CN202360154U - Coaxial constant-speed blast furnace turbine unit - Google Patents
Coaxial constant-speed blast furnace turbine unit Download PDFInfo
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- CN202360154U CN202360154U CN2011204284428U CN201120428442U CN202360154U CN 202360154 U CN202360154 U CN 202360154U CN 2011204284428 U CN2011204284428 U CN 2011204284428U CN 201120428442 U CN201120428442 U CN 201120428442U CN 202360154 U CN202360154 U CN 202360154U
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- blast furnace
- unit
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- gas recovery
- constant speed
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Abstract
The utility model discloses a coaxial constant-speed blast furnace turbine unit comprising a motor, a speed changer, a blast furnace blower and a high-speed blast furnace gas excess pressure turbomachine, wherein the motor is connected to one side of the blast furnace blower through the speed changer; the high-speed blast furnace gas excess pressure turbomachine is coaxially connected to the other side of the blast furnace blower; and the working rotating speed of the high-speed blast furnace gas excess pressure turbomachine is the same as that of the blast furnace blower. The coaxial constant-speed blast furnace turbine unit is characterized in that the high-speed blast furnace gas excess pressure turbomachine which is the same as the blast furnace blower in rotating speed (for example, 4800 r/min) is selected and coaxially connected to the blast furnace blower, thereby avoiding the connection of the speed changer between the high-speed blast furnace gas excess pressure turbomachine and the blast furnace blower; as a result, the shafting design difficulty is reduced; the energy utilization efficiency is improved; and the requirements for equipment manufacture and mounting are reduced.
Description
Technical field
The utility model relates to overbottom pressure heat recovery field, relate in particular to the coaxial constant speed turbine of a kind of blast furnace unit (Blast furance Equal Speed turbine Train, BEST).
Background technique
In traditional blast furnace technology system; Normally blast furnace gas is drawn in order to improve energy utilization ratio; Through getting into blast-furnace top gas recovery turbine machine inlet behind the valves such as inlet butterfly valve, push-pull valve; The blast furnace gas acting of in the runner that stator blade and moving vane are formed, constantly expanding then, and be converted into kinetic energy and act on active wheel and make it rotation, active wheel drives generator through coupling and rotates together and generate electricity.
In this system, the blast-furnace top gas recovery turbine machine with the pressure of coal gas can and heat energy change mechanical energy into, pass to generator then and change electric energy into and send into electrical network.Motor obtains electric energy and changes mechanical energy driving blast furnace blower into from electrical network.The electric energy that changes electric energy and motor into for fear of the mechanical energy of generator changes the loss that twice energy transition process of mechanical energy produced into; And the line loss in the electric energy transmission course; Design the blast furnace air energy recovery unit (BPRT) that blast-furnace top gas recovery turbine machine and blast furnace blower are driven as the coal gas turbine and the motor coaxle of same system, can change the pressure of blast furnace gas into after the mechanical energy directly driving blast furnace blower work with heat energy.
Existing BPRT unit is the both sides that motor and blast-furnace top gas recovery turbine machine are arranged in blast furnace blower, for blast furnace blower required energy is provided jointly.Motor is connected with blast furnace blower through speed changer, and the blast-furnace top gas recovery turbine machine also is connected with blast furnace blower through gearbox or speed change clutch.This BPRT unit is owing to adopt two speed changers, and through twice speed change conversion, therefore axle is that design difficulty is bigger, and is higher to the manufacturing and the installation requirement of equipment.And, the conversion of twice speed change cause system constitute complicated, the fault point is more and the plant maintenance workload is bigger, increased energy loss, reduced the efficient of BPRT unit.In addition, this BPRT unit equipment is more, floor space is bigger, has therefore increased the cost of BPRT unit.
Therefore, need the coaxial constant speed turbine of a kind of blast furnace unit to address the above problem.
The model utility content
In order to overcome the deficiency of above-mentioned existing technology; The utility model provides the coaxial constant speed turbine of a kind of blast furnace unit; The coaxial constant speed turbine of said blast furnace unit comprises motor, speed changer, blast furnace blower and high speed blast-furnace top gas recovery turbine machine; Said motor is connected a side of said blast furnace blower through said speed changer; Said high speed blast-furnace top gas recovery turbine machine is connected the opposite side of said blast furnace blower coaxially, and said high speed blast-furnace top gas recovery turbine machine is identical with the working speed of said blast furnace blower.
Preferably, also be connected with clutch between said blast furnace blower and the said high speed blast-furnace top gas recovery turbine machine.
Preferably, the arrangement of the coaxial constant speed turbine of said blast furnace unit is double-deck the layout.
Preferably, said blast furnace blower adopts the intake and exhaust structure of footpath air inlet downwards-following exhaust.
Preferably, said high speed blast-furnace top gas recovery turbine machine adopts the intake and exhaust structure of axial admission-footpath exhaust downwards.
Preferably, said high speed blast-furnace top gas recovery turbine machine comprises: base; Shell, said shell is connected on the said base, and said shell comprises inlet end and exhaust end; Rotor, said rotor comprise main shaft, are arranged on the wheel disc of said main shaft one end and the moving vane that is arranged on the excircle of said wheel disc; Bearing unit, said bearing unit 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 blade, said stator blade are arranged on the internal surface of said shell and with said moving vane and relatively are provided with, to match with said moving vane; 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 of said wheel disc.
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 moving vane is an one-level moving vane structure, and said stator blade is an one-level stator blade structure.
Preferably, said moving vane is a secondary moving vane structure, and said stator blade is a secondary stator blade structure.
Preferably, said high speed blast-furnace top gas recovery turbine machine also comprises the stator blade drive unit, is used to change the angle of said stator blade.
Preferably, the ratio of the diameter of the blade height of said stator blade and said moving vane and said main shaft is smaller or equal to 0.2.
The utility model is through (for example selecting the high speed blast-furnace top gas recovery turbine machine identical with the blast furnace blower rotating speed; 4800 rev/mins) high speed blast-furnace top gas recovery turbine machine is connected with blast furnace blower coaxially; Avoid between high speed blast-furnace top gas recovery turbine machine and blast furnace blower, being connected speed changer, be design difficulty to reduce axle, improve energy utilization efficiency and reduce requirement device fabrication and installation.In addition, compared with prior art, owing to reduce by a speed changer, therefore can reduce can also plant maintenance workload, reduction unit cost and reduce floor space etc.
In the model utility 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 technological scheme required for protection, does not more mean that the protection domain of attempting to confirm technological 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 schematic representation according to the coaxial constant speed turbine of the blast furnace unit of a mode of execution of the utility model;
Fig. 2 is the sectional drawing according to the high speed blast-furnace top gas recovery turbine machine of a mode of execution of the utility model;
Fig. 3 is the schematic representation according to the rotor of a mode of execution of the utility model;
Fig. 4 is the zoomed-in view according to the sealing gland assembly of a mode of execution of the utility model; And
Fig. 5 is the sectional drawing according to the high speed blast-furnace top gas recovery turbine machine of another mode of execution of the utility model.
Embodiment
Next, will combine accompanying drawing more intactly to describe the utility model, the embodiment of the utility model be shown in the accompanying drawing.But the utility model can be with multi-form enforcement, and should not be interpreted as the embodiment who is confined to propose here.On the contrary, it is thorough and complete to provide these embodiments to expose, and the scope of the utility model is fully passed to those skilled in the art.In the accompanying drawings, for clear, the size in layer and district and relative size maybe be by exaggerative.Same reference numerals is represented components identical from start to finish.
Should be understood that when parts be called as " with ... adjacent " or during " being connected to " other parts, it can be directly adjacent with other parts or be connected, and perhaps can have parts between two parties.On the contrary, when parts are called as " with ... direct neighbor " or " being directly connected to " other parts, then there are not parts between two parties.
Fig. 1 is the schematic representation according to the coaxial constant speed turbine of the blast furnace unit of a mode of execution of the utility model.As shown in Figure 1, the coaxial constant speed turbine of blast furnace unit 100 comprises motor 101, speed changer 102, blast furnace blower 103 and high speed blast-furnace top gas recovery turbine machine 105.
Motor 101 is connected a side of blast furnace blower 103, and for blast furnace blower 103 provides part energy, blast furnace blower 103 required another part energy are then provided by high speed blast-furnace top gas recovery turbine machine 105.Usually; The working speed of motor 101 is 3000 rev/mins (electrical network 50Hz) or 3600 rev/mins (electrical network 60Hz); And the working speed of blast furnace blower 103 higher (for example, 4800 rev/mins) therefore need connect speed changer 102 between motor 101 and blast furnace blower 103.Speed changer 102 for example is that gear-box or other can have the device of speed changing function.
High speed blast-furnace top gas recovery turbine machine 105 is connected the opposite side of blast furnace blower 103 coaxially.Said " connecting coaxially " is appreciated that to not being provided with speed changer between high speed blast-furnace top gas recovery turbine machine 105 and the blast furnace blower 103.High speed blast-furnace top gas recovery turbine machine 105 can be converted into mechanical energy with heat energy with the pressure of blast furnace gas and offer blast furnace blower 103, with the overbottom pressure that plays the recovery blast furnace gas and the effect of waste heat.Wherein, high speed blast-furnace top gas recovery turbine machine 105 is identical with the working speed of blast furnace blower 103.The utility model is through (for example selecting the high speed blast-furnace top gas recovery turbine machine 105 identical with blast furnace blower 103 rotating speeds; 4800 rev/mins) high speed blast-furnace top gas recovery turbine machine 105 is connected with blast furnace blower 103 coaxially; Avoiding being connected speed changer between high speed blast-furnace top gas recovery turbine machine 105 and the blast furnace blower 103, and then to reduce axle be design difficulty, improve energy utilization efficiency and reduce unit cost etc.
Preferably, also be connected with clutch 104 between blast furnace blower 103 and the high speed blast-furnace top gas recovery turbine machine 105, to cut off or to transmit the power that high speed blast-furnace top gas recovery turbine machine 105 transmits to blast furnace blower 103 as required.
Preferably; The arrangement of the coaxial constant speed turbine of blast furnace unit 100 is double-deck the layout; That is, motor 101, speed changer 102, blast furnace blower 103 and high speed blast-furnace top gas recovery turbine machine 105 etc. are arranged in the running layer apart from the ground certain distance, and conveyance conduit etc. are arranged in ground floor.The coaxial constant speed turbine of blast furnace unit 100 is arranged as double layer construction can be so that maintenance.As an example, blast furnace blower 103 adopts the intake and exhaust structure of footpath air inlet downwards-following exhaust, so that arrange the conveyance conduit of blast furnace blower 103.As an example, high speed blast-furnace top gas recovery turbine machine 105 adopts the intake and exhaust structure of axial admission-footpath exhaust downwards, the convenient conveyance conduit of arranging high speed blast-furnace top gas recovery turbine machine 105 in the time of with the raising energy conversion efficiency.It is understandable that; Blast furnace blower 103 also can adopt and radially go up air inlet-go up exhaust, radially go up the intake and exhaust structure of air inlet-following exhaust or footpath air inlet downwards-last exhaust; High speed blast-furnace top gas recovery turbine machine 105 also can adopt other intake and exhaust structure; For example footpath air inlet downwards-following exhaust, radially go up the exhaust etc. that makes progress of air inlet-following exhaust or axial admission-footpath, those skilled in the art can select the intake and exhaust structure of blast furnace blower 103 and high speed blast-furnace top gas recovery turbine machine 105 according to actual needs.
Fig. 2 is the sectional drawing according to the high speed blast-furnace top gas recovery turbine machine of a mode of execution of the utility model; Fig. 3 is the schematic representation according to the rotor of a mode of execution of the utility model, and Fig. 4 is the zoomed-in view according to the sealing gland assembly of a mode of execution of the utility model.To combine Fig. 2-4 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 2, high speed blast-furnace top gas recovery turbine machine 105 comprises base 210, shell 220, rotor 230, bearing unit, stator blade 250 gentle sealing assemblies 260.
Shell 220 is connected on the base 210, is used to hold rotor 230, bearing unit and stator blade 250 etc.Shell 220 comprises inlet end 221 and exhaust end 222, and wherein, inlet end 221 is used to receive the blast furnace gas with elevated pressures ability and heat energy from blast furnace, and exhaust end 222 is used to discharge the blast furnace gas of having accomplished the acting and having had lower pressure and temperature.
As shown in Figure 3, rotor 230 comprises main shaft 231, wheel disc 232 and moving vane 233.Wheel disc 232 is arranged on an end of main shaft 231.Preferably, main shaft 231 is the branch body structure with wheel disc 232, and main shaft 231 is connected through pull bar 234 with wheel disc 232.Main shaft 231 and wheel disc 232 are set to the manufacturing that the branch body structure can be convenient to each parts, and can guarantee both intensity.Moving vane 233 is arranged on the excircle of wheel disc 232.It is understandable that moving vane 233 can adopt existing technology moving vane structure commonly used, therefore no longer details.In order to make rotor have good margin of safety and to be applicable to working environment at a high speed, preferably, moving vane 233 is fixed on the wheel disc 232 through vertical tree-like blade root.
With reference to Fig. 2 and Fig. 3, bearing unit comprises the clutch shaft bearing 241 and second bearing 242.The clutch shaft bearing 241 and second bearing 242 are arranged on the shell 220, and particularly, the clutch shaft bearing 241 and second bearing 242 can directly be arranged on the shell 220, also can be arranged on the shell 220 through supporting element.Two ends of main shaft 231 can be rotatably set in the clutch shaft bearing 241 respectively and in second bearing 242, support main shaft 231 is carried out biradial.
Preferably, the ratio of the diameter of the blade height of stator blade 250 and moving vane 233 and main shaft 231 is smaller or equal to 0.2.Moving vane of the utility model and stator blade adopt the short blade design, and the natural frequency of vibration 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 moving vane under high speed rotating, improve the intensity of blade.
The high speed blast-furnace top gas recovery turbine machine 105 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 105 can be complementary with the rotating speed of blast furnace blower.Like this, high speed blast-furnace top gas recovery turbine machine 105 can directly link to each other with blast furnace blower, has not only saved the energy dissipation of gearbox, 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 voltage terminal the sealing gland assembly to be set, and has saved the sealing of high voltage terminal, has therefore reduced the probability that accident occurs, guarantees the reliability of equipment.Further, because high speed blast-furnace top gas recovery turbine machine 105 can have high rotational speed, the gas flow rate in the leaf grating is higher, therefore can alleviate the dust stratification problem.
According to mode of execution of the utility model, as shown in Figures 2 and 3, moving vane 233 is an one-level moving vane structure, and stator blade 250 is an one-level stator blade structure.Adopt single step arrangement not only to make high speed blast-furnace top gas recovery turbine machine 105 have high rotational speed, being suitable for and the high speed situation of blast furnace blower, but also have higher adiabatic efficiency with rotating speed.
According to another mode of execution of the utility model, as shown in Figure 5, moving vane 233 is secondary moving vane structure (promptly comprising moving vane 233A and 233B), and stator blade 250 is secondary stator blade structure (promptly comprising stator blade 250A and 250B).Adopt two-stage structure that high speed blast-furnace top gas recovery turbine machine 105 both can be operated in and the high-speed working condition of blast furnace blower 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 105 have higher adiabatic efficiency.
Need to prove, more than only with axial admission-footpath upwards exhaust structure be example, the principle of high speed blast-furnace top gas recovery turbine machine 105 is described.High speed blast-furnace top gas recovery turbine machine 105 can also be set to other intake and exhaust structure, enumerates no longer one by one at this.
The utility model is through (for example selecting the high speed blast-furnace top gas recovery turbine machine identical with the blast furnace blower rotating speed; 4800 rev/mins) high speed blast-furnace top gas recovery turbine machine is connected with blast furnace blower coaxially; Avoid between high speed blast-furnace top gas recovery turbine machine and blast furnace blower, being connected speed changer, be design difficulty to reduce axle, improve energy utilization efficiency and reduce requirement device fabrication and installation.In addition, compared with prior art, owing to reduce by a speed changer, therefore can reduce can also plant maintenance workload, reduction unit cost and reduce floor space etc.
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 (11)
1. the coaxial constant speed turbine of blast furnace unit; It is characterized in that; The coaxial constant speed turbine of said blast furnace unit comprises motor, speed changer, blast furnace blower and high speed blast-furnace top gas recovery turbine machine; Said motor is connected a side of said blast furnace blower through said speed changer, and said high speed blast-furnace top gas recovery turbine machine is connected the opposite side of said blast furnace blower coaxially, and said high speed blast-furnace top gas recovery turbine machine is identical with the working speed of said blast furnace blower.
2. according to the coaxial constant speed turbine of the described blast furnace of claim 1 unit, it is characterized in that, also be connected with clutch between said blast furnace blower and the said high speed blast-furnace top gas recovery turbine machine.
3. according to the coaxial constant speed turbine of the described blast furnace of claim 1 unit, it is characterized in that the arrangement of the coaxial constant speed turbine of said blast furnace unit is double-deck the layout.
4. according to the coaxial constant speed turbine of the described blast furnace of claim 3 unit, it is characterized in that said blast furnace blower adopts the intake and exhaust structure of footpath air inlet downwards-following exhaust.
5. according to the coaxial constant speed turbine of the described blast furnace of claim 3 unit, it is characterized in that said high speed blast-furnace top gas recovery turbine machine adopts the intake and exhaust structure of axial admission-footpath exhaust downwards.
6. according to the coaxial constant speed turbine of the described blast furnace of claim 1 unit, it is characterized in that said high speed blast-furnace top gas recovery turbine machine comprises:
Base;
Shell, said shell is connected on the said base, and said shell comprises inlet end and exhaust end;
Rotor, said rotor comprise main shaft, are arranged on the wheel disc of said main shaft one end and the moving vane that is arranged on the excircle of said wheel disc;
Bearing unit, said bearing unit 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 blade, said stator blade are arranged on the internal surface of said shell and with said moving vane and relatively are provided with, to match with said moving vane; 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 of said wheel disc.
7. according to the coaxial constant speed turbine of the described blast furnace of claim 6 unit, 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.
8. according to the coaxial constant speed turbine of the described blast furnace of claim 6 unit, it is characterized in that said moving vane is an one-level moving vane structure, and said stator blade is an one-level stator blade structure.
9. according to the coaxial constant speed turbine of the described blast furnace of claim 6 unit, it is characterized in that said moving vane is a secondary moving vane structure, and said stator blade is a secondary stator blade structure.
10. according to the coaxial constant speed turbine of the described blast furnace of claim 6 unit, it is characterized in that said high speed blast-furnace top gas recovery turbine machine also comprises the stator blade drive unit, is used to change the angle of said stator blade.
11., it is characterized in that the ratio of the blade height of said stator blade and said moving vane and the diameter of said main shaft is smaller or equal to 0.2 according to the coaxial constant speed turbine of the described blast furnace of claim 6 unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204284428U CN202360154U (en) | 2011-11-02 | 2011-11-02 | Coaxial constant-speed blast furnace turbine unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204284428U CN202360154U (en) | 2011-11-02 | 2011-11-02 | Coaxial constant-speed blast furnace turbine unit |
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| Publication Number | Publication Date |
|---|---|
| CN202360154U true CN202360154U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204284428U Expired - Lifetime CN202360154U (en) | 2011-11-02 | 2011-11-02 | Coaxial constant-speed blast furnace turbine unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN202360154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383867A (en) * | 2011-11-02 | 2012-03-21 | 思安新能源股份有限公司 | Coaxial constant-speed turbine set for blast furnace |
| CN104533811A (en) * | 2014-12-18 | 2015-04-22 | 北京京诚科林环保科技有限公司 | Blast furnace steam-driven air-blast system and method |
-
2011
- 2011-11-02 CN CN2011204284428U patent/CN202360154U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383867A (en) * | 2011-11-02 | 2012-03-21 | 思安新能源股份有限公司 | Coaxial constant-speed turbine set for blast furnace |
| CN104533811A (en) * | 2014-12-18 | 2015-04-22 | 北京京诚科林环保科技有限公司 | Blast furnace steam-driven air-blast system and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 |