CN210714790U - Draw and increase unification and reform transform full-automatic clutch for unit - Google Patents
Draw and increase unification and reform transform full-automatic clutch for unit Download PDFInfo
- Publication number
- CN210714790U CN210714790U CN201921470864.4U CN201921470864U CN210714790U CN 210714790 U CN210714790 U CN 210714790U CN 201921470864 U CN201921470864 U CN 201921470864U CN 210714790 U CN210714790 U CN 210714790U
- Authority
- CN
- China
- Prior art keywords
- bearing
- connecting shaft
- automatic clutch
- frame body
- full
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a draw and increase an all-in-one and reform transform full-automatic clutch for unit, including asynchronous machine adapter flange, insulating shaft coupling, a housing, the output connecting axle, sixth bearing, support body three, fifth bearing, position detection sensor, synchronous automatic clutch, the transmission shaft, fourth bearing, the oil-out, the gear wheel, third bearing, termination barring, the second bearing, the input connecting axle, support body two, the pinion, the oil inlet, support body one, first bearing, with this unit application draught fan, among the steam turbine unit, prevent and solve the electrocorrosion that probably appears after steam turbine and asynchronous machine are simultaneously put into operation to the unit, the rotor is heated uneven bending hidden danger problem, compare in the derailleur, clutch or the variable speed clutch that independently set up in present some unit, the integrated level is high, the function is more complete, The bearing capacity is high, and the bearing device can be flexibly applied to the working conditions of high speed and heavy load.
Description
Technical Field
The invention relates to a thermal power plant induced draft fan and desulfurization booster fan integrated modification unit, in particular to a full-automatic clutch device for the induced draft fan and the desulfurization booster fan integrated modification unit.
Background
According to the national environmental protection requirement, a newly-built thermal power plant should be constructed with a desulfurization and denitrification device synchronously, and the flue gas is discharged into the atmosphere after passing through the desulfurization and denitrification device. Two 1000 MW-level ultra-supercritical coal-fired units are built in a power plant in 2010, a desulfurization device and a denitrification device are synchronously installed in a project, an induced draft fan and a booster fan are respectively arranged, and the resistance of a desulfurization system is overcome by a pressure head of the booster fan.
In recent years, the national standards of industrial environmental protection emission are continuously improved, and environmental protection and energy saving comprehensive transformation are planned for a certain power plant, so that on one hand, environmental protection facilities need to be additionally arranged, the increase of the environmental protection facilities can cause the increase of the smoke resistance of a boiler, the power of an induced draft fan is correspondingly increased, and the output of the original induced draft fan cannot meet the requirements; on the other hand, the original induced draft fan and booster fan are connected in series in a separated mode, when the unit load changes, two fans need to be adjusted simultaneously to match the operation condition, and the adjustment is complex. Based on the two reasons, the induced draft fan and the booster fan are integrated and transformed, and the power of the induced draft fan after integration is increased.
After the improvement of the induced draft and the increase, the induced draft fan is driven by a steam turbine and an asynchronous motor. The draught fan has different working conditions when in operation, and the driving mode needs to be switched according to the operation working conditions. When the output of the steam turbine can not meet the requirements of the induced draft fan, the output of the induced draft fan needs to be supplemented by an asynchronous motor, which is a common driving mode. When the output force of the steam turbine reaches the requirement of the induced draft fan, the asynchronous motor can be stopped or switched to a power generation working condition, and the mode is an independent driving mode. Therefore, the device with the clutch function is required to realize that the steam turbine and the asynchronous motor drive the induced draft fan independently or together.
The existing transmission, clutch or speed change clutch which are independently arranged in some units is limited to be used in a thermal power plant induced draft fan and a desulfurization booster fan integrated modification unit. In the prior art, the induced draft fan needs the simultaneous drive or the independent drive of a steam turbine and an asynchronous motor, the adjustment of the switching mode of the adjustment and control drive is complex, and the hidden trouble problems of electric corrosion, uneven heating and bending of a rotor and the like which may occur after the unit is put into operation are solved,
disclosure of Invention
The purpose of the invention is as follows: this patent is in order to solve thermal power factory draught fan and desulfurization booster fan unification and reform transform the back, the draught fan needs the problem that steam turbine and asynchronous machine simultaneous drive or independent drive's drive switches, and the electric corrosion that probably appears after the unit is put into operation, the problem of hidden danger such as the rotor is heated uneven bending, and then provide one kind and draw and increase the unification and reform transform full automatic clutch for the unit, be applicable to thermal power factory draught fan and desulfurization booster fan unification more and reform transform the unit, its integrated level is high, more multiple functional, bearing capacity is high, can be applied to high speed in a flexible way, the heavily loaded operating mode.
The invention content is as follows: a full-automatic clutch device for a lead-increase-in-one improved unit comprises an input connecting shaft 1, a transmission shaft 18, an output connecting shaft 11, a shell 14, a barring gear 8, a pinion gear 5, a gearwheel 21 and a synchronous automatic clutch 17;
the input connecting shaft 1, the transmission shaft 18 and the output connecting shaft 11 are all arranged in the shell 14, the output connecting shaft 11 and the transmission shaft 18 are located on the same axis and are parallel to the input connecting shaft 1, the input connecting shaft 1 is horizontally arranged on the upper portion of the shell 14, the right end of the input connecting shaft 1 is coaxially connected with the jigger 8, the pinion 5 is fixed in the middle of the horizontally arranged input connecting shaft 1, the transmission shaft 18 and the output connecting shaft 11 are coaxially and sequentially and horizontally arranged on the lower portion of the shell 14 from left to right in sequence and are connected through the synchronous automatic clutch 17, the large gear 21 is fixed in the middle of the transmission shaft 18, and the pinion 5 is meshed.
Further, the right side of the propeller shaft 18 is connected to the C-side of the synchronous automatic clutch 17, and the left side of the output connecting shaft 11 is connected to the D-side of the synchronous automatic clutch 17.
Still further, a first frame body 3, a second frame body 6 and a third frame body 13 are arranged in the shell 14, and the first frame body 3, the second frame body 6 and the third frame body 13 are sequentially and vertically fixed in the shell 14 from left to right.
Still further, be equipped with first bearing 2 between support body 3 and the input connecting axle 1, be equipped with second bearing 7 between support body two 6 and the input connecting axle 1, the left end of input connecting axle 1 supports on support body 3 through first bearing 2, and the right-hand member of input connecting axle 1 supports on support body two 6 through second bearing 7, be equipped with third bearing 22 between support body 3 and transmission shaft 18, be equipped with fourth bearing 19 between support body two 6 and the transmission shaft 18, the left end of transmission shaft 18 supports on support body one 3 through third bearing 22, and the right-hand member of transmission shaft 18 supports on support body two 6 through fourth bearing 19, be equipped with fifth bearing 15 and sixth bearing 12 from a left side to the right side in proper order between support body three 13 and the output connecting axle 11, output connecting axle 11 supports on support body three 13 through fifth bearing 15 and sixth bearing 12.
Preferably, the third bearing 22 and the sixth bearing 12 are axial positioning bearings.
Further, an oil inlet 4 and an oil outlet 20 are arranged outside the housing 14, and the oil outlet 20 is lower than the oil inlet 4.
Preferably, the full-automatic clutch device for the lead-increase integrated modification unit further comprises an insulating coupler 10 and an asynchronous motor adapter flange 9, the left end of the insulating coupler 10 is connected with the right end of the output connecting shaft 11 through a bolt, and the asynchronous motor adapter flange 9 is connected with the right end of the insulating coupler 10 through a bolt. The housing 14 houses a position detection sensor 16.
Preferably, the insulation coupling 13 is a membrane disc coupling having insulation properties.
Has the advantages that: by arranging the full-automatic clutch device between the asynchronous motor and the steam turbine, the problem that a draught fan needs to be driven by the steam turbine and the asynchronous motor simultaneously or independently can be solved, and meanwhile, the hidden trouble problems that the unit is likely to have electric corrosion after operation, the rotor is heated unevenly and bent and the like can be prevented and solved. The insulation coupling is a membrane disc coupling and has insulation property, so that the thermal state expansion amount of a rotor in the running process of unit equipment can be absorbed, a unit shaft current loop of a cutting machine can be cut off, and the unit equipment is prevented from being damaged by electric corrosion; the jigger is arranged at the high-speed end of the full-automatic clutch device, has manual and electric functions, and drives the rotor of the motor unit to continuously rotate at a certain rotating speed before the unit is flushed or stopped, so as to preheat the rotor and further solve the problem that the rotor is not uniformly heated to generate bending deformation; considering that the difference between the rotating speed output by a steam turbine and a motor and the rotating speed required by a boiler fan is large, the herringbone gear is adopted to meet the requirement of the system speed ratio, and compared with the traditional straight gear and helical gear, the herringbone gear has the advantages of high bearing capacity, stable work and low running noise; compared with the speed changer, the clutch or the speed change clutch which are independently arranged in some existing units, the integrated type full-automatic electric power station unit is more suitable for a thermal power plant induced draft fan and a desulfurization booster fan integrated modified unit, has high integration level, more complete functions and high bearing capacity, can be flexibly applied to high-speed and heavy-load working conditions, takes a 1030MW unit as an example, and is a full-automatic clutch device provided for the integrated type modified unit, the estimated power consumption of the plant can be reduced by 2-2.8% after the unit is put into operation, and the total annual electricity sales amount is increased by 132.54 multiplied by 106If the price of the electricity sold on the internet is 0.366 yuan/kWh, the annual income of electricity sale is increased4851 ten thousand yuan.
Drawings
FIG. 1 is a schematic structural diagram of a full-automatic clutch device for a lead-add-one transformation unit of the invention;
FIG. 2 is a layout diagram of a steam-electric driving and adding-in-one reforming unit.
Detailed Description
The first embodiment is as follows: the embodiment is described by combining fig. 1, and the full-automatic clutch device for the lead-increase-in-one reforming unit comprises an input connecting shaft 1, a transmission shaft 18, an output connecting shaft 11, a shell 14, a jigger 8, a pinion 5, a gearwheel 21 and a synchronous automatic clutch 17;
the input connecting shaft 1, the transmission shaft 18 and the output connecting shaft 11 are all arranged in the shell 14, the output connecting shaft 11 and the transmission shaft 18 are located on the same axis and are parallel to the input connecting shaft 1, the input connecting shaft 1 is horizontally arranged on the upper portion of the shell 14, the right end of the input connecting shaft 1 is coaxially connected with the jigger 8, the pinion 5 is fixed in the middle of the horizontally arranged input connecting shaft 1, the transmission shaft 18 and the output connecting shaft 11 are coaxially and sequentially and horizontally arranged on the lower portion of the shell 14 from left to right in sequence and are connected through the synchronous automatic clutch 17, the large gear 21 is fixed in the middle of the transmission shaft 18, and the pinion 5 is meshed.
In this embodiment, the left end of the input connecting shaft 1 is used as the input end a of the fully automatic clutch device, the right end of the output connecting shaft 11 is used as the output end B of the fully automatic clutch device, the input end a is a high-speed end, the output end B is a low-speed end,
the second embodiment is as follows: the embodiment is described by combining with fig. 1, and the full-automatic clutch device also comprises a bearing and a full-automatic clutch device for a lead-add-one transformation unit, wherein the right side of a transmission shaft 18 is connected with the end C of a synchronous automatic clutch 17, and the left side of an output connecting shaft 11 is connected with the end D of the synchronous automatic clutch 17; other embodiments are the same as the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 1, and a full-automatic clutch device for a lead-increase-integration transformation unit is characterized in that a first frame body 3, a second frame body 6 and a third frame body 13 are arranged in a casing 14, and the first frame body 3, the second frame body 6 and the third frame body 13 are sequentially and vertically fixed in the casing 14 from left to right; other embodiments are the same as the first embodiment.
The fourth concrete implementation mode: the embodiment is described by combining with figure 1, a full-automatic clutch device for a lead-increase-integration transformation unit, a first bearing 2 is arranged between the first frame body 3 and the input connecting shaft 1, a second bearing 7 is arranged between the second frame body 6 and the input connecting shaft 1, the left end of the input connecting shaft 1 is supported on the first frame body 3 through the first bearing 2, the right end of the input connecting shaft 1 is supported on the second frame body 6 through the second bearing 7, a third bearing 22 is arranged between the first frame body 3 and the transmission shaft 18, a fourth bearing 19 is arranged between the second frame body 6 and the transmission shaft 18, the left end of the transmission shaft 18 is supported on the first frame body 3 through the third bearing 22, the right end of the transmission shaft 18 is supported on the second frame body 6 through the fourth bearing 19, a fifth bearing 15 and a sixth bearing 12 are sequentially arranged between the third frame body 13 and the output connecting shaft 11 from left to right, and the output connecting shaft 11 is supported on the third frame body 13 through the fifth bearing 15 and the sixth bearing 12; other embodiments are the same as the first embodiment.
The fifth concrete implementation mode: in the embodiment described with reference to fig. 1, the third bearing 22 and the sixth bearing 12 are axial positioning bearings; other embodiments are the same as the first embodiment.
The sixth specific implementation mode: the embodiment is described with reference to fig. 1, and a full-automatic clutch device for a lead-increase reforming unit, wherein an oil inlet 4 and an oil outlet 20 are arranged outside the housing 14, and the height of the oil outlet 20 is lower than that of the oil inlet 4. Other embodiments are the same as the first embodiment.
The seventh embodiment: the embodiment is described with reference to fig. 1, and the full-automatic clutch device for the lead-increase integrated reforming unit further comprises an insulating coupling 10 and an asynchronous motor adapter flange 9, wherein the left end of the insulating coupling 10 is connected with the right end of an output connecting shaft 11 through a bolt, and the asynchronous motor adapter flange 9 is connected with the right end of the insulating coupling 10 through a bolt; other embodiments are the same as the first embodiment.
The specific implementation mode is eight: referring to fig. 1, the embodiment is described, in which a full-automatic clutch device for a lead-add-on reforming unit is provided, and a position detection sensor 16 is installed inside a housing 14; other embodiments are the same as the first embodiment, and the position detection sensor 16 is used for monitoring the clutch state of the fully automatic clutch device, feeding back the clutch state through an electric signal and displaying the clutch state on a computer.
The specific implementation method nine: the embodiment is described with reference to fig. 1, in which an insulation coupling 10 is a film disc coupling with insulation characteristics; other embodiments are the same as the first embodiment, the insulating coupling 9 is a membrane disc coupling and has insulating properties, so that not only can the thermal state expansion amount of a rotor in the running process of unit equipment be absorbed, but also a shaft current loop of the unit can be cut off, and the unit equipment is prevented from being damaged by electric corrosion.
In the present embodiment, the pinion gear 5 and the bull gear 21 are herringbone gears. The herringbone gear is used for meeting the requirement of a system speed ratio, and has the advantages of high bearing capacity, stable work and low running noise compared with the traditional straight gear and helical gear for transmitting power.
The working principle is as follows: describing the embodiment with reference to fig. 1-2, a steam turbine 23, a fully automatic clutch device 24, an asynchronous motor 25 and an induced draft fan 26 are coaxially arranged, the steam turbine 23 is connected with the high-speed end of the fully automatic clutch device 17, the low-speed end of the fully automatic clutch device 24 is connected with the asynchronous motor 25, and the asynchronous motor 25 is connected with the induced draft fan 26;
starting the unit to test, and selecting the induced draft fan 26 to be driven by the asynchronous motor 25 or the steam turbine 23 independently or the boiler fan to be driven by the asynchronous motor 25 and the steam turbine 23 together according to the operation condition of the unit;
when the system starts to operate, the asynchronous motor 25 is started first, the asynchronous motor 25 drives the output end D of the synchronous automatic clutch 17 to rotate through the asynchronous motor adapter flange 9, the insulating coupler 10 and the output connecting shaft 11, and meanwhile, the induced draft fan 26 is driven to have a certain load in an electric mode of the asynchronous motor 25;
when the load reaches a certain degree, the steam turbine 23 is accelerated to drive the input connecting shaft 1 of the full-automatic clutch device 17 to rotate, and simultaneously the input connecting shaft 1 drives the large gear 21 and the input end C of the synchronous automatic clutch 17 to rotate through the small gear 5; when the rotating speed of the input end C of the fully automatic clutch device 24 is greater than or equal to the rotating speed of the output end D, the synchronous automatic clutch 17 is engaged, the power of the steam turbine 23 is finally transmitted through the input connecting shaft 1, the pinion 5, the gearwheel 21, the synchronous automatic clutch 17 and the output connecting shaft 11, and at the moment, the asynchronous motor 25 can be switched from electric to power generation according to the load condition of the unit;
when the turbine 23 is stopped in a decelerating mode, the rotating speed of the input end C of the fully automatic clutch device 24 is lower than that of the output end D, the synchronous automatic clutch 17 is disengaged, and at the moment, the asynchronous motor 25 only drives the insulating coupler 12, the output connecting shaft 11 and the output end D of the synchronous automatic clutch 17 to rotate.
Claims (9)
1. A full-automatic clutch device for a lead-increase-in-one modification unit is characterized by comprising an input connecting shaft (1), a transmission shaft (18), an output connecting shaft (11), a shell (14), a jigger (8), a pinion (5), a bull gear (21) and a synchronous automatic clutch (17);
the input connecting shaft (1), the transmission shaft (18) and the output connecting shaft (11) are all arranged in the shell (14), the output connecting shaft (11) and the transmission shaft (18) are located on the same axis and are parallel to the input connecting shaft (1), the input connecting shaft (1) is horizontally arranged on the upper portion of the shell (14), the right end of the input connecting shaft (1) is coaxially connected with the jigger (8), the pinion (5) is fixed in the middle of the horizontally arranged input connecting shaft (1), the transmission shaft (18) and the output connecting shaft (11) are coaxially and sequentially horizontally arranged on the lower portion of the shell (14) from left to right and are connected through the synchronous automatic clutch (17), the gear wheel (21) is fixed in the middle of the transmission shaft (18), and the pinion (5) and the gear wheel (21) are meshed with each other.
2. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 1, is characterized in that: the right side of the transmission shaft (18) is connected with the C end of the synchronous automatic clutch (17), and the left side of the output connecting shaft (11) is connected with the D end of the synchronous automatic clutch (17).
3. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 1, is characterized in that: the frame body I (3), the frame body II (6) and the frame body III (13) are arranged in the shell (14), and the frame body I (3), the frame body II (6) and the frame body III (13) are sequentially and vertically fixed in the shell (14) from left to right.
4. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 3, characterized in that: a first bearing (2) is arranged between the first frame body (3) and the input connecting shaft (1), a second bearing (7) is arranged between the second frame body (6) and the input connecting shaft (1), the left end of the input connecting shaft (1) is supported on the first frame body (3) through the first bearing (2), the right end of the input connecting shaft (1) is supported on the second frame body (6) through the second bearing (7), a third bearing (22) is arranged between the first frame body (3) and the transmission shaft (18), a fourth bearing (19) is arranged between the second frame body (6) and the transmission shaft (18), the left end of the transmission shaft (18) is supported on the first frame body (3) through the third bearing (22), the right end of the transmission shaft (18) is supported on the second frame body (6) through the fourth bearing (19), a fifth bearing (15) and a sixth bearing (12) are sequentially arranged from left to right between the third frame body (13) and the output connecting shaft (11), the output connecting shaft (11) is supported on the third frame body (13) through a fifth bearing (15) and a sixth bearing (12).
5. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 4, is characterized in that: the third bearing (22) and the sixth bearing (12) are axial positioning bearings.
6. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 1, is characterized in that: an oil inlet (4) and an oil outlet (20) are formed in the outer portion of the shell (14), and the height of the oil outlet (20) is lower than that of the oil inlet (4).
7. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 1, is characterized in that: the full-automatic clutch device for the lead-increase integrated reforming unit further comprises an insulating coupler (10) and an asynchronous motor adapter flange (9), the left end of the insulating coupler (10) is connected with the right end of the output connecting shaft (11) through bolts, and the asynchronous motor adapter flange (9) is connected with the right end of the insulating coupler (10) through bolts.
8. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 1, is characterized in that: a position detection sensor (16) is mounted inside the housing (14).
9. The full-automatic clutch device for the lead-increase-in-one transforming machine set according to claim 7, is characterized in that: the insulation coupling (10) is a membrane disc coupling with insulation property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470864.4U CN210714790U (en) | 2019-09-05 | 2019-09-05 | Draw and increase unification and reform transform full-automatic clutch for unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470864.4U CN210714790U (en) | 2019-09-05 | 2019-09-05 | Draw and increase unification and reform transform full-automatic clutch for unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714790U true CN210714790U (en) | 2020-06-09 |
Family
ID=70966893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921470864.4U Active CN210714790U (en) | 2019-09-05 | 2019-09-05 | Draw and increase unification and reform transform full-automatic clutch for unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439632A (en) * | 2019-09-05 | 2019-11-12 | 哈尔滨广瀚动力传动有限公司 | One kind drawing increasing unification retrofitted unit full-automatic on-off device and application method |
-
2019
- 2019-09-05 CN CN201921470864.4U patent/CN210714790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439632A (en) * | 2019-09-05 | 2019-11-12 | 哈尔滨广瀚动力传动有限公司 | One kind drawing increasing unification retrofitted unit full-automatic on-off device and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11329583B2 (en) | Generalized frequency conversion system for steam turbine generator unit | |
| CN2924090Y (en) | Blast-furnace blower group of coaxial driven by coal-gas turbine and motor | |
| US8049353B1 (en) | Stackable generator arrangement | |
| CN105370598A (en) | Steam-electric double-drive shaft system structure of large axial flow fan of power station boiler | |
| CN210714790U (en) | Draw and increase unification and reform transform full-automatic clutch for unit | |
| CN205785808U (en) | Wind power generation gear case fault diagnosis simulated experiment platform | |
| CN204041128U (en) | A kind of blast furnace vapour drags standby fan generator set | |
| CN203616125U (en) | Closed transmission system of automobile drive axle performance testing stand | |
| CN201372819Y (en) | Coaxial driving power device for steam turbine engine | |
| NL2003264C2 (en) | Method for manufacturing a micro gas turbine. | |
| CN113551917A (en) | Semi-physical simulation test bed and test method for multi-machine parallel operation device of gas turbine | |
| WO2024002091A1 (en) | Full-power test platform and method for tandem double-wind-wheel wind turbine generator set | |
| CN201422054Y (en) | Coupling box provided with driving motor | |
| CN210714789U (en) | Circulating fan and turbine power generation coaxial unit for dry quenching device | |
| CN211550461U (en) | Multi-power speed reducer for well drilling | |
| CN204457895U (en) | By the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation | |
| CN211009174U (en) | Steam-electricity double-drive axial flow compressor and energy recovery turbine unit | |
| CN101876263A (en) | Afterheat steam utilization system | |
| CN209145935U (en) | A kind of direct-connected double drive type coaxial electrospinnings of high speed | |
| CN201696527U (en) | Variable speed clutch | |
| CN201858163U (en) | Power plant large-scale unit boiler feed pump novel main shaft driving system | |
| CN206860236U (en) | Low pressure monobloc forging optical axis rotor and steam turbine for steam turbine | |
| CN215979514U (en) | Steam energy utilization device | |
| CN206506411U (en) | A kind of Generalized Conversion system with fore pump | |
| CN211005453U (en) | Blast furnace three-unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |