Rubber-lined pipes are not easy to see in life. This is a special pipe skeleton. The exterior is made of a relatively hard material. For example, iron and steel. Such a hard material can certainly bear some very sharp and heavy. s things. The lining rubber pipe is very wear-resistant, and even if some chemical sulfuric acid and high-temperature ironing, will not hurt the rubber lined pipe, after all, there is a rubber as its material. So, do you know what the steps for lining plastic pipes are? Lined plastic pipelines are generally site-made, pre-installed, external lining rubber, finished pipe secondary installation. Let me give you a detailed introduction to the relevant knowledge of the construction of rubber pipes under construction .
Rubber lined pipe operation principle
The use of rubber, "Jorcker", to solve the main line of wear-resisting performance of the pipeline lining, rubber corrosion resistance and high temperature resistance of the pipeline to play a protective role.
Lining plastic pipe use advantage
Excellent structure
The reinforced skeleton steel pipe and rubber layer of the pipe are composited with high-performance adhesive to overcome the disadvantages that the pressure resistance of the steel pipe is not wearable, the wear resistance of the plastic and the rubber is not resisted, and the brittleness of the glass steel is poor, and the steel pipe has the steel pipe. And the common advantages of wear-resistant rubber, comprehensive cost-effective excellence.
2. High strength, high impact resistance
The rubber elastomer has low density, light weight, good vibration absorption performance and excellent mechanical impact resistance, high strength, good rigidity, no creep, impact resistance, shock resistance, strong water hammer resistance, easy transportation, installation And maintenance.
3. Wide range of temperature adaptation
The desulfurization lining rubber pipeline can be used for a long time in the range of -50°C to +150°C, and the lining rubber layer will not be separated from the steel frame due to a temperature change.
4. Energy saving
Good lubricity, little loss of running resistance, saving operating costs. The reinforced skeleton steel pipe and rubber layer of the pipe are composited with high-performance adhesive to overcome the disadvantages that the pressure resistance of the steel pipe is not wearable, the wear resistance of the plastic and the rubber is not resisted, and the brittleness of the glass steel is poor, and the steel pipe has the steel pipe. And the common advantages of wear-resistant rubber, comprehensive cost-effective excellence.
5. Excellent anti-aging properties
The normal service life is 15 years or more (theoretical value) under normal use pressure temperature. After 6-8 years of pipe rotation, the service life will be longer, and the service life will be longer. The lining rubber pipeline can be used repeatedly for 4 times to reduce the cost. The production cycle is short and the construction period can be ensured.
Lined rubber pipeline service life factors
1, the performance of rubber
Rubber lined rubber lined liners are determined according to the environment in which they are used. If the selected physical and chemical properties of the rubber are not in conformity with the environment, the service life will greatly reduce the serious consequences of the rubber layer falling off.
2, the adhesive strength of rubber and steel pipe
The non-rubber manufacturer's adhesive is not strong enough to bond, which can cause the liner layer's stress to not be decomposed very well, leading to uneven local stress and causing localized rapid corrosion of the rubber pipeline.
3, mining conditions
The location, corrosiveness, temperature, and service intensity all affect the service life of the lining pipe, so a reasonable analysis should be made at the beginning of the selection.
Lined plastic pipe use field
According to many years of construction experience, lining plastic pipes in different applications can be divided into two categories. One is mines where the conditions of such industrial and mining conditions are relatively harsh. The world's top rubber plates are generally imported, and their properties are all domestic Several times of rubber, making them able to work in this environment, and the general industrial and mining environment is better, in order to reduce the cost of the use of domestic rubber lined pipes, can also play an application effect.
As the superior performance of rubber-lined pipes is familiar to more businesses, its application fields include factories, power plants, industrial water treatment equipment, mineral processing, paper industry, petrochemical industry, food industry, fertilizer plants, pharmaceuticals, and environmental protection industries. Other industries.
Lining plastic pipe construction steps
1) The rubber lined pipe is a low-pressure pipe, and the pipe diameter is large.
2) The work includes: pipe joints on-site team (DN ≤ 600 when using finished pipe), welding, flange welding, grinding, pre-installation, hydraulic test, rubber lining, secondary installation of finished parts.
3) Flanged connection is adopted for all rubber pipelines, which requires a large amount of work for welding and grinding, and requires high production accuracy.
4) Some pipelines have large diameters, high installation work heights, large amount of aerial work, and large safety risks.
5) Because the inner wall and the flange surface of the pipeline need to be lined with rubber, the grinding accuracy is required to be high;
6) During the secondary installation of the finished pipe, since the inner wall is lined with glue, no fire, heating or knocking may be performed on the pipe and equipment;
7) The rubber on the flange surface is vulnerable to damage and difficult to transport and hoist.
8) The pipes are flanged and passed through the holes in the floor, making the team difficult.
9) Adjust the position of the segment and choose the right one. The reserve amount is appropriate, and the material is too long to be wasted.
10) Because the lining rubber pipe needs to be installed twice and the hydraulic pressure test is performed once for the connection group, it is connected three times in total and the bolts are tightened three times. The manual use is large. When necessary, pneumatic wrenches are used for fastening.
Lined rubber pipe construction specification
The first point: the installation of the valve should be correct, easy to repair and use; the second point of the selection of lined plastic pipe, to comply with national standards; the third point, the pendant installation must be horizontal and vertical, the pipeline should be open; the fourth point, lining Plastic pipe installation, to meet the requirements of households, after passing inspection, before proceeding with other installation steps; the fifth point, to be installed in strict accordance with the instructions; the sixth point, lined plastic pipe can be welded directly, other pipe material, can be use. In addition, the threaded interface of the plastic-lined pipe should be installed with a coil spring, and a pressure gauge should be installed on the cock.
Editor's summary: Don't worry about lining rubber pipes being easy to break. The life of the skeleton made of this hard material can be very long. The lining rubber pipeline itself can help the medium to be transported, and at the same time resist the impact force, and can also achieve the buffering effect. Even if it is used for a long time, there is no need to worry about its life will be reduced. It should be noted that the price of plastic lined pipes is very high, and its use is absolutely worthy of this price, so that users can use it conveniently during construction and enjoy it when they use it. This is the lined plastic pipe.
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