Damping spring hanger pipeline equipment _ _ Huaneng spring hangers

Spring hangers in addition to meeting the various functional requirements, but also want it to have sufficient strength in the working conditions and lifetime use does not produce any permanent deformation, but should also be light weight, small size, easy to manufacture and low prices. Some of these conflicting requirements, such as requiring sufficient strength tends to cause weight gain and increase in cost. Sometimes to fully meet these requirements is difficult. Therefore, in spring hanger design should first meet the functional requirements, followed by strength requirements, and finally on account of its economy. Usually spring hanger design steps should be: according to the requirements of use, select suitable spring shape, type and end structures. According to the given spring hanger position for example to allow the maximum diameter, minimum diameter, free height and deformation amount of the coil spring; plywood spring length, width _ the number plate, arc deflection and free state Higher) fix a spring contour size. Depending on conditions (such as temperature, ambient media, magnetic requirements for selecting suitable materials according to the load characteristics of the spring hanger conditions of use (for example, static load, dynamic load or impact load, repeated load or vibration loads, etc. ) determine the allowable stress, calculate a variety of specific geometric parameters of the spring and the manufacturing method includes a heat treatment procedure, including, where two of the plumbing system in spring specified requirements have not changes, so spring allowable stress design workers hanger spring material primarily choose to determine the allowable stresses calculate various specific geometry and manufacturing methods, the Wei material means spring hangers in a specified condition Long-term use without fail the maximum allowable stress on plumbing curve spring hanger and hanger for the installation of the pipeline option has a very important role in linear pipe hangers stiffness due to stable and simple to manufacture, and therefore the most widely used, cylindrical compression or tension spring to fall into this category, but it also limited to an average diameter of external load does not exceed the elastic limit of the material and the spring constant is the appropriate time, if the external load exceeds the elastic material limit, the material will produce yield and lead to permanent deformation, even after shed load, spring can not be restored to its original position, which is why the pipe plant in the choice of spring hangers heat treatment process, the elastic limit as to the material The main considerations of the reason those incremental type characteristic curve spring hanger, when the plumbing external load reaches a certain level, the stiffness increases dramatically, thus helping protect the spring. For example hanger internal conical spiral spring, due to the different average diameter of each circle, spring is not the same index, the index is larger than the lower end of the upper end of the rear springs under load, deformation start until the bottom of the first and tight as a whole, so that the actual reduction in the effective number of turns of the spring, then bear deformation are those of the turns of the spring index is small, and thus dramatically increase the stiffness on those leaving the loading and unloading of the friction loss characteristic curves do not coincide plywood, ring and disc spring hanger pipeline equipment, It is characterized by the use of damping or cushioning device is made.