Selection of spring shock absorber in various equipment
In steel plants, power plants, oil plants, cement plants and other industries, there are various types of pipelines and equipment, and they will choose to add some components for maintenance according to the request. These industries have a high demand for pipelines, so most of them use spring dampers in the center. But spring damper
There are many varieties, so there is a request for its selection.
1. The outer surface of shell and spring shall be treated by: paint baking, galvanizing, zinc aluminum treatment and other methods to prevent the vibration isolator from rusting in a short time, thus affecting the service life of the shock absorber. It is better not to use the products treated by paint spraying;
2. The longitude between the operating frequency of the equipment and the natural frequency of the spring damper shall be greater than
3. How to ensure that the vibration isolation efficiency is above 85% under this condition;
4. The spring degree stiffness and vertical stiffness shall be greater than or equal to 1, and the ratio between the requested spring diameter and the spring height after the rated negative pressure shall be greater than 0.7, so as to ensure the stability of the spring damper degree direction;
5. Suitable spring shock absorber shall be selected as the guide line of the instant device.
As long as the right spring damper is selected, it can play its role more effectively. If the wrong model is selected, it may not only fail to maintain, but may backfire, causing unnecessary damage to pipes or equipment.

In order to solve the problem of open laying of steam pipeline, the presentation of directly buried steam pipeline product technology has solved the problem of open laying of urban steam pipeline. The central problem of steam direct burial technology is still the problem of pipeline thermal compensation. Natural compensation or gate type compensation is difficult to implement due to the dense vertical and horizontal open pipe network of urban roads. If the rotary compensator is used in the open layout, which occupies a large open space, it is arranged on the ground. The rotary compensator is arranged on the ground, which is not allowed by the urban planning and city appearance supervision; The bellows compensator overcomes the defects of the above two compensation methods, and has become the main advanced and reliable thermal compensation method for directly buried steam pipelines. According to the national standards for urban heat supply network design and construction, and the corrugated pipe compensator manufacturer's requirements for the layout of the corrugated pipe compensator, the layout of the corrugated pipe compensator can refer to the following layout criteria:
1 One end of bellows compensator shall be arranged close to the fixed point,
2. Before and after the fixed point, the bellows compensator shall be symmetrically arranged to reduce the thrust on the fixed point, The main purpose is to avoid the axial instability of bellows compensator caused by pipeline bending and radial offset. The specific layout of bellows compensation is shown in Figure 1. There is a continuous line between the two fixed points, and there should be no turning angle or slope change within 12m of the interval compensator, so as to avoid the generation of lateral force on the bellows compensator. Due to the thin pipe wall of the bellows compensator, its anti torque ability is poor, and it is very easy to lose stability, which will cause damage to the bellows compensator and affect the safe and economic operation of the steam pipeline.
4 The distance L between the two fixed points can be determined according to the compensation amount of the bellows compensator and the steam temperature, but it should not exceed the maximum compensation amount allowed by the bellows compensator, and a certain margin should be left. When the design is selected, the maximum compensation amount of the pipeline is only about 80% of the compensation amount of the bellows compensator, so as to ensure the service life and safe operation of the bellows compensator.