Double eccentric butterfly valve design concepts into the design of ball valves

As the sphere of traditional ball always in contact with the sealing surface of the valve seat,  Stainless steel needle valves  process could easily lead to wear seat sealing surface of the sphere, causing the valve to produce the drain. To overcome this deficiency, the double eccentric butterfly valve ball valve design concepts into the design, the development of a new type of valve structure - single-seat double eccentric fixed ball. The series ball valve seal attached to the structure, mainly for the hydroelectric power  High pressure ball valve inlet end, the medium is water at room temperature for turbine maintenance or crew protection system failed to adjust drying time. The product can also be used for other transportation systems such as municipal water and oil. Hydraulic valve operation can be a heavy hammer, worm gear, electric, hydraulic and pneumatic form.

Special twin gate design can produce a so-called self-interference melt flow behavior

Special twin gate design can produce a so-called melt flow behavior of the self-interference, since the interference current through this aggregation structure of the polymer can be controlled to give the impact strength of the products obtained is much better than the general gate products, which kinds of self-interference flow cavity is difficult to describe the traditional theoretical simulations, using  Instrument needle valve  methods it is difficult to have a clear understanding of, and the use of computer-aided engineering (CAE) technology to simulate the flow of the process, so that we possible to study the formation and influencing factors, to establish for the theory and actual production. This paper  Stainless steel needle valves  the injection mold flow, cooling, Paul theoretical pressure numerical simulation of the whole process, the establishment of a flow, cooling and packing process mathematical model; then on the role and function of CAE software MOLDFLOW conducted a comprehensive introduction and application of the ABS software elbow pipe gate location to optimize the design, analysis of the situation of several gate location weld lines and bubbles, based on this proposal gives an optimal gate location.

Consider the surrounding tube sheet holes Expanding the impact of tubes and tube sheet material strain hardening properties

Within the slotted tube sheet heat exchanger Hydraulic Expansion joint structure as the research object, the establishment of the hydraulic expansion joints dimensional finite element model to simulate the process of Hydraulic Expansion. The model  Stainless steel needle valves  tube sheet holes Expanding impact tubes and tube sheet material strain hardening properties, tubes protruding ends of the tube sheet end effects.  Instrument manifolds  residual joints pull-off strength index for the evaluation, analysis of the tube sheet hole slot width, depth, location and number of the tightness of the joint and pull-off strength. Contact pressure of the joints, the distribution of the residual contact pressure, and the pressure change on the Expansion of the distribution trend. According to the conclusions of the study of the heat exchanger expansion joints for structural design parameters.