CN204025679U - A kind of gasket seal and combination seal pad - Google Patents
A kind of gasket seal and combination seal pad Download PDFInfo
- Publication number
- CN204025679U CN204025679U CN201420437494.5U CN201420437494U CN204025679U CN 204025679 U CN204025679 U CN 204025679U CN 201420437494 U CN201420437494 U CN 201420437494U CN 204025679 U CN204025679 U CN 204025679U
- Authority
- CN
- China
- Prior art keywords
- gasket seal
- layer
- annular matrix
- metal body
- gasket
- 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.)
- Active
Links
Abstract
A kind of gasket seal, be installed on the sealing surface position of two companion flanges, shim body comprise by annular matrix and be located at that the packing layer of groove of the outer surface of annular matrix forms be dish-shaped inclined-plane sealing surface, the enclosed construction of annular matrix for rotating in a circumferential direction and form by base unit edge, annular matrix is for to be formed or to be formed for being tightly connected by two-layer above metal body by single-layer metal body, and the sectional shape of the center hole of annular matrix is isosceles trapezoid; A combination seal pad, comprises above-mentioned gasket seal and is located at the middle barrier film assembly welding of gasket seal forming, the sectional shape of barrier film is isosceles trapezoid.The application's the structure that is dish-shaped inclined-plane sealing surface is except having the resilience of gasket material itself, also have and be reversed into the structure resilience that the structure of plain cushion will resile, and structure rebound elasticity is greater than material rebound elasticity, thereby obtain better sealability, also have simple in structure, load and unload easy, better dynamic sealing performance.
Description
Technical field
The application relates to the sealing technique that bearing device for petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry and other various chemical industry, air-conditioning, air cooling, electric power facility (such as boiler, pressurized container, heat exchanger, pressure piping, air cylinder etc.) opening is connected, and is specially adapted to a kind of gasket seal and combination seal pad in the diaphragm sealing structure of high temperature and high pressure condition.
Background technique
In the gasket seal that existing bearing device opening connects, annular plain cushion is be most widely used a kind of, and its structure species is also a lot, includes the structures such as rubber pad, asbestos packing, metal plain cushion, iron bag pad, wound gasket, ripple odontolith China ink composite pad.
In existing welding neckflange annular plain cushion sealing pair technology, as shown in Figure 1, each flange is generally comprised of the sealing surface 16 of bolt hole 12, neck 13, the end groove 14 docking with pressure-bearing shell, annular plain cushion 15 and the ring plane of flange plate 11, construction bolt nut fastener typical structure.Bolt is through the bolt hole 12 of upper and lower two flanges, bolt end tightens nut, make the sealing surface 16 of two flanges mutually close, compress annular gasket 15, make flange internal pressure p medium cannot from dotted arrow direction by annular gasket and and flange between sealing surface to flee flange outside.
The ubiquitous practical problem of such conventional construction is, when making pressure p, the temperature T of flange interior media raise or fluctuate, higher pressure produces the tensile force f shown in solid arrow at the two ends of flange, higher temperature is extended bolt expanded by heating, sealing system is lax, annular gasket 15 does not have enough resiliences to continue fitting tightly of maintenance and flange facing 16, and high-temperature high-pressure medium is fled flange outside, explosion caused pyrophoricity accident by sealing surface.As can be seen here, the sealing technique that bearing device opening connects becomes the key of whole equipment.
From technological layer analysis, the basic reason that flange interior media leaks is: after sealing system is lax, annular gasket 15 does not have enough resiliences to continue fitting tightly of maintenance and flange facing.Therefore, research and develop a kind of simple in structure, sealing reliability and performance is good, the efficiency of loading and unloading is high pad, in field of engineering technology, there is very far-reaching and great meaning.
Summary of the invention
The application's object is to avoid deficiency of the prior art and a kind of assembling quality and efficiency of loading and unloading of can improving is provided, and the inclined-plane gasket seal of simple in structure, sealing reliability and good seal performance.
The application's object is achieved through the following technical solutions:
providea kind of gasket seal, be installed on the sealing surface position of two companion flanges, comprise shim body, wherein: described shim body is for by annular matrix be arranged at the shim body that is dish-shaped inclined-plane sealing surface that the packing layer of groove of the outer surface of described annular matrix forms, the enclosed construction of described annular matrix for rotating in a circumferential direction and form by base unit edge, described annular matrix is for to be formed or to be formed for being tightly connected by two-layer above metal body by single-layer metal body, and the sectional shape of the center hole of described annular matrix is isosceles trapezoid.
Wherein: the shape of described dish-shaped inclined-plane sealing surface comprises conical inclined surface, convex inclined-plane and concave arc shape inclined-plane.
Wherein: being shaped as of described base unit is trapezoidal, any in rectangle and triangle.
Wherein: the groove of described annular matrix is any groove in rack-shaped groove, arc line shaped groove, rectangular recess and wave molding connected in star or the combination of appointing several grooves.
Wherein: the equal rounding setting of the upper end edge of described annular matrix and lower end edge.
Wherein: double layer of metal body adjacent between described two-layer above metal body connects by welded seal on its edge, one end, and its other end is along being hatch frame.
Wherein: the identical setting of thickness of each layer of metal body or not identical setting between described two-layer above metal body.
Wherein: described packing layer is any packing layer in graphite layer, rubber layer, plastic layer and adhesive-layer or the combination of appointing several packing layers.
also providea combination seal pad, comprises gasket seal and is arranged at the middle barrier film assembly welding of described gasket seal forming, described gasket seal is gasket seal described above, and the sectional shape of described barrier film is isosceles trapezoid.
The application's beneficial effect: can reaction impose on a kind of power of being adjacent to of flange facing after the sealing surface of the application's gasket seal is compacted, show as the raising of resilience on mechanical behavior, thereby obtain good sealability.After sealing system is lax, gasket seal has enough resiliences to continue fitting tightly of maintenance and flange facing.According to the application's principle of sealing technology, sealing pad can be used for the structures such as welded flange, welding neckflange, welding neck flange, full face flange, narrow face flange, inverse flange and cylindrical ends, conical end, flange, heat exchanger bobbin carriage, heat exchanger tube sheet, blank cap.Compared with prior art, the application's forced seal performance is better, also have simultaneously simple in structure, load and unload easy, be conducive to sealing, than other structures, be more suitable for large scale structure dynamic seal (packing) under operating mode in High Temperature High Pressure and fluctuation thereof.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the application, but embodiment in accompanying drawing does not form any restriction to the application, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation that the annular plain cushion in existing conventional art is installed on companion flange sealing surface.
Fig. 2 is the integrated symmetric cross-sectional view of a kind of gasket seal in the application's embodiment 1.
Fig. 3 is the partial structurtes schematic diagram that a kind of gasket seal in the application's embodiment 1 starts to be compressed by flange facing.
Fig. 4 is the partial structurtes schematic diagram after a kind of gasket seal in the application's embodiment 1 is flattened by flange facing.
Fig. 5 is the one partial structurtes schematic diagram of a kind of gasket seal in the application's embodiment 1.
Fig. 6 is the one partial structurtes schematic diagram of a kind of gasket seal in the application's embodiment 1.
Fig. 7 is the one partial structurtes schematic diagram of a kind of gasket seal in the application's embodiment 1.
Fig. 8 is the one partial structurtes schematic diagram of a kind of gasket seal in the application's embodiment 1.
Fig. 9 is the partial structurtes schematic diagram of a kind of combination seal pad in the application's embodiment 2.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, include:
11---flange plate, 12---bolt hole, 13---neck, 14---end groove, 15---annular plain cushion, the 16---sealing surfaces of ring plane;
2---shim body, 21---annular matrix, 211---metal body, 22---groove,
3---packing layer,
4---seal weld,
5---dish-shaped inclined-plane sealing surface,
6---barrier film,
The pressure of medium in P---bearing device, F---pressure medium acts on the power of flange end, Q---flange facing imposes on the power of gasket seal, the M---elastic torque that gasket seal resiles, the knuckle radius of r---rounding off.
Embodiment
With the following Examples the application is described in further detail.It should be noted that the double dot dash line in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 represents flange facing.
embodiment 1
The embodiment of a kind of gasket seal of the application, be installed on the sealing surface position of two companion flanges, the signal of gasket seal integrated symmetric cross-section structure is shown in Figure 2, comprise shim body 2, the application's improvements are, described shim body 2 is for by annular matrix 21 be arranged at the shim body 2 that is dish-shaped inclined-plane sealing surface 5 that the packing layer 3 of groove 22 of the outer surface of described annular matrix 21 forms, the enclosed construction of described annular matrix 21 for rotating in a circumferential direction and form by base unit edge, described annular matrix 21 is for to be formed or to be formed for being tightly connected by two-layer above metal body 211 by single-layer metal body 211, the sectional shape of the center hole of described annular matrix 21 is isosceles trapezoid.
The left side of Fig. 2 center line is that flange facing rigidly connects the schematic diagram while touching gasket seal, and its partial structurtes are with reference to figure 3, and the right side of Fig. 2 center line is that flange facing press seal pad becomes the schematic diagram after plain cushion, and its partial structurtes are with reference to figure 4.As shown in Figure 4 and Figure 5, after flange facing contacts with gasket seal, further cooperation will impose on power of gasket seal to Q, contrary and the different axis of these two pressure directions, in pad, transfer warping force to, make gasket seal produce torsional deflection, form torsional interaction M, until gasket seal and flange facing fit tightly.After sealing system is lax, the anti-twisted distortion that gasket seal has, the trend resiling, recover the original structure that is dish-shaped inclined-plane, thereby show higher rebound elasticity, continues fitting tightly of maintenance and flange facing, forms all the time effectively sealing.Annular gasket 15 in welding neckflange sealing pair shown in Fig. 1 in existing conventional art is the sealing surfaces that are plane.This traditional planar sealing pad is after sealing system is lax, the resilience that only has gasket material itself, finite elastic, and the application's the structure that is dish-shaped inclined-plane sealing surface 5 is except having the resilience of gasket material itself, also have and be reversed into the structure resilience that the structure of plain cushion will resile, and structure rebound elasticity is greater than material rebound elasticity, thereby obtain better sealability.
Compared with prior art, that the application's gasket seal has is simple in structure, it is easy to load and unload, and than other structures, is more suitable for the dynamic seal (packing) of large scale structure under High Temperature High Pressure and fluctuation operating mode thereof.
Concrete: the shape of described dish-shaped inclined-plane sealing surface 5 comprises conical inclined surface, convex inclined-plane and concave arc shape inclined-plane.As long as the sealing surface of gasket seal is dish-shaped inclined-plane, its body structure shape is diversified, and key is these sealing surface energy pressurized torsional deflections.Under the inclination angle on same dish-shaped inclined-plane, gasket seal is higher, its torsional deflection after being driven plain is just larger, and then the power that is adjacent to that reacts on flange facing is also larger, but also limited, the stress that gasket seal is turned round generation can not exceed the permissible stress of gasket material, in order to avoid produce plastic deformation after sealing surrender, and cannot resilience.
Concrete: being shaped as of described base unit is trapezoidal, any in rectangle and triangle.Preferably, right-angled trapezium, the square in rectangle and the right-angled triangle in triangle in trapezoidal, its structure is more conducive to the resilience of gasket seal, is greater than the rebound elasticity of material itself by the rebound elasticity of structure.
Concrete: the groove 22 of described annular matrix 21 is any groove 22 in rack-shaped groove 22, arc line shaped groove 22 and wave molding connected in star 22 or the combination of appointing several grooves 22.Shown in figure 7, the outer surface of annular matrix 21 is provided with rectangular recess 22, on the inside and outside inclined-plane of annular matrix 21, smears last layer filler, concrete composition depending on filler, also need to compress filler, make in its groove 22 that fills up annular matrix 21 surfaces completely, and eliminate the space of the inside as far as possible.Shown in figure 8, the outer surface of annular matrix 21 is provided with circular arc line groove 22, the interior filling packing layer 3 of circular arc line groove 22, on sealing surface, be distributed with the lines line of a circle circle, the popular waterline that is called in machining sealing surface, on these lines, smear filler, can increase both faying surfaces, improve degree of being adjacent to.
Concrete: with reference to the fillet radius r shown in figure 2, in upper end edge and the equal rounding setting of lower end edge of described annular matrix 21.The structure of rounding is easily slided this gasket seal in the process being compressed by flange facing, is conducive to distortion and resilience, further promotes the rebound elasticity of its structure itself.
Concrete: 211 adjacent double layer of metal bodies 211 of described two-layer above metal body are in its one end along connecting by welded seal, and its other end is along being hatch frame.Referring to the annular matrix 21 described in Fig. 5, it is comprised of double layer of metal body 211, seal weld 4 by outer rim between double layer of metal body 211 is connected, inner edge between double layer of metal body 211 does not have seal weld 4, but the structure of opening, seal weld 4 is answered through welding, and it is qualified through infiltration, to detect, and does not have pore and crackle etc. to affect the defect of sealing; Or if the seal weld by inner edge between double layer of metal body 211 4 is connected, the outer rim between double layer of metal body 211 is just without seal weld 4 again, and should be the structure of opening.Referring to the annular matrix 21 described in Fig. 6, it is comprised of three-layer metal body 211, seal weld 4 by outer rim between first layer and the second layer is connected, and inner edge between first layer and the second layer does not have seal weld 4, but the structure of opening, between the second layer and the 3rd layer, the seal weld by inner edge is connected, and outer rim between the second layer and the 3rd layer does not have seal weld, but the structure of opening.The identical setting of thickness of 211 each layer of metal bodys 211 of above-mentioned two-layer above metal body or not identical setting.
Concrete: described packing layer 3 is any packing layer 3 in graphite layer, rubber layer, plastic layer and adhesive-layer or the combination of appointing several packing layers 3.
Gasket seal in the application can be by the further processing and obtaining of traditional annular plain cushion, for the gasket seal of minor diameter, can, by specialized mould punch process, for larger-diameter gasket seal, can be formed by special tooling rolling finishing.But, in processing, firmly want balanced, note controlled working attenuate amount, also to eliminate forming residual stress by heat treatment if desired, or recover the mechanical property of body material.
The application's gasket seal is applied to flange the inside, wherein a side and medium contact, what solve is the dynamic seal (packing) problem of large scale structure under High Temperature High Pressure and fluctuation operating mode thereof, be different from the flange plate that is only used in flange outer surface, contact with atmosphere, need to pierce in bolt, by nut, it is pressed on flange plate, remove to solve the sealing relaxation problem after bolt elongate.
embodiment 2
The embodiment of a kind of combination seal pad of the application, shown in figure 9, comprise gasket seal and be arranged at middle barrier film 6 assembly weldings of described gasket seal and form, described gasket seal is the gasket seal in above-described embodiment 1, the sectional shape of described barrier film 6 is isosceles trapezoid, with the sectional shape of annular matrix 21 be the welding that matches of isosceles trapezoid center hole.Gasket seal with barrier film 6 is applicable to the dynamic seal (packing) of large scale structure under High Temperature High Pressure and fluctuation operating mode thereof more.The technological scheme of gasket seal is identical with embodiment 1, and unaccounted feature, adopts the explanation in embodiment 1 in the present embodiment, at this, no longer repeats.
After the sealing surface that is the combination of dish-shaped inclined-plane sealing surface 5 and central plane of the application's combination seal pad is compacted, can reaction impose on a kind of power of being adjacent to of flange facing, on mechanical behavior, show as the raising of resilience, thereby obtain good sealability.After sealing system is lax, gasket seal has enough resiliences to continue fitting tightly of maintenance and flange facing.According to the application's principle of sealing technology.Compared with prior art, the application's forced seal performance is better, also have simultaneously simple in structure, load and unload easy, be conducive to sealing, than other structures, be more suitable for large scale structure dynamic seal (packing) with barrier film 6 sealings under operating mode in High Temperature High Pressure and fluctuation thereof.
Finally should be noted that; above embodiment is only in order to illustrate the application's technological scheme; but not restriction to the application's protection domain; although the application has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the application's technological scheme, and not depart from essence and the scope of present techniques scheme.
Claims (9)
1. a gasket seal, be installed on the sealing surface position of two companion flanges, comprise shim body, it is characterized in that: described shim body is for by annular matrix be arranged at the shim body that is dish-shaped inclined-plane sealing surface that the packing layer of groove of the outer surface of described annular matrix forms, the enclosed construction of described annular matrix for rotating in a circumferential direction and form by base unit edge, described annular matrix is for to be formed or to be formed for being tightly connected by two-layer above metal body by single-layer metal body, and the sectional shape of the center hole of described annular matrix is isosceles trapezoid.
2. a kind of gasket seal according to claim 1, is characterized in that: the shape of described dish-shaped inclined-plane sealing surface comprises conical inclined surface, convex inclined-plane and concave arc shape inclined-plane.
3. a kind of gasket seal according to claim 1, is characterized in that: being shaped as of described base unit is trapezoidal, any in rectangle and triangle.
4. a kind of gasket seal according to claim 1, is characterized in that: the groove of described annular matrix is any groove in rack-shaped groove, arc line shaped groove, rectangular recess and wave molding connected in star or the combination of appointing several grooves.
5. a kind of gasket seal according to claim 1, is characterized in that: the equal rounding setting of the upper end edge of described annular matrix and lower end edge.
6. a kind of gasket seal according to claim 1, is characterized in that: double layer of metal body adjacent between described two-layer above metal body connects by welded seal on its edge, one end, and its other end is along being hatch frame.
7. a kind of gasket seal according to claim 1, is characterized in that: the identical setting of thickness of each layer of metal body or not identical setting between described two-layer above metal body.
8. a kind of gasket seal according to claim 1, is characterized in that: described packing layer is any packing layer in graphite layer, rubber layer, plastic layer and adhesive-layer or the combination of appointing several packing layers.
9. a combination seal pad, it is characterized in that: comprise gasket seal and be arranged at the middle barrier film assembly welding of described gasket seal forming, described gasket seal is the gasket seal described in any one in claim 1 to 8, and the sectional shape of described barrier film is isosceles trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437494.5U CN204025679U (en) | 2014-08-05 | 2014-08-05 | A kind of gasket seal and combination seal pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437494.5U CN204025679U (en) | 2014-08-05 | 2014-08-05 | A kind of gasket seal and combination seal pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025679U true CN204025679U (en) | 2014-12-17 |
Family
ID=52065547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420437494.5U Active CN204025679U (en) | 2014-08-05 | 2014-08-05 | A kind of gasket seal and combination seal pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204025679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089017A (en) * | 2014-08-05 | 2014-10-08 | 茂名重力石化机械制造有限公司 | Sealing gasket and combined sealing gasket |
-
2014
- 2014-08-05 CN CN201420437494.5U patent/CN204025679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089017A (en) * | 2014-08-05 | 2014-10-08 | 茂名重力石化机械制造有限公司 | Sealing gasket and combined sealing gasket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104089119A (en) | Flange assembly applied to high temperature high pressure and fluctuation work condition | |
| CN104089017A (en) | Sealing gasket and combined sealing gasket | |
| JP5599787B2 (en) | Comb double-sided coated gasket for sealing removable flange joints | |
| CN204664681U (en) | A kind of high-temperature flange pad profile of tooth contact linkage structure | |
| JPH09229197A (en) | Seal material | |
| CN204420391U (en) | A kind of flange sealing structure based on wave tooth composite gasket | |
| CN204025983U (en) | A kind of flange assembly being applied to High Temperature High Pressure and fluctuation operating mode thereof | |
| CN101842621A (en) | Pad | |
| CN104089120A (en) | Flange | |
| CN204025679U (en) | A kind of gasket seal and combination seal pad | |
| CN103807440A (en) | Self-tightening type sealing gasket for sealing asymmetric structure | |
| KR20160018681A (en) | Static gasket and method of construction thereof | |
| CN203743426U (en) | Self-tightening sealing gasket for asymmetric structure sealing | |
| CN204025982U (en) | A kind of flange | |
| CN202302432U (en) | Axial double-channel sealing structure for thin-wall flange flat groove for use under complex working condition | |
| CN204647625U (en) | A kind of exhaust pipe seal gasket | |
| CN202582346U (en) | Connection structure for tube plates and heat exchange tube of double-tube-plate heat exchanger | |
| CN206221654U (en) | A kind of elastic metallic rectangular seal device | |
| CN102654086A (en) | Sealing cushion for venting system of engine | |
| CN201875131U (en) | Self-tightening metal gasket | |
| CN110185798A (en) | A kind of self-sealed alloy double bellow seal Composition spacer | |
| CN214662908U (en) | Temporary plugging device for universal medium pipeline welding flange | |
| CN204627786U (en) | A kind of gasoline engine exhaust manifold gasket | |
| JP5202888B2 (en) | Method of forming flange joint with tube portion and flange joint with tube portion | |
| CN203258139U (en) | Middle flange metal seal device for middle-high pressure valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 525024 Guangdong City, Maoming Province Ring West Road, No. 91 Patentee after: Maoming gravity Petrochemical Equipment Co Ltd Address before: 525024 Maoming City, Guangdong Province West Road, Maoming City, the gravity of the Petrochemical Machinery Manufacturing Co., Ltd., Patentee before: The Challenge Petrochemical Machinery Corporation |