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Analysis of good performance of expansion joint

    Telescopic device It is a new type of pipe connecting device, which can replace flange and flange Compensator In various pipelines, it is used for the connection of pipes and pipes, pipes and valves. The working principle of the expansion device is to use its own retractable nature to bear the phenomenon of pipeline damage due to uneven stress, which is mainly used in major chemical pipelines. The compensation performance of the expansion joint to the pipeline is incomparable. Under the same application situation and conditions, the investment cost of the expansion joint is saved by 20% ~ 30%, the installation cost is saved by about 30%, and the installation efficiency is increased by 8 ~ 10 times.

The sealing of the expansion device depends on its own sealing ring, and the material selection of the sealing ring is very important. It is usually selected according to different pipeline environment requirements. For example, the sealing ring made of chloroprene rubber and nitrile rubber is selected at the temperature of - 30 ~ 80 ℃. It has good oil resistance and aging resistance, and is also resistant to acid and alkali. It is mostly used in normal temperature water, cold water, hot lubricating oil and some chemicals.

The expansion device is widely used, easy to install and easy to operate, but the compensation effect is obvious. Therefore, special attention should be paid to the expansion device when it is used, because the expansion device is a kind of valve accessories with strict requirements. Whether it is from the production or installation, we need to carefully detect whether there are small defects.

After the arrival of the product, some simple inspection should be carried out to judge the quality of the expansion device through the sound, appearance, hand feeling and other aspects, so as to eliminate some small problems.

1. Hit the shell of the expansion device by hand. If the sound is dull, generally speaking, the material of the expansion device is better.

2. Look at the surface of the expansion device to see if there has been any feeding phenomenon or whether the mortar has been applied.

3. Touch the cutting surface by hand. Generally, the blade pattern of high-quality telescopic device is relatively neat and not uneven.

4. Direct measurement of hole spacing is only an intuitive method to see if it meets the installation requirements.

Shanghai Huanjing is a large-scale manufacturer specializing in the production of various types of extenders. With more than 20 years of experience, Shanghai Huanjing has been at the top level in the field of expansion. We have incomparable advantages in terms of raw material purchase, production technology and equipment. Each process of the product has been strictly inspected and tested, and the product quality is worthy of your trust.

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