A liquid level control device for a ship water tank

Abstract

The present invention discloses a liquid level control device for a ship water tank, comprising a water tank, a second guide plate, a first guide plate, a swing adjustment structure and a float limit structure; the float limit structure divides the water tank into an upper water tank and a lower water tank; the second guide plate is connected to the first end of a connecting rod, the second end of the connecting rod is connected to a heavy ball, and the second guide plate and the connecting rod are arranged at an angle so that the second guide plate is connected to the first guide plate or is arranged at intervals on one side of the first guide plate through the swing angle of the heavy ball. The liquid level control device for a ship water tank provided by the present invention, when the ship swings and tilts, the float limit structure blocks the small holes on the tilted side under the combined action of buoyancy and additional lift, preventing liquid from flowing out of the small holes on the tilted side of the water tank. At the same time, the swing adjustment structure can be controlled by gravity to guide cooling water to flow into the non-tilted side, preventing the problem of lowering the filling height of the centrifugal pump due to the suppression of the swaying of the ship.

Description

Technical Field

[0001] The invention relates to the field of ship fluid transportation, and in particular to a ship water tank liquid level control device. Background Art

[0002] On civil ships with steam turbine power as the driving force, the cooler is the main equipment for cooling steam on the ship. After the steam expands and works in the steam turbine, it is discharged into the cooler and cooled by the water outside the ship to condense into water. The condensed water will flow into the water tank below the cooler, and the water in the water tank is extracted by a centrifugal pump and transported to the boiler to heat and form steam, forming a closed cycle. Due to the limited space of the ship itself and the compact layout of the equipment, the filling height of the centrifugal pump will not be too large. Under normal and stable navigation conditions, the liquid level of the water tank is basically maintained constant, which can meet the filling height required for the normal operation of the centrifugal pump. However, during the navigation of the ship, due to the influence of ocean conditions, swaying and other phenomena often occur, which causes the liquid level in the water tank to sway periodically. The swaying of the liquid level will reduce the effective filling height of the centrifugal pump, and in severe cases, it will even cause cavitation problems in the centrifugal pump. In order to prevent the centrifugal pump from cavitation due to the swaying of the water tank liquid level under the swaying conditions of the ship, it is necessary to adopt a method to suppress the swaying of the water tank liquid level under the swaying conditions.

[0003] Traditional methods of controlling liquid levels mostly use floats to control valve switches to replenish water tanks. The float floats on the surface of the liquid. When the liquid level in the water tank is lower than the set value, the float drops and drives the switch connected to it to open the water replenishment valve for water replenishment. When the liquid level rises back to the set value, the float floats up with the liquid surface to disconnect the valve switch and the water replenishment ends. This type of liquid level control method has the problem of frequent opening and closing of the valve switch, which is easy to damage. It is also not suitable for the liquid level control of the ship cooler water tank. When the ship is swaying, the liquid level of the water tank will frequently trigger the valve switch connected to the float, and the liquid level change caused by the ship's swaying does not change the water volume in the water tank. If the valve switch is triggered to open the water replenishment, the actual water volume in the water tank will be greater than the set value. When the ship is reset, the water level in the water tank will be higher than the set value. If the switch is frequently triggered to replenish water, the water level in the water tank will become higher and higher. To restore the water level to normal, it is necessary to increase the speed of the centrifugal pump and increase the pumping volume, which will make the entire operation process more complicated and reduce reliability. Another method is to control the opening and closing of the water supply valve by the water level indicated by the water level gauge. When the ship sways, the water level indicated by the water level gauge also fluctuates periodically, which will also frequently trigger the water supply valve to open, leading to problems similar to the float control method. Summary of the invention

[0004] In view of the above-mentioned technical defects and application requirements, an embodiment of the present invention provides a ship water tank liquid level control device, which is used to reduce the reduction in the filling height of the centrifugal pump caused by the swaying of the ship, so that the filling height of the centrifugal pump will not be reduced too much, thereby effectively avoiding cavitation of the centrifugal pump.

[0005] In order to solve the above problems, the present invention provides a liquid level control device for a ship water tank, comprising: a water tank, a second guide plate, a first guide plate, a swing adjustment structure and a float limit structure;

[0006] The float limit structure is installed in the water tank to divide the water tank into an upper water tank and a lower water tank; the first guide plate is installed in the upper water tank; the swing adjustment structure includes: a second guide plate, a connecting rod and a heavy ball; the second guide plate is located in the upper water tank, the second guide plate is connected to the first end of the connecting rod, the second end of the connecting rod is connected to the heavy ball, and the second guide plate and the connecting rod are arranged at an angle so that the second guide plate is connected to the first guide plate or is arranged at a distance on one side of the first guide plate through the swing angle of the heavy ball.

[0007] Furthermore, the swing adjustment structure further includes: a gear assembly; the second guide plate is rotatably connected to the first end of the connecting rod through the gear assembly.

[0008] Furthermore, the gear assembly includes: a first gear and a second gear meshingly connected to each other; the first gear is connected to the second guide plate, and the second gear is connected to the first end of the connecting rod.

[0009] Furthermore, the swing adjustment structure also includes: an external shell and a flexible limiter; the flexible limiter includes: a first flexible limiter and a second flexible limiter; the external shell is installed on one side of the water tank, the connecting rod, the weight ball, the first flexible limiter, the second flexible limiter and the gear assembly are all located inside the external shell, the first flexible limiter is installed between the weight ball and the water tank, and the second flexible limiter is installed between the weight ball and the external shell.

[0010] Furthermore, there are two swing adjustment structures, namely a first swing adjustment structure and a second swing adjustment structure; the first swing adjustment structure and the second swing adjustment structure are respectively installed at the left and right ends of the water tank.

[0011] Furthermore, the second guide plate includes: a magnetic segment and a non-magnetic segment; the magnetic segment is connected to the first end of the connecting rod through the non-magnetic segment.

[0012] Furthermore, the ship water tank liquid level control device also includes: a liquid distributor; the liquid distributor is installed in the upper water tank and is located on the top of the first guide plate.

[0013] Furthermore, the float limit structure includes: an orifice plate, a float and a limit cover; each small hole below the orifice plate is correspondingly provided with the limit cover, and each limit cover is provided with the float; the connection part between the limit cover and the orifice plate adopts an arc transition, and a flow channel that gradually shrinks and then expands is formed in the limit cover.

[0014] Furthermore, the upper water storage tank is provided with a water inlet, and the lower water storage tank is provided with a water outlet, and the water outlet is connected to a centrifugal pump.

[0015] Furthermore, the ship water tank liquid level control device also includes: a partition and a limit support plate; the partition is located between the first guide plate and the float limit structure, and the first guide plate is connected to the float limit structure through the partition; the limit support plate is installed between the first guide plate and the partition.

[0016] The liquid level control device for a ship water tank provided by the present invention is provided with a swing adjustment structure and a float ball limiting structure at the same time. When the ship swings and tilts, the float ball limiting structure blocks the small hole on the tilted side under the combined action of buoyancy and additional lift, thereby preventing liquid from flowing out of the small hole on the tilted side of the water tank, and raising the water level on the other side. At the same time, the swing adjustment structure can be controlled by gravity to guide cooling water to flow into the non-tilted side, thereby further raising the water level on the non-tilted side of the water tank, and preventing the problem of lowering the filling height of the centrifugal pump caused by suppressing the swaying of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a ship water tank liquid level control device for stable navigation provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of the liquid level control device for a ship water tank provided by an embodiment of the present invention when tilted to the right;

[0020] Figure 3 for Figure 1 A partial enlarged schematic diagram of the position A in the middle;

[0021] Figure 4 for Figure 1 Cross-sectional view at the middle BB position;

[0022] Explanation of the reference numerals: 1. water inlet; 2. water storage tank; 3. liquid distributor; 4. second gear; 5. first gear; 6. non-magnetic section; 7. magnetic section; 8. external shell; 9. connecting rod; 10. heavy ball; 11. flexible limiter; 12. first guide plate; 13. partition; 14. limit support plate; 15. orifice plate; 16. float; 17. limit cover; 18. water outlet; 19. small hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The embodiment of the present invention provides a liquid level control device for a ship water tank, such as Figure 1 As shown, the ship water tank liquid level control device includes: a water tank 2, a first guide plate 12, a second guide plate, a swing adjustment structure and a float limit structure. The float limit structure is installed in the water tank 2, and the float limit structure divides the water tank 2 into an upper water tank and a lower water tank. The first guide plate 12 is installed in the upper water tank; the swing adjustment structure includes: a second guide plate, a connecting rod 9 and a heavy ball 10; the second guide plate is located in the upper water tank, the second guide plate is connected to the first end of the connecting rod 9, the second end of the connecting rod 9 is connected to the heavy ball 10, and the second guide plate and the connecting rod 9 are set at an angle, so that the second guide plate controls the second guide plate to be connected to the first guide plate 12 or controls the second guide plate to be set at one side of the first guide plate 12 through the swing angle of the heavy ball 10.

[0026] When the second guide plate is connected to the first guide plate 12, the cooling water can be guided to flow into the float stop structure from the other side where the second guide plate is connected to the first guide plate 12. When the second guide plate is spaced apart on one side of the first guide plate 12, the cooling water can flow into the float stop structure normally.

[0027] The upper water storage tank is provided with a water inlet 1, and the lower water storage tank is provided with a water outlet 18, and the water outlet 18 is connected to a centrifugal pump. The centrifugal pump extracts water from the water storage tank 2 and provides it to subsequent equipment.

[0028] In the ship water tank liquid level control device provided in this embodiment, when the ship is sailing steadily, cooling water flows into the water tank 2 from the water inlet 1 and is pumped out from the water outlet 18 through a centrifugal pump. The water inlet amount is consistent with the water outlet amount, and the water level of the water tank 2 remains stable. At this time, the float limit structure is in an open state. The heavy ball 10 controls the rotation angle of the second guide plate under the action of gravity. The second guide plate is attached to the inner wall of the water tank 2, and the second guide plate is arranged at intervals on one side of the first guide plate 12. The cooling water in the upper water tank can directly enter the lower water tank through the float limit structure, and finally be pumped out from the water outlet 18 through a centrifugal pump.

[0029] The liquid level control device for the ship water tank provided in this embodiment is used when the ship is swaying due to waves. Figure 2 As shown, take the ship tilting to the right as an example, and assume that the swing adjustment structure is set on the right side of the water tank 2. When the hull tilts to the right at a certain angle, under the action of gravity, the heavy ball 10 will swing to the right at an angle, and then the heavy ball 10 drives the connecting rod 9 to swing, so that the second guide plate rotates. After rotating to a certain angle, the second guide plate will be connected to the first guide plate 12, forming a right guide channel so that the right cooling water flows into the left space through the right guide channel, so that the cooling water flows into the lower water tank from the left small hole 19 of the floating ball limiting structure. At the same time, after the hull tilts to the right, the water in the water tank tilts to the right, causing the float on the right side of the float limit structure to block the small hole 19 on the right side under the action of buoyancy, and when the hull tilts to the right, water will fill the float limit structure on the right side and tend to flow out of the float limit structure. If water flows out of the float limit structure, the flow rate of water in the float limit structure will increase, thereby reducing the pressure at this position, which provides an additional lift to the float in the float limit structure, making the blocking force of the float limit structure greater and the blocking effect better. Due to the blocking effect of the float limit structure, water cannot flow out of the small hole 19 on the right side of the float limit structure when the hull tilts to the right, thereby effectively suppressing the water level reduction of the water tank 2. In addition, the right diversion channel makes the cooling water converge on the left side, further raising the water level on the left side, achieving the purpose of suppressing the reduction of the effective filling height of the centrifugal pump.

[0030] When the hull is reset, the heavy ball 10 is also reset, driving the second guide plate to reset, the cooling water guide channel formed by the second guide plate and the first guide plate 12 is released, the water level of the water tank 2 is restored to its original state, and the floating ball limit structure is restored to its original state. When the hull tilts to the left, similar to the right tilt, the corresponding structure on the left side is in action.

[0031] The liquid level control device for a ship water tank provided by the embodiment of the present invention is provided with a swing adjustment structure and a float limit structure at the same time. When the ship swings and tilts, the float limit structure blocks the small hole on the tilted side under the combined action of buoyancy and additional lift, preventing liquid from flowing out of the small hole on the tilted side of the water tank, thereby raising the water level on the other side. At the same time, the swing adjustment structure can be controlled by gravity to guide cooling water to flow into the non-tilted side, thereby further raising the water level on the non-tilted side of the water tank, and preventing the problem of lowering the filling height of the centrifugal pump caused by suppressing the swaying of the ship.

[0032] Based on the above embodiments, in a preferred embodiment, Figure 1 As shown, the swing adjustment structure also includes: a gear assembly; the second guide plate is rotatably connected to the first end of the connecting rod 9 through the gear assembly. The gear assembly includes: a first gear 5 and a second gear 4 that are meshed and connected to each other. The first gear 5 is connected to the second guide plate, and the second gear 4 is connected to the first end of the connecting rod 9.

[0033] According to the angle at which the second guide plate and the connecting rod 9 need to rotate, the specifications of the first gear 5 and the second gear 4 can be adjusted accordingly, thereby controlling the rotation angle of the corresponding structure. In this embodiment, the second gear 4 can be a large gear, while the first gear 5 can be a small gear, so that when the connecting rod 9 rotates a certain angle, the rotation angle of the second guide plate will be greater than the rotation angle of the connecting rod 9.

[0034] When the hull tilts, such as tilting to the right, the heavy ball 10 will swing to the right at an angle under the action of gravity, and then drive the connecting rod 9 and the second gear 4 to rotate, and through the transmission ratio set between the large and small gears, drive the first gear 5 in the water tank 2 to rotate, and the first gear 5 drives the second guide plate to swing, so that the second guide plate swings to the inside of the water tank 2 at an angle, thereby guiding the cooling water from the water tank 2 to gather to the left side of the water tank 2, avoiding the cooling water from entering the right side of the water tank 2 and causing too much water to gather above the float limit structure, thereby weakening the blocking effect of the float limit structure. At the same time, the cooling water gathering to the left can also effectively increase the liquid level on the left side, inhibiting the reduction of the effective filling height of the centrifugal pump.

[0035] In this embodiment, the swing adjustment structure also includes: an external casing 8 and a flexible limiter 11. The flexible limiter 11 is used to limit the swing range of the heavy ball 10, including: a first flexible limiter and a second flexible limiter; the external casing 8 is installed on one side of the water tank 2, and the second guide plate, the connecting rod 9, the heavy ball 10, the first flexible limiter, the second flexible limiter and the gear assembly are all located in the external casing 8, that is, except for the second guide plate, all parts of the swing adjustment structure are installed outside the water tank 2, which can prevent the liquid inside the water tank 2 from flowing out to a certain extent. The first flexible limiter is installed between the heavy ball 10 and the water tank 2, and the second flexible limiter is installed between the heavy ball 10 and the external casing 8. When the ship is sailing smoothly, the heavy ball 10 abuts against the first flexible limiter. When the ship shakes, the heavy ball 10 will swing between the first flexible limiter and the second flexible limiter.

[0036] Generally, there are two swing adjustment structures, namely a first swing adjustment structure and a second swing adjustment structure. The first swing adjustment structure and the second swing adjustment structure are installed at the left and right ends of the water storage tank 2 respectively.

[0037] To ensure the connection between the second guide plate and the first guide plate 12, the second guide plate includes: a magnetic section 7 and a non-magnetic section 6; the magnetic section 7 is connected to the first end of the connecting rod 9 through the non-magnetic section 6. The first guide plate 12 is a short stainless steel guide plate, and after rotating a certain angle, the magnetic section 7 can be connected to the first guide plate 12. The length of the magnetic section 7 and the non-magnetic section 6 can be designed according to actual conditions.

[0038] The ship water tank liquid level control device further includes: a liquid distributor 3; the liquid distributor 3 is installed in the upper water tank, and the liquid distributor 3 is located on the top of the first guide plate 12. So that the cooling water entering from the water inlet 1 can fall into the water tank 2 more evenly, avoiding a large amount of cooling water directly rushing in from the water inlet 1, and reducing the impact on related equipment.

[0039] The ship water tank level control device further includes: a partition 13 and a limit support plate 14; the partition 13 is located between the first guide plate 12 and the float limit structure, and is used to divide the upper water tank into left and right sides. The height of the partition 13 can be determined according to specific needs. The first guide plate 12 is connected to the float limit structure through the partition 13. The limit support plate 14 is installed between the first guide plate 12 and the partition 13, and is used to support the first guide plate 12. The connection part between the first guide plate 12 and the partition 13 can be rotated and swung according to different needs.

[0040] like Figure 3As shown, the float limit structure includes: an orifice plate 15, a float 16 and a limit cover 17; each small hole 19 below the orifice plate 15 is correspondingly provided with a limit cover 17, and each limit cover 17 is provided with a float 16, and the diameter of the limit cover 17 is slightly larger than the diameter of the float 16 to prevent the float 16 from getting stuck. The float 16 is made of a lightweight material with a certain flexibility. The flexible material can make the blocking effect of the float 16 better, and the float 16 made of lightweight material can respond to the change of liquid level more quickly. The connection part between the limit cover 17 and the orifice plate 15 adopts an arc transition, and a flow channel that gradually shrinks and then expands is formed in the limit cover 17. Generally, the orifice plate 15 is set above the liquid level when the water storage tank 2 is running smoothly. The orifice plate 15 is provided with a plurality of small holes 19 on the entire cross section, and the corresponding limit cover 17 is also provided with many small holes 19 to facilitate the liquid in the limit cover 17 to enter and exit. The cooling water above it can only flow into the bottom of the orifice plate through the small holes 19 on the orifice plate 15. When the ship is running normally and smoothly, the float 16 floats on the water surface, a certain distance away from the orifice plate 15, and the small holes 19 on the orifice plate 15 are in an open state, which is convenient for the cooling water above it to flow through; when the ship sways and tilts, for example, the hull tilts to the right, causing the water level on the right side to rise, so that the corresponding float 16 on the right side floats up, thereby blocking the corresponding small holes 19 on the right orifice plate 15, so that water cannot flow out of the small holes 19 on the right side, thereby suppressing the sharp drop in the water level of the water storage tank.

[0041] Among them, the limit cover 17 can adopt a cylindrical structure, and the connection part between it and the orifice plate 15 adopts an arc transition, and a space that first gradually shrinks and then gradually expands is formed between it and the float 16. When the ship tilts, the water under the orifice plate 15 will bypass the gap between the float 16 and the limit cover 17 and flow into the small hole 19 of the orifice plate 15. When the water flows through the gradually shrinking space between the float 16 and the limit cover 17, the flow rate increases, resulting in a decrease in pressure there, so that the float 16 receives an additional upward lift, coupled with the buoyancy of the float 16 itself, the two work together to make the float 16 better block the small hole 19 of the orifice plate 15, which can prevent liquid from flowing through to a certain extent.

[0042] like Figure 4 As shown in FIG. 1 , an example of the appearance of a water storage tank is given, but it is not limited to the case of this example. The cross section of the water storage tank 2 can be circular or rectangular. The openings on the liquid distributor 3 can be as follows: Figure 4 The arrangement can also be arranged according to specific circumstances. The opening of the small holes 19 on the orifice plate 15 is similar.

[0043] When the ship is sailing steadily, the ship water tank liquid level control device provided in this embodiment flows cooling water from the water inlet 1 into the water tank 2 and is pumped out from the water outlet 18 by a centrifugal pump. The water inflow is consistent with the water outflow, and the water level of the water tank 2 remains stable. At this time, the float 16 floats on the water surface, with a certain distance from the orifice plate 15, and the small hole 19 on the orifice plate 15 is in an open state. The heavy balls 10 in the external outer shell 8 on both sides of the outside of the water tank 2 are in contact with the flexible limiter 11 on the inside, and the second guide plate connected to the first gear 5 inside the water tank 2 is attached to the inner wall of the water tank 2. The non-magnetic section 6 of the second guide plate is connected to the first gear 5, and the magnetic section 7 is located at the other end of the second guide plate. After the cooling water flows into the water tank 2 from the water inlet 1, it is evenly distributed to the space below through the liquid distributor 3 above the water tank 2, and then flows into the limit cover 17 through the small holes 19 on the orifice plate 15, and then communicates with the external water through the small holes 19 on the limit cover 17, and finally is pumped out from the water outlet 18 by a centrifugal pump.

[0044] The liquid level control device for the ship water tank provided in this embodiment is used when the ship is swaying due to waves. Figure 2 As shown, take the ship tilting to the right as an example. When the hull tilts to the right by a certain angle θ1, under the action of gravity, the heavy ball 10 will swing to the right by an angle θ2, and then the heavy ball 10 drives the connecting rod 9 to swing by an angle θ2. The connecting rod 9 is connected to the second gear 4, so the second gear 4 will also rotate by an angle θ2. The second gear 4 and the first gear 5 are driven by gears. By setting a reasonable gear transmission ratio, the first gear 5 can rotate by an angle θ3, so that the second guide plate connected to the first gear 5 rotates, and the magnetic segment 7 of the second guide plate will attract the first guide plate 12 on the right side of the partition 13. Finally, the magnetic segment 7 and the first guide plate 12 on the right side are attached by magnetic adsorption to form a right guide channel, so that the right cooling water distributed by the liquid distributor 3 flows into the left space of the middle partition 13 through the right guide channel, so that the cooling water flows from the left small hole 19 of the orifice plate 15 into the water below. At the same time, after the hull tilts to the right, the water in the water tank 2 tilts to the right, causing the right float 16 to float up under the action of buoyancy, thereby blocking the small hole 19 corresponding to the right side of the orifice plate 15. Moreover, when the hull tilts to the right, the water will fill the right limit cover 17 and tend to flow out from the gradually contracting and expanding channel between the float 16 and the limit cover 17. If water flows out from the gradually contracting and expanding channel, the flow rate of the water in the gradually contracting channel will increase, thereby reducing the pressure at this position, which provides an additional lift to the float 16, making the float 16 have a greater blocking force on the small hole 19 and a better blocking effect. Due to the blocking effect of the float 16, when the hull tilts to the right, water cannot flow out from the small hole 19 on the right side of the orifice plate 15, thereby effectively suppressing the water level reduction of the water tank. In addition, the water inlet 1 converges the cooling water on the left side of the partition 13 through the right diversion channel, further raising the water level on the left side, thereby achieving the purpose of suppressing the reduction of the effective filling height of the centrifugal pump.

[0045] When the hull is reset, the heavy ball 10 is also reset, driving the second guide plate to reset, the cooling water guide channel formed by the second guide plate and the first guide plate 12 is released, the water level of the water tank 2 is restored to its original state, and the right float 16 falls, so that the right hole 19 of the orifice plate 15 is reopened, and the device is restored to its original state. When the hull tilts to the left, it is similar to the right tilt, and the corresponding structure on the left side is in action.

[0046] In summary, the liquid level control device for a ship water tank provided by the embodiment of the present invention, by simultaneously providing a swing adjustment structure and a float limit structure, when the ship swings and tilts, the float limit structure blocks the small hole on the tilted side under the combined action of buoyancy and additional lift, preventing liquid from flowing out of the small hole on the tilted side of the water tank, and raising the water level on the other side. At the same time, the swing adjustment structure can be controlled by gravity to guide the cooling water to flow into the non-tilted side, thereby further raising the water level on the non-tilted side of the water tank, and preventing the problem of a reduction in the filling height of the centrifugal pump caused by suppressing the swaying of the ship.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the invention rather than to limit it. Although the invention 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 invention.

Claims

1. A ship water tank liquid level control device, characterized in that: include: Liquid distributor, water storage tank, first guide plate, second guide plate, swing adjustment structure and float limit structure; The float limiting structure is installed in the water tank to separate the water tank into an upper water tank and a lower water tank; The first guide plate is installed in the upper water storage tank; The swing adjustment structure includes: a second guide plate, a connecting rod and a weight ball; the second guide plate is located in the upper water tank, the second guide plate is connected to the first end of the connecting rod, the second end of the connecting rod is connected to the weight ball, the second guide plate and the connecting rod are arranged at an angle so that the second guide plate is connected to the first guide plate or is arranged at intervals on one side of the first guide plate through the swing angle of the weight ball; the second guide plate includes: a magnetic section and a non-magnetic section; the magnetic section is connected to the first end of the connecting rod through the non-magnetic section; the liquid distributor is installed in the upper water tank and is located on the top of the first guide plate.

2. The ship water tank liquid level control device according to claim 1, characterized in that: The swing adjustment structure further includes: a gear assembly; the second guide plate is rotatably connected to the first end of the connecting rod through the gear assembly.

3. The ship water tank liquid level control device according to claim 2, characterized in that: The gear assembly includes: a first gear and a second gear meshingly connected to each other; the first gear is connected to the second guide plate, and the second gear is connected to the first end of the connecting rod.

4. The ship water tank liquid level control device according to claim 2, characterized in that: The swing adjustment structure also includes: an external shell and a flexible limiter; the flexible limiter includes: a first flexible limiter and a second flexible limiter; the external shell is installed on one side of the water tank, the connecting rod, the weight ball, the first flexible limiter, the second flexible limiter and the gear assembly are all located inside the external shell, the first flexible limiter is installed between the weight ball and the water tank, and the second flexible limiter is installed between the weight ball and the external shell.

5. The ship water tank liquid level control device according to any one of claims 1 to 4, characterized in that: There are two swing adjustment structures, namely a first swing adjustment structure and a second swing adjustment structure; the first swing adjustment structure and the second swing adjustment structure are respectively installed at the left and right ends of the water tank.

6. The ship water tank liquid level control device according to any one of claims 1 to 4, characterized in that: The float limiting structure comprises: an orifice plate, a float and a limiting cover; each small hole below the orifice plate is provided with a corresponding limiting cover, and each limiting cover is provided with the float; the connection between the limiting cover and the orifice plate adopts an arc transition, and a flow channel that gradually contracts and then expands is formed in the limiting cover.

7. The ship water tank liquid level control device according to any one of claims 1 to 4, characterized in that: The upper water storage tank is provided with a water inlet, and the lower water storage tank is provided with a water outlet, and the water outlet is connected to a centrifugal pump.

8. The ship water tank liquid level control device according to any one of claims 1 to 4, characterized in that: The ship water tank liquid level control device also includes: a partition and a limit support plate; the partition is located between the first guide plate and the float limit structure, and the first guide plate is connected to the float limit structure through the partition; the limit support plate is installed between the first guide plate and the partition.

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