High energy loss rolled strip fluid control device

Claim 2

In an energy loss fluid control device adapted for installation in a fluid transfer system to create a frictional drag and pressure drop on the fluid for dissipating potential energy of the fluid without developing noise, the improvement which comprises a cage receiving the fluid radially therethrough composed of a tubular coiled punch strip with a plurality of tightly wrapped overlying layers with the punchings of an underlying layer registering with the punchings of an overlying layer and arranged relative to each other in the successive layers to provide a myriad of axially separated flow paths connecting the inner and outer peripheries of the tubular coil and with the punchings in adjacent layers arranged so that each flow path has abrupt turns whereby fluid passing through the cage is divided into a myriad of small streams and each stream must traverse a flow path with abrupt turns before it can exit from the cage, whereby no path extends directly between the interior and exterior of the cage, and no path communicates with an adjacent axial path.

Claim 3

The device of claim 1 where the punchings are arranged to form axially spaced longitudinal rows of longitudinally spaced orifices alternating with elongated slots and with the longitudinally successive rows of orifices being offset to register with the intervening slots in axially displaced relation.

Claim 4

The device of claim 1 wherein the punchings of the strip form alternating rows of orifices and slots arranged in axially and longitudinally offset relationship to cooperate with the slots in forming flow passages with axial and circumferential turns.

Claim 5

The device of claim 1 wherein the coiled punch strip has at least five layers in tight overlying relationship.

Claim 6

A cage for an energy loss fluid flow control device which comprises a tubular coiled metal strip having a plurality of tightly wrapped overlying layers punched to provide a plurality of axially separated alternating orifices and circumferentially elongated wide channels communicating with the orifices in adjacent layers only in off-set relation to cause fluid flowing through the cage to be sub-divided into a myriad of streams each of which has abrupt turns for dissipating energy from the fluid, whereby no path extends directly between the interior and exterior of the cage and no path communicates with an adjacent axial path.

Claim 7

A cage for an energy loss fluid flow control device which comprises a tubular coiled metal strip having a plurality of tightly wrapped overlying layers punched to provide a plurality of axially separated alternating orifices and circumferentially elongated wide channels communicating with the orifices in adjacent layers only in off-set relation to cause fluid flowing through the cage to be sub-divided into a myriad of streams each of which has abrupt turns for dissipating energy from the fluid, whereby no path extends directly between the interior and exterior of the cage and no path communicates with an adjacent axial path.

Claim 8

The cage of claim 5 wherein the orifices are arranged in circumferential rings in axially spaced relationship with the wide channels between the orifices having their top portions aligned with an underlying ring and their bottom portions aligned with an overlying ring.

Claim 9

The cage of claim 5 wherein the channels are at least twice as wide as the orifices.

Claim 10

THe cage of claim 5 wherein the orifices are elongated slots.

Claim 11

The cage of claim 5 wherein the orifices are circular holes.

Claim 12

The cage of claim 5 wherein the coiled strip has at least five layers.

Claim 13

An energy loss silent valve which comprises a casing defining a fluid flow passage, a valve plug controlling flow through said passage, a cage surrounding said plug, said cage being a tubular coiled punched metal strip with a plurality of layers in tightly wrapped relation, the inner layer of said coiled strip having rings of circumferentially spaced orifices in axially spaced relation adapted to be covered and uncovered by said plug, the layer of said coiled strip surrounding said inner layer having circumferential slots with axial top portions aligned with the orifices in the inner layer, said coiled strip having a third layer surrounding the second layer with rings of circumferentially spaced orifices in axially spaced relation aligned with the axial bottom portions of the slots in the second layer, said coiled strip having a fourth layer surrounding the third layer with circumferential slots having axial bottom portions aligned with the rings of orifices in the third layer and axial top portions offset from said orifices, and said cage having a fifth layer overlying the fourth layer with rings of circumferentially spaced orifices in axially spaced relation aligned with the axial top portions of the slots in the fourth layer whereby the cage divides fluid flowing therethrough into a plurality of axially separated streams which must make abrupt turns in flowing through the cage, whereby no path extends directly between the interior and exterior of the cage, and no path communicates with an adjacent axial path.

Claim 14

An energy loss silent valve which comprises a casing defining a fluid flow passage, a valve plug controlling flow through said passage, a cage surrounding said plug, said cage being a tubular coiled punched metal strip with a plurality of layers in tightly wrapped relation, the inner layer of said coiled strip having rings of circumferentially spaced orifices in axially spaced relation adapted to be covered and uncovered by said plug, the layer of said coiled strip surrounding said inner layer having circumferential slots with axial top portions aligned with the orifices in the inner layer, said coiled strip having a third layer surrounding the second layer with rings of circumferentially spaced orifices in axially spaced relation aligned with the axial bottom portions of the slots in the second layer, said coiled strip having a fourth layer surrounding the third layer with circumferential slots having axial bottom portions aligned with the rings of orifices in the third layer and axial top portions offset from said orifices, and said cage having a fifth layer overlying the fourth layer with rings of circumferentially spaced orifices in axially spaced relation aligned with the axial top portions of the slots in the fourth layer whereby the cage divides fluid flowing therethrough into a plurality of axially separated streams which must make abrupt turns in flowing through the cage, whereby no path extends directly between the interior and exterior of the cage, and no path communicates with an adjacent axial path.

Claim 15

The valve of claim 11 wherein the slots in the cage are at least twice as wide as the orifices.

Claim 16

The valve of claim 11 wherein the orifices are circular holes.

Claim 17

The valve of claim 11 wherein the orifices in the cage are circumferentially elongated slots.