A circuit assembly for a submersible pump and a submersible pump using the same are disclosed. The circuit assembly comprises: a control and signal generating circuit, which is configured to access a DC signal, and invert the DC signal into an AC signal and then output the AC signal; and a driving circuit, which is connected to the control and signal generating circuit, and is configured to receive the AC signal, and output AC power with corresponding frequency and voltage according to the AC signal to a stator coil of the submersible pump. The submersible pump can directly access DC power supply, which is very convenient for the user; and a water shortage protection circuit can be preferably configured to suspend the control and signal generating circuit when the liquid level is too low, so that a protection when the water level is too low is realized.

This application discloses a water pump with a suspension function, including: a pump casing, a pump cover, a motor, a pressing ring, a volute and a base. In this way, the water pump with the suspension function disclosed in this application has an upper part suspended on a water surface to clarify the position of the water pump, thus preventing the problem of being buried by underwater mud and sucking in underwater impurities, and protecting a sealing structure at the upper part of the pump casing.

An electric driven hydraulic fracking system is disclosed. A pump configuration includes the single VFD, the single shaft electric motor, and the single hydraulic pump mounted on the single pump trailer. A controller associated with the single VFD and is mounted on the single pump trailer. The controller monitors operation parameters associated with an operation of the electric driven hydraulic fracking system as each component of the electric driven hydraulic fracking system operates to determine whether the operation parameters deviate beyond a corresponding operation parameter threshold. Each of the operation parameters provides an indicator as to an operation status of a corresponding component of the electric driven hydraulic fracking system. The controller initiates corrected actions when each operation parameter deviates beyond the corresponding operation threshold. Initiating the corrected actions when each operation parameter deviates beyond the corresponding operation threshold maintains the operation of the electric driven hydraulic fracking system.

Embodiments of the invention provide an electrically-powered submersible pump. The pump has a pump housing, a ring-style terminal block including an annular component having a plurality of terminals, a motor contained within the pump housing, and a power source in communication with at least one of the plurality of terminals. Each of the plurality of terminals is spaced apart about the annular component and at least one terminal of the plurality of terminals extends outwardly from the annular component. The motor in communication with at least one of the plurality of terminals.

A submersible pump assembly (1) includes a submersible pump (2) with a housing (3), and a sensor capsule (4) with a hermetically sealed casing (5). The sensor capsule (4) is releasably mountable at a sensor position (6) located at an outer face (7) of the housing (3) of the submersible pump (2). The submersible pump (2) includes a primary coil (8) within the housing (3). The sensor capsule (4) includes a secondary coil (9) within the casing (5). The primary coil (8) and the secondary coil (9) are arranged to be inductively coupled with each other for wirelessly transferring data and/or power through the housing (3) and the casing (5) when the sensor capsule (4) is mounted at the sensor position (6).

An electric motor communication system for use with a fluid moving system is provided. The electric motor communication system includes an electric motor including a wireless communication device configured to transmit and receive wireless signals, and a processing device coupled to the wireless communication device and configured to control the electric motor based at least in part on wireless signals received at the wireless communication device. The electric motor communication system further includes at least one external device configured to communicate wirelessly with the electric motor.

An electric pump includes an impeller, a rotor connected to the impeller, a housing housing the rotor, a plurality of divided iron cores surrounding an outer surface of the housing, a plurality of divided coil bobbins respectively attached to the plurality of the divided iron cores, a plurality of divided coils respectively wound around the plurality of the divided coil bobbins, and a bus bar unit including a plurality of bus bars.

A circulation pump assembly, with a wet-running electrical drive motor (4), includes a pump casing (6) as well as a motor housing (22) which is connected to the pump casing (6). The motor housing (22) is a combined stator and electronics housing that accommodates a stator (18) of the drive motor (4) as well as motor electronics (34). The motor housing (22), at a first axial end (24) facing the pump casing (6), is closed by an air gap sleeve (16) of the drive motor. The motor housing (22), at a second axial end (26) which is away from the pump casing (6), includes an opening (42) closed by a cover (28). An interior of the motor housing (22), in a region adjacent the first axial end (24), is filled with a potting mass (40) surrounding the stator (18) and the motor electronics (34).

An electronic pump is provided, which includes a rotor assembly. The rotor assembly includes an impeller and a rotor which are separately injection-molded respectively. The material for injection-molding the rotor includes a magnetic material, and the material for injection-molding the impeller does not include a magnetic material. The impeller includes a first fitting portion, the rotor includes a second fitting portion, the impeller and the rotor are cooperated by the first fitting portion and the second fitting portion, and the impeller and the rotor are fixed with respect to each other by a fixing device. In this way, the impeller and the rotor may be made respectively by different materials, and an ordinary plastic material may be employed for the impeller, which may reduce the cost of manufacturing material of the rotor assembly.

Systems and methods for distributed downhole sensing of operating parameters in an ESP utilizing MEMS sensors. In one embodiment, an ESP is installed in a well. The ESP has a pump, a gas separator, a seal section and a motor. Multiple MEMS sensors are positioned within one or more of the ESP components. Each of the MEMS sensors has a sensor component and on-board circuitry that are formed on a substrate. Each MEMS sensor's sensor component senses a corresponding operating parameter and provides sensed information to the on-board circuitry, which processes the received sensor signal as needed and provides the processed information at an output of the MEMS sensor. The outputs of the different MEMS sensors can be networked together, and the sensor information for the different operating parameters can be communicated to equipment at the surface of the well via a common electrical line.