CN202867836U - Spring composite sealing gasket - Google Patents
Spring composite sealing gasket Download PDFInfo
- Publication number
- CN202867836U CN202867836U CN201220496054.8U CN201220496054U CN202867836U CN 202867836 U CN202867836 U CN 202867836U CN 201220496054 U CN201220496054 U CN 201220496054U CN 202867836 U CN202867836 U CN 202867836U
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- spring
- cylindrically coiled
- coiled spring
- outside
- composite sealing
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Abstract
The utility model discloses a spring composite sealing gasket, and relates to a sealing gasket and in particular to a sealing component used for process equipment of a pipeline, a pressure vessel, utility-type unit and the like. A framework of the spring composite sealing gasket is composed of an inner side cylindrical helical spring (5), an outer side cylindrical helical spring (3) and a limiting ring (4) arranged between the inner side cylindrical helical spring and the outer side cylindrical helical spring. The inner side cylindrical helical spring (5) and the outer side cylindrical helical spring (3) are respectively arranged in an inner groove and an outer groove of the limiting ring (4), and the outer side cylindrical helical spring (3), the inner side cylindrical helical spring (5) and the limiting ring (4) are combined into a whole. The spring composite sealing gasket is good in rebound resilience and sealing performance, not prone to crushing, small in needed pretightening force, long in service life, and not sensitive to defaults on surfaces of flange sealing and free from destroying a flange working face. The spring composite sealing gasket has good performance of corrosion-resistant, high temperature-resistant, and low temperature-resistant.
Description
Technical field
The utility model relates to a kind of gasket seal, relates in particular to a kind of seal element that uses at Process Equipments such as pipeline, pressurized container, large-scale units.
Background technique
Gasket seal is the topmost static seal form in the detachable place such as pressurized container, manufacturing equipment, power machine and connecting tube in the process industrial device.The sealing of fluid is by the mutual close contact between flange and pad, relies on the elasto plastic deformation of pad, reduces or stops up leakage way, realizes with the increase flow resistance.Gasket seal adopts the bolt flange linkage structure usually, and its Intermediate gasket is the key element that affects the bolted-flange sealing switching performance.Develop rapidly along with modern science and technology, process industrial is equipped increasingly high parameter, maximization, new technique continues to bring out, the rise of particularly petrochemical industry, atomic energy industry, large-scale power station, Process Equipment is towards high temperature, high pressure, high vacuum, deep cooling and large scale development, and is more and more strict to the requirement of gasket seal.The sealing material that some are traditional and structure can not satisfy system and the increasingly strict tightness requirement of equipment.
At present composite sealing pad commonly used mainly contains spiral wound gasket, metal jacketed gasket, metal and rushes tooth plate Expanded graphite Composition spacer, Expanded graphite metal wave tooth Composition spacer.
Spiral wound gasket is by metal tape and the nonmetal a kind of semi-metallic gasket that forms with the compound coiling of spiral.Strengthen resistance to compression by W type or V-type eyelet support, W type or V-type metal twine circle for being welded and fixed.Its shortcoming is easily to fall apart under impact, pressure vibration, and particularly the manufacturing of major diameter wound gasket is difficult, poor safety performance.
Metal jacketed gasket is take nonmetallic material as core, is cut into needed shape, a kind of Composition spacer that outside clad metal thin plate forms.Its shortcoming is that required pretension specific pressure is high, the sealing surface poor performance.
It is by the metal tooth plate that rushes tooth or punch metal central layer and the compound a kind of gasket seal that is pressed into of Expanded graphite particle that metal rushes tooth plate Expanded graphite Composition spacer.Its shortcoming is that its resilience is poor with regard to the individual layer Composition spacer, is difficult to the operating mode of adaptive temperature pressure surge.
Expanded graphite metal wave tooth Composition spacer is a kind of Composition spacer that is composited by ripple dentation metal frame and Expanded graphite.Its shortcoming is that ripple dentation metal frame needs turning to shape, and is subjected to the limitation of turning machining accuracy, and local thickness's attenuate easily occurs; The crown of ripple tooth metal frame is easily hindered flanged surface; Easy cracking under high-temperature condition; Because the limitation of process equipment, processing major diameter pad is difficulty, and cost of production is high.
Both at home and abroad doing a large amount of work aspect the theory of metallic shim, Composition spacer and the experimental research, sealing material and the element of exploitation can be used under the general working condition, but when operating conditions is relatively harsher, as withstand shocks simultaneously at high temperature, high pressure, under the operating mode of alternate load and thermal cycle, seal element commonly used is because material degradation and structural relaxation usually cause the inefficacy that is tightly connected.This certainly will cause equipment or unit by forced-stopping machine, brings huge economic loss, even causes equipment and human injury.
The model utility content
Make short deficiency of resilience and poor sealing performance under the operating mode condition, working life in order to overcome the conventional seals pad at High Temperature High Pressure, low temperature and to have vibration, impact and thermal cycle, it is a kind of high temperature resistant that the utility model provides, anticorrosive, needed pretightening force is less, good seal performance, rebound elasticity are high and be difficult for conquassation, the spring composite sealing pad of long service life.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.
Inboard cylindrically coiled spring 5 and outside cylindrically coiled spring 3 are separately positioned in the inside and outside groove of limited ring 4, adopt the spot welding mode that outside cylindrically coiled spring 3, inboard cylindrically coiled spring 5 are connected into a matrix with limited ring 4.Adopt pressing and wrapping technique metal bed course 2 to be coated on the outside of the matrix that is connected into by outside cylindrically coiled spring 3, inboard cylindrically coiled spring 5 and limited ring 4.When clad 1 is metal, can adopt pressing and wrapping technique to make between itself and the metal bed course 2, for guaranteeing connection reliability, also can increase the supplementary meanss such as soldering, spot welding; When clad 1 is nonmetal, can adopt pressing and wrapping technique to make between itself and the metal bed course 2, interlayer can be coated with sealer, to guarantee two interlayers bonding firmly.
Pressing and wrapping, sealer are bonding, spot welding, soldering are Placements commonly used during Sealing is produced.Wherein utilize the groove of limited ring 4, outside cylindrically coiled spring 3, inboard cylindrically coiled spring 5 are snapped in the groove of limited ring 4, adopting the spot welding mode that the three is connected into a matrix is a kind of new Placement.
This model utility is that the Placement of this structure and these parts has been brought outstanding advantage to the utility model together.Utilize the groove of limited ring 4, outside cylindrically coiled spring 3, inboard cylindrically coiled spring 5 are snapped in the groove of limited ring 4, adopting the spot welding mode that the three is connected into a matrix is a kind of new Placement, so that spring under the double action of limited ring 4 and metal bed course 2 resiliently deformable occurs, can more effectively increase the elastic compensating effect of Sealing.
Interior outside cylindrically coiled spring provides excellent resilience for whole seal element, connects the separation of sealing surface with bolt flange under the compensation work condition.Limited ring is cylindrically coiled spring location, the interior outside on the one hand, can prevent on the other hand whole pad conquassation.For convenient processing such as friable materials such as graphite, but at skeleton outside clad metal bed course.The outside sealing layer that coats of metal bed course is to stop the leakage of fluid, with the sealing that realizes connecting.
Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.Described cylindrically coiled spring diameter d is 0.2 ~ 0.8mm.
Working principle of the present utility model is: this Composition spacer is take interior outside cylindrically coiled spring, limited ring as metal frame, outside cylindrically coiled spring provides excellent resilience for whole seal element in utilizing, and connects the separation of sealing surface with bolt flange under the compensation work condition; Limited ring is cylindrically coiled spring location, the interior outside on the one hand, can prevent on the other hand whole pad conquassation; The leakage that the outer clad of metal bed course can stop fluid realizes the sealing that connects.In order to satisfy different working conditions and seal request, can adopt material diameter, central diameter, the pitch of different cylindrically coiled springs, the limited ring size, coating thickness, required spring metal is made in the combination of metal gasket layer thickness and material
---Nonmetal composite sealing pad.
Described cylindrically coiled spring central diameter D is 2 ~ 4mm.
Described cylindrically coiled spring pitch t is 0.15 ~ 1mm.
This composite sealing pad has utilized good rebound characteristics behind the cylindrically coiled spring pressurized, can reduce or the impact of partial offset pressure, temperature variation and mechanical vibration, make this Composition spacer under the effects such as high temperature, high pressure, low temperature, repeat load, still have excellent sealability.Limited ring is cylindrically coiled spring location, the interior outside on the one hand, can prevent on the other hand whole pad conquassation.Because limited ring can prevent the excess compression of installation process Intermediate gasket, makes installation process convenient.Can adopt the combination of different cylindrically coiled springs and limited ring size, metal gasket layer thickness and coating layer material and thickness to make required spring composite sealing pad, to satisfy be tightly connected different working conditions and tightness requirement.
Described metal bed course 2 thickness are 0.4 ~ 0.6mm.
Described clad 1 thickness is 0.2 ~ 0.8mm.
The thickness of described limited ring 4 is 1.4 ~ 2.2mm.
The width of described limited ring 4 can design by the width of sealing surface, and described limited ring 4 is the arc surface that is complementary with inside and outside cylindrically coiled spring with the helical spring surface of contact of inside and outside cylinder.Described clad 1 adopts low carbon steel, stainless steel, titanium, silver, nickel, monel metal, inconel, Expanded graphite, non-asbestos fiber composite material, teflon.
Beneficial effect:
It is good that this Composition spacer has a resilience, and high-and low-temperature resistance is anticorrosive, be difficult for conquassation, needed pretightening force is less, long service life, seal the series of advantages such as reliable, can implementation procedure be equipped in High Temperature High Pressure and have effective sealing under vibration, impact and the thermal cycle effect.
Outside cylindrically coiled spring, limited ring and metal bed course were as metal frame in composite sealing pad adopted in the utility model, clad is as the composite structure of sealing surface, this pad rebound elasticity is excellent, good seal performance, be difficult for conquassation, needed pretightening force is less, long service life, not too responsive and do not damage the flange working surface to the flange seal surface imperfection, have good anti-corrosion, high temperature resistant, resistance to low temperature.
Description of drawings
Fig. 1 is the structural representation of spring composite sealing pad.
Fig. 2 is the annexation figure of bolt, flange, spring composite sealing pad.
Fig. 3 is the sequential schematic that tightens of bolt.
1-clad; 2-metal bed course; 3-outside cylindrically coiled spring; 4-limited ring; 5-inboard cylindrically coiled spring; 6-upper flange; 7-stud; 8-nut; 9-ordinary elasticity packing ring; 10-spring composite sealing pad; The 11-lower flange.
Embodiment
Be described further for the utility model below in conjunction with accompanying drawing.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.This Composition spacer is common spring steel with the cylindrically coiled spring material, material diameter
dFor:
d=0.2mm, central diameter
DFor:
D=2mm, pitch
tFor:
t=0.2mm; The metal gasket layer thickness is: 0.6mm; Limited ring thickness
HFor:
H=1.4mm, width
BFor:
B=10mm; Coating thickness is: 0.3mm; Metal bed course and limited ring material are Ordinary Steel; Coating layer material is silver.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.This Composition spacer is common spring steel with the cylindrically coiled spring material, material diameter
dFor:
d=0.3mm, central diameter
DFor:
D=2.5mm, pitch
tFor:
t=0.4mm; The metal gasket layer thickness is: 0.6mm; Limited ring thickness
HFor:
H=1.8mm, width
BFor:
B=12mm; Coating thickness is: 0.3mm; Metal bed course and limited ring material are Ordinary Steel; Coating layer material is nickel.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.This Composition spacer is common spring steel with the cylindrically coiled spring material, material diameter
dFor:
d=0.4mm, central diameter
DFor:
D=3mm, pitch
tFor:
t=0.6mm; The metal gasket layer thickness is: 0.6mm; Limited ring thickness
HFor:
H=2mm, width
BFor:
B=13mm; Coating thickness is: 0.3mm; Metal bed course and limited ring material are Ordinary Steel; Coating layer material is titanium.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.This Composition spacer is common spring steel with the cylindrically coiled spring material, material diameter
dFor:
d=0.5mm, central diameter
DFor:
D=3mm, pitch
tFor:
t=0.7mm; The metal gasket layer thickness is: 0.6mm; Limited ring thickness
HFor:
H=2mm, width
BFor:
B=12mm; Coating thickness is: 0.3mm; Metal bed course and limited ring material are Ordinary Steel; Coating layer material is monel metal.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.This Composition spacer is common spring steel with the cylindrically coiled spring material, material diameter
dFor:
d=0.3mm, central diameter
DFor:
D=3mm, pitch
tFor:
t=0.4mm; The metal gasket layer thickness is: 0.5mm; Limited ring thickness
HFor:
H=2.2mm, width
BFor:
B=12.5mm; Coating thickness is: 0.5mm; Metal bed course and limited ring material are Ordinary Steel; Coating layer material is Expanded graphite.
The spring composite sealing pad that provides of the present utility model mainly by skeleton, around the described skeleton metal bed course 2 of arranged outside, and around described metal bed course 2, be outside equipped with clad 1 and form; The skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and the limited ring 4 between the cylindrically coiled spring of the described interior outside.Described inboard cylindrically coiled spring 5, outside cylindrically coiled spring 3 and limited ring 4 are coated by layer of metal bed course 2.This Composition spacer is common spring steel with the cylindrically coiled spring material, material diameter
dFor:
d=0.4mm, central diameter
DFor:
D=2.5mm, pitch
tFor:
t=0.5mm; The metal gasket layer thickness is: 0.5mm; Limited ring thickness
HFor:
H=2mm, width
BFor:
B=14mm; Coating thickness is: 0.6mm; Metal bed course and limited ring material are Ordinary Steel; Coating layer material is the non-asbestos fiber composite material.
Outside cylindrically coiled spring, limited ring and metal bed course were as metal frame in composite sealing pad adopted in the utility model, clad is as the composite structure of sealing surface, this pad rebound elasticity is excellent, good seal performance, be difficult for conquassation, needed pretightening force is less, long service life, not too responsive and do not damage the flange working surface to the flange seal surface imperfection, have good anti-corrosion, high temperature resistant, resistance to low temperature.
This composite sealing pad has utilized good rebound characteristics behind the cylindrically coiled spring pressurized, can reduce or the impact of partial offset pressure, temperature variation and mechanical vibration, make this Composition spacer under the effects such as high temperature, high pressure, low temperature, repeat load, still have excellent sealability.Limited ring is cylindrically coiled spring location, the interior outside on the one hand, can prevent on the other hand whole pad conquassation.Because limited ring can prevent the excess compression of installation process Intermediate gasket, makes installation process convenient.Can adopt the combination of different cylindrically coiled springs and limited ring size, metal gasket layer thickness and coating layer material and thickness to make required spring composite sealing pad, to satisfy be tightly connected different working conditions and tightness requirement.
Claims (7)
1. spring composite sealing pad, described spring composite sealing pad mainly by skeleton, around the described skeleton metal bed course (2) of arranged outside, and around described metal bed course (2), be outside equipped with clad (1) composition, it is characterized in that: the skeleton of described spring composite sealing pad is made of inboard cylindrically coiled spring (5), outside cylindrically coiled spring (3) and the limited ring (4) between the cylindrically coiled spring of the described interior outside;
Inboard cylindrically coiled spring (5) and outside cylindrically coiled spring (3) are separately positioned in the inside and outside groove of limited ring (4), and outside cylindrically coiled spring (3), inboard cylindrically coiled spring (5) link into an integrated entity with limited ring (4).
2. a kind of spring composite sealing pad according to claim 1, it is characterized in that: described inboard cylindrically coiled spring (5), outside cylindrically coiled spring (3) and limited ring (4) are coated by layer of metal bed course (2).
3. a kind of spring composite sealing pad according to claim 1, it is characterized in that: described outside cylindrically coiled spring (3), inboard cylindrically coiled spring (5) diameter d are 0.2 ~ 0.8mm; Described outside cylindrically coiled spring (3), inboard cylindrically coiled spring (5) central diameter D are 2 ~ 4mm; Described outside cylindrically coiled spring (3), inboard cylindrically coiled spring (5) pitch t are 0.15 ~ 1mm.
4. a kind of spring composite sealing pad according to claim 1, it is characterized in that: described metal bed course (2) thickness is 0.4 ~ 0.6mm.
5. a kind of spring composite sealing pad according to claim 1, it is characterized in that: described clad (1) thickness is 0.2 ~ 0.8mm.
6. a kind of spring composite sealing pad according to claim 1, it is characterized in that: described limited ring (4) thickness is 1.4 ~ 2.2mm.
7. a kind of spring composite sealing pad according to claim 1 is characterized in that: described limited ring (4) and the helical spring surface of contact of inside and outside cylinder are for being complementary with inboard, outside cylindrically coiled spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220496054.8U CN202867836U (en) | 2012-09-26 | 2012-09-26 | Spring composite sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220496054.8U CN202867836U (en) | 2012-09-26 | 2012-09-26 | Spring composite sealing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867836U true CN202867836U (en) | 2013-04-10 |
Family
ID=48034558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220496054.8U Expired - Fee Related CN202867836U (en) | 2012-09-26 | 2012-09-26 | Spring composite sealing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867836U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596691A (en) * | 2014-11-24 | 2015-05-06 | 宝鸡石油机械有限责任公司 | Method for testing pre-tightening force of underwater metal sealing gasket ring |
| CN105351416A (en) * | 2015-10-30 | 2016-02-24 | 无锡市东赫金属制品有限公司 | Composite spring |
| CN103994225B (en) * | 2014-05-26 | 2016-03-09 | 江苏双盈纺织科技有限公司 | A kind of novel sealing strip |
| CN110345250A (en) * | 2019-05-17 | 2019-10-18 | 慈溪埃弗龙密封件有限公司 | A kind of high-temperature and high-presure resistent metallic cover flat shim and preparation method thereof |
| CN111059381A (en) * | 2019-12-18 | 2020-04-24 | 无锡圣格尔新材料科技有限公司 | Superfine PTFE (polytetrafluoroethylene) brown fiber felt for sealing and lubricating |
-
2012
- 2012-09-26 CN CN201220496054.8U patent/CN202867836U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994225B (en) * | 2014-05-26 | 2016-03-09 | 江苏双盈纺织科技有限公司 | A kind of novel sealing strip |
| CN104596691A (en) * | 2014-11-24 | 2015-05-06 | 宝鸡石油机械有限责任公司 | Method for testing pre-tightening force of underwater metal sealing gasket ring |
| CN104596691B (en) * | 2014-11-24 | 2017-01-18 | 宝鸡石油机械有限责任公司 | Method for testing pre-tightening force of underwater metal sealing gasket ring |
| CN105351416A (en) * | 2015-10-30 | 2016-02-24 | 无锡市东赫金属制品有限公司 | Composite spring |
| CN110345250A (en) * | 2019-05-17 | 2019-10-18 | 慈溪埃弗龙密封件有限公司 | A kind of high-temperature and high-presure resistent metallic cover flat shim and preparation method thereof |
| CN111059381A (en) * | 2019-12-18 | 2020-04-24 | 无锡圣格尔新材料科技有限公司 | Superfine PTFE (polytetrafluoroethylene) brown fiber felt for sealing and lubricating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20210926 |