Manipulator for working in a heat exchanger
US4393920A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 17, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Feb 17, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a vertical type heat exchanger including a water chamber delimited by a drum end plate and a header plate on which a large number of heat transfer tubes are arrayed, a novel manipulator for working in the heat exchanger is provided such that a support frame is disposed within the water chamber, a base end portion of a freely extensible and contractible main arm which is rotatable about its base end portion and vertically swingable about a fulcrum at its base end portion, is mounted on the support frame, a base end portion of a sub-arm which is rotatable about its base end portion and vertically swingable about a fulcrum at its base end portion and also which can be positioned in parallel to the header plate, is mounted at the tip end portion of the main arm, a vertically movable clamp shaft which can be inserted into the heat transfer tube is provided coaxially with the rotational axis of the sub-arm, and a position detector for detecting the position of the clamp shaft so as to assist in positioning the clamp shaft so as to become coaxial with the heat transfer tube, is provided on the clamp shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.