CN207945019U - It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl - Google Patents
It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl Download PDFInfo
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- CN207945019U CN207945019U CN201820042280.6U CN201820042280U CN207945019U CN 207945019 U CN207945019 U CN 207945019U CN 201820042280 U CN201820042280 U CN 201820042280U CN 207945019 U CN207945019 U CN 207945019U
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- receiving orifice
- chamber
- receiving
- cover board
- prewhirl
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Abstract
The utility model provide it is a kind of receiving pore structure for the multiple rows of of cooling system that prewhirl, including be sequentially communicated inlet chamber, preswirl nozzle, turn quiet disk chamber, corotation chamber, air vent；At least 2 row's receiving orifices are opened up on the cover board of described turn of quiet disk chamber, air-flow flows into corotation chamber from quiet disk chamber is turned by receiving orifice, often row's receiving orifice is circumferentially disposed on cover board, the radial position of the central point of same row's receiving orifice import on the cover board is identical, and it is different that difference arranges the radial position of the central point of receiving orifice import on the cover board.The utility model is compared to traditional single straight-through receiving orifice of axial direction, the air inlet area of receiving orifice can be increased, enable more air-flows swimmingly from the receiving orifice for turning quiet disk chamber inflow rotation and then is transported to corotation chamber, reduce the flow losses inside receiving orifice, obtain higher receiving orifice discharge coefficient, and power consumption is reduced, be conducive to and the promotion for system temperature drop performance of prewhirling.
Description
Technical field
The utility model is related to gas turbine (containing ground gas turbine and aero-engine) secondary ventilation system prewhirl it is cold
But field, and in particular to a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl.
Background technology
The features such as gas turbine is efficient since it is with small, fast response time, and power is big, is answered extensively at present
For aerospace, ship, power plants generating electricity and other various industrial circles.It is to promote combustion to improve Gas Turbine inlet temperature
One of key technology of gas turbine performance.Increasing fuel gas temperature makes the work of the high-temperature component of gas turbine power plant
Environment severe exacerbation.Efficient cooling technology can extend the service life of heating part, using more economical material to reduce
Cost can also effectively reduce cooling air volume, reduce engine power loss to improve the thermal efficiency and thrust-weight ratio of engine.
Cooling system prewhirl as gas turbine air system important component, function is to guide cold air at rotation
State is transported in the cooling duct of the high-temperature components such as high-speed rotation turbo blade, achievees the purpose that reduce air-flow with respect to total temperature,
To improve cold air quality, enhance blade cooling effect, improves cooling efficiency, the normal table of gas turbine is maintained to work, into
And improve the overall performance of gas turbine.The system of prewhirling of function admirable can make cold air temperature reduce 100K or so, can be very big
Ground increases the safety in operation of aero-engine, extends the working life of engine, thus is widely used in gas turbine and sets
Among meter.
The cover-plate type system of prewhirling includes inlet chamber, preswirl nozzle, turn-quiet chamber, receiving orifice, corotation chamber, air vent.It improves pre-
One of the approach of rotation system performance is to increase the pressure increment of rotor portion.
Receiving orifice is the critical elements for influencing rotor pressure in the system of prewhirling and increasing.The major function of receiving orifice is to receive
The quiet chamber of rotation-passes through the air-flow prewhirled and is transported in high-speed rotating corotation chamber, and traditional receiving orifice is mostly single axial direction
Clear opening.For the single straight-through receiving orifice of conventional axial, air-flow from turn-quiet chamber enter corotation chamber when, it is straight that there are fractions
It connects impact and receives wall surface of the hole, fluid is forced to turn to, and the swirl ratio of near exit also decreases, thus air-flow is inside receiving orifice
Flow losses are larger, and discharge coefficient is relatively low, also result in the reduction of downstream blade air vent discharge coefficient, this makes the system of prewhirling
Temperature drop characteristic is deteriorated, and power consumption increases, and is unfavorable for the raising of dimensionless temperature drop.
Utility model content
In order to avoid the shortcomings of the prior art, the restriction of existing receiving orifice inlet area, the present invention is overcome to propose one
Kind receives pore structure for the multiple rows of of cooling system of prewhirling, which is on the cover board that the system of prewhirling turns quiet disk chamber
Add multiple rows of receiving orifice.
To achieve the above object, the utility model adopts the following technical solution：
It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl, including be sequentially communicated inlet chamber, preswirl nozzle, turn
Quiet disk chamber, corotation chamber, air vent；At least 2 row's receiving orifices are opened up on the cover board of described turn of quiet disk chamber, air-flow passes through from quiet disk chamber is turned
Receiving orifice flows into corotation chamber, and it is circumferentially disposed on cover board often to arrange receiving orifice, the center of same row's receiving orifice airflow inlet
The radial position of point on the cover board is identical, and it is different that difference arranges the radial position of the central point of receiving orifice airflow inlet on the cover board.
Further, the receiving orifice is 2 rows, receiving orifice at receiving orifice and low radius at respectively high radius.
Further, the number of the often row receiving orifice is 24.
Further, the often row receiving orifice arrangement mode is in-line arrangement.
Further, the center line of the receiving orifice is parallel with system axial of prewhirling.
Further, the receiving orifice is using straight-through cylindrical type receiving orifice.
Advantageous effect：A kind of the multiple rows of of cooling system that be used to prewhirl proposed by the present invention receives pore structure, compared to tradition
The single straight-through receiving orifice of axial direction, the air inlet area of receiving orifice can be increased so that more air-flows can be swimmingly from turning a quiet disk chamber
It flows into the receiving orifice of rotation and then is transported to corotation chamber, reduce the flow losses inside receiving orifice, obtain higher receiving orifice stream
Coefficient of discharge, and reduce power consumption, is conducive to and the promotion for system temperature drop performance of prewhirling.When the receiving orifice gross area, receive orifice angle phase
With and inlet flow rate it is identical when, for multiple rows of receiving orifice compared to single row of nozzles, the system temperature drop of prewhirling wants slightly higher air vent total flow to increase
Greatly, the nusselt number of the low radial location of disc surfaces significantly increases, and temperature significantly reduces.Multiple rows of pore structure that receives can also subtract simultaneously
The weight of light Gas Turbine disk is conducive to the thrust-weight ratio for improving gas turbine.
Description of the drawings
Fig. 1 is double to receive micro pore structure schematic diagram.
Fig. 2 is system flow path schematic diagram of prewhirling.
Fig. 3 is double to receive micro pore structure vertical view.
Fig. 4 is double to receive micro pore structure sectional view.
Figure label：1. inlet chamber；2. preswirl nozzle；3. turn quiet disk chamber；4. receiving orifice at high radius；5. corotation chamber；6.
Air vent；7. cover board；8. receiving orifice at low radius.
Specific implementation mode
The utility model is further described below in conjunction with the accompanying drawings.
2 row's receiving orifices are arranged in the present embodiment on the cover board 7 that the system of prewhirling turns quiet disk chamber 3, receive at respectively high radius
Receiving orifice 8 at hole 4, low radius.
Turn in quiet disk chamber 3 as shown in Fig. 2, the cooling medium in inlet chamber 1 enters by preswirl nozzle 2, then passes through height
Receiving orifice 8 is transported in corotation chamber 5 at receiving orifice 4 and low radius at radius, is finally prewhirled system from the outflow of air vent 6.
As shown in Fig. 1,3,4,2 row's receiving orifices are opened up on the cover board 7 that the system of prewhirling turns quiet disk chamber 3, often arrange receiving orifice edge
Uniform circular is arranged on turntable, and air-flow flows into corotation chamber 5 from quiet disk chamber 3 is turned by 2 row's receiving orifices.Receive in 2 rows
In pore structure, the radial position of the central point of same row's receiving orifice import on cover board 7 is identical, in difference row's receiving orifice imports
Radial position of the heart point on cover board 7 is different.
Preferably, the receiving orifice arrangement mode is in-line arrangement.
It is preferably, described that receive centerline hole parallel with system axial of prewhirling.
Preferably, often the number of row's receiving orifice is 24.
Preferably, the receiving orifice is using straight-through cylindrical type receiving orifice.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of receiving pore structure for the multiple rows of of cooling system that prewhirl, which is characterized in that including the inlet chamber being sequentially communicated
(1), preswirl nozzle (2), turn quiet disk chamber (3), corotation chamber (5), air vent (6)；It is opened on the cover board (7) of described turn of quiet disk chamber (3)
If at least 2 row's receiving orifices, air-flow flows into corotation chamber (5) from quiet disk chamber (3) is turned by receiving orifice, often arranges receiving orifice along the circumferential direction
It is arranged on cover board (7), the radial position of the central point of same row's receiving orifice airflow inlet on cover board (7) is identical, difference row
Radial position of the central point of receiving orifice airflow inlet on cover board (7) is different.
2. a kind of the multiple rows of of cooling system that be used to prewhirl according to claim 1 receives pore structure, which is characterized in that described
Receiving orifice is 2 rows, receiving orifice (8) at receiving orifice (4) and low radius at respectively high radius.
3. a kind of the multiple rows of of cooling system that be used to prewhirl according to claim 1 receives pore structure, which is characterized in that described
Often the number of row's receiving orifice is 24.
4. a kind of the multiple rows of of cooling system that be used to prewhirl according to claim 1 receives pore structure, which is characterized in that described
Often row's receiving orifice arrangement mode is in-line arrangement.
5. a kind of the multiple rows of of cooling system that be used to prewhirl according to claim 1 receives pore structure, which is characterized in that described
The center line of receiving orifice is parallel with system axial of prewhirling.
6. a kind of the multiple rows of of cooling system that be used to prewhirl according to claim 1 receives pore structure, which is characterized in that described
Receiving orifice is using straight-through cylindrical type receiving orifice.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820042280.6U CN207945019U (en) | 2018-01-11 | 2018-01-11 | It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820042280.6U CN207945019U (en) | 2018-01-11 | 2018-01-11 | It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl |
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| CN207945019U true CN207945019U (en) | 2018-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087123A (en) * | 2018-01-11 | 2018-05-29 | 南京航空航天大学 | It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl |
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2018
- 2018-01-11 CN CN201820042280.6U patent/CN207945019U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087123A (en) * | 2018-01-11 | 2018-05-29 | 南京航空航天大学 | It is a kind of to receive pore structure for the multiple rows of of cooling system that prewhirl |
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