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Assistant nozzle jet air flow measuring device

A technology of auxiliary nozzles and jet airflow, which is applied in the direction of measuring fluid flow by measuring pressure difference and volume/mass flow generated by mechanical effects, which can solve the problems of inconvenient measurement and inaccurate measurement methods

Inactive Publication Date: 2009-02-25
JIANGSU WANGONG TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This measurement method is imprecise and inconvenient to measure

Method used

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  • Assistant nozzle jet air flow measuring device
  • Assistant nozzle jet air flow measuring device
  • Assistant nozzle jet air flow measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] As in the auxiliary nozzle shown in accompanying drawing 4 and accompanying drawing 5, the high-pressure air flows through the spray chamber 33 of the auxiliary nozzle 4 and ejects the jet airflow from the nozzle 32. The outside of the auxiliary nozzle forms a round flat shape, and the head is smooth and streamlined. so as not to scratch the warp yarn. The spray direction is slightly upwardly biased, as shown by angle α in Fig. 5 .

[0021] The jet airflow of the auxiliary nozzle does not appear parallel airflow at the outlet, but scatters to the surrounding free space in the form of a cone at a certain scattering angle. Controlling the direction, speed and flow of the auxiliary jet is the key to the quality of weft insertion. The auxiliary jet flow is described by jet angle, injection angle and diffusion angle, where the jet angle is the angle between the auxiliary jet flow and the weft insertion air flow in the horizontal direction; the jet angle is the direction ang...

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PUM

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Abstract

The invention relates to an auxiliary nozzle jet airflow measuring device, comprising an auxiliary nozzle, a pitometer, a pressure sensor, an auxiliary nozzle mounting platform, and a measuring bench, wherein the auxiliary nozzle mounting platform is sliding arranged with an auxiliary nozzle mounting support along X-axis for mounting the auxiliary nozzle, the measuring bench comprises a first sliding platform, a second sliding platform, and a controller which input is electrically connected with the output of the pressure sensor, the output of the controller is electrically connected with a first transmitter and a second transmitter for respectively moving the first and the second sliding platforms. Therefore, only needs to mount object auxiliary nozzle on a fixing device, moves the first and the second sliding platforms, the pressure sensor arranged on the second sliding platform can move to pointed position, to measure the pressure value of local ejected airflow, thereby judging the quality and practicality of the auxiliary nozzle.

Description

technical field [0001] The invention relates to a device for measuring jet flow of an auxiliary nozzle. Background technique [0002] The air-jet loom uses jet air as the weft insertion carrier, and the jet air pulls the weft yarn over the reed groove. The function of the auxiliary nozzle is to generate jet air under a specified pressure. The flow rate of the jet air must be high, and the direction of the jet center axis of the jet air Must be correct to guarantee auxiliary nozzle performance. [0003] In the prior art, the U-shaped tube is used to measure the jet flow of the auxiliary nozzle, that is, a measurement plane is taken, and the measurement points are equidistant on each coordinate axis, and the pressure of each measurement point is measured from the height of the water column of the U-shaped tube. value, the pressure distribution is obtained from pressure measurements at a limited number of measurement points. This measurement method is imprecise and inconvenie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/34G01F1/46
Inventor 周平祝章琛
Owner JIANGSU WANGONG TECH GRP CO LTD