CN117263320A - Seawater reverse osmosis purification energy recovery system and energy recovery method - Google Patents
Seawater reverse osmosis purification energy recovery system and energy recovery method Download PDFInfo
- Publication number
- CN117263320A CN117263320A CN202311371069.0A CN202311371069A CN117263320A CN 117263320 A CN117263320 A CN 117263320A CN 202311371069 A CN202311371069 A CN 202311371069A CN 117263320 A CN117263320 A CN 117263320A
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- Prior art keywords
- pipe
- reverse osmosis
- booster pump
- rotating disc
- seawater
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- 239000013535 sea water Substances 0.000 title claims abstract description 68
- 238000011084 recovery Methods 0.000 title claims abstract description 54
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 49
- 238000000746 purification Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000012141 concentrate Substances 0.000 claims abstract description 47
- 238000005096 rolling process Methods 0.000 claims abstract description 39
- 239000013505 freshwater Substances 0.000 claims abstract description 14
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 60
- 239000000243 solution Substances 0.000 claims description 38
- 239000012267 brine Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 14
- 238000010030 laminating Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of seawater treatment, in particular to a seawater reverse osmosis purification energy recovery system and an energy recovery method, comprising a reverse osmosis device, wherein the output end of the reverse osmosis device is provided with a recovery pipe and a fresh water calandria, and one end of the recovery pipe is provided with a recovery shell; the two ends of the driving shaft are provided with recoverer assemblies, and the recovery pipe is communicated with the input end of the first diversion pipe; the outer side wall of the rotating disc is provided with a plurality of notch grooves distributed in an arc array; the beneficial effects are as follows: through all being provided with the recoverer subassembly at the both ends of drive shaft, and correspond honeycomb duct one and arc groove respectively, the recoverer subassembly includes the rolling disc, and the breach groove has been seted up to the rolling disc lateral wall, and the impact is on the breach groove and drive the rolling disc rotates when concentrate flows, can apply auxiliary torque to the rotation of drive shaft to reduce the energy consumption of booster pump during operation, improved the energy recuperation efficiency in the concentrate.
Description
Technical Field
The invention relates to the technical field of seawater treatment, in particular to a seawater reverse osmosis purification energy recovery system and an energy recovery method.
Background
The reverse osmosis purification of seawater is a process for desalting seawater by using a reverse osmosis membrane.
In the prior art, seawater is generally subjected to primary filtration through a coarse and fine grating, is sent to a disc filter through water taking equipment for fine filtration, is subjected to sterilization and disinfection through an ultrafiltration membrane, is finally sent to a reverse osmosis device, fresh water is obtained at the low pressure side of the osmotic membrane by utilizing pressure difference, brine concentrate (high-concentration seawater) is obtained at the high pressure side of the osmotic membrane, the reverse osmosis device is required to carry out pressurization treatment on the seawater by an external power device (booster pump) due to the reverse osmosis opposite to the natural osmosis direction, and the brine concentrate has larger pressure and energy due to the fact that the brine concentrate is positioned at the high pressure side of the membrane, and is recovered by utilizing an energy recoverer during discharge, so that the energy consumption of the booster pump during working can be reduced.
At present, the energy recoverer in the seawater reverse osmosis purification system generally directly acts high-pressure brine concentrated solution on the low-pressure side of the booster pump to offset the high-pressure environment in the reverse osmosis device, and the mode is direct and convenient, but the energy recovery efficiency is insufficient, and the booster pump still has larger energy consumption. Therefore, the invention provides a seawater reverse osmosis purification energy recovery system and an energy recovery method for solving the problems.
Disclosure of Invention
The invention aims to provide a seawater reverse osmosis purification energy recovery system and an energy recovery method, which are used for solving the problem that the energy recovery efficiency of the energy recoverer for high-pressure brine concentrate is insufficient in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a seawater reverse osmosis purification energy recovery system comprising:
the device comprises a reverse osmosis device, wherein the output end of the reverse osmosis device is provided with a recovery pipe and a fresh water drain pipe, one end of the recovery pipe is provided with a recovery device shell, a booster pump is arranged between the recovery device shell and the reverse osmosis device, and the output end of the booster pump is provided with a booster pipe and is communicated with the input end of the reverse osmosis device;
the inner cavity of the recoverer shell is rotationally provided with a driving shaft for driving the booster pump to work, two ends of the driving shaft are respectively provided with a recoverer assembly, the outer sides of the two recoverer assemblies are respectively communicated with a first guide pipe and a second guide pipe, the second guide pipe and the second guide pipe are respectively positioned on the upper side and the lower side of the recoverer assembly at corresponding positions, and the recovery pipe is communicated with the input end of the first guide pipe;
the recoverer assembly comprises a rotating disc fixedly connected with the end part of a driving shaft, a plurality of notch grooves distributed in an arc array are formed in the outer side wall of the rotating disc, the angles of the arcs where the notch grooves are located are not more than one hundred eighty degrees, two notch grooves on the rotating disc correspond to each other, one side, away from a first guide pipe, of the rotating disc is provided with an arc-shaped sealing plate, one sides, close to the rotating disc, of the first guide pipe and the second guide pipe are provided with arc-shaped grooves, the arc-shaped sealing plate is fixedly connected with the first guide pipe, the arc-shaped sealing plate and the arc-shaped grooves are spliced into a circle, and the diameter of the circle is consistent with that of the rotating disc.
Preferably, the output intercommunication of booster pump has sea water to advance the pipe, the input intercommunication of booster pump has concentrate to advance pipe and concentrate calandria, concentrate advances the pipe and communicates with the output of honeycomb duct one, concentrate calandria communicates with the input of honeycomb duct two, the inside liquid flow direction of honeycomb duct one and honeycomb duct two is opposite, booster pipe, sea water advance pipe, concentrate advance pipe and concentrate calandria inside all to be provided with one-way solenoid valve.
Preferably, the output intercommunication of honeycomb duct one has conveyer pipe one, the input intercommunication of honeycomb duct two has conveyer pipe two, the booster pump is provided with a plurality ofly and at drive shaft both sides interval distribution in proper order, a plurality of concentrate feed tube on the booster pump all communicates with conveyer pipe one, a plurality of concentrate calandria on the booster pump all communicates with conveyer pipe two.
Preferably, the both sides of rolling disc are laminated respectively and are had closing plate one and closing plate two, and closing plate one and closing plate two all overlap the outside of locating the drive shaft, one side laminating that the rolling disc was kept away from to the closing plate one is provided with the support baffle, and supports baffle and drive shaft fixedly, support baffle fixed surface is provided with the rib floor, one side laminating that the rolling disc was kept away from to the closing plate two is provided with compresses tightly the lid, compress tightly the end fixed connection of lid through compression bolt and drive shaft.
Preferably, the width of the first guide pipe and the width of the second guide pipe are consistent with the width of the rotating disc, a sealing layer is arranged on one side surface of the first sealing plate and one side surface of the second sealing plate, which are close to the rotating disc, the diameter of the first sealing plate and the diameter of the second sealing plate are consistent and larger than the diameter of the rotating disc, a leakage-proof stop block is fixedly arranged on the inner wall of one side, far away from the arc-shaped sealing plate, of the first guide pipe and the second guide pipe, and the leakage-proof stop block is opposite to the rotating disc and is attached to the outer side wall of the rotating disc.
Preferably, both ends of the arc-shaped sealing plate are bent to form flanges, a fixing stud is fixedly arranged at the joint of the first guide pipe and the flanges, the fixing stud penetrates through the flanges and presses the flanges against the first guide pipe by a fastening nut, and a sealing gasket is arranged at the joint of the flanges and the first guide pipe.
Preferably, a sealing piston matched with the booster pump is movably arranged in the booster pump, a piston rod extending to the outer side of the input end of the booster pump is fixedly connected to one side of the sealing piston, a connecting rod is rotatably connected to the end part of the piston rod through a pin shaft, and one end of the connecting rod rotates by taking the driving shaft as the center of a circle.
Preferably, one end fixedly connected with axle sleeve of connecting rod, the inner chamber activity of axle sleeve runs through and is provided with the connecting axle, the equal fixedly connected with connecting block in both ends of connecting axle, the connecting block is the fixed cover of cam form and one end and establishes in the drive shaft outside, the drive shaft middle part is provided with the breach with a plurality of connecting rods one-to-one, the cover is equipped with a plurality of supports to its suspension in the drive shaft outside, and the support is fixed with the recoverer shell inner wall.
Preferably, the surface of the rotating disc is provided with a jack, the jack is positioned at the bottom of the notch groove, a fastening screw is arranged in the jack, and the rotating disc and the driving shaft are kept relatively fixed through the fastening screw.
The energy recovery method of the seawater reverse osmosis purification energy recovery system specifically comprises the following steps:
step one, fresh water generated by the reverse osmosis device is discharged from a fresh water discharge pipe, high-concentration brine concentrate is discharged from a recovery pipe and enters an inner cavity of a guide pipe, liquid in the inner cavity of the guide pipe flows to impact a notch groove and drives a rotating disc to rotate, power can be provided for rotation of a driving shaft, and after the brine concentrate enters an inner cavity of an input end of a sealing piston through a concentrate inlet pipe, pressure can be applied on one side of the sealing piston, meanwhile, the driving shaft rotates to push the sealing piston to move through transmission of a connecting rod and a piston rod, so that seawater at the output end of a booster pump is pressurized, and the seawater is discharged from the booster pipe;
step two, after the rotating disc in the step one rotates by one hundred eighty degrees, the inner cavity of the flow guide tube is blocked by the rotating disc, the concentrated solution of the saline water does not generate pressure on one side of the booster pump, meanwhile, the sealing piston in the inner cavity of the booster pump is pulled by the connecting rod to do reverse sliding motion, the concentrated solution is discharged from the concentrated solution discharge pipe, external seawater is sucked into the output end of the booster pump from the seawater inlet pipe, the concentrated solution is discharged from the concentrated solution discharge pipe and then enters the inner cavity of the flow guide tube, and impacts the notch groove at the position, so that the rotating disc at the position rotates, and further power is continuously provided for rotation of the driving shaft until the concentrated solution is discharged;
step three, repeating the step one and the step two, wherein in the process that the sealing piston extrudes seawater to be discharged from the pressurizing pipe, the rotating disc at the first position of the flow guide pipe rotates and provides power for the rotation of the driving shaft; in the process that the sealing piston reversely slides and sucks seawater into the inner cavity of the booster pump from the seawater inlet pipe, the rotating disc at the second position of the guide pipe rotates and provides power for the rotation of the driving shaft.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the recoverer assembly is arranged at both ends of the driving shaft and corresponds to the first diversion pipe and the arc-shaped groove respectively, the recoverer assembly comprises the rotating disc, the outer side wall of the rotating disc is provided with the notch grooves, the notch grooves on the two rotating discs correspond to each other, but the saline concentrate in the inner cavities of the first diversion pipe and the arc-shaped groove flow oppositely, the concentrate impacts on the notch grooves and drives the rotating disc to rotate when flowing, auxiliary torque can be applied to the rotation of the driving shaft, in addition, the concentrate can also provide auxiliary power for the operation of the booster pump after entering the inner cavity of the input end of the booster pump, so that the energy consumption of the booster pump in the operation is reduced, and the energy recycling efficiency of the concentrate is improved.
Drawings
FIG. 1 is a schematic top view of the overall structure of the present invention;
FIG. 2 is a schematic perspective view of the regenerator housing and booster pump configuration of the present invention;
FIG. 3 is a schematic perspective view of the internal structure of the recycler housing of the invention;
FIG. 4 is an exploded view of the construction of the recycler unit of this invention;
FIG. 5 is a schematic view of the mounting location of the rotating disc structure of the present invention;
FIG. 6 is a schematic view of a rotor disk structure in semi-section according to the present invention;
FIG. 7 is a schematic diagram of the internal fluid flow of the booster pump configuration of the present invention;
FIG. 8 is a schematic view of the connection of the connecting rod and the driving shaft structure of the present invention.
In the figure: 1. a reverse osmosis device; 2. a recovery pipe; 3. a recycler housing; 4. a booster pump; 41. a sealing piston; 42. a piston rod; 43. a pressurizing pipe; 44. a seawater inlet pipe; 45. a concentrate inlet pipe; 46. a concentrate discharge pipe; 6. fresh water calandria; 7. a drive shaft; 71. a support baffle; 72. a ribbed rib plate; 8. a connecting rod; 81. a shaft sleeve; 82. a connecting shaft; 83. a connecting block; 9. a recycler assembly; 91. a rotating disc; 92. a notch groove; 921. a fastening screw; 93. a first sealing plate; 94. a second sealing plate; 95. an arc-shaped sealing plate; 96. a flange; 97. a fastening nut; 98. a sealing layer; 99. a pressing cover; 991. a compression bolt; 10. a honeycomb duct I; 101. a honeycomb duct II; 11. an arc-shaped groove; 12. fixing a stud; 13. a first conveying pipe; 14. a second conveying pipe; 15. and a leakage-proof stop block.
Description of the embodiments
In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
Referring to fig. 1 to 8, the present invention provides a technical solution:
in a first embodiment, a seawater reverse osmosis purification energy recovery system includes:
the reverse osmosis device 1, there are recovery pipes 2 and fresh water calandria 6 at the output end of the reverse osmosis device 1, the reverse osmosis device 1 uses the structure in the prior known technology, the fresh water calandria 6 discharges purified fresh water, the recovery pipe 2 conveys the concentrated solution of high-concentration brine, one end of the recovery pipe 2 has recovery outer cover 3, there is booster pump 4 between reverse osmosis device 1 and the recovery outer cover 3, the output end of booster pump 4 has booster pipe 43 and communicates with input end of the reverse osmosis device 1, the booster pump 4 is used for sucking the sea water while working, and send into the reverse osmosis device 1 after pressurizing the sea water, in order to make the reverse osmosis work normally go on;
secondly, a driving shaft 7 for driving the booster pump 4 to work is rotatably arranged in the inner cavity of the recoverer shell 3, a chain wheel is arranged on the outer side of the driving shaft 7 and is driven to rotate by a driving motor, recoverer assemblies 9 are arranged at two ends of the driving shaft 7, a first guide pipe 10 and a second guide pipe 101 are respectively communicated with the outer sides of the two recoverer assemblies 9, the second guide pipe 101 and the second guide pipe 101 are respectively positioned at the upper side and the lower side of the recoverer assemblies 9 at corresponding positions, a recovery pipe 2 is communicated with the input end of the first guide pipe 10, and when the recovery pipe 2 conveys concentrated solution, the concentrated solution passes through the recoverer assemblies 9 at the corresponding positions, and the energy of the concentrated solution is recovered and utilized by the recoverer assemblies 9;
specifically, recoverer subassembly 9 includes the rolling disc 91 with 7 tip fixed connection of drive shaft, a plurality of breach grooves 92 that are arc array and distribute are offered to the lateral wall of rolling disc 91, and a plurality of breach grooves 92 place the angle of pitch arc not exceeding one hundred eighty degrees, when concentrate flows, concentrate can strike at rolling disc 91 surface, and because seting up of breach groove 92, concentrate strikes rolling disc 91 just can drive rolling disc 91 and produce the rotation, and because drive shaft 7 fixes in rolling disc 91 centre of a circle department, consequently, can produce more powerful torsion to drive shaft 7 when rolling disc 91 rotates, and then provide auxiliary power for the rotation of drive shaft 7, breach groove 92 on two rolling disc 91 mutually corresponds, as shown in fig. 5, a honeycomb duct 10 and honeycomb duct two 101 are used for carrying concentrate and the discharge concentrate respectively, concentrate is opposite in the flow direction of both inner chamber, consequently concentrate can strike in turn and drive two rolling disc 91, but the rolling direction of two rolling disc 91 is unanimous all the time, consequently, can both provide auxiliary power for the rotation of drive shaft 7 honeycomb duct 91, keep away from 10 and be provided with 95 to set up 10 and 95 with the arc-shaped groove of seal plate (95) and arc-shaped groove, and the arc-shaped groove of setting up with 95, and the arc-shaped groove of sealing plate is equipped with 95, and the arc-shaped groove of sealing plate is connected with 11, and is equipped with the arc-shaped groove of arc-shaped groove 91, and is used for setting up, and is in the arc-shaped groove of a 95.
In order to limit the flow direction of liquid in each pipeline of the device, the device is further provided with a seawater inlet pipe 44 communicated with the output end of the booster pump 4, a concentrated solution inlet pipe 45 and a concentrated solution discharge pipe 46 are communicated with the input end of the booster pump 4, the concentrated solution inlet pipe 45 is communicated with the output end of the first guide pipe 10, the concentrated solution discharge pipe 46 is communicated with the input end of the second guide pipe 101, the seawater inlet pipe 44 is used for conveying seawater to the inner cavity of the output end of the booster pump 4, the seawater is pressurized by the booster pump 4 and then discharged from the inner cavity of the booster pipe 43 and is fed into the inner cavity of the reverse osmosis device 1, the concentrated brine solution is conveyed through the first guide pipe 10, passes through the concentrated solution inlet pipe 45 and then enters the inner cavity of the second guide pipe 101, the liquid flow directions in the first guide pipe 10 and the second guide pipe 101 are opposite, the booster pipe 43, the seawater inlet pipe 44, the concentrated solution inlet pipe 45 and the concentrated solution discharge pipe 46 are all provided with one-way electromagnetic valves, and the one-way electromagnetic valves are used for controlling the flow direction paths of the liquid in the corresponding pipelines as shown in fig. 7.
In order to improve the efficiency of the device for pressurizing seawater, the device is further provided with a first conveying pipe 13 communicated with the output end of the first conveying pipe 10, a second conveying pipe 14 communicated with the input end of the second conveying pipe 101, a plurality of booster pumps 4 are arranged on two sides of the driving shaft 7 at intervals in sequence, the plurality of booster pumps 4 can pressurize seawater with larger flow, the pressurizing efficiency is improved, concentrate inlet pipes 45 on the plurality of booster pumps 4 are communicated with the first conveying pipe 13, concentrate outlet pipes 46 on the plurality of booster pumps 4 are communicated with the second conveying pipe 14, liquid output by the first conveying pipe 10 is conveyed into the inner cavities of the input ends of the booster pumps 4 through the first conveying pipe 13, and then is collected and uniformly conveyed into the inner cavities of the second conveying pipes 101 through the second conveying pipe 14, and the plurality of booster pumps 4 are distributed on two sides of the driving shaft 7 and work synchronously.
In order to fix a position the rolling disc 91, this application still has laminating respectively in the both sides of rolling disc 91 has sealing plate one 93 and closing plate two 94, and sealing plate one 93 and the outside of driving shaft 7 is located to the equal cover of closing plate two 94, the setting of sealing plate one 93 and closing plate two 94 is used for the rolling disc 91 location on the one hand, avoid rolling disc 91 to take place the skew along driving shaft 7 axial direction, the other hand seals notch 92, avoid the inside liquid that flows of honeycomb duct one 10 (honeycomb duct two 101) to take place to reveal, one 93 of closing plate one 93 is kept away from rolling disc 91 one side laminating and is provided with supporting baffle 71, and supporting baffle 71 is fixed with driving shaft 7, supporting baffle 71 fixed surface is provided with the rib floor 72, supporting baffle 71 is used for compressing tightly the location to closing plate one 93, the setting of rib floor 72 is used for improving supporting baffle 71 self intensity, avoid taking place the deformation, one side laminating that closing plate two 94 kept away from rolling disc 91 is provided with compressing tightly the lid 99, compressing tightly lid 99 through compressing tightly bolt 991 and driving shaft 7's tip fixed connection, as shown in fig. 4, compressing tightly bolt 991 screws back can compress tightly two sealing plates 94 to compress tightly 91 side at rolling disc 91 side, thereby improve the sealed effect of rolling disc side.
In order to further improve the leakproofness of recoverer subassembly 9, the width of this application's honeycomb duct one 10 and honeycomb duct two 101 is unanimous with the width of rolling disc 91, a side that closing plate one 93 and closing plate two 94 are close to rolling disc 91 all is provided with sealing layer 98 for further improve the leakproofness of rolling disc 91 side, the diameter of closing plate one 93 and closing plate two 94 is unanimous and is greater than the diameter of rolling disc 91, closing plate one 93 and closing plate two 94 compress tightly respectively in rolling disc 91's both sides, still compress tightly simultaneously at the surface of honeycomb duct one 10 (honeycomb duct two 101), and then can effectively improve the holistic leakproofness of recoverer subassembly 9, prevent liquid leakage, the honeycomb duct one 10 and honeycomb duct two 101 keep away from the fixed leak-proof dog 15 that is provided with of one side inner wall of arc closing plate 95, leak-proof dog 15 just is to rolling disc 91 and laminating with the lateral wall of rolling disc 91, as shown in fig. 6, the setting up of leak-proof dog 15 is used for making up the clearance between rolling disc 91 and the inner wall of honeycomb duct one 10, can effectively strike in notch groove 92 and drive rolling disc 91 when guaranteeing that the inner chamber liquid of honeycomb duct one 10 flows.
For fixed to arc sealing plate 95, the both ends of arc sealing plate 95 of this application all buckle and form flange 96, and the fixed double-screw bolt 12 that is provided with of honeycomb duct one 10 and flange 96 laminating department, fixed double-screw bolt 12 run through flange 96 and compress tightly the laminating with flange 96 and honeycomb duct one 10 by fastening nut 97, as shown in the drawing, can fix arc sealing plate 95 after fastening nut 97 screws up, and flange 96 is provided with sealed the pad with the laminating department of honeycomb duct one 10 for prevent that liquid from revealing.
In order to boost seawater, the utility model also has a sealing piston 41 movably arranged in the booster pump 4 and matched with the sealing piston, one side of the sealing piston 41 is fixedly connected with a piston rod 42 extending to the outer side of the input end of the booster pump 4, as shown in fig. 7, the sliding process of the sealing piston 41 in the inner cavity of the booster pump 4 is as follows: when the sealing piston 41 moves to the output end of the booster pump 4, the seawater is pressurized and discharged from the inner cavity of the booster pipe 43, and meanwhile, the concentrated solution is sucked into the input end of the booster pump 4 through the concentrated solution inlet pipe 45; when the sealing piston 41 moves to the input end of the booster pump 4, seawater is sucked into the output end of the booster pump 4 through the seawater inlet pipe 44, and concentrated solution is discharged through the concentrated solution discharge pipe 46, in addition, the end part of the piston rod 42 is rotationally connected with the connecting rod 8 through a pin shaft, one end of the connecting rod 8 rotates by taking the driving shaft 7 as a circle center, and the sealing piston 41 can be driven to slide back and forth through the transmission connection of the connecting rod 8 when the driving shaft 7 rotates, so that the seawater is pressurized and conveyed.
In order to be connected with connecting rod 8 and drive shaft 7, this application still has the one end fixedly connected with axle sleeve 81 at connecting rod 8, the inner chamber activity of axle sleeve 81 runs through and is provided with connecting axle 82, the equal fixedly connected with connecting block 83 in both ends of connecting axle 82, connecting block 83 is the form of cam and one end fixed cover is established in the drive shaft 7 outside, as shown in fig. 8, the during operation of drive shaft 7 can drive the one end of connecting rod 8 and rotate around drive shaft 7, drive shaft 7 middle part is provided with the breach with a plurality of connecting rods 8 one-to-one for prevent to collide between drive shaft 7 and the connecting rod 8, drive shaft 7 outside cover is equipped with a plurality of supports to its suspension, and the support is fixed with the inner wall of recoverer shell 3, the setting of support is used for fixing a position drive shaft 7, ensure that it can only rotate and can not take place the position offset.
In order to fix the rotating disc 91 with the driving shaft 7, the utility model also has the advantages that the jack is arranged on the surface of the rotating disc 91, the jack is positioned at the bottom of the notch groove 92, the fastening screw 921 is arranged in the jack, the rotating disc 91 and the driving shaft 7 are relatively fixed through the fastening screw 921, as shown in fig. 6, the rotating disc 91 can be fixed on the outer side of the driving shaft 7 by the fastening screw 921, the relative rotation of the rotating disc 91 and the driving shaft 7 is avoided, therefore, the torque force can be applied to the driving shaft 7 when the rotating disc 91 rotates, the driving shaft 7 is assisted to rotate, and the energy consumption when the driving shaft 7 rotates is reduced.
The invention also discloses an energy recovery method of the seawater reverse osmosis purification energy recovery system, which comprises the following steps:
step one, fresh water generated by the operation of the reverse osmosis device 1 is discharged from a fresh water discharge pipe 6, high-concentration brine concentrate is discharged from a recovery pipe 2 and enters an inner cavity of a first guide pipe 10, liquid in the inner cavity of the first guide pipe 10 flows to impact a notch groove 92 and drives a rotating disc 91 to rotate, power can be provided for the rotation of a driving shaft 7, and after the brine concentrate enters an inner cavity of an input end of a sealing piston 41 through a concentrate inlet pipe 45, pressure can be applied on one side of the sealing piston 41, and meanwhile, the driving shaft 7 rotates to push the sealing piston 41 to move through the transmission of a connecting rod 8 and a piston rod 42, so that the seawater at the output end of a booster pump 4 is pressurized, and the seawater is discharged from the booster pipe 43;
step two, after the rotating disc 91 in the step one rotates by one hundred eighty degrees, the inner cavity of the first guide pipe 10 is blocked by the rotating disc 91, the concentrated brine solution does not generate pressure on one side of the booster pump 4 any more, meanwhile, the sealing piston 41 in the inner cavity of the booster pump 4 is pulled by the connecting rod 8 to do reverse sliding motion, the concentrated solution is discharged from the concentrated solution discharge pipe 46, and meanwhile, external seawater is sucked into the output end of the booster pump 4 from the seawater inlet pipe 44, the concentrated solution enters the inner cavity of the second guide pipe 101 after being discharged from the concentrated solution discharge pipe 46 and impacts the notch groove 92 at the position, so that the rotating disc 91 at the position rotates, and further power is continuously provided for the rotation of the driving shaft 7 until the concentrated solution is discharged;
step three, repeating the step one and the step two, wherein the rotating disc 91 at the first 10 of the flow guiding pipe rotates and provides power for the rotation of the driving shaft 7 in the process that the sealing piston 41 extrudes the seawater to be discharged from the pressurizing pipe 43; during the reverse sliding of the sealing piston 41 and the suction of seawater from the seawater inlet pipe 44 into the inner cavity of the booster pump 4, the rotating disc 91 at the second guide pipe 101 rotates and provides power for the rotation of the driving shaft 7.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A seawater reverse osmosis purification energy recovery system, comprising:
the device comprises a reverse osmosis device (1), wherein a recovery pipe (2) and a fresh water drain pipe (6) are arranged at the output end of the reverse osmosis device (1), a recoverer shell (3) is arranged at one end of the recovery pipe (2), a booster pump (4) is arranged between the recoverer shell (3) and the reverse osmosis device (1), and a booster pipe (43) is arranged at the output end of the booster pump (4) and is communicated with the input end of the reverse osmosis device (1);
the inner cavity of the recoverer shell (3) is rotationally provided with a driving shaft (7) for driving the booster pump (4) to work, two ends of the driving shaft (7) are respectively provided with a recoverer assembly (9), the outer sides of the two recoverer assemblies (9) are respectively communicated with a first guide pipe (10) and a second guide pipe (101), the second guide pipe (101) and the second guide pipe (101) are respectively positioned on the upper side and the lower side of the recoverer assembly (9) at corresponding positions, and the recovery pipe (2) is communicated with the input end of the first guide pipe (10);
the recoverer assembly (9) comprises a rotating disc (91) fixedly connected with the end part of a driving shaft (7), a plurality of notch grooves (92) distributed in an arc array are formed in the outer side wall of the rotating disc (91), the angles of the arcs where the notch grooves (92) are located are not more than one hundred eighty degrees, two notch grooves (92) on the rotating disc (91) correspond to each other, an arc-shaped sealing plate (95) is arranged on one side, far away from the first guide tube (10), of the rotating disc (91), arc-shaped grooves (11) are formed in one sides, close to the first guide tube (10) and the second guide tube (101), of the rotating disc (91), the arc-shaped sealing plate (95) is fixedly connected with the first guide tube (10), the arc-shaped sealing plate (95) and the arc-shaped grooves (11) are spliced into a circle, and the diameter of the circle is consistent with the diameter of the rotating disc (91).
2. The seawater reverse osmosis purification energy recovery system of claim 1, wherein: the output of booster pump (4) communicates there is sea water intake pipe (44), the input of booster pump (4) communicates there is concentrate intake pipe (45) and concentrate calandria (46), concentrate intake pipe (45) and the output intercommunication of honeycomb duct one (10), concentrate calandria (46) and the input intercommunication of honeycomb duct two (101), the inside liquid flow direction of honeycomb duct one (10) and honeycomb duct two (101) is opposite, booster pipe (43), sea water intake pipe (44), concentrate intake pipe (45) and concentrate calandria (46) are inside all to be provided with one-way solenoid valve.
3. A seawater reverse osmosis purification energy recovery system according to claim 2, wherein: the utility model discloses a liquid pump, including honeycomb duct, booster pump, concentrate feed tube (45) on booster pump (4), honeycomb duct one (10) output intercommunication has conveyer pipe one (13), the input intercommunication of honeycomb duct two (101) has conveyer pipe two (14), booster pump (4) are provided with a plurality ofly and at drive shaft (7) both sides interval distribution in proper order, a plurality of concentrate feed tube (45) on booster pump (4) all communicate with conveyer pipe one (13), a plurality of concentrate calandria (46) on booster pump (4) all communicate with conveyer pipe two (14).
4. The seawater reverse osmosis purification energy recovery system of claim 1, wherein: the utility model discloses a sealing device for a motor vehicle, including rotating disc (91), closing plate one (93) and closing plate two (94) are laminated respectively to the both sides of rotating disc (91), and outside that driving shaft (7) was located to closing plate one (93) and closing plate two (94) all overlaps, one side laminating that rotating disc (91) was kept away from to closing plate one (93) is provided with support baffle (71), and support baffle (71) are fixed with driving shaft (7), support baffle (71) fixed surface is provided with ribbed floor (72), one side laminating that rotating disc (91) was kept away from to closing plate two (94) is provided with compresses tightly lid (99), compress tightly end fixed connection of lid (99) through hold-down bolt (991) and driving shaft (7).
5. The seawater reverse osmosis purification energy recovery system of claim 4, wherein: the width of honeycomb duct one (10) and honeycomb duct two (101) is unanimous with the width of rolling disc (91), one side that closing plate one (93) and closing plate two (94) are close to rolling disc (91) all is provided with sealing layer (98), the diameter of closing plate one (93) and closing plate two (94) is unanimous and is greater than the diameter of rolling disc (91), one side inner wall that arc closing plate (95) was kept away from to honeycomb duct one (10) and honeycomb duct two (101) is all fixed to be provided with leak protection dog (15), leak protection dog (15) just are to rolling disc (91) and laminating with the lateral wall of rolling disc (91).
6. The seawater reverse osmosis purification energy recovery system of claim 1, wherein: the two ends of the arc-shaped sealing plate (95) are bent to form a flange (96), a fixing stud (12) is fixedly arranged at the joint of the first guide pipe (10) and the flange (96), the fixing stud (12) penetrates through the flange (96) and tightly presses and joints the flange (96) and the first guide pipe (10) through a fastening nut (97), and a sealing gasket is arranged at the joint of the flange (96) and the first guide pipe (10).
7. The seawater reverse osmosis purification energy recovery system of claim 1, wherein: the inside activity of booster pump (4) is provided with sealed piston (41) with its looks adaptation, one side fixedly connected with of sealed piston (41) extends to piston rod (42) in booster pump (4) input outside, the tip of piston rod (42) is connected with connecting rod (8) through the round pin axle rotation, the one end of connecting rod (8) rotates with drive shaft (7) as the centre of a circle.
8. The seawater reverse osmosis purification energy recovery system of claim 7, wherein: the utility model discloses a connecting rod, including connecting rod (8), connecting rod (7), connecting rod (8), connecting rod (82), connecting rod (81) are provided with in the inner chamber activity run through of shaft sleeve (81), the equal fixedly connected with connecting block (83) in both ends of connecting rod (82), connecting block (83) are the cam form and one end fixed cover is established in drive shaft (7) outside, drive shaft (7) middle part is provided with the breach with a plurality of connecting rod (8) one-to-one, drive shaft (7) outside cover is equipped with a plurality of supports to its suspension, and the support is fixed with recoverer shell (3) inner wall.
9. The seawater reverse osmosis purification energy recovery system of claim 1, wherein: the surface of the rotating disc (91) is provided with a jack, the jack is positioned at the bottom of the notch groove (92), a fastening screw (921) is arranged in the jack, and the rotating disc (91) and the driving shaft (7) are kept relatively fixed through the fastening screw (921).
10. An energy recovery method of a seawater reverse osmosis purification energy recovery system according to any one of claims 1 to 9, characterized by: the method specifically comprises the following steps:
step one, fresh water generated by the operation of the reverse osmosis device (1) is discharged from a fresh water discharge pipe (6), high-concentration brine concentrate is discharged from a recovery pipe (2) and enters the inner cavity of a first guide pipe (10), liquid in the inner cavity of the first guide pipe (10) flows to impact a notch groove (92) and drives a rotating disc (91) to rotate, power can be provided for the rotation of a driving shaft (7), and after the brine concentrate enters the inner cavity of the input end of a sealing piston (41) through a concentrate inlet pipe (45), pressure can be applied on one side of the sealing piston (41), and meanwhile, the driving shaft (7) rotates to drive the sealing piston (41) to move through the transmission of a connecting rod (8) and a piston rod (42), so that the seawater at the output end of a booster pump (4) is pressurized, and the seawater is discharged from the booster pipe (43);
step two, after the rotating disc (91) in the step one rotates for one hundred eighty degrees, the inner cavity of the first guide pipe (10) is blocked by the rotating disc (91), the concentrated solution of the saline water does not generate pressure on one side of the booster pump (4), meanwhile, the sealing piston (41) in the inner cavity of the booster pump (4) is pulled by the connecting rod (8) to do reverse sliding movement, the concentrated solution is discharged from the concentrated solution discharge pipe (46) and simultaneously the external seawater is sucked into the output end of the booster pump (4) from the seawater inlet pipe (44), and the concentrated solution enters the inner cavity of the second guide pipe (101) after being discharged from the concentrated solution discharge pipe (46) and impacts the notch groove (92) at the position, so that the rotating disc (91) at the position rotates, and further power is continuously provided for the rotation of the driving shaft (7) until the concentrated solution is discharged;
step three, repeating the step one and the step two, wherein in the process that the sealing piston (41) extrudes seawater to be discharged from the pressurizing pipe (43), the rotating disc (91) at the first guide pipe (10) rotates and provides power for the rotation of the driving shaft (7); in the process that the sealing piston (41) slides reversely and sucks seawater into the inner cavity of the booster pump (4) from the seawater inlet pipe (44), the rotating disc (91) at the second guide pipe (101) rotates and provides power for the rotation of the driving shaft (7) continuously.
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| CN117263320B (en) | 2024-03-05 |
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