CN104075010A - Pressure-driven type sealing structure - Google Patents
Pressure-driven type sealing structure Download PDFInfo
- Publication number
- CN104075010A CN104075010A CN201410346145.7A CN201410346145A CN104075010A CN 104075010 A CN104075010 A CN 104075010A CN 201410346145 A CN201410346145 A CN 201410346145A CN 104075010 A CN104075010 A CN 104075010A
- Authority
- CN
- China
- Prior art keywords
- seal ring
- pressure
- seal
- valve body
- sealing
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
- F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
Abstract
The invention relates to a sealing structure for gas or liquid in a high pressure environment, particularly to a pressure-driven type sealing structure, which includes an inserting rod and a valve body that are inserted in a matching manner, wherein a sealing groove is formed in the inserting rod; a seal ring used in a high pressure environment is arranged in the sealing groove; the inserting rod and the valve body are sealed by the seal ring; the seal ring and the sealing groove are in clearance fit; the distance from the inner ring wall of the seal ring to the bottom surface of the sealing groove is L; when the inserting rod is not inserted to the valve body, the distance from the outer ring wall of the seal ring to the inner wall of a mounting hole of the valve body is L1, and the L1 is not greater than L. According to the invention, the structure is very simple, the mounting is very easy, air-entrapping staff feel no obvious resistance when inserting an air-entrapping gun to the valve seat; the sealing effect is good as the sealing effect can be improved by air pressure or hydraulic pressure, and the sealing manner is unique; the service life is long, and the sealing structure can be continuously used for half a year, one year, or even longer than one year according to different configuration manners.
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, and seal ring plays seal action, be to rely on its tension force to realize sealing after becoming an approximate ellipsoidal by extrusion-deformation, 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 when being vehicle aerating is at 20～40Mpa, the pressure that is equivalent to 200～400KG, seal ring when making is in working order very easily because there is secondary deformation in high pressure like this, 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, the phenomenon that has so just occurred extruding cutting, destroyed the structure of seal ring, the sealing effect of seal ring is declined.
In addition, when 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 when 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, at air filling gun head, be inserted into after valve component, the extrusion of seal ring ability, rely on its tension force to realize sealing, as shown in Figure 8, and when 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 when 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, aerating person for gas station, work the most frequently every day is exactly to change seal ring, and when 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 guarantee 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.
Summary of the invention
The technical problem that one, will solve
The object of the invention is for the existing the problems referred to above of prior art, 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, pressure-driven formula sealing configuration of the present invention, 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; When 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, beneficial effect of the present invention
Structure is very simple, very light during installation, and aerating person, when air filling gun head is inserted in valve seat, can experience without obvious resistance; Good sealing effect, the pressure by air pressure or hydraulic pressure self improves sealing effect, and mode is unique; 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.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that inserted link of the present invention does not insert valve body;
Fig. 2 is the free-body diagram of pressure-driven formula sealing configuration when work;
Fig. 3 is that pressure-driven formula sealing configuration of the present invention is applied in the structural representation one in high pressure aerating equipment;
Fig. 4 is that pressure-driven formula sealing configuration of the present invention is applied in the structural representation two in high pressure aerating equipment;
Fig. 5 is that pressure-driven formula sealing configuration of the present invention 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 subject to high pressure distortion that is arranged on;
Fig. 8 is the existing schematic diagram of sealed ring deformation while inserting air filling gun head on valve component.
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, pressure-driven formula sealing configuration of the present invention is described further:
Mode of execution one: as shown in Figure 1, pressure-driven formula sealing configuration of the present invention, 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; When 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, when assembling, inserted link 1 can be inserted into very easily in mounting hole or extract from mounting hole, seal ring 4 and the friction between mounting hole inwall in plug process are very little, be not enough to make seal ring 4 to produce distortion, like this, just avoided the pressurization cutting between seal ring 4 and the rib at 3 mouthfuls of places of seal groove, guaranteed that seal ring 4 breakage can not occur, 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 (pressure that is equivalent to 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, when 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 more fit tightly the collar wall of seal ring 4 and the inwall of mounting hole with direction crush seal circle 4 radially, and the tightness degree of its laminating depends on the size of pressure; The in the situation that of L1=L, existence due to 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, it is identical when like this, the situation of seal ring 4 when sealing is just with L1 < L.
Mode of execution two to four: Fig. 3～5 are all that pressure-driven formula sealing configuration of the present invention is applied in the application in natural gas equipment, and use relevant parts mainly by valve component 5 and air filling gun head 6, to form (the air filling gun head 6 in figure is equivalent to a kind of inserted link of mode of execution 1) to seal ring 4, the 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 of air filling gun head 6 plugs, seal ring 4 is the cuttings that can not be squeezed, particular content as described in embodiment 1, at this, do not repeat to repeat.
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 is different; As shown in the figure, the axial pressure that the seal ring 4 of pressurized is subject to is at first maximum, 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 the just significantly reduction of cutting that 3 mouthfuls of seal grooves are located rib, 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 as mentioned 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 that the seal ring 4 of pressurized bears is at first maximum, and the pressure that middle seal ring 4 is subject to is less than the suffered pressure of previous seal ring 4, and the 3rd pressure that seal ring 4 is subject to is minimum; When 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 as mentioned 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 be successively decreased, and the pressure that the seal ring 4 fitting with seal groove 3 sidewalls is received can reduce greatly, thereby guarantees that it has good working life; When 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 pressure-driven formula sealing configuration of the present invention in aerating equipment, in addition, also can be used in the sealing of gas under other hyperbaric environments or liquid, and concrete Environmental Conditions, changes according to the difference of user demand.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
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; When 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 |
|---|---|---|---|
| CN201410346145.7A CN104075010A (en) | 2014-07-21 | 2014-07-21 | Pressure-driven type sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346145.7A CN104075010A (en) | 2014-07-21 | 2014-07-21 | Pressure-driven type sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104075010A true CN104075010A (en) | 2014-10-01 |
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ID=51596490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410346145.7A Pending CN104075010A (en) | 2014-07-21 | 2014-07-21 | Pressure-driven type sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104075010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081195A (en) * | 2019-06-05 | 2019-08-02 | 成都安迪生测量有限公司 | Spool and air filling gun |
| CN110772409A (en) * | 2017-12-29 | 2020-02-11 | 首都医科大学宣武医院 | Air valve joint of air bag |
| CN113669449A (en) * | 2021-07-15 | 2021-11-19 | 金石机器人银川有限公司 | Sealing loose clamping mechanism for plugging and unplugging filter rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645212A (en) * | 1985-12-20 | 1987-02-24 | Mechanical Technology Incorporated | Seal arrangement |
| DE10004702A1 (en) * | 2000-02-03 | 2001-08-09 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
| CN202691108U (en) * | 2012-07-02 | 2013-01-23 | 余姚凯登机电数控有限公司 | Sealing structure of gas filling gun |
| CN202834739U (en) * | 2012-08-31 | 2013-03-27 | 重庆希克工业自动化设备有限公司 | Air inflation spearhead |
| CN204004669U (en) * | 2014-07-21 | 2014-12-10 | 余姚凯登机电数控有限公司 | Pressure-driven formula sealing configuration |
-
2014
- 2014-07-21 CN CN201410346145.7A patent/CN104075010A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645212A (en) * | 1985-12-20 | 1987-02-24 | Mechanical Technology Incorporated | Seal arrangement |
| DE10004702A1 (en) * | 2000-02-03 | 2001-08-09 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
| CN202691108U (en) * | 2012-07-02 | 2013-01-23 | 余姚凯登机电数控有限公司 | Sealing structure of gas filling gun |
| CN202834739U (en) * | 2012-08-31 | 2013-03-27 | 重庆希克工业自动化设备有限公司 | Air inflation spearhead |
| CN204004669U (en) * | 2014-07-21 | 2014-12-10 | 余姚凯登机电数控有限公司 | Pressure-driven formula sealing configuration |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110772409A (en) * | 2017-12-29 | 2020-02-11 | 首都医科大学宣武医院 | Air valve joint of air bag |
| CN110772409B (en) * | 2017-12-29 | 2021-11-02 | 首都医科大学宣武医院 | Air valve joint of air bag |
| CN110081195A (en) * | 2019-06-05 | 2019-08-02 | 成都安迪生测量有限公司 | Spool and air filling gun |
| CN113669449A (en) * | 2021-07-15 | 2021-11-19 | 金石机器人银川有限公司 | Sealing loose clamping mechanism for plugging and unplugging filter rod |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |
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| RJ01 | Rejection of invention patent application after publication |