CN103883730A - Combination sealing piece - Google Patents
Combination sealing piece Download PDFInfo
- Publication number
- CN103883730A CN103883730A CN201410091428.1A CN201410091428A CN103883730A CN 103883730 A CN103883730 A CN 103883730A CN 201410091428 A CN201410091428 A CN 201410091428A CN 103883730 A CN103883730 A CN 103883730A
- Authority
- CN
- China
- Prior art keywords
- extrusion
- type part
- cross
- section
- force
- 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
Links
Images
Landscapes
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
A combination sealing piece comprises a Y-shaped piece with the cross section in a Y shape and a squeezing piece matched with the Y-shaped piece. The cross section of the Y-shaped piece comprises a fixing block and two stress blocks fixed on the fixing block. The horizontal width of the fixing block is larger than the horizontal width of the stress blocks. The two stress blocks are connected at the fixing block to form a fork opening. The squeezing piece is in contact with the Y-shaped piece. Under the effect of external force, the fork opening of the Y-shaped piece is expanded through the squeezing piece. The combination sealing piece has the advantages of being long in service life and convenient to maintain.
Description
Technical field
The present invention is a kind of Sealing for sealing, particularly a kind of Sealing of combination.
Background technique
Existing Sealing is all single, the most frequently used is the rubber seal of O type, but in routine use process, particularly on main equipment, single seal durability is long, the repair and replacement utmost point is very difficult again, taking Hydropower Unit as example, the top cover of Hydropower Unit and seat ring sealing adopt the rubber seal of O type, after operation a period of time, there is water leakage phenomenon in top cover and sealing, and water leakage increases, bring pressure to head cover drainage, affect security of operation, change and once need whole Sealing all to roll over and remove, time-consuming, effort.
The reason that affects group of motors seal life through long-term observation mainly contains following two reasons, and the one, sealing groove width inequality, sealing ditch degree of finish that seat ring and top cover form are inadequate, cause " O " type sealing precompression little; The 2nd, when unit operation, before movable guide vane, variation in water pressure changes greatly Sealing impact force more greatly.
Summary of the invention
For above-mentioned technical problem, this use invention provides the combination seal of a kind of long service life, convenient for maintaining.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of combination seal comprises the extrusion that cross section is the Y type part of " Y type ", matches with Y type part;
The cross section of Y type part comprises fixed block and is fixed on two force blocks on fixed block, and fixed block horizontal width is greater than force block horizontal width, and two force blocks are at the fixed block formation prong that is connected;
Extrusion contacts with Y type part, and extrusion expands the prong of Y type part under external force.
All right, the cross section of extrusion is dumbbell-like shape, and two ends of extrusion dumbbell-like shape are spherical to contact with a force block respectively.
All right, the cross section of extrusion is circular or oval.
All right, the cross section of extrusion is triangle, and the leg-of-mutton angle of extrusion is stretched in prong.
All right, the cross section of extrusion is also " Y type ", and extrusion is identical with Y type part structure, and two " Y type ", also can be described as " X-type ".
The invention has the beneficial effects as follows, adopt the present invention, taking Large Hydropower Station as example, Y type part is fixed in seal groove in advance, and extrusion is subject to the extruding of the sealer matching with seal groove to contact and push Y type part with Y type part, and the prong expansion of Y type part is full of seal groove, eliminate the impact of sealing groove width inequality on Sealing, when water pressure changes, stressed the changing of Y type part and extrusion surface of contact can overcome, thus the working life of significantly improving combination seal; Y type part is fixed, and extrusion is realized sealing with Y type part under the extruding of sealer, the stressed maximum of extrusion, and the life-span, far below Y type part, as long as change extrusion, has greatly shortened engineering time in regular maintenance.
Separately in novel seal assembly parts, the prong of Y type part and extrusion contact can form one or more air passageways (according to different combination forms), in this air passageways, gas pressure intensity P1 is that a standard atmospheric pressure is 1.013 × 105 Pascals, in the time that external environment condition is a standard atmospheric pressure or negative pressure, internal pressure P1 is more than or equal to external pressure P2, and therefore internal pressure plays a protective role to Sealing; In the time being full of liquid in external environment condition; there is a pressure difference Δ P with seal assembly internal pressure P1 in the pressure P 2 of this liquid; in the time that external pressure P2 is greater than internal pressure P1; this pressure difference Δ P will be applied on sealer; the inevitable impact that also can be subject to this pressure difference Δ P of extrusion; having one or more pressure because assembly parts is inner is the gas channel of a normal atmospheric pressure, has reduced the outside active force P2 that imposes on sealer, plays certain protective action.Improve the working life of Sealing, greatly shortened engineering time, from actual applicable cases rough estimates, originally needed some months just need to seal replacing, can bring up to now several years, increased certain economic benefit simultaneously.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is Y type part structural representation of the present invention.
Fig. 2 is first embodiment of the invention schematic diagram.
Fig. 3 is that first embodiment of the invention is installed stress deformation schematic diagram.
Fig. 4 is second embodiment of the invention schematic diagram.
Fig. 5 is third embodiment of the invention schematic diagram.
Fig. 6 is fourth embodiment of the invention schematic diagram.
In figure: 1Y type part, 2 extrusions, 3 prongs, 4 fixed blocks, 5 force blocks, 6 air passagewayss.
Embodiment
Embodiment one, and as shown in Figure 1, Figure 2, a kind of combination seal comprises the extrusion 2 that cross section is the Y type part 1 of " Y type ", matches with Y type part 1;
The cross section of Y type part 1 comprises fixed block 4 and is fixed on two force blocks 5 on fixed block 4, and fixed block 4 horizontal widths are greater than force block 5 horizontal widths, and two force blocks 5 are connected and form prong 3 at fixed block 4;
The cross section of extrusion 2 is dumbbell-like shape, and two ends of extrusion 2 dumbbell-like shapes are spherical to contact with a force block 5 respectively, and extrusion 2 expands the prong 3 of Y type part 1 under external force.
As Fig. 3, by the fixed block 4 of Y type part 1, towards sealed groove bottom, segmentation is pressed in groove, allows the fixed block 4 of Y type part 1 be adjacent to channel bottom.Can be in groove in installation process apply grease, reduce surface friction drag.Dumbbell-like shape circle interface position is installed again, under external pressure, make the interface position of extrusion 2 dumbbell-like shapes enter completely in groove, keep good combination, at air passageways 6 of the interior formation of prong 3, and fit with Y type part 1 (prong 3 of extrusion 2 dumbbell-like shape interfaces and Y type part 1 stagger at least 90 degree).
Embodiment two, and as Fig. 1, Fig. 4, a kind of combination seal comprises the extrusion 2 that cross section is the Y type part 1 of " Y type ", matches with Y type part 1;
The cross section of Y type part 1 comprises fixed block 4 and is fixed on two force blocks 5 on fixed block 4, and fixed block 4 horizontal widths are greater than force block 5 horizontal widths, and two force blocks 5 are connected and form prong 3 at fixed block 4;
The cross section of extrusion 2 is circular or oval, and extrusion 2 contacts with two force blocks 5, and extrusion 2 expands the prong 3 of Y type part 1 under external force.
Embodiment three, and as Fig. 1, Fig. 5, a kind of combination seal comprises the extrusion 2 that cross section is the Y type part 1 of " Y type ", matches with Y type part 1;
The cross section of Y type part 1 comprises fixed block 4 and is fixed on two force blocks 5 on fixed block 4, and fixed block 4 horizontal widths are greater than force block 5 horizontal widths, and two force blocks 5 are connected and form prong 3 at fixed block 4;
The cross section of extrusion 2 is triangle, and the leg-of-mutton angle of extrusion 2 is stretched in prong 3, and extrusion 2 expands the prong 3 of Y type part 1 under external force.
Embodiment four, and as Fig. 1, Fig. 6, a kind of combination seal comprises the extrusion 2 that cross section is the Y type part 1 of " Y type ", matches with Y type part 1;
The cross section of Y type part 1 comprises fixed block 4 and is fixed on two force blocks 5 on fixed block 4, and fixed block 4 horizontal widths are greater than force block 5 horizontal widths, and two force blocks 5 are connected and form prong 3 at fixed block 4;
The cross section of extrusion 2 is also " Y type ", and extrusion 2 is identical with Y type part 1 structure, forms double-Y shaped sealing group, when work by the force block 5 of one towards sealed groove bottom, push another force block 5, the prong 3 of putting into sealed groove Y type part 1 expands.
Structure in this example is only for for the illustrating and explaining of claim, so that popular reading comprehension should not be considered as the restriction for claim, scope and legal equivalent feature that protection scope of the present invention should be recorded with claim be as the criterion.
Claims (5)
1. a combination seal, is characterized in that: described combination seal comprises the extrusion (2) that cross section is the Y type part (1) of " Y type ", matches with Y type part (1);
The cross section of described Y type part (1) comprises fixed block (4) and is fixed on two force blocks (5) on fixed block (4), fixed block (4) horizontal width is greater than force block (5) horizontal width, and two force blocks (5) are connected and form prong (3) at fixed block (4);
Described extrusion (2) contacts with Y type part (1), and extrusion (2) expands the prong (3) of Y type part (1) under external force.
2. a kind of combination seal according to claim 1, is characterized in that: the cross section of described extrusion (2) is dumbbell-like shape, and two ends of extrusion (2) dumbbell-like shape are spherical to contact with a force block (5) respectively.
3. a kind of combination seal according to claim 1, is characterized in that: the cross section of described extrusion (2) is for circular or oval.
4. a kind of combination seal according to claim 1, is characterized in that: the cross section of described extrusion (2) is triangle, and the leg-of-mutton angle of extrusion (2) is stretched in prong (3).
5. a kind of combination seal according to claim 1, is characterized in that: the cross section of described extrusion (2) is also " Y type ", and extrusion (2) is identical with Y type part (1) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091428.1A CN103883730A (en) | 2014-03-13 | 2014-03-13 | Combination sealing piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091428.1A CN103883730A (en) | 2014-03-13 | 2014-03-13 | Combination sealing piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883730A true CN103883730A (en) | 2014-06-25 |
Family
ID=50952783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410091428.1A Pending CN103883730A (en) | 2014-03-13 | 2014-03-13 | Combination sealing piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883730A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404539A (en) * | 2018-12-29 | 2019-03-01 | 广州市阪上橡胶制品有限公司 | A kind of new type sealing element |
| CN116906580A (en) * | 2023-08-17 | 2023-10-20 | 辽宁浩宇机械制造有限公司 | Adjustable mechanical sealing device for pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19733548C1 (en) * | 1997-08-02 | 1999-02-04 | Kermi Gmbh | Seal of an elastic and magnetic material |
| CN101447414A (en) * | 2008-12-15 | 2009-06-03 | 中国科学院上海技术物理研究所 | Vacuum-resistant and high-pressure resistant movable sealing device with gas protection |
| CN201858353U (en) * | 2010-10-28 | 2011-06-08 | 淄博爱科密封件有限公司 | L-O-combined-shaped sealing part |
| CN202040324U (en) * | 2011-03-24 | 2011-11-16 | 宣城安安橡塑有限责任公司 | Sealing ring with grooves |
| CN202545805U (en) * | 2012-05-10 | 2012-11-21 | 中国长江电力股份有限公司 | Novel top cover and seat ring sealing structure |
| CN203717904U (en) * | 2014-03-13 | 2014-07-16 | 中国长江电力股份有限公司 | Combined sealing element |
-
2014
- 2014-03-13 CN CN201410091428.1A patent/CN103883730A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19733548C1 (en) * | 1997-08-02 | 1999-02-04 | Kermi Gmbh | Seal of an elastic and magnetic material |
| CN101447414A (en) * | 2008-12-15 | 2009-06-03 | 中国科学院上海技术物理研究所 | Vacuum-resistant and high-pressure resistant movable sealing device with gas protection |
| CN201858353U (en) * | 2010-10-28 | 2011-06-08 | 淄博爱科密封件有限公司 | L-O-combined-shaped sealing part |
| CN202040324U (en) * | 2011-03-24 | 2011-11-16 | 宣城安安橡塑有限责任公司 | Sealing ring with grooves |
| CN202545805U (en) * | 2012-05-10 | 2012-11-21 | 中国长江电力股份有限公司 | Novel top cover and seat ring sealing structure |
| CN203717904U (en) * | 2014-03-13 | 2014-07-16 | 中国长江电力股份有限公司 | Combined sealing element |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404539A (en) * | 2018-12-29 | 2019-03-01 | 广州市阪上橡胶制品有限公司 | A kind of new type sealing element |
| CN109404539B (en) * | 2018-12-29 | 2021-07-09 | 广州市阪上橡胶制品有限公司 | Novel sealing element |
| CN116906580A (en) * | 2023-08-17 | 2023-10-20 | 辽宁浩宇机械制造有限公司 | Adjustable mechanical sealing device for pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103883730A (en) | Combination sealing piece | |
| CN203717904U (en) | Combined sealing element | |
| CN107631122A (en) | A kind of novel intelligent plugging device | |
| CN208734516U (en) | A kind of membrane pump fluid end with diaphragm gland | |
| CN203868315U (en) | Double-side positioning sealing ring | |
| CN203686141U (en) | Separated floating seal for work arm of heading machine | |
| CN202911067U (en) | Negative pressure cavity structure of PU foaming mould | |
| CN203836197U (en) | Sealing ring with openings | |
| CN205349689U (en) | Sealing structure of plunger pump | |
| CN205478805U (en) | Sealed screw of manometer | |
| CN204322490U (en) | A kind of discharging structure of plastic pipe extruder vacuum shaping box | |
| CN203578722U (en) | Injection plunger assembly | |
| CN105757258A (en) | Novel large-gap internal expansion type seal | |
| CN204114191U (en) | Novel sealing structure gate valve | |
| CN204153144U (en) | A kind of closure seal ring | |
| CN104441914A (en) | Sealing mechanism for rectangular thin shell bubble removing cavity | |
| CN104047923A (en) | Oil cylinder cap for multiple-sealing oil cylinder | |
| CN202501007U (en) | Novel rubber sealing ring | |
| CN204255473U (en) | A kind of meter-clamping apparatus | |
| CN218470119U (en) | Leakage detection device for gas pipeline | |
| CN204756049U (en) | Take linear sealing safety shut -off valve of direction formula | |
| CN203892298U (en) | Multi-seal oil cylinder | |
| CN204387304U (en) | Sealed shell of tank | |
| CN103511386A (en) | Modified oil cylinder | |
| CN204140140U (en) | A kind of clamping ring structure obturaged for gas turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140625 |
|
| RJ01 | Rejection of invention patent application after publication |