Apparatus and method for jetting a cable into a duct
AssigneePlumettaz Holding S.A.
InventorWillem GRIFFIOEN
Life of this patent
Estimating the term…
Abstract
Method for installing an elongated element into a duct (6), comprising the steps of: pushing the elongated element into the duct (6) through a pressure chamber (12), introducing pressurized fluid into the duct at a nominal pressure, applying a driving force (Fa), the method comprises the steps of: monitoring at least fluid pressure (pd) into said duct (6) and said driving force (Fa), reducing said fluid pressure (pd) to a predetermined value lower than the nominal pressure,
Claims20
A method for installing an elongated element into a duct, comprising the steps of:
- inserting the elongated element into the duct through a pressure chamber located at an entry of the duct, by applying a driving force (Fa) to the elongated element, resulting in an effective pushing force (F2eff) downstream the pressure chamber,
- introducing pressurized fluid into the duct at a nominal pressure, through the pressure chamber,
- wherein, after an instant when said elongated element has entered the duct and before an instant when said elongated element reaches a final position into the duct, the method comprises the steps of:
- monitoring at least fluid pressure (pd) into said duct and said driving force (Fa)
- reducing said fluid pressure (pd) to a predetermined value lower than the nominal pressure, in relation to said driving force (Fa).
An apparatus for installing an elongated element into a duct, comprising:
- a pressure chamber connected to an entry of the duct, and arranged to be pressurized at a nominal pressure,
- a driving unit arranged to apply a driving force (Fa) to the elongated element to insert the elongated element into the duct, through the pressure chamber,
- a monitoring unit, arranged for monitoring at least the duct pressure and the driving force (Fa),
- a control unit arranged to automatically reduce the duct pressure in relation to said driving force (Fa).
Dependencies are inferred from the claim text.