Enclosure system for pressure relief device
AssigneeQualitrol Corporation
InventorJoshua J. Herz
Life of this patent
Estimating the term…
Abstract
An enclosure for a pressure relief device, particularly pressure relief devices mounted on electrical equipment housings, is pre-assembled together with the pressure relief device. The enclosure, which provides for temporarily confining and directing fluids discharged from the pressure relief device, is pre-assembled leaving a clearance space so that the pressure relief device can be mounted on the housing with the enclosure system in place. A peripheral shield with an opening for attaching the enclosure to a discharge pipe or other duct work remains rotatable until deliberately secured in place. Components can be shared between the enclosure and the pressure relief device to provide a more efficient and cost effective design.
Claims33
An enclosure system for a pressure relief device that regulates discharges of fluid from an electrical equipment housing comprising:
- a table that supports a valve assembly of the pressure relief device in a position above a flange that attaches the pressure relief device to the electrical equipment housing;
- the table having an extended portion that overhangs the flange;
- a peripheral shield mounted on the extended portion of the table and forming together with the table a sealing engagement for at least temporarily confining fluid discharged through the pressure relief device while preserving a clearance space beneath the overhung portion of the table for accessing the flange and attaching the pressure relief device to the equipment housing;
- a lid in sealing engagement with the peripheral shield for at least temporarily confining the fluid discharged through the pressure relief device;
- and
- the peripheral shield including upper and lower rims, the upper rim being in sealing engagement with the lid and the lower rim being in sealing engagement with the extended portion of the table.
An enclosure system for a pressure relief device that regulates discharges of fluid from an electrical equipment housing comprising:
- a table that supports a valve assembly of the pressure relief device in a position above a flange that attaches the pressure relief device to the electrical equipment housing;
- the table having an extended portion that overhangs the flange;
- a peripheral shield mounted on the extended portion of the table and forming together with the table a sealing engagement for at least temporarily confining fluid discharged through the pressure relief device while preserving a clearance space beneath the overhung portion of the table for accessing the flange and attaching the pressure relief device to the equipment housing;
- a lid in sealing engagement with the peripheral shield for at least temporarily confining the fluid discharged through the pressure relief device;
- and
- a spring compressed between the table and the lid for biasing the valve assembly.
An enclosure system for a pressure relief device that regulates discharges of fluid from an electrical equipment housing comprising:
- a table that supports a valve assembly of the pressure relief device in a position above a flange that attaches the pressure relief device to the electrical equipment housing;
- the table having an extended portion that overhangs the flange;
- a peripheral shield mounted on the extended portion of the table and forming together with the table a sealing engagement for at least temporarily confining fluid discharged through the pressure relief device while preserving a clearance space beneath the overhung portion of the table for accessing the flange and attaching the pressure relief device to the equipment housing;
- an opening formed through the shield for directing discharged fluid from the enclosure system;
- and
- at least one drain formed through the extended portion of the table for draining the temporarily confined fluid from a level below the opening in the peripheral shield.
An enclosure for collecting and directing fluid expelled from an electrical equipment housing through a pressure relief device comprising:
- a table supporting a valve assembly of the pressure relief device;
- a compression lid supported above the table;
- a spring being compressed between the table and the lid for biasing the valve assembly;
- a peripheral shield captured between the table and the lid for enclosing the pressure relief device and having an opening for directing fluid discharged from the pressure relief device;
- and
- the lid being supported by the table independently of the peripheral shield to permit the peripheral shield to be angularly adjusted with respect to the lid and the table.
A pre-assembled enclosure of a pressure relief device for discharging fluid under pressure from a pressure source comprising:
- a valve body of the pressure relief device having an entrance end and a discharge end;
- a mounting at the entrance end of the valve body for attaching the valve body to the pressure source;
- a table located at the discharge end of the valve body;
- a peripheral shield mounted on the table surrounding the discharge end of the valve body for at least temporarily confining fluid discharged through the discharge end of the valve body;
- the peripheral shield being mountable on the table in advance of mounting the valve body to the pressure source so that the valve body can be attached to the pressure source with the peripheral shield in place surrounding the discharge end of the valve body;
- and
- the table including a guide that locates the peripheral shield and that forms a labyrinth seal with the peripheral shield.
A pre-assembled enclosure of a pressure relief device for discharging fluid under pressure from a pressure source comprising:
- a valve body of the pressure relief device having an entrance end and a discharge end;
- a mounting at the entrance end of the valve body for attaching the valve body to the pressure source;
- a table located at the discharge end of the valve body;
- a peripheral shield mounted on the table surrounding the discharge end of the valve body for at least temporarily confining fluid discharged through the discharge end of the valve body;
- the peripheral shield being mountable on the table in advance of mounting the valve body to the pressure source so that the valve body can be attached to the pressure source with the peripheral shield in place surrounding the discharge end of the valve body;
- a lid in sealing engagement with the peripheral shield for temporarily confining fluid discharged through the discharge end of the valve body;
- and
- the lid being supported above the table independently of the peripheral shield.
A pre-assembled enclosure of a pressure relief device for discharging fluid under pressure from a pressure source comprising:
- a valve body of the pressure relief device having an entrance end and a discharge end;
- a mounting at the entrance end of the valve body for attaching the valve body to the pressure source;
- a table located at the discharge end of the valve body;
- a peripheral shield mounted on the table surrounding the discharge end of the valve body for at least temporarily confining fluid discharged through the discharge end of the valve body;
- the peripheral shield being mountable on the table in advance of mounting the valve body to the pressure source so that the valve body can be attached to the pressure source with the peripheral shield in place surrounding the discharge end of the valve body;
- a lid associated with the peripheral shield for temporarily confining fluid discharged through the discharge end of the valve body;
- and
- a spring compressed between the table and the lid for biasing the pressure relief device.
An enclosure system for a pressure relief device assembled together with the pressure relief device, comprising:
- an enclosure being arranged for confining fluids discharged through the pressure relief device;
- a valve body including an extended portion in sealing engagement with a first component of the enclosure;
- and
- the enclosure including a second component that cooperates with the valve body for assembling the pressure relief device in an operating condition;
- and
- the second component of the enclosure cooperating with the valve body for biasing the pressure relief device into a closed position.
An enclosure system for a pressure relief device assembled together with the pressure relief device, comprising:
- an enclosure being arranged for confining fluids discharged through the pressure relief device;
- a valve body including an extended portion in sealing engagement with a first component of the enclosure;
- and
- the enclosure including a second component that cooperates with the valve body for assembling the pressure relief device in an operating condition;
- and
- the valve body having an entrance end and a discharge end for conveying pressurized fluid through the valve body and including a mounting at the entrance end of the valve body for attaching the valve body to a pressure source.
Dependencies are inferred from the claim text.