CN112610984B - Gas isolating device suitable for high temperature and high pressure - Google Patents
Gas isolating device suitable for high temperature and high pressure Download PDFInfo
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- CN112610984B CN112610984B CN202011474996.1A CN202011474996A CN112610984B CN 112610984 B CN112610984 B CN 112610984B CN 202011474996 A CN202011474996 A CN 202011474996A CN 112610984 B CN112610984 B CN 112610984B
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- combustion chamber
- temperature
- pulse combustion
- pressure gas
- gas
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 60
- 238000009413 insulation Methods 0.000 claims abstract description 32
- 238000002679 ablation Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- -1 polyethylene Polymers 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/60—Support structures; Attaching or mounting means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Of Bearings (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The application discloses gas isolating device suitable for high temperature high pressure, the device includes: the flexible high-temperature gas heat insulation part and the flexible high-pressure gas bearing part are arranged on the flexible high-temperature gas heat insulation part; the soft high-temperature gas heat insulation part is arranged close to the previous pulse combustion chamber and is used for separating the high-temperature high-pressure gas in the previous pulse combustion chamber from the flexible high-pressure gas bearing part; the flexible high-pressure gas bearing part comprises a first part and a second part and is arranged close to the latter pulse combustion chamber; the first component is used for resisting the high-temperature and high-pressure gas load action of the previous pulse combustion chamber and opening under the ablation action of the high-temperature gas of the next pulse combustion chamber, and a gas channel between the next pulse combustion chamber and the previous pulse combustion chamber is opened and formed; the second component is used for axially positioning and mounting the first component and radially sealing the first component. The application solves the technical problems that the overall performance of the engine is improved and the interlayer structure bearing capacity of an interlayer type device is poor due to the influence of an interlayer type structure in the prior art.
Description
Technical Field
The application relates to the technical field of pulse engine gas isolation, in particular to a gas isolation device applicable to high temperature and high pressure.
Background
The pulse engine is characterized in that a combustion chamber is divided into different propellant storage tanks and combustion reaction places by using a gas isolation device, and by reasonably distributing thrust, working time and interstage interval time among pulses, the multi-type control and energy optimal management of the flying trajectory of the missile are realized, and the flying maneuverability and the operational efficiency of the missile are comprehensively improved.
At present, the typical gas isolation structure of the existing pulse engine has two types: compartmentalized and stratified. The compartment type is that a compartment device is designed to divide a combustion chamber into a plurality of independent combustion reaction sites to realize multi-pulse series connection work. The bulkhead device mainly adopts metal or hard nonmetal as a main body structure, and has a high-temperature high-pressure bearing function when the former pulse works, and a gas channel is formed when the latter pulse works and needs to be opened at low pressure. The interlayer structure is mainly made of light and flame-retardant layer materials, the propellant is isolated by the interlayer along the axial direction or the radial direction so as to realize the respective work of each pulse, and the interlayer main body cannot bear the load action of high-pressure gas.
However, the structure of the bulkhead device is complex, and the metal structure is very easy to form hard fragments in the opening process, so that the damage to the inner wall surface of the combustion chamber is caused, and the improvement of the overall performance of the engine is influenced. The interlayer type application is less, mainly because the interlayer structure has poor bearing capacity, a specific propellant charge structure is required to realize a bearing function, and the ballistic performance in the pulse engine is limited.
Disclosure of Invention
The technical problem that this application solved is: to the improvement of engine wholeness ability of septum cabin formula structure influence in prior art and interlayer type device interlayer structure bearing capacity poor, this application provides a gas isolating device suitable for high temperature and high pressure, in the scheme that this application embodiment provided, high temperature and high pressure gas isolating device adopts soft high temperature gas heat insulation portion and flexible high pressure gas bearing part, adopts soft non-metallic material to make promptly, when a back pulse combustion chamber generates high temperature and high pressure gas, first part is opened and is formed back pulse combustion chamber with gas channel between the preceding pulse combustion chamber, soft high temperature gas heat insulation portion will when the preceding pulse combustion chamber generates high temperature and high pressure gas preceding pulse combustion chamber high temperature and high pressure gas bearing part separates, can not only realize that each pulse works respectively and bear high pressure gas load effect, still because first part has characteristics such as high strength and flexibility and produces stereoplasm piece when avoiding back pulse to open, has improved pulse engine work safety.
In a first aspect, an embodiment of the present application provides a gas isolating device suitable for high temperature and high pressure, the device includes: soft high temperature gas thermal-insulated portion and flexible high pressure gas carrier portion.
The soft high-temperature gas heat insulation part is connected with the high-pressure gas bearing part, is arranged close to the previous pulse combustion chamber and is used for separating the high-temperature high-pressure gas in the previous pulse combustion chamber from the flexible high-pressure gas bearing part;
the flexible high-pressure gas bearing part comprises a first part and a second part and is arranged close to the latter pulse combustion chamber; the first component has the characteristics of high strength, flexibility and easiness in opening under high temperature and high pressure, is used for resisting the high-temperature and high-pressure gas load action of the front pulse combustion chamber and opening under the ablation action of the high-temperature gas of the rear pulse combustion chamber, and opens and forms a gas channel between the rear pulse combustion chamber and the front pulse combustion chamber; the second component is used for axially positioning, installing and radially sealing the first component.
In the scheme that this application embodiment provided, high temperature high pressure gas isolating device adopts soft high temperature gas heat insulation portion and flexible high pressure gas bearing part, adopts soft non-metallic material to make promptly, when a back pulse combustion chamber generates high temperature high pressure gas, the first part is opened and is formed back pulse combustion chamber with gas passageway between the preceding pulse combustion chamber, soft high temperature gas heat insulation portion will when a preceding pulse combustion chamber generates high temperature high pressure gas preceding pulse combustion chamber high temperature high pressure gas with flexible high pressure gas bearing part separates, can not only realize that each pulse is work respectively and bear high pressure gas load effect, still produces the stereoplasm piece when avoiding back pulse to open because the first part has characteristics such as high strength and flexibility, has improved pulse engine work safety nature.
Optionally, the first component is a high-strength polyethylene fiber cross-woven cloth.
Optionally, the tensile strength of the high-strength polyethylene fiber cross-woven fabric is greater than 1400MPa.
Optionally, the second component is a high strength aluminum alloy ring.
Optionally, the soft high-temperature gas heat insulation part is made of an ethylene propylene diene monomer rubber-based composite material.
Optionally, the material line ablation rate of the soft high-temperature gas heat insulation part is less than or equal to 0.25mm -1 。
Optionally, the flexible high-pressure gas bearing part and the soft high-temperature gas heat insulation part are integrated through a bonding mode.
Optionally, the soft high-temperature gas heat insulation part and the part of the first component that contacts each other are convex surfaces, and the convex surfaces are close to the side of the last pulse combustion chamber.
Optionally, the radian of the convex surface is 0.01-0.05 pi.
Drawings
Fig. 1 is a schematic structural diagram of a gas isolation device suitable for high temperature and high pressure according to an embodiment of the present application.
Detailed Description
In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The gas isolation device suitable for high temperature and high pressure provided by the embodiments of the present application is described in further detail below with reference to the drawings attached to the specification, the device is arranged between a previous pulse combustion chamber and a next pulse combustion chamber, and referring to fig. 1, the device comprises: a soft high-temperature gas heat insulation part 1 and a flexible high-pressure gas bearing part 2.
The soft high-temperature gas heat insulation part 1 is connected with the high-pressure gas bearing part 1, is arranged close to a previous pulse combustion chamber, and is used for separating the high-temperature high-pressure gas in the previous pulse combustion chamber from the flexible high-pressure gas bearing part 2;
the flexible high-pressure gas bearing part 2 comprises a first part 21 and a second part 22 and is arranged close to the latter pulse combustion chamber; the first component 21 has the characteristics of high strength, flexibility and easy opening at high temperature and high pressure, is used for resisting the high-temperature and high-pressure gas load action of the front pulse combustion chamber and opening under the ablation action of the high-temperature gas of the rear pulse combustion chamber, and opens and forms a gas channel between the rear pulse combustion chamber and the front pulse combustion chamber; the second part 22 serves for axially positioning and radially sealing the first part 21.
Further, in a possible implementation manner, the first member 21 is a high-strength polyethylene fiber cross-woven cloth.
Further, in one possible implementation, the tensile strength of the high-strength polyethylene fiber cross-woven cloth is greater than 1400MPa.
Further, in one possible implementation, the second component 22 is a high strength aluminum alloy ring.
Further, in a possible implementation manner, the material of the soft high-temperature gas heat insulation part 1 is an ethylene propylene diene monomer rubber-based composite material.
Further, in a possible implementation manner, the material line ablation rate of the soft high-temperature gas heat insulation part 1 is less than or equal to 0.25mm -1 。
Further, in a possible implementation manner, the flexible high-pressure gas bearing part 2 and the soft high-temperature gas heat insulation part 1 are integrated by means of bonding.
Specifically, in the scheme provided by the embodiment of the present application, the high-temperature and high-pressure gas isolation device includes a soft high-temperature gas heat insulation part 1 and a flexible high-pressure gas bearing part 2; the flexible high-pressure gas bearing part 2 comprises a first part 21 and a second part 22, wherein the first part 21 comprises but is not limited to high-strength polyethylene fiber cross-woven cloth, and the tensile strength of the high-strength polyethylene fiber cross-woven cloth is more than 1400Mpa.
Further, if the first member 21 is a high strength polyethylene fiber cross-woven cloth, the first member 21 may be bonded to the second member 22 by fibers, wherein the second member 22 includes, but is not limited to, a high strength aluminum alloy ring. In the scheme that this application embodiment provided, because first part 21 has high strength, flexibility and the easy open characteristic under high temperature high pressure, when the back pulse combustion chamber that contacts with flexible high pressure gas carrier 2 generates high temperature high pressure gas, first part 21 can open under high temperature high pressure gas, opens and forms the gas passageway that the high temperature high pressure gas of back pulse combustion chamber flows into in the preceding pulse combustion chamber. Specifically, the drawing indicated by an arrow in fig. 1 is an enlarged view of the first member 21 and the soft high-temperature gas heat insulating portion 1.
Further, the material of the soft high-temperature gas heat insulation part 1 includes but is not limited to an ethylene propylene diene monomer rubber-based composite material, and the material line ablation rate of the soft high-temperature gas heat insulation part 1 is less than or equal to 0.25mm -1 . When the previous pulse combustion chamber in contact with the soft high-temperature gas heat insulation part 1 generates high-temperature and high-pressure gas, the soft high-temperature gas heat insulation part 1 can bear the high-temperature and high-pressure gas generated by the previous pulse combustion chamber because the material line ablation rate of the soft high-temperature gas heat insulation part 1 is low, and further the high-temperature and high-pressure gas generated by the previous pulse combustion chamber is prevented from flowing into the next pulse combustion chamber.
Further, in order to buffer the pressure, in a possible implementation manner, the portions of the soft high-temperature gas heat insulation part 1 and the first member 21 that contact each other are both convex surfaces, and the convex surfaces are close to the side of the latter pulse combustion chamber.
In a possible implementation manner, the radian of the convex surface is (0.01 pi-0.05 pi).
In the scheme that this application embodiment provided, high temperature high pressure gas isolating device adopts soft high temperature gas heat insulation part to make with 1 and flexible high pressure gas supporting part 2, adopts soft non-metallic material promptly, when a back pulse combustion chamber generates high temperature high pressure gas, first part 21 is opened and is formed back pulse combustion chamber with gas passageway between the preceding pulse combustion chamber, soft high temperature gas heat insulation part 1 will when a preceding pulse combustion chamber generates high temperature high pressure gas a preceding pulse combustion chamber high temperature high pressure gas with flexible high pressure gas supporting part 2 separates, can not only realize that each pulse is the work respectively and bear high pressure gas load effect, still because first part 21 has characteristics such as high strength and flexibility and produces the stereoplasm piece when avoiding a back pulse to open, has improved pulse engine work safety nature.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A gas isolation device suitable for high temperature and high pressure, comprising: a soft high-temperature gas heat insulation part (1) and a flexible high-pressure gas bearing part (2); wherein,
the soft high-temperature gas heat insulation part (1) is connected with the high-pressure gas bearing part (2), is arranged close to a previous pulse combustion chamber and is used for separating the high-temperature high-pressure gas in the previous pulse combustion chamber from the flexible high-pressure gas bearing part (2);
the flexible high-pressure gas bearing part (2) comprises a first part (21) and a second part (22) and is arranged close to the latter pulse combustion chamber; the first component (21) has the characteristics of high strength, flexibility and easiness in opening at high temperature and high pressure, is used for resisting the high-temperature and high-pressure gas load action of the front pulse combustion chamber and opening under the ablation action of the high-temperature gas of the rear pulse combustion chamber, and opens and forms a gas channel with a complete section between the rear pulse combustion chamber and the front pulse combustion chamber; the second component (22) is used for axially positioning and mounting and radially sealing the first component (21);
the first part (21) is high-strength polyethylene fiber cross-woven cloth;
the soft high-temperature gas heat insulation part (1) is made of an ethylene propylene diene monomer rubber-based composite material;
the parts of the soft high-temperature gas heat insulation part (1) and the first component (21) which are contacted with each other are convex surfaces, and the convex surfaces are close to the side of the last pulse combustion chamber;
the radian of the convex surface is 0.01-0.05 pi.
2. The apparatus of claim 1 wherein said high strength polyethylene fiber cross-woven cloth has a tensile strength greater than 1400MPa.
3. The apparatus of claim 1, wherein the second component (22) is a high strength aluminum alloy ring.
4. The device according to claim 1, characterized in that the material line ablation rate of the soft high-temperature gas thermal insulation part (1) is less than or equal to 0.25mm -1 。
5. The device according to claim 1~4 wherein the flexible high pressure gas bearing part (2) is integrated with the soft high temperature gas insulation part (1) by means of bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011474996.1A CN112610984B (en) | 2020-12-14 | 2020-12-14 | Gas isolating device suitable for high temperature and high pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011474996.1A CN112610984B (en) | 2020-12-14 | 2020-12-14 | Gas isolating device suitable for high temperature and high pressure |
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| CN112610984A CN112610984A (en) | 2021-04-06 |
| CN112610984B true CN112610984B (en) | 2022-11-11 |
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| CN113606057A (en) * | 2021-08-19 | 2021-11-05 | 北京理工大学 | An axial sliding diaphragm suitable for multi-pulse solid rocket motor |
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| CN101275741A (en) * | 2007-03-26 | 2008-10-01 | 靳宇男 | Pulse vector high-pressure burner |
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| CN111927652A (en) * | 2020-07-29 | 2020-11-13 | 南京理工大学 | Double-pulse solid rocket engine interlayer ablation carbonization controllable experimental device |
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