水菜丽加勒比av在线播放-国产精品一区二区三区综合-国产精品一区二区久久不-欧美国产精品亚洲精品观看

當前位置:首頁-新聞中心新聞中心

如何測定通風管道內(nèi)的風速及風量?

發(fā)布人:http://m.hwzxw.net   發(fā)布時間:2020-09-18 15:04:42

  通風管道內(nèi)風速及風量的測定,是通過測量壓力換算得到的。下面由小編給大家介紹一下:

  The measurement of wind speed and air volume in ventilation duct is obtained by conversion of measured pressure. Now let's introduce it to you:

  據(jù)了解,要想測得管道中氣體的真實壓力值,除了正確使用測壓儀器外,合理選擇測量斷面、減少氣流的擾動對測量結(jié)果的影響很大。

  It is understood that in order to measure the real pressure value of the gas in the pipeline, in addition to the correct use of pressure measuring instruments, reasonable selection of measurement section and reduction of airflow disturbance have great influence on the measurement results.

  測量斷面應(yīng)盡量選擇在氣流平穩(wěn)的直管段上。測定動壓時如發(fā)現(xiàn)任何一個測點出現(xiàn)零值或負值,表明氣流不穩(wěn)定,該斷面不宜作為測定斷面。

  The measurement section should be selected on the straight pipe section with stable air flow as far as possible. If zero value or negative value is found at any measuring point during the measurement of dynamic pressure, it indicates that the air flow is unstable, and this section should not be used as the measurement section.

                                    QQ截圖20170428145504.png

  當測量斷面設(shè)在彎頭、三通等異形部件前面(相對氣流流動方向)時,距這些部件的距離應(yīng)大于2倍管道直徑。

  When the measuring section is set in front of the elbow, tee and other special-shaped parts (relative to the flow direction of air flow), the distance from these parts should be greater than twice the pipe diameter.

  當測量斷面設(shè)在彎頭、三通等異形部件后面時,距這些部件的距離應(yīng)大于4~5倍管道直徑。

  When the measuring section is set behind the elbow, tee and other special-shaped parts, the distance from these parts should be greater than 4-5 times of the pipe diameter.

  當測試現(xiàn)場難于滿足要求時,為減少誤差可適當增加測點。但是,測量斷面位置距異形部件的較小距離少是管道直徑的1.5倍。

  When the test site is difficult to meet the requirements, in order to reduce the error, the measuring points can be appropriately increased. However, the smaller distance between the measuring section and the abnormal part is at least 1.5 times of the pipe diameter.


上一篇:通風管道加工應(yīng)該注意的事項!
下一篇:黑白鐵加工主要都有哪些內(nèi)容?

網(wǎng)站首頁 關(guān)于我們 產(chǎn)品展示 新聞中心 工程案例 在線留言 聯(lián)系我們

新巴尔虎左旗| 衡山县| 平乐县| 峨边| 扎鲁特旗| 永福县| 原阳县| 柳林县| 阿合奇县| 唐山市| 石景山区| 秦安县| 莱阳市| 安远县| 桐城市| 益阳市| 富蕴县| 岳西县| 忻城县| 玉树县| 呼玛县| 苍梧县| 定边县| 平昌县| 涡阳县| 广水市| 茂名市| 黎平县| 修文县| 清水县| 钟山县| 德兴市| 无锡市| 西青区| 屏山县| 菏泽市| 温泉县| 枣阳市| 娱乐| 嘉峪关市| 岑溪市|