Anti-blocking fluid pressure exchange device

Abstract

The invention discloses an anti-blocking fluid pressure exchange device which is applied to the technical field of fluid pressure exchange devices and comprises two sets of shells, a rotor, a raw water end cover, a concentrated water end cover and a shaft, the rotor, the raw water end cover, the concentrated water end cover and the shaft are all arranged in the two sets of shells, the rotor is located between the raw water end cover and the concentrated water end cover, and the rotor is located between the raw water end cover and the concentrated water end cover. The two end faces of the rotor are respectively connected with the end faces of the raw water end cover and the concentrated water end cover, an axial through hole I is formed in the center of the rotor, a plurality of through holes II are formed in the radial direction of the through hole I, the shaft is arranged in the through hole I of the rotor, and the rotor is rotationally connected with the shaft; the shaft is a hollow shaft, a plurality of sets of cleaning grooves are formed in the circumferential direction of the shaft at equal intervals, the cleaning grooves penetrate through the shaft, cleaning blocks are arranged in the cleaning grooves, the cleaning blocks are rotationally connected with the shaft, and gaps exist between the cleaning blocks and the inner wall of the rotor; the fluid pressure exchange device can prevent the rotor and the shaft from being blocked, and the operation stability of the fluid pressure exchange device is improved.

Description

Technical Field

[0001] This invention relates to the field of fluid pressure exchange device technology, specifically to a clog-resistant fluid pressure exchange device. Background Technology

[0002] In the fields of seawater desalination and geothermal energy recovery, fluid pressure exchangers significantly reduce system energy consumption by directly transmitting fluid pressure. However, traditional fluid pressure exchanger equipment suffers from a fatal flaw when processing fluids with high salt and mineral content, such as geothermal brine or seawater, which is prone to scaling and clogging in the clearance between the shaft and rotor.

[0003] In existing technologies, hydrodynamic bearings are used to support rotor rotation, which relies on wedge-shaped liquid film lubrication generated by the high-speed rotation of the rotor. However, the fluid in the hydrodynamic bearing area is relatively static and renews slowly. When silicates, calcium carbonates in local hot brine or salts in seawater remain there, crystals will quickly precipitate. Crystallization causes mechanical jamming, leading to a surge in rotor rotation torque, overload of the drive motor, and vibration caused by uneven liquid film thickness, which accelerates mechanical fatigue and ultimately causes the rotor to seize up, requiring shutdown and maintenance.

[0004] Therefore, it is necessary to provide a clog-resistant fluid pressure exchange device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a clog-resistant fluid pressure exchange device that can prevent rotor and shaft blockage, thereby maintaining high energy efficiency and enabling long-term maintenance-free operation, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a clog-resistant fluid pressure exchange device, comprising two sets of housings, a rotor, a raw water end cap, a concentrated water end cap, and a shaft. The rotor, raw water end cap, concentrated water end cap, and shaft are all disposed within the two sets of housings. The rotor is located between the raw water end cap and the concentrated water end cap. The two end faces of the rotor are respectively connected to the end faces of the raw water end cap and the concentrated water end cap. The rotor has an axial through hole I at its center, and a plurality of through holes II are disposed radially along the through hole I. The shaft is placed inside the through hole I of the rotor. The rotor is rotatably connected to the shaft, and thus the rotor rotates around the center line of the shaft.

[0007] The shaft is a hollow shaft with several sets of cleaning grooves evenly spaced along its circumference. The cleaning grooves penetrate the shaft and contain cleaning blocks that are rotatably connected to the shaft. There is a gap between the cleaning blocks and the inner wall of the rotor. The shaft also has four sets of collection grooves, which correspond to the cleaning grooves. Each set of collection grooves consists of three interconnected circular holes, with the middle circular hole coinciding with the cleaning groove and the other two circular holes being symmetrical about the cleaning groove. The collection groove is also connected to the cleaning groove.

[0008] The cleaning block has a circular center and a raised top, and arc-shaped grooves on both sides.

[0009] According to the above technical solution, two openings are respectively provided on the raw water end cap and the concentrate end cap, and a sealing area is provided between the two openings on the raw water end cap and the concentrate end cap.

[0010] According to the above technical solution, the outer shell is provided with a high-pressure port and a low-pressure port, and the two sets of high-pressure ports and low-pressure ports on the outer shell correspond to the positions of the two openings provided on the raw water end cap and the concentrated water end cap, respectively.

[0011] According to the above technical solution, a manifold is provided on the shaft. The manifold is a high-pressure supply manifold and is connected to the opening on the concentrate end cap corresponding to the high-pressure port.

[0012] According to the above technical solution, two sets of fixing rings are fixedly connected inside the shaft. The two sets of fixing rings are located at both ends inside the shaft. A plurality of cleaning rods are fixedly connected between the two sets of fixing rings. The plurality of cleaning rods are arranged at equal intervals along the radial direction of the fixing rings. A filter screen is arranged around the plurality of cleaning rods. The filter screen is located between the plurality of cleaning rods and the shaft. The filter screen is rotatably connected to the shaft.

[0013] According to the above technical solution, the bottom of the cleaning block is hinged with a telescopic part, and the other end of the telescopic part is hinged to the filter screen.

[0014] According to the above technical solution, the shaft is provided with a plurality of throttling holes, which penetrate the shaft and communicate with the hollow interior of the shaft.

[0015] According to the above technical solution, the shaft is internally provided with a pressure sensor, a spring and a pressure plate. The pressure sensor is located at the end of the shaft, between one of the fixed rings and the end of the shaft. The spring is located between the pressure sensor and the pressure plate. The two ends of the spring are fixedly connected to the pressure sensor and the pressure plate respectively. The outer diameter of the pressure plate matches the inner hollow diameter of the shaft. The pressure plate is slidably connected to the shaft.

[0016] According to the above technical solution, the pressure sensor is electrically connected to a data acquisition and analysis module. The pressure plate is used to withstand the impact of fluid entering the hollow interior of the shaft through the manifold, and the force of the impact is amplified by the spring. The pressure sensor then detects the force of the fluid impacting the pressure plate. The data acquisition and analysis module obtains the instantaneous pressure value f detected by the pressure sensor and the maximum difference Δf of the pressure fluctuation per unit time. Combined with the minimum allowable pressure value F of the working fluid entering the shaft and the allowable change range set inside the data acquisition and analysis module as the pressure difference range ΔF1-ΔF2, the system determines the situation of fluid entering the shaft and the usage of the fluid pressure exchange device during fluid pressure exchange.

[0017] According to the above technical solution, the plurality of fluid pressure exchange devices are connected to fluid exchange pipes, and fluid is then input to the shaft and then to the rotor through the fluid exchange pipes.

[0018] The exchange pipeline includes a high-pressure raw water pipeline, a low-pressure raw water pipeline, a high-pressure concentrate pipeline, a low-pressure concentrate pipeline, and several valves. The high-pressure port on the outer shell near the raw water end cap is connected to the high-pressure raw water pipeline, the low-pressure port on the outer shell near the raw water end cap is connected to the low-pressure raw water pipeline, the high-pressure port on the outer shell near the concentrate end cap is connected to the high-pressure concentrate pipeline, and the high-pressure port on the outer shell near the concentrate end cap is connected to the low-pressure concentrate pipeline. Several valves are respectively installed on the pipelines of the fluid pressure exchange device and the high-pressure raw water pipeline, the low-pressure raw water pipeline, the high-pressure concentrate pipeline, and the low-pressure concentrate pipeline.

[0019] Several of the valves are electrically connected to the data acquisition and analysis module.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by providing a cleaning groove, a cleaning block, a collection groove, a telescopic part, an arc-shaped groove, and a throttling hole, can trigger the cleaning block to rotate through resistance when particles come into contact with it. Then, the telescopic part drives the filter screen to rotate, causing the fixed cleaning rod to scrape the inner wall of the filter screen, thus performing self-cleaning of the filter screen. At the same time, when the cleaning block is triggered to rotate through resistance when particles come into contact with it, the cleaning block can open the cleaning groove. High-pressure fluid is used to collect particles on the opposite side of the cleaning plate. Meanwhile, the high-pressure fluid can form a vortex in the collection groove, using density difference to retain particles, thus achieving the effect of cleaning and collecting particles. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the outer casing of the present invention;

[0024] Figure 3 This is a cross-sectional schematic diagram of the overall structure of the present invention;

[0025] Figure 4 This is a schematic front sectional view of the overall structure of the present invention;

[0026] Figure 5 This is a side sectional view of the overall structure of the present invention;

[0027] Figure 6 This is a partial cross-sectional view of the shaft of the present invention;

[0028] Figure 7 This is an exploded view of the shaft of the present invention;

[0029] Figure 8 This is the invention Figure 5 Enlarged structural diagram of region A in the middle;

[0030] Figure 9 This is a side cross-sectional view of the overall structure of the present invention when particulate matter is present;

[0031] Figure 10 This is the invention Figure 9 Enlarged structural diagram of region B in the middle;

[0032] Figure 11 This is a schematic diagram of the overall structure and operating state of the present invention;

[0033] In the diagram: 1. Outer casing; 11. High-pressure port; 12. Low-pressure port; 2. Rotor; 3. Raw water end cap; 4. Concentrate end cap;

[0034] 5. Shaft; 51. Retaining ring; 52. Cleaning rod; 53. Filter screen; 54. Cleaning groove; 55. Cleaning block; 56. Collection groove; 57. Telescopic part; 58. Arc-shaped groove; 59. Throttling orifice; 510. Pressure sensor; 511. Spring; 512. Pressure plate;

[0035] 6. Fluid exchange pipelines; 61. High-pressure raw water pipelines; 62. Low-pressure raw water pipelines; 63. High-pressure concentrate pipelines; 64. Low-pressure concentrate pipelines; 65. Valves; 7. Manifolds. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-11 The present invention provides a technical solution: a fluid pressure exchange device for preventing blockage, comprising two sets of housings 1, a rotor 2, a raw water end cap 3, a concentrated water end cap 4, and a shaft 5. The rotor 2, the raw water end cap 3, the concentrated water end cap 4, and the shaft 5 are all disposed within the two sets of housings 1. The rotor 2 is located between the raw water end cap 3 and the concentrated water end cap 4. The two end faces of the rotor 2 are respectively connected to the end faces of the raw water end cap 3 and the concentrated water end cap 4. The rotor 2 has an axial through hole I at its center, and several through holes II are disposed along the radial direction of the through hole I. The shaft 5 is placed in the through hole I of the rotor 2. The rotor 2 and the shaft 5 are rotatably connected, and thus the rotor 2 rotates around the center line of the shaft 5.

[0038] It should be noted that a piston is installed inside the through hole 2 of rotor 2, which is not shown in the figure. The rotation of rotor 2 is achieved by fluid self-driving, which is existing technology and will not be elaborated on here.

[0039] Specifically, such as Figure 2 and 3 As shown, at least two openings are provided on the raw water end cap 3 and the concentrate end cap 4 respectively, and a sealing area is provided between the two openings on the raw water end cap 3 and the concentrate end cap 4.

[0040] Specifically, such as Figures 2-4 As shown, the outer casing 1 is provided with a high-pressure port 11 and a low-pressure port 12. The high-pressure ports 11 and low-pressure ports 12 on the two sets of outer casing 1 correspond to the positions of the two openings provided on the raw water end cap 3 and the concentrate end cap 4, respectively, so that the two openings on the raw water end cap 3 become the high-pressure outlet and the low-pressure inlet, respectively, and the two openings on the concentrate end cap 4 become the high-pressure inlet and the low-pressure outlet, respectively, for fluid pressure exchange.

[0041] Specifically, such as Figure 3 and Figure 6 As shown, shaft 5 is a hollow shaft, and a manifold 7 can be installed on shaft 5. Manifold 7 can be a high-pressure supply manifold, connected to the opening on the concentrate end cap 4 or the raw water end cap 3 corresponding to the high-pressure port 11. Manifold 7 can also be a low-pressure fluid receiving manifold and a high-pressure supply manifold. The low-pressure receiving manifold is connected to the opening on the raw water end cap 3 connected to the low-pressure port 12, and the high-pressure supply manifold is connected to the opening on the concentrate end cap 4 connected to the high-pressure port 11, or the low-pressure receiving manifold is connected to the opening on the concentrate end cap 4 connected to the low-pressure port 12. Figure 3The manifold 7 is a high-pressure supply manifold, which is connected to the opening on the concentrate end cap 4 corresponding to the high-pressure port 11.

[0042] Specifically, such as Figures 4-10 As shown, two sets of fixing rings 51 are fixedly connected inside the shaft 5. The two sets of fixing rings 51 are located at both ends inside the shaft 5. Several cleaning rods 52 are fixedly connected between the two sets of fixing rings 51. The several cleaning rods 52 are arranged at equal intervals along the radial direction of the fixing rings 51. A filter screen 53 is arranged around the several cleaning rods 52. The filter screen 53 is located between the several cleaning rods 52 and the shaft 5. The filter screen 53 is rotatably connected to the shaft 5.

[0043] Several sets of cleaning grooves 54 are equidistantly provided on the circumference of the shaft 5. The figure shows four sets. The cleaning grooves 54 are provided through the shaft 5. A cleaning block 55 is provided inside the cleaning groove 54. The cleaning block 55 is rotatably connected to the shaft 5. There is a gap between the cleaning block 55 and the inner wall of the rotor 2. Four sets of collection grooves 56 are also provided on the shaft 5. The collection grooves 56 correspond to the cleaning grooves 54. Each set of collection grooves 56 is a structure of three connected circular holes. The middle circular hole coincides with the position of the cleaning groove 54. The other two circular holes are symmetrical about the position of the cleaning groove 54. At the same time, the collection grooves 56 are also connected to the cleaning grooves 54.

[0044] The cleaning block 55 is circular in the middle and has a protrusion at the top. The cleaning block 55 has arc-shaped slots 58 on both sides. The bottom of the cleaning block 55 is hinged with a telescopic part 57, and the other end of the telescopic part 57 is hinged to the filter screen 53.

[0045] The shaft 5 is provided with several throttling holes 59, which penetrate the shaft 5 and communicate with the hollow interior of the shaft 5.

[0046] In actual operation, high-pressure concentrate enters the high-pressure concentrate pipeline 63, and then enters the through hole two of the rotor 2 through the high-pressure port 11 on the outer shell 1 near the concentrate end cap 4 and the corresponding opening on the concentrate end cap 4. This generates a tangential force on the channel wall of the through hole two, pushing the rotor 2 to rotate. The rotation of the rotor 2 is automatically adjusted by the fluid pressure difference, exchanging low-pressure raw water for high-pressure raw water, so that the high-pressure raw water is discharged from the high-pressure concentrate pipeline 63.

[0047] By connecting the manifold 7 to the opening on the concentrate end cap 4 corresponding to the high-pressure port 11, the fluid, due to its high pressure, can enter the shaft 5. At this time, if... Figure 5 and Figure 8 The bottom of the cleaning block 55 seals the cleaning groove 54. The fluid inside the hollow shaft 5 can only be filtered by the filter screen 53 and then injected into the space between the shaft 5 and the rotor 2 through several throttling holes 59 to form a hydrostatic bearing liquid film, which suspends the rotor and reduces frictional resistance, ensuring smooth rotation. At the same time, the continuously flowing liquid carries away particulate matter and prevents crystallization and jamming, achieving a self-cleaning effect between the shaft 5 and the rotor 2.

[0048] If there are particulate matter between shaft 5 and rotor 2 that cannot be carried away by the liquid, such as Figure 9 and 10 As shown, since the rotor 2 rotates around the center line of the shaft 5, and the flowing liquid washes away the particles, the particles move between the rotor 2 and the shaft 5. When the particles come into contact with the cleaning block 55, they create a certain resistance, causing the cleaning block 55 to rotate around the point of rotational connection with the outer casing 1. The bottom of the cleaning block 55 releases the block from the cleaning groove 54. Since the two ends of the telescopic part 57 are hinged to the cleaning block 55 and the filter screen 53 respectively, and the hinge position between the telescopic part 57 and the filter screen 53 is fixed, the filter screen 53 can be driven to rotate around the inner cavity of the shaft 5. This allows the four sets of cleaning blocks 55 to rotate simultaneously around the hinge with the shaft 5. Since the positions of the two sets of fixing rings 51 are fixed, and the positions of the cleaning rods 52 on the fixing rings 51 are fixed, the cleaning rods 52 can clean the inner wall of the filter screen 53 when the filter screen 53 rotates, thereby preventing the filter screen 53 from becoming clogged. This prevents particles in the raw water from clogging the throttling hole 59 or entering between the shaft 5 and the rotor 2 through the throttling hole 59, causing mechanical jamming between the shaft 5 and the rotor 2, resulting in a surge in the rotational torque of the rotor 2, causing the rotor 2 to seize up, thus achieving the self-cleaning effect of the filter screen 53.

[0049] At this time, the fluid inside the hollow shaft 5 can enter the arc-shaped slot 58 and collection slot 56 of the cleaning block 55 through the cleaning groove 54 under its own pressure. The fluid injected from the throttling hole 59 on the shaft 5 into the space between the shaft 5 and the rotor 2 is reduced, that is, the fluid pressure injected into the space between the shaft 5 and the rotor 2 is reduced. The fluid located between the collection slot 56 and the arc-shaped slot 58 can generate a force on the cleaning block 55 in the opposite direction to the rotation caused by the resistance of the particulate matter, causing the cleaning block 55 to rotate in the opposite direction. At the same time, since there will be a certain gap between the cleaning block 55 and the inner wall of the rotor 2, the fluid flowing out from between the collection slot 56 and the arc-shaped slot 58 can move along the cleaning block 55. The gap between the cleaning block 55 and the rotor 2, and the flow on the side of the cleaning block 55 where there are particles, impact the particles into the cleaning groove 54. The particles enter the arc-shaped groove 58 on the side above the cleaning block 55. After that, the fluid volume and pressure on both sides of the cleaning block 55 tend to be resolved. The cleaning block 55 rotates in the opposite direction, confining the particles located at the arc-shaped groove 58 between the arc-shaped groove 58 and the collection groove 56. Since the collection groove 56 is three circular holes connected, a vortex is generated when the fluid enters the collection groove 56. At the same time, the fluid density is different from the particle density, so the particles will not be flushed out of the collection groove 56, thus achieving the effect of collecting the particles between the shaft 5 and the rotor 2.

[0050] Furthermore, such as Figure 4 and Figure 7As shown, a pressure sensor 510, a spring 511, and a pressure plate 512 are installed inside the shaft 5. The pressure sensor 510 is located at the end inside the shaft 5, between one set of fixing rings 51 and the end of the shaft 5. The spring 511 is located between the pressure sensor 510 and the pressure plate 512. The two ends of the spring 511 are fixedly connected to the pressure sensor 510 and the pressure plate 512 respectively. The outer diameter of the pressure plate 512 matches the hollow inner diameter of the shaft 5. The pressure plate 512 is slidably connected to the shaft 5.

[0051] The pressure sensor 510 is electrically connected to the acquisition and analysis module. The pressure plate 512 is used to withstand the impact of fluid entering the hollow interior of the shaft 5 through the manifold 7. The force of the impact is amplified by the spring 511. The pressure sensor 510 detects the force of the fluid impacting the pressure plate 512. The acquisition and analysis module obtains the force detected by the pressure sensor 510 and performs comparative analysis to determine the situation of fluid entering the interior of the shaft 5 and the usage of the fluid pressure exchange device when exchanging fluid pressure.

[0052] Specifically, such as Figure 11 As shown, several sets of fluid pressure exchange devices are connected to fluid exchange pipes 6, which then input fluid to shaft 5 and then to rotor 2. The exchange pipes 6 include a high-pressure raw water pipe 61, a low-pressure raw water pipe 62, a high-pressure concentrate pipe 63, a low-pressure concentrate pipe 64, and several valves 65. The high-pressure port 11 on the outer shell 1 near the raw water end cap 3 is connected to the high-pressure raw water pipe 61, the low-pressure port 12 on the outer shell 1 near the raw water end cap 3 is connected to the low-pressure raw water pipe 62, the high-pressure port 11 on the outer shell 1 near the concentrate end cap 4 is connected to the high-pressure concentrate pipe 63, and the high-pressure port 11 on the outer shell 1 near the concentrate end cap 4 is connected to the low-pressure concentrate pipe 64. Several valves 65 are respectively installed on the pipes of the fluid pressure exchange devices and the high-pressure raw water pipes 61, 62, 63, and 64. The valves 65 are used to control the raw water and concentrate to enter the rotor 2 through the same set of outer shells 1 for fluid pressure exchange.

[0053] Several valves 65 are electrically connected to the data acquisition and analysis module.

[0054] In actual operation, due to the fluctuations in fluid flow, the impact on the pressure plate 512 when the high-pressure working fluid enters the cavity of shaft 5 will also fluctuate. The pressure value of pressure sensor 510 will change. The acquisition and analysis module records the instantaneous pressure value and the maximum difference between the pressure fluctuation per unit time. The instantaneous pressure value is denoted as f, and the maximum difference between the pressure fluctuation per unit time is denoted as Δf. The maximum difference between the pressure fluctuation is the difference between the maximum actual pressure value and the minimum actual pressure value per unit time. The specific unit time is set manually, which can be one minute. Then Δf is the maximum difference of the pressure fluctuation detected within that minute.

[0055] The acquisition and analysis module is set with the minimum allowable pressure value and the allowable range of change of the working fluid entering the shaft 5 as the pressure difference range. The minimum pressure value is denoted as F. When the instantaneous pressure value f > the minimum pressure value F, the fluid pressure exchange device is normal. The pressure difference range is denoted as ΔF1-ΔF2. ΔF1 is the minimum allowable fluctuation. ΔF1 approaches 0 but is not equal to 0. ΔF2 is the maximum allowable fluctuation. When Δf∈(ΔF1, ΔF2), the fluid can normally enter the hollow interior of the shaft 5.

[0056] The data acquisition and analysis module also sets a threshold number of abnormalities based on the actual number of fluid pressure exchange devices connected to the fluid exchange pipeline 6. The threshold number is denoted as N. When the threshold is exceeded, the data acquisition and analysis module controls the corresponding operation and issues an alarm.

[0057] When f>F and Δf∈(ΔF1, ΔF2), the fluid pressure exchange device is operating normally. In other cases, it is operating abnormally. The data acquisition and analysis module counts the fluid pressure exchange devices that are operating abnormally, and the count value is n.

[0058] When f>F, When the fluid can enter the hollow interior of shaft 5 normally, but the fluid is unstable inside shaft 5, and when Δf = 0, there is a blockage inside shaft 5, which causes the data detected by pressure sensor 510 to stop changing, and the acquisition and analysis module will issue an alarm.

[0059] When f≤F and Δf∈(ΔF1, ΔF2), the pressure of the fluid entering the hollow interior of shaft 5 is small, but it is relatively stable when entering the hollow interior of 5.

[0060] When f≤F, When the pressure inside the hollow shaft 5 is low, the fluid is unstable. When Δf = 0, there is a blockage inside the shaft 5, which causes the data detected by the pressure sensor 510 to stop changing, and the acquisition and analysis module will issue an alarm.

[0061] The acquisition and analysis module simultaneously counts cases where the pressure inside the hollow shaft 5 is low when f≤F, and the count value is m.

[0062] When n≤N, the data acquisition and analysis module only issues an alarm and does not perform any further operations.

[0063] When n>N, if m>n, the acquisition and analysis module controls the valve 65 on the pipe connected to the fluid exchange pipe 6 of the fluid pressure exchange device that is operating abnormally to close, thereby reducing the number of operating fluid pressure exchange devices. The actual reduction is 0.5m rounded up. In this way, by reducing the number of fluid pressure exchange devices connected to the fluid exchange pipe 6, the pressure of the fluid in the fluid exchange pipe 6 when it flows through the remaining fluid pressure exchange devices is increased, ensuring that f>F in the remaining fluid pressure exchange devices, thereby ensuring the normal operation of the remaining fluid pressure exchange devices.

[0064] If m≤n, the acquisition and analysis module first controls the valve 65 on the fluid pressure exchange device with Δf=0 to close the valve 65 on the fluid exchange pipeline 6. This reduces the number of operating fluid pressure exchange devices and the number of fluid pressure exchange devices connected to fluid exchange pipeline 6. It also increases the pressure of the fluid in fluid exchange pipeline 6 when it flows through the remaining fluid pressure exchange devices, ensuring the normal operation of the remaining fluid pressure exchange devices. At the same time, since the fluid pressure exchange device with Δf=0 no longer performs fluid pressure exchange, the staff can directly carry out maintenance by disassembly and replacement.

[0065] If the valve 65 on the pipe connected to the fluid exchange pipeline 6 of the fluid pressure exchange device with Δf=0 is closed, and there is no fluid pressure exchange device with Δf=0, then the acquisition and analysis module controls the valve 65 on the pipe connected to the fluid exchange pipeline 6 of the abnormally operating fluid pressure exchange device to close, reducing the number of operating fluid pressure exchange devices. The actual reduction is rounded down by 0.5m. In this way, by reducing the number of fluid pressure exchange devices connected to the fluid exchange pipeline 6, the pressure of the fluid flowing through the remaining fluid pressure exchange devices in the fluid exchange pipeline 6 is increased, thereby ensuring the normal operation of the remaining fluid pressure exchange devices.

[0066] It should be noted that the fluid pressure exchange device that the acquisition and analysis module first controls to close the valve 65 on the pipeline connected to the fluid exchange pipeline 6 is the one or more fluid pressure exchange devices with the largest deviation between f and F and the largest deviation between Δf and ΔF1, ΔF2 among the counted fluid pressure exchange devices; when controlling the closure of fluid pressure exchange devices with Δf = 0, it is preferable to close them one by one.

[0067] By using the above methods, blockage of shaft 5 and rotor 2 can be prevented, the fluid pressure exchange device can maintain high energy efficiency, and long-term maintenance-free operation can be achieved, thereby improving the operational stability of the fluid pressure exchange device.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clog-resistant fluid pressure exchange device, comprising two sets of housings (1), a rotor (2), a raw water end cap (3), a concentrated water end cap (4), and a shaft (5), characterized in that, The rotor (2), raw water end cap (3), concentrate end cap (4), and shaft (5) are all housed in two sets of outer shells (1). The rotor (2) is located between the raw water end cap (3) and the concentrate end cap (4). The two end faces of the rotor (2) are respectively connected to the end faces of the raw water end cap (3) and the concentrate end cap (4). The rotor (2) has an axial through hole I at its center, and several through holes II are arranged along the radial direction of the through hole I. The shaft (5) is placed in the through hole I of the rotor (2). The rotor (2) is rotatably connected to the shaft (5), and the rotor (2) rotates around the center line of the shaft (5). The shaft (5) is a hollow shaft. Several sets of cleaning grooves (54) are equidistantly opened in the circumferential direction of the shaft (5). The cleaning grooves (54) are arranged through the shaft (5). A cleaning block (55) is arranged inside the cleaning groove (54). The cleaning block (55) is rotatably connected to the shaft (5). There is a gap between the cleaning block (55) and the inner wall of the rotor (2). Four sets of collection grooves (56) are also opened on the shaft (5). The collection grooves (56) correspond to the cleaning grooves (54). Each set of collection grooves (56) is a three-connected circular hole structure. The middle circular hole coincides with the position of the cleaning groove (54). The other two circular holes are symmetrical about the cleaning groove (54). At the same time, the collection grooves (56) are also connected to the cleaning grooves (54). The cleaning block (55) is circular in the middle and has a protrusion at the top. Arc-shaped slots (58) are provided on both sides of the cleaning block (55).

2. The anti-clogging fluid pressure exchange device according to claim 1, characterized in that, Two openings are provided on the raw water end cap (3) and the concentrate end cap (4), and a sealing area is provided between the two openings on the raw water end cap (3) and the concentrate end cap (4).

3. The anti-clogging fluid pressure exchange device according to claim 2, characterized in that, The outer shell (1) is provided with a high pressure port (11) and a low pressure port (12). The high pressure port (11) and the low pressure port (12) on the two sets of the outer shell (1) correspond to the positions of the two openings provided on the raw water end cap (3) and the concentrated water end cap (4), respectively.

4. The anti-clogging fluid pressure exchange device according to claim 3, characterized in that, A manifold (7) is provided on the shaft (5). The manifold (7) is a high-pressure supply manifold and is connected to the opening on the concentrate end cap (4) corresponding to the high-pressure port (11).

5. The anti-clogging fluid pressure exchange device according to claim 4, characterized in that, Two sets of fixing rings (51) are fixedly connected inside the shaft (5). The two sets of fixing rings (51) are located at both ends inside the shaft (5). A plurality of cleaning rods (52) are fixedly connected between the two sets of fixing rings (51). The plurality of cleaning rods (52) are arranged at equal intervals along the radial direction of the fixing rings (51). A filter screen (53) is arranged around the plurality of cleaning rods (52). The filter screen (53) is located between the plurality of cleaning rods (52) and the shaft (5). The filter screen (53) is rotatably connected to the shaft (5).

6. The anti-clogging fluid pressure exchange device according to claim 5, characterized in that, The bottom of the cleaning block (55) is hinged with a telescopic part (57), and the other end of the telescopic part (57) is hinged to the filter screen (53).

7. The anti-clogging fluid pressure exchange device according to claim 6, characterized in that, The shaft (5) is provided with a plurality of throttling holes (59), which penetrate the shaft (5) and communicate with the hollow interior of the shaft (5).

8. The anti-clogging fluid pressure exchange device according to claim 7, characterized in that, The shaft (5) is internally equipped with a pressure sensor (510), a spring (511), and a pressure plate (512). The pressure sensor (510) is located at the end of the shaft (5), between one of the fixed rings (51) and the end of the shaft (5). The spring (511) is located between the pressure sensor (510) and the pressure plate (512). The two ends of the spring (511) are fixedly connected to the pressure sensor (510) and the pressure plate (512) respectively. The outer diameter of the pressure plate (512) matches the inner hollow diameter of the shaft (5). The pressure plate (512) is slidably connected to the shaft (5).

9. The anti-clogging fluid pressure exchange device according to claim 8, characterized in that, The pressure sensor (510) is electrically connected to the acquisition and analysis module. The pressure plate (512) is used to withstand the impact of fluid entering the hollow interior of the shaft (5) through the manifold (7). The force of the impact is amplified by the spring (511). The pressure sensor (510) detects the force of the fluid impacting the pressure plate (512). The acquisition and analysis module obtains the instantaneous pressure value f detected by the pressure sensor (510) and the maximum difference Δf of the pressure fluctuation per unit time. Combined with the minimum allowable pressure value F of the working fluid entering the shaft (5) and the allowable change range ΔF1-ΔF2 set inside the acquisition and analysis module, the situation of fluid entering the shaft (5) and the usage of the fluid pressure exchange device when performing fluid pressure exchange are determined.

10. The anti-clogging fluid pressure exchange device according to claim 9, characterized in that, Several sets of the fluid pressure exchange devices are connected to fluid exchange pipes (6), and fluid is then input to the shaft (5) and then to the rotor (2) through the fluid exchange pipes (6); The exchange pipeline (6) includes a high-pressure raw water pipeline (61), a low-pressure raw water pipeline (62), a high-pressure concentrate pipeline (63), a low-pressure concentrate pipeline (64), and several valves (65). The high-pressure port (11) on the outer shell (1) near the raw water end cap (3) is connected to the high-pressure raw water pipeline (61). The low-pressure port (12) on the outer shell (1) near the raw water end cap (3) is connected to the low-pressure raw water pipeline (62). The high-pressure port (11) on the outer shell (1) near the concentrate end cap (4) is connected to the high-pressure concentrate pipeline (63). The high-pressure port (11) on the outer shell (1) near the concentrate end cap (4) is connected to the low-pressure concentrate pipeline (64). Several valves (65) are respectively installed on the pipelines of the high-pressure raw water pipeline (61), low-pressure raw water pipeline (62), high-pressure concentrate pipeline (63), and low-pressure concentrate pipeline (64) of the fluid pressure exchange device. Several of the valves (65) are electrically connected to the data acquisition and analysis module.

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