CN203023509U - Dual-sealing element - Google Patents
Dual-sealing element Download PDFInfo
- Publication number
- CN203023509U CN203023509U CN 201320008832 CN201320008832U CN203023509U CN 203023509 U CN203023509 U CN 203023509U CN 201320008832 CN201320008832 CN 201320008832 CN 201320008832 U CN201320008832 U CN 201320008832U CN 203023509 U CN203023509 U CN 203023509U
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- China
- Prior art keywords
- seal
- area
- spool
- sealing
- locking nut
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Abstract
The utility model discloses a dual-sealing element. The dual-sealing element comprises a valve core and a valve base, wherein the valve core comprises a sealing zone and a fastening zone; the circumferential diameter of the sealing zone is lower than that of the fastening zone; a sealing ring is arranged on the periphery of the sealing zone, and the sealing ring is protruded out of the sealing zone; and a distance between the sealing ring and the port of the sealing zone is 1/5-4/5 of the length of the sealing zone. According to the sealing element disclosed by the utility model, through the sealing ring on the periphery of the sealing zone of the valve core, based on a characteristic that the sealing ring is protruded out of width of the sealing zone of the valve core, a gap between the valve core and the valve base can be sealed by the sealing ring when the valve core is taken off by a part and a liquid filling passage besides the valve core port is opened, so that the space in the valve core is still under a sealing state while vacuumizing or filling liquid through the liquid filling passage.
Description
Technical field
The utility model relates to the mechanical seal field, especially, relates to a kind of double seal element.
Background technique
Nearly 2 years, when carrying out large megawatt four-point supporting formula wind power generating set design, the vibration damping of gearbox system began to adopt hydraulic spring grease cup.Hydraulic spring grease cup is installed on the both sides of gear-box, and each two of every sides lay respectively at the top and bottom of gear-box reverse arm, and the hydraulic spring grease cup of gear-box one side intersects with the hydraulic spring grease cup of gear-box opposite side by oil pipe and is connected.Hydraulic spring grease cup has the advantages that with respect to conventional rubber spring torsional stiffness is large, vertical stiffness is little, can greatly reduce the constraint of crossing to fan transmission system, and its superior damping capacity can better reduce the nodding of fan engine room simultaneously,
After the wind turbine gearbox hydraulic spring grease cup is installed, need its built-in cavity is vacuumized and topping up, after topping up is complete, then hydraulic spring grease cup is sealed.Before this, be used for the hydraulic spring grease cup of automotive field during fabrication, adopt the whole mode that immerses liquid to get rid of the air of hydraulic spring grease cup inner chamber, carry out simultaneously the can of liquid, after completing fluid injection, realize permanent seal by squeeze into steel ball in the perfusion runner.Because the wind-powered electricity generation hydraulic spring grease cup need to vacuumize and fluid injection after installation again, this mode is also inapplicable.
The model utility content
The utility model purpose is to provide a kind of double seal element, to solve in the technical problem that vacuumizes or topping up stage, system can not seal.The utility model has proposed a kind of double seal element according to use field and the characteristics of product, by the sealing element, has realized by the function of same runner to vacuumizing of carrying out of product and topping up, and by mechanical seal, has guaranteed the reliability of product.
For achieving the above object, the utility model provides a kind of double seal element, comprises spool and valve seat, and described spool comprises seal area and fastening area, and the circumferential diameter of described seal area is less than described fastening area, and described fastening area outer surface is provided with screw thread; Described seal area periphery arranges seal ring, and described seal ring radially protrudes from outside described seal area, and the distance between described seal ring and described seal area port is the 1/5-4/5 of seal area length;
Between the seal area of described spool and described valve seat, the space is set, described gap width is the 1/100-1/5 of seal spool sector width.
Preferably, described seal ring comprises O shape circle and back-up ring.
Preferably, described element also comprises locking nut and the block that is in fastening area, and described locking nut is connected with valve seat by screw thread, and between block and seam, described block is positioned at outside described locking nut.
Preferably, between described locking nut and described spool, the space is set, described gap width is the 1/100-1/5 of spool width.
Preferably, between described locking nut and described block, the space is set, described gap width is the 1/100-1/5 of locking nut length.
Preferably, described seal ring is arranged in the depression of seal area.
Preferably, the distance between described seal ring and described seal area port is 2/3 of seal area length.
Preferably, be provided with implementation of port on described valve seat and described seal spool district surface of contact, described seal ring is arranged between described implementation of port and described fastening area.
Preferably, be provided with concave station at described seal area, described concave station is positioned at the intersection of seal area and fastening area.
The utlity model has following beneficial effect:
1, double seal: utilize the seal ring of seal spool district periphery to protrude from the feature of the width in seal spool district own, can be drawn out of a part at spool, when opening the other topping up passage in spool end, seal ring can close the gap between spool and valve seat, make when not affecting the work of topping up passage, the valve core inside space still is in sealing state;
2, serve as hydraulic switch: when valve core sealed cover did not separate with valve seat, the implementation of port path that leads to closed hole inside was blocked and can't be circulated by spool; With after valve seat separates, the implementation of port path that leads to closed hole inside is opened, the stream Natural communication when valve core sealed cover;
3, automatically adjust: between spool and locking nut, between locking nut and block, all suitable space can be set between seal spool district and valve seat, but make spool, locking nut Automatic Fine Tuning, the coaxiality error that compensation causes because of machining error.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is one of structural profile schematic diagram of the utility model preferred embodiment;
Fig. 2 is the mounting structure generalized section of the utility model preferred embodiment;
Fig. 3 be the utility model preferred embodiment the structural profile schematic diagram two;
Fig. 4 is the structural profile partial schematic diagram of the utility model preferred embodiment;
Wherein, 1, valve seat, 2, spool, 3, seam, 4, seal area, 5, fastening area, 6, seal ring, 7, locking nut, 8, block, 9, implementation of port, 10, the topping up passage, 11, screw thread, 12, screw, 13, seal area port, 14, concave station, 15, space one, 16, space two, 17, space three.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the utility model can be implemented according to the multitude of different ways that claim limits and covers.
Referring to Fig. 1, Fig. 2, a kind of double seal element comprises spool 2 and valve seat 1, and described spool 1 comprises seal area 4 and fastening area 5, and the circumferential diameter of described seal area 4 is less than described fastening area 5, and fastening area can fill up the outer end of closed hole.The surface of described fastening area 5 peripheries is provided with screw thread 11, is used for and being connected of valve seat 1.And, leave the space at the closed hole interior periphery, for what vacuumize with topping up.
Described seal area 4 peripheries arrange seal ring 6, and described seal ring 6 radially protrudes from outside described seal area 4, can be always the closed hole at seal ring 6 places, planes, place be filled up, and reach sealing effect.
Distance between described seal ring 6 and described seal area port one 3 is the 1/5-4/5 of seal area 4 length, according to the actual requirements and environmental selection.The outer surface of seal area port one 3 can be the conical surface, sphere, plane or other shapes, under the prerequisite that the corresponding part of energy valve seat 1 can fit tightly, does not affect the realization of the present embodiment.
Between the seal area 4 of spool 2 and described valve seat 1, space 1 can be set, described gap width can be the 1/100-1/5 of seal area 4 width of spool 2, makes the liquid that flows into from the topping up path 10 to enter into closed hole inside by implementation of port 9 and this space.
Open the utility model double seal element, the forward end seal district port one 3 of spool 2 separates with valve seat 1, and seal ring 6 still can provide sealing, at this moment, connect special device for casting in implementation of port 9, by the gap between topping up path 10 and seal area 4 and valve seat 1, sealing system is vacuumized and topping up.Close double seal element described in the utility model, and the screw thread 13 of fastening area 5 is applied certain moment, seal area 4 is coordinated with valve seat, form mechanical seal, can bear for a long time higher working pressure, reach good sealing effect.
Preferably, seal ring 6 can comprise O shape circle and back-up ring, does not affect the utility model embodiment's realization.
The utility model seal element can be split-type structural, also comprise the locking nut 7 and the block 8 that are in fastening area 5, described locking nut 7 is connected with valve seat 1 by screw thread 11, between block 8 and seam 3, described block 8 is positioned at described locking nut 7 outsides, the activity of limitation lock jack panel 7.
Can be the machinery suit between block 8 and spool 2, can be also to have flexible block 8 to embed spool 2 by the groove on spool 2, or other Placements, do not affect the utility model embodiment's realization.
After locking nut 7 is back-outed suitable distance, sealing surface 13 separates with valve seat 1, and seal ring 6 still can be realized sealing, at this moment, connect special device for casting in implementation of port 9, by the gap between topping up path 10 and seal area 4 and valve seat 1, sealing system is vacuumized and topping up.After completing topping up, tighten locking nut 7, locking nut 7 applies active force on seam 3, promotes spool 2 and advances, and sealing surface 13 and valve seat 1 are matched, and forms mechanical seal.
Between locking nut 7 and described spool 2, space 2 16 can be set, described gap width is the 1/100-1/5 of spool 2 width; Make the spool 2 can Automatic Fine Tunings, the valve seat 1 that compensation causes because of machining error and the coaxiality error of seal element.
Between locking nut 7 and described block 8, space 3 17 can be set, described gap width is the 1/100-1/5 of locking nut 7 length; Make locking nut 7 slightly to move along the axial of seal element spool 2.
Distance between seal ring 6 and described seal area port one 3 is 2/3 of seal area length, the seal area 4 that makes spool 2 outwards the hydrodynamic reciprocating sealing section length 1/3 after, closed hole still keeps sealing state.
Be provided with implementation of port 9 on described valve seat 1 and described spool 2 seal area 4 surface of contact, described seal ring 6 is arranged between described implementation of port 9 and described fastening area 5.
Can be provided with concave station 14 at described seal area 4, described concave station 14 is positioned at the intersection of seal area 4 and fastening area 5, reduces the area that coordinates of spool and valve body, the risk that reduction spool and valve body are interfered mutually.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a double seal element, comprise spool and valve seat, it is characterized in that, described spool comprises seal area and fastening area, and the circumferential diameter of described seal area is less than described fastening area, and described fastening area outer surface is provided with screw thread; Described seal area periphery arranges seal ring, and described seal ring radially protrudes from outside described seal area, and the distance between described seal ring and described seal area port is the 1/5-4/5 of seal area length;
Between the seal area of described spool and described valve seat, the space is set, described gap width is the 1/100-1/5 of seal spool sector width.
2. a kind of double seal element according to claim 1, is characterized in that, described seal ring comprises O shape circle and back-up ring.
3. a kind of double seal element according to claim 1, it is characterized in that, described element also comprises locking nut and the block that is in fastening area, and described locking nut is connected with valve seat by screw thread, between block and seam, described block is positioned at outside described locking nut.
4. a kind of double seal element according to claim 3, is characterized in that, between described locking nut and described spool, the space is set, and described gap width is the 1/100-1/5 of spool width.
5. a kind of double seal element according to claim 3, is characterized in that, between described locking nut and described block, the space is set, and described gap width is the 1/100-1/5 of locking nut length.
6. the described a kind of double seal element of according to claim 1 to 5 any one, is characterized in that, described seal ring is arranged in the depression of seal area.
7. the described a kind of double seal element of according to claim 1 to 5 any one, is characterized in that, the distance between described seal ring and described seal area port is 2/3 of seal area length.
8. the described a kind of double seal element of according to claim 1 to 5 any one, is characterized in that, is provided with implementation of port on described valve seat and described seal spool district surface of contact, and described seal ring is arranged between described implementation of port and described fastening area.
9. the described a kind of double seal element of according to claim 1 to 5 any one, is characterized in that, be provided with concave station at described seal area, described concave station is positioned at the intersection of seal area and fastening area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008832 CN203023509U (en) | 2013-01-08 | 2013-01-08 | Dual-sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008832 CN203023509U (en) | 2013-01-08 | 2013-01-08 | Dual-sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023509U true CN203023509U (en) | 2013-06-26 |
Family
ID=48647496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320008832 Expired - Lifetime CN203023509U (en) | 2013-01-08 | 2013-01-08 | Dual-sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448719A (en) * | 2017-09-28 | 2017-12-08 | 丁毅 | Air sac sealing formula ball joint compensator |
-
2013
- 2013-01-08 CN CN 201320008832 patent/CN203023509U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448719A (en) * | 2017-09-28 | 2017-12-08 | 丁毅 | Air sac sealing formula ball joint compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |