CN115164236A - Heat insulation assembly suitable for oil thrower disc combustion chamber - Google Patents
Heat insulation assembly suitable for oil thrower disc combustion chamber Download PDFInfo
- Publication number
- CN115164236A CN115164236A CN202210673950.5A CN202210673950A CN115164236A CN 115164236 A CN115164236 A CN 115164236A CN 202210673950 A CN202210673950 A CN 202210673950A CN 115164236 A CN115164236 A CN 115164236A
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- CN
- China
- Prior art keywords
- combustion chamber
- heat shield
- diffuser
- insulation assembly
- heat insulation
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 59
- 238000009413 insulation Methods 0.000 title claims abstract description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 20
- 239000003921 oil Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
The invention discloses a heat insulation assembly suitable for a combustion chamber of an oil thrower, which relates to the technical field of combustion chambers of oil throwers and comprises the following components: the combustor comprises a combustion chamber and a diffuser, wherein an annular cavity is formed between the combustion chamber and the diffuser; the annular cavity is internally provided with the heat shield, the bottom end of the heat shield is connected with the diffuser, an airflow channel is formed between the heat shield and the combustion chamber, and airflow flows to the inlet of the combustion chamber from top to bottom through the airflow channel.
Description
Technical Field
The invention relates to the technical field of oil thrower disc combustors, in particular to a heat insulation assembly suitable for an oil thrower disc combustor.
Background
The oil throwing disc type combustion chamber is widely applied to a microminiature engine, the rotating speed of the microminiature engine is high, and the centrifugal force generated by the rotating speed can greatly improve the atomization effect of fuel oil within 4-10W. The high-temperature fuel gas increases the heat radiation of the combustion chamber to peripheral parts, wherein the compressor part has larger influence.
Due to the design of unimpeded heat radiation between the outer ring of the conventional oil throwing disc type combustion chamber and a diffuser of the gas compressor, the combustion chamber radiates a large amount of heat to parts of the gas compressor, the temperature of the gas compressor is increased, and the efficiency of the gas compressor is reduced. Meanwhile, the temperature rise of the diffuser can cause the rigidity and deformation of parts to be poor, so that the risks of increasing the thermal state deformation of the parts, changing the clearance of the air compressor and the like are brought, and the efficiency is possibly further reduced.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides the heat insulation assembly suitable for the oil thrower combustion chamber.
The technical scheme of the invention is realized as follows:
an insulation assembly adapted for use in an oil slinger combustion chamber, comprising: the combustor comprises a combustion chamber and a diffuser, wherein an annular cavity is formed between the combustion chamber and the diffuser;
the annular cavity is internally provided with a heat shield, the bottom end of the heat shield is connected with the diffuser, an airflow channel is formed between the heat shield and the combustion chamber, and airflow flows from top to bottom through the airflow channel to the combustion chamber inlet.
Furthermore, the heat shield is located between the combustion chamber and the diffuser, and the bottom end of the heat shield is fixedly connected with the diffuser through bolts.
Further, the material of the heat shield is S304 stainless steel or S310 stainless steel.
Furthermore, the heat shield is of a curved surface structure.
Further, the surface roughness of the heat shield is more than 3.2mm.
Furthermore, the thickness of the heat shield is 1 mm-3 mm.
The invention has the beneficial effects that:
1. the heat insulation assembly is suitable for the oil thrower combustion chamber, and the heat insulation screen is directly arranged on the combustion chamber and the diffuser, so that the heat radiation from the combustion chamber to the diffuser can be effectively reduced, the temperature of the diffuser is reduced, and the efficiency of the gas compressor is improved.
2. The heat insulation assembly is suitable for the oil thrower combustion chamber, airflow flows into the annular cavity and forms an airflow channel through the heat insulation screen, the airflow channel flows to the combustion chamber inlet from top to bottom, the flow guide effect is achieved, the heat insulation screen with the curved surface structure enables the annular cavity channel to be narrowed, the flow velocity of the airflow passing through the airflow channel is increased, the jet depth of the airflow at the combustion chamber inlet is improved, and the cooling effect is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic illustration of an insulation assembly suitable for use in a combustion chamber of an oil slinger in accordance with an embodiment of the present invention;
in the figure:
1. a heat shield; 2. a combustion chamber; 3. a diffuser; 4. an annular cavity; 5. an airflow channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
In accordance with an embodiment of the present invention, an insulation assembly adapted for use with a combustion chamber of an oil slinger is provided.
As shown in fig. 1, an insulation assembly for a disc combustor according to an embodiment of the present invention includes: the combustion chamber 2 and the diffuser 3 form an annular cavity 4 between the combustion chamber 2 and the diffuser 3;
be equipped with heat shield 1 in the ring chamber 4, heat shield 1 bottom is connected with diffuser 3, and forms airflow channel 5 between heat shield 1 and the combustion chamber 2, and the air current is from last down through airflow channel 5 flow direction to the 2 entrances of combustion chamber.
By means of the technical scheme, the heat shield 1 is directly arranged on the combustion chamber 2 and the diffuser 3, so that the heat radiation from the combustion chamber 2 to the diffuser 3 can be effectively reduced, the temperature of the diffuser 3 is reduced, and the efficiency of the gas compressor is improved.
In addition, heat shield 1 is located between combustion chamber 2 and diffuser 3, and the bottom of heat shield 1 passes through bolt and diffuser 3 fixed connection.
According to the technical scheme, one air flow of the oil thrower combustion chamber is folded back 180 degrees from the outlet of the compressor and flows downwards into the annular cavity 4 between the combustion chamber 2 and the diffuser 3, and the heat shield 1 is additionally arranged in the annular cavity 4, so that one air flow can only flow into the inlet of the combustion chamber 2 from the air flow channel 5 between the heat shield 1 and the combustion chamber 2, and the effect of guiding the flow is achieved.
In addition, in the technical scheme, the heat shield 1 is made of S304 stainless steel or S310 stainless steel; the heat shield 1 is of a curved surface structure; the surface roughness of the heat shield 1 is more than 3.2mm; the thickness of the heat shield 1 is 1 mm-3 mm.
Specifically, through the ring cavity 4, due to the fact that the heat shield 1 is additionally arranged, airflow flows into an inlet of the combustion chamber 2 through the airflow channel 5 between the heat shield 1 and the combustion chamber 2, the heat shield 1 enables the flow channel of one airflow to be narrow, the flow rate of the gas is increased, the jet flow depth of the airflow at the front end of the combustion chamber 2 is improved, and the cooling effect of the combustion chamber is further improved.
Furthermore, the heat shield 1 having a curved surface structure effectively reduces gas flow loss through CFD (Computational Fluid Dynamics) calculation. In addition, the heat shield 1 is rounded at the airflow inlet to reduce flow losses.
In summary, with the above technical solution of the present invention, the following effects can be achieved:
1. the heat insulation assembly is suitable for the oil thrower combustion chamber, and the heat insulation screen 1 is directly arranged on the combustion chamber 2 and the diffuser 3, so that the heat radiation from the combustion chamber 2 to the diffuser 3 can be effectively reduced, the temperature of the diffuser 3 is reduced, and the efficiency of the gas compressor is improved.
2. The invention is suitable for the heat insulation assembly of the oil thrower combustion chamber, the airflow flows into the annular cavity 4 and forms the airflow channel 5 through the heat shield 1 to flow towards the inlet of the combustion chamber 2 from top to bottom, so as to play a role of guiding, and the heat shield 1 with a curved surface structure narrows the flow channel of the annular cavity 4, so that the flow velocity of the airflow passing through the airflow channel 5 is increased, the jet depth of the airflow at the inlet of the combustion chamber 2 is improved, and the cooling effect is further improved.
3. The invention is suitable for the heat insulation assembly of the oil thrower combustion chamber, and the heat shield 1 reduces the gas flow loss through the structural design.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (6)
1. An insulation assembly adapted for use in an oil slinger combustion chamber, comprising: the combustion chamber (2) and the diffuser (3), wherein an annular cavity (4) is formed between the combustion chamber (2) and the diffuser (3);
be equipped with heat shield (1) in ring chamber (4), heat shield (1) bottom with diffuser (3) are connected, just heat shield (1) with form airflow channel (5) between combustion chamber (2), the air current is from last down through airflow channel (5) flow direction combustion chamber (2) entry.
2. The insulation assembly for a hydro-extracting disc combustor according to claim 1, wherein the bottom end of the heat shield (1) is fixedly connected to the diffuser (3) by means of bolts.
3. The insulation assembly for a hydro-extracting pan combustion chamber as recited in claim 2 wherein the material of the heat shield (1) is S304 stainless steel or S310 stainless steel.
4. The insulation assembly for a flail combustion chamber according to claim 3, characterized in that the heat shield (1) is of curved construction.
5. The insulation assembly adapted for a flail combustion chamber according to claim 4, characterized in that the surface roughness of the heat shield (1) is greater than 3.2mm.
6. The insulation assembly for a hydro-extracting cage combustion chamber as set forth in claim 5, characterized in that the thickness of the heat shield (1) is 1mm to 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210673950.5A CN115164236A (en) | 2022-06-15 | 2022-06-15 | Heat insulation assembly suitable for oil thrower disc combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210673950.5A CN115164236A (en) | 2022-06-15 | 2022-06-15 | Heat insulation assembly suitable for oil thrower disc combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115164236A true CN115164236A (en) | 2022-10-11 |
Family
ID=83484908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210673950.5A Pending CN115164236A (en) | 2022-06-15 | 2022-06-15 | Heat insulation assembly suitable for oil thrower disc combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115164236A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB686908A (en) * | 1948-11-30 | 1953-02-04 | Szydlowski Joseph | Improvements in or relating to combustion apparatus for a gas turbine unit |
| CA2618781A1 (en) * | 2007-01-16 | 2008-07-16 | Honeywell International Inc. | Combustion systems with rotary fuel slingers |
| CN203395943U (en) * | 2013-06-18 | 2014-01-15 | 中国航空动力机械研究所 | Combustion chamber flame tube |
| CN205842740U (en) * | 2016-06-16 | 2016-12-28 | 上海和兰透平动力技术有限公司 | There is the toroidal combustion chamber of the gas turbine of self-cooling function |
| CN107339712A (en) * | 2017-06-13 | 2017-11-10 | 中国航发湖南动力机械研究所 | Radial flow combustor diffuser and gas turbine |
| WO2021176335A1 (en) * | 2020-03-02 | 2021-09-10 | Briggs & Stratton, Llc | Internal combustion engine with reduced oil maintenance |
-
2022
- 2022-06-15 CN CN202210673950.5A patent/CN115164236A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB686908A (en) * | 1948-11-30 | 1953-02-04 | Szydlowski Joseph | Improvements in or relating to combustion apparatus for a gas turbine unit |
| CA2618781A1 (en) * | 2007-01-16 | 2008-07-16 | Honeywell International Inc. | Combustion systems with rotary fuel slingers |
| CN203395943U (en) * | 2013-06-18 | 2014-01-15 | 中国航空动力机械研究所 | Combustion chamber flame tube |
| CN205842740U (en) * | 2016-06-16 | 2016-12-28 | 上海和兰透平动力技术有限公司 | There is the toroidal combustion chamber of the gas turbine of self-cooling function |
| CN107339712A (en) * | 2017-06-13 | 2017-11-10 | 中国航发湖南动力机械研究所 | Radial flow combustor diffuser and gas turbine |
| WO2021176335A1 (en) * | 2020-03-02 | 2021-09-10 | Briggs & Stratton, Llc | Internal combustion engine with reduced oil maintenance |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No. 1333 Yingshanhong Road, Huangdao District, Qingdao, Shandong Province, 266000 Applicant after: Zhongke Hangxing Technology Co.,Ltd. Address before: 266400 Binhai Avenue South, Shanchuan Road West, Huangdao District, Qingdao City, Shandong Province Applicant before: ZHONGKE HANGXING TECHNOLOGY Co.,Ltd. Country or region before: China |
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| CB02 | Change of applicant information |