Reverse osmosis membrane cleaning device applied to direct current power transmission project

Abstract

The utility model relates to a reverse osmosis membrane cleaning device applied to a direct current power transmission project, which comprises a frame, a cleaning system and moving wheels, the moving wheels are arranged at the bottom of the frame, the cleaning system is arranged on the frame, the cleaning system comprises a water inlet pipe assembly, a water outlet pipe assembly, a water pump, a water tank and a membrane shell, and the membrane shell is used for installing a reverse osmosis membrane to be cleaned. One end of the water inlet pipe assembly is connected with the water pump, and the other end is connected with a water inlet on the membrane shell; one end of the water outlet pipe assembly is connected with the water outlet in the membrane shell, and the other end of the water outlet pipe assembly is connected with the water tank. The cleaning device can adapt to cleaning of the membrane element of a single membrane shell under most working conditions in a direct-current power transmission project, and the detached membrane element is cleaned on site, so that the problems of trouble, long waiting period and the like caused by returning the membrane element to a factory for cleaning are solved.

Description

Technical Field

[0001] The utility model relates to a reverse osmosis membrane cleaning device applied to a direct current power transmission project. Background Art

[0002] Reverse osmosis technology is widely used in the field of water treatment. It is also used in valve pure water cooling systems in DC power transmission projects. Its core is to separate the solute and solvent in the solution through membrane elements, thereby achieving water purification. During use, the reverse osmosis membrane will be affected by various pollutants, such as particulate matter, organic matter, microorganisms, etc. These pollutants will form a deposition layer on the membrane surface, reduce the permeability of the membrane, and affect the water treatment effect. In order to maintain the performance of the reverse osmosis membrane and extend its service life, the membrane element needs to be cleaned regularly. However, when the membrane element is seriously blocked, the cleaning function of the system itself has failed. At this time, the membrane element needs to be removed for offline cleaning. The existing reverse osmosis membrane cleaning devices are mainly focused on the selection of cleaning methods, but have not been studied in terms of the convenience and efficiency of the device. The traditional cleaning operation is to remove the reverse osmosis membrane element of the on-site equipment, then transport it to the cleaning device manufacturer, and then transport it to the equipment site after cleaning. This process involves the storage and protection of the membrane element. The membrane element itself is relatively fragile; and this cycle will be relatively long, which cannot adapt to the working conditions of some projects with tight maintenance schedules. Utility Model Content

[0003] The utility model aims to provide a reverse osmosis membrane cleaning device applied to a DC power transmission project, so as to solve the problems of troublesome and long cycle of the existing cleaning method.

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

[0005] A reverse osmosis membrane cleaning device used in a direct current power transmission project comprises a frame, a cleaning system and moving wheels. The moving wheels are arranged at the bottom of the frame and the cleaning system is arranged on the frame. The cleaning system comprises an inlet pipe assembly, an outlet pipe assembly, a water pump, a water tank and a membrane shell. The membrane shell is used to install the reverse osmosis membrane to be cleaned. One end of the inlet pipe assembly is connected to the water pump, and the other end is connected to the water inlet on the membrane shell; one end of the outlet pipe assembly is connected to the water outlet on the membrane shell, and the other end is connected to the water tank. The water suction port of the water pump is connected to the water tank, and the water tank is used to hold the cleaning liquid.

[0006] Furthermore, the movable wheels include two fixed casters and two universal casters.

[0007] Furthermore, the water inlet pipe assembly includes a water inlet main pipe and a water inlet branch. There are at least two water inlet branches and at least two membrane shells. One end of the water inlet main pipe is connected to the water pump, and the other end of the water inlet main pipe is connected to each water inlet branch. A filter is connected in series to the water inlet main pipe.

[0008] Furthermore, a first valve is provided on the water inlet branch.

[0009] Furthermore, the water inlet branch is provided with a drain valve.

[0010] Furthermore, the water outlet pipe assembly includes a clean water pipe, a waste water pipe and a confluence pipe, the confluence pipe is connected to the water tank, one end of the clean water pipe is connected to the clean water outlet of the membrane shell, one end of the waste water pipe is connected to the waste water outlet of the membrane shell, the other end of the clean water pipe and the other end of the waste water pipe are both connected to the confluence pipe to converge the cleaned solution into the water tank.

[0011] Furthermore, a second valve is provided on the wastewater pipe.

[0012] Furthermore, a section of the manifold extends into the water tank to achieve connection with the water tank.

[0013] Furthermore, an electric heater is provided on one side of the water tank, and a thermometer is provided on the pipeline between the water tank and the water pump for measuring the water temperature.

[0014] Furthermore, a third valve is provided on the pipeline between the water tank and the water pump.

[0015] Beneficial effects of the utility model:

[0016] The utility model is a reverse osmosis membrane cleaning device applied to a DC power transmission project. The whole is a frame structure, and the water tank, water pump, water pipe and other parts are centrally installed on the frame. The structure is compact and can be transported to the reverse osmosis equipment site by conventional means of transportation. The membrane element to be cleaned removed from the reverse osmosis equipment can be installed in the membrane shell of the utility model, and then the cleaning liquid in the water tank is circulated to the membrane shell by a water pump to clean the membrane element. The cleaning device can adapt to the cleaning of the membrane element of a single membrane shell under most working conditions in the DC power transmission project, and clean it on site, thereby avoiding the trouble caused by returning the membrane element to the factory for cleaning, long waiting period and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of a reverse osmosis membrane cleaning device of the utility model applied to a DC power transmission project;

[0018] Figure 2 This is the view after removing the frame structure;

[0019] Figure 3 yes Figure 2 Another angle view of the structure shown;

[0020] Figure 4 is a view of the membrane shell portion.

[0021] 1. Frame; 11. Lifting hole; 2. Control box; 3. Moving wheel; 40. Flange; 41. Water pump; 42. Filter; 43. Water inlet main pipe; 44. Drain valve; 45. Pressure gauge; 46. First valve; 47. Water inlet branch; 48. Sampling valve; 49. Third valve; 5. Water tank; 6. Membrane shell; 61. Clamp; 71. Clean water pipe; 72. Waste water pipe; 73. Confluence pipe; 74. Fourth valve; 75. Second valve; 8. Tool box; 9. Electric heater. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] Embodiments of the present utility model:

[0024] like Figure 1-Figure 4 As shown, a reverse osmosis membrane cleaning device used in a DC power transmission project includes a frame 1, a cleaning system, and moving wheels 3. The moving wheels 3 are arranged at the bottom of the frame 1. The moving wheels 3 include two fixed casters and two universal casters, which are respectively arranged at the four corners of the bottom of the frame 1. The universal casters have a foot brake function. The moving wheels 3 are all prior art. By setting the moving wheels 3, the entire device can be moved and fixed after being hoisted to the set area. The entire device is placed in the surrounding area of ​​the equipment to be cleaned, and the removed reverse osmosis membrane is rinsed on site. The frame 1 is welded from steel pipes, and a hoisting hole 11 is left on the top of the frame 1 to facilitate the hoisting of the device during transportation.

[0025] The cleaning system is arranged on the frame 1 and supported by the frame 1 structure. The cleaning system includes an inlet pipe assembly, an outlet pipe assembly, a water pump 41, a water tank 5 and a membrane shell 6. The membrane shell 6 is used to install the reverse osmosis membrane (or membrane element) to be cleaned. One end of the inlet pipe assembly is connected to the water pump 41, and the other end is connected to the water inlet on the membrane shell 6; one end of the outlet pipe assembly is connected to the water outlet on the membrane shell 6, and the other end is connected to the water tank 5. The water pump 41 is connected to the water tank 5, and the water tank 5 is used to hold the cleaning liquid. The cleaning liquid contains a cleaning agent for decomposing impurities in the reverse osmosis membrane, and the existing technology can be used.

[0026] Furthermore, at least two membrane shells 6 are provided, and in this embodiment, four are provided, so that four reverse osmosis membranes can be installed and cleaned at the same time; in other embodiments, the number of membrane shells 6 can be expanded. The membrane shell 6 is fixed to the frame 1 by a clamp 61.

[0027] The water inlet pipe assembly includes a water inlet main pipe 43 and a water inlet branch pipe 47. Four water inlet branches 47 are provided. One end of the water inlet main pipe 43 is connected to the water pump 41, and the other end of the water inlet main pipe 43 is connected to each water inlet branch pipe 47. A filter 42 is connected in series to the water inlet main pipe 43. The water pump 41 pumps the cleaning liquid in the water tank 5 into each membrane shell 6, and uses the filter 42 to filter the cleaning liquid and filter the dirt in the cleaning liquid (after all, the flushing liquid will flow back into the water tank 5, so it needs to be filtered). The filter 42 adopts the quick-detachable filter 42 in the prior art. A pressure gauge 45 is provided on the water inlet main pipe 43 at the downstream position of the filter 42. The degree of blockage of the filter 42 can be judged by the pressure, so as to facilitate the timely replacement of a new filter element.

[0028] A first valve 46 is provided on the water inlet manifold 47, which can be a ball valve and can be opened and closed manually. The water inlet manifold 47 is provided with an emptying valve 44, which will be mentioned later when the water pump 41 is cleaned.

[0029] A sampling valve 48 is also provided on the water inlet manifold 47 for sampling and testing during the cleaning process, and can also be used to discharge the cleaning liquid in the membrane shell 6 after the cleaning is completed.

[0030] The outlet pipe assembly includes a clean water pipe 71, a waste water pipe 72 and a confluence pipe 73. The confluence pipe 73 is connected to the water tank 5. One end of the clean water pipe 71 is connected to the clean water outlet of the membrane shell 6, and one end of the waste water pipe 72 is connected to the waste water outlet of the membrane shell 6. The other end of the clean water pipe 71 and the other end of the waste water pipe 72 are both connected to the confluence pipe 73 to converge the cleaned solution into the water tank 5. Whether the connection between the water inlet pipe assembly or the water outlet pipe assembly and the membrane shell 6 is similar to the connection with the actual reverse osmosis membrane shell 6. In this embodiment, the disassembled reverse osmosis membrane is cleaned, so it is only necessary to install the reverse osmosis membrane to be cleaned into the membrane shell 6. The plugs at both ends of the membrane shell 6 are detachable while being sealed, for example, by bolts to achieve connection with both ends of the reverse osmosis membrane.

[0031] Furthermore, a second valve 75 is provided on the waste water pipe 72, and the clean water pipe 71 is connected to each membrane shell 6. Similar to the function of the first valve 46, the first valve 46, the second valve 75, and the fourth valve 74 are open during normal cleaning. When replacing the membrane element, the three valves are closed to prevent the cleaning liquid from being discharged.

[0032] A section of the confluence pipe 73 extends into the water tank 5 to achieve connection with the water tank 5. The return pipe extends into the part below the water level in the middle of the water tank 5 to prevent the impact of backwater and make the inside of the water tank 5 more stable.

[0033] The water tank 5 is made of PE material and is corrosion-resistant. The water tank 5 is fixed on the frame 1.

[0034] An electric heater 9 is provided on one side of the water tank 5 to heat the cleaning liquid, and a heating rod of the electric heater 9 extends into the water tank 5. A thermometer is provided on the pipeline between the water tank 5 and the water pump 41 to measure the water temperature. The electric heater 9 and the thermometer are both connected to the controller, so that the temperature of the cleaning liquid can be kept within a certain range to improve the cleaning effect.

[0035] A drain port is provided at the bottom of the water tank 5, and a drain valve is provided, which is used to drain the internal liquid when cleaning the water tank 5. Further, a pagoda connector can be installed at the end of the drain valve for connecting a hose.

[0036] Furthermore, a third valve 49 is provided on the pipeline between the water tank 5 and the water pump 41. During maintenance, the third valve 49 is closed, and the first valve 46 and the drain valve 44 are closed in coordination, so that the water pump 41 and the filter 42 can be isolated, cleaned and maintained.

[0037] The pipeline between the water tank 5 and the water pump 41 is connected by two short pipes through a flange 40. This arrangement is for installing a filter gasket between the two flanges 40 to perform coarse filtering on the cleaning liquid.

[0038] A control box 2 is provided on one side of the water pump 41 . The above-mentioned controller is arranged in the control box 2 . The control box 2 is also provided with a button for controlling the start and stop of the water pump 41 .

[0039] A tool box 8 is also provided at the bottom of the frame 1 for storing wrenches and the like.

Claims

1. A reverse osmosis membrane cleaning device used in a DC power transmission project, characterized in that: It includes a frame, a cleaning system, and moving wheels. The moving wheels are arranged at the bottom of the frame, and the cleaning system is arranged on the frame. The cleaning system includes an inlet pipe assembly, an outlet pipe assembly, a water pump, a water tank and a membrane shell. The membrane shell is used to install the reverse osmosis membrane to be cleaned. One end of the inlet pipe assembly is connected to the water pump, and the other end is connected to the water inlet on the membrane shell; one end of the outlet pipe assembly is connected to the water outlet on the membrane shell, and the other end is connected to the water tank. The water suction port of the water pump is connected to the water tank, and the water tank is used to hold the cleaning liquid.

2. The reverse osmosis membrane cleaning device for direct current power transmission engineering according to claim 1 is characterized in that: The movable wheels include two fixed casters and two universal casters.

3. The reverse osmosis membrane cleaning device for DC power transmission engineering according to claim 1, characterized in that: The water inlet pipe assembly includes a water inlet main pipe and a water inlet branch. There are at least two water inlet branches. The membrane shells are provided with at least two. One end of the water inlet main pipe is connected to the water pump, and the other end of the water inlet main pipe is connected to each water inlet branch. A filter is connected in series to the water inlet main pipe.

4. The reverse osmosis membrane cleaning device for direct current power transmission engineering according to claim 3 is characterized in that: The water inlet branch is provided with a first valve.

5. The reverse osmosis membrane cleaning device for DC power transmission engineering according to claim 3 is characterized in that: The water inlet branch is provided with a drain valve.

6. The reverse osmosis membrane cleaning device for direct current power transmission engineering according to claim 1, characterized in that: The water outlet pipe assembly includes a clean water pipe, a waste water pipe and a confluence pipe, the confluence pipe is connected to the water tank, one end of the clean water pipe is connected to the clean water outlet of the membrane shell, one end of the waste water pipe is connected to the waste water outlet of the membrane shell, the other end of the clean water pipe and the other end of the waste water pipe are both connected to the confluence pipe to converge the cleaned solution into the water tank.

7. The reverse osmosis membrane cleaning device for direct current power transmission engineering according to claim 6 is characterized in that: The waste water pipe is provided with a second valve.

8. The reverse osmosis membrane cleaning device for direct current power transmission engineering according to claim 6, characterized in that: A section of the manifold extends into the water tank to achieve connection with the water tank.

9. The reverse osmosis membrane cleaning device for direct current power transmission engineering according to claim 1, characterized in that: An electric heater is arranged on one side of the water tank, and a thermometer is arranged on the pipeline between the water tank and the water pump for measuring the water temperature.

10. The reverse osmosis membrane cleaning device used in a DC power transmission project according to claim 9, characterized in that: A third valve is also provided on the pipeline between the water tank and the water pump.

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