How much is the chiller unit price?
The price of water chillers ranges from 10000 to 100000 yuan.
The FL +5°C ~ +35°C Water Chillers is a kind of water cooling equipment. The water chiller is a kind of cooling water equipment that can provide constant temperature, constant flow and constant pressure.
The working principle of the chiller is to inject a certain amount of water into the water tank in the chiller, cool the water through the chiller cooling system, and then send the low temperature cooling water into the equipment to be cooled by the water pump.
The chilled water of the chiller will take away the heat and then return to the water tank after the temperature rises to achieve the cooling effect. The cooling water temperature can be automatically adjusted according to requirements, and long-term use can save water. Therefore, the chiller is a standard energy-saving equipment.
1. What is the maintenance content of the cooler?
Minor repair contents: remove the heads or pipe boxes at both ends of the cooler; Clean and clean the internal surface of the pipe and foreign matters in the shell. And check the corrosion, rust, crack, sand hole and other defects of the covers and pipe boxes at both ends of the cooler; Conduct pressure test and leakage test for tube bundle and shell; Check bolts, insulation and corrosion protection; Conduct local thickness measurement.
Medium maintenance, including minor maintenance; Take out the tube bundle for cleaning, cleaning and cleaning, and check the deformation and bending of the heat exchange tube; Check the corrosion of baffle plate, baffle plate and pull rod bolts; Check the sealing surfaces of the cooler. The surface shall be free of scratches, pits and pitting.
Overhaul contents, including medium and minor repair contents; Comprehensively check the operation of the cooler, and conduct dye inspection on the weld between the tubesheet and the tube.
2. How to conduct leak test after cooler leakage?
In order to find out the leakage of the pipe, the first step is to carry out the hydraulic test. Generally, the external pressure test with pressure applied on the outside of the pipe is adopted. The method is to pass water into the shell, keep it for a certain time, visually check the leakage of pipes at the tube plates at both ends, and record the leakage of pipes.
The main corrosion parts of the cooler are the heat exchange tube, the connection between the tube and the tubesheet, the junction between the tube and the baffle plate, and the shell. The corrosion causes are as follows: due to the dirt, scale in the medium and the eddy current wear of the inlet medium, the pipe is easy to corrode, especially the pipe end corrosion at 40~50mm of the pipe inlet end, which is mainly due to the eddy current disturbance of the fluid at the dead corner.
Due to the poor quality of the welding seams of the shell and accessories, corrosion is also easy to occur. When the shell medium is electrolyte, the shell material is carbon steel, and the baffle plate for the tube bundle is copper alloy, electrochemical corrosion is easy to occur and the shell is corroded and perforated.