Automatic online washing device and automatic online washing method of water cooling water chilling unit tube-shell heat exchanger rubber ball

Abstract

The invention discloses an automatic online washing device of a water cooling water chilling unit tube-shell heat exchanger rubber ball. The automatic online washing device comprises a ball collection tube, a ball storage tube, a ball injection ball and three-way ball valve; and the automatic online washing device is characterized in that a ball collection filter net is arranged in an inlet end of the ball collection tube, and a water getting ball-play-preventing filter net is arranged in the inlet end of the ball injection tube; a plurality of filter holes are formed in the ball collection filter net and the water getting ball-play-preventing filter net; two ends of the ball storage tube are respectively provided with three-way ball valve, and the ball storage tube is communicated with a first end of the three-way ball valve; a filter porous plate is also arranged between the ball storage tube and the three-way ball valve; a second end of the three-way ball valve I is communicated with the ball collection filter net, a third end of the three-way ball valve I is communicated with the ball injection tube; a second end of the three-way ball valve II is communicated with the ball collection tube, and a third end of the three-way ball valve II is communicated with the water getting ball-play-preventing filter net; the three-way ball valve is an L-shaped three-way ball valve, and the automatic online washing device can be widely applied to the fields such as energy, chemical industry, heating air conditioners and the like.

Description

technical field [0001] The invention relates to an on-line cleaning device and method for a heat exchanger, in particular to an automatic on-line cleaning device and a method for rubber balls of a shell-and-tube heat exchanger of a water-cooled chiller. Background technique [0002] With the progress of human civilization and the improvement of industrial level, the use of energy in modern society is becoming more and more sophisticated, and energy conservation and emission reduction are increasingly called by governments and people of all countries. Shell and tube heat exchangers are widely used in the energy and chemical industry as well as in the HVAC field. Scaling often occurs on the inner wall of the heat exchange tubes of many shell-and-tube heat exchangers that use water as the cooling medium in the tube side. Efficiency is reduced, resulting in a great waste of energy. [0003] The fouling treatment methods on the inner wall of shell and tube heat exchangers are g...

AI Technical Summary

Problems solved by technology

Among them, the rubber balls of the single-circuit system pass through the intermediate ball storage room from the water outlet of the heat exchanger to pause and then enter the water inlet of the heat exchanger or directly into the water inlet of the heat exchanger. This type of system will bring the hot water from the water outlet of the heat exchanger back to the The water inlet of the heat exchanger increases the heat transfer load of the main engine, and the system itself needs to overcome the large pressure difference resistance, which consumes a lot of energy and is very uneconomical

The second type of system is the double-circuit rubber ball cleaning system. The ball collecting circuit and the ball injecting circuit work alternately. The ball only draws cold water from the water inlet of the heat exchanger. This type of system has little effect on the heat transfer load of the main engine, but it requires more power sources (each circuit has a water pump), or more control valves (one pump) The pump switches the working circuit through several three-way valves), resulting in complex structure, high cost, large floor space and required installation space, and not very economical

However, due to the complex internal structure of this invention, there are defects such as bloated volume and large flow channel resistance, which further leads to problems such as high manufacturing cost, large space occupation, and large increase in resistance to the main pipeline system.

And due to its own structural limitations, it cannot adapt to the different spacing of the inlet and outlet pipelines of any shell-and-tube heat exchanger host

[0006] Various existing rubber ball cleaning systems, no matter single-circuit system or double-circuit system, have some or all of the following disadvantages: the device has complex structure, large volume, takes up a large space, is difficult to install on site, and consumes more energy. The resistance of the main pipeline system increases greatly

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