Ball cleaning system for condenser tubes metallurgical enterprises
Purpose and Scope
Ball cleaning system (BCS) designed to prevent the deposition of organic and mineral substances and scale formation on the internal surfaces of the cooling tubes of condensers (heat exchangers) by passing through them during operation of condenser of sponge rubber balls.
Constituent elements of BCS
Depending on the number of blocks in the heat exchanger BCS consists of one or two or more complexes of the same equipment. Each set usually includes a pre-filter, installed in the penstock, and a circuit of balls, comprising: a pump pumping balls, loading device of balls, balls in the input device penstock and device collecting balls installed in the drainage water line.
However, BCS metallurgical enterprises in technically justified cases, one pre-filter and one pump pumping balls can be applied to two or more complexes of the equipment included in BCS. In such cases, the system introduces additional elements - flow totalizer, couplers, allocators.
Description of the operation BCS
BCS principle is to provide circulation through condenser tubes of porous rubber ball having a diameter of 1-2 mm greater than the internal diameter of the tubes. When moving the tubes from their beads removed any internal surfaces in their initial deposition stage, preventing their further growth. Schematic diagram of the BCS and the general principle of operation is similar to BCS for thermal power plants.
BCS for the condenser 25-KSC-1 turbine metallurgical plant
In BCS used one pump for pumping balls BCS two complexes equipment, included in the scheme flow totalizer and the flow splitter. In BCS used pre-filters of FSC series, the other elements are the same elements BCS for thermal power plants.
In the loading device 7 is loaded portion of porous rubber balls, the pump starts pumping balls 3 and creates a circulation of porous rubber balls along the contour: loading device 7 - splitter 5 - input device balls 6 - condenser tube bundles - device collecting balls 2 - summer flows transfer 4 - pump balls 3 and along the contour again. Balls passing through a condenser tube, removing any precipitate at the beginning of their formation, maintaining thus the purity of the condenser tubes in the initial state.
After a set time balls are caught in loading device of balls 7 and held it until the next time the system. If necessary, set a constant circulation of balls.
BCS work in semi-automatic mode, controls, automation and control unit 10. For BCS can be used balls, manufacturers of Ukraine, Germany or Russia. Approximate resistance balls - about 300 hours (depending on the condition of the tubes). With no further purification BCS tubes is not needed.
Photo of elements BCS
Equipment set experimental industrial sample SSHO to end cooler VOT-380 turbocharger TK-1500 (1700)