CN104832743A - Blind flange - Google Patents

Blind flange Download PDF

Info

Publication number
CN104832743A
CN104832743A CN201510282196.2A CN201510282196A CN104832743A CN 104832743 A CN104832743 A CN 104832743A CN 201510282196 A CN201510282196 A CN 201510282196A CN 104832743 A CN104832743 A CN 104832743A
Authority
CN
China
Prior art keywords
flange
blind plate
blind
blank
boss
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.)
Pending
Application number
CN201510282196.2A
Other languages
Chinese (zh)
Inventor
孟德宇
唐西明
张学粮
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.)
China General Nuclear Power Corp
CGN Power Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
Original Assignee
China General Nuclear Power Corp
CGN Power Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
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 China General Nuclear Power Corp, CGN Power Co Ltd, Suzhou Nuclear Power Research Institute Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201510282196.2A priority Critical patent/CN104832743A/en
Publication of CN104832743A publication Critical patent/CN104832743A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10Means for stopping flow from or in pipes or hoses

Abstract

The invention relates to a blind flange. The blind flange comprises a flange part and a blind plate part, the flange part is in a disc shape, an external thread is arranged on the side wall of the flange part, the blind plate part is in a disc shape, a sunk region for containing the flange part is formed in the blind plate part, an internal thread matched with the external thread is arranged on the side wall in the sunk region, and the blind plate part is arranged on the flange part in a sleeving mode and in threaded connection with the flange part through the internal thread and the external thread. According to the improved blind flange, the seal performance between the flange part and the blind plate part is improved. Before a system hydrostatic test of a nuclear power station in service, compared with the prior art, the installing time of on-site workers for the installation work of the flange part and the blind plate part is greatly saved, it is estimated that after the improvement, the work can be finished by just three to four persons cooperating for fifteen minutes, and the irradiation time of the workers is shortened.

Description

A kind of blank flange
Technical field
the present invention relates to a kind of blank flange, particularly relate to the blank flange of a kind of nuclear power station hydraulic test of pipeline of in-service period.
Background technique
as shown in Figure 1, three generations's nuclear power station in-service period needs to do the hydrostatic test to section of tubing.Need isolate pipeline, and flange need use blind plate to carry out shutoff to flange as a kind of isolation boundary.Existing method many employings blind plate is connected with the bolt of flange, and ensureing gapless between the consistent guarantee flange of all bolt clipping forcees and blind plate, existing situation installs a blind plate needs 4-5 skilled worker's cooperating time of more than one hour could installation.Because nuclear power station part system radiation dose of in-service period is larger, the prolongation in man-hour is unfavorable for nuclear power station optimization of radiation protection principle.And when flange band boss, the plane blind plate sealing that existing situation adopts also is difficult to ensure.
Summary of the invention
technical problem to be solved by this invention overcomes the deficiencies in the prior art, provides a kind of blank flange.
for solving above technical problem, the present invention takes following technological scheme:
a kind of blank flange, it comprises flange part and blind plate portion, described flange part is disc, the sidewall of described flange part is provided with outside thread, described blind plate portion is disc, described blind plate portion is provided with the depressed area of an accommodation flange part, the sidewall in described depressed area is provided with the internal thread matched with described outside thread, and described blind plate portion to be set in described flange part and to be threaded mutually with outside thread by internal thread.
preferably, described flange part is provided with a scrobicular ring near an end in blind plate portion, is provided with a pad for sealing in described scrobicular ring.
preferably, described flange part is a boss flange, and it comprises a boss part, and described boss part is arranged in depressed area.
due to the employing of above technological scheme, the present invention compared with prior art tool has the following advantages:
be threaded connection between flange part of the present invention and blind plate portion, change dull and stereotyped blind plate of the prior art into spill blind plate, described depressed area is the accommodation district of flange part.Blank flange after improvement makes the sealing between flange part and blind plate portion improve.Before the nuclear power station system hydrostatic test of in-service period, installment work between flange part with blind plate has greatly saved the field worker installation time compared with prior art, after estimating improvement, this work only needs 3 ~ 4 people coordinate to complete for 15 minutes, decreases the time that workman is irradiated.
Accompanying drawing explanation
fig. 1 is the structural representation of blank flange of the prior art;
fig. 2 is the structural representation of a kind of embodiment of blank flange of the present invention;
fig. 3 is the another kind of structural representation without the blank flange embodiment of boss of the present invention;
fig. 4 is the structural representation in blind plate portion of the present invention;
fig. 5 is the structural representation of flange part of the present invention,
1, flange part; 2, blind plate portion; 3, outside thread; 4, internal thread; 5, depressed area.
Embodiment
below in conjunction with specific embodiment, the present invention is described in further details.Should be understood that these embodiments are for illustration of basic principle of the present invention, major character and advantage, and the present invention does not limit by the scope of following examples.The implementation condition adopted in embodiment can do further adjustment according to specific requirement, and not marked implementation condition is generally the condition in normal experiment.
as Fig. 2, 4, shown in 5, for the structural representation of a kind of blank flange of the present invention, described blank flange comprises flange part 1 and blind plate portion 2, described flange part 1 is disc, the sidewall of described flange part 1 is provided with outside thread 3, described blind plate portion 2 is disc, described blind plate portion 2 is provided with the depressed area 5 of an accommodation flange part 1, described flange part 1 is a boss flange, comprise a boss part, described boss part is also arranged in depressed area 5, sidewall in described depressed area 5 is provided with the internal thread 4 matched with described outside thread 3, described blind plate portion 2 to be set in described flange part 1 and to be threaded mutually with outside thread 3 by internal thread 4.Described flange part 1 is provided with a scrobicular ring near an end in blind plate portion 2, being provided with a pad for sealing, because those skilled in the art know this technology already, thus, not showing in the accompanying drawings in described scrobicular ring.
be illustrated in figure 3 the blank flange structural representation not having boss of another kind of embodiment of the present invention.
be threaded connection between flange part 1 of the present invention and blind plate portion 2, change dull and stereotyped blind plate of the prior art into spill blind plate, described depressed area 5 is the accommodation district of flange part 1.Blank flange after improvement makes the sealing between flange part 1 and blind plate portion 2 improve.Before the nuclear power station system hydrostatic test of in-service period, flange part 1 has greatly saved the field worker installation time with the installment work between blind plate compared with prior art, after estimating improvement, this work only needs 3 ~ 4 people coordinate to complete for 15 minutes, decreases the time that workman is irradiated.
above to invention has been detailed description; the explanation of embodiment just understands method of the present invention and core concept thereof for helping; its object is to allow the personage being familiar with this art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims (3)

1. a kind of blank flange, it comprises flange part and blind plate portion, it is characterized in that: described flange part is disc, the sidewall of described flange part is provided with outside thread, described blind plate portion is disc, described blind plate portion is provided with the depressed area of an accommodation flange part, the sidewall in described depressed area is provided with the internal thread matched with described outside thread, and described blind plate portion to be set in described flange part and to be threaded mutually with outside thread by internal thread.
2. a kind of blank flange according to claim 1, is characterized in that: described flange part is provided with a scrobicular ring near an end in blind plate portion, is provided with a pad for sealing in described scrobicular ring.
3. a kind of blank flange according to claim 2, is characterized in that: described flange part is a boss flange, and it comprises a boss part, and described boss part is arranged in depressed area.
CN201510282196.2A 2015-05-28 2015-05-28 Blind flange Pending CN104832743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510282196.2A CN104832743A (en) 2015-05-28 2015-05-28 Blind flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510282196.2A CN104832743A (en) 2015-05-28 2015-05-28 Blind flange

Publications (1)

Publication Number Publication Date
CN104832743A true CN104832743A (en) 2015-08-12

Family

ID=53810824

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510282196.2A Pending CN104832743A (en) 2015-05-28 2015-05-28 Blind flange

Country Status (1)

Country Link
CN (1) CN104832743A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2428971Y (en) * 2000-05-15 2001-05-09 李道普 Closers for side tubes and capillary tubes of infiltrating irragation
US20070029798A1 (en) * 2005-06-17 2007-02-08 Adorni Craig S An end fitting for piping systems
US20090242057A1 (en) * 2008-04-01 2009-10-01 International Truck Intellectual Property Company, Llc Torque limiting cap for air conditioning service ports
CN203743714U (en) * 2014-01-22 2014-07-30 重庆工业设备安装集团有限公司 Pipe end sealing and pressure testing tool of plastic water feeding pipeline
CN204114456U (en) * 2014-09-19 2015-01-21 常州市武进第二法兰锻造有限公司 Stainless steel pipeline blind flange plugging structure
CN204628947U (en) * 2015-05-28 2015-09-09 苏州热工研究院有限公司 A kind of blank flange

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2428971Y (en) * 2000-05-15 2001-05-09 李道普 Closers for side tubes and capillary tubes of infiltrating irragation
US20070029798A1 (en) * 2005-06-17 2007-02-08 Adorni Craig S An end fitting for piping systems
US20090242057A1 (en) * 2008-04-01 2009-10-01 International Truck Intellectual Property Company, Llc Torque limiting cap for air conditioning service ports
CN203743714U (en) * 2014-01-22 2014-07-30 重庆工业设备安装集团有限公司 Pipe end sealing and pressure testing tool of plastic water feeding pipeline
CN204114456U (en) * 2014-09-19 2015-01-21 常州市武进第二法兰锻造有限公司 Stainless steel pipeline blind flange plugging structure
CN204628947U (en) * 2015-05-28 2015-09-09 苏州热工研究院有限公司 A kind of blank flange

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20150812