CN206801617U - A kind of reheat-type multistage axial turbine - Google Patents
A kind of reheat-type multistage axial turbine Download PDFInfo
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- CN206801617U CN206801617U CN201720593652.XU CN201720593652U CN206801617U CN 206801617 U CN206801617 U CN 206801617U CN 201720593652 U CN201720593652 U CN 201720593652U CN 206801617 U CN206801617 U CN 206801617U
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Abstract
The utility model discloses a kind of reheat-type multistage axial turbine,The lower end of movable vane is connected with wheel hub,The upper end of stator blade is connected with casing,The lower end of stator blade is flexibly connected with wheel hub,Casing is provided with the ring-like chamber of some hot fluid inlets and the ring-like chamber of some hot fluid outlet ports,Hot flow path in hot flow path and some second is offered in some first in casing,Hot flow path in the 3rd is provided with stator blade,The corresponding ring-like chamber of hot fluid inlet of one stator blade,One ring-like chamber of hot fluid outlet ports,Hot flow path in hot flow path and one second in one first,The hot fluid medium outlet of the ring-like chamber of hot fluid inlet is successively through corresponding to hot flow path in first,Correspondingly hot flow path is connected with the hot fluid medium entrance of the ring-like chamber of corresponding hot fluid outlet ports in hot flow path and corresponding second in the 3rd in stator blade,The thermal efficiency of the turbine is higher,And it can effectively avoid the pressure loss of main flow medium.
Description
Technical field
It the utility model is related to a kind of multistage axial turbine, and in particular to a kind of reheat-type multistage axial turbine.
Background technology
Turbine widely uses in energy industry, and it is Brayton Cycle system, Rankine cycle system and above two
Gaseous state or supercritical fluid interior energy are converted into the important rotating machinery of shaft work in the combined system of system.Using
In multistage axial turbine, during gaseous state or supercritical fluid acting, the temperature of fluid can be reduced accordingly, and the drop of temperature
The low interior energy grade for causing fluid to do work reduces.If can realize, fluid decalescence and does work at high temperature dot, at low temperature point
Isothermal heat release, then the efficiency of the circulatory system can be made to be more nearly the ideal cycle efficiency of system.At present, in order to improve the circulatory system
Efficiency, researcher propose thermal technology again, are：Fluid is drawn from the outlet of high pressure cylinder turbine and heated, after heating
Fluid is delivered to the import of intermediate pressure cylinder turbine again, fluid promotes intermediate pressure cylinder turbine to do work again, and the method can imitate system circulation
Rate lifting more than 1%.Space needed for the thermal technology again of the existing circulatory system is larger, complicated, so being applicable only to large-scale
Between the high pressure cylinder and low pressure (LP) cylinder of Steam Turbine.Above-mentioned technology, though the thermal efficiency of electricity generation system can be improved to a certain extent,
But it cannot be used for improving the thermal efficiency of high pressure cylinder turbine, and can also necessarily bring when mainstream fluid flows through reheating passage certain
Pressure loss, the scope of application are very narrow.
Utility model content
The shortcomings that the purpose of this utility model is to overcome above-mentioned prior art, there is provided a kind of reheat-type multistage axial flow is saturating
Flat, the thermal efficiency of the multistage axial turbine is higher, and can effectively avoid the pressure loss of main flow medium.
To reach above-mentioned purpose, reheat-type multistage axial turbine described in the utility model includes casing, wheel hub, Ruo Gandong
Leaf and some stator blades, the direction that each movable vane circulates with each stator blade along main flow working medium are interspersed successively, and the lower end of movable vane and wheel
Hub is connected, and the upper end of stator blade is connected with casing, and the lower end of stator blade is flexibly connected with wheel hub, and casing is provided with some hot fluids
The ring-like chamber of import and the ring-like chamber of some hot fluid outlet ports, hot-fluid in hot flow path and some second is offered in some first in casing
Road, stator blade is interior to be provided with hot flow path in the 3rd, the ring-like chamber of the corresponding hot fluid inlet of a stator blade, a hot fluid outlet ports ring
Die cavity, hot flow path in hot flow path and one second in one first, the hot fluid medium outlet of the ring-like chamber of hot fluid inlet is successively
Through corresponding to hot flow path in the 3rd in hot flow path in first, corresponding stator blade and corresponding to hot flow path and corresponding hot fluid outlet ports in second
The hot fluid medium entrance of ring-like chamber is connected.
The side of wheel hub is provided with some annular grooves, wherein, the corresponding stator blade of annular groove, in the lower end of stator blade
In corresponding annular groove.
The cross section of hot flow path is square, trapezoidal, polygon, circle or ellipse in first；
The cross section of hot flow path is square, trapezoidal, polygon, circle or ellipse in second；
The cross section of hot flow path is square, trapezoidal, polygon, circle or ellipse in 3rd.
Hot flow path is straight passage structures, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impact chamber in first
Cell structure or impingement sleeve structure；
Hot flow path is straight passage structures, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impact chamber in second
Cell structure or impingement sleeve structure；
Hot flow path is straight passage structures, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impact chamber in 3rd
Cell structure or impingement sleeve structure.
The direction circulated along main flow working medium, the size of each stator blade gradually increase.
The direction circulated along main flow working medium, the size of each movable vane gradually increase.
The utility model has the advantages that：
Reheat-type multistage axial turbine described in the utility model offers in some first in concrete operations in casing
Hot flow path in hot flow path and some second, stator blade is interior to be provided with hot flow path in the 3rd, the hot-fluid of the ring-like chamber output of hot fluid inlet
Through corresponding to, hot flow path enters body medium in hot flow path and corresponding second in the 3rd in hot flow path in first, corresponding stator blade successively
In the corresponding ring-like chamber of hot fluid outlet ports, realize the heating to stator blade and casing, main flow medium when flowing through, by with stator blade and machine
Casket is exchanged heat, and completes the heating to main flow medium, improves the temperature of turbine entrance main flow media at different levels, so as to effectively carry
The thermal efficiency of high multistage axial turbine, avoid tradition again thermal technology can only improve high pressure cylinder steam turbine and and low pressure (LP) cylinder steam turbine it
Between working media temperature and low pressure (LP) cylinder steam turbine acting fluid inlet temperature the shortcomings that.In addition, it is necessary to explanation, this reality
With it is new do not need separate space place heat structure, main flow medium need not enter the independent passage of heat again, not add again
The pressure loss, the scope of application are more wide.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is fundamental diagram of the present utility model.
Wherein, 1 it is movable vane, 2 be wheel hub, 3 be stator blade, 4 be the ring-like chamber of hot fluid outlet ports, 5 be casing, 6 is hot in the 3rd
Runner, 7 be the ring-like chamber of hot fluid inlet, 8 be hot flow path in first, 9 be hot flow path in second.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, reheat-type multistage axial turbine described in the utility model include casing 5, wheel hub 2, some movable vanes 1 and
Some stator blades 3, each movable vane 1 is interspersed successively with each stator blade 3 along the direction that main flow working medium circulates, and the lower end of movable vane 1 and wheel
Hub 2 is connected, and the upper end of stator blade 3 is connected with casing 5, and the lower end of stator blade 3 is flexibly connected with wheel hub 2, and casing 5 is provided with some
The ring-like chamber 7 of hot fluid inlet and the ring-like chamber 4 of some hot fluid outlet ports, hot flow path 8 and some is offered in some first in casing 5
Hot flow path 9 in second, are provided with hot flow path 6 in the 3rd in stator blade 3, the ring-like chamber 7 of the corresponding hot fluid inlet of a stator blade 3,
Hot flow path 9, the ring-like chamber 7 of hot fluid inlet in hot flow path 8 and one second in 4, one first, the ring-like chamber of one hot fluid outlet ports
Hot fluid medium outlet successively through hot flow path 6 and corresponding second in the 3rd in hot flow path 8, corresponding stator blade 3 in corresponding first
The hot fluid medium entrance of the interior chamber 4 ring-like with corresponding hot fluid outlet ports of hot flow path 9 is connected.
The side of wheel hub 2 is provided with some annular grooves, wherein, the corresponding stator blade 3 of annular groove, under stator blade 3
End is embedded in corresponding annular groove；The cross section of hot flow path 8 is square, trapezoidal, polygon, circle or ellipse in first；
The cross section of hot flow path 9 is square, trapezoidal, polygon, circle or ellipse in second；The cross section of hot flow path 6 is in 3rd
Square, trapezoidal, polygon, circle or ellipse.Hot flow path 8 is straight passage structures, channel design of turning back, sudden expansion knot in first
Structure, sudden contraction structure, rib structure, impulse chamber structure or impingement sleeve structure；Hot flow path 9 is straight passage structures, turned back in second
Channel design, sudden expansion structure, sudden contraction structure, rib structure, impulse chamber structure or impingement sleeve structure；Hot flow path 6 is in 3rd
Straight passage structures, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impulse chamber structure or impingement sleeve structure.
The direction circulated along main flow working medium, the size of each stator blade 3 gradually increase；The direction circulated along main flow working medium, it is each dynamic
The size of leaf 1 gradually increases.
The utility model specific operation process is：
The hot fluid medium that the ring-like chamber 7 of hot fluid inlet exports is successively through corresponding in hot flow path 8 in first, corresponding stator blade 3
The 3rd in hot flow path 6 and corresponding second hot flow path 9 enter in the ring-like chamber 4 of corresponding hot fluid outlet ports, realize to stator blade 3 and
The heating of casing 5, main flow medium flow through the passage between wheel hub 2 and casing 5, wherein, main flow medium does work to movable vane 1, makes master
The temperature and pressure of flow medium decline, and main flow medium is exchanged heat with stator blade 3 and casing 5, make the temperature of main flow medium high.
The utility model makes the inner wall surface of casing 5, the surface of stator blade 3 and main flow be situated between by the heating to stator blade 3 and casing 5
The temperature of matter contact surface realizes the heat exchange to main flow medium apparently higher than the temperature of main flow medium, the heat of hot fluid medium with
Heat transfer, heat convection, the mode of heat radiation are transmitted to stator blade 3 and casing 5, and so as to improve the temperature of main flow medium, main flow is situated between
Matter often flows then reduces the temperature of main flow medium and pressure the movable vane 1 acting by a row movable vane 1, main flow medium, and main flow is situated between
Matter often passes through a row stator blade 3, and the mode that can be transferred through heat exchange improves the temperature parameter of main flow medium.To next stage turbine blade
For, in the case where mass flow is constant, the inlet temperature of this grade of turbine can be improved；For multistage axial turbine,
Every grade of stator blade 3 all uses above-mentioned reheating scheme, then can greatly improve the acting ability of multistage turbine, improves turbine and circulation
The efficiency of system.
The utility model does not influence and limited the flowing of main flow medium, it is not necessary to additional space, available for single shaft or more
The reheat-type multistage axial turbine of axle, single cylinder or multi-cylinder, ground supercritical carbon dioxide Brayton cycle can be applied to and generated electricity
The equipment such as system, industrial turbine.
The technical solution of the utility model is not limited to the limitation of above-mentioned specific embodiment, every according to skill of the present utility model
The technology deformation that art scheme is made, each falls within the scope of protection of the utility model.
Claims (6)
1. a kind of reheat-type multistage axial turbine, it is characterised in that including casing (5), wheel hub (2), some movable vanes (1) and some
Stator blade (3), each movable vane (1) is interspersed successively with each stator blade (3) along the direction that main flow working medium circulates, and the lower end of movable vane (1)
It is connected with wheel hub (2), the upper end of stator blade (3) is connected with casing (5), and the lower end of stator blade (3) is flexibly connected with wheel hub (2),
Casing (5) is provided with the ring-like chamber of some hot fluid inlets (7) and the ring-like chamber of some hot fluid outlet ports (4), is offered in casing (5)
Hot flow path (9) in hot flow path (8) and some second in some first, stator blade (3) is interior to be provided with hot flow path (6) in the 3rd, and one quiet
The corresponding ring-like chamber of hot fluid inlet (7) of leaf (3), a ring-like chamber of hot fluid outlet ports (4), hot flow path (8) in one first
And hot flow path (9) in one second, the hot fluid medium outlet of the ring-like chamber of hot fluid inlet (7) is successively through corresponding to hot-fluid in first
In road (8), corresponding stator blade (3) the 3rd in hot flow path (6) and corresponding second hot flow path (9) and corresponding hot fluid outlet ports it is ring-like
The hot fluid medium entrance of chamber (4) is connected.
2. the reheat-type multistage axial turbine according to right can require 1, it is characterised in that wheel hub (2) if side be provided with
Dry annular groove, wherein, the corresponding stator blade (3) of an annular groove, the lower end of stator blade (3) is embedded in corresponding annular groove
It is interior.
3. the reheat-type multistage axial turbine according to right can require 1, it is characterised in that the horizontal stroke of hot flow path (8) in first
Section is square, trapezoidal, polygon, circle or ellipse；
The cross section of hot flow path (9) is square, trapezoidal, polygon, circle or ellipse in second；
The cross section of hot flow path (6) is square, trapezoidal, polygon, circle or ellipse in 3rd.
4. the reheat-type multistage axial turbine according to right can require 1, it is characterised in that hot flow path (8) is straight in first
Channel design, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impulse chamber structure or impingement sleeve structure；
Hot flow path (9) is straight passage structures, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impact chamber in second
Cell structure or impingement sleeve structure；
Hot flow path (6) is straight passage structures, channel design of turning back, sudden expansion structure, sudden contraction structure, rib structure, impact chamber in 3rd
Cell structure or impingement sleeve structure.
5. the reheat-type multistage axial turbine according to right can require 1, it is characterised in that the side circulated along main flow working medium
To the size of each stator blade (3) gradually increases.
6. the reheat-type multistage axial turbine according to right can require 1, it is characterised in that the side circulated along main flow working medium
To the size of each movable vane (1) gradually increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720593652.XU CN206801617U (en) | 2017-05-25 | 2017-05-25 | A kind of reheat-type multistage axial turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720593652.XU CN206801617U (en) | 2017-05-25 | 2017-05-25 | A kind of reheat-type multistage axial turbine |
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| CN206801617U true CN206801617U (en) | 2017-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023317A (en) * | 2017-05-25 | 2017-08-08 | 华能国际电力股份有限公司 | A kind of reheat-type multistage axial turbine and its method of work |
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2017
- 2017-05-25 CN CN201720593652.XU patent/CN206801617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023317A (en) * | 2017-05-25 | 2017-08-08 | 华能国际电力股份有限公司 | A kind of reheat-type multistage axial turbine and its method of work |
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