Plate cooler of cutter suction dredger

Abstract

The invention discloses a plate cooler of a cutter suction dredger, and belongs to the technical field of coolers. A plate cooler of a cutter suction dredger comprises a cooler body arranged outside a board and further comprises a water pumping pipe arranged at a water pumping opening, and a water pump is arranged between the water pumping pipe and the water pumping opening. The filter pipe is communicated with the end, away from the water pumping opening, of the water pumping pipe, and the outer side of the filter pipe is slidably connected with a counterweight scraping ring; the collecting shell is fixedly arranged on the water pumping pipe, and a lifting assembly used for driving the counterweight scraping ring to move and a slag removing assembly used for removing sundries on the top wall of the counterweight scraping ring are arranged on the collecting shell; seawater on the periphery of the cooler is pumped through the water pump, flowing of the seawater in the cooler is accelerated, the cooler rapidly dissipates heat of fresh water, the pumped seawater is filtered through the filter pipe, the situation that the flow speed of the seawater is affected due to blockage of the water pump is avoided, and therefore the cooling effect and the cooling rate of the cooler on the fresh water are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cooler technology, and more particularly to a plate cooler for a cutter suction dredger. Background Technology

[0002] The traditional outboard box cooler works on the following principle: The box cooler consists of bundles of U-shaped tubes. Fresh water flows inside the U-shaped tube bundles, while seawater flows outside the U-shaped tubes for heat exchange, thus achieving cooling. The box cooler is fixed to the seabed valve box panel via welded base plates and connecting flanges. Fresh water enters from one side of the cooler from the top and flows out from the other side; seawater enters the cooler from the bottom of the hull, is heated, rises, and exits from the side.

[0003] However, when existing box-type coolers are in use, the heat exchange between their U-shaped tube bundles and the seawater outside the ship depends on the natural circulation of the seawater inside the box. Since the U-shaped tubes of the outboard cooler are in contact with seawater for a long time, they are severely corroded by the seawater, and there is a situation where the pipes cannot be maintained after damage. Moreover, for ships operating at fixed points, there is no obvious flow of seawater around the ship, resulting in low heat dissipation efficiency and the heat dissipation effect cannot be guaranteed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a plate cooler for a cutter suction dredger.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plate-type cooler for a cutter suction dredger includes a cooler body disposed over the hull, the cooler body being provided with an inlet and an outlet for conveying fresh water, and a pumping outlet and a drain outlet for conveying seawater, and further includes:

[0007] A water pump is installed between the water pump pipe and the water pump outlet.

[0008] The filter tube is connected to the end of the water pump pipe away from the water pump outlet, and a counterweight scraper ring is slidably connected to the outside of the filter tube.

[0009] The collection shell is fixed on the water pumping pipe and is equipped with a lifting assembly for driving the displacement of the counterweight scraper ring and a slag removal assembly for removing debris from the top wall of the counterweight scraper ring.

[0010] Preferably, the collection shell includes a shell fixedly connected to the outer wall of the pumping pipe, a discharge port opened on the bottom wall of the shell, and a miscellaneous material box disposed at the discharge port and fixedly connected to the shell. An annular groove for the movement of the counterweight scraper ring is formed between the bottom of the shell and the pumping pipe.

[0011] Preferably, the lifting assembly includes support plates fixed on both sides of the collecting shell, a rotating rod rotatably connected to the support plates, a drum mounted on the rotating rod, and a traction member connected to the drum. The end of the traction member away from the drum is connected to an L-shaped rod connected to the bottom of the counterweight scraper ring. A drive motor for driving the rotating rod to rotate is fixed on one of the support plates.

[0012] Preferably, the traction component includes a traction rope wound around a drum and an elastic telescopic rod connected to the traction rope. The end of the traction rope away from the drum passes through the collection shell and is connected to an L-shaped rod via the elastic telescopic rod.

[0013] Preferably, the bottom of the counterweight scraper ring is fixedly provided with a stop block that moves against the bottom wall of the collection shell, and the bottom of the collection shell is provided with a push switch that moves against the top of the elastic telescopic rod. The push switch is electrically connected to the drive motor.

[0014] Preferably, the slag removal assembly includes a rotating shell rotatably connected inside the collection shell, a toggle block fixed on the rotating shell, and a movable gear fixed on the top of the rotating shell. The rotating rod is provided with a drive gear that meshes with the movable gear. The toggle block moves against the inner wall of the collection shell and the top wall of the counterweight scraper ring. Both sides of the toggle block are provided with inclined surfaces.

[0015] Preferably, the drain outlet is connected to a drain pipe, and the end of the drain pipe away from the drain outlet is located on the side of the dredger away from the pumping pipe.

[0016] Preferably, the end of the drain pipe away from the drain outlet is provided with an upwardly inclined bend, and an atomizing nozzle is provided on the bend.

[0017] Preferably, a rotating shaft is rotatably connected inside the drain pipe, a force-bearing plate is provided on the shaft body inside the drain pipe, a water-dispelling plate is provided on the shaft body outside the drain pipe, and a flow guide plate is provided inside the drain pipe in front of the rotating shaft, with several inclined flow guide grooves formed on the flow guide plate.

[0018] Preferably, the cooler body includes a fixed clamping plate, a movable clamping plate, and a plate gasket assembly disposed between the fixed clamping plate and the movable clamping plate. A fastening screw is provided between the fixed clamping plate and the movable clamping plate. The plate gasket assembly is formed by stacking multiple corrugated plates, and a flow channel cross section is formed between two adjacent corrugated plates.

[0019] Compared with the prior art, the present invention provides a plate cooler for a cutter suction dredger, which has the following beneficial effects:

[0020] 1. The plate cooler of this cutter suction dredger uses a water pump to draw seawater from the surrounding area of ​​the cooler, accelerating the flow of seawater within the cooler and enabling the cooler to quickly dissipate heat from the fresh water. Furthermore, the seawater is filtered through filter pipes to prevent debris from clogging the water pump and affecting the seawater flow rate, thereby ensuring the cooling effect and cooling rate of the fresh water. At the same time, it solves the problem that thin-walled tubes of box-type coolers are prone to corrosion and perforation.

[0021] 2. The plate cooler of this cutter suction dredger uses a counterweight scraper ring to remove debris or moss attached to the outside of the filter pipe, ensuring the speed at which seawater passes through the filter pipe, thereby ensuring the cooling effect and cooling rate of the cooler for fresh water.

[0022] 3. The plate cooler of this cutter suction dredger effectively prevents the high-temperature seawater discharged from the drain pipe from being re-pumped by the water pump by keeping the water discharged from the drain pipe away from the seawater being pumped by the water pump. This ensures that the initial temperature of the seawater pumped by the water pump is low, and further ensures the cooling effect and cooling rate of the cooler for freshwater. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the external structure of the water pumping pipe of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the water pumping pipe of the present invention.

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram of section A in the middle;

[0027] Figure 5 This is a schematic cross-sectional view of the collection shell of the present invention;

[0028] Figure 6 This is a schematic diagram of the external structure of the drain pipe of the present invention;

[0029] Figure 7 This is a cross-sectional structural diagram of the drainage pipe of the present invention.

[0030] In the diagram: 1. Cooler body; 101. Inlet; 102. Outlet; 103. Pumping port; 104. Drainage port; 2. Pumping pipe; 3. Water pump; 4. Filter pipe; 5. Counterweight scraper ring; 501. Stop block; 6. Collection shell; 601. Shell; 602. Discharge port; 603. Miscellaneous material bin; 604. Annular groove; 7. Support plate; 701. Rotating rod; 702. Drum; 703. Traction component; 7031. Traction rope; 7032. 704. Elastic telescopic rod; 705. L-shaped rod; 706. Drive motor; 8. Press switch; 9. Rotating housing; 907. Toggle block; 908. Movable gear; 10. Drive gear; 11. Drain pipe; 12. Bending pipe; 121. Atomizing nozzle; 13. Rotating shaft; 131. Force plate; 132. Water deflector plate; 14. Guide plate; 15. Fixed clamping plate; 151. Movable clamping plate; 152. Plate and gasket assembly; 153. Fastening screw. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figures 1 to 3As shown, this embodiment proposes a plate cooler for a cutter suction dredger, including a cooler body 1 installed outside the hull. The cooler body 1 is provided with an inlet 101 and an outlet 102 for conveying fresh water, and a pumping port 103 and a draining port 104 for conveying seawater. It also includes a pumping pipe 2, a filter pipe 4, and a collection shell 6. The pumping pipe 2 is installed at the pumping port 103. A water pump 3 is installed between the pumping pipe 2 and the pumping port 103. The filter pipe 4 is connected to the end of the pumping pipe 2 away from the pumping port 103. A counterweight scraper ring 5 is slidably connected to the outside of the filter pipe 4. The collection shell 6 is fixed on the pumping pipe 2. The collection shell 6 is provided with a lifting assembly for driving the displacement of the counterweight scraper ring 5 and a slag removal assembly for removing debris from the top wall of the counterweight scraper ring 5.

[0035] Furthermore, the cooler body 1 includes a fixed clamping plate 15, a movable clamping plate 151, and a plate gasket assembly 152 disposed between the fixed clamping plate 15 and the movable clamping plate 151. A fastening screw 153 is provided between the fixed clamping plate 15 and the movable clamping plate 151. The plate gasket assembly 152 is formed by stacking multiple corrugated plates, and a flow channel cross section is formed between two adjacent corrugated plates.

[0036] High-temperature freshwater on board enters through inlet 101 and exits through outlet 102 via pipes. Pump 3 is controlled to draw seawater through filter pipe 4 at the end of suction pipe 2. Filter pipe 4 is installed below the seawater level, allowing seawater to flow within the cooler body 1. The seawater flows within a channel formed between adjacent corrugated plates, which are inverted, causing the fluid to flow in a three-dimensional rotational manner. This generates turbulence at low Reynolds numbers, resulting in a high heat transfer coefficient. The pump 3 draws seawater from the area around filter pipe 4, rather than relying on natural flow, accelerating seawater flow within the cooler and enabling rapid heat dissipation from the freshwater. The filter pipe 4 also filters the drawn seawater, preventing debris from clogging the pump 3 and affecting the seawater flow rate, thus ensuring the cooler's cooling effect and rate. It should be noted that the plate cooler uses corrosion-resistant metal plates internally, simultaneously solving the problem of thin-walled tubes in box coolers being prone to corrosion and perforation.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the collecting shell 6 further includes a shell 601 fixedly connected to the outer wall of the pumping pipe 2, a discharge port 602 opened on the bottom wall of the shell 601, and a miscellaneous material box 603 provided at the discharge port 602 and fixedly connected to the shell 601. An annular groove 604 for the movement of the counterweight scraper ring 5 is formed between the bottom of the shell 601 and the pumping pipe 2.

[0038] Furthermore, the lifting assembly includes support plates 7 fixed on both sides of the collection shell 6, a rotating rod 701 rotatably connected to the support plates 7, a drum 702 set on the rotating rod 701, and a traction member 703 connected to the drum 702. The end of the traction member 703 away from the drum 702 is connected to an L-shaped rod 704 connected to the bottom of the counterweight scraper ring 5. A drive motor 705 for driving the rotating rod 701 to rotate is fixed on one of the support plates 7.

[0039] Furthermore, the traction member 703 includes a traction rope 7031 wound around the drum 702 and an elastic telescopic rod 7032 connected to the traction rope 7031. The end of the traction rope 7031 away from the drum 702 passes through the collection shell 6 and is connected to the L-shaped rod 704 through the elastic telescopic rod 7032.

[0040] Furthermore, the bottom of the counterweight scraper ring 5 is fixedly provided with a stop block 501 that moves against the bottom wall of the collection shell 6, and the bottom of the collection shell 6 is provided with a push switch 8 that moves against the top of the elastic telescopic rod 7032. The push switch 8 is electrically connected to the drive motor 705.

[0041] Furthermore, the slag removal assembly includes a rotating shell 9 rotatably connected inside the collection shell 6, a toggle block 901 fixed on the rotating shell 9, and a movable gear 902 fixed on the top of the rotating shell 9. A drive gear 10 meshing with the movable gear 902 is provided on the rotating rod 701. The toggle block 901 moves against the inner wall of the collection shell 6 and the top wall of the counterweight scraper ring 5. Both sides of the toggle block 901 are set as inclined surfaces.

[0042] Specifically, by controlling the operation of the drive motor 705, the output shaft of the drive motor 705 drives the rotating rod 701 to rotate. The drum 702 on the rotating rod 701 pulls the traction rope 7031. The traction rope 7031 can be made of corrosion-resistant metal wire. The traction rope 7031 pulls the L-shaped rod 704 upward through the elastic telescopic rod 7032, causing the L-shaped rod 704 to move the counterweight scraper ring 5 upward along the filter tube 4. The counterweight scraper ring 5 scrapes away debris or moss attached to the outside of the filter tube 4, ensuring the speed at which seawater passes through the filter tube 4, thereby ensuring the cooling effect and cooling rate of the cooler for fresh water. Subsequently, the counterweight scraper ring 5 moves upward to the annular groove 604, and the top wall of the counterweight scraper ring 5 is on the same plane as the bottom wall of the shell 601. At this time, the stop block 501 abuts against the bottom wall of the collection shell 6. As the traction rope 7031 continues to be pulled, the elastic telescopic rod 7032 is stretched, and the rotating rod 7031... When rotating, the drive gear 10 meshes with the movable gear 902, causing the movable gear 902 to drive the actuating block 901 to rotate through the rotating shell 9. The actuating block 901 scrapes away debris from the inner wall of the shell 601 and the counterweight scraper ring 5. Under the action of centrifugal force, the debris falls into the debris box 603 during the scraping process. While the elastic telescopic rod 7032 is stretched, the actuating block 901 has sufficient time to scrape away debris from the counterweight scraper ring 5, which is on the same plane as the bottom wall of the shell 601. As the elastic telescopic rod 7032 is continuously stretched, the end of the elastic telescopic rod 7032 abuts against the press switch 8. The press switch 8 controls the drive motor 705 to rotate in the opposite direction, and the rotating rod 701 releases the traction rope 7031. The counterweight scraper ring 5 moves down under its own weight, preparing for the subsequent scraping of debris from the filter tube 4.

[0043] like Figure 1 and Figure 6 As shown, in a preferred embodiment, based on the above method, the drain outlet 104 is further connected to a drain pipe 11, and the end of the drain pipe 11 away from the drain outlet 104 is located on the side of the dredger away from the pumping pipe 2.

[0044] By keeping the water discharged from the drain pipe 11 away from the seawater being drawn in by the water pump 3, the high-temperature seawater discharged is effectively prevented from being drawn in again by the water pump 3, thus ensuring that the initial temperature of the seawater drawn in by the water pump 3 is low, and further ensuring the cooling effect and cooling rate of the cooler on fresh water.

[0045] like Figure 1 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, a further step is to provide an inclined upward bent pipe 12 at the end of the drain pipe 11 away from the drain outlet 104, and an atomizing nozzle 121 is provided on the bent pipe 12.

[0046] Furthermore, a rotating shaft 13 is rotatably connected inside the drain pipe 11. A force-bearing plate 131 is provided on the shaft body inside the drain pipe 11, and a water-dispelling plate 132 is provided on the shaft body outside the drain pipe 11. A guide plate 14 is provided inside the drain pipe 11 in front of the rotating shaft 13, and several inclined guide grooves are provided on the guide plate 14.

[0047] Seawater discharged from drain pipe 11 impacts force plate 131 under the action of guide plate 14. Force plate 131 drives rotating shaft 13 to rotate, thereby driving water-dispelling plate 132 to rotate. It should be noted that the end of drain pipe 11 should be located close to the sea surface so that water-dispelling plate 132 can dispel the seawater on the sea surface. Seawater enters bent pipe 12 from drain pipe 11, which guides the seawater upward. Then, the seawater is sprayed upward in the form of atomization nozzle 121, which increases the contact area and contact time between seawater and air, making it easier for the temperature of seawater after passing through the cooler to drop. At the same time, water-dispelling plate 132 quickly dispels the hot seawater falling on the sea surface, which accelerates the flow speed of seawater, thereby preventing seawater from accumulating in the same place and causing the seawater in that place to heat up and affect the marine ecology.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plate-type cooler for a cutter suction dredger, comprising a cooler body (1) disposed outside the hull, the cooler body (1) being provided with an inlet (101) and an outlet (102) for conveying fresh water, and an inlet (103) and an outlet (104) for conveying seawater, characterized in that, Also includes: A water pump (3) is provided between the water pump (2) and the water inlet (103). The filter tube (4) is connected to the end of the water pump (2) away from the water pump (103), and a counterweight scraper ring (5) is slidably connected to the outside of the filter tube (4). And a collection shell (6), which is fixed on the water pumping pipe (2). The collection shell (6) is provided with a lifting assembly for driving the displacement of the counterweight scraper ring (5) and a slag removal assembly for removing debris from the top wall of the counterweight scraper ring (5).

2. The plate cooler for a cutter suction dredger according to claim 1, characterized in that, The collection shell (6) includes a shell (601) fixedly connected to the outer wall of the pumping pipe (2), a discharge port (602) opened on the bottom wall of the shell (601), and a miscellaneous material box (603) fixedly connected to the shell (601) at the discharge port (602). An annular groove (604) for the movement of the counterweight scraper ring (5) is formed between the bottom of the shell (601) and the pumping pipe (2).

3. The plate cooler for a cutter suction dredger according to claim 2, characterized in that, The lifting assembly includes support plates (7) fixed on both sides of the collection shell (6), a rotating rod (701) rotatably connected to the support plates (7), a drum (702) set on the rotating rod (701), and a traction member (703) connected to the drum (702). The end of the traction member (703) away from the drum (702) is connected to an L-shaped rod (704) connected to the bottom of the counterweight scraper ring (5). A drive motor (705) for driving the rotating rod (701) to rotate is fixed on one of the support plates (7).

4. The plate cooler for a cutter suction dredger according to claim 3, characterized in that, The traction component (703) includes a traction rope (7031) wound around a drum (702) and an elastic telescopic rod (7032) connected to the traction rope (7031). The end of the traction rope (7031) away from the drum (702) passes through the collection shell (6) and is connected to the L-shaped rod (704) through the elastic telescopic rod (7032).

5. A plate cooler for a cutter suction dredger according to claim 4, characterized in that, The bottom of the counterweight scraper ring (5) is fixed with a stop block (501) that moves against the bottom wall of the collection shell (6). The bottom of the collection shell (6) is provided with a push switch (8) that moves against the top of the elastic telescopic rod (7032). The push switch (8) is electrically connected to the drive motor (705).

6. The plate cooler for a cutter suction dredger according to claim 5, characterized in that, The slag removal assembly includes a rotating shell (9) rotatably connected inside the collection shell (6), a toggle block (901) fixed on the rotating shell (9), and a movable gear (902) fixed on the top of the rotating shell (9). The rotating rod (701) is provided with a drive gear (10) meshing with the movable gear (902). The toggle block (901) moves against the inner wall of the collection shell (6) and the top wall of the counterweight scraper ring (5). Both sides of the toggle block (901) are set as inclined surfaces.

7. A plate cooler for a cutter suction dredger according to claim 1, characterized in that, The drain outlet (104) is connected to a drain pipe (11), and the end of the drain pipe (11) away from the drain outlet (104) is located on the side of the dredger away from the pumping pipe (2).

8. A plate cooler for a cutter suction dredger according to claim 7, characterized in that, The drain pipe (11) is provided with an inclined upward bend pipe (12) at one end away from the drain outlet (104), and an atomizing nozzle (121) is provided on the bend pipe (12).

9. A plate cooler for a cutter suction dredger according to claim 8, characterized in that, A rotating shaft (13) is rotatably connected inside the drain pipe (11). A force-bearing plate (131) is provided on the shaft body inside the drain pipe (11). A water-dispelling plate (132) is provided on the shaft body outside the drain pipe (11). A guide plate (14) is provided inside the drain pipe (11) in front of the rotating shaft (13). Several inclined guide grooves are provided on the guide plate (14).

10. A plate cooler for a cutter suction dredger according to claim 1, characterized in that, The cooler body (1) includes a fixed clamping plate (15), a movable clamping plate (151), and a plate gasket group (152) disposed between the fixed clamping plate (15) and the movable clamping plate (151). A fastening screw (153) is provided between the fixed clamping plate (15) and the movable clamping plate (151). The plate gasket group (152) is formed by stacking multiple corrugated plates, and a flow channel cross section is formed between two adjacent corrugated plates.

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