CN112254969B - Gas collecting device capable of uniformly feeding gas - Google Patents
Gas collecting device capable of uniformly feeding gas Download PDFInfo
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- CN112254969B CN112254969B CN202010956450.3A CN202010956450A CN112254969B CN 112254969 B CN112254969 B CN 112254969B CN 202010956450 A CN202010956450 A CN 202010956450A CN 112254969 B CN112254969 B CN 112254969B
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- gas
- flange
- circular ring
- gas collecting
- collecting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- General Physics & Mathematics (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a gas collecting device for uniform gas intake, which comprises: an air inlet flange, an air collection circular ring, a straight pipe and an air collection flange; the gas collection flange is coaxially arranged at the center of the gas collection circular ring, and the gas collection flange and the gas collection circular ring are communicated through more than three straight pipes; wherein, more than three straight pipes are uniformly distributed along the circumferential direction of the gas collecting flange, and two ends of each straight pipe are respectively welded and communicated with the gas collecting flange and the gas collecting circular ring; one end of each of the gas inlet flanges is welded on the gas collecting circular ring, and the other end of each of the gas inlet flanges is connected with a gas source and used for inputting mixed gas into the gas collecting circular ring; all the air inlet flanges are uniformly distributed along the circumferential direction of the air collecting circular ring, and the axial direction of each air inlet flange is parallel to the axial direction of the air collecting flange; the gas collecting flange is coaxially connected with the injector and used for uniformly spraying mixed gas to the combustion chamber through the injector.
Description
Technical Field
The invention relates to the technical field of high-enthalpy air heating for engine ground tests, in particular to a gas collecting device for uniform air intake.
Background
The high-flow high-enthalpy air heater for the long-time examination test of the hypersonic ramjet has the characteristics of high gas temperature (about 2100K), high pressure (the highest 11 Mpa), oxygen-enriched combustion (large required air inflow), large structural size and the like, the heater is easy to ablate due to the characteristics, and under the condition that the heater works for a long time (more than or equal to 300 s), the inner components of the heater reach thermal balance, so that the requirement on the uniformity of oxygen-enriched air entering an injector is very high, and a gas collecting device adaptive to the heater is not found in the prior art, so that the oxygen-enriched air can uniformly enter the injector.
Disclosure of Invention
In view of this, the present invention provides a gas collecting device with uniform gas intake, which can enhance the gas intake uniformity of the injector and reduce the gas intake flow rate.
The technical scheme of the invention is as follows: a gas collection device for uniform intake comprising: an air inlet flange, an air collection circular ring, a straight pipe and an air collection flange;
the gas collection flange is coaxially arranged at the center of the gas collection circular ring, and the gas collection flange and the gas collection circular ring are communicated through more than three straight pipes; wherein, more than three straight pipes are uniformly distributed along the circumferential direction of the gas collecting flange, and two ends of each straight pipe are respectively welded and communicated with the gas collecting flange and the gas collecting circular ring;
one end of each of the gas inlet flanges is welded on the gas collecting circular ring, and the other end of each of the gas inlet flanges is connected with a gas source and used for inputting mixed gas into the gas collecting circular ring; all the air inlet flanges are uniformly distributed along the circumferential direction of the air collecting circular ring, and the axial direction of each air inlet flange is parallel to the axial direction of the air collecting flange;
the gas collecting flange is coaxially connected with the injector and used for uniformly spraying mixed gas to the combustion chamber through the injector.
Preferably, each straight pipe comprises two sections of sub-pipes which are detachably connected, one sub-pipe is welded on the gas collecting circular ring, and the other sub-pipe is welded on the gas collecting flange.
Has the advantages that:
1. the gas collecting device can enhance the uniformity of inlet air and reduce the flow velocity of inlet air, and further ensures that the injector uniformly injects air to a combustion chamber connected behind the injector, thereby enhancing the stability of the high enthalpy air heater.
2. The sub-pipe is designed in a segmented manner, so that the split storage or maintenance of the gas collecting device can be effectively ensured.
Drawings
Fig. 1 is a front view of a gas collection device of the present invention.
Fig. 2 is a cross-sectional view C-C of fig. 1.
Wherein, 1-gas collection circular ring, 2-straight pipe, 3-gas collection flange, and 4-gas inlet flange.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides a gas collecting device for uniform gas inlet, which can enhance the gas inlet uniformity of an injector and reduce the gas inlet flow speed.
As shown in fig. 1 and 2, the gas collecting device comprises: air inlet flange 4, gas collection ring 1, straight tube 2 and gas collection flange 3.
The connection relationship of the gas collection device is as follows: the gas collecting flange 3 is coaxially arranged at the center of the gas collecting circular ring 1, and the gas collecting flange and the gas collecting circular ring 1 are communicated through more than three straight pipes 2; wherein, more than three straight pipes 2 are uniformly distributed along the circumferential direction of the gas collecting flange 3, and two ends of each straight pipe 2 are respectively welded and communicated with the gas collecting flange 3 and the gas collecting circular ring 1;
one end of each of the more than one pair of air inlet flanges 4 is welded on the gas collection circular ring 1, and the other end of each of the more than one pair of air inlet flanges is connected with an air source and used for inputting mixed gas (such as oxygen-enriched air) into the gas collection circular ring 1; all the air inlet flanges 4 are uniformly distributed along the circumferential direction of the air collecting ring 1, and the axial direction of each air inlet flange 4 is parallel to the axial direction of the air collecting flange 3;
the gas collecting flange 3 is coaxially connected with the injector and is used for uniformly injecting mixed gas to the combustion chamber through the injector;
because the mixed gas enters the gas collecting circular ring 1 from more than one pair of gas inlet flanges 4, the gas collecting circular ring 1 needs to be filled with the mixed gas at first, then the mixed gas is sent into the gas collecting flange 3 through more than three straight pipes 2 which are uniformly distributed on the circumference of the gas collecting circular ring 1, the gas collecting flange 3 sends the mixed gas into a combustion chamber through an injector, the axial flow rate of the mixed gas flow is reduced, the uniformity of a mixed gas flow field and components is improved, the uniformity of the mixed gas required by the high-enthalpy air heater can be greatly improved, the combustion stability is improved, and the high-enthalpy air heater can stably work for a long time under the conditions of high temperature, high pressure and large flow.
Furthermore, each straight pipe 2 comprises two sections of sub-pipes which are detachably connected, one sub-pipe is welded on the gas collecting circular ring 1, and the other sub-pipe is welded on the gas collecting flange 3, so that the gas collecting device can be stored or maintained in a split mode.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A gas collecting device that evenly admits air, its characterized in that includes: the gas collecting device comprises a gas inlet flange (4), a gas collecting circular ring (1), a straight pipe (2) and a gas collecting flange (3);
the gas collection flange (3) is coaxially arranged at the center of the gas collection circular ring (1), and the gas collection flange and the gas collection circular ring are communicated through more than three straight pipes (2); more than three straight pipes (2) are uniformly distributed along the circumferential direction of the gas collecting flange (3), and two ends of each straight pipe (2) are respectively welded and communicated with the gas collecting flange (3) and the gas collecting circular ring (1);
one end of each of the more than one pair of the gas inlet flanges (4) is respectively welded on the gas collecting circular ring (1), and the other end of each of the gas inlet flanges is connected with a gas source and used for inputting mixed gas into the gas collecting circular ring (1); all the air inlet flanges (4) are uniformly distributed along the circumferential direction of the air collecting circular ring (1), and the axial direction of each air inlet flange (4) is parallel to the axial direction of the air collecting flange (3);
the gas collecting flange (3) is coaxially connected with the injector and used for uniformly spraying mixed gas to the combustion chamber through the injector.
2. A gas collecting device with uniform gas inlet as in claim 1, characterized in that each straight pipe (2) comprises two sections of detachably connected sub-pipes, one sub-pipe being welded to the gas collecting ring (1) and the other sub-pipe being welded to the gas collecting flange (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010956450.3A CN112254969B (en) | 2020-09-11 | 2020-09-11 | Gas collecting device capable of uniformly feeding gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010956450.3A CN112254969B (en) | 2020-09-11 | 2020-09-11 | Gas collecting device capable of uniformly feeding gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112254969A CN112254969A (en) | 2021-01-22 |
| CN112254969B true CN112254969B (en) | 2022-10-28 |
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| CN202010956450.3A Active CN112254969B (en) | 2020-09-11 | 2020-09-11 | Gas collecting device capable of uniformly feeding gas |
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Citations (11)
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|---|---|---|---|---|
| WO1999067508A1 (en) * | 1998-06-22 | 1999-12-29 | The University Of Chicago | Method and apparatus for reducing particulates and nox emissions from diesel engines utilizing oxygen enriched combustion air |
| DE10125026A1 (en) * | 2000-06-14 | 2001-12-20 | Caterpillar Inc | Inlet air separation system for internal combustion engine controls nitrogen content of air used in combustion process via engine control module depending on engine operating states |
| CN201696165U (en) * | 2010-05-27 | 2011-01-05 | 北京动力机械研究所 | Pulse detonation engine with side-intake rotating drum |
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| CN102305159A (en) * | 2011-08-26 | 2012-01-04 | 上汽通用五菱汽车股份有限公司 | Engine dual-fuel plastic air inlet manifold |
| CN103277313A (en) * | 2013-04-27 | 2013-09-04 | 陈璇 | Enthalpy-adding rotary compressor with movable jet orifice |
| CN203541916U (en) * | 2013-11-05 | 2014-04-16 | 什邡市明日宇航工业股份有限公司 | Welding tool for titanium alloy rotating air inlet cowling |
| CN209147727U (en) * | 2018-12-13 | 2019-07-23 | 宁夏弘翊航空油料有限公司 | A kind of spent acid cracker combustion heater |
| JP2019157736A (en) * | 2018-03-12 | 2019-09-19 | いすゞ自動車株式会社 | Internal combustion engine |
| CN110617115A (en) * | 2019-10-29 | 2019-12-27 | 北京动力机械研究所 | Turbine engine guide ring assembly produced by additive manufacturing mode |
| CN110987352A (en) * | 2019-12-30 | 2020-04-10 | 湖南云顶智能科技有限公司 | Supersonic premixed airflow generating device capable of adjusting working condition in wide range |
-
2020
- 2020-09-11 CN CN202010956450.3A patent/CN112254969B/en active Active
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|---|---|---|---|---|
| WO1999067508A1 (en) * | 1998-06-22 | 1999-12-29 | The University Of Chicago | Method and apparatus for reducing particulates and nox emissions from diesel engines utilizing oxygen enriched combustion air |
| DE10125026A1 (en) * | 2000-06-14 | 2001-12-20 | Caterpillar Inc | Inlet air separation system for internal combustion engine controls nitrogen content of air used in combustion process via engine control module depending on engine operating states |
| CN201696165U (en) * | 2010-05-27 | 2011-01-05 | 北京动力机械研究所 | Pulse detonation engine with side-intake rotating drum |
| CN102022225A (en) * | 2010-12-30 | 2011-04-20 | 北京航空航天大学 | Test unit for hydrogen-rich/ oxygen-rich gas multinozzle gas-gas injector |
| CN102305159A (en) * | 2011-08-26 | 2012-01-04 | 上汽通用五菱汽车股份有限公司 | Engine dual-fuel plastic air inlet manifold |
| CN103277313A (en) * | 2013-04-27 | 2013-09-04 | 陈璇 | Enthalpy-adding rotary compressor with movable jet orifice |
| CN203541916U (en) * | 2013-11-05 | 2014-04-16 | 什邡市明日宇航工业股份有限公司 | Welding tool for titanium alloy rotating air inlet cowling |
| JP2019157736A (en) * | 2018-03-12 | 2019-09-19 | いすゞ自動車株式会社 | Internal combustion engine |
| CN209147727U (en) * | 2018-12-13 | 2019-07-23 | 宁夏弘翊航空油料有限公司 | A kind of spent acid cracker combustion heater |
| CN110617115A (en) * | 2019-10-29 | 2019-12-27 | 北京动力机械研究所 | Turbine engine guide ring assembly produced by additive manufacturing mode |
| CN110987352A (en) * | 2019-12-30 | 2020-04-10 | 湖南云顶智能科技有限公司 | Supersonic premixed airflow generating device capable of adjusting working condition in wide range |
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| CN112254969A (en) | 2021-01-22 |
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