CN202500618U - Back-to-back multistage centripetal turbine system - Google Patents
Back-to-back multistage centripetal turbine system Download PDFInfo
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- CN202500618U CN202500618U CN 201220059417 CN201220059417U CN202500618U CN 202500618 U CN202500618 U CN 202500618U CN 201220059417 CN201220059417 CN 201220059417 CN 201220059417 U CN201220059417 U CN 201220059417U CN 202500618 U CN202500618 U CN 202500618U
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Abstract
The utility model discloses a back-to-back multistage centripetal turbine system and relates to the turbine technology. The system comprises a turbine expansion machine system, a heating system and a gear transmission system. The multistage centripetal turbine system possesses an even number of centripetal turbines. A stage number is 2 to 8. The number of the stage number is determined by a size of an expansion ratio. The each stage is formed by one centripetal turbine or the plurality of centripetal turbines. The each two centripetal turbines are arranged on one shaft as a back-to-back mode, possess a same rotation speed and can balance axial thrust of a rotor. An inlet temperature of the multistage centripetal turbine is 220K to 973K and an inlet pressure is 3bar to 340bar. Shaft power generated by the two coaxial centripetal turbines is output to a generator or is served as power supply of industrial production. The multistage centripetal turbine system of the utility model possesses the following advantages that: the expansion ratio is high; a structure is simple and compact; efficiency is high and operation reliability is high too; waste heat with the middle and low temperature ( a calorific value ) can be recycled and so on.
Description
Technical field
The utility model relates to the turbine expansion technical field, is a kind of back-to-back multistage radial-inward-flow turbine system with inter-stage heating.
Background technique
Radial-inward-flow turbine is widely used in the fields such as expansion turbine of middle-size and small-size gas turbine, turbosupercharger, refrigeration plant and liquefaction plant, have simple and compact for structure, manufacturing process is simple, advantage such as cheap, easy for installation.The efficient of single-stage radial-inward-flow turbine is very high, particularly under the situation of small flow, can also keep very high efficient, and present single-stage radial-inward-flow turbine isentropic efficiency can reach more than 90%.Simultaneously, the radial-inward-flow turbine single-stage expansion is than high, and the expansion ratio that the single-stage radial-inward-flow turbine is accomplished can reach the twice of axial-flow turbine even more.
Because the particularity of radial-inward-flow turbine structure, the difficulty that multistage radial-inward-flow turbine is realized is very big, and from disclosed data, the overwhelming majority is a single-stage radial-inward-flow turbine system, and multistage radial-inward-flow turbine system is seldom arranged.Along with the inlet pressure of turbine expansion system is increasingly high, the expansion ratio of system requirements constantly increases, and the single-stage radial-inward-flow turbine has satisfied not existing demand.And gas is under high-pressure situations; Volume flowrate is less; The efficient of other forms of turbo-expander is not high, and radial-inward-flow turbine still can keep very high efficient under the very little situation of volume flowrate, therefore presses for the multistage radial-inward-flow turbine of a kind of high-efficiency reliable system.
The model utility content
The purpose of the utility model is to disclose a kind of back-to-back multistage radial-inward-flow turbine system, has the inter-stage heater, be that a kind of efficient is high, operational reliability is high, operating cost is low, expansion ratio is high, can utilize in the multistage radial-inward-flow turbine system of low temperature (calorific value).
For achieving the above object, the technical solution of the utility model is:
A kind of back-to-back multistage radial-inward-flow turbine system comprises radial-inward-flow turbine group, heat exchanger, generator, speed-changing gear box, valve, many axles and many pipelines; Its radial-inward-flow turbine group comprises multistage radial-inward-flow turbine, and progression is 2～8 grades, and what of progression are by the size decision of the expansion ratio of the required completion of energy conversion system;
Be at least the two-stage radial-inward-flow turbine, every grade comprises at least one radial-inward-flow turbine, and two radial-inward-flow turbine corotation moving axis are affixed back-to-back; Radial-inward-flow turbines at different levels interlink through many pipelines, at least one heat exchanger;
Be provided with modulating valve, three-way valve in the pipeline;
Multistage rotatingshaft is connected with speed-changing gear box respectively, and the main output shaft of speed-changing gear box is connected with the live axle of generator or other loads, through main output shaft output shaft work, drives generator or other loads;
The thermal source of heat exchanger is for coming from environment or middle-low temperature heat or solar thermal collector.
Described multistage radial-inward-flow turbine system, its said two radial-inward-flow turbine corotation moving axis are affixed back-to-back, are adjacent two-stage radial-inward-flow turbine series connection; Totally one rotatingshaft; Affixed with back-to-back mode, promptly totally one rotatingshaft is affixed back-to-back for first order radial-inward-flow turbine, second level radial-inward-flow turbine, and third level radial-inward-flow turbine, fourth stage radial-inward-flow turbine totally one rotatingshaft are affixed back-to-back; By that analogy to afterbody; When progression was odd number, afterbody was made up of two radial-inward-flow turbines, adopted coaxial back-to-back arranged in form;
The position of speed-changing gear box is positioned at the homonymy of two coaxial radial-inward-flow turbines;
First order radial-inward-flow turbine by the road, heat exchanger, pipeline and second level radial-inward-flow turbine interlink; Second level radial-inward-flow turbine by the road, heat exchanger, pipeline and third level radial-inward-flow turbine interlink; Third level radial-inward-flow turbine by the road, heat exchanger, pipeline and fourth stage radial-inward-flow turbine interlink, and by that analogy to afterbody (N), atmosphere is led in the outlet of afterbody (N) radial-inward-flow turbine;
Its flow process is:
Pressurized gas are heated to uniform temperature before getting into multistage radial-inward-flow turbine after; Through valve, pipeline input first order radial-inward-flow turbine; In first order radial-inward-flow turbine, get into heat exchanger after the expansion acting, raising temperature continued entering second level radial-inward-flow turbine expands and does work, and gets into the expansion of third level radial-inward-flow turbine through the heat exchanger continued again and does work; In this way; Finish after to the last one-level turbine (N) expands, the shaft work that radial-inward-flow turbine group inflation process produces is exported to speed-changing gear box through axle, drives generator or other loads by main output shaft output after the speed change.
Described multistage radial-inward-flow turbine system, the rotor of its said radial-inward-flow turbine is open type, semi-open type or enclosed.
Described multistage radial-inward-flow turbine system, pressurized gas wherein be air, nitrogen, oxygen, carbon dioxide, rock gas, freon or water vapour one of them.
Described multistage radial-inward-flow turbine system, the radial-inward-flow turbine number of its said multistage radial-inward-flow turbine system is an even number, adopts coaxial back-to-back arranged in form, to offset the axial force of turbo wheel, the shaft work of generation is exported by same output shaft.
Described multistage radial-inward-flow turbine system, pressurized gas wherein were heated to uniform temperature before getting into multistage radial-inward-flow turbine, and the temperature that makes the import of first order radial-inward-flow turbine is between 220K～973K, and inlet pressure is between 3bar～340bar; The expansion ratio of multistage radial-inward-flow turbine is between 3～340, and the exhaust pressure of afterbody (N) radial-inward-flow turbine is near normal pressure, or uses as the high-pressure air source of other equipment.
Described multistage radial-inward-flow turbine system; The expansion ratio of its said radial-inward-flow turbines at different levels; Determine jointly that by the total expansion ratio of multistage radial-inward-flow turbine and the axial force of radial-inward-flow turbine rotors at different levels the pressure ratio of back-to-back two radial-inward-flow turbines distributes will satisfy roughly balance of axial force.
Described multistage radial-inward-flow turbine system, its said heat exchanger is bushing type, shell of pipe type, jacketed type, heat accumulating type, hybrid, the combination of immersing coil pipe type one of them or they, the heat source temperature of heat exchanger is between 220K～973K.
Described multistage radial-inward-flow turbine system, its said thermal source is industrial waste heat, waste heat, atmosphere environment or heat-stored device for coming from environment or middle-low temperature heat.
Described multistage radial-inward-flow turbine system is when the exit flow of its said afterbody (N) radial-inward-flow turbine uses as low-temperature receiver, through the temperature of the inlet temperature of regulating the final stage turbine and the control outlet recently of expanding.
Described multistage radial-inward-flow turbine system, the size of the shaft work of its said main output shaft output through pressurized gas inlet flow rate and temperature, or is controlled through the temperature and the flow of heat exchanger.
Described multistage radial-inward-flow turbine system, its said three-way valve in three grades of radial-inward-flow turbine systems, comprises the radial-inward-flow turbine group, heat exchanger, speed-changing gear box, generator, modulating valve, rotatingshaft, pipeline;
Second level radial-inward-flow turbine by the road, heat exchanger, pipeline and triple valve inlet interlink; Three-way valve two outlets interlink with two radial-inward-flow turbines respectively; The third level comprises two radial-inward-flow turbines, the logical respectively atmosphere of the outlet B of two radial-inward-flow turbines, C or use as the source of the gas of other equipment;
During operation; Pressurized gas are heated to uniform temperature before getting into multistage radial-inward-flow turbine after; Through valve, pipeline input first order radial-inward-flow turbine, the back entering heat exchanger that does work that in first order radial-inward-flow turbine, expands improves the temperature continued and gets into second level radial-inward-flow turbine expansion acting; Difference is:
The third level comprises two radial-inward-flow turbines; The pressurized gas of second level radial-inward-flow turbine outlet are after the heat exchanger heating; Be divided into impartial two-part by three-way valve, a part enters atmosphere or gets into next flow process after getting into the acting of expanding in the radial-inward-flow turbine, and another part enters atmosphere or gets into next flow process after getting into the acting of expanding in another radial-inward-flow turbine; In this way, make the axial force of two radial-inward-flow turbine rotors of the third level offset; The size of main output shaft merit is controlled through the flow of valve regulated pressurized gas, or controls through the heat exchange quantity of regulating heat exchanger.
Described multistage radial-inward-flow turbine system; When its progression when multistage radial-inward-flow turbine system is 5 or 7; Its afterbody adopts two radial-inward-flow turbines, and the pressurized gas of its upper reaches radial-inward-flow turbine outlet are after the heat exchanger heating, and hot air flow is through two radial-inward-flow turbine actings of the impartial input of three-way valve.
The advantage of the utility model is: efficient height, compact structure, reliability are high, overall expansion ratio is high, are applicable to the acting of expanding of all kinds of pressurized gas, have wide use prospect.Environmentally friendly, can utilize in the recovery of thermal source, particularly used heat of low temperature (calorific value), improve resource utilization.
Description of drawings
Fig. 1 is a kind of back-to-back multistage radial-inward-flow turbine system embodiment 1 quaternary structure schematic representation of the utility model;
Fig. 2 is a kind of back-to-back multistage radial-inward-flow turbine system embodiment 2 tertiary structure schematic representation of the utility model;
Fig. 3 is a kind of back-to-back multistage radial-inward-flow turbine system embodiment 3 Pyatyi structural representations of the utility model;
Fig. 4 is a kind of back-to-back multistage radial-inward-flow turbine system embodiment 4 seven level structure schematic representation of the utility model.
Label among the figure:
18---speed-changing gear box
19---generator
26---modulating valve
27---three-way valve
15,16,17,40,58---axle
4,8,12,34,49,52,63---heat exchanger
2,6,10,14,31,32,41,42,43,44,45,46---radial-inward-flow turbine
1,3,5,7,9,11,13,20,21,22,23,24,25,28,29,30,33,35,36,37,38,39,47,48,50,51,53,54,55,56,57,59,60,61,62,64---pipeline
Embodiment
The back-to-back multistage radial-inward-flow turbine system of the utility model adopts the high-pressure air source acting of expanding step by step, satisfies customer requirements up to outlet pressure; Low temperature in the utilization (calorific value) thermal source carries out the inter-stage heating, and this process can be utilized used heat, waste heat, has improved resource utilization; Per two radial-inward-flow turbines adopt coaxial back-to-back pattern to arrange, to offset the axial force of radial-inward-flow turbine; Back-to-back two radial-inward-flow turbines have identical rotating speed, and the shaft work that impeller produces is exported by the same axis; The shaft work input gear-box of generations at different levels is exported to generator or other loads by main shaft after the speed change.Because there is following potential advantage in the multistage radial-inward-flow turbine system that the characteristic of radial-inward-flow turbine, the utility model propose:
Efficient is high: the isentropic efficiency of single-stage radial-inward-flow turbine reaches more than 90% at present, and this system can also be to the recycling of low-calorie thermal source in used heat and the waste heat etc., and therefore the efficient of this multistage radial-inward-flow turbine can reach more than 85%.
Compact structure: the back-to-back radial-inward-flow turbine of the utility model adopts coaxial back-to-back form, so not only makes the axial force counteracting of two turbine rotors, also makes compact structure, has saved space and manufacture cost.
Reliability is high: because should be back-to-back multistage radial-inward-flow turbine system develops to come on the technical foundation that has the single-stage radial-inward-flow turbine now, and shaft work is through the gear-box transmission, so the reliability of this multistage radial-inward-flow turbine is very high.
Overall expansion ratio is high: if every grade of expansion ratio is 2, then the expansion ratio of 8 grades of radial-inward-flow turbines is 216.At present the expansion ratio of the radial-inward-flow turbine of single-stage is between 1～10, so this multistage radial-inward-flow turbine can be easy to accomplish tens expansion ratios up to a hundred.
Be applicable to all kinds of pressurized gas: multistage radial-inward-flow turbine expands applicable to all kinds of pressurized gas such as air, nitrogen, oxygen, carbon dioxide, freon, rock gas or water vapour and does work.
The thermal source of low temperature in the utilization (calorific value): low-calorie thermal source carries out heat again with gas in can adopting; The increase system goes out merit, and the particularly used heat of industrial trade and waste heat are like cement industry, iron and steel metallurgical industry, chemical industry etc.; To improve rate of energy, reduce environmental pollution.
Embodiment:
As shown in Figure 1, be the structural representation of the back-to-back multistage radial-inward-flow turbine system embodiment 1 of the utility model.This is a level Four radial-inward-flow turbine system, comprises radial-inward- flow turbine 2,6,10,14, heat exchanger 4,8,12; Speed-changing gear box 18, generator 19, regulating valve 26; Axle 15,16,17, pipeline 1,3,5,7,9,11,13,20,21,22,23,24,25.
First order radial-inward-flow turbine 2 is affixed back-to-back through axle 17 with second level radial-inward-flow turbine 6, and third level radial-inward-flow turbine 10 is affixed back-to-back through axle 15 with fourth stage radial-inward-flow turbine 14. Axle 15,17 connects with main output shaft 16 through speed-changing gear box 18, and main output shaft 16 is affixed with generator 19 rotating shafts.First order radial-inward-flow turbine 2 by the road 3, heat exchanger 4, pipeline 5 interlink with second level radial-inward-flow turbine 6; Second level radial-inward-flow turbine 6 by the road 7, heat exchanger 8, pipeline 9 interlink with third level radial-inward-flow turbine 10; Third level radial-inward-flow turbine 10 by the road 11, heat exchanger 12, pipeline 13 interlink with fourth stage radial-inward-flow turbine 14.Be provided with valve 26 before the first order radial-inward-flow turbine 2. Heat exchanger 4,8,12 is connected with extraneous thermal source through pipeline 20,22,24.
During operation; After valve 26 gets into the acting of expanding in the first order radial-inward-flow turbine 2, the temperature of turbine outlet reduces pressurized gas by extraneous thermal source heating, gets into the temperature that makes gas in the heat exchanger 4 then and raises; Import the acting of expanding in the second level radial-inward-flow turbine 6; The gas of second level radial-inward-flow turbine 6 outlets imports in the heat exchanger 8 again and heats, and the gas after the heating expands in getting into third level radial-inward-flow turbine 10 and does work, and the gas that expands after doing work through the third level imports heating in the heat exchanger 12; Import the acting of expanding in the fourth stage radial-inward-flow turbine 14 at last, enter then (or getting into next flow process) in the atmosphere.Shaft work on the axle 17,15 passes to main output shaft 16 through speed-changing gear box 18 and drives generator 19 rotations.The size of output shaft work can be controlled through the flow that valve 26 is regulated pressurized gas, also can be through regulating the heat exchange quantity of heat exchanger 4,8,12.
Fig. 2 is the utility model embodiment 2 a structural representation, and it is three grades of radial-inward-flow turbine systems, and its agent structure is identical with embodiment 1, has increased a three-channel valve 27 among the figure.This system comprises radial-inward- flow turbine 2,6,31,32, heat exchanger 4,8, speed-changing gear box 18, generator 19, regulating valve 26, triple channel valve 27, axle 15,16,17, pipeline 1,3,5,7,20,21,22,23,28,29,30.
Second level radial-inward-flow turbine 6 by the road 7, heat exchanger 8, pipeline 9 interlink with three-channel valve 27 inlets; Three-channel valve 27 2 outlets interlink with radial-inward-flow turbine 31, radial-inward-flow turbine 32 respectively; The third level is made up of two radial-inward- flow turbines 31,32, the logical respectively atmosphere (or getting into next flow process) of the outlet B of radial-inward-flow turbine 31, radial-inward-flow turbine 32, C.
During operation; First order radial-inward-flow turbine is identical with embodiment 1 with second level radial-inward-flow turbine; Difference is: the third level is made up of two radial-inward- flow turbines 31,32, and the pressurized gas of second level radial-inward-flow turbine 6 outlets are divided into impartial two-part by triple channel valve 27 after heat exchanger 8 heating; A part enters atmosphere (or getting into next flow process) after getting into the acting of expanding in the radial-inward-flow turbine 31; Another part enters atmosphere (or getting into next flow process) after getting into the acting of expanding in the radial-inward-flow turbine 32, in this way, makes the axial force of two radial-inward-flow turbines, 31,32 rotors of the third level offset.Shaft work on the axle 17,15 passes to main output shaft 16 through speed-changing gear box 18 and drives generator 19 rotations.The size of main output shaft merit can be controlled through the flow that valve 26 is regulated pressurized gas, also can be through regulating the heat exchange quantity of heat exchanger 4,8.
Fig. 3 is the utility model embodiment 3 a structural representation, and it is a Pyatyi radial-inward-flow turbine system, and the structural type of its preceding level Four is identical with embodiment 1; Just increase a heat exchanger 34, three-channel valve 27 and radial-inward- flow turbine 41,42. these systems and comprised radial-inward- flow turbine 2,6,10,14,31,32; Heat exchanger 4,8,34, speed-changing gear box 18, generator 19; Regulating valve 26; Triple channel valve 27, axle 15,16,17,40, pipeline 1,3,5,7,9,11,13,20,21,22,23,24,25,33,35,36,37,38,39.
Fourth stage radial-inward-flow turbine 14 by the road 33, heat exchanger 34, pipeline 35 interlink with three-channel valve 27 inlets; Three-channel valve 27 2 outlets interlink with radial-inward-flow turbine 31, radial-inward-flow turbine 32 respectively; Level V is made up of two radial-inward- flow turbines 41,42, the logical respectively atmosphere (or getting into next flow process) of the outlet B of radial-inward-flow turbine 41, radial-inward-flow turbine 42, C.
During operation; First order radial-inward-flow turbine is identical with embodiment 1 to fourth stage radial-inward-flow turbine; Difference is: level V is made up of two radial-inward- flow turbines 41,42, and the pressurized gas of fourth stage radial-inward-flow turbine 14 outlets are divided into impartial two-part by triple channel valve 27 after heat exchanger 34 heating; A part enters atmosphere (or getting into next flow process) after getting into the acting of expanding in the radial-inward-flow turbine 41; Another part enters atmosphere (or getting into next flow process) after getting into the acting of expanding in the radial-inward-flow turbine 42, in this way, makes the axial force of two radial-inward-flow turbines, 41,42 rotors of level V offset.Shaft work on the axle 17,15,40 passes to main output shaft 16 through speed-changing gear box 18 and drives generator 19 rotations.The size of main output shaft merit can be controlled through the flow that valve 26 is regulated pressurized gas, also can be through regulating the heat exchange quantity of heat exchanger 4,8,12,34
Fig. 4 is the utility model embodiment 4 a structural representation; It is seven grades of radial-inward-flow turbine systems; Comprise radial-inward- flow turbine 2,6,10,14,43,44,45,46, heat exchanger 4,8,12,49,52,63, speed-changing gear box 18; Generator 19; Regulating valve 26, triple channel valve 27, axle 15,16,17,40,58, pipeline 1,3,5,7,9,11,13,20,21,22,23,24,25,47,48,59,60,50,51,53,54,55,56,57,61,62,64.
First order radial-inward-flow turbine 2 is affixed back-to-back through axle 17 with second level radial-inward-flow turbine 6; Third level radial-inward-flow turbine 10 is affixed back-to-back through axle 15 with fourth stage radial-inward-flow turbine 14; Level V radial-inward-flow turbine 44 and the 6th grade of radial-inward-flow turbine 43 are affixed back-to-back through axle 40; Form by two radial-inward-flow turbines 45,46 for the 7th grade, affixed back-to-back through axle 58.Axle 15,17,40,58 connects with main shaft 16 through speed-changing gear box 18, and main shaft 16 is affixed with generator 19 rotating shafts.First order radial-inward-flow turbine 2 by the road 3, heat exchanger 4, pipeline 5 interlink with second level radial-inward-flow turbine 6; Second level radial-inward-flow turbine 6 by the road 7, heat exchanger 8, pipeline 9 interlink with third level radial-inward-flow turbine 10; Third level radial-inward-flow turbine 10 by the road 11, heat exchanger 12, pipeline 13 interlink with fourth stage radial-inward-flow turbine 14; Fourth stage radial-inward-flow turbine 14 by the road 64, heat exchanger 63, pipeline 47 and level V radial-inward-flow turbine 44 communications and liaison mutually; Level V radial-inward-flow turbine 44 by the road 48, heat exchanger 49, pipeline 50 and level V radial-inward-flow turbine 43 communications and liaison mutually; The 6th grade of radial-inward-flow turbine 43 by the road 51, heat exchanger 52, pipeline 53 interlink with three-channel valve 27 inlets; Three-channel valve 27 2 outlets interlink with radial-inward-flow turbine 45, radial-inward-flow turbine 46 respectively; Form the logical respectively atmosphere (or getting into next flow process) of the outlet B of radial-inward-flow turbine 45, radial-inward-flow turbine 46, C for the 7th grade by two radial-inward-flow turbines 45,46.Be provided with valve 26 before the first order radial-inward-flow turbine 2.Heat exchanger 4,8,12,49,52,63 is connected with extraneous thermal source through pipeline 20,22,24,59,56,61.
During operation, after valve 26 gets into the acting of expanding in the first order radial-inward-flow turbine 2, the temperature of turbine outlet reduces pressurized gas by extraneous thermal source heating; Getting into the temperature that makes gas in the heat exchanger 4 then raises; Import the acting of expanding in the second level radial-inward-flow turbine 6, the gas that second level radial-inward-flow turbine 6 exports imports heating in the heat exchanger 8, and the gas after the heating expands in getting into third level radial-inward-flow turbine 10 and does work; The gas that expands after doing work through the third level imports heating in the heat exchanger 12; Import the acting of expanding in the fourth stage radial-inward-flow turbine 14, the gas that fourth stage radial-inward-flow turbine 14 exports imports heating in the heat exchanger 63, and the gas after the heating expands in getting into level V radial-inward-flow turbine 44 and does work; The gas of level V radial-inward-flow turbine 44 outlets imports heating in the heat exchanger 49; Gas after the heating expands in getting into the 6th grade of radial-inward-flow turbine 43 and does work, and the pressurized gas of the 6th grade of radial-inward-flow turbine 43 outlets are divided into impartial two-part by triple channel valve 27 after heat exchanger 52 heating; A part enters atmosphere (or getting into next flow process) after getting into the acting of expanding in the radial-inward-flow turbine 45; Another part enters atmosphere (or getting into next flow process) after getting into the acting of expanding in the radial-inward-flow turbine 46, in this way, makes the 7th grade the axial force of two radial-inward-flow turbines, 45,46 rotors offset.Shaft work on the axle 17,15,40,58 passes to main output shaft 16 through speed-changing gear box 18 and drives generator 19 rotations.The size of main output shaft merit can be controlled through the flow that valve 26 is regulated pressurized gas, also can be through regulating the heat exchange quantity of heat exchanger 4,8,12,49,52,63.
Claims (13)
1. a back-to-back multistage radial-inward-flow turbine system comprises radial-inward-flow turbine group, heat exchanger, generator, speed-changing gear box, valve, many axles and many pipelines; It is characterized in that:
The radial-inward-flow turbine group comprises multistage radial-inward-flow turbine, and progression is 2～8 grades, and what of progression are by the size decision of the expansion ratio of the required completion of energy conversion system;
Be at least the two-stage radial-inward-flow turbine, every grade comprises at least one radial-inward-flow turbine, and two radial-inward-flow turbine corotation moving axis are affixed back-to-back; Radial-inward-flow turbines at different levels interlink through many pipelines, at least one heat exchanger;
Be provided with modulating valve (26), three-way valve (27) in the pipeline;
Multistage rotatingshaft is connected with speed-changing gear box (18) respectively, and the main output shaft (16) of speed-changing gear box (18) is connected with the live axle of generator (19) or other loads;
The thermal source of heat exchanger is for coming from environment or middle-low temperature heat or solar thermal collector.
2. multistage radial-inward-flow turbine according to claim 1 system, it is characterized in that: said two radial-inward-flow turbine corotation moving axis are affixed back-to-back, are adjacent two-stage radial-inward-flow turbine series connection; Totally one rotatingshaft; Affixed with back-to-back mode, promptly totally one rotatingshaft (17) is affixed back-to-back for first order radial-inward-flow turbine (2), second level radial-inward-flow turbine (6), and third level radial-inward-flow turbine (10), fourth stage radial-inward-flow turbine (14) totally one rotatingshaft (15) are affixed back-to-back; By that analogy to afterbody; When progression was odd number, afterbody was made up of two radial-inward-flow turbines, adopted coaxial back-to-back arranged in form;
The position of speed-changing gear box (18) is positioned at the homonymy of two coaxial radial-inward-flow turbines;
First order radial-inward-flow turbine (2) (3), heat exchanger (4), pipeline (5) by the road interlinks with second level radial-inward-flow turbine (6); Second level radial-inward-flow turbine (6) (7), heat exchanger (8), pipeline (9) by the road interlinks with third level radial-inward-flow turbine (10); Third level radial-inward-flow turbine (10) (11), heat exchanger (12), pipeline (13) by the road interlinks with fourth stage radial-inward-flow turbine (14), and by that analogy to afterbody (N), atmosphere is led in the outlet of afterbody (N) radial-inward-flow turbine.
3. multistage radial-inward-flow turbine according to claim 1 and 2 system, it is characterized in that: the rotor of said radial-inward-flow turbine is open type, semi-open type or enclosed.
4. multistage radial-inward-flow turbine according to claim 1 system is characterized in that: the pressurized gas in this multistage radial-inward-flow turbine system, for air, nitrogen, oxygen, carbon dioxide, rock gas, freon or water vapour one of them.
5. multistage radial-inward-flow turbine according to claim 1 system; It is characterized in that: the radial-inward-flow turbine number of said multistage radial-inward-flow turbine system is an even number; Adopt coaxial back-to-back arranged in form, to offset the axial force of turbo wheel, the shaft work of generation is exported by same output shaft.
6. multistage radial-inward-flow turbine according to claim 1 system; It is characterized in that: the pressurized gas in this multistage radial-inward-flow turbine system were heated to uniform temperature before getting into multistage radial-inward-flow turbine; The temperature that makes first order radial-inward-flow turbine (2) import is between 220K～973K, and inlet pressure is between 3bar～340bar; The expansion ratio of multistage radial-inward-flow turbine is between 3～340, and the exhaust pressure of afterbody (N) radial-inward-flow turbine is near normal pressure, or uses as the high-pressure air source of other equipment.
7. multistage radial-inward-flow turbine according to claim 6 system; It is characterized in that: the expansion ratio of said radial-inward-flow turbines at different levels; Determine jointly that by the total expansion ratio of multistage radial-inward-flow turbine and the axial force of radial-inward-flow turbine rotors at different levels the pressure ratio of back-to-back two radial-inward-flow turbines distributes will satisfy roughly balance of axial force.
8. multistage radial-inward-flow turbine according to claim 1 and 2 system; It is characterized in that: said heat exchanger; Be bushing type, shell of pipe type, jacketed type, heat accumulating type, hybrid, the combination of immersing coil pipe type one of them or they, the heat source temperature of heat exchanger is between 220K～973K.
9. multistage radial-inward-flow turbine according to claim 1 system, it is characterized in that: said thermal source is industrial waste heat, waste heat, atmosphere environment or heat-stored device for coming from environment or middle-low temperature heat.
10. according to claim 2 or 6 described multistage radial-inward-flow turbine systems, it is characterized in that: when the exit flow of said afterbody (N) radial-inward-flow turbine uses as low-temperature receiver, through the temperature of the inlet temperature of regulating the final stage turbine and the control outlet recently of expanding.
11. multistage radial-inward-flow turbine according to claim 1 and 2 system is characterized in that: the size of the shaft work of said main output shaft (16) output, through pressurized gas inlet flow rate and temperature, or control through the temperature and the flow of heat exchanger.
12. multistage radial-inward-flow turbine according to claim 1 and 2 system is characterized in that: said three-way valve (27), in three grades of radial-inward-flow turbine systems; Comprise radial-inward-flow turbine group (2,6,31,32), heat exchanger (4,8), speed-changing gear box (18); Generator (19); Modulating valve (26), rotatingshaft (15,16,17), pipeline (1,3,5,7,20,21,22,23,28,29,30);
Second level radial-inward-flow turbine (6) (7), heat exchanger (8), pipeline (29) by the road interlinks with three-way valve (27) inlet; Three-way valve (27) two outlets interlink with two radial-inward-flow turbines (31,32) respectively; The third level comprises two radial-inward-flow turbines (31,32), the logical respectively atmosphere of the outlet B of radial-inward-flow turbine (31,32), C or use as the source of the gas of other equipment.
13. multistage radial-inward-flow turbine according to claim 12 system; It is characterized in that: when the progression of multistage radial-inward-flow turbine system is 5 or 7; Its afterbody adopts two radial-inward-flow turbines; The pressurized gas of its upper reaches radial-inward-flow turbine outlet are after the heat exchanger heating, and hot air flow is through two radial-inward-flow turbines of the impartial input of three-way valve (27).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220059417 CN202500618U (en) | 2012-02-21 | 2012-02-21 | Back-to-back multistage centripetal turbine system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220059417 CN202500618U (en) | 2012-02-21 | 2012-02-21 | Back-to-back multistage centripetal turbine system |
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| Publication Number | Publication Date |
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| CN202500618U true CN202500618U (en) | 2012-10-24 |
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| CN 201220059417 Expired - Lifetime CN202500618U (en) | 2012-02-21 | 2012-02-21 | Back-to-back multistage centripetal turbine system |
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| Country | Link |
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| CN (1) | CN202500618U (en) |
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2012
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