AERODYNAMICS ANALYSIS OF SELF-SUCTION TYPE ISOVELOCITY FLY ASH SAMPLING GUN

doi:10.19666/j.rlfd.2006.03.006

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AERODYNAMICS ANALYSIS OF SELF-SUCTION TYPE ISOVELOCITY FLY ASH SAMPLING GUN

更新时间：2025-09-28

- AERODYNAMICS ANALYSIS OF SELF-SUCTION TYPE ISOVELOCITY FLY ASH SAMPLING GUN
- Thermal Power Generation Issue 3, Pages: 19-22(2006)
- 作者机构：
  
  华北电力大学
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2006.03.006
  CLC： TM621
- Published：2006
- 稿件说明：
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AERODYNAMICS ANALYSIS OF SELF-SUCTION TYPE ISOVELOCITY FLY ASH SAMPLING GUN[J]. Thermal power generation, 2006, (3): 19-22.
DOI：

AERODYNAMICS ANALYSIS OF SELF-SUCTION TYPE ISOVELOCITY FLY ASH SAMPLING GUN[J]. Thermal power generation, 2006, (3): 19-22. DOI： 10.19666/j.rlfd.2006.03.006.

摘要

分析了自吸式飞灰等速取样枪引射原理

建立了引射器射流流量比m的理论表达式

得出m仅由压头比ε和流速比x、y确定。对自吸式飞灰等速取样枪的引射系统进行了数值模拟

得到了被吸喷嘴出口流速随被吸喷嘴与混合管进口距离L的变化规律

为取样枪的设计和现场调试提供了理论依据。

Abstract

The induced injection principle of self-suction type isovelocity fly ash sampling gun has been analysed

the theoritical expresion equation of jet flow rate m for the induced injector being established

obtaining m only from determination of the pressure head ratio ε and of the velocity ratio x and y. The numerical simulation of the induced injecting system for the said sampling gun has been carried out

obtaining the rule of spray nozzle’s exit velocity to be varying along with the variation of the mixing tube’s length L

providing theroritical basis for design

debugging and application of the said sampling gun in the field.

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