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The overall effect of insulating joints
Buried steel oil, gas, water pipelines often due to corrosion damage, not only reduces life expectancy, also cause serious accidents. Prevent corrosion of buried pipeline is to take effective measure s to cathodic protection technology. In cathodic protection project it is required to be protected pipes and connected to some of the installations, equipment, electrical connection between the branches cut off, to avoid cathodic protection current is lost to the need to protect the connected components. In order to ensure the success of cathodic protection.
Previously used to achieve this across the insulating flange electrical connection. But the construction site installation requirements insulating flange clean, no moisture, here is difficult to achieve. Insulating flange bolts are often unreliable. It has been shown that many insulating flange insulation is only a short-term guarantee. As insulating flange failure, often makes well-designed, well construction cathodic protection system failure, resulting in leakage or leakage, resulting to pay high maintenance costs. In addition, the buried insulating flange often require ancillary structures - flange wells, increa se the surface area and additional fees.
New pipeline insulation equipment - the advent of the overall insulation joints, then to overcome these problems. It uses a maintenance-free, non-removable overall structure, can be directly buried, no outbuildings, extremely easy to use and with high reliability.
brass hose fittingsThis type of insulation joints can meet the overall cathodic protection requirements, but also to avoid the insulating flange defects, as replacement products, foreign countries have been widely adopted. China has promulgated SY/T0086-2003 standards also recommend the use of the new product.
ZJ3 series features
hydraulics fittingsZJ3 overall type insulation joint company through several generations of unremitting efforts to develop scientific and technological personnel, has formed a series of products. In product desig n, material properties, tooling and process improvement and other aspects unique, with full independent intellectual property rights. And product quality can be comparable to similar foreign products. By the state five ministries listed as national key new products.
ZJ3 series insulating joint has the following characteristics:
1. Factory assembled, the overall structure of prefabricated
2. The factory strictly mechanical, electrical inspection
hose crimping machine3. Suitable for direct buried
4. Without any maintenance
5. According to a variety of specifications to meet the high, medium and low pressure oil, water and gas industry requirements for pipe network
ZJ3 overall type insulation joints main technical indicators:
Working pressure: 1.6 ~ 42Mpa (420 Kg)
Operating temperature :: -20 ~ 320 ℃ (220 hot line has been obtained on application)
Dielectric Strength :: ≥ 5KV, 50Hz
Insulation resistance: 2500V measurement ≥ 10MΩ
Nominal diameter: DN15 ~ DN2500 (1.6 meters in diameter, has large diameter insulated joint application examples)
