Device for desalinating seawater and assisting in driving ship by using RO (Reverse Osmosis)

Abstract

The utility model provides a device for desalinating seawater and assisting in driving a ship by using RO (Reverse Osmosis), which comprises a water producing pipeline, a water using pipeline and a cleaning pipeline, and the water producing pipeline is sequentially provided with a lift pump, a security filter, a water inlet tank, a water inlet pump, a precision filter, a booster pump, an RO membrane group and a water producing tank along the water inlet direction; the water pipeline and the cleaning pipeline are both connected with the water outlet end of the water production tank, and the cleaning pipeline is connected with the security filter and the precision filter respectively. The volume and the weight of the device are smaller than those of a traditional vacuum distillation type desalting device, and the ship carrying capacity can be improved; the RO membrane group is simple and easy to operate, and can operate without heating seawater and an additional vacuum pump, so that manual operation is reduced; bacteria and viruses can be treated simultaneously when the RO membrane group is used for desalination treatment, and the treated fresh water can be used without disinfection; by-product high-pressure concentrated water generated by manufacturing fresh water through the RO membrane module can be used for assisting or directly driving the ship, so that the energy loss of ship maneuvering is reduced.

Description

Technical Field

[0001] The utility model relates to the field of seawater desalination equipment, in particular to a device which uses RO to desalinate seawater and assists in driving a ship. Background Art

[0002] At present, the mainstream ship desalination device in China is a vacuum distillation desalination device, which requires an additional vacuum pump and heat exchange plate to ensure the distillation efficiency, and attention should be paid to the structure of the heat exchange surface. The vacuum degree and temperature will affect the distillation effect. The vacuum distillation desalination device cannot remove bacteria and viruses, and needs to be disinfected during use, which increases energy consumption; the mainstream method of ship driving is propeller drive, which requires a large amount of electrical energy or mechanical energy to drive, so it will carry more fuel or use larger capacity batteries to meet long-distance voyages. The vacuum pump is noisy and complex to maintain, which may cause secondary hazards to the crew on the ship. Utility Model Content

[0003] In order to solve the above difficulties, the utility model provides a device for desalinating seawater using RO membrane and assisting in driving a ship.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A device for desalinating seawater with RO and assisting in driving a ship, comprising a water production pipeline, a water pipeline and a cleaning pipeline, wherein a water inlet is arranged at one end of the water production pipeline, and a lifting pump, a safety filter, a water inlet tank, a water inlet pump, a precision filter, a booster pump, an RO membrane group and a water production tank are arranged in sequence along the water inlet direction; the water pipeline and the cleaning pipeline are both connected to the water outlet end of the water production tank, and the cleaning pipeline is respectively connected to the safety filter and the precision filter for backwashing the safety filter and the precision filter.

[0006] Preferably, it further comprises a concentrate discharge pipeline, wherein the concentrate discharge pipeline is connected to the concentrate outlet end of the RO membrane group, and a concentrate discharge control valve and a flow sensor are arranged on the concentrate discharge pipeline.

[0007] Preferably, the water inlet end of the lifting pump is provided with a total water inlet control valve, and the water outlet end of the water inlet tank is provided with a water inlet tank outlet control valve; the water inlet end of the boosting pump is provided with a membrane inlet control valve; the water inlet end of the water production tank is provided with a total water production control valve, and the water outlet end of the water production tank is provided with a water production tank outlet control valve.

[0008] Preferably, a first inspection valve is arranged between the lifting pump and the safety filter; a second inspection valve and a first check valve are arranged between the safety filter and the water inlet tank; a second check valve and a third inspection valve are arranged between the water inlet pump and the precision filter; a fourth inspection valve is arranged between the precision filter and the membrane inlet control valve; the RO membrane group comprises a first RO membrane group and a second RO membrane group, a membrane inlet inspection valve is arranged between the boosting pump and the first RO membrane group, a first membrane outlet inspection valve and a third check valve are arranged between the clean water outlet end of the first RO membrane group and the total water production control valve; a concentrated water detection valve is arranged between the concentrated water outlet end of the first RO membrane group and the water inlet end of the second RO membrane group, a second RO membrane outlet inspection valve and a fourth check valve are arranged between the clean water outlet end of the second membrane group and the total water production control valve.

[0009] Preferably, the water pipeline is connected to the water production tank outlet control valve, and a water pump and a water control valve are provided on the water pipeline. A fifth inspection valve and a sixth inspection valve are respectively provided at both ends of the water pump, and the water control valve is arranged near the water outlet.

[0010] Preferably, the cleaning pipeline is connected to the water production tank outlet control valve, and a cleaning pump and a first cleaning control valve are provided on the cleaning pipeline. A seventh inspection valve and an eighth inspection valve are respectively provided at both ends of the cleaning pump, and a fifth check valve is provided at the water outlet end of the first cleaning control valve; a sixth check valve is provided between the fifth check valve and the water outlet end of the safety filter; a seventh check valve is provided between the fifth check valve and the precision filter; and an eighth check valve is provided between the fifth check valve and the fourth inspection valve.

[0011] Preferably, the cleaning pipeline is provided with a first discharge outlet and a second discharge outlet, a third cleaning control valve is provided between the water inlet end of the security filter and the first discharge outlet, a water inlet tank discharge control valve is provided between the water inlet tank and the first discharge outlet; and a second cleaning control valve is provided between the precision filter and the second discharge outlet.

[0012] Preferably, a first pressure gauge is provided on the security filter; a second pressure gauge and a third pressure gauge are respectively provided at both ends of the precision filter; a fourth pressure gauge and a fifth pressure gauge are respectively provided at both ends of the first RO membrane group; and a sixth pressure gauge and a seventh pressure gauge are respectively provided at both ends of the second RO membrane group.

[0013] Preferably, the water inlet tank and the water production tank are both provided with a high liquid level alarm sensor and a low liquid level alarm sensor.

[0014] The beneficial effects of the utility model are as follows: the RO membrane group is used for seawater desalination treatment, and it can be operated through the RO membrane assembly, a booster pump and a simple filter, and its volume and weight are both smaller than those of a traditional vacuum distillation desalination device, and the carrying capacity of ships can be increased; the RO membrane group is simple and easy to operate, and can be operated without heating seawater or an additional vacuum pump, and can be operated stably and automatically, reducing manual operation; the RO membrane group can simultaneously treat bacteria and viruses during desalination treatment, and the treated fresh water can be used without disinfection, reducing the energy consumption and equipment required for the disinfection process; the RO membrane group produces a by-product of high-pressure concentrated water when manufacturing fresh water, and using it to assist or directly drive the ship can greatly reduce the energy loss of the ship's maneuverability and increase the ship's cruising range, and the by-product of high-pressure concentrated water is not large, and the solute is only the salts dissolved in the seawater, which can be directly discharged without additional treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Among them: water production pipeline 1, water use pipeline 2, cleaning pipeline 3, concentrated water discharge pipeline 4, lifting pump 5, security filter 6, water inlet tank 7, water inlet pump 8, precision filter 9, booster pump 10, RO membrane group 11, first RO membrane group 111, second RO membrane group 112, water inlet end 113, clean water outlet end 114, concentrated water outlet end 115, water production tank 12, concentrated water discharge control valve 13, flow sensor 14, total water inlet control valve 15, water inlet tank outlet control valve 16, membrane inlet control valve 17, total water production control valve 18, water production tank outlet control valve 19, first inspection valve 20, second inspection valve 21, first check valve 22, second check valve 23, third inspection valve 24, fourth inspection valve 25, membrane inlet inspection valve 26, first membrane outlet Inlet inspection valve 27, third check valve 28, concentrated water detection valve 29, second membrane outlet inspection valve 30, fourth check valve 31, water pump 32, water control valve 33, fifth inspection valve 34, sixth inspection valve 35, water outlet 36, cleaning pump 37, first cleaning control valve 38, seventh inspection valve 39, eighth inspection valve 40, fifth check valve 41, sixth check valve 42, seventh check valve 43, eighth check valve 44, first discharge outlet 45, second discharge outlet 46, third cleaning control valve 47, water inlet tank discharge control valve 48, second cleaning control valve 49, first pressure gauge 50, second pressure gauge 51, third pressure gauge 52, fourth pressure gauge 53, fifth pressure gauge 54, sixth pressure gauge 55, seventh pressure gauge 56. DETAILED DESCRIPTION

[0017] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0018] In the description of the present invention, it should be noted that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figure 1 As shown, the utility model provides a device for desalinating seawater with RO and assisting in driving a ship, which includes a water production pipeline 1, a water pipeline 2, a cleaning pipeline 3 and a concentrated water discharge pipeline 4. Among them, a water inlet is arranged at one end of the water production pipeline 1, and a lifting pump 5, a safety filter 6, a water inlet tank 7, a water inlet pump 8, a precision filter 9, a booster pump 10, an RO membrane group 11 and a water production tank 12 are arranged in sequence along the direction of the water inlet flow. The water pipeline 2 and the cleaning pipeline 3 are both connected to the water outlet end of the water production tank 12, and the cleaning pipeline 3 is respectively connected to the safety filter 6 and the precision filter 9 to backwash the safety filter 6 and the precision filter 9. The concentrated water discharge pipeline 4 is connected to the concentrated water outlet end 115 of the RO membrane group 11, and a concentrated water discharge control valve 13 and a flow sensor 14 are arranged on the concentrated water discharge pipeline 4.

[0020] The water inlet end of the lifting pump 5 is provided with a total water inlet control valve 15; the water outlet end of the water inlet tank 7 is provided with a water inlet tank outlet control valve 16; the water inlet end of the booster pump 10 is provided with a membrane inlet control valve 17; the water inlet end of the water production tank 12 is provided with a total water production control valve 18, and the water outlet end of the water production tank 12 is provided with a water production tank outlet control valve 19.

[0021] Furthermore, a first inspection valve 20 is provided between the boost pump 5 and the safety filter 6; a second inspection valve 21 and a first check valve 22 are provided between the safety filter 6 and the water inlet tank 7. A second check valve 23 and a third inspection valve 24 are provided between the water inlet pump 8 and the precision filter 9; a fourth inspection valve 25 is provided between the precision filter 9 and the membrane inlet control valve 17.

[0022] The RO membrane group 11 includes a first RO membrane group 111 and a second RO membrane group 112. The first RO membrane group 111 and the second RO membrane group 112 each include a water inlet 113, a clean water outlet 114, and a concentrated water outlet 115. The concentrated water outlet 115 of the first RO membrane group 111 is connected to the water inlet 113 of the second RO membrane group 112. A membrane inlet inspection valve 26 is provided between the booster pump 10 and the first RO membrane group 111, and a first membrane outlet inspection valve 27 and a third check valve 28 are provided between the clean water outlet 114 of the first RO membrane group 111 and the total water production control valve 18. A concentrate detection valve 29 is provided between the concentrate outlet 115 of the first RO membrane group 111 and the water inlet 113 of the second RO membrane group 112 , and a second membrane outlet inspection valve 30 and a fourth check valve 31 are provided between the clean water outlet 114 of the second RO membrane group 112 and the total water production control valve 18 .

[0023] The water pipeline 2 is connected to the water production tank outlet control valve 19. A water pump 32 and a water control valve 33 are provided on the water pipeline 2. A fifth inspection valve 34 and a sixth inspection valve 35 are provided at both ends of the water pump 32 respectively. The water control valve 33 is arranged near the water outlet 36.

[0024] The cleaning pipeline 3 is connected to the water production tank outlet control valve 19, and a cleaning pump 37 and a first cleaning control valve 38 are provided on the cleaning pipeline 3. The seventh inspection valve 39 and the eighth inspection valve 40 are provided at both ends of the cleaning pump 37, and the water outlet end of the first cleaning control valve 38 is provided with a fifth check valve 41. A sixth check valve 42 is provided between the fifth check valve 41 and the water outlet end of the security filter 6, and a seventh check valve 43 is provided between the fifth check valve 41 and the precision filter 9. An eighth check valve 44 is provided between the fifth check valve 41 and the fourth inspection valve 25.

[0025] The cleaning pipeline 3 is provided with a first discharge outlet 45 and a second discharge outlet 46, a third cleaning control valve 47 is provided between the water inlet end of the safety filter 6 and the first discharge outlet 45, and a water inlet tank discharge control valve 48 is provided between the water inlet tank 7 and the first discharge outlet 45. A second cleaning control valve 49 is provided between the precision filter 9 and the second discharge outlet 46.

[0026] A first pressure gauge 50 is provided on the security filter 6; a second pressure gauge 51 and a third pressure gauge 52 are provided at both ends of the precision filter 9; a fourth pressure gauge 53 and a fifth pressure gauge 54 are provided at both ends of the first RO membrane group 111; a sixth pressure gauge 55 and a seventh pressure gauge 56 are provided at both ends of the second RO membrane group 112.

[0027] The water inlet tank 7 and the water production tank 12 are both provided with a high liquid level alarm sensor 57 and a low liquid level alarm sensor 58 .

[0028] In the initial state of the utility model, it is assumed that there is no water in the water inlet tank 7 and the water production tank 12, or the water level does not exceed the high level of each tank, all control valves are closed, and the inspection valve is open. When the system is running, theoretically, the liquid levels in the water inlet tank 7 and the water production tank 12 are kept below the high level and above the low level, and the high-pressure concentrated water produced by the RO membrane group 11 can provide auxiliary power or direct power for the ship, reducing the energy consumption of the ship's drive.

[0029] When the system starts, the seawater first passes through the lifting pump 5, is filtered through the security filter 6, and then enters the water inlet tank 7. The water inlet tank 7 is equipped with a high liquid level alarm sensor 57 and a low liquid level alarm sensor 58. When the water level in the water inlet tank 7 is at or below the low liquid level alarm sensor 58, that is, the liquid level is low, the total water inlet control valve 15 will receive a signal to open, and at the same time, the lifting pump 5 is opened to extract seawater into the water inlet tank 7. When the liquid level reaches the high liquid level alarm sensor 57, that is, the high liquid level, the lifting pump 5 is temporarily stopped, the total water inlet control valve 15 is closed, the water inlet tank outlet control valve 16 is opened, the water inlet pump 8 is opened, the membrane inlet control valve 17, the total water production control valve 18 and the concentrated water discharge control valve 13 are opened. At this time, the produced water will enter the water production tank 12 for storage. When the liquid level in the water production tank 12 reaches the high liquid level, the water inlet tank outlet control valve 16, the water inlet pump 8, the membrane inlet control valve 17 and the total water production control valve 18 are temporarily closed. At this time, you can choose to use water or shut down the system according to the actual situation. When the liquid levels in the water inlet tank 7 and the water production tank 12 are both at high levels, the water production process is temporarily stopped, and water is used or stored according to the actual situation. In order to ensure that seawater does not corrode the system, the water inlet tank discharge control valve 48 will be opened and the seawater in the water inlet tank 7 will be emptied, and the water inlet tank discharge control valve 48 will be closed after emptying.

[0030] When water use and cleaning are required, the water level in the water production tank 12 is first determined based on the high liquid level alarm sensor 57 and the low liquid level alarm sensor 58. Water use and cleaning can be performed when the liquid level is higher than the low liquid level alarm sensor 58. The cleaning condition is determined based on the pressure gauge conditions between the components. When the pressure value of the first pressure gauge 50 is greater than the set pressure value, or the difference between the second pressure gauge 51 and the third pressure gauge 52 is too large, or the pressure difference between the fourth pressure gauge 53 and the fifth pressure gauge 54, the sixth pressure gauge 55 and the seventh pressure gauge 56 is greater than the set value, it is determined that cleaning can be performed to extend the life.

[0031] During cleaning, open the water production tank outlet control valve 19, open the cleaning pump 37, the first cleaning control valve 38, the second cleaning control valve 49, the third cleaning control valve 47, and the concentrated water discharge control valve 13 to reuse the produced water in the system as cleaning water, backwash the precision filter 9 and the security filter 6, and clean the RO membrane group 11 for harmless discharge. When the pressure value of the first pressure gauge 50 is less than the set pressure value, or the difference between the second pressure gauge 51 and the third pressure gauge 52 is reasonable, or the pressure difference between the fourth pressure gauge 53 and the fifth pressure gauge 54, the sixth pressure gauge 55 and the seventh pressure gauge 56 is less than the set value, it is determined that the cleaning can be ended. If the difference is always too large, replace the accessories or consumables according to the actual situation. When using water, turn off the cleaning pump 37, turn off the first cleaning control valve 38, turn on the water pump 32, and open the water control valve 33 for use.

[0032] A large number of check valves are added to the system of the utility model to prevent the backflow of liquid from affecting the efficiency of the entire process. The inspection valve is a manual ball valve, which is mainly used to facilitate the inspection of various parts of the system and the replacement of damaged equipment. When a certain equipment needs to be replaced, it can be quickly disassembled and replaced by simply closing the nearest inspection valve and control valve connected to it.

[0033] The utility model RO membrane group 11 will produce byproduct high-pressure concentrated water when producing fresh water, which is about 10% to 30% of the total water volume. It is used to assist or directly drive ships and can be discharged without decompression, which can greatly reduce the energy loss of ship maneuvers and increase the cruising range of ships. It can also reduce the corrosion rate of propellers to extend their life, reduce the amount of fuel required for ships to sail, and the byproduct concentrated water has no other pollutants and can be directly discharged in small quantities. The utility model reduces the equipment required for ships to sail, such as vacuum pumps, sterilization equipment, etc., and uses RO membrane groups 11 to desalinate seawater. It can be operated through RO membrane groups 11, booster pumps 10 and simple filters. The volume and weight are both smaller than traditional vacuum distillation desalination devices, which increases the carrying capacity of ships. The RO membrane group 11 is simple and easy to operate. It does not require seawater heating or an additional vacuum pump to operate. It can operate stably and automatically, reducing manual operation. The RO membrane group 11 can simultaneously treat bacteria and viruses during desalination treatment. The treated fresh water can be used without disinfection, reducing the energy consumption and equipment required for the disinfection process. If the RO membrane component 11 is damaged, only the corresponding membrane component needs to be replaced to resume operation. Maintenance is simple, fast and efficient.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for desalinating seawater with RO and assisting in driving a ship, comprising a water production pipeline, a water pipeline and a cleaning pipeline, characterized in that: A water inlet is arranged at one end of the water production pipeline, and a lifting pump, a safety filter, a water inlet tank, a water inlet pump, a precision filter, a booster pump, an RO membrane group and a water production tank are arranged in sequence along the water inlet direction; the water pipe and the cleaning pipe are both connected to the water outlet end of the water production tank, and the cleaning pipe is respectively connected to the safety filter and the precision filter for backwashing the safety filter and the precision filter.

2. The device for desalinating seawater with RO and assisting in driving a ship according to claim 1, characterized in that: It also includes a concentrated water discharge pipeline, which is connected to the concentrated water outlet end of the RO membrane group. The concentrated water discharge pipeline is provided with a concentrated water discharge control valve and a flow sensor.

3. The device for desalinating seawater with RO and assisting in driving a ship according to claim 1, characterized in that: The water inlet end of the lifting pump is provided with a total water inlet control valve, and the water outlet end of the water inlet tank is provided with a water inlet tank outlet control valve; the water inlet end of the booster pump is provided with a membrane inlet control valve; the water inlet end of the water production tank is provided with a total water production control valve, and the water outlet end of the water production tank is provided with a water production tank outlet control valve.

4. The device for desalinating seawater with RO and assisting in driving a ship according to claim 3, characterized in that: A first inspection valve is arranged between the lifting pump and the safety filter; a second inspection valve and a first check valve are arranged between the safety filter and the water inlet tank; a second check valve and a third inspection valve are arranged between the water inlet pump and the precision filter; a fourth inspection valve is arranged between the precision filter and the membrane inlet control valve; the RO membrane group includes a first RO membrane group and a second RO membrane group, a membrane inlet inspection valve is arranged between the boosting pump and the first RO membrane group, a first membrane outlet inspection valve and a third check valve are arranged between the clean water outlet end of the first RO membrane group and the total water production control valve; a concentrated water detection valve is arranged between the concentrated water outlet end of the first RO membrane group and the water inlet end of the second RO membrane group, and a second RO membrane outlet inspection valve and a fourth check valve are arranged between the clean water outlet end of the second RO membrane group and the total water production control valve.

5. The device for desalinating seawater with RO and assisting in driving a ship according to claim 3, characterized in that: The water pipeline is connected to the water production tank outlet control valve, and a water pump and a water control valve are arranged on the water pipeline. The fifth inspection valve and the sixth inspection valve are arranged at both ends of the water pump respectively, and the water control valve is arranged near the water outlet.

6. The device for desalinating seawater with RO and assisting in driving a ship according to claim 4, characterized in that: The cleaning pipeline is connected to the water production tank outlet control valve, and a cleaning pump and a first cleaning control valve are provided on the cleaning pipeline. The seventh inspection valve and the eighth inspection valve are respectively provided at both ends of the cleaning pump, and a fifth check valve is provided at the water outlet end of the first cleaning control valve; a sixth check valve is provided between the fifth check valve and the water outlet end of the safety filter; a seventh check valve is provided between the fifth check valve and the precision filter; and an eighth check valve is provided between the fifth check valve and the fourth inspection valve.

7. The device for desalinating seawater with RO and assisting in driving a ship according to claim 6, characterized in that: The cleaning pipeline is provided with a first discharge outlet and a second discharge outlet, a third cleaning control valve is provided between the water inlet end of the safety filter and the first discharge outlet, a water inlet tank discharge control valve is provided between the water inlet tank and the first discharge outlet; a second cleaning control valve is provided between the precision filter and the second discharge outlet.

8. The device for desalinating seawater with RO and assisting in driving a ship according to claim 4, characterized in that: The security filter is provided with a first pressure gauge; the two ends of the precision filter are respectively provided with a second pressure gauge and a third pressure gauge; the two ends of the first RO membrane group are respectively provided with a fourth pressure gauge and a fifth pressure gauge; the two ends of the second RO membrane group are respectively provided with a sixth pressure gauge and a seventh pressure gauge.

9. The device for desalinating seawater with RO and assisting in driving a ship according to claim 1, characterized in that: The water inlet tank and the water production tank are both provided with a high liquid level alarm sensor and a low liquid level alarm sensor.

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