Check valve for charge tank
AssigneeUTILX Corporation
InventorsWilliam R. Stagi, James Steele
Life of this patent
Estimating the term…
Abstract
A method and apparatus are described to prevent the unwanted energizing of equipment not normally intended to be energized when delivering a fluid to an energized power cable. The method and apparatus relate to the installation of a fluid back-flow prevention device in the line or equipment carrying a fluid to the cable, and also providing a pressure relief device that may relieve excess pressure to prevent damaging equipment.
Claims22
A method for preventing energizing equipment that supplies fluid from a storage tank to a power cable, comprising:
- (a) providing a fluid back-flow prevention device in a line carrying the fluid between an injection termination and the storage tank of the fluid, the fluid back-flow device permitting the fluid flow in only a first direction;
- and
- (b) providing a pressure relief device in the line, the pressure relief device permitting the fluid flow to the storage tank in a second direction when a predetermined pressure in the line is exceeded.
A system for preventing energizing a fluid reservoir wherein the system supplies fluid from the fluid reservoir to a power cable, the system comprising:
- a line from the fluid reservoir leading to the power cable;
- a back-flow prevention device installed within the fluid reservoir, wherein the back-flow prevention device can prevent the flow of fluid contaminated with conductive materials that may energize the fluid reservoir;
- and
- a pressure relief device for permitting the fluid flow to the fluid reservoir when a predetermined pressure in the line is exceeded.
An injection termination for the introduction of remediation fluid from a storage tank into a cable, comprising a back-flow prevention device and a pressure relief device are installed within the injection termination a fluid chamber located in a housing of the injection termination, the back-flow prevention device for preventing back-flow of remediation fluid during the delivery of remediation fluid, and the pressure relief device for permitting the remediation fluid flow to the storage tank when a pressure limit in the fluid chamber of the injection termination or—cable is exceeded.
An injection termination for introduction of fluid from a storage tank into a cable, the injection termination comprising:
- a back-flow prevention device installed between a first port and a fluid chamber located in a housing of the injection termination, the back-flow prevention device for permitting the fluid flow to the fluid chamber only in a first direction during delivery of the fluid;
- and
- a pressure relief device installed between a second port and the fluid chamber for permitting the fluid flow to the storage tank in a second direction when a pressure limit in the fluid chamber is exceeded.
Dependencies are inferred from the claim text.