CN86209556U - High-temp and high-pressure flexible graphite sealing ring - Google Patents
High-temp and high-pressure flexible graphite sealing ring Download PDFInfo
- Publication number
- CN86209556U CN86209556U CN 86209556 CN86209556U CN86209556U CN 86209556 U CN86209556 U CN 86209556U CN 86209556 CN86209556 CN 86209556 CN 86209556 U CN86209556 U CN 86209556U CN 86209556 U CN86209556 U CN 86209556U
- Authority
- CN
- China
- Prior art keywords
- graphite
- seal ring
- wire netting
- flexible graphite
- pressure
- 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.)
- Withdrawn
Links
Images
Landscapes
- Sealing Devices (AREA)
- Gasket Seals (AREA)
Abstract
The utility model relates to a high-temp. and high-pressure flexible graphite sealing ring formed by the compound between the flexible graphite and a metal net; the utility model can be used for the static state or dynamical plane or spherical sealing under the high temperature and the high pressure.
Description
The utility model is a kind of sealed member that is used between the relative movement face, and the sealing part is composited by Expanded graphite and wire netting, can be used as the seal ring of High Temperature High Pressure valve.
Deutsches Reichs-Patent DE2612296 and B. P. GB1504841 have introduced the method for making and the application of Expanded graphite, and this have an elastic carbon material, can be as the static seal under the High Temperature High Pressure; High normal pressure and temperature Sealing dynamically adopts the Sealing of being made by polytetrafluoroethylmaterial material usually; Dynamic sealing under the High Temperature High Pressure is one of problem of paying close attention to both at home and abroad.
Task of the present utility model is the dynamic sealing under a kind of High Temperature High Pressure of development, in particular as the spherical seal ring of High Temperature High Pressure ball valve.
Seal ring of the present utility model is composited by Expanded graphite and wire netting.Wire netting is as skeleton, and the Expanded graphite filling is wrapped in the inside therebetween and with wire netting.Seal ring intensity, rigidity, toughness and elasticity that this composite material is made are good, so can be used for the dynamic seal (packing) ring under the High Temperature High Pressure.The Expanded graphite in the described composite material and the volume ratio of wire netting are 4/1-3/1, and its weight ratio is 1/1-1/2.Wire netting can be steel mesh, copper mesh, nickel screen or stainless (steel) wire, and specification is the 30-100 order, wherein is advisable with 50 orders.The process that the method for making that adopts known technology DE2612296 or GB1504841 to introduce prepares Expanded graphite is: natural flake graphite (or pyrolytic graphite) is through acidification, being washed to pH value is 6-7, expanded one-tenth worm graphite is pressed into flexible graphite platelet under the high temperature under 100 kg/cm.The thermal expansion coefficient a that this flexible graphite platelet records with the differential method is to being 3 * 10
-6L/ ℃, c is to being 1 * 10
-4L/ ℃, the thermal expansion coefficient that the composite material that Expanded graphite and wire netting are made records with the differential method is 21 * 10
-6L/ ℃, the air penetrability of taking method in common to record is 2-3 * 10
-4Milliliters/second.Square centimeter is 25% with the open compressibility that records, and rebound degree is 10%.
The preparation process of seal ring is as follows:
1. get the raw materials ready by the volume ratio or the weight ratio of above-mentioned flexible graphite platelet and wire netting,
2. wire netting is wrapped in the flexible graphite platelet,
3. above-mentioned wrappage is placed in the mould, compression moulding on the oil hydraulic press of 450-600 kg/cm,
4. will be on the relative movement face of said products pad one 50 purpose wire nettings, be coated with one deck French chalk again after extruding netted vestige with oil hydraulic press.
Fig. 1 is the seal ring of three kinds of different types.
Fig. 2 is pack into the schematic representation of valve body of three kinds of different sealing rings.
Label implication among Fig. 1 and Fig. 2 is as follows:
1 for cutting down conduit, and 2 is clamping cap, and 3 is valve body, and 4 is the ball core, and 5 is the end face stationary seal ring, and 6 is the sphere rotary packing ring, and 7 for changeing seal ring, and 8 is the valve switch handle.
Test result shows: original state, and 113 kg/cm (N2) all do not have leakage under normal temperature and 400 ℃; Under the normal temperature, 113 kg/cm (N2) are after switch cuts down 100 times, leaked 10 milliliters of i.e. 1.18 ml/min through 8.5 minutes, 70.8 milliliters/hour, the volume of nitrogen bottle is 40000 milliliters, nitrogen pressure is 113 kg/cm, and normal pressure nitrogen is 40000 * 113=4.52 * 10
6Milliliter, nitrogen pressure is reduced to original 70.8/4.52 * 10 after promptly 1 hour
-6=15.7 * 10
-6, very little, can be considered as not leaking substantially; Under 400 ℃, nitrogen pressure 113 kg/cm were leaked 10 milliliters in 18 minutes, and promptly 0.55 ml/min is better than the sealability under the normal temperature.
This test is cut down on the testing apparatus that also once was used in supercritical extraction, and its working condition is: 440 ℃ of temperature, pressure 160 kg/cm, medium is the suspension of organic solvents such as toluene, dimethylbenzene and fine coal, turned round 7 days, switch 160 times has guaranteed that the garden of test is completely successful.
In sum as can be known, the applicable working condition of the application's sealing ring is: temperature 400-440 ℃, pressure is the 100-160 kg/cm, medium is gas, liquid or suspension, seal face is plane or sphere, and sealing means is static or dynamically, manufacture craft is simple, raw material sources are abundant, and cost is lower. This sealing ring is acidproof, alkaline-resisting, corrosion resistance gas.
Claims (5)
1, a kind of graphite-seal ring that uses under High Temperature High Pressure is characterized in that it is composited by Expanded graphite and wire netting, and its volume ratio is 4/1-3/1, and weight ratio is 1/1-1/2.
2, a kind of as the said Expanded graphite dynamic seal (packing) of claim 1 ring, it is characterized in that said wire netting is steel mesh, copper mesh or nickel screen, its specification is the 30-100 order.
3, graphite-seal ring as claimed in claim 1 or 2, the specification that it is characterized in that said wire netting is 50 orders.
4, a kind of graphite-seal ring as claimed in claim 1 or 2 is characterized in that the preparation method of said seal ring is:
(1) at 100kg/cm
2Under the pressure worm graphite is pressed into flexible graphite platelet,
(2) in described ratio wire netting is wrapped in the flexible graphite platelet,
(3) above-mentioned wrappage is placed in the mould, at 450-600kg/cm
2Oil hydraulic press on compression moulding,
(4) will be on the relative movement face of said products pad one 50 purpose wire nettings, be coated with one deck French chalk again after extruding netted vestige with oil hydraulic press.
5, graphite-seal ring as claimed in claim 1 or 2 is characterized in that it can be used as the sealing of gas phase, liquid phase or liquid-solid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209556 CN86209556U (en) | 1986-11-25 | 1986-11-25 | High-temp and high-pressure flexible graphite sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209556 CN86209556U (en) | 1986-11-25 | 1986-11-25 | High-temp and high-pressure flexible graphite sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86209556U true CN86209556U (en) | 1988-03-16 |
Family
ID=4811430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86209556 Withdrawn CN86209556U (en) | 1986-11-25 | 1986-11-25 | High-temp and high-pressure flexible graphite sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86209556U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996806A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant large-diameter graphite stationary ring for mechanical seal and manufacturing method of graphite stationary ring |
| CN102996805A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant graphite stationary ring for mechanical seal and manufacturing method of brittle-fracture-resistant graphite stationary ring |
| CN102996807A (en) * | 2012-12-12 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Large-diameter graphite stationary ring for mechanical seal and manufacturing method thereof |
| CN103764560A (en) * | 2011-07-20 | 2014-04-30 | 赫姆洛克半导体公司 | Manufacturing apparatus for depositing material on carrier body |
| CN105276182A (en) * | 2014-07-03 | 2016-01-27 | 浙江三花股份有限公司 | Sealing element made of composite materials |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
-
1986
- 1986-11-25 CN CN 86209556 patent/CN86209556U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103764560A (en) * | 2011-07-20 | 2014-04-30 | 赫姆洛克半导体公司 | Manufacturing apparatus for depositing material on carrier body |
| CN102996806A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant large-diameter graphite stationary ring for mechanical seal and manufacturing method of graphite stationary ring |
| CN102996805A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant graphite stationary ring for mechanical seal and manufacturing method of brittle-fracture-resistant graphite stationary ring |
| CN102996805B (en) * | 2012-12-07 | 2016-01-20 | 辽宁天泽产业集团机械制造有限公司 | A kind of mechanical seal graphite stationary ring of resistance to embrittlement and manufacture method thereof |
| CN102996807A (en) * | 2012-12-12 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Large-diameter graphite stationary ring for mechanical seal and manufacturing method thereof |
| CN105276182A (en) * | 2014-07-03 | 2016-01-27 | 浙江三花股份有限公司 | Sealing element made of composite materials |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sherman et al. | Experimental techniques in high-pressure research | |
| CN86209556U (en) | High-temp and high-pressure flexible graphite sealing ring | |
| CN101738055A (en) | Liquid helium conveying pipeline and heat sink interface form design | |
| CN203009897U (en) | Internal-adjustment overall ball valve for top assembling at high temperature | |
| CN2317363Y (en) | Adjustable sealing gasket for valve | |
| CN2532481Y (en) | Auxiliury device for cracked rock permeability test | |
| CN211652370U (en) | Experimental device and system for evaluating compressive strength of particle profile control agent | |
| CN205794308U (en) | Landscaping sapling protective cover | |
| CN109371065B (en) | Yellow storage pretreatment method and device for straw biogas | |
| CN2319654Y (en) | Cutting-off valve | |
| CN2547866Y (en) | Long-life energy-saving pumping-well head polish rod sealing apparatus | |
| CN2367841Y (en) | Compound sealing component | |
| CN2158945Y (en) | Anti-blocked sealing ring | |
| CN2173343Y (en) | High-pressure ball type compensator for thick oil gas filling | |
| CN2285395Y (en) | Mechanical sealing device | |
| CN2126885Y (en) | High pressure self-tightening sealing structure without pretightening | |
| CN2263790Y (en) | Middle low pressure liquid phase chromatograph apparatus | |
| CN218937663U (en) | Sealing device for hydraulic test of wine storage pottery jar | |
| CN220749235U (en) | Valve core inner hole sealing lower gasket for petroleum exploitation | |
| CN206823462U (en) | A kind of air separation absorbing tower of small pipeline formula structure | |
| CN2268821Y (en) | Leakageproof structure for rotary valve rod | |
| CN2254974Y (en) | Flake graphite composite sealing platematerial | |
| CN2168149Y (en) | Fastening-type quick-acting pipe | |
| CN2280175Y (en) | High performance butterfly valve | |
| CN213271104U (en) | Two-stage metal hard sealing ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |