Cooling water circulation system

Abstract

The present invention provides a cooling water circulation system, comprising: a transition pool for storing cooling water; the variable frequency pump set is connected with the transition water pool through a pipeline and used for sucking the cooling water in the transition water pool and conveying the cooling water to ship equipment for a bullet train test; the water storage tank is connected with the broadside water outlet through a pipeline and is used for collecting used cooling water; the lifting pump set is connected with the water storage tank through a pipeline and is used for sucking water in the water storage tank; the cooling tower set is connected with the lifting pump set through a pipeline, the lifting pump set conveys water in the water storage pond to the cooling tower set and cools the water in the cooling tower set, and the cooled cooling water flows into the transition water pond; the control unit is used for dynamically controlling the variable frequency pump set, the lifting pump set and the cooling tower set to work. The system circularly provides cooling water required by the ship bullet train test, and after the system is used, cleaning and maintenance are not needed after the bullet train test is finished.

Description

Technical Field

[0001] The invention relates to the field of ship and motor vehicle testing, and in particular to a cooling water circulation system. Background Art

[0002] During the shipbuilding process, it is necessary to test run the generator, main engine, air conditioner and other equipment. Since it is impossible to provide a continuous supply of relatively low-temperature cooling water on the slipway, it is currently necessary to wait until the ship is launched before the motor vehicle and air cooling system can be tested. In the traditional way, river water is used as cooling water, and the cooling water is directly sent to the cooling water inlet of the generator by destroying the integrity of the hull deck, so that the motor vehicle can be tested in a very short time. However, this method is costly and the subsequent cleaning and maintenance work is cumbersome. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the related art, an object of the present invention is to provide a cooling water circulation system.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a cooling water circulation system, including: a transition water tank for storing cooling water; a variable frequency pump group connected to the transition water tank through a pipeline, used to pump the cooling water in the transition water tank and transport the cooling water to ship equipment for motor vehicle testing; a water storage tank, connected to the side drain through a pipeline, used to collect used cooling water; a lifting pump group connected to the water storage tank through a pipeline, used to pump the water in the water storage tank; a cooling tower group, connected to the lifting pump group through a pipeline, the lifting pump group transports the water in the water storage tank to the cooling tower group and cools it in the cooling tower group, and the cooled cooling water flows into the transition water tank; a control unit, used to dynamically control the operation of the variable frequency pump group, the lifting pump group and the cooling tower group.

[0005] Optionally, the transition water pool is provided with a water inlet device and a water outlet device, the water inlet device is used to store water in the transition water pool to provide cooling water, and the water outlet device is used to drain water.

[0006] Optionally, the water inlet device includes a water inlet pipe and a water inlet valve connected in series to the water inlet pipe, the water inlet pipe is used to replenish water into the transition water pool, and the water inlet valve is used to control the on-off of the water inlet pipe.

[0007] Optionally, the water inlet device also includes a temperature sensor and a liquid level sensor, and the temperature sensor and the liquid level sensor are arranged in the transition water tank. The temperature sensor is used to monitor the water temperature. When the water temperature is too high, the control unit controls the water inlet valve to open to replenish water to the transition water tank. The liquid level sensor is used to monitor the liquid level. When the liquid level is too low, the control unit controls the water inlet valve to open to replenish water to the transition water tank.

[0008] Optionally, the variable frequency pump group includes multiple variable frequency pumps, each variable frequency pump is connected to an inlet pipeline and an outlet pipeline, each inlet pipeline and outlet pipeline is connected in series with a control valve and a flow meter, each inlet pipeline is connected to a transition water tank, and each outlet pipeline is used to provide cooling water to ship equipment, and the variable frequency pump is used to transport the cooling water in the transition water tank to the ship equipment.

[0009] Optionally, a one-way valve is also connected in series on the water outlet pipeline of each variable frequency pump.

[0010] Optionally, a filter is connected in series on the pipeline between the lift pump group and the transition water tank.

[0011] Optionally, the cooling water circulation system further includes a fan coil unit, and each of the variable frequency pumps has a fan coil unit connected in parallel on its outlet pipe. The pipe between the fan coil unit and the corresponding variable frequency pump outlet pipe is turned on and off by setting a control valve.

[0012] Optionally, the lift pump group includes multiple lift pumps, each of which is connected to a water inlet pipeline and a water outlet pipeline, the water inlet pipeline of the lift pump is connected to the water storage tank, the water outlet pipeline of each lift pump is connected to the cooling tower group, and a control valve is connected in series on the water outlet pipeline of each lift pump.

[0013] Optionally, an overflow port is provided on the water storage tank.

[0014] As described above, the cooling water circulation system of the present invention has the following beneficial effects: the cooling water circulation system can provide recyclable cooling water for the ship platform motor vehicle. Due to the recyclable use, the total amount of cooling water required for a motor vehicle test is greatly reduced, thereby improving the economy of using recycled water for cooling; the system uses fresh water instead of river water, thereby reducing the workload of subsequent cleaning and maintenance of equipment; it can provide cooling water of different pressures and flows for different ship types, different equipment, different sea conditions and different seabed gate pressure conditions, while also ensuring the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of a cooling water circulation system in an embodiment of the present invention.

[0016] Figure 2 It shows a schematic diagram of a cooling tower group and a transition water tank in an embodiment of the present invention.

[0017] Figure 3 Shown is a schematic diagram of a variable frequency pump group in an embodiment of the present invention.

[0018] Figure 4 Shown is a schematic diagram of a fan coil unit according to an embodiment of the present invention.

[0019] Figure 5 Shown is a schematic diagram of a lift pump assembly in an embodiment of the present invention.

[0020] Component number description

[0021] 1. Transition water tank; 2. Water storage tank; 21. Overflow port; 3. Control valve; 4. Water inlet pipe; 5. Water inlet valve; 6. Normally open valve; 7. Temperature sensor; 8. Liquid level sensor; 9. Frequency conversion pump; 10. Check valve; 11. Main water inlet line; 12. Filter; 13. Fan coil unit; 14. Lifting pump; 15. Pressure sensor; 16. Cooling tower; 17. Flow meter; 18. Water outlet device. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic view is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0024] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0025] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0026] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] like Figure 1 As shown, this embodiment provides a cooling water circulation system, which is used to provide circulating fresh water for the ship when the ship is moving.

[0028] The cooling water circulation system includes a transition water tank 1, a variable frequency pump group, a water storage tank 2, a lifting pump group, a cooling tower group, a water supply and return pipeline and a control unit.

[0029] A water outlet pipeline is arranged at the bottom of the transition water tank 1, and a control valve 3 is arranged on the water outlet pipeline. Here, the control valve 3 adopts an electromagnetic valve. When the control valve 3 is opened, the cooling water in the transition water tank 1 is discharged from the transition water tank 1, and the cooling water discharged from the transition water tank 1 will enter the variable frequency pump group.

[0030] The variable frequency pump group divides the cooling water into multiple water paths, which are respectively supplied to different seawater pump suction ports on the ship, so as to provide cooling water for the generators, main engines and other equipment on the ship.

[0031] The water supply and return pipeline is used to connect the side drain port and the water storage tank 2, and the cooling water after use returns to the water storage tank 2 through the water supply and return pipeline.

[0032] The water storage tank 2 is used to recover the cold water discharged from the side drain port and recycle it.

[0033] The lifting pump group is used to lift the cooling water in the water storage tank 2 to the cooling tower group for cooling. The cooling tower group cools the cooling water to the required temperature. When the weather is in winter, the cooling water temperature is low and there is no need to open the cooling tower group. When the weather is in summer, the water temperature is high and the cooling tower group needs to be used to cool the cooling water. The cooling water cooled by the cooling tower group will flow into the transition water tank 1 for reuse.

[0034] like Figure 2As shown, in the embodiment, a water inlet device and a water outlet device are provided in the transition water pool 1. The water inlet device of the transition water pool 1 includes a water inlet pipe 4 and a water inlet valve 5 connected in series to the water inlet pipe 4. The water inlet pipe 4 can be connected to an external water source to provide cooling water to the transition water pool 1. The water inlet valve 5 is a solenoid valve. When the water inlet valve 5 is damaged, a normally open valve 6 is connected in series at the water inlet of the water inlet valve 5 for replacement. When the water inlet valve 5 needs to be replaced, the normally open valve 6 can be switched. For example, the structure of the water outlet device can be the same as that of the water inlet device, including a water outlet valve and a water outlet pipe. The specific structure of the water outlet device is not limited in this embodiment. Under the system action of the water inlet device and the water outlet device, it can be used to replace the cooling water in the transition water pool 1.

[0035] In the EMU test, there are certain requirements for the use temperature of cooling water. The temperature of cooling water should not be too high, otherwise the purpose of cooling cannot be achieved. In order to monitor the water temperature in the transition water tank 1, a temperature sensor 7 is arranged in the transition water tank 1. The temperature sensor 7 can measure the water temperature. If the water temperature exceeds the threshold, the old water can be discharged through the water outlet device, and the control unit controls the water inlet valve 5 to open to add new water to the transition water tank 1, thereby reducing the water temperature in the transition water tank 1.

[0036] In addition, a liquid level sensor 8 is provided in the transition water tank 1 . When the liquid level sensor 8 detects that the water level in the transition water tank 1 is too low, the control unit controls the water inlet valve 5 to open, and replenishes new water into the transition water tank 1 .

[0037] like Figure 1 and Figure 3 As shown, the variable frequency pump group includes a plurality of variable frequency pumps 9, each variable frequency pump 9 is provided with an inlet pipeline and an outlet pipeline, and each inlet pipeline and outlet pipeline is provided with a flow meter 17 and a control valve 3. In addition, each outlet pipeline is provided with a one-way valve 10 to prevent cooling water from flowing back. The inlet pipelines of each variable frequency pump 9 are connected in series to form a main inlet pipeline 11. After the cooling water enters the main inlet pipeline 11, it enters the inlet pipelines of the plurality of variable frequency pumps 9 respectively. The outlet pipelines of each variable frequency pump 9 are respectively connected to a seawater pump suction port, and each variable frequency pump 9 supplies water to different seawater pump suction ports for motor vehicle testing. The use of the variable frequency pump 9 here can adjust the flow rate and water pressure, so as to adapt to the testing of different ship equipment.

[0038] In addition, in order to reduce impurities in the water and avoid damage to ship equipment, a filter 12 is connected in series between the outlet pipe of the transition water tank 1 and the main water inlet pipe 11. The cooling water is first filtered and then transported to the ship equipment by the variable frequency pump 9.

[0039] like Figure 1 and Figure 4As shown, the fan coil 13 is connected to the outlet of the variable frequency pump group. When the ship berth motor test is not required, the cooling water originally entering the hull can be allowed to enter the fan coil 13, thereby performing air heat exchange, especially in the hot summer season, which can achieve a cooling effect. In this embodiment, a fan coil 13 is connected in parallel to the outlet pipeline of each variable frequency pump 9. The position of the fan coil 13 is arranged according to the actual use conditions. The pipeline between the fan coil 13 and the outlet pipeline of the corresponding variable frequency pump 9 is controlled by setting a control valve 3 and a one-way valve 10 for on-off control, and the outlet pipeline of the fan coil 13 is connected to the water tank 2. When the motor test is not required, the control valve 3 can be opened to allow the cooling water to enter the fan coil 13. At this time, the cooling water performs heat exchange in the fan coil 13, thereby cooling the environment around the fan coil 13, and the purpose of improving the construction environment can be achieved. In order to speed up the heat exchange rate, a blower can be used to blow the blower coil 13.

[0040] like Figure 1 As shown, the water tank 2 is provided with an overflow port 21. When there is too much cooling water in the water tank 2, the excess water can be discharged through the overflow port 21. Since the water tank 2 can recycle the used cooling water, the amount of water required for the motor vehicle test is reduced, thereby achieving the purpose of cost saving.

[0041] like Figure 1 and Figure 5 As shown, the lift pump group includes a plurality of lift pumps 14 connected in parallel, and the outlet pipeline of each lift pump 14 is respectively connected in series with a control valve 3 and a one-way valve 10, and the plurality of lift pumps 14 are used to lift cooling water into the cooling tower group. By using a plurality of lift pumps 14, on the one hand, the efficiency of conveying cooling water can be improved, and on the other hand, when one of the lift pumps 14 is damaged, the other lift pumps 14 can continue to work, so that the state of conveying cooling water can be maintained at all times.

[0042] In order to monitor the working pressure of the lifting pump group, a pressure sensor 15 is set on the outlet pipe of the lifting pump group. By monitoring the pipe pressure, the working status of the lifting pump group can be timely known. Among them, a pressure sensor 15 can be set on the pipe for outputting cooling water of each lifting pump 14 in the lifting pump group; or the pipes for outputting cooling water of each lifting pump 14 are connected in series, and a pressure sensor 15 is set on the series pipes.

[0043] like Figure 1 and Figure 2As shown, the cooling tower group includes a plurality of cooling towers 16, each cooling tower 16 is provided with two water inlet pipelines, and the water inlet pipeline of each cooling tower 16 is connected in series with a control valve 3 and a flow meter 17, wherein the control valve 3 adopts a solenoid valve, and the control valve 3 is used to control the on-off of the water inlet pipeline of the cooling tower 16, and the flow meter 17 is used to monitor the water inlet of the cooling tower 16. The water inlet pipelines of the plurality of cooling towers 16 are arranged in series, and the cooling water transported by the lifting pump group can be supplied to the plurality of cooling towers 16 after entering the water inlet pipeline of one of the cooling towers 16. By arranging a plurality of cooling towers 16, on the one hand, the efficiency of cooling water refrigeration can be improved, and on the other hand, when one of the cooling towers 16 is damaged, the other cooling towers 16 can continue to work, so that the refrigerated cooling water can be provided all the time. The refrigerated cooling water flows into the transition water tank 1 through the outlet pipeline of the cooling tower 16, so that the collected cooling water can be recycled.

[0044] The control unit is used to control the start and stop of each lifting pump 14, the variable frequency pump 9, the switch and opening degree of each valve, etc. The control unit includes a deep learning module, which can control and adjust the entire system according to the temperature, pressure, flow and other data measured in the process. For example: according to the pre-set flow and pressure, control the frequency of the variable frequency pump group and the opening degree of the control valve 3, and adjust different flow, pressure, temperature and other parameters within the set threshold range to simulate the use scenarios of different sea conditions; when the temperature of the transition pool 1 changes, control the opening and opening power of the cooling tower 16 to achieve cooling; when the temperature is extremely high, the cooling tower 16 is turned on at full rated power, and the water temperature is still higher than the threshold, the water is changed by opening the water inlet and outlet at the same time to cool down.

[0045] In summary, the implementation process of the cooling water circulation system of this embodiment is as follows: the variable frequency pump 9 draws water from the transition water tank 1 and delivers the cooling water to the seawater pump suction port of the ship to perform heat exchange on the generator, main engine and other systems. Then the cooling water with heat is discharged through the side drain port and is collected by the water storage tank 2. The cooling water in the water storage tank 2 is pumped into the cooling tower 16 through the lifting pump group to cool down, so that the temperature of the cooling water reaches the required temperature. Then the cooling water in the cooling tower 16 flows into the transition water tank 1 and is recycled again.

[0046] The cooling water circulation system can provide recyclable cooling water for the slipway motor vehicle. Due to the recyclability, the total amount of cooling water required for a motor vehicle test is greatly reduced, thereby improving the economy of using recycled water for cooling; this system uses fresh water instead of river water, thereby reducing the workload of subsequent cleaning and maintenance of equipment; in high temperature seasons, cooling water can also be pumped into the fan coil 13 for cooling and dehumidification of the slipway, especially the indoor slipway; the control unit integrates the control of the variable frequency pump 9 and the control valve 3, which can provide cooling water of different pressures and flows for different ship types, different equipment, different sea conditions and different seabed gate pressure conditions, while also ensuring the safe operation of the equipment.

[0047] The deep learning module is used to dynamically control the entire system, respond according to the temperature, pressure and other conditions on site, and reduce redundant energy consumption.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A cooling water circulation system, characterized in that: include: Transition tank, used to store cooling water; A variable frequency pump group is connected to the transition water tank through a pipeline, and is used to pump cooling water in the transition water tank and transport the cooling water to the ship equipment for motor vehicle testing; A water storage tank, connected to the side drain through a pipeline, is used to collect used cooling water; A lifting pump group is connected to the water storage tank through a pipeline and is used to pump water in the water storage tank; A cooling tower group is connected to the lifting pump group through a pipeline, and the lifting pump group transports the water in the water storage tank to the cooling tower group and cools the water in the cooling tower group, and the cooled cooling water flows into the transition water tank; A control unit is used to dynamically control the operation of the variable frequency pump group, the lifting pump group and the cooling tower group.

2. The cooling water circulation system according to claim 1, characterized in that: The transition water pool is provided with a water inlet device and a water outlet device. The water inlet device is used to store water in the transition water pool to provide cooling water, and the water outlet device is used to drain water.

3. The cooling water circulation system according to claim 2, characterized in that: The water inlet device includes a water inlet pipe and a water inlet valve connected in series to the water inlet pipe. The water inlet pipe is used to replenish water into the transition water pool, and the water inlet valve is used to control the on / off of the water inlet pipe.

4. The cooling water circulation system according to claim 3, characterized in that: The water inlet device also includes a temperature sensor and a liquid level sensor, which are arranged in the transition water tank. The temperature sensor is used to monitor the water temperature. When the water temperature is too high, the control unit controls the water inlet valve to open to replenish water to the transition water tank. The liquid level sensor is used to monitor the liquid level. When the liquid level is too low, the control unit controls the water inlet valve to open to replenish water to the transition water tank.

5. The cooling water circulation system according to claim 1, characterized in that: The variable frequency pump group includes multiple variable frequency pumps, each variable frequency pump is connected to an inlet pipeline and an outlet pipeline, each inlet pipeline and outlet pipeline is connected in series with a control valve and a flow meter, each inlet pipeline is connected to a transition water tank, and each outlet pipeline is used to provide cooling water to ship equipment. The variable frequency pump is used to transport the cooling water in the transition water tank to the ship equipment.

6. The cooling water circulation system according to claim 5, characterized in that: A one-way valve is also connected in series on the water outlet pipe of each variable frequency pump.

7. The cooling water circulation system according to claim 1, characterized in that: A filter is connected in series on the pipeline between the lifting pump group and the transition water tank.

8. The cooling water circulation system according to claim 5, characterized in that: The cooling water circulation system also includes a fan coil unit. Each of the variable frequency pumps has a fan coil unit connected in parallel to its outlet pipe. The pipe between the fan coil unit and the corresponding variable frequency pump outlet pipe is controlled by setting a control valve.

9. The cooling water circulation system according to claim 1, characterized in that: The lifting pump group includes multiple lifting pumps, each of which is connected to a water inlet pipeline and a water outlet pipeline. The water inlet pipeline of the lifting pump is connected to the water storage tank, and the water outlet pipeline of each lifting pump is connected to the cooling tower group. A control valve is connected in series on the water outlet pipeline of each lifting pump.

10. The cooling water circulation system according to claim 1, characterized in that: The water storage tank is provided with an overflow port.

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