To compensate for an event, equipment may require a power down sequence of a motor connected to a pump to prevent the pumping of servicing fluid at a high pressure, high pressure fluid may be required to be diverted to a reservoir or otherwise diverted from a wellhead, multiple pumping systems may require that pumping pressure be altered or adjusted or that flow rate be altered or adjust to manage or control the conditions to protect equipment or personnel at a site. Activating, adjusting or altering an operational characteristic of equipment by using a control system may automatically initiate the most efficient and effective mitigation steps for equipment at a site when condition is detected or predicted. Collecting and analyzing information from devices, components, sensors, control systems, other equipment or any combination thereof at a site by a master control system provides automated control of pressure sensitive conditions.

A fuel supply device according to the present invention comprises a first fuel pump for forcing fuel from a fuel tank to a fuel passage, a first electric motor for driving the first fuel pump, a second fuel pump for forcing fuel from the fuel tank to the fuel passage, a second electric motor for driving the second fuel pump, a supply flow rate sensor for detecting flow rate in the supply passage, and a control device for controlling the flow rate in the supply passage to follow a desired value thereof, by regulating rotational speeds of the first and second electric motors depending on a difference between the desired value and a detected value of flow rate in the supply passage.

A system and device for remote control operated power washing includes a wireless radio transmitter and a receiver in communication with the transmitter. The transmitter in preferred embodiments has a water flow rate selector which provides for selecting between various water flow rate settings. When the receiver is electronically connected to a motor which is physically connected to a pump supplied with a water source and a hose, and at least the motor has been started, using the transmitter to select between the various water flow rate settings enables the water flow rate output by the hose to change without having to change attachments that might be utilized in conjunction with a power washer.

A shovel includes an undercarriage, an upper slewing structure which is rotatably mounted on the undercarriage, a boom attached to the upper slewing structure, an arm attached to a tip end of the boom, an auxiliary attachment attached to a tip end of the arm, a main pump configured to supply a hydraulic oil to the auxiliary attachment and other hydraulic actuators, and a controller. The controller performs a setting related to a flow rate of the main pump at a time of a combined operation in which the auxiliary attachment and the other hydraulic actuators are operated simultaneously.

A portable air cleaning apparatus includes a housing, an actuating and sensing device and an air cleaning unit. The housing includes an inlet through hole and an outlet through hole. The actuating and sensing module and the air cleaning unit are disposed inside the housing. The actuating and sensing module includes an actuating device and a sensor. The actuating device drives an external air to flow into an interior of the housing via the inlet through hole and discharge the air via the outlet through hole, so as to form an internal air flow. The sensor detects the internal air flow to generate an air-sensing result, such that the actuating and sensing module can accordingly control the air cleaning unit to turn on, turn off, or adjust cleaning intensity. Thus, the portable air cleaning apparatus can monitor and automatically clean the ambient air at the same time.

A pumping system and method including a flow locking feature. A pump controller includes a user interface configured to initially receive and set a plurality of programmed flow rate settings, a maximum locked flow rate, and a minimum locked flow rate. The pump controller is also configured to disable resetting of the maximum flow rate and the minimum flow rate once they are initially received and set and to allow resetting of the plurality of programmed flow rate settings throughout operation of the pumping system. The pump controller is further configured to operate a pump motor in order to maintain a first flow rate set by one of the plurality of programmed flow rate settings as long as the first flow rate is between the minimum locked flow rate and the maximum locked flow rate.

To compensate for an event, equipment may require a power down sequence of a motor connected to a pump to prevent the pumping of servicing fluid at a high pressure, high pressure fluid may be required to be diverted to a reservoir or otherwise diverted from a wellhead, multiple pumping systems may require that pumping pressure be altered or adjusted or that flow rate be altered or adjust to manage or control the conditions to protect equipment or personnel at a site. Activating, adjusting or altering an operational characteristic of equipment by using a control system may automatically initiate the most efficient and effective mitigation steps for equipment at a site when condition is detected or predicted. Collecting and analyzing information from devices, components, sensors, control systems, other equipment or any combination thereof at a site by a master control system provides automated control of pressure sensitive conditions.

Embodiments of the invention provide a pumping system and method including a flow locking feature. A pump controller includes a user interface configured to initially receive and set a plurality of programmed flow rate settings, a maximum locked flow rate, and a minimum locked flow rate. The pump controller is also configured to disable resetting of the maximum flow rate and the minimum flow rate once they are initially received and set and to allow resetting of the plurality of programmed flow rate settings throughout operation of the pumping system. The pump controller is further configured to operate a pump motor in order to maintain a first flow rate set by one of the plurality of programmed flow rate settings as long as the first flow rate is between the minimum locked flow rate and the maximum locked flow rate.

A pumping system and method including a flow locking feature. A pump controller includes a user interface configured to initially receive and set a plurality of programmed flow rate settings, a maximum locked flow rate, and a minimum locked flow rate. The pump controller is also configured to disable resetting of the maximum flow rate and the minimum flow rate once they are initially received and set and to allow resetting of the plurality of programmed flow rate settings throughout operation of the pumping system. The pump controller is further configured to operate a pump motor in order to maintain a first flow rate set by one of the plurality of programmed flow rate settings as long as the first flow rate is between the minimum locked flow rate and the maximum locked flow rate.

A well service pump system supplies high pressure working fluid to a well. The pump system includes a closed-loop hydraulic circuit for actuating a plurality of working pump assemblies. The pump system is powered by a motor, which transfers mechanical energy to a plurality of pumps, which, in turn, provide hydraulic fluid to operate hydraulic ram cylinders, and thereby operate the working pump assemblies. Each of the polished rods of the hydraulic ram cylinders is connected axially to a plunger rod end of the working fluid end cylinder to operate the working pump assembly.