CN102305321A - Flange seal ring - Google Patents
Flange seal ring Download PDFInfo
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- CN102305321A CN102305321A CN201110300728A CN201110300728A CN102305321A CN 102305321 A CN102305321 A CN 102305321A CN 201110300728 A CN201110300728 A CN 201110300728A CN 201110300728 A CN201110300728 A CN 201110300728A CN 102305321 A CN102305321 A CN 102305321A
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- seal
- flange
- annular groove
- sealing
- flange seal
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Abstract
The invention discloses a flange seal ring and belongs to the technical field of railway trucks. The inner ring of the flange seal ring is an inner cylinder locating surface, and air guidance grooves are evenly distributed on the inner cylinder locating surface; the air guidance grooves and a seal clearance ring groove are connected and communicated; and the seal clearance ring groove and a lip seal layer are connected and communicated. The flange seal ring provided by the invention has the advantages that a flange joint can keep good seal effect under the extreme severe working condition such as brake line deflexion, flange transformation, fastening bolt looseness and like, the flange seal ring has the advantages of strong seal compatibility and high reliability, and the vehicle operation safety is improved.
Description
Technical field
The invention belongs to the railway freight-car technical field, be specifically related to a kind of railway freight-car braking line flanged joint seal arrangement special sealing ring that is used for.
Background technique
For a long time; The former design flange of railway freight-car wind braking pipe arrangement connects seal form and structure has guaranteed that preferably the static air pressure of braking pipe arrangement seals; But because China is vast in territory; Span big, reasons such as range of temperature big, circumstance complication in railway operation zone still exist a large amount of braking pipe arrangement leakage problem in the vehicle operating, particularly under the cold operation state, sew comparatively outstanding.
It is the key factor that jeopardizes traffic safety that braking pipe arrangement is sewed.Goods train vehicle wind braking system has strict requirement to the leak volume of Sealing and braking pipe arrangement, and leak volume is excessive to cause the parking accident easily, thereby influences train operating safety, reduces conveying efficiency.Along with the heavy duty and the fast development of fast goods train of growing up, the braking pipe arrangement sealability is grown up heavily loaded and fast goods train seems particularly important for guaranteeing that safety is started.
The flange interconnection technique used for two more than ten years so far, had obtained effect preferably, but also manifested simultaneously the deficiency of himself gradually, flanged joint in utilization, all have throughout the year sew, particularly comparatively serious in the winter time, even therefore can't dispatch a car.Existing flanged joint sealing configuration is perfect not to the utmost, and sealability can not satisfy usage requirement fully, is necessary the joint seal of flanges technology is done further research and improvement, guarantees that the braking pipe arrangement sealing is reliable, guarantees train operating safety.
Summary of the invention
The objective of the invention is provides a kind of flange seal circle for addressing the above problem; The sealing circle can make under the exceedingly odious operating modes such as flanged joint becomes flexible at Brake pipe deflection, flange distortion, clamping bolt, low temperature and still keep good sealing effect; Seal compatibility is strong, reliability is high, improves the vehicle operating Security.
The technological scheme that the present invention adopted is:
A kind of flange seal circle, said flange seal circle inner ring is interior cylinder locating face, said in the cylinder locating face gas guide groove that evenly distributes, said gas guide groove is connected with the seal clearance annular groove and communicates, said seal clearance annular groove is connected with the lip seal layer and communicates.
Preferably, the quantity of said gas guide groove is four.
Further, said seal clearance annular groove is made up of last seal clearance annular groove and lower seal gap annular groove.
Further, said upward seal clearance annular groove and lower seal gap annular groove are symmetrical.
Further, said lip seal layer is made up of last lip sealing layer and following lip sealing layer.
Further, said upward lip sealing layer is symmetrical with following lip sealing layer.
Preferably, the section of said flange seal circle is the W type.
The present invention has the following advantages:
(1) this apparatus structure is simple, and is easy to assembly, economical and practical, can satisfy the requirement of railway vehicle wind braking pipe arrangement to sealing reliability, and very big application prospect is arranged.
(2) through using the sealing circle, can make flanged joint under exceedingly odious operating modes such as Brake pipe deflection, flange distortion, clamping bolt become flexible, still keep good sealing effect, seal compatibility is strong, reliability is high, improves the vehicle operating Security.
(3) sealing circle section is a W shape, and its section of working state is a rectangle after compression, have sealing surface big, can anti-bigger sealing load, easy processing, to antithesis accessory and the relatively low advantage of self required precision.
(4) sealing circle decrement is reasonable in design, when the fittings body maximum deflection, still keeps enough seal ring pressure amounts, has improved sealing reliability.
(5) be provided with gas guide groove, the working state lower seal radially can become greatly by compression, thereby can produce the power of necessarily holding tightly to the center sealed pipe, and may make it can not import to upper and lower layer position, lip limit preferably this moment to being exerted an influence by the importing of sealing gas.For guaranteeing that upper and lower lip limit can open smoothly, be provided with the gas guide groove of up/down perforation, got into the bottom of sealing circle by the sealing load air, the seal action that is brought into normal play in upper and lower lip limit prevents to sew.
(6) adopt upper and lower symmetrical inclined-plane " active reaction " lip seal layer.Deform or clamping bolt when loosening at flanged joint; Can utilize inner gas guide groove pressed gas to be imported the twice annular groove of upper and lower symmetric design; Upper and lower symmetrical inclined-plane lip seal layer is opened in pressure effect through sealing gas; Form new sealing at position, flange seal gap, thereby realized the automatic compensation sealing effect.
(7) W shape seal ring has sealing of pressure amount and the dual performance of active selfsealings, can make under the exceedingly odious operating modes such as flanged joint becomes flexible at Brake pipe deflection, flange distortion, clamping bolt, low temperature still to keep good sealing effect.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further.
The structural representation of a kind of flange seal circle that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the A-A sectional structure schematic representation among Fig. 1;
The scheme of installation of a kind of flange seal circle that Fig. 3 provides for the embodiment of the invention.
Embodiment
The section of this flange seal circle is the W type.See figures.1.and.2, inner ring is interior cylinder locating face 4.Interior cylinder locating face is four gas guide grooves 1 of distribution evenly.Gas guide groove 1 is connected with lower seal gap annular groove 3 with last seal clearance annular groove 2 and connects.Last seal clearance annular groove 2 is symmetrical with lower seal gap annular groove 3.Last seal clearance annular groove 2 is connected with lip seal layer 5 with lower seal gap annular groove 3 and communicates.Lip seal layer 5 is made up of last lip sealing layer and following lip sealing layer.Deform or clamping bolt when loosening at flanged joint; The sealing circle can utilize inner gas guide groove 1 that pressed gas is imported symmetrical last seal clearance annular groove 2 and lower seal gap annular groove 3; To go up the lip sealing layer, descend lip sealing layer 5 to open through the pressure effect of sealing gas; Form new sealing at last seal clearance annular groove 2 with annular groove 3 positions, lower seal gap; Thereby realized the automatic compensation sealing effect, realized the double seal function of sealing of sealing circle pressure amount and active self compensation sealing.Therefore the sealing circle still keeps good sealing effect under exceedingly odious operating modes such as Brake pipe deflection, flange distortion, clamping bolt become flexible, and can effectively guarantee braking line joint seal of flanges performance, ensures train operating safety.The decrement of sealing circle is 2.25mm; Compressibility is 30%; When deflection angle being installed when maximum between flange body and the fittings body, seal ring along the circumferential direction pressure amount still remains with the decrement of minimum 1.99mm, can avoid braking line to sew the generation of fault preferably.
With reference to Fig. 3, the installation and application of sealing circle: cylinder locating face 4 is sleeved on the fittings body external cylindrical surface 6 at first the sealing circle being relied on, then with the fittings body 7 of two Brake pipe adpting flanges and fittings body 8 axial alignment of flange; Lean on last two flange bodies 9 again; Requirement by regulation moment replaces fastening two groups of connecting bolts 10, makes flange facing 11 compress seal ring, and seal ring produces elasto plastic deformation; Fill up on the flange facing because the slit of the uneven formation of microcosmic such as processing roughness; And will produce the sealing impacting force from the fit sealing propagation of pressure of flange bolt 10 to the flange facing that is in contact with it 11, reach pressure-tight effect.
It should be noted last that; Above embodiment is only unrestricted in order to technological scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technological scheme of the present invention; And not breaking away from the spirit and the scope of technological scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. flange seal circle; It is characterized in that said flange seal circle inner ring is interior cylinder locating face, said in the cylinder locating face gas guide groove that evenly distributes; Said gas guide groove is connected with the seal clearance annular groove and communicates, and said seal clearance annular groove is connected with the lip seal layer and communicates.
2. flange seal circle according to claim 1 is characterized in that, the quantity of said gas guide groove is four.
3. flange seal circle according to claim 1 is characterized in that, said seal clearance annular groove is made up of last seal clearance annular groove and lower seal gap annular groove.
4. flange seal circle according to claim 3 is characterized in that, said upward seal clearance annular groove and lower seal gap annular groove are symmetrical.
5. flange seal circle according to claim 1 is characterized in that, said lip seal layer is made up of last lip sealing layer and following lip sealing layer.
6. flange seal circle according to claim 5 is characterized in that, said upward lip sealing layer is symmetrical with following lip sealing layer.
7. according to any described flange seal circle of claim 1 to 6, it is characterized in that the section of said flange seal circle is the W type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300728A CN102305321A (en) | 2011-09-27 | 2011-09-27 | Flange seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300728A CN102305321A (en) | 2011-09-27 | 2011-09-27 | Flange seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102305321A true CN102305321A (en) | 2012-01-04 |
Family
ID=45379213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110300728A Pending CN102305321A (en) | 2011-09-27 | 2011-09-27 | Flange seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102305321A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059816A (en) * | 2022-06-02 | 2022-09-16 | 眉山中车制动科技股份有限公司 | Active sealing structure of E-shaped sealing ring and sealing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006107798A1 (en) * | 2005-04-04 | 2006-10-12 | Corrosion Control Corp. D/B/A Pikotek | Isolation gasket, system and method of manufacture |
| CN201259043Y (en) * | 2008-09-10 | 2009-06-17 | 叶老彪 | Pipeline flange gasket |
| CN201964068U (en) * | 2011-03-01 | 2011-09-07 | 四川制动科技股份有限公司 | Seal ring |
| CN202252478U (en) * | 2011-09-27 | 2012-05-30 | 南车长江车辆有限公司 | Flange sealing ring |
-
2011
- 2011-09-27 CN CN201110300728A patent/CN102305321A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006107798A1 (en) * | 2005-04-04 | 2006-10-12 | Corrosion Control Corp. D/B/A Pikotek | Isolation gasket, system and method of manufacture |
| CN201259043Y (en) * | 2008-09-10 | 2009-06-17 | 叶老彪 | Pipeline flange gasket |
| CN201964068U (en) * | 2011-03-01 | 2011-09-07 | 四川制动科技股份有限公司 | Seal ring |
| CN202252478U (en) * | 2011-09-27 | 2012-05-30 | 南车长江车辆有限公司 | Flange sealing ring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059816A (en) * | 2022-06-02 | 2022-09-16 | 眉山中车制动科技股份有限公司 | Active sealing structure of E-shaped sealing ring and sealing method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120104 |