Online cleaning device for heat exchange tube of condenser

Abstract

The invention belongs to the field of cleaning, and provides an online cleaning device for a heat exchange tube of a condenser. The online cleaning device is mainly characterized in that: a conventional online cleaning mode is improved; a cleaning mechanism adopts a row of nozzles; the middle part of the row of nozzles is connected with a driving nut floating cavity body, and the end parts of therow of nozzles are connected with guide sleeve floating cavities; and a chemical cleaning agent gallipot is connected in series with a high-pressure water pipeline. The online cleaning device has theremarkable advantages of simple structure, running reliability, convenience for mounting and maintenance, high cleaning speed and good effects; moreover, the online cleaning device can be used for replacing rubber ball cleaning, also can be used together with the rubber ball cleaning and can realize all-round cleaning and the chemical cleaning of important parts.

Description

technical field [0001] The invention belongs to the field of operating machinery, relates to a cleaning device, and specifically proposes an online cleaning device for heat exchange tubes of a condenser. Background technique [0002] The condenser is an important heat exchange equipment in chemical, electric power and other industries. The internal heat exchange tube plays the role of steam-water heat exchange. The condenser is affected by the quality of cooling water and circulating water. Sludge will be generated in the heat exchange tube, which not only affects the heat exchange effect If the energy consumption of the turbine or steam turbine is reduced, the energy consumption of the turbine or steam turbine will increase. In severe cases, the heat exchange tube will be corroded and leaked, which will affect the steam and water quality and operation safety of the unit. [0003] Keep the heat exchange tubes of the condenser clean to ensure the normal operation of the unit....

AI Technical Summary

Problems solved by technology

[0005] First, the above-mentioned cleaning mechanism is placed on the top of the vertical guide rod through the rotating spray gun, connected with the water spray pipe assembly, and moves up and down, left and right, which belongs to point or sheet cleaning. For modern large-capacity units, there are multiple condensers The water inlet and outlet chambers and tens of thousands of heat exchange tubes are cleaned point by point (pieces). The cleaning device has a long operating cycle, low cleaning efficiency, and increased component wear

[0006] Second, it is difficult to position the spray gun to the heat exchange tube

The condenser water chamber is a closed large container with pressure water flowing. The cooling water quality is generally corrosive. The vertical guide rod is composed of one or more hydraulic cylinders. The up and down movement is controlled by the external hydraulic pipeline. Poor or corrosive, resulting in mechanical jamming or difficult positioning, and there are vertical and horizontal support frames inside the condenser, and multiple mechanisms are active for a long time, which is easy to collide with or wear out the water chamber support frame, thereby increasing the probability of device failure

[0007] Third, the base of the hydraulic cylinder and the supporting walking mechanism must occupy part of the upper, lower and left and right spaces, and there will be blind spots for cleaning the heat exchange tubes, which cannot guarantee all-round cleaning of the condenser

[0008] Fourth, dense scaling will occur during the operation of the condenser, and simple high-pressure water cleaning cannot guarantee the cleaning effect of the heat exchange tube

In addition, high-pressure water will generate a large reaction force after passing through the spray gun, and the corresponding measures are not considered in the device

[0009] Fifth, the structure of the device is more complicated, and the installation and maintenance are more troublesome

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