CN104075051A - Flange having warning function - Google Patents

Flange having warning function Download PDF

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Publication number
CN104075051A
CN104075051A CN201410286287.9A CN201410286287A CN104075051A CN 104075051 A CN104075051 A CN 104075051A CN 201410286287 A CN201410286287 A CN 201410286287A CN 104075051 A CN104075051 A CN 104075051A
Authority
CN
China
Prior art keywords
flange
piston
stepped shape
type circle
axial
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
CN201410286287.9A
Other languages
Chinese (zh)
Inventor
盛林海
庄明
汪礼锋
赵瑞瑞
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.)
Institute of Plasma Physics of CAS
Original Assignee
Institute of Plasma Physics of CAS
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 Institute of Plasma Physics of CAS filed Critical Institute of Plasma Physics of CAS
Priority to CN201410286287.9A priority Critical patent/CN104075051A/en
Publication of CN104075051A publication Critical patent/CN104075051A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/003—Auxiliary devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks

Abstract

The invention discloses a flange having a warning function. The flange comprises upper and lower step-shaped flanges which are matched, wherein the top face of the lower step-shaped flange is provided with an axial sealing pair and a radial sealing pair, the upper and lower matched step-shaped flanges are combined oppositely, an annular sealing cavity is formed between the axial sealing pair and the radial sealing pair, a piston having an automatic warning function is installed on the upper step-shaped flange, and a piston rod of the piston extends into the annular sealing cavity. The upper step-shaped flange is provided with a sampling hole, the sampling hole is communicated with the annular sealing cavity, and the top end of the sampling hole is provided with a plug. The flange is simple in structural design and capable of accurately positioning a leakage point, effectively improving the working efficiency of workers and reducing the labor intensity of the workers.

Description

Flange with warning function
technical field:
The present invention relates generally to the transmission of sealing technique, leak hunting technology and the alarm signal of flange, is mainly a kind of flange with warning function.
background technique:
In the various fields such as chemical industry, scientific research and system, flange is widely used as a kind of pipeline Placement.
In using process, due to the effect of the each side such as corrosion of alternating pressure and temperature and medium, can there is burn into distortion or occur surface imperfection affecting sealing effect in the pad in its sealing pair and sealing surface, inevitably cause fluid leakage.Common flange generally only has a set of sealing pair, mostly is plane sealing, when leak occurring adopt visually observe, the method such as smell discrimination, pressure variation differentiates.Artificial Site Detection, easily careless omission, particularly trace are revealed and are difficult for discovering.For rare gas, poisonous medium and inflammable and explosive flowing medium, not only need safe and reliable pipeline Placement, and need to when leaking generation, can find in time, exactly leak point, this point is particularly important.
summary of the invention:
Technical problem to be solved by this invention is to provide a kind of flange with warning function, and its structural design is simple, can accurately locate leak point, can effectively improve personnel's working efficiency and reduce personnel labor intensity.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of flange with warning function, include the upper and lower flange of supporting stepped shape, the upper and lower flange of stepped shape is provided with the bolt hole of a plurality of correspondences, it is characterized in that: the end face of described stepped shape lower flange is provided with axial O ring recess, axially in O ring recess, is provided with axial seal O type circle; The convex surface excircle of described stepped shape lower flange is provided with radially O ring recess, radially in O ring recess, be provided with radial seal O type circle, the upper and lower flange of described supporting stepped shape is involutory and be provided with ring packing cavity between axial seal O type circle and radial seal O type circle, on described stepped shape upper flange, in the position facing to ring packing cavity, the piston with auto-alarm function is installed, the piston rod of piston extend in ring packing cavity, on piston-top surface, have the piston gland with center hole, the piston rod of piston stretches out in the center hole of piston gland; Position at corresponding ring packing cavity on described stepped shape upper flange also offers sampling hole, and sampling hole is communicated with described ring packing cavity, and described sampling hole top is provided with plug.
In described axial O ring recess, can adopt the multiple plane sealing modes such as axial seal O type circle, plane sealing or tongue-and-groove sealing.
Described axial seal pair is that primary seal is secondary, adopt plane sealing mode to guarantee the normal sealing of fluid, radial seal pair is that auxiliary seal is secondary, adopt O type circle sealing means, when principal security is leaked in the secondary generation of primary seal, play auxiliary seal effect, reduce leakage rate, simultaneously axially and radially in the ring packing cavity between two sealing pairs, forming certain pressure, making the feeler mechanism can effective action.
The piston in the present invention with warning function, it can produce displacement or distortion under the effect of pressure, and this displacement or distortion can be carried out onsite alarming or make contact switch carries out remote alarms.
In the present invention, be provided with sampling hole, it is when report to the police occurring, and staff can carry out fluid sampling at this position, or connecting tube valve causes its place by leak fluid and analyzes.
Working principle of the present invention is:
When axial seal occurs to reveal, radial seal meeting plays auxiliary seal effect, reduce the leakage rate of medium, reveal medium simultaneously and can produce certain pressure in the space between axial seal and radial seal, piston can outwards slide under the effect of pressure, its piston rod part can stretch out outside the center hole of piston gland, prompting staff reveals herein, herein can also connecting terminal switch, make contact switch when piston rod part stretches out, can connect acoustic-optic alarm, or computer monitoring warning device, thereby reach warning object.Staff can sample checking at medium sampling hole place, or medium is guided to analytical instrument and confirm, thereby takes corresponding measure.
Applicable scope of the present invention: in the pipe-line system of the non-high vibration of mesolow, temperature stabilization (suggestion temperature range-10 ℃ ~ 100 ℃).
The present invention has carried out technological innovation by common flange, when can reaching common flange axial seal function, increased one or multi-channel radial seal, and between two sealing pairs, be provided with automatic alarm mechanism and detect mouth with sampling, for rare gas, poisonous medium and inflammable and explosive fluid and the strong flowing medium of permeability, can accurately locate revealing flange, accurately find the micro-leakage that is difficult for discovering, reduce flowing medium loss, improve security of system, reduce personnel labor intensity.
Advantage of the present invention is:
Structural design of the present invention is simple, can accurately locate leak point, can effectively improve personnel's working efficiency and reduce personnel labor intensity.
accompanying drawing explanation:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the piston Local map in Fig. 1.
Fig. 3 is the sampling hole Local map in Fig. 1.
embodiment:
Referring to Fig. 1, a kind of flange with warning function, include the upper and lower flange 1 of supporting stepped shape and 9, the upper and lower flange 1 of stepped shape and 9 is provided with the bolt hole 10 of a plurality of correspondences, the end face of described stepped shape lower flange 9 is provided with axial O ring recess 6, axially in O ring recess 6, is provided with axial seal O type circle 5, the convex surface excircle of described stepped shape lower flange is provided with radially O ring recess 8, radially in O ring recess 8, be provided with radial seal O type circle 7, in described supporting stepped shape, lower flange 1 and 9 is involutory and be provided with ring packing cavity 4 between axial seal O type circle and radial seal O type circle, on described stepped shape upper flange 1, in the position facing to ring packing cavity 4, the piston 3 with auto-alarm function is installed, the piston rod of piston 3 extend in ring packing cavity 4, on piston 3 end faces, there is the piston gland 2 with center hole, the piston rod of piston 3 stretches out in the center hole of piston gland 2, position at corresponding ring packing cavity 4 on described stepped shape upper flange 1 also offers sampling hole 11, and sampling hole 11 is communicated with described ring packing cavity 4, and described sampling hole 11 tops are provided with plug 12.
In described axial O ring recess, can adopt the multiple plane sealing modes such as axial seal O type circle, plane sealing or tongue-and-groove sealing.
During assembling, first according to common flange normal step connection upper and lower flange of the present invention, comprise installation shaft to and radial seal.After temperature stabilization, piston and piston gland are installed, then use plug shutoff medium sample tap, or sampling is installed at sample tap place and takes over and valve.

Claims (2)

1. the flange with warning function, include the upper and lower flange of supporting stepped shape, the upper and lower flange of stepped shape is provided with the bolt hole of a plurality of correspondences, it is characterized in that: the end face of described stepped shape lower flange is provided with axial O ring recess, axially in O ring recess, is provided with axial seal O type circle; The convex surface excircle of described stepped shape lower flange is provided with radially O ring recess, radially in O ring recess, be provided with radial seal O type circle, the upper and lower flange of described supporting stepped shape is involutory and be provided with ring packing cavity between axial seal O type circle and radial seal O type circle, on described stepped shape upper flange, in the position facing to ring packing cavity, the piston with auto-alarm function is installed, the piston rod of piston extend in ring packing cavity, on piston-top surface, have the piston gland with center hole, the piston rod of piston stretches out in the center hole of piston gland; Position at corresponding ring packing cavity on described stepped shape upper flange also offers sampling hole, and sampling hole is communicated with described ring packing cavity, and described sampling hole top is provided with plug.
2. a kind of flange with warning function according to claim 1, is characterized in that: in described axial O ring recess, can adopt the multiple plane sealing modes such as axial seal O type circle, plane sealing or tongue-and-groove sealing.
CN201410286287.9A 2014-06-23 2014-06-23 Flange having warning function Pending CN104075051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410286287.9A CN104075051A (en) 2014-06-23 2014-06-23 Flange having warning function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410286287.9A CN104075051A (en) 2014-06-23 2014-06-23 Flange having warning function

Publications (1)

Publication Number Publication Date
CN104075051A true CN104075051A (en) 2014-10-01

Family

ID=51596528

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410286287.9A Pending CN104075051A (en) 2014-06-23 2014-06-23 Flange having warning function

Country Status (1)

Country Link
CN (1) CN104075051A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104633368A (en) * 2014-12-08 2015-05-20 华国洋 Protection device used for outdoor water pipe
CN106641513A (en) * 2016-06-01 2017-05-10 北京宇航系统工程研究所 Double-channel metal dished ring flange sealing structure applicable to long-term storage
CN107575395A (en) * 2017-09-22 2018-01-12 上海阿波罗智能装备科技有限公司 Ship sea water pump
CN109027365A (en) * 2018-08-30 2018-12-18 安徽仕烽油压科技有限公司 One kind is from early warning type pressure valve
CN109091898A (en) * 2018-09-30 2018-12-28 温州家旺轻工机械有限公司 A kind of spherical concentrator
CN110500458A (en) * 2019-08-28 2019-11-26 北京航天发射技术研究所 Cryogenic vacuum face-flange
CN111022645A (en) * 2019-11-29 2020-04-17 西安航天动力研究所 Static sealing structure suitable for high-pressure medium
CN111322475A (en) * 2018-12-13 2020-06-23 王瑞六 Flange protection structure with detection and early warning functions and pipeline joint leakage prevention device
CN112113049A (en) * 2020-09-30 2020-12-22 张一宁 Flange with loosening warning function
CN112610766A (en) * 2020-12-11 2021-04-06 李沁 Pipeline waste gas leakage-proof structure
CN113700960A (en) * 2021-08-31 2021-11-26 西安航天动力研究所 Non-crushing type sealing connecting flange for liquid rocket engine
JP7414322B1 (en) 2022-10-21 2024-01-16 東海鋼管株式会社 Joint structure of flanged fluid pipe

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556229A1 (en) * 1975-12-13 1977-06-16 Bosch Gmbh Robert Expansion joint for pipes surrounded by safety wall - has monitor for fluid pressure within wall formed by bladder between pipe ends
US4410186A (en) * 1982-04-12 1983-10-18 Petroleum Designers, Inc. Sealing system for pressurized flanged joints
US5170659A (en) * 1991-04-08 1992-12-15 Kemp Development Corporation Apparatus and method for detecting fluid leakage
CN201884831U (en) * 2010-12-14 2011-06-29 常州腾龙汽车零部件制造有限公司 Joint structure of two-way sealing pipe
US20110185793A1 (en) * 2010-02-04 2011-08-04 Lockheed Martin Corporation Seal assembly with leak monitoring
CN203273111U (en) * 2013-05-29 2013-11-06 温州亚光机械制造有限公司 Rotary connector with in-place leakage detecting function
CN103398247A (en) * 2013-08-17 2013-11-20 吉安锐迈管道配件有限公司 High seal and corrosion-resistant seabed conveying pipeline connecting device
CN203348787U (en) * 2013-01-05 2013-12-18 中国航空工业集团公司西安飞机设计研究所 Fuel duct flange connecting device with double-sealing structure
CN103672297A (en) * 2013-12-18 2014-03-26 西南石油大学 Non-excavation sunken pipe protecting device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556229A1 (en) * 1975-12-13 1977-06-16 Bosch Gmbh Robert Expansion joint for pipes surrounded by safety wall - has monitor for fluid pressure within wall formed by bladder between pipe ends
US4410186A (en) * 1982-04-12 1983-10-18 Petroleum Designers, Inc. Sealing system for pressurized flanged joints
US5170659A (en) * 1991-04-08 1992-12-15 Kemp Development Corporation Apparatus and method for detecting fluid leakage
US20110185793A1 (en) * 2010-02-04 2011-08-04 Lockheed Martin Corporation Seal assembly with leak monitoring
US8261596B2 (en) * 2010-02-04 2012-09-11 Lockheed Martin Company Seal assembly with leak monitoring
CN201884831U (en) * 2010-12-14 2011-06-29 常州腾龙汽车零部件制造有限公司 Joint structure of two-way sealing pipe
CN203348787U (en) * 2013-01-05 2013-12-18 中国航空工业集团公司西安飞机设计研究所 Fuel duct flange connecting device with double-sealing structure
CN203273111U (en) * 2013-05-29 2013-11-06 温州亚光机械制造有限公司 Rotary connector with in-place leakage detecting function
CN103398247A (en) * 2013-08-17 2013-11-20 吉安锐迈管道配件有限公司 High seal and corrosion-resistant seabed conveying pipeline connecting device
CN103672297A (en) * 2013-12-18 2014-03-26 西南石油大学 Non-excavation sunken pipe protecting device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104633368A (en) * 2014-12-08 2015-05-20 华国洋 Protection device used for outdoor water pipe
CN106641513A (en) * 2016-06-01 2017-05-10 北京宇航系统工程研究所 Double-channel metal dished ring flange sealing structure applicable to long-term storage
CN107575395A (en) * 2017-09-22 2018-01-12 上海阿波罗智能装备科技有限公司 Ship sea water pump
CN109027365A (en) * 2018-08-30 2018-12-18 安徽仕烽油压科技有限公司 One kind is from early warning type pressure valve
CN109091898A (en) * 2018-09-30 2018-12-28 温州家旺轻工机械有限公司 A kind of spherical concentrator
CN111322475B (en) * 2018-12-13 2021-12-21 王瑞六 Flange protection structure with detection and early warning functions
CN111322475A (en) * 2018-12-13 2020-06-23 王瑞六 Flange protection structure with detection and early warning functions and pipeline joint leakage prevention device
CN110500458A (en) * 2019-08-28 2019-11-26 北京航天发射技术研究所 Cryogenic vacuum face-flange
CN111022645A (en) * 2019-11-29 2020-04-17 西安航天动力研究所 Static sealing structure suitable for high-pressure medium
CN111022645B (en) * 2019-11-29 2021-10-19 西安航天动力研究所 Static sealing structure suitable for high-pressure medium
CN112113049A (en) * 2020-09-30 2020-12-22 张一宁 Flange with loosening warning function
CN112610766A (en) * 2020-12-11 2021-04-06 李沁 Pipeline waste gas leakage-proof structure
CN112610766B (en) * 2020-12-11 2022-04-29 李沁 Pipeline waste gas leakage-proof structure
CN113700960A (en) * 2021-08-31 2021-11-26 西安航天动力研究所 Non-crushing type sealing connecting flange for liquid rocket engine
JP7414322B1 (en) 2022-10-21 2024-01-16 東海鋼管株式会社 Joint structure of flanged fluid pipe

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Application publication date: 20141001

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