Fluid jet lance

摘要

A fluid jet system providing a hydraulic induction manifold for at least two valves. The manifold is positioned “upstream” of an abrasives holding tank, so that no abrasive material flows through the valves and the manifold. The valves and the manifold provide pressurized fluid for at least two different flows: (1) a primary fluid flow and (2) an abrasive material flow through the abrasives holding tank. The two flows are merged again at a junction to provide a fluid flow having a predetermined abrasive-to-fluid mixture ratio. The manifold balances the pressure of the two different flows using a preset geometric relationship between the two different output flow paths associated with the valves.

主权项

1. A fluid jet lance comprising:
a lance hose configured to couple to a fluid source adjacent a first end of the lance hose, wherein the lance hose is configured to transport a pressurized fluid flow; a lance barrel having a distal end and a proximal end, the lance barrel being configured to receive the lance hose such that the lance hose extends through the barrel between the distal end and the proximal end; an anchor point adjacent the distal end of the lance barrel configured to fixedly secure a second end of the lance hose to the distal end of the lance barrel; a nozzle coupled to the anchor point adjacent the distal end of the fluid jet lance;an offset fixture anchored between the nozzle and the lance hose, wherein the offset fixture is configured to hold the distal end of the lance barrel away from an adjacent surface and steady the fluid jet lance against the surface when the distal end of the fluid jet lance is positioned against the adjacent surface;
a first selector configured to cause an additive-entrained fluid to flow through the lance hose; and a second selector configured to cause a primary fluid to flow through the lance hose; andwherein the additive-entrained fluid includes a combination of water and one or more of an abrasive material and foam.