An underwater sewage suction device for cleaning nuclear facility pools

Abstract

The present invention relates to the field of nuclear power plant maintenance technology, and provides an underwater sewage suction device for cleaning nuclear facility water pools, comprising: a sewage suction device, the sewage suction device comprising a first sewage suction component, a second sewage suction component, a pump component, a diversion component, an inlet pipe, an outlet pipe, and a filter component; a suction device, the suction device comprising a suction main pipe and a suction port component, the suction port component being configured to fit tightly with the nuclear facility water pool. The suction main pipe is connected to the second sewage suction component via an adapter; the maximum horizontal cross-section of the diversion component should be greater than the sum of the maximum horizontal cross-section of the first sewage suction component and the maximum horizontal cross-section of the second sewage suction component. By connecting the suction device to the sewage suction device, and driving the two sewage suction ports with a single pump, the sewage suction device has its own filtering component, and can be directly filtered without pumping the water to a special facility and then cleaning the water quality through a filter, thereby improving power efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant maintenance, in particular to an underwater sewage suction device for cleaning a water pool of a nuclear facility. Background Art

[0002] In the field of nuclear power plant maintenance technology, the cleanliness of nuclear facility water pools plays a vital role in ensuring the safe and stable operation of nuclear power plants. As key facilities in nuclear power plants, the cleanliness of the internal environment of nuclear reactor water pools and spent fuel pools is directly related to the safe operation of nuclear reactors and the storage stability of nuclear fuel.

[0003] Currently, when cleaning nuclear facility pools, the usual method is to directly pump the water from the pool to a specialized facility and then filter it to purify the water. However, this direct pumping method results in low treatment efficiency. Furthermore, current vacuum cleaners struggle to target areas with high concentrations of contaminants, resulting in significant residual stains on complex structures such as the pool bottom, corners, and spent fuel racks. Furthermore, the vacuum cleaner head, due to its shape, is difficult to reach at corners, requiring multiple repositioning of the suction head to achieve cleaning, resulting in low efficiency. Direct suction using the vacuum cleaner head also presents low efficiency issues due to its large area on the pool walls and bottom.

[0004] In view of the above-mentioned deficiencies in the existing technology, it is urgent for technical personnel in this field to design an underwater sewage suction device suitable for the complex environment of nuclear facility pools, especially for thoroughly cleaning the spent fuel grids in the spent fuel pools and the dirt on the bottom, walls and corners of the pools. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an underwater sewage suction device for cleaning water pools of nuclear facilities, comprising:

[0006] The sewage sucker includes a first sewage sucking component, a second sewage sucking component, a pump component, a diverter component, an inlet water pipe, an outlet water pipe and a filter component; one end of the pump component is connected to the first sewage sucking component, and the other end is connected to the diverter component, the diverter component is connected to the second sewage sucking component through the inlet water pipe and the outlet water pipe, and the filter component is connected to the diverter component; the pump component provides power for the entire device and transports sewage to the diverter component; the second sewage sucking component is configured to suck sewage by forming a negative pressure internally; the filter component is configured to remove impurities, suspended matter and particles in the sewage transported to the diverter component by the second sewage sucking component.

[0007] The maximum horizontal cross-section of the diverter member should be greater than the sum of the maximum horizontal cross-sections of the first dirt-absorbing member and the second dirt-absorbing member.

[0008] Preferably, the sewage suction device can also be used independently.

[0009] Furthermore, the pump component is a pump-in-tube.

[0010] Furthermore, the first suction component includes a dust box, the top and bottom surfaces of which are steel plates, and the sides of which are covered with a first mesh. An opening is provided in the steel plate on the top of the dust box, which is connected to the water inlet of the in-pipe pump. Because the first suction component is flanked by the first mesh, the in-pipe pump can clean the four walls of the water pool and the four walls of the spent fuel rack.

[0011] The lengths of the inflow pipe and the outflow pipe can be determined according to the depth of the pool to be cleaned, so that the whole is in the shape of a long rod, has a compact structure, is easy to carry, and is suitable for use in narrow spaces.

[0012] Furthermore, the diverter component includes a diverter box and a second water outlet bin, wherein the diverter box is provided with a water inlet bin and a first water outlet bin, wherein the water inlet bin is connected to the water outlet of the pump in the tube; the second water outlet bin is provided above the diverter box and is connected to the first water outlet bin, and the second water outlet bin or the first water outlet bin is connected to the filter component. By providing a second water outlet bin, the water flow can be slowed down a bit, and the U-shaped connecting pipe of the filter can also be provided in the middle position. If only a first water outlet bin is provided, it is also possible, but the body of the first water outlet bin must be large. The second water outlet bin is connected to the first water outlet bin by means of openings.

[0013] Furthermore, lifting ears are provided on both sides of the diversion box, and the sewage suction device can be placed in the pool to be cleaned through the lifting ears.

[0014] Furthermore, the second sewage suction component includes a sewage suction box, and the sewage suction box includes a first sewage suction part, a second sewage suction part and a third sewage suction part;

[0015] The first sewage suction section is provided with a first inflow chamber and an outflow chamber; the second sewage suction section is provided with a second inflow chamber, the second inflow chamber being provided with a venturi tube and an elbow. The venturi tube has an opening on one side, and the elbow is disposed within the venturi tube. One end (the inlet end) of the elbow is connected to the second inflow chamber by being inserted into the opening of the venturi tube. The inflow pipe is connected to the inflow chamber at one end and to the first inflow chamber at the other end; the outflow pipe is connected to the first outflow chamber at one end and to the outflow chamber at the other end. Preferably, at least one inflow pipe and one outflow pipe are provided. Preferably, the bottom of the inflow chamber is provided with an opening, which is connected to the water outlet of the pump-in-pipe and the inflow pipe via the opening. The top of the first inflow chamber is provided with an opening, which is connected to the inflow pipe via the opening. The bottom of the first outflow chamber is also provided with an opening, which is connected to the outflow pipe via the opening. The top of the outflow chamber is provided with an opening, which is connected to the outflow pipe via the opening.

[0016] Preferably, the elbow head includes an inlet end and an elbow head body, the inlet end of the elbow head is provided with an outer edge portion, the outer edge portion is arranged on the outer wall of the inlet of the venturi tube, and the elbow head body is arranged inside the venturi tube; the outflow bin is connected to the outlet of the venturi tube; by using the venturi tube, the kinetic energy of the water in the pipeline can be recovered, which can reduce the power consumption of the pump.

[0017] The third sewage suction part is a cavity, the third sewage suction part is connected to the inlet of the venturi tube, the bottom of the third sewage suction part is open, and the third sewage suction part is connected to the adapter;

[0018] A second mesh cover is provided between the third sewage suction part and the inlet of the venturi tube.

[0019] Preferably, the third suction unit is equipped with connectors on both sides, which connect to the camera clamp or the suction pipe clamp. Mounting the camera on the camera clamp allows observation of the pool's cleanliness and facilitates the capture and release of foreign objects. Mounting the other suction pipe on the suction pipe clamp, with the other end connected to the suction head, further expands the suction range.

[0020] Furthermore, the filtering component includes a U-shaped connecting pipe and a filter, and the filter is connected to the second water outlet tank through the U-shaped connecting pipe.

[0021] Preferably, before the in-pipe pump is started, the first sewage suction component, the second sewage suction component, the in-pipe pump, the diversion component, and the inflow pipe and outflow pipe should be filled with water.

[0022] Furthermore, the device further comprises an inhaler, the inhaler comprising an inhalation main pipe and an inhalation port component, the inhalation main pipe and the inhalation port component being connected; the inhalation port component being configured to fit tightly against a water pool of a nuclear facility. The inhalation main pipe is a hollow structure.

[0023] The suction main pipe is connected to the second sewage suction component through an adapter.

[0024] Furthermore, the suction port component includes a positioning plate, a bent pipe and a first suction port, the positioning plate is square; a first through hole is provided in the center of the positioning plate, the first suction port is welded to the four corner areas of the positioning plate, the outer wall of one port of the bent pipe is welded to the inner wall of the suction main pipe, and the other port passes through the first through hole and is welded to the first suction port; the suction area is expanded through the first suction port.

[0025] The central axis of the first suction port is parallel to a diagonal line of the positioning plate;

[0026] The four corners of the positioning plate are provided with second through holes, which are arranged outside the first suction port setting position; a hollow positioning tube is provided on the positioning plate on the side close to the suction main pipe, and the positioning tube is arranged at the second through holes.

[0027] Preferably, one end portion of the plurality of elbows is welded in the suction main pipe in a circumferentially distributed manner.

[0028] Furthermore, a connector is welded between the first suction ports, and the connector is also welded to the positioning plate.

[0029] Furthermore, a support foot is provided below the connector, and the support foot is a groove-shaped component with a groove structure.

[0030] Furthermore, the suction port component includes a suction bin, the suction bin includes a diffuser section and a flow collecting section, and the flow collecting section is provided with a second suction port;

[0031] The current collecting section is rectangular, and is provided with a roller, which protrudes from the horizontal plane where the current collecting section is located;

[0032] The horizontal plane of the roller's rolling axis is parallel to the horizontal plane of the collecting section. When the roller rolls against the pool wall, a gap exists between the suction chamber and the pool wall, ensuring a smooth flow path during water suction. The aspirator slowly rolls along the pool wall while sucking in dirt, cleaning the pool bottom or walls through a reciprocating motion.

[0033] The present invention has the following beneficial effects:

[0034] (1) The present invention connects a suction device to the sewage suction device, drives two sewage suction ports through a single pump, and has a filter component built into the sewage suction device, which can filter the water directly without pumping it to a special facility and then cleaning the water through a filter, thereby improving power efficiency;

[0035] (2) The first suction component of the present invention can be close to the side of the square hole of the spent fuel rack and the wall of the pool to suck dust, and the suction port of the second suction component can be downward and close to the bottom of the pool, or the second suction component is connected to the suction device, and the edges and corners of the pool can be directly cleaned through the first suction port, thereby achieving all-round cleaning of the four walls and corners of the spent fuel rack without the need to change positions many times, and the corners of the pool can be cleaned efficiently;

[0036] (3) The present invention is in the shape of a long rod, with a compact structure, which makes it easy to carry the suction device and suitable for use in narrow spaces. Since the suction device is long enough, it can be hung into the square hole of the grid to remove dirt from the bottom of the grid. This structure is particularly suitable for cleaning spent fuel grids.

[0037] (4) The present invention uses a pump-in-pipe as a drive, and the motor and pump body are integrated in the pipeline, which takes up little space and does not require air cooling, thus avoiding the fan energy consumption of traditional motors. It eliminates the couplings, flanges and other connecting parts required by traditional pumps, reducing mechanical friction and leakage losses during fluid transportation. Due to the wrapping effect of the pipeline wall, it can effectively block the transmission of noise and improve the comfort of the working environment.

[0038] (5) The positioning tubes in the present invention are configured as hollow structures to reduce resistance when the inhaler is lowered. Since they are arranged at the four corners of the positioning plate, they can fit closely with the side walls of the pool.

[0039] (6) The suction chamber in the present invention includes a diffusion section and a collecting section, which is conducive to the gathering and suction of sewage; the collecting section is rectangular in design and is equipped with a roller protruding from the horizontal plane and the horizontal plane where the rolling axis is parallel to the horizontal plane where the collecting section is located, which facilitates the movement of the suction device in the pool, reduces movement resistance, and improves cleaning efficiency. When the roller rolls along the wall of the pool, there is a gap between the suction chamber and the pool wall. The suction device sucks sewage while slowly rolling forward along the wall of the pool. The pool bottom or pool wall is cleaned through a back-and-forth operation, and a large area can be cleaned quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the sewage suction device in Example 1.

[0041] Figure 2 yes Figure 1 sectional view.

[0042] Figure 3 yes Figure 2 Magnified view of part I in the middle.

[0043] Figure 4 Schematic diagram of the external structure of the second dirt-absorbing component in Example 1.

[0044] Figure 5 yes Figure 2 Enlarged view of part II.

[0045] Figure 6 This is a schematic diagram of the state in which the third sewage suction part is installed with the camera through a connecting piece in Example 1.

[0046] Figure 7 This is a schematic diagram of the waste suction device used alone to clean the spent fuel grid in Example 1.

[0047] Figure 8 2 is a schematic plan view of the inhaler with an adapter in Example 2.

[0048] Figure 9 Schematic diagram of the structure of the inhaler with adapter in Example 2.

[0049] Figure 10 1 is a top view of the inhaler with an adapter in Example 2.

[0050] Figure 11 This is a schematic diagram of the connection between the connector and the support legs in Example 2.

[0051] Figure 12 1 is a schematic plan view of the inhaler with an adapter in Example 3.

[0052] Figure 13 It is a structural schematic diagram of the underwater sewage suction device in Example 4.

[0053] Figure 14 It is a structural schematic diagram of the underwater sewage suction device in Example 5. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments, but this embodiment is not intended to limit the present invention. All similar structures and similar variations of the present invention should be included in the scope of protection of the present invention. The semicolons in the present invention represent the relationship of and, and the English letters in the present invention are case-sensitive.

[0055] Example 1

[0056] This embodiment provides a sewage suction device 10 .

[0057] like Figure 1-Figure 2As shown, the sewage suction device 10 includes a first sewage suction component 1, a second sewage suction component 2, a pump component 3, a diverter component 4, an inlet pipe 51, an outlet pipe 52, and a filter component 6. One end of the pump component 3 is connected to the first sewage suction component 1, and the other end is connected to the diverter component 4. The diverter component 4 is connected to the second sewage suction component 2 through the inlet pipe 51 and the outlet pipe 52. The filter component 6 is connected to the diverter component 4. The pump component 3 is configured to provide power for the entire device and transport sewage to the diverter component 4. The second sewage suction component 2 is configured to suck sewage by generating negative pressure internally. The filter component 6 is configured to remove impurities, suspended matter, and particles from the sewage transported to the diverter component by the second sewage suction component 2. The maximum horizontal cross-section of the diverter component should be greater than the sum of the maximum horizontal cross-sections of the first sewage suction component and the second sewage suction component.

[0058] The pump component 3 is a pump-in-pipe (motor and impeller are located within the pipe), eliminating the couplings, flanges, and other connecting components required by traditional pumps, reducing mechanical friction. The moving motor rotor and impeller are enclosed by the pipe and submerged in water, reducing noise. Water cooling eliminates the fan energy consumption of traditional motors. As a result, the system is more energy-efficient than traditional pumps, reducing energy costs over the long term operation of the sewage suction unit. Noise levels are also significantly reduced, improving the working environment.

[0059] Preferably, the spacing between the first and second suction components 1, 2 can be adjusted as needed to simultaneously suction waste from different spatial locations. Furthermore, the first and second suction components 1, 2 are driven by a single pump, but the two suction components do not need to be symmetrical. Therefore, the asymmetry of the two suction components does not cause local pressure fluctuations, increase energy consumption, or increase equipment wear.

[0060] Preferably, the inflow pipe 51 and the outflow pipe 52 are made of austenitic stainless steel.

[0061] The first suction component 1 comprises a dust box, the top and bottom surfaces of which are made of steel plates, and the sides of which are lined with first mesh covers 11. An opening is provided in the steel plate on the top of the dust box, which is connected to the water inlet of the in-pipe pump. Because the first mesh covers 11 are on the sides of the first suction component 1, the in-pipe pump can clean the four walls of the pool and the four walls of the spent fuel rack 7. Preferably, the aperture of the first mesh cover 11 is 6 mm, preventing foreign matter from entering the suction chamber while allowing dust outside the mesh cover 11 to be sucked in, even particles as large as 3mm-6mm. The inlet and outlet pipes 51, 52 are welded to the four corners of the dust box, with the dust box positioned between them. The length of the inlet and outlet pipes can be determined based on the required depth of the pool to be cleaned. This results in a long, compact structure, making the suction chamber easy to transport and suitable for use in confined spaces.

[0062] like Figure 3 As shown, the diverter component 4 includes a diverter box 41, in which a water inlet tank 411 and a first water outlet tank 412 are provided. The water inlet tank 411 is connected to the water outlet of the pump in the tube. The diverter component 4 also includes a second water outlet tank 42, which is arranged above the diverter box 41 and is connected to the first water outlet tank 412. The second water outlet tank 42 or the first water outlet tank 412 is connected to the filter component 6. By providing the second water outlet tank 42, the water flow can be slowed down a bit, and the U-shaped connecting pipe of the filter can also be set in the middle position. If only the first water outlet tank is provided, it is also possible, but the tank body of the first water outlet tank must be large. The second water outlet tank is connected to the first water outlet tank by means of openings. Lifting ears 410 are provided on both sides of the diverter box 41, and the sewage suction device can be placed into the pool to be cleaned as a whole through the lifting ears 410.

[0063] like Figure 4-Figure 5 As shown, the second sewage suction component 2 includes a sewage suction box, and the sewage suction box includes a first sewage suction part 21, a second sewage suction part 22 and a third sewage suction part 23;

[0064] The first sewage suction part 21 is provided with a first inflow chamber 211 and an outflow chamber 212; the second sewage suction part 22 is provided with a second inflow chamber 221, and the second inflow chamber 221 is provided with a venturi tube 222 and an elbow 223. One side of the venturi tube 222 is provided with an opening, and the elbow 223 is arranged in the venturi tube 222. One end (inlet end) of the elbow 223 is connected to the second inflow chamber 221 by being embedded in the opening of the venturi tube 222.

[0065] The third sewage suction part 23 is a cavity, and the third sewage suction part 23 is connected to the inlet of the venturi tube 222. The bottom of the third sewage suction part 23 is open and directly connected to the outside world; that is, the bottom of the third sewage suction part 23 is provided with an opening, and the outside world can communicate with the interior of the cavity through this opening;

[0066] The first inflow chamber 211 is connected to the second inflow chamber 221. The second inflow chamber 221 includes a first inflow portion 2211 and a second inflow portion 2212. The first inflow portion 2211 is cylindrical, and the second inflow portion 2212 is truncated cone. The height of the venturi tube 222 is the same as that of the second inflow portion 2212.

[0067] Preferably, the elbow head 223 includes an inlet end 2231 and an elbow head body 2232. The inlet end of the elbow head is provided with an outer edge portion 2233, and the outer edge portion 2233 is arranged on the outer wall of the inlet of the venturi tube 222. The elbow head body 2232 is arranged inside the venturi tube 222. The outflow bin 212 is connected to the outlet of the venturi tube 222.

[0068] The venturi tube 222 includes an inlet section 2221, a contraction section 2221, a throat 2223 and a diffusion section 2224, wherein the cone angle of the contraction section 2221 is 21°±2°, and the cone angle of the diffusion section 2224 is 5° to 15°.

[0069] By using the venturi tube 222 , the kinetic energy of the water in the pipeline can be recovered, thereby reducing the power consumption of the pump.

[0070] Among them, a second mesh cover 8 is provided between the third sewage suction part 23 and the inlet of the venturi tube 222. The aperture of the second mesh cover 8 is 6 mm, which prevents foreign matter from entering the sewage suction device. The second mesh cover 8 and the third sewage suction part 23 form a suction cavity. When encountering foreign matter, such as a nut, the nut can be adsorbed on the outside of the second mesh cover and gathered in the third sewage suction part 23. Since the sucked foreign matter is all in the third sewage suction part 23, the influence of the water flow on the foreign matter can be reduced, and other things can be prevented from directly touching the foreign matter, reducing the probability of foreign matter falling during movement. When the whole is moved to the upper mouth of the underwater collection container, the pump in the pipe stops and the adsorption force disappears, and the foreign matter falls into the collection container.

[0071] One end of the inflow pipe 51 is connected to the water inlet tank 411, and the other end is connected to the first inflow tank 211; one end of the outflow pipe 52 is connected to the first water outlet tank 412, and the other end is connected to the outflow tank 212; at least one inflow pipe 51 and one outflow pipe 52 are provided. Preferably, the bottom of the inflow tank 411 is provided with an opening, which is connected to the water outlet of the pump in the tube and the inflow pipe 51 through the opening. The top of the first inflow tank 211 is provided with an opening, which is connected to the inflow pipe 51 through the opening. The bottom of the first water outlet tank 412 is also provided with an opening, which is connected to the outflow pipe 52 through the opening. The top of the outflow tank 212 is provided with an opening, which is connected to the outflow pipe 52 through the opening.

[0072] The filter component 6 includes a U-shaped connecting pipe 61 and a filter 62. The filter is connected to the second water outlet tank 42 through the U-shaped connecting pipe 61 and the flange. The filtration level of the filter 62 can be selected in the range of 0.1 to 6 microns according to actual conditions.

[0073] like Figure 6 As shown, the third suction unit 23 can be equipped with connectors 231 on both sides, which connect to the camera clamp 9 or the clamp of the suction pipe. Mounting the camera 91 on the camera clamp 9 allows observation of the cleanliness of the pool and facilitates the capture and release of foreign objects. Mounting additional suction pipes on the clamp of the suction pipe, with the other end of the suction pipe connected to the suction head, further expands the suction range. The third suction unit 23 can also be connected to an adapter (female adapter) for connection to a suction device.

[0074] To facilitate cleaning of the spent fuel grid, the maximum horizontal cross-section of the diversion box is slightly smaller than the cross-section of the spent fuel grid. The entire device can be placed into the spent fuel grid for cleaning. During use, the suction device can be hoisted into the square hole of the grid through the lifting lugs. Since the suction device is long enough, the second suction component can contact the bottom of the grid. After the suction device touches the bottom, the pump in the tube can be started to suck away the dust at the bottom, and the first suction component can be close to the side of the grid square hole to suck dust.

[0075] like Figure 7 As shown, when the waste suction device 10 of the present invention is used to clean the spent fuel rack 7 alone, the specific process is as follows:

[0076] First, use a crane to lift the lifting lug 410 of the sewage suction device and hoist it to a rough position. Then, manually adjust the position and lift the sewage suction device into the square hole of the spent fuel grid 7. Before starting the in-pipe pump, the first sewage suction component 1, the second sewage suction component 2, the in-pipe pump, the diverter component 4, the inflow pipe 51, and the outflow pipe 52 should be filled with water. When the sewage suction device touches the bottom, the in-pipe pump is started. The first mesh cover 11 of the first sewage suction component 1 is in close contact with the side of the grid square hole. Under the action of the pump, the side wall of the spent fuel grid square hole is vacuumed. The water pumped out by the pump enters the water inlet bin 411 of the diverter box, flows into the first inflow bin 211 and the second inflow bin 2 through the inflow pipe 51. 21, then enters the Venturi tube 222 through the elbow 223. As the water flows through the Venturi tube 222, negative pressure is created below the Venturi tube 222 (the third suction section), which, blocked by the second mesh cover 8, draws objects into the third suction section 23. The water then flows through the Venturi tube's outlet into the outflow chamber 212, and then through the outflow pipe 52, sequentially into the first outlet chamber 412, the second outlet chamber 42, and the filter 62. The filter 62 filters the wastewater and discharges the treated water. Once the wastewater is removed, the entire system moves to the upper opening of the underwater collection container. The pump in the pipe stops, the suction force disappears, and the foreign matter falls into the collection container, completing the suction process and cleaning the pool. Furthermore, by installing camera clamps on the connectors on both sides of the third suction section 23 and attaching a camera to the clamps, you can observe the pool's cleanliness and more easily capture and release foreign matter. Alternatively, other sewage suction pipe clamps are installed on the connectors on both sides of the third sewage suction part, and other sewage suction pipes are installed on the sewage suction pipe clamps. The other end of the sewage suction pipe is connected to the sewage suction head to further expand the spatial range of sewage suction.

[0077] The present invention uses a dual-port sewage suction structure driven by a single pump. The first sewage suction component 1 is connected to the water inlet of the pipe pump, and the pipe pump directly pumps water to achieve the purpose of sewage suction; the water pumped out by the pipe pump in the second sewage suction component 2 passes through the water inlet bin 411 of the diverter box, then through the inflow pipe 51, enters the first inflow bin 211 and the second inflow bin 221, and then passes through the elbow head 223 and flows into the venturi tube 222, forming a negative pressure at the bottom of the venturi tube 222, and the purpose of sewage suction is achieved through negative pressure adsorption. Then, from the venturi tube 222, through the outflow bin 212 and the outflow pipe 52, enters the first outlet bin 412 and the second outlet bin 42 of the diverter box, and then flows into the filter 62 to separate dust, and the clean water flows out of the filter to achieve decontamination. If a dual sewage suction port is directly set at the pump inlet, the asymmetric structure will cause local pressure fluctuations, increase energy consumption, and aggravate equipment wear. This structure does not cause pressure fluctuations, and the two sewage suction ports do not need to be arranged symmetrically, which reduces energy consumption and wear.

[0078] Example 2

[0079] This embodiment provides an inhaler, more specifically a corner inhaler, for cleaning the corners of a pool.

[0080] like Figures 8-10 As shown, the suction device 20 includes a suction main pipe 2-11 and a suction port component 2-12, which are connected to the suction main pipe 2-11 and the suction port component 2-12. The suction port component 2-12 is configured to fit tightly against the nuclear facility water pool. A sewage suction device is a device used to remove solid contaminants and impurities from liquids or semi-fluids. Since it is an existing device and is not the focus of this solution, it will not be further described. The suction main pipe 2-11 is a hollow structure.

[0081] like Figure 9-10 As shown, the suction port component 2-12 includes a positioning plate 2-121, a bend pipe 2-122 and a first suction port 2-123, and the positioning plate 2-121 is square; a first through hole 2-1211 is provided in the center of the positioning plate 2-121, and the first suction port 2-123 is welded to the four corner areas of the positioning plate 2-121, and the outer wall of one port of the bend pipe 2-122 is welded to the inner wall of the suction main pipe 2-11, and the other port passes through the first through hole 2-1211 and is welded to the first suction port 2-123; the suction area is expanded through the first suction port 2-123.

[0082] Preferably, one end of a plurality of elbows 2-122 is welded in a circumferential distribution inside the suction main pipe 2-11.

[0083] When cleaning corners, you only need to put the inhaler 20 into the corners without changing the position, and you can efficiently complete the cleaning of the corners of the pool.

[0084] The four corners of the positioning plate 2-121 are provided with second through holes 2-1212, which are arranged on the outside of the first suction port 2-123 setting position; the positioning plate 2-121 near the side of the suction main pipe 2-11 is provided with a hollow positioning pipe 2-13, which is located at the second through hole 2-1212. The positioning pipe 2-13 is set to a hollow structure to reduce the resistance when the inhaler is lowered. Since it is set at the four corners of the positioning plate, it can fit closely with the side wall of the pond, making it convenient to put the inhaler as a whole into the pond. Since the positioning pipe 2-13 is set at the four corners of the positioning plate, the outer wall of the positioning pipe 2-13 can be close to the pond wall at the pond corner, so that the corner can be cleaned better. The central axis of the first suction port 2-123 is parallel to a diagonal line of the positioning plate 2-121. A connector 2-14 is welded between the first suction ports 2-123 to increase the rigidity between the first suction ports 2-123; the connector 2-14 is also welded to the positioning plate 2-121. The connector 2-14 is a hollow structure to reduce the weight of the overall structure. Figure 11 As shown, a support foot 2-15 is provided under the connector 2-14. The support foot 2-15 is a groove-shaped component with a groove structure. On the one hand, it reduces the overall weight. On the other hand, it leaves a larger flow channel under the connector 2-14, which is convenient for absorbing water and pollutants and completing the cleaning of the area more quickly.

[0085] Since the positioning plate 2-121 is square, the two sides of the positioning plate 2-121 are close to the two sides of the pool, and the legs 2-15 of the inhaler are in contact with the bottom of the pool. At this time, the inhaler is close to the three sides of the pool, and the first suction port 2-123 is facing the corner of the pool, and cleaning of the corner can be completed at this position.

[0086] This inhaler is particularly suitable for cleaning the bottom corners of the spent fuel grid 7 in the spent fuel pool. The size of the positioning plate 2-121 is set to be slightly smaller than the square hole of the spent fuel grid 7. The inhaler is inserted into the bottom of the square hole of the spent fuel grid 7. The four first suction ports 2-123 of the inhaler are aligned with the four corners of the square hole, which can quickly and effectively complete the cleaning of the bottom corners of the square hole.

[0087] Example 3

[0088] This embodiment provides an inhaler, more specifically a surface inhaler, for cleaning the wall and bottom of a pool.

[0089] like Figure 12As shown, the inhaler 20 comprises a suction main pipe 2-11 and a suction port part 2-12b, wherein the suction main pipe 2-11 is connected to the suction port part 2-12b, and the suction port part 2-12b is configured to fit tightly with the nuclear facility pool. Wherein, the sewage suction device is a device for removing solid pollutants, impurities, etc. in a liquid or semi-fluid. It is an existing device and is not the focus of protection of this program, so it is not further explained. Wherein the letter b represents the second structure of the suction port part among the present invention. Wherein, the suction main pipe 2-11 is a hollow structure.

[0090] Wherein, the suction port component 2-12b includes a suction bin, and the suction bin includes a diffusion section 2-21 and a collecting section 2-22, and the collecting section 2-22 is provided with a second suction port. The collecting section 2-22 is rectangular, and a roller 2-23 is provided on the collecting section 2-22, and the roller 2-23 protrudes from the horizontal plane where the collecting section 2-22 is located. The horizontal plane where the rolling axis of the roller 2-23 is located is parallel to the horizontal plane where the collecting section 2-22 is located. When the roller 2-23 rolls against the wall of the pool, there is a gap between the suction bin and the wall of the pool, ensuring a smooth flow channel when absorbing water. The suction device sucks dirt while slowly rolling forward against the wall of the pool, and the pool bottom or pool wall is cleaned through a back-and-forth operation.

[0091] Example 4

[0092] like Figure 13 As shown, this embodiment provides an underwater sewage suction device for cleaning nuclear facility pools, comprising the sewage suction device of Example 1 and the suction device of Example 2. The suction main pipe is connected to the second sewage suction component via adapters 2-4. The third sewage suction portion 23 of the sewage suction device is connected to the female adapter, and the suction main pipe is connected to the male adapter.

[0093] When the spent fuel grid 7 is cleaned by the underwater sewage suction device in this embodiment, the specific process is as follows:

[0094] First, connect the suction main pipe to the second sewage suction component through the adapter 2-4, then use a crane to lift the lug 410 of the sewage suction device and lift it to a rough position. Then, manually adjust the position and lift the sewage suction device into the square hole of the spent fuel grid 7. Since the positioning plate 2-121 is square, the two sides of the positioning plate 2-121 are close to the two sides of the water tank, and the support legs 2-15 of the suction device are in contact with the bottom of the pool. At this time, the suction device is in close contact with three sides of the water tank, and the first suction port 2-123 is facing the corner of the spent fuel grid. Before the in-pipe pump is started, the first sewage suction component 1, the second sewage suction component 2, the in-pipe pump, the diverter component 4, the inflow pipe 51, the outflow pipe 52, the suction main pipe and the elbow should be filled with water. When the in-pipe pump touches the bottom, the in-pipe pump is started. The first mesh cover 11 of the first sewage suction component 1 is close to the side of the grid square hole. Under the action of the pump, the square hole of the spent fuel grid is The side walls of the spent fuel rack are cleaned. Water pumped out by the pump enters the water inlet chamber 411 of the diversion box, flows through the inflow pipe 51 into the first inflow chamber 211 and the second inflow chamber 221, and then enters the venturi tube 222 through the elbow 223. As the water flows through the venturi tube 222, negative pressure is generated below the venturi tube 222 (the third suction section). Under the action of this negative pressure, the first suction port 2-123 of the aspirator draws dust from the corners of the spent fuel rack into the third suction section 23 through the elbow and the suction main pipe. The dust is then trapped in the third suction section 23 by the second mesh cover 8. The water then flows through the outlet of the venturi tube into the outflow chamber 212, and then through the outflow pipe 52 into the first outlet chamber 412, the second outlet chamber 42, and the filter 62 in sequence. The filter 62 filters the wastewater and discharges the treated water, thus completing the suction and cleaning of the pool.

[0095] Example 5

[0096] like Figure 14 As shown, this embodiment provides an underwater sewage suction device for cleaning nuclear facility pools, comprising the sewage suction device of Example 1 and the suction device of Example 3. The suction main pipe is connected to the second sewage suction component via adapters 2-4. The third sewage suction portion 23 of the sewage suction device is connected to the female adapter, and the suction main pipe is connected to the male adapter.

[0097] When the underwater sewage suction device in this embodiment is used to clean the wall and bottom of the pool, the specific process is as follows:

[0098] First, connect the suction main pipe to the second suction component through the adapter 2-4. Then, use a crane to lift the suction device's lifting lug 410 and lift it into the water tank. Place the roller against the water tank wall or bottom. Before starting the in-pipe pump, the first suction component 1, the second suction component 2, the in-pipe pump, the diverter component 4, the inflow pipe 51, the outflow pipe 52, the suction main pipe, and the elbow should be filled with water. When the suction device touches the bottom, start the in-pipe pump. The first mesh cover 11 of the first suction component 1 is in close contact with the side of the grid square hole. Under the action of the pump, the side wall of the spent fuel grid square hole is vacuumed. The water pumped out by the pump enters the water inlet bin 411 of the diverter box and flows into the inflow pipe 51 through the inflow pipe. The water flows through the first inflow chamber 211 and the second inflow chamber 221, then enters the Venturi tube 222 through the elbow 223. As the water flows through the Venturi tube 222, negative pressure is generated below the Venturi tube 222 (the third suction section). Under this negative pressure, the second suction port 123 draws dust from the pool wall or bottom through the elbow and the main suction pipe into the third suction section 23. The dust then flows through the Venturi tube outlet into the outflow chamber 212. The dust then flows through the outlet pipe 52 into the first outlet chamber 412, the second outlet chamber 42, and the filter 62. The filter 62 filters the wastewater and discharges the treated water, completing the suction and cleaning the pool. When the crane tows the suction unit, the rollers roll against the pool wall, creating a gap between the suction chamber and the wall, ensuring a smooth flow path during suction. The suction unit slowly rolls along the pool wall while sucking in dust, cleaning the pool bottom or walls through this reciprocating motion.

[0099] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

Claims

1. An underwater sewage suction device for cleaning water pools in nuclear facilities, characterized in that: include: A sewage suction device, comprising a first sewage suction component, a second sewage suction component, a pump component, a diverter component, an inlet water pipe, an outlet water pipe, and a filter component; one end of the pump component is connected to the first sewage suction component, and the other end is connected to the diverter component, the diverter component is connected to the second sewage suction component through the inlet water pipe and the outlet water pipe, and the filter component is connected to the diverter component; The maximum horizontal cross-section of the diversion component should be greater than the sum of the maximum horizontal cross-section of the first sewage suction component and the maximum horizontal cross-section of the second sewage suction component; The pump component is a pump-in-tube; The diversion component includes a diversion box and a second water outlet bin, wherein the diversion box is provided with a water inlet bin and a first water outlet bin, wherein the water inlet bin is connected to the water outlet of the in-pipe pump; the second water outlet bin is provided above the diversion box and is connected to the first water outlet bin, and the second water outlet bin or the first water outlet bin is connected to the filter component; The second sewage suction component includes a sewage suction box, and the sewage suction box includes a first sewage suction part, a second sewage suction part and a third sewage suction part; The first sewage suction part is provided with a first inflow chamber and an outflow chamber; the second sewage suction part is provided with a second inflow chamber, the second inflow chamber is provided with a venturi tube and an elbow head, one side of the venturi tube is provided with an opening, the elbow head is arranged in the venturi tube, and one end of the elbow head is connected to the second inflow chamber by being embedded in the opening of the venturi tube; one end of the inflow pipe is connected to the water inlet chamber, and the other end is connected to the first inflow chamber; one end of the outflow pipe is connected to the first water outlet chamber, and the other end is connected to the outflow chamber; The third sewage suction part is a cavity, the third sewage suction part is connected to the inlet of the venturi tube, and the bottom of the third sewage suction part is open and connected to the adapter; A second mesh cover is provided between the third sewage suction part and the inlet of the venturi tube.

2. The underwater sewage suction device for cleaning nuclear facility pools according to claim 1, characterized in that: The first dirt suction component includes a dust box, the top and bottom surfaces of the dust box are both steel plates, and the sides of the dust box are both first mesh covers; an opening is provided on the steel plate on the top surface of the dust box and is connected to the water inlet of the pipe pump.

3. The underwater sewage suction device for cleaning nuclear facility pools according to claim 1, characterized in that: Lifting ears are provided on both sides of the diverter box.

4. The underwater sewage suction device for cleaning nuclear facility pools according to claim 1, characterized in that: The filter component includes a U-shaped connecting pipe and a filter, and the filter is connected to the second water outlet tank through the U-shaped connecting pipe.

5. The underwater sewage suction device for cleaning nuclear facility pools according to claim 1, characterized in that: Also included is an inhaler, the inhaler comprising an inhalation main pipe and an inhalation port component, the inhalation main pipe and the inhalation port component being connected; The suction main pipe is connected to the second sewage suction component through an adapter.

6. The underwater sewage suction device for cleaning a nuclear facility pool according to claim 5, characterized in that: The suction port component includes a positioning plate, an elbow and a first suction port, wherein the positioning plate is square; a first through hole is provided in the center of the positioning plate, and the first suction port is welded to the four corners of the positioning plate; the outer wall of one end of the elbow is welded to the inner wall of the suction main pipe, and the other end passes through the first through hole and is welded to the first suction port; The central axis of the first suction port is parallel to a diagonal line of the positioning plate; The four corners of the positioning plate are provided with second through holes, which are arranged outside the first suction port setting position; a hollow positioning tube is provided on the positioning plate on the side close to the suction main pipe, and the positioning tube is arranged at the second through holes.

7. The underwater sewage suction device for cleaning a nuclear facility pool according to claim 6, characterized in that: A connector is welded between the first suction ports, and the connector is also welded to the positioning plate.

8. The underwater sewage suction device for cleaning water pools of nuclear facilities according to claim 7, characterized in that: A supporting foot is provided below the connector, and the supporting foot is a groove-shaped component with a groove structure.

9. The underwater sewage suction device for cleaning water pools of nuclear facilities according to claim 5, characterized in that: The suction port component includes a suction bin, the suction bin includes a diffuser section and a flow collecting section, and the flow collecting section is provided with a second suction port; The current collecting section is rectangular, and is provided with a roller, which protrudes from the horizontal plane where the current collecting section is located; The horizontal plane where the rolling axis of the roller is located is parallel to the horizontal plane where the current collecting section is located.

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