Energy-saving cooling device of steamship generator set

Abstract

The invention relates to a cooling device, in particular to an energy-saving cooling device of a steamship generator set. The invention aims to provide an energy-saving cooling device for a steamship generator set, so as to solve the problems that the existing cooling device for the steamship generator set is complicated in structure and high in power consumption. According to the technical scheme, the energy-saving cooling device of the steamship generator set is characterized by comprising a water storage tank which is installed below a steamship, a water inlet of the water storage tank faces a bow, a conveying water wheel is rotatably arranged in the water storage tank and driven by a transmission mechanism, and a plurality of water storage grooves are formed in the outer circumferential face of the conveying water wheel at equal intervals; a drainage groove is formed in the inner wall of the side, opposite to the water inlet, of the water storage tank and communicates with a plurality of drainage pipes fixed to the outer side of the water storage tank and leading to the generator set.

Description

Technical Field

[0001] The invention relates to a cooling device, in particular to an energy-saving cooling device for a ship generator set. Background Art

[0002] Marine generator sets generally include common marine diesel generator sets and emergency marine diesel generator sets, which use dual energy starting methods of batteries and compressed air to ensure reliable startup in any situation. During the operation of the generator set, the torque generated by the poles and coils is converted into mechanical work. The generated mechanical and electrical work will inevitably generate a certain amount of heat, which needs to be dissipated and cooled in time.

[0003] Traditional cooling devices mostly rely on sea breeze or seawater; however, since sea breeze and sea wind are both corrosive, they are prone to damage to pipelines; and since the generator set is located at the bottom of the hull, the air cooling structure is complex. Direct water cooling requires a water pump, which consumes electricity and the water pump itself will also dissipate heat, resulting in a relatively energy-consuming cooling structure. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide an energy-saving cooling device for a ship generator set, thereby solving the problem that the existing ship generator set cooling device has a complex structure and consumes a large amount of electricity.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An energy-saving cooling device for a ship generator set, characterized in that it includes a water tank installed under the ship with a water inlet facing the bow, a transmission water wheel is rotatably arranged in the water tank, the transmission water wheel is driven by a transmission mechanism and a plurality of water storage grooves are equidistantly arranged along the outer circumference of the transmission water wheel, a drainage groove is arranged on the inner wall of the water tank on the side facing away from the water inlet, and the drainage groove is connected to a plurality of drainage pipes fixed on the outside of the water tank and leading to the generator set.

[0007] A filter plate is arranged between the water inlet in the water storage tank and the conveying water wheel. The filter plate includes a primary filter screen, a reverse osmosis membrane, an activated carbon filter plate and a secondary filter screen which are arranged in sequence from the water inlet to the conveying water wheel.

[0008] A water baffle plate that matches the outer circumference of the transmission water wheel is fixed on each water storage tank, and two annular retaining rings are respectively arranged at both ends of the transmission water wheel axis direction to block the two ends of the water storage tank; a straight plate edge on one side of the water baffle plate is connected to a groove wall on one side of the water storage tank as a whole, and the length of the water baffle plate in the arc surface direction is smaller than the opening of the water storage tank in the outer circumference direction of the transmission water wheel, so that the water storage tank on the lower side of the water delivery wheel forms an inlet facing the filter plate to facilitate the injection of seawater.

[0009] The transmission mechanism includes a driving impeller rotatably positioned on a protection box around a horizontal axis, a connecting shaft rotatably arranged between the conveying water wheel and the driving impeller, and two sets of bevel gears arranged between the impeller shaft and the connecting shaft and between the connecting shaft and the conveying water wheel shaft; the protection box is installed on the lower side of the water tank.

[0010] The water tank bodies on both sides of the water inlet are set to symmetrical cones to reduce forward resistance, and a number of guardrails are fixed at equal intervals at the water inlet to prevent debris from entering and protect the filter plate in the water tank.

[0011] A filter plate replacement structure is provided between the conveying water wheel and the water inlet in the water tank; the filter plate replacement structure includes a sealing baffle vertically inserted between the filter plate and the water inlet, and a sealing cover plate is fixed to one end of the sealing baffle extending out of the top surface of the water tank, and the left and right side plate edges of the sealing baffle are both fixed by fixing screws connected to the water tank.

[0012] The top of the water tank is respectively provided with fixing grooves cooperating with the filter plate and the sealing baffle. Another sealing cover plate is fixed to one end of the filter plate extending upward to the top surface of the water tank. The sealing cover plate is fixed to the water tank by bolts.

[0013] The protection box, the impeller shaft, the driving impeller and the water inlet are all immersed in seawater.

[0014] The drain pipe is externally connected to the cold water pipe of the generator set through a flange, and a recovery water pipe is fixed through the outer wall of the water storage tank below the drain pipe, and the recovery water pipe is externally connected to the cooling water drain pipe of the generator set through a flange.

[0015] A positioning plate and a limit plate are respectively provided on the bottom surface of the inner cavity of the water storage tank below the sealing baffle and the filter plate, and positioning grooves cooperating with the positioning plate and the limit plate are respectively opened on the bottom surfaces of the filter plate and the sealing baffle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, seawater is stored through the water inlet, and then driven upward by the impeller and transmitted to the periphery of the generator set in conjunction with the drainage pipe, so as to cool the generator set and dissipate heat without consuming the ship's own electrical energy. This solves the problem of complex structure and large power consumption of the existing ship generator set cooling device, making the cooling structure more energy-saving and environmentally friendly, while ensuring the cooling effect.

[0018] 2. In the present invention, the seawater entering the water tank can be filtered through the filter assembly at the water inlet, thereby reducing the corrosiveness of the seawater and protecting the cooling pipe. The detachable design of the filter plate facilitates regular maintenance and replacement of the filter plate.

[0019] 3. In the present invention, the cooling water after cooling can be recovered through the recovery water pipe at the bottom, and the bottom of the water storage tank is located in the seawater, so the recovered cooling water can be cooled in time; when the filter plate is replaced or the cooling water in the water storage tank is sufficient, the water inlet can be closed by the sealing baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the three-dimensional structural schematic diagrams of an embodiment of the present invention.

[0021] Figure 2 This is the second schematic diagram of the three-dimensional structure of the embodiment of the present invention.

[0022] Figure 3 yes Figure 1 A schematic cross-sectional view of the structure of the embodiment shown.

[0023] Figure 4 yes Figure 3 The schematic diagram of the state after the filter plate is removed in the shown embodiment.

[0024] Figure 5 yes Figure 1 Schematic diagram of the connection structure of the transmission water wheel in the embodiment.

[0025] Figure 6 yes Figure 1 Schematic diagram of the connection structure of the driving impeller in the embodiment.

[0026] 1. Water storage tank; 2. Water inlet; 3. Filter plate; 4. Support shaft; 5. Transmission water wheel; 5.1. Retaining ring; 6. Water storage tank; 7. Water retaining plate; 8. Lower enclosure; 9. Upper enclosure; 10. Drain trough; 11. Drain pipe; 12. Recovery water pipe; 13. Protection box; 14. Impeller shaft; 15. Driving impeller; 16. First bevel gear; 17. Connecting shaft; 18. Second bevel gear; 19. Fixing groove; 20. Positioning plate; 21. Guardrail; 22. Sealing baffle; 23. Sealing cover plate; 24. Limiting plate; 25. Fixing screw. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] The energy-saving cooling device for a ship generator set shown in the accompanying drawings comprises a water tank 1 installed under the ship, wherein the water tank 1 is provided with a water inlet 2 at one end facing the bow, a transmission water wheel 5 is rotatably provided in the water tank, the transmission water wheel is driven by a transmission mechanism and a plurality of water storage grooves 6 are equidistantly provided along the outer circumference of the transmission water wheel, a drainage groove 10 is provided on the inner wall of the water tank on the side facing away from the water inlet, and the drainage groove is connected to a plurality of drainage pipes 11 fixed on the outside of the water tank and leading to the generator set.

[0029] The water storage tank is "L"-shaped and installed on the lower side of the ship. The water storage tank bodies on both sides of the water inlet 2 are set to symmetrical cones to reduce the forward resistance. A guardrail 21 composed of a number of baffles is equidistantly fixed at the water inlet 2 to prevent debris from entering and protect the filter plate 3; the filter plate 3 is detachably fixed on the cross section of the flow channel from the water inlet 2 to the transmission water wheel in the water storage tank 1. The filter plate includes a primary filter screen, a reverse osmosis membrane, an activated carbon filter plate and a secondary filter screen in sequence from the water inlet 2 to the transmission water wheel 5 (the primary filter screen has a larger mesh size and the secondary filter screen has a smaller mesh size, both of which are used to filter solid particles); a horizontally arranged support shaft 4 is rotatably connected to the middle of the water storage tank 1 through a bearing, and the support shaft 4 is rotatably connected to the middle of the water storage tank 1 through a bearing. A transmission water wheel 5 is fixed on the rotating shaft, and the lower side of each transmission water wheel rotates toward the filter plate 3; a number of water storage tanks 6 are equidistantly provided on the outer side of the transmission water wheel 5, and a water retaining plate 7 is fixed on each water storage tank, and each water retaining plate 7 is an arc surface shape suitable for the outer circumferential surface of the transmission water wheel and coincides with the outer circumferential surface of the transmission water wheel 5; two annular retaining rings connected to the transmission water wheel are respectively provided at both ends of the axis direction of the transmission water wheel to block the two ends of the water storage tank; a straight plate edge of one side of the water retaining plate 7 is connected to a groove wall of one side of the water storage tank as a whole, and the arc surface length of the water retaining plate 7 is smaller than the opening of the water storage tank in the outer circumferential direction of the transmission water wheel, so that the water storage tank 6 on the lower side of the water wheel 5 forms an inlet (by Figure 5 It can be seen that: the inlet is composed of the straight plate edge on the other side of the water retaining plate 7, two annular retaining rings and the groove wall on the other side of the water storage tank; each water storage tank is only provided with this one inlet) for water filling. The outer side of the outer circumferential direction of the transmission water wheel 5 away from the end of the filter plate 3 is respectively sleeved with an upper enclosure 9 and a lower enclosure 8, and the inner walls of the lower enclosure and the upper enclosure are both set to be arc-shaped to match the outer surface of the transmission water wheel, and the lower enclosure and the upper enclosure are both fixed on the inner wall of the water storage tank 1; the lower enclosure 8 and the upper enclosure 9 are also separated to form a drainage groove 10, and a number of drainage pipes 11 are fixed at equal distances through the outer wall of the water storage tank 1 corresponding to the drainage groove 10, and the drainage pipe 11 is connected to the cold water pipe of the generator set through a flange; the outer wall of the water storage tank 1 below the drainage pipe 11 is fixed with a recovery water pipe 12, and the recovery water pipe 12 is connected to the cooling water drainage pipe of the generator set through a flange.

[0030] During operation, when the ship moves forward, seawater flows into the water tank through the water inlet 2, and under the power of the ship moving forward, the seawater is driven to pass through the filter plate 3 and enter the water storage tank 1, so that the seawater can be filtered and impurities in the seawater can be filtered out. The reverse osmosis membrane inside the filter plate 3 can filter out the salt in the seawater to prevent the seawater from corroding the pipeline. The filtered seawater is stored in the water storage tank 1 as cooling water; and the support shaft 4 is driven by the transmission mechanism to rotate, driving the transmission water wheel 5 to rotate counterclockwise (see Figure 3-4 ), the water baffle 7 and the water storage tank 6 can cooperate to collect the seawater at the bottom of the water storage tank 1, and when it rotates upward to the position of the drainage groove 10, the seawater in the water storage tank is poured out, and then discharged to the cold water pipe of the generator set through the drainage pipe 11, so as to cool the generator set, and the heated cooling water is discharged to the inside of the water storage tank 1 through the recovery water pipe 12; since the bottom of the water storage tank 1 is immersed in seawater, the heated cooling water in the water storage tank can be cooled by the seawater, thereby realizing the recycling of cooling water.

[0031] like Figure 2 and Figure 6 As shown, in the transmission mechanism, a protective box 13 is fixed to the bottom surface of the water tank 1 below the supporting shaft 4, and the side of the protective box facing the water inlet 2 is horizontally rotatably connected to the impeller shaft 14 through a bearing, and a driving impeller 15 is fixed to the end of the impeller shaft extending to the outside of the protective box 13; the protective box, the impeller shaft, the driving impeller 15 and the water inlet are all immersed in seawater, and the top surface of the water tank 1 near the water inlet 2 is flush with the bottom surface fixed inside the ship; the impeller shaft 14 extends to one end inside the protective box 13, and the supporting shaft 4 of the transmission water wheel 5 is fixedly sleeved with a first bevel gear 16, and the two first bevel gears 16 are both meshed with second bevel gears 18, and the two second bevel gears 18 are fixed to the upper and lower ends of the vertically arranged connecting shaft 17, and the connecting shaft 17 is rotatably connected to the bottom surface of the water tank 1 and the top surface of the protective box 13 through bearings.

[0032] During operation, the water tank moves with the ship, and the seawater drives the impeller 15 to rotate, which can drive the impeller shaft 14 to rotate. When the impeller shaft rotates, the first bevel gear 16 and the second bevel gear 18 at the bottom drive the connecting shaft 17 to rotate. The second bevel gear 18 at the top of the connecting shaft drives the first bevel gear of the supporting shaft 4 to rotate, which can drive the supporting shaft 4 to rotate and drive the water tank to rotate to collect cooling water.

[0033] As an optimization solution, Figure 3-5As shown, a filter plate replacement structure is provided between the conveying water wheel and the water inlet in the water tank; in the filter plate replacement structure: a sealing baffle 22 is vertically inserted between the filter plate 3 and the water inlet 2 in the water tank 1, and fixing grooves 19 cooperating with the filter plate 3 and the sealing baffle 22 are respectively provided on the top of the water tank 1, and a sealing cover plate 23 for sealing the fixing groove is fixed at one end of the sealing baffle 22 extending to the top surface of the water tank 1, and limiting plates 24 are fixed on both sides of the bottom surface of the sealing baffle 22, and the left and right side plate edges of the sealing baffle 22 are fixed by fixing screws 25 connected to the water tank 1, and threaded holes cooperating with the fixing screws 25 are provided at the upper and lower parts of both ends of the sealing baffle 22. A fixing groove 19 cooperating with the filter plate 3 and the sealing baffle 22 is provided on the top of the water tank 1. Another sealing cover plate 23 is fixed to one end of the filter plate 3 extending to the top surface of the water tank 1. The sealing cover plate 23 is fixed to the water tank by bolts and covers the fixing groove; a handle is fixed to the middle of the top surface of the two sealing cover plates 23; a positioning plate guardrail 20 is fixed to the inner bottom surface of the water tank 1, and a positioning groove cooperating with the positioning plate guardrail 20 is provided on the bottom surface of the filter plate 3 and the sealing baffle 22.

[0034] Finally, the fixing screws 25 are turned, the sealing baffle 22 is pulled upward, so that the limiting plate 24 abuts against the inner top surface of the water storage tank 1, and is fixed by the fixing screws 25 again.

[0035] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy-saving cooling device for a ship generator set, characterized in that: The invention comprises a water storage tank (1) installed under a ship and with a water inlet (2) facing the bow, wherein a transmission water wheel (5) is rotatably arranged in the water storage tank, wherein the transmission water wheel (5) is driven by a transmission mechanism and a plurality of water storage grooves (06) are equidistantly arranged along the outer circumference of the transmission water wheel, wherein a drainage groove (10) is arranged on the inner wall of the water storage tank on the side facing away from the water inlet, wherein the drainage groove (10) is connected to a plurality of drainage pipes (11) fixed on the outside of the water storage tank (1) and leading to a generator set.

2. The energy-saving cooling device for a ship generator set according to claim 1 is characterized in that: A filter plate (3) is arranged between the water inlet in the water storage tank and the conveying water wheel, and the filter plate (3) comprises a primary filter screen, a reverse osmosis membrane, an activated carbon filter plate and a secondary filter screen which are arranged in sequence from the water inlet (2) to the conveying water wheel (5).

3. The energy-saving cooling device for a ship generator set according to claim 2 is characterized in that: A water baffle (7) that matches the outer circumference of the transmission water wheel is fixed on each water storage tank, and two annular baffles (5.1) are respectively arranged at both ends of the transmission water wheel axis direction to seal the two ends of the water storage tank; a straight plate edge of one side of the water baffle is connected to a groove wall of one side of the water storage tank as a whole, and the length of the water baffle in the direction of the arc surface is smaller than the opening of the water storage tank in the outer circumference direction of the transmission water wheel, so that the water storage tank on the lower side of the water delivery wheel forms an inlet facing the filter plate to facilitate the injection of seawater.

4. The energy-saving cooling device for a ship generator set according to claim 3 is characterized in that: The transmission mechanism comprises the driving impeller rotatably positioned on the protection box (13) around a horizontal axis, a connecting shaft (17) rotatably arranged between the transmission water wheel and the driving impeller, and two sets of bevel gears arranged between the impeller shaft and the connecting shaft and between the connecting shaft and the transmission water wheel shaft; the protection box is installed on the lower side of the water storage tank.

5. The energy-saving cooling device for a ship generator set according to claim 4 is characterized in that: The water storage tank bodies on both sides of the water inlet (2) are arranged in symmetrical cones to reduce forward resistance, and a plurality of guardrails (21) are fixed at equal intervals at the water inlet to prevent debris from entering and protect the filter plate in the water storage tank.

6. The energy-saving cooling device for a ship generator set according to claim 5, characterized in that: A filter plate replacement structure is provided between the conveying water wheel and the water inlet in the water storage tank; the filter plate replacement structure comprises a sealing baffle (22) vertically inserted between the filter plate and the water inlet, one end of the sealing baffle (22) extending out of the top surface of the water storage tank (1) is fixed with a sealing cover plate (23), and the left and right side plate edges of the sealing baffle (22) are both matched and fixed by fixing screws (15) connected to the water storage tank.

7. The energy-saving cooling device for a ship generator set according to claim 6 is characterized in that: The top of the water storage tank is provided with fixing grooves (19) respectively matched with the filter plate (3) and the sealing baffle (22); another sealing cover plate (23) is fixed to one end of the filter plate (3) extending upward to the top surface of the water storage tank (1); the sealing cover plate (23) is fixed to the water storage tank by bolts.

8. The energy-saving cooling device for a ship generator set according to claim 7 is characterized in that: The protection box (13), the impeller shaft (14), the driving impeller (15) and the water inlet (2) are all immersed in seawater.

9. The energy-saving cooling device for a ship generator set according to claim 8, characterized in that: The drain pipe (11) is externally connected to a cooling water pipe of the generator set via a flange, a recovery water pipe (12) is fixedly passed through the outer wall of the water storage tank below the drain pipe (11), and the recovery water pipe (12) is externally connected to a cooling water drain pipe of the generator set via a flange.

10. The energy-saving cooling device for a ship generator set according to claim 9, characterized in that: Positioning plates and limit plates (24) are respectively provided on the bottom surfaces of the inner cavity of the water storage tank below the sealing baffle plate (22) and the filter plate (3), and positioning grooves cooperating with the positioning plates and limit plates are respectively provided on the bottom surfaces of the filter plate (3) and the sealing baffle plate (22).

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