Pressure exchanger

Abstract

The utility model relates to a pressure exchanger, which comprises a rotor, a sleeve piece, a first end cover and a second end cover, the rotor is cylindrical, a plurality of conversion channels parallel to the axis of the rotor are formed on the rotor, and a magnetic part is arranged in the rotor; a rotating inner cavity is formed in the sleeve part, the rotor is rotatably connected in the rotating inner cavity, and an electromagnetic coil is arranged on the sleeve part and connected with a power supply; the first end cover and the second end cover are located at the two ends of the rotor respectively, after the electromagnetic coil on the sleeve piece is powered on, a rotating magnetic field is formed in the sleeve piece, and the rotor rotates in the rotating magnetic field formed by the sleeve piece under the action of the magnetic part so as to overcome resistance formed by salt crystallization to the rotor and assist normal starting of the rotor. When the power supply piece is powered off, the rotor is continuously driven by fluid at the inlet to continuously rotate, and normal work of the pressure exchanger is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy recovery, and specifically relates to a pressure exchanger. Background Art

[0002] In recent years, with the rapid development of energy recovery technology and the continuous improvement of its device efficiency, the water production energy consumption of reverse osmosis seawater desalination systems has been greatly reduced. The pressure exchanger, an energy recovery device, has now become one of the essential equipment in seawater or brackish water reverse osmosis desalination systems.

[0003] The pressure exchanger boosts part of the energy in the high-pressure brine discharged from the reverse osmosis module into low-pressure seawater for reverse osmosis, which can greatly reduce the energy consumption of the system. It realizes the continuous sequential switching of the boost and pressure relief strokes during the pressure exchange process through the rotational movement of the multi-channel rotor. Since the internal fluids of the pressure exchanger are brine and seawater during operation, and salt is dissolved in the brine and seawater, when the pressure exchanger is shut down, the concentrated brine between the rotor and the end covers on both sides will form crystals, and the rotor cannot start normally, resulting in pressure exchange jamming. There is a method in the prior art to restart the rotor by driving it with a motor. This method requires connecting the drive to the rotor. The connection method is complicated and there are safety hazards. Summary of the Invention

[0004] The purpose of the utility model is to provide a pressure exchanger to solve the problem in the prior art that after the pressure exchanger is shut down, concentrated brine crystallizes between the rotor and the end covers at both ends, causing excessive rotor resistance and affecting its normal startup.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0006] The utility model proposes a pressure exchanger, which includes:

[0007] The rotor is cylindrical and has a plurality of conversion channels parallel to the axis of the rotor. A magnetic portion is provided inside the rotor.

[0008] a sleeve member having a rotating inner cavity formed therein, wherein the rotor is rotatably connected to the rotating inner cavity, and an electromagnetic coil is provided on the sleeve member, and two ends of the electromagnetic coil are respectively used to be connected to a power source;

[0009] a first end cover connected to the first end of the sleeve member, wherein the first end cover is formed with a first inlet and a first outlet;

[0010] The second end cover is connected to the second end of the sleeve member; a second inlet and a second outlet are formed on the second end cover.

[0011] In some embodiments of the present application, the electromagnetic coil is wound on the outer wall of the sleeve member, and a stator core is further provided inside the sleeve member.

[0012] In some embodiments of the present application, a penetrating mounting hole is formed in the center of the rotor, the magnetic portion is cylindrical and matches the size of the mounting hole, and the magnetic portion is fixed in the mounting hole and coincides with the axis of the rotor.

[0013] In some embodiments of the present application, the magnetic portion includes a plurality of magnetic bars, which are arranged in a circular array in the rotor with the axis of the rotor as the rotation axis, and the magnetic poles of the magnetic bars near the same end of the rotor are the same.

[0014] In some embodiments of the present application, multiple layers of magnetic parts are provided in the rotor along the radial direction of the rotor, and each of the magnetic parts includes a plurality of magnetic bars arranged in an array with the axis of the rotor as the rotation axis.

[0015] In some embodiments of the present application, a penetrating connection hole is formed in the middle of the rotor, the first end cover and the second end cover respectively, a tensioning rod is arranged in the connection hole, and a limiting portion is provided on the tensioning rod, and the limiting portion is respectively located on the outer surface of the first end cover and the second end cover away from the rotor.

[0016] In some embodiments of the present application, a penetrating liquid inlet hole is further formed on the outer wall of the sleeve member, and the liquid inlet hole is connected to a liquid inlet pipe for conveying fluid into the rotating gap between the sleeve member and the rotor.

[0017] In some embodiments of the present application, two or more first inlets and two or more first outlets are formed on the first end cover; the number of second inlets and second outlets on the second end cover is equal to the number of the first inlets;

[0018] The first inlet is used to input high-pressure salt water, the first outlet is used to output low-pressure salt water after decompression, the second inlet is used to input low-pressure seawater, and the second outlet is used to input high-pressure seawater after pressurization.

[0019] In some embodiments of the present application, a first blocking area is formed between the adjacent first inlet and the first outlet, and a second blocking area is formed between the adjacent second inlet and the second outlet. The two ends of the conversion channel are respectively connected to the first inlet and the second inlet, or the two ends of the conversion channel are respectively connected to the first outlet and the second outlet, or the two ends of the conversion channel are respectively blocked by the first blocking area and the second blocking area.

[0020] In some embodiments of the present application, positioning portions are respectively formed at both ends of the sleeve member, and the first end cover and the second end cover are respectively formed with upper positioning portions and lower positioning portions near the inner end surfaces of the sleeve member, and the positioning portions are connected to the corresponding upper positioning portions and the lower positioning portions to achieve the positioning of the first end cover and the second end cover.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] The pressure exchanger involved in the present application has an electromagnetic coil provided on its sleeve member, and the electromagnetic coil is externally connected to a power supply member for supplying power to the electromagnetic coil. A magnetic part is provided inside the rotor. When the electromagnetic coil on the sleeve member is energized, a rotating magnetic field is formed therein. Under the action of the magnetic part, the rotor rotates in the rotating magnetic field formed by the sleeve member to overcome the resistance formed by salt crystallization to the rotor and assist the rotor to start normally. After the rotor starts normally, the power supply member is de-energized, and the rotor continues to rotate driven by the fluid at the inlet.

[0023] This method does not require an external electric drive for the rotor, has a relatively simple structure, and is safer. After the electromagnetic coil is energized, the rotor rotates under the action of the rotating magnetic field formed by the sleeve. After the crystallization disappears, the electromagnetic coil is de-energized and the rotating magnetic field disappears. This makes the rotor driving process more convenient and effective, ensuring that the pressure exchanger can start normally.

[0024] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the appearance of an embodiment of the pressure exchanger proposed by the present utility model;

[0027] Figure 2 yes Figure 1 Schematic diagram of the split pressure exchanger in FIG;

[0028] Figure 3 1 is a schematic structural diagram of an embodiment of a rotor;

[0029] Figure 4 is a schematic structural diagram of another embodiment of a rotor;

[0030] Figure 5is a partially cutaway schematic diagram of a pressure exchanger;

[0031] Figure 6 1. It is a schematic diagram of the sleeve structure;

[0032] Figure 7 is a schematic diagram of the first end cover structure;

[0033] Figure 8 is a schematic structural diagram of the second end cover;

[0034] In the figure,

[0035] 100, sleeve member; 101, rotating inner cavity; 102, rotating gap; 110, first end; 120, second end; 130, positioning portion; 140, electromagnetic coil; 150, liquid inlet;

[0036] 200, rotor; 210, conversion channel; 220, magnetic part;

[0037] 300, first end cover; 310, first inlet; 320, first outlet; 330, first blocking area; 340, upper accommodating recess; 350, upper positioning portion;

[0038] 400, second end cover; 410, second inlet; 420, second outlet; 430, second blocking area; 440, lower accommodating recess; 450, lower positioning portion;

[0039] 500, tensioning rod; 510, limiting portion; 520, connecting hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0046] In recent years, with the rapid development of energy recovery technology and the continuous improvement of its device efficiency, the water production energy consumption of reverse osmosis seawater desalination systems has been greatly reduced. The pressure exchanger, an energy recovery device, has now become one of the essential equipment in seawater or brackish water reverse osmosis desalination systems.

[0047] Reverse osmosis technology has been widely used in seawater desalination. Major constraints to large-scale desalination are energy consumption and the manufacturing technology of key energy recovery components. Energy consumption accounts for over 60% of total operating costs in desalination systems. However, the brine discharged from reverse osmosis modules still maintains a pressure of 5-6 MPa. If this energy could be used to boost the pressure of the seawater feed, system energy consumption could be significantly reduced.

[0048] The energy recovery device realizes the continuous sequential switching of the boost and decompression strokes during the pressure exchange process through the rotational movement of the multi-channel rotor 200, so the continuity of the supply and discharge of the working fluid is better.

[0049] In such a rotary pressure transfer device, there is typically a rotor 200 having a plurality of parallel open-ended channels. Figure 1 、 Figure 2 , a pressure exchanger used to exchange pressure between high-pressure brine output from a reverse osmosis module and low-pressure seawater.

[0050] Specifically, the pressure exchanger includes a rotor 200, a sleeve member 100, a first end cover 300 and a second end cover 400. The rotor 200 is cylindrical and has a plurality of conversion channels 210 parallel to the axis of the rotor 200. A rotating inner cavity 101 is formed in the sleeve member 100, and the rotor 200 can be rotatably connected in the rotating inner cavity 101.

[0051] The upper and lower ends of the rotating inner cavity 101 are respectively covered by the first end cover 300 and the second end cover 400. The two ends of the sleeve member 100 are respectively the first end 110 and the second end 120. The first end cover 300 is connected to the first end 110 of the sleeve member 100, and the second end cover 400 is connected to the second end 120 of the sleeve member 100.

[0052] A first inlet 310 and a first outlet 320 are formed on the first end cover 300 . The first inlet 310 and the first outlet 320 can be used to communicate with the conversion channel 210 .

[0053] A second inlet 410 and a second outlet 420 are formed on the second end cover 400 . The second inlet 410 corresponds to the position of the first outlet 320 . The second inlet 410 and the first outlet 320 are communicated with both ends of the conversion channel 210 .

[0054] The second outlet 420 corresponds to the position of the first inlet 310 , and is connected to the first inlet 310 and both ends of the conversion channel 210 .

[0055] The first inlet 310 is used to input high-pressure salt water, and the second outlet 420 is used to input pressurized high-pressure seawater.

[0056] The second inlet 410 is used to input low-pressure seawater, and the first outlet 320 is used to output the reduced-pressure low-pressure salt water.

[0057] The rotor 200 may be driven by an external force, or the fluid entering the conversion channel 210 through the first inlet 310 and the second inlet 410 may drive the rotor 200 to rotate, as is known in the art.

[0058] During the rotation of the rotor 200, high-pressure salt water is input from the first inlet 310 through the first end cover 300 into the conversion channel 210, causing the pressurized high-pressure seawater to be discharged from the other end of the conversion channel 210, that is, from the first outlet 320 on the second end cover 400; and then, after a very short interval, the conversion channel 210 becomes connected to the second inlet 410 from the second end cover 400, and low-pressure seawater is input from the second inlet 410, causing the low-pressure salt water to be discharged from the first outlet 320 of the first end cover 300 at the other end of the conversion channel 210 at the same time, and this cycle repeats.

[0059] Since the fluids inside the pressure exchanger are brine and seawater during operation, and salt is dissolved in the brine and seawater, crystals may form between the rotor 200 and the end cover during operation, especially when the pressure exchanger is shut down, causing the rotor 200 to fail to start normally, resulting in pressure exchange jamming.

[0060] In order to solve the above problem, the present application provides the rotor 200 with additional power when the rotor 200 restarts to drive it to rotate. After a preset time, the crystals melt as the fluid flows, and the external force is stopped.

[0061] In the present application, the external force of the rotor 200 is obtained through electromagnetic induction, which is similar to the principle of an electric motor. Specifically, a magnetic part 220 is provided in the rotor 200, and the magnetic part 220 is a permanent magnet.

[0062] An electromagnetic coil 140 is provided on the sleeve member 100. Specifically, the electromagnetic coil 140 is wound on the outer wall of the sleeve member 100. In addition to the electromagnetic coil 140, the sleeve member 100 is also provided with a stator core inside. The stator core and the electromagnetic coil 140 together constitute the stator part of the motor.

[0063] The two ends of the electromagnetic coil 140 are respectively used to connect to the power supply, which is used to supply power to the electromagnetic coil 140 to form a rotating magnetic field. The power supply can provide DC power or AC power to the electromagnetic coil. Under the action of the magnetic part 220, the rotor 200 rotates in the rotating inner cavity 101.

[0064] refer to Figure 3 In some embodiments of the present application, a penetrating mounting hole is formed in the center of the rotor 200, and the magnetic portion 220 is cylindrical and adapted to the size of the mounting hole. The magnetic portion 220 is fixed in the mounting hole and coincides with the axis of the rotor 200.

[0065] A connecting shaft is formed in the magnetic portion 220 for connecting to the tensioning rod 500 .

[0066] refer to Figure 4In some other embodiments of the present application, the magnetic portion 220 includes a plurality of magnetic bars, which are arranged in a circular array inside the rotor 200 with the axis of the rotor 200 as the rotation axis, and the magnetic poles of the magnetic bars near the same end of the rotor 200 are the same.

[0067] In some other embodiments of the present application, multiple layers of magnetic parts 220 are provided in the rotor 200 along the radial direction of the rotor 200 . Each magnetic part 220 includes a plurality of magnetic bars arranged in an array with the axis of the rotor 200 as the rotation axis.

[0068] When the rotor 200 stops and restarts, the power supply supplies power to the electromagnetic coil 140 to form a rotating magnetic field. The rotor 200 with the electromagnetic part rotates around its rotation axis under the action of the rotating magnetic field. During the rotation of the rotor 200 and the flow of the fluid, the crystals gradually melt and the resistance disappears.

[0069] After a preset time, the power supply stops supplying power, and the fluid entering the conversion channel 210 through the first inlet 310 and the second inlet 410 drives the rotor 200 to rotate.

[0070] refer to Figure 5-Figure 8 A penetrating connection hole 520 is formed in the middle of the rotor 200, the first end cover 300 and the second end cover 400 respectively. The magnetic part 220 is cylindrical and matches the size of the mounting hole. The connection hole 520 is formed in the middle of the magnetic part 220.

[0071] A penetrating liquid inlet hole 150 is further formed on the outer wall of the sleeve member 100 . The liquid inlet hole 150 is externally connected to a liquid inlet pipe for conveying fluid into the rotating gap 102 between the sleeve member 100 and the rotor 200 .

[0072] The liquid inlet pipe is used to transport high-pressure brine. Part of the high-pressure brine is input into the rotating gap 102 through the liquid inlet pipe from the liquid inlet hole 150, forming a water film between the rotor 200 and the inner wall of the sleeve member 100, which plays a lubricating role and further reduces friction.

[0073] An upper accommodating recess 340 and a lower accommodating recess 440 are respectively provided on the inner end surfaces of the first end cover 300 and the second end cover 400 that are in contact with the rotor 200. After the high-pressure brine serving as the lubricating liquid enters the rotating gap 102 from the liquid inlet hole 140, it is transported up and down along the rotating gap 102.

[0074] The upper accommodating recess 340 and the lower accommodating recess 440 opposite to the rotating gap 102 serve as a temporary storage for the lubricant. The lubricant input from the liquid inlet hole 140 enters the rotating gap 102 and is transported up and down along the rotating gap 102. After passing through the upper accommodating recess 340 and the lower accommodating recess 440, it enters the gap between the rotor 200 and the first end cover 300 and the second end cover 400, thereby lubricating the relative movement between the rotor 200 and the first end cover 300 and the second end cover 400.

[0075] Afterwards, the high-pressure brine that acts as a lubricant is discharged from the first outlet 320 or the second outlet 420. Since the content of the high-pressure brine in this part is very small, it will not affect the result of the pressure conversion.

[0076] The first end cover 300 has at least one first inlet 310 and one first outlet 320 , and the second end cover 400 is correspondingly provided with a second outlet 420 and a second inlet 410 .

[0077] The first inlet 310 and the first outlet 320 are arranged at intervals of 180 degrees around the center of the first end cover 300 .

[0078] Correspondingly, the second outlet 420 and the second inlet 410 are also arranged at intervals of 180 degrees around the center of the second end cover 400 .

[0079] Then, during one rotation of the rotor 200 , one high-pressure salt water pressure reduction process and one low-pressure seawater pressure increase process can be completed.

[0080] In addition, reference Figure 7 、 Figure 8 In other embodiments, two or more first inlets 310 and two or more first outlets 320 are formed on the first end cover 300 ; the number of second inlets 410 and second outlets 420 on the second end cover 400 is equal to the number of first inlets 310 .

[0081] For example but not limited to, the first end cover 300 is provided with two first inlets 310 and two first outlets 320 , and the second end cover 400 is formed with two second inlets 410 and two second outlets 420 .

[0082] The two first inlets 310 and the two first outlets 320 are equally spaced 90 degrees around the center of the first end cover 300 , and the two second inlets 410 and the two second outlets 420 are equally spaced 90 degrees around the center of the second end cover 400 .

[0083] When the rotor 200 rotates one circle, the inlets on the first end cover 300 and the second end cover 400 of each conversion channel 210 diametrically opposite to each other input high-pressure fluid, and the corresponding outlets at the other end output low-pressure fluid.

[0084] Thus, high pressure liquid is discharged from each transfer passage 210 twice during one rotation of the rotor 200; this essentially doubles the ability of the pressure exchanger to discharge high pressure liquid during each rotation of the rotor 200, as compared to prior art devices that use one inlet on each end cap and one approximately diametrically opposed outlet on each end cap.

[0085] A first blocking area 330 is formed between the adjacent first inlet 310 and the first outlet 320, and a second blocking area 430 is formed between the adjacent second inlet 410 and the second outlet 420. The two ends of the conversion channel 210 are respectively connected to the first inlet 310 and the second inlet 410, or the two ends of the conversion channel 210 are respectively connected to the first outlet 320 and the second outlet 420, or the two ends of the conversion channel 210 are respectively blocked by the first blocking area 330 and the second blocking area 430.

[0086] The arc distance corresponding to the first blocking area 330 and the second blocking area 430 is greater than the opening size of the two ends of the conversion channel 210 , and is used to seal the two ends of the conversion channel 210 .

[0087] This ensures that the conversion channel 210 on the rotor 200 cannot be connected to the inlet and outlet on the same end cover at the same time.

[0088] Combine Figure 5 In some embodiments of the present application, in order to ensure the stable rotation of the rotor 200, the connection between the first end cover 300, the second end cover 400 and the sleeve member 100 is stable, and the first end cover 300 and the second end cover 400 are prevented from falling outward during the rotation of the rotor 200. The first end cover 300 and the second end cover 400 are limited. A tensioning rod 500 is also provided in the present application.

[0089] A penetrating connecting hole 520 is formed in the middle of the rotor 200, the first end cover 300 and the second end cover 400 respectively. The tensioning rod 500 is arranged in the connecting hole 520. A limiting portion 510 is provided on the tensioning rod 500. The limiting portion 510 is respectively located on the outer surface of the first end cover 300 and the second end cover 400 away from the rotor 200.

[0090] The limiting portion 510 is specifically a nut structure. A threaded section is provided on the tension rod 500 . The limiting portion 510 is threadedly connected to the threaded section of the tension rod 500 to limit the first end cover 300 and the second end cover 400 .

[0091] During installation, the first end cover 300, the rotor 200 and the second end cover 400 are first sleeved on the tensioning rod 500, and then the limiting parts 510 are respectively sleeved from the outside of the first end cover 300 and the second end cover 400, and fixed to the threaded segments by threaded connection. The positions of the threaded segments are respectively located on the outside of the first end cover 300 and the second end cover 400. The limiting parts 510 are connected to the threaded segments at the corresponding positions to limit the first end cover 300 and the second end cover 400 respectively.

[0092] In other embodiments of the present application, in order to ensure that the relative positions of the first end cover 300 and the second end cover 400 are accurately installed, positioning portions 130 are respectively provided at both ends of the sleeve member 100, and the first end cover 300 and the second end cover 400 are respectively formed with upper positioning portions 350 and lower positioning portions 450 on the inner end surfaces close to the sleeve member 100.

[0093] The positioning portion 130 and the corresponding positioning portion 130 are connected to realize the connection and positioning of the first end cover 300 and the sleeve member 100 , and the positioning portion 130 below the sleeve member 100 is correspondingly connected to the lower positioning portion 450 on the second end cover 400 to realize the positioning of the second end cover 400 .

[0094] The positioning portion 130 is a plurality of positioning holes arranged at an angle, and the upper positioning portion 350 and the lower positioning portion 450 are a plurality of positioning protrusions corresponding one-to-one to the positioning holes.

[0095] The multiple positioning holes of the positioning portion 130 are specifically arranged to be arranged at non-uniform intervals along the end face of the sleeve member 100. For example, but not limited to, the number of positioning holes is three, two of which are respectively arranged on the end face diameter of the sleeve member 100, that is, arranged at 180 degrees, and the specific position of the other positioning hole is not restricted, and it is sufficient to ensure that the positioning holes of the first end cover 300 and the second end cover 400 are arranged in alignment.

[0096] During actual installation, the relative positions of the first end cover 300 and the second end cover 400 can be determined by connecting the first end cover 300 and the sleeve member 100, and between the second end cover 400 and the sleeve member 100, ensuring that the first inlet 310 and the second outlet 420 on the first end cover 300 and the second end cover 400 correspond one-to-one, and the first outlet 320 and the second inlet 410 correspond one-to-one.

[0097] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0098] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pressure exchanger, characterized in that: include: The rotor is cylindrical and has a plurality of conversion channels parallel to the axis of the rotor. A magnetic portion is provided inside the rotor. a sleeve member having a rotating inner cavity formed therein, wherein the rotor is rotatably connected to the rotating inner cavity, and an electromagnetic coil is provided on the sleeve member, and the electromagnetic coil is used to be connected to a power source; a first end cover connected to the first end of the sleeve member, wherein the first end cover is formed with a first inlet and a first outlet; The second end cover is connected to the second end of the sleeve member; a second inlet and a second outlet are formed on the second end cover.

2. The pressure exchanger according to claim 1, characterized in that The electromagnetic coil is wound on the outer wall of the sleeve member, and a stator core is also arranged inside the sleeve member.

3. The pressure exchanger according to claim 1, characterized in that A penetrating mounting hole is formed in the center of the rotor. The magnetic part is cylindrical and matches the size of the mounting hole. The magnetic part is fixed in the mounting hole and coincides with the axis of the rotor.

4. The pressure exchanger according to claim 1, characterized in that The magnetic part includes a plurality of magnetic bars, which are arranged in a circular array in the rotor with the axis of the rotor as the rotation axis, and the magnetic poles of the magnetic bars close to the same end of the rotor are the same.

5. The pressure exchanger according to claim 4, characterized in that Along the radial direction of the rotor, multiple layers of magnetic parts are arranged inside the rotor, and each of the magnetic parts includes a plurality of magnetic bars arranged in an array with the axis of the rotor as the rotation axis.

6. The pressure exchanger according to claim 1, characterized in that A penetrating connection hole is formed in the middle of the rotor, the first end cover and the second end cover respectively, a tensioning rod is arranged in the connection hole, and a limiting portion is provided on the tensioning rod, and the limiting portion is respectively located on the outer surface of the first end cover and the second end cover away from the rotor.

7. The pressure exchanger according to claim 1, characterized in that A penetrating liquid inlet hole is also formed on the outer wall of the sleeve member. The liquid inlet hole is connected to a liquid inlet pipe for conveying fluid into the rotating gap between the sleeve member and the rotor.

8. The pressure exchanger according to claim 1, characterized in that Two or more first inlets and two or more first outlets are formed on the first end cover; the number of the second inlets and the second outlets on the second end cover is equal to the number of the first inlets; The first inlet is used to input high-pressure salt water, the first outlet is used to output low-pressure salt water after decompression, the second inlet is used to input low-pressure seawater, and the second outlet is used to input high-pressure seawater after pressurization.

9. The pressure exchanger according to claim 1, characterized in that A first blocking area is formed between the adjacent first inlet and first outlet, and a second blocking area is formed between the adjacent second inlet and second outlet. The two ends of the conversion channel are respectively connected to the first inlet and the second inlet, or the two ends of the conversion channel are respectively connected to the first outlet and the second outlet, or the two ends of the conversion channel are respectively blocked by the first blocking area and the second blocking area.

10. The pressure exchanger according to claim 1, characterized in that Positioning parts are respectively formed at both ends of the sleeve member, and the first end cover and the second end cover are respectively formed with upper positioning parts and lower positioning parts near the inner end surface of the sleeve member, and the positioning parts are connected to the corresponding upper positioning parts and the lower positioning parts to achieve the positioning of the first end cover and the second end cover.

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