Patent application number | Description | Published |
20100065287 | FIRE PROTECTION SYSTEMS HAVING REDUCED CORROSION - A fire protection system comprising at least one sprinkler, a source of pressurized water, a piping network connecting at least one sprinkler to the source of pressurized water, and a nitrogen generator coupled to the sprinkler system. The nitrogen generator may be a nitrogen membrane system or a nitrogen pressure swing adsorption system. The present systems and methods reduce or nearly eliminate corrosion that typically affects conventional fire protection systems, such as caused by oxygen and microbial systems, which can deteriorate or compromise function. Initial, repeated, or continuous displacement of oxygen with nitrogen in the fire protection system significantly reduces or eliminates corrosion. | 03-18-2010 |
20110094758 | CONTROLLED DISCHARGE GAS VENT - A fire protection system includes a dry pipe system and a controlled discharge gas vent. The dry pipe system and controlled discharge gas vent operate using a breathing cycle to displace oxygen and/or water vapor from within the piping network of the dry pipe system. The controlled gas discharge vent allows displacement of pressurized air with nitrogen, for example, using manual or automated processes that can employ one or more sensors. Corrosion resulting from oxygen, water, and/or microbial growth is reduced or nearly eliminated. | 04-28-2011 |
20110226495 | HIGH NITROGEN AND OTHER INERT GAS ANTI-CORROSION PROTECTION IN WET PIPE FIRE PROTECTION SYSTEM - A wet pipe fire protection sprinkler system and method of operating a wet pipe fire sprinkler system includes providing a sprinkler system having a pipe network, a source of water for the pipe network, at least one sprinkler head connected with the pipe network and a drain valve for draining the pipe network. An inert gas source, such as a nitrogen gas source, is connected with the pipe network. Inert gas is supplied from the inert gas source to the pipe network. Water is supplied to the pipe network thereby substantially filling the pipe network with water and compressing the inert gas in the pipe network. | 09-22-2011 |
20120031629 | FIRE PROTECTION SPRINKLER SYSTEM WITH OXYGEN CORROSION SENSITIVE COUPON ASSEMBLY AND METHOD OF MONITORING CORROSION IN A FIRE PROTECTION SPRINKLER SYSTEM - A fire protection sprinkler system and method of monitoring corrosion in a fire protection sprinkler system that includes a pipe network and at least one sprinkler connected with said pipe network. A corrosion monitor assembly is provided in the pipe network that includes at least one metal coupon and an oxygen depletion area defined on a surface portion of the coupon. A mounting member positions the corrosion monitor assembly to be at least partially covered with water when the sprinkler system is in an operative state. | 02-09-2012 |
20130098640 | HIGH NITROGEN AND OTHER INERT GAS ANTI-CORROSION PROTECTION IN WET PIPE FIRE PROTECTION SYSTEM - A wet pipe fire protection sprinkler system and method of operating a wet pipe fire sprinkler system includes providing a sprinkler system having a pipe network, a source of water for the pipe network, at least one sprinkler head connected with the pipe network and a drain valve for draining the pipe network. An inert gas source, such as a nitrogen gas source, is connected with the pipe network. Inert gas is supplied from the inert gas source to the pipe network. Water is supplied to the pipe network thereby substantially filling the pipe network with water and compressing the inert gas in the pipe network. | 04-25-2013 |
20130168109 | PACKAGED INERTING SYSTEM FOR FIRE PROTECTION SPRINKLER SYSTEM AND METHOD OF INERTING A FIRE PROTECTION SPRINKLER SYSTEM - A fire protection sprinkler system inerting apparatus and method includes selectively connecting an inert gas source and a gas vent to the fire protection sprinkler system with a valve system and controlling the valve system. The valve system is controlled to selectively connect the inert gas source with the sprinkler system to add inert gas to the sprinkler system to increase the proportion of inert gas in the gas mixture within the sprinkler system and to operate the gas vent to discharge a portion of the gas mixture from the sprinkler system. | 07-04-2013 |
20130341055 | ELECTRICALLY OPERATED GAS VENT FOR FIRE PROTECTION SPRINKLER SYSTEMS - An automatic electrical gas vent, method and resulting fire protection sprinkler system, is useful with a water source and at least one sprinkler. The at least one sprinkler is connected with the water source by a piping network. An automatic electrical gas vent is adapted to be connected with the piping network to discharge gas from said piping network. The automatic electrical gas vent includes an electrically operated valve that is electrically actuatable to discharge from said piping network and a sensor. The sensor senses the presence of gas at a portion of the piping network and causes actuation of the valve to discharge from the piping network in the absence of a conductive liquid. | 12-26-2013 |
20140202714 | CONTROLLED DISCHARGE GAS VENT - A fire protection system includes a dry pipe system and a controlled discharge gas vent. The dry pipe system and controlled discharge gas vent operate using a breathing cycle to displace oxygen and/or water vapor from within the piping network of the dry pipe system. The controlled gas discharge vent allows displacement of pressurized air with nitrogen, for example, using manual or automated processes that can employ one or more sensors. Corrosion resulting from oxygen, water, and/or microbial growth is reduced or nearly eliminated. | 07-24-2014 |
20140332240 | Corrosion Monitoring In A Fire Sprinkler System - A fire sprinkler system according to one aspect of the present disclosure includes a pipe having a first pipe portion and a second pipe portion. The first pipe portion includes a wall having a first wall thickness, and the second pipe portion includes a wall having a second wall thickness that is greater than the first wall thickness. The fire sprinkler system further includes structure coupled to the pipe and defining a sealed chamber between the structure and at least the first pipe portion, and a sensor for sensing a pressure in the sealed chamber. Example corrosion monitoring devices and methods for monitoring corrosion in pipe systems, including fire sprinkler systems, are also disclosed. | 11-13-2014 |
20150014000 | HIGH NITROGEN AND OTHER INERT GAS ANTI-CORROSION PROTECTION IN WET PIPE FIRE PROTECTION SYSTEM - A wet pipe fire protection sprinkler system and method of operating a wet pipe fire sprinkler system includes providing a sprinkler system having a pipe network, a source of water for the pipe network, at least one sprinkler head connected with the pipe network and a drain valve for draining the pipe network. An inert gas source, such as a nitrogen gas source, is connected with the pipe network. Inert gas is supplied from the inert gas source to the pipe network. Water is supplied to the pipe network thereby substantially filling the pipe network with water and compressing the inert gas in the pipe network. | 01-15-2015 |
20150021052 | HIGH NITROGEN AND OTHER INERT GAS ANTI-CORROSION PROTECTION IN WET PIPE FIRE PROTECTION SYSTEM - A wet pipe fire protection sprinkler system and method of operating a wet pipe fire sprinkler system includes providing a sprinkler system having a pipe network, a source of water for the pipe network, at least one sprinkler head connected with the pipe network and a drain valve for draining the pipe network. An inert gas source, such as a nitrogen gas source, is connected with the pipe network. Inert gas is supplied from the inert gas source to the pipe network. Water is supplied to the pipe network thereby substantially filling the pipe network with water and compressing the inert gas in the pipe network. | 01-22-2015 |
20150028122 | SUPERVISED NITROGEN CYLINDER INERTING SYSTEM FOR FIRE PROTECTION SPRINKLER SYSTEM AND METHOD OF INERTING A FIRE PROTECTION SPRINKLER SYSTEM - An inerting system for a fire protection sprinkler system and method of inerting a fire protection sprinkler system to reduce the concentration of oxygen includes connecting an inert gas supply system with the piping network of the fire protection sprinkler system. The gas supply system includes a plurality of tank adapters, an automatic fill valve, an automatic vent valve and at least one pressure transducer. Each of the tank adapters is adapted to connect with a tank of inert gas and to selectively connect the tank of inert gas with said automatic fill valve. A control controls the gas supply system including operating the automatic fill valve and the automatic vent valve in order to increase the proportion of inert gas in the piping network. The control monitors the at least one pressure transducer to determine the pressure of gas at least in the tank connected with the automatic fill valve. The control operates the tank adapters to disconnect a tank connected with the automatic fill valve when the pressure in that tank is below a particular pressure and connects a different tank with the automatic fill valve. The control system may include a form of visual indication to identify full and depleted tanks. This information can be transmitted to any remote monitoring location if required. | 01-29-2015 |
20150034170 | INERTING GAS VENT ASSEMBLY, INERTING SYSTEM USING THE GAS VENT ASSEMBLY AND METHOD OF INERTING A FIRE PROTECTION SPRINKLER SYSTEM - A fire protection sprinkler system and method of inerting a fire protection sprinkler system includes connecting an inerting system to the piping network of a fire protection sprinkler system having a piping network and at least one sprinkler head connected with the piping network. The inerting system includes an inert gas source that is adapted to supply inert gas to the piping network and an inerting gas vent assembly. The gas vent assembly has a gas vent adapted to discharge gas, a solenoid and a control. The solenoid is adapted to selectively open the gas vent and to close the gas vent. The gas vent discharges gas when the solenoid opens the gas vent and does not discharge gas when the solenoid closes the gas vent. The control is adapted to operate the solenoid in a manner that allows the gas vent to discharge gas for a limited amount of time. | 02-05-2015 |
20150083441 | Electrically Operated Gas Vents For Fire Protection Sprinkler Systems And Related Methods - A fire protection sprinkler system includes a water source, a sprinkler, a piping network interconnecting the water source and the sprinkler, and an automatic gas vent coupled to the piping network and configured to discharge gas from the system. The automatic gas vent includes a sensor configured to sense a presence or absence of a liquid and an electrically operated valve. The automatic gas vent is configured to open the electrically operated valve in response to the sensor sensing the absence of a liquid and close the electrically operated valve in response to the sensor sensing the presence of a liquid. Automatic gas vent assemblies and methods of venting and discharging gas from fire protection sprinkler systems are also disclosed. | 03-26-2015 |