CN202359131U - High-speed blast furnace gas excessive pressure turbine - Google Patents
High-speed blast furnace gas excessive pressure turbine Download PDFInfo
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- CN202359131U CN202359131U CN2011204277890U CN201120427789U CN202359131U CN 202359131 U CN202359131 U CN 202359131U CN 2011204277890 U CN2011204277890 U CN 2011204277890U CN 201120427789 U CN201120427789 U CN 201120427789U CN 202359131 U CN202359131 U CN 202359131U
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- high speed
- gas recovery
- top gas
- furnace top
- recovery turbine
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Abstract
The utility model discloses a high-speed blast furnace gas excessive pressure turbine which comprises a base, a shell, a rotor, a bearing assembly, a fixed blade and an air seal assembly, wherein the shell is connected on the base and comprises an air inlet and an air outlet, the rotor comprises a main shaft, a wheel disc and a movable blade, the bearing assembly comprises a first bearing and a second bearing which are arranged on the shell, the two end parts of the main shaft are arranged in the first bearing and the second bearing in a rotating way, the fixed blade is arranged on the inner surface of the shell and is opposite to the movable blade, and the air seal assembly is arranged between one end of the main shaft close to the wheel disc and the shell and comprises a labyrinth seal close to the wheel disc and a carbon ring seal far away from the wheel disc. The high-speed blast furnace gas excessive pressure turbine has the advantages of simpleness in equipment structure, high rotating speed and the like. The rotating speed of the high-speed blast furnace gas excessive pressure turbine can be matched with that of a blast furnace blower, so that the high-speed blast furnace gas excessive pressure turbine can be connected with the blast furnace; therefore, the energy consumption of a gearbox is reduced, and the shafting of the whole set is simple and reasonable.
Description
Technical field
The utility model relates to the Power Machinery Engineering technical field, relates in particular to a kind of high speed blast-furnace top gas recovery turbine machine.
Background technology
The blast-furnace top gas recovery turbine machine is the sub product that utilizes blast-furnace smelting; Be pressure ability and the heat energy that top gas has; Do work the device of output mechanical energy through turbine expansion; Be a kind of second energy retrieving arrangement that can play the environmental protection and energy saving effect, can not only recovered energy, the protection environment, can also reduce cost for iron and steel enterprise.
At present; Usually the blast furnace blast energy recovery unit (BPRT) that adopts coal gas turbine that blast-furnace top gas recovery turbine machine and blast furnace blowing engine are designed as same system and motor coaxle to drive, with the pressure of blast furnace gas can and heat energy change direct driving blast furnace blowing engine work after the mechanical energy into.Yet because the structural limitations of existing blast-furnace top gas recovery turbine machine, its working speed is generally 3000 rev/mins (electrical network 50Hz) or 3600 rev/mins (electrical network 60Hz).
For the BPRT unit; Because the working speed that the rotating speed of existing blast-furnace top gas recovery turbine machine is lower than blast furnace blowing engine (for example; 4800 rev/mins); Therefore can't directly link to each other with blast furnace blowing engine, must between existing blast-furnace top gas recovery turbine machine and blast furnace blowing engine, be connected wheel box, rotating speed is promoted to the higher rotation speed that satisfies the blast furnace blowing engine requirement.Can bring following shortcoming for the BPRT unit increases a wheel box: one, BPRT unit unreasonable allocation, system constitute complicacy, the trouble spot is many, the maintenance of the equipment workload is big; Two, axle is that design difficulty is big, and is high to manufacturing, the installation requirement of equipment; Three, can lose mechanical energy through the wheel box transmission, whole BPRT unit efficiency is reduced; Four, the BPRT unit equipment is many, floor space is big, has increased BPRT unit cost.
Therefore, need a kind of high speed blast-furnace top gas recovery turbine machine, to address the above problem.
The utility model content
In order to overcome the deficiency of above-mentioned prior art, the utility model provides a kind of high speed blast-furnace top gas recovery turbine machine, comprising: base; Shell, said shell is connected on the said base, and said shell comprises inlet end and exhaust side; Rotor, said rotor comprise main shaft, are arranged on the wheel disc of said main shaft one end and the rotor blade that is arranged on the excircle of said wheel disc; Bearing assembly, said bearing assembly comprise the clutch shaft bearing and second bearing that is arranged on the said shell, two ends of said main shaft can be rotatably set in respectively in the said clutch shaft bearing with said second bearing in; Stator blades, said stator blades are arranged on the internal surface of said shell and with said rotor blade and relatively are provided with, to match with said rotor blade; Gentle sealing assembly, said sealing gland assembly are arranged between the end and said shell near said wheel disc of said main shaft, and said sealing gland assembly comprises near the labyrinth seal of said wheel disc with away from the carbocyclic ring sealing member of said wheel disc.
Preferably, said carbocyclic ring sealing member is multistage carbocyclic ring sealing member, and between said multistage carbocyclic ring sealing member, fills nitrogen.
Preferably, said main shaft and said wheel disc are for dividing body structure, and said main shaft is connected through pull bar with said wheel disc.
Preferably, said rotor blade is an one-level rotor blade structure, and said stator blades is an one-level stator blades structure.
Preferably, said rotor blade is a secondary rotor blade structure, and said stator blades is a secondary stator blades structure.
Preferably, said rotor blade is fixed on the said wheel disc through vertical tree-like blade root.
Preferably, said high speed blast-furnace top gas recovery turbine machine also comprises the stator blades drive unit, is used to change the angle of said stator blades.
Preferably, the ratio of the diameter of the depth of blade of said stator blades and said rotor blade and said main shaft is smaller or equal to 0.2.
Preferably, the inlet end of said high speed blast-furnace top gas recovery turbine machine adopts axial admission structure, the downward air intake structure in footpath or radially goes up air intake structure.
Preferably, the exhaust side of said high speed blast-furnace top gas recovery turbine machine adopts the footpath exhaust structure or the exhaust structure that directly makes progress downwards.
The high speed blast-furnace top gas recovery turbine machine of the utility model is because the cantilever rotor structure that adopts biradial to support; Therefore have that device structure is simple, the rotating speed advantages of higher, and then high speed blast-furnace top gas recovery turbine machine can be complementary with the rotating speed of blast furnace blowing engine.Like this, high speed blast-furnace top gas recovery turbine machine can directly link to each other with blast furnace blowing engine, has not only saved the energy dissipation of wheel box, makes that also the axle of whole unit is the advantages of simple that becomes.In addition, the cantilever rotor structure that adopts biradial to support only needs at low pressure end the sealing gland assembly to be set, and has saved the sealing of high-pressure side, has therefore reduced the probability that accident occurs, guarantees the safety of equipment.Further, because high speed blast-furnace top gas recovery turbine machine can have high rotational speed, the gas flow rate in the leaf grating is higher, therefore can alleviate the dust stratification problem.
In the utility model content part, introduced the notion of a series of reduced forms, this will further explain in the embodiment part.The utility model content part does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to confirm technical scheme required for protection.
Below in conjunction with accompanying drawing, specify the advantage and the characteristic of the utility model.
Description of drawings
The attached drawings of the utility model is used to understand the utility model in this part as the utility model.The embodiment and the description thereof of the utility model have been shown in the accompanying drawing, have been used for explaining the principle of the utility model.In the accompanying drawings,
Fig. 1 is the sectional view according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model;
Fig. 2 is the synoptic diagram according to the rotor of an embodiment of the utility model;
Fig. 3 is the enlarged view according to the sealing gland assembly of an embodiment of the utility model;
Fig. 4 is the sectional view according to the high speed blast-furnace top gas recovery turbine machine of another embodiment of the utility model;
Fig. 5 A is the synoptic diagram according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model;
Fig. 5 B is the synoptic diagram according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model; And
Fig. 5 C is the synoptic diagram according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model.
Embodiment
In the description hereinafter, provided a large amount of concrete details and the utility model has been understood more completely so that provide.Yet, it will be apparent to one skilled in the art that the utility model can need not one or more these details and be able to enforcement.In other example,, describe for technical characterictics more well known in the art for fear of obscuring with the utility model.
In order thoroughly to understand the utility model, detailed structure will be proposed in following description.Obviously, the execution of the utility model is not limited to the specific details that those skilled in the art has the knack of.The preferred embodiment of the utility model is described in detail as follows, yet except these were described in detail, the utility model can also have other embodiments.
Fig. 1 is the sectional view according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model; Fig. 2 is the synoptic diagram according to the rotor of an embodiment of the utility model, and Fig. 3 is the enlarged view according to the sealing gland assembly of an embodiment of the utility model.Parts identical in Fig. 1-3 use identical Reference numeral.To combine Fig. 1-3 pair of high speed blast-furnace top gas recovery turbine machine to be described in detail below according to the utility model.
As shown in Figure 1, high speed blast-furnace top gas recovery turbine machine 100 comprises base 110, shell 120, rotor 130, bearing assembly, stator blades 150 gentle sealing assemblies 160.
As shown in Figure 2, rotor 130 comprises main shaft 131, wheel disc 132 and rotor blade 133.Wheel disc 132 is arranged on an end of main shaft 131.Preferably, main shaft 131 is the branch body structure with wheel disc 132, and main shaft 131 is connected through pull bar 134 with wheel disc 132.Main shaft 131 and wheel disc 132 are set to the manufacturing that the branch body structure can be convenient to each parts, and can guarantee both intensity.Rotor blade 133 is arranged on the excircle of wheel disc 132.It is understandable that rotor blade 133 can adopt prior art rotor blade structure commonly used, therefore no longer details.In order to make rotor have good margin of strength and to be applicable to the high speed Working environment, preferably, rotor blade 133 is fixed on the wheel disc 132 through vertical tree-like blade root.
See figures.1.and.2, bearing assembly comprises the clutch shaft bearing 141 and second bearing 142.The clutch shaft bearing 141 and second bearing 142 are arranged on the shell 120, and particularly, the clutch shaft bearing 141 and second bearing 142 can directly be arranged on the shell 120, also can be arranged on the shell 120 through strut member.Two ends of main shaft 131 can be rotatably set in the clutch shaft bearing 141 respectively and in second bearing 142, support main shaft 131 is carried out biradial.
Preferably, the ratio of the diameter of the depth of blade of stator blades 150 and rotor blade 133 and main shaft 131 is smaller or equal to 0.2.Rotor blade of the utility model and stator blades adopt the short blade design, and the natural frequency that can make blade avoids resonance to cause leaf destruction far above the excited frequency under the working speed.In addition, can also reduce the centrifugal tensile stress of rotor blade under high speed rotating, improve the intensity of blade.
The high speed blast-furnace top gas recovery turbine machine 100 of the utility model is because the cantilever rotor structure that adopts biradial to support; Therefore have that device structure is simple, the rotating speed advantages of higher, and then high speed blast-furnace top gas recovery turbine machine 100 can be complementary with the rotating speed of blast furnace blowing engine.Like this, high speed blast-furnace top gas recovery turbine machine 100 can directly link to each other with blast furnace blowing engine, has not only saved the energy dissipation of wheel box, makes that also the axle of whole unit is the advantages of simple that becomes.In addition, the cantilever rotor structure that adopts biradial to support only needs at low pressure end the sealing gland assembly to be set, and has saved the sealing of high-pressure side, has therefore reduced the probability that accident occurs, guarantees the safety of equipment.Further, because high speed blast-furnace top gas recovery turbine machine 100 can have high rotational speed, the gas flow rate in the leaf grating is higher, therefore can alleviate the dust stratification problem.
According to embodiment of the utility model, as depicted in figs. 1 and 2, rotor blade 133 is an one-level rotor blade structure, and stator blades 150 is an one-level stator blades structure.Adopt single step arrangement not only to make high speed blast-furnace top gas recovery turbine machine 100 have high rotational speed, being suitable for and the high speed situation of blast furnace blowing engine, but also have higher heat insulating ability with rotating speed.
According to another embodiment of the utility model, as shown in Figure 4, rotor blade 133 is secondary rotor blade structure (promptly comprising rotor blade 133A and 133B), and stator blades 150 is secondary stator blades structure (promptly comprising stator blades 150A and 150B).Adopt two-stage structure that high speed blast-furnace top gas recovery turbine machine 100 both can be operated in and the high-speed working condition of blast furnace blowing engine with rotating speed; Can be operated in the operating mode with generator or motor same rotational speed again, also make high speed blast-furnace top gas recovery turbine machine 100 have higher heat insulating ability.
Fig. 5 A is the synoptic diagram according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model; Fig. 5 B is the synoptic diagram according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model, and Fig. 5 C is the synoptic diagram according to the high speed blast-furnace top gas recovery turbine machine of an embodiment of the utility model.
The inlet end of high speed blast-furnace top gas recovery turbine machine 500 can adopt axial admission structure (shown in Fig. 5 A), the downward air intake structure (shown in Fig. 5 B) in footpath or radially go up air intake structure (shown in Fig. 5 C).
The exhaust side of high speed blast-furnace top gas recovery turbine machine 500 can adopt the footpath exhaust structure (shown in Fig. 5 A) or the exhaust structure (shown in Fig. 5 B) that directly makes progress downwards.
Air inlet and exhaust mode that high speed blast-furnace top gas recovery turbine machine 500 adopts are changeable, therefore can carry out individual layer layout or double-deck the layout according to the situation at scene, so that pipeline orientation and structural arrangement are all very flexibly.
The utility model is illustrated through the foregoing description, but should be understood that, the foregoing description just is used for for example and illustrative purposes, but not is intended to the utility model is limited in the described scope of embodiments.It will be understood by those skilled in the art that in addition; The utility model is not limited to the foregoing description; Instruction according to the utility model can also be made more kinds of variants and modifications, and these variants and modifications all drop in the utility model scope required for protection.The protection domain of the utility model is defined by appended claims book and equivalent scope thereof.
Claims (10)
1. a high speed blast-furnace top gas recovery turbine machine is characterized in that, comprising:
Base;
Shell, said shell is connected on the said base, and said shell comprises inlet end and exhaust side;
Rotor, said rotor comprise main shaft, are arranged on the wheel disc of said main shaft one end and the rotor blade that is arranged on the excircle of said wheel disc;
Bearing assembly, said bearing assembly comprise the clutch shaft bearing and second bearing that is arranged on the said shell, two ends of said main shaft can be rotatably set in respectively in the said clutch shaft bearing with said second bearing in;
Stator blades, said stator blades are arranged on the internal surface of said shell and with said rotor blade and relatively are provided with, to match with said rotor blade; With
Sealing gland assembly, said sealing gland assembly are arranged between the end and said shell near said wheel disc of said main shaft, and said sealing gland assembly comprises near the labyrinth seal of said wheel disc with away from the carbocyclic ring sealing member of said wheel disc.
2. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that said carbocyclic ring sealing member is multistage carbocyclic ring sealing member, and between said multistage carbocyclic ring sealing member, fill nitrogen.
3. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that said main shaft and said wheel disc are for dividing body structure, said main shaft is connected through pull bar with said wheel disc.
4. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that said rotor blade is an one-level rotor blade structure, and said stator blades is an one-level stator blades structure.
5. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that said rotor blade is a secondary rotor blade structure, and said stator blades is a secondary stator blades structure.
6. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that said rotor blade is fixed on the said wheel disc through vertical tree-like blade root.
7. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that said high speed blast-furnace top gas recovery turbine machine also comprises the stator blades drive unit, is used to change the angle of said stator blades.
8. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that the ratio of the depth of blade of said stator blades and said rotor blade and the diameter of said main shaft is smaller or equal to 0.2.
9. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that the inlet end of said high speed blast-furnace top gas recovery turbine machine adopts axial admission structure, the downward air intake structure in footpath or radially goes up air intake structure.
10. according to the described high speed blast-furnace top gas recovery turbine of claim 1 machine, it is characterized in that the exhaust side of said high speed blast-furnace top gas recovery turbine machine adopts the footpath exhaust structure or the exhaust structure that directly makes progress downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204277890U CN202359131U (en) | 2011-11-02 | 2011-11-02 | High-speed blast furnace gas excessive pressure turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204277890U CN202359131U (en) | 2011-11-02 | 2011-11-02 | High-speed blast furnace gas excessive pressure turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202359131U true CN202359131U (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204277890U Expired - Lifetime CN202359131U (en) | 2011-11-02 | 2011-11-02 | High-speed blast furnace gas excessive pressure turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202359131U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604610A (en) * | 2015-09-11 | 2016-05-25 | 陕西擎华新能源技术有限公司 | Nitric acid tail gas excess pressure recovery equipment |
| CN106321152A (en) * | 2016-08-29 | 2017-01-11 | 中航动力股份有限公司 | Blast furnace gas excess pressure recovery turbine motor of cantilever single-rotor structure |
| CN109114015A (en) * | 2018-09-30 | 2019-01-01 | 陕西擎华新能源技术有限公司 | A kind of integration residual pressure recovering equipment |
| CN110529197A (en) * | 2019-10-10 | 2019-12-03 | 兰州长城机械工程有限公司 | A kind of variable stator vane angle device suitable for high-temperature flue gas turbine |
-
2011
- 2011-11-02 CN CN2011204277890U patent/CN202359131U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604610A (en) * | 2015-09-11 | 2016-05-25 | 陕西擎华新能源技术有限公司 | Nitric acid tail gas excess pressure recovery equipment |
| CN106321152A (en) * | 2016-08-29 | 2017-01-11 | 中航动力股份有限公司 | Blast furnace gas excess pressure recovery turbine motor of cantilever single-rotor structure |
| CN106321152B (en) * | 2016-08-29 | 2018-01-09 | 中航动力股份有限公司 | A kind of blast furnace coal gas residual pressure recovery turbine machine of cantilever single-turn minor structure |
| CN109114015A (en) * | 2018-09-30 | 2019-01-01 | 陕西擎华新能源技术有限公司 | A kind of integration residual pressure recovering equipment |
| CN110529197A (en) * | 2019-10-10 | 2019-12-03 | 兰州长城机械工程有限公司 | A kind of variable stator vane angle device suitable for high-temperature flue gas turbine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |
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| CX01 | Expiry of patent term |