WO2018107986A1 - 一种应用于汽轮发电机的氢气密封结构 - Google Patents

一种应用于汽轮发电机的氢气密封结构 Download PDF

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WO2018107986A1
WO2018107986A1 PCT/CN2017/114365 CN2017114365W WO2018107986A1 WO 2018107986 A1 WO2018107986 A1 WO 2018107986A1 CN 2017114365 W CN2017114365 W CN 2017114365W WO 2018107986 A1 WO2018107986 A1 WO 2018107986A1
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sealing
pressing plate
hydrogen
sealing structure
sealing member
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PCT/CN2017/114365
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English (en)
French (fr)
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官永胜
陈文学
胡德剑
郑威
张干
朱林重
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东方电气集团东方电机有限公司
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Publication of WO2018107986A1 publication Critical patent/WO2018107986A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating

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  • the invention relates to the technical field of hydrogen sealing of a steam turbine generator, in particular to a hydrogen sealing structure applied to a steam turbine generator.
  • the main heat exchange component of a turbogenerator is a hydrogen cooler (referred to as "hydrogen cooler”, the same below), in which the cooling medium is hydrogen.
  • hydrogen is the lightest gas, it is highly permeable and diffusible, and it is easy to cause hydrogen leakage in a pressure vessel filled with hydrogen. As the amount of hydrogen leakage increases, it will affect the output of the turbine generator and even cause an explosion, resulting in a safety accident. Therefore, the generator in operation has strict requirements for the leakage of hydrogen.
  • the current hydrogen cooler structural design has the following defects in the sealing structure: First, in the actual installation process, it is easy to damage the sealing strip in the vertical direction, the field installation process is poor, and the operability is also poor, resulting in The actual sealing effect is not good. Second, in the actual use process, when the generator capacity is increased and the hydrogen pressure is increased, the sealing effect is completely out of use; and as the hydrogen pressure is continuously increased, the hydrogen sealing problem will be more prominent. .
  • the technical problem to be solved by the present invention is that, in view of the problems existing in the prior art, a hydrogen sealing structure applied to a steam turbine generator is provided, and the safety and reliability of the steam turbine generator during operation are improved.
  • a hydrogen sealing structure applied to a steam turbine generator comprising a bead, a compression bolt, a lower pressing plate, a sealing platen, a hydrogen cooler body and a generator casing
  • the upper tube plate and the lower tube tube are fixedly connected at opposite ends of the body of the hydrogen cooler, and the upper tube tube forms a sealed connection with the generator casing, and the lower plate and the generator casing are formed.
  • a fixed sealing structure a slit is formed at a free end of the lower pressing plate, a first sealing member is installed in the slit, the pressing bolt is connected to the lower pressing plate after the pressing bar is fixed, and the pressing bar is pressed against the sealing pressing plate, and the sealing pressing plate is pressed first a seal, and a sliding seal structure is formed between the first seal and the lower tube sheet.
  • a sealing member mounting slit is formed in a vertical direction of the lower pressing plate, a second sealing member is disposed in the sealing member mounting slit, and a sliding sealing structure is formed between the second sealing member and the lower receiving tube sheet.
  • a sealing member mounting slit is formed in a horizontal direction of the lower pressing plate, and the sealing member is installed in the slit
  • a third seal is disposed, and the third seal forms a fixed sealing structure with the generator casing.
  • a through hole is formed in the lower pressing plate, and a screw hole is formed in the generator casing, and the fastening bolt penetrates the through hole on the lower pressing plate and the threaded hole on the generator casing
  • a threaded movable connection is formed therebetween, and a clearance fit is formed between the fastening bolt and the through hole on the lower pressure plate.
  • the cross-sectional shape of the bead is L-shaped, and a cavity structure is formed between the sealing platen, the lower pressing plate and the bead.
  • the hardness of the sealing platen is greater than the hardness of the first sealing member.
  • the invention has the beneficial effects that a sealing connection is formed between the upper tube plate and the generator casing, and a fixed sealing structure is formed between the lower pressing plate and the generator casing, and the first sealing member and the first sealing member are
  • the sliding sealing structure is formed between the lower tube sheets, thereby improving the sealing reliability of the sealing surface of the hydrogen cooler and the generator casing in the horizontal direction and the vertical direction, effectively preventing hydrogen from leaking from the inside of the machine to the outside of the machine, and then Effectively improve the safety and reliability of the turbine generator during operation.
  • FIG. 1 is a schematic view showing the construction of a hydrogen sealing structure applied to a steam turbine generator according to the present invention.
  • Figure 2 is a partial enlarged view of a portion A in Figure 1.
  • the hydrogen sealing structure applied to the turbo generator shown in FIG. 1 and FIG. 2 specifically includes a bead 13, a pressing bolt 14, a lower pressing plate 7, a sealing platen 8, a hydrogen cooler body 4, and a generator casing 6,
  • the upper tube plate 5 and the lower tube tube 2 are fixedly connected to opposite ends of the hydrogen cooler body 4, and the upper tube sheet 5 and the generator casing 6 form a fixed sealing connection.
  • the water tank 1 is fixedly connected to the bottom of the lower tube sheet 2, and the cooling water pipe 3 is fixedly connected between the upper tube sheet 5 and the lower tube sheet 2, and the cooling water tube 3 is in communication with the water tank 1.
  • a seal mounting slit is formed in the horizontal direction of the lower pressing plate 7, and a third sealing member 11 is provided in the sealing member mounting slit, and the third sealing member 11 passes through the fastening bolt 12 and the generator casing 6
  • a fixed sealing structure is formed between them.
  • a through hole may be formed in the lower pressing plate 7, and a threaded hole is formed in the generator casing 6.
  • the fastening bolt 12 penetrates through the through hole in the lower pressing plate 7 and forms a threaded movable connection with the threaded hole on the generator casing 6, so that the third sealing member 11 and the generator casing 6 can be fixed.
  • the third sealing member 11 may adopt an O-shaped or L-shaped sealing strip.
  • a seal mounting slit is formed in the vertical direction of the lower pressing plate 7, a second sealing member 10 is disposed in the sealing member mounting slit; a slit is formed at the free end of the lower pressing plate 7, and the first sealing member 9 is installed in the slit.
  • the first sealing member 9 and the second sealing member 10 are respectively formed by a pressing bolt 14 to cooperate with the pressing strip 13 and the sealing pressing plate 8 to form a sliding sealing structure with the lower receiving tube sheet 2.
  • a threaded hole may be formed in the lower pressing plate 7, and a through hole is formed in the bead 13, and the pressing bolt 14 penetrates the through hole in the bead 13 and forms a threaded movable connection with the threaded hole in the lower pressing plate 7, thereby
  • the bead 13 can be pressed against the sealing platen 8, and the sealing platen 8 presses the first sealing member 9 such that the first sealing member 9 and the second sealing member 10 respectively form a sliding sealing structure with the lower receiving tube plate 2, That is, when the hydrogen cooler generates a telescopic displacement in the vertical direction due to thermal expansion and contraction, as shown in FIG. 1, the lower tube sheet 2 and the first seal member 9 and the second seal member 10 are generated.
  • the first sealing member 9 is preferably a rubber strip having a square cross-sectional shape
  • the second sealing member 10 is preferably an O-shaped sealing strip.
  • the cross-sectional shape of the bead 13 has an L-shaped structure, and a hollow hollow body structure is formed between the sealing pressing plate 8, the lower pressing plate 7, and the bead 13, as shown in FIG. 2, with such a structural design, the bead 13 can be made. It has a certain compressive elasticity to ensure that the bead 13 can press the sealing platen 8.
  • the first sealing member 9 can be installed in a cavity formed by the sealing platen 8, the lower tube tube 2, and the lower pressing plate 7, the hardness of the sealing platen 8 being greater than the hardness of the first sealing member 9,
  • the compression deformation of the first sealing member 9 can be completely defined in the cavity formed by the sealing platen 8, the lower tube tube 2, and the lower platen 7, and the first sealing member 9 can be made. It has a larger deformation amount than the sealing platen 8 under the same pressure, thereby ensuring the sealing reliability between the first sealing member 9 and the lower receiving tube plate 2, when the first sealing member 9 is a square rubber strip having a sectional shape. Especially suitable.
  • the compression deformation variables of the first sealing member 9, the second sealing member 10, and the third sealing member 11 are preferably controlled in respective compression directions. 15%-25% of the natural size to prevent the first seal 9, the second seal 10, and the third seal 11 from degrading the overall sealing performance of the turbo generator due to excessive compression deformation.
  • a through hole may be formed in the lower platen 7, and the fastening bolt 12 penetrates the through hole on the lower platen 7. And forming a clearance fit with the through hole.
  • the hydrogen cooler is solid in the horizontal direction
  • the sealing structure can prevent the hydrogen from escaping from the inside to the outside of the machine in the horizontal direction, and at the same time, because it forms a sliding sealing structure in the vertical direction, the hydrogen can be prevented from escaping from the inside to the outside in the vertical direction.
  • the hydrogen cooler expands and contracts due to temperature change, it can play a certain compensation function, so as to release the displacement stress generated when the hydrogen cooler is thermally expanded and contracted.
  • the invention can effectively improve the sealing reliability of the sealing surface of the hydrogen cooler and the generator casing in the horizontal direction and the vertical direction, so as to effectively prevent hydrogen from leaking from the inside of the machine to the outside of the machine, thereby causing the turbine generator to operate.
  • the safety and reliability of the time is effectively improved.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

一种应用于汽轮发电机的氢气密封结构，包括压条(13)、压紧螺栓(14)、下压板(7)、密封压板(8)以及氢冷器本体(4)和发电机机壳(6)，在氢冷器本体(4)相对两端分别固定连接上承管板(5)、下承管板(2)，上承管板(5)与发电机机壳(6)之间形成密封连接，下压板(7)与发电机机壳(6)之间形成固定密封结构，在下压板(7)自由端开设切口，在切口中安装第一密封件(9)，压紧螺栓(14)贯穿压条(13)后与下压板(7)连接固定，并使压条(13)压紧密封压板(8)，密封压板(8)压紧第一密封件(9)，且第一密封件(9)与下承管板(2)之间形成滑动密封结构。该密封结构可以提高氢冷器与发电机机壳密封面在水平方向、垂直方向上的密封可靠性，以使得汽轮发电机运行时的安全可靠性得以有效提高。

Description

一种应用于汽轮发电机的氢气密封结构 技术领域
本发明涉及汽轮发电机氢气密封技术领域，尤其是涉及一种应用于汽轮发电机的氢气密封结构。
背景技术
汽轮发电机的主要热交换部件是氢气冷却器(简称“氢冷器”，下同)，其中的冷却介质是氢气。由于氢气是最轻的气体，其渗透性和扩散性均很强，在装满氢气的压力容器中很容易造成氢气泄漏。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，因此，运行中的发电机对于氢气的泄漏量有着严格的要求。
但是，目前的氢冷器结构设计，在密封结构方面主要存在如下缺陷：第一，在实际安装过程中，容易损伤垂直方向上的密封条，现场安装工艺不佳，操作性也较差，导致实际密封效果并不好。第二，在实际使用过程中，当发电机容量加大、氢压提高时，其密封效果则完全达不到使用要求；而且，随着氢压的不断提高，氢气的密封问题将更为突出。
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，提供一种应用于汽轮发电机的氢气密封结构，提高汽轮发电机运行时的安全可靠性。
本发明要解决的技术问题采用以下技术方案来实现：一种应用于汽轮发电机的氢气密封结构，包括压条、压紧螺栓、下压板、密封压板以及氢冷器本体和发电机机壳，在氢冷器本体相对两端分别固定连接上承管板、下承管板，所述上承管板与发电机机壳之间形成密封连接，所述下压板与发电机机壳之间形成固定密封结构，在下压板自由端开设切口，在切口中安装第一密封件，所述压紧螺栓贯穿压条后与下压板连接固定，并使压条压紧密封压板，所述密封压板压紧第一密封件，且第一密封件与下承管板之间形成滑动密封结构。
优选地，所述下压板的垂直方向上开设密封件安装切口，所述密封件安装切口中设置第二密封件，所述第二密封件与下承管板之间形成滑动密封结构。
优选地，所述下压板的水平方向上开设密封件安装切口，所述密封件安装切口中 设置第三密封件，所述第三密封件与发电机机壳之间形成固定密封结构。
优选地，所述下压板上开设通孔，所述发电机机壳上开设螺纹孔，所述紧固螺栓贯穿下压板上的所述通孔后与发电机机壳上的所述螺纹孔之间形成螺纹活动连接，且所述紧固螺栓与下压板上的所述通孔之间形成间隙配合。
优选地，所述压条截面形状呈L形结构，且密封压板、下压板、压条之间形成空腔结构。
优选地，所述密封压板的硬度大于第一密封件的硬度。
与现有技术相比，本发明的有益效果是：通过上承管板与发电机机壳之间形成密封连接，下压板与发电机机壳之间形成固定密封结构，且第一密封件与下承管板之间形成滑动密封结构，从而可以提高氢冷器与发电机机壳密封面在水平方向、垂直方向上的密封可靠性，有效地阻止氢气从机内侧泄漏至机外侧，进而可以有效地提高汽轮发电机运行时的安全可靠性。
附图说明
图1为本发明一种应用于汽轮发电机的氢气密封结构的构造示意图。
图2为图1中A处的局部放大图。
图中标记：1-水箱，2-下承管板，3-冷却水管，4-氢冷器本体，5-上承管板，6-发电机机壳，7-下压板，8-密封压板，9-第一密封件，10-第二密封件，11-第三密封件，12-紧固螺栓，13-压条，14-压紧螺栓。
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、图2所示的应用于汽轮发电机的氢气密封结构，具体包括压条13、压紧螺栓14、下压板7、密封压板8以及氢冷器本体4和发电机机壳6，在氢冷器本体4的相对两端分别固定连接上承管板5、下承管板2，所述的上承管板5与发电机机壳6之间形成固定的密封连接，所述的下承管板2底部固定连接水箱1，在上承管板5与下承管板2之间固定连接冷却水管3，所述冷却水管3与水箱1相通。
如图2所示，在下压板7水平方向上开设密封件安装切口，所述密封件安装切口中设置第三密封件11，所述第三密封件11通过紧固螺栓12与发电机机壳6之间形成固定密封结构。具体地，可以在下压板7上开设通孔，在发电机机壳6上开设螺纹孔， 所述紧固螺栓12贯穿下压板7上的通孔且与发电机机壳6上的螺纹孔之间形成螺纹活动连接，从而可以使第三密封件11与发电机机壳6之间形成固定密封结构。优选地，所述的第三密封件11可以采用O形或者L形密封条。
如图2所示，在下压板7的垂直方向上开设密封件安装切口，所述密封件安装切口中设置第二密封件10；在下压板7自由端开设切口，在切口中安装第一密封件9；所述的第一密封件9、第二密封件10均通过压紧螺栓14与压条13、密封压板8相配合而与下承管板2之间形成滑动密封结构。具体地，可以在下压板7上开设螺纹孔，在压条13上开设通孔，所述压紧螺栓14贯穿压条13上的通孔且与下压板7上的螺纹孔之间形成螺纹活动连接，从而可以使压条13压紧密封压板8，所述密封压板8压紧第一密封件9，使得第一密封件9、第二密封件10分别与下承管板2之间形成滑动密封结构，也即，当氢冷器因热胀冷缩而在垂直方向上产生伸缩位移时，如图1所示，所述下承管板2与第一密封件9、第二密封件10之间将产生相对滑动，并且下承管板2分别与第一密封件9、第二密封件10之间保持密封状态。其中的第一密封件9优选采用截面形状为方形的橡胶条，所述第二密封件10优选采用O形密封条。优选地，所述压条13的截面形状呈L形结构，且密封压板8、下压板7、压条13之间形成中空腔体结构，如图2所示，采用这样的结构设计，可以使压条13具有一定的压缩弹性，以确保压条13能够压紧密封压板8。
优选地，可以使第一密封件9安装在由密封压板8、下承管板2、下压板7所共同形成的空腔内，所述密封压板8的硬度大于第一密封件9的硬度，采用这样的结构设计后，可以使第一密封件9的压缩形变完全被限定在由密封压板8、下承管板2、下压板7所共同形成的空腔内，并使第一密封件9在同等压力下比密封压板8具有更大的形变量，从而确保第一密封件9与下承管板2之间的密封可靠性，在第一密封件9采用截面形状为方形橡胶条时，尤为适用。
在上述的应用于汽轮发电机的氢气密封结构安装到位后，其中的第一密封件9、第二密封件10、第三密封件11的压缩形变量最好是分别控制在各自压缩方向上自然尺寸的15％-25％，以防止第一密封件9、第二密封件10、第三密封件11因压缩形变过度而降低汽轮发电机的整体密封性能。为了方便调整下压板7分别与下承管板2、发电机机壳6之间的相对间隙，可以在下压板7上开设通孔，所述紧固螺栓12贯穿下压板7上的所述通孔，且与所述通孔之间形成间隙配合。
本发明的应用于汽轮发电机的氢气密封结构中，由于氢冷器在水平方向上形成固 定密封结构，从而可以阻止氢气在水平方向上从机内向机外逸出，同时，由于其在垂直方向上形成滑动密封结构，从而既能阻止氢气在垂直方向上从机内向机外逸出，并且在氢冷器因温度变化而胀缩时，能起到一定的补偿作用，以便对氢冷器热胀冷缩时产生的位移应力进行及时释放。因此，本发明可以有效地提高氢冷器与发电机机壳密封面在水平方向、垂直方向上的密封可靠性，以有效地阻止氢气从机内侧泄漏至机外侧，从而使得汽轮发电机运行时的安全可靠性得以有效地提高。
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 (6)

  1. 一种应用于汽轮发电机的氢气密封结构，其特征在于：包括压条(13)、压紧螺栓(14)、下压板(7)、密封压板(8)以及氢冷器本体(4)和发电机机壳(6)，在氢冷器本体(4)相对两端分别固定连接上承管板(5)、下承管板(2)，所述上承管板(5)与发电机机壳(6)之间形成密封连接，所述下压板(7)与发电机机壳(6)之间形成固定密封结构，在下压板(7)自由端开设切口，在切口中安装第一密封件(9)，所述压紧螺栓(14)贯穿压条(13)后与下压板(7)连接固定，并使压条(13)压紧密封压板(8)，所述密封压板(8)压紧第一密封件(9)，且第一密封件(9)与下承管板(2)之间形成滑动密封结构。
  2. 根据权利要求1所述的应用于汽轮发电机的氢气密封结构，其特征在于：所述下压板(7)的垂直方向上开设密封件安装切口，所述密封件安装切口中设置第二密封件(10)，所述第二密封件(10)与下承管板(2)之间形成滑动密封结构。
  3. 根据权利要求1所述的应用于汽轮发电机的氢气密封结构，其特征在于：所述下压板(7)的水平方向上开设密封件安装切口，所述密封件安装切口中设置第三密封件(11)，所述第三密封件(11)与发电机机壳(6)之间形成固定密封结构。
  4. 根据权利要求1-3任一项所述的应用于汽轮发电机的氢气密封结构，其特征在于：所述下压板(7)上开设通孔，所述发电机机壳(6)上开设螺纹孔，所述紧固螺栓(12)贯穿下压板(7)上的所述通孔后与发电机机壳(6)上的所述螺纹孔之间形成螺纹活动连接，且所述紧固螺栓(12)与下压板(7)上的所述通孔之间形成间隙配合。
  5. 根据权利要求1-3任一项所述的应用于汽轮发电机的氢气密封结构，其特征在于：所述压条(13)截面形状呈L形结构，且密封压板(8)、下压板(7)、压条(13)之间形成空腔结构。
  6. 根据权利要求5所述的应用于汽轮发电机的氢气密封结构，其特征在于：所述密封压板(8)的硬度大于第一密封件(9)的硬度。
PCT/CN2017/114365 2016-12-14 2017-12-04 一种应用于汽轮发电机的氢气密封结构 WO2018107986A1 (zh)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106767114A (zh) * 2016-12-14 2017-05-31 东方电气集团东方电机有限公司 一种应用于汽轮发电机的氢气密封结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6685190B1 (en) * 2000-10-17 2004-02-03 General Electric Company Ventilated trickle seal
CN101710760A (zh) * 2009-12-02 2010-05-19 中国广东核电集团有限公司 发电机氢气冷却器密封结构
US20100189545A1 (en) * 2009-01-27 2010-07-29 General Electric Company Automated Seal Oil By-Pass System For Hydrogen Cooled Generators
CN203301288U (zh) * 2013-06-24 2013-11-20 大唐贵州野马寨发电有限公司 一种氢冷发电机的密封装置
CN106767114A (zh) * 2016-12-14 2017-05-31 东方电气集团东方电机有限公司 一种应用于汽轮发电机的氢气密封结构

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201680741U (zh) * 2010-05-19 2010-12-22 丰满发电厂 发电机空气冷却器
CN202484456U (zh) * 2011-12-21 2012-10-10 东方电气集团东方汽轮机有限公司 具有相对位移的活动接口的密封结构
JP2014095421A (ja) * 2012-11-09 2014-05-22 Hitachi Ltd 発電機
CN202938970U (zh) * 2012-11-16 2013-05-15 东方电气(广州)重型机器有限公司 框架开放式热交换器管子与管板封口焊氦检漏装置
CN204177272U (zh) * 2014-10-31 2015-02-25 哈尔滨汽轮机厂辅机工程有限公司 一种汽轮机组管壳式润滑油冷却器的密封结构
CN204290623U (zh) * 2014-12-30 2015-04-22 华润电力（菏泽）有限公司 发电机氢冷器装置
CN105203269A (zh) * 2015-09-16 2015-12-30 东方电气(广州)重型机器有限公司 一种换热管、管板封口焊氦检漏装置
CN205534195U (zh) * 2016-04-01 2016-08-31 东方电气集团东方锅炉股份有限公司 高压容器的弹性全程自消除间隙式密封结构
CN106053609B (zh) * 2016-06-08 2018-12-28 沂源县华阳能源设备有限公司 一种基于无线无源技术的汽轮机发电机组漏氢在线监测装置
CN105910474B (zh) * 2016-06-29 2018-03-30 李志典 多管板换热器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6685190B1 (en) * 2000-10-17 2004-02-03 General Electric Company Ventilated trickle seal
US20100189545A1 (en) * 2009-01-27 2010-07-29 General Electric Company Automated Seal Oil By-Pass System For Hydrogen Cooled Generators
CN101710760A (zh) * 2009-12-02 2010-05-19 中国广东核电集团有限公司 发电机氢气冷却器密封结构
CN203301288U (zh) * 2013-06-24 2013-11-20 大唐贵州野马寨发电有限公司 一种氢冷发电机的密封装置
CN106767114A (zh) * 2016-12-14 2017-05-31 东方电气集团东方电机有限公司 一种应用于汽轮发电机的氢气密封结构

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