times. For example, in one embodiment, when the force value data collected by the force sensor 20 exceeds a preset threshold, the force sensor 20 transmits a first alarm signal. The data acquisition unit 50 receives the first alarm signal and transmits a corresponding second alarm signal to the control cabinet 60. The control cabinet 60 then transmits an electrical signal indicating an opening command to the suction assembly 10, causing the suction assembly 10 to automatically open and suction the debris in the cleaning net bag 40. Alternatively, in another embodiment, the force sensor 20 continuously or intermittently converts the force data it collects into an electrical signal and transmits it to the data acquisition unit 50. The data acquisition unit 50 transmits the force data to the control cabinet 60 in real time. The control cabinet 60 receives the force data in real time. When the control cabinet 60 detects that the force data at a certain moment exceeds a preset threshold, the control cabinet 60 transmits an electrical signal of a start command to the suction assembly 10, which automatically turns on and removes debris from the net bag 40. In addition, the control cabinet 60 can also control the suction assembly 10 to automatically turn off after being turned on for a period of time.

[0035] The data acquisition unit 50 can use an underwater acoustic transducer, which refers to a device that converts electrical energy into acoustic energy. It works by utilizing the piezoelectric effect of crystal (quartz or potassium sodium tartrate) piezoelectric ceramics (barium titanate and lead zirconate titanate, etc.) or the magnetostrictive effect of iron-nickel alloy. Existing underwater acoustic transducers are generally of three types: a transmitting transducer that converts electrical signals into acoustic signals, a receiving transducer (also known as a hydrophone) that converts acoustic signals into electrical signals, and a transceiver that can both transmit and receive acoustic waves. The transceiver can convert received acoustic signals into electrical signals, and can also convert received electrical signals into acoustic signals for transmission.

[0036] Regarding the first embodiment of the data acquisition unit 50, the data acquisition unit 50 includes a transmitting transducer and a hydrophone (receiving transducer). The transmitting transducer is respectively connected to the force sensor 20 and the hydrophone for communication, and the hydrophone is also connected to the control cabinet 60 for communication. The working principle is that the force sensor 20 converts the collected force value data into an electrical signal; the transmitting transducer receives the electrical signal from the force sensor 20, and converts the electrical signal into an acoustic wave signal and transmits it to the hydrophone; the hydrophone receives the acoustic wave signal from the transmitting transducer, and converts the acoustic wave signal into an electrical signal and transmits it to the control cabinet 60. The data acquisition unit 50 is at least partially located in an underwater environment within the open water intake channel. Specifically, the transmitting transducer and the hydrophone can both be placed in an underwater environment; alternatively, only the transmitting transducer can be placed in an underwater environment, and the transmitting transducer can be placed in an above-water environment; alternatively, both the transmitting transducer and the hydrophone can be placed in an above-water environment. The transmitting transducer and the force sensor 20 can be connected by a waterproof cable. When the hydrophone is placed underwater, it can be connected to the control cabinet 60 via a waterproof cable. When the hydrophone is above water, it can be connected to the control cabinet 60 via a standard cable. The transmitting transducer and the hydrophone can be connected via either wireless or wired communication. Sound waves typically propagate more efficiently underwater than in air. Therefore, sound waves are the optimal carrier for wireless communication in underwater environments. Communication efficiency is optimal when both the transmitting transducer and the hydrophone are underwater. In this way, acoustic principles are utilized to solve the underwater communication problem of the force sensor 20.

[0037] Alternatively, in other embodiments, the data acquisition unit 50 may be entirely located in a dry environment above the water surface, and the data acquisition unit 50 may include a conventional data acquisition device. The data acquisition device above the water surface may be connected to the force sensor 20 in the underwater environment via a waterproof cable; and the data acquisition device above the water surface may be connected to the control cabinet 60 above the water surface via a conventional cable.

[0038] like Figure 1 As shown, in some embodiments, the net bag 40 has a first opening end and a second opening end relative to each other, and an interception area is defined between the first opening end and the second opening end. The suction component 10 is connected to the first opening end, so the force conditions of the first opening end and the second opening end are different. The force sensor 20 is located between the first opening end and the second opening end, that is, the force sensor 20 is not directly set at the first opening end or the second opening end, so as to avoid the force sensor 20 being too close to the first opening end or the second opening end, causing the collected force value data to be biased.

[0039] like Figure 1As shown, in some embodiments, the opening size of the first opening end is smaller than the opening size of the second opening end. The flow direction of water, and the marine life and other debris it carries, is from the second opening end toward the first opening end. Therefore, along the direction of the water flow, marine life and other debris accumulate within the interception area starting at the first opening end and, over time, gradually accumulates toward the second opening end. Because the first opening end is connected to the suction assembly 10, the net bag 40 inherently has a certain tightening force near the first opening end. Furthermore, since debris accumulation within the interception area begins at the first opening end, the net bag 40 near the first opening end reaches a tensioned state before the second opening end. Therefore, the distance between the force sensor 20 and the first opening end is greater than the distance between the force sensor 20 and the second opening end. That is, the force sensor 20 is positioned on the net bag 40 relatively closer to the second opening end. Therefore, when debris gradually accumulates near the second opening end, it can be determined that the debris collected within the net bag 40 has reached a preset threshold, and the suction assembly 10 can be activated for suction cleaning. In this way, the frequent activation of the suction assembly 10 can be avoided, and the debris in the net bag 40 can be cleaned in time.

[0040] The suction assembly 10 includes a suction head 11, a suction pipe 12, a suction pump 13, an output pipe 14, a filter box 15 and a drain pipe 16. The suction pump 13 can be a horizontal centrifugal pump. The suction head is connected to the first open end and is in communication with the interception area. The opposite ends of the suction pipe 12 are respectively connected to and in communication with the suction head 11 and the suction pump 13. One end of the output pipe 14 is connected to and in communication with the suction pump 13, the other end of the output pipe 14 is in communication with the filter box 15, and the drain pipe 16 is connected to and in communication with the filter box 15. That is, along the direction of water flow in the water intake open channel (as shown by the dotted arrow in the figure), the interception net bag 40, the suction head 11, the suction pipe 12, and the suction pump 13 are connected in sequence, and the interception net bag 40 is located upstream of the collection unit. The other end of the output pipe 14 can be mechanically connected to the filter box 15, thereby directly connecting to the interior of the filter box 15. Alternatively, the other end of the output tube 14 can be suspended from the opening of the filter box 15. As long as the output tube 14 is connected to the filter box 15, the material inside the output tube 14 can enter the filter box 15. The filter box 15 is equipped with a filter screen to intercept marine organisms, garbage, and other debris. The filtered seawater is then discharged into the sea through the drain pipe 16. When the solid matter (marine organisms, garbage, etc.) inside the filter box 15 reaches a certain level, the entire filter box 15 can be replaced.

[0041] like Figure 1As shown, the cleaning device also includes a mounting platform 70 arranged on one side of the net bag 40. The mounting platform 70 can be arranged in an open water intake channel, or the mounting platform 70 can also be arranged on land. The control cabinet 60 is arranged on the mounting platform 70, and the suction assembly 10 is at least partially arranged on the mounting platform 70. Specifically, the suction pump 13 and the filter box 15 are arranged on the mounting platform 70. At least one of the output pipe 14, the suction pipe 12 and the drain pipe 16 can also be supported on the mounting platform 70. The mounting platform 70 can provide an operating space for operation and maintenance personnel. The mounting platform 70 can be a floating platform made of high-density polyethylene (HDPE) or a fixed platform of reinforced concrete structure. The floating platform can float with the water level in the open water intake channel.

[0042] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A nuclear power plant cold source water interception and cleaning device, characterized in that: It comprises a suction assembly (10), a force sensor (20), a flexible net bag (40) and at least two flexible connecting ropes (30); The suction assembly (10) is connected to the net bag (40), the net bag (40) includes a plurality of grid units, at least one node (41) is formed at the connection between adjacent grid units, one end of each connecting rope (30) is connected to the force sensor (20), and the other end of each connecting rope (30) is connected to one of the nodes (41); The net bag (40) and the connecting rope (30) each have a relaxed state and a tensioned state. When the net bag (40) is in a relaxed state, the connecting rope (30) is also in a relaxed state; when the net bag (40) is in a tensioned state, the connecting rope (30) is also in a tensioned state.

2. The nuclear power plant cold source water interception and cleaning device according to claim 1, characterized in that: It also includes a data acquisition unit (50) and a control cabinet (60), wherein the data acquisition unit (50) is respectively connected to the force sensor (20) and the control cabinet (60), and the control cabinet (60) is connected to the suction assembly (10).

3. The nuclear power plant cold source water interception and cleaning device according to claim 2, characterized in that: The data acquisition unit (50) includes a transmitting transducer and a hydrophone, wherein the transmitting transducer is communicatively connected to the force sensor (20) and the hydrophone respectively, and the hydrophone is also communicatively connected to the control cabinet (60).

4. The nuclear power plant cold source water interception and cleaning device according to claim 2, characterized in that: It also includes a mounting platform (70), the mounting platform (70) being arranged on one side of the net bag (40), the control cabinet (60) being arranged on the mounting platform (70), and the suction assembly (10) being at least partially arranged on the mounting platform (70).

5. The nuclear power plant cold source water interception and cleaning device according to claim 4, characterized in that: The installation platform (70) is a floating platform or a fixed platform of reinforced concrete structure.

6. The nuclear power plant cold source water interception and cleaning device according to claim 1, characterized in that: The number of the connecting ropes (30) is four, and the four connecting ropes (30) are symmetrically arranged at four diagonal positions around the force sensor (20) with the force sensor (20) as a reference; And / or, the connecting rope (30) is wrapped around the net bag (40).

7. The nuclear power plant cold source water interception and cleaning device according to claim 1, characterized in that: The net bag (40) has a first opening end and a second opening end opposite to each other, an interception area is defined between the first opening end and the second opening end, the suction component (10) is connected to the first opening end, and the force sensor (20) is located between the first opening end and the second opening end.

8. The nuclear power plant cold source water interception and cleaning device according to claim 7, characterized in that: The distance between the force sensor (20) and the first open end is greater than the distance between the force sensor (20) and the second open end.

9. The nuclear power plant cold source water interception and cleaning device according to claim 7, characterized in that: An opening size of the first open end is smaller than an opening size of the second open end.

10. The nuclear power plant cold source water interception and cleaning device according to claim 7, characterized in that: The suction assembly (10) comprises a suction head (11), a suction pipe (12), a suction pump (13), an output pipe (14), a filter box (15) and a drain pipe (16); The suction head (11) is connected to the first opening end and communicates with the interception area; The opposite ends of the suction pipe (12) are respectively connected to and communicate with the suction head (11) and the suction pump (13); One end of the output pipe (14) is connected to and communicates with the suction pump (13), the other end of the output pipe (14) is connected to and communicates with the filter box (15), and the drain pipe (16) is connected to and communicates with the filter box (15).

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