CN204004669U - Pressure-driven formula sealing configuration - Google Patents
Pressure-driven formula sealing configuration Download PDFInfo
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- CN204004669U CN204004669U CN201420402784.6U CN201420402784U CN204004669U CN 204004669 U CN204004669 U CN 204004669U CN 201420402784 U CN201420402784 U CN 201420402784U CN 204004669 U CN204004669 U CN 204004669U
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- inserted link
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Abstract
Originally relate to a kind of gas or the sealing configuration of liquid under hyperbaric environment of being applicable to, refer in particular to a kind of pressure-driven formula sealing configuration, it is made up of the inserted link and the valve body that coordinate grafting, on described inserted link, have seal groove, in sealing groove, be provided with the seal ring using under hyperbaric environment, described inserted link and valve body seal by seal ring, wherein, described seal ring and seal groove Spielpassung, the inner ring wall of seal ring and the distance of seal groove bottom surface be L; In the time that inserted link is not pegged graft with valve body, the distance between the collar wall of seal ring and the inwall of valve body mounting hole is L1, and L1≤L.Structure is very simple, very light when installation, and aerating person, in the time that air filling gun head is inserted in valve seat, can experience without obvious resistance; Good sealing effect, improves sealing effect by the pressure of air pressure or hydraulic pressure self, mode uniqueness; Long service life, can be used half a year or 1 year continuously according to the difference of configuration mode, more than even reaching a year and a half.
Description
Technical field
Originally relate to a kind of gas or the sealing configuration of liquid under hyperbaric environment of being applicable to, refer in particular to a kind of pressure-driven formula sealing configuration.
Background technique
In existing natural gas filling station, between air filling gun head and valve component, be to rely on seal ring to realize sealing, to rely on its tension force to realize sealing after becoming an approximate ellipsoidal by extrusion-deformation and seal ring plays seal action, namely the inner and outer wall of seal ring is fitted closely with the bottom surface of seal groove and the mounting hole inwall of valve component respectively, as shown in Figure 6, after air filling gun head and valve component assemble, the seal ring that is arranged on air filling gun head is subject to the restriction in space and extrusion-deformation, its cross section ovalize.Because the aerating process of rock gas is the process of a high pressure aerating, and the pressure of general gas station in the time being vehicle aerating is at 20～40Mpa, be equivalent to the pressure of 200～400KG, seal ring while so just making is in working order very easily because there is secondary deformation in high pressure, as shown in Figure 7, can significantly see in the drawings, in aerating operation process, high-pressure natural gas forces the part generation deformation of seal ring and valve body laminating, and the seal ring of deformation part is subject to high pressure to be pressed against the rib place of sealing notch edges, so just there is the phenomenon of extruding cutting, destroy the structure of seal ring, the sealing effect of seal ring is declined.
In addition, in the time carrying out natural gas operation each time, between air filling gun head and valve component, all need to carry out plug once, and this aerating operation on average just need to be carried out once for every 6～10 minutes, also be just equivalent to the plug of 6～10 times in hour, and in the time that this plugs operation frequently, seal ring can be under the effect of strong extruding and cutting and damaged fast, its reason is, existing seal ring is installed to after seal groove, the inner ring wall of seal ring and the bottom surface of seal groove fit, and the race diameter of seal ring is the diameter that is obviously greater than the mounting hole of valve component, also only in this way, be inserted into after valve component at air filling gun head, the extrusion of seal ring ability, rely on its tension force to realize sealing, as shown in Figure 8, and in the time that air filling gun head inserts or extracts valve component, because the external diameter of seal ring is greater than the diameter of valve component mounting hole, seal ring can be fitted in closely on the inwall of mounting hole because of extruding in the process of air filling gun head plug, along with the insertion of air filling gun head or extract, cause the part generation friction texturizing of seal ring and the laminating of mounting hole inwall, and the part of distortion can be extruded to the rib place of sealing notch edges, there is extruding cutting phenomenon, cause the breakage of seal ring, make it seal failure, once there is seal ring broken invalid, just need to change immediately.And the main reason that seal ring lost efficacy plugs frequently exactly in the time of aerating operation, cause seal ring damaged fast.
According to incompletely statistics, it is after an aerating operation that existing seal ring lost efficacy the soonest, that is, after an aerating operation, seal ring just occurs that breakage needs to change; And working life best be also no more than 5 hours, for the aerating person of gas station, work the most frequently every day is exactly to change seal ring, and in the time changing seal ring, if accidentally the seal ring of new clothes is installed with the form of distortion, its seal ring cannot seal normally, and for high-pressure natural gas gas station, the situation of leaking while existing aerating, leaks once natural, and its consequence is hardly imaginable.
And can ensure again that it possesses the difficult problem that good sealing effect is the puzzlement whole world high-pressure natural gas aerating operation working life of how to improve seal ring simultaneously.
Model utility content
The technical problem that one, will solve
The purpose of this utility model is for the existing the problems referred to above of prior art, and it is a kind of simple in structure that spy provides, install very light, the pressure-driven formula sealing configuration of long service life.
Two, technological scheme
For solving the problems of the technologies described above, the utility model pressure-driven formula sealing configuration, by coordinating inserted link and the valve body of pegging graft to form, on described inserted link, have seal groove, in sealing groove, be provided with the seal ring using under hyperbaric environment, described inserted link and valve body seal by seal ring, wherein, described seal ring and seal groove Spielpassung, the inner ring wall of seal ring and the distance of seal groove bottom surface be L; In the time that inserted link is not pegged graft with valve body, the distance between the collar wall of seal ring and the inwall of valve body mounting hole is L1, and L1≤L.
As optimization, above-mentioned inserted link and valve body are Spielpassung.
As optimization, the seal ring number in same seal groove is more than one.
Three, the beneficial effects of the utility model
Structure is very simple, very light when installation, and aerating person, in the time that air filling gun head is inserted in valve seat, can experience without obvious resistance; Good sealing effect, improves sealing effect by the pressure of air pressure or hydraulic pressure self, mode uniqueness; Long service life, can be used half a year or 1 year continuously according to the difference of configuration mode, more than even reaching a year and a half.
Brief description of the drawings
Fig. 1 is the schematic diagram that inserted link of the present utility model does not insert valve body;
Fig. 2 is the free-body diagram of pressure-driven formula sealing configuration in the time of work;
Fig. 3 is that the utility model pressure-driven formula sealing configuration is applied in the structural representation one in high pressure aerating equipment;
Fig. 4 is that the utility model pressure-driven formula sealing configuration is applied in the structural representation two in high pressure aerating equipment;
Fig. 5 is that the utility model pressure-driven formula sealing configuration is applied in the structural representation three in high pressure aerating equipment;
Fig. 6 is that existing air filling gun head is inserted into the structural representation after valve component;
Fig. 7 is the existing structural representation that air filling gun head is out of shape by high pressure that is arranged on;
Fig. 8 is the existing schematic diagram of sealed ring deformation insert air filling gun head on valve component time.
In figure, 1 is inserted link, and 2 is valve body, and 3 is seal groove, and 4 is seal ring, and 5 is valve component, and 6 is air filling gun head, and 7 is air outlet hole.
Embodiment
Below in conjunction with accompanying drawing, the utility model pressure-driven formula sealing configuration is described further:
Mode of execution one: as shown in Figure 1, the utility model pressure-driven formula sealing configuration, by coordinating inserted link 1 and the valve body 2 of pegging graft to form, on described inserted link 1, have seal groove 3, in sealing groove 3, be provided with the seal ring 4 using under hyperbaric environment, state inserted link 1 and seal by seal ring 4 with valve body 2, wherein, above-mentioned seal ring 4 is Spielpassung with seal groove 3, and inserted link 1 is also Spielpassung with valve body 2, the distance of the inner ring wall of seal ring 4 and seal groove 3 bottom surfaces be L; In the time that inserted link 1 is not pegged graft with valve body 2, the distance between the collar wall of seal ring 4 and the inwall of valve body 2 mounting holes is L1, and L1≤L.Above-mentioned inserted link 1 does not insert before valve body 2, and the seal ring 4 being arranged in seal groove 3 is in the raw, and the L of foregoing description and L1 are seal ring 4 distances down and between seal groove 3 bottom surfaces and mounting hole inwall in the raw.
In Fig. 1, when inserted link 1 moves right while being inserted in the mounting hole of valve body 2, three seal rings 4 that are arranged in seal groove 3 are subject to the extruding of mounting hole inwall and shrink, because seal ring 4 is Spielpassung with seal groove 3, and L1≤L, so, in the time of assembling, inserted link 1 can be inserted into very easily in mounting hole or extract from mounting hole, friction between seal ring 4 and mounting hole inwall in plug process is very little, be not enough to make seal ring 4 to produce distortion, like this, just avoid the pressurization cutting between seal ring 4 and the rib at 3 mouthfuls of places of seal groove, guarantee that breakage can not occur seal ring 4, thereby significantly improved its working life.
As shown in Figure 2, after inserted link 1 installs, (said high pressure can be air pressure here in valve body 2, to be filled with high pressure, also can be hydraulic pressure, can be according to the difference of Environmental Conditions and difference, but its sealing effect is all identical), the number range of its high pressure is at 10～50MPa (being equivalent to the pressure of 100～500KG), and the arrow in figure represents that seal ring 4 has been subject to radial and axial pressure.The in the situation that of L1 < L, in the time passing into pressure, pressure can enter along the gap between inserted link 1 and mounting hole, run into the rear change direction of the seal ring 4 being fitted on mounting hole inwall, changing the nyctitropic while, with the axial dynamic seal ring 4 of trying hard to recommend, making the tightr of laminating between seal ring 4 and seal ring 4, meanwhile, 4 of the seal rings of the top seal laminating closely with seal groove 3; When pressure enter into seal groove 3 interior after, because seal ring 4 is Spielpassung with seal groove 3, pressure will enter between seal ring 4 and seal groove 3 along this gap, because the clearance space between seal ring 4 and seal groove 3 is limited, pressure will soon be full of, pressure now will, with direction crush seal circle 4 radially, more fit tightly the collar wall of seal ring 4 and the inwall of mounting hole, and the tightness degree of its laminating depends on the size of pressure; The in the situation that of L1=L, due to the existence of seal ring 4 tension force own, seal ring 4 is the trend in expanding outwardly all the time, and while passing into pressure at this moment, pressure can preferentially be selected to exert pressure along the tension direction of seal ring 4, and like this, the pressure passing into can preferentially be selected to enter between seal ring 4 and seal groove 3, like this, it is identical when the situation of seal ring 4 in the time sealing is just with L1 < L.
Mode of execution two to four: Fig. 3～5 are all that the utility model pressure-driven formula sealing configuration is applied in the application in natural gas equipment, and use relevant parts mainly to form (the air filling gun head 6 in figure is equivalent to a kind of inserted link of mode of execution 1) by valve component 5 and air filling gun head 6 to seal ring 4, route when rock gas that arrow refers in figure in air filling gun head 6 is filled with, and sealing between air filling gun head 6 and valve component 5 realizes sealing by the seal ring 4 of air outlet hole 7 both sides entirely; In these three accompanying drawings, seal ring 4 is subject to pressure axially and radially simultaneously, and wherein, the size that in same accompanying drawing, seal ring 4 is under pressure is to represent by the length of arrow.
In Fig. 3, in same seal groove 3, be provided with a seal ring 4, the axial pressure that sealing circle 4 is subject to is identical with radial pressure, and while carrying out aerating operation, seal ring 4 is the side to seal groove 3 by pressure extrusion, after being squeezed, can there is cutting to a certain degree, and this cutting can make seal ring 4 working life be subject to certain impact, but in general, more than can also reaching half a year its working life, its reason is: in the process plugging at air filling gun head 6, seal ring 4 is the cuttings that can not be squeezed, particular content as described in embodiment 1, do not repeat to repeat at this.
In Fig. 4, in same seal groove 3, be provided with two seal rings 4, the radial pressure that these two seal rings 4 are subject to is identical, but axial pressure difference; As shown in the figure, the axial pressure maximum that the seal ring 4 of pressurized is subject at first, then the suffered pressure of seal ring 4 can significantly reduce, like this, the degree that a rear seal ring 4 is extruded distortion is little, and it is subject to 3 mouthfuls of seal grooves and locates the cutting of rib and just significantly reduce, further improve the working life of seal ring 4, calculate after testing, two seal rings 4 are set seal groove 3 is interior, can reach its working life more than 1 year; And in the plug process of air filling gun head 6, seal ring 4 is the cuttings that can not be squeezed, concrete reason is described above.
In Fig. 5, in same seal groove 3, be provided with three seal rings 4, the radial pressure being subject at three seal rings 4 is identical, and axial pressure is successively decreased, specifically, the pressure maximum that the seal ring 4 of pressurized bears at first, the pressure that middle seal ring 4 is subject to is less than the suffered pressure of previous seal ring 4, the 3rd the pressure minimum that seal ring 4 is subject to; In the time of aerating operation, the 3rd seal ring 4, without obviously distortion, also just said, the 3rd seal ring 4 can, not because extruding cutting affects its working life, therefore, calculate after testing, three seal rings 4 are set seal groove 3 is interior, more than a year and a half can being reached its working life; And in the plug process of air filling gun head 6, seal ring 4 is the cuttings that can not be squeezed, concrete reason is described above.
In sum, when seal groove 3 is interior when plural seal ring 4 is set, the direction that air pressure can be arranged with seal ring 4 is successively decreased, and the pressure that the seal ring 4 fitting with seal groove 3 sidewalls is received can reduce greatly, thereby ensures that it has good working life; In the time that three seal rings 4 are set, its sealing effect and working life reach peak value, as the best, if arrange more than four, its effect is identical with the effect that three seal rings 4 are set, if continue to increase the number of seal ring 4, only can make its cost increase, and without other gain effects.
Certainly, the present embodiment has just been enumerated the use of the utility model pressure-driven formula sealing configuration in aerating equipment, in addition, also can be used in the sealing of gas under other hyperbaric environments or liquid, concrete Environmental Conditions, changes according to the difference of user demand.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a pressure-driven formula sealing configuration, by coordinating inserted link and the valve body of pegging graft to form, on described inserted link, have seal groove, in sealing groove, be provided with the seal ring using under hyperbaric environment, described inserted link and valve body seal by seal ring, it is characterized in that: described seal ring and seal groove Spielpassung, the inner ring wall of seal ring and the distance of seal groove bottom surface be L; In the time that inserted link is not pegged graft with valve body, the distance between the collar wall of seal ring and the inwall of valve body mounting hole is L1, and L1≤L.
2. pressure-driven formula sealing configuration according to claim 1, is characterized in that: described inserted link and valve body are Spielpassung.
3. pressure-driven formula sealing configuration according to claim 1, is characterized in that: the seal ring number in same seal groove is more than one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402784.6U CN204004669U (en) | 2014-07-21 | 2014-07-21 | Pressure-driven formula sealing configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402784.6U CN204004669U (en) | 2014-07-21 | 2014-07-21 | Pressure-driven formula sealing configuration |
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| Publication Number | Publication Date |
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| CN204004669U true CN204004669U (en) | 2014-12-10 |
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| CN201420402784.6U Active CN204004669U (en) | 2014-07-21 | 2014-07-21 | Pressure-driven formula sealing configuration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075010A (en) * | 2014-07-21 | 2014-10-01 | 余姚凯登机电数控有限公司 | Pressure-driven type sealing structure |
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2014
- 2014-07-21 CN CN201420402784.6U patent/CN204004669U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075010A (en) * | 2014-07-21 | 2014-10-01 | 余姚凯登机电数控有限公司 | Pressure-driven type sealing structure |
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