CN112729845A - Heater rectifying component - Google Patents
Heater rectifying component Download PDFInfo
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- CN112729845A CN112729845A CN202011605793.1A CN202011605793A CN112729845A CN 112729845 A CN112729845 A CN 112729845A CN 202011605793 A CN202011605793 A CN 202011605793A CN 112729845 A CN112729845 A CN 112729845A
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- cone
- heater
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- channel
- rectifying
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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
Abstract
The invention provides a heater rectifying component which is arranged at an outlet of a heater and can enable a flow field of the heater to be uniform, so that the performance of the heater rectifying component is improved, and the test requirement of a hypersonic free jet test bed is met. The method comprises the following steps: the heater connecting section, the transition section I, the transition section II and the spray pipe connecting section are coaxially connected in sequence; a rectifying cone is arranged at the butt joint of the heater connecting section and the transition section I in the rectifying component; a rectifying pore plate is arranged at the joint of the transition section I and the transition section II; wherein the fairing cone includes: the cone, the outer ring and more than two supports for connecting the cone and the outer ring; wherein the cone has a conical section and a cylindrical section; the outer ring is connected with the cylindrical section of the cone through more than two supports which are positioned on the inner circumferential surface of the outer ring and are distributed at intervals along the circumferential direction, the rectifying cone is connected at the butt joint part of the heater connecting section and the transition section I through the outer ring, and the cone of the rectifying cone faces the outlet of the heater; the inside cooling water runner that is used for cooling it that is provided with of fairing cone.
Description
Technical Field
The invention relates to a rectifying component, in particular to a heater rectifying component, and belongs to the technical field of engine ground tests.
Background
In the hypersonic free jet test bed, airflow is heated by a heater and then is ejected out of a free jet spray pipe, the quality of a flow field simulated by the test bed is an important index of a test, the test bed simulates an airflow flow field with the total temperature up to 2000K and the total pressure up to 11MPa, in the conventional test bed, the heater is directly connected with the free jet spray pipe, the simulated airflow flow field is uneven in temperature field, and the pressure of the flow field has great pulsation, so that the requirement of the test cannot be met.
Disclosure of Invention
In view of this, the invention provides a heater rectifying component, which is installed at an outlet of a heater, and can make a flow field of the heater uniform, thereby improving performance of the heater rectifying component to meet test requirements of a hypersonic free jet test bed.
The technical scheme of the invention is as follows: a heater fairing component mounted at a heater outlet comprising: the heater connecting section, the transition section I, the transition section II and the spray pipe connecting section are coaxially connected in sequence;
a rectifying cone is arranged at the butt joint of the heater connecting section and the transition section I in the rectifying component; a rectifying pore plate is arranged at the joint of the transition section I and the transition section II;
the fairing cone includes: the cone, the outer ring and more than two supports for connecting the cone and the outer ring; wherein the cone has a conical section and a cylindrical section; the outer ring is connected with the cylindrical section of the cone through more than two supports which are positioned on the inner circumferential surface of the outer ring and are distributed at intervals along the circumferential direction, the rectifying cone is connected at the butt joint of the heater connecting section and the transition section I through the outer ring, and the cone of the rectifying cone faces the outlet of the heater;
and a cooling water flow channel for cooling the rectifying cone is arranged in the rectifying cone.
As a preferred mode of the present invention, the cooling water flow passage includes: the water inlet channel, the water outlet channel, the central channel and the circumferential cooling water channel;
a water inlet channel and a water outlet channel are processed on each support; the water inlet channel and the water outlet channel are respectively connected with an external cooling system and used for supplying and refluxing cooling water;
a central channel communicated with the water inlet channel is arranged in the center of the cone, and one end of the central channel facing the heater is a front end; cooling water flows into the central channel from the rear end of the central channel through the water inlet channel, flows forwards along the central channel and cools the inner surface of the front end of the cone;
circumferential cooling water channels are distributed in the cone along the circumferential direction, one end of each circumferential cooling water channel is communicated with the front end of the central channel, and the other end of each circumferential cooling water channel is communicated with the water outlet channel; and cooling water entering the inner surface of the front end of the cone flows along the circumferential cooling water channel to cool the cone, and then flows back to a cooling system through the water outlet channel.
In a preferred embodiment of the present invention, the front end of the central passage has a constricted section for increasing the flow rate of the cooling water.
As a preferred mode of the invention, the inner profiles of the heater connecting section, the transition section I and the spray pipe connecting section are all conical surfaces, and the inner profile of the transition section II is a cylindrical surface; the large end of the heater connecting section is connected with the small end of the transition section I, and the large end of the spray pipe connecting section is connected with the transition section II.
In a preferred embodiment of the present invention, a cooling plate for cooling the rectification hole plate is further provided at a junction between the transition section I and the transition section II.
In a preferred embodiment of the present invention, the segments of the rectifying member are connected to each other by flanges.
In a preferred mode of the invention, the rectifying cone is made of copper alloy.
Has the advantages that:
the rectifying component is additionally arranged between the heater and the free jet nozzle of the hypersonic free jet test bed and serves as a stable section, and the airflow at the outlet of the heater can be further stabilized, so that the flow field quality at the inlet of the free jet nozzle is improved, and the purpose of improving the flow field at the outlet of the free jet nozzle is further achieved.
Drawings
FIGS. 1 and 2 are overall structural views of a rectifying member of the present invention;
FIG. 3 is a schematic structural diagram of a fairing cone;
FIG. 4 is a left side view of the fairing cone of FIG. 3.
Wherein: 1-heater connecting section, 2-rectifying cone, 3-transition section I, 4-rectifying pore plate, 5-transition section II, 6-spray pipe connecting section, 7-water inlet channel, 8-water outlet channel, 9-central channel, 10-circumferential cooling water channel, 11-outer ring, 12-support and 13-cone connecting section
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
Example 1:
the embodiment provides a heater rectifying component which is arranged at an outlet of a heater, so that a flow field of the heater can be uniform, and the performance of the heater rectifying component is improved.
As shown in fig. 1 and 2, the heater rectifying member has four shaft segments coaxially connected in sequence, and the four shaft segments are respectively: the heater connecting section 1, the transition section I3, the transition section II5 and the spray pipe connecting section 6; the heater connecting section 1 and the transition section I3 are of hollow frustum structures (both an outer profile and an inner profile are frustum-shaped), the transition section II5 is of a hollow cylindrical structure (both the outer profile and the inner profile are cylindrical), and the spray pipe connecting section 5 is of a hollow structure with a bell mouth (both the outer profile and the inner profile are bell mouth); the inner diameter of the large end of the heater connecting section 1 is consistent with the inner diameter of the small end of the transition section I3 in size, and the inner diameter of the large end of the transition section I3 and the maximum inner diameter of a bell mouth of the spray pipe connecting section 5 are consistent with the inner diameter of the transition section II5 in size.
The small end of the heater connecting section 1 is connected with a heater outlet through a flange, the large end of the heater connecting section 1 is connected with the small end of the transition section I3 through a flange, the large end of the transition section I3 is connected with one end of the transition section II5 through a flange, the other end of the transition section II5 is connected with the flared end of the spray pipe connecting section 6 through a flange, and the other end of the spray pipe connecting section 6 is connected with an inlet of a free jet spray pipe through a flange.
Inside the rectifying component, a rectifying cone 2 is arranged on a flange between the heater connecting section 1 and the transition section I3, and a rectifying pore plate 4 is arranged on a flange between the transition section I3 and the transition section II5 to rectify incoming flow gas.
As shown in fig. 3 and 4, the rectifying cone 2 is integrally made of a copper alloy and structurally has a cone 13, an outer ring 11, and four supports 12 connecting the cone 13 and the outer ring 11, wherein the cone 13 has a tapered section and a cylindrical section, and both axial ends of the cone 13 are closed. The outer ring 11 is connected with the cylindrical section of the cone 13 through four supports 12 which are positioned on the inner circumferential surface of the outer ring and are uniformly distributed at intervals along the circumferential direction, and the rectifying cone 2 is connected with a flange between the heater connecting section 1 and the transition section I3 through the outer ring 11; wherein the cone 13 of the fairing cone 2 is directed towards the heater outlet.
In order to ensure that the rectifier cone 2 can bear the scouring of high-temperature airflow, a cooling water flow passage is arranged in the cone 13, and cooling water is provided by an external cooling system to cool the rectifier cone 2; specifically, the method comprises the following steps: two water inlet channels 7 and two water outlet channels 8 are processed on each support 12; the water inlet channel 7 and the two water outlet channels 8 are connected to an external cooling system, respectively, for supply and return of cooling water. A central channel 9 is arranged at the center of the cone 13 (the central channel 9 does not penetrate through the two axial ends of the cone 13), and one end of the central channel 9 facing the heater is provided with a contraction section, namely the central channel 9 is provided with a frustum section, a large-diameter section connected with the large end of the frustum section and a small-diameter section connected with the small end of the frustum section, wherein the small-diameter section is positioned at the end where the heater is positioned (the end is made to be the front end); the water inlet channels 7 are all communicated with the central channel 9 (communicated with the rear end of the central channel 9), so that cooling water flows from the rear end of the central channel 9 to the central channel 9 through the water inlet channels 7 in the four supports 12 and then flows forwards along the central channel 9, and the front end of the central channel 9 is contracted to increase the flow speed of the cooling water, so that the cooling water is sprayed to the inner surface of the front end of the cone 13. A circumferential cooling water channel 10 distributed along the circumferential direction of the rectifying cone 2 is arranged in the rectifying cone 2, one end of the circumferential cooling water channel 10 is communicated with the front end of the central channel 9, and the other end of the circumferential cooling water channel is communicated with a water outlet channel 8 at the corresponding position; after the cooling water sprayed to the inner surface of the front end of the cone 13 is subjected to surface enhanced heat exchange, the whole cone 13 is cooled along the circumferential cooling water channel 10 and then flows back to the cooling system through the water outlet channel 8. Under the action of cooling water, the front edge of the fairing cone 2 can bear strong scouring of 2500 ℃ high-temperature airflow.
Tests show that after the airflow from the heater passes through the rectifying component with the rectifying cone 2, the flow field quality of the airflow is obviously improved.
Example 2:
on the basis of the above embodiment 1, in order to prevent the high-temperature airflow from directly impacting the rectification pore plate 4, the rectification pore plate 4 needs to be thermally protected, so that the cooling plate and the rectification pore plate 4 are simultaneously arranged on the flange between the transition section I3 and the transition section II5, wherein the rectification pore plate 4 adopts high-temperature alloy, the cooling panel is cooled by copper alloy diffusion welding water, the cooling plate and the cooling panel are separately designed, the complexity of a single part can be reduced, and if the cooling plate is damaged, the cooling plate can be separately replaced, so that the loss is reduced.
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 (7)
1. A heater fairing component, comprising: is installed at the outlet of the heater and comprises: the heater comprises a heater connecting section (1), a transition section I (3), a transition section II (5) and a spray pipe connecting section (6) which are coaxially connected in sequence;
a rectifying cone (2) is arranged at the butt joint of the heater connecting section (1) and the transition section I (3) in the rectifying component; a rectifying pore plate (4) is arranged at the joint of the transition section I (3) and the transition section II (5);
the fairing cone (2) comprises: a cone (13), an outer ring (11) and more than two supports (12) connecting the cone (13) and the outer ring (11); wherein the cone (13) has a conical section and a cylindrical section; the outer ring (11) is connected with the cylindrical section of the cone (13) through more than two supports (12) which are positioned on the inner circumferential surface of the outer ring and are distributed at intervals along the circumferential direction, the rectifying cone (2) is connected at the butt joint of the heater connecting section (1) and the transition section I (3) through the outer ring (11), and the cone (13) of the rectifying cone (2) faces the outlet of the heater;
and a cooling water flow channel for cooling the rectifying cone (2) is arranged in the rectifying cone.
2. The heater fairing component of claim 1 wherein said cooling water flow path comprises: a water inlet channel (7), a water outlet channel (8), a central channel (9) and a circumferential cooling water channel (10);
a water inlet channel (7) and a water outlet channel (8) are processed on each support (12); the water inlet channel (7) and the water outlet channel (8) are respectively connected with an external cooling system and used for supplying and refluxing cooling water;
a central channel (9) communicated with the water inlet channel (7) is arranged in the center of the cone (13), and one end, facing the heater, of the central channel (9) is the front end; cooling water flows into the central channel (9) from the rear end of the central channel (9) through the water inlet channel (7), flows forwards along the central channel (9), and cools the inner surface of the front end of the cone (13);
circumferential cooling water channels (10) are circumferentially distributed in the cone (13), one end of each circumferential cooling water channel (10) is communicated with the front end of the central channel (9), and the other end of each circumferential cooling water channel is communicated with the water outlet channel (8); the cooling water entering the inner surface of the front end of the cone (13) flows along the circumferential cooling water channel (10) to cool the cone (13), and then flows back to a cooling system through the water outlet channel (8).
3. The heater fairing component of claim 2 wherein: the front end of the central channel (9) is provided with a contraction section for improving the flow rate of cooling water.
4. The heater fairing component of claim 1 wherein: the inner molded surfaces of the heater connecting section (1), the transition section I (3) and the spray pipe connecting section (6) are all conical surfaces, and the inner molded surface of the transition section II (5) is a cylindrical surface; the large end of the heater connecting section (1) is connected with the small end of the transition section I (3), and the large end of the spray pipe connecting section (6) is connected with the transition section II (5).
5. The heater fairing component of claim 1 wherein a cooling plate is further provided at the junction of said transition section I (3) and said transition section II (5) for cooling said fairing orifice (4).
6. The heater fairing component of claim 1 wherein said segments are connected in series by flanges.
7. The heater rectifying member according to claim 1, wherein the rectifying cone (2) is made of a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605793.1A CN112729845B (en) | 2020-12-29 | 2020-12-29 | Heater rectifying component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605793.1A CN112729845B (en) | 2020-12-29 | 2020-12-29 | Heater rectifying component |
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| Publication Number | Publication Date |
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| CN112729845A true CN112729845A (en) | 2021-04-30 |
| CN112729845B CN112729845B (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011605793.1A Active CN112729845B (en) | 2020-12-29 | 2020-12-29 | Heater rectifying component |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04204134A (en) * | 1990-11-30 | 1992-07-24 | Hitachi Ltd | Stopping method of wind tunnel apparatus |
| CN101701837A (en) * | 2009-11-20 | 2010-05-05 | 中国航空工业空气动力研究院 | Air flow meter with high precision and large range |
| CN203083802U (en) * | 2012-12-19 | 2013-07-24 | 中国航空工业集团公司沈阳空气动力研究所 | Flow measuring and controlling experiment device practical for aviation/aerospace |
| CN109163875A (en) * | 2018-09-20 | 2019-01-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of water-cooled experimental rig for plasma wind tunnel |
| CN109718679A (en) * | 2018-12-25 | 2019-05-07 | 中国航天空气动力技术研究院 | A kind of mixed stable voltage chamber device |
| CN110712764A (en) * | 2019-10-21 | 2020-01-21 | 中国航天空气动力技术研究院 | Subsonic velocity envelope ablation test device used under high enthalpy condition |
| CN111238760A (en) * | 2020-01-19 | 2020-06-05 | 中国空气动力研究与发展中心超高速空气动力研究所 | Low-density wind tunnel overall layout structure based on electric arc heating |
| CN112067240A (en) * | 2020-08-12 | 2020-12-11 | 中国航天空气动力技术研究院 | Method for determining surface recovery enthalpy of flat model under arc wind tunnel condition |
-
2020
- 2020-12-29 CN CN202011605793.1A patent/CN112729845B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04204134A (en) * | 1990-11-30 | 1992-07-24 | Hitachi Ltd | Stopping method of wind tunnel apparatus |
| CN101701837A (en) * | 2009-11-20 | 2010-05-05 | 中国航空工业空气动力研究院 | Air flow meter with high precision and large range |
| CN203083802U (en) * | 2012-12-19 | 2013-07-24 | 中国航空工业集团公司沈阳空气动力研究所 | Flow measuring and controlling experiment device practical for aviation/aerospace |
| CN109163875A (en) * | 2018-09-20 | 2019-01-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of water-cooled experimental rig for plasma wind tunnel |
| CN109718679A (en) * | 2018-12-25 | 2019-05-07 | 中国航天空气动力技术研究院 | A kind of mixed stable voltage chamber device |
| CN110712764A (en) * | 2019-10-21 | 2020-01-21 | 中国航天空气动力技术研究院 | Subsonic velocity envelope ablation test device used under high enthalpy condition |
| CN111238760A (en) * | 2020-01-19 | 2020-06-05 | 中国空气动力研究与发展中心超高速空气动力研究所 | Low-density wind tunnel overall layout structure based on electric arc heating |
| CN112067240A (en) * | 2020-08-12 | 2020-12-11 | 中国航天空气动力技术研究院 | Method for determining surface recovery enthalpy of flat model under arc wind tunnel condition |
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| CN112729845B (en) | 2022-09-23 |
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