Liquid mixer

Abstract

A liquid mixer, each inflow passage communicates with a first cylindrical chamber and extends from the first cylindrical chamber along an axial meridional tangential direction, a first outflow passage communicates with a center of a second axial end wall of the first cylindrical chamber; the first outflow passage communicates with a center of a third axial end wall of a second cylindrical chamber, a central axis of each annular partition plate coincides with a central axis of the second cylindrical chamber, a first annular partition plate protrudes from a fourth axial end wall of the second cylindrical chamber along an axial direction and has an axial interval with the third axial end wall of the second cylindrical chamber, a second annular partition plate protrudes from the third axial end wall of the second cylindrical chamber along an axial direction and has an axial interval with the fourth axial end wall of the second cylindrical chamber, the first annular partition plate and the second annular partition plate are alternately arranged from an inner circumferential side to an outer circumferential side so as to divide a rotation passage in the second cylindrical chamber, a plurality of second outflow passages communicate with ends of the rotation passage on the outer circumferential side and are uniformly distributed along a circumferential direction.

Description

Technical Field

[0001] This invention relates to mixers, and more particularly to a mixer for mixing multiple liquids. Background Technology

[0002] According to the requirements for fuel types in the propulsion systems of Chinese civil aircraft engines, engines should be able to operate under various main fuels and arbitrary mixtures. Therefore, the combustor test chamber should be equipped with a multi-fuel supply system, capable of testing sustainable fuel (SAF) and various grades of aviation kerosene such as RP-3, JET A, and TC-1, meeting the requirements for combustor component-level verification. Currently, combustor performance studies using multiple liquid fuels typically involve pre-mixing fuels according to design requirements in a specific ratio, injecting the mixture into the fuel system's tank, or directly supplying it to the original equipment's fuel system via tank truck, followed by combustor performance tests with a fixed fuel ratio. However, the most flexible, time-saving, and labor-saving method for studying the combustion efficiency, ignition characteristics, stable combustion characteristics, and pollution emission characteristics of two fuels and their arbitrary mixtures is to adjust the mixing ratio of the two fuels online. To adjust the mixing ratio, not only is a multi-fuel supply system required, but also a mixer that meets the mixing requirements of both fuels. The mixing effect of the fuel mixer directly affects the simulation accuracy of the nozzle inlet parameters and has a significant impact on the combustor test results. Summary of the Invention

[0003] The purpose of this invention is to provide a liquid mixer for improving the mixing effect of various fuels.

[0004] According to an embodiment of the present invention, a liquid mixer includes a first mixing chamber and a second mixing chamber; the first mixing chamber includes a first cylindrical chamber, a first outflow channel, and a plurality of inflow channels, each of the inflow channels communicating with the first cylindrical chamber and extending tangentially from the first cylindrical chamber along its axial perpendicular plane, the first outflow channel communicating with the center of the second axial end wall of the first cylindrical chamber, and liquid flowing in from the inflow channels flowing and mixing circumferentially within the first cylindrical chamber before flowing out through the first outflow channel; the second mixing chamber includes a second cylindrical chamber, a plurality of annular baffles, and a plurality of second outflow channels, the first outflow channel communicating with the center of the third axial end wall of the second cylindrical chamber, the central axis of each of the annular baffles coinciding with the central axis of the second cylindrical chamber, and the plurality of annular baffles... The cylindrical partition includes a first annular partition and a second annular partition. The first annular partition extends axially from the fourth axial end wall of the second cylindrical chamber and is axially spaced from the third axial end wall of the second cylindrical chamber. The second annular partition extends axially from the third axial end wall of the second cylindrical chamber and is axially spaced from the fourth axial end wall of the second cylindrical chamber. The first annular partition and the second annular partition are alternately arranged from the inner circumferential side to the outer circumferential side to separate the rotating channel within the second cylindrical chamber. The plurality of second outflow channels connect to the outer circumferential end of the rotating channel and are evenly distributed circumferentially. Liquid flowing into the second cylindrical chamber from the first outflow channel flows in the rotating channel, generates vortex mixing, and then flows out through the second outflow channel.

[0005] In one or more embodiments, each of the inflow channels communicates with the sidewall of the first axial end of the first cylindrical chamber, the first axial end of the first cylindrical chamber being located on the axially opposite side of the second axial end wall of the first cylindrical chamber.

[0006] In one or more embodiments, the plurality of inflow channels are evenly distributed circumferentially within the first cylindrical cavity.

[0007] In one or more embodiments, among the plurality of annular baffles in the second cylindrical chamber, the first annular baffle is located on the innermost circumferential side and its axial projection onto the third axial end wall of the second cylindrical chamber is greater than and covers the outlet of the first outflow channel.

[0008] In one or more embodiments, among the plurality of annular partitions in the second cylindrical chamber, the first annular partition is located on the outermost circumferential side, the end of the rotary channel is located between the side wall of the second cylindrical chamber and the first annular partition on the outermost circumferential side, and the plurality of second outflow channels are located between the side wall of the second cylindrical chamber and the first annular partition on the outermost circumferential side and are evenly distributed circumferentially on the fourth axial end wall of the second cylindrical chamber.

[0009] In one or more embodiments, the liquid mixer further includes a third mixing chamber, the third mixing chamber including a third cylindrical chamber and a third outlet channel, the plurality of second outlet channels communicating with the fifth axial end wall of the third cylindrical chamber and being evenly distributed circumferentially, the third outlet channel communicating with the center of the sixth axial end wall of the third cylindrical chamber, the liquid flowing into the third cylindrical chamber from the second outlet channel being mixed in the third cylindrical chamber and then flowing out through the third outlet channel.

[0010] In one or more embodiments, the central axes of the first cylindrical chamber, the second cylindrical chamber, and the third cylindrical chamber coincide.

[0011] In one or more embodiments, the fourth axial end wall of the second cylindrical chamber and the fifth axial end wall of the third cylindrical chamber are integrally formed as a second partition wall, the second partition wall separating the second cylindrical chamber and the third cylindrical chamber, and each second outflow channel is a second outflow hole that penetrates the second partition wall axially.

[0012] In one or more embodiments, the second axial end wall of the first cylindrical chamber and the third axial end wall of the second cylindrical chamber are integrally formed by a first partition wall, the first partition wall separating the first cylindrical chamber and the second cylindrical chamber, and the first outflow channel is a first outflow hole that penetrates the first partition wall axially.

[0013] In one or more embodiments, the second axial end wall of the first cylindrical chamber serves as the bottom wall of the first cylindrical chamber, the fourth axial end wall of the second cylindrical chamber serves as the bottom wall of the second cylindrical chamber, and the sixth axial end wall of the third cylindrical chamber serves as the bottom wall of the third cylindrical chamber.

[0014] The embodiments of the present invention have at least one of the following beneficial effects:

[0015] The jet of liquids to be mixed flows tangentially into the first cylindrical chamber through the inlet channel. Guided by the arc-shaped inner wall of the first cylindrical chamber, it rotates circumferentially, forming a swirling flow. This causes the various liquids to collide, shear, break up, recombine, and convolve within the first cylindrical chamber, increasing the contact area and promoting mixing, thus enhancing the mixing effect. Liquids flowing in from the first outlet channel flow from the center of the second cylindrical chamber outwards. Radially, the liquid alternately flows around the first and second annular baffles along the rotating channel in an S-shaped pattern, generating turbulence and vortices, further promoting mixing and enhancing the mixing effect. Attached Figure Description

[0016] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a perspective view of a liquid mixer according to an embodiment of the present invention.

[0018] Figure 2 This is a three-dimensional view of the liquid mixer after cross-section according to an embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional view of a liquid mixer according to an embodiment of the present invention.

[0020] Figure 4 for Figure 3 Sectional view at point BB.

[0021] Figure label:

[0022] 1-Liquid mixer.

[0023] 2-First mixing chamber.

[0024] 21-First cylindrical chamber.

[0025] 22-First outflow channel.

[0026] 23 - Inflow channel.

[0027] 24 - Second shaft end wall.

[0028] 25 - First shaft end wall.

[0029] 26 - First outlet hole.

[0030] 3-Second mixing chamber.

[0031] 31 - Second cylindrical chamber.

[0032] 32- Circular partition.

[0033] 321 - First annular partition.

[0034] 322 - Second annular partition.

[0035] 33 - Second outflow channel.

[0036] 34 - Third shaft end wall.

[0037] 35 - Fourth shaft end wall.

[0038] 36 - Rotary channel.

[0039] 37 - Second outlet hole.

[0040] 4-Third mixing chamber.

[0041] 41 - Third cylindrical chamber.

[0042] 42 - Third outflow channel.

[0043] 43 - Fifth shaft end wall.

[0044] 44 - Sixth shaft end wall.

[0045] 5-Second partition wall.

[0046] 6-First partition wall. Detailed Implementation

[0047] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0048] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0049] The terms “first”, “second”, etc., are used interchangeably to distinguish one feature from another and are not intended to indicate that each feature must be located in the position shown in the figure in each embodiment.

[0050] like Figures 1 to 4 As shown, the liquid mixer 1 is provided with a first mixing chamber 2 and a second mixing chamber 3.

[0051] like Figures 1 to 4 As shown, the first mixing chamber 2 is provided with a first cylindrical chamber 21, a first outflow channel 22 and multiple inflow channels 23. The first mixing chamber 2 is used for the first mixing of the liquid to be mixed.

[0052] It can be understood that the inflow channel 23 is both the inflow channel for the liquid to be mixed in the first mixing chamber 2 and the inflow channel for the liquid to be mixed in the liquid mixer 1. Figures 1 to 4 In the illustrated embodiment, the first mixing chamber 2 may be provided with two inflow channels 23, with each type of liquid to be mixed flowing into the first cylindrical chamber 21 from one inflow channel 23, and the liquid mixer 1 is used for mixing the two types of fuel. In another embodiment, the first mixing chamber 2 may be provided with other numbers of multiple inflow channels 23, with each type of liquid to be mixed flowing into the first cylindrical chamber 21 from one inflow channel 23, and the liquid mixer 1 is used for mixing the corresponding number and types of fuel flowing into the inflow channels 23.

[0053] like Figure 4 As shown, each inflow channel 23 connects to the first cylindrical chamber 21 and extends tangentially from the first cylindrical chamber 21 along the axial plane. The extension direction of the inflow channel 23 lies in a plane perpendicular to the central axis of the first cylindrical chamber 21 and is tangential to the inner wall of the first cylindrical chamber 21. The liquid flow direction of the inflow channel 23 is... Figures 1 to 4 The arrow is shown in the middle.

[0054] like Figures 2 to 4 As shown, the first outflow channel 22 connects to the center of the second axial end wall 24 of the first cylindrical chamber 21. The second axial end wall 24 of the first cylindrical chamber 21 is perpendicular to the central axis of the first cylindrical chamber 21 and located at one axial end of the first cylindrical chamber 21. The liquid flow direction of the first outflow channel 22 is... Figure 2 , Figure 3 The arrow is shown in the middle.

[0055] like Figures 2 to 4 As shown, the liquid flowing in from the inflow channel 23 mixes and rotates circumferentially within the first cylindrical chamber 21 before flowing out through the first outflow channel 22. The jet of liquid to be mixed flows tangentially into the first cylindrical chamber 21 from the inflow channel 23, and rotates circumferentially under the guidance of the arc-shaped inner wall of the first cylindrical chamber 21, forming a swirling flow. This causes the various liquids to collide, shear, break up, recombine, and convolve within the first cylindrical chamber 21, increasing the contact area of ​​the liquids, promoting mixing, and improving the mixing effect. In the aforementioned embodiment with two inflow channels 23, the greater the difference in the mixing ratio of the two fuels, the better the mixing. After the first mixing is completed in the first cylindrical chamber 21, the liquid flows out from the first outflow channel 22 located at the center, adapting to the swirling flow field characteristics within the first cylindrical chamber 21, allowing the liquid to be smoothly discharged along the rotation axis, efficiently converging, improving outflow efficiency, avoiding flow field turbulence, and enhancing the mixing effect.

[0056] like Figure 2 and Figure 3As shown, the second mixing chamber 3 is provided with a second cylindrical chamber 31, multiple annular baffles 32 and multiple second outflow channels 33. The second mixing chamber 3 is used for a second mixing.

[0057] like Figure 2 and Figure 3 As shown, the first outflow channel 22 connects to the center of the third axial end wall 34 of the second cylindrical chamber 31. The third axial end wall 34 of the second cylindrical chamber 31 is perpendicular to the central axis of the second cylindrical chamber 31 and is located at one axial end of the second cylindrical chamber 31. Of course, the second cylindrical chamber 31 also has a fourth axial end wall 35. The fourth axial end wall 35 of the second cylindrical chamber 31 is perpendicular to the central axis of the second cylindrical chamber 31 and is located at the other axial end of the second cylindrical chamber 31. The third axial end wall 34 and the fourth axial end wall 35 of the second cylindrical chamber 31 are respectively located at both axial ends of the second cylindrical chamber 31.

[0058] like Figure 2 and Figure 3 As shown, the central axis of each annular partition 32 coincides with the central axis of the second cylindrical chamber 31, and the annular partition 32 and the second cylindrical chamber 31 are concentrically arranged. The plurality of annular partitions 32 include a first annular partition 321 and a second annular partition 322. The first annular partition 321 extends axially from the fourth axial end wall 35 of the second cylindrical chamber 31 and is axially spaced from the third axial end wall 34 of the second cylindrical chamber 31.

[0059] The second annular baffle 322 extends axially from the third axial end wall 34 of the second cylindrical chamber 31 and is axially spaced from the fourth axial end wall 35 of the second cylindrical chamber 31. The first annular baffle 321 and the second annular baffle 322 are alternately arranged from the inner circumference to the outer circumference to separate the rotary channel 36 within the second cylindrical chamber 31. The liquid flow direction of the rotary channel 36 is... Figure 2 , Figure 3 The innermost annular partition 32 can be either the first annular partition 321 or the second annular partition 322, and the outermost annular partition 32 can also be either the first annular partition 321 or the second annular partition 322. As long as the first annular partition 321 and the second annular partition 322 are alternately arranged from the innermost to the outermost side, the rotating channel 36 can be separated within the second cylindrical chamber 31.

[0060] like Figure 2 and Figure 3As shown, multiple second outflow channels 33 connect to the outer circumferential end of the rotary channel 36 and are evenly distributed circumferentially. The end of the rotary channel 36 is located between the inner wall of the second cylindrical chamber 31 and the outermost annular partition 32. The end of the rotary channel 36 is annular, and the multiple second outflow channels 33 are evenly distributed circumferentially at the end of the rotary channel 36. The liquid flow direction of the second outflow channels 33 is... Figure 2 , Figure 3 The arrow is shown in the middle.

[0061] like Figure 2 and Figure 3 As shown, the liquid flowing into the second cylindrical chamber 31 from the first outflow channel 22 flows through the rotary channel 36, generating vortex mixing before flowing out through the second outflow channel 33. The liquid flowing into the second cylindrical chamber 31 from the center outwards flows radially around the first annular baffle 321 and the second annular baffle 322, creating turbulence and vortices, promoting mixing and improving the mixing effect. After the second mixing is completed in the second cylindrical chamber 31, the liquid flows out through multiple second outflow channels 33 evenly distributed on the inner circumference of the end of the rotary channel 36, ensuring the uniformity of the outflowing liquid.

[0062] like Figure 2 and Figure 3 As shown, each inflow channel 23 can connect to the side wall of the first axial end of the first cylindrical chamber 21. The first axial end of the first cylindrical chamber 21 is located on the axially opposite side of the second axial end wall 24 of the first cylindrical chamber 21. The inflow channel 23 connects to the first axial end of the first cylindrical chamber 21, increasing the axial distance between the inflow channel 23 and the first outflow channel 22, increasing the length of the liquid flow mixing path in the first cylindrical chamber 21, and improving the mixing effect. As mentioned above, the first cylindrical chamber 21 has a second axial end wall 24. Of course, the first cylindrical chamber 21 also has a first axial end wall 25. The first axial end wall 25 of the first cylindrical chamber 21 is perpendicular to the central axis of the first cylindrical chamber 21. The first axial end wall 25 and the second axial end wall 24 of the first cylindrical chamber 21 are located at the two axial ends of the first cylindrical chamber 21, respectively. The inflow channel 23 can connect to the side wall region of the first axial end wall 25 adjacent to the first cylindrical chamber 21, and the axial height of the side wall region can account for 20% of the total axial height of the first cylindrical chamber 21.

[0063] like Figure 1 and Figure 4 As shown, multiple inflow channels 23 can be evenly distributed circumferentially in the first cylindrical chamber 21, thereby constructing a symmetrical and stable swirling flow field in the first cylindrical chamber 21, avoiding flow field turbulence and deviation, and enabling multiple liquids to mix quickly and uniformly.

[0064] like Figure 2 and Figure 3 As shown, among the multiple annular baffles 32 in the second cylindrical chamber 31, the first annular baffle 321 can be disposed on the innermost circumference, and the axial projection of the first annular baffle 321 onto the third axial end wall 34 of the second cylindrical chamber 31 is greater than and covers the outlet of the first outflow channel 22. The first annular baffle 321 on the innermost circumference surrounds the outlet of the first outflow channel 22. Liquid flowing out of the first outflow channel 22 flows into the chamber surrounded by the first annular baffle 321, and is blocked by the fourth axial end wall 35 of the second cylindrical chamber 31, flowing back out of the chamber surrounded by the first annular baffle 321 and flowing to the outer circumference. Compared with the second annular baffle 322 on the innermost circumference of the multiple annular baffles 32 in the second cylindrical chamber 31, the second annular baffle 322 promotes the generation of turbulence and vortices, promotes mixing, and improves the mixing effect.

[0065] like Figure 2 and Figure 3 In the second cylindrical chamber 31, among the plurality of annular baffles 32, the first annular baffle 321 can be located on the outermost circumference. The end of the rotary channel 36 is located between the side wall of the second cylindrical chamber 31 and the first annular baffle 321 on the outermost circumference. This allows the liquid in the end of the rotary channel 36 to flow from the third axial end wall 34 of the second cylindrical chamber 31 to the fourth axial end wall 35 of the second cylindrical chamber 31. All of the plurality of second outflow channels 33 are located between the side wall of the second cylindrical chamber 31 and the outermost annular baffle 321. Between the first annular baffles 321 on the outer periphery, and all of the multiple second outflow channels 33 are evenly distributed circumferentially on the fourth shaft end wall 35 of the second cylindrical chamber 31, the liquid in the end of the rotary channel 36 flows out from the second outflow channel 33 on the fourth shaft end wall 35. The direction of the liquid flowing out of the second cylindrical chamber 31 from the second outflow channel 33 is in line with the direction of the liquid flowing into the second cylindrical chamber 31 from the first outflow channel 22, so as to avoid the loss of flow energy caused by the change of the mainstream direction and improve the outflow efficiency.

[0066] like Figure 2 and Figure 3 As shown, the liquid mixer 1 may also be provided with a third mixing chamber 4, which is provided with a third cylindrical chamber 41 and a third outlet channel 42. The third mixing chamber 4 is used for a third mixing.

[0067] like Figure 2 and Figure 3As shown, all of the plurality of second outflow channels 33 are connected to the fifth axial end wall 43 of the third cylindrical chamber 41, and all of the plurality of second outflow channels 33 are evenly distributed circumferentially on the fifth axial end wall 43 of the third cylindrical chamber 41. The fifth axial end wall 43 of the third cylindrical chamber 41 is perpendicular to the centerline of the third cylindrical chamber 41 and is located at one axial end of the third cylindrical chamber 41. Of course, the third cylindrical chamber 41 also has a sixth axial end wall 44, which is perpendicular to the central axis of the third cylindrical chamber 41 and is located at the other axial end of the third cylindrical chamber 41. The fifth axial end wall 43 and the sixth axial end wall 44 of the third cylindrical chamber 41 are respectively located at both axial ends of the third cylindrical chamber 41.

[0068] like Figure 2 and Figure 3 As shown, the third outflow channel 42 connects to the center of the sixth axial end wall 44 of the third cylindrical chamber 41, and the liquid flow direction of the third outflow channel 42 is... Figure 2 , Figure 3 The arrow is shown in the middle.

[0069] like Figure 2 and Figure 3 As shown, the liquid flowing into the third cylindrical chamber 41 from the second outflow channel 33 mixes within the third cylindrical chamber 41 and then flows out through the third outflow channel 42. Within the third cylindrical chamber 41, radially, the liquid flowing in from the second outflow channel 33 flows from the outer periphery of the third cylindrical chamber 41 towards the center of the third outflow channel 42. This radial converging flow promotes collisions of the liquid within the third cylindrical chamber 41, enhancing mixing and improving the mixing effect. Inside the third cylindrical chamber 41, axially upward, the liquid flowing in from the second outflow channel 33 flows from the fifth axial end wall 43 of the third cylindrical chamber 41 to the third outflow channel 42 located at the sixth axial end wall 44 of the third cylindrical chamber 41. The direction of the liquid flowing out of the third cylindrical chamber 41 from the third outflow channel 42 is the same as the direction of the liquid flowing into the third cylindrical chamber 41 from the second outflow channel 33. This avoids the loss of flow energy and flow field turbulence caused by the change of the mainstream direction, improves the outflow efficiency, stabilizes the fluid pressure, eliminates flow pulsation, and finally discharges the mixed liquid.

[0070] like Figure 2 and Figure 3 As shown, the central axes of the first cylindrical chamber 21, the second cylindrical chamber 31, and the third cylindrical chamber 41 can coincide. This allows the liquid flowing from the first cylindrical chamber 21 into the second cylindrical chamber 31 through the first outflow channel 22 to flow along the central axis, and the liquid flowing from the second cylindrical chamber 31 into the third cylindrical chamber 41 through the second outflow channel 33 to flow in a direction parallel to the central axis. This creates a symmetrical and stable flow field, avoids flow field deviation, reduces flow field turbulence, reduces pressure loss, and improves the mixing effect.

[0071] like Figure 2 and Figure 3 As shown, the fourth axial end wall 35 of the second cylindrical chamber 31 and the fifth axial end wall 43 of the third cylindrical chamber 41 can be integrated into a second partition wall 5. The second partition wall 5 separates the second cylindrical chamber 31 and the third cylindrical chamber 41, resulting in a compact structure. Each second outflow channel 33 is a second outflow hole 37 that penetrates the second partition wall 5 along the axial direction, resulting in a short flow path and low pressure loss.

[0072] like Figure 2 and Figure 3 As shown, the second axial end wall 24 of the first cylindrical chamber 21 and the third axial end wall 34 of the second cylindrical chamber 31 can be integrated into a first partition wall 6. The first partition wall 6 separates the first cylindrical chamber 21 and the second cylindrical chamber 31, resulting in a compact structure. The first outflow channel 22 is a first outflow hole 26 that penetrates the first partition wall 6 along the axial direction, resulting in a short flow path and low pressure loss.

[0073] like Figure 2 and Figure 3 As shown, the second axial end wall 24 of the first cylindrical chamber 21 can serve as the bottom wall of the first cylindrical chamber 21. The first cylindrical chamber 21 is vertically arranged, and the central axis of the first cylindrical chamber 21 is parallel to the plumb bob. The second axial end wall 24 of the first cylindrical chamber 21 is the bottom wall of the first cylindrical chamber 21, and the first axial end wall 25 of the first cylindrical chamber 21 is the top wall of the first cylindrical chamber 21. The liquid in the first cylindrical chamber 21 flows faster under the action of gravity.

[0074] like Figure 2 and Figure 3 As shown, the fourth axial end wall 35 of the second cylindrical chamber 31 can serve as the bottom wall of the second cylindrical chamber 31. The second cylindrical chamber 31 is vertically arranged, and the central axis of the second cylindrical chamber 31 is parallel to the plumb bob. The fourth axial end wall 35 of the second cylindrical chamber 31 is the bottom wall of the second cylindrical chamber 31, and the third axial end wall 34 of the second cylindrical chamber 31 is the top wall of the second cylindrical chamber 31. The liquid in the second cylindrical chamber 31 flows faster under the action of gravity.

[0075] like Figure 2 and Figure 3 As shown, the sixth axial end wall 44 of the third cylindrical chamber 41 can serve as the bottom wall of the third cylindrical chamber 41. The third cylindrical chamber 41 is vertically arranged, and the central axis of the third cylindrical chamber 41 is parallel to the plumb bob. The sixth axial end wall 44 of the third cylindrical chamber 41 is the bottom wall of the third cylindrical chamber 41, and the fifth axial end wall 43 of the third cylindrical chamber 41 is the top wall of the third cylindrical chamber 41. The liquid in the third cylindrical chamber 41 flows faster under the action of gravity.

[0076] To reduce the flow dead zone of the liquid mixer 1, the structures inside the first cylindrical chamber 21, the second cylindrical chamber 31, and the third cylindrical chamber 41 can be rounded.

[0077] The aforementioned liquid mixer 1 features high mixing efficiency, low pressure loss, and short mixing time. For the mixing of two fuels, mixing efficiency is an indicator of the uniformity of the mixing. Mixing efficiency is evaluated by calculating the variance of the fluid concentration in the cross-section. The mixing efficiency ranges from 0 to 1, where a mixing efficiency of 1 indicates complete mixing of the two fuels, and a mixing efficiency of 0 indicates no mixing of the two fuels. Numerical simulation was performed on the liquid mixer 1 with two inflow channels 23. The results showed that: (1) the mixing efficiency of the liquid mixer 1 is high, and the mixing efficiency is greater than 0.99; (2) the pressure loss of the liquid mixer 1 is low. The pressure loss of the liquid mixer 1 increases with the increase of the mass flow rate of the two liquid fuels. When the flow rate is 0.5 kg / s (1800 kg / h), the pressure loss is no greater than 58 kPa; (3) the fuel residence time of the liquid mixer 1 is short. The fuel residence time decreases with the increase of the mass flow rate of the two liquid fuels. When the flow rate is 0.1 kg / s (360 kg / h), the fuel residence time is about 140 s. When the flow rate is 0.5 kg / s (1800 kg / h), the fuel residence time is about 40 s.

[0078] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention.

Claims

1. A liquid mixer (1), characterized in that include: The first mixing chamber (2) includes a first cylindrical chamber (21), a first outflow channel (22), and a plurality of inflow channels (23). Each of the inflow channels (23) is connected to the first cylindrical chamber (21) and extends tangentially from the first cylindrical chamber (21) along the vertical plane. The first outflow channel (22) is connected to the center of the second axial end wall (24) of the first cylindrical chamber (21). The liquid flowing in from the inflow channel (23) is circumferentially rotated and mixed in the first cylindrical chamber (21) and then flows out through the first outflow channel (22). as well as The second mixing chamber (3) includes a second cylindrical chamber (31), a plurality of annular baffles (32), and a plurality of second outflow channels (33). The first outflow channel (22) communicates with the center of the third axial end wall (34) of the second cylindrical chamber (31). The central axis of each annular baffle (32) coincides with the central axis of the second cylindrical chamber (31). The plurality of annular baffles (32) includes a first annular baffle (321) and a second annular baffle (322). The first annular baffle (321) extends axially from the fourth axial end wall (35) of the second cylindrical chamber (31) and is axially spaced from the third axial end wall (34) of the second cylindrical chamber (31). An annular baffle (322) extends axially from the third axial end wall (34) of the second cylindrical chamber (31) and is axially spaced from the fourth axial end wall (35) of the second cylindrical chamber (31). The first annular baffle (321) and the second annular baffle (322) are alternately arranged from the inner circumferential side to the outer circumferential side to separate the rotary channel (36) in the second cylindrical chamber (31). The plurality of second outflow channels (33) connect the ends of the rotary channel (36) on the outer circumferential side and are evenly distributed circumferentially. The liquid flowing into the second cylindrical chamber (31) from the first outflow channel (22) flows in the rotary channel (36) to generate vortex mixing and then flows out through the second outflow channel (33).

2. The liquid mixer (1) according to claim 1, characterized in that: Each of the inflow channels (23) connects to the sidewall of the first axial end of the first cylindrical chamber (21), the first axial end of the first cylindrical chamber (21) being located on the axially opposite side of the second axial end wall (24) of the first cylindrical chamber (21).

3. The liquid mixer (1) according to claim 1, characterized in that: The multiple inflow channels (23) are evenly distributed circumferentially in the first cylindrical cavity (21).

4. The liquid mixer (1) according to claim 1, characterized in that: In the plurality of annular baffles (32) of the second cylindrical chamber (31), the first annular baffle (321) is located on the innermost circumference and its axial projection toward the third axial end wall (34) of the second cylindrical chamber (31) is greater than and covers the outlet of the first outflow channel (22).

5. The liquid mixer (1) according to claim 1, characterized in that: In the plurality of annular partitions (32) of the second cylindrical chamber (31), the first annular partition (321) is located on the outermost circumferential side, the end of the rotary channel (36) is located between the side wall of the second cylindrical chamber (31) and the first annular partition (321) on the outermost circumferential side, and the plurality of second outflow channels (33) are located between the side wall of the second cylindrical chamber (31) and the first annular partition (321) on the outermost circumferential side and are evenly distributed circumferentially on the fourth axial end wall (35) of the second cylindrical chamber (31).

6. The liquid mixer (1) according to claim 1, characterized in that: The liquid mixer (1) further includes a third mixing chamber (4), which includes a third cylindrical chamber (41) and a third outlet channel (42). The plurality of second outlet channels (33) are connected to the fifth axial end wall (43) of the third cylindrical chamber (41) and are evenly distributed circumferentially. The third outlet channel (42) is connected to the center of the sixth axial end wall (44) of the third cylindrical chamber (41). The liquid flowing into the third cylindrical chamber (41) from the second outlet channel (33) is mixed in the third cylindrical chamber (41) and then flows out through the third outlet channel (42).

7. The liquid mixer (1) according to claim 6, characterized in that: The central axes of the first cylindrical chamber (21), the second cylindrical chamber (31) and the third cylindrical chamber (41) coincide.

8. The liquid mixer (1) according to claim 6, characterized in that: The fourth axial end wall (35) of the second cylindrical chamber (31) and the fifth axial end wall (43) of the third cylindrical chamber (41) are integrally formed as a second partition wall (5). The second partition wall (5) separates the second cylindrical chamber (31) and the third cylindrical chamber (41). Each second outflow channel (33) is a second outflow hole (37) that penetrates the second partition wall (5) axially.

9. The liquid mixer (1) according to claim 1, characterized in that: The second axial end wall (24) of the first cylindrical chamber (21) and the third axial end wall (34) of the second cylindrical chamber (31) are integrally formed by a first partition wall (6). The first partition wall (6) separates the first cylindrical chamber (21) and the second cylindrical chamber (31). The first outflow channel (22) is a first outflow hole (26) that penetrates the first partition wall (6) axially.

10. The liquid mixer (1) according to claim 6, characterized in that: The second axial end wall (24) of the first cylindrical chamber (21) serves as the bottom wall of the first cylindrical chamber (21), the fourth axial end wall (35) of the second cylindrical chamber (31) serves as the bottom wall of the second cylindrical chamber (31), and the sixth axial end wall (44) of the third cylindrical chamber (41) serves as the bottom wall of the third cylindrical chamber (41).

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