Flange machine standard

When designing spiral pipes, the design shall be based on such conditions as noise, materials, energy consumption, installation space, allowable wind speed, etc; Avoid sudden changes in wind speed and direction; The directional air duct is designed as a square, with the aspect ratio not exceeding 8:1. Generally speaking, it should be controlled within 4:1;

The spiral pipe shall be made of smooth air pipe; Due to the change of materials and the installation process, the difference between the actual resistance and the design resistance can be caused. Therefore, a certain safety factor should be considered when selecting fans and motors; Avoid conflicts between pipelines or other building facilities. If you are unavoidable, use smooth transitions. The length should be greater than 3,

When the wind speed in the air duct is high, the air duct is small, and the air duct is saved, so the construction space is small. However, if the wind speed is large, the system resistance is large, the fan pressure is large, the power consumption is large, and the noise is increased. If a lower wind speed is used, the opposite occurs. Therefore, economic wind speed value must be included in the wind speed value.

At present, spiral dirt is widely used in ventilation projects. Their appearance is of high quality. The inner wall lubricates the inner wall of the molded air passage, and the outer wall is smooth; The spiral distribution formed by the occlusion of the outer wall is uniform, so the strength of the normal reinforced rib is stronger than that of the popular bite tube.

As it is mechanical processing, it can reduce salary and operation error, and ensure strict wind, and the air leakage is far less than the current standard and specified value; The strength of the coil exhaust unit is relatively large, and the length of the air duct is larger than that of the traditional air duct in the same size coil thickness reduction model. The number of pipe sections of the same length has decreased significantly. In addition, there is a non flanged connection to reduce many raw data.