Cascade high-pressure-rise ejector
Through the design of a cascade high-pressure-rise ejector, high-pressure fluid is used to drive low-speed fluid in a circular manner in the mixing chamber to achieve multi-stage ejection, which solves the problem of large kinetic energy loss in single-stage ejectors and improves ejection efficiency.
Patent Information
- Application Number
- CN202422971844.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Conventional single-stage ejectors suffer from high kinetic energy loss when increasing fluid pressure. Using two-stage or multi-stage ejectors results in a "one-up, one-down" process, leading to low efficiency.
A cascade high-pressure-rise ejector is designed, in which high-pressure fluid drives low-speed fluid in a circular manner in a mixing chamber to achieve multi-stage ejection, avoiding kinetic energy loss. A combined structure of a high-pressure cavity, a mixing chamber, and a diffusion chamber is adopted to achieve multi-stage mixing and pressure boosting of the fluid.
It realizes multi-stage injection of fluid, reduces kinetic energy loss, improves injection capability, and achieves the effect of large pressure rise.
Smart Images
Figure CN223424347U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ejectors, and in particular to a cascade high-pressure-rise ejector. Background Art
[0002] In industrial production, it is often necessary to significantly increase the fluid pressure. The single-stage injection scheme often fails to achieve the desired effect. Therefore, people have come up with the idea of using two-stage or multi-stage injection and step-by-step pressure boosting methods.
[0003] Conventional single-stage ejector mainly consists of three parts (such as Figure 1 、 2 shown)
[0004] 1. Nozzle: used to convert high-pressure fluid pressure energy into velocity energy;
[0005] 2. Mixing chamber: used for exchanging and unifying high and low pressure fluids at the same speed;
[0006] 3. Diffuser: used in the outlet section to convert velocity energy into pressure energy;
[0007] A two-stage series method is adopted: the fluid at the outlet section is first pressurized, and then enters the lower-stage nozzle to reduce pressure and accelerate. This "one rise and one fall" process consumes a lot of kinetic energy.
[0008] Based on the above reasons, a two-stage or multi-stage integrated cascade high pressure rise ejector is conceived to avoid the losses caused by the above-mentioned "one rise and one fall" process. Utility Model Content
[0009] In order to solve the above-mentioned problems, reduce the loss of kinetic energy and improve the ejection capability, the present application provides a cascade high-pressure-rise ejector.
[0010] The present application provides a cascade high pressure rise ejector adopting the following technical solution.
[0011] A cascade high pressure rise ejector, comprising:
[0012] A high-pressure chamber is provided with a high-pressure fluid inlet, a first mixing chamber is provided in the high-pressure chamber, a low-pressure fluid nozzle is provided at the head end of the high-pressure chamber, the tail end of the low-pressure fluid nozzle is located in the head end of the first mixing chamber, a second mixing chamber is provided at the tail end of the high-pressure chamber, the tail end of the first mixing chamber is located in the head end of the second mixing chamber, and a diffusion chamber is provided at the tail end of the second mixing chamber.
[0013] By adopting the above technical solution, a part of the high-pressure fluid can enter the first mixing chamber from the gap between the low-pressure fluid nozzle and the head end of the first mixing chamber. At the same time, the low-pressure fluid enters the high-pressure chamber from the low-pressure fluid nozzle and mixes with a part of the high-pressure fluid in the first mixing chamber, and the high-pressure fluid is annular, and the high-pressure fluid on the periphery drives the low-speed flow in the center to realize the first-level injection; another part of the high-pressure fluid enters the mixing chamber from the tail end of the high-pressure chamber and mixes again with the mixed fluid discharged from the first mixing chamber in the second mixing chamber, and another part of the high-pressure fluid is also annular, and the high-pressure fluid on the periphery drives the low-speed flow in the center to realize the second-level injection; finally, the mixed fluid after the second mixing enters the diffusion chamber, and flows out after being decelerated and pressurized in the diffusion chamber, realizing multi-stage injection and achieving the effect of large pressure increase injection.
[0014] Optionally, the high-pressure chamber includes a high-pressure chamber tube, the second mixing chamber includes a second mixing chamber tube, the head end of the second mixing chamber tube is provided with a second expanding tube, and the tail end of the first mixing chamber is located in the second expanding tube.
[0015] By adopting the above technical solution, the cross-section of the high-pressure cavity tube is circular, which helps to form a uniform annular high-pressure fluid. Through the setting of the second expansion tube, the mixed fluid discharged from the tail end of the first mixing chamber can better enter the second mixing chamber, and the high-pressure fluid in the high-pressure cavity can enter the second mixing chamber from the gap between the tail end of the first mixing chamber and the second expansion tube. The high-pressure flow is annular, which can drive the relatively low-speed mixed fluid discharged from the tail end of the first mixing chamber into the second mixing chamber for re-mixing.
[0016] Optionally, the low-pressure fluid nozzle includes a low-pressure fluid inlet pipe, the tail end of the low-pressure fluid inlet pipe is provided with a tapered tube with a closed end, and the tail end of the tapered tube is provided with a cylindrical tube.
[0017] By adopting the above technical solution and through the structural design of the nozzle, the accelerated pressure reduction of the low-pressure fluid can be achieved.
[0018] Optionally, the first mixing chamber includes a first mixing chamber tube, a first expanding tube is provided at the head end of the first mixing chamber tube, and the tail end of the low-pressure fluid nozzle is located in the first expanding tube.
[0019] By adopting the above technical solution, the tail end of the low-pressure fluid nozzle is located in the first expanded tube, so that when a portion of the high-pressure fluid passes through the first expanded tube and enters the first mixing chamber tube, the high-pressure fluid is in a ring shape, which can drive the low-pressure fluid in the center part to flow out of the nozzle.
[0020] Optionally, the low-pressure fluid nozzle, the first mixing chamber tube, the high-pressure cavity tube and the second mixing chamber tube are coaxially arranged.
[0021] Optionally, the diameter of the first mixing chamber pipe is smaller than the diameter of the second mixing chamber pipe.
[0022] By adopting the above technical solution, the diameter of the first mixing chamber pipe is smaller than the diameter of the second mixing chamber pipe, so that the mixed fluid discharged from the tail end of the first mixing chamber pipe can better enter the second mixing chamber pipe.
[0023] Optionally, the diffuser chamber comprises a diffuser pipe, which is arranged in an expanding manner from the head end to the tail end.
[0024] By adopting the above technical solution, the mixed fluid discharged from the second mixing chamber pipe can be slowed down and pressurized through the diffuser pipe.
[0025] Optionally, the high-pressure fluid inlet is located on the side of the head end of the high-pressure cavity.
[0026] By adopting the above technical solution, the high-pressure fluid enters the high-pressure cavity from the high-pressure fluid inlet, so that the high-pressure fluid can be uniformly filled in the high-pressure cavity before being discharged, thereby maintaining the uniformity of the discharged high-pressure fluid.
[0027] Optionally, a high-pressure fluid inlet pipe is arranged at the high-pressure fluid inlet.
[0028] By adopting the above technical solution, the arrangement of the high-pressure fluid inlet pipe facilitates the access of the high-pressure fluid and improves the installation convenience.
[0029] In summary, the present application at least has the following advantages:
[0030] 1. Part of the high-pressure fluid can enter the first mixing chamber from the gap between the low-pressure fluid nozzle and the head end of the first mixing chamber, at the same time, the low-pressure fluid enters the high-pressure cavity from the low-pressure fluid nozzle, mixes with part of the high-pressure fluid in the first mixing chamber, and the high-pressure fluid is annular, the peripheral high-pressure fluid drives the central low-speed flow, realizing primary injection; another part of the high-pressure fluid enters the mixing chamber from the tail end of the high-pressure cavity, and mixes with the mixed fluid discharged from the first mixing chamber in the second mixing chamber, and another part of the high-pressure fluid is also annular, the peripheral high-pressure fluid drives the central low-speed flow, realizing secondary injection; finally, the mixed fluid after secondary mixing enters the diffuser chamber, and flows out after being slowed down and pressurized in the diffuser chamber, realizing multi-stage injection and achieving the effect of large pressure rise injection.
[0031] 2. The second mixing chamber of the present application comprises a second mixing chamber pipe, the head end of the second mixing chamber pipe is provided with a second expanding pipe, the tail end of the first mixing chamber is located in the second expanding pipe, and the diameter of the first mixing chamber pipe is smaller than the diameter of the second mixing chamber pipe, so that the fluid of the first mixing chamber can directly enter the second mixing chamber, avoiding the meaningless kinetic energy loss caused by the deceleration, pressurization, and re-deceleration and acceleration in the case of two separate ejectors, and improving the injection capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0033] Figure 1 This is a schematic diagram of the conventional single-stage ejector structure.
[0034] Figure 2 This is a schematic diagram of the cross-sectional structure of a conventional single-stage ejector.
[0035] Figure 3 It is a structural diagram of a cascade high-pressure-rise ejector.
[0036] Figure 4 It is a schematic diagram of the cross-sectional structure of a cascade high-pressure-rise ejector.
[0037] Figure 5 This is a structural diagram of a cascade high-pressure-rise ejector from another perspective.
[0038] Figure 6 It is a schematic diagram of the cross-sectional structure of a cascade high-pressure-rise ejector from another perspective.
[0039] Explanation of the accompanying drawings: 1. High-pressure chamber; 2. High-pressure chamber tube; 3. High-pressure fluid inlet tube; 4. Low-pressure fluid nozzle; 5. Low-pressure fluid inlet tube; 6. Conical tube; 7. Cylindrical tube; 8. First mixing chamber; 9. First mixing chamber tube; 10. First expansion tube; 11. Second mixing chamber; 12. Second mixing chamber tube; 13. Second expansion tube; 14. Diffuser tube. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0041] The following is combined with Figures 3 to 6 This application is described in further detail.
[0042] The embodiments of the present application disclose a cascade high pressure rise ejector.
[0043] Reference Figures 3 to 6A cascade high pressure ejector comprises a high pressure chamber 1, a first mixing chamber 8 and a second mixing chamber 11.
[0044] High-pressure chamber 1 includes a high-pressure chamber tube 2. A high-pressure fluid inlet is located on the side of the head end of the high-pressure chamber 1. A high-pressure fluid inlet tube 3 is provided at the high-pressure fluid inlet. This facilitates access to high-pressure fluid and improves installation convenience. High-pressure fluid enters the high-pressure chamber 1 from the high-pressure fluid inlet, allowing the high-pressure fluid to be evenly distributed within the chamber before being discharged, maintaining uniformity in the discharged high-pressure fluid.
[0045] A low-pressure fluid nozzle 4 is provided at the head end of the high-pressure chamber 1. The low-pressure fluid nozzle 4 includes a low-pressure fluid inlet pipe 5. The low-pressure fluid inlet pipe 5 is coaxially arranged with the high-pressure chamber tube 2. The tail end of the low-pressure fluid inlet pipe 5 is provided with a tapered tube 6 with a closed end, and the tail end of the tapered tube 6 is provided with a cylindrical tube 7. Through the structural design of the low-pressure fluid nozzle 4, the accelerated pressure reduction of the low-pressure fluid can be achieved.
[0046] The first mixing chamber 8 is disposed within the high-pressure chamber 1 and includes a first mixing chamber tube 9. The chamber of the first mixing chamber 8 is formed by the lumen of the first mixing chamber tube 9. A first expanding tube 10 is disposed at the head end of the first mixing chamber tube 9. The first mixing chamber tube 9 is coaxially disposed with the high-pressure chamber tube 2. The tail end of the low-pressure fluid nozzle 4 is located within the first expanding tube 10, that is, the tapered tube 6 and the cylindrical tube 7 are partially located within the first expanding tube 10. The tail end of the low-pressure fluid nozzle 4 is located within the first expanding tube 10, so that when a portion of the high-pressure fluid enters the first mixing chamber tube 9 through the first expanding tube 10, the high-pressure fluid forms a ring shape, which can drive the low-pressure fluid in the center to flow out of the nozzle.
[0047] The second mixing chamber 11 is arranged at the tail end of the high-pressure chamber 1. The second mixing chamber 11 includes a second mixing chamber tube 12. The chamber of the second mixing chamber 11 is formed by the tube cavity of the second mixing chamber tube 12. The head end of the second mixing chamber tube 12 is provided with a second expanding tube 13. The head end of the second expanding tube 13 is connected to the tail end of the high-pressure chamber tube 2, and the head end of the second expanding tube 13 has the same diameter as the tail end of the high-pressure chamber tube 2. The first mixing chamber tube 9 and the second mixing chamber tube 12 are coaxially arranged, and the tail end of the first mixing chamber tube 9 is located in the second expanding tube 13. The cross-section of the high-pressure cavity tube 2 is circular, which helps to form a uniform annular high-pressure fluid. Through the setting of the second expansion tube 13, the mixed fluid discharged from the tail end of the first mixing chamber 8 can better enter the second mixing chamber 11. The high-pressure fluid in the high-pressure cavity 1 can enter the second mixing chamber 11 from the gap between the tail end of the first mixing chamber 8 and the second expansion tube 13. The high-pressure flow is annular, which can drive the relatively low-speed mixed fluid discharged from the tail end of the first mixing chamber into the second mixing chamber 11 for re-mixing.
[0048] The diameter of the first mixing chamber tube 9 is smaller than that of the second mixing chamber tube 12 , so that the mixed fluid discharged from the tail end of the first mixing chamber tube 9 can better enter the second mixing chamber tube 12 .
[0049] A diffuser tube 14 is provided at the tail end of the second mixing chamber tube 12. The diffuser tube 14 is expanded from the head end to the tail end. The tube cavity of the diffuser tube 14 forms a diffuser chamber. Through the setting of the diffuser tube 14, the mixed fluid discharged from the second mixing chamber tube 12 can be decelerated and pressurized.
[0050] A portion of the high-pressure fluid can enter the first mixing chamber 8 from the gap between the low-pressure fluid nozzle 4 and the head end of the first mixing chamber 8 (the first expansion tube 10). At the same time, the low-pressure fluid enters the high-pressure chamber 1 from the low-pressure fluid nozzle 4 and mixes with a portion of the high-pressure fluid in the first mixing chamber 8. The high-pressure fluid is annular, and the high-pressure fluid on the periphery drives the low-speed flow in the center to achieve a first-level injection. Another portion of the high-pressure fluid enters the mixing chamber from the tail end of the high-pressure chamber 1 through the gap between the tail end of the first mixing chamber tube 9 and the second expansion tube 13, and mixes again with the mixed fluid discharged from the first mixing chamber 8 in the second mixing chamber 11. Another portion of the high-pressure fluid is also annular, and the high-pressure fluid on the periphery drives the low-speed flow in the center to achieve a second-level injection. Finally, the mixed fluid after the second mixing enters the diffusion chamber, and flows out after being decelerated and pressurized in the diffusion chamber, realizing multi-stage injection and achieving the effect of large pressure rise injection. The fluid in the first mixing chamber 8 can directly enter the second mixing chamber 11, avoiding the meaningless kinetic energy loss caused by deceleration, pressure increase, and then pressure reduction and acceleration when the two ejectors are separated, thereby improving the ejection capacity.
[0051] In the description of the present invention, it should be understood that the terms "head end", "tail end", "inside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.
[0052] The above are only preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.
Claims
1. A cascade high pressure rise ejector, characterized in that: include: A high-pressure chamber is provided with a high-pressure fluid inlet, a first mixing chamber is provided in the high-pressure chamber, a low-pressure fluid nozzle is provided at the head end of the high-pressure chamber, the tail end of the low-pressure fluid nozzle is located in the head end of the first mixing chamber, a second mixing chamber is provided at the tail end of the high-pressure chamber, the tail end of the first mixing chamber is located in the head end of the second mixing chamber, and a diffusion chamber is provided at the tail end of the second mixing chamber.
2. The cascade high pressure rise ejector according to claim 1, characterized in that: The high-pressure chamber includes a high-pressure chamber tube, the second mixing chamber includes a second mixing chamber tube, the head end of the second mixing chamber tube is provided with a second expanding tube, and the tail end of the first mixing chamber is located in the second expanding tube.
3. The cascade high pressure rise ejector according to claim 2, characterized in that: The low-pressure fluid nozzle comprises a low-pressure fluid inlet pipe, a tapered pipe with a closed end is provided at the tail end of the low-pressure fluid inlet pipe, and a cylindrical pipe is provided at the tail end of the tapered pipe.
4. The cascade high pressure rise ejector according to claim 3, characterized in that: The first mixing chamber comprises a first mixing chamber tube, a first expansion tube is provided at the head end of the first mixing chamber tube, and the tail end of the low-pressure fluid nozzle is located in the first expansion tube.
5. The cascade high pressure rise ejector according to claim 4, characterized in that: The low-pressure fluid nozzle, the first mixing chamber tube, the high-pressure cavity tube and the second mixing chamber tube are coaxially arranged.
6. The cascade high pressure rise ejector according to claim 4, characterized in that: The diameter of the first mixing chamber tube is smaller than the diameter of the second mixing chamber tube.
7. The cascade high pressure rise ejector according to claim 1, characterized in that: The pressure diffuser chamber includes a pressure diffuser tube, and the pressure diffuser tube is expanded from the head end to the tail end.
8. The cascade high pressure rise ejector according to claim 1, characterized in that: The high-pressure fluid inlet is located on the side of the head end of the high-pressure chamber.
9. The cascade high pressure rise ejector according to claim 8, characterized in that: A high-pressure fluid inlet pipe is provided at the high-pressure fluid inlet.