CN107401641A - A kind of universal in-service online collecting mechanism of flange seal - Google Patents
A kind of universal in-service online collecting mechanism of flange seal Download PDFInfo
- Publication number
- CN107401641A CN107401641A CN201710687909.2A CN201710687909A CN107401641A CN 107401641 A CN107401641 A CN 107401641A CN 201710687909 A CN201710687909 A CN 201710687909A CN 107401641 A CN107401641 A CN 107401641A
- Authority
- CN
- China
- Prior art keywords
- flange
- pair
- shaped band
- face
- shaped
- 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.)
- Granted
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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
- F16L23/006—Attachments
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- 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
- F16L23/165—Flanged joints characterised by the sealing means comprising a viscous mass, e.g. hardenable
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- 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
- F16L23/167—Flanged joints characterised by the sealing means in connection with the appearance or detection of leaks
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- 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
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- 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 kind of universal in-service online collecting mechanism of flange seal, including：C-shaped band with notch part, the inner sealing surface for a pair of flange outer diameter Cylindrical Surfaces Contacts sealing that the inner surface of the axial end of C-shaped band two is formed and is mutually butted respectively, the outer surface of C-shaped band at least forms a lock ring face；At least one annular restraint zone, annular restraint zone lock ring is on lock ring face, so that the inner sealing surface of C-shaped band compresses a pair of flange outer diameter faces of cylinder being mutually butted respectively, and then to form collecting chamber between the inner surface and the outer ring surface for the annular gasket being pressed on a pair of flange seal end faces and the bolt bearing inner face of a pair of flanges of C-shaped band, the notch part formation collecting chamber of C-shaped band leads leak.
Description
Technical field
It is more particularly to a kind of to be used for volatile organic matter VOCs, have the present invention relates to flange seal leak detection field
The universal in-service flange seal that the dangerous toxic gas leakage such as malicious pernicious gas HAPs and flammable explosive gas is collected is received online
Collecting mechanism.
Background technology
The detection method of equipment and line component VOCs and HAPs source of leaks is LDAR at present, i.e., based on portable flame from
Sonization (FID), catalysis oxidation or combustion method, infrared absorption method (IR or NDIR) or photoionization (PID) instrument it is artificial periodically
Detection and the method for on-call maintenance.Portable instrument power consumption is big, it is impossible to carries out on-line real time monitoring to flange seal source of leaks.
Therefore, there is Chinese patent application publication No. CN101692353A to disclose a kind of leakage-detectable constant-stress sealing gasket at present
Piece, with reference to shown in Fig. 1, it include metallic inner 1, outer shroud 2, the first sealing ring 3 being arranged between metallic inner 1 and outer shroud 2,
It is arranged on second sealing ring 4 in the outside of the first sealing ring 3, the upper surface and lower surface point of the first sealing ring 3 and the second sealing ring 4
The upper surface and lower end of the upper surface and lower surface of outer shroud 2 and inner ring 1, the first sealing ring 3 and the second sealing ring 4 are not protruded from
Face contacts and sealed with the faying face of connector respectively, and the part side table of the external peripheral surface of the first sealing ring 3, outer shroud 2
The inner circumferential surface of face and the second sealing ring 4 forms groove 6,8, and the faying face of groove 6,8 and connector just forms sealing
Anti-leak cavity, cavity is connected by leak 7 with the external world.When the surface of the first sealing ring 3, which exists, to be leaked, medium can enter
Enter into the cavity and be diffused into by leak 7 on the outside of gasket seal, pressure gauge or sensor etc. are set in the outside of leak 7
Detection means, maintenance personal can be found that leakage soon.
But there is following shortcoming in above-mentioned patent：
1st, ring is collected in flange seal leakage and main seal ring is in together on a gasket seal, to collect letting out for flange seal
Leakage must remove existing flange bolt, change existing gasket seal, though the current sealing property of original gasket seal or
Technical indicator, which is no more than as defined in national standard or professional standard, to be required, cost is high.
2nd, the performance of primary seal can be influenceed, it is necessary to more if the auxiliary seal ring dimension overproof for collecting primary seal leakage
Big accurate bolt pretightening, it is not easy to the installation at scene.
3rd, the presence due to leaking or leading small opening 7 causes the conventional pads such as the thickness ratio metal wound gasket of such a constant stress pad
Piece thickness 0.5-1.0mm, and because the first sealing ring 3 (primary seal) and the second sealing ring 4 (auxiliary seal) are generally graphite etc.
Nonmetallic, when in-site installation is entered in in-service flange gap, main and auxiliary sealing ring easily damages so as to loss of seal or collects work(
Energy；If it is too small to lead small opening 7, easily blocked by heavy liquid or tar, leakage function is drawn in forfeiture, and auxiliary may can also be damaged for a long time by going down
Sealing.
4th, it is not suitable for male female face and tenon/groove flange sealing surface pattern.
The content of the invention
It is an object of the invention to for deficiencies of the prior art and defect, there is provided a kind of universal in-service method
Orchid seals online collecting mechanism, to solve the above problems.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of universal in-service online collecting mechanism of flange seal, including：
C-shaped band with notch part, a pair of methods that the inner surface of the axial end of C-shaped band two is formed and is mutually butted respectively
The inner sealing surface of blue outer diameter cylindrical face contact sealing, the outer surface of the C-shaped band at least forms a lock ring face；
At least one annular restraint zone, the annular restraint zone lock ring is on the lock ring face so that the C-shaped band it is interior close
Front cover compresses a pair of flange outer diameter faces of cylinder being mutually butted respectively, and then causes the inner surface of the C-shaped band with being pressed in
Formed between the outer ring surface of annular gasket on a pair of flange seal end faces and the bolt bearing inner face of the pair of flange
Collecting chamber, what the notch part of the C-shaped band formed the collecting chamber leads leak.
In a preferred embodiment of the invention, the outer surface at the C-shaped band axial direction both ends is each provided with a lock ring face,
The annular restraint zone is a pair, and each annular restraint zone lock ring is on a lock ring face.
In a preferred embodiment of the invention, it is additionally provided with the inner surface of the C-shaped band by flexible sealing material
The manufactured C-shaped diaphragm seal with notch part so that the inner surface of the C-shaped diaphragm seal is with being pressed in a pair of flange seal ends
Collecting chamber, the C-shaped are formed between the outer ring surface of annular gasket on face and the bolt bearing inner face of the pair of flange
What the notch part of the notch part of band and the C-shaped diaphragm seal was mutually correspondingly formed the collecting chamber leads leak.
In a preferred embodiment of the invention, the axially width of the axial width of the C-shaped diaphragm seal and the C-shaped band
Degree is mutually adapted.
In a preferred embodiment of the invention, the lock ring face is crown for circular or circle, the annular restraint zone
Section is circular or rectangle.
In a preferred embodiment of the invention, fluid sealant is coated with the pair of flange outer diameter face of cylinder.
In a preferred embodiment of the invention, the gap between the bolt hole and bolt of the pair of flange utilizes stifled
Leak adhesive seals.
In a preferred embodiment of the invention, the C-shaped band is made up of metal tape.
As a result of technical scheme as above, the beneficial effects of the present invention are：
1st, the present invention can solve existing leakage-detectable constant-stress sealing gasket collection method and cannot be used for male female face and tenon/groove
The limitation and in-site installation of face flange sealing surface pattern require the shortcomings that high, cost is high.
2nd, the present invention can collect the leakage of various flange sealing surfaces, including male female face and tenon/groove flange sealing surface type
Formula.
As long as the 3rd, flange sealing structure, the present invention is applied to various ring-like pads；Existing in-service sealing need not be removed
The pad and flange bolt of energy or technical indicator still within national standard or professional standard prescribed limit, it is versatile.
4th, the present invention does not influence on the sealing property of in-service existing flange seal gasket.
5th, C-shaped band and annular fastening strip material of the invention are easy to obtain from the market, simple installation, and cost is low.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of prior art.
Fig. 2 is the vertical section structure schematic diagram of an embodiment of the present invention.
Fig. 3 is the cross section structure schematic diagram of an embodiment of the present invention.
Fig. 4 is the structural blast schematic diagram of an embodiment of the present invention.
Fig. 5 is the three-dimensional structure diagram of an embodiment of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, enter below
One step illustrates the present invention.
Referring to shown in Fig. 2 to Fig. 5, a kind of universal in-service online collecting mechanism of flange seal is including C-shaped band 100 and at least
One annular restraint zone 300.The present invention is applied to the operating mode of flange seal, is sealed when two flanges 10a, 10b cooperate, two
Fixed between flange 10a, 10b by bolt 30, seal face 11a, 11b in the middle part of two flanges 10a, 10b compress air ring
During piece 20, you can carry out online collect using the present invention and hunt leak.
C-shaped band 100 has a notch part 101, and the C-shaped band 100 in the present embodiment is made up of steel band, and easy to process, cost is low.
The inner surface of 100 liang of axial ends of C-shaped band forms inner sealing surface 111 respectively, inner sealing surface 111 at work be mutually butted one
Flange 10a, 10b outer diameter cylindrical face 12a, 12b are contacted and sealed.In order to further increase sealing effectiveness, a pair of flange outer diameter circles
Fluid sealant is coated with cylinder 12a, 12b.The outer surface of C-shaped band 100 at least forms a lock ring face 110, in order that obtaining C-shaped band
100 stress balances, improve the stability of sealing, and the outer surface at 100 axial both ends of C-shaped band is each provided with a lock ring face 110.
The effect of annular restraint zone 200 be lock ring on lock ring face 120, due to the lock ring face 120 in the present embodiment be one
Right, so the annular restraint zone 200 in the present embodiment is also a pair, annular restraint zone 200 is the restraint zone of prestressing force type.Annular
Restraint zone 200 cause C-shaped band 100 inner sealing surface 111 compress respectively be mutually butted a pair of flange outer diameter face of cylinder 12a,
12b, and then cause the inner surface of C-shaped band 100 and the annular gasket 20 that is pressed on a pair of flange seal end faces 11a, 11b
Collecting chamber a, the notch part 101 of C-shaped band 100 are formed between outer ring surface and a pair of flanges 10a, 10b bolt bearing inner face
Form collecting chamber a leads leak.
In order to further improve flange outer diameter face of cylinder 12a, 12b sealing, even if the flange outer diameter face of cylinder 12a, 12b
Due to get rusty or wear out-of-flatness be present in the case of could be used that the present invention, be additionally provided with the inner surface of C-shaped band 100 by
There is the C-shaped diaphragm seal 300 of notch part 301 so that the inner surface of C-shaped diaphragm seal 300 is with being pressed made of flexible sealing material
The tightly outer ring surface of the annular gasket 20 on a pair of flange seal end faces 11a, 11b and a pair of flanges 10a, 10b bolt branch
Hold and collecting chamber a is formed between inner face, the notch part 101 of C-shaped band 100 and the notch part 301 of C-shaped diaphragm seal 300 are mutually corresponding
Form collecting chamber a leads leak.And C-shaped diaphragm seal 300 has certain elastic force, prevent that bolt 30 from releasing or flange outer diameter is justified
Seal failure caused by cylinder 12a, 12b out-of-flatness.
In order that C-shaped diaphragm seal 300, the axial width and C of C-shaped diaphragm seal 300 can be compressed completely by obtaining inner sealing surface 111
The axial width of shape band 100 is mutually adapted.
The section in the lock ring face 110 in the present embodiment is crown for circular or circle, the section of annular restraint zone 200 to be circular or
Rectangle, prevent that C-shaped diaphragm seal 300 is cut off by shear stress made of flexible sealing material.
During present invention installation, the pre-coated of C-shaped diaphragm seal 300 is fixed on the flange outer diameter face of cylinder 12a, 12b；Then C-shaped
It is coated and fixed with 100 in the outer surface of C-shaped diaphragm seal 300 so that the notch part 301 of C-shaped diaphragm seal 300 lacks with C-shaped band 100
Oral area 101 is aligned；Then a pair of annular restraint zones 200 pass through from C-shaped band 100 and are wrapped in a pair of lock ring faces of C-shaped band 100
On 110, then a pair of the annular restraint zones 200 and inner sealing surface 111 of C-shaped band 100 is tight are tightened with special portable formula frock clamp
Hoop is on C-shaped diaphragm seal 300 so that C-shaped diaphragm seal 300 is formed with the flange outer diameter face of cylinder 12a, 12b and sealed so that C-shaped is close
The outer ring surface and one of the inner surface of mounting 300 and the annular gasket 20 being pressed on a pair of flange seal end faces 11a, 11b
To forming collecting chamber a, notch part 101 and the C-shaped diaphragm seal of C-shaped band 100 between flange 10a, 10b bolt bearing inner face
300 notch part 301 is mutually correspondingly formed collecting chamber a leak of leading, and leads leak and there was only unique one, leads leak and places biography
The on-line real time monitoring of various flange seal gasket source of leaks then can be achieved in sensor.
The present invention is applied to flange bolt hole or bolt corrosion is very close to each other and gas leaks out from bolt with bolt hole
Occasion；Sealing leakage glue sealing spiral shell will be used when the occasion that flange bolt hole or bolt have gap and have gas to leak, in-site installation
Gap 13 between keyhole or bolt.
In addition, the present invention has further the advantage that：
1st, the present invention can solve existing leakage-detectable constant-stress sealing gasket collection method and cannot be used for male female face and tenon/groove
The limitation and in-site installation of face flange sealing surface pattern require the shortcomings that high, cost is high.
2nd, the present invention can collect the leakage of various flange sealing surfaces, including male female face and tenon/groove flange sealing surface type
Formula.
As long as the 3rd, flange sealing structure, the present invention is applied to various ring-like pads；Existing in-service sealing need not be removed
The pad and flange bolt of energy or technical indicator still within national standard or professional standard prescribed limit, it is versatile.
4th, the present invention does not influence on the sealing property of in-service existing flange seal gasket.
5th, C-shaped band and annular fastening strip material of the invention are easy to obtain from the market, simple installation, and cost is low.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
- A kind of 1. universal in-service online collecting mechanism of flange seal, it is characterised in that including：C-shaped band with notch part, outside a pair of flanges that the inner surface of the axial end of C-shaped band two is formed and is mutually butted respectively The inner sealing surface of footpath Cylindrical Surfaces Contact sealing, the outer surface of the C-shaped band at least forms a lock ring face；At least one annular restraint zone, the annular restraint zone lock ring is on the lock ring face so that the inner sealing surface of the C-shaped band A pair of flange outer diameter faces of cylinder being mutually butted are compressed respectively, and then are caused the inner surface of the C-shaped band and be pressed in a pair Formed and collected between the outer ring surface of annular gasket on flange seal end face and the bolt bearing inner face of the pair of flange Chamber, what the notch part of the C-shaped band formed the collecting chamber leads leak.
- A kind of 2. universal in-service online collecting mechanism of flange seal as claimed in claim 1, it is characterised in that the C-shaped Outer surface with axial both ends is each provided with a lock ring face, and the annular restraint zone is a pair, and each annular restraint zone lock ring exists On one lock ring face.
- A kind of 3. universal in-service online collecting mechanism of flange seal as claimed in claim 1 or 2, it is characterised in that the C Be additionally provided with the inner surface of shape band has the C-shaped diaphragm seal of notch part made of flexible sealing material so that the C-shaped is close The outer ring surface and the pair of flange of the inner surface of mounting and the annular gasket being pressed on a pair of flange seal end faces Collecting chamber is formed between bolt bearing inner face, the notch part of the C-shaped band and the notch part of the C-shaped diaphragm seal are mutually corresponding Form the collecting chamber leads leak.
- A kind of 4. universal in-service online collecting mechanism of flange seal as claimed in claim 3, it is characterised in that the C-shaped The axial width of the axial width of diaphragm seal and the C-shaped band is mutually adapted.
- A kind of 5. universal in-service online collecting mechanism of flange seal as claimed in claim 3, it is characterised in that the lock ring Face is crown for circular or circle, and the section of the annular restraint zone is circular or rectangle.
- 6. a kind of universal in-service online collecting mechanism of flange seal as claimed in claim 1, it is characterised in that the pair of Fluid sealant is coated with the flange outer diameter face of cylinder.
- 7. a kind of universal in-service online collecting mechanism of flange seal as claimed in claim 1, it is characterised in that the pair of Gap between the bolt hole and bolt of flange is sealed using sealing leakage glue.
- A kind of 8. universal in-service online collecting mechanism of flange seal as claimed in claim 1, it is characterised in that the C-shaped Band is made up of metal tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687909.2A CN107401641B (en) | 2017-08-11 | 2017-08-11 | On-line collection mechanism for universal in-service flange seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687909.2A CN107401641B (en) | 2017-08-11 | 2017-08-11 | On-line collection mechanism for universal in-service flange seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107401641A true CN107401641A (en) | 2017-11-28 |
| CN107401641B CN107401641B (en) | 2023-08-18 |
Family
ID=60397509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710687909.2A Active CN107401641B (en) | 2017-08-11 | 2017-08-11 | On-line collection mechanism for universal in-service flange seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107401641B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010015092A1 (en) * | 1999-06-28 | 2001-08-23 | Inflow Products, Inc. | Leak testing device |
| US20040237632A1 (en) * | 2001-08-30 | 2004-12-02 | Rene Van Keeken | Pipe joint safety inspection device |
| US20070006929A1 (en) * | 2005-06-29 | 2007-01-11 | James Wolk | Accessible test fitting for a plumbing system |
| US20070113890A1 (en) * | 2005-11-18 | 2007-05-24 | Woods John M | Leak detector sleeve |
| CN201531594U (en) * | 2009-09-30 | 2010-07-21 | 马志刚 | Constant stress seal gasket capable of detecting leakage |
| US20120018014A1 (en) * | 2010-07-21 | 2012-01-26 | Leslie Fernandes | Joint Cover with Manifold for Duct Leak Detection System |
| US20140097611A1 (en) * | 2012-10-10 | 2014-04-10 | Gearench Division Of Orbix Corporation | Tool for Deflecting Spray from Flange Coupling |
| CN204043865U (en) * | 2014-08-14 | 2014-12-24 | 浙江纯雨不锈钢管业有限公司 | For carrying the leak detecting device of the stainless steel body junction of high-temp liquid |
| CN207213401U (en) * | 2017-08-11 | 2018-04-10 | 慧感(上海)物联网科技有限公司 | A kind of universal in-service online collecting mechanism of flange seal |
-
2017
- 2017-08-11 CN CN201710687909.2A patent/CN107401641B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010015092A1 (en) * | 1999-06-28 | 2001-08-23 | Inflow Products, Inc. | Leak testing device |
| US20040237632A1 (en) * | 2001-08-30 | 2004-12-02 | Rene Van Keeken | Pipe joint safety inspection device |
| US20070006929A1 (en) * | 2005-06-29 | 2007-01-11 | James Wolk | Accessible test fitting for a plumbing system |
| US20070113890A1 (en) * | 2005-11-18 | 2007-05-24 | Woods John M | Leak detector sleeve |
| CN201531594U (en) * | 2009-09-30 | 2010-07-21 | 马志刚 | Constant stress seal gasket capable of detecting leakage |
| US20120018014A1 (en) * | 2010-07-21 | 2012-01-26 | Leslie Fernandes | Joint Cover with Manifold for Duct Leak Detection System |
| US20140097611A1 (en) * | 2012-10-10 | 2014-04-10 | Gearench Division Of Orbix Corporation | Tool for Deflecting Spray from Flange Coupling |
| CN204043865U (en) * | 2014-08-14 | 2014-12-24 | 浙江纯雨不锈钢管业有限公司 | For carrying the leak detecting device of the stainless steel body junction of high-temp liquid |
| CN207213401U (en) * | 2017-08-11 | 2018-04-10 | 慧感(上海)物联网科技有限公司 | A kind of universal in-service online collecting mechanism of flange seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107401641B (en) | 2023-08-18 |
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