CN202034061U - Flange joint for auxiliary system pipeline of main pump - Google Patents

Flange joint for auxiliary system pipeline of main pump Download PDF

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Publication number
CN202034061U
CN202034061U CN2011200685354U CN201120068535U CN202034061U CN 202034061 U CN202034061 U CN 202034061U CN 2011200685354 U CN2011200685354 U CN 2011200685354U CN 201120068535 U CN201120068535 U CN 201120068535U CN 202034061 U CN202034061 U CN 202034061U
Authority
CN
China
Prior art keywords
flange
pipeline
main pump
joint
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011200685354U
Other languages
Chinese (zh)
Inventor
支凤春
唐明
贾晓鸿
张福海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Nuclear Power Corp
Original Assignee
Jiangsu Nuclear Power Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Nuclear Power Corp filed Critical Jiangsu Nuclear Power Corp
Priority to CN2011200685354U priority Critical patent/CN202034061U/en
Application granted granted Critical
Publication of CN202034061U publication Critical patent/CN202034061U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The utility model belongs to a pipeline joint, particularly relating to a flange joint for an auxiliary system pipeline of a main pump. The pipe joint for the auxiliary system pipeline of the main pump comprises a flange and a threaded flange; the flange and the threaded flange are connected with each other by nuts arranged around the flange; a lockwasher is arranged between the nut and the flange; the threaded flange is internally sheathed with a pipe joint; two stepwise annular troughs are arranged at the middle joint of the flange and the pipe joint; and each annular trough is internally provided with a sealing graphite washer. The flange joint has the advantages that the sealing form of the connecting flange on the inlet pipeline and the outlet pipeline of an independent circuit is optimized; and the original single-sealing structure is changed into a dual-sealing structure; therefore, the sealing effect of the flange is greatly improved.

Description

Main pump subsystem pipeline flange-interface
Technical field
The utility model belongs to a kind of pipe interface, is specifically related to a kind of used in nuclear power station main pump subsystem pipeline flange-interface.
Background technology
The 1391 type main pumps that gulf, field nuclear power plant reactor cooling medium pump (hereinafter to be referred as main pump) manufactures and designs office's design and makes for Russian central robot, 4 of every units, totally eight, its subsystem comprises: independent loop, gland seal assembly cooling water system, radially-thrust bearing is lubricated/and cooling system and dynamo oil system.When being overhauled, main pump all needs a loop water level is reduced to below 22 meters at every turn, just can carry out the installation centering work of the dismountable parts of main pump respectively behind dismounting axle water shutoff water supply line and the independent loop import and export pipeline, the overhaul efficiency that will have a strong impact on main pump so also directly has influence on the critical path of overhaul.
The joint flange sealing surface that existing independent loop is imported and exported on the pipeline is single hermetically-sealed construction, can't satisfy seal request the pipeline translation after, therefore needs its hermetically-sealed construction of improvement to satisfy the service requirement after the pipeline translation.
Summary of the invention
The purpose of this utility model provides a kind of main pump subsystem pipeline flange-interface that can satisfy independent loop import and export pipeline joint flange seal request.
The utility model is achieved in that main pump subsystem pipeline interface comprises flange and threaded flange, flange is connected by the nut that is located at the flange circumference with threaded flange, between nut and flange, lock washer is installed, the internal sleeve of threaded flange is connected to pipe adapter, the middle junction of flange and pipe adapter has stair-stepping twice annular groove, is equipped with the sealing Graphite pad in the per pass annular groove.
The utility model has the advantages that, independent loop is imported and exported the seal form of joint flange on the pipeline and optimized, change original single hermetically-sealed construction into double sealing structure, improved the sealing effectiveness of flange greatly.
Description of drawings
Fig. 1 is that existing independent loop is imported and exported joint flange figure on the pipeline;
Fig. 2 is that independent loop provided by the utility model is imported and exported joint flange figure on the pipeline.
Among the figure, 1 bolt, 2 lock washers, 3 flanges, 4 graphite-seal rings, 5 threaded flanges, 6 pipe adapters, 7 sealing Graphite pads.
Embodiment
Below in conjunction with drawings and Examples the utility model is made following detailed description:
As shown in Figure 2, main pump subsystem pipeline interface comprises flange 3 and threaded flange 5, the two connects by a plurality of bolts 1 that are arranged on the flange circumference, between bolt 1 and flange 3, lock washer 2 is installed, the internal sleeve of threaded flange 5 is connected to pipe adapter 6, flange 3 and the pipe adapter 6 middle through-hole structures that are, flange 3 has stair-stepping twice annular groove with the middle junction of pipe adapter 6, and sealing Graphite pad 7 all is installed in the per pass annular groove.
Improve the inherent shortcoming that exists a place to contact firmly between the flange 3 and pipe adapter 6 in the prior art scheme greatly by double sealing structure, thereby solved the poorly sealed problem of pipeline translation rear flange.

Claims (1)

1. main pump subsystem pipeline interface comprises flange (3) and threaded flange (5), flange (3) is connected by the bolt (1) that is located at the flange circumference with threaded flange (5), between bolt (1) and flange (3), lock washer (2) is installed, the internal sleeve of threaded flange (5) is connected to pipe adapter (6), it is characterized in that: flange (3) has stair-stepping twice annular groove with the middle junction of pipe adapter (6), is equipped with sealing Graphite pad (7) in the per pass annular groove.
CN2011200685354U 2011-03-15 2011-03-15 Flange joint for auxiliary system pipeline of main pump Expired - Lifetime CN202034061U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200685354U CN202034061U (en) 2011-03-15 2011-03-15 Flange joint for auxiliary system pipeline of main pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200685354U CN202034061U (en) 2011-03-15 2011-03-15 Flange joint for auxiliary system pipeline of main pump

Publications (1)

Publication Number Publication Date
CN202034061U true CN202034061U (en) 2011-11-09

Family

ID=44896350

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200685354U Expired - Lifetime CN202034061U (en) 2011-03-15 2011-03-15 Flange joint for auxiliary system pipeline of main pump

Country Status (1)

Country Link
CN (1) CN202034061U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131878A (en) * 2014-06-18 2014-11-05 广西金创汽车零部件制造有限公司 Diesel engine water outlet pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131878A (en) * 2014-06-18 2014-11-05 广西金创汽车零部件制造有限公司 Diesel engine water outlet pipe

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20111109

CX01 Expiry of patent term