CN116081776B - Spring reset type residual pressure energy recovery device - Google Patents
Spring reset type residual pressure energy recovery device Download PDFInfo
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- CN116081776B CN116081776B CN202310374024.2A CN202310374024A CN116081776B CN 116081776 B CN116081776 B CN 116081776B CN 202310374024 A CN202310374024 A CN 202310374024A CN 116081776 B CN116081776 B CN 116081776B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- 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
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Abstract
The application discloses spring return formula residual pressure can recovery unit relates to energy recuperation technical field, including rotatable core, two commutation modules and recovery module, wherein recovery module includes recovery unit, high-pressure dense sea water entry joint, low-pressure dense sea water exit joint, high-pressure sea water exit joint and low-pressure sea water entry joint, and recovery unit includes piston logical chamber, sealing baffle and piston assembly, and piston assembly includes connecting rod, first piston, second piston and elastic component. The piston through cavity can be switched between a state of communicating the high-pressure concentrated seawater inlet connector with the high-pressure seawater outlet connector and a state of communicating the low-pressure concentrated seawater outlet connector with the low-pressure seawater inlet connector through rotation of the core body. The piston is pushed by the high-pressure concentrated seawater to pressurize the low-pressure seawater, so that the residual pressure energy is recycled, the recovery of the elastic piece is utilized to realize the suction of the low-pressure seawater, the energy consumption of the pump is reduced, and the energy recovery efficiency is improved.
Description
Technical Field
The application relates to the technical field of energy recovery, in particular to a spring reset type residual pressure energy recovery device.
Background
Among the various sea water desalination technologies invented today, reverse osmosis using reverse osmosis membrane is the most widely used method because of its advantages of simple equipment, easy maintenance and modularized equipment.
The pressure of the concentrated seawater discharged in the reverse osmosis seawater desalination process is usually as high as 5.0-6.5 MPa, and the direct release of the pressure energy of the concentrated seawater can cause great waste. It is counted that the loss caused by the direct release of the pressure energy of the concentrated seawater is about 30% -50% of the total cost of the produced water, so that the installation of the residual pressure energy recovery device is necessary.
The existing residual pressure energy recovery device mainly works in two modes, namely a hydraulic turbine mode and a positive displacement mode. The positive displacement residual pressure energy recovery device is used for recovering residual pressure energy based on pressure transmission, and the device is required to provide additional pressure through a pump to complete residual pressure energy recovery, so that a certain amount of electric energy is required to be consumed for working, a certain recovery cost is increased, and recovery efficiency is reduced.
Disclosure of Invention
Accordingly, the present application is directed to a spring return type residual pressure energy recovery device, which reduces energy consumption of a pump and improves energy recovery efficiency.
In order to achieve the technical purpose, the application provides a spring reset type residual pressure energy recovery device, which comprises a core body, two phase-change modules and a recovery module;
the core body can be rotatably arranged;
the two phase change modules are fixed at two ends of the core body along the direction of the rotation center line of the core body and are in sealing contact with the core body;
the recovery module comprises a recovery unit, a high-pressure concentrated seawater inlet connector, a low-pressure concentrated seawater outlet connector, a high-pressure seawater outlet connector and a low-pressure seawater inlet connector;
the high-pressure seawater outlet connector is provided with a pressure limiting valve;
the recovery unit comprises a piston through cavity, a sealing baffle and a piston assembly;
the piston through cavity is arranged on the core body along the direction of the rotation center line of the core body;
the sealing baffle is fixed in the piston through cavity and is used for separating the piston through cavity into two cavities along the direction of the rotation center line of the core body;
the piston assembly comprises a connecting rod, a first piston, a second piston and an elastic piece;
the connecting rod movably penetrates through the sealing baffle plate along the direction of the rotation center line of the core body, one end of the connecting rod is connected with the first piston, and the other end of the connecting rod is connected with the second piston;
the elastic piece is connected between the first piston and the sealing baffle plate or between the second piston and the sealing baffle plate;
the high-pressure concentrated seawater inlet connector and the low-pressure concentrated seawater outlet connector are arranged on one phase-change module and can be respectively connected and communicated with one end of the piston through cavity;
the high-pressure seawater outlet connector and the low-pressure seawater inlet connector are arranged on the other phase-change module and can be respectively connected and communicated with the other end of the piston through cavity;
the piston through cavity can be switched between a state that the two ends of the piston through cavity are respectively communicated with the high-pressure concentrated seawater inlet connector and the high-pressure seawater outlet connector and a state that the two ends of the piston through cavity are respectively communicated with the low-pressure concentrated seawater outlet connector and the low-pressure seawater inlet connector through rotation of the core body.
Further, the high pressure concentrate inlet fitting and the low pressure concentrate outlet fitting are arranged on a side of the second piston facing away from the first piston;
the high-pressure seawater outlet joint and the low-pressure seawater inlet joint are arranged on one side of the first piston, which is away from the second piston;
the elastic piece is connected between the second piston and the sealing baffle.
Further, the number of the recovery units is 2n, and n is more than or equal to 1;
2n recovery units are uniformly distributed around the circumference of the rotation center line of the core body;
the number of the high-pressure concentrated seawater inlet connector, the number of the low-pressure concentrated seawater outlet connector, the number of the high-pressure seawater outlet connector and the number of the low-pressure seawater inlet connectors are m, and m=n;
when half of the 2n piston through cavities are in a state that two ends of the piston through cavities are respectively communicated with the high-pressure concentrated seawater inlet connector and the high-pressure seawater outlet connector, the other half of the piston through cavities are in a state that two ends of the piston through cavities are communicated with the low-pressure concentrated seawater outlet connector and the low-pressure seawater inlet connector.
Further, the core body comprises a rotating shaft and a core body;
the core body is detachably arranged on the rotating shaft and is in synchronous running fit with the rotating shaft.
Further, the phase-change module comprises a phase-change disc and an interface end disc;
the phase-change disc is provided with a plurality of first communication holes which can be connected and conducted with the piston through cavity port;
the high-pressure concentrated seawater inlet connector and the low-pressure concentrated seawater outlet connector are connected and communicated with the first communication holes on one phase change module in a one-to-one correspondence manner;
the high-pressure seawater outlet connector and the low-pressure seawater inlet connector are connected and communicated with the first communication holes on the other phase change module in a one-to-one correspondence manner;
the phase-change disc is detachably arranged on the rotating shaft, is in sealing contact with the core body and synchronously rotates;
the interface end disc is sleeved on the rotating shaft, is fixed on one side of the phase change disc, which is far away from the core body, and is in sealing contact with the phase change disc;
a bearing is connected between the interface end disc and the rotating shaft;
the interface end disc is provided with a plurality of second communication holes which are connected and conducted with the first communication holes in a one-to-one correspondence manner;
the high-pressure concentrated seawater inlet connectors and the low-pressure concentrated seawater outlet connectors are arranged on the second communication holes of one phase change module in a one-to-one correspondence manner;
the high-pressure seawater outlet connectors and the low-pressure seawater inlet connectors are arranged on the second communication holes of the other phase change module in a one-to-one correspondence mode.
Further, the first communication hole is an arc hole.
Further, an annular protrusion which is contacted and abutted with the bearing fixing ring is arranged on one surface of the phase change plate, facing the bearing, so that a gap is formed between the rotating ring of the bearing and the phase change plate.
Further, the rotating shaft is a threaded shaft;
the phase change module further comprises a nut in threaded fit with the rotating shaft;
the nut is sleeved on the rotating shaft and is contacted and abutted with the fixing ring of the bearing, so that the phase-change plate and the core body are fastened together.
Further, a washer is arranged between the nut and the fixed ring of the bearing.
Further, the elastic piece is a spring and is sleeved on the connecting rod.
According to the spring reset type residual pressure energy recovery device, when the core body rotates to the state that the two ends of the piston through cavity are respectively communicated with the high-pressure concentrated seawater inlet connector and the high-pressure seawater outlet connector, high-pressure concentrated seawater enters the cavity on one side of the second piston in the piston through cavity through the high-pressure concentrated seawater inlet connector to push the second piston (for example) to move, meanwhile, the connecting rod drives the first piston to move and enables the elastic piece to deform, and then low-pressure seawater in the cavity on one side of the first piston is pressurized into high-pressure seawater, so that the recovery and utilization of the residual pressure energy of the high-pressure concentrated seawater are realized. The high-pressure seawater in the cavity after pressurization is discharged from the high-pressure seawater outlet connector after reaching the preset pressure of the pressure limiting valve, and meanwhile, the high-pressure concentrated water in the other cavity is decompressed to be changed into low-pressure concentrated seawater. When the core body rotates to a state that two ends of the piston through cavity are respectively communicated with the low-pressure concentrated seawater outlet connector and the low-pressure seawater inlet connector, the elastic piece in a deformed state pushes the second piston to move reversely when reset, the low-pressure concentrated seawater after pressure relief is discharged from the low-pressure concentrated seawater outlet connector, and meanwhile, the connecting rod pulls the first piston to move to suck the low-pressure seawater from the low-pressure seawater inlet connector, so that preparation is made for recycling of the next residual pressure energy.
The piston is pushed by the high-pressure concentrated seawater to deform the elastic piece, the low-pressure seawater is pressurized, the recycling of the residual pressure energy of the high-pressure concentrated seawater is realized, and the piston is driven to suck the low-pressure seawater by the reset of the elastic piece. Compared with the traditional residual pressure energy recovery device, the device does not need to install an additional pump, reduces the energy consumption of the pump, and improves the energy recovery efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a first cross-sectional view of a spring return residual pressure energy recovery device provided herein;
FIG. 2 is a second cross-sectional view of a spring return residual pressure energy recovery device provided herein;
FIG. 3 is a diagram of an interface end disc structure of a spring return type residual pressure energy recovery device provided in the present application;
fig. 4 is a schematic diagram of a mating structure of a phase change disc and a recovery unit of a spring return type residual pressure energy recovery device provided in the present application;
FIG. 5 is a schematic diagram of the spring return type residual pressure energy recovery device according to the present disclosure in a first phase state;
FIG. 6 is a schematic diagram of the spring return residual pressure energy recovery device according to the present disclosure in a second phase state;
in the figure: 1. a core; 11. a core body; 12. a rotating shaft; 2. a recovery unit; 21. the piston is communicated with the cavity; 22. a first piston; 23. a sealing baffle; 24. a connecting rod; 25. an elastic member; 26. a second piston; 3. a commutation module; 31. a commutation disc; 311. a first communication hole; 312. an annular protrusion; 32. an interface end plate; 321. a second communication hole; 33. a bearing; 34. a screw cap; 35. a gasket; 41. a high pressure seawater outlet fitting; 411. a pressure limiting valve; 42. a high pressure concentrated seawater inlet fitting; 43. a low pressure seawater inlet fitting; 44. a low-pressure concentrated seawater outlet joint.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the embodiments of the present application, are within the scope of the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, 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, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
The embodiment of the application discloses a spring reset type residual pressure energy recovery device.
Referring to fig. 1, 2, 5 and 6, an embodiment of a spring return type residual pressure energy recovery device provided in an embodiment of the present application includes:
the device comprises a core body 1, two phase change modules 3 and a recovery module.
The core 1 is rotatably provided, and thus rotation control can be achieved by a rotary motor.
The two commutation modules 3 are fixed at two ends of the core 1 along the direction of the rotation center line of the core 1 and are in sealing contact with the core 1.
In the case of a recovery module design, this comprises a recovery unit 2, a high pressure concentrate inlet connection 42, a low pressure concentrate outlet connection 44, a high pressure concentrate outlet connection 41 and a low pressure concentrate inlet connection 43.
The recovery unit 2 comprises a piston through chamber 21, a sealing baffle 23 and a piston assembly.
The piston through cavity 21 is arranged on the core 1 along the direction of the rotation center line of the core 1, and can rotate around the rotation center line of the core 1 along with the rotation of the core 1. In terms of forming the piston through cavity 21, a through cavity may be formed on the core 1 to form the piston through cavity 21, or a piston cylinder is mounted on the core 1, and the through cavities inside the piston cylinder penetrating through the two ends of the core 1 form the piston through cavity 21, which is not particularly limited.
The sealing baffle plate 23 is fixed in the piston through cavity 21 and is used for separating the piston through cavity 21 into two cavities along the rotation center line direction of the core body 1, the sealing baffle plate 23 can be in a ring-shaped structure, and is fixed in the middle position of the piston through cavity 21, so that the installation and limiting effects on a piston assembly are achieved.
In the case of a piston assembly design, the connecting rod 24, the first piston 22, the second piston 26 and the elastic member 25 are included. The connecting rod 24 movably penetrates through the sealing baffle 23 along the direction of the rotation center line of the core body 1, one end of the connecting rod is connected with the first piston 22, and the other end of the connecting rod is connected with the second piston 26; the first piston 22 and the second piston 26 should be in close contact with the inner wall of the piston through cavity 21 to achieve a sealing effect so as to isolate different fluids, and the piston structure can refer to the existing piston structure design without limitation. The elastic member 25 may be connected between the first piston 22 and the sealing shutter 23 or between the second piston 26 and the sealing shutter 23.
The high-pressure concentrated seawater inlet connector 42 and the low-pressure concentrated seawater outlet connector 44 are mounted on one phase-change module 3 and can be respectively connected and communicated with one end of the piston through cavity 21. The high-pressure seawater outlet connector 41 and the low-pressure seawater inlet connector 43 are mounted on the other phase-change module 3 and can be respectively connected and communicated with the other end of the piston through cavity 21.
The piston through chamber 21 is switched between a state in which both ends thereof are respectively connected to the high-pressure concentrated seawater inlet tap 42 and the high-pressure seawater outlet tap 41, and a state in which both ends thereof are respectively connected to the low-pressure concentrated seawater outlet tap 44 and the low-pressure seawater inlet tap 43 by rotation of the core body 1.
The state that the two ends of the piston through cavity 21 are respectively communicated with the high-pressure concentrated seawater inlet joint 42 and the high-pressure seawater outlet joint 41 is taken as a first phase state, and the state that the two ends of the piston through cavity 21 are respectively communicated with the low-pressure concentrated seawater outlet joint 44 and the low-pressure seawater inlet joint 43 is taken as a second phase state, so that the piston through cavity 21 can be switched between the first phase state and the second phase state through the rotation of the core body 1.
Specifically, as shown in fig. 1 and 2, the high-pressure concentrated seawater inlet tap 42 and the low-pressure concentrated seawater outlet tap 44 may be disposed on the side of the second piston 26 facing away from the first piston 22, and then the high-pressure seawater outlet tap 41 and the low-pressure seawater inlet tap 43 are disposed on the side of the first piston 22 facing away from the second piston 26; in the case of a left-right distribution, since the first piston 22 and the second piston 26 are disposed in a left-right distribution, the high-pressure concentrated seawater inlet tap 42 and the low-pressure concentrated seawater outlet tap 44 are disposed on the right side, and the high-pressure seawater outlet tap 41 and the low-pressure seawater inlet tap 43 are disposed on the left side, the corresponding elastic member 25 may be connected between the second piston 26 and the sealing plate 23. Taking this distribution case as an example, the specific workflow is as follows:
as shown in fig. 5, when the piston through cavity 21 is in the first phase state, high-pressure concentrated seawater enters the right side of the second piston 26 of the piston through cavity 21 through the high-pressure concentrated seawater inlet connector 42 to push the second piston 26 to move, and meanwhile, the connecting rod 24 drives the first piston 22 to move leftwards and the elastic piece 25 is compressed, so that low-pressure seawater in the left side of the first piston 22 is pressurized into high-pressure seawater, and the recycling of residual pressure energy of the high-pressure concentrated seawater is realized. The high-pressure seawater in the pressurized cavity reaches the preset pressure of the pressure limiting valve 411 and is discharged from the high-pressure seawater outlet connector 41, and the high-pressure concentrated water in the right side of the second piston 26 is decompressed to become low-pressure concentrated seawater.
As shown in fig. 6, the motor drives the core 1 to rotate, when the piston through cavity 21 is switched from the first phase state to the second phase state, the elastic member 25 in the compressed state resets to push the second piston 26 to move rightward, the low-pressure concentrated seawater obtained after pressure release is pushed to the low-pressure concentrated seawater outlet joint 44 to be discharged, the second piston 26 moves while pulling the first piston 22 to move through the connecting rod 24, the low-pressure seawater is sucked from the low-pressure seawater inlet joint 43, and the next residual pressure energy is ready for recycling.
The application utilizes high-pressure concentrated seawater to push the piston so that the elastic piece 25 deforms, pressurizes low-pressure seawater, realizes recycling of residual pressure energy of the high-pressure concentrated seawater, and utilizes reset of the elastic piece 25 to drive the piston to pump in the low-pressure seawater. Compared with the traditional residual pressure energy recovery device, the device does not need to install an additional pump, reduces the energy consumption of the pump, and improves the energy recovery efficiency.
The foregoing is an embodiment one of a spring return type residual pressure energy recovery device provided in the embodiments of the present application, and the following is an embodiment two of a spring return type residual pressure energy recovery device provided in the embodiments of the present application, specifically please refer to fig. 1 to 6.
Based on the scheme of the first embodiment:
further, in order to improve the recovery efficiency, the number of the recovery units 2 may be 2n, where n is greater than or equal to 1 and is a natural number, that is, the number of the recovery units 2 may be a multiple of 2, and then the number of the 2n recovery units 2 is uniformly distributed around the circumference of the rotation center line of the core 1, that is, the number of the 2n piston through cavities 21 is uniformly distributed around the circumference of the rotation center line of the core 1.
Correspondingly, the number of the high-pressure concentrated seawater inlet connector 42, the low-pressure concentrated seawater outlet connector 44, the high-pressure seawater outlet connector 41 and the low-pressure seawater inlet connector 43 is m, and m=n. When half of the 2n piston through chambers 21 are in a state that both ends of the piston through chambers 21 are respectively communicated with the high-pressure concentrated seawater inlet connector 42 and the high-pressure seawater outlet connector 41, the other half of the piston through chambers 21 are in a state that both ends of the piston through chambers are respectively communicated with the low-pressure concentrated seawater outlet connector 44 and the low-pressure seawater inlet connector 43.
Taking four recovery units 2 as an example, the number of the high-pressure concentrated seawater inlet connectors 42, the low-pressure concentrated seawater outlet connectors 44, the high-pressure seawater outlet connectors 41 and the low-pressure seawater inlet connectors 43 is two, the circumferences of the four piston through cavities 21 are uniformly arranged on the core body 1, the two high-pressure concentrated seawater inlet connectors 42 and the two low-pressure concentrated seawater outlet connectors 44 are arranged in a staggered manner around the rotation center line of the core body 1, and the two high-pressure seawater outlet connectors 41 and the two low-pressure seawater inlet connectors 43 are also arranged in a staggered manner around the rotation center line of the core body 1. When the piston through cavities 21 in the two recovery units 2 are in a first phase state, the piston through cavities 21 in the other two recovery units 2 are also in a second phase state, so that the first phase state and the second phase state are carried out simultaneously, namely, the first phase state and the second phase state can be switched once when the core body 1 rotates by 90 degrees, further, the elastic piece 25 can be deformed and recovered once when the core body 1 rotates by 180 degrees, the recovery unit 2 can complete one working cycle, the two working cycles can be completed when the core body rotates by one circle, and the efficiency is better improved.
Further, regarding the structural design of the core 1, the core comprises a rotating shaft 12 and a core body 11, the core body 11 is detachably mounted on the rotating shaft 12 and is synchronously matched with the rotating shaft 12 in a rotating manner, the piston through cavity 21 is arranged on the core body 11, and the central axis of the rotating shaft 12 also forms the rotation center line of the core 1. The rotating shaft 12 can be connected with a driving wheel of a motor through a belt so as to be driven by the motor to rotate, and further drive the core body 11 to rotate. The core body 11 can be in a ring barrel structure, is entirely sleeved on the rotating shaft 12 and is driven by the rotating shaft 12 to realize rotation; of course, the core body 11 may be a single box structure directly fixed on the rotating shaft 12, and the number of the core body is the same as the number of the recovery units 2, that is, the number of the recovery units 2, and the number of the core bodies 11 is not limited in particular.
Further, the commutation module 3 includes a commutation disc 31 and an interface end disc 32.
The phase-change disc 31 is provided with a plurality of first communication holes 311 which can be connected and communicated with the ports of the piston through cavity 21; the high-pressure concentrated seawater inlet joint 42 and the low-pressure concentrated seawater outlet joint 44 are connected and communicated with the first communication holes 311 on one phase change module 3 in a one-to-one correspondence manner; the high-pressure seawater outlet connector 41 and the low-pressure seawater inlet connector 43 are connected and communicated with the first communication holes 311 on the other phase change module 3 in a one-to-one correspondence.
Taking the case of the rotating shaft 12 as an example, the phase-change disc 31 is detachably sleeved on the rotating shaft 12, and is in sealing contact with the core 1 and rotates synchronously.
The interface end plate 32 is sleeved on the rotating shaft 12, and is fixed on one side of the phase change plate 31 far away from the core body 11, and is in sealing contact with the phase change plate 31.
A bearing 33 is connected between the interface end plate 32 and the rotating shaft 12, so that the interface end plate 32 and the phase change plate 31 can rotate smoothly. The middle of the interface end plate 32 is provided with a bearing hole to facilitate the installation of the bearing 33. The interface end plate 32 and the phase change plate 31 are matched, so that the interface shapes of the low-pressure seawater inlet connector 43, the high-pressure seawater outlet connector 41, the low-pressure concentrated seawater inlet connector and the high-pressure concentrated seawater outlet connector are not adjusted by following the shape of the first communication hole 311 in the phase change plate 31. In addition, by providing the interface end plate 32, the low-pressure seawater inlet connector 43, the high-pressure seawater outlet connector 41, the low-pressure concentrated seawater inlet connector and the high-pressure concentrated seawater outlet connector are more convenient to install and arrange.
The interface end plate 32 is provided with a plurality of second communication holes 321 which are connected and conducted with the first communication holes 311 in a one-to-one correspondence manner; the high-pressure concentrated seawater inlet header 42 and the low-pressure concentrated seawater outlet header 44 are mounted on the second communication hole 321 of one of the phase change modules 3 in one-to-one correspondence. The high-pressure seawater outlet header 41 and the low-pressure seawater inlet header 43 are mounted on the second communication hole 321 of the other phase change module 3 in one-to-one correspondence.
Further, the first communicating hole 311 is preferably designed as an arc hole, which can prolong the available time of fluid pressure transmission in the piston through cavity 21, so that the pressure transmission in the fluid is more sufficient, and at the same time, the neutral time is shortened, wherein the neutral time refers to the residence time of the pressure limiting valve 411, the low-pressure seawater inlet connector 43, the high-pressure seawater outlet connector 41, the low-pressure concentrated seawater inlet connector and the high-pressure concentrated seawater outlet connector in the parts between the first communicating holes 311 in the phase change plates 31 at two sides of the core 1 during the rotation of the core 1, and the residual pressure energy recovery efficiency can be improved by shortening the neutral time.
Specifically, the piston through cavity 21 may be a cylindrical cavity, and then the two ports of the piston through cavity are circular ports, the first communication hole 311 may be an arc hole with a size larger than that of the cylindrical through cavity port, the second communication hole 321 may be a circular hole matched with the cylindrical through hole port, the fluid from the piston through cavity 21 flows through the first communication hole 311 and then flows through the second communication hole 321, and the arc hole design of the first communication hole 311 can also prolong the pressure transmission time of the fluid.
In addition, in design, it should be noted that the size of the gap portion between the first communication holes 311 is larger than the size of the port of the piston through cavity 21 and the size of the second communication hole 321, so as to ensure that the gap portion can completely block the port of the piston through cavity 21 and the second communication hole 321, and avoid communication liquid channeling between two adjacent piston through cavities 21. The gap between the second communication holes 321 prevents the fluid from flowing out of the first communication holes 311 during the rotation of the core 1, thereby preventing leakage.
Further, an annular protrusion 312 is provided on a surface of the commutator disk 31 facing the bearing 33, which abuts against the fixed ring of the bearing 33, so that a gap is formed between the rotating ring of the bearing 33 and the commutator disk 31. Contact wear between the disc 31 and the bearing 33 can thus be avoided.
Further, the shaft 12 may be designed as a threaded shaft, may be designed with a partially threaded shaft section or a fully threaded shaft section, and is not limited thereto. Correspondingly, the commutation module 3 further comprises two nuts 34 in threaded engagement with the shaft 12, and the number of the nuts 34 is preferably two; the nut 34 is sleeved on the rotating shaft 12 and contacts and abuts against the fixing ring of the bearing 33, so that the phase change disc 31 and the core body 11 are fastened together. The arrangement of the screw cap 34 also makes the whole installation and cooperation more convenient and maintenance more convenient.
In this application, the interface end plate 32 is in sealing contact with the phase-change plate 31 but is in relative rotation fit, and the core body 11 is in sealing contact with the phase-change plate 31 but is in synchronous rotation fit, the interface end plate 32 is connected with the corresponding seawater inlet and outlet connector and is in a fixed state, and when the core body 1 and the phase-change plate 31 rotate, the interface end plate 32 also rotates relatively. The core 1 and the phase-change disc 31 can be synchronously matched with the rotating shaft 12 in a rotating way through key slot matching, and the design of detachable axial direction is also satisfied, and the design is not limited in particular.
Further, a washer 35 is further provided between the nut 34 and the retainer ring of the bearing 33, and the washer 35 may be made of an elastic material, without limitation.
Further, the elastic member 25 may be a spring, and is sleeved on the connecting rod 24.
The foregoing describes a spring return type residual pressure energy recovery device provided in the present application in detail, and those skilled in the art, based on the ideas of the embodiments of the present application, will change the specific embodiments and application ranges, so that the disclosure should not be construed as limiting the present application.
Claims (5)
1. The spring reset type residual pressure energy recovery device is characterized by comprising a core body (1), two phase-change modules (3) and a recovery module;
the core body (1) can be rotatably arranged;
the two commutation modules (3) are fixed at two ends of the core body (1) along the direction of the rotation center line of the core body (1) and are in sealing contact with the core body (1);
the recovery module comprises a recovery unit (2), a high-pressure concentrated seawater inlet joint (42), a low-pressure concentrated seawater outlet joint (44), a high-pressure seawater outlet joint (41) and a low-pressure seawater inlet joint (43);
the high-pressure seawater outlet joint (41) is provided with a pressure limiting valve (411);
the recovery unit (2) comprises a piston through cavity (21), a sealing baffle plate (23) and a piston assembly;
the piston through cavity (21) is arranged on the core body (1) along the direction of the rotation center line of the core body (1);
the sealing baffle (23) is fixed in the piston through cavity (21) and is used for separating the piston through cavity (21) into two cavities along the rotation center line direction of the core body (1);
the piston assembly comprises a connecting rod (24), a first piston (22), a second piston (26) and an elastic piece (25);
the connecting rod (24) movably penetrates through the sealing baffle (23) along the rotation center line direction of the core body (1), one end of the connecting rod is connected with the first piston (22), and the other end of the connecting rod is connected with the second piston (26);
the elastic piece (25) is connected between the first piston (22) and the sealing baffle (23) or between the second piston (26) and the sealing baffle (23);
the high-pressure concentrated seawater inlet connector (42) and the low-pressure concentrated seawater outlet connector (44) are arranged on one phase-change module (3) and are respectively connected and communicated with one end of the piston through cavity (21);
the high-pressure seawater outlet connector (41) and the low-pressure seawater inlet connector (43) are arranged on the other phase-change module (3) and are respectively connected and communicated with the other end of the piston through cavity (21);
the piston through cavity (21) can be switched between a state that the two ends of the piston through cavity are respectively communicated with the high-pressure concentrated seawater inlet connector (42) and the high-pressure seawater outlet connector (41) and a state that the two ends of the piston through cavity are respectively communicated with the low-pressure concentrated seawater outlet connector (44) and the low-pressure seawater inlet connector (43) through rotation of the core body (1);
the core body (1) comprises a rotating shaft (12) and a core body (11);
the core body (11) is detachably arranged on the rotating shaft (12) and is synchronously matched with the rotating shaft (12) in a rotating way;
the phase change module (3) comprises a phase change disc (31) and an interface end disc (32);
the phase-change disc (31) is provided with a plurality of first communication holes (311) which are connected and communicated with the ports of the piston through cavity (21);
the high-pressure concentrated seawater inlet connector (42) and the low-pressure concentrated seawater outlet connector (44) are connected and conducted in one-to-one correspondence with the first communication holes (311) on one phase change module (3);
the high-pressure seawater outlet connector (41) and the low-pressure seawater inlet connector (43) are connected and communicated with the first communication holes (311) on the other phase change module (3) in a one-to-one correspondence manner;
the phase-change disc (31) is detachably arranged on the rotating shaft (12), and is in sealing contact with the core body (1) and synchronously rotates;
the interface end disc (32) is sleeved on the rotating shaft (12) and is fixed on one side of the phase change disc (31) far away from the core body (11) and is in sealing contact with the phase change disc (31);
a bearing (33) is connected between the interface end disc (32) and the rotating shaft (12);
the interface end disc (32) is provided with a plurality of second communication holes (321) which are connected and conducted with the first communication holes (311) in a one-to-one correspondence manner;
the high-pressure concentrated seawater inlet connector (42) and the low-pressure concentrated seawater outlet connector (44) are correspondingly arranged on the second communication hole (321) of one phase change module (3) one by one;
the high-pressure seawater outlet connectors (41) and the low-pressure seawater inlet connectors (43) are correspondingly arranged on the second communication holes (321) of the other phase-change module (3) one by one;
the first communication hole (311) is an arc-shaped hole;
an annular bulge (312) which is contacted and abutted with the fixed ring of the bearing (33) is arranged on one surface of the phase change disc (31) facing the bearing (33), so that a gap is formed between the rotating ring of the bearing (33) and the phase change disc (31);
the rotating shaft (12) is a threaded shaft;
the commutation module (3) further comprises a nut (34) in threaded fit with the rotating shaft (12);
the nut (34) is sleeved on the rotating shaft (12) and is contacted and abutted against the fixed ring of the bearing (33), so that the phase-change disc (31) and the core body (11) are fastened together.
2. A spring return residual pressure energy recovery device according to claim 1, characterized in that the high pressure concentrate seawater inlet fitting (42) and the low pressure concentrate seawater outlet fitting (44) are arranged on the side of the second piston (26) facing away from the first piston (22);
-the high-pressure seawater outlet fitting (41) and the low-pressure seawater inlet fitting (43) are arranged on the side of the first piston (22) facing away from the second piston (26);
the elastic piece (25) is connected between the second piston (26) and the sealing baffle (23).
3. The spring return type residual pressure energy recovery device according to claim 1, wherein the number of the recovery units (2) is 2n, and n is more than or equal to 1;
2n recovery units (2) are uniformly distributed around the circumference of the rotation center line of the core body (1);
the number of the high-pressure concentrated seawater inlet connectors (42), the number of the low-pressure concentrated seawater outlet connectors (44), the number of the high-pressure seawater outlet connectors (41) and the number of the low-pressure seawater inlet connectors (43) are m, and m=n;
when half of the 2n piston through cavities (21) are in a state that two ends of the piston through cavities (21) are respectively communicated with the high-pressure concentrated seawater inlet connector (42) and the high-pressure seawater outlet connector (41), the other half of the piston through cavities (21) are in a state that two ends of the piston through cavities are communicated with the low-pressure concentrated seawater outlet connector (44) and the low-pressure seawater inlet connector (43).
4. The spring return type residual pressure energy recovery device according to claim 1, wherein a washer (35) is further provided between the nut (34) and the retainer ring of the bearing (33).
5. The spring return type residual pressure energy recovery device according to claim 1, wherein the elastic member (25) is a spring and is sleeved on the connecting rod (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310374024.2A CN116081776B (en) | 2023-04-10 | 2023-04-10 | Spring reset type residual pressure energy recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310374024.2A CN116081776B (en) | 2023-04-10 | 2023-04-10 | Spring reset type residual pressure energy recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116081776A CN116081776A (en) | 2023-05-09 |
| CN116081776B true CN116081776B (en) | 2023-06-27 |
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| CN202310374024.2A Active CN116081776B (en) | 2023-04-10 | 2023-04-10 | Spring reset type residual pressure energy recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100963557B1 (en) * | 2008-06-11 | 2010-06-15 | 한국기계연구원 | Self reciprocated energy recovery device |
| CN101817573B (en) * | 2010-04-09 | 2012-12-12 | 杭州佳湖科技有限公司 | Electric double-action energy recycling device |
| CN206770143U (en) * | 2017-04-04 | 2017-12-19 | 赵序良 | A kind of hydraulic pumping unit for being used for energy and Sewage treatment |
| CN206988036U (en) * | 2017-04-30 | 2018-02-09 | 浙江大学 | A kind of desalinization energy regenerating and boost in pressure integrative machine |
| CN112648106A (en) * | 2019-10-10 | 2021-04-13 | 天津工业大学 | Beta type stirling drive free piston seawater desalination pressurization system |
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