CN103759012B - A kind of low leakage combination forming filler of soft graphite - Google Patents
A kind of low leakage combination forming filler of soft graphite Download PDFInfo
- Publication number
- CN103759012B CN103759012B CN201410032825.1A CN201410032825A CN103759012B CN 103759012 B CN103759012 B CN 103759012B CN 201410032825 A CN201410032825 A CN 201410032825A CN 103759012 B CN103759012 B CN 103759012B
- Authority
- CN
- China
- Prior art keywords
- ring
- face
- filler
- adapter ring
- section
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses one and can meet low leakage requirement better, there is relatively stable lasting deformation-compensated ability, filler can be made under less thrust to reach the low leakage combination forming filler of soft graphite of seal request, its key problem in technology is: the cross sectional shape of adapter ring is hexagon, two summits and two summits in outside inside it are connected to parallelogram, respectively with in two of the upper side and lower side, outer dead centre is starting point to intersect the bottom and upper segment of aforementioned parallelogram after deflecting a low-angle inside cross section, constitute the upper both sides of hexagonal cross-section and lower both sides；One end end face of convex adaptation end ring is that plane, the other end are identical with the nose end face of adapter ring and coordinate with the female end end face of adapter ring in use；One end end face of spill adaptation end ring is also that plane, the other end are identical with the female end end face of adapter ring and coordinate with the nose end face of adapter ring in use.
Description
Technical field
The present invention relates to a kind of filler, be specifically related to a kind of low leakage combination forming filler of soft graphite.
Background technology
Filler is all kinds of valve and the indispensable important seal fitting of electronic product, especially flexible graphite packing, owing to it is high temperature resistant, corrosion resistance is good, applies relatively broad.Conventional soft graphite molding filler, cross section is square or rectangle, when being applied to the operating mode that pressure is higher, or external leakage is had very strict requirement, when needing to meet on the product such as nuclear power valve of relevant low fugacity standard-required, owing to its radial deformation capabilities is not enough, coefficient of horizontal pressure is low, it is impossible to fully meet working condition requirement.The low leakage combined stuffing ring of soft graphite occurred for meeting low leakage requirement, own through there being multiple manufacturer production both at home and abroad at present, the cross section of its molding packing ring is generally the profiled-cross-section that shape differs, generally all have and ensure ability than the filler better seal of conventional square or square-section, but owing to the design aspect at profiled-cross-section still has several drawbacks part, it is therefore necessary to made the serviceability of low leakage combined stuffing ring further be promoted by new structural design.
If Fig. 1 is the low leakage combined stuffing ring of a kind of soft graphite that application is more at present, with the low leakage combined stuffing ring of the product QUICKSET9001 of Garlock company of the U.S. for representative, its adapter ring is parallelogram section.The low leakage combination forming filler of Enviroflex500 and GR160 valve stem seal of Flexitallic company of the Tu2Shi U.S., adapter ring and each one of upper and lower end ring, be triangular-section.The low leakage filling-material structure of Fig. 3 also has some manufacturer production both at home and abroad.
The low leakage combined stuffing structure of above-mentioned latter two, there is a common weak point: the tapered ramp being used for increasing packing ring radial deformation capabilities and coefficient of horizontal pressure is monocline face, each inclined-plane uniform contact during compression, the equalized compression of all parts of filler, when inner surface or the outer surface of filler with adjacent parts reach the compression being sufficient for seal request than when pressing, each several part within filler is also provided with higher compressive stres, except adding and compressing the thrust that filler needs, also overdrawed when in filler, outside needs by the compensation ability providing compensation in the middle part of filler after being worn, thus also shorten the service life of filler.
Apply the wide structure shown in Fig. 1, the angle of wedge of upper and lower two end ring differs the relatively big (angle respectively 30 ° and 45 ° such as two angles of wedge of Garlock packing ring with the angle of wedge angle of adapter ring, differ 15 °), its purpose is to increase the follow-up deformation-compensated ability needed when compressing again.Although the gap that filler is formed by this differential seat angle after compressing, deformation space has been reserved thus adding the compensation ability of filler for compressing again of later stage, but result in the compression of three adapter rings unbalanced one compress filler time, the wedge point on the top of the adapter ring of both sides is compressed in advance, block the transmission of the thrust adapter ring to middle part to a certain extent, caused that the usefulness of the adapter ring at middle part can not be not fully exerted.Additionally, the deformation that is made up of this differential seat angle, the size of compensation space, completely by the impact assembling front filler and the gap length of medial and lateral part, when this gap is little, deformation-compensated space can be relatively big, and deform when this gap is bigger compensation space can diminish even after first time compresses deformation-compensated space just oneself through only small or be absent from.
Summary of the invention
In order to overcome the above-mentioned some shortcomings part existing for existing structure, the invention provides and a kind of can meet low leakage better and require, have relatively stable lasting deformation-compensated ability, the low leakage combination forming filler of soft graphite that filler reaches seal request can be made under less thrust.
To achieve these goals, the present invention is by the following technical solutions:
A kind of low leakage combination forming filler of soft graphite, it includes the adapter ring that multiple cross sectional shape is identical, the convex adaptation end ring of one end, the spill adaptation end ring of the other end, its major technique it is critical only that: the cross sectional shape of adapter ring is hexagon, described hexagonal cross-section, two summits and two summits in outside inside it are connected to parallelogram, respectively with in two of upside, outer dead centre is starting point to intersect the top of aforementioned parallelogram after deflecting a low-angle inside cross section, constitute the upper both sides of hexagonal cross-section, again respectively with in two of downside, outer dead centre is starting point to intersect the following of aforementioned parallelogram after deflecting a low-angle inside cross section, constitute the lower both sides of hexagonal cross-section, it is adapter ring with the dish-shaped entity that this hexagonal cross-section is rotarily formed；One end end face of convex adaptation end ring is that plane, the other end are identical with the nose end face of adapter ring and coordinate with the female end end face of adapter ring in use；One end end face of spill adaptation end ring is also that plane, the other end are identical with the female end end face of adapter ring and coordinate with the nose end face of adapter ring in use；The knitting forming filler that adapter ring is the global formation filler being wound around with flexible graphite belt, being molded into, convex adaptation end ring and spill adaptation end ring can be global formation filler, can also weave for soft graphite, be molded into.
In order to improve the serviceability of above-mentioned low leakage combination forming filler, also be appended below technical scheme further: when convex adaptation end ring and spill adaptation end ring adopt flexible graphite belt to be wound around, the global formation filler that is molded into time, the upper and lower end at this low leakage combination forming filler respectively increases the soft graphite knitting forming filler of a circle square or square-section.
In order to improve the serviceability of above-mentioned low leakage combination forming filler, additionally also further additional following technical proposals: adapter ring, convex adaptation end ring, spill adaptation end ring the tip of the acute angle shape angle of wedge adopt fillet or straight angle transition to make described formation obtuse angle, angle of wedge tip.
The invention has the beneficial effects as follows: combined stuffing ring can be made to meet low leakage better and require, have relatively stable lasting deformation-compensated ability, filler can be made to reach seal request under less thrust.
Accompanying drawing explanation
The QUICKSET9001 low leakage combined stuffing ring structure schematic diagram of Garlock company of the Tu1Shi U.S..
The valve stem seal low leakage combination forming filling-material structure schematic diagram of Flexitallic company of the Tu2Shi U.S..
Fig. 3 is the schematic diagram of another structure of existing low leakage combination forming filler.
Fig. 4 is the structural representation of the low leakage combination forming filler that the present invention proposes.
Fig. 5 is the partial enlarged drawing of the low leakage combination forming filler that the present invention proposes.
Fig. 6 is the schematic diagram of the packing ring end face of the low leakage combination forming filler that the present invention proposes.
In figure, 1, convex adaptation end ring；2, adapter ring；3, spill adaptation end ring.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme is further elaborated.
As shown in Figure 4, the concrete structure of the low leakage combination forming filler of a kind of soft graphite being proposed by the invention, it includes spill adaptation end ring (3) of the identical adapter ring of multiple cross sectional shape (2), convex adaptation end ring (1) of one end, the other end.Its main key problem in technology is in that: the cross sectional shape of adapter ring (2) is hexagon, described hexagonal cross-section, and two summits and two summits in outside inside it are connected to parallelogram (see Fig. 5)；The top of aforementioned parallelogram is intersected after deflecting a low-angle inside cross section with two inside and outside summits of upside for starting point respectively, constitute the upper both sides of hexagonal cross-section, with two inside and outside summits of downside for starting point, the following of aforementioned parallelogram is intersected after deflecting a low-angle inside cross section respectively again, constitute the lower both sides (see Fig. 6) of hexagonal cross-section；It is adapter ring (2) with the dish-shaped entity that this hexagonal cross-section is rotarily formed.One end end face of convex adaptation end ring (1) is that plane, the other end are identical with the nose end face of adapter ring (2) and coordinate with the female end end face of adapter ring (2) in use；One end end face of spill adaptation end ring (3) is also that plane, the other end are identical with the female end end face of adapter ring (2) and coordinate with the nose end face of adapter ring (2) in use.Adapter ring (2) is the global formation filler being wound around with flexible graphite belt, being molded into；Convex adaptation end ring (1) and spill adaptation end ring (3) can be wound around the global formation filler (shown in the right figure of Fig. 4) of mold pressing for flexible graphite belt, it is also possible to the knitting forming filler (shown in the left figure of Fig. 4) weave for soft graphite, being molded into.
In the present embodiment, the inclination angle γ of the upper and lower hypotenuse (face) of parallelogram fundamental section presses 45 °, hypotenuse deflects recessed low-angle α 1, α 2, β 1, β 2 all by 2.5 ° (Wedge Angle Deviation and the clearance angle on nose wedging inclined-plane corresponding to female end are 5 °) inside cross section, and the nose of packing ring and female end end face are the inside and outside different same conical surface of shaft of two sections of gradients and are formed.When filler is compacted in using, thrust is concentrated mainly in inner side and outer side one segment limit of inside and outside position, wedge tip and filler, wherein the seal pressure of adjacent inside and outside piece surface is maximum by each position, wedge tip, thus to needing the position sealed to define the multi-stage sealed mechanism of action, making this combination forming filler be capable of more efficiently zero leakage effect.
A segment limit be concentrated mainly in position, wedge tip and filler due to thrust outside, the compressive stress in filler stage casing is less, therefore the thrust needed for not only making compression filler reach seal request is relatively small, and store in filler because abrasion or stress relaxation need deformation when compressing again and compensation ability between follow-up policy, such that it is able to extend the service life of filler.
In order to ensure the serviceability of combination forming filler, this structure also needs to take following technical scheme: when convex adaptation end ring (1) and spill adaptation end ring (3) adopt flexible graphite belt to be wound around, the global formation filler that is molded into time, the upper and lower end at this low leakage combination forming filler needs each increase by enclose the soft graphite knitting forming filler of square or square-section.
Owing to the erosion resistibility adopting the global formation filler of flexible graphite belt winding mold pressing is poor, it is therefore desirable to the upper and lower end at global formation filler increases the good soft graphite knitting forming filler of erosion resistibility.
In order to ensure the dependability of combination forming filler, this structure further needs exist for increasing following technical scheme: adapter ring (2), convex adaptation end ring (1), spill adaptation end ring (3) the tip of the acute angle shape angle of wedge adopt fillet or straight angle transition to make described formation obtuse angle, angle of wedge tip.
When the angle of wedge tip of packing ring is acute angle, owing to technique and mould are because of the impact of rope, tip, often with overlap, if overlap is brought into and is embedded in the sealing surfaces of packing ring and adjacent parts during assembling, bring impact can to undoubtedly the sealing reliability of filler.
Above in association with accompanying drawing, the specific embodiment of the present invention is described, but these explanations can not be considered as limiting the scope of the present invention.Those skilled in the art should know; the present invention is not restricted to the described embodiments; its protection domain is defined by appending claims; the technical scheme that any various changes in the scope defined without departing from claims of the present invention, modification are formed; all without spirit and the technical spirit of the deviation present invention, still can belong within scope of the presently claimed invention.
Claims (3)
1. the low leakage combination forming filler of soft graphite, it includes the identical adapter ring of multiple cross sectional shape (2), convex adaptation end ring (1) of one end, spill adaptation end ring (3) of the other end, it is characterized in that: the cross sectional shape of adapter ring (2) is hexagon, described hexagonal cross-section, two summits and two summits in outside inside it are connected to parallelogram, respectively with in two of upside, outer dead centre is starting point to intersect the top of aforementioned parallelogram after deflecting a low-angle inside cross section, constitute the upper both sides of hexagonal cross-section, again respectively with in two of downside, outer dead centre is starting point to intersect the following of aforementioned parallelogram after deflecting a low-angle inside cross section, constitute the lower both sides of hexagonal cross-section, it is adapter ring (2) with the dish-shaped entity that this hexagonal cross-section is rotarily formed；One end end face of convex adaptation end ring (1) is that plane, the other end are identical with the nose end face of adapter ring (2) and coordinate with the female end end face of adapter ring (2) in use；One end end face of spill adaptation end ring (3) is also that plane, the other end are identical with the female end end face of adapter ring (2) and coordinate with the nose end face of adapter ring (2) in use；Adapter ring (2) is the global formation filler being wound around with flexible graphite belt, being molded into, convex adaptation end ring (1) and spill adaptation end ring (3) are global formation filler, or the knitting forming filler weaving for soft graphite, being molded into.
2. the low leakage combination forming filler of soft graphite according to claim 1, it is characterized in that: when convex adaptation end ring (1) and spill adaptation end ring (3) adopt flexible graphite belt to be wound around, the global formation filler that is molded into time, the upper and lower end at this low leakage combination forming filler respectively increases the soft graphite knitting forming filler of a circle square or square-section.
3. the low leakage combination forming filler of soft graphite according to claim 1, it is characterised in that: adapter ring (2), convex adaptation end ring (1), spill adaptation end ring (3) the tip of the acute angle shape angle of wedge adopt fillet or straight angle transition to make described formation obtuse angle, angle of wedge tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032825.1A CN103759012B (en) | 2014-01-23 | 2014-01-23 | A kind of low leakage combination forming filler of soft graphite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032825.1A CN103759012B (en) | 2014-01-23 | 2014-01-23 | A kind of low leakage combination forming filler of soft graphite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103759012A CN103759012A (en) | 2014-04-30 |
| CN103759012B true CN103759012B (en) | 2016-07-06 |
Family
ID=50526300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410032825.1A Expired - Fee Related CN103759012B (en) | 2014-01-23 | 2014-01-23 | A kind of low leakage combination forming filler of soft graphite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103759012B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2303501A1 (en) * | 1973-01-25 | 1974-08-01 | Garlock Gmbh | RUBBER COMPENSATION ELEMENT FOR HYDRAULIC SLEEVES |
| GB2287772A (en) * | 1994-03-10 | 1995-09-27 | Raymond George Coughlin | Gate valve stem sealing arrangement |
| CN1214111A (en) * | 1996-03-22 | 1999-04-14 | 加洛克公司 | Compact five ring stuffing box packing assembly |
| CN2361913Y (en) * | 1999-03-24 | 2000-02-02 | 付兴孟 | Flexible graphite double-convex sealing ring |
| US6182974B1 (en) * | 1996-03-22 | 2001-02-06 | Garlock, Inc. | Stuffing box packing assembly |
| CN201531675U (en) * | 2009-09-23 | 2010-07-21 | 浙江国泰密封材料股份有限公司 | Combined packing ring used for low-leakage valve |
| CN203809690U (en) * | 2014-01-23 | 2014-09-03 | 章华 | Flexible graphite low-leakage combined molded packing |
-
2014
- 2014-01-23 CN CN201410032825.1A patent/CN103759012B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2303501A1 (en) * | 1973-01-25 | 1974-08-01 | Garlock Gmbh | RUBBER COMPENSATION ELEMENT FOR HYDRAULIC SLEEVES |
| GB2287772A (en) * | 1994-03-10 | 1995-09-27 | Raymond George Coughlin | Gate valve stem sealing arrangement |
| CN1214111A (en) * | 1996-03-22 | 1999-04-14 | 加洛克公司 | Compact five ring stuffing box packing assembly |
| US6182974B1 (en) * | 1996-03-22 | 2001-02-06 | Garlock, Inc. | Stuffing box packing assembly |
| CN2361913Y (en) * | 1999-03-24 | 2000-02-02 | 付兴孟 | Flexible graphite double-convex sealing ring |
| CN201531675U (en) * | 2009-09-23 | 2010-07-21 | 浙江国泰密封材料股份有限公司 | Combined packing ring used for low-leakage valve |
| CN203809690U (en) * | 2014-01-23 | 2014-09-03 | 章华 | Flexible graphite low-leakage combined molded packing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103759012A (en) | 2014-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10837257B2 (en) | Rubber cylinder with rigid seal rings on both ends, packer, and bridge plug | |
| CN103016867A (en) | Combined gasket | |
| CN203809690U (en) | Flexible graphite low-leakage combined molded packing | |
| US20140125012A1 (en) | Compressable sealing ring assembly | |
| CN106285552A (en) | Self-expansion type thermal recovery bore hole metal packer | |
| CN103759012B (en) | A kind of low leakage combination forming filler of soft graphite | |
| CN105626956B (en) | Waveform packing seal structure | |
| CN210531607U (en) | High-pressure fracturing pump sealing ring with stronger anti-extrusion capacity | |
| CN203670792U (en) | Elastic filler and valve using the filler | |
| CN209724285U (en) | The logical profit wedge-type sealer of anti-sticking anticreep | |
| CN203067901U (en) | Sectional type ultra-slender metal bellows | |
| CN207073661U (en) | A kind of effective precompressed of ocean composite and flexible is from tight coupling | |
| CN211201847U (en) | Eccentric wear prevention packing for oil extraction | |
| CN205991169U (en) | A kind of gasket seal | |
| CN104265992A (en) | Sealing structure of gate valve stuffing box | |
| CN205207888U (en) | Low loss valve is with packing | |
| CN204061858U (en) | A kind of piston packing of anti-high pressure | |
| CN203757161U (en) | Packing box and valve connecting and sealing structure | |
| CN206681963U (en) | Suitable for the reciprocating pump packing seal structure of high-temperature medium | |
| CN105422861A (en) | Packing seal structure internally provided with reinforcing rings | |
| CN203052039U (en) | Combined gasket | |
| CN206562986U (en) | A kind of high pressure resistant oil-immersed pump | |
| CN204083487U (en) | A kind of wedge-type seal circle for valve body, valve bonnet seal | |
| CN214534444U (en) | Novel sealing ring structure | |
| CN207454757U (en) | A kind of novel piston sealing ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20180123 |