CN205445876U - 一种水轮机主轴密封装置 - Google Patents

一种水轮机主轴密封装置 Download PDF

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Publication number
CN205445876U
CN205445876U CN201521102163.7U CN201521102163U CN205445876U CN 205445876 U CN205445876 U CN 205445876U CN 201521102163 U CN201521102163 U CN 201521102163U CN 205445876 U CN205445876 U CN 205445876U
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China
Prior art keywords
seal
main shaft
thread
sealing shroud
hydraulic turbine
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Expired - Fee Related
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CN201521102163.7U
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English (en)
Inventor
刘杰
桂勇
王育才
刘晓航
李岚
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Chongqing Water Turbine Works Co Ltd
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Chongqing Water Turbine Works Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

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  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

本实用新型公开了一种水轮机主轴密封装置,包括主轴(1),在所述主轴(1)上设置有密封套(2),在所述密封套(2)外壁上设置有密封体(3),在所述密封套(2)与密封体(3)的接触面间设置有螺纹密封机构。本实用新型具有结构简单、成本低廉、使用可靠的优点,采用它能够对水流形成阻力,阻止了水流的进入及快速通过,起到密封水流的作用,提高了电站运行的经济性。

Description

一种水轮机主轴密封装置
技术领域
本实用新型涉及一种水轮机,特别是一种水轮机主轴密封装置。
背景技术
目前,在水轮机主轴上,其常规无接触式密封多采用间隙及容积变化改变压力来进行密封。在密封体上设置多条尺寸不同的减压密封槽,增大了进入密封槽中水流的流动行程,同时改变进入密封水流的容积,使之流速及压力同时降低,增大排挤阻力,使进入密封的水流减少以起到密封的作用。在靠近密封末端的密封槽上开设了两根软管,将流速及压力降低后的水流引至集水井,减少机坑内的漏水。虽然这种结构可行,但是,此密封对水流方向并无作用力,对水流的密封效果则相对减弱,仍有大量的密封漏水进入集水井,造成集水井排水泵频繁启动,影响电站设备的使用寿命及运行的经济性。
实用新型内容
本实用新型的目的就是提供一种能够有效防止漏水现象发生的水轮机主轴密封。
本实用新型的目的是通过这样的技术方案实现的,一种水轮机主轴密封装置,包括主轴,在所述主轴上设置有密封套,在所述密封套外设置有密封体,在所述密封套与密封体的接触端面间设置有螺纹密封机构。
其中,在所述密封套的外端面设置有反螺纹,在所述密封体上且与密封套相对应的面设置有正螺纹;或者,在所述密封套的外端面设置有正螺纹,在所述密封体上且与密封套对应的壁上设置有反螺纹。
进一步描述,所述正螺纹和反螺纹均为梯形螺纹。
由于采用了上述技术方案,本实用新型具有结构简单、成本低廉、使用可靠的优点,采用它能够对水流形成阻力,阻止了水流的进入及快速通过,起到密封水流的作用,提高了电站运行的经济性。
附图说明
本实用新型的附图说明如下:
图1为本实用新型的结构示意图。
具体实施方式
下面结合附图对本实用新型的具体实施方式作进一步详细的说明,但本实用新型并不局限于这些实施方式,任何在本实施例基本精神上的改进或替代,仍属于本实用新型权利要求所要求保护的范围。
实施例1:如图1所示,一种水轮机主轴密封装置,包括主轴1,在所述主轴1上设置有密封套2,在所述密封套2外设置有密封体3,在所述密封套2与密封体3的接触端面间设置有螺纹密封机构。
在所述密封套2的外端面设置有反螺纹,在所述密封体3上且与密封套2对应的壁上设置有正螺纹。
实施例2:在所述密封套2的外端面设置有正螺纹,在所述密封体3上且与密封套2对应的壁上设置有反螺纹。
为了密封的效果更好,所述正螺纹和反螺纹均为梯形螺纹。
由于受到正、反螺纹的作用,水流通过此密封处时,受到阻力,水流进入的速度大大减小,起到了密封水流的作用。

Claims (2)

1.一种水轮机主轴密封装置,包括主轴(1),在所述主轴(1)上设置有密封套(2),在所述密封套(2)外设置有密封体(3),其特征是:在所述密封套(2)与密封体(3)的接触端面间设置有螺纹密封机构;在所述密封套(2)的外端面设置有反螺纹,在所述密封体(3)上且与密封套(2)对应的壁上设置有正螺纹;或,在所述密封套(2)的外端面设置有正螺纹,在所述密封体(3)上且与密封套(2)对应的壁上设置有反螺纹。
2.如权利要求1所述的水轮机主轴密封装置,其特征是:所述正螺纹和反螺纹均为梯形螺纹。
CN201521102163.7U 2015-12-28 2015-12-28 一种水轮机主轴密封装置 Expired - Fee Related CN205445876U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521102163.7U CN205445876U (zh) 2015-12-28 2015-12-28 一种水轮机主轴密封装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521102163.7U CN205445876U (zh) 2015-12-28 2015-12-28 一种水轮机主轴密封装置

Publications (1)

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CN205445876U true CN205445876U (zh) 2016-08-10

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CN (1) CN205445876U (zh)

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Main shaft sealing device for water turbine

Effective date of registration: 20180117

Granted publication date: 20160810

Pledgee: Chongqing mechanical and electrical Holding Group Finance Co.,Ltd.

Pledgor: CHONGQING WATER TURBINE WORKS Co.,Ltd.

Registration number: 2018980000007

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20190118

Granted publication date: 20160810

Pledgee: Chongqing mechanical and electrical Holding Group Finance Co.,Ltd.

Pledgor: CHONGQING WATER TURBINE WORKS Co.,Ltd.

Registration number: 2018980000007

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Main shaft sealing device for water turbine

Effective date of registration: 20190320

Granted publication date: 20160810

Pledgee: Chongqing mechanical and electrical Holding Group Finance Co.,Ltd.

Pledgor: CHONGQING WATER TURBINE WORKS Co.,Ltd.

Registration number: 2019500000007

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160810

Termination date: 20211228