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Device for simplifying internal combustion wave rotor experiment based on relative movement

A technology of internal combustion wave rotor and experimental device, which is applied in the direction of internal combustion engine testing, etc., can solve the problems of difficulty in observing the flame structure in the channel of the data acquisition wave rotor, the unclear interaction mechanism between flame and complex wave system, and increase the complexity of the system, etc., to achieve convenience Qualitative research, avoiding difficulties in data collection, effect of simple structure

Active Publication Date: 2015-03-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although a lot of research has been done on the wave rotor technology at home and abroad and a lot of achievements have been made, the internal combustion wave rotor technology is still in the pre-research stage, and the combustion process in the wave rotor and the interaction mechanism between the flame and the complex wave system are still unclear. The internal combustion wave rotor structure involved contains a complete wave rotor structure, which undoubtedly increases the complexity of the system in the pre-research stage, and brings certain difficulties to data collection and observation of the flame structure in the wave rotor channel

Method used

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  • Device for simplifying internal combustion wave rotor experiment based on relative movement
  • Device for simplifying internal combustion wave rotor experiment based on relative movement
  • Device for simplifying internal combustion wave rotor experiment based on relative movement

Examples

Experimental program
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Effect test

no. 1 example

[0044] Considering the effect of the centrifugal force field, the sealing disc 4 is fixed on the base 8, the wave rotor channel 2 rotates relative to the sealing disc 4, and the installation sequence of the observation window 24 on the wave rotor channel 2 is copper gasket 244---quartz glass 243---copper gasket 244---observation window cover plate 245, the wave rotor channel 2 is fixed between the long arm 33 connecting one support unit and the broken arm 36 of another support unit, the long arm 33 and the short arm 36 The tension bolts 38 between them are tightened, and the centrifugal force generated by the rotation mainly acts on the tension bolts 38, so as to prevent the long arm 33 of the connecting bracket 3 from being greatly deformed due to the centrifugal force of the wave rotor channel 2, which will affect the stability of the system. The long arm 33 of the support 3 is in contact with the vertical arm 34 and a rounded corner is excessively 37, which eliminates the st...

no. 2 example

[0046] When studying the interaction mechanism between the shock wave and the flame, the effect of the centrifugal force field can be ignored. At this time, the wave rotor channel 2 is fixed (it is easy to achieve fixation, not shown in the drawings), and the sealing plate 41 at the inlet end passes through the connector 5 and the rotating shaft 7 In order to prevent the relative movement between the sealing disk 41 at the inlet end, the connector 5 and the rotating shaft 7 during the rotation process, the positioning disk 6 is arranged on both sides of the sealing disk 41 at the assembled inlet end and the connector 5, and the positioning nut is used to 61 fix the three, the first outlet end sealing disc 421 and the second outlet end sealing disc 422 are overlapped to ensure that the third annular hole 425 and the fourth annular hole on the two sealing discs overlap, and the second annular hole 423 and the gap 424 overlap, fix the connector 5, the sealing disc 4 and the rotati...

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Abstract

The invention discloses a device for simplifying an internal combustion wave rotor experiment based on relative movement. The device comprises a gas inlet pipeline, a wave rotor channel, a connecting support, a sealing plate, a connector and other structures. Under the condition that the wave rotor channel is connected with a rotating shaft without the connecting support, the sealing plate is connected with the rotating shaft through the connector, the sealing plate rotates relative to the wave rotor channel, the wave rotor channel is in a static state, and the study on a wave rotor channel internal shock wave flame interaction mechanism and the non-steady flow and combustion process is conveniently conducted. The sealing plate is static, when the wave rotor channel is connected with the rotating shaft through the connecting support and rotates relative to the sealing plate, a specular reflection principle can be used for studying the change characteristics of a flame structure in the wave rotor channel under the action of a centrifugal force field through an observation window in the wave rotor channel.

Description

technical field [0001] The invention belongs to the technical field of aero-engine unsteady supercharged combustion, and in particular refers to a simplified internal combustion wave rotor experimental device based on relative motion. Background technique [0002] The internal combustion wave rotor is an unsteady combustion device based on supercharged combustion technology, which can greatly increase the turbine inlet pressure while the turbine inlet temperature remains unchanged; in addition, the combustion process of the internal combustion wave rotor is completed in the wave rotor channel. A wave rotor usually contains dozens of channels, and each channel completes the process of filling, burning, and exhausting with the rotation of the wave rotor. At any time, there are multiple wave rotors performing the filling and exhausting process, so Compared with other unsteady combustion devices (such as pulse detonation engines), the internal combustion wave rotor has relativel...

Claims

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Application Information

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IPC IPC(8): G01M15/04
Inventor 李建中巩二磊韩启祥郝艳娜陈坚刘博强尚伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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