CN114412593A - Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembling method - Google Patents
Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembling method Download PDFInfo
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- CN114412593A CN114412593A CN202111561914.1A CN202111561914A CN114412593A CN 114412593 A CN114412593 A CN 114412593A CN 202111561914 A CN202111561914 A CN 202111561914A CN 114412593 A CN114412593 A CN 114412593A
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- guide key
- key body
- wear
- oxidation
- resistant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/005—Selecting particular materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a wear-resistant and oxidation-resistant guide key structure, a sliding pin system and an assembly method, and belongs to the technical field of turbine sliding pin systems; the structure comprises a guide key body used in the steam turbine set, wherein the upper side surface of the guide key body is also provided with a chip collecting groove for collecting impurities and rusty materials, the guide key body is of a long strip-shaped structure, and the side surfaces of two end parts of the guide key body are arc surfaces; the guide key structure solves the problems that the traditional guide key structure is not wear-resistant and short in service life, effectively improves the problem that the traditional cuboid structure is easy to deform when colliding at corners through the design of the inverted arc surface structures at the two end parts, effectively reduces the friction condition between the guide key and the bearing box body, effectively collects impurities falling from the bottom of the bearing box by means of the design of the chip collecting grooves, avoids entering a gap between the side surface of the guide key and the bearing box, avoids influences caused by the impurities, and effectively prolongs the service life of the guide key and the like.
Description
Technical Field
The invention relates to a wear-resistant and oxidation-resistant guide key structure, a sliding pin system and an assembly method, and belongs to the technical field of turbine sliding pin systems.
Background
The sliding pin system is an important part which ensures that the cylinder and the bearing box slide freely and keeps the relative central positions of the cylinder and the bearing box and the cylinder and the rotor unchanged under the conditions of starting, heating expansion, stopping, cooling contraction and changing of operation working conditions.
The guide key at the bottom of the bearing box of the steam turbine is corroded, abraded and roughened, so that a sliding pin system of the unit is jammed, and the safety of the unit is affected. The novel guide key is made of a material with good oxidation resistance, and the surface of the novel guide key is nitrided to improve the wear resistance. Meanwhile, the chip grooves are formed in the top structure of the guide key, so that the function of collecting impurities and rusty materials is achieved, and the jamming of a sliding pin system is effectively avoided.
As shown in fig. 3, the structure of the conventional guide key is a cuboid structure, and in terms of material use, the guide key is usually made of steel materials, a plurality of assembly holes are formed in the middle of the key body, and bolts are additionally mounted through the assembly holes for fixing, but in terms of structure design, on one hand, due to the reasons of materials, the structure of the guide key is relatively not resistant to wear and oxidation, and after the guide key is used for a certain time, many other negative influences are easily brought, and on the other hand, at a right angle of the guide key, the guide key is easily deformed due to external force, and even the guide sliding effect is influenced. This is disadvantageous, on the one hand, in terms of service life and, on the other hand, in terms of the effect of the guide key in the turbine.
Disclosure of Invention
The invention aims to: aiming at the existing problems, the guide key structure, the sliding pin system and the assembling method for resisting wear and oxidation are provided, the guide key body effectively solves the problem that rust at the bottom of the bearing box falls into a gap to cause larger friction to the guide key body or the box body through the design of the chip collecting grooves, and the problem that the right-angle position at the end part of the guide key is not wear-resistant through the design of the inverted arc surface.
The technical scheme adopted by the invention is as follows:
the utility model provides an anti-oxidation direction key structure of resistance to wears, is including the direction key body that is used for in the turboset, the last side of direction key body still is provided with the chip groove that is used for collecting impurity and corrosion thing, can collect magazine and corrosion thing that the bottom of the bearing box produced through the chip groove that collects so as to avoid impurity to enter into the clearance of direction key body one side or more side in the direction process, the direction key body is rectangular shape structure, is used for the direction at its length direction's both sides face, is the arcwall face at the both ends side of direction key body.
Furthermore, the guide key body is made of wear-resistant and oxidation-resistant materials.
Furthermore, the guide key body is made of 38CrMoAlA materials.
Furthermore, the surfaces of the two sides of the guide key body along the length direction are subjected to nitriding treatment so as to improve the wear resistance.
Furthermore, the scrap collecting groove is of a strip-shaped structure, and the strip-shaped groove penetrates through the length direction of the guide key body.
Further, the middle part of the guide key body is provided with an assembly hole, the assembly hole penetrates through the guide key body from top to bottom, and the assembly hole is provided with a plurality of guide key body length direction assemblies.
The utility model provides a steam turbine sliding pin system, includes the anti-oxidant direction key structure of resistance to wears, still includes the bed frame, be provided with on the bed frame and be used for assembling the direction key assembly groove, the fixed assembly of direction key is in the assembly groove, still be provided with the bearing box on the bed frame, bearing box bottom is provided with the spout, the spout matches with the direction key body, the collection bits trench is located the top of direction key body and is located the below of bearing box.
Furthermore, the guide key body is fixedly assembled on the base frame through a bolt, an assembly hole penetrating through the guide key body is formed in the guide key body, and the guide key body is fixedly assembled on the base frame after the bolt penetrates through the assembly hole.
Furthermore, gaps are formed between two side walls of the guide key body in the length direction and two side walls of the inner side of the sliding groove, and the total width of the gaps on the two sides is 0.4-0.8 mm.
A method of assembling a turbine sliding pin system comprising the steps of:
a. according to the assembly requirement, an assembly groove for assembling the guide key body is processed on the base frame, and a sliding groove for guiding sliding is processed at the bottom of the bearing box;
b. manufacturing a guide key body, manufacturing a strip-shaped guide key body blank by adopting an anti-wear and anti-oxidation material, machining the width of the guide key body by the blank according to the assembly groove and the sliding groove, chamfering the two end parts of the guide key body, machining a chip collecting groove and a machining assembly hole on the top of the guide key body, and nitriding the peripheral side surface of the guide key body;
c. the guide key body is fixedly assembled in an assembly groove in the base frame through the assembly hole by utilizing the bolt, and then the axial box is assembled through the matching of the sliding groove and the guide key body.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the wear-resistant and oxidation-resistant guide key structure, the sliding pin system and the assembling method solve the problems that the traditional guide key structure is not wear-resistant and short in service life, effectively improve the problem that the traditional cuboid structure is easy to deform in collision at the corners through the design of the inverted arc surface structures at the two end parts, effectively reduce the friction condition between the guide key and the bearing box body, effectively collect impurities falling from the bottom of the bearing box by means of the design of the chip collecting grooves, avoid entering the gap between the side surfaces of the guide key and the bearing box, and avoid the influence caused by the impurities, thereby effectively prolonging the service life of the guide key and the like;
2. the wear-resistant and oxidation-resistant guide key structure, the sliding pin system and the assembling method further optimize the material for manufacturing the guide key, effectively prolong the service life of the guide key by utilizing the wear-resistant and oxidation-resistant material, and further improve the wear resistance of the outer surface of the guide key by means of a nitriding treatment process, thereby further prolonging the service life of the guide key.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the structure of the guide key body of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of a conventional structure of a guide key body according to the present invention;
FIG. 4 is a schematic diagram of the construction of the slide pin system of the present invention.
The labels in the figure are: 1-a guide key body, 2-a chip collecting groove, 3-an arc surface, 4-an assembly hole, 5-a bearing box, 6-a sliding groove, 7-a base frame and 8-an assembly groove.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
A wear-resistant and oxidation-resistant guide key structure is shown in figures 1 and 2 and comprises a guide key body 1 used in a steam turbine set, wherein a scrap collecting groove 2 used for collecting impurities and rusty materials is further formed in the upper side face of the guide key body 1, the magazines and the rusty materials generated at the bottom of a bearing box 5 can be collected through the scrap collecting groove 2 so that the impurities can be prevented from entering gaps on one side or multiple sides of the guide key body 1 in the guide process, the guide key body 1 is of a long strip-shaped structure, two side faces in the length direction of the guide key body are used for guiding, and the side faces at two end portions of the guide key body 1 are arc-shaped faces 3.
In the embodiment, the chip collecting groove 2 is designed in the structure, and impurities falling from the bottom of the bearing box 5 can be effectively collected through the design of the chip groove, and once the impurities fall into the gap, the impurities are easy to cause larger friction and generate abrasion because the gap between the bottom of the bearing box 5 and the two sides of the guide key body is smaller; in addition, combine to carry out the radius cambered surface with the both ends of the direction key body, four right angles of the effectual solution traditional structure cuboid of design through this structure are the most fragile problem, and the right angled design receives the striking easily, and produces and warp, can cause after warping to produce certain jam between bearing box 5 and the direction key body does, are unfavorable for the direction effect of whole structure to and also do not benefit to the life of the direction key body.
Based on the design of the specific structure, as a more specific design, the guide key body 1 is made of wear-resistant and oxidation-resistant materials. The anti-abrasion and anti-oxidation effects of the whole structure are further improved through the structure.
On the basis of the design of the specific structure, as a further design, more specifically, the guide key body 1 is made of 38 CrMoAlA. In traditional structural design, the common material is made of common steel materials, and in the field, as the parts are applied to the steam turbine set, the material comparison is integrated, and the guide key body 1 is processed by adopting the material, the wear-resistant and oxidation-resistant effects can be effectively realized.
Based on the above specific structure, as a more specific design, the surfaces of the guide key body 1 on both sides in the length direction thereof are nitrided to improve wear resistance. Based on the design of the material of the guide key body, the surface is nitrided. And a nitriding process is added in the production process, so that the wear resistance of the steel is greatly improved.
As a more specific design, the chip collecting grooves 2 are formed in a strip-shaped structure, and the strip-shaped grooves penetrate through the length direction of the guide key body 1. In the machining process, the chip collecting groove 2 can be directly milled into a strip-shaped groove by adopting a milling machine. In order to ensure the stability of the guide key, the depth of the chip collecting groove 2 is 1-4 mm.
As a more specific design, the middle part of the guide key body 1 is further provided with an assembly hole 4, the assembly hole 4 penetrates through the guide key body 1 from top to bottom, and the assembly hole 4 is provided with a plurality of assemblies and assembled along the length direction of the guide key body 1.
Example 2
A steam turbine sliding pin system, as shown in fig. 4, includes the wear-resistant and oxidation-resistant guide key structure of embodiment 1, and further includes a base frame 7, an assembly groove 8 for assembling the guide key is provided on the base frame 7, the guide key is fixedly assembled in the assembly groove 8, a bearing box 5 is further provided on the base frame 7, a sliding groove 6 is provided at the bottom of the bearing box 5, the sliding groove 6 is matched with the guide key body 1, and the chip collecting groove 2 is located at the top of the guide key body and below the bearing box 5.
On the basis of the above specific design, more specifically, the guide key body is fixedly assembled on the base frame 7 through a bolt, an assembly hole 4 penetrating through the guide key body 1 is formed in the guide key body 1, and the guide key body is fixedly assembled on the base frame 7 after the bolt penetrates through the assembly hole 4.
In the assembly of the structure, the distance between the guide key body and two side walls in the sliding groove 6 at the bottom of the bearing box 5 also has design requirements, a gap is formed between the two side walls in the length direction of the guide key body 1 and two side walls on the inner side of the sliding groove 6, and the total width of the gaps on the two sides is 0.4mm-0.8 mm. As for the design of the structure, as for the turbine precision equipment, not only the precision of the structural assembly is realized and the influence of the outside (the surrounding environment and the like) is avoided, but also the sliding of the bearing box 5 cannot be influenced, and when the sliding is less than 0.4, the bearing box 5 cannot slide easily.
Example 3
A method of assembling a turbine sliding pin system comprising the steps of:
a. according to the assembly requirement, an assembly groove for assembling the guide key body is processed on the base frame, and a sliding groove for guiding sliding is processed at the bottom of the bearing box;
b. manufacturing a guide key body, manufacturing a strip-shaped guide key body blank by adopting an anti-wear and anti-oxidation material, machining the width of the guide key body by the blank according to the assembly groove and the sliding groove, chamfering the two end parts of the guide key body, machining a chip collecting groove and a machining assembly hole on the top of the guide key body, and nitriding the peripheral side surface of the guide key body;
c. the guide key body is fixedly assembled in an assembly groove in the base frame through the assembly hole by utilizing the bolt, and then the axial box is assembled through the matching of the sliding groove and the guide key body.
In summary, the following steps:
1. the wear-resistant and oxidation-resistant guide key structure, the sliding pin system and the assembling method solve the problems that the traditional guide key structure is not wear-resistant and short in service life, effectively improve the problem that the traditional cuboid structure is easy to deform in collision at the corners through the design of the inverted arc surface structures at the two end parts, effectively reduce the friction condition between the guide key and the bearing box body, effectively collect impurities falling from the bottom of the bearing box by means of the design of the chip collecting grooves, avoid entering the gap between the side surfaces of the guide key and the bearing box, and avoid the influence caused by the impurities, thereby effectively prolonging the service life of the guide key and the like;
2. the wear-resistant and oxidation-resistant guide key structure, the sliding pin system and the assembling method further optimize the material for manufacturing the guide key, effectively prolong the service life of the guide key by utilizing the wear-resistant and oxidation-resistant material, and further improve the wear resistance of the outer surface of the guide key by means of a nitriding treatment process, thereby further prolonging the service life of the guide key.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. The utility model provides an anti-oxidation direction key structure resistance to wears which characterized in that: the guide key body is of a long strip structure, two side faces in the length direction of the guide key body are used for guiding, and the side faces of two end portions of the guide key body are arc-shaped faces (3).
2. The anti-wear and anti-oxidation guide key structure of claim 1, wherein: the guide key body is made of wear-resistant and oxidation-resistant materials.
3. The anti-wear and anti-oxidation guide key structure of claim 2, wherein: the guide key body is made of 38CrMoAlA materials.
4. The anti-wear and anti-oxidation guide key structure of claim 1, wherein: the surfaces of the guide key body on both sides in the length direction thereof are nitrided to improve wear resistance.
5. The anti-wear and anti-oxidation guide key structure of claim 1, wherein: the chip collecting grooves (2) are of strip-shaped structures, and the strip-shaped grooves penetrate through the length direction of the guide key body.
6. The anti-wear and anti-oxidation guide key structure of claim 1, wherein: the middle part of the guide key body is also provided with an assembly hole (4), the assembly hole (4) penetrates through the guide key body from top to bottom, and the assembly hole (4) is provided with a plurality of guide key body length direction assemblies.
7. A turbine sliding pin system, comprising: the structure comprises the wear-resistant and oxidation-resistant guide key structure as recited in any one of claims 1 to 6, and further comprises a base frame (7), wherein an assembly groove (8) for assembling the guide key is arranged on the base frame (7), the guide key is fixedly assembled in the assembly groove (8), a bearing box (5) is further arranged on the base frame (7), a sliding groove (6) is arranged at the bottom of the bearing box (5), the sliding groove (6) is matched with the guide key body, and the chip collecting groove (2) is positioned at the top of the guide key body (1) and below the bearing box (5).
8. The turbine sliding pin system according to claim 7, wherein: the guide key body (1) is fixedly assembled on the base frame (7) through a bolt, an assembly hole (4) penetrating through the guide key body is formed in the guide key body, and the guide key body (1) is fixedly assembled on the base frame (7) after the bolt penetrates through the assembly hole (4).
9. The turbine sliding pin system according to claim 7, wherein: gaps are formed between two side walls of the guide key body in the length direction and two side walls of the inner side of the sliding groove (6), and the total width of the gaps on the two sides is 0.4-0.8 mm.
10. A method of assembling a turbine sliding pin system, comprising: the method comprises the following steps:
a. according to the assembly requirement, an assembly groove for assembling the guide key body is processed on the base frame, and a sliding groove for guiding sliding is processed at the bottom of the bearing box;
b. manufacturing a guide key body, manufacturing a strip-shaped guide key body blank by adopting an anti-wear and anti-oxidation material, machining the width of the guide key body by the blank according to the assembly groove and the sliding groove, chamfering the two end parts of the guide key body, machining a chip collecting groove and a machining assembly hole on the top of the guide key body, and nitriding the peripheral side surface of the guide key body;
c. the guide key body is fixedly assembled in an assembly groove in the base frame through the assembly hole by utilizing the bolt, and then the axial box is assembled through the matching of the sliding groove and the guide key body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111561914.1A CN114412593B (en) | 2021-12-20 | 2021-12-20 | Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembly method |
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| CN202111561914.1A CN114412593B (en) | 2021-12-20 | 2021-12-20 | Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembly method |
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| CN114412593B CN114412593B (en) | 2023-07-18 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352783A (en) * | 2011-11-07 | 2012-02-15 | 哈尔滨汽轮机厂有限责任公司 | Sliding pin system of steam turbine |
| CN204627684U (en) * | 2015-04-10 | 2015-09-09 | 北京北重汽轮电机有限责任公司 | A kind of sliding pin system of steam turbine |
| CN205955780U (en) * | 2016-08-30 | 2017-02-15 | 华润电力（宜昌）有限公司 | Steam turbine sliding pin dust keeper |
| CN107218090A (en) * | 2017-07-21 | 2017-09-29 | 东方电气集团东方汽轮机有限公司 | A kind of steam turbine ground low-pressure internal cylinder structure |
| CN206903697U (en) * | 2017-04-27 | 2018-01-19 | 华电电力科学研究院 | Sliding pin system of steam turbine |
| CN207598300U (en) * | 2017-12-12 | 2018-07-10 | 东阳市金陵机械有限公司 | A kind of modified cylinder pumps tooling |
| CN110005482A (en) * | 2019-04-03 | 2019-07-12 | 杭州汽轮机股份有限公司 | A kind of Novel cylinder and bearing block adjust guide frame |
| CN210118170U (en) * | 2019-07-23 | 2020-02-28 | 哈尔滨汽轮机厂有限责任公司 | Sliding pin system for small and medium-sized steam turbines |
| CN111974557A (en) * | 2020-08-13 | 2020-11-24 | 张家港萨姆特液压技术有限公司 | Guide structure with self-lubricating function |
| CN112554970A (en) * | 2020-12-25 | 2021-03-26 | 国家电投集团河南电力有限公司 | Push-pull structure of bearing box of steam turbine |
| US20210332722A1 (en) * | 2017-02-24 | 2021-10-28 | Mitsubishi Heavy Industries Compressor Corporation | Steam turbine, center guide pin, and method for manufacturing steam turbine |
| CN215110155U (en) * | 2021-04-16 | 2021-12-10 | 天津水泥工业设计研究院有限公司 | Embedded detachable guide key for roller press |
| CN215151867U (en) * | 2021-07-21 | 2021-12-14 | 深圳市纵维立方科技有限公司 | Guide structure and printer |
-
2021
- 2021-12-20 CN CN202111561914.1A patent/CN114412593B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352783A (en) * | 2011-11-07 | 2012-02-15 | 哈尔滨汽轮机厂有限责任公司 | Sliding pin system of steam turbine |
| CN204627684U (en) * | 2015-04-10 | 2015-09-09 | 北京北重汽轮电机有限责任公司 | A kind of sliding pin system of steam turbine |
| CN205955780U (en) * | 2016-08-30 | 2017-02-15 | 华润电力（宜昌）有限公司 | Steam turbine sliding pin dust keeper |
| US20210332722A1 (en) * | 2017-02-24 | 2021-10-28 | Mitsubishi Heavy Industries Compressor Corporation | Steam turbine, center guide pin, and method for manufacturing steam turbine |
| CN206903697U (en) * | 2017-04-27 | 2018-01-19 | 华电电力科学研究院 | Sliding pin system of steam turbine |
| CN107218090A (en) * | 2017-07-21 | 2017-09-29 | 东方电气集团东方汽轮机有限公司 | A kind of steam turbine ground low-pressure internal cylinder structure |
| CN207598300U (en) * | 2017-12-12 | 2018-07-10 | 东阳市金陵机械有限公司 | A kind of modified cylinder pumps tooling |
| CN110005482A (en) * | 2019-04-03 | 2019-07-12 | 杭州汽轮机股份有限公司 | A kind of Novel cylinder and bearing block adjust guide frame |
| CN210118170U (en) * | 2019-07-23 | 2020-02-28 | 哈尔滨汽轮机厂有限责任公司 | Sliding pin system for small and medium-sized steam turbines |
| CN111974557A (en) * | 2020-08-13 | 2020-11-24 | 张家港萨姆特液压技术有限公司 | Guide structure with self-lubricating function |
| CN112554970A (en) * | 2020-12-25 | 2021-03-26 | 国家电投集团河南电力有限公司 | Push-pull structure of bearing box of steam turbine |
| CN215110155U (en) * | 2021-04-16 | 2021-12-10 | 天津水泥工业设计研究院有限公司 | Embedded detachable guide key for roller press |
| CN215151867U (en) * | 2021-07-21 | 2021-12-14 | 深圳市纵维立方科技有限公司 | Guide structure and printer |
Non-Patent Citations (5)
| Title |
|---|
| 刘立新;: "探究双抽凝汽式50MW汽轮机滑销系统卡涩的解决方法", 能源科技, no. 03 * |
| 牟春雨: "某300MW高中压分缸汽轮机滑销系统卡涩治理", 东方汽轮机, no. 1, pages 62 - 68 * |
| 王晨瑜: "汽轮机滑销系统固体自润滑技术", 山西电力, no. 05 * |
| 贾光华;: "电厂螺旋卸车机升降机构导向装置的改进", 电力安全技术, no. 07 * |
| 高展羽;刘雄;杨晓燕;: "东方350 MW超临界单层中压缸设计要点分析", 东方汽轮机, no. 04 * |
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| CN114412593B (en) | 2023-07-18 |
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