CN114607467A - 50MW reaction type back pressure air turbine - Google Patents

50MW reaction type back pressure air turbine Download PDF

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Publication number
CN114607467A
CN114607467A CN202210335208.3A CN202210335208A CN114607467A CN 114607467 A CN114607467 A CN 114607467A CN 202210335208 A CN202210335208 A CN 202210335208A CN 114607467 A CN114607467 A CN 114607467A
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CN
China
Prior art keywords
air
bearing box
cylinder
back pressure
air cylinder
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.)
Pending
Application number
CN202210335208.3A
Other languages
Chinese (zh)
Inventor
徐殿吉
翁振宇
周俊方
邢冠一
赵洪羽
翟彦凯
张春秀
潘春雨
徐鹏
余海鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Turbine Co Ltd
Hadian Power Equipment National Engineering Research Center Co Ltd
Original Assignee
Harbin Turbine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin Turbine Co Ltd filed Critical Harbin Turbine Co Ltd
Priority to CN202210335208.3A priority Critical patent/CN114607467A/en
Publication of CN114607467A publication Critical patent/CN114607467A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02Blade-carrying members, e.g. rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00Regulating or controlling by varying flow
    • F01D17/10Final actuators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08Cooling; Heating; Heat-insulation
    • F01D25/12Cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08Cooling; Heating; Heat-insulation
    • F01D25/14Casings modified therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162Bearing supports
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24Casings; Casing parts, e.g. diaphragms, casing fastenings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28Supporting or mounting arrangements, e.g. for turbine casing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/14Form or construction
    • F01D5/147Construction, i.e. structural features, e.g. of weight-saving hollow blades

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The invention relates to the field of air turbines, in particular to a 50MW reaction type back pressure air turbine, which solves the problem that the existing air turbine equipment cannot adapt to the further commercialization requirement of a compressed air energy storage system, and comprises a front bearing box, a rear bearing box and an air cylinder, wherein the front bearing box and the rear bearing box are arranged on two sides of the air cylinder, the air turbine further comprises a base frame, the front bearing box and the rear bearing box are both arranged on the base frame, four corners of the air cylinder are respectively arranged on the front bearing box or the rear bearing box through a cat claw, the lower part of the front end of the air cylinder is connected with the front bearing box through a push-pull rod structure, the lower part of the rear end of the air cylinder is connected with the rear bearing box through a centering beam structure, an exhaust pipeline of the air cylinder is arranged on the lower part of the rear end of the air cylinder, two air inlets are arranged on the air cylinder, each air inlet is connected with an air inlet valve, and each air inlet valve is connected to the base through a bracket, the material selection of each part of the turbine is reasonable, and the method can be applied to the afterburning type compressed air energy storage project.

Description

50MW reaction type back pressure air turbine
Technical Field
The invention relates to the field of air turbines, in particular to a 50MW reaction type back pressure air turbine.
Background
Compressed air energy storage is a novel energy storage technology, is in the brisk development stage, and air turbine is compressed air energy storage system's important equipment, and the demand that current air turbine equipment can't adapt to compressed air energy storage system further commercialization urgently needs to develop an air turbine equipment that structural design is reasonable, level efficiency and circulation efficiency are high in order to satisfy compressed air energy storage system's operation demand.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problem that the existing air turbine equipment cannot adapt to the further commercialization demand of a compressed air energy storage system, a 50MW reaction type back pressure air turbine is provided.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a 50MW reaction type back pressure air turbine, it includes front bearing case, rear bearing case and cylinder, and front bearing case and rear bearing case are installed in the both sides of cylinder, and it still includes the bed frame, and front bearing case and rear bearing case all set up on the bed frame, and the bed frame is fixed on the basis, and the four corners of cylinder is equipped with a cat claw respectively, and every cat claw is installed on front bearing case or rear bearing case, cylinder front end lower part is connected with front bearing case through the push-and-pull rod structure, and cylinder rear end lower part is connected with the rear bearing case through centering beam structure, and the exhaust duct of cylinder sets up the lower part in the cylinder rear end, be equipped with two air inlets on the cylinder, two air inlets tangential are arranged on the cylinder, and every air inlet is connected with an air inlet valve, and every air inlet valve is connected to the basis through a support.
Further, the cylinder is of a single-cylinder structure.
Still further, the intake valve is a combined primary air regulating valve.
Further, two air inlets are evenly distributed on the side portion of the cylinder along the circumference, and the two air inlets are horizontally arranged.
And furthermore, a rotor is arranged in the cylinder, the front end of the rotor is connected with a front end bearing in the front bearing box, and the rear end of the rotor is connected with a rear end bearing in the rear bearing box.
Furthermore, the front end bearing is a thrust support combined bearing, and the rear end bearing is a support bearing.
Still further, the rear bearing box is connected with the base frame through a positioning key.
Furthermore, the push-pull rod structure comprises a plurality of push-pull rods, annular grooves are formed in two ends of each push-pull rod, one end of each push-pull rod is embedded into the front bearing box, and the other end of each push-pull rod is embedded into the air cylinder.
Still further, the centering beam structure comprises an I-beam and a plurality of bolts, wherein one end of the I-beam is connected with the cylinder through the plurality of bolts, and the other end of the I-beam is connected with the rear bearing box through the plurality of bolts.
Further, a cooling air inlet is formed in the top of the front end of the cylinder.
Has the advantages that:
materials of all parts of the turbine are reasonably selected, and the characteristics of a high-temperature air working medium are fully considered, wherein the cylinder is made of improved 12% Cr martensitic stainless heat-resistant cast steel, so that various components in the air working medium can be effectively prevented from corroding parts in a high-temperature environment, the turbine can be applied to the high-temperature air working medium, and further the application to a afterburning type compressed air energy storage project is realized;
the top of the front end of the cylinder is provided with a cooling air inlet, and the turbine is cooled by adopting an end air seal, so that the inlet air temperature can reach more than 500 ℃;
the turbine through flow adopts a high-efficiency reaction type design, so that the flow efficiency is fundamentally improved;
the turbine adopts the design of individual layer jar, and the inflation is even, guarantees under the efficient prerequisite, and the unit can be realized frequently opening by the clearance of suitable increase sound portion cover and stops, improves the turbine flexibility.
The turbine working medium is high-temperature air, and firstly, compared with the traditional steam turbine, the working medium has more complex components and higher selection requirements on materials of all parts of a unit; secondly, the method is applied to a compressed air energy storage project, the air turbine needs to be started and stopped frequently, and higher requirements are provided for the starting and stopping flexibility, the operation safety and reliability and the overhaul and maintenance convenience of the turbine; finally, since the intake air is high temperature air, the intake side air seal needs to be specially designed. Finally, the 50MW reaction type back pressure air turbine is advanced energy conversion equipment which is suitable for high-temperature air working media and a compressed air energy storage system, has the characteristics of high efficiency, flexibility and safety, and can effectively improve market competitiveness.
Drawings
FIG. 1 is a schematic illustration of a 50MW reaction back pressure air turbine of the present invention;
FIG. 2 is a schematic longitudinal partial cross-section of the present invention;
FIG. 3 is a side schematic view of the cylinder of the present invention;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is a schematic view of a push-pull rod configuration;
FIG. 6 is a schematic view of a centering beam configuration;
FIG. 7 is a schematic diagram of a 50MW reaction back pressure air turbine of the present invention.
Detailed Description
The first embodiment is as follows: a50 MW reaction type back pressure air turbine comprises a front bearing box 3, a rear bearing box 4 and an air cylinder 1, wherein the front bearing box 3 and the rear bearing box 4 are arranged on two sides of the air cylinder 1, the air turbine also comprises a base frame 9, the front bearing box 3 and the rear bearing box 4 are both arranged on the base frame 9, the base frame 9 is fixed on a foundation, four corners of the air cylinder 1 are respectively provided with a cat claw 10, each cat claw 10 is arranged on the front bearing box 3 or the rear bearing box 4, the lower part of the front end of the air cylinder 1 is connected with the front bearing box 3 through a push-pull rod structure 11, the lower part of the rear end of the air cylinder 1 is connected with the rear bearing box 4 through a centering beam structure 12, an exhaust pipeline 1-1 of the air cylinder 1 is arranged on the lower part of the rear end of the air cylinder 1, the air cylinder 1 is provided with two air inlets 1-2, the two air inlets 1-2 are tangentially arranged on the air cylinder 1, and each air inlet 1-2 is connected with an air inlet valve 7, each intake valve 7 is connected to the base by a bracket 8.
In the present embodiment: the front bearing box and the rear bearing box are supported on the base frame by adopting a floor structure, and the high-pressure cylinder adjusting end and the electric end are respectively supported on one of the front bearing box or the rear bearing box through the cat claws. The front bearing box and the cylinder adopt a push-pull rod structure, the rear bearing box and the cylinder adopt a centering beam structure, and the front bearing box and the cylinder are fastened and positioned by bolts and positioning pins, so that the cylinder can keep correct axial and transverse positions relative to the bearing seat. The arrangement mode can realize synchronous axial movement between the bearing box and the cylinder in various operation working conditions such as starting and stopping of the unit.
The second embodiment is as follows: a50 MW reaction type back pressure air turbine, wherein a cylinder 1 is of a single-cylinder structure.
In the present embodiment: the unit adopts a single-cylinder single-exhaust arrangement, adopts a single-layer cylinder structure, and has the advantages of simple structure, small expansion difference and flexible start and stop.
Other embodiments are the same as the first embodiment.
The third concrete implementation mode: the inlet valve 7 is a main air regulating combination valve.
In the present embodiment: the device adopts a design without an air duct, an air inlet valve is directly connected with the cylinder through a flange, main steam enters the cylinder after entering a main air regulation joint valve, and flows out of an exhaust pipeline positioned at the lower part of the cylinder after flowing through a high-pressure part and flowing through;
other embodiments are the same as the first embodiment.
The fourth concrete implementation mode is as follows: a50 MW reaction type back pressure air turbine, the two air inlets are evenly distributed on the side part of a cylinder 1 along the circumference, and the two air inlets are horizontally arranged.
In the present embodiment: two air inlets are uniformly distributed on the side part of the cylinder 1 along the circumference, the two air inlets are horizontally arranged, the two air inlets form a 2 multiplied by 180 degree tangential air inlet structure, and the pneumatic efficiency is high.
Other embodiments are the same as the first embodiment.
The fifth concrete implementation mode: a50 MW reaction type back pressure air turbine is characterized in that a rotor 2 is arranged in a cylinder 1, the front end of the rotor 2 is connected with a front end bearing 5 in a front bearing box 3, and the rear end of the rotor 2 is connected with a rear end bearing 6 in a rear bearing box 4.
Other embodiments are the same as the first embodiment.
The sixth specific implementation mode: a50 MW reaction type back pressure air turbine is characterized in that a front end bearing 5 is a thrust support combined bearing, and a rear end bearing 6 is a support bearing.
In the present embodiment: the relative expansion dead center of the air turbine rotor is designed at the thrust bearing of the front bearing box. During operation, the air cylinder expands towards the adjusting end, the air cylinder pushes the front bearing box to slide through the push-pull rod, and the air turbine rotor expands towards the two ends by taking the thrust bearing as a center.
The other embodiments are the same as the fifth embodiment.
The seventh embodiment: a50 MW reaction type back pressure air turbine, the rear bearing box 4 is connected with a base frame 9 through a positioning key.
In the present embodiment: the absolute dead point of the unit is designed on the rear bearing box, and is positioned on the base frame by a positioning key (a transverse key 13) and is the expansion absolute dead point of the whole unit.
Other embodiments are the same as the first embodiment.
The specific implementation mode is eight: the utility model provides a 50MW reaction back pressure type air turbine, push-and-pull rod structure 11 includes a plurality of push-and-pull rods, the both ends of push-and-pull rod all are equipped with the ring channel, and the one end embedding front bearing case 3 of push-and-pull rod sets up, and the other end embedding cylinder 1 of push-and-pull rod sets up.
Other embodiments are the same as the first embodiment.
The specific implementation method nine: a50 MW reaction type back pressure air turbine is characterized in that a centering beam structure 12 comprises an I-shaped beam and a plurality of bolts, one end of the I-shaped beam is connected with a cylinder 1 through the plurality of bolts, and the other end of the I-shaped beam is connected with a rear bearing box 4 through the plurality of bolts.
Other embodiments are the same as the first embodiment.
The detailed implementation mode is ten: a50 MW reaction type back pressure air turbine, the top of the front end of the cylinder 1 is provided with a cooling air inlet 14.
Other embodiments are the same as the first embodiment.
Other embodiments are as follows: the cylinder 1 is made of 12% Cr martensitic stainless heat-resistant cast steel.
All the static blades and the movable blades adopt pre-twisted assembly type structures, and the assembly type structures have no welding seams, so that welding deformation is avoided, and the through-flow precision is better ensured.
The working principle is as follows:
the front bearing box and the rear bearing box of the embodiment are supported on the base frame by adopting a floor structure, and the high-pressure cylinder adjusting end and the electric end are respectively supported on the front bearing box and the rear bearing box by the lower cat claws. The front bearing box and the cylinder adopt a push-pull rod structure, the rear bearing box and the cylinder adopt a centering beam structure, and the front bearing box and the cylinder are fastened and positioned by bolts and positioning pins, so that the cylinder can keep a correct axial position and a correct transverse position relative to a bearing seat. The arrangement mode can realize synchronous axial movement between the bearing box and the cylinder in various operation working conditions such as starting and stopping of the unit.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a 50MW reaction back pressure type air turbine, it includes front bearing case (3), rear bearing case (4) and cylinder (1), and the both sides at cylinder (1) are installed in front bearing case (3) and rear bearing case (4), its characterized in that: the novel air cylinder is characterized by further comprising a base frame (9), wherein the front bearing box (3) and the rear bearing box (4) are arranged on the base frame (9), the base frame (9) is fixed on a base, four corners of the air cylinder (1) are respectively provided with a cat claw (10), each cat claw (10) is installed on the front bearing box (3) or the rear bearing box (4), the lower part of the front end of the air cylinder (1) is connected with the front bearing box (3) through a push-pull rod structure (11), the lower part of the rear end of the air cylinder (1) is connected with the rear bearing box (4) through a centering beam structure (12), an exhaust pipeline (1-1) of the air cylinder (1) is arranged on the lower part of the rear end of the air cylinder (1), the air cylinder (1) is provided with two air inlets (1-2), the two air inlets (1-2) are tangentially arranged on the air cylinder (1), and each air inlet (1-2) is connected with an air inlet valve (7), each intake valve (7) is connected to the base by a bracket (8).
2. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the cylinder (1) is of a single-cylinder structure.
3. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the air inlet valve (7) is a main air regulation combined valve.
4. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the two air inlets (1-2) are uniformly distributed on the side part of the air cylinder (1) along the circumference, and the two air inlets (1-2) are horizontally arranged.
5. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the air cylinder (1) is internally provided with a rotor (2), the front end of the rotor (2) is connected with a front end bearing (5) in the front bearing box (3), and the rear end of the rotor (2) is connected with a rear end bearing (6) in the rear bearing box (4).
6. A50 MW reaction back pressure air turbine according to claim 5, wherein: the front end bearing (5) is a thrust support combined bearing, and the rear end bearing (6) is a support bearing.
7. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the rear bearing box (4) is connected with the base frame (9) through a positioning key.
8. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the push-pull rod structure (11) comprises a plurality of push-pull rods, annular grooves are formed in the two ends of each push-pull rod, one ends of the push-pull rods are embedded into the front bearing box (3), and the other ends of the push-pull rods are embedded into the air cylinder (1).
9. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: the centering beam structure (12) comprises an I-beam and a plurality of bolts, one end of the I-beam is connected with the cylinder (1) through the bolts, and the other end of the I-beam is connected with the rear bearing box (4) through the bolts.
10. A 50MW reaction back pressure air turbine as claimed in claim 1 wherein: and a cooling air inlet (14) is formed in the top of the front end of the air cylinder (1).
CN202210335208.3A 2022-03-31 2022-03-31 50MW reaction type back pressure air turbine Pending CN114607467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210335208.3A CN114607467A (en) 2022-03-31 2022-03-31 50MW reaction type back pressure air turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210335208.3A CN114607467A (en) 2022-03-31 2022-03-31 50MW reaction type back pressure air turbine

Publications (1)

Publication Number Publication Date
CN114607467A true CN114607467A (en) 2022-06-10

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206592160U (en) * 2017-04-06 2017-10-27 哈尔滨汽轮机厂有限责任公司 A kind of bearing housing console mode Blast Furnace Gas Turbine unit
CN109026206A (en) * 2018-07-19 2018-12-18 哈尔滨汽轮机厂有限责任公司 It is a kind of with spiral case into the integral high pressure nuclear steam turbine of vapour formula high-pressure inner cylinder
CN111911244A (en) * 2020-06-29 2020-11-10 东方电气集团东方汽轮机有限公司 Multi-cylinder air turbine unit
CN112343675A (en) * 2020-11-25 2021-02-09 哈尔滨汽轮机厂有限责任公司 25 MW-grade high-rotating-speed steam extraction condensing steam turbine
CN113464219A (en) * 2021-08-03 2021-10-01 哈尔滨汽轮机厂有限责任公司 45MW ultrahigh pressure reaction type back pressure steam turbine
WO2021218526A1 (en) * 2020-04-29 2021-11-04 Han Ding Pneumatic engine
CN216788486U (en) * 2022-03-31 2022-06-21 哈尔滨汽轮机厂有限责任公司 50MW reaction type back pressure air turbine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206592160U (en) * 2017-04-06 2017-10-27 哈尔滨汽轮机厂有限责任公司 A kind of bearing housing console mode Blast Furnace Gas Turbine unit
CN109026206A (en) * 2018-07-19 2018-12-18 哈尔滨汽轮机厂有限责任公司 It is a kind of with spiral case into the integral high pressure nuclear steam turbine of vapour formula high-pressure inner cylinder
WO2021218526A1 (en) * 2020-04-29 2021-11-04 Han Ding Pneumatic engine
CN111911244A (en) * 2020-06-29 2020-11-10 东方电气集团东方汽轮机有限公司 Multi-cylinder air turbine unit
CN112343675A (en) * 2020-11-25 2021-02-09 哈尔滨汽轮机厂有限责任公司 25 MW-grade high-rotating-speed steam extraction condensing steam turbine
CN113464219A (en) * 2021-08-03 2021-10-01 哈尔滨汽轮机厂有限责任公司 45MW ultrahigh pressure reaction type back pressure steam turbine
CN216788486U (en) * 2022-03-31 2022-06-21 哈尔滨汽轮机厂有限责任公司 50MW reaction type back pressure air turbine

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Effective date of registration: 20230106

Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province

Applicant after: HARBIN TURBINE Co.,Ltd.

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Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin

Applicant before: HARBIN TURBINE Co.,Ltd.