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US 2022/0146034 A1Published application
Systems and methods for a water hammer arrestor
AssigneeGeorgia Tech Research Corporation
InventorsKenneth A. Cunefare, Nathaniel R. Pedigo, Ana Jafarinia, Anna Marie Pinion, Max Musser, Rachael Dziedzic, Sriram Iyer
Life of this patent
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Abstract
A fluid system can have a water hammer arrestor including a resilient insert having an outer surface. The resilient insert can be operable to dampen a pressure spike in the fluid that exceeds a static pressure range, providing effective water hammer arrestment that without the resilient insert, would have occurred in a flowing fluid with the pressure spike. The static pressure range can be up to about 100 psig.
Claims32
A fluid system comprising:
- a water hammer arrestor comprising:
- a resilient insert having an outer surface;
- an outer shell extending for a length of the outer surface of the resilient insert;
- and
- a permeable cage extending along the outer surface of the resilient insert and positioned between the outer shell and the resilient insert;
- wherein the resilient insert is operable to dampen a pressure spike in the fluid that exceeds a static pressure range, providing effective water hammer arrestment that, without the resilient insert, would have occurred in a flowing fluid with the pressure spike;
- and
- wherein the static pressure range is less than about 100 psig.
5 more elements
(canceled)
-10. (canceled)
A fluid system comprising:
- a water hammer arrestor comprising:
- a resilient insert having an annular cross-section and comprising:
- an outer surface;
- a first discrete resilient insert portion;
- and
- a second discrete resilient insert portion;
- wherein the resilient insert is operable to dampen a pressure spike in the fluid that exceeds a static pressure range, providing effective water hammer arrestment that, without the resilient insert, would have occurred in a flowing fluid with the pressure spike;
- wherein the static pressure range is less than about 100 psig;
- wherein the first discrete resilient insert portion and the second discrete resilient insert portion are operable to physically abut one another, preventing radial compression of the resilient insert that would lead to ineffective water hammer arrestment;
- and
- wherein each discrete resilient insert portion comprises a partially annular cross-section.
8 more elements
A fluid system comprising:
- a water hammer arrestor comprising:
- a resilient insert having an outer surface and comprising:
- a first discrete resilient insert portion;
- and
- a second discrete resilient insert portion;
- wherein the resilient insert is operable to dampen a pressure spike in the fluid that exceeds a static pressure range, providing effective water hammer arrestment that, without the resilient insert, would have occurred in a flowing fluid with the pressure spike;
- wherein the static pressure range is less than about 100 psig;
- wherein the first discrete resilient insert portion and the second discrete resilient insert portion are operable to physically abut one another, preventing radial compression of the resilient insert that would lead to ineffective water hammer arrestment;
- and
- wherein each discrete resilient insert portion comprises:
- a polymeric matrix having a stiffness;
- and
- microspheres dispersed within the polymeric matrix;
- wherein the microspheres are pressurized to an internal pressure of 0.1 MPa or greater;
- and
- wherein the stiffness of the polymeric matrix of at least one of the discrete resilient insert portions is different from another of the discrete resilient insert portions.
13 more elements
A water hammer arrestor system comprising:
- an upstream portion of a fluidic conduit;
- a water hammer arrestor positioned downstream of the upstream portion of the fluidic conduit;
- and
- a downstream portion of the fluidic conduit and positioned downstream the water hammer arrestor;
- wherein the water hammer arrestor comprises:
- a resilient insert having an annular cross-section, an outer surface, and an inner surface, the inner surface defining therethrough a channel, the channel having an inner diameter substantially similar to an inner diameter of the upstream and downstream portions of the fluidic conduit;
- and
- an outer shell extending a length along an outer surface of the resilient insert;
- wherein the resilient insert comprises a first discrete resilient insert portion and a second discrete resilient insert portion that are operable to physically abut one another, preventing radial compression of the resilient insert that would lead to ineffective water hammer arrestment;
- wherein each discrete resilient insert portion comprises a partially annular cross-section;
- wherein the resilient insert is operable to dampen a pressure spike in flowing fluid that exceeds a mean static pressure, providing effective water hammer arrestment that without the resilient insert, would have occurred in a flowing fluid with the pressure spike;
- and
- wherein the mean static pressure is less than about 100 psig.
10 more elements
(canceled)
A fluid system comprising:
- a water hammer arrestor comprising:
- a resilient insert having an outer surface and comprising at least a first discrete resilient insert portion and a second discrete resilient insert portion that are operable to physically abut one another;
- wherein the resilient insert is operable to dampen a pressure spike in fluid that exceeds a static pressure range, providing effective water hammer arrestment that without the resilient insert, would have occurred in a flowing fluid with the pressure spike;
- and
- wherein each discrete resilient insert portion comprises:
- a polymeric matrix having a stiffness;
- and
- microspheres dispersed within the polymeric matrix;
- wherein the microspheres are pressurized to an internal pressure of 0.1 MPa or greater;
- and
- wherein the stiffness of the polymeric matrix of at least one discrete resilient insert portion is different from another discrete resilient insert portion.
8 more elements
-49. (canceled)
A method for manufacturing an in-line water hammer arrestor, the method comprising:
- providing a resilient insert having an outer surface and an inner surface, the inner surface defining therethrough a channel for a fluid flowing along a length of the resilient insert within a static pressure range, the resilient insert being operable to dampen a pressure spike in the fluid that exceeds the static pressure range and provide water hammer arrestment that, without the resilient insert, would have occurred in the flowing fluid with the pressure spike;
- providing an outer shell extending along the outer surface of the resilient insert, the outer shell having an integral fluid connector, and an inner wall, the integral fluid connector disposed proximate an upstream end of the outer shell;
- providing a restraining insert comprising a permeable tube operable to enable fluid communication between the resilient insert and the channel;
- providing a discrete fluid connector disposed on a downstream end of the outer shell;
- inserting the restraining insert within the outer shell;
- inserting the resilient insert into the outer shell;
- and
- attaching the discrete fluid connector to the downstream end of the outer shell.
5 more elements
-57. (canceled)
A method for manufacturing a side-branch water hammer arrestor, the method comprising:
- providing a resilient insert having an outer surface;
- providing an outer shell having an opening that connects to an inner surface configured to receive at least a portion of the resilient insert;
- providing a fluid connector;
- inserting the resilient insert within the outer shell;
- and
- affixing the fluid connector to the opening of the outer shell providing fluid connectivity for fluid flow into and out of the resilient insert.
3 more elements
-65. (canceled)
Dependencies are inferred from the claim text.