Device for simulating flowing and heat transfer characteristics of water-oil mixture in regenerative cooling channel

A simulation device, regenerative cooling technology, applied in the direction of flow characteristics, measurement devices, material thermal development, etc., can solve the problems of unclear emulsifier characteristics, restricted application range, limited storage time of emulsified fuel, etc., to achieve long working time and expand The effect of strong ability and easy replacement

Inactive Publication Date: 2021-09-24
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the storage time of emulsified fuel is very limited, and the characteristics of the emulsifier after absorbing heat in the cooling channel are not yet clear, which greatly restricts its application range

Method used

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  • Device for simulating flowing and heat transfer characteristics of water-oil mixture in regenerative cooling channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0058] During the experiment, two constant-flow pumps 13 and 17 pumped kerosene and water from storage tanks 11 and 15 through filters 12 and 16 at a set volume flow respectively, and mixed them at the tee 19 at the outlet of water-oil supply system 1 . During this process the flow meters 14, 18 measure the actual flow of the two fluids respectively.

[0059] The mixed liquid is heated in a two-stage heating system 2 . Wherein 21 is a preheating section, which promotes the mixing of kerosene and water in the pipeline through preheating. The temperature sensor and the pressure sensor installed at the 22 places of the four-way one measure the temperature and pressure of the preheated mixed fluid. The preheated mixed fluid is heated in the secondary heating section 23 to the temperature required for the experiment. The heated fluid is subjected to temperature and pressure measurement for the second time at Sitong 2 21 .

[0060] The mixed fluid is cooled and recovered in the c...

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Abstract

The invention relates to a flowing and heat transfer characteristic simulation device for a water-oil mixture in a regenerative cooling channel, and belongs to the field of flow and heat transfer characteristic simulation. The device consists of a storage tank, a filter, a constant flow pump, a flowmeter, a tee joint, a preheating section, a four-way joint, a secondary heating section, a cooling device, a filter, a back pressure valve, a kerosene recovery device, a gas-liquid separator, a wet gas flowmeter, a gas collection device, a liquid collection device, a measurement and control computer, a data acquisition device, a temperature sensor, a wall temperature sensor, a pressure sensor and a high-pressure gas source. The functions of accurate working medium input, segmented mixing, heating and product separation and collection are achieved, and the mixing and cracking of a kerosene and water mixture in a cooling channel of a scramjet engine can be simulated. The flowing and heat transfer characteristics of the kerosene and water mixture in the cooling channel of the scramjet engine are obtained. The device has the advantages of convenience in use, stable work, accurate working condition, good safety and the like.

Description

technical field [0001] The invention relates to a device for simulating flow and heat transfer characteristics of water-oil mixture in a regenerative cooling channel, belonging to the field of flow and heat transfer characteristics simulation. Background technique [0002] The temperature of the kerosene in the scramjet regenerative cooling channel increases gradually after absorbing a large amount of heat. When the temperature exceeds 500℃, the kerosene undergoes thermal cracking. Thermal cracking can bring many benefits such as improving fuel heat sink, enhancing mixing effect, and improving combustion performance, but the resulting coking and carbon deposition will block cooling channels, affect engine performance, and threaten flight safety. Steam catalytic reforming can alleviate the problem of coking and carbon deposition to a certain extent, and can effectively increase the heat absorption capacity of fuel. However, because kerosene and water are not miscible, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00G01N25/20
CPCG01N11/00G01N25/20
Inventor 刘朝阳贾东鹏潘余王宁马磊
Owner NAT UNIV OF DEFENSE TECH
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