A hydrodynamic apparatus for cleaning channels and for monitoring channels is provided for pipes and channels. A disadvantage of all conventional bottom floor cleaners, flushing heads, and channel-cleaning nozzles is that during the cleaning process no observation and determination of the soiling state or, respectively, of the cleaning state of the channel and no recognition of damaged areas in the channel is possible. According to the invention, a monitoring unit (6) is installed selectively in or at the channel-cleaning apparatus. For this purpose, for example, a hollow space (11) is furnished at the bottom floor cleaner (S), wherein the monitoring unit (6) is partly integrated into the hollow space (11). The monitoring unit (6) exhibits a camera module (7) or two camera modules (7a and 7b). A video emitter (15) is coordinated to each camera module (7). The transmission to a video receiver (V) is performed without cable wireless from the video emitter (15). The cleaning process can be followed in a monitor (M). As desired, also ballast material (12) can be filled into the hollow space (11).
A pipeline pig that is moved by pressurized gas flow and that provides for distribution of treating liquid subsisting in the lower portion of the pipeline, having a pig body with a nose cone at a foward end thereof, centralizers affixed to the pig body by which it is supported in the pipeline, a bypass passageway within the nose cone communicating with the pipeline interior, a siphon passageway within the nose cone communicating with a lower portion of the pipeline interior and therby with any liquid subsisting therein and having an outlet end, and a venturi in communication with the siphon passageway and the bypass passageway, gas flowing through the bypass passageway serving to draw liquid from the lower portion of the pipeline through the siphon passageway whereby the liquid is discharged form the siphon passageway outlet end onto ineterior surfaces of the pipeline.
A method of distributing liquid present in the lower portion of a gas pipeline to the interior upper surface of the pipeline including the steps of passing a pig having a venturi therein, through the pipeline, the venturi being actuated by gas pressure taken from within the pipeline, the pig being asymmetrically weighted providing a pig upper portion and a pig lower portion, siphoning liquid from a lower interior portion of the pipeline through the venturi, storing liquid drawn from a lower portion of the pipeline in a reservoir carried by the pig, distributing siphoned liquid from the reservoir onto the pipeline upper interior surface and wherein the gas pressure is taken from a rearward portion of the pig.
The invention relates to an arrangement for inspecting sewer pipes or the like. The arrangement comprises a flush unit (8) that has ample room to move in a sewer pipe (10) and at the proximal end (E.sub.P) thereof substantially backwards pointing nozzles (18), a flexible flush hose (9) and liquid pressurizing means (20) in order to create a flow of the pressurized liquid (V.sub.H) through the nozzles to the sewer pipe. In addition, the arrangement comprises a camera unit n (1) including: a fish-eye lens or another lens, and in front of the lens a rotation symmetrical curved mirror, these constituting optical image forming means (5), a number of radially outwards pointed lenses in order to create an image of the circumferential zone (K.sub.i) on the inner surface of the sewer pipe; an image detector and illumination means (2). Further the arrangement includes automatic locking means (4a, 4b) for a mutual, detachable fastening of the camera unit (1) and the flush unit (8) successively in order to form a scanner combination (13), so that the optical image forming means (5) are located at the distal end (E.sub.D) of said combination.
A light weight vehicle adapted to conduct and assist cleaning and video inspections of sewer lines. The vehicle is configured to be light and maneuverable. The vehicle is equipped with inspection cameras and support equipment that are positioned such that the operator can conduct the inspection from inside the vehicle. The vehicle may also include a telescoping camera boom that enables an operator to inspect the inside of manholes. The vehicles includes sides and a roof that provides protection for the operators, equipment, and paperwork.
