CN-122015013-A - High-temperature condensed water vapor prevention rapid transmission system and method for vacuum test section

CN122015013ACN 122015013 ACN122015013 ACN 122015013ACN-122015013-A

Abstract

The invention relates to the technical field of vacuum test equipment, in particular to a high-temperature condensate vapor prevention rapid transmission system and method for a vacuum test section. The system comprises a water vapor generator, a conveying pipeline and a vacuum test section, wherein the conveying pipeline is connected with an outlet of the water vapor generator and an inlet of the vacuum test section and is used for conveying high-temperature water vapor converted by the water vapor generator to the vacuum test section, an active heat preservation unit is sleeved outside the conveying pipeline and is used for heating and preserving heat of the water vapor flowing through the conveying pipeline, the active heat preservation unit is electrically connected with a control system, and an anti-vibration assembly is arranged on the conveying pipeline and is used for isolating and attenuating external mechanical vibration. The invention adopts a high-efficiency heat-insulating structure, can obviously reduce energy loss in the transmission process, ensures that water vapor keeps stable temperature in the transmission process, and further improves the reliability of the system through an anti-vibration design.

Inventors

CHEN JUNMOU
QU ZHENLE
WANG HUIMING
LI JIANWEI
WANG JINRUI
LI XIAHUI
CHEN WEI

Assignees

中国航天空气动力技术研究院

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (10)

1. The high-temperature condensed water vapor prevention rapid transmission system for the vacuum test section is characterized by comprising a vapor generator, a conveying pipeline and the vacuum test section, wherein an aircraft model is arranged in the vacuum test section; the conveying pipeline comprises a first conveying pipeline and a second conveying pipeline which are sequentially connected, wherein two ends of the first conveying pipeline are connected with the outlet of the water vapor generator and the inlet of the vacuum test section and are used for conveying the water vapor converted by the water vapor generator to the vacuum test section; the outside of the conveying pipeline is sleeved with an active heat preservation unit which is used for heating and preserving heat for water vapor flowing through the inside of the conveying pipeline; And an anti-vibration assembly is arranged on the conveying pipeline and used for isolating and damping external mechanical vibration.
2. The rapid transport system for high temperature condensate vapor prevention of a vacuum test section of claim 1, wherein the anti-vibration assembly comprises a plurality of conduit supports connecting the outer wall of the transport conduit with an external foundation.
3. The rapid transport system for high temperature condensate vapor prevention of a vacuum test section of claim 2, wherein the pipe support employs an elastic hanger or a damping support.
4. The rapid high temperature condensate vapor prevention transmission system for a vacuum test section of claim 2, wherein a high temperature resistant silica gel layer or rubber layer is provided between the pipe support and the outer wall of the conveying pipe.
5. The rapid transport system for high temperature condensate vapor prevention of a vacuum test section of claim 1, wherein the anti-vibration assembly comprises a plurality of flexible connection tubes connected in series in the transport conduit.
6. The high-temperature condensate vapor prevention rapid transmission system for a vacuum test section according to claim 1, wherein at least one U-shaped or omega-shaped expansion bend is arranged on the conveying pipeline, and the active heat preservation unit is arranged on the outer side of the expansion bend.
7. The high-temperature condensate vapor prevention rapid transmission system for a vacuum test section according to claim 1, wherein the active heat preservation unit is a heating sleeve sleeved on the outer wall of the conveying pipeline, and the heating sleeve adopts a flexible electric heating film.
8. The high-temperature condensed water vapor preventing rapid transmission system for a vacuum test section according to claim 1, wherein a vibration isolation base is fixedly connected to the bottom of the water vapor generator, and the vibration isolation base is made of damping materials.
9. The rapid high temperature condensate vapor prevention transmission system for a vacuum test section of claim 1, wherein the delivery conduit is provided with a plurality of sets of temperature and pressure monitoring assemblies for monitoring the temperature and pressure of the vapor, the temperature and pressure monitoring assemblies being electrically connected to the control system.
10. A high temperature condensate vapor fast transfer method for a vacuum test section, characterized by the system according to any one of claims 1-9, comprising the steps of: S1, starting the steam generator, and generating high-temperature steam after the steam generator receives a trigger signal; S2, conveying the high-temperature water vapor to the vacuum test section through the first conveying pipeline, conveying the high-temperature water vapor to the aircraft model through the second conveying pipeline, and spraying the water vapor to the aircraft model; In the conveying process, a conveying active heat preservation unit heats and preserves the heat of the steam in the conveying pipeline, and the temperature of the steam is maintained to be higher than the condensation critical temperature; the anti-vibration component isolates and dampens external mechanical vibration; S3, monitoring the temperature and the pressure of steam in the conveying pipeline in real time, if the temperature is monitored to be lower than a set threshold value, sending a signal by the control system to adjust the heating power of the active heat preservation unit, and if the pressure fluctuation is monitored to exceed a preset range, sending a prompt signal by the control system.

Description

High-temperature condensed water vapor prevention rapid transmission system and method for vacuum test section Technical Field The invention relates to the technical field of vacuum test equipment, in particular to a high-temperature condensate vapor prevention rapid transmission system and method for a vacuum test section. Background In vacuum tests in the fields of aerospace, material science, energy engineering and the like, the rapid transmission of high-temperature steam is a core link. For example, wind tunnel test needs to simulate a high heat flow environment, high temperature resistance test of materials needs to accurately control steam temperature and pressure, and thermodynamic test in a vacuum environment depends on steam stability. However, the conventional vapor transmission system faces multiple challenges in a vacuum test section, namely, firstly, the vacuum environment pressure is extremely low (usually less than 100 Pa), so that the condensation critical temperature of vapor is obviously reduced, if the temperature control is insufficient in the transmission process, vapor is easily condensed into a liquid state in a pipeline, heat energy loss, pipeline blockage and even equipment corrosion are caused, and secondly, the rapid start of high-temperature vapor (for example, the pressure reaching more than 0.2MPa in less than 1 second) has extremely high requirements on the response speed and the heat energy holding capacity of the system, and the conventional vapor transmission system adopts a static heat preservation layer or an intermittent heating device, so that the dynamic heat load change of the vacuum test section is difficult to cope with. Finally, mechanical vibration (such as equipment starting impact and external environment interference) between the steam generator and the test section is easily transmitted through the rigid pipeline, so that stress concentration, sealing failure or test data distortion of the pipeline are caused, and the main pipeline is easy to locally deform due to unabsorbed thermal expansion stress. The above problems severely limit the accuracy and efficiency of vacuum tests, and a vapor transmission system that combines rapid response, condensation prevention and vibration resistance is needed. Disclosure of Invention The invention aims to solve the technical problems, and provides a high-temperature condensed water vapor prevention rapid transmission system for a vacuum test section, which provides higher precision and more stable support for a vacuum test. One or more embodiments of the present disclosure provide a high temperature condensed water vapor prevention rapid transmission system for a vacuum test section, including a water vapor generator, a delivery conduit, and a vacuum test section having an aircraft model disposed therein; the conveying pipeline comprises a first conveying pipeline and a second conveying pipeline which are sequentially connected, wherein two ends of the first conveying pipeline are connected with the outlet of the water vapor generator and the inlet of the vacuum test section and are used for conveying the water vapor converted by the water vapor generator to the vacuum test section; the outside of the conveying pipeline is sleeved with an active heat preservation unit which is used for heating and preserving heat for water vapor flowing through the inside of the conveying pipeline; and the second conveying pipeline is provided with an anti-vibration assembly for isolating and damping external mechanical vibration. Preferably, the anti-vibration assembly comprises a plurality of pipeline supports, and the pipeline supports are used for connecting the outer wall of the conveying pipeline with an external foundation. Preferably, the pipe support adopts an elastic hanger or a damping support seat. Preferably, a high temperature resistant silica gel layer or a rubber layer is arranged between the pipeline support piece and the outer wall of the conveying pipeline. Preferably, the anti-vibration assembly comprises a plurality of flexible connection pipes connected in series in the conveying pipeline. Preferably, at least one U-shaped or omega-shaped expansion bend is arranged on the conveying pipeline, and the active heat preservation unit is arranged on the outer side of the expansion bend. Preferably, the active heat preservation unit is a heating sleeve sleeved on the outer wall of the conveying pipeline, and the heating sleeve adopts a flexible electric heating film. Preferably, the bottom of the steam generator is fixedly connected with a vibration isolation base, and the vibration isolation base is made of damping materials. Preferably, the conveying pipeline is provided with a plurality of groups of temperature and pressure monitoring assemblies for monitoring the temperature and the pressure of steam, and the temperature and pressure monitoring assemblies are electrically connected with the control system. The invention