管道内壁表面渗漏水程度宜采用的检测方法

管道内壁表面渗漏水程度宜采用的检测方法
2021年01月03日08:36:01 0 395

管道内壁表面泄漏程度检测方法

管道内壁表面漏水程度应采用以下检测方法:

1湿点:用手触摸湿点,无水分渗入感,用吸墨纸或报纸粘贴,纸张不变色,检查时用粉笔勾勒出适用范围,再用钢尺测量长度和宽度,计算面积,并在管道内表面结构发展图上标注;

2渗水点:用手触摸,能感觉到渗水,手会沾上水;用吸墨纸或报纸粘贴,纸张会浸湿变色;检查时用粉笔勾勒出渗水范围,然后用钢尺测量长度和深度宽度,计算面积,并在管道内表面结构发展图上标注;

三。应使用以下方法检测水滴、水滴、管路流量和其他漏水点:

1) 管道顶部可直接用刻度容器收集测量;侧壁或底部可安装规定尺寸的带封边盒,封边盒安装在测量位置,将泄漏量导入测量容器或直接测量箱内水位;可计算单位时间的渗漏水量(单位为L/mm或L/h等),并在内表面的管柱结构展开图上标明各泄漏点位置和单位时间的单位时间渗漏水量;

2) 当难以直接检测时,可通过目测每分钟滴数或几分钟内滴数来计算该点的漏损量;根据实践经验,当漏损率为每分钟3-4滴时,24小时的漏损水量为1L;当滴速大于300滴时每分钟。形成连续的细流;

3) 采用国际标准单位L/(M2·d);

4) 管道内壁的表面积等于管道内周长和管道延伸长度的乘积。

F、 0.6管道的总泄漏量可采用以下方法测量,并应通过计算换算成L/(M2·d)标准单位:

1集水井水淹测量方法:测量集水井在规定时间内的水位上升值,计算渗漏量;

2管道最低点水量测量方法:在规定时间内测量最低点水位上升值,计算泄漏水量;

三。在有流水的管道中设置计量堰的方法:测量堰上V形槽的流量,然后计算渗漏水量;

通过专用排水泵的运行,计算出专用排水泵的工作时间和排量,并将排量换算为泄漏量。


Detection method for leakage degree of pipe inner wall surface

The following detection methods should be adopted for the degree of water leakage on the surface of the inner wall of the pipeline:

1. Wet spot: touch the wet spot with hand, and there is no feeling of moisture infiltration; stick it with blotting paper or newspaper, and the paper does not change the color; during inspection, outline the application range with chalk, and then measure the length and width with steel ruler, calculate the area, and mark it on the "structural development diagram of the inner surface of the pipe";

2. Water seepage point: if you touch it with your hand, you can feel the water infiltration, and the hand will be stained with water; if you stick it with blotting paper or newspaper, the paper will be soaked and change color; when checking, you should use chalk to outline the water seepage range, and then use a steel ruler to measure the length and width, calculate the area, and mark it on the "structural development diagram of the inner surface of the pipe";

3. The following methods should be used to detect water drops, drips, line flow and other water leakage points:

1) The top of the pipe can be directly collected and measured with a graduated container; the side wall or bottom can be installed with a box of specified size with a sealing edge, which is installed at the measuring position to lead the leakage into the measuring container or directly measure the water level in the box; the leakage water volume per unit time (unit is L / mm or L / h, etc.) can be calculated, and the leakage water volume per unit time at each leakage point position and unit time can be marked on the "pipe" column Structural development of the inner surface;

2) When direct detection is difficult, it is allowed to calculate the leakage of the point by taking the number of drops per minute or within a few minutes by visual observation; according to practical experience, when the leakage rate is 3-4 drops per minute, the leakage water volume in 24 hours is 1L; if the dripping rate is more than 300 drops per minute. A continuous trickle is formed;

3) The international standard unit of L / (M2 · d) should be adopted;

4) The surface area of the inner wall of the pipe is equal to the product of the inner circumference of the pipe and the extension of the pipe.

F. 0.6 the following methods can be used to measure the total leakage of the pipeline, and it should be converted into L / (M2 · d) standard unit by calculation:

1. Water logging measurement method of collecting well: measure the water level rise value of collecting well within the set time, and calculate the leakage volume;

2. Measurement method of water volume at the lowest part of pipeline: measure the rising value of water level at the lowest part within the set time, and calculate the leakage water volume;

3. The method of setting measuring weir in the pipe with flowing water: measure the flow of V-shaped slot on the weir, and then calculate the leakage water;

Through the operation of the special drainage pump, the working time and displacement of the special drainage pump are calculated, and the displacement is converted into leakage.


管道内壁表面渗漏水程度宜采用的检测方法

  

 管道内壁表面渗漏水程度宜采用下列检测方法:

    1  湿渍点:用手触摸湿斑,无水分浸润感觉;用吸墨纸或报纸贴附,纸不变颜色;检查时,用粉笔勾划出施渍范围,然后用钢尺测量长宽并计算面积,标示在管内表面的结构展开图;

    2  渗水点:用手触摸可感觉到水分浸润,手上会沾有水分;用吸墨纸或报纸贴附,纸会浸润变颜色;检查时,要用粉笔勾划出渗水范围,然后用钢尺测量长宽并计算面积,标示在管内表面的结构展开图;

    3  水珠、滴漏、线流等漏水点宜采用下列方法检测:

    1) 管道顶部可直接用有刻度的容器收集测量;侧壁或底部可用带有密封缘口的规定尺寸方框,安装在测量的部位,将渗漏水导入量测容器内或直接量测方框内的水位;计算单位时间的渗漏水量(单位为L/mm或L/h等),并将每个漏水点位置、单位时间的渗漏水量标示在管内表面的结构展开图;

    2) 直接检测有困难时,允许通过目测计取每分钟或数分钟内的滴落数目,计算出该点的渗漏量;据实践经验:漏水每分钟滴落速度3~4滴时,24h的渗漏水量为1L;如果滴落速度每分钟大于300滴。则形成连续细流;

    3) 应采用国际上通用的L/(m2•d)标准单位;

    4) 管道内壁表面积等于管道内周长与管道延长的乘积。

F.0.6  管道总渗漏水量的量测可采用下列方法,并应通过计算换算成L/(m2•d)标准单位:

    1  集水井积水量测法:测量在设定时间内的集水井水位上升数值,通过计算得出渗漏水量;

    2  管道最低处积水量测法:测量在设定时间内的最低处水位上升数值,通过计算得出渗漏水量;

    3  有流动水的管道内设量水堰法:量测水堰上开设的V形槽口水流量,然后计算得出渗漏水量;

    4  通过专用排水泵的运转,计算专用排水泵的工作时间、排水量,并将排水量换算成渗漏量。

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