CN201209463Y - Frequency non-modulation moving blade suitable for blast furnace gas energy recovery and turbining - Google Patents
Frequency non-modulation moving blade suitable for blast furnace gas energy recovery and turbining Download PDFInfo
- Publication number
- CN201209463Y CN201209463Y CNU2008200289172U CN200820028917U CN201209463Y CN 201209463 Y CN201209463 Y CN 201209463Y CN U2008200289172 U CNU2008200289172 U CN U2008200289172U CN 200820028917 U CN200820028917 U CN 200820028917U CN 201209463 Y CN201209463 Y CN 201209463Y
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- Prior art keywords
- vane
- blast furnace
- root
- energy recovery
- furnace gas
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Abstract
The utility model discloses a non-FM movable vane applicable to a high blast furnace gas energy recovery turbine, and the non-FM movable vane comprises vane molded lines, a vane root and a vane root trough, wherein the molded lines of the vane are twist shapes; the vane root is a trinary vane root; the vane root is extended to the vane root trough; the vane root trough is provided with two rows of fixing holes; and pins are arranged in the fixing holes. The non-FM movable vane applicable to the high blast furnace gas energy recovery turbine can not exceed permit value of materials even though the length of the movable vane is increased, the diameter of the vane root is increased, and greater centrifugal stress is produced on the molded line part of the vane and the vane root part; the vane can prolong the service life of the vane; the structure is simple; and the non-FM movable vane is safe and reliable.
Description
Technical field
The utility model belongs to a kind of blade of blast furnace gas energy recovery turbine set, particularly a kind of moving vane that is applicable to the untuned of blast furnace gas energy recovery turbine.
Background technique
Blast furnace gas energy recovery turbine is the valuable energy recovery technology of internationally recognized iron and steel enterprise, and blast furnace gas energy recovery turbine is to utilize pressure energy in the top gas and heat energy to do work through turbine expansion to drive generator for electricity generation.So both reclaimed the overbottom pressure waste heat energy of coal gas, and purified coal gas again, having reduced noise is the great energy-conservation project of blast furnace process operation, and economic benefit is very remarkable.Blade is the inner critical component of realizing Conversion of energy of blast furnace gas energy recovery turbine, during the Blade Design of the blast furnace gas energy recovery turbine of extensive use at present in order to guarantee Security, avoid blade to destroy because of producing resonance, adjust the natural frequency of blade, make natural frequency and the possible excited frequency considered between keep certain nargin.Yet, because blast furnace gas medium complexity, the big rise and fall of blast furnace level pressure, the moving vane operating conditions is abominable, and moving vane is when longer, and it is big that the centrifugal stress of blade and vibration stress become, and frequency descends, according to steam turbine frequency modulation and untuned blade criterion, design the proper functioning needs that blast furnace gas energy recovery turbine can not satisfy blade.
Summary of the invention
Defective or deficiency at above-mentioned prior art existence, the purpose of this utility model is, a kind of untuned moving vane that is applicable to blast furnace gas energy recovery turbine is provided, this moving vane does not need to adjust the natural frequency of blade, can guarantee blade and the safe operation of blast furnace gas energy recovery turbine yet.
For realizing above-mentioned task, the utility model is taked following technical solution:
A kind of untuned moving vane that is applicable to blast furnace gas energy recovery turbine, comprise vane type line and blade root and blade root slot, it is characterized in that, the molded lines of described blade is a distorted shape, blade root is the trident blade root, blade root puts in the blade root slot, and two row's fixed holes are arranged on the blade root slot, and pin is installed in the fixed hole.
The untuned moving vane that is applicable to blast furnace gas energy recovery turbine of the present utility model, even because moving vane length increases, the blade root diameter increases, and produce bigger centrifugal stress at molded lines part, the leaf root part of blade, the permitted value that also can not surpass material, this blade can prolong the working life of blade, simple in structure, safe and reliable.
Description of drawings
Fig. 1 has shown the structural representation of moving vane of the present utility model, and wherein (a) is plan view, (b) is the side view of (a);
Fig. 2 has shown the structural representation of pin;
Fig. 3 is the assembly relation schematic representation between blade root and the blade root slot.
The present invention is described in detail below in conjunction with embodiment that accompanying drawing is represented.
Embodiment
Fig. 1 is the structural representation of moving vane of the present utility model; Comprise vane type line and blade root and blade root slot, vane type line is a twisted blade according to numerical value flow field simulation, and gas is by promoting blade, and the acting of expanding drives generator for electricity generation.Leaf root part is the trident blade root, and blade root puts in blade root slot, and two row's fixed holes are arranged on the blade root slot, and pin is installed in the fixed hole.
The CFD of vane type line uses advanced (numerical simulation calculation) Flow Field Calculation and test combine, and design high efficiency vane type line, can improve operating turbine efficient, reduce flow losses.And the solid coupling principle of utilization stream, carry out pneumatic and the structural strength global analysis, reduce the airflow acting force of gas, thereby reduce the vibration stress of blade blade.
Fig. 3 is the assembly relation between blade root and the blade root slot, and blade root 1 is installed in the blade root slot 3, and blade root 1 is tightly adorned with blade root slot 3, by bore the two rows hole on blade root slot 3, sets up pin 2 and fixes.The pin (Fig. 2) of band tapering is adopted in the locking of blade root, is convenient to install and pull down.
Claims (2)
1. untuned moving vane that is applicable to blast furnace gas energy recovery turbine, comprise vane type line and blade root and blade root slot, it is characterized in that, the molded lines of described blade is a distorted shape, blade root is the trident blade root, blade root puts in the blade root slot, and two row's fixed holes are arranged on the blade root slot, and pin is installed in the fixed hole.
2. the untuned moving vane that is applicable to blast furnace gas energy recovery turbine as claimed in claim 1 is characterized in that described pin is a tapered configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200289172U CN201209463Y (en) | 2008-04-23 | 2008-04-23 | Frequency non-modulation moving blade suitable for blast furnace gas energy recovery and turbining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200289172U CN201209463Y (en) | 2008-04-23 | 2008-04-23 | Frequency non-modulation moving blade suitable for blast furnace gas energy recovery and turbining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209463Y true CN201209463Y (en) | 2009-03-18 |
Family
ID=40480195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200289172U Expired - Lifetime CN201209463Y (en) | 2008-04-23 | 2008-04-23 | Frequency non-modulation moving blade suitable for blast furnace gas energy recovery and turbining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209463Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109415944A (en) * | 2016-06-29 | 2019-03-01 | 西门子股份公司 | For optimizing the method and rotor blade of the intrinsic frequency of rotor blade |
-
2008
- 2008-04-23 CN CNU2008200289172U patent/CN201209463Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109415944A (en) * | 2016-06-29 | 2019-03-01 | 西门子股份公司 | For optimizing the method and rotor blade of the intrinsic frequency of rotor blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090318 |