CN106438679A - Steam turbine bearing - Google Patents

Steam turbine bearing Download PDF

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Publication number
CN106438679A
CN106438679A CN 201610996982 CN201610996982A CN106438679A CN 106438679 A CN106438679 A CN 106438679A CN 201610996982 CN201610996982 CN 201610996982 CN 201610996982 A CN201610996982 A CN 201610996982A CN 106438679 A CN106438679 A CN 106438679A
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CN
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Prior art keywords
oil
thrust
structure
groove
cylindrical body
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CN 201610996982
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Chinese (zh)
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CN106438679B (en )
Inventor
楼昱东
陈学锋
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楼昱东
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00Sliding-contact bearings for exclusively rotary movement
    • F16C17/12Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/24Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
    • F16C17/243Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety related to temperature and heat, e.g. for preventing overheating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1025Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1065Grooves on a bearing surface for distributing or collecting the liquid

Abstract

The invention belongs to the technical field of machinery, in particular, relates to a steam turbine bearing, and solves such technical problems as unreasonable design in the prior art. The steam turbine bearing comprises two bearing pads capable of splicing as a cylindrical body; annular thrust surfaces are respectively arranged at two ends of the cylindrical body; an inner lubricating structure is arranged on the inner side of the cylindrical body, and is connected with an oil supply structure arranged on the cylindrical body and capable of supplying oil to the inner lubricating structure; a thrust surface lubricating structure is arranged on the annular thrust surface; and the inner lubricating structure and the thrust surface lubricating structure are connected through an oil separation structure arranged on the cylindrical body. The steam turbine bearing has the following advantages: (1) the design is more reasonable; an oil film is formed between the bearing and a shaft body; the thrust surfaces always can be stably lubricated to effectively prevent wear thereof; and the use performance is improved; and (2) lubricating oil is used for circular lubrication, and a lubricating agent can be cooled, so that the heat dissipation can be further accelerated, meanwhile, the resource is saved, and the cost is reduced.

Description

汽轮机轴承 Turbine Bearing

技术领域 FIELD

[0001] 本发明属于机械技术领域,尤其涉及一种汽轮机轴承。 [0001] The present invention belongs to the technical field of machinery, in particular to a turbine bearing.

背景技术 Background technique

[0002] 汽轮机是工业生产中重要的动力设备之一,汽轮机的轴承是汽轮机组的重要组成部件,汽轮机的轴承主要用于支撑机械旋转体,降低其运动过程中的摩擦系数,并保证其回转精度。 [0002] Steam is one of important industrial production of the power plant, a steam turbine bearing member is an important component of the steam turbine unit, the steam turbine main bearing for supporting a rotating mechanical member, to reduce the coefficient of friction in its movement, and to ensure its rotation accuracy. 但由于汽轮机负载较大,运行时间长,目前常用的普通轴承结构不能满足汽轮机轴承的工作需要,轴承与轴体之间的接触面往往无法保持足够的润滑油进行润滑,造成轴承表面磨损严重,对自身结构以及设备造成破坏,此外,在高负荷运行后,产生大量的热量不易散出,轴承刚性变差,抗冲击性能变差,随时可能损坏并影响设备运行,极大降低设备的运行稳定性。 However, due to the steam turbine load is large, long-running, most commonly used ordinary bearing structure can not meet the operational needs of the turbine bearings, the contact surface between the bearing and the shaft are often unable to keep enough oil for lubrication, causing serious bearing surface wear, damage to the device and its structure, moreover, in the high load operation, a large amount of heat is not easily dissipated, deterioration of bearing rigidity, impact resistance is deteriorated, subject to damage and affect operation, greatly reducing the stable operation of the apparatus sex. 为了解决现有技术存在的问题,人们进行了长期的探索,提出了各式各样的解决方案。 To solve the problems of the prior art, there have been long-term exploration, we put forward a variety of solutions.

[0003] 例如,中国专利文献公开了一种滑动轴承[申请号:201180018539.4],包括一个环绕该轴的第一滑动轴承部分以及一个轴向地连接到该第一滑动轴承部分上的第二滑动轴承部分。 [0003] For example, Chinese patent document discloses a sliding bearing [application number: 201180018539.4], comprising a first sliding surrounding the shaft bearing portion and a second axially slidably connected to the first sliding bearing portion bearing part. 该第二滑动轴承部分的热膨胀系数是大于该第一滑动轴承部分的热膨胀系数。 Thermal expansion coefficient of the second sliding bearing portion is larger than the thermal expansion coefficient of the first sliding bearing portion.

[0004] 上述的方案在一定程度上改进了现有技术的部分问题,但是,该方案还至少存在以下缺陷:设计不合理,轴与滑动轴承的接触面之间不能够得到足够的润滑,散热性差,接触面温度高,滑动轴承性能变差,而且磨损严重的技术问题。 [0004] The above-described embodiment to some extent improve some of the problems of the prior art, however, the program also has at least the following disadvantages: the unreasonable design, the contact surface between the shaft and the sliding bearing can not obtain sufficient lubrication, cooling poor, high temperature contact surface, the slide bearing performance is deteriorated, and wear of serious technical problems.

发明内容 SUMMARY

[0005] 本发明的目的是针对上述问题,提供一种设计更合理,润滑效果好,使用性能佳的汽轮机轴承。 [0005] The object of the present invention is to solve the problem, there is provided a more rational design, good lubricating effect, good performance of the turbine bearings.

[0006] 为达到上述目的,本发明采用了下列技术方案:本汽轮机轴承包括两个能够相互拼合成筒状体的轴瓦,所述的筒状体的两端分别设有环形止推面,所述的筒状体内侧设有内润滑结构且内润滑结构与设置在筒状体上且能向内润滑结构供油的供油结构相连,所述的环形止推面上设有止推面润滑结构,所述的内润滑结构和止推面润滑结构之间通过设置在筒状体上的分油结构相连,所述的止推面润滑结构包括设置在环形止推面上的若干在圆周方向上均匀间隔分布的分油槽,所述的分油槽沿着环形止推面径向延伸,各分油槽的内端分别与所述分油结构相连,各分油槽的外端分别形成缩口槽且缩口槽连通至环形止推面外侧,所述的分油槽将环形止推面分隔成若干止推区域,所述的止推区域分别包括在圆周方向相邻设置的止推平面和导油面,所述的导油面为 [0006] To achieve the above object, the present invention employs the following technical solution: The steam turbine comprises two bearing pad can be synthesized with each other to fight the cylindrical body, both ends of the cylindrical body are respectively provided with an annular thrust surface, the said inner cylindrical body is provided with the lubrication structure is provided and connected to the structure and capable of lubricating oil supply structure inwardly lubricating oil supply structure in a cylindrical body, provided with said thrust surface lubricated annular thrust surface between structure, said inner structure and the lubrication thrust surface by the oil lubrication structure is provided in the cylindrical structure connected to the body, said thrust surface includes a plurality of lubrication structure in a circumferential direction of the annular thrust surface uniformly distributed oil groove spaced points, said points along the annular oil groove radially extending thrust face, the inner end of the sub-tank is connected to the oil separator structure, respectively, the outer ends of the sub oil sump and grooves are formed constriction necking communicating groove to push the outer annular stop surface, the partial annular oil groove is partitioned into a plurality of thrust face of the thrust region, said regions each comprising a thrust in the circumferential direction arranged adjacent to the thrust plane and the oil guide face , the oil guide surface is 止推平面向分油槽平滑过渡的螺旋面,导油面与止推平面相连一侧的高点位于筒状体径向外侧而低点位于筒状体径向内侧,导油面与分油槽相连一侧的高点位于筒状体径向外侧而低点位于筒状体径向内侧。 Spiral thrust face flat smooth transition to the sub-tank, and the oil guide surface is connected to the high point of the thrust plane located on the side of the cylindrical body radially outward low positioned radially inside the cylindrical body, connected with the sub-tank oil guide surface high point is located on one side of the cylindrical body radially outward low positioned radially inside the cylindrical body.

[0007] 在本申请中,通过在筒状体的内侧面以及止推面上同时设置润滑机构,能够显著提高油液的润滑效果,减小轴承与轴体的摩擦,同时降低两者之间的温度,因此能够有效提高轴承使用时的使用性能,在筒状体的内侧面通过设置内润滑结构使轴体进行轴向转动时,轴承的内侧与轴体的外侧之间形成油腔,在轴承的止推面上通过设置止推面润滑结构使轴体的端面与轴承的止推面抵靠后,在两者之间形成油腔,上述所说的油腔均通过供油机构依次进行供油,因此能够使轴承与轴体发生抵靠的部位均形成油膜,能够显著提高油液的润滑效果,减小轴承与轴体的摩擦,同时降低两者之间的温度,此外,由于汽轮机在工作时产生巨大的振动,油膜的存在能够有效减缓振动的发生,进而减小因为振动对设备造成的伤害,因此能够提高设备的使用性能和使用寿 [0007] In the present application, by providing the lubrication means while the inner side surface of the cylindrical body and a thrust face, can significantly improve the lubrication oil, reducing the friction bearing and the shaft body, while reducing therebetween the temperature can be effectively used to improve the performance of bearings, the inner surface of the inner cylindrical body by lubrication structure is provided axially of the shaft body is rotated, the oil chamber is formed between the outer shaft and the inner bearing member, in thrust bearing surface by providing the lubricating structure so that the thrust surface faces the end face of the thrust bearing against the rear shaft, the oil chamber is formed therebetween, the above said oil chamber through the oil feed mechanism are carried out successively oil, it is possible to make the bearing and the shaft parts are occurring against the oil film, can significantly improve the lubrication oil, reducing the friction bearing and the shaft body, while reducing the temperature difference between the two, in addition, since the turbine enormous vibrations during operation, oil film can effectively reduce the generation of vibration, thereby reducing damage due to vibration caused by the device, it is possible to improve the performance of the device and use life 命。 Life.

[0008] 在上述的汽轮机轴承中,位于筒状体一端的止推区域的止推平面位于导油面的顺时针方向,位于筒状体另一端的止推区域的止推平面位于导油面的逆时针方向。 [0008] In the turbine bearings, thrust plane thrust region is positioned at one end of the cylindrical body of the oil guide surface is located in the clockwise direction, the thrust plane is located in the region of the other end of the thrust of the cylindrical body is located the oil guide surface the counterclockwise.

[0009] 在上述的汽轮机轴承中,所述的内润滑结构包括设置在筒状体内壁的若干在圆周方向上均匀间隔分布的储油深槽,所述的储油深槽沿着筒状体轴向延伸,储油深槽的长度小于筒状体的长度,在储油深槽的两端对称地设有与分油结构相连通的出油浅沟,且出油浅沟的宽度为储油深槽的宽度的八分之一至十六分之一,相邻的储油深槽之间形成位于筒状体内壁的油叶面。 [0009] In the turbine bearing, the lubricating structure comprising an inner disposed in the circumferential direction a plurality of uniformly spaced cylindrical inner wall of the deep groove oil, said deep trench along the tubular body oil axially extending, oil length less than the length of the deep grooves of the cylindrical body, the deep grooves are provided at both ends of the width of the reservoir oil structure communicating shallow oil, and the oil reservoir is shallow symmetrically to the width of one-sixteenth of one-eighth of an oil deep grooves, forming an oil foliar positioned between the inner wall of the cylindrical reservoir adjacent deep grooves.

[0010] 在上述的汽轮机轴承中,所述的供油结构包括若干开于筒状体上的供油孔,所述的供油孔的一端与储油深槽的底部贯通,另一端与外置供油机构相连通。 [0010] In the turbine bearing, the oil supply structure comprises a plurality of oil supply holes opened in the cylindrical body, the bottom end of the reservoir and the deep groove through the oil supply hole, the other end of the outer supply means communicating set.

[0011] 在上述的汽轮机轴承中,所述的储油深槽的数量为四个且在圆周方向均匀分布,所述的储油深槽的横截面呈圆弧形。 [0011] In the turbine bearing, a deep groove of the oil number is four and evenly distributed in the circumferential direction, the cross section of the deep trench reservoir circular arc.

[0012] 在上述的汽轮机轴承中,所述的油叶面上分别浇铸成型有耐磨层,所述的耐磨层中部的厚度大于两侧的厚度从而在耐磨层与储油深槽相邻的一侧形成倾斜面。 [0012] In the turbine bearing, the oil foliage were cast molding with a wear layer thickness, the thickness of the abrasion resistant layer is greater than the middle of the sides of the reservoir so that the wear layer with deep grooves an inclined surface formed adjacent to one side.

[0013] 在上述的汽轮机轴承中,所述的分油结构包括设于内润滑结构与止推面润滑结构之间的环形台阶,所述的分油槽的内端与环形台阶相连通,所述的出油浅沟的外端与环形台阶相连通。 [0013] In the turbine bearing, the oil separation structure comprising an annular step disposed between the inner structure and the thrust surface lubricating lubrication structure, said partial inner end of the annular oil groove communicating step, said the oil shallow annular outer end communicating step.

[0014] 在上述的汽轮机轴承中,所述的筒状体的外侧设有环形槽,所述的环形槽内设有环形沟槽,所述的供油孔位于环形沟槽内;所述的轴瓦上分别设有至少一个吊装螺孔。 [0014] In the turbine bearing, the outer cylindrical body is provided with an annular groove, said annular groove is provided with an annular groove, the oil supply hole is positioned within the annular groove; the respectively, with at least one lifting screw holes on the bush.

[0015] 在上述的汽轮机轴承中,所述的筒状体内设有能将相邻的两个供油孔中部相互连通的连接通道。 [0015] In the turbine bearings, the cylindrical body provided with two adjacent able to communicate with each other oil supply Central and Kong connecting channel.

[0016] 在上述的汽轮机轴承中,所述的止推面润滑结构与筒状体端部之间形成位于止推面润滑结构外围且低于止推面润滑结构的环形阶梯,所述的环形阶梯上浇铸有与止推面润滑结构齐平的耐磨圈,所述的耐磨圈上设有与缩口槽相连通的延伸槽;所述的分油槽为矩形槽且分油槽的外端两肩分别呈圆弧形;所述的轴瓦通过紧固螺栓固连在一起。 [0016] In the turbine bearings, lubrication structure positioned to form an annular peripheral surface of the thrust ring and less than the stepped configuration of the lubrication thrust surface, said lubrication structure between the cylindrical body and an end portion of the thrust surface there are cast on the stepped structure of the thrust surface flush lubricating wearable ring groove is provided with a constriction extending grooves communicating the wear ring; the sub oil groove is rectangular groove and the outer end points of the oil groove are arc-shaped shoulders; said bush fixedly connected by a fastening bolt.

[0017] 与现有的技术相比,本汽轮机轴承的优点在于:1、设计更合理,轴承与轴体之间形成油膜,止推面始终能够得到稳定的润滑,有效防止止推面磨损,提高使用性能。 [0017] Compared with the prior art, advantages of the turbine bearings is: 1, more reasonable, an oil film is formed between the bearing and the shaft, the thrust surface is always possible to obtain stable lubricating effectively prevent the thrust surface wear, improve performance. 2、润滑油液进行循环润滑,润滑剂能够得到冷却,不仅能够进一步促进散热,同时节约资源,降低成本。 2, the liquid lubricating oil circulation lubrication, the lubricant can be cooled, not only to further facilitate heat dissipation, while conserving resources, reducing costs.

附图说明 BRIEF DESCRIPTION

[0018]图1是本发明提供的立体结构示意图。 [0018] FIG. 1 is a schematic perspective view of the present invention is provided.

[0019]图2是本发明提供的剖视图。 [0019] FIG. 2 is a sectional view of the present invention is provided.

[0020] 图3是图2中AA的剖视图。 [0020] FIG. 3 is a sectional view AA of FIG.

[0021] 图4是图2中BB的剖视图。 [0021] FIG. 4 is a sectional view BB of FIG.

[0022]图5是图2中CC的剖视图。 [0022] FIG. 5 is a sectional view CC of FIG.

[0023] 图6是图3中DD的剖视图。 [0023] FIG. 6 is a sectional view DD in FIG.

[0024]图7是图3中EE的剖视图。 [0024] FIG. 7 is a sectional view of FIG. 3 EE.

[0025] 图8是图7中FF的剖视图。 [0025] FIG. 8 is a sectional view of FIG. 7 FF.

[0026] 图中,筒状体1、轴瓦11、环形槽12、环形沟槽13、吊装螺孔14、连接通道15、环形止推面2、内润滑结构3、储油深槽31、出油浅沟32、油叶面33、耐磨层34、倾斜面35、供油结构4、供油孔41、止推面润滑结构5、环形阶梯52、耐磨圈53、延伸槽54、分油结构6、环形台阶61、分油槽7、缩口槽8、止推区域9、止推平面91、导油面92。 [0026] FIG, cylindrical body 1, bearing 11, annular groove 12, annular groove 13, lifting screw 14, the connecting passage 15, the annular thrust surface 2, the lubrication structure 3, an oil reservoir deep grooves 31, the 32 shallow oil, leaf oil 33, a wear layer 34, the inclined surface 35, the oil supply structure 4, the oil supply hole 41, lubrication of the thrust surface structure 5, the annular step 52, wear ring 53, groove 54 extends, minutes oil structure 6, the annular step 61, sub-tank 7, necking groove 8, the thrust zone 9, a thrust plane 91, the oil guide surface 92.

具体实施方式 detailed description

[0027]下面结合附图和具体实施方式对本发明做进一步详细的说明。 [0027] The present invention will be further described in detail in conjunction with accompanying drawings and specific embodiments.

[0028]如图1-8所示,本汽轮机轴承包括两个能够相互拼合成筒状体I的轴瓦11,筒状体I的两端分别设有环形止推面2,其特征在于,筒状体I内侧设有内润滑结构3且内润滑结构3与设置在筒状体I上且能向内润滑结构3供油的供油结构4相连,环形止推面2上设有止推面润滑结构5,内润滑结构3和止推面润滑结构5之间通过设置在筒状体I上的分油结构6相连,止推面润滑结构5包括设置在环形止推面2上的若干在圆周方向上均匀间隔分布的分油槽7,分油槽7沿着环形止推面2径向延伸,各分油槽7的内端分别与所述分油结构6相连,各分油槽7的外端分别形成缩口槽8且缩口槽8连通至环形止推面2外侧,分油槽7将环形止推面2分隔成若干止推区域9,止推区域9分别包括在圆周方向相邻设置的止推平面91和导油面92,导油面92为自止推平面91向分油槽7平滑过渡的螺旋面,导油面92与 [0028] As shown, the turbine bearing comprises two cylindrical bodies can be stitched into the pad 11 I each other, both ends of the cylindrical body I are provided with an annular thrust surface 2, characterized in that 1-8, the cartridge I like body is provided with inner lubrication structure 3 is connected to the lubrication structure 3 and provided on the inner cylindrical body I inwards and can supply structure 3 oil lubrication structure 4, is provided with annular stop faces on the thrust surface push 2 structure oil lubrication structure 5, between 3 and 5 the thrust surface of the inner structure of the lubrication by lubricating structure is provided on the cylindrical body 6 is connected to the I, thrust surface 5 comprises a lubrication structure is provided on an annular thrust surface in a number of 2 evenly spaced sub tank 7, 7 points along the oil groove to push the annular stop surface 2 extends radially in the circumferential direction, the sub-tank 7 is connected to the inner end of each of the oil structure 6, the outer ends of the sub-tank 7, respectively necking and grooves 8 formed necking groove 8 communicates with the annular stop pushing the outer surface 2, the sub-tank 7 ring thrust surface 2 is partitioned into a plurality of thrust region 9, 9 each comprises a thrust zone disposed adjacent in the circumferential direction of the stopper oil guide plane 91 and the pushing surface 92, the oil guide surface 92 of the stop 91 from the sub-tank 7 helicoid smooth transition pushing plane, the oil guide surface 92 and 止推平面91相连一侧的高点位于筒状体I径向外侧而低点位于筒状体I径向内侧,导油面92与分油槽7相连一侧的高点位于筒状体I径向外侧而低点位于筒状体I径向内侧,进一步的,导油面对应的弧度与止推平面91对应的弧度的比值为(2.5-3): I。 Thrust plane 91 is connected to a high side point I is located radially outward of the cylindrical body and the cylindrical body I low positioned radially inside the oil guide surface 92 and the sub-tank 7 is connected to the high-point side of the cylindrical body positioned diameter I outward and low I located radially inward of the cylindrical member, further, the ratio of the oil guide face corresponding to the curvature of the thrust plane 91 corresponding to the arc is (2.5-3): I.

[0029] 在本申请中,通过在筒状体的内侧面以及止推面上同时设置润滑机构,能够显著提高油液的润滑效果,减小轴承与轴体的摩擦,同时降低两者之间的温度,因此能够有效提高轴承使用时的使用性能,在筒状体的内侧面通过设置内润滑结构使轴体进行轴向转动时,轴承的内侧与轴体的外侧之间形成油腔,在轴承的止推面上通过设置止推面润滑结构使轴体的端面与轴承的止推面抵靠后,在两者之间形成油腔,上述所说的油腔均通过供油机构依次进行供油,由于汽轮机在使用时,轴体与轴承之间形成端的负荷,因此止推面的润滑机构显的更为重要,在止推面上设有若干个在圆周方向上均匀分布的分油槽,通过分油槽形成若干个相同的止推区域,每个止推区域依次有止推平面和导油面组成,当轴体转动后,分油槽内的油液流向导油面,并随着轴体的转 [0029] In the present application, by providing the lubrication means while the inner side surface of the cylindrical body and a thrust face, can significantly improve the lubrication oil, reducing the friction bearing and the shaft body, while reducing therebetween the temperature can be effectively used to improve the performance of bearings, the inner surface of the inner cylindrical body by lubrication structure is provided axially of the shaft body is rotated, the oil chamber is formed between the outer shaft and the inner bearing member, in thrust bearing surface by providing the lubricating structure so that the thrust surface faces the end face of the thrust bearing against the rear shaft, the oil chamber is formed therebetween, the above said oil chamber through the oil feed mechanism are carried out successively oil, since, in use, is formed between the load side of the turbine shaft and the bearing, the lubricating mechanism so thrust face is substantially more important, with a plurality of uniformly distributed in the circumferential direction of the sub-tank on the thrust surface , divided by the same number of oil grooves are formed thrust regions, each region sequentially thrust plane and a thrust guide oil composition, when the shaft is rotated, the oil flow in the oil guide sub tank, and with the shaft turn body 动导油面上的油液流向止推平面上,并在轴承与止推面之间形成完整的油膜。 Fluid flows oil guide face of the movable thrust plane, and form a complete oil film between the bearing and the thrust face. 为了提高止推面润滑结构的润滑效果,因此将导油面设计为为自止推平面向分油槽平滑过渡的螺旋面,其中,导油面与止推平面相连一侧的高点位于筒状体径向外侧而低点位于筒状体径向内侧,导油面与分油槽相连一侧的高点位于筒状体径向外侧而低点位于筒状体径向内侧,由于当轴体转动后,油液收到离心力的作用,迫使油液向外侧流动,因此在半径方向上使导油面外侧的高度高于内侧的高度,在圆周方向上使导油面远离分油槽一侧的高度高于靠近分油槽一侧的高度,这样能够使油液在导油面的各个点上都具有足够的油液进行补充,从而能够使用过程中止推面的润滑效果。 In order to improve the lubrication effect of the lubrication structure of the thrust surface, the surface of the oil guide surface is designed to push the coil plane is a smooth transition from the stop to the sub tank, wherein the oil guide surface is connected to the high point of the thrust plane of the cylindrical side low body located radially outward of the cylindrical body radially inward side of the high point of attachment points sump oil guide surface is located radially outward of the cylindrical body positioned low cylindrical body radially inward due to the rotation axis when the member after receipt of the centrifugal force of the oil, forcing the oil to flow to the outside, so that the height of the oil guide face outward in the radial direction than the inner height of the oil guide face in the circumferential direction away from the side of the sub tank height than the height of a side close to the sub-tank, so that fluid can be made at various points of the oil guide surface has a sufficient oil supplement, it is possible to use a process pause push surface lubrication. 此外出油槽的径向外端设有缩口槽,缩口槽单位时间内的出油量远小于出油槽出油量,因此能够使油液在一定程度上得到循环,此外油液中的杂质在离心力的作用下外移,并能够通过缩口槽排出。 Furthermore the radially outer end is provided with a sump necking groove, the oil grooves in the necking unit time is much less than the amount of oil out of the sump, it is possible to obtain a fluid circulating in a certain extent, in addition to fluid impurities relocation of the centrifugal force, and can be discharged through the groove necking.

[0030] 具体的,位于筒状体I一端的止推区域9的止推平面91位于导油面92的顺时针方向,位于筒状体I另一端的止推区域9的止推平面91位于导油面92的逆时针方向。 Thrust plane thrust region [0030] Specifically, the thrust region is located at one end of the cylindrical body I thrust plane 9 of the oil guide 91 is in the clockwise direction of the surface 92, it is located the other end of the cylindrical body 9 I 91 is located oil guide surface 92 in the counterclockwise direction. 转动后,导油面位于止推平面的前方更能够提高油液对止推平面的润滑效果,因此为了进一步提高轴承的实用性,可根据轴体的转动方向进行摆置,使轴承工作后,油液的流动方向始终为从分油槽至导油面最后到止推平面的方向。 After the rotation, the oil guide surface is located in front of the plane of the thrust can be increased more oil for lubrication of the thrust plane, and therefore in order to further improve the practicality of the bearing arrangements and may be carried out according to the rotation direction of the shaft member, the bearing after work, fluid flow direction is always the last to stop pushing direction of the plane from the sub tank to the oil guide face.

[0031]上述所说的内润滑结构3包括设置在筒状体I内壁的若干在圆周方向上均匀间隔分布的储油深槽31,储油深槽31沿着筒状体I轴向延伸,储油深槽31的长度小于筒状体I的长度,在储油深槽31的两端对称地设有与分油结构6相连通的出油浅沟32,且出油浅沟32的宽度为储油深槽31的宽度的八分之一至十六分之一,相邻的储油深槽31之间形成位于筒状体I内壁的油叶面33。 [0031] The lubricating said inner structure 3 comprises a plurality of disposed uniformly in the circumferential direction of the deep grooves spaced cylindrical body I reservoir inner wall 31, the reservoir 31 extends along the deep grooves of the cylindrical body axially I, oil length less than the length of the deep groove 31 of the cylindrical body I, structure 6 is provided with the oil communicating shallow oil reservoir 32 symmetrically at both ends of the deep grooves 31 and 32 having a width of the shallow oil one reservoir deep grooves 31 of a width one eighth to sixteenth, leaf 33 is formed an oil cylindrical inner wall I positioned between reservoir 31 adjacent deep grooves. 其中,储油深槽31的数量为四个且在圆周方向均匀分布,储油深槽31的横截面呈圆弧形;优化的,油叶面33上分别浇铸成型有耐磨层34,耐磨层34中部的厚度大于两侧的厚度从而在耐磨层34与储油深槽31相邻的一侧形成倾斜面35。 Wherein the number of the reservoir 31 is four deep grooves and distributed uniformly in the circumferential direction, deep groove cross-section of the oil reservoir 31 of a circular arc; optimization, the leaf oil 33 are cast molding a wear-resistant layer 34, resistance the thickness of layer 34 is greater than the thickness of the central grinding both sides of the inclined surface 35 is formed so that the adjacent side of the wear layer 31 and the reservoir 34 deep grooves. 油液从储油深槽31流至油叶面对油叶面进行润滑,此外,通过倾斜面能够进一步提高出油量,耐磨层由一种抗耐磨的合金材料制成,能有效减小两者之间的磨损,延长零部件的使用周期。 Fluid flow from reservoir 31 to the oil leaves the face of the deep grooves leaf oil lubrication, in addition, can be further improved by the inclined surface out of fuel, a wear layer made of an alloy material, an anti-wear, can effectively reduce wear between the two small, extend the life cycle of parts.

[0032] 优化方案,该供油结构4包括若干开于筒状体I上的供油孔41,供油孔41的一端与储油深槽31的底部贯通,另一端与外置供油机构相连通。 [0032] The optimization program, the oil supply structure 4 comprises a plurality of oil supply holes opened in the cylindrical body 41 the I, one end of the oil supply hole at the bottom of the deep grooves 41 through 31, the other end of the external fuel supply mechanism communicating.

[0033] 更进一步的,分油结构6包括设于内润滑结构3与止推面润滑结构5之间的环形台阶61,分油槽7的内端与环形台阶61相连通,同时在分油槽与环形台阶之间设有导油口,出油浅沟32的外端与环形台阶61相连通,当轴体插入到轴承内后,环形台阶与轴体之间形成周向封闭的通道。 [0033] Still further, the structure 6 comprises the oil lubrication structure is provided in the annular step 61 between the structure 3 and the stopper 5 to push the lubricating surface, the inner end of the annular oil groove partial step 617 in communication, while the sub-tank and is provided between the annular stepped guide port, the oil shallow annular step 61 and the outer end 32 is in communication, when the shaft body is inserted into the inner bearing circumferentially closed channel is formed between the shaft member and the annular step.

[0034]作为优化方案,在筒状体I的外侧设有环形槽12,环形槽12内设有环形沟槽13,供油孔41位于环形沟槽13内;轴瓦11上分别设有至少一个吊装螺孔14。 [0034] As optimization, the outer cylindrical member 12 I is provided with an annular groove, the annular groove 12 features an annular groove 13, the oil supply hole 41 is located within the annular groove 13; each provided with at least one pad 11 lifting screw holes 14. 同时轴瓦上还设有多个能够将筒状体定位的定位孔,通过吊装螺孔14使搬运和安装的过程得到极大的改善,同时由于汽轮机使用过程中振动大,通过定位孔使轴承体安装在轴承座时变得更加的稳定。 While the pad can be also provided with a plurality of positioning holes of the cylindrical body positioned so that the screw holes 14 by lifting and handling installation process has been greatly improved, and because large vibrations during the use of the turbine, the bearing member through the positioning holes installation becomes more stable in the bearing housing.

[0035] 此外,筒状体I内设有能将相邻的两个供油孔41中部相互连通的连接通道15。 [0035] Further, the cylindrical body I equipped with two connecting channel can supply hole 41 adjacent to the center 15 communicate with each other. 止推面润滑结构5与筒状体I端部之间形成位于止推面润滑结构5外围且低于止推面润滑结构5的环形阶梯52,环形阶梯52上浇铸有与止推面润滑结构5齐平的耐磨圈53,耐磨圈53上设有与缩口槽8相连通的延伸槽54;分油槽7为矩形槽且分油槽7的外端两肩分别呈圆弧形;轴瓦11通过紧固螺栓固连在一起。 A lubricating structure 5 is positioned between the peripheral surface of the thrust surface of the thrust lubricating structure 5 and the end portion of the cylindrical body I and less than 52 annular stepped thrust surface lubricating structure 5, there is cast the thrust on the annular step face 52 lubricating structure 5 flush with the wear ring 53, wear ring is provided with a constriction communicating groove extending grooves 54 8 53; 7 points oil groove is rectangular groove and an outer end of the sub-tank 7 are arc-shaped shoulders; pad by fastening bolt 11 secured together.

[0036] 本汽轮机轴承的工作原理如下,油液通过供油孔41进入至储油深槽31内,随后部分油液进入到油叶面33上对油叶面进行润滑,另一部分通过出油浅沟32进入到环形台阶61内,并通过导油口进入到分油槽内,分油槽内的油液通过导油面使环形止推面与轴体之间形成油膜,从而达到润滑效果。 [0036] This bearing works by the steam turbine, into the oil reservoir through the oil supply hole 41 to a deep groove 31, and then into an oil portion of the oil 33 pairs of leaf leaf oil lubrication, through another portion of the oil shallow groove 32 into the annular step 61, and into the sub-tank through the guide port, oil in the oil sump via the oil guide sub-surface of the annular stopper is formed between the film surface and pushes the shaft body, so as to achieve lubrication.

[0037] 本文中所描述的具体实施例仅仅是对本发明精神作举例说明。 Specific Example [0037] described herein is merely illustrative for spirit of the invention. 本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。 Those skilled in the art of the present invention can be made to the specific embodiments described various modifications or additions, or a similar alternative embodiment, but without departing from the spirit of the invention or exceed defined in the appended claims range.

[0038] 尽管本文较多地使用了筒状体1、轴瓦11、环形槽12、环形沟槽13、吊装螺孔14、连接通道15、环形止推面2、内润滑结构3、储油深槽31、出油浅沟32、油叶面33、耐磨层34、倾斜面35、供油结构4、供油孔41、止推面润滑结构5、环形阶梯52、耐磨圈53、延伸槽54分油结构 [0038] While the terms are used herein, the cylindrical body 1, bearing 11, annular groove 12, annular groove 13, lifting screw 14, the connecting passage 15, the annular thrust surface 2, the lubrication structure 3, deep oil the groove 31, 32 shallow oil, leaf oil 33, a wear layer 34, the inclined surface 35, the oil supply structure 4, the oil supply hole 41, lubrication of the thrust surface structure 5, the annular step 52, wear ring 53, extending structure oil groove 54

6、环形台阶61、分油槽7、缩口槽8、止推区域9、止推平面91、导油面92等术语,但并不排除使用其它术语的可能性。 6, the annular step 61, sub-tank 7, necking groove 8, the thrust zone 9, a thrust plane 91, the oil guide surface 92 and like terms, but do not exclude the possibility of using other terminology. 使用这些术语仅仅是为了更方便地描述和解释本发明的本质;把它们解释成任何一种附加的限制都是与本发明精神相违背的。 These terms are only used to make it easier to describe and explain the essence of the present invention; interprets them into any additional restrictions are contrary to the spirit of the invention.

Claims (10)

  1. 1.一种汽轮机轴承,包括两个能够相互拼合成筒状体(I)的轴瓦(11),所述的筒状体(I)的两端分别设有环形止推面(2),其特征在于,所述的筒状体(I)内侧设有内润滑结构(3)且内润滑结构⑶与设置在筒状体⑴上且能向内润滑结构⑶供油的供油结构⑷相连,所述的环形止推面⑵上设有止推面润滑结构(5),所述的内润滑结构⑶和止推面润滑结构⑶之间通过设置在筒状体⑴上的分油结构(6)相连,所述的止推面润滑结构⑶包括设置在环形止推面(2)上的若干在圆周方向上均匀间隔分布的分油槽(7),所述的分油槽(7)沿着环形止推面(2)径向延伸,各分油槽⑵的内端分别与所述分油结构(6)相连,各分油槽⑴的外端分别形成缩口槽⑶且缩口槽⑶连通至环形止推面⑵外侧,所述的分油槽(7)将环形止推面(2)分隔成若干止推区域⑶,所述的止推区域⑶分别包括在圆周方向相邻设置 A turbine bearing, comprising two bearing shell (11) can be synthesized with each other to fight the tubular body (I), both ends of the tubular body (I) are respectively provided with an annular thrust face (2), which characterized in that the inward oil supply structure and can be connected ⑶ ⑷ lubricating oil supply structure of the tubular body (I) is provided inside the lubricating structure (3) and the lubricating structure ⑶ provided in the cylindrical body ⑴, provided on said annular thrust face lubricating structure ⑵ thrust face (5), by providing the oil structure (6 in the cylindrical body between said inner ⑴ lubricating structure ⑶ ⑶ lubricating structure and the thrust surface ), said thrust surface includes a plurality of lubrication ⑶ structure in the circumferential direction of the oil groove evenly spaced points (7) distributed in the sub-tank (7) (2) to push the annular stop surface along the annular thrust surface (2) extends radially inner ends of the oil groove ⑵ points are connected to the oil separator structure (6), the sub ⑴ ​​oil groove formed in the outer end of each groove constriction and necking ⑶ ⑶ communicated to the annular groove outer thrust surface ⑵, said sub-tank (7) an annular thrust face (2) separated into a plurality of thrust region ⑶, the thrust ⑶ region disposed adjacent to each in the circumferential direction comprises 止推平面(91)和导油面(92),所述的导油面(92)为自止推平面(91)向分油槽(7)平滑过渡的螺旋面,导油面(92)与止推平面(91)相连一侧的高点位于筒状体(I)径向外侧而低点位于筒状体⑴径向内侧,导油面(92)与分油槽⑵相连一侧的高点位于筒状体(I)径向外侧而低点位于筒状体⑴径向内侧。 Thrust plane (91) and the oil guide surface (92), the oil guide surface (92) is pushed from the stop plane (91) (7) to the surface of a smooth transition points helical oil groove, the oil guide surface (92) and thrust plane (91) is connected to the high point is located on one side of the cylindrical body (I) is located radially outward low ⑴ radially inner cylindrical member, the oil guide surface (92) is connected with the sub-tank side highs ⑵ positioned within the cylindrical body (I) is located radially outward of the cylindrical body low ⑴ radially inward.
  2. 2.根据权利要求1所述的汽轮机轴承,其特征在于,位于筒状体(I) 一端的止推区域(9)的止推平面(91)位于导油面(92)的顺时针方向,位于筒状体⑴另一端的止推区域⑶的止推平面(91)位于导油面(92)的逆时针方向。 2. The bearing of the steam turbine according to claim 1, wherein the thrust zone (9) located in the tubular body (I) of one end of a thrust plane (91) located in the clockwise direction the oil guide surface (92), located in the cylindrical body ⑴ thrust plane (91) the other end of the thrust region located counterclockwise ⑶ oil guide surface (92).
  3. 3.根据权利要求2所述的汽轮机轴承,其特征在于,所述的内润滑结构(3)包括设置在筒状体(I)内壁的若干在圆周方向上均匀间隔分布的储油深槽(31),所述的储油深槽(31)沿着筒状体(I)轴向延伸,储油深槽(31)的长度小于筒状体(I)的长度,在储油深槽(31)的两端对称地设有与分油结构(6)相连通的出油浅沟(32),且出油浅沟(32)的宽度为储油深槽(31)的宽度的八分之一至十六分之一,相邻的储油深槽(31)之间形成位于筒状体(I)内壁的油叶面(33)。 3. The steam turbine bearing according to claim 2, wherein said internal lubricating structure (3) comprises a plurality of circumferentially spaced oil uniformly deep groove disposed on the tubular body (I) of the inner wall ( 31), said oil reservoir deep groove (31) (I) extending axially along the cylindrical body, the length of the deep groove reservoir (31) is less than the length of the cylindrical body (I), the deep grooves in the oil reservoir ( 31 symmetrically provided at both ends) and the oil of structure (6) communicating shallow oil (32), and shallow oil (32) is a deep groove width of the reservoir (31) the width of the eighth to one sixteenth, deep groove is formed adjacent the inner wall of the reservoir is positioned within the cylindrical body (I) leaf oil (33) (31).
  4. 4.根据权利要求3所述的汽轮机轴承,其特征在于,所述的供油结构(4)包括若干开于筒状体(I)上的供油孔(41),所述的供油孔(41)的一端与储油深槽(31)的底部贯通,另一端与外置供油机构相连通。 Turbine Bearing according to claim 3, wherein said oil supply structure (4) comprises a plurality of oil supply holes opened in the oil supply hole (41) on the cylindrical body (the I), according to a bottom (41) one end of the deep groove reservoir (31) through the other end communicates with an external supply mechanism.
  5. 5.根据权利要求4所述的汽轮机轴承,其特征在于,所述的储油深槽(31)的数量为四个且在圆周方向均匀分布,所述的储油深槽(31)的横截面呈圆弧形。 Turbine bearing according to claim 4, characterized in that the number of deep groove reservoir (31) is four and evenly distributed in the circumferential direction of the deep groove reservoir (31) has a cross arc-shaped cross section.
  6. 6.根据权利要求4所述的汽轮机轴承,其特征在于,所述的油叶面(33)上分别浇铸成型有耐磨层(34),所述的耐磨层(34)中部的厚度大于两侧的厚度从而在耐磨层(34)与储油深槽(31)相邻的一侧形成倾斜面(35)。 Turbine bearing according to claim 4, wherein said leaf oil (33) are cast molding with a wear resistant layer (34), said wear layer (34) is greater than the thickness of the middle (35) the thickness of both sides of the inclined surface so as to form the wear layer (34) and the reservoir deep groove (31) adjacent to the side.
  7. 7.根据权利要求3或4或5或6所述的汽轮机轴承,其特征在于,所述的分油结构(6)包括设于内润滑结构⑶与止推面润滑结构⑶之间的环形台阶(61),所述的分油槽⑵的内端与环形台阶(61)相连通,所述的出油浅沟(32)的外端与环形台阶(61)相连通。 The turbine bearings 3 or 4 or 5 or claim 6, wherein said oil structure (6) comprises an annular step between the lubricating structure ⑶ provided with the thrust surface lubricating structure ⑶ (61), said partial inner end of the oil groove ⑵ annular step (61) communicates, the outer end of the shallow oil (32) with an annular step (61) in communication.
  8. 8.根据权利要求4或5或6所述的汽轮机轴承,其特征在于,所述的筒状体(I)的外侧设有环形槽(12),所述的环形槽(12)内设有环形沟槽(13),所述的供油孔(41)位于环形沟槽(13)内;所述的轴瓦(11)上分别设有至少一个吊装螺孔(14)。 Turbine Bearing according claim 4 or 5, or claim 6, wherein said outer tubular body (I) is provided with an annular groove (12), said annular groove (12) is provided with an annular groove (13), said oil supply hole (41) located in an annular groove (13); said bush (11) are provided with at least one lifting screw (14).
  9. 9.根据权利要求4或5或6所述的汽轮机轴承,其特征在于,所述的筒状体(I)内设有能将相邻的两个供油孔(41)中部相互连通的连接通道(15)。 9. The turbine bearing 4 or 5 or claim 6, wherein said tubular body (I) features a central connecting two interconnected adjacent to the oil supply hole can (41) channel (15).
  10. 10.根据权利要求1-6中任意一项所述的汽轮机轴承,其特征在于,所述的止推面润滑结构(5)与筒状体(I)端部之间形成位于止推面润滑结构(5)外围且低于止推面润滑结构(5)的环形阶梯(52),所述的环形阶梯(52)上浇铸有与止推面润滑结构(5)齐平的耐磨圈(53),所述的耐磨圈(53)上设有与缩口槽⑶相连通的延伸槽(54);所述的分油槽⑵为矩形槽且分油槽(7)的外端两肩分别呈圆弧形;所述的轴瓦(11)通过紧固螺栓固连在一起。 According to any one of claims 1 to 6 in the turbine bearings, characterized in that a thrust surface located between the end portion of the lubricating thrust face lubricating structure (5) and said cylindrical body (I) structure (5) and lower than the peripheral surface of the thrust lubricating structure (5) an annular step (52), and cast with a thrust face lubricating structure (5) is flush with the wear ring on an annular step (52) ( 53), the wear ring is provided with a constriction communicating groove ⑶ extending slot (54) (53); the sub tank and the oil groove ⑵ rectangular sub tank (7), respectively outer ends of the shoulders circular arc; the bush (11) secured together by fastening bolt.
CN 201610996982 2016-11-11 2016-11-11 Turbine Bearing CN106438679B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025876A1 (en) * 1979-07-13 1981-02-05 Hitachi Ltd Keilflaechen-thrust bearing
JPS58134221A (en) * 1982-02-04 1983-08-10 Toshiba Corp Oil film control device for thrust bearing
US20020181811A1 (en) * 2001-06-05 2002-12-05 Aguilar Scott Grover Diverted flow thrust bearing
CN1580594A (en) * 2003-03-21 2005-02-16 西加特技术有限责任公司 Method and system for withstanding shock in a spindle motor bearing
JP2011085218A (en) * 2009-10-16 2011-04-28 Mitsubishi Heavy Ind Ltd Planetary bearing structure
CN203239760U (en) * 2013-05-06 2013-10-16 浙江正盛轴瓦有限责任公司 Shaft sleeve of rolling mill
CN104083126A (en) * 2014-07-21 2014-10-08 广东新宝电器股份有限公司 Dust collector with pre-filtering and water-retaining function

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025876A1 (en) * 1979-07-13 1981-02-05 Hitachi Ltd Keilflaechen-thrust bearing
JPS5614620A (en) * 1979-07-13 1981-02-12 Hitachi Ltd Thrust bearing
JPS58134221A (en) * 1982-02-04 1983-08-10 Toshiba Corp Oil film control device for thrust bearing
US20020181811A1 (en) * 2001-06-05 2002-12-05 Aguilar Scott Grover Diverted flow thrust bearing
CN1580594A (en) * 2003-03-21 2005-02-16 西加特技术有限责任公司 Method and system for withstanding shock in a spindle motor bearing
JP2011085218A (en) * 2009-10-16 2011-04-28 Mitsubishi Heavy Ind Ltd Planetary bearing structure
CN203239760U (en) * 2013-05-06 2013-10-16 浙江正盛轴瓦有限责任公司 Shaft sleeve of rolling mill
CN104083126A (en) * 2014-07-21 2014-10-08 广东新宝电器股份有限公司 Dust collector with pre-filtering and water-retaining function

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