CN105715890A - Leakage monitoring system of quickly disassembled flange - Google Patents

Leakage monitoring system of quickly disassembled flange Download PDF

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Publication number
CN105715890A
CN105715890A CN201610256112.2A CN201610256112A CN105715890A CN 105715890 A CN105715890 A CN 105715890A CN 201610256112 A CN201610256112 A CN 201610256112A CN 105715890 A CN105715890 A CN 105715890A
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CN
China
Prior art keywords
flange
leakage
monitoring system
leakage monitoring
metal clip
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
CN201610256112.2A
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Chinese (zh)
Inventor
郑小涛
黄苏
喻九阳
林纬
汪威
徐建民
王成刚
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.)
Wuhan Institute of Technology
Original Assignee
Wuhan Institute of Technology
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 Wuhan Institute of Technology filed Critical Wuhan Institute of Technology
Priority to CN201610256112.2A priority Critical patent/CN105715890A/en
Publication of CN105715890A publication Critical patent/CN105715890A/en
Pending legal-status Critical Current

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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
    • F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pipeline Systems (AREA)

Abstract

The invention relates to a leakage monitoring system of a quickly disassembled flange. The system comprises a plurality of sets of quickly disassembled flange connecting joints, a leakage protecting system and a leakage monitoring system, wherein each quickly disassembled flange connecting joint mainly comprises a pair of metal hoops, each metal hoop is semi-circular, a groove with a rectangular cross section is formed inside each metal hoop, and the pair of metal hoops is matched with each other to lock the edges of an upper flange plate and a lower flange plate of the flange; the leakage protecting system comprises a leakage medium treatment box and a main pipeline, and the leakage medium treatment box and the main pipeline are connected with each other in a communication manner; a plurality of leakage medium discharge channels are formed in the main pipelines; and the leakage monitoring system comprises a radio signal receiver and a computer. The system provided by the invention can be applied to complex working conditions to maintain a good sealing property of the flange for a long time and effectively prevent leakage of the flange, can be quickly disassembled, can monitor leakage condition of the flange in real time, and can quickly make an early warning response after leakage happens.

Description

A kind of leakage monitoring system of Quick Release flange
Technical field
The present invention relates to the sealing construction applications of pipe flange, be specifically related to the leakage monitoring system of a kind of Quick Release flange.
Background technology
Flange sealing structure is widely used in petrochemical industry because of its easy-to-dismount advantage.The a lot of fluids processed due to chemical plant are inflammable, explosive, poisonous or corrosive working medias, once occur leakage that material will be caused to run off and energy loss, cause environmental pollution, production can not be normally carried out, increase unscheduled maintenance and shut-down, even jeopardize the consequences such as health and life security.Traditional flange seal system can only play sealing function under the complex working conditions such as vibrations and lack the leakage monitoring to working media, and after leakage occurs, the dismounting maintenance of Flanged Connection System is complex loaded down with trivial details, wastes time and energy.
Summary of the invention
For above-mentioned technical problem, it is an object of the invention to provide the leakage monitoring system of a kind of Quick Release flange, this system can be applied to the complex working conditions such as middle low temperature, mesolow, vibrations, the long-term sealing keeping flange good, effectively prevent the leakage of flange, it is capable of quick dismounting, it is possible to the real-time leakage situation to flange is monitored, and can quickly make early warning response after leakage occurs.
For achieving the above object, the technical solution used in the present invention is:
A kind of leakage monitoring system of Quick Release flange, it is characterised in that: it includes some set Quick Release Flange joint joints, a set of leakage protection system and a set of leakage monitoring system；
Described Quick Release Flange joint joint is mainly made up of pair of metal clip, and described metal clip is semi-circular shape, offers the groove that cross section is rectangle inside it, and the pair of metal clip cooperates and the upper flange plate of flange and the edge of lower flange blocked；Two square-section grooves circumferentially it are provided with bottom described metal clip inboard groove, being equipped with O RunddichtringO in two square-section grooves bottom pair of metal clip recess, two O RunddichtringOs contact with the lateral surface crush seal of upper flange plate and lower flange respectively；The end face at described metal clip two ends is respectively equipped with the bar shaped boss being mutually matched and strip groove, described bar shaped boss and strip groove axial distribution；The outside at described metal clip two ends is equipped with connecting plate, and connecting plate offers bolt hole, connects by connecting plate and connecting bolt are fixing between pair of metal clip；
Described leakage protection system includes leaking medium treatment box and main pipeline, and leaking medium treatment box connects connection with main pipeline；Described main pipeline is provided with some leaking medium discharge-channels, some leaking medium discharge-channels connect one to one with some set Quick Release Flange joint joints, and described leaking medium discharge-channel is connected with one of them metal clip of Quick Release Flange joint joint；Being designed with the micro-pressure sensor with radio-signal transmitter and globe valve on every leaking medium discharge-channel, described globe valve is positioned on leaking medium discharge-channel near one end of main pipeline；
Described leakage monitoring system includes radio signal receiver and computer, and described radio signal receiver is for receiving the radio signal that the micro-pressure sensor with radio-signal transmitter sends, and sends radio signal to computer.
Described globe valve is electrical switch globe valve, and and between radio signal receiver, pass through dedicated radio link, computer control its Push And Release.
Described leakage monitoring system also includes the control panel being connected with computer, and described control panel is the state of each flange in display pipeline, and also controls the switch of all globe valves on pipeline.
Described leakage monitoring system also includes radio signal relay station, and for receiving the radio signal that the micro-pressure sensor with radio-signal transmitter sends, and processing and amplifying receives for radio signal receiver.
The upper surface of described upper flange plate is the inclined-plane of from inside to outside angled inclination, and the lower surface of described lower flange is also the inclined-plane of from inside to outside angled inclination.
It is additionally provided with bar pad between described bar shaped boss and strip groove.
The invention has the beneficial effects as follows: 1, the present invention can be applied to the complex working conditions such as middle low temperature, mesolow, vibrations, the long-term sealing keeping flange good, effectively prevent the leakage of flange, it is capable of quick dismounting, the leakage situation to flange that can be real-time is monitored, and can quickly make early warning response after leakage occurs.Metal clip seals structure it can be avoided that the problem concentrated of the stress of conventional bolt pretension, extends the service life of flange and pad, extends the time between overhauls(TBO), saves the cost of overhaul.2, define the O RunddichtringO as the second resealing with metal clip outside the upper and lower ring flange in the present invention, make the sealing effectiveness of flange be strengthened, reduce unplanned maintenance and shutdown times.3, the metal clip in the present invention avoids inflammable, explosive, poisonous after leakage occurs, harmful medium and contacts with extraneous with the structural design of leaking medium treatment box, thus avoiding the problems such as the environmental pollution even life security that causes because of leakage.4, the performance of flange Yu gasket seal can be made evaluation by the data of Computer record of the present invention, and can service life of accurate prediction flange and gasket seal.5, the early warning in the present invention can react, when for poisonous, harmful, inflammable, explosive working media, the position leaking generation in plant area fast and accurately, and the second layer of metal clip seals the time that the medium of leakage can be delayed to enter air, be conducive to withdrawing of personnel.
Accompanying drawing explanation
Fig. 1 is the connection diagram of Quick Release Flange joint joint and leakage protection system.
Fig. 2 is Quick Release Flange joint contact cross-section structural representation.
Fig. 3 is A place enlarged diagram in Fig. 2.
Fig. 4 is leakage monitoring system schematic diagram.
Fig. 5 is the schematic top plan view of flange section in the present invention.
In figure: 1 connecting plate, 2 metal clip, 3 upper flange plates, 4 O RunddichtringOs, 5 bar shaped boss, 6 gasket seals, 7 lower flanges, 8 strip grooves, 9 leaking medium discharge-channels, 10 micro-pressure sensors with radio-signal transmitter, 11 globe valves, 12 connecting bolts, 13 leaking medium treatment boxes, 14 radio signal relay stations, 15 radio signal receivers, 16 computers, 17 control panels, 18 main pipelines, 19 square-section grooves, 20 bar pads.
Detailed description of the invention
In order to be more fully understood that the present invention, below in conjunction with embodiment and accompanying drawing, technical scheme is described further (as Figure 1-5).
A kind of leakage monitoring system of Quick Release flange; it includes some set Quick Release Flange joint joints, a set of leakage protection system and a set of leakage monitoring system (the flange number that described " some sets " monitors as required is determined, the flange one to of Quick Release Flange joint joint and needs monitoring)；
Described Quick Release Flange joint joint is mainly made up of pair of metal clip 2, described metal clip 2 is semi-circular shape, offering groove that cross section is rectangle (i.e. metal clip 2 cross section for " [" type) inside it, the pair of metal clip 2 cooperates and the upper flange plate 3 of flange (described flange is made up of upper flange plate 3, lower flange 7 and gasket seal 6) and the edge of lower flange 7 is blocked (sealed bundle complete by the edge of flange wraps)；Two square-section grooves 19 circumferentially it are provided with bottom described metal clip 2 inboard groove, being equipped with O RunddichtringO 4 in two square-section grooves 19 of pair of metal clip 2 (inner side) bottom portion of groove, two O RunddichtringOs 4 contact (being provided with O RunddichtringO 4 inside described metal clip 2 to extrude after installation is complete outside the ring flange of upper flange plate 3 and lower flange 7 to form second level sealing) respectively with the lateral surface crush seal of upper flange plate 3 and lower flange 7；The end face at described metal clip 2 two ends is respectively equipped with the bar shaped boss 5 and strip groove 8 that are mutually matched, described bar shaped boss 5 and strip groove 8 axial distribution；The outside at described metal clip 2 two ends is equipped with connecting plate 1, and connecting plate 1 offers bolt hole, by connecting plate 1 and the fixing connection of connecting bolt 12 between pair of metal clip 2；
Described leakage protection system includes leaking medium treatment box 13 and main pipeline 18, and leaking medium treatment box 13 connects connection with main pipeline 18；Described main pipeline 18 is provided with some leaking medium discharge-channels 9, some leaking medium discharge-channels 9 connect one to one with some set Quick Release Flange joint joints, and described leaking medium discharge-channel 9 is connected with one of them metal clip 2 of Quick Release Flange joint joint；Every leaking medium discharge-channel 9 is designed with the micro-pressure sensor 10 with radio-signal transmitter and globe valve 11, described globe valve 11 is positioned on leaking medium discharge-channel 9 near one end (micro-pressure sensor 10 with radio-signal transmitter is positioned on leaking medium discharge-channel 9 near one end of metal clip 2, for monitoring the pressure change in pair of metal clip 2 chamber) of main pipeline 18；
Described leakage monitoring system includes radio signal receiver 15 and computer 16, and described radio signal receiver 15 is for receiving the radio signal that the micro-pressure sensor 10 with radio-signal transmitter sends, and radio signal sends to computer 16.
Described globe valve 11 is electrical switch globe valve, and and between radio signal receiver 15, pass through dedicated radio link (unification is controlled) by control panel 17, computer control its Push And Release.
Described leakage monitoring system also includes the control panel 17 being connected with computer 16, described control panel 17 state of each flange in display pipeline, and also controls the switch of all globe valves 11 on pipeline.
Described computer 16 radio signal is recorded with process after, the situation of change of pressure is reflected on control panel 17, if leakage reaches respective specified amount, display lamp corresponding with the flange that leakage occurs above control panel 17 is reddened by green and sounded the alarm, and now the operator of Central Control Room can know the position of the flange that leakage occurs fast and accurately according to the display lamp of control panel 17.
Described leakage monitoring system also includes radio signal relay station 14, and for receiving the radio signal that the micro-pressure sensor 10 with radio-signal transmitter sends, and processing and amplifying receives for radio signal receiver 15.
The inclined-plane that upper surface is from inside to outside angled inclination of described upper flange plate 3, the lower surface of described lower flange 7 is also the inclined-plane of from inside to outside angled inclination.Namely slope process has all been done outside the ring flange of upper flange plate 3 and lower flange 7.After metal clip 2 clamping, contact of incline plane outside the inner side of metal clip 2 and upper flange plate 3, lower flange 7 also extrudes upper flange plate 3 and lower flange 5 and provides enough pretightning force for Flanged Connection System.
Bar pad 20 (being namely provided with bar pad 20 in groove, be used for sealing) it is additionally provided with between described bar shaped boss 5 and strip groove 8.
Described leaking medium treatment box 13 material is chosen according to the character of medium.
The process that data signal is analyzed processing by the present embodiment Computer 16 is as follows:
If the external diameter of described gasket seal 6 is D1, thickness is h1, upper flange plate 3 and lower flange 7 end face outside diameter are D2, two square-section groove 19 inner distance of mounting O-shaped sealing ring 4 are h2, the internal diameter after metal clip 2 clamping is D3, the cavity volume formed with gasket seal 6 outside end face of flange is V1, inside metal clip 2 with end face of flange outside formed cavity volume be V2, then total cavity volume V=V of being formed1+V2；
As from the foregoing:
V 1 = [ ( D 2 2 ) 2 - ( D 1 2 ) 2 ] πh 1 = πh 1 4 ( D 2 2 - D 1 2 ) ; V 2 = [ ( D 3 2 ) 2 - ( D 2 2 ) 2 ] πh 2 = πh 2 4 ( D 3 2 - D 2 2 ) ;
Chamber volume is:
V = V 1 + V 2 = πh 1 4 ( D 2 2 - D 1 2 ) + πh 2 4 ( D 3 2 - D 2 2 ) = π 4 ( D 3 2 h 2 - D 2 2 h 2 + D 2 2 h 1 - D 1 2 h 1 ) ;
If ambient temperature is T, under ambient temperature, the molal weight of air is M1, under ambient temperature, the molal weight of working media is M2Under ambient temperature, air and the mixed molal weight of leaking medium are M3, the chamber pressure before leakage is P1, the chamber pressure after leakage is P2, thenBy The Ideal-Gas Equation have leakage ante-chamber room air amount of substance be:Then the quality of leakage front chamber air is:Leaking the amount of substance that gas occurs to mix in rear chamber is:The quality of the mixing gas after leakage is:
The quality of leaking medium is as from the foregoing:
Then the slip after elapsed time t is:
Situation according to factory process condition selects warning slip ρ0, when computer 16 process after slip ρ >=ρ0Computer-chronograph 16 sends instruction to control panel 17, and control panel 17 responds after receiving instruction.
The Application Example being only the present invention described above, with this interest field limiting the present invention, therefore can not change according to the equivalence that the present patent application the scope of the claims is made, still belongs to protection scope of the present invention certainly.

Claims (6)

1. the leakage monitoring system of a Quick Release flange, it is characterised in that: it includes some set Quick Release Flange joint joints, a set of leakage protection system and a set of leakage monitoring system；
Described Quick Release Flange joint joint is mainly made up of pair of metal clip (2), described metal clip (2) is semi-circular shape, offering the groove that cross section is rectangle inside it, the pair of metal clip (2) cooperates and the upper flange plate (3) of flange and the edge of lower flange (7) is blocked；Two square-section grooves (19) circumferentially it are provided with bottom described metal clip (2) inboard groove, being equipped with O RunddichtringO (4) in two square-section grooves (19) of pair of metal clip (2) bottom portion of groove, two O RunddichtringOs (4) contact with the lateral surface crush seal of upper flange plate (3) and lower flange (7) respectively；The end face at described metal clip (2) two ends is respectively equipped with the bar shaped boss (5) and strip groove (8) that are mutually matched, described bar shaped boss (5) and strip groove (8) axial distribution；The outside at described metal clip (2) two ends is equipped with connecting plate (1), and connecting plate (1) offers bolt hole, connects by connecting plate (1) and connecting bolt (12) are fixing between pair of metal clip (2)；
Described leakage protection system includes leaking medium treatment box (13) and main pipeline (18), and leaking medium treatment box (13) connects connection with main pipeline (18)；Described main pipeline (18) is provided with some leaking medium discharge-channels (9), some leaking medium discharge-channels (9) connect one to one with some set Quick Release Flange joint joints, and described leaking medium discharge-channel (9) is connected with one of them metal clip (2) of Quick Release Flange joint joint；Being designed with the micro-pressure sensor (10) with radio-signal transmitter and globe valve (11) on every leaking medium discharge-channel (9), described globe valve (11) is positioned at the upper one end near main pipeline (18) of leaking medium discharge-channel (9)；
Described leakage monitoring system includes radio signal receiver (15) and computer (16), described radio signal receiver (15) is for receiving the radio signal that the micro-pressure sensor (10) with radio-signal transmitter sends, and radio signal sends to computer (16).
2. the leakage monitoring system of a kind of Quick Release flange according to claim 1, it is characterized in that: described globe valve (11) is electrical switch globe valve, and and by dedicated radio link between radio signal receiver (15), computer control its Push And Release.
3. the leakage monitoring system of a kind of Quick Release flange according to claim 2, it is characterized in that: described leakage monitoring system also includes the control panel (17) being connected with computer (16), described control panel (17) state of each flange in display pipeline, and also control the switch of all globe valves (11) on pipeline.
4. the leakage monitoring system of a kind of Quick Release flange according to claim 1, it is characterized in that: described leakage monitoring system also includes radio signal relay station (14), for the radio signal that the micro-pressure sensor (10) received with radio-signal transmitter sends, and processing and amplifying receives for radio signal receiver (15).
5. the leakage monitoring system of a kind of Quick Release flange according to claim 1, it is characterized in that: the inclined-plane that upper surface is from inside to outside angled inclination of described upper flange plate (3), the lower surface of described lower flange (7) is also the inclined-plane of from inside to outside angled inclination.
6. the leakage monitoring system of a kind of Quick Release flange according to claim 1, it is characterised in that: it is additionally provided with bar pad (20) between described bar shaped boss (5) and strip groove (8).
CN201610256112.2A 2016-04-22 2016-04-22 Leakage monitoring system of quickly disassembled flange Pending CN105715890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610256112.2A CN105715890A (en) 2016-04-22 2016-04-22 Leakage monitoring system of quickly disassembled flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610256112.2A CN105715890A (en) 2016-04-22 2016-04-22 Leakage monitoring system of quickly disassembled flange

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CN105715890A true CN105715890A (en) 2016-06-29

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072406A (en) * 2010-11-17 2011-05-25 内蒙古伊利实业集团股份有限公司 Device and method for detecting product pipeline leakage condition
US20130013228A1 (en) * 2011-07-06 2013-01-10 Saudi Arabian Oil Company Airport jet fuel piping leak detection and location system through pressure and cathodic protection soil potential
CN203010104U (en) * 2012-11-30 2013-06-19 江苏黑松林粘合剂厂有限公司 Quick-detachment and mounting, environment-friendly and drip-proof type protecting sleeve
CN104567747A (en) * 2015-01-20 2015-04-29 武汉工程大学 High-temperature flange leakage monitoring device based on laser rangefinder
CN204459547U (en) * 2015-01-31 2015-07-08 郑州大学 A kind of pipeline sealing device
CN105423018A (en) * 2016-01-08 2016-03-23 武汉工程大学 Leakage detecting device of high-temperature flange connecting system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072406A (en) * 2010-11-17 2011-05-25 内蒙古伊利实业集团股份有限公司 Device and method for detecting product pipeline leakage condition
US20130013228A1 (en) * 2011-07-06 2013-01-10 Saudi Arabian Oil Company Airport jet fuel piping leak detection and location system through pressure and cathodic protection soil potential
CN203010104U (en) * 2012-11-30 2013-06-19 江苏黑松林粘合剂厂有限公司 Quick-detachment and mounting, environment-friendly and drip-proof type protecting sleeve
CN104567747A (en) * 2015-01-20 2015-04-29 武汉工程大学 High-temperature flange leakage monitoring device based on laser rangefinder
CN204459547U (en) * 2015-01-31 2015-07-08 郑州大学 A kind of pipeline sealing device
CN105423018A (en) * 2016-01-08 2016-03-23 武汉工程大学 Leakage detecting device of high-temperature flange connecting system

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