How to replace the filling in the cooling tower
How to replace the filling in the cooling tower
The cooling tower should be shut down and cut off for power and water supply when replacing the filler.
Cooling tower fill replacement steps are as follows:
a. Before construction, protect, isolate and list other equipment on site; protect other components in the tower to prevent damage.
b. To remove the filler of the old cooling tower, it is necessary to turn off the power of the motor, remove the coaming of the cooling tower, remove the old filler, clean up the garbage in the tower, and clean up the site.
c. Filler bonding. Due to the large amount of filler bonding, ensure that there is enough space for the filler to be placed during the curing of the adhesive. During the bonding process, the contact point of the filler is on the same level to ensure that the filler is in the crimping process. The contact point is evenly stressed.
d. Clean up the floating dust and garbage on the internal parts of the cooling tower, and stack the fillers in the cooling tower in sequence. During the stacking process, it is strictly forbidden to trample on and squeeze the fillers vigorously to ensure that each stack of filler blocks in each layer is neat and tight. The corners and columns are tight and seamless, and the reinforcement of the filling part of the cooling tower is restored.
e. When installing, pay attention to the up and down direction of the assembly block. The top surface of each layer needs to be laid flat, and the layers must be cleaned to prevent debris from clogging.
f. When installation and other work need to work on the filler, it must be operated on a flat plate, and it is strictly forbidden to step on it directly.
g. In the process of construction, assembly and installation, it is strictly forbidden to carry out welding work above the filling of the cooling tower, and fire prevention measures should be taken when necessary. After the installation is completed, take out all the construction tools and auxiliary installation facilities in the cooling tower and hand over the construction completion plan, and the entire cooling tower filling replacement step is completed.
Bonding and installation of water spray filler:
a. Select the bottom of the tower for bonding assembly according to the actual situation on site. The bonding of the water-sprinkling filler should be firm, and immediately press it with a flat plate after assembling a group to prevent degumming caused by the warping of the forming sheet itself.
b. After the bonding is dry, it can be moved and placed on a flat ground. The stacking height should not exceed 2 meters to prevent long-term exposure to the sun.
c. When the assembly block is installed, the upper and lower adjacent layers are arranged orthogonally and perpendicular to each other. The installation work is carried out in partitions, laid neatly, the blocks are tightly packed, and the irregular gaps such as corners, columns, towers, etc. Cut to ensure neat laying and tight coverage, with the largest gap not exceeding 20mm.
d. During the installation process, clean up the packing layers and layers in time without leaving scattered debris.
e. After the filler is installed, when it is necessary to work on the filler, it must be covered with wooden boards, and it is strictly forbidden to step on it directly.
f. When installing, send a special person to be responsible for checking the quality, and make a record of construction acceptance to ensure the quality of the installation.
All installation and construction personnel should have qualified experience, and those working at heights must fasten their seat belts, and their age must be within the specified range.
All installation and construction personnel have received three-level education, have sufficient safety protection awareness, and are familiar with the specific safety requirements of this profession. Construction personnel entering the site: all wear safety helmets, and all electromechanical equipment should be managed and operated by special personnel. It is strictly forbidden to stand under the hoisting port. During the construction site, a part-time security inspector is guaranteed to check the safety situation every day. Do a good job of safety production progress, keep a record account, and ensure that no safety accidents occur during installation and construction. It is strictly forbidden to throw objects at high altitude. The installation and construction personnel must fasten the safety belt and hold the safety rope while walking along the beam. Check whether the insulation of the on-site power line is good. The electric tool must be equipped with a leakage protector, and it is not allowed to connect the power line without permission.
5. Quality control
The packing specification is Siliangji 750*800 and 750*400 paste packing. The packing is the main heat exchange module of the cooling tower, which has a great influence on the cooling performance of the cooling tower. Our company’s packing, the film thickness is 0.3mm (±0.05mm), The glass fiber pressure is ≥350kg/m2, and its physical performance index conforms to the provisions of DL/T 742-2001 'Technical Conditions for Plastic Components of Cooling Towers' and GB7190.2-2008 'Glass Fiber Reinforced Plastic Cooling Towers' of the Electric Power Planning Bureau of the Ministry of Energy; The modified PVC film filler selected by the company has uniform plasticization, no cracks, good toughness, impact resistance, low temperature resistance of -20°C and high temperature of 55°C, its oxygen index is 42, and the flat compressive strength of the packing block is large (≥300 kg/m2 ), good flame retardant performance, and long anti-aging life; the sheet type has passed the comprehensive test of the Thermal Engineering Institute, and has the advantages of small airflow resistance, large specific surface area, good hydrophilicity, and large heat dissipation coefficient. Under normal use conditions, the service life is more than 10 years.