Heater rectifying component

A technology for heaters and components, which is applied in rectification components and heater rectification components. It can solve the problems of pressure pulsation in flow field, uneven temperature field in airflow flow field, and failure to meet the needs of tests, etc., to improve flow field and flow field quality effect

Active Publication Date: 2021-04-30
BEIJING POWER MACHINERY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the hypersonic free jet test bench, the air flow is heated by the heater and ejected from the free jet nozzle. The quality of the flow field simulated by the test bench is an important indicator of the test. The test bench simulates the air flow field with a total temperature of up to 2000K and a total pressure of up to 11MPa , in the existing test bench, the heater is directly connected to the free jet nozzle, the simulated air flow field temperature field is not uniform, and the flow field pressure has large fluctuations, which cannot meet the needs of the test

Method used

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Examples

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Embodiment 1

[0025] This embodiment provides a rectifying part of the heater, which is installed at the outlet of the heater, so as to make the flow field of the heater uniform and improve its performance.

[0026] Such as figure 1 and figure 2 As shown, the rectifying part of the heater has four shaft sections connected coaxially in sequence, and the four shaft sections are respectively: heater connection section 1, transition section I3, transition section II5 and nozzle connection section 6; wherein the heater connection Section 1 and transition section I3 are hollow frustoconical structures (outer surface and inner surface are both frustum-shaped), transition section II5 is hollow cylindrical structure (outer surface and inner surface are both cylindrical), and the nozzle is connected Section 5 is a hollow structure with a bell mouth (both the outer surface and the inner surface have a bell mouth); the inner diameter of the large end of the heater connection section 1 is consistent w...

Embodiment 2

[0033] On the basis of the above-mentioned embodiment 1, in order to prevent the high-temperature air flow from directly impacting the rectifying orifice 4, the rectifying orifice 4 needs to be thermally protected, so a cooling plate and a cooling plate are installed on the flange between the transition section I3 and the transition section II5 at the same time. The rectification orifice 4, wherein the rectification orifice 4 is made of high-temperature alloy, and the cooling panel is copper alloy diffusion welding water cooling, the two are designed separately, which can reduce the complexity of a single part, if the cooling plate is damaged, it can also be replaced separately to reduce losses.

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Abstract

The invention provides a heater rectifying component which is mounted at a heater outlet and can enable a heater flow field to be uniform, so that the performance of the heater rectifying component is improved, and the test requirement of a hypersonic speed free jet test bed is met. The heater rectifying component comprises a heater connecting section, a transition section I, a transition section II and a spray pipe connecting section which are sequentially and coaxially connected. A fairing cone is arranged at the butt joint of the heater connecting section and the transition section I in the rectifying component; a rectifying orifice plate is arranged at the butt joint of the transition section I and the transition section II; the fairing cone comprises a cone body, an outer ring and more than two supports for connecting the cone body and the outer ring, the cone body is provided with a conical section and a cylindrical section; the outer ring is connected with the cylindrical section of the cone body through more than two supports which are located on the inner circumferential surface of the outer ring and distributed at intervals in the circumferential direction, the fairing cone is connected to the butt joint of the heater connecting section and the transition section I through the outer ring, and the cone body of the fairing cone faces a heater outlet; and a cooling water flow channel for cooling the fairing cone is arranged in the fairing cone.

Description

technical field [0001] The invention relates to a rectifying component, in particular to a heater rectifying component, belonging to the technical field of engine ground tests. Background technique [0002] In the hypersonic free jet test bench, the air flow is heated by the heater and ejected from the free jet nozzle. The quality of the flow field simulated by the test bench is an important indicator of the test. The test bench simulates the air flow field with a total temperature of up to 2000K and a total pressure of up to 11MPa , in the existing test bench, the heater is directly connected to the free jet nozzle, the simulated air flow field temperature field is not uniform, and the flow field pressure has a large pulsation, which cannot meet the needs of the test. Contents of the invention [0003] In view of this, the present invention provides a heater rectification component installed at the outlet of the heater, which can make the flow field of the heater uniform,...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor付清波刘巍石浩
OwnerBEIJING POWER MACHINERY INST