CN204025982U - A kind of flange - Google Patents
A kind of flange Download PDFInfo
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- CN204025982U CN204025982U CN201420437594.8U CN201420437594U CN204025982U CN 204025982 U CN204025982 U CN 204025982U CN 201420437594 U CN201420437594 U CN 201420437594U CN 204025982 U CN204025982 U CN 204025982U
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Abstract
A kind of flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between primary sealing area and secondary sealing area, first flange, gasket seal and the second flange fit tightly under the effect of fastening piece, the application adopts the unique texture of four kinds of flanges, make the pairing structure of its sealing surface can be applied to a kind of torsion of traditional pad, the anti-twisted active force of pad then shows as the raising of resilience, thus obtain excellent enhanced leaktightness performance, after sealing system is lax, pad has enough resilience to continue to keep and the fitting tightly of flange facing.Compared with prior art; have forced seal, structure simple, load and unload easy, to be conducive to sealing surface protection; manufacturing cycle is short, cost is low, load and unload easy advantage, is especially more suitable for the dynamic seal (packing) of large scale structure under High Temperature High Pressure and fluctuation operating mode than other sealing configurations.
Description
Technical field
The application relates to the sealing technique that bearing device (such as: boiler, pressurized container, heat exchanger, pressure piping, the air cylinder etc.) opening for petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry and other various chemical industry, air-conditioning, air cooling, electric power facility is connected, and is specially adapted to the conical seal (contact) face flange of the sealing configuration of high temperature and high pressure condition or the diaphragm sealing structure by mouth forging portion.
Background technique
In the sealing technique that existing bearing device opening connects, flange bolt forced seal system is the one be most widely used, but the structure species of flange is a lot, include welded flange, welding neckflange, welding neck flange, full face flange, narrow face flange, inverse flange and cylindrical ends, conical end, flange, heat exchanger tube sheet, blank cap, also have the structures such as lap joint flange.
In prior art, typical flange seal auxiliary structure as shown in Figure 1, each flange is generally made up of the bolt hole 12 of flange plate 11, construction bolt nut fastener, neck 13, the end groove 14 docked with pressure-bearing shell, pad 15 and sealing surface 16, and wherein sealing surface 16 is sealing plane.Bolt is through the bolt hole 12 of upper and lower two flanges, jack panel on bolt end, make the sealing surface 16 of two flanges close to each other, compress gasket 15, make the medium of flange internal pressure p cannot from dotted arrow direction by compress gasket 15 and and flange between sealing surface to flee flange outside.
The ubiquitous practical problem of above-mentioned conventional construction is, when making the pressure p of flange interior media, temperature T rising or fluctuating, higher pressure produces the tensile force f shown in solid arrow at the two ends of flange, higher temperature makes bolt expanded by heating extend, sealing system relaxes, pad 15 does not have enough resilience to continue to keep and the fitting tightly of flange facing 16, and it is outside that high-temperature high-pressure medium flees flange by sealing surface, explosion caused pyrophoricity accident.As can be seen here, the sealing technique that bearing device opening connects is the key of whole equipment.
From technological layer analysis, the basic reason that flange interior media leaks is: after sealing system is lax, and pad 15 does not have enough resiliences to continue to keep and the fitting tightly of flange facing.
For a long time, people are devoted to the research that opening connects sealing configuration always, main direction of studying is the rebound degree how improving pad, defines such as: traditional forced seal structure such as seal weld flange sealing structure, thread-locking ring sealing configuration of octangonal ring, oval ring, bimetal pad, dentiform gasket, planar separator pad, sphere barrier film pad and their combination, T-slot metal gasket flange sealing structure, thin-walled Ω ring structure, graphite wound gasket, ripple odontolith ink composite pad; Also form such as: the self-tightening sealing structures such as B shape ring, C shape ring, O shape ring, cambridge ring, Cachaly seal, Bridgman sealing, bimetal ripple odontolith ink composite pad seal, membrane type sealed.Above-mentioned sealing configuration because of strengthening effect not enough, going deep into particularly along with practical application, it is found that these structures itself also exist some disadvantageous places.Main Problems existing is:
The first, complex structure, sealing system component rapid wear, troublesome poeration.
The second, need high-caliber welding.As the seal weld of thin-walled Ω ring structure.
3rd, huge structure.As common large flange type sealing, flange and end cap are very thick, and not temperature compensated adjustment.
4th, sealing pair functional deterioration.
The sealing pair that particularly between device overhaul time, structure is simple, part is few can shorten a repair time and can produce significant economic benefit.Along with the maximization of device, the enhancing of environmental protection consciousness, the lifting of oil quality needs to take the technique under high pressure at higher temperature, the pressurized container playing buffering and deposit effect in device reduces, the operation easier of the nucleus equipment such as reactor and heat exchanger increases, the fluctuation being often directly subject to fluid medium pressure and temperature is impacted, original equipment open sealing structure is difficult to the process and management requirement adapting to new situations, as can be seen here, for the flange positive drive type sealing configuration that amount is large and wide, improve in conjunction with Problems existing, research and develop a kind of sealing reliability good, enhanced leaktightness function, and structure is simple, the flange that the efficiency of loading and unloading is high, in field of engineering technology, there is very far-reaching and great meaning.
Summary of the invention
The object of the application is avoid deficiency of the prior art and provide one can improve assembling quality and the efficiency of loading and unloading, and the flange that structure is simple, enhanced leaktightness performance is good.
The object of the application is achieved through the following technical solutions:
providethe first flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, wherein: described primary sealing area is first conical surface, described secondary sealing area is second conical surface matched with first conical surface of described primary sealing area, described first flange comprises by the first outer ring surface connected successively, the evagination step of described first conical surface and the first inner ring surface composition, described second flange comprises by the second outer ring surface connected successively, the indent step of described second conical surface and the second inner ring surface composition, gap is left between described evagination step and described indent step, the height of described first inner ring surface is greater than or less than the height of described first outer ring surface, the height of corresponding described second inner ring surface is greater than or less than the height of described second outer ring surface, angle between described first outer ring surface and described first conical surface is acute angle or obtuse angle, and the angle between corresponding described second outer ring surface and described second conical surface is acute angle or obtuse angle.
Wherein: the internal face of described first inner ring surface and described second inner ring surface and the inner ring surface of described flange are same inner ring surfaces, the diameter comprising described first inner ring surface and described second inner ring surface is equal to the cylindrical shape inner ring surface of the diameter of the center hole of described flange; Or the internal face of the internal face and described flange that comprise described first inner ring surface and described second inner ring surface is the conical inner ring surface of diameter with flange Axial changes.
Wherein: the height of described first inner ring surface equals zero, the height of described second inner ring surface equals the height of described second outer ring surface.
Wherein: described evagination step and described indent step composition sealing pair, described first inner ring surface in described sealing pair and the diameter of described second inner ring surface are all greater than the diameter of the center hole of described flange; Or, described first flange comprises two evagination steps, corresponding described second flange comprises two indent steps, first evagination step and the first indent step form the first sealing pair, second evagination step and the second indent step form the second sealing pair, first inner ring surface of described first sealing pair and the diameter of the second inner ring surface are all greater than the diameter of the center hole of described flange, and the first inner ring surface of described second sealing pair and the diameter of the second inner ring surface are all greater than the first inner ring surface of described first sealing pair and the diameter of the second inner ring surface.
additionally providethe second flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, wherein: described primary sealing area is the first arc shaped surface, described secondary sealing area is the second arc shaped surface matched with the first arc shaped surface of described primary sealing area, described first flange comprises by the first outer ring surface connected successively, first plane, described first arc shaped surface, the evagination step of the second plane and the first inner ring surface composition, described second flange comprises by the second outer ring surface connected successively, 3rd plane, the indent step of described second arc shaped surface and the 4th plane composition, gap is left between described evagination step and described indent step.
Wherein: the width of described first plane, described 3rd plane is zero; Or described second plane, described quadriplanar width are zero.
additionally providethe third flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, wherein: the one sealing surface in described primary sealing area and described secondary sealing area is the conical surface or arc shaped surface, and another sealing surface is plane.
Wherein: described first flange comprises the evagination step be made up of the first outer ring surface connected successively, the described conical surface and the first inner ring surface, or described first flange comprises the evagination step be made up of the first outer ring surface connected successively, described arc shaped surface and the first inner ring surface; Described second flange comprises the indent step be made up of the second outer ring surface connected successively and plane, leaves gap between described evagination step and described indent step.
additionally provide4th kind of flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, wherein: described first flange is docked by symmetrically arranged the first half flange bodies and the second half flange bodies and forms, described second flange corresponding with described first flange is docked by symmetrically arranged 3 half flange body and the 4 half flange body and forms, described the first half flange bodies and described 3 half flange body arrange face-to-face and form described first sealing pair, described the second half flange bodies and described 4th flange body arrange formation second sealing pair face-to-face, described first sealing pair and described second sealing pair are the combination of any one or two kinds of sealing pairs in the secondary or arc shaped surface sealing pair of conical surface seal.
Described primary sealing area and the one-body molded setting of described first flange in above-mentioned first, second, third and fourth kind flange technological scheme or be connected is arranged; Described secondary sealing area and the one-body molded setting of described second flange or be connected is arranged.
Described gasket seal in above-mentioned first, second, third and fourth kind flange technological scheme comprises plain cushion, bimetal pad, dentiform gasket, profile of tooth composite pad, waveform composite pad, planar separator pad, sphere barrier film pad and their combination.
Described flange in above-mentioned first, second, third and fourth kind flange technological scheme includes the structure 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.As long as its sealing surface is the conical surface or arc shaped surface, its body structure shape is then diversified.
The beneficial effect of the application: the application adopts the unique texture of four kinds of flanges, make the pairing structure of its sealing surface can be applied to a kind of torsion of traditional gasket seal, the anti-twisted active force of gasket seal then shows as the raising of resilience, thus obtain excellent enhanced leaktightness performance, after sealing system is lax, gasket seal has enough resiliences to continue to keep and the fitting tightly of flange facing.Compared with prior art; there is forced seal, structure is simple, designing technique is easy, load and unload easy, to be conducive to sealing surface protection; good seal performance; manufacturing cycle is short, cost is low, load and unload easy advantage, is especially more suitable for the dynamic seal (packing) of large scale structure under High Temperature High Pressure and fluctuation operating mode than other sealing configurations.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the application, but the embodiment in accompanying drawing does not form any restriction to the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the typical structure schematic diagram of a kind of flange of the prior art.
Fig. 2 is the partial structurtes schematic diagram of wherein a kind of scheme of the embodiment 1 of a kind of flange of the application.
Fig. 3 is the sealing surface of a kind of flange of the application partial structurtes schematic diagram when just having contacted gasket seal.
Fig. 4 is the partial structurtes schematic diagram after the sealing surface compact gasket seal of a kind of flange of the application.
Fig. 5 is the partial structurtes schematic diagram of wherein a kind of scheme of the embodiment 1 of a kind of flange of the application.
Fig. 6 is the partial structurtes schematic diagram of wherein a kind of scheme of the embodiment 1 of a kind of flange of the application.
Fig. 7 is the partial structurtes schematic diagram of the embodiment 2 of a kind of flange of the application.
Fig. 8 is the partial structurtes schematic diagram of the embodiment 3 of a kind of flange of the application.
Fig. 9 is the partial structurtes schematic diagram of the embodiment 4 of a kind of flange of the application.
Figure 10 is the partial structurtes schematic diagram of wherein a kind of scheme of the embodiment 6 of a kind of flange of the application.
Figure 11 is the partial structurtes schematic diagram of wherein a kind of scheme of the embodiment 6 of a kind of flange of the application.
Include in Fig. 1 to Figure 11:
11---flange plate, 12---bolt hole, 13---neck, 14---end groove, 15---pad, 16---annular plane;
100---gasket seal;
200---the first flange, 201---the first outer ring surface, 202---first conical surface, 203---the first inner ring surface, 204---the first arc shaped surface, 205---the first plane, 206---the second plane, 207---coil, 208---the first weld layers;
300---the second flange, 301---the second outer ring surface, 302---second conical surface, 303---the second inner ring surface, 304---the second arc shaped surface, 305---the 3rd plane, 306---the 4th plane, 307---coil, 308---the second weld layers;
400---the center hole of flange;
P---the pressure of medium in bearing device, F---pressure medium acts on the power of flange end, Q---flange facing is applied to the power of gasket seal, the M---elastic torque that gasket seal will resile.
Embodiment
With the following Examples the application is described in further detail.
embodiment 1
One of embodiment of a kind of flange of the application, for the sealing configuration connected between bearing device component openings, shown in figure 2, comprise first flange 200 with primary sealing area, and there is the second flange 300 of secondary sealing area, gasket seal 100 is provided with between described primary sealing area and described secondary sealing area, described first flange 200, described gasket seal 100 and described second flange 300 fit tightly under the effect of fastening piece, and above-mentioned is the structure of prior art flange.The innovation of the application is: one technological scheme is described primary sealing area is first conical surface 202, described secondary sealing area is second conical surface 302 matched with first conical surface 202 of described primary sealing area, described first flange 200 comprises by the first outer ring surface 201 connected successively, the evagination step of described first conical surface 202 and the first inner ring surface 203 composition, described second flange 300 comprises by the second outer ring surface 301 connected successively, the indent step of described second conical surface 302 and the second inner ring surface 303 composition, gap is left between described evagination step and described indent step, the height of described first inner ring surface 203 is less than the height of described first outer ring surface 201, the height of corresponding described second inner ring surface 303 is less than the height of described second outer ring surface 301, angle between described first outer ring surface 201 and described first conical surface 202 is acute angle, and the angle between corresponding described second outer ring surface 301 and described second conical surface 302 is acute angle.Described first inner ring surface 203 and the described internal face of the second inner ring surface 303 and the inner ring surface of described flange are same inner ring surfaces, the diameter comprising described first inner ring surface 203 and described second inner ring surface 303 is equal to the cylindrical shape inner ring surface of the diameter of the center hole 400 of described flange, or to comprise described first inner ring surface 203 and the described internal face of the second inner ring surface 303 and the internal face of described flange be the conical inner ring surface of diameter with flange Axial changes.
It should be noted that, described primary sealing area refers to and the face that gasket seal 100 contacts with sealing surface in described secondary sealing area, and the application is the improvement for sealing surface.
The height of described first inner ring surface 203 in another technological scheme is greater than the height of described first outer ring surface 201, and the height of corresponding described second inner ring surface 303 is greater than the height of described second outer ring surface 301; Angle between described first outer ring surface 201 and described first conical surface 202 is obtuse angle, and the angle between corresponding described second outer ring surface 301 and described second conical surface 302 is obtuse angle.Omit accompanying drawing signal at this, those skilled in the art can structure according to Fig. 2, very clearly knows the concrete structure of this technological scheme.
The left side of Fig. 2 center line is a kind of sealing surface of flange schematic diagram when just having contacted gasket seal 100, and its partial structurtes are the schematic diagram after a kind of sealing surface compact gasket seal 100 of flange with reference to the right side of figure 3, Fig. 2 center line, and its partial structurtes are with reference to figure 4.That in Fig. 1, sealing surface is plane, and the sealing surface in the application is inclined-plane with the difference of flange seal auxiliary structure of the prior art shown in Fig. 1.Concrete, after the conical surface seal face of flange contacts with traditional plane sealing pad 100, further coordinate and will be applied to gasket seal 100 1 power to Q, make gasket seal 100 produce torsional deflection, form torsional interaction M, until gasket seal 100 fits tightly with the conical surface of flange.After sealing system is lax, the anti-twisted distortion that gasket seal 100 has, the trend resiled, recover original plain cushion structure, thus show higher rebound elasticity, and continuation maintenance fits tightly with flange facing, forms effective sealing all the time.The traditional planar sealing pad of structure shown in Fig. 1 is after sealing system is lax, only has the resilience of gasket material itself, finite elastic, and the inclined-plane sealing pair of the application is except having the resilience of gasket material itself, also there is the construction rebound performance that will be resiled by the plain cushion structure reversed, and structural resilience is greater than material rebounds, thus obtain excellent sealability.The key of innovation is that the conical surface that these flanges seal can make plain cushion play torsional deflection, and is not only gasket seal 100 is compressed become flat.The tapering of sealing surface is larger, and its torsional deflection being applied to plain cushion is larger, but also limited, and plain cushion can not exceed the permissible stress of plain cushion material by the stress turning round generation, in order to avoid produce plastic deformation after plain cushion surrender, and cannot resilience.The flange with conical surface seal face in the application without the need to requiring flange itself, simultaneously also without the need to preservative treatment.
Outer rim or the inner edge height of evagination step are the highest; when the first flange 200 towards ground place or multiple stacked time; the highest outer rim or inner edge is only had to contact with supporting surface or bearing object; can not be that the sealing surface of whole first flange 200 contacts with bearing object; need not worry that the sealing surface of flange is damaged by pressure, more be conducive to the sealing surface protecting flange.In the inner edge recessed step of indent step, make sealing surface need not directly contact supporting surface or bearing object, thus more effectively protect the sealing surface of flange.
Compared with prior art; the flange seal pair of conical seal (contact) face have structure simple, load and unload easy, to be conducive to sealing surface protection, be more suitable for the dynamic seal (packing) of large scale structure High Temperature High Pressure and fluctuation operating mode thereof than other structures and sealability is further strengthened.
Separately, the sealing surface of the conical surface both can be spill, also can be convex.The conical surface seal face of spill or convex is change at the active force being applied to gasket seal 100, makes full use of structure and effectively fills, have better dynamic sealing performance; The slip of gasket seal 100 can also be prevented simultaneously, improve its sealability further.
Separately, the tapering of first conical surface 202 and second conical surface 302 can be set to equal, also can be set to unequal.Stationarity is better.
Separately, shown in figure 5, on first conical surface 202 of the first flange 200 and second conical surface 302 of the second flange 300 processes the camber line of a circle circle, groove line or wave molding, in machining sealing surface, popular title groove line is waterline.The conical surface and coil 207,307 can when adopting the good flange of same clamping machine tool in same operation together with process.These coils 207,307 have the friction increased between sealing surface and gasket seal 100, prevent gasket seal 100 from sliding, and improve the effect of sealability; And provide reference position for pad symmetry is installed on sealing surface, in order to avoid installation deviation; Simultaneously under the effect forcing bolt presses power can swelling in above-mentioned coil 207,307, play better seal action.Optionally, the coil 207 be positioned on first conical surface 202 is crisscross arranged with the coil 307 be positioned on second conical surface 302.
Concrete, shown in figure 9, described primary sealing area and the one-body molded setting of described first flange 200 or be connected is arranged; Described secondary sealing area and the one-body molded setting of described second flange 300 or be connected is arranged.Integrated formed structure, as casting, forging molding, roll forming, etc.The structure of combination, as welding combination, casting combination, forging combination, rolling combination, etc.Composite structure can make full use of body material and sealing surface layer material characteristic separately, plays respective advantage, and such as sealing surface layer material is corrosion-resistant and be not afraid of media damage, high hardness and be not afraid of pad and fray.The welding of selecting can be manual electric arc welding, submerged arc welding, argon arc welding, etc.First conical surface 202 in Fig. 9 welds rear formation first weld layer 208, second conical surface 302 and welds rear formation second weld layer 308.
embodiment 2
The embodiment two of a kind of flange of the application, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature, adopts the explanation in embodiment 1, no longer repeats at this.Shown in figure 6, the difference of the present embodiment and embodiment 1 is, concrete, and the height of described first inner ring surface 203 equals zero because the first inner ring surface 203 in flange shaft to being protrude, the minimizing of its height can not weaken the intensity of flange; The height of described second inner ring surface 303 equals the height of described second outer ring surface 301 because the second inner ring surface 303 in flange shaft to what be originally lower than the second outer ring surface 301, the increase of its height is conducive to the intensity improving flange.The tapering of sealing surface is larger, and its torsional deflection being applied to gasket seal 100 is larger.
embodiment 3
The embodiment three of a kind of flange of the application, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature, adopts the explanation in embodiment 1, no longer repeats at this.Shown in figure 7, the difference of the present embodiment and embodiment 1 is, concrete, and the diameter of described first inner ring surface 203 and described second inner ring surface 303 is all greater than the diameter of the center hole 400 of described flange.Because sealing surface is closer to flange bolt hole 12, pad is more directly subject to bolt and is transmitted the pressuring action come by flange, has better sealability.
Or, concrete, described sealing configuration has two sealing pairs simultaneously, also namely the first inner ring surface 203 of first sealing pair and the diameter of described second inner ring surface 303 are all greater than the diameter of the center hole 400 of described flange, and the diameter of the first inner ring surface 203 of second sealing pair and described second inner ring surface 303 is all greater than the first inner ring surface 203 of described first sealing pair and the diameter of described second inner ring surface 303.After pressure in superelevation makes flange pair open, if the first sealing pair is lax cause dielectric leakage, the second sealing pair can continue to bear seal action, has dual sealing safety performance.
embodiment 4
The embodiment four of a kind of flange of the application, for the sealing configuration connected between bearing device component openings, shown in figure 8, comprise first flange 200 with primary sealing area, and there is the second flange 300 of secondary sealing area, gasket seal 100 is provided with between described primary sealing area and described secondary sealing area, described first flange 200, described gasket seal 100 and described second flange 300 fit tightly under the effect of fastening piece, and above-mentioned is the structure of prior art flange.The innovation of the application is: described primary sealing area is the first arc shaped surface 204, described secondary sealing area is the second arc shaped surface 304 matched with the first arc shaped surface 204 of described primary sealing area, described first flange 200 comprises by the first outer ring surface 201 connected successively, first plane 205, described first arc shaped surface 204, the evagination step of the second plane 206 and the first inner ring surface 203 composition, described second flange 300 comprises by the second outer ring surface 301 connected successively, 3rd plane 305, the indent step of described second arc shaped surface 304 and the 4th plane 306 composition, gap is left between described evagination step and described indent step.Arc shaped surface can be processed together with other planes are in same operation, high with the cambered surface validity of conputer controlled processing, processed by pattern and also can meet the demands, the completely manual man-hour validity of adding is lower, but no matter any processing method, all should detect arc shape with Template Controls.
After arc shaped surface and traditional gasket seal 100 of flange coordinates and contact, be applied to gasket seal 100 1 torsion further, make gasket seal 100 produce torsional deflection, fit tightly with the cambered surface of flange.After sealing system is lax, gasket seal 100 has the trend of anti-twisted distortion, recover original structure, thus shows higher rebound elasticity, and continuation maintenance fits tightly with flange facing, forms effective sealing all the time.Therefore, this flange pair has certain self-tightening sealing performance.The key of innovation is that the arc shaped surface that these flanges seal can make sealing plain cushion play torsional deflection, and is not only plain cushion is compressed become flat.The radian of sealing surface is larger, and its torsional deflection being applied to plain cushion is larger, but also limited, and plain cushion can not exceed the permissible stress of plain cushion material by the stress turning round generation, in order to avoid produce plastic deformation after plain cushion surrender, and cannot resilience.Compared with prior art; the flange seal pair of arc sealing surface have structure simple, load and unload easy, to be conducive to sealing surface protection, be more suitable for the dynamic seal (packing) of large scale structure High Temperature High Pressure and fluctuation operating mode thereof than other structures and sealability is further strengthened.The flange with arc shaped surface sealing surface in the application without the need to requiring flange itself, simultaneously also without the need to preservative treatment.
Separately, the sealing surface of arc shaped surface both can be concave arc, also can be convex arc.The active force at the two ends of arc shaped surface is the strongest, the better press seal pad 100 at two ends place, and in middle part segmental arc, gasket seal 100 can rely on the spring-back force of himself to be filled and realize sealing preferably.
Outer rim or the inner edge height of evagination step are the highest; when the first flange 200 towards ground place or multiple stacked time; the highest outer rim or inner edge is only had to contact with supporting surface or bearing object; can not be that the sealing surface of whole first flange 200 contacts with bearing object; need not worry that the sealing surface of flange is damaged by pressure, more be conducive to the sealing surface protecting flange.In the inner edge recessed step of indent step, make sealing surface need not directly contact supporting surface or bearing object, thus more effectively protect the sealing surface of flange.
Concrete, described primary sealing area and the one-body molded setting of described first flange 200 or be connected is arranged; Described secondary sealing area and the one-body molded setting of described second flange 300 or be connected is arranged.Integrated formed structure, as casting, forging molding, roll forming, etc.The structure of combination, as welding combination, casting combination, forging combination, rolling combination, etc.Composite structure can make full use of body material and sealing surface layer material characteristic separately, plays respective advantage, and such as sealing surface layer material is corrosion-resistant and be not afraid of media damage, high hardness and be not afraid of pad and fray.The welding of selecting can be manual electric arc welding, submerged arc welding, argon arc welding, etc.
embodiment 5
The embodiment five of a kind of flange of the application, the main technical schemes of the present embodiment is identical with embodiment 4, in the present embodiment unaccounted feature, adopts the explanation in embodiment 4, no longer repeats at this.The difference of the present embodiment and embodiment 4 is, concrete, and the width of described first plane 205, described second plane 206, described 3rd plane 305 and described 4th plane 306 is zero.Arc sealing surface runs through the whole sealing surface of evagination step and indent step.
Or concrete, the width of described first plane 205 and described 3rd plane 305 is zero, and the width of described second plane 206 and described 4th plane 306 is non-vanishing.Arc sealing surface runs through the whole outer side seal face of evagination step and indent step.
Or concrete, the width of described first plane 205 and described 3rd plane 305 is non-vanishing, and the width of described second plane 206 and described 4th plane 306 is zero.Arc sealing surface runs through the whole inner seal face of evagination step and indent step.
embodiment 6
The embodiment six of a kind of flange of the application, for the sealing configuration connected between bearing device component openings, with reference to shown in Figure 10 and Figure 11, comprise first flange 200 with primary sealing area, and there is the second flange 300 of secondary sealing area, gasket seal 100 is provided with between described primary sealing area and described secondary sealing area, described first flange 200, described gasket seal 100 and described second flange 300 fit tightly under the effect of fastening piece, wherein: the one sealing surface in described primary sealing area and described secondary sealing area is the conical surface or arc shaped surface, another sealing surface is plane.Gasket seal 100 can be sphere barrier film pad, or sphere barrier film pad also can change planar separator pad into.
After the conical surface of flange or arc shaped surface and traditional gasket seal 100 coordinate and contact, be applied to gasket seal 100 1 torsion further, make gasket seal 100 produce torsional deflection, fit tightly with the cambered surface of flange.After sealing system is lax, gasket seal 100 has the trend of anti-twisted distortion, recover original structure, thus shows higher rebound elasticity, and continuation maintenance fits tightly with flange facing, forms effective sealing all the time.Therefore, this flange pair has certain self-tightening sealing performance.The key of innovation is that the conical surface that these flanges seal or arc shaped surface can make plain cushion play torsional deflection, and is not only plain cushion is compressed become flat.Tapering or the radian of sealing surface are larger, and its torsional deflection being applied to plain cushion is larger, but also limited, and plain cushion can not exceed the permissible stress of plain cushion material by the stress turning round generation, in order to avoid produce plastic deformation after plain cushion surrender, and cannot resilience.Compared with prior art; the flange seal pair of taper or arc sealing surface have structure simple, load and unload easy, to be conducive to sealing surface protection, be more suitable for the dynamic seal (packing) of large scale structure High Temperature High Pressure and fluctuation operating mode thereof than other structures and sealability is further strengthened.The flange with the conical surface or arc shaped surface sealing surface in the application without the need to requiring flange itself, simultaneously also without the need to preservative treatment.
Separately, the sealing surface of the conical surface or arc shaped surface both can be spill, also can be convex.The sealing surface of plane side can be wide plane, can one be also narrow plane.The conical surface seal face of spill or convex is change at the active force being applied to gasket seal 100, makes full use of structure and effectively fills, have better dynamic sealing performance; The slip of gasket seal 100 can also be prevented simultaneously, improve its sealability further.The active force at the two ends of arc shaped surface is the strongest, the better press seal pad 100 at two ends place, and in middle part segmental arc, gasket seal 100 can rely on the spring-back force of himself to be filled and realize sealing preferably.
Outer rim or the inner edge height of evagination step are the highest; when the first flange 200 towards ground place or multiple stacked time; the highest outer rim or inner edge is only had to contact with supporting surface or bearing object; can not be that the sealing surface of whole first flange 200 contacts with bearing object; need not worry that the sealing surface of flange is damaged by pressure, more be conducive to the sealing surface protecting flange.
Concrete: described first flange 200 comprises the evagination step be made up of the first outer ring surface 201 connected successively, the described conical surface and the first inner ring surface 203, or described first flange 200 comprises the evagination step be made up of the first outer ring surface connected successively, described arc shaped surface and the first inner ring surface 203; Described second flange 300 comprises the indent step be made up of the second outer ring surface 301 connected successively and plane, leaves gap between described evagination step and described indent step.
Concrete, described primary sealing area and the one-body molded setting of described first flange 200 or be connected is arranged; Described secondary sealing area and the one-body molded setting of described second flange 300 or be connected is arranged.Integrated formed structure, as casting, forging molding, roll forming, etc.The structure of combination, as welding combination, casting combination, forging combination, rolling combination, etc.Composite structure can make full use of body material and sealing surface layer material characteristic separately, plays respective advantage, and such as sealing surface layer material is corrosion-resistant and be not afraid of media damage, high hardness and be not afraid of pad and fray.The welding of selecting can be manual electric arc welding, submerged arc welding, argon arc welding, etc.
embodiment 7
The embodiment seven of a kind of flange of the application, for the sealing configuration connected between bearing device component openings, comprise first flange 200 with primary sealing area, and there is the second flange 300 of secondary sealing area, gasket seal 100 is provided with between described primary sealing area and described secondary sealing area, described first flange 200, described gasket seal 100 and described second flange 300 fit tightly under the effect of fastening piece, wherein: described first flange 200 is docked by symmetrically arranged the first half flange bodies and the second half flange bodies and forms, described second flange 300 corresponding with described first flange 200 is docked by symmetrically arranged 3 half flange body and the 4 half flange body and forms, described the first half flange bodies and described 3 half flange body arrange face-to-face and form described first sealing pair, described the second half flange bodies and described 4th flange body arrange formation second sealing pair face-to-face, described first sealing pair and described second sealing pair are the combination of any one or two kinds of sealing pairs in the secondary or arc shaped surface sealing pair of conical surface seal.Make full use of the advantage of the conical surface and arc shaped surface sealing surface, its sealability is further improved.The flange with the conical surface and/or arc shaped surface sealing surface in the application without the need to requiring flange itself, simultaneously also without the need to preservative treatment.
After the conical surface of flange or arc shaped surface and traditional gasket seal 100 coordinate and contact, be applied to gasket seal 100 1 torsion further, make gasket seal 100 produce torsional deflection, fit tightly with the cambered surface of flange.After sealing system is lax, gasket seal 100 has the trend of anti-twisted distortion, recover original structure, thus shows higher rebound elasticity, and continuation maintenance fits tightly with flange facing, forms effective sealing all the time.Therefore, this flange pair has certain self-tightening sealing performance.The key of innovation is that the conical surface that these flanges seal or arc shaped surface can make plain cushion play torsional deflection, and is not only plain cushion is compressed become flat.Tapering or the radian of sealing surface are larger, and its torsional deflection being applied to plain cushion is larger, but also limited, and plain cushion can not exceed the permissible stress of plain cushion material by the stress turning round generation, in order to avoid produce plastic deformation after plain cushion surrender, and cannot resilience.Compared with prior art; the flange seal pair of taper or arc sealing surface have structure simple, load and unload easy, to be conducive to sealing surface protection, be more suitable for the dynamic seal (packing) of large scale structure High Temperature High Pressure and fluctuation operating mode thereof than other structures and sealability is further strengthened.
Separately, the sealing surface of the conical surface or arc shaped surface both can be spill, also can be convex.The conical surface seal face of spill or convex is change at the active force being applied to gasket seal 100, makes full use of structure and effectively fills, have better dynamic sealing performance; The slip of gasket seal 100 can also be prevented simultaneously, improve its sealability further.The active force at the two ends of arc shaped surface is the strongest, the better press seal pad 100 at two ends place, and in middle part segmental arc, gasket seal 100 can rely on the spring-back force of himself to be filled and realize sealing preferably.
Concrete, described primary sealing area and the one-body molded setting of described first flange 200 or be connected is arranged; Described secondary sealing area and the one-body molded setting of described second flange 300 or be connected is arranged.Integrated formed structure, as casting, forging molding, roll forming, etc.The structure of combination, as welding combination, casting combination, forging combination, rolling combination, etc.Composite structure can make full use of body material and sealing surface layer material characteristic separately, plays respective advantage, and such as sealing surface layer material is corrosion-resistant and be not afraid of media damage, high hardness and be not afraid of pad and fray.The welding of selecting can be manual electric arc welding, submerged arc welding, argon arc welding, etc.
Finally should be noted that; above embodiment is only in order to illustrate the technological scheme of the application; but not the restriction to the application's protection domain; although done to explain to the application with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technological scheme of the application or equivalent replacement, and not depart from essence and the scope of technical scheme.
Claims (10)
1. a flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, it is characterized in that: described primary sealing area is first conical surface, described secondary sealing area is second conical surface matched with first conical surface of described primary sealing area, described first flange comprises by the first outer ring surface connected successively, the evagination step of described first conical surface and the first inner ring surface composition, described second flange comprises by the second outer ring surface connected successively, the indent step of described second conical surface and the second inner ring surface composition, gap is left between described evagination step and described indent step, the height of described first inner ring surface is greater than or less than the height of described first outer ring surface, the height of corresponding described second inner ring surface is greater than or less than the height of described second outer ring surface, angle between described first outer ring surface and described first conical surface is acute angle or obtuse angle, and the angle between corresponding described second outer ring surface and described second conical surface is acute angle or obtuse angle.
2. a kind of flange according to claim 1, it is characterized in that: the internal face of described first inner ring surface and described second inner ring surface and the inner ring surface of described flange are same inner ring surfaces, the diameter comprising described first inner ring surface and described second inner ring surface is equal to the cylindrical shape inner ring surface of the diameter of the center hole of described flange; Or the internal face of the internal face and described flange that comprise described first inner ring surface and described second inner ring surface is the conical inner ring surface of diameter with flange Axial changes.
3. a kind of flange according to claim 2, is characterized in that: the height of described first inner ring surface equals zero, and the height of described second inner ring surface equals the height of described second outer ring surface.
4. a kind of flange according to claim 1, it is characterized in that: described evagination step and described indent step composition sealing pair, described first inner ring surface in described sealing pair and the diameter of described second inner ring surface are all greater than the diameter of the center hole of described flange; Or, described first flange comprises two evagination steps, corresponding described second flange comprises two indent steps, first evagination step and the first indent step form the first sealing pair, second evagination step and the second indent step form the second sealing pair, first inner ring surface of described first sealing pair and the diameter of the second inner ring surface are all greater than the diameter of the center hole of described flange, and the first inner ring surface of described second sealing pair and the diameter of the second inner ring surface are all greater than the first inner ring surface of described first sealing pair and the diameter of the second inner ring surface.
5. a flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, it is characterized in that: described primary sealing area is the first arc shaped surface, described secondary sealing area is the second arc shaped surface matched with the first arc shaped surface of described primary sealing area, described first flange comprises by the first outer ring surface connected successively, first plane, described first arc shaped surface, the evagination step of the second plane and the first inner ring surface composition, described second flange comprises by the second outer ring surface connected successively, 3rd plane, the indent step of described second arc shaped surface and the 4th plane composition, gap is left between described evagination step and described indent step.
6. a kind of flange according to claim 5, is characterized in that: described first plane, described second plane, described 3rd plane and described quadriplanar width are zero; Or the width of described first plane, described 3rd plane is zero; Or described second plane, described quadriplanar width are zero.
7. a flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, it is characterized in that: the one sealing surface in described primary sealing area and described secondary sealing area is the conical surface or arc shaped surface, and another sealing surface is plane.
8. a kind of flange according to claim 7, it is characterized in that: described first flange comprises the evagination step be made up of the first outer ring surface connected successively, the described conical surface and the first inner ring surface, or described first flange comprises the evagination step be made up of the first outer ring surface connected successively, described arc shaped surface and the first inner ring surface; Described second flange comprises the indent step be made up of the second outer ring surface connected successively and plane, leaves gap between described evagination step and described indent step.
9. a flange, for the sealing configuration connected between bearing device component openings, comprise first flange with primary sealing area, and there is the second flange of secondary sealing area, gasket seal is provided with between described primary sealing area and described secondary sealing area, described first flange, described gasket seal and described second flange fit tightly under the effect of fastening piece, it is characterized in that: described first flange is docked by symmetrically arranged the first half flange bodies and the second half flange bodies and forms, described second flange corresponding with described first flange is docked by symmetrically arranged 3 half flange body and the 4 half flange body and forms, described the first half flange bodies and described 3 half flange body arrange face-to-face and form described first sealing pair, described the second half flange bodies and described 4th flange body arrange formation second sealing pair face-to-face, described first sealing pair and described second sealing pair are the combination of any one or two kinds of sealing pairs in the secondary or arc shaped surface sealing pair of conical surface seal.
10. according to the arbitrary described a kind of flange in claim 1,5,7,9, it is characterized in that: described primary sealing area and the one-body molded setting of described first flange or be connected is arranged; Described secondary sealing area and the one-body molded setting of described second flange or be connected is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437594.8U CN204025982U (en) | 2014-08-05 | 2014-08-05 | A kind of flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437594.8U CN204025982U (en) | 2014-08-05 | 2014-08-05 | A kind of flange |
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| Publication Number | Publication Date |
|---|---|
| CN204025982U true CN204025982U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420437594.8U Active CN204025982U (en) | 2014-08-05 | 2014-08-05 | A kind of flange |
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| CN (1) | CN204025982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089120A (en) * | 2014-08-05 | 2014-10-08 | 茂名重力石化机械制造有限公司 | Flange |
| CN111322475A (en) * | 2018-12-13 | 2020-06-23 | 王瑞六 | Flange protection structure with detection and early warning functions and pipeline joint leakage prevention device |
-
2014
- 2014-08-05 CN CN201420437594.8U patent/CN204025982U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089120A (en) * | 2014-08-05 | 2014-10-08 | 茂名重力石化机械制造有限公司 | Flange |
| CN111322475A (en) * | 2018-12-13 | 2020-06-23 | 王瑞六 | Flange protection structure with detection and early warning functions and pipeline joint leakage prevention device |
| CN111322475B (en) * | 2018-12-13 | 2021-12-21 | 王瑞六 | Flange protection structure with detection and early warning functions |
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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 |