What is the use of high pressure hose?

Hose is mainly used in occasions that cannot be connected with rigid pipes, flexible connections, high pressure occasions and some special media occasions. In fact, high pressure is a relative concept. Some people think that tens of kilograms are high pressure, and some people think that hundreds or even thousands of kilograms are high pressure. High-pressure hoses are widely used in construction machinery, coal mining equipment, aerospace, ships, etc. They appear in deep sea exploration and other occasions. You can keep asking questions. The foreign rubber industry developed earlier, and there are many famous unique formulas, which are difficult for domestic manufacturers to realize, and it takes long-term accumulation and learning to compete with foreign products.

What is the difference between high-pressure oil hose and high-pressure rubber hose?

1. Rubber hose is one of the bulk products of rubber products, widely used in construction machinery, mining, metallurgy, petroleum, chemical industry, construction, agriculture, forestry and gardening, automobile, aviation, navigation, medical treatment and other fields. Different hoses have different usage requirements.
2. Glue working pressure level: low pressure: below 2:2:2:2:2Mpa; medium pressure: 2~7Mpa; high pressure and low pressure: 7~; super high pressure: above.
3. That is, hoses with working pressure within 7~ can be called high-pressure hoses, and hoses with working pressure within 7~ can be called high-pressure hoses.

How to solve the oil leakage problem of the high-pressure oil pipe?

Oil leakage at the connection part of the high-pressure oil pipe may be caused by the lax sealing of the sealing cone surface of the high-pressure oil pipe, fuel injector, and high-pressure oil pump. Through inspection, the high pressure oil pump and fuel injector were ruled out. After inspection, the conical surface of the finished cold head of the high-pressure oil pipe also conforms to the drawing, but there is a certain error in the bending dimension, which will cause additional stress on the installation. Due to the installation stress caused by the vibration of the high-pressure oil pipe and the bending error of the high-pressure oil pipe, the sealing surface is not strictly sealed. Through the enlarged projection inspection of the sealing cone surface of the high-pressure oil pipe, it is found that the cone surface is slightly incomplete, the surface shape is irregular, and some high-pressure oil pipe sealing cone surfaces have slight collisions, which are caused by the collision of parts during transportation. All of these have led to the problem of loose sealing and leakage of the connection surface of the high-pressure oil pipe after installation.

How to connect the high-pressure oil pipe?

There are mainly end-to-end direct joints, direct joints, tee joints, elbows, live nut joints, hinged joints, plugs, transition joints, etc. Materials are commonly used in stainless steel and carbon steel metric, US and UK thread standards.

Joint accessories include: nuts, jackets, flared cores, flared sleeves, and flared nuts. Pipe joints are used for straight-line connections such as instruments, and the connection forms are socket welding or threaded connections. It is mainly used for small diameter low-pressure pipelines, used in parts that need to be disassembled frequently, or used for the final adjustment of threaded pipe fittings.

There are many kinds of pipe joints, and commonly used pipe joints can generally be divided into hard pipe joints and hose joints. If divided according to the connection method of pipe joints and pipes, there are three types of hard pipe joints: flared type, jacket type and welding type, while hose joints are mainly buckle-type hose joints.

The connection methods of pipes and pipe joints in the hydraulic system are also different, and the screw-in end of the pipe adopts the connecting thread. The taper thread is mainly used in the medium and low pressure hydraulic system, which is tightened with its own cone and sealed with Teflon and other substances.

The sealing effect of fine thread is very good, and it is often used in high-pressure systems, but it needs to use combined gaskets or O-rings to seal the end face, and sometimes use copper gaskets, which are more suitable for connecting pipes with thicker walls. It is mainly composed of joint body, joint and Composition of nuts.