WO2018107981A1 - 一种汽轮发电机全路径密封结构及装配方法 - Google Patents

一种汽轮发电机全路径密封结构及装配方法 Download PDF

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Publication number
WO2018107981A1
WO2018107981A1 PCT/CN2017/114257 CN2017114257W WO2018107981A1 WO 2018107981 A1 WO2018107981 A1 WO 2018107981A1 CN 2017114257 W CN2017114257 W CN 2017114257W WO 2018107981 A1 WO2018107981 A1 WO 2018107981A1
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Prior art keywords
sealing
oil passage
transition ring
sealing structure
seat
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PCT/CN2017/114257
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English (en)
French (fr)
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官永胜
陈文学
胡德剑
朱林重
秦川
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东方电气集团东方电机有限公司
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Priority to GB1908411.0A priority Critical patent/GB2571486B/en
Publication of WO2018107981A1 publication Critical patent/WO2018107981A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers

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  • the invention relates to the technical field of steam turbine generator sealing, in particular to a full-path sealing structure and assembling method of a steam turbine generator.
  • the steam turbine generator mainly adopts a single-flow ring, a double-flow ring or a three-flow ring sealing structure.
  • the sealing structure mainly has the defect that the sealing path is not completely closed, especially in the horizontal joint surface thereof.
  • the part can not fully guarantee the effective barrier between the inner hydrogen side (high pressure zone) and the outer side (low pressure zone) of the turbine generator, so that part of the hydrogen can flow from the inner hydrogen side (high pressure zone) of the turbine generator to the outside of the machine. (Low-pressure zone), which leads to defects such as air leakage and oil leakage during the operation of the steam turbine generator, especially at the horizontal joint surface, the oil leakage phenomenon also occurs frequently.
  • the technical problem to be solved by the present invention is that, in view of the problems existing in the prior art, a full-path sealing structure and an assembly method of a steam turbine generator are provided, and the sealing reliability at the horizontal joint surface of the steam turbine generator is improved.
  • a full-path sealing structure of a steam turbine generator comprising a transition ring, a sealing plate, an end cover, a sealing seat, and a rotating shaft and a sealing seat cover, the sealing seat and the sealing
  • the seat cover forms a sealing structure with the rotating shaft
  • the sealing seat forms a sealing structure with the sealing seat cover.
  • the transition ring forms a sealing structure with the end cover and the sealing seat through the sealing plate.
  • the method further includes a first sealing strip, a mounting groove is formed in the sealing seat, the first sealing strip is engaged in the mounting groove on the sealing seat, and a sealing structure is formed between the first sealing strip and the sealing plate .
  • the transition ring and the sealing seat are provided with a main oil passage which penetrates the same, and a first oil passage which penetrates the main oil passage is opened on the transition ring, and the first sealing strip and the first oil passage A sealing structure is formed therebetween, and the main oil passage and the first oil passage are filled with a sealing oil.
  • a first buffer tank is defined in the transition ring, and the first buffer tank is mutually penetrated with the main oil passage and the first oil passage.
  • the method further includes a second sealing strip, the mounting cover is opened on the end cover, and the second sealing strip is embedded in the end cover In the upper mounting groove, a sealing structure is formed between the second sealing strip and the sealing plate.
  • the transition ring and the sealing seat are provided with a main oil passage which penetrates the same, and a second oil passage which penetrates the main oil passage is opened on the transition ring, and the second sealing strip and the second oil passage A sealing structure is formed between the main oil passage and the second oil passage.
  • a second buffer tank is defined in the transition ring, and the second buffer tank is mutually penetrated with the main oil passage and the second oil passage.
  • the invention relates to a method for assembling a full-path sealing structure of a steam turbine generator.
  • the full-path sealing structure of the steam turbine generator comprises a transition ring, an end cover, a sealing seat and a rotating shaft and a sealing seat cover, and the assembling method comprises the following steps:
  • the sealing seat is installed to form a sealing structure between the sealing seat and the rotating shaft;
  • the sealing seat cover is installed, so that the sealing seat cover forms a sealing structure with the sealing seat and the rotating shaft respectively;
  • the transition ring and the sealing plate are fixedly connected and integrated, and the transition ring is respectively fixedly connected with the end cover and the sealing seat, and the sealing plate forms a sealing structure with the end cover and the sealing seat respectively.
  • the transition ring and the sealing seat process a second horizontal joint surface research area on the transition ring, and the first horizontal joint surface research area is processed on the sealing seat, and when the transition After the ring and the sealing seat are assembled, the sum of the actual contact areas of the first horizontal joint surface research area and the second horizontal joint surface research area occupies the first horizontal joint surface research area and the first The horizontal joint surface of the two horizontal joints is more than 90% of the sum of the area of the area.
  • the transition ring, the end cover and the sealing seat are provided with a mounting groove on the end cover before the assembly, and a second sealing strip is embedded in the mounting groove; a mounting groove is formed in the sealing seat, and A first sealing strip is embedded in the mounting groove, and a main oil passage that penetrates through the joint portion of the transition ring and the sealing seat is opened, and the first horizontal joint surface research area and the second horizontal joint surface are covered by the main sealing area.
  • a first oil passage and a second oil passage respectively intersecting with the main oil passage are respectively disposed on the transition ring, and the second horizontal joint surface research area covers the first oil passage and the second oil passage
  • the first sealing strip forms a sealing structure with the first oil passage and the sealing plate, respectively
  • the second sealing strip and the second sealing strip respectively
  • the oil passage and the sealing plate form a sealing structure, and the sealing oil is filled in the main oil passage, the first oil passage, and the second oil passage.
  • the beneficial effects of the present invention are: since the sealing seat and the sealing seat cover respectively form a sealing structure with the rotating shaft, a sealing structure is formed between the sealing seat and the sealing seat cover, and the transition ring passes through the sealing plate and the end cover respectively
  • the sealing seat forms a sealing structure, so that the steam turbine generator forms a full-path closed sealing structure at the horizontal joint surface, which can fully ensure the barrier between the hydrogen inside the turbo generator and the air outside the turbo generator.
  • the hydrogen, sealing oil, etc. are effectively prevented from leaking from the hydrogen side (high pressure zone) of the generator to the outside of the machine (low pressure zone), so that the sealing reliability at the horizontal joint surface of the turbo generator is greatly improved.
  • FIG. 1 is a cross-sectional view showing a full-path sealing structure of a turbo generator according to the present invention.
  • the full-path sealing structure of the turbo generator shown in FIG. 1 includes a transition ring 1, a sealing plate 5, an end cover 8, a sealing seat 11, a rotating shaft 12, a sealing seat cover 13 and a sealing shoe 17, and the sealing plate 5 is preferably
  • the sealing seat 11 , the sealing seat cover 13 and the sealing shoe 17 respectively form a sealing structure with the rotating shaft 12
  • the sealing seat 11 and the sealing seat cover 13 form a sealing structure by the sealing bush 17
  • the transition ring 1 forms a sealing structure with the end cover 8 and the sealing seat 11 respectively through the sealing plate 5, wherein the transition ring 1 and the end cover 8 and the sealing seat 11 and the transition ring 1 can be respectively fixed by bolts, and the bolts are respectively Pass through the sealing plate 5.
  • the inner side of the sealing seat 11 is an inner hydrogen side
  • the outer side of the transition ring 1 is an outer side of the machine, wherein the inner hydrogen side is mainly high-pressure hydrogen, belonging to a high-voltage area of the generator, and the outer side of the machine is an air side, belonging to a low voltage of the generator. Area.
  • a mounting groove may be opened in the end cover 8, and a second sealing strip 6 is press-fitted in the mounting groove on the end cover 8, and the A sealing structure is formed between the second sealing strip 6 and the sealing plate 5.
  • the cross-sectional shape of the second weather strip 6 is preferably flared so that the second weather strip 6 is securely engaged in the mounting groove on the end cap 8.
  • a mounting groove may be formed in the sealing seat 11, and the first sealing strip 7 is press-fitted in the mounting groove on the sealing seat 11, and A sealing structure is formed between a sealing strip 7 and the sealing plate 5.
  • the cross-sectional shape of the first weather strip 7 is preferably flared so that the first weather strip 7 is securely engaged in the mounting groove on the sealing seat 11.
  • the first sealing strip 7 and the second sealing strip 6 are preferably annular rubber strips.
  • first buffer tank 16 and the second buffer tank 3 may be opened on the transition ring 1 , and the first buffer tank 16 penetrates with the main oil passage 10 and the first oil passage 2 respectively, and the second The buffer tank 3 penetrates the main oil passage 10 and the second oil passage 4, respectively.
  • the first buffer tank 16 adopts a strip-shaped groove, and two ends thereof respectively form a circular arc-shaped transition portion; preferably, the second buffer tank 3 adopts a circular groove.
  • a main buffer tank 14 can be formed on the sealing seat 11, the main buffer tank 14 and the main oil passage 10 penetrate each other, and a sealing structure is formed between the first sealing strip 7 and the main buffer tank 14, as shown in FIG. Show.
  • a "back" shaped oil groove sealing structure is formed between the transition ring 1 and the sealing seat 11. Further enhanced by the "back" shaped oil sump sealing structure combined with the embedded sealing structure formed by the first sealing strip 7 and the sealing seat 11 and the embedded sealing structure formed by the second sealing strip 6 and the end cap 8
  • the full path closure of the turbine generator at the horizontal joint surface ensures the barrier between the hydrogen inside the turbine generator and the air outside the turbine generator, effectively preventing hydrogen, seal oil, etc. from the generator.
  • the hydrogen side (high pressure zone) leaks to the outside of the machine (low pressure zone), ensuring the reliability of the seal at the horizontal joint surface when the turbine generator is operating.
  • the full-path sealing structure of the above steam turbine generator can be carried out by the following assembly method, specifically,
  • the sealing seat 11 is mounted, and a sealing structure is formed between the sealing seat 11 and the rotating shaft 12.
  • sealing seat cover 13 is mounted, and the sealing seat cover 13 is formed into a sealing structure with the sealing seat 11 and the rotating shaft 12, respectively.
  • transition ring 1 is fixedly coupled to the sealing plate 5, and usually, the sealing plate 5 is directly bonded to the transition ring 1.
  • transition ring 1 is fixedly connected to the end cover 8 and the sealing seat 11 through the connecting bolts, and the sealing plate 5 forms a sealing structure with the end cover 8 and the sealing seat 11, respectively.
  • the full-path sealing structure of the turbo generator of the invention has fewer components and simple assembly between the relevant components, so that the overall structure of the full-path sealing structure of the turbo generator is relatively simple and compact, and the assembly is convenient. After the relevant components are assembled, the sealing reliability of the turbine generator at the horizontal joint surface is also greatly improved.
  • the transition ring 1, the end cover 8, and the sealing seat 11 are provided with a mounting groove on the end cover 8 before assembly, and in the mounting groove Engaging the second sealing strip 6; forming a mounting groove in the sealing seat 11, and engaging the first sealing strip 7 in the mounting groove, and opening a main oil passage 10 penetrating through the joint portion of the transition ring 1 and the sealing seat 11
  • the transition ring 1 further has a first oil passage 2 and a second oil passage 4 which are respectively penetrated from the main oil passage 10; in addition, processed on the transition ring 1
  • the second horizontal joint surface research area 15 is formed, and the first horizontal joint surface research area 9 is processed on the sealing seat 11, where the "study fit" refers to the metal for planar roughness processing of the metal mating surface.
  • the processing technology aims to improve the actual contact area when the metal mating surfaces are mated.
  • the first horizontal joint surface research area 9 and the second horizontal joint surface research area 15 cover the main oil passage 10, and the second horizontal joint surface research area 15 covers the first oil passage 2 and the second In the oil passage 4, a sealant may be added to the contact surface of the first horizontal joint surface and the second horizontal joint surface 15 for the joint surface.
  • the first sealing strip 7 forms a sealing structure with the first oil passage 2 and the sealing plate 5, respectively, and the second sealing strip 6 respectively
  • the two oil passages 4 and the sealing plate 5 form a sealing structure; and the sum of the actual contact areas of the first horizontal joint surface research area 9 and the second horizontal joint surface research area 15 is preferably The sum of the areas of the first horizontal joint surface research area 9 and the second horizontal joint surface area 15 is 90% or more.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

一种汽轮发电机全路径密封结构及装配方法，所述汽轮发电机全路径密封结构包括过渡环(1)、密封板(5)、端盖(8)、密封座(11)以及转轴(12)和密封座盖(13)，密封座(11)、密封座盖(13)分别与转轴(12)形成密封结构，密封座(11)与密封座盖(13)之间形成密封结构，过渡环(1)通过密封板(5)分别与端盖(8)、密封座(11)形成密封结构。该结构可以使汽轮发电机油密封结构在水平合缝面处形成全路径封闭的密封结构，能够有效防止氢气从发电机内氢侧(高压区)泄漏流向机外侧(低压区)，使汽轮发电机在水平合缝面处的密封可靠性得以大幅度提高，具有结构简单、紧凑、装配方便等突出优点。

Description

一种汽轮发电机全路径密封结构及装配方法 技术领域
本发明涉及汽轮发电机密封技术领域，尤其是涉及一种汽轮发电机全路径密封结构及装配方法。
背景技术
目前的汽轮发电机主要采用单流环、双流环或三流环密封结构，这种密封结构在汽轮发电机工作过程中主要存在密封路径不完全封闭的缺陷，尤其是在其水平合缝面部位，不能充分保证汽轮发电机的内氢侧(高压区)与机外侧(低压区)之间的有效阻隔，使部分氢气得以从汽轮发电机的内氢侧(高压区)流向机外侧(低压区)，从而导致汽轮发电机工作时存在漏气、漏油等缺陷，尤其是在水平合缝面处，漏油现象也比较频繁发生。而一旦发生漏气、漏油等缺陷时，将直接导致汽轮发电机的补氢量大增。由于氢气是最轻的气体，其渗透性和扩散性均很强，随着氢气泄漏量的不断增加，将影响到汽轮发电机的出力，甚至引起爆炸，从而造成安全事故。
发明内容
本发明要解决的技术问题是：针对现有技术存在的问题，提供一种汽轮发电机全路径密封结构及装配方法，提高汽轮发电机工作时在水平合缝面处的密封可靠性。
本发明要解决的技术问题采用以下技术方案来实现：一种汽轮发电机全路径密封结构，包括过渡环、密封板、端盖、密封座以及转轴和密封座盖，所述密封座、密封座盖分别与转轴形成密封结构，所述密封座与密封座盖之间形成密封结构，所述过渡环通过密封板分别与端盖、密封座形成密封结构。
优选地，还包括第一密封条，在密封座上开设安装槽，所述第一密封条嵌接在密封座上的安装槽中，且所述第一密封条与密封板之间形成密封结构。
优选地，所述过渡环与密封座之间设置相互贯通的主油道，在过渡环上开设与主油道相互贯通的第一支油道，所述第一密封条与第一支油道之间形成密封结构，且所述主油道、第一支油道中填充密封油。
优选地，所述过渡环上开设第一缓冲槽，所述第一缓冲槽分别与主油道、第一支油道相互贯通。
优选地，还包括第二密封条，在端盖上开设安装槽，所述第二密封条嵌接在端盖 上的安装槽中，且所述第二密封条与密封板之间形成密封结构。
优选地，所述过渡环与密封座之间设置相互贯通的主油道，在过渡环上开设与主油道相互贯通的第二支油道，所述第二密封条与第二支油道之间形成密封结构，且所述主油道、第二支油道中填充密封油。
优选地，所述过渡环上开设第二缓冲槽，所述第二缓冲槽分别与主油道、第二支油道相互贯通。
一种汽轮发电机全路径密封结构的装配方法，所述的汽轮发电机全路径密封结构包括过渡环、端盖、密封座以及转轴和密封座盖，其装配方法包括如下步骤：
第1步，安装密封座，使密封座与转轴之间形成密封结构；
第2步，安装密封座盖，使密封座盖分别与密封座、转轴形成密封结构；
第3步，将过渡环与密封板固定连接成一体，再将过渡环分别与端盖、密封座连接固定，且密封板分别与端盖、密封座形成密封结构。
优选地，所述的过渡环、密封座在装配前，在过渡环上加工出第二水平合缝面研配区域，在密封座上加工出第一水平合缝面研配区域，且当过渡环、密封座装配到位后，所述第一水平合缝面研配区域、第二水平合缝面研配区域的实际接触面积之和占到所述第一水平合缝面研配区域与第二水平合缝面研配区域面积之和的90％以上。
优选地，所述的过渡环、端盖、密封座在装配前，在端盖上开设安装槽，并在该安装槽中嵌接第二密封条；在密封座上开设安装槽，并在该安装槽中嵌接第一密封条，在过渡环与密封座配合部位开设相互贯通的主油道，且所述第一水平合缝面研配区域、第二水平合缝面研配区域覆盖主油道，在过渡环上还开设分别与主油道相互贯通的第一支油道、第二支油道，且所述第二水平合缝面研配区域覆盖第一支油道、第二支油道；所述过渡环、端盖、密封座在装配到位后，所述第一密封条分别与第一支油道、密封板形成密封结构，所述第二密封条分别与第二支油道、密封板形成密封结构，在主油道、第一支油道、第二支油道中填充密封油。
与现有技术相比，本发明的有益效果是：由于密封座、密封座盖分别与转轴形成密封结构，密封座与密封座盖之间形成密封结构，且过渡环通过密封板分别与端盖、密封座形成密封结构，从而使得汽轮发电机在水平合缝面处形成全路径封闭的密封结构，能够充分保证汽轮发电机内侧的氢气与汽轮发电机外侧的空气之间的阻隔，有效地防止了氢气、密封油等从发电机内氢侧(高压区)泄漏流向机外侧(低压区)，使汽轮发电机工作时在水平合缝面处的密封可靠性得以大幅度提高。
附图说明
图1为本发明一种汽轮发电机全路径密封结构的剖视图。
图中标记：1-过渡环，2-第一支油道，3-第二缓冲槽，4-第二支油道，5-密封板，6-第二密封条，7-第一密封条，8-端盖，9-第一水平合缝面研配区域，10-主油道，11-密封座，12-转轴，13-密封座盖，14-主缓冲槽，15-第二水平合缝面研配区域，16-第一缓冲槽，17-密封瓦。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，下面结合附图和具体实施例对本发明进行详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1所示的汽轮发电机全路径密封结构，包括过渡环1、密封板5、端盖8、密封座11、转轴12以及密封座盖13和密封瓦17，所述密封板5优选为橡胶板，所述的密封座11、密封座盖13、密封瓦17分别与转轴12形成密封结构，所述的密封座11与密封座盖13之间通过密封瓦17形成密封结构，所述过渡环1通过密封板5分别与端盖8、密封座11形成密封结构，其中的过渡环1与端盖8之间、密封座11与过渡环1之间可以分别通过螺栓连接固定，且螺栓穿过密封板5。所述密封座11的内侧为内氢侧，所述过渡环1的外侧为机外侧，其中，内氢侧主要是高压氢气，属于发电机高压区，而机外侧为空气侧，属于发电机低压区。
进一步地，为了提高过渡环1与端盖8之间的密封可靠性，可以在端盖8上开设安装槽，并在该端盖8上的安装槽中压装第二密封条6，且第二密封条6与密封板5之间形成密封结构。所述第二密封条6的截面形状优选为喇叭形，以便第二密封条6牢固地嵌接在端盖8上的安装槽中。同样地，为了提高过渡环1与密封座11之间的密封可靠性，可以在密封座11上开设安装槽，并在该密封座11上的安装槽中压装第一密封条7，且第一密封条7与密封板5之间形成密封结构。所述第一密封条7的截面形状优选为喇叭形，以便第一密封条7牢固地嵌接在密封座11上的安装槽中。所述的第一密封条7、第二密封条6优选采用环形的橡胶条。
在汽轮发电机工作时，其内氢侧的高压氢气的渗透性、扩散性均很强，为了有效避免发电机内氢侧的高压氢气泄漏至发电机低压区的机外侧，如图1所示，还可以在过渡环1与密封座11之间设置相互贯通的主油道10，并在过渡环1上开设分别与主油道10相互贯通的第一支油道2、第二支油道4，在密封板5上开设相应的贯通口， 以使第一密封条7与第一支油道2之间形成密封结构，且第二密封条6与第二支油道4之间形成密封结构，在主油道10、第一支油道2、第二支油道4中填充密封油。
进一步地，在过渡环1上还可以开设第一缓冲槽16、第二缓冲槽3，所述第一缓冲槽16分别与主油道10、第一支油道2相互贯通，所述第二缓冲槽3分别与主油道10、第二支油道4相互贯通。优选地，所述第一缓冲槽16采用条形槽，其两端分别形成圆弧形过渡部；优选地，所述第二缓冲槽3采用圆形槽。另外，在密封座11上可以开设主缓冲槽14，所述的主缓冲槽14与主油道10相互贯通，且第一密封条7与主缓冲槽14之间形成密封结构，如图1所示。采用这样的结构设计后，使得过渡环1与密封座11之间形成“回”形油槽密封结构。通过“回”形油槽密封结构与由第一密封条7与密封座11所形成的嵌入式密封结构以及由第二密封条6与端盖8所形成的嵌入式密封结构相结合，进一步地增强了汽轮发电机在水平合缝面处的全路径封闭，确保汽轮发电机内侧的氢气与汽轮发电机外侧的空气之间的阻隔，有效地防止了氢气、密封油等从发电机内氢侧(高压区)泄漏流向机外侧(低压区)，从而确保汽轮发电机工作时在水平合缝面处的密封可靠性。
上述汽轮发电机全路径密封结构，可以采用如下装配方法进行，具体地，
首先，安装密封座11，并使密封座11与转轴12之间形成密封结构。
其次，安装密封座盖13，并使密封座盖13分别与密封座11、转轴12形成密封结构。
接下来，将过渡环1与密封板5固定连接成一体，通常，是将密封板5直接粘接到过渡环1上。
最后，将过渡环1通过联接螺栓分别与端盖8、密封座11连接固定，密封板5分别与端盖8、密封座11形成密封结构。
本发明的汽轮发电机全路径密封结构的组成部件较少，且各相关组成部件之间的装配简单，因此，使得汽轮发电机全路径密封结构的整体构造相对简单、紧凑，且装配方便，在各相关组成部件装配到位后，汽轮发电机在水平合缝面处的密封可靠性也得以大幅度提高。为了进一步增强汽轮发电机全路径密封结构的密封性能，优选地，所述过渡环1、端盖8、密封座11在装配前，在端盖8上开设安装槽，并在该安装槽中嵌接第二密封条6；在密封座11上开设安装槽，并在该安装槽中嵌接第一密封条7，在过渡环1与密封座11配合部位开设相互贯通的主油道10，所述过渡环1上还开设分别与主油道10相互贯通的第一支油道2、第二支油道4；另外，在过渡环1上加工 出第二水平合缝面研配区域15，在密封座11上加工出第一水平合缝面研配区域9，此处的“研配”是指对金属配合面进行平面粗糙度加工的金属加工工艺，目的是提高金属配合面相互配合时的实际接触面积。所述的第一水平合缝面研配区域9、第二水平合缝面研配区域15覆盖主油道10，第二水平合缝面研配区域15覆盖第一支油道2、第二支油道4，在第一水平合缝面研配区域9、第二水平合缝面研配区域15的接触贴合面还可以加密封胶。当过渡环1、端盖8、密封座11在装配到位后，所述第一密封条7分别与第一支油道2、密封板5形成密封结构，所述第二密封条6分别与第二支油道4、密封板5形成密封结构；且其中的第一水平合缝面研配区域9、第二水平合缝面研配区域15的实际接触面积之和最好是占到所述第一水平合缝面研配区域9与第二水平合缝面研配区域15的面积之和的90％以上。通过对汽轮发电机水平合缝面提出研配接触面积、加密封胶的要求，可以更好地保证汽轮发电机全路径密封结构对发电机内氢侧的氢气与机外侧的空气之间的有效阻隔，并且能够避免汽轮发电机在水平合缝面处的漏油现象。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，应当指出的是，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种汽轮发电机全路径密封结构，包括过渡环(1)、端盖(8)、密封座(11)以及转轴(12)和密封座盖(13)，所述密封座(11)、密封座盖(13)分别与转轴(12)形成密封结构，所述密封座(11)与密封座盖(13)之间形成密封结构，其特征在于：还包括密封板(5)，所述过渡环(1)通过密封板(5)分别与端盖(8)、密封座(11)形成密封结构。
  2. 根据权利要求1所述的汽轮发电机全路径密封结构，其特征在于：还包括第一密封条(7)，在密封座(11)上开设安装槽，所述第一密封条(7)嵌接在密封座(11)上的安装槽中，且所述第一密封条(7)与密封板(5)之间形成密封结构。
  3. 根据权利要求2所述的汽轮发电机全路径密封结构，其特征在于：所述过渡环(1)与密封座(11)之间设置相互贯通的主油道(10)，在过渡环(1)上开设与主油道(10)相互贯通的第一支油道(2)，所述第一密封条(7)与第一支油道(2)之间形成密封结构，且所述主油道(10)、第一支油道(2)中填充密封油。
  4. 根据权利要求3所述的汽轮发电机全路径密封结构，其特征在于：所述过渡环(1)上开设第一缓冲槽(16)，所述第一缓冲槽(16)分别与主油道(10)、第一支油道(2)相互贯通。
  5. 根据权利要求1所述的汽轮发电机全路径密封结构，其特征在于：还包括第二密封条(6)，在端盖(8)上开设安装槽，所述第二密封条(6)嵌接在端盖(8)上的安装槽中，且所述第二密封条(6)与密封板(5)之间形成密封结构。
  6. 根据权利要求5所述的汽轮发电机全路径密封结构，其特征在于：所述过渡环(1)与密封座(11)之间设置相互贯通的主油道(10)，在过渡环(1)上开设与主油道(10)相互贯通的第二支油道(4)，所述第二密封条(6)与第二支油道(4)之间形成密封结构，且所述主油道(10)、第二支油道(4)中填充密封油。
  7. 根据权利要求6所述的汽轮发电机全路径密封结构，其特征在于：所述过渡环(1)上开设第二缓冲槽(3)，所述第二缓冲槽(3)分别与主油道(10)、第二支油道(4)相互贯通。
  8. 一种汽轮发电机全路径密封结构的装配方法，其特征在于：所述的汽轮发电机全路径密封结构包括过渡环(1)、端盖(8)、密封座(11)以及转轴(12)和密封座盖(13)，其装配方法包括如下步骤：
    第1步，安装密封座(11)，使密封座(11)与转轴(12)之间形成密封结构；
    第2步，安装密封座盖(13)，使密封座盖(13)分别与密封座(11)、转轴(12)形成密封结构；
    第3步，将过渡环(1)与密封板(5)固定连接成一体，再将过渡环(1)分别与端盖(8)、密封座(11)连接固定，且密封板(5)分别与端盖(8)、密封座(11)形成密封结构。
  9. 根据权利要求8所述的汽轮发电机全路径密封结构的装配方法，其特征在于：所述的过渡环(1)、密封座(11)在装配前，在过渡环(1)上加工出第二水平合缝面研配区域(15)，在密封座(11)上加工出第一水平合缝面研配区域(9)，且当过渡环(1)、密封座(11)装配到位后，所述第一水平合缝面研配区域(9)、第二水平合缝面研配区域(15)的实际接触面积之和占到所述第一水平合缝面研配区域(9)与第二水平合缝面研配区域(15)面积之和的90％以上。
  10. 根据权利要求9所述的汽轮发电机全路径密封结构的装配方法，其特征在于：所述的过渡环(1)、端盖(8)、密封座(11)在装配前，在端盖(8)上开设安装槽，并在该安装槽中嵌接第二密封条(6)；在密封座(11)上开设安装槽，并在该安装槽中嵌接第一密封条(7)，在过渡环(1)与密封座(11)配合部位开设相互贯通的主油道(10)，且所述第一水平合缝面研配区域(9)、第二水平合缝面研配区域(15)覆盖主油道(10)，在过渡环(1)上还开设分别与主油道(10)相互贯通的第一支油道(2)、第二支油道(4)，且所述第二水平合缝面研配区域(15)覆盖第一支油道(2)、第二支油道(4)；所述过渡环(1)、端盖(8)、密封座(11)在装配到位后，所述第一密封条(7)分别与第一支油道(2)、密封板(5)形成密封结构，所述第二密封条(6)分别与第二支油道(4)、密封板(5)形成密封结构，在主油道(10)、第一支油道(2)、第二支油道(4)中填充密封油。
PCT/CN2017/114257 2016-12-14 2017-12-01 一种汽轮发电机全路径密封结构及装配方法 WO2018107981A1 (zh)

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