1536 results about "Oil cooling" patented technology

A thermal management system having a battery and an electric motor, the temperature of both of which is to be controlled, wherein the electric motor is oil-cooled. The thermal management system has a monitoring system for monitoring an oil flow generated by an oil pump, in an oil cooling circuit including the electric motor. The monitoring system in this case has a first pressure sensor at a first point of the oil cooling circuit and a second pressure sensor at a second point of the oil cooling circuit and / or a speed sensor assigned to the oil pump. Also proposed is a vehicle having a thermal management system of this type.

The joint module comprises a motor and a harmonic reducer, the motor comprises a shell, a stator assembly and a rotor assembly, the shell comprises an outer shell and an inner oil cavity, a first oil port and a second oil port are formed in the two ends of the inner oil cavity respectively, the stator assembly is fixed to the inner side of the inner oil cavity, and the rotor assembly is fixed to the outer side of the inner oil cavity. The rotor assembly comprises a rotating shaft and a rotor hub arranged on the rotating shaft, the rotor hub comprises an inner shell and an outer shell, the inner shell and the outer shell are fixed through a connecting piece, an oil stirring channel is formed, the harmonic reducer comprises a wave generator, a flexible gear, a supporting bearing outer ring and a supporting bearing inner ring, and the rotating shaft is connected with the wave generator. The wave generator drives the flexible gear to deform, the flexible gear is fixed to the rear end cover, the outer ring of the supporting bearing is fixed to the rear end cover, and a gear ring is arranged on the inner wall of the inner ring of the supporting bearing and is in staggered tooth transmission with the flexible gear. Oil liquid is in direct contact with a stator heating source, the stator heat dissipation efficiency is improved, the rotor hub drives the oil liquid to flow, and the heat exchange efficiency is improved.

A spray oil cooling device for a stator core periphery of an electric drive unit in a motor vehicle comprising an oil pump for providing a cooling oil mass flow and an oil line for guiding the cooling oil mass flow starting from the oil pump to at least one first oil spray area at stator winding heads of a first stator end face, and at least one second oil spray area at stator winding heads of a second stator end face, wherein the oil line is designed to guide the cooling oil mass flow between the first and the second oil spray area, remote from a stator core cooling sleeve.

The invention relates to the technical field of bearings, in particular to a rotary table bearing internally provided with an oil cooling structure, which comprises a rotary table bearing and is characterized in that the rotary table bearing comprises an outer ring, and an inner ring is rotatably arranged in the outer ring; a rolling body used for supporting the outer ring and the inner ring and allowing the inner ring to rotate relative to the outer ring is arranged between the outer ring and the inner ring, a retainer used for keeping the position of the rolling body is movably connected to the rolling body, and an oil cooling channel used for the rotary table bearing is formed in the outer ring or the inner ring. An inlet and an outlet for cooling oil to enter the oil cooling channel are formed in the two ends of the oil cooling channel, a cooling pipeline is communicated with the position, located outside the rotary table bearing, between the inlet and the outlet of the oil cooling channel, an oil pump is communicated with the cooling pipeline, and a cooling assembly is arranged on the cooling pipeline. It is ensured that the bearing can still be effectively cooled under long-time and high-load operation, the service life of the rotary table bearing can be prolonged, and the maintenance cost and the replacement frequency are reduced.

The invention relates to an aircraft electric drive oil cooling structure which comprises an outer rotor assembly, a stator assembly, a controller assembly, an oil pump and a heat dissipation assembly, the stator assembly comprises a stator shell and a winding, a sealing cover is further fixed to the outer side of the winding, and a cooling cavity is formed between the sealing cover and the stator shell; a bottom plate is further arranged at the bottom of the stator shell, the controller assembly is fixed in a mounting cavity formed by the bottom plate and the stator shell and comprises a circuit board and a cooling plate which are close to each other, the circuit board is connected with the winding, an oil duct A is further arranged on the bottom plate, an oil inlet pipe and an oil outlet pipe are arranged on the cooling plate, and an oil duct B communicated with a cooling cavity is further arranged on the bottom plate; the heat dissipation assembly comprises a heat dissipation fin set and a fan assembly, the heat dissipation fin set and the oil pump are both fixed to the lower portion of the bottom plate, heat dissipation fins form a ring and are arranged outside the oil pump in a surrounding mode, the heat dissipation fin set, the oil pump and the bottom plate are communicated with one another, and the fan assembly is fixed to the lower portion of the heat dissipation fin set. Efficient, light-weight, high-integration-level and reliable heat dissipation of the electric drive of the aircraft is achieved.

The invention provides a power transformer electromagnetic loss control method and device in an intelligent power grid environment, and relates to the field of intelligent power grids, and the method comprises the steps: carrying out the cooling demand prediction of a transformer according to a predicted power load sequence and a space temperature sequence, and outputting a predicted cooling load sequence; and with meeting of the predicted cooling load sequence as a constraint and minimization of energy consumption and oil temperature fluctuation as optimization targets, cooling parameters of the forced oil cooling device are optimized, an optimal cooling parameter sequence is output, and the forced oil cooling device is controlled to dissipate heat of the transformer. The method aims to solve the technical problems that a traditional control method lacks cooling strategy dynamic adjustment capacity, temperature rise abnormity is prone to occurring in a high-load or high-temperature environment, transformer iron core loss and winding loss are remarkably increased, and electromagnetic loss is high, accurate and efficient cooling control can be achieved, the electromagnetic loss is effectively reduced, and the service life of a transformer is prolonged. And the operation efficiency and stability of the transformer are improved.

The prevent invention relates to the technical field of new energy automobile power devices, and specifically relates to an integrated oil-cooled e-axle, comprising: an integrated housing, and a motor, a controller, and a speed reducer that are installed on the integrated housing. The motor is in transmission fit with the speed reducer. The motor is electrically connected to the controller. The integrated housing is provided with an oil cooling flow channel. The oil cooling flow channel comprises a first main flow channel and a second main flow channel. The motor and the speed reducer are provided with corresponding oil paths that are connected to the first main flow channel and the second main flow channel respectively, so that cooling oil cools a rotor and a stator of the motor along the oil paths, and lubricates bearings on the speed reducer. Oil cooling advantages are fully utilized in the present invention. On the basis of an oil cooling design of a conventional stator and rotor, the cooling design is optimized, so that the motor, the speed reducer, and a differential are cooled, all bearings on the motor, the speed reducer, and the differential are lubricated, thereby improving the output performance of the e-axle, prolonging the service life of the e-axle, and achieving higher reliability and practicability.

The invention belongs to the technical field of oil-immersed transformers, and particularly relates to an oil-immersed transformer with a heat dissipation structure, which comprises a transformer shell, an oil cooling mechanism is arranged on the outer wall of the transformer shell, a mounting seat is fixedly connected to the inner wall of the transformer shell, and a heat absorption sheet is fixedly connected to the bottom of the mounting seat. And a heat dissipation opening is formed in the bottom of the transformer shell, a filter screen is fixedly connected into the heat dissipation opening, and a heat removal cleaning device and an auxiliary cleaning device are arranged below the mounting base. According to the oil-immersed transformer with the heat dissipation structure, by using the heat removal cleaning device, when the temperature in the transformer shell is high and the temperature detected by a temperature sensor reaches the specified temperature of a controller, a double-shaft motor is started, an output shaft of the double-shaft motor rotates to drive a rotating shaft to rotate, and then a heat removal fan is driven to rotate; and heat of the heat absorption sheets is discharged outwards through the heat dissipation openings, so that the heat dissipation effect of the oil-immersed transformer is improved.

The invention relates to the technical field of motorized spindles, in particular to an intelligent monitoring, regulating and controlling system and a control method of a motorized spindle. A first front-end displacement sensor and a second front-end displacement sensor are used for detecting the displacement amount of a front-end bearing in the X direction and the Y direction respectively, and a first rear-end displacement sensor is used for detecting the displacement amount of a rear-end bearing in the Z direction; when the displacement of the front-end bearing in the X direction and the Y direction or the displacement of the rear-end bearing in the Z direction exceeds a set threshold value, the signal acquisition control system controls the piezoelectric ceramic sensor to act so as to adjust the pre-tightening force of the motorized spindle, and when the temperature detected by the temperature sensor exceeds the set threshold value, the water cooling system is started for cooling, and when the temperature still exceeds the set threshold value, the motor is started. According to the electric spindle cooling system, accurate control over the cooling effect of the electric spindle is achieved through combination of water cooling and oil cooling.

The invention relates to the technical field of oil cooling motors, in particular to an oil cooling motor oil way device capable of improving the cooling effect, which comprises a motor shell, a cylindrical oil conveying cavity layer is arranged in the motor shell, an oil feeding pipe and an oil discharging pipe are fixed on one side of the outer part of the motor shell, and the oil feeding pipe and the oil discharging pipe are both communicated with the oil conveying cavity layer; a blocking transverse column and a row of C-shaped partition columns are arranged in the oil conveying cavity layer, the blocking transverse column is arranged between the oil feeding pipe and the oil discharging pipe, the row of C-shaped partition columns are perpendicular to the blocking transverse column, the interior of the oil conveying cavity layer is divided into a plurality of C-shaped plate cavity unit oil ways through the row of C-shaped partition columns, and a plurality of stirring devices used for stirring oil are annularly arranged in each unit oil way. A conveyed cooling oil path is divided into a plurality of C-shaped unit oil paths through the row of C-shaped partition columns, each oil path is horizontally pushed and moved perpendicular to the oil path through the corresponding arc-shaped half panel, replacement of an oil layer close to the middle of the motor shell and replacement of the oil layer away from the middle of the motor shell can be caused by pushing and stirring of the arc-shaped half panels, and therefore the purpose that conveyed cold oil is evenly heated is achieved.

A helicopter with an improved cooling system, wherein the helicopter comprises a main rotor (3) coupled to an internal combustion engine (4) by means of transmission means (5) and wherein the cooling system (1) comprises a coolant circuit (15) of the engine (4) and a lubricating oil circuit. The cooling system (1) comprises first liquid cooling means (15), second oil cooling means (16), a radiator (22) and a fan (17) housed in an air conveyor (20) arranged in an inner compartment of the helicopter. The fan (17) is located at the inlet of the air conveyor (20) and is not visible from the outside. The cooling system (1) comprises a single radiator (22) located downstream of the fan (17). The first cooling means (15) comprise the single radiator (22), the second oil cooling means (16) comprise a heat exchanger (40) separate from the single radiator (22) and located below the same, the heat exchanger (40) being configured to use as an exchange fluid the coolant exiting the single radiator (22) and having a coolant liquid outlet fluidically connected to the engine (4).

The invention relates to the technical field of transformer heat dissipation, in particular to an oil cooling radiator for a transformer, which comprises a shell, an oil conservator, a telescopic driving piece, cooling fins and the like, electrical elements are arranged in the shell; an oil conservator used for stabilizing the oil pressure in the shell is arranged on the shell; the oil conservator is communicated with the interior of the shell; a plurality of telescopic driving pieces are arranged on the shell; the telescopic ends of every two telescopic driving pieces which are opposite in the front-back direction are jointly and fixedly connected with a plurality of cooling fins used for conducting heat dissipation on insulating oil. The cooling fins are made of heat conduction materials. And each radiating fin is of a hollow structure. The oil leakage part of the welding seam of the cooling fin is blocked through the rubber scraping strip and the blocking plate, insulating oil is prevented from continuously leaking, the insulation performance of electrical components in the transformer is prevented from being reduced, faults such as short circuit and discharge caused by insufficient insulation strength are reduced, and meanwhile it is avoided that follow-up maintenance work is affected by insulating oil leakage.

The invention discloses a servo motor casing structure convenient for heat dissipation, which belongs to the technical field of motors and comprises a casing, end covers are detachably mounted at two ends of the casing respectively, a plurality of heat dissipation fins are distributed on the side wall of the casing, and two independent cooling channels are arranged in the inner wall of the casing; the oil cooling channel is composed of a plurality of wide channels which are circumferentially distributed at equal intervals, and the water cooling channel is composed of a plurality of gap channels which are circumferentially distributed at equal intervals; the two ends of the machine shell axially and symmetrically extend to form inner protruding edges, and the oil cooling channels are distributed in the inner protruding edges in a penetrating mode. An oil inlet ring and an oil discharge ring are symmetrically arranged on the machine shell, are both distributed between the machine shell and the end cover, and are respectively communicated with two sides of the oil cooling channel; amplitude modulation units are slidably arranged at the positions, located on the peripheries of the inner protruding edges, of the machine shell, and the two amplitude modulation units can be matched to adjust the effective circulation length of each gap channel in the water cooling channel; the oil cooling channels and the water cooling channels are arranged correspondingly, so that the heat dissipation effect of the case is improved.

An oil-cooled motor includes a casing, a rotor, and a stator. The casing is internally provided with an accommodating cavity. The rotor and the stator are accommodated in the accommodating cavity. The stator includes a stator core coaxially surrounding an outer side of the rotor. The stator core includes a first oil cooling channel, a second oil cooling channel, and a first end and a second end in an axial direction of the rotor. The first oil cooling channel penetrates the stator core from the first end to the second end, forming a first oil inlet in the first end and forming a first oil outlet in the second end. The second oil cooling channel penetrates the stator core from the first end to the second end, forming a second oil inlet in the second end and forming a second oil outlet in the first end.

The invention relates to the technical field of motor cooling, in particular to an oil-water composite cooling motor heat dissipation structure and a heat dissipation method thereof.The oil-water composite cooling motor heat dissipation structure comprises a machine shell, a stator iron core, a winding and a rotor are arranged in the machine shell, and a hollow shaft is inserted into the rotor in a penetrating mode. Water flows through the S-shaped water channel on the casing, the casing and the stator core are cooled when the water passes, most heat is taken away, and basic temperature control is maintained; cooling oil is guided into the first oil cooling channel, the second oil cooling channel and the third oil cooling channel through the oil inlets, it is guaranteed that all positions of the stator can make synchronous contact with heat dissipation oil in the first oil cooling channel, particularly, effective heat dissipation is conducted on a stator iron core, the oil enters an oil injection ring, and the cooling effect is improved. According to the utility model, oil is sprayed to a stator winding at 360 degrees circumferentially, heat dissipation is enhanced, the other two oil cooling channels guide oil to a bearing and a rotor respectively, a plurality of heating parts can be considered, a specific oil way is designed to directly cool the heating parts, the lubricating and heat dissipation efficiency is improved, and high-speed operation of the motor is realized.

The present invention discloses a mechanical engineering reducer with an oil cooling assembly and a control method thereof, comprising a cooling box and a reducer fixedly mounted on the top of the cooling box, a motor fixedly mounted on the top of the cooling box near one side of the reducer, a coupling fixedly connected between the motor and the reducer, an oil pump fixedly mounted on the top of the reducer, a liquid inlet of the oil pump fixedly connected to a liquid inlet pipe extending into the interior of the reducer, a liquid outlet fixedly connected to a liquid outlet pipe, a purifier connected to the liquid outlet pipe, an S-shaped heat exchange tube fixedly connected to one end of the liquid outlet pipe, an air cooling fin assembly for cooling the S-shaped heat exchange tube provided inside the cooling box, and fan assemblies provided on both sides of the air cooling fin assembly. The present invention relates to the field of reducer cooling technology, and the mechanical engineering reducer with an oil cooling assembly and a control method thereof solve the problem that the existing heat dissipation device of the reducer has certain limitations and an unsatisfactory heat dissipation effect.

The utility model relates to an oil way system, a cascade unit, energy-saving equipment and refrigeration equipment, the oil way system comprises a first heat exchanger, a first oil tank and a second oil tank, a first channel and a second channel are arranged in the first heat exchanger, and heat exchange can be conducted between the first channel and the second channel; two ends of the first oil tank are respectively communicated with the first channel to form a first circulating oil path; the two ends of the second oil tank communicate with the second channel to form a second circulating oil way. According to the oil way system, when the oil temperature in the first oil tank and the oil temperature in the second oil tank have a large temperature difference, the oil temperature of one oil tank is too low, and the oil temperature of the other oil tank is too high or too high, heat exchange between the two circulating oil ways can be achieved through the first heat exchanger; and therefore, the conditions of too low oil temperature and too high oil temperature are relieved synchronously, and normal operation of an oil way can be guaranteed. No extra heating assembly or oil cooling assembly is needed, and the power consumption and the manufacturing cost of the oil way system can be obviously reduced.

The invention discloses a waterproof ventilation plug and an automobile, and belongs to the technical field of automobiles. The waterproof ventilation plug comprises a valve seat, a valve element assembly, an exhaust spring, a ventilation film framework, a waterproof ventilation film and a ventilation plug cover; the upper portion of the valve seat and the lower portion of the breathable film framework are fixed and connected in a sealed mode to form an internal hollow structure, the valve element assembly and the exhaust spring are located in the internal hollow structure, and the exhaust spring is located at the top end of the valve element assembly. A breathable film installation hole is formed in the upper portion of the breathable film framework and used for installing the waterproof breathable film, the breathable plug cover is installed on the upper portion of the breathable film framework and wraps the structure, and the inner top face of the breathable plug cover is rigidly and fixedly connected with a plurality of top columns on the breathable film framework. The waterproof ventilation plug can achieve two-way ventilation of a transmission box body, can effectively prevent water and dust, has good ventilation performance after being durable, effectively avoids the defects of a normally-open ventilation plug, a one-way valve type ventilation plug and a waterproof ventilation film type ventilation plug in the current market, and is suitable for popularization and application. And the reliability of the oil-cooled hybrid transmission and the oil-cooled electric drive system is ensured.

The invention relates to the technical field of mechanical equipment heat dissipation, in particular to a mechanical equipment heat dissipation device which comprises a lifting motor body and a cooling box body arranged on one side of the lifting motor body and used for cooling lubricating oil in the lifting motor body, and a plurality of cooling hole grooves distributed at intervals are formed in the cooling box body; and the heat dissipation assembly comprises a heat dissipation base installed at the bottom of the cooling box body, a rotary heat dissipation mechanism for controlling gas circulation is arranged in the middle of the heat dissipation base, and a heat dissipation fan for extracting gas for heat dissipation is arranged above the rotary heat dissipation mechanism. The lubricating oil cooling device has the beneficial effects that when the cooling fan rotates, air is blown out from the cooling hole grooves in the cooling box body, and effective cooling of lubricating oil is achieved; the self-adaptive environment adjustment is in an environment with limited air circulation, and the limiting mechanism can automatically adjust the heat dissipation mode according to the change of the internal temperature.

The invention discloses a long-service-life composite heat treatment method for a harmonic reducer flexible gear made of an SNCM439 material, belongs to the technical field of long-service-life manufacturing of harmonic reducers, and solves the problem that the service life of the harmonic reducer flexible gear is short. According to the method, a flexible gear made of an SNCM439 material is subjected to a composite heat treatment method of secondary normalizing, quenching, deep cooling and tempering, and the specific process method is as follows: the primary normalizing temperature is 870-890 DEG C, the heat preservation time is 50-70 minutes, and air cooling is performed; the secondary normalizing temperature is 850-870 DEG C, the heat preservation time is 50-70 min, and air cooling is carried out; the quenching temperature is 830-850 DEG C, the heat preservation time is 50-70 min, and oil cooling is conducted; the subzero treatment temperature is-70 DEG C to-90 DEG C, and the heat preservation time is 110-120 min; the tempering temperature is 490-510 DEG C, and the heat preservation time is 120-140 minutes.

The technical scheme of the utility model discloses an oil return device of a high-temperature water-cooling screw unit. The oil return device comprises an oil separator, a first filter, an oil cooler, a first electromagnetic valve, a second filter, an oil return electromagnetic valve and a compressor, an inlet of the oil separator is connected with an exhaust port of the compressor, a low-pressure oil groove of the compressor is connected with an inlet of the oil cooler through a compressor oil cooling inlet pipe, and a bottom oil outlet of the oil separator is connected with the compressor oil cooling inlet pipe. A second filter and an oil return electromagnetic valve are sequentially installed between a bottom oil outlet of the oil separator and a compressor oil cooling inlet pipe, a high oil level switch and a low oil level switch are arranged on a bottom oil pocket of the oil separator, the high oil level switch and the low oil level switch are arranged on the bottom oil pocket of the oil separator, opening of the oil return electromagnetic valve is controlled, and the oil return process is controlled. And the second filter is matched, so that the oil return quantity is stable, the oil return efficiency is high, and the unit working effect is good.

A large-tonnage high-voltage lithium battery forklift cooling control system, and a control method therefor. The system comprises a drive assembly (1), a pump assembly (12), a hydraulic oil tank assembly (3), an integrated triple-radiator (8), an electronic fan (19), a drive assembly cooling unit, a pump assembly cooling unit, a hydraulic oil cooling unit, a controller and a temperature sensor. For a high-performance large-tonnage high-voltage lithium battery forklift, according to different working temperature requirements of motors, electric control units and hydraulic oil, a heat dissipation system is divided into three circulating cooling systems, i.e. a drive cooling system, a pump cooling system and a hydraulic oil cooling system, which are subject to the integrated triple-radiator (8) for centralized heat dissipation. Thus, two water cooling control systems, i.e. a drive water cooling control system and a pump water cooling control system, and one oil cooling system are built for the large-tonnage high-voltage lithium battery forklift, thereby forming an accurately energy-saving, reliable and stable cooling control system, which allows the motors, the electric control units and the hydraulic oil to all work at a proper temperature, and has the advantages of simple pipe connection, control logic easy to implement, and low energy consumption requirements.

The invention relates to an electronic oil pump control method and system of a vehicle oil cooling electric drive system. The electronic oil pump control method of the vehicle oil cooling and electric driving system comprises the following steps that at least two operation parameters of the vehicle oil cooling and electric driving system are obtained, and the operation parameters comprise a temperature parameter and a parameter related to a load; comprehensively determining the required flow of the electronic oil pump based on the at least two operation parameters; inquiring pre-stored flow and rotating speed MAP data according to the required flow to obtain a corresponding target rotating speed of the electronic oil pump; based on the target rotating speed, the control current of the electronic oil pump is adjusted to control the actual rotating speed of the electronic oil pump, and then the required flow is provided; the electronic oil pump control method of the vehicle oil-cooling electric drive system can solve the problem that the electronic oil pump control strategy of a heavy truck electric drive system is not fine, and is high in efficiency.

A thermal management system for a vehicle and a vehicle having a thermal management system, the thermal management system having a first coolant circuit for a battery and a second coolant circuit for an electric motor for driving the vehicle. The two coolant circuits can be operated in series or in parallel by a multi-way valve. The thermal management system further includes an oil cooling circuit for additionally cooling the electric motor, wherein the oil cooling circuit is thermally connected to the second coolant circuit via a heat exchanger.

The invention relates to an electric machine (1) comprising: a housing (2); a stator (3) having a stator core (5) and a winding (6); and a rotor (4) rotatably supported about an axis of rotation (A), having a rotor shaft (7), a rotor core (8), and a first end ring (9) and a second end ring (12) at an axial end of the rotor core (8), in which the rotor shaft (7) comprises an axial bore (14) and a first and a second radial bore (15, 16) arranged axially offset from one another, wherein a supply element (19) supplies a cooling fluid to the first and second radial bores (15, 16), where the rotor core (8) comprises a plurality of axial passages (27, 27 ') extending between the axial ends of the rotor core, where the first end ring (9) comprises a first channel (28) to connect the first radial bore (15) of the rotor shaft (7) with the first axial passage (27) of the rotor core (8), and where the first end ring (9) comprises a second channel (28) to connect the second radial bore (15) of the rotor shaft (7) with the second axial passage (27') of the rotor core (8). And the second end ring (12) comprises a second channel (29) to connect a second radial bore (16) of the rotor shaft (7) with a second axial passage (27 ') of the rotor core (8).

The invention provides a high-speed oil-cooled flat wire motor stator oil path structure design method, which comprises the following steps of: sequentially establishing a structure model, a loss model and a thermal analysis model of a high-speed flat wire motor based on the thoughts of a thermal network method and a finite element method; determining an optimal design scheme of the motor oil cooling system by gradually simulating and calculating temperature rise conditions of important positions in the motor when different spraying ring structures and iron core oil path layout are selected, and finally constructing a test motor entity according to the optimal design scheme determined by simulation and carrying out a bench test to verify the reasonability of the scheme. Therefore, an accurate and efficient oil cooling system design theory suitable for the flat wire winding permanent magnet driving motor is formed.

The application discloses a motor oil cooling system and a motor oil cooling method. The motor oil cooling system comprises an oil cooling shell assembly, a stator assembly arranged in the oil cooling shell assembly, and a rotor assembly arranged in the stator assembly and rotationally connected with the stator assembly through a bearing. An end cover assembly is arranged at the right end of the oil cooling shell assembly. A shell oil passage is arranged between the oil cooling shell assembly, the stator assembly and the end cover assembly. A rotor oil passage is arranged in the rotor assembly. A shell oil inlet channel and a shell oil return channel are arranged on the oil cooling shell assembly and are communicated with the shell oil passage. A rotor oil inlet channel is arranged on the rotor assembly and is communicated with the rotor oil passage. The rotor oil passage is communicated with the shell oil return channel. The motor can be efficiently and sufficiently cooled by simultaneously cooling the stator core, the stator winding, the rotor core, the bearing and other heating parts, and the motor has better process performance and cost advantage.

The utility model discloses a lubricating oil monitoring and protecting device for a generator set, which relates to the technical field of power generation and comprises a generator set gear shell, a base, a first oil delivery pipe and a second oil delivery pipe. The temperature sensor can monitor the temperature of lubricating oil in the gear shell of the generator set in real time, and when the temperature is too high and reaches a preset threshold value, the temperature switch starts the oil pump so that the lubricating oil can be rapidly cooled through the lubricating oil cooling mechanism. The temperature of the lubricating oil is reduced, so that the situation that mechanical abrasion is aggravated due to the fact that the temperature in a gearbox of the generator set is too high is avoided, automatic detection and protection of the lubricating oil are achieved, and the generator set is made to operate more safely. The cleanliness of the lubricating oil is ensured, so that the lubricating effect of the lubricating oil is better ensured.

This application relates to a performance test system and method for a self-circulating steam compressor. Specifically, the system includes a steam input system, a steam compression system, a buffer and storage system, a steam recovery system, and an intelligent control system, as well as an optional steam compressor makeup water system, a condensate recovery system, and an internal oil cooling system. The self-circulating steam compressor performance test system described herein only requires a small amount of external steam to be input at the initial startup stage. After reaching a stable state, it can achieve full self-circulation operation. This reduces steam consumption, improves the overall economy and energy utilization rate of the system, and has strong operating reliability.

The invention provides a stator assembly, which comprises a plurality of winding assemblies and a shell, and is characterized in that the plurality of winding assemblies are arranged in an annular array, and each winding assembly comprises stator teeth and a winding coil sleeving the stator teeth; the shell comprises two end plates and a side wall arranged between the two end plates, and the stator teeth are installed between the two end plates; the stator assembly further comprises a first cooling part and a second cooling part, the first cooling part comprises a liquid inlet and a liquid outlet which are formed in the shell, a flowing gap is formed between the adjacent winding assemblies or between the winding assemblies and the shell, and the liquid inlet is communicated with the liquid outlet through the flowing gap; a portion of the second cooling member is proximate to the winding assembly and disposed within the flow gap. On the basis of oil cooling, the second cooling component is additionally arranged, and the part with poor cooling effect or special cooling requirement in the oil cooling channel is subjected to supplementary cooling, so that the cooling effect is more excellent than that in the prior art.