摘要:
An aircraft component (200) is disclosed which comprises a first segment (110) comprising a first exterior surface, a first end, and a first electric heater element (227) having a first edge proximate to the first end; a second segment (112) comprising a second exterior surface, a second end, and a second electric heater element (223) having a second edge proximate to the second end, wherein the second end is joined to the first end such that the first external surface and the second external surface combine to form at least a portion of a substantially continuous leading edge surface; a first bus bar connected to the first edge of the first heater element; and a second bus bar connected to the second edge of the second heater element; wherein the first and second bus bars (230) are disposed between the first end and the second end when the first end is joined to the second end.
摘要:
A method of locating a drilling apparatus comprising a drill string and a drill bit and/or a borehole in a subterranean region, comprising the steps of: (A) transmitting seismic waves into the subterranean region during a subterranean drilling operation, the seismic waves being transmitted from a location remote from said drill string; (B) detecting a seismic response from said drilling apparatus or borehole; and (C) comparing said detected response with predetermined seismic survey data of said subterranean region to determine the location of said apparatus or borehole.
摘要:
The present invention provides a refrigerating system, including: a refrigerating loop, including a compressor, a condenser, a throttling element, and an evaporator that are connected in sequence through a pipeline; and a purification loop, connected to the refrigerating loop and configured to separate a pressure maintaining gas in the refrigerating loop; wherein the refrigerating loop is connected into the purification loop from the top of the condenser or the top of the compressor. The present invention further provides a purification method for a refrigerating system, including: in a first time period, performing S1: charging, into the refrigerating system, a refrigerant that satisfies a designed refrigerating capacity; and S2: charging a pressure maintaining gas into the refrigerating system, so that pressure in the refrigerating system is higher than atmospheric pressure; and in a second time period, performing S3: separating and discharging the pressure maintaining gas in the refrigerating system.
摘要:
A transport refrigeration unit includes a combustion engine system having a turbo-charger constructed and arranged to receive air in a cold state and expel the air in a compressed hot state, an evaporator, and a defrost heat exchanger constructed and arranged to receive the air in the compressed hot state and expel the air in a compressed cooled state for defrosting the evaporator. In operation, the unit may be capable of controlling a defrost temperature and/or controlling the temperature of the air entering a combustion engine of the engine system for combustion by controlling the volume of air flow between the defrost heat exchanger and a charge air cooler of the engine system.
摘要:
A starter system for start up of a combined heat and power unit comprising a generator which is connectable to the grid. The starter system comprises a variable frequency drive, VFD, operable to receive power from the grid. The VFD reduces the frequency of the power, and provides the reduced-frequency power to the generator to start the generator. The starter system further comprises a bypass relay configured to bypass the VFD. The bypass relay allows direct connection between the grid and the generator after the generator has started. The variable frequency drive is configured to operate temporarily during start up of the combined heat and power unit.
摘要:
A method includes applying a first powder to an aluminum article and heating the first powder to form a first layer on the aluminum article providing mechanical strength, corrosion durability and bonding potential. The method also includes applying a second powder to the aluminum article and heating the second powder to form a second layer on the aluminum article protecting the aluminum article from ultraviolet radiation. A coated article includes an aluminum substrate, an epoxy layer and a topcoat layer. The epoxy layer promotes adhesion, enhances corrosion durability and provides mechanical strength, and is formed by applying a first powder containing an epoxy to the aluminum substrate and curing the first powder. The topcoat layer provides resistance to ultraviolet radiation and environmental contaminants, and is formed by applying a second powder to the aluminum substrate and curing the second powder.
摘要:
The present disclosure provides a power supply apparatus for an aerospace actuator 14, comprising motor drive electronics 12 for actuation of a motor 13 for control of the aerospace actuator 14, and an energy storage device 17. The motor drive electronics 12 are configured to receive input electrical energy from an aircraft power grid 6, receive electrical energy from the energy storage device 17 and provide electrical energy from the grid 6 and/or from the energy storage device 17 to the motor 13. The energy storage device 17 is configured to store at least one of: excess electrical energy supplied to the motor drive electronics 12 from the grid 6 and regenerated electrical energy from the motor drive electronics 12. The energy storage device 17 is configured to discharge the stored energy as electrical energy to the motor drive electronics 12 when required. An aircraft may be provided with at least one of the above-described power apparatuses.
摘要:
A palm unit for an artificial hand comprises: a palm unit body (70); a motor (68) held by the palm unit body (70); a hydraulic pump assembly (72) held by the palm unit body (70) and comprising a low-pressure hydraulic pump (76) and a high-pressure hydraulic pump (74), wherein both hydraulic pumps (74, 76) are powered simultaneously by the motor (68); and a hydraulic circuit held by the palm unit body (70) and coupled to both hydraulic pumps (74, 76), wherein the hydraulic circuit has a low-pressure configuration in which the discharge sides of both hydraulic pumps (74, 76) a re coupled to one or more hydraulic actuator(s) (36, 38) for the artificial hand and a high-pressure configuration in which the discharge side of the low-pressure pump (76) is isolated from the hydraulic actuator(s) (36, 38) and recirculates fluid to the suction side of the low pressure pump (76) with the discharge side of the high-pressure pump (74) remaining coupled to the hydraulic actuator(s) (36, 38), and wherein the hydraulic circuit is arranged to switch from the low-pressure configuration to the high-pressure configuration automatically during a closing grip pattern when the pressure in the system increases beyond a threshold value.
摘要:
A terminal support stand, according to one embodiment, may comprise: a fixed plate capable of being attached to a terminal; a support plate selectively coupled with the fixed plate, wherein at least a part of the support plate makes contact with the ground when the support plate is spaced apart from the fixed plate; and a magnetic body that connects the fixed plate and the support plate and is attached to a compressible resilient body and the fixed plate or support plate, wherein the magnetic body selectively couples the fixed plate and the support plate. Further, a terminal support stand, according to another embodiment, may include: a fixed plate capable of being attached to a terminal; a first coupling part that is formed on one side of the fixed plate and includes an empty space and a first protrusion that has a saw tooth shape and is formed in the empty space; a support plate selectively coupled with the fixed plate, wherein at least a part of the support plate makes contact with the ground when the support plate is spaced apart from the fixed plate; a second coupling part that is formed on one side of the support plate and includes a second protrusion that has a saw tooth shape and is selectively engaged with the first protrusion; and a resilient body that connects the fixed plate and the support plate and is compressible.
摘要:
An air conditioning system having a cooling mode and a free-cooling mode is provided. The system includes a refrigeration circuit, two pressure sensors, a controller, and a pump-protection sequence resident on the controller. The refrigeration circuit includes a compressor and a pump. The first pressure sensor is at an inlet of the pump, while the second pressure sensor is at an outlet of the pump. The controller selectively operates in the cooling mode by circulating and compressing a refrigerant through the refrigeration circuit via the compressor or operates in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump: The pump-protection sequence turns the pump to an off state based at least upon a differential pressure determined by the controller from pressures detected by the first and second pressure sensors.