GB2117807A - Refractory material - Google Patents
Refractory material Download PDFInfo
- Publication number
- GB2117807A GB2117807A GB08209562A GB8209562A GB2117807A GB 2117807 A GB2117807 A GB 2117807A GB 08209562 A GB08209562 A GB 08209562A GB 8209562 A GB8209562 A GB 8209562A GB 2117807 A GB2117807 A GB 2117807A
- Authority
- GB
- United Kingdom
- Prior art keywords
- felt
- refractory material
- gas turbine
- refractory
- paint
- 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- Withdrawn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
- 239000011819 refractory material Substances 0.000 title claims abstract description 13
- 239000003973 paint Substances 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000004753 textile Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002449 FKM Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000002519 antifouling agent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/24—Heat or noise insulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Material Composition (AREA)
Abstract
A refractory material suitable for use in protecting gas turbine parts comprises a felt covering impregnated with intumescent paint.
Description
SPECIFICATION
Refractory material
This invention relates to a refractory material and more particularly to such a material suitable for use as a fire protection device for protecting parts of gas turbine engines.
At present due to their relatively high operating temperatures, it is necessary to manufacture certain gas turbine engine components for example bulkheads, firewalls and ducts from titanium. However titanium is extremely expensive, due to raw material and forming operation costs, and is also becoming less readily available. Alternatively such structures may be manufactured from relatively inexpensive alloys or composite materials and thereafter provided with a refractory protective barrier of ceramic or intumescent paint, or ceramic felt.
The term "intumescent paint" is applied to a heat protective paint which when exposed to flame attack, bubbles and swells forming a relatively thick cellular carbonaceous foam.
However, the protective char so formed is relatively weak and will quickly become detached by the air or gas stream passing through the engine.
Ceramic paints suffer the disadvantage in that whilst they are capable of withstanding the temperatures involved, they are extremely brittle and quickly become detached.
The term "felt" is applied to a fabric which is either wholly or partly made from individual fibres without the intermediary of a yarn. The individual fibres are entangled in such a manner that a very firm tough yet flexible structure results. However such materials suffer disadvantages in that any engine fluid may be "wicked-up" by capillary action into the construction. This has two effects: (1 ) the weight of the component may be greatly increased and (2) the component may then constitute a fire hazard if fuel or other flammable fluid are absorbed. Furthermore felt structures manufactured with ceramic fibres are brittle and may fragment under certain conditions.
An object of the present invention is to provide a refractory material which substantially overcomes the aforementioned disadvantages.
According to the present invention a refractory material comprises a felt impregnated with intumescent paint.
Preferably the felt consists of a sheet of ceramic fibres.
Alternatively the felt consists of a sheet or organic textile fibres.
Preferably the intumescent paint is applied to the felt by painting or spraying.
Furthermore the impregnated felt may be attached to a gas turbine part to provide a refractory covering therefore.
Preferably the covering is attached to the gas turbine part by use of an adhesive.
For better understanding thereof an embodiment of the invention will be more particularly described by way of example only.
Felts made from both textile fibres and ceramic fibres are considered suitable, however textile felts have better handle ability and drape characteristics than ceramic felts. The textile fibre chosen for manufacture of such felt should be non-melting and yield a high proportion of carbon char. Typical fibres are phenolic, aromatic polyamide or alternatively felts made from both textile and ceramic fibres.
The intumescent paint may be impregnated into the felt by spraying or brushing and thereafter allowing the felt to dry. It is not the invention of this specification to teach methods either of manufacturing or formulating intumescent paint as such materials are commercially available. For example one widely known such type of paint is that made by the AVCO Corporation of America and sold under the trade name "Flamerest".
Set out below are two typical combinations of materials suitable for manufacturing a refractory covering material in accordance with the present invention.
A Gas turbine component substrate -- Carbon Fibre/Epoxy Resin Adhesive -- Flamerest 1 600B intumescent
Paint Felt -- Carbon Fibre Sealant -- Fiamerest 1 600B Intumescent
Paint.
B Gas turbine component substrate
Aluminium Alloy Adhesive-Viton Per170 rubber Felt - Kynol S21 1 (Phenolic) Sealant -- Flamerest 1 600B Intumescent
Paint.
Viton PR 170 rubber is the trade name of an adhesive manufactured by Du Pont Limited in the
United States of America, and Kynol S211 is the trade name of a phenolic fibrous felt manufactured in Japan by Nippon Kynol Incorporated.
If during operation of the gas turbine engine, a fire occurs adjacent the refractory material, the paint impregnated within the felt will intumesce and form a relatively thick carbonaceous char which effectively serves to insulate and protect the underlying felt and component substrate. As previously stated under normal circumstances the charred cellular structure is relatively weak and friable, and may easily become detached.
However the intumescent char so formed is impregnated within the felt such that it is reinforced and held in position by the felt.
Furthermore the intumescent paint acts as a sealant in its cold state such that the engine fluids cannot become "wicked up" into the felt by capillary action.
It will be appreciated by those skilled in the art that whilst the embodiment of the present invention has been particularly directed to a refractory barrier for use on gas turbine components, the invention is not restricted to such an application, and may be used in a variety of situations where such a type of fibre protection would be suitable.
Claims (6)
1. A refractory material comprising a felt impregnated with intumescent paint.
2. A refractory material as claimed in claim 1 in which the felt comprises a sheet of ceramic fibres.
3. A refractory material as claimed in claim 1 in which the felt comprises a sheet consisting of organic textile fibres.
4. A refractory material as claimed in claim 1 in which the intumescent paint is applied to the felt by painting or spraying.
5. A refractory material as claimed in any preceding claim suitable for attaching to a gas turbine part to provide a refractory covering therefore.
6. A refractory material as claimed in any preceding claim and substantially as hereinbefore described by way of example only.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08209562A GB2117807A (en) | 1982-03-31 | 1982-03-31 | Refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08209562A GB2117807A (en) | 1982-03-31 | 1982-03-31 | Refractory material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2117807A true GB2117807A (en) | 1983-10-19 |
Family
ID=10529442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08209562A Withdrawn GB2117807A (en) | 1982-03-31 | 1982-03-31 | Refractory material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2117807A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0404419A1 (en) * | 1989-06-20 | 1990-12-27 | Environmental Seals Limited | Improvements in or relating to intumescent fire seals and their method of manufacture |
| WO2013004306A1 (en) * | 2011-07-06 | 2013-01-10 | Brabants Gelderse Vastgoed Groep B.V. | Fire-resistant laminate |
| EP3366729A1 (en) * | 2017-02-28 | 2018-08-29 | Safran Transmission Systems | Turbine engine member, such as an accessory gearbox for example |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213739A (en) * | 1967-07-11 | 1970-11-25 | Snecma | Heat resistant material for a thermal shield |
| GB1300937A (en) * | 1969-09-30 | 1972-12-29 | Ruberoid Ltd Formerly The Rube | Fire-retardant thermoplastic composition |
| GB1384285A (en) * | 1971-09-14 | 1975-02-19 | Pittsburgh Corning Corp | Fireproof insulating compositions |
| GB1392307A (en) * | 1971-09-28 | 1975-04-30 | Monsanto Co | Producing falme retardant acrylonitrile polymer materials |
| GB1445832A (en) * | 1972-04-14 | 1976-08-11 | Nat Res Dev | Fire protection means |
| GB2005192A (en) * | 1977-09-30 | 1979-04-19 | Werthmann N J | Method of ventilating underground mines and improved brattice cloth construction useful therein |
| GB1575694A (en) * | 1976-03-24 | 1980-09-24 | Shepherd Thomas H | Process and apparatus for moulding contact lenses |
| GB2078805A (en) * | 1980-06-27 | 1982-01-13 | Tba Industrial Products Ltd | Fire and Weld Splash Resistant for Glass Fabric |
| GB2079801A (en) * | 1980-06-27 | 1982-01-27 | Tba Industrial Products Ltd | Weld splash resistant glass fibre fabrics |
-
1982
- 1982-03-31 GB GB08209562A patent/GB2117807A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213739A (en) * | 1967-07-11 | 1970-11-25 | Snecma | Heat resistant material for a thermal shield |
| GB1300937A (en) * | 1969-09-30 | 1972-12-29 | Ruberoid Ltd Formerly The Rube | Fire-retardant thermoplastic composition |
| GB1384285A (en) * | 1971-09-14 | 1975-02-19 | Pittsburgh Corning Corp | Fireproof insulating compositions |
| GB1392307A (en) * | 1971-09-28 | 1975-04-30 | Monsanto Co | Producing falme retardant acrylonitrile polymer materials |
| GB1445832A (en) * | 1972-04-14 | 1976-08-11 | Nat Res Dev | Fire protection means |
| GB1575694A (en) * | 1976-03-24 | 1980-09-24 | Shepherd Thomas H | Process and apparatus for moulding contact lenses |
| GB2005192A (en) * | 1977-09-30 | 1979-04-19 | Werthmann N J | Method of ventilating underground mines and improved brattice cloth construction useful therein |
| GB2078805A (en) * | 1980-06-27 | 1982-01-13 | Tba Industrial Products Ltd | Fire and Weld Splash Resistant for Glass Fabric |
| GB2079801A (en) * | 1980-06-27 | 1982-01-27 | Tba Industrial Products Ltd | Weld splash resistant glass fibre fabrics |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0404419A1 (en) * | 1989-06-20 | 1990-12-27 | Environmental Seals Limited | Improvements in or relating to intumescent fire seals and their method of manufacture |
| WO2013004306A1 (en) * | 2011-07-06 | 2013-01-10 | Brabants Gelderse Vastgoed Groep B.V. | Fire-resistant laminate |
| EP3366729A1 (en) * | 2017-02-28 | 2018-08-29 | Safran Transmission Systems | Turbine engine member, such as an accessory gearbox for example |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |