摘要:
A process is disclosed for inspecting subsidiary canals that branch off from a main drain. A camera probe (24) is deflected from the main drain pipe (10) into the branching off subsidiary, canal pipe (12) by means of a deflecting frame (22; 76; 96). The process is characterized by a propulsion by reaction of the camera probe (24), a fluid under pressure being supplied to reaction jets (34; 90) mounted on the camera probe so as to drive the latter into the subsidiary canal pipe (12).
摘要:
A method for generating a jet of dry ice particles, in which liquid carbon dioxide is expanded in an expansion space (12) in order to form dry ice particles which are then introduced into a flow of a carrier gas, and the discharge of the dry ice particles from the expansion space (16) is throttled by a constriction (20, 26; 28; 30; 32; 36; 38).
摘要:
Blasting method for cleaning surfaces, wherein a carrier gas is supplied under pressure through a blasting line (10) to a blasting nozzle (14), and liquid CO2 is supplied through a feed line (32), is transformed into dry snow through expansion and is fed into the blasting line (10), characterised in that CO2 from the feed line (32) is introduced into the blasting line (10) through an expansion volume (34) having an enlarged cross section.
摘要:
A blasting device includes a flow passage (14) for a carrier gas, the flow passage (14) forming a blasting nozzle (12) at its downstream end, and a supply line (22) for liquid CO2, the supply line opening out into an expansion chamber (26) that is coaxially accommodated in the flow passage (14), the expansion chamber (26) being formed by a pipe (20) that is held at its upstream end by a holder (18) which is passed by the flow of carrier gas in the flow passage, and in that the supply line (22) extends through the holder (18) in transverse direction of the flow passage and opens into an expansion valve (24) that extends in parallel with the axis of the flow passage (14).
摘要:
A method for generating a jet of dry ice particles, in which liquid carbon dioxide is expanded in an expansion space (12) in order to form dry ice particles which are then introduced into a flow of a carrier gas, and the discharge of the dry ice particles from the expansion space (16) is throttled by a constriction (20, 26; 28; 30; 32; 36; 38).
摘要:
A method for cleaning surfaces of a finned heat exchanger, wherein compressed air and water are used for cleaning and the compressed air is supplied to a jet nozzle (1), which has a section (7) converging to a constriction (6) and a subsequent diverging section (8), and the water or another liquid substance is fed into the flow of compressed air preferably upstream of the jet nozzle (1), or in a different embodiment upstream of, in or downstream of the constriction (6) in the jet nozzle. The jet nozzle (1) is directed at the cavity in a finned heat exchanger formed by the fins. The jet penetrates the cavity between adjacent fins for the purpose of cleaning the fin surfaces.
摘要:
The invention relates to a method for cleaning filters (22) which are designed as solid bodies having pores and/or having channels which are open towards the surface, by blasting using a blasting medium, characterised in that the blasting medium is gaseous and contains solid or liquid blasting agents, if appropriate in the form of substances having a boiling point of no more than 140° C., the blasting medium is accelerated in a jet nozzle (16, 18) so that it strikes the filter (22) at least at almost the speed of sound, and during blasting the filter (22) is disposed in front of an intake opening (34, 34′) which draws in the blasting medium as well as ambient air.
摘要:
A blasting device includes a flow passage (14) for a carrier gas, the flow passage (14) forming a blasting nozzle (12) at its downstream end, and a supply line (22) for liquid CO2, the supply line opening out into an expansion chamber (26) that is coaxially accommodated in the flow passage (14), the expansion chamber (26) being formed by a pipe (20) that is held at its upstream end by a holder' (18) which is passed by the flow of carrier gas in the flow passage, and in that the supply line (22) extends through the holder (18) in transverse direction of the flow passage and opens into an expansion valve (24) that extends in parallel with the axis of the flow passage (14).
摘要:
A method and apparatus for cleaning pipes with the aid of a blasting medium in which a deflecting member surrounding a nozzle is blown through a pipe by the blasting medium blowing through the nozzle. The movement of the deflecting member and nozzle can be controlled with either a draw-rope from the upstream end of the pipe or a rod from the downstream end. Dry ice, sugar, or chemical agents may be added to the blasting medium as an blasting means.