CN220551167U - Driven cone kettle turbine and green annular space high-pressure regulating turbine mechanism - Google Patents
Driven cone kettle turbine and green annular space high-pressure regulating turbine mechanism Download PDFInfo
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- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 22
- 238000005461 lubrication Methods 0.000 claims description 13
- -1 polytetrafluoroethylene ring Polymers 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 18
- 238000004364 calculation method Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a driven cone kettle turbine, which comprises a first cone-shaped volute and a pneumatic cone kettle turbine which are connected in a rotating way; a pneumatic cone pot turbine cavity is arranged in the first cone-shaped volute, and a pressure gas outlet is formed in the first cone-shaped volute; the pneumatic cone kettle turbine comprises a turbine power input shaft, and vortex air suction blades, a first turbine cone kettle body and a turbine centrifugal impeller are sequentially arranged on the turbine power input shaft; the first turbine cone kettle body is also internally provided with a conjoined impeller; the turbine centrifugal impeller is positioned in the turbine cavity of the pneumatic cone kettle; the vortex suction air blades are arranged around the turbine power input shaft, and an air suction opening is formed between every two adjacent vortex suction air blades She Waiyuan. The utility model also provides a green annular space high-pressure regulating turbine mechanism which comprises a pneumatic cone kettle turbine and a driven cone kettle turbine which are in linkage. The driven cone kettle turbine and the green ring space high pressure regulating turbine mechanism provided by the utility model can be used by being adapted to a green ring air conditioner, and meanwhile, the energy loss is reduced, and the energy conversion rate is greatly improved.
Description
Technical Field
The utility model relates to the field of high-pressure turbines, in particular to a driven cone kettle turbine and a green annular space high-pressure regulating turbine mechanism. The method is mainly used for application scenes such as a green air conditioner and the like which need to convert high-pressure air energy into other energy.
Background
The "green ring air conditioner" project disclosed in patent application nos. 2021113567369, 2021113580630, 2021113567373, etc. has been studied (may provide research and development reports) by simulation mathematics at the university of Qinghua.
After equipping the "green ring air conditioner" project with its high pressure turbine structure and conducting mathematical studies, it was found that:
1) If the existing high-pressure turbine mechanism is used, the structure of the green ring air conditioner needs to be changed greatly, and the original purpose is achieved;
2) For the 1 st point, in the original design scheme of green ring air conditioner, the existing general technology is adopted, and a special high-pressure turbine mechanism is designed aiming at the characteristic of green ring air conditioner. But still stays at the existing level in terms of energy conversion efficiency:
the efficiency of the conversion of gas energy into mechanical energy at the front end "high pressure turbine" of the high pressure turbine mechanism is typically around 75%, with major energy losses of about-15% for gas leakage, impingement between turbine and housing, about-5% for tail vortex, and about-5% for other losses. The efficiency of the conversion of gas energy into mechanical energy at the rear end of the high-pressure turbine mechanism "driven turbine" is also typically around 75%. The high-pressure turbine mechanism integrated energy conversion is thus about 0.75 x 0.75 = 56%.
From the above studies, it is found that if the "green ring air conditioner" structure is modified, the existing high-pressure turbine mechanism on the market is not an option, but cannot be found on the market, and the efficiency is not satisfactory. By comprehensive consideration, there is a need to develop an advanced high pressure turbine mechanism suitable for use in a "green ring air conditioner". While the high pressure turbine mechanism includes a gas turbine at the front end and a driven turbine at the rear end, both of which require an increase in energy conversion.
Disclosure of Invention
The utility model aims to provide a driven cone kettle turbine and a green ring space high pressure regulating turbine mechanism, which can be used for adapting to a green ring air conditioner, reduce energy loss and greatly improve energy conversion rate.
In order to achieve the above object, the present utility model provides a driven cone-pot turbine, comprising a first cone-shaped volute and a pneumatic cone-pot turbine which are rotatably connected with each other; the first conical volute is internally provided with a pneumatic conical turbine cavity, and a pressure gas outlet tangentially connected with the pneumatic conical turbine cavity is arranged on the first conical volute; the pneumatic cone kettle turbine comprises a turbine power input shaft, wherein vortex air suction blades, a first turbine cone kettle body and a turbine centrifugal impeller are sequentially arranged on the turbine power input shaft along the axial direction of the turbine power input shaft, and the middle parts of the turbine power input shaft, the first turbine cone kettle body and the turbine centrifugal impeller are sequentially communicated along the air flow direction; the first turbine cone kettle body is also internally provided with a conjoined impeller; the turbine centrifugal impeller is positioned in the turbine cavity of the pneumatic cone kettle; the vortex suction air blades are arranged around the turbine power input shaft, and an air suction opening is formed between every two adjacent vortex suction air blades She Waiyuan.
As a further improvement of the utility model, the turbine cavity of the pneumatic cone kettle is provided with a vortex nozzle at the outer side of the centrifugal impeller of the turbine, the vortex nozzle is communicated with an annular air channel in the turbine cavity of the pneumatic cone kettle, and the annular air channel is communicated with a pressure gas outlet through a compressed air vortex channel.
As a further improvement of the utility model, one side of the vortex suction air blades, which is far away from the first turbine cone kettle body, is connected with a first turbine cover plate; and one side of the turbine centrifugal impeller, which is far away from the first turbine cone kettle body, is connected with a second turbine cover plate.
As a further improvement of the utility model, the first conical volute is provided with a first bearing seat, the first bearing seat is provided with a first bearing cavity communicated with the turbine cavity of the pneumatic conical kettle, and the first bearing cavity is internally provided with a first bearing contacted with the second turbine cover plate; the first bearing seat is provided with a first shaft hole communicated with the first bearing cavity, and the turbine power input shaft passes through the first bearing and the first shaft hole; the side wall of the middle part of the first shaft hole is provided with a first lubrication cavity, and the first lubrication cavity is communicated with the outer wall of the first bearing seat through a first oil filling hole.
As a further improvement of the utility model, the first conical volute comprises a first conical kettle shell which is in rotating fit with the first turbine conical kettle body; a first sealing ring is arranged between the inner end surface of the first conical kettle shell and the outer end surface of the first turbine conical kettle body; the first sealing ring is a polytetrafluoroethylene ring.
As a further improvement of the utility model, the cross-sectional dimension of the first turbine cone kettle body gradually increases from the vortex suction impeller to the turbine centrifugal impeller.
As a further improvement of the utility model, the vortex suction impeller, the conjoined impeller and the turbine centrifugal impeller have the same vane rotation direction.
In order to achieve the above purpose, the utility model also provides a green annular space high pressure regulating turbine mechanism, which comprises a aerodynamic cone kettle turbine and a driven cone kettle turbine, wherein the aerodynamic cone kettle turbine comprises a second cone volute and a high pressure aerodynamic cone kettle turbine which are connected with each other in a rotating way; the second conical volute is internally provided with a turbine cavity for accommodating the conical kettle, and the second conical volute is provided with a pressure relief accelerating tube which is communicated with a tangent line of the turbine cavity for accommodating the conical kettle; the high-pressure pneumatic taper kettle turbine comprises a turbine power output shaft, a turbine impact impeller, a second turbine taper kettle body and an air outlet are sequentially arranged on the turbine power output shaft along the axial direction, and the middle parts of the turbine impact impeller, the second turbine taper kettle body and the air outlet are sequentially communicated along the air flow direction; the second turbine cone kettle body is also internally provided with a first rotation reducing rib; the exhaust outlet is arranged towards the coaxial line with the turbine power output shaft; the turbine impact impeller and the second turbine cone pot body are both positioned in the turbine cavity of the accommodating cone pot; the turbine power output shaft of the gas power cone kettle turbine is connected with the turbine power input shaft of the driven cone kettle turbine.
As a further improvement of the utility model, the two sides of the turbine impact impeller are respectively provided with a third turbine cover plate and a fourth turbine cover plate, and the fourth turbine cover plate is positioned between the turbine impact impeller and the second turbine cone kettle body; the second conical volute is provided with a second bearing seat, the second bearing seat is provided with a second bearing cavity communicated with the turbine cavity of the accommodating conical kettle, and a second bearing contacted with the third turbine cover plate is arranged in the second bearing cavity; the second bearing seat is provided with a second shaft hole communicated with the second bearing cavity, and the turbine power output shaft penetrates through the second bearing and the second shaft hole; the side wall of the middle part of the second shaft hole is provided with a second lubrication cavity, and the second lubrication cavity is communicated with the outer wall of the second bearing seat through a second oil filling hole; the second cone-shaped volute comprises a second cone pot shell which is in running fit with the second turbine cone pot body; a second sealing ring is arranged between the inner end surface of the second conical kettle shell and the second turbine conical kettle body (the outer end surface is provided with a polytetrafluoroethylene ring).
As a further improvement of the utility model, one end of the second conical volute housing containing the conical kettle turbine cavity is provided with a depressurization gas outlet, and the exhaust outlet of the high-pressure pneumatic conical kettle turbine is positioned at the inner side of the depressurization gas outlet; the inner side of the air outlet is connected with a second rotation reducing rib; the pressure relief accelerating tube comprises a high-pressure gas nozzle positioned at the output end of the pressure relief accelerating tube, the cross section area of a gas channel in the high-pressure gas nozzle is gradually reduced along the direction of the gas flow, and the high-pressure gas nozzle is positioned in a turbine cavity of the accommodating cone kettle; and a yielding gap matched with the high-pressure gas nozzle is formed at the outer edge of the turbine impact impeller.
Advantageous effects
Compared with the prior art, the driven cone kettle turbine and green annular space high pressure regulating turbine mechanism has the advantages that:
1. for the aerodynamic cone kettle turbine of the green annular high-pressure regulating turbine mechanism, high-pressure gas enters a pressure relief accelerating tube through an electric control valve, passes through a high-pressure gas nozzle at the speed of V1, is compressed and accelerated to V2, and is injected into an impact turbine impact impeller to drive the high-pressure aerodynamic cone kettle turbine to rotate. The dynamic gas forms vortex in the inner cavity of the turbine cone kettle body, is decelerated by the first rotation reducing ribs, is decelerated again by the second rotation reducing ribs and is discharged from the air outlet of the high-pressure pneumatic cone kettle turbine. Because the diameter of the air outlet is very small, the energy of the airflow vortex driven by the air outlet is very small, and therefore, the tail end does not need to be provided with a reverse spraying structure.
2. Since the cone-type scroll is stationary, the pneumatic cone-type turbine is rapidly rotated. It is therefore a challenge to prevent leakage of gas from the micro-gap between the cone-shaped volute and the pneumatic cone-pot turbine and to reduce frictional losses between them. For this purpose, two Polytetrafluoroethylene (PTFE) rings are specially arranged between the conical volute and the turbine of the high-pressure pneumatic conical kettle, and lubricating oil is injected, so that the effects of preventing leakage and reducing friction loss can be achieved well. Two Polytetrafluoroethylene (PTFE) rings can greatly increase the flow resistance of air, while the presence of lubricating oil makes air leakage extremely small. The polytetrafluoroethylene ring has excellent self-lubricating function, and has excellent performances in the aspects of temperature resistance, wear resistance, strength and the like, and the friction loss between the second conical volute and the high-pressure pneumatic conical kettle turbine and between the first conical volute and the pneumatic conical kettle turbine is very small due to the existence of lubricating oil.
3. The energy of the pneumatic cone kettle turbine of the green annular space high-pressure regulating turbine mechanism mainly comprises the rotation mechanical energy of the high-pressure pneumatic cone kettle turbine and the kinetic energy of discharged gas, and the energy of the discharged gas is extremely low after passing through the first rotation reducing fins and the second rotation reducing fins, so that the energy is basically converted into the rotation mechanical energy of the high-pressure pneumatic cone kettle turbine, the energy loss is reduced, and the energy conversion rate of the pneumatic cone kettle turbine can be about 90%.
4. For the driven cone kettle turbine, gas is sucked into the cone She Xiru by the turbine at the speed of V4, is pressurized and accelerated to V5 by the conjoined impeller, then enters the cone kettle cavity to form vortex, is thrown into the vortex nozzle by the turbine centrifugal impeller to form pressure air flow at the speed of V6, and flows through the compressed air vortex and the one-way cone valve to be blown into the warm-pressing box at the speed of V7. The whole process air is pressurized by three stages of turbine suction blades, a conjoined impeller and a turbine centrifugal impeller. Therefore, the energy conversion rate of the driven cone kettle turbine can be about 90 percent.
5. The green annular high-pressure regulating turbine mechanism is very suitable for the green annular air conditioner in terms of structure and technical performance through targeted design. The green annular high-pressure regulating turbine mechanism completes energy conversion by gas entering the cone kettle turbine body, and the difficult problems of gas leakage and impact between the turbine and the shell cover and two larger energy losses of tail vortex in the prior art are eliminated. The three-stage energy absorption conversion in the turbine body of the first cone kettle is used for realizing the reduction of the size of the mechanism, and the mechanism is more efficient and has lower noise. The overall energy rate of the green annular high-pressure regulating turbine mechanism can reach about 80% theoretically.
The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a green annulus high pressure turbine mechanism;
FIG. 2 is a top view of the driven cone kettle way;
FIG. 3 is a front view of the driven cone turbine;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a front cross-sectional view of the first cone-type volute;
FIG. 7 is a top cross-sectional view of the first cone scroll;
FIG. 8 is a front view of the pneumatic cone turbine;
FIG. 9 is a front cross-sectional view of the pneumatic cone turbine;
FIG. 10 is a cross-sectional view of C-C of FIG. 8;
FIG. 11 is a D-D sectional view of FIG. 8;
FIG. 12 is a schematic view of the gas flow from the driven cone turbine;
FIG. 13 is a top view of the aerodynamic cone turbine;
FIG. 14 is a front view of a aerodynamic cone turbine;
FIG. 15 is a sectional E-E view of FIG. 13;
FIG. 16 is a cross-sectional F-F view of FIG. 14;
FIG. 17 is a front cross-sectional view of the second cone scroll;
FIG. 18 is a top cross-sectional view of the second cone;
FIG. 19 is a front view of the high pressure pneumatic cone jug turbine;
FIG. 20 is a front cross-sectional view of the high pressure pneumatic cone jug turbine;
FIG. 21 is a G-G cross-sectional view of FIG. 19;
FIG. 22 is a cross-sectional H-H view of FIG. 19;
FIG. 23 is a schematic gas flow diagram of a aerodynamic cone turbine.
Detailed Description
Embodiments of the present utility model will now be described with reference to the accompanying drawings.
Examples
The embodiment of the utility model is shown in fig. 2 to 12, and the driven cone kettle turbine comprises a first cone-shaped volute 1 and a pneumatic cone kettle turbine 2 which are connected with each other in a rotating manner. The first conical volute 1 is internally provided with a pneumatic conical turbine chamber 13, and the first conical volute 1 is provided with a pressure gas outlet 14 tangentially connected with the pneumatic conical turbine chamber 13. The pneumatic cone pot turbine 2 comprises a turbine power input shaft 21, wherein vortex air suction blades 28, a first turbine cone pot body 24 and a turbine centrifugal impeller 22 are sequentially arranged on the turbine power input shaft 21 along the axial direction of the turbine power input shaft, and the middle parts of the turbine power input shaft 21, the first turbine cone pot body 24 and the turbine centrifugal impeller 22 are sequentially communicated along the air flow direction. A conjoined impeller 26 is also provided within the first turbine cone kettle 24. The turbine centrifugal impeller 22 is located within the pneumatic cone jug turbine chamber 13. The vortex suction blades 28 are provided in a plurality and are arranged around the turbine power input shaft 21, and suction openings 281 are formed between the circumferential outer edges of the adjacent vortex suction blades 28. The suction port 281 is located on the outer circumferential surface of the impeller constituted by a plurality of vortex suction blades 28.
The turbine cavity 13 of the pneumatic cone kettle is provided with a vortex nozzle 16 positioned outside the centrifugal impeller 22 of the turbine, the vortex nozzle 16 is communicated with an annular air channel in the turbine cavity 13 of the pneumatic cone kettle, and the annular air channel is communicated with the pressure gas outlet 14 through a compressed air vortex 15. A one-way cone valve 141 is connected to the pressure gas outlet 14.
A first turbine cover plate 27 is connected to one side of the vortex suction blades 28 away from the first turbine cone pot 24. A second turbine cover plate 23 is connected to the turbine centrifugal impeller 22 on a side thereof remote from the first turbine cone 24. The first turbine cover plate 27 ensures that the air flow is drawn only from outside the vortex suction vanes 28.
The first cone-shaped volute 1 is provided with a first bearing seat 111, the first bearing seat 111 is provided with a first bearing cavity 1114 communicated with the turbine cavity 13 of the pneumatic cone kettle, and the first bearing cavity 1114 is internally provided with a first bearing 5 contacted with the second turbine cover plate 23. The first bearing housing 111 is provided with a first shaft hole 1111 communicating with the first bearing chamber 1114, and the turbine power input shaft 21 passes through the first bearing 5 and the first shaft hole 1111. The side wall of the middle part of the first shaft hole 1111 is provided with a first lubrication cavity 1112, the first lubrication cavity 1112 is communicated with the outer wall of the first bearing seat 111 through a first oil injection hole 1113, and lubrication effect is achieved through injection of lubricating oil.
The first cone-shaped volute 1 includes a first cone housing 121 that is in rotational engagement with the first turbine cone 24. A first sealing ring 6 is arranged between the inner end surface of the first cone kettle shell 121 and the outer end surface of the first turbine cone kettle body 24. The first sealing ring 6 is a polytetrafluoroethylene ring. In this embodiment, the outer end surface of the first turbine cone kettle body 24 is perpendicular to the axis of the turbine power input shaft 21, and two first semicircular grooves 241 with different diameters and concentrically arranged are provided on the outer end surface of the first turbine cone kettle body 24. The inner end surface of the first conical kettle shell 121 is perpendicular to the axis of the turbine power input shaft 21 and is opposite to the outer end surface of the first turbine conical kettle body 24, two second semicircular annular grooves 122 which are concentrically arranged and have different diameters are arranged on the inner end surface of the first conical kettle shell 121, and polytetrafluoroethylene rings are arranged between each two corresponding first semicircular annular grooves 241 and second semicircular annular grooves 122, namely, the number of polytetrafluoroethylene rings is two.
The first conical volute 1 comprises a first volute 11 and a second volute 12 which are buckled with each other, and flange plates at the outer edges of buckling surfaces of the first volute 11 and the second volute 12 are connected through bolts 4. The pneumatic cone turbine chamber 13 is located between the inner walls of the first volute 11 and the second volute 12. The first bearing seat 111 is arranged on the volute cover of the first volute 11, the first cone housing 121 is arranged on the second volute 12, and one end of the second volute 12 is provided with a pneumatic cone turbine perforation 17. The first turbine cone kettle body 24 comprises a cone section and a straight section which are sequentially connected along the airflow direction, the cone section of the first turbine cone kettle body 24 is matched with the inner cone surface of the first cone kettle shell 121, and the straight section of the first turbine cone kettle body 24 penetrates out from the pneumatic cone kettle turbine perforation 17.
The cross-sectional dimension of the first turbine cone 24 increases from the vortex suction impeller 28 toward the turbine centrifugal impeller 22.
The vortex suction impeller 28, the conjoined impeller 26 and the turbine centrifugal impeller 22 have the same vane rotation direction. The plurality of blades of the conjoined vane 26 are spirally arranged in the axial direction.
An annular high pressure turbine mechanism is shown in fig. 1 and comprises a pneumatic cone and a driven cone, wherein the pneumatic cone is shown in fig. 13-23. The aerodynamic cone turbine comprises a second cone-shaped volute 7 and a high-pressure aerodynamic cone-shaped turbine 8 which are connected with each other in a rotating way. The second cone-shaped volute 7 is internally provided with a turbine cavity 74 for accommodating the cone pot, and the second cone-shaped volute 7 is provided with a pressure relief accelerating tube 71 which is tangentially communicated with the turbine cavity 74 for accommodating the cone pot. The high-pressure pneumatic cone kettle turbine 8 comprises a turbine power output shaft 81, wherein a turbine impact impeller 82, a second turbine cone kettle body 85 and an air outlet 86 are sequentially arranged on the turbine power output shaft 81 along the axial direction, and the middle parts of the turbine impact impeller, the second turbine cone kettle body and the air outlet 86 are sequentially communicated along the air flow direction. A first rotation reducing rib 87 is also provided in the second turbine cone kettle body 85. The cross-section of the inner cavity of the second turbine cone 85 gradually decreases from the turbine impact impeller 82 toward the exhaust outlet 86. In this embodiment, the first rotation reducing ribs 87 are 4 pieces and are uniformly distributed around the turbine power output shaft 81, and each first rotation reducing rib 87 is vertically connected to a side wall of the turbine power output shaft 81. The exhaust port 86 is oriented coaxially with the turbine power take-off shaft 81. The turbine impingement impeller 82 and the second turbine cone 85 are both located within the cone-receiving turbine cavity 74. The turbine power output shaft 81 of the gas power cone turbine is clamped with the turbine power input shaft 21 of the driven cone turbine through shaft protrusions and clamping grooves, and the shaft protrusions are connected with the clamping grooves through bolts.
The third turbine cover plate 83 and the fourth turbine cover plate 84 are respectively arranged on two axial sides of the turbine impact impeller 82, and the fourth turbine cover plate 84 is located between the turbine impact impeller 82 and the second turbine cone kettle body 85. The second cone-shaped volute 7 is provided with a second bearing 73, the second bearing seat 73 is provided with a second bearing cavity 732 communicated with the turbine cavity 74 for accommodating the cone, and the second bearing cavity 732 is internally provided with a second bearing 10 contacted with the third turbine cover plate 83. The second bearing housing 73 is provided with a second shaft hole 731 communicating with the second bearing chamber 732, and the turbine power output shaft 81 passes through the second bearing 10 and the second shaft hole 731. The second lubrication cavity 733 is arranged on the side wall of the middle part of the second shaft hole 731, and the second lubrication cavity 733 is communicated with the outer wall of the second bearing seat 73 through the second oil filling hole 734. By injecting the lubricating oil into the second oil injection hole 734, the lubricating effect can be achieved. Wherein the second bearing housing 73 is in contact with the outer side surface of the third turbine cover plate 83.
The second cone scroll 7 includes a second cone housing 77 in rotational engagement with a second turbine cone 85. A second sealing ring 9 is arranged between the inner end surface of the second conical kettle shell 77 and the outer end surface of the second turbine conical kettle body 85. The seal ring 9 is a polytetrafluoroethylene ring. In this embodiment, two third semicircular grooves 76 with different diameters are concentrically arranged on the inner end surface of the second conical kettle shell 77, two fourth semicircular grooves 88 with different diameters are concentrically arranged on the outer end surface of the second conical kettle body 85, and two second sealing rings 9 are respectively arranged between every two corresponding third semicircular grooves 76 and fourth semicircular grooves 88, namely, two second sealing rings 9 of polytetrafluoroethylene rings are arranged.
One end of the second cone-shaped volute 7, which is used for accommodating the cone-shaped turbine cavity 74, is provided with a depressurization gas outlet 72, and an air outlet 86 of the high-pressure pneumatic cone-shaped turbine 8 is positioned at the inner side of the depressurization gas outlet 72. Four second rotation reducing ribs 89 are connected to the inner side of the air outlet 86, each second rotation reducing rib 89 is perpendicular to the inner wall of the air outlet 86, and the plane of each second rotation reducing rib 89 is parallel to the turbine power output shaft 81. The pressure relief accelerating tube 71 includes a high-pressure gas nozzle 711 at its output end, the gas passage cross-sectional area in the high-pressure gas nozzle 711 is gradually reduced in the gas flow direction, and the high-pressure gas nozzle 711 is located in the housing cone turbine cavity 74. The outer edge of the turbine impingement wheel 82 is provided with relief notches that fit into the high pressure gas nozzles 711. The second cone-shaped scroll 7 is further provided with a nozzle hole 75 provided in an inner wall of the turbine cavity 74 of the accommodating cone, and a high-pressure gas nozzle 711 penetrates into the turbine cavity 74 of the accommodating cone from the nozzle hole 75. The second cone-shaped volute 7 comprises a third volute and a fourth volute which are buckled with each other, and the edges of the third volute and the fourth volute are connected through bolts 4.
When the aerodynamic cone turbine works, high-pressure gas enters the pressure relief accelerating tube 71 through the electric control valve, passes through the high-pressure gas nozzle 711 at the speed of V1, is compressed and accelerated to V2, and is injected into the impact turbine impact impeller 82 to drive the high-pressure aerodynamic cone turbine 8 to rotate. The motive gas forms a vortex in the inner cavity of the second turbine cone kettle body 85, is decelerated by the first vortex reduction ribs 87, is decelerated again by the second vortex reduction ribs 89, and is discharged from the air outlet 86 of the high-pressure turbine cone kettle turbine. Because the diameter of the air outlet 86 is small, the energy of the airflow vortex driven by the air outlet is very small, and therefore, the tail end does not need to be provided with a back spraying structure. The kinetic energy of the high pressure gas is largely converted into mechanical energy of the high pressure gas cone turbine 8 and transmitted to the turbine power input shaft 21 of the gas cone turbine 2 of the driven cone turbine through the turbine power output shaft 81, and the gas cone turbine 2 rotates with respect to the first cone-shaped volute 1.
When the driven cone kettle turbine works, low-speed gas is sucked by the turbine suction air blades 28 at the speed of V4, is pressurized and accelerated to V5 through the connected impeller 26, enters the cone kettle cavity 25 to form vortex, is thrown into the vortex channel nozzle 16 by the turbine centrifugal impeller 22 to form pressure air flow at the speed of V6, and is blown into the warm-pressing box through the compressed air vortex channel 15 and the one-way cone valve 141 at the speed of V7. The whole process air is pressurized by three stages of turbine suction blades 28, a connected impeller 26 and a turbine centrifugal impeller 22. Therefore, the energy conversion rate of the driven cone kettle turbine can be about 90 percent.
1. The 'green annular space high pressure regulating turbine mechanism' is a pneumatic cone kettle turbine according to the principle of conservation of energy:
Q out of ＝Q Into (I) -Q Row of rows -Q w
Q Out of -net output mechanical energy
Q Into (I) Input airflow energy
Q Row of rows The residual energy of the exhaust gas flow, which is related to the design of the exhaust port, can be controlled within 2%.
Q w The energy loss of gas leakage, wind resistance of the gas channel, bearing friction and the like can be controlled within 5 percent.
From the above formula, the energy conversion efficiency of the pneumatic cone kettle turbine of the green annular high pressure regulating turbine mechanism is feasible to achieve about 90%.
The correlation calculation formula:
(1) Gas pressure and velocity conversion formula:
V 2 ＝200g(P1-P2)
wherein: v-jet velocity (m/s)
g-gravity acceleration 9.8 (N/Kg)
P1-pressure (mpa)
P2-pressure (mpa)
(2) Relationship between area and speed of same-pressure air flow:
S 1 /S 2 ＝V 2 /V 1
wherein: s is S 1 -air flow section 1 (m) 2 )
S 2 -air flow section 2 (m) 2 )
V 1 -the velocity of the air flow (m/s) through section 1
V 2 -the velocity of the air flow (m/s) through section 2
Taking part of calculation results of a high-pressure gas dynamic cone turbine parameter calculation table as an example, the method specifically comprises the following steps:
parameter calculation meter for high-pressure gas power cone kettle turbine
The calculation shows that the energy conversion rate of the pneumatic cone kettle turbine of the green annular high pressure regulating turbine mechanism can be about 90%.
2. The driven cone kettle turbine of the green annular space high pressure regulating turbine mechanism is based on the principle of conservation of energy:
Q out of ＝Q Into (I) -Q Valve -Q w
Q Out of -net output air energy
Q Into (I) -input mechanical energy
Q Valve The cone valve energy consumption coefficient can be controlled within 2 percent.
Q w The energy loss of gas leakage, wind resistance of the gas channel, bearing friction and the like can be controlled within 5 percent.
From the above formula, the energy conversion efficiency of the driven cone kettle turbine of the green annular high pressure regulating turbine mechanism is feasible to achieve about 90%.
The correlation calculation formula:
(1) Gas pressure and velocity conversion formula:
V 2 ＝200g(P1-P2)
wherein: v-jet velocity (m/s)
g-gravity acceleration 9.8 (N/Kg)
P1-pressure (mpa)
P2-pressure (mpa)
(2) Relationship between area and speed of same-pressure air flow:
S 1 /S 2 ＝V 2 /V 1
wherein: s is S 1 -air flow section 1 (m) 2 )
S 2 -air flow section 2 (m) 2 )
V 1 -the velocity of the air flow (m/s) through section 1
V 2 -the velocity of the air flow (m/s) through section 2
The calculation result of the driven cone kettle turbine parameter calculation table is exemplified by the following specific steps:
driven cone kettle turbine parameter calculation table
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The calculation shows that the energy conversion rate of the driven cone kettle turbine of the green annular high pressure regulating turbine mechanism can be about 90%.
The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.
Claims (10)
1. The driven cone kettle turbine is characterized by comprising a first cone-shaped volute (1) and a pneumatic cone kettle turbine (2) which are connected with each other in a rotating way; a pneumatic cone pot turbine cavity (13) is arranged in the first cone-shaped volute (1), and a pressure gas outlet (14) tangentially connected with the pneumatic cone pot turbine cavity (13) is arranged on the first cone-shaped volute (1); the pneumatic cone kettle turbine (2) comprises a turbine power input shaft (21), wherein vortex air suction blades (28), a first turbine cone kettle body (24) and a turbine centrifugal impeller (22) are sequentially arranged on the turbine power input shaft (21) along the axial direction of the turbine power input shaft, and the middle parts of the turbine power input shaft, the first turbine cone kettle body and the turbine centrifugal impeller are sequentially communicated along the air flow direction; a conjoined impeller (26) is also arranged in the first turbine cone kettle body (24); the turbine centrifugal impeller (22) is positioned in the pneumatic cone kettle turbine cavity (13); the vortex air suction blades (28) are arranged around the turbine power input shaft (21), and an air suction port (281) is formed between the outer edges of the adjacent vortex air suction blades (28).
2. The driven cone kettle turbine as claimed in claim 1, wherein a vortex nozzle (16) is arranged in the pneumatic cone kettle turbine cavity (13) and positioned outside the turbine centrifugal impeller (22), the vortex nozzle (16) is communicated with an annular air channel in the pneumatic cone kettle turbine cavity (13), and the annular air channel is communicated with the pressure gas outlet (14) through a compressed air vortex channel (15); the pressure gas outlet (14) is connected with a one-way cone valve (141).
3. A driven cone kettle turbine as claimed in claim 1, wherein a first turbine cover plate (27) is connected to the side of the vortex suction blades (28) remote from the first turbine cone kettle body (24); and a second turbine cover plate (23) is connected to one side of the turbine centrifugal impeller (22) far away from the first turbine cone kettle body (24).
4. A driven cone turbine according to claim 3, characterized in that the first cone-shaped volute (1) is provided with a first bearing seat (111), the first bearing seat (111) is provided with a first bearing cavity (1114) communicated with the pneumatic cone-shaped turbine cavity (13), and the first bearing cavity (1114) is internally provided with a first bearing (5) contacted with the second turbine cover plate (23); a first shaft hole (1111) communicated with the first bearing cavity (1114) is formed in the first bearing seat (111), and the turbine power input shaft (21) penetrates through the first bearing (5) and the first shaft hole (1111); a first lubrication cavity (1112) is formed in the middle side wall of the first shaft hole (1111), and the first lubrication cavity (1112) is communicated with the outer wall of the first bearing seat (111) through a first oil injection hole (1113).
5. A driven cone kettle turbine as claimed in claim 4, wherein said first cone scroll (1) comprises a first cone kettle housing (121) in rotational engagement with a first turbine cone kettle body (24); a first sealing ring (6) is arranged between the inner end surface of the first conical kettle shell (121) and the outer end surface of the first turbine conical kettle body (24); the first sealing ring (6) is a polytetrafluoroethylene ring.
6. A driven cone kettle turbine as claimed in claim 1, wherein the cross-sectional dimension of said first turbine cone kettle body (24) increases gradually from the vortex suction blades (28) towards the turbine centrifugal impeller (22).
7. A driven cone and kettle turbine as claimed in claim 1, wherein the blades of said vortex suction impeller (28), conjoined impeller (26) and turbine centrifugal impeller (22) are the same in rotation direction.
8. A green annulus high pressure regulating turbine mechanism comprising a aerodynamic cone and a driven cone according to any one of claims 1-7, said aerodynamic cone comprising a second conical volute (7) and a high pressure aerodynamic cone turbine (8) rotationally connected to each other; a turbine cavity (74) for accommodating the conical kettle is formed in the second conical volute (7), and a pressure relief accelerating tube (71) which is tangentially communicated with the turbine cavity (74) for accommodating the conical kettle is arranged on the second conical volute (7); the high-pressure pneumatic taper kettle turbine (8) comprises a turbine power output shaft (81), a turbine impact impeller (82), a second turbine taper kettle body (85) and an air outlet (86) are sequentially arranged on the turbine power output shaft (81) along the axial direction, and the middle parts of the turbine impact impeller, the second turbine taper kettle body and the air outlet are sequentially communicated along the air flow direction; a first rotation reducing rib (87) is also arranged in the second turbine cone kettle body (85); the exhaust outlet (86) is arranged towards the coaxial line with the turbine power output shaft (81); the turbine impact impeller (82) and the second turbine cone pot (85) are both positioned in the cone pot accommodating turbine cavity (74); the turbine power output shaft (81) of the gas power cone turbine is connected with the turbine power input shaft (21) of the driven cone turbine.
9. The green annulus pressure regulating turbine mechanism of claim 8, wherein a third turbine cover plate (83) and a fourth turbine cover plate (84) are provided on each side of the turbine impact impeller (82), the fourth turbine cover plate (84) being located between the turbine impact impeller (82) and the second turbine cone kettle (85); a second bearing seat (73) is arranged on the second conical volute (7), a second bearing cavity (732) communicated with the turbine cavity (74) of the accommodating conical kettle is arranged on the second bearing seat (73), and a second bearing (10) contacted with a third turbine cover plate (83) is arranged in the second bearing cavity (732); a second bearing hole (731) communicated with the second bearing cavity (732) is formed in the second bearing seat (73), and the turbine power output shaft (81) penetrates through the second bearing (10) and the second bearing hole (731); a second lubrication cavity (733) is formed in the middle side wall of the second shaft hole (731), and the second lubrication cavity (733) is communicated with the outer wall of the second bearing seat (73) through a second oil injection hole (734); the second conical volute (7) comprises a second conical kettle shell (77) which is in rotating fit with a second turbine conical kettle body (85); a second sealing ring (9) is arranged between the inner end surface of the second conical kettle shell (77) and the outer end surface of the second turbine conical kettle body (85); the sealing ring (9) is a polytetrafluoroethylene ring.
10. The green annular high-pressure regulating turbine mechanism according to claim 8, wherein one end of a cone-pot-accommodating turbine cavity (74) of the second cone-shaped volute (7) is provided with a depressurization gas outlet (72), and an exhaust outlet (86) of the high-pressure pneumatic cone-pot turbine (8) is positioned at the inner side of the depressurization gas outlet (72); the inner side of the air outlet (86) is connected with a second rotation reducing rib (89); the pressure relief accelerating tube (71) comprises a high-pressure gas nozzle (711) positioned at the output end of the pressure relief accelerating tube, the cross-sectional area of a gas channel in the high-pressure gas nozzle (711) is gradually reduced along the gas flow direction, and the high-pressure gas nozzle (711) is positioned in the turbine cavity (74) of the accommodating cone kettle; the outer edge of the turbine impact impeller (82) is provided with a yielding gap matched with the high-pressure gas nozzle (711).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321873653.1U CN220551167U (en) | 2023-07-17 | 2023-07-17 | Driven cone kettle turbine and green annular space high-pressure regulating turbine mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321873653.1U CN220551167U (en) | 2023-07-17 | 2023-07-17 | Driven cone kettle turbine and green annular space high-pressure regulating turbine mechanism |
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| Publication Number | Publication Date |
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| CN220551167U true CN220551167U (en) | 2024-03-01 |
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| CN202321873653.1U Active CN220551167U (en) | 2023-07-17 | 2023-07-17 | Driven cone kettle turbine and green annular space high-pressure regulating turbine mechanism |
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| Country | Link |
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| CN (1) | CN220551167U (en) |
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