Membrane structure parking shed Before installation, the quality of components shall be checked. If the deformation and defects of components exceed the allowable value, they shall be treated. When installing steel columns, check whether the sizing blocks under the column baseplate are well padded and leveled to prevent the anchor bolts under the column baseplate from losing stability; Whether the control column is vertical and whether there is displacement. In the installation project, temporary support measures should be taken before the structure has formed a stable system. When the steel structure is installed to form a space fixed unit, and it is accepted as qualified.
The membrane structure parking shed requires the construction unit to timely pour the space between the column base plate and the top surface of the foundation with the expansion concrete. Also check the perpendicularity and overall plane bending of the main structure of the steel structure. When the equipment is running, highly adhesive particles gradually accumulate on the surface of the membrane. If the flow rate is assumed to be equal to or lower than the flow rate during operation, it is difficult to remove these contaminants from the membrane element. Therefore, a higher flow rate than normal operation shall be used for cleaning, and the flow rate of single diaphragm tube shall not exceed 15m3/h.
The flow of the cleaning pump of the membrane structure parking shed is fixed, and the pollution pressure of the membrane module is large, and the flow is small. In the early stage of cleaning, flow is the main and pressure is the supplement. Due to the resistance of dirt, the cleaning pressure is high and the cleaning flow is small. With the cleaning process, the pollutants gradually loosen, the membrane body is cleaned, and the membrane channel gradually slows down. The resistance decreases, the pressure decreases, and the flow increases. During operation, under polluted conditions, the greater the pressure, the greater the differential pressure. Under different inlet pressures, the differential pressure is not fixed. During the cleaning process, the pressure drop will decrease with the change of cleaning time.
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