Soft water pipe construction method
Sealand is a trustworthy manufacturer of CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter, ATEX, IECEx & CE approved.
With its high accuracy, wide rangeability and reliable performance, Sealand meter has been applied in many kinds of industries during the last 8 years. Unlike others who only focus on the measurement of liquid at normal pressure & temperature, Sealand has conquered the difficulty in the measurement under severe conditions, such as high pressure, high viscosity, high & low temperature.
Soft water pipe construction method
The soft water permeable pipe is composed of a high-strength steel wire ring as a support body and a pipe wall wrapping material having water permeability, filtration and protection. The high-strength steel wire is treated with phosphoric acid anti-rust treatment, and is covered with a layer of pvc material to prevent it from being separated from water and air to prevent oxidation and rust. The wrapping material is divided into three layers, the inner layer is a water-permeable layer, the material is high-strength nylon yarn; the middle layer is a non-woven geotextile filter layer; the outer layer is a coating layer, and the material is the same as the inner layer.
One: construction process
Construction process: construction precipitation - driving into sheet pile support - foundation pit excavation - paving pebble cushion - paving geotextile layers - laying through water pipes - backfilling pebbles - capping
Second: construction considerations
(1)
To ensure that the pipeline is smooth, the high-strength nylon yarn covered by the hose should be protected from ultraviolet radiation as much as possible. The water-permeable material should be backfilled in time.
(2)
There must be no extra pressure above the hose during construction. If it is not fully backfilled, the mechanical vehicle must not be driven to avoid crushing the hose frame.
(3)
In the process of backfilling the permeable material, if it is compacted with a small vibration compaction machine, it should be carried out when the thickness of the hose cover is more than 60 cm.
(4)
For the treatment of the flexible water pipe connection joint, it is only necessary to cut the corresponding wire ring at the joint and then fasten it with a nylon rope.
Three: functional characteristics
(1) Active water collecting capacity The water in the soil is sucked into the hollow pipe by the principle of pressure, which is called permeable.
(2) All-round permeable effect The entire body is made of pipe water, and there is no dead angle without water seepage.
(3) Super-strong filtering function The soft water-permeable pipe is separated from the soil by geotextile or by medium-thick sand layer to avoid all-round area.
(4) Advanced pipe structure After the anti-rust treatment, the high-carbon steel ring is covered with a layer of pvc and a layer of water-permeable material, which has sufficient radial anti-flattening ability and can prevent the pipe from falling.
(5) Adapting to different rock surface laying The soft water pipe structure can be bent freely, and can adapt to the uneven rock face.
(6) High tensile strength The tubular wrapping layer is formed by winding high-strength fibers in the transverse and longitudinal directions, which is not easily broken and can withstand sufficient soil pressure.
(7) Higher anti-corrosion ability The experiment shows that the soft water-permeable pipe is immersed in a certain concentration of acid-base solution, and the appearance is not abnormally changed.
(8) Simple and convenient construction The flexible water pipe is exempt from special joints, as long as the vise, utility knife and nylon rope can be fully constructed.
(9) Good economic durability Compared with other traditional drainage materials, the economical and working life of soft water pipes is much better.
(10) Low transportation and installation cost Light weight, packaged into rolls, easy to transport and install, and reduce construction costs.
Four: raw material characteristics
(1) Tube steel wire High-strength spring steel wire treated with phosphoric acid anti-rust
(2) In-tube filter layer Non-woven filter layer
(3) Water-permeable layer inside the pipe and outer coating layer The high-strength multi-multifilament yarn is used for the weft, and the special synthetic fiber is used for the warp.
Take CNG (compressed natural gas) for example. As the saying goes, the meter can measure anything else if it can measure CNG. It is quite hard to measure gas under high pressure. The sensor must be able to bear high pressure; in this way, the thickness of flow tube must be increased, so the transmitter shall be more sensitive to detect the signal; however, Sealand made it. Sealand's first model is specially designed for CNG dispenser, and now thousands of this model are put into use on the market.
CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter
Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com