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, and a plurality of switching channels parallel to the axis of the rotor are formed in the rotor; a rotating inner cavity is formed in the sleeve piece, and the rotor is rotatably connected into the rotating inner cavity; the first end cover is connected to the first end of the sleeve piece; the second end cover is connected to the second end of the sleeve piece; at least one end face of the rotor is provided with an operation part, and the operation part is used for being detachably connected with an operation handle. When the pressure exchanger is shut down and restarted, the rotor and the first end cover or the second end cover are bonded by salt crystals, and restarting cannot be carried out, an operator connects the operation handle with the operation part, manually rotates the operation handle and drives the rotor to rotate until the salt crystals are dissolved, the driving mode is more energy-saving, the structure of the pressure exchanger is slightly changed, and the pressure exchanger is more convenient to use. And normal rotation of the rotor during restarting is conveniently and quickly ensured.

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 the efficiency of its devices, the water production energy consumption of reverse osmosis seawater desalination systems has been significantly reduced. The pressure exchanger, as an energy recovery device, has now become one of the essential equipment for 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 the low-pressure seawater for reverse osmosis, which can significantly reduce the system energy consumption. It realizes the continuous sequential switching of the pressurization and pressure relief strokes during the pressure exchange process through the rotational movement of a multi-channel rotor. Since the fluid inside the pressure exchanger is brine and seawater during operation, and salts are dissolved in the brine and seawater, when the pressure exchanger stops, crystals will form in the concentrated brine between the rotor and the two end covers, and the rotor cannot start normally, resulting in pressure exchange jamming. Summary of the Invention

[0004] The purpose of the utility model is to provide a pressure exchanger to solve the problems in the prior art that after the pressure exchanger stops, crystals form in the concentrated brine between the rotor and the two end covers, resulting in excessive resistance of the rotor and affecting its normal start.

[0005] To achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions to be realized:

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

[0007] A rotor, which is cylindrical and has a plurality of conversion channels parallel to the axis of the rotor formed thereon;

[0008] A sleeve member, which has a rotating inner cavity formed therein, and the rotor is rotatably connected in the rotating inner cavity;

[0009] A first end cover, which is connected to the first end of the sleeve member;

[0010] A second end cover, which is connected to the second end of the sleeve member;

[0011] Among them, at least one end face of the rotor is provided with an operating part, and the operating part is used for detachably connecting an operating handle.

[0012] In some embodiments of the present application, the operating portion is a non-round hole formed on the first end face and / or the second end face of the rotor. A plugging portion adapted to the shape of the non-round hole is formed on the operating handle, and the plugging portion is connected to the operating portion to realize the connection between the operating handle and the rotor.

[0013] In some embodiments of the present application, the cross-sectional shape formed by the operating portion along the cross-sectional direction parallel to the end face of the rotor is a polygon.

[0014] In some embodiments of the present application, the cross-sectional shape formed by the operating portion along the cross-sectional direction parallel to the end face of the rotor is an ellipse, and the cross-sectional shape of the plugging portion on the operating handle is also an ellipse.

[0015] In some embodiments of the present application, the operating handle further includes a hand-held portion disposed at an angle to the plugging portion, and an anti-slip layer is provided on the outer surface of the hand-held portion.

[0016] In some embodiments of the present application, a contact recess is formed on the outer wall of the rotor to reduce the friction between the outer wall of the rotor and the inner wall of the sleeve member;

[0017] The contact recesses are a plurality of elongated grooves spaced along the circumferential direction of the rotor, and the extending direction of each elongated groove is parallel to the rotation axis of the rotor.

[0018] In some embodiments of the present application, a through liquid inlet hole is further formed on the outer wall of the sleeve member, and the liquid inlet hole is externally connected to a liquid inlet pipe for delivering fluid into the rotational clearance between the sleeve member and the rotor.

[0019] 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;

[0020] The first inlets are used for inputting high-pressure brine, the first outlets are used for outputting low-pressure brine after pressure reduction, the second inlets are used for inputting low-pressure seawater, and the second outlets are used for inputting high-pressure seawater after pressure increase.

[0021] In some embodiments of the present application, a first blocking area is formed between adjacent first inlets and first outlets, a second blocking area is formed between adjacent second inlets and second outlets, and two ends of the conversion channel are respectively connected to the first inlet and the second inlet, or two ends of the conversion channel are respectively connected to the first outlet and the second outlet, or two ends of the conversion channel are respectively blocked by the first blocking area and the second blocking area.

[0022] In some embodiments of the present application, positioning portions are respectively formed at both ends of the sleeve member. An upper positioning portion and a lower positioning portion are respectively formed on the inner end faces of the first end cover and the second end cover close to the sleeve member. The positioning portion is connected to the corresponding upper positioning portion and the lower positioning portion to achieve the positioning of the first end cover and the second end cover.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0024] For the pressure exchanger involved in the present application, at least one end of the rotor is provided with an operating portion, which can be detachably connected to an operating handle. When the pressure exchanger stops and restarts, if the rotor is adhered by salt crystallization between the first end cover or the second end cover and the resistance is too large to restart, the operator connects the operating handle to the operating portion and manually rotates the operating handle to drive the rotor to rotate until the salt crystallization melts. The resistance of the rotor decreases, and it rotates under the action of water flow for pressure exchange. Then, the operator can disassemble the operating handle.

[0025] This driving method is more energy-saving, and the structure of the pressure exchanger is changed less, which can conveniently and quickly ensure the normal rotation of the rotor when it restarts.

[0026] After reading the specific embodiments of the present utility model in conjunction with the attached drawings, other features and advantages of the present utility model will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following-described drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is a schematic external view of an embodiment of the pressure exchanger proposed by the present utility model;

[0029] Figure 2 is a schematic external view of another embodiment of the pressure exchanger proposed by the present utility model;

[0030] Figure 3 is a schematic exploded view of an embodiment of the pressure exchanger;

[0031] Figure 4 is a schematic exploded view of another embodiment of the pressure exchanger;

[0032] Figure 5 is a schematic view of the connection between the operating handle and the rotor (one of them);

[0033] Figure 6It is the second schematic diagram of the connection between the operating handle and the rotor;

[0034] Figure 7 It is the structural diagram of the rotor;

[0035] Figure 8 It is the schematic diagram of the structure of the first end cover;

[0036] Figure 9 It is the schematic diagram of the structure of the second end cover;

[0037] In the figure,

[0038] 100. Sleeve part; 101. Rotating inner cavity; 102. Rotating gap; 110. First end; 120. Second end; 130. Positioning part; 140. Liquid inlet hole;

[0039] 200. Rotor; 210. Conversion channel; 220. Operating part; 230. Contact concave part;

[0040] 300. First end cover; 310. First inlet; 320. First outlet; 330. First blocking area; 340. Upper accommodating concave part; 350. Upper positioning part; 360. First avoidance hole;

[0041] 400. Second end cover; 410. Second inlet; 420. Second outlet; 430. Second blocking area; 440. Lower accommodating concave part; 450. Lower positioning part; 460. Second avoidance hole;

[0042] 500. Operating handle; 510. Insertion part; 520. Hand-held part; 521. Anti-slip layer. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0045] 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In this utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0048] The following disclosure provides many different embodiments or examples for implementing different structures of this utility model. To simplify the disclosure of this utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit this utility model. In addition, this utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed.

[0049] 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 significantly reduced. The pressure exchanger, an energy recovery device, has now become one of the essential equipment for seawater or brackish water reverse osmosis desalination systems.

[0050] Reverse osmosis technology has been widely used in seawater desalination. The main limiting factors for large-scale seawater desalination are the energy consumption index and the manufacturing technology of key energy recovery components. In seawater desalination systems, the energy consumption cost accounts for more than 60% of the total operating cost. Moreover, the concentrated brine discharged from the reverse osmosis module still has a pressure of 5-6 MPa. If this part of the energy can be used to pressurize the feed seawater, the system energy consumption can be significantly reduced.

[0051] The energy recovery device realizes the continuous sequential switching of the pressurization and pressure relief strokes in the pressure exchange process through the rotational motion of the multi-channel rotor 200, so the continuity of the working liquid supply and discharge is relatively good.

[0052] In such a rotary pressure transmission device, there is usually a rotor 200 with channels having multiple parallel open ends. This application proposes a pressure exchanger for performing pressure exchange between the high-pressure brine output from the reverse osmosis module and the low-pressure seawater.

[0053] Specifically, referring to Figures 1-3 , the pressure exchanger includes a rotor 200, a sleeve member 100, a first end cap 300, and a second end cap 400. The rotor 200 is cylindrical, and multiple conversion channels 210 parallel to the axis of the rotor 200 are formed thereon. A rotating inner cavity 101 is formed in the sleeve member 100, and the rotor 200 is rotatably connected in the rotating inner cavity 101.

[0054] The upper and lower ends of the rotating inner cavity 101 are respectively sealed by the first end cap 30 and the second end cap 400. The two ends of the sleeve member 100 are respectively a first end 110 and a second end 120. The first end cap 300 is connected to the first end 110 of the sleeve member 100, and the second end cap 400 is connected to the second end 120 of the sleeve member 100.

[0055] A first inlet 310 and a first outlet 320 are formed on the first end cap 300. The first inlet 310 and the first outlet 320 can be used to communicate with the conversion channels 210.

[0056] A second inlet 410 and a second outlet 420 are formed on the second end cap 400. The position of the second inlet 410 corresponds to that of the first outlet 320, and it is connected to both ends of the conversion channels 210 simultaneously with the first outlet 320.

[0057] The position of the second outlet 420 corresponds to that of the first inlet 310, and it is connected to both ends of the conversion channels 210 with the first inlet 310.

[0058] The first inlet 310 is used to input high-pressure brine, and the second outlet 420 is used to input the high-pressure seawater after pressure increase.

[0059] The second inlet 410 is used to input low-pressure seawater, and the first outlet 320 is used to output the low-pressure brine after pressure reduction.

[0060] The rotor 200 can be driven by an external force, or the rotor 200 is rotated by the fluid entering the conversion channels 210 through the first inlet 310 and the second inlet 410, as is known in the art.

[0061] During the rotation of the rotor 200, high-pressure brine enters the conversion channel 210 through the first inlet 310 and the first end cover 300, causing the pressurized high-pressure seawater to be discharged from the first outlet 320 on the second end cover 400 at the other end of the conversion channel 210; 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 depressurized low-pressure brine to be discharged from the first outlet 320 of the first end cover 300 at the other end of the conversion channel 210 simultaneously, and so on in a cycle.

[0062] Since the fluid inside the pressure exchanger is brine and seawater during its operation, and since salt is dissolved in the brine and seawater, crystallization may form between the rotor 200 and the end cover during the operation of the pressure exchanger, especially when it stops. The rotor 200 cannot start normally, resulting in pressure exchange jamming.

[0063] To solve the above problems, in this application, when the rotor 200 is restarted, an additional force is applied to the rotor 200 to drive its rotation. After a preset time, as the fluid flows, the crystallization melts, and then the external force application stops.

[0064] Reference Figures 3-6 In this application, the external force of the rotor 200 is given manually by the operator. Specifically, an operation part 220 is provided on at least one end face of the rotor 200, and the operation part 220 is used for detachably connecting an operation handle 500.

[0065] When the rotor 200 gets stuck during restart, the operator inserts the operation handle 500 into the operation part 220 and manually drives the rotor 200 to rotate. During rotation, the crystallization melts under the action of the water flow, reducing the resistance of the rotor 200 until the rotor 200 rotates automatically under the drive of the water flow.

[0066] Specifically, in some embodiments of this application, the operation part 220 is a non-round hole formed on the first end face 201 and / or the second end face 202 of the rotor 200. In other words, the operation part 220 can be formed on the first end face 201, or on the second end face 202, or operation parts 220 are provided on both the first end face 201 and the second end face 202, and the connection position of the operation handle 500 is determined according to the operation habits of the operator.

[0067] The operation part 220 is a non-round hole to enable rotation under the driving action of the operation handle 500.

[0068] The operation handle 500 is formed with a plug-in part 510 that matches the shape of the non-round hole, and the plug-in part 510 is connected to the operation part 220 to achieve the connection between the operation handle 500 and the rotor 200.

[0069] In some embodiments of the present application, the cross-sectional shape formed by the operation part 220 along the cross-sectional direction parallel to the end face of the rotor 200 is a polygon.

[0070] The polygon is a polygon structure such as a triangle, a rectangle or a pentagon.

[0071] Reference Figure 3 , in some other embodiments of the present application, the cross-sectional shape formed by the operation part 220 along the cross-sectional direction parallel to the end face of the rotor 200 is an ellipse, and the cross-sectional shape of the insertion part 510 on the operation handle 500 is also an ellipse.

[0072] Specific reference Figure 8 , Figure 9 , a first avoidance hole 360 and a second avoidance hole 460 corresponding to the position of the operation part 220 are formed on the first end cover 300 and the second end cover 400, and the sizes of the first avoidance hole 360 and the second avoidance hole 460 are not less than that of the operation part 220 to facilitate the insertion part 510 to pass through.

[0073] Specifically, when the operation part 220 is formed on the first end face 201, the first avoidance hole 360 is formed on the first end cover 300 connected to the first end face 201. When the operation part 220 is formed on the second end face 202, the second avoidance hole 460 is formed on the second end cover 400. When the operation parts 220 are provided on both the first end face 201 and the second end face 202, the first avoidance hole 360 and the second avoidance hole 460 are respectively formed on the first end cover 300 and the second end cover 400.

[0074] Reference Figure 6 , the operation handle 500 further includes a hand-held part 520 arranged at an angle to the insertion part 510 to facilitate the operation by the operator.

[0075] An anti-slip layer 521 is arranged on the outside of the hand-held part 520, and the anti-slip layer 521 can improve the operation comfort and is more convenient for the operator to hold.

[0076] Wherein, a contact concave part 230 is formed on the outer wall of the rotor 200 to reduce the friction between the outer wall of the rotor 200 and the inner wall of the sleeve part 100.

[0077] During the rotation of the rotor 200 in the rotation inner cavity 101, friction is formed between the outer wall of the rotor 200 and the side wall of the rotation inner cavity 101, resulting in an increase in the resistance of the rotor 200, which will affect the rotation speed of the rotor 200 and further affect the efficiency of pressure exchange.

[0078] To solve the above problems, a contact recess 230 is formed on the outer wall of the rotor 200 of the present application. The contact recess 230 is a concave structure formed on the outer wall of the rotor 200. The formation of the contact recess 230 can reduce the contact area between the rotor 200 and the inner wall of the sleeve member 100, thereby reducing friction, ensuring the rotation speed of the rotor 200, and guaranteeing the efficiency of pressure exchange.

[0079] In some embodiments of the present application, the contact recesses 230 are a plurality of elongated grooves arranged at intervals along the circumferential direction of the rotor 200, and each elongated groove is parallel to the central axis of the rotor 200.

[0080] That is, the contact recesses 230 are vertically formed on the outer wall of the rotor 200. The cross-sectional shape of the contact recesses 230 is arc-shaped, and the relative convex portions between adjacent contact recesses 230 are also arc structures, so as to reduce the flow resistance and facilitate processing and forming.

[0081] The width, depth dimensions of each elongated groove in the contact recess 230 and the interval dimension between adjacent elongated grooves are designed according to actual design requirements.

[0082] In some other embodiments, the contact recess 230 is a spiral groove formed on the outer wall of the rotor 200. This structure is more convenient in the processing process and is also beneficial to reducing the processing difficulty.

[0083] A through liquid inlet hole 140 is further formed on the outer wall of the sleeve member 100. The liquid inlet hole 140 is externally connected to a liquid inlet pipe for delivering fluid into the rotation gap 102 between the sleeve member 100 and the rotor 200.

[0084] The liquid inlet pipe is used to deliver high-pressure brine. Part of the high-pressure brine is input into the rotation gap 102 from the liquid inlet hole 140 through the liquid inlet pipe, and a water film is formed between the rotor 200 and the inner wall of the sleeve member 100, playing a lubricating role and further reducing friction.

[0085] There is at least one first inlet 310 and one first outlet 320 on the first end cover 300, and a second outlet 420 and a second inlet 410 are correspondingly arranged on the second end cover 400.

[0086] The first inlet 310 and the first outlet 320 are arranged at a 180-degree interval around the center of the first end cover 300.

[0087] Correspondingly, the second outlet 420 and the second inlet 410 are also arranged at a 180-degree interval around the center of the second end cover 400.

[0088] Then, during one rotation of the rotor 200, a high-pressure brine pressure reduction process and a low-pressure seawater pressure increase process can be completed.

[0089] Additionally, referring to Figure 8 and Figure 9 , in some other embodiments, two or more first inlets 310 and two or more first outlets 320 are formed on the first end cap 300; the number of the second inlet 410 and the second outlet 420 on the second end cap 400 is equal to that of the first inlets 310.

[0090] For example but not limited to, two first inlets 310 and two first outlets 320 are provided on the first end cap 300, and two second inlets 410 and two second outlets 420 are formed on the second end cap 400.

[0091] The two first inlets 310 and the two first outlets 320 are equally spaced apart by 90 degrees around the center of the first end cap 300, and the two second inlets 410 and the two second outlets 420 are equally spaced apart by 90 degrees around the center of the second end cap 400. <{

[0092] When the rotor 200 rotates one circle, high-pressure fluid is input at the inlets on the first end cap 300 and the second end cap 400 that are diametrically opposite to each conversion channel 210, and low-pressure fluid is output at the corresponding outlets at the other end.

[0093] Therefore, during one rotation of the rotor 200, the high-pressure liquid will be discharged twice from each conversion channel 210; compared with the prior art devices that use one inlet on each end cap and one outlet with a substantially diametrically opposite position on each end cap, this basically doubles the ability of the pressure exchanger to discharge high-pressure liquid during each rotation of the rotor 200.

[0094] A first blocking area 330 is formed between adjacent first inlets 310 and first outlets 320, a second blocking area 430 is formed between adjacent second inlets 410 and second outlets 420, both ends of the conversion channel 210 are respectively connected to the first inlet 310 and the second inlet 410, or both ends of the conversion channel 210 are respectively connected to the first outlet 320 and the second outlet 420, or both ends of the conversion channel 210 are respectively blocked by the first blocking area 330 and the second blocking area 430.

[0095] The arc distances corresponding to the first blocking area 330 and the second blocking area 430 are greater than the opening sizes at both ends of the conversion channel 210, for sealing both ends of the conversion channel 210.

[0096] To achieve that the conversion channels 210 on the rotor 200 cannot be simultaneously connected to the inlets and outlets on the same end cap.

[0097] In some embodiments of the present application, to ensure the stable rotation of the rotor 200 and the stable connection between the first end cover 300, the second end cover 400 and the sleeve member 100, and to prevent the first end cover 300 and the second end cover 400 from slipping outwards during the rotation of the rotor 200, the first end cover 300 and the second end cover 400 are limited. The present application also fixes and pastes the first end cover 300 and the second end cover 400 to the upper and lower ends of the sleeve member 100 by means of glue or the like.

[0098] Figure 8 、 Figure 9 Combined with Figure 3 、 Figure 4 In some other embodiments of the present application, to ensure the accurate installation of the relative positions of the first end cover 300 and the second end cover 400, positioning portions 130 are respectively provided at both ends of the sleeve member 100, and upper positioning portions 350 and lower positioning portions 450 are respectively formed on the inner end faces of the first end cover 300 and the second end cover 400 close to the sleeve member 100.

[0099] The positioning portion 130 and the upper positioning portion 350 are connected to achieve the connection and positioning between 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 achieve the positioning of the second end cover 400.

[0100] 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 to the positioning holes one by one.

[0101] The specific setting of the plurality of positioning holes of the positioning portion 130 is non-equidistantly arranged along the end face of the sleeve member 100. For example, but not limited to, the number of positioning holes is three, and two of the three positioning holes are respectively arranged on the diameter of the end face of the sleeve member 100, that is, arranged at 180 degrees. The specific position of the other positioning hole is not limited, as long as the arrangement of the positioning holes of the first end cover 300 and the second end cover 4 is correct. Then, during actual installation, the relative positions of the first end cover 300 and the second end cover 400 can be determined through the connection between 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 on the first end cover 300 corresponds to the second outlet 420 one by one, and the first outlet 320 corresponds to the second inlet 410 one by one.

[0102] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0103] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the technical field to which the present utility model pertains within the technical scope disclosed by the present utility model shall be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to 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 sleeve member having a rotating inner cavity formed therein, wherein the rotor is rotatably connected to the rotating inner cavity; a first end cap connected to the first end of the sleeve member; a second end cap connected to the second end of the sleeve member; Wherein, an operating portion is provided on at least one end surface of the rotor, and the operating portion is used for detachably connecting to an operating handle.

2. The pressure exchanger according to claim 1, characterized in that The operating portion is a non-circular hole formed on the first end face and / or the second end face of the rotor, and a plug-in portion that is adapted to the shape of the non-circular hole is formed on the operating handle. The plug-in portion is connected to the operating portion to realize the connection between the operating handle and the rotor.

3. The pressure exchanger according to claim 2, characterized in that The operating portion has a polygonal cross-sectional shape formed along a cross-sectional direction parallel to an end surface of the rotor.

4. The pressure exchanger according to claim 2, characterized in that The cross-sectional shape of the operating portion formed along a cross-sectional direction parallel to the end surface of the rotor is elliptical, and the cross-sectional shape of the plug-in portion on the operating handle is also elliptical.

5. The pressure exchanger according to claim 2, characterized in that The operating handle further comprises a hand-held portion arranged at an angle to the plug-in portion, and an anti-slip layer is arranged on the outside of the hand-held portion.

6. The pressure exchanger according to claim 1, characterized in that A contact recess is formed on the outer wall of the rotor for reducing friction between the outer wall of the rotor and the inner wall of the sleeve member; The contact recesses are a plurality of long strip grooves spaced apart along the circumference of the rotor, and an extending direction of each of the long strip grooves is parallel to the rotation axis of 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 The first end cover is formed with two or more first inlets and two or more first outlets; the second inlets and second outlets on the second end cover are equal in number to 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 8, 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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