Emergency electric seawater desalination box for ship

Abstract

The invention provides an emergency electric seawater desalination box for a ship. The emergency electric seawater desalination box comprises a box body assembly, a membrane assembly, a battery assembly, a pump motor assembly, an electric control box assembly, a fixing frame assembly and the like, the box body assembly is connected with the fixing frame assembly through screws. The membrane assembly, the battery assembly and the like are connected with the fixing frame assembly through clamping grooves or screws, so that each assembly is prevented from being damaged during shaking or carrying; the battery assembly drives all the electric appliance assemblies to operate through the electric control box. A shock pad is mounted below the pump motor assembly, so that the motor is prevented from being damaged by excessive vibration; electric energy is adopted as an energy source for seawater desalination, and a rechargeable battery is installed to get rid of the rigid need for a continuous power supply, so that the emergency use requirements on the sea and in the field are met; the membrane device is arranged in a three-section tandem manner in a limited space, so that the energy consumption and the size of the device are reduced while the water yield is high; all the components are connected through the fixing support, all the components are reasonable in layout, and the device is high in stability, small in overall size and high in carrying convenience.

Description

Technical Field

[0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a marine emergency electric seawater desalination box. Background Art

[0002] When we are sailing at sea and encounter an accident, the large-scale desalination device cannot be used, resulting in a shortage of fresh water resources. At this time, how to obtain sufficient fresh water stably and quickly becomes a problem, and emergency desalination becomes the only effective way. Because the amount and speed of fresh water acquisition are the key to ensuring the survival of personnel, emergency desalination devices with appropriate size and sufficient water output are indispensable for ships at sea.

[0003] Science and technology in today's world are changing with each passing day, and desalination technologies are naturally emerging in an endless stream. Both large and small desalination devices have mature technologies, and many water-scarce areas have also relied on desalination technology to get rid of the plight of lack of fresh water. Although large-scale desalination devices have a large water output, they are too large to transport; small-scale desalination devices are easy to carry, but the water output is often only enough for one or several people. Therefore, it is very necessary to develop a desalination device with a moderate size and appropriate water output. For example, an "emergency manual desalination box" disclosed in Chinese patent documents, with a publication number of CN211971837U, belongs to the field of seawater purification technology; the device adopts a suitcase-type structure, and the parts are standard products. The production efficiency is higher than that of commercially available products, and the cost is low. The device is made of stainless steel, which is more economical and corrosion-resistant than commercially available products. The device adopts reverse osmosis seawater desalination treatment technology. By setting a pressure gauge and a regulating valve, the water pressure generated by the lateral manual pump group for the manually operated lateral manual pump group can be monitored in real time to prevent the lateral manual pump group from generating excessive water pressure and damaging the reverse osmosis membrane. The reverse osmosis membrane-based treatment ensures the removal of salt and possible organic matter, heavy metals, salt, bacteria, viruses, etc. in the water. The device is a suitcase design, which is convenient for transportation and storage. The main components of the device, the manual pump and the reverse osmosis membrane assembly, are split combinations, which can be directly disassembled and assembled, and are easy to repair and maintain. The device uses manual pressing as a power supply method, with a small water intake and intermittent pressure. It cannot provide stable and lasting fresh water, cannot achieve the ideal water production, and will consume the physical strength of the user, thereby increasing the consumption of survival resources.

[0004] Most of the existing emergency desalination tanks use manual desalination energy to achieve the portability requirements of emergency devices, but manual energy supply cannot provide stable and lasting fresh water. Many non-emergency marine desalination devices use distillation to desalinate seawater, which consumes a lot of energy and has low efficiency. There is currently no medium-sized emergency desalination device that can meet the confined, dim and shaking environment of ships. Summary of the invention

[0005] In order to solve the above problems, this application innovatively changes the energy supply mode, process and layout, uses electric energy to drive the desalination device, and designs a rechargeable power supply to ensure the convenience of use in the restricted, dim and shaking environment of the ship. The membrane device is arranged in three stages in series in a limited space, which increases the water production efficiency while reducing the energy consumption and volume of the device. This application specifically adopts the following technical solutions.

[0006] A marine emergency electric seawater desalination box comprises a box body assembly, a membrane assembly, a battery assembly, a pump motor assembly, an electric control box assembly, a fixing frame assembly, etc.; the box body assembly is connected to the fixing frame assembly by screws; the membrane assembly, the battery assembly, etc. are connected to the fixing frame assembly by slots or screws to prevent the components from being damaged during shaking or transportation; the battery assembly drives the electrical components to operate through the electric control box; a shock-absorbing pad is installed under the pump motor assembly to prevent excessive vibration from damaging the motor.

[0007] Preferably, the membrane assembly includes a primary filter, three reverse osmosis membranes connected in series and a glass fiber reinforced plastic membrane shell, and the membrane assembly is fixed on the bracket by pipes and straps. After the seawater flows out of the first membrane, the fresh water is diverted to the water production pipeline, and the concentrated water enters the next membrane to continue reverse osmosis, effectively increasing the water production; compared with the stainless steel membrane shell of the same specification, the glass fiber reinforced plastic membrane shell is shorter in length, lighter in weight and has better corrosion resistance, which can reduce the overall size and is more suitable for the use environment of seawater desalination. The seawater is removed from the floating impurities by the water supply filter (40 mesh screen), and then pumped into the filter element by the water inlet pump to remove fine particles and suspended matter, and finally enters the reverse osmosis membrane assembly after being pressurized by the high-pressure pump. The reverse osmosis membrane assembly can remove almost all particles, colloids, organic matter, multivalent ions and most monovalent ions, and the concentrated brine is discharged, and the reverse osmosis produced water is used.

[0008] Preferably, the battery assembly includes a battery box and a transformer charger. The battery box is a 12~36 V battery, and the transformer charger is a single-phase AC220 V to DC36 V converter. A pull ring is designed on the side of the battery box to facilitate replacement and maintenance.

[0009] Preferably, the pump motor assembly includes a water pump motor and a high-pressure pump motor. The water pump motor can absorb sufficient seawater into the high-pressure pump motor, and the high-pressure pump motor pressurizes the seawater and enters the membrane assembly for reverse osmosis desalination. The water inlet pump is made of reinforced nylon and the high-pressure pump is made of duplex stainless steel to effectively cope with the high corrosiveness of seawater. The material detection meets the restrictions in GB / T17219.

[0010] Preferably, the electric control box assembly includes an electric control box and an instrument box, and the electric control box controls the switch pump motor assembly; the instrument box monitors the device through a pressure gauge and a flow meter to ensure the normal operation of the device.

[0011] Preferably, the fixing frame assembly is welded from angle steel and reinforcing rib plates, etc., so that the components are connected into a whole, the overall strength of the device is enhanced, and the convenience of carrying is also enhanced.

[0012] Therefore, the present invention has the following beneficial effects:

[0013] (1) Electricity is used as the energy source for seawater desalination. By installing rechargeable batteries, the rigid need for continuous power supply and manual pressure can be eliminated, thus meeting the emergency use requirements of seawater desalination at sea and in the wild;

[0014] (2) The emergency device changes the energy supply mode, process and layout, uses electric energy to drive the desalination device, and designs a rechargeable power supply to ensure the convenience of use in the restricted, dim and rocking environment of the ship. The membrane device adopts a three-stage series arrangement in the limited space, which can reduce the energy consumption and volume of the device while increasing the water production efficiency. The total size of the device can reach 900 mm×600 mm×520 mm, and the water production efficiency is 50 L / h.

[0015] (3) The components are connected by a fixed bracket, the layout of the components is reasonable, the device is stable, the overall volume is small, and it is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0017] Figure 1 It is an exploded schematic diagram of the structure of the embodiment of the present application (excluding the box assembly);

[0018] Figure 2 It is an overall schematic diagram of an embodiment of the present application;

[0019] Figure 3 These are two views of the device according to the embodiment of the present application (excluding the box assembly).

[0020] In the figure: 1. membrane assembly, 1-1. primary filter, 1-2. reverse osmosis membrane, 1-3. fiberglass membrane shell, 2. battery assembly, 2-1. transformer charger, 2-2. battery box, 3. pump motor assembly, 3-1. water pump motor, 3-2. high pressure pump motor, 4. electric control box assembly, 4-1. electric control box, 4-2. instrument box, 5. fixing frame assembly, 6. pipeline assembly, 6-1. seawater inlet, 6-2 concentrated water outlet, 6-3 fresh water outlet, 7. box assembly. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are further described below through specific examples.

[0022] like Figure 1 , Figure 2 As shown, the present invention relates to a marine emergency electric seawater desalination box, comprising a box assembly 7, a membrane assembly 1, a battery assembly 2, a pump motor assembly 3 and an electric control box assembly 4, a fixing frame assembly 5, etc.; the box assembly 7 is connected with the fixing frame assembly 5 by screws; the membrane assembly 1, the battery assembly 2 and the fixing frame assembly 5 are connected by slots or screws to prevent damage to the components during shaking or transportation; the battery assembly 2 drives the various electrical components to operate through the electric control box 4-1; and a shock-absorbing pad is installed under the pump motor assembly 3.

[0023] Specifically, the battery assembly 2 includes a battery box 2-2 and a transformer charger 2-1. A pull ring is designed on the side of the battery box to facilitate replacement and maintenance.

[0024] Specifically, the pump motor assembly 3 includes a water pump motor 3-1 and a high-pressure pump motor 3-2. The water pump motor 2-1 can absorb sufficient seawater into the high-pressure pump motor 3-2. The high-pressure pump motor 3-2 pressurizes the seawater and then enters the membrane assembly 1 for reverse osmosis desalination.

[0025] Specifically, the electric control box assembly 4 includes an electric control box 4-1 and an instrument box 4-2. The electric control box controls the switch pump motor assembly 3; the instrument box 4-2 monitors the device through a pressure gauge and a flow meter to ensure the normal operation of the device.

[0026] Specifically, the fixing frame assembly 5 is welded by angle steel and reinforcing rib plates, etc., so that the components are connected into a whole, the overall strength of the device is enhanced, and the convenience of carrying is also enhanced.

[0027] Embodiment 1: The working process of the present invention is as follows.

[0028] like Figure 3 The two views of the 50 L / h marine emergency electric desalination tank are shown. The reverse osmosis membrane 1-2 and the battery box 2-1 are located on one side of the fixed frame assembly 5, and the reverse osmosis membrane 1-2 is located above the battery box 2-1; the pump motor assembly 3, the electric control box assembly 4 and the transformer charger 2-1 are located on the other side of the fixed frame assembly 5. The suction range of the water pump motor 3-1 is selected as 4 m, the head is selected as 40 m, and the maximum opening flow rate is 0.96 m³ / h. The water inlet flow rate of the high-pressure pump motor 3-2 is 0.52 m³ / h, and the head is 600 m. The battery box 2-2 is a 36 V 50AH lithium iron phosphate battery pack. When the box is closed, the total size of the device is 900 mm×600 mm×520 mm. The fixed frame assembly 5 can be taken out together with other components during maintenance.

[0029] When in use, first press the power button on the electric control box 4-1 to turn on the power, then press the water pump motor 3-1, the switch starts the motor to start pumping water, the seawater passes through a 40-mesh screen to remove floating impurities, and then is pumped into the primary filter 1-1 through the water pump motor (3-1). The primary filter 1-1 has a filtration accuracy of 5 μm and can remove fine particles and suspended matter. Finally, it enters the reverse osmosis membrane assembly 1 after being pressurized by the high-pressure pump motor 3-2. The membrane assembly 1 can remove almost all particles, colloids, organic matter, multivalent ions and most monovalent ions. Fresh water enters the water outlet through the water production pipeline, and concentrated water is discharged through the concentrated water outlet pipeline, completing the seawater desalination process.

[0030] A pressure gauge is designed at the outlet of the high-pressure pump motor 3-2. When the pressure exceeds the set pressure value, it is necessary to replace the reverse osmosis membrane or turn the needle valve clockwise to reduce the flow and lower the pressure. A flow meter is installed at the fresh water outlet. If the flow is too large or too small, the needle valve can also be used to adjust the flow within an appropriate range.

[0031] The design of the three-branch reverse osmosis membrane 1-2 can ensure a good water production volume and water quality, and has a good filtration and purification effect. The reverse osmosis membrane used is a dense organic membrane that only allows water molecules to pass through, while preventing the salt ions in the water from passing through, and the desalination rate can reach more than 98%. At the same time, reverse osmosis can effectively remove impurities such as inorganic salts, suspended matter, organic matter, colloids, bacteria, viruses, etc., greatly improving the quality of the effluent water and meeting the standards for drinking water.

[0032] When the reverse osmosis membrane needs to be replaced, first remove the pipes and straps connected to the membrane shell, then remove the end cover on one side, then knock on the end cover on the other side, push the reverse osmosis membrane and other components backward out of the membrane shell, and finally separate the reverse osmosis membrane and other components and replace them. After the replacement is completed, return the components to the original route for installation.

[0033] Table 1 shows the performance parameters of the 50 L / h marine emergency electric desalination tank device.

[0034] Table 1

[0035]

[0036] The above embodiments are only used to further illustrate a marine emergency electric seawater desalination tank of the present application, but the present application is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A marine emergency electric seawater desalination tank, characterized in that: The invention comprises a box assembly (7), a membrane assembly (1), a battery assembly (2), a pump motor assembly (3), an electric control box assembly (4) and a fixing frame assembly (5); the box assembly (7) is connected to the fixing frame assembly by screws; the membrane assembly (1), the battery assembly (2) and the fixing frame assembly (5) are connected to the fixing frame assembly (5) by slots or screws to prevent the components from being damaged during shaking or transportation; the battery assembly (2) drives the various electrical components to operate through the electric control box (4-1); and a shock-absorbing pad is installed below the pump motor assembly (3) to prevent the motor from being damaged by excessive vibration.

2. The marine emergency electric seawater desalination tank according to claim 1, characterized in that: The membrane assembly (1) comprises a primary filter (1-1), three reverse osmosis membranes (1-2) connected in series and a glass fiber reinforced plastic membrane shell (1-3), the membrane assembly (1) being fixed on a bracket by means of a pipe (6) and a strap; the battery assembly (2) comprises a battery box (2-2) and a voltage transformer charger (2-1), the battery box (2-1) being provided with a pull ring on its side; the pump motor assembly (3) comprises a water pump motor (3-1) and a high-pressure pump motor (3-2), the water pump motor (3-1) being able to draw sufficient seawater into the high-pressure pump motor (3-2), the high-pressure pump motor (3-2) pressurizing the seawater and then entering the membrane assembly (1) for reverse osmosis desalination; the electric control box assembly (4) comprising an electric control box (4-1) and an instrument box (4-2), the electric control box (4-1) controlling the switch of the pump motor assembly (3); the instrument box (4-2) monitoring the device via a pressure gauge and a flow meter; the fixing frame assembly (5) being welded from angle steel and reinforcing rib plates.

3. The marine emergency electric seawater desalination tank according to claim 1, characterized in that: When the box is closed, the overall dimensions of the device are 900 mm × 600 mm × 520 mm. During maintenance, the fixing frame assembly (5) can be taken out of the box together with other components.

4. The marine emergency electric seawater desalination tank according to claim 2, characterized in that: Electric energy is used as the energy source for seawater desalination. By installing rechargeable batteries, the rigid need for continuous power supply is eliminated, and emergency use requirements at sea and in the wild are met. The output voltage of the battery in the battery box (2-2) is 12~36V.

5. The marine emergency electric seawater desalination tank according to claim 1, characterized in that: During use, seawater is passed through a 40-mesh screen to remove floating impurities, then pumped through a water pump motor (3-1) to a primary filter (1-1) to remove fine particles and suspended matter, and finally pressurized by a high-pressure pump motor (3-2) to enter the membrane assembly (1). The membrane assembly (1) can remove almost all particles, colloids, organic matter, multivalent ions and most monovalent ions, and the concentrated brine is discharged to produce water for use.

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