Abstract: A sensor device, system, and method for monitoring the internal pressure and temperature of a refrigerant tank during a recovery operation to control a purge operation of the tank based on the conditions thereof during the recovery operation. The sensor device, system, and method further utilize an external temperature sensor, the external temperature sensor operable to indicate that it is properly positioned on the surface of the tank.

Abstract: A sensor device, system, and method for monitoring the internal pressure and temperature of a refrigerant tank during a recovery operation to control a purge operation of the tank based on the conditions thereof during the recovery operation. The sensor device, system, and method further utilize an external temperature sensor, the external temperature sensor operable to indicate that it is properly positioned on the surface of the tank.

Abstract: A method and charging apparatus for adding refrigerant to refrigerant system are provided. The disclosure includes thermally conditioning the interior of the service hoses of a refrigerant recovery unit used to charge refrigerant. The conditioning may be based on one or more temperature reading(s) and/or based on a function and may be achieved by a heater along the length of the hose, recirculating refrigerant, and/or through a parallel line of heated liquid.

Abstract: An hydraulic system for an autonomous multi-set pipeline isolation tool comprising an hydraulic piston; a pump for operating the pistons; an accumulator between each of the hydraulic pistons and the pump; and means for operating the pump. The system also comprises a manifold operable to control the flow of fluid in fluid pipelines to control the operation of the pistons which actuate gripping and sealing means of the autonomous multi-set pipeline isolation tool. The hydraulic system further comprises a controller comprising a number of operational modules which are positioned on a single printed circuit board. The advantage of this is that the size of the hydraulic system may be minimized thereby enabling use of the system within a pipeline having an inner diameter of the order of 0.15 m (6?) and upwards. The manifold of the hydraulic system is also provided with a triple fail safe redundancy mechanism.

Abstract: The invention provides an all electrical autonomous pipeline isolation tool for use in offshore and onshore pipeline isolation; the electrical autonomous pipeline isolation tool comprising a first part and a second part, the first and second parts being moveable relative to each other, the electrical autonomous pipeline isolation tool also comprising at least one sealing member which is moveable between an unset condition in which the sealing member is disengaged and the isolation tool is able to travel along inside a pipeline to a predetermined location; and a set condition in which the sealing member is engaged against an internal wall of a pipline such that a seal is formed between the sealing member of the isolation tool and the internal wall of the pipeline; the isolation tool being moveable between the unset condition and the set condition under action of the first part and the second part moving relative to each other.

Abstract: A method and charging apparatus for adding refrigerant to an air conditioning system are provided. The method includes calculating a temperature differential by measuring a first temperature of a refrigerant inside of a refrigerant container and measuring a second temperature either at the air conditioning system or the ambient temperature. The method further includes using the temperature differential to calculate a compensation amount of refrigerant to add to a previously determined recommended amount of refrigerant based on the type of air conditioning system being charged.

Abstract: A self propelled propulsion device suitable for pushing, pulling or articulating other tools or equipment around bends within a pipe. The device comprises a first part and a second part, the first part being coupled to the second part by articulating means. The device also comprises a hydraulic system and a control unit. The hydraulic system is operable to returnably separate the first and second part of the device from each other. The hydraulic system further comprises a plurality of pipeline engaging means positioned along an exterior surface of the device which are operable by the hydraulic system to be engagable with the interior surface of the pipeline. The control unit is in communication with the hydraulic system to control the movement of the pipeline engaging means and the first and second parts such that the device is moveable within the pipeline.

Abstract: The present invention relates to a marine riser isolation tool in particular to an autonomous marine riser isolation tool having a robotic plug installation device that is adapted for positioning a pipeline isolation plug in a vertical pipe such as a marine riser, resulting in sealing of the marine riser.

Abstract: A robotic unit for coupling to an internal buckle arresting pipeline isolation tool that is suitable for use in a pipeline that is being laid from a reeled pipeline vessel. The robotic unit having the ability to position the isolation tool either above or below the SAG bend or touchdown point of the pipeline. The robotic unit has first and second ends which are separable from each other and a hydraulic system having a plurality of pipeline engaging means positioned along an exterior surface of the robotic unit. The hydraulic system of the robotic unit being operable to returnably separate the first and second end of the robotic unit and to engage the pipeline engaging means with the interior surface of the pipeline. The robotic unit further comprising a control unit in communication with the hydraulic system to control the movement such that the robotic unit propels the isolation tool along the inside of a pipeline.

Abstract: A self propelled autonomous pipeline tool for use in straight pipe comprising a first part and a second part, a hydraulic system comprising at least one hydraulic piston and means for operating the piston, and a control unit. The hydraulic system is operable to returnably separate the first and second part of the device from each other. The hydraulic system further comprises a plurality of pipeline engaging means positioned along an exterior surface of the device which are operable by the hydraulic system to be engagable with the interior surface of the pipeline. The control unit is in communication with the hydraulic system to control the movement of the pipeline engaging means and the first and second parts such that the pipeline tool is moveable within a straight pipeline. The pipeline tool further comprises a communications module which enables the pipeline tool to utilize ELF communications.

Abstract: A method and charging apparatus for adding refrigerant to refrigerant system are provided. The disclosure includes thermally conditioning the interior of the service hoses of a refrigerant recovery unit used to charge refrigerant. The conditioning may be based on one or more temperature reading(s) and/or based on a function and may be achieved by a heater along the length of the hose, recirculating refrigerant, and/or through a parallel line of heated liquid.

Abstract: An apparatus and method are provided in order to verify the calibration on the fluid handling system. A magnet coupled to the scale is used to attach a precalibrated weight so that a controller in the system can determine if the scale needs to be calibrated. This way a storage tank does not need to be removed in order to check the calibration of the scale. The system can be locked down if the calibration is not within the predetermined calibration tolerance.

Abstract: A method and apparatus for ensuring a user to change a filter dryer of a refrigerant recovery unit having a refrigerant determining module that is configured to determine a condition of the refrigerant or an amount of refrigerant that has passed through the filter dryer, or a condition of the filter dryer, an alert device that notifies the user to change the filter dryer in response to the condition, a pressure module that regulates the pressure in the filter dryer, and a pressure-sensing device that is configured to detect a change of pressure in response to filter dryer maintenance. The refrigerant recovery unit is disabled from recovering refrigerant when the refrigerant determining module determines that the filter dryer needs to be replaced, and it is activated in response to the change of pressure detected by the pressure-sensing device.

Abstract: A self propelled autonomous pipeline tool for use in straight pipe comprising a first part and a second part, a hydraulic system comprising at least one hydraulic piston and means for operating the piston, and a control unit. The hydraulic system is operable to returnably separate the first and second part of the device from each other. The hydraulic system further comprises a plurality of pipeline engaging means positioned along an exterior surface of the device which are operable by the hydraulic system to be engagable with the interior surface of the pipeline. The control unit is in communication with the hydraulic system to control the movement of the pipeline engaging means and the first and second parts such that the pipeline tool is moveable within a straight pipeline. The pipeline tool further comprises a communications module which enables the pipeline tool to utilize ELF communications.

Abstract: A self propelled propulsion device suitable for pushing, pulling or articulating other tools or equipment around bends within a pipe. The device comprises a first part and a second part, the first part being coupled to the second part by articulating means. The device also comprises a hydraulic system and a control unit. The hydraulic system is operable to returnably separate the first and second part of the device from each other. The hydraulic system further comprises a plurality of pipeline engaging means positioned along an exterior surface of the device which are operable by the hydraulic system to be engagable with the interior surface of the pipeline. The control unit is in communication with the hydraulic system to control the movement of the pipeline engaging means and the first and second parts such that the device is moveable within the pipeline.

Abstract: A robotic unit for coupling to an internal buckle arresting pipeline isolation tool that is suitable for use in a pipeline that is being laid from a reeled pipeline vessel. The robotic unit having the ability to position the isolation tool either above or below the SAG bend or touchdown point of the pipeline. The robotic unit has first and second ends which are separable from each other and a hydraulic system having a plurality of pipeline engaging means positioned along an exterior surface of the robotic unit. The hydraulic system of the robotic unit being operable to returnably separate the first and second end of the robotic unit and to engage the pipeline engaging means with the interior surface of the pipeline. The robotic unit further comprising a control unit in communication with the hydraulic system to control the movement such that the robotic unit propels the isolation tool along the inside of a pipeline.

Abstract: The invention provides an all electrical autonomous pipeline isolation tool for use in offshore and onshore pipeline isolation; the electrical autonomous pipeline isolation tool comprising a first part and a second part, the first and second parts being moveable relative to each other, the electrical autonomous pipeline isolation tool also comprising at least one sealing member which is moveable between an unset condition in which the sealing member is disengaged and the isolation tool is able to travel along inside a pipeline to a predetermined location; and a set condition in which the sealing member is engaged against an internal wall of a pipline such that a seal is formed between the sealing member of the isolation tool and the internal wall of the pipeline; the isolation tool being moveable between the unset condition and the set condition under action of the first part and the second part moving relative to each other.

Abstract: The present invention relates to a marine riser isolation tool in particular to an autonomous marine riser isolation tool having a robotic plug installation device that is adapted for positioning a pipeline isolation plug in a vertical pipe such as a marine riser, resulting in sealing of the marine riser.

Abstract: An hydraulic system for an autonomous multi-set pipeline isolation tool comprising an hydraulic piston; a pump for operating the pistons; an accumulator between each of the hydraulic pistons and the pump; and means for operating the pump. The system also comprises a manifold operable to control the flow of fluid in fluid pipelines to control the operation of the pistons which actuate gripping and sealing means of the autonomous multi-set pipeline isolation tool. The hydraulic system further comprises a controller comprising a number of operational modules which are positioned on a single printed circuit board. The advantage of this is that the size of the hydraulic system may be minimised thereby enabling use of the system within a pipeline having an inner diameter of the order of 0.15 m (6?) and upwards. The manifold of the hydraulic system is also provided with a triple fail safe redundancy mechanism.

Abstract: An apparatus and method providing a refrigeration servicing system that comprises a clean refrigerant source, a recovery circuit and a flushing circuit. The recovery circuit can be configured to recover refrigerant from a cooling system. After recovery cycle is completed, the flushing circuit that is coupled to the recovery circuit can flush clean refrigerant through the recovery circuit. A housing can be provided and configured to house the refrigerant source, the recovery circuit and the flushing circuit.