Metal hose

Metal hose is an important component in the connecting pipeline of modern industrial equipment. Metal hose is used as wire, cable, automation instrumentation signal wire and cable protection tube and civil shower hose, specifications from 3mm to 150mm. small diameter metal hose (inner diameter 3mm-25mm) is mainly used for optical ruler of the sensor line protection, industrial sensor line protection.

Principle

Installation Stress of Piping

In the complex piping system, often due to the limitations of the space location conditions, resulting in the installation of all kinds of difficulties: moulding of the tube can not be mounted; bending over, right over, put together to mount the tube, will inevitably produce a local cold correction. According to the pipe diameter and the site of the specific situation is different, the amount of cold correction from a few millimetres to tens of millimetres, some up to hundreds of millimetres. Practice has shown that the larger the amount, the higher its internal stress, these residual installation stress in the piping system, undoubtedly hidden interest.

A model of engine in a section of bearing lubricating oil conduit, in actual operation of many fracture accidents, is because of the installation stress is too high.

Because it can be bent at will and in the rated bending radius under the conditions of the internal stress generated by bending, so it can bring the convenience of the installation work, the operation of the piping system also plays a role. This is the main reason why metal hoses are used in some piping systems.

Compensation of pipework position

Due to the need of loading and unloading moulds, the movable cylinder on the vulcanising machine will make movement in upward and downward direction. Copper serpentine tube reciprocating movement after many times, fatigue fracture will occur, although after can continue to use, but parking will cause time loss. Although the rubber hose has good soft characteristics, ability also, but in the pressure, temperature resistance, and other aspects and is the weak link, generally use a few months later, also can not continue. The good comprehensive performance of metal hose is fully embodied here. In general industry, in addition to pressure, temperature, there are often some such as fatigue, corrosion, vibration, pressure, shock and other harsh conditions, in such a case, used to compensate for the position of the pipeline movement is appropriate.

Vibration absorption

In a huge building, the air conditioning in the lobby is provided by a 6FWB unit fixed in the basement. The vibration of the unit was transmitted through the connecting piping to the ground floor hall, and the noise level was 45 dB, which made people feel uncomfortable in such an environment. After improving the design, a metal hose was connected to the connecting pipe, which not only absorbed part of the noise generated by the vibration of the unit, but also absorbed a lot of the noise generated by the pulsation of the fluid in the piping system, and at this time, the noise value in the ground hall was only 33dB, which improved the environment in the hall.

Able to absorb vibration, it can not only improve the system's ability to fatigue damage, but also to achieve the effect of reducing noise. This is the reason why metal hoses are used in some piping systems.

Characteristics

Due to the production of hose main parts of the material is the use of austenitic stainless steel, thus the hose excellent temperature resistance and corrosion resistance, hose working temperature range is very wide, for -196-600 degrees, the use of the hose according to the corrosive nature of the pipeline through the medium to choose the applicable stainless steel grade, that is, the corrosion resistance of the hose.

1. The whole metal hose is made of 1Cr18Ni9Ti stainless steel, which has strong corrosion resistance.

2. The hose body is a thin-walled stainless steel tube body hydraulic forming, with strong flexibility, scalability, bending and vibration, braided mesh sleeve to strengthen the protection, so that it has a high pressure-bearing capacity.

3. The connection between the two ends of the hose can also be made in addition to threads, flange standards other than the connection, easy to connect and use.

4. The product is not only suitable for matching with rotary joints, but also widely used in a variety of fluid media transmission of soft connections.

Erosion,, low temperature resistance (-196 ℃ ~ +420 ℃), light weight, small size, good flexibility. Widely used in aviation, aerospace, petroleum, chemical, metallurgy, electric power, paper, wood, textile, construction, medicine, food, tobacco, transport and other industries.

1, metal hose pitch between the flexible hose, bending radius is small.

2、Metal hose has good scalability, no blockage or stiffness.

3, metal hose unit weight is light, calibre consistency is good.

4, metal hose flexibility, repeat bending, good flexibility.

5, metal hose erosion, good sex.

6, metal hose anti-rodent bite, good damage, to prevent wear and tear of internal wires.

7, metal hose bending resistance, tensile performance, resistance to side pressure.

8, metal hose soft and smooth, easy to thread the installation and positioning.

9, metal hose supporting hose fittings, easy to connect with the instrumentation.