Electromagnetic Flow Pulsation Generator

Abstract

The present invention provides an electromagnetic flow pulsation generator, which relates to the technical field of experimental research on the dynamic characteristics of nozzle injection in liquid rocket engines. After the coil winding fixed in the magnetic field is energized, since the coil winding is fixed on the confluence fluid module, the rotor module is forced to rotate. The through hole of the rotor periodically coincides with the liquid channel and the confluence channel, and the liquid periodically enters the confluence channel, generating a flow pulsation of the liquid, so as to cause pulsations in the flow rate and pressure of the supplied liquid, and provide it to the nozzle under the back-pressure environment, and then conduct a dynamic injection experiment. Compared with the traditional mechanical shaft drive, since the shaft needs to extend out of the whole, the overall sealing performance is poor. However, the cooperation of the rotor module and the coil winding avoids the use of a mechanical transmission shaft and can improve the overall sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental research on the dynamic characteristics of nozzle injection in liquid rocket engines, and in particular to an electromagnetic flow pulsation generator. Background Art

[0002] In the development of liquid rocket engines, combustion instability problems are often encountered. With the increase in energy density in space propulsion systems, once combustion instability occurs, its destructiveness to the combustion chamber structure also increases, and in severe cases, it can cause damage to the entire thrust system. The chamber pressure of a liquid rocket engine combustion chamber can reach several megapascals or even more than ten megapascals, and new generation large-thrust rockets and heavy-lift launch vehicles all use cryogenic fluid propellants, such as liquid oxygen / methane, liquid hydrogen / liquid oxygen. Research shows that medium- and low-frequency unstable combustion is often related to the flow oscillation of the propellant supply system and pipelines. Therefore, it is very necessary to study the dynamic characteristics of the nozzle injecting cryogenic fluid in a high back-pressure environment when the liquid rocket engine undergoes unstable combustion. At this time, the nozzle needs to be placed in a back-pressure chamber to carry out experimental research on the dynamic characteristics of injecting cryogenic fluid. Among them, the flow pulsation generator is a very important experimental device for generating flow oscillation to simulate the flow pulsation in the propellant supply system.

[0003] Chinese patent application with publication number CN102410288A discloses a generator for generating pulsating flow in a high back-pressure environment. An electric vibrator generates an exciting force with a certain frequency and transmits it to a drive rod; the drive rod is used to transmit the exciting force to a rigid oscillation tube and drive the rigid oscillation tube to generate reciprocating movement; the liquid flow rate and pressure in the rigid oscillation tube oscillate at a certain frequency during the reciprocating displacement of the rigid oscillation tube, and form pulsating flow to be output from the liquid outlet pipeline.

[0004] However, the above traditional pulsating flow generator adopts a mechanical shaft drive method, and the mechanical shaft needs to extend out of the housing and be connected to an external drive device, resulting in poor sealing at the position where the mechanical shaft extends, affecting the overall sealing performance. Summary of the Invention

[0005] The purpose of the present invention is to provide an electromagnetic flow pulsation generator to alleviate the technical problem in the prior art that the traditional pulsating flow generator adopts a mechanical shaft drive method, and the mechanical shaft needs to extend out of the housing and be connected to an external drive device, resulting in poor sealing at the position where the mechanical shaft extends, affecting the overall sealing performance.

[0006] The electromagnetic flow pulsation generator provided by the present invention includes: a liquid collecting cavity structure, a fluid collecting module, and a rotor module;

[0007] The liquid collection cavity structure is provided with a liquid channel, and the current collector module is coaxially installed at the center of the liquid collection cavity structure. The current collector module is provided with a current collection channel;

[0008] The rotor module is rotatably installed between the liquid collection cavity structure and the current collector module, and the rotor module is provided with a rotor through hole for communicating the current collection channel and the liquid channel;

[0009] The current collector module is wound with a coil winding, and the coil winding is placed in the magnetic field generated by the rotor module. The coil winding is configured to drive the rotor module to rotate after being energized, so that the rotor through hole periodically communicates with the current collection channel and the liquid channel.

[0010] In an alternative embodiment,

[0011] The liquid collection cavity structure includes a base, a liquid inlet cavity and the liquid channel;

[0012] The base is an annular structure, and the base is provided with the vertically arranged liquid inlet cavity. The liquid inlet cavity is an annular cavity, and a plurality of liquid channels of the same size and evenly arranged are opened on the inner wall of the liquid inlet cavity in the radial direction;

[0013] The calculation formula for the diameter dimension d of the liquid channel is:

[0014]

[0015] where Q is the flow rate of the flow pulsation generator, n is the number of liquid channels, and v is the flow velocity of the liquid in the liquid channel.

[0016] In an alternative embodiment,

[0017] The liquid collection cavity structure further includes a first threaded hole and a first screw hole;

[0018] A plurality of the first threaded holes are evenly arranged at the upper and lower ends of the base;

[0019] A plurality of the first screw holes are evenly arranged on the inner annular side wall of the base, and a plurality of the first screws are symmetrically distributed in upper and lower layers on the upper and lower sides of the liquid channel.

[0020] In an alternative embodiment,

[0021] The current collector module includes a coil winding, a coil channel, a current collection channel, and a liquid outlet pipeline;

[0022] The current collection channel is evenly opened on the cylindrical section of the current collector module body in the radial direction, and is distributed in a radial line shape, and the size and number of the current collection channels are the same as those of the liquid channels;

[0023] The liquid outlet pipeline is perpendicular to the plurality of confluence channels, and the lower end of the liquid outlet pipeline communicates with the confluence area of the confluence channels;

[0024] The confluence body module body is provided with a coil channel, the coil channel penetrates through the confluence body module body, and the plurality of coil windings are fixedly installed on the confluence body module body through the coil channel and are staggered with the confluence channels.

[0025] In an alternative embodiment,

[0026] The confluence body module further includes a second threaded hole and a second screw hole;

[0027] The second threaded holes are uniformly arranged at the upper and lower ends of the confluence body module body, and the second screw holes are uniformly arranged on the outer wall of the confluence body module body, and the distribution positions correspond to the first screw holes one by one.

[0028] In an alternative embodiment,

[0029] The rotor module includes a permanent magnet rotor and a ceramic rotor;

[0030] The permanent magnet rotor is made of two arc-shaped permanent magnets with opposite inner polarities, the ceramic rotor is made of two identical arc-shaped ceramics, the radian of the ceramic rotor is the same as that of the permanent magnet rotor, the ceramic rotor and the permanent magnet rotor are connected by an adhesive to form an annular rotor, and the rotor through holes are uniformly opened in the radial direction, and the size and number of the rotor through holes are the same as those of the liquid channels.

[0031] In an alternative embodiment,

[0032] The rotor module includes a first bearing, a second bearing, a first sealing sleeve, a second sealing sleeve, a rotor through hole, a rotor shoulder and a set screw;

[0033] Rotor shoulders are arranged at both the upper and lower ends of the permanent magnet rotor and the ceramic rotor, and the first bearing and the second bearing are respectively installed on the outer and inner sides of the rotor shoulders at the upper and lower ends;

[0034] The first sealing sleeve sleeves the second sealing sleeve, and the permanent magnet rotor and the ceramic rotor are clamped between the first sealing sleeve and the second sealing sleeve. The first sealing sleeve and the second sealing sleeve are both provided with uniformly distributed through holes in the radial direction, and the size and number of the through holes are the same as those of the liquid channels;

[0035] The outer wall of the first sealing sleeve is connected to the first screw hole by a set screw, and the inner wall of the second sealing sleeve is connected to the second screw hole by a set screw.

[0036] In an alternative embodiment,

[0037] The electromagnetic flow pulsation generator further includes a top cover module, and the body of the top cover module covers the liquid collection cavity structure;

[0038] The top cover module includes a first sealing gasket, a second sealing gasket, bolts, nuts, and a liquid inlet pipeline;

[0039] The liquid inlet pipeline is located at the upper end of the body of the top cover module;

[0040] The first sealing gasket and the second sealing gasket are clamped between the body of the top cover module and the liquid collection cavity structure, and the body of the top cover module and the liquid collection cavity structure are connected by bolts and nuts.

[0041] In an alternative embodiment,

[0042] The electromagnetic flow pulsation generator further includes a sealing module;

[0043] The sealing module includes an upper end cover, a lower end cover, a third sealing gasket, a fourth sealing gasket, and connecting bolts;

[0044] The ends of the upper end cover and the lower end cover press the first bearing and the second bearing, and the upper end cover and the lower end cover are respectively fastened to the upper and lower ends of the liquid collection cavity structure and the fluid collecting module by the connecting bolts;

[0045] The upper end cover and the lower end cover are sealed with the liquid collection cavity structure through the third sealing gasket, and the upper end cover and the lower end cover are sealed with the fluid collecting module through the fourth sealing gasket.

[0046] In an alternative embodiment,

[0047] The sealing module further includes a sealing felt ring;

[0048] A central hole is formed in the center of the upper end cover, the liquid outlet pipeline passes through the central hole, and the sealing felt ring is arranged between the central hole and the liquid outlet pipeline to seal the liquid outlet pipeline.

[0049] The electromagnetic flow pulsation generator provided by the present invention, after the coil winding fixed in the magnetic field is energized, since the coil winding is fixed on the fluid collecting module, the rotor module is forced to rotate. The through hole of the rotor periodically coincides with the liquid channel and the fluid collecting channel, and the liquid periodically enters the fluid collecting channel, generating a flow pulsation of the liquid, so as to generate pulsations of the flow rate and pressure of the supplied liquid, and supply them to the nozzle in the back-pressure environment, and then conduct dynamic injection experiments. Compared with the traditional mechanical shaft drive, since the shaft needs to extend out of the whole body, the overall sealing performance is poor. However, the cooperation of the rotor module and the coil winding avoids the use of a mechanical transmission shaft, which can increase the overall sealing performance and alleviate the technical problem existing in the prior art that the traditional pulsating flow generator uses a mechanical shaft drive, and the mechanical shaft needs to extend out of the shell and be connected to an external driving device, resulting in poor sealing performance at the extending position of the mechanical shaft and affecting the overall sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0051] Figure 1 It is a sectional view of the overall structure of the electromagnetic flow pulsation generator provided by the embodiment of the present invention;

[0052] Figure 2 It is a schematic diagram of the overall structure of the electromagnetic flow pulsation generator provided by the embodiment of the present invention;

[0053] Figure 3 It is a schematic plan view of the electromagnetic flow pulsation generator provided by the embodiment of the present invention;

[0054] Figure 4 is Figure 3 the sectional view taken along A-A in

[0055] Figure 5 It is a schematic diagram of the structure of the rotor module in the electromagnetic flow pulsation generator provided by the embodiment of the present invention;

[0056] Figure 6 It is a schematic diagram of the structure of the fluid collecting module in the electromagnetic flow pulsation generator provided by the embodiment of the present invention;

[0057] Figure 7 It is a schematic diagram of the structure of the coil winding in the electromagnetic flow pulsation generator provided by the embodiment of the present invention.

[0058] Icons: 1 - Liquid collection cavity structure; 11 - Base; 12 - Liquid collection cavity; 13 - Liquid channel; 14 - First threaded hole; 15 - First screw hole; 2 - Current collector module; 21 - Coil winding; 22 - Coil channel; 23 - Current collection channel; 24 - Liquid outlet pipeline; 25 - Second threaded hole; 26 - Second screw hole; 3 - Rotor module; 31 - Permanent magnet rotor; 32 - Ceramic rotor; 33 - First bearing; 34 - Second bearing; 35 - First sealing sleeve; 36 - Second sealing sleeve; 37 - Rotor through hole; 38 - Rotor shoulder; 39 - Set screw; 4 - Top cover module; 41 - First sealing gasket; 42 - Second sealing gasket; 43 - Bolt; 44 - Nut; 45 - Liquid inlet pipeline; 5 - Sealing module; 51 - Upper end cover; 52 - Lower end cover; 53 - Third sealing gasket; 54 - Fourth sealing gasket; 55 - Connecting bolt; 56 - Sealing felt ring. Detailed implementation

[0059] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0060] As Figures 1-7 shown, the electromagnetic flow pulsation generator provided in this embodiment includes: a liquid collection cavity structure 1, a current collector module 2, and a rotor module 3; the liquid collection cavity structure 1 is provided with a liquid channel 13, the current collector module 2 is coaxially installed at the center of the liquid collection cavity structure 1, and the current collector module 2 is provided with a current collection channel 23; the rotor module 3 is rotatably installed between the liquid collection cavity structure 1 and the current collector module 2, and the rotor module 3 is provided with a rotor through hole 37 for communicating the current collection channel 23 and the liquid channel 13; the current collector module 2 is wound with a coil winding 21, and the coil winding 21 is placed in the magnetic field generated by the rotor module 3. The coil winding 21 is configured to drive the rotor module 3 to rotate after being energized, so that the rotor through hole 37 periodically communicates with the current collection channel 23 and the liquid channel 13.

[0061] The electromagnetic flow pulsation generator provided in this embodiment, after the coil winding 21 fixed in the magnetic field is energized, since the coil winding 21 is fixed on the fluid collecting module 2, the rotor module 3 is forced to rotate. The rotor through-hole 37 periodically coincides with the liquid channel 13 and the fluid collecting channel 23, and the liquid periodically enters the fluid collecting channel 23, generating a flow pulsation of the liquid, so as to generate pulsations of the flow rate and pressure of the supplied liquid, which is provided to the nozzle in the back-pressure environment, and then a dynamic injection experiment is carried out. Compared with the traditional mechanical shaft drive, since the shaft needs to extend out of the whole, the overall sealing performance is poor. However, the cooperation of the rotor module 3 and the coil winding 21 avoids the use of the mechanical transmission shaft, which can increase the overall sealing performance and alleviate the technical problem existing in the prior art that the traditional pulsating flow generator uses the mechanical shaft drive method, and the mechanical shaft needs to extend out of the housing and be connected to the external driving device, resulting in poor sealing performance at the extending position of the mechanical shaft and affecting the overall sealing performance.

[0062] Regarding the structure and shape of the liquid collecting cavity structure 1, specifically:

[0063] As Figure 1 shown, the liquid collecting cavity structure 1 includes a base 11, a liquid collecting cavity 12, a liquid channel 13, a first threaded hole 14 and a first screw hole 15. The base 11 is an annular structure and serves as the overall base. The liquid collecting cavity 12 opened in the base 11 is an annular cavity, and a plurality of liquid channels 13 with the same size and evenly arranged are opened on its inner wall in the radial direction. The diameter d of the liquid channel 13 can be determined by the formula where Q is the flow rate of the flow pulsation generator, n is the number of the liquid channels 13, and v is the flow velocity of the liquid in the liquid channel 13; as Figure 2 shown, the middle part of the base 11 is recessed downward in a stepped shape. The first threaded holes 14 are evenly arranged on the top of the inner step of the base 11. A plurality of first screw holes 15 are evenly arranged on the inner annular side wall of the base 11 and are symmetrically distributed in the upper and lower layers on the upper and lower sides of the liquid channel 13. The sleeve outside the rotor module 3 is fixed on the inner wall of the base 11 by using the first screw holes 15.

[0064] Regarding the structure and shape of the fluid collecting module 2, specifically:

[0065] As Figure 5As shown in the figure, the current collector module 2 includes a coil winding 21, a coil channel 22, a current collecting channel 23, a liquid outlet pipeline 24, a second threaded hole 25, and a second screw hole 26; the body of the current collector module 2 is a circular ring structure, and the middle position of the outer wall of the body of the current collector module 2 protrudes outward to form a shoulder of the body of the current collector module 2, and this shoulder is flush with the shoulder of the rotor module 3 for supporting the bearing; the current collecting channel 23 is uniformly opened in the cylindrical section of the body of the current collector module 2 along the radial direction, and is distributed in a radial line shape, and its size and quantity are the same as those of the liquid channel 13; the direction of the liquid outlet pipeline 24 is vertically upward, perpendicular to the several current collecting channels 23 opened, and its lower end is connected to the confluence area of the current collecting channels 23, so that the liquid in the multiple current collecting channels 23 converges into the liquid outlet pipeline 24.

[0066] A plurality of through holes are opened at the middle position of the body of the current collector module 2, and the plurality of through holes form the coil channel 22. Several strands of the coil winding 21 pass through the coil channel 22, and thus the coil winding 21 can be installed on the body of the current collector module 2. The coil winding 21 and the current collecting channel 23 intersect with each other, as Figure 7 shown in the figure. The winding method of the coil winding 21 is cross and evenly annular distribution; the second threaded holes 25 are uniformly arranged at the upper and lower ends of the body of the current collector module 2, and the second screw holes 26 are uniformly arranged on the outer wall of the body of the current collector module 2, and the distribution positions correspond to the first screw holes 15 one by one. The sleeve outside the rotor module 3 is fixed on the outer wall of the body of the current collector module 2 by using the second screw holes 26.

[0067] Regarding the structure and shape of the rotor module 3, specifically:

[0068] The rotor module 3 includes a permanent magnet rotor 31, a ceramic rotor 32, a first bearing 33, a second bearing 34, a first sealing sleeve 35, a second sealing sleeve 36, a rotor through hole 37, a rotor shoulder 38, and a set screw 39. The permanent magnet rotor 31 is made of two circular arc-shaped permanent magnets with opposite polarities on the inner side, and the two permanent magnets with opposite polarities are arranged opposite to each other. A ceramic rotor 32 is arranged between the two permanent magnets. The ceramic rotor 32 is made of two identical circular arc-shaped ceramics, and its radian is the same as that of the permanent magnet rotor 31. The ceramic rotor 32 and the permanent magnet rotor 31 are connected by an adhesive to form a circular ring-shaped rotor, and the surface finish of both the inner and outer sides is relatively high, and rotor through holes 37 are uniformly opened along the radial direction. The size and quantity of the rotor through holes 37 are the same as those of the liquid channel 13. By rotating the circular ring-shaped rotor, the rotor through holes 37 can be periodically communicated with the liquid channel 13 and the current collecting channel 23.

[0069] The first bearing 33 and the second bearing 34 are respectively installed on the outer and inner sides of the rotor shoulders 38 at the upper and lower ends, so that the permanent magnet rotor 31 and the ceramic rotor 32 are clamped between the first bearing 33 and the second bearing 34 and can rotate freely.

[0070] The diameter dimension of the first sealing sleeve 35 is larger than that of the second sealing sleeve 36. The permanent magnet rotor 31 and the ceramic rotor 32 are installed in the spaced area between the first sealing sleeve 35 and the second sealing sleeve 36. The first sealing sleeve 35 and the second sealing sleeve 36 are made of polytetrafluoroethylene material and are provided with uniformly distributed through holes in the radial direction, the size and quantity of which are the same as those of the liquid channels 13. The outer wall of the first sealing sleeve 35 extends into the first screw hole 15 through a set screw 39, and the inner wall of the second sealing sleeve 36 extends into the second screw hole 26 through a set screw 39.

[0071] Regarding the structure and shape of the top cover module 4, specifically:

[0072] The top cover module 4 includes a first sealing gasket 41, a second sealing gasket 42, bolts 43, nuts 44 and a liquid inlet pipeline 45; the size of the liquid inlet pipeline 45 is the same as that of the liquid outlet pipeline 24 and is located at the upper end of the top cover module 4 body; the first sealing gasket 41 and the second sealing gasket 42 are sandwiched between the top cover module 4 body and the liquid collecting cavity structure 1, and the top cover module 4 body and the liquid collecting cavity structure 1 are connected by bolts 43 and nuts 44.

[0073] Regarding the structure and shape of the sealing module 5, specifically:

[0074] The sealing module 5 includes an upper end cover 51, a lower end cover 52, a third sealing gasket 53, a fourth sealing gasket 54, connecting bolts 55 and a sealing felt ring 56; the ends of the upper end cover 51 and the lower end cover 52 press the first bearing 33 and the second bearing 34 and are respectively fastened to the upper and lower ends of the first threaded hole 14 and the second threaded hole 25 through the connecting bolts 55; the upper end cover 51 and the lower end cover 52 are respectively sealed with the liquid collecting cavity structure 1 and the body of the current collector module 2 through the third sealing gasket 53 and the fourth sealing gasket 54.

[0075] A central hole is provided in the center of the upper end cover 51, and the liquid outlet pipeline passes through it and is sealed with a sealing felt ring 56.

[0076] The electromagnetic flow pulsation generator provided in this embodiment operates as follows: First, the working fluid liquid is injected into the liquid collecting cavity 12 from the upstream supply system through the liquid inlet pipeline 45. After the liquid collecting cavity 12 is filled with liquid, the coil winding 21 is energized. The energized coil is subjected to a force in the magnetic field formed by the N and S poles of the permanent magnet rotor 31. Since the coil winding 21 is fixed to the body of the fluid collecting module 2, a circumferential reaction force will be generated on the permanent magnet rotor 31, driving the circular rotor to rotate. The rotor through-hole 37 periodically coincides with the liquid passage 13 of the liquid collecting cavity structure 1 and the fluid collecting passage 23 of the fluid collecting module 2, that is, the circular rotor periodically connects the liquid flow passage, causing the downstream liquid to oscillate intermittently. Furthermore, the pulsating liquid flows in each fluid collecting passage 23 converge at the center of the body of the fluid collecting module 2. Finally, the working fluid liquid flows out from the liquid outlet pipeline 24 with a certain flow rate and pressure pulsation, and is supplied to the nozzle in the downstream back-pressure chamber to achieve dynamic injection.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electromagnetic flow pulsation generator, characterized in that, Comprising: A liquid collection cavity structure (1), a current collector module (2), and a rotor module (3); The liquid collection cavity structure (1) is provided with a liquid channel (13), the current collector module (2) is coaxially installed at the center of the liquid collection cavity structure (1), and the current collector module (2) is provided with a current collection channel (23); The rotor module (3) is rotatably installed between the liquid collection cavity structure (1) and the current collector module (2), and the rotor module (3) is provided with a rotor through hole (37) for communicating the current collection channel (23) and the liquid channel (13); The current collector module (2) is wound with a coil winding (21), and the coil winding (21) is placed in the magnetic field generated by the rotor module (3). The coil winding (21) is configured to drive the rotor module (3) to rotate after being energized, so that the rotor through hole (37) periodically communicates with the current collection channel (23) and the liquid channel (13).

2. The electromagnetic flow pulsation generator according to claim 1, wherein The liquid collection cavity structure (1) includes a base (11), a liquid inlet cavity, and the liquid channel (13); The base (11) is an annular structure, the base (11) is provided with the vertically arranged liquid inlet cavity, the liquid inlet cavity is an annular cavity, and a plurality of liquid channels (13) with the same size and evenly arranged are opened on the inner wall of the liquid inlet cavity along the radial direction; The calculation formula for the diameter dimension d of the liquid channel (13) is: Where Q is the flow rate of the flow pulsation generator, n is the number of liquid channels (13), and v is the flow velocity of the liquid in the liquid channel (13).

3. The electromagnetic flow pulsation generator according to claim 2, wherein, The liquid collection cavity structure (1) further includes a first threaded hole (14) and a first screw hole (15); A plurality of the first threaded holes (14) are evenly arranged at the upper and lower ends of the base (11); A plurality of the first screw holes (15) are evenly arranged on the inner annular side wall of the base (11), and a plurality of the first screws are symmetrically distributed in upper and lower layers on the upper and lower sides of the liquid channel (13).

4. The electromagnetic flow pulsation generator according to claim 3, wherein The current collector module (2) includes a coil winding (21), a coil channel (22), a current collection channel (23), and a liquid outlet pipeline (24); The current collection channel (23) is uniformly opened in the cylindrical section of the current collector module (2) body along the radial direction, and is distributed in a radial line shape, and the size and number of the current collection channel (23) are the same as those of the liquid channel (13); The liquid outlet pipeline (24) is perpendicular to the plurality of current collection channels (23), and the lower end of the liquid outlet pipeline (24) is connected to the intersection area of the current collection channels (23); The current collector module (2) body is provided with a coil channel (22), the coil channel (22) penetrates through the current collector module (2) body, and a plurality of the coil windings (21) are fixedly installed on the current collector module (2) body through the coil channel (22), and are staggered with the current collection channel (23).

5. The electromagnetic flow pulsation generator according to claim 4, characterized in that the manifold module (2) further includes a second threaded hole (25) and a second screw hole (26); the second threaded holes (25) are uniformly arranged at the upper and lower ends of the body of the manifold module (2), and the second screw holes (26) are uniformly arranged on the outer wall of the body of the manifold module (2), and the distribution positions correspond one by one to the first screw holes (15).

6. The electromagnetic flow pulsation generator according to claim 5, characterized in that the rotor module (3) includes a permanent magnet rotor (31) and a ceramic rotor (32); the permanent magnet rotor (31) is made of two arc-shaped permanent magnets with opposite inner polarities, the ceramic rotor (32) is made of two identical arc-shaped ceramics, the radian of the ceramic rotor (32) is the same as that of the permanent magnet rotor (31), the ceramic rotor (32) and the permanent magnet rotor (31) are connected by an adhesive to form an annular rotor, and rotor through holes (37) are uniformly opened in the radial direction, and the size and number of the rotor through holes (37) are the same as those of the liquid channels (13).

7. The electromagnetic flow pulsation generator according to claim 6, characterized in that the rotor module (3) includes a first bearing (33), a second bearing (34), a first sealing sleeve (35), a second sealing sleeve (36), rotor through holes (37), rotor shoulders (38) and set screws (39); rotor shoulders (38) are provided at both the upper and lower ends of the permanent magnet rotor (31) and the ceramic rotor (32), and the first bearing (33) and the second bearing (34) are respectively installed on the outer and inner sides of the rotor shoulders (38) at the upper and lower ends; the first sealing sleeve (35) sleeved on the second sealing sleeve (36), and the permanent magnet rotor (31) and the ceramic rotor (32) are clamped between the first sealing sleeve (35) and the second sealing sleeve (36), and the first sealing sleeve (35) and the second sealing sleeve (36) are both provided with uniformly distributed through holes in the radial direction, and the size and number of the through holes are the same as those of the liquid channels (13); the outer wall of the first sealing sleeve (35) is connected to the first screw hole (15) by a set screw (39), and the inner wall of the second sealing sleeve (36) is connected to the second screw hole (26) by a set screw (39).

8. The electromagnetic flow pulsation generator according to claim 1, characterized in that the electromagnetic flow pulsation generator further includes a top cover module (4), and the body of the top cover module (4) covers the liquid collecting cavity structure (1); the top cover module (4) includes a first sealing gasket (41), a second sealing gasket (42), bolts (43), nuts (44) and a liquid inlet pipeline (45); the liquid inlet pipeline (45) is located at the upper end of the body of the top cover module (4); The first sealing gasket (41) and the second sealing gasket (42) are clamped between the body of the top cover module (4) and the liquid collecting cavity structure (1), and the body of the top cover module (4) and the liquid collecting cavity structure (1) are connected by bolts (43) and nuts (44).

9. The electromagnetic flow pulsation generator according to claim 7, characterized in that the electromagnetic flow pulsation generator further comprises a sealing module (5); the sealing module (5) includes an upper end cover (51), a lower end cover (52), a third sealing gasket (53), a fourth sealing gasket (54), and connecting bolts (55); the ends of the upper end cover (51) and the lower end cover (52) press the first bearing (33) and the second bearing (34), and the upper end cover (51) and the lower end cover (52) are respectively fastened to the upper and lower ends of the liquid collecting cavity structure (1) and the fluid collecting module (2) through the connecting bolts (55); the upper end cover (51) and the lower end cover (52) are sealed with the liquid collecting cavity structure (1) through the third sealing gasket (53), and the upper end cover (51) and the lower end cover (52) are sealed with the fluid collecting module (2) through the fourth sealing gasket (54).

10. The electromagnetic flow pulsation generator according to claim 9, characterized in that, The sealing module (5) further includes a sealing felt ring (56); a central hole is formed in the center of the upper end cover (51), the liquid outlet pipeline (24) passes through the central hole, and the sealing felt ring (56) is arranged between the central hole and the liquid outlet pipeline (24) to seal the liquid outlet pipeline (24).

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