Self-circulating seawater cooling system

Abstract

Self-circulating seawater cooling system, which relates to the field of seawater cooling and heat dissipation. It solves the problem that the seawater cooling system can only dissipate heat from external equipment and cannot dissipate heat by itself. The present invention includes self-circulation of cooling water and self-circulation of lubricating oil. The output shaft of the driving motor in the system is connected to the rotating shaft of the variable pump through a coupling; after the variable pump pressurizes the lubricating oil output by the lubricating system, it pumps it into the oil inlet of the hydraulic motor to drive the hydraulic motor to work, so that the hydraulic motor drives the seawater pump to work. The cooling water in the water tank is output to the peripheral equipment through the seawater pump. All the heat generated by the system can be used by the cooler to cool the self-circulation of cooling water and the self-circulation of lubricating oil, and it can achieve constant oil temperature and constant water temperature. The present invention is mainly applied to offshore ships.

Description

Technical Field

[0001] The present invention relates to the field of seawater cooling and heat dissipation. Background Art

[0002] The seawater cooling system is mainly used to cool the external equipment on sea ships. The circulating water on the ship is taken from the sea, and there is no problem of excessive seawater temperature. When the seawater cooling system works, the motor in the system drives the variable pump to work. The variable pump outputs high-pressure oil to the hydraulic motor, driving the hydraulic motor to drive the seawater pump to pump water, and using the pumped water to cool the external equipment of the seawater cooling system. Among them, the provider of the high-pressure oil is the lubrication system in the seawater cooling system. The high-pressure oil output by the lubrication system is supplied to the motor in the seawater cooling system. The high-pressure oil has two functions. One is to provide high-pressure oil for the motor to drive the motor; the other is after driving the motor, the motor is cooled by the oil drained from the motor. And after the oil drained from the motor returns to the lubrication system, it causes the temperature of the lubrication system to rise, and the heat of the lubricating oil in the lubrication system cannot be effectively dissipated, resulting in the seawater cooling system being unable to effectively dissipate the heat of the lubrication system therein. That is, there is a problem that the existing seawater cooling system can only dissipate the heat of the external equipment on the ship and cannot perform self-cooling. Therefore, the above problems need to be solved urgently. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem that the seawater cooling system can only dissipate the heat of the external equipment and cannot perform self-cooling. The present invention provides a self-circulating seawater cooling system.

[0004] The self-circulating seawater cooling system includes a driving motor, a lubrication system, a coupling, a variable pump, a hydraulic motor, a seawater pump, a water tank and a cooler;

[0005] The output shaft of the driving motor is connected to the rotating shaft of the variable pump through a coupling; after the variable pump pressurizes the lubricating oil output by the lubrication system, it pumps it into the oil inlet of the hydraulic motor to drive the hydraulic motor to work, so that the hydraulic motor drives the seawater pump to work, and the cooling water in the water tank is output to the external equipment through the seawater pump to cool the external equipment; the cooling water is seawater; the water tank is also provided with a water inlet for introducing seawater;

[0006] The oil inlet of the variable pump is communicated with the oil outlet of the lubrication system, the oil outlet of the variable pump is communicated with the oil inlet of the hydraulic motor, the oil return port of the hydraulic motor is communicated with the oil return inlet of the variable pump, the oil return outlet of the variable pump is communicated with the oil return inlet of the lubrication system, and the oil drain port of the hydraulic motor is communicated with the oil drain inlet of the lubrication system to realize the self-circulation of the lubricating oil;

[0007] The cooling water output from the water tank enters the cooler after cooling the lubrication system. After the cooler cools the seawater output from the lubrication system, the obtained cooling water returns to the water tank. Meanwhile, the water tank is also connected to the cooler to realize the self-circulation of the cooling water.

[0008] Preferably, a throttle valve is provided on the pipeline between the oil outlet of the variable pump and the oil inlet of the hydraulic motor to control the oil pressure of the lubricating oil input into the hydraulic motor through the throttle valve.

[0009] Preferably, a relief valve is provided on the pipeline between the oil inlet of the variable pump and the oil outlet of the lubrication system to control the oil pressure of the lubricating oil entering the variable pump through the relief valve.

[0010] Preferably, the lubrication system includes a housing, a plate heat exchanger, and an oil tank;

[0011] Both the plate heat exchanger and the oil tank are arranged inside the housing, and the plate heat exchanger is used for heat exchange with the oil tank;

[0012] After the cooling water introduced into the lubrication system cools the plate heat exchanger, at this time, after the cooling water is heated and takes away the heat on the plate heat exchanger, it is output to the cooler.

[0013] Preferably, a torsion meter is provided between the driving motor and the coupling to realize the torque measurement of the cooling system.

[0014] The beneficial effects brought by the present invention are:

[0015] The self-circulating seawater cooling system described in the present invention has the functions of self-circulation of cooling water and self-circulation of lubricating oil. When cooling the lubrication system, no external medium is required to intervene, the structure is compact, and the control is convenient. The self-circulating seawater cooling system described in the present invention is driven by a motor, and the seawater pump provides a load for the system by pumping and discharging water. All the heat generated by the system can be cooled by the cooler, and the oil temperature and water temperature can be kept constant. Among them, the setting method of connecting the water tank to the cooler ensures the constant water temperature in the cooler and the water tank. And the cooler adopted in the self-circulating seawater cooling system has a small volume, further reducing the volume and cost of the system. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the principle of the self-circulating seawater cooling system described in the present invention. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0019] Embodiment 1:

[0020] Refer to Figure 1 To describe Embodiment 1 of the present invention, the self-circulating seawater cooling system described in this Embodiment 1 includes a driving motor 1, a lubrication system 2, a coupling 3, a variable pump 4, a hydraulic motor 5, a seawater pump 6, a water tank 7, and a cooler 8; during application, the driving motor 1 and the variable pump 4 are set at the same height through an equipment bracket; the output shaft of the driving motor 1 is connected to the rotating shaft of the variable pump 4 through the coupling 3; after the variable pump 4 pressurizes the lubricating oil output by the lubrication system 2, it pumps the lubricating oil into the oil inlet of the hydraulic motor 5 to drive the hydraulic motor 5 to work, so that the hydraulic motor 5 drives the seawater pump 6 to work, and the cooling water in the water tank 7 is output to the external device through the seawater pump 6 to cool the external device; the cooling water is seawater; the water tank 7 is also provided with a water inlet for introducing seawater; the oil inlet of the variable pump 4 is communicated with the oil outlet of the lubrication system 2, the oil outlet of the variable pump 4 is communicated with the oil inlet of the hydraulic motor 5, the oil return port of the hydraulic motor 5 is communicated with the oil return inlet of the variable pump 4, the oil return outlet of the variable pump 4 is communicated with the oil return inlet of the lubrication system 2, and the oil drain port of the hydraulic motor 5 is communicated with the oil drain inlet of the lubrication system 2 to realize the self-circulation of the lubricating oil; specifically, the oil outlet of the variable pump 4 and the oil inlet of the hydraulic motor 5 are communicated through a high-pressure hose; the cooling water output from the water tank 7 cools the lubrication system 2 and then enters the cooler 8, and after the cooler 8 cools the seawater output by the lubrication system 2, the obtained cooling water returns to the water tank 7; at the same time, the water tank 7 is also communicated with the cooler 8 to realize the self-circulation of the cooling water.

[0021] The self-circulating seawater cooling system described in this embodiment includes two sets of self-circulations, namely the self-circulation of the lubricating oil and the self-circulation of the cooling water. Since the liquid cooled by the cooler 8 cannot meet the cooling requirements, the water temperature in the water tank 7 will gradually increase after such long-term operation. In order to avoid the defect of the increase in the temperature in the water tank 7, a connection mode between the water tank 7 and the cooler 8 is added, which ensures the constant water temperature in the cooler 8 and the water tank 7. And the connection mode between the water tank 7 and the cooler 8 can further reduce the volume of the cooler 8 used. During application, a cooler 8 with a smaller volume can be used to realize the self-circulation of the cooling water. The circulating cooling water is taken from the sea, and there is no problem of too high seawater temperature. The lubrication system 2 is cooled by the cooling water in the water tank 7 to avoid explosion due to too high temperature of the lubricating oil in the lubrication system 2, realizing the self-cooling of the self-circulating seawater cooling system.

[0022] In order to control the oil pressure of the lubricating oil input into the hydraulic motor 5, a throttle valve is provided on the pipeline between the oil outlet of the variable pump 4 and the oil inlet of the hydraulic motor 5, and the oil pressure of the lubricating oil input into the hydraulic motor 5 is controlled through the throttle valve.

[0023] In order to control the oil pressure of the lubricating oil entering the variable pump 4, a relief valve is provided on the pipeline between the oil inlet of the variable pump 4 and the oil outlet of the lubrication system 2, and the oil pressure of the lubricating oil entering the variable pump 4 is controlled through the relief valve.

[0024] The lubrication system 2 includes a housing, a plate heat exchanger and an oil tank; the plate heat exchanger and the oil tank are both arranged in the housing, and the plate heat exchanger is used for heat exchange with the oil tank; after the cooling water introduced into the lubrication system 2 cools the plate heat exchanger, at this time, after the cooling water is heated and takes away the heat on the plate heat exchanger, it is output to the cooler 8.

[0025] The plate heat exchanger only has the function of heat exchange and does not have the function of refrigeration. Therefore, after the return oil and the drain oil enter the oil tank in the lubrication system 2, the oil temperature in the oil tank rises. After heat exchange through the plate heat exchanger, the temperature of the plate heat exchanger gradually rises. Over time, the temperatures of the plate heat exchanger and the oil tank in the lubrication system 2 continue to rise and cannot dissipate heat. Therefore, after the cooling water introduced into the lubrication system 2 cools the plate heat exchanger, at this time, after the cooling water is heated and takes away the heat on the plate heat exchanger, it is output to the cooler 8 to achieve the cooling of the lubrication system 2.

[0026] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not depart from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. Self-circulating seawater cooling system, characterized in that, It has the functions of self-circulation of cooling water and self-circulation of lubricating oil; The system includes a driving motor (1), a lubrication system (2), a coupling (3), a variable pump (4), a hydraulic motor (5), a seawater pump (6), a water tank (7) and a cooler (8); When cooling the lubrication system (2), no external medium is required to intervene. The system is driven by the driving motor (1). The seawater pump (6) provides load for the system by pumping and draining water. The heat generated by the system can be completely cooled by the cooler (8), and the constant oil temperature and constant water temperature can be achieved; The output shaft of the driving motor (1) is connected to the rotating shaft of the variable pump (4) through the coupling (3); After the variable pump (4) pressurizes the lubricating oil output by the lubrication system (2), it pumps it into the oil inlet of the hydraulic motor (5) to drive the hydraulic motor (5) to work, so that the hydraulic motor (5) drives the seawater pump (6) to work. The cooling water in the water tank (7) is output to the peripheral equipment through the seawater pump (6) to cool the peripheral equipment; The cooling water is seawater; The water tank (7) is also provided with a water inlet for introducing seawater; The oil inlet of the variable pump (4) is communicated with the oil outlet of the lubrication system (2), the oil outlet of the variable pump (4) is communicated with the oil inlet of the hydraulic motor (5), the oil return port of the hydraulic motor (5) is communicated with the oil return inlet of the variable pump (4), the oil return outlet of the variable pump (4) is communicated with the oil return inlet of the lubrication system (2), and the oil drain port of the hydraulic motor (5) is communicated with the oil drain inlet of the lubrication system (2) to realize the self-circulation of lubricating oil; The cooling water output from the water tank (7) cools the lubrication system (2) and then enters the cooler (8). After the cooler (8) cools the seawater output by the lubrication system (2), the obtained cooling water returns to the water tank (7); At the same time, the water tank (7) is also communicated with the cooler (8) to realize the self-circulation of cooling water.

2. The self-circulating seawater cooling system according to claim 1, wherein A throttle valve is provided on the pipeline between the oil outlet of the variable pump (4) and the oil inlet of the hydraulic motor (5) to control the oil pressure of the lubricating oil input into the hydraulic motor (5).

3. The self-circulating seawater cooling system according to claim 1, wherein An overflow valve is provided on the pipeline between the oil inlet of the variable pump (4) and the oil outlet of the lubrication system (2) to control the oil pressure of the lubricating oil entering the variable pump (4).

4. The self-circulating seawater cooling system according to claim 1, wherein The lubrication system (2) includes a housing, a plate heat exchanger and an oil tank; The plate heat exchanger and the oil tank are both arranged in the housing, and the plate heat exchanger is used for heat exchange with the oil tank; After the cooling water introduced into the lubrication system (2) cools the plate heat exchanger, at this time, the cooling water warms up and takes away the heat on the plate heat exchanger, and then outputs to the cooler (8).

5. The self-circulating seawater cooling system according to claim 1, wherein A torsion meter is provided between the driving motor (1) and the coupling (3) to realize the torque measurement of the cooling system.

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