CN105673966A - Leakage protection and monitoring system for high-temperature flange - Google Patents

Leakage protection and monitoring system for high-temperature flange Download PDF

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Publication number
CN105673966A
CN105673966A CN201610252910.8A CN201610252910A CN105673966A CN 105673966 A CN105673966 A CN 105673966A CN 201610252910 A CN201610252910 A CN 201610252910A CN 105673966 A CN105673966 A CN 105673966A
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CN
China
Prior art keywords
flange
described
leakage
monitoring system
metal clip
Prior art date
Application number
CN201610252910.8A
Other languages
Chinese (zh)
Inventor
郑小涛
黄苏
喻九阳
林纬
汪威
徐建民
王成刚
Original Assignee
武汉工程大学
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
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Application filed by 武汉工程大学 filed Critical 武汉工程大学
Priority to CN201610252910.8A priority Critical patent/CN105673966A/en
Publication of CN105673966A publication Critical patent/CN105673966A/en

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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
    • F16L23/00Flanged joints
    • 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00Protection or supervision of installations
    • F17D5/02Preventing, monitoring, or locating loss

Abstract

The invention relates to a leakage protection and monitoring system for a high-temperature flange. The leakage protection and monitoring system is characterized by comprising a plurality of sets of flange sealing systems, a plurality of sets of leakage protection systems and a set of leakage monitoring system, wherein each flange sealing systems mainly comprise a pair of metal hoops, and the pair of the metal hoops are matched with each other to seal and clamp edges of flanges; the leakage protection systems comprise buffer tanks and leaking medium treatment tanks; the buffer tanks and the leaking medium treatment tanks are communicated and connected through leaking channels; the buffer tanks are communicated and connected with the metal hoops through leaking medium discharge channels; the leakage monitoring system comprises a signal tower and a central control chamber; a signal emitter is arranged on the signal tower; the signal emitter is connected with a pressure gauge. The leakage protection and monitoring system can be applied to complex working situations such as high temperature, high pressure and vibration, a good sealing property can be maintained for a long time, leakage of flanges can be effectively prevented, and leakage situations of flanges at key points of a whole factory area can be monitored in real time.

Description

The leak protection of a kind of high-temperature flange and monitoring system

Technical field

The present invention relates to the leak protection of high-temperature flange and detection field, be specifically related to leak protection and the monitoring system of a kind of high-temperature flange.

Background technology

Flange sealing structure is widely used in petrochemical industry because of its easy-to-dismount advantage. The static seal point producing five set main devices of 30,000,000,000,000 tons of ethylene, six set corollary apparatus and seven auxiliary shops according to statistics in a large-scale petroleum chemical plant per year is ten hundreds of. The protection keypoint part flange of full plant area to be leaked and monitoring are inappropriate by manpower and enhancing patrol. The a lot of fluids processed due to chemical plant are inflammable, explosive, poisonous or corrosive working medias, and generally have pressure and temperature, 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. What in traditional Flanged Connection System, bolt was subject to is tensile load, and bolt can produce stress relaxation effect under the high temperature conditions. Traditional is bolted under the operating mode that high temperature, high pressure, vibrations etc. are complicated to be easy to occur loosening or pretightning force deficiency to leak, and traditional flange connection is difficult to be monitored and early warning after leakage occurs. So the protection leak the keypoint part flange within the scope of full plant area and early warning are the directions sealing development from now on.

Summary of the invention

For above-mentioned technical problem; it is an object of the invention to provide the leak protection of a kind of high-temperature flange and monitoring system; this system can be applied to the complex working conditions such as high temperature, high pressure, vibrations; the sealing that long-term maintenance is good; effectively prevent the leakage of flange; the flange of full plant area keypoint part can be carried out real-time leakage situation monitoring, after leakage occurs, have prior-warning device early warning.

For achieving the above object, the technical solution used in the present invention is:

The leak protection of a kind of high-temperature flange and monitoring system, it is characterised in that: it includes some set flange seal systems, some set leakage protection systems and a set of leakage monitoring system;

Described flange seal system 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 blocked by the edge seal of flange; The upper flange plate of described flange and the surface of lower flange is circumferentially distributed a deep blind hole of delineation, the pair of metal clip is provided with the bolt hole corresponding with depthkeeping blind hole, is screwed with depthkeeping bolt in bolt hole, and depthkeeping bolt end pushes against depthkeeping blind via bottom; 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 inboard groove, two O RunddichtringOs contact with the lateral surface crush seal of upper flange plate and lower flange respectively; 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; The end face at described metal clip two ends is respectively equipped with the groove and projection that are mutually matched, described groove and protruding axial distribution, between groove and projection, is additionally provided with bar pad;

Described leakage protection system includes surge tank and leaking medium treatment box, is connected by leakage path connection between surge tank and leaking medium treatment box; Leakage path is provided with globe valve, and surge tank is provided with Pressure gauge; Described surge tank is connected with a metal clip in flange seal system by leaking medium discharge-channel;

Described leakage monitoring system includes signal tower and central control room, and signal tower is provided with signal projector, and signal projector is connected with Pressure gauge; Described central control room includes signal receiver and computer, and described signal receiver is for receiving the signal that signal projector sends, and delivers it to computer.

Described Pressure gauge is connected to an alarm device.

Described globe valve is electrical switch globe valve, and Pressure gauge is electronic pressure gage, and between the two by data wire or dedicated radio link.

Described central control room also includes control panel, and described control panel is the state of each flange in display pipeline, and can control the switch of valve on pipeline.

Having the beneficial effect that acquired by the present invention

1, the system in the present invention can be applied to the complex working conditions such as high temperature, high pressure, vibrations, the sealing that long-term maintenance is good, effectively prevent the leakage of flange, the flange of full plant area keypoint part can be carried out real-time leakage situation monitoring, prior-warning device early warning is had after leakage occurs, with prompting, personnel withdraw, and have surge tank to withdraw for personnel as the buffering of leakage to race against time, and have leaking medium treatment box can to the focusing on of classifying of medium of leakage, with avoid the medium of leakage directly and extraneous contact and cause personnel to injure or contaminated environment;

2, the present invention is subject to compressive load and unconventional tensile load for the depthkeeping bolt of pretension in metal clip, and generally high temperature bolt slack under compression is less than the slack under stretching condition, compared with sealing structure with conventional flange, improve the service life of bolt;

3, the bolt positioning hole depthkeeping blind hole of flange in the present invention, does not open hole, enhances the strength and stiffness of flange, and large diameter bolt can be adopted to connect, and while bolt bearing capacity so can be made to reduce, increases pad thrust, it is ensured that its being completely embedded property;

4, being provided with the O RunddichtringO as the second resealing inside the metal clip in the present invention, secondary seal structure makes the sealing effectiveness of flange better, reduces unplanned maintenance and shutdown times;

5. leakage can be made a response by prior-warning device in the present invention fast and accurately, it is possible to early warning timely is withdrawn with prompting personnel;

6. the control panel in the present invention can know the flange present position that leakage occurs accurately, and can prevent the further generation of leakage by controlling switch; Computer can provide the slip of flange seal system after leakage occurs; The flange of full plant area keypoint part can be carried out leak protection and monitoring and warning by central control room simultaneously.

Accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of the present invention.

Fig. 2 is the schematic top plan view of flange section in the present invention.

Fig. 3 is flange seal system structure schematic diagram (i.e. schematic cross-section) in the present invention.

In figure: 1 connecting plate, 2 metal clip, 3 depthkeeping bolts, 4 check washers, 5 upper flange plates, 6 O RunddichtringOs, 7 square-section grooves, 8 leaking medium discharge-channels, 9 surge tanks, 10 Pressure gauges, 11 alarm devices, 12 globe valves, 13 pads, 14 lower flanges, 15 bar pads, 16 connecting bolts, 17 leakage paths, 18 leaking medium treatment boxes, 19 signal towers, 20 signal projectors, 21 data lines or Internet of Things, 22 signal receivers, 23 computers, 24 control panels, 25 depthkeeping blind holes.

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 1-3).

The leak protection of a kind of high-temperature flange and monitoring system, it includes some set flange seal systems, some set leakage protection systems and a set of leakage monitoring system (the flange number that described " some sets " monitors as required is determined, flange seal system and leakage protection system should with the flanges one to needing monitoring);

Described flange seal system 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 edge seal of flange (described flange is made up of upper flange plate 5, lower flange 14 and pad 13) is blocked (sealed bundle complete by the edge of flange wraps), the upper flange plate 5 of described flange and surface (the i.e. upper surface of upper flange plate 5 of lower flange 14, the lower surface of lower flange 14) circumferentially distributed there is a deep blind hole 25 of delineation, the pair of metal clip 2 is provided with bolt hole (the i.e. quantity corresponding with depthkeeping blind hole 25, position, size is corresponding), it is screwed with between depthkeeping bolt 3(depthkeeping bolt 3 and metal clip 2 in bolt hole and is provided with check washer 4), depthkeeping bolt 3 termination pushes against bottom depthkeeping blind hole 25 that (the ring flange Surface Machining of described upper flange plate 5 and lower flange 14 has depthkeeping blind hole 25, pretightning force is provided by depthkeeping bolt 3 for pad 13 after metal clip 2 clamping upper flange plate 5 with lower flange 14, form the first order to seal), two square-section grooves 7 circumferentially it are provided with bottom described metal clip 2 inboard groove, being equipped with O RunddichtringO 6 in two square-section grooves 7 bottom pair of metal clip 2 inboard groove, two O RunddichtringOs 6 contact (being provided with O RunddichtringO 6 inside described metal clip 2 to extrude after installation is complete outside the ring flange of upper flange plate 5 and lower flange 14 to form second level sealing) respectively with the lateral surface crush seal of upper flange plate 5 and lower flange 14, 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 16 between pair of metal clip 2, the end face at described metal clip 2 two ends is respectively equipped with the groove and projection that are mutually matched, described groove and protruding axial distribution, is additionally provided with in bar pad 15(and groove between groove and projection and is provided with bar pad 15, be used for sealing),

Described leakage protection system includes surge tank 9 and leaking medium treatment box 18, is connected by leakage path 17 connection between surge tank 9 and leaking medium treatment box 18; Leakage path 17 is provided with globe valve 12, and surge tank 9 is provided with Pressure gauge 10; Described surge tank 9 is connected (namely leaking medium enters surge tank 9 by leaking medium discharge-channel 8, enters in leaking medium treatment box 18) again through leakage path 17 by leaking medium discharge-channel 8 with the metal clip 2 in flange seal system;

Described leakage monitoring system includes signal tower 19 and central control room, and signal tower 19 is provided with signal projector 20, and signal projector 20 is connected with Pressure gauge 10; Described central control room includes signal receiver 22 and computer 23, and described signal receiver 22 is for receiving the signal that signal projector 20 sends, and delivers it to computer 23.

Described Pressure gauge 10 is connected to an alarm device 11.

Described globe valve 12 is electrical switch globe valve, and Pressure gauge 10 is electronic pressure gage, and between the two by data wire or dedicated radio link.

Described central control room also includes control panel 24, described control panel 24 state of each flange in display pipeline, and can control the switch of valve on pipeline.

The leak protection of a kind of high-temperature flange and the use principle of monitoring system:

1, the pressure recorded is delivered to alarm device 11 through data wire or wireless form by Pressure gauge 10, and when the pressure in the surge tank 9 that Pressure gauge 10 records reaches the preset value of alarm device, alarm activation horn blew are to notify that personnel withdraw;

2, the switch that can trigger globe valve 12 when the pressure in the surge tank 9 that Pressure gauge 10 records reaches and presets and release value is opened, and the leaking medium in surge tank 9 is released to leaking medium treatment box 18 to reduce the pressure in surge tank 9 through leakage path 17;

3, the force value data line recorded is delivered to signal tower 19 by Pressure gauge 10; The pressure signal received is sent to signal through signal projector 20 with the form of data line or Internet of Things 21 and receives tower 22 by signal tower 19; Signal receives tower 22 and passes the signal to computer 23 upon receipt of the signals, and computer 23 processes to the received signal, and is shown on control panel 24 with the form of slip numbers after data process on corresponding display screen with flange. Having staff in central control room, staff, after discovery has leakage to occur, controls the opening and closing of valve on leakage flange upper and lower pipeline by the switch on control panel 24 and avoids the further of leakage to occur.

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 (4)

1. a high-temperature flange leak protection and monitoring system, it is characterised in that: it includes some set flange seal systems, some set leakage protection systems and a set of leakage monitoring system;
Described flange seal system is mainly made up of pair of metal clip (2), and described metal clip (2) is semi-circular shape, offers the groove that cross section is rectangle inside it, and the pair of metal clip (2) cooperates and blocked by the edge seal of flange; The upper flange plate (5) of described flange and the surface of lower flange (14) is circumferentially distributed the deep blind hole of a delineation (25), the pair of metal clip (2) is provided with the bolt hole corresponding with depthkeeping blind hole (25), being screwed with depthkeeping bolt (3) in bolt hole, depthkeeping bolt (3) termination pushes against depthkeeping blind hole (25) bottom; Two square-section grooves (7) circumferentially it are provided with bottom described metal clip (2) inboard groove, being equipped with O RunddichtringO (6) in two square-section grooves (7) bottom pair of metal clip (2) inboard groove, two O RunddichtringOs (6) contact with the lateral surface crush seal of upper flange plate (5) and lower flange (14) respectively; 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 (16) are fixing between pair of metal clip (2); The end face at described metal clip (2) two ends is respectively equipped with the groove and projection that are mutually matched, described groove and protruding axial distribution, between groove and projection, is additionally provided with bar pad (15);
Described leakage protection system includes surge tank (9) and leaking medium treatment box (18), is connected by leakage path (17) connection between surge tank (9) and leaking medium treatment box (18); Leakage path (17) is provided with globe valve (12), and surge tank (9) is provided with Pressure gauge (10); Described surge tank (9) is connected with a metal clip (2) in flange seal system by leaking medium discharge-channel (8);
Described leakage monitoring system includes signal tower (19) and central control room, and signal tower (19) is provided with signal projector (20), and signal projector (20) is connected with Pressure gauge (10); Described central control room includes signal receiver (22) and computer (23), and described signal receiver (22) is used for receiving the signal that signal projector (20) sends, and delivers it to computer (23).
2. a kind of high-temperature flange according to claim 1 leak protection and monitoring system, it is characterised in that: described Pressure gauge (10) is connected to an alarm device (11).
3. a kind of high-temperature flange according to claim 1 leak protection and monitoring system; it is characterized in that: described globe valve (12) is electrical switch globe valve; Pressure gauge (10) is electronic pressure gage, and between the two by data wire or dedicated radio link.
4. a kind of high-temperature flange according to claim 1 leak protection and monitoring system; it is characterized in that: described central control room also includes control panel (24); described control panel (24) state of each flange in display pipeline, and the switch of valve on pipeline can be controlled.
CN201610252910.8A 2016-04-22 2016-04-22 Leakage protection and monitoring system for high-temperature flange CN105673966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610252910.8A CN105673966A (en) 2016-04-22 2016-04-22 Leakage protection and monitoring system for high-temperature flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610252910.8A CN105673966A (en) 2016-04-22 2016-04-22 Leakage protection and monitoring system for high-temperature flange

Publications (1)

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CN105673966A true CN105673966A (en) 2016-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106764458A (en) * 2016-12-28 2017-05-31 核动力运行研究所 Flange leakage monitoring device and high energy pipe network flange leakage monitoring regulator control system
CN109555978A (en) * 2018-12-10 2019-04-02 华东理工大学 A kind of flange leakage on-Line Monitor Device based on ultrasonic acoustic generator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100127460A1 (en) * 2008-11-26 2010-05-27 Odyssian Technology, Llc Seals with integrated leak detection capability
US20120018014A1 (en) * 2010-07-21 2012-01-26 Leslie Fernandes Joint Cover with Manifold for Duct Leak Detection System
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
CN104595726A (en) * 2015-01-19 2015-05-06 傅永财 Natural gas pipeline system having leakage warming function
CN105114820A (en) * 2015-10-08 2015-12-02 苏州市海神达机械科技有限公司 Pipeline flange
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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100127460A1 (en) * 2008-11-26 2010-05-27 Odyssian Technology, Llc Seals with integrated leak detection capability
US20120018014A1 (en) * 2010-07-21 2012-01-26 Leslie Fernandes Joint Cover with Manifold for Duct Leak Detection System
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
CN104595726A (en) * 2015-01-19 2015-05-06 傅永财 Natural gas pipeline system having leakage warming function
CN104567747A (en) * 2015-01-20 2015-04-29 武汉工程大学 High-temperature flange leakage monitoring device based on laser rangefinder
CN105114820A (en) * 2015-10-08 2015-12-02 苏州市海神达机械科技有限公司 Pipeline flange
CN105423018A (en) * 2016-01-08 2016-03-23 武汉工程大学 Leakage detecting device of high-temperature flange connecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106764458A (en) * 2016-12-28 2017-05-31 核动力运行研究所 Flange leakage monitoring device and high energy pipe network flange leakage monitoring regulator control system
CN109555978A (en) * 2018-12-10 2019-04-02 华东理工大学 A kind of flange leakage on-Line Monitor Device based on ultrasonic acoustic generator

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Application publication date: 20160615