CN104863968A - Turboset bearing bush oil retainer - Google Patents
Turboset bearing bush oil retainer Download PDFInfo
- Publication number
- CN104863968A CN104863968A CN201410723952.6A CN201410723952A CN104863968A CN 104863968 A CN104863968 A CN 104863968A CN 201410723952 A CN201410723952 A CN 201410723952A CN 104863968 A CN104863968 A CN 104863968A
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- ring
- flinger
- flinger ring
- inner ring
- oil retainer
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- Mounting Of Bearings Or Others (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to a turboset bearing bush oil retainer. The turboset bearing bush oil retainer comprises an oil retainer inner ring, an oil retainer outer ring, a positioning pin, an oil retainer combination surface (14) and a fastening screw (7). The oil retainer inner ring comprises an oil retainer inner ring upper and half section (2) and an oil retainer inner ring lower and half section (3). The oil retainer outer ring comprises an oil retainer outer ring upper and half section (1) and an oil retainer outer ring lower and half section (4). The turboset bearing bush oil retainer is characterized in that the fixed connection mode of the combination surface of the oil retainer inner ring upper and half section and the oil retainer inner ring lower and half section, namely the oil retainer combination surface (14) is designed to be a plugging fixed connection mode from a bolt connection fixation mode, namely, a crossette recessed groove (9) is arranged on the combination surface of the oil retainer inner ring upper and half section (2), correspondingly, a crossette (12) is arranged on the combination surface of the oil retainer inner ring lower and half section (3), and the positioning pin (10) preventing circumferential rotation is arranged on the oil retainer combination surface (14). The structure is simple, the turboset bearing bush oil retainer is safe to use, is convenient to install, and the intensity is high.
Description
Technical field
The present invention relates to steam turbine technology field, particularly a kind of steam turbine set bearing shell flinger ring.
Background technique
At present, electricity power enterprise's Turbo-generator Set often occurs in running because the problem of flinger ring or fault cause a watt axle for unit to shake in excessive, bearing housing the accidents such as different sound, tile kilning.Present stage, the sealing means that Turbo-generator Set both domestic and external or big-and-middle-sized rotating machine bush mechanical seal device normally adopt dynamic and static flinger ring to match, but due to the cylindrical body that static oil retainer ring is straight, the lubricant oil be splashed on stationary ring can not freely flow back into bottom bearing shell end cover inwall, makes the junction point of end cover and rotating shaft that leakage of oil or oil impregnate often occur; In addition, because dynamic and static flinger ring is steel body part, when make a connection vibration time, dynamic and static ring axle radial clearance zero or too small Spielpassung time can there is serious friction and cause damage.But investigation finds, the outer shroud locating stud breakage problem of electricity power enterprise's Turbo-generator Set emerged in operation flinger ring or fault cause a watt axle for unit to shake in excessive, bearing housing the accidents such as different sound, tile kilning often.Such as; run at each electricity power enterprise in whole nation unit operation in the investigation of 600MW Turbo-generator Set and find; flinger ring body is at operation produced problem; cardinal symptom is that an axle system watt unexpected axle shakes bigger than normal; different sound in bearing housing with metal knock; because the fracture of flinger ring inner ring or flinger ring junction plane clamping bolt come off in stopping process, make watt internal drop low, in coasting operation process, easily cause bearing shell burning problems.Could not solve this problem after repeatedly changing bearing shell flinger ring inner ring, this explanation is not the fault because installation quality causes.Measure through coordinating bearing shell flinger ring inner ring and flinger ring outer shroud, find that flinger ring inner ring radial detents exists some problems with flinger ring external loop diameter to the degree of depth that coordinates between locating stud, also can only extend the damage cycle although each power plant can take some measures and can not thoroughly solve.Therefore, how to solve during Turbo-generator Set is run and often occur that unexpected axle shakes bigger than normal, simultaneously with sound different in bearing housing, the accidents such as tile kilning have become problem in the urgent need to address at present.
Summary of the invention
The object of the invention is: in operation runs, often occur that unexpected axle shakes bigger than normal for existing such type above-mentioned, simultaneously with problems such as different sounds in bearing housing, bearing flinger ring inner ring ruptures, in flinger ring inner ring the second half year junction plane clamping bolt loosen, flinger ring outer shroud locating stud fracture etc. problem improve, further analysis is inquired into and is summed up, think that bearing shell flinger ring inner ring ruptures, the main cause that in locating stud fracture and flinger ring, ring combined face bolt gets loose etc. is that the radial fit position of flinger ring inner ring convex shoulder and flinger ring outer shroud locating stud is unreasonable, flinger ring outer shroud locating stud and flinger ring inner ring convex shoulder locating slot contact segment is less causes flinger ring inner ring to be stuck in flinger ring outer shroud locating stud bottom to cause flinger ring inner ring or flinger ring outer shroud locating stud to rupture, unit axle shakes increase, the series of problems such as different sound in watt, flinger ring inner ring upper and lower quasi integration face clamping bolt gets loose problem, because clamping bolt fails to reach flinger ring inner ring bearing capacity, in long-term unit operation under constantly vibration or under the sudden accident such as load rejection, clamping bolt is caused to loosen or come off, finally determine the technical pattern and the Placement that change ring combined face in flinger ring, thoroughly to solve this defect, design provides the form of ring combined face connection in flinger ring and the structure of flinger ring body radial location pin assembling, accurate accounting flinger ring inner ring weight suitably strengthens weight, structure is simple, meet design requirement, security of operation, can effectively avoid because flinger ring inner ring fault causes a unit watt axle to shake excessive, different sound in bearing housing, a kind of steam turbine set bearing shell flinger ring of the accidents such as tile kilning.
The technical solution adopted for the present invention to solve the technical problems is: it is characterized in that: a kind of steam turbine set bearing shell flinger ring, comprise flinger ring inner ring, flinger ring outer shroud, locating stud, flinger ring junction plane 14, fastening screw trip bolt 7, flinger ring inner ring comprises the flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3, flinger ring outer shroud comprises the flinger ring outer shroud first half 1 and flinger ring outer shroud Lower Half 4, flinger ring inner ring to be arranged in flinger ring outer shroud and to be fixedly connected with by fastening screw trip bolt 7, it is characterized in that: it is that grafting is fixedly connected with mode that the mode that is fixedly connected with of the flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3 two-part junction plane and flinger ring junction plane 14 is connected and fixed patten's design by bolt, namely convex shoulder groove 9 is set at the flinger ring inner ring first half 2 junction plane, correspondingly convex shoulder 12 is set at flinger ring inner ring Lower Half 3 junction plane, and, flinger ring junction plane 14 arranges the locating stud 10 preventing from rotating in a circumferential direction, location is connected by preventing the perforated pins 8 of locating stud 10 landing, simultaneously, cut off to damage for preventing perforated pins 8 and the groove width of the convex shoulder groove 9 in flinger ring inner ring is broadened, the width of piece bores place, the outer shroud location convex shoulder of corresponding increase bearing shell flinger ring outer shroud, as shown in figs. 1-11.
It is that grafting is fixedly connected with mode and can increases flinger ring inner ring weight that the mode that is fixedly connected with of the said flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3 two-part junction plane and flinger ring junction plane 14 is connected and fixed patten's design by bolt, again duplicate removal on the basis ensureing flinger ring intensity is taked in duplicate removal design, namely in calculating watt, can the oil pressure jack-up flinger ring that be in operation be formed after oil film, duplicate removal groove 15 is set in the centre of flinger ring inner ring, as shown in figs. 1-11.Here, it is that grafting is fixedly connected with mode and can increases flinger ring inner ring weight that the mode that is fixedly connected with due to flinger ring inner ring upper half part and second two-part junction plane and flinger ring junction plane 14 is connected and fixed patten's design by bolt, again after duplicate removal design, calculate chain rate former flinger ring inner ring weight in new bearing shell flinger ring, during specific design is produced, through adjust watt in oil pressure can be in operation jack-up bearing shell flinger ring formed oil film, take, on the basis ensureing bearing shell flinger ring intensity, power plant's security of operation can be met through duplicate removal design.Adjust this weight and can meet in operation the needs setting up oil film, the Security of unit can not be affected.Redesigning rear axle eaves tile oil ring inner ring weight change is mainly transforming in bearing shell flinger ring body process on the impact that shaft system of unit vibrates, the impact that after emphasis solves the transformation of bearing shell flinger ring inner ring, the change of weight is shaken on unit axle, after adjusting, unit axle can not be affected within the scope of 2 kilograms to shake problem, but can prerequisite is oil pressure in bearing shell be in operation jack-up flinger ring inner ring, sets up good oil film.Through practice, can the rear flinger ring inner ring weight change of transformation meet in operation sets up stable oil film, through designing the safe operation that can ensure flinger ring inner ring under oil group adjusts this weight, the safe operation of flinger ring inner ring can be ensured under the lubricant oil main-piping pressure of 0.1-0.14MPa, flinger ring inner ring coal wear problem can not be caused because of weight increase.The structural feature of this flinger ring determines this flinger ring and is equivalent to extremely narrow circular journal bearing, and its operating conditions is contrary with plain bearing, and plain bearing is lower watt of carrying, and this flinger ring is first carrying.The calculating of extremely narrow bearing bearing is now at home and abroad all without ripe computational methods, and result of calculation and actual motion state differ greatly, main cause be lubricant oil when width is little, its oil film composition is extremely complicated, and concrete modelling is very difficult.After the processing of this flinger ring, in existing operating unit, carry out installation testing, in the strict detection rotor vibration of duration of test, bearing shell vibration, watt temperature change etc., in monitoring bearing case, whether there is the appearance of the situations such as noise simultaneously.Through the operation of about a year, its rotor diameter of axle, bearing metal, flinger ring alloy etc. have no noticeable wear, and on flinger ring, stop pin, ring body structurc are stablized simultaneously, illustrate that unit is in running, set up good oil film between flinger ring and the rotor diameter of axle, flinger ring is working properly.In addition, selection is that inner ring selects special material to be combined with tungsten metallographic, is applicable to 300MW steam turbine set bearing shell flinger ring and improves, and certainly, also may be used for other steam turbine set bearing shell flinger ring and improves, such as 600MW steam turbine set bearing shell flinger ring improvement etc.
In the said flinger ring be made up of the flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3, ring design adopts diameter of axle gap to be 0.81-0.91 millimeter.
The beneficial effect of this technology is compared had feature with existing technology in other words and is: have structure simple, use safety, and be convenient to install, intensity is high.Specifically: 1, by solving the fracture of flinger ring inner ring after design improvement and junction plane connecting bolt gets loose strength problem; 2, to solve in operation because the fracture of flinger ring inner ring and junction plane connecting bolt come off and cause shaft system of unit localized vibration to exceed standard by design improvement, threaten the problem of unit safety operation; 3, eliminate because of flinger ring inner ring 1 junction plane bolt run get loose or flinger ring inner ring rupture suddenly after fragment too much cause unit damage serious accident occur hidden danger; 4, through experimental verification, flinger ring inner ring is in operation and can sets up good oil film, oil film can not cannot be set up and the coal that weares and teares because of weight increase, but, every platform Transformation of Unit flinger ring body, quantity is different, and the running state of every cover watt also there are differences, and needs the test through a turn(a)round to confirm whether have problems.Integral replacing is wanted in suggestion.
Accompanying drawing explanation
Fig. 1 is overall plan view of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the plan view of Fig. 1.
Fig. 4 is the D partial enlarged view of Fig. 2.
Fig. 5 is outer shroud plan view of the present invention.
Fig. 6 is outer shroud B-B sectional view of the present invention.
Fig. 7 is outer shroud C-C sectional view of the present invention.
Fig. 8 is inner ring plan view of the present invention.
Fig. 9 is inner ring right elevation of the present invention.
Figure 10 is inner ring plan view of the present invention.
Figure 11 is inner ring E partial enlarged drawing of the present invention.
In figure: the 1 flinger ring outer shroud first half (or being called the bearing shell flinger ring outer shroud first half), the 2 flinger ring inner ring first halves (or being called the bearing shell flinger ring inner ring first half), 3 flinger ring inner ring Lower Halves (or being called bearing shell flinger ring inner ring Lower Half), 4 flinger ring outer shroud Lower Halves (or being called bearing shell flinger ring outer shroud Lower Half), 5 fixed holes, 6 oil drainage holes, 7 fastening screw trip bolts, 8 perforated pins, 9 convex shoulder grooves (flinger ring inner ring convex shoulder positioning groove), 10 locating studs, 11 pinned holes, 12 convex shoulders (flinger ring inner ring convex shoulder), 13 positioning pin holes, 14 flinger ring junction planes, 15 duplicate removal grooves.
Embodiment
The specific embodiment of the present invention, as shown in figs. 1-11, a kind of steam turbine set bearing shell flinger ring, comprise flinger ring inner ring, flinger ring outer shroud, locating stud, flinger ring junction plane 14, fastening screw trip bolt 7, flinger ring inner ring comprises the flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3, flinger ring outer shroud comprises the flinger ring outer shroud first half 1 and flinger ring outer shroud Lower Half 4, flinger ring inner ring to be arranged in flinger ring outer shroud and to be fixedly connected with by fastening screw trip bolt 7, it is characterized in that: it is that grafting is fixedly connected with mode that the mode that is fixedly connected with of the flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3 two-part junction plane and flinger ring junction plane 14 is connected and fixed patten's design by bolt, namely convex shoulder groove 9 is set at the flinger ring inner ring first half 2 junction plane, correspondingly convex shoulder 12 is set at flinger ring inner ring Lower Half 3 junction plane, and, flinger ring junction plane 14 arranges the locating stud 10 preventing from rotating in a circumferential direction, location is connected by preventing the perforated pins 8 of locating stud 10 landing, simultaneously, cut off to damage for preventing perforated pins 8 and the groove width of the convex shoulder groove 9 in flinger ring inner ring is broadened, the width of piece bores place, the outer shroud location convex shoulder of corresponding increase bearing shell flinger ring outer shroud, as shown in figs. 1-11.
It is that grafting is fixedly connected with mode and can increases flinger ring inner ring weight that the mode that is fixedly connected with of the said flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3 two-part junction plane and flinger ring junction plane 14 is connected and fixed patten's design by bolt, again duplicate removal on the basis ensureing flinger ring intensity is taked in duplicate removal design, namely in calculating watt, can the oil pressure jack-up flinger ring that be in operation be formed after oil film, duplicate removal groove 15 is set in the centre of flinger ring inner ring, as shown in figs. 1-11.Here, it is that grafting is fixedly connected with mode and can increases flinger ring inner ring weight that the mode that is fixedly connected with due to flinger ring inner ring upper half part and second two-part junction plane and flinger ring junction plane 14 is connected and fixed patten's design by bolt, again after duplicate removal design, calculate chain rate former flinger ring inner ring weight in new bearing shell flinger ring, during specific design is produced, through adjust watt in oil pressure can be in operation jack-up bearing shell flinger ring formed oil film, take, on the basis ensureing bearing shell flinger ring intensity, power plant's security of operation can be met through duplicate removal design.Adjust this weight and can meet in operation the needs setting up oil film, the Security of unit can not be affected.Redesigning rear axle eaves tile oil ring inner ring weight change is mainly transforming in bearing shell flinger ring body process on the impact that shaft system of unit vibrates, the impact that after emphasis solves the transformation of bearing shell flinger ring inner ring, the change of weight is shaken on unit axle, after adjusting, unit axle can not be affected within the scope of 2 kilograms to shake problem, but can prerequisite is oil pressure in bearing shell be in operation jack-up flinger ring inner ring, sets up good oil film.Through practice, can the rear flinger ring inner ring weight change of transformation meet in operation sets up stable oil film, through designing the safe operation that can ensure flinger ring inner ring under oil group adjusts this weight, the safe operation of flinger ring inner ring can be ensured under the lubricant oil main-piping pressure of 0.1-0.14MPa, flinger ring inner ring coal wear problem can not be caused because of weight increase.The structural feature of this flinger ring determines this flinger ring and is equivalent to extremely narrow circular journal bearing, and its operating conditions is contrary with plain bearing, and plain bearing is lower watt of carrying, and this flinger ring is first carrying.The calculating of extremely narrow bearing bearing is now at home and abroad all without ripe computational methods, and result of calculation and actual motion state differ greatly, main cause be lubricant oil when width is little, its oil film composition is extremely complicated, and concrete modelling is very difficult.After the processing of this flinger ring, in existing operating unit, carry out installation testing, in the strict detection rotor vibration of duration of test, bearing shell vibration, watt temperature change etc., in monitoring bearing case, whether there is the appearance of the situations such as noise simultaneously.Through the operation of about a year, its rotor diameter of axle, bearing metal, flinger ring alloy etc. have no noticeable wear, and on flinger ring, stop pin, ring body structurc are stablized simultaneously, illustrate that unit is in running, set up good oil film between flinger ring and the rotor diameter of axle, flinger ring is working properly.In addition, selection is that inner ring selects special material to be combined with tungsten metallographic, is applicable to 300MW steam turbine set bearing shell flinger ring and improves, and certainly, also may be used for other steam turbine set bearing shell flinger ring and improves, such as 600MW steam turbine set bearing shell flinger ring improvement etc.
In the said flinger ring be made up of the flinger ring inner ring first half 2 and flinger ring inner ring Lower Half 3, ring design adopts diameter of axle gap to be 0.81-0.91 millimeter.
Claims (3)
1. a steam turbine set bearing shell flinger ring, comprise flinger ring inner ring, flinger ring outer shroud, locating stud, flinger ring junction plane (14), fastening screw trip bolt (7), flinger ring inner ring comprises the flinger ring inner ring first half (2) and flinger ring inner ring Lower Half (3), flinger ring outer shroud comprises the flinger ring outer shroud first half (1) and flinger ring outer shroud Lower Half (4), flinger ring inner ring to be arranged in flinger ring outer shroud and to be fixedly connected with by fastening screw trip bolt (7), it is characterized in that: it is that grafting is fixedly connected with mode that the mode that is fixedly connected with of the flinger ring inner ring first half (2) and flinger ring inner ring Lower Half (3) two-part junction plane and flinger ring junction plane (14) is connected and fixed patten's design by bolt, namely convex shoulder groove (9) is set at the flinger ring inner ring first half (2) junction plane, correspondingly convex shoulder (12) is set at flinger ring inner ring Lower Half (3) junction plane, and, the locating stud (10) rotated in a circumferential direction is prevented in the upper setting of flinger ring junction plane (14), location is connected by preventing the perforated pins (8) of locating stud (10) landing, simultaneously, cut off to damage for preventing perforated pins (8) and the groove width of the convex shoulder groove (9) in flinger ring inner ring is broadened, the width of piece bores place, the outer shroud location convex shoulder of corresponding increase bearing shell flinger ring outer shroud.
2. a kind of steam turbine set bearing shell flinger ring as claimed in claim 1, it is characterized in that: it is that grafting is fixedly connected with mode and can increases flinger ring inner ring weight that the mode that is fixedly connected with of the said flinger ring inner ring first half (2) and flinger ring inner ring Lower Half (3) two-part junction plane and flinger ring junction plane (14) is connected and fixed patten's design by bolt, again duplicate removal on the basis ensureing flinger ring intensity is taked in duplicate removal design, namely in calculating watt, can the oil pressure jack-up flinger ring that be in operation be formed after oil film, arranges duplicate removal groove (15) in the centre of flinger ring inner ring.
3. a kind of steam turbine set bearing shell flinger ring as claimed in claim 1 or 2, is characterized in that: in the said flinger ring be made up of the flinger ring inner ring first half (2) and flinger ring inner ring Lower Half (3), ring design adopts diameter of axle gap to be 0.81-0.91 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723952.6A CN104863968B (en) | 2014-12-04 | 2014-12-04 | Bearing bush oil retainer ring of steam turbine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723952.6A CN104863968B (en) | 2014-12-04 | 2014-12-04 | Bearing bush oil retainer ring of steam turbine set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863968A true CN104863968A (en) | 2015-08-26 |
| CN104863968B CN104863968B (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410723952.6A Active CN104863968B (en) | 2014-12-04 | 2014-12-04 | Bearing bush oil retainer ring of steam turbine set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104863968B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644795A (en) * | 2016-09-23 | 2017-05-10 | 上海交通大学 | Testing machine for abrasive wear test of bearing bush |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2177096Y (en) * | 1993-09-16 | 1994-09-14 | 哈尔滨电站改造高新技术应用公司 | Floating oil scraper ring for steam turbine |
| CN2532298Y (en) * | 2002-04-04 | 2003-01-22 | 姚传贤 | Engineering plastics float bush for rotary slurry type hydroturbine lubricant receiver |
| JP2004360737A (en) * | 2003-06-02 | 2004-12-24 | Nsk Ltd | Rotation lock member, and bearing device provided with rotation lock member |
| US20090302543A1 (en) * | 2008-06-09 | 2009-12-10 | General Electric Company | Sealing systems for rotary machines and methods for modification |
| CN102269224A (en) * | 2011-08-01 | 2011-12-07 | 扬州尼尔工程塑料有限公司 | Bearing cover |
| CN202203282U (en) * | 2011-07-16 | 2012-04-25 | 黄浩杨 | Oil ring structure |
| CN204344695U (en) * | 2014-12-04 | 2015-05-20 | 哈尔滨三源汽轮机设备制造有限责任公司 | A kind of steam turbine set bearing shell flinger ring |
-
2014
- 2014-12-04 CN CN201410723952.6A patent/CN104863968B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177096Y (en) * | 1993-09-16 | 1994-09-14 | 哈尔滨电站改造高新技术应用公司 | Floating oil scraper ring for steam turbine |
| CN2532298Y (en) * | 2002-04-04 | 2003-01-22 | 姚传贤 | Engineering plastics float bush for rotary slurry type hydroturbine lubricant receiver |
| JP2004360737A (en) * | 2003-06-02 | 2004-12-24 | Nsk Ltd | Rotation lock member, and bearing device provided with rotation lock member |
| US20090302543A1 (en) * | 2008-06-09 | 2009-12-10 | General Electric Company | Sealing systems for rotary machines and methods for modification |
| CN202203282U (en) * | 2011-07-16 | 2012-04-25 | 黄浩杨 | Oil ring structure |
| CN102269224A (en) * | 2011-08-01 | 2011-12-07 | 扬州尼尔工程塑料有限公司 | Bearing cover |
| CN204344695U (en) * | 2014-12-04 | 2015-05-20 | 哈尔滨三源汽轮机设备制造有限责任公司 | A kind of steam turbine set bearing shell flinger ring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644795A (en) * | 2016-09-23 | 2017-05-10 | 上海交通大学 | Testing machine for abrasive wear test of bearing bush |
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| CN104863968B (en) | 2020-10-02 |
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Inventor after: Fu Yun Jie Inventor after: Zhang Penglin Inventor after: Kang Baolai Inventor after: Wang Tao Inventor after: Cao Zhen Inventor before: Fu Yun Jie Inventor before: Liu Yuxin Inventor before: Song Jisheng Inventor before: Ma Yuanqi Inventor before: Wang Jiayong Inventor before: Fan Shijie |
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Effective date of registration: 20221128 Address after: 150038 xizha village, Xingfu Town, Xiangfang District, Harbin City, Heilongjiang Province Patentee after: Harbin Sanyuan Power Station Complete Equipment Manufacturing Co.,Ltd. Address before: 150038 Harbin Sanyuan Turbine Equipment Manufacturing Co., Ltd., Xizua Village, Xingfu Town, Xiangfang District, Harbin, Heilongjiang Patentee before: HARBIN SANYUAN TURBINE EQUIPMENT MANUFACTURING CO.,LTD. |