Marine negative pressure type seawater tank degassing device

Abstract

The utility model relates to a marine negative pressure type seawater tank degassing device which comprises a seawater tank, the top of the seawater tank is connected with a plurality of air suction branch pipes, the plurality of air suction branch pipes are converged into an air suction pipe, and the air suction pipe is obliquely and forwards communicated with the side wall of a seawater chord discharge pipe; the seawater chord external discharge pipeline is powered by a seawater power device; and the pipe diameter of the air suction pipe is smaller than that of the seawater chord discharge pipe. Air bubbles entering the seawater tank are sucked and discharged to the outboard through micro negative pressure drainage of the air branch pipeline, the air bubbles are prevented from entering a water system, the design is very ingenious, the pipeline system is slightly changed, and popularization and application are very convenient.

Description

Technical Field

[0001] The utility model relates to a marine negative pressure seawater tank degassing device, belonging to the technical field of ship design. Background Art

[0002] Air bubbles will inevitably enter and accumulate in the ship's seawater tank, such as Figure 1 As shown, the existing design only sets a breathable pipe on the top of the seawater tank and uses a natural way to remove air bubbles through the breathable pipe. The air bubble removal effect is not ideal. A large number of air bubbles still enter the water system with the water flow, thereby affecting the reliability and effectiveness of the operation of equipment such as pumps in the system. Utility Model Content

[0003] The purpose of the utility model is to provide a marine negative pressure seawater tank degassing device. Through a special design, the ejector principle of the outboard drainage pipeline of the original seawater cooling system is utilized. By arranging a connecting branch pipe between the drainage pipeline and the seawater tank, a certain micro-negative pressure is generated on the top of the seawater tank, so that the air bubbles accumulated on the top of the seawater tank are discharged, and the negative pressure is used to promote the early precipitation of air bubbles in the seawater flow, which can effectively prevent air bubbles from entering the water system with the seawater flow, optimize the use of the system, and extend the life of the equipment.

[0004] The utility model adopts the following technical solutions:

[0005] A marine negative pressure seawater tank degassing device comprises a seawater tank 1, wherein a plurality of air intake branches 2 are connected to the top of the seawater tank 1, and the plurality of air intake branches 2 are combined into an air intake pipe 5, wherein the air intake pipe 5 is connected to the side wall of a seawater chord discharge pipe 6 at an angle forward; the seawater chord discharge pipe is powered by a seawater power device; and the diameter of the air intake pipe 5 is smaller than that of the seawater chord discharge pipe 6.

[0006] In this technical solution, the setting of the air suction tube 5 actually provides a structure similar to an ejector, which provides a micro-negative pressure and uses the micro-negative pressure method to remove air bubbles, thereby greatly accelerating the speed of bubble removal compared to the existing bubble removal method.

[0007] Preferably, the seawater power device is a seawater pump 4, which pumps seawater to the equipment on board that needs cooling, and then discharges it to the chord side through the seawater chord discharge pipe 6. This technical solution utilizes the existing seawater discharge pipeline and seawater pump without excessive system modification. The air intake branch pipe 2 and air intake pipe 5 are simply cleverly arranged at appropriate locations to generate an ejector effect, thereby establishing a slight negative pressure, thereby accelerating the removal of bubbles from the seawater tank.

[0008] Furthermore, the front end of the seawater pump 4 is also provided with a branch pipeline 7 leading to other water-using equipment.

[0009] Preferably, a natural air vent 3 passing through the top of the main deck is further provided on the top of the seawater tank 1 .

[0010] Furthermore, the diameter of the seawater discharge pipe 6 is reduced to be smaller than the pipes connected to the two ends of the seawater pump 4. This technical solution changes the diameter of the existing seawater discharge pipe (appropriately reduces it), thereby increasing the seawater discharge flow rate and enhancing the jet effect.

[0011] Preferably, the seawater discharge pipe 6 is provided with a shut-off valve and a solenoid valve at a position before the connection with the air intake pipe 5, and the opening and closing of the seawater discharge pipe 6 can be controlled by manual and electromagnetic remote control, thereby determining whether to start the function of accelerating the removal of bubbles in the seawater tank.

[0012] The beneficial effects of the present invention are:

[0013] 1) Through the micro-negative pressure drainage of the air branch pipe, the air bubbles entering the seawater tank are sucked in and discharged overboard, preventing the air bubbles from entering the water system. The design is very clever, and the changes to the original piping system are very small, making it very convenient for promotion and application;

[0014] 2) Improve the working condition of water system equipment;

[0015] 3) Reduce the risk of cavitation of water pumps and increase their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a design drawing of an existing traditional seawater tank ventilation pipeline.

[0017] Figure 2 The utility model is a structural schematic diagram of a negative pressure seawater tank degassing device for a ship.

[0018] In the figure, 1. seawater tank, 2. air intake branch pipe, 3. natural ventilation pipe, 4. seawater pump, 5. air intake pipe, 6. seawater discharge pipe, 7. branch pipes leading to other water-using equipment. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] See attached Figure 1First, the main disadvantage of the existing technology is that it cannot effectively and timely remove air bubbles that enter the seawater tank. Eventually, the air bubbles gather and grow larger, and then enter the water system with the seawater flow, thereby affecting the effectiveness of the water system and the reliability of the equipment. The purpose of this utility model is to effectively remove air bubbles from the incoming seawater in the seawater tank, so that the number of air bubbles entering the water system is as small as possible, thereby improving the effectiveness of the water system and the reliability of the equipment, and extending the service life of the equipment. The specific solution is described as follows:

[0021] See also Figure 2 A marine negative pressure seawater tank degassing device comprises a seawater tank 1, wherein a plurality of air intake branches 2 are connected to the top of the seawater tank 1, and the plurality of air intake branches 2 are merged into an air intake pipe 5, and the air intake pipe 5 is connected to the side wall of a seawater chord discharge pipe 6 at an angle forward; the seawater chord discharge pipe is powered by a seawater power device; the diameter of the air intake pipe 5 is smaller than that of the seawater chord discharge pipe 6.

[0022] The setting of the air suction pipe 5 actually provides a structure similar to an ejector, which provides a micro-negative pressure and uses the micro-negative pressure method to remove air bubbles, thereby greatly accelerating the speed of removing bubbles compared to existing bubble removal methods.

[0023] In this embodiment, see Figure 2 The seawater power device is a seawater pump 4, which pumps seawater to the equipment on board that needs cooling, and then discharges it to the chord side through the seawater chord discharge pipe 6. This solution utilizes the existing seawater discharge pipeline and seawater pump, without excessive system modification. The seawater pump 4 and other pipelines are all existing equipment, but the air intake branch pipe 2 and air intake pipe 5 are cleverly installed in appropriate locations to generate an ejector effect, thereby establishing a slight negative pressure, thereby accelerating the removal of bubbles from the seawater tank.

[0024] In this embodiment, the front end of the seawater pump 4 is further provided with a branch pipeline 7 leading to other water-using equipment.

[0025] In another embodiment, a natural ventilation pipe 3 passing through the top of the main deck is further provided on the top of the seawater tank 1.

[0026] In this embodiment, the diameter of the seawater discharge pipe 6 is reduced to be smaller than the pipes connected to the two ends of the seawater pump 4. This solution changes the diameter of the existing seawater discharge pipe (appropriately reduces it), thereby increasing the seawater discharge flow rate and enhancing the jet effect.

[0027] In this embodiment, a stop valve and a solenoid valve are provided at the position of the seawater discharge pipe 6 before the connection with the air intake pipe 5. The opening and closing of the seawater discharge pipe 6 can be controlled by manual and electromagnetic remote control, thereby determining whether to start the function of accelerating the removal of bubbles in the seawater tank.

[0028] The utility model adopts the ejector principle, arranges an air intake branch pipe on the outboard discharge pipe of the seawater cooling system, connects to the top of the seawater tank, utilizes the jet suction force generated by the high-speed water flow in the discharge pipe, sucks the precipitated air on the top of the seawater tank through the air branch pipe, and generates a certain micro-negative pressure on the top of the seawater tank, further promoting the precipitation of air bubbles in the seawater, thereby reducing the air bubbles in the seawater flow.

[0029] The detailed design and layout based on this principle: By reducing the diameter of the seawater system's overboard discharge pipe outlet section, the velocity of the discharged water is increased, the jet effect is enhanced, and the suction force in the air branch pipe is increased. An air branch pipe is installed on the discharge pipe and connected to the top of the seawater tank. Multiple small branch pipes are arranged according to the area and structure of the seawater tank roof. These suck in air bubbles that accumulate at the top, creating a certain micro-negative pressure on the seawater surface inside the seawater tank, promoting the further precipitation of air bubbles in the seawater. The precipitated air bubbles are eventually discharged overboard along with the seawater in the seawater overboard discharge pipe.

[0030] In summary, the utility model uses the micro-negative pressure drainage of the air branch line to suck in the air bubbles entering the seawater tank and discharge them overboard, thereby preventing the air bubbles from entering the water system. The design is very clever, and the changes to the original piping system are very small, which is very convenient for promotion and application; it improves the working condition of the water system equipment; reduces the cavitation risk of the water pump and increases the service life.

[0031] The above are preferred embodiments of the present invention. Ordinary technicians in this field can also make various changes or improvements on this basis. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. A marine negative pressure seawater tank degassing device, comprising a seawater tank (1), characterized in that: The top of the seawater tank (1) is connected to a plurality of air intake branches (2), and the plurality of air intake branches (2) are combined into an air intake pipe (5), and the air intake pipe (5) is connected to the side wall of the seawater chord discharge pipe (6) at an angle forward; The seawater discharge pipeline is powered by a seawater power device; The diameter of the air intake pipe (5) is smaller than the seawater discharge pipe (6).

2. The marine negative pressure seawater tank degassing device according to claim 1, characterized in that: The seawater power device is a seawater pump (4), which pumps seawater to the equipment on board that needs to be cooled, and then discharges the seawater to the chord side through the seawater chord discharge pipe (6).

3. The marine negative pressure seawater tank degassing device according to claim 2, characterized in that: The front end of the seawater pump (4) is also provided with a branch pipeline (7) leading to other water-using equipment.

4. The marine negative pressure seawater tank degassing device according to claim 1, characterized in that: The top of the seawater tank (1) is also provided with a natural ventilation pipe (3) passing through the top of the main deck.

5. The marine negative pressure seawater tank degassing device according to claim 2, characterized in that: The diameter of the seawater discharge pipe (6) is reduced to be smaller than the pipes connected to both ends of the seawater pump (4).

6. The marine negative pressure seawater tank degassing device according to claim 1, characterized in that: The seawater discharge pipe (6) is provided with a stop valve and a solenoid valve at a position before the connection with the air intake pipe (5).

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