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US 2018/0321001 A1Published application
Heat exchanger cleaning system with cable and turbine rotation
AssigneeKing Fahd University of Petroleum and Minerals
InventorsJihad Hassan Alsadah, Esmail M.A Mokheimer
Life of this patent
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Abstract
An online cleaning system for tube and shell heat exchangers is presented. The system includes a positioner, a plunger, an umbilical cleaner, and a motor. The cleaning system cleans the tubes while the heat exchanger remains in operation. The cleaning system locates and isolates a single tube via rotating and translating mechanical actions and inserts the umbilical cleaner into the tube, which may clean the tube via rotational movement or via sonication. The cleaning system may further clean the outer surface of the tubes of the heat exchanger.
Claims8
1:
- An online cleaning system with connected cleaning elements configured to clean an online tube and shell heat exchanger comprising:
- a positioner that locates and isolates a tube of the online tube and shell heat exchanger, wherein the positioner includes an annular rail sliding on a fixed rail support fixed on a face of the online tube and shell heat exchanger;
- an angular selector that rotates the annular rail to a rotational position according to a (r, θ) coordinate selection system;
- a plunger that is connected to the positioner that is configured to attach to the tube of the online tube and shell heat exchanger while the online tube and shell heat exchanger is online;
- and
- a turbine, at least two moving guides and a plurality of cleaning elements connected by a cable that is configured to pass through the plunger and into the tube of the online tube and shell heat exchanger and is mechanized by circulation of a fluid passing through the tube while the online tube and shell heat exchanger is in operation, wherein the moving guides are connected ahead and behind the turbine, and the cleaning elements are connected at the end of the cable.
3 more elements
2-3. (canceled)
4:
- The online cleaning system of claim 1, wherein:
- the circulation of the fluid passing through the tube creates a rotation action by the turbine to clean the tube.
5:
- The online cleaning system of claim 1, wherein:
- the plunger includes a motor positioned to extend a length of the plunger,
- the plunger comprises a soft material at a base configured to seal with a base plate of the heat exchanger;
- and
- the plunger connects the tube to an external circulation system.
2 more elements
6-7. (canceled)
8:
- The online cleaning system of claim 1, wherein:
- the plurality of cleaning elements comprises at least one selected from the group consisting of
- a nozzle and
- a wire brush.
1 more element
9:
- The online cleaning system of claim 1, further comprising:
- a filter attached externally to the online tube and shell heat exchanger, wherein the filter is configured to filter contaminates from the fluid.
10-13. (canceled)