The application of metal bellows and finned bellows in the cooler of internal combustion engine, 1-1000 with intermittent concave and convex metal bellows are installed between the two tubes of the cooler shell or the cooling core, and the flow state of the cooling medium is changed by means of the expansion pipe method and the welding method. To improve the heat transfer coefficient, increase heat transfer efficiency.
The invention has novel conception, practical process, low cost, reliable performance, high heat transfer efficiency, no scaling, long life and small thermal stress.
1, the pressure according to the actual working pressure of the hose, and then query the corrugated nominal diameter and pressure gauge, to decide whether to use stainless steel mesh sleeve type.
2, size hose nominal diameter, choose the joint type (mainly flange connection, threaded connection, fast joint connection) and the size, hose length.
3, the status according to the state of use of the hose, reference to the metal hose correct use and installation method and hose in the settlement compensation of the best length. The length of various motion states of the hose and the minimum bending times and the minimum bending radius of the hose are calculated correctly, and the length of the hose is selected and installed correctly.
4, temperature hose in the operating temperature and range of the medium, hose working ambient temperature. At high temperature, the pressure after temperature correction should be determined according to the working pressure temperature correction coefficient at high temperature of the metal bellows to determine the correct pressure level to be selected.
5, the media hose in the transport of the chemical properties of the media, according to the hose material corrosion resistance parameter table, determine the hose parts of the material.
6, vacuum hose is mainly used in monocrystalline silicon production so that it reaches a negative vacuum
Mainly used in steel belt class Steel belt
Corrugated pipe also called steel belt reinforced polyethylene spiral bellows is a kind of winding structure wall tube with high density polyethylene (PE) as matrix (internal and external layer) and surface coated with bonding resin steel strip composite. The pipe wall structure is composed of three layers: the inner layer is a continuous solid wall PE inner layer tube, the inner layer tube winding has (with the steel plate formed as "V" type) annular wave steel belt reinforcement, in the wave-shaped steel strip reinforced in vitro composite with polyethylene outer layer, thus composite into a whole spiral bellows. Its typical structure is shown in the figure. The elastic modulus of steel is nearly 200 times times that of polyethylene (the elastic modulus of carbon steel is around 190000 MPa), and the combination of metal and plastic is obviously an ideal way to achieve high stiffness and low consumption, which can combine the high stiffness of steel, high strength and plastic corrosion resistance, wear loss and flexibility and other excellent characteristics organically. Give full play to the advantages of two aspects, to make up for the shortcomings of two aspects, to achieve high performance and low cost unity.