116 results about "Variable capacity" patented technology

The invention discloses an on-load tap-changer oil dissolved gas monitoring device which comprises a variable capacity container, a two-way electromagnetic valve, a switching mechanism, a chromatographic column system, a high-sensitivity detector and a low-sensitivity detector which are sequentially connected, and the top and the bottom of the variable capacity container are connected through a circulating pump to form a gas flow loop. The variable-capacity container is connected with the on-load tap-changer through a connecting pipe, the switching mechanism is connected with at least two quantitative pipes with different capacities, and the switching mechanism is used for equally transferring gas in the variable-capacity container to the quantitative pipes and then sequentially transferring the gas in the quantitative pipes to the chromatographic column system. The invention further discloses a method for monitoring the dissolved gas in the on-load tap-changer oil. According to the monitoring device and the monitoring method for the dissolved gas in the oil of the on-load tap-changer, the detection range of the concentration is improved, a concentration blind area which is not detected and misjudgment of signal saturation can be avoided, and the detection accuracy is improved.

The invention discloses an intelligent regulation and control system for heat supply and power saving of a heat pump. The system comprises a heat pump body control optimization module, a heat pump kernel regulation optimization module, a heat source dynamic switching module and a heat supply intelligent power saving module. The invention belongs to the technical field of heat pump power-saving intelligent regulation and control, a variable-capacity compression control module accurately regulates the load of a compressor through variable-capacity control of a bimodal slide valve, and more efficient energy utilization is achieved; the heat pump working condition optimization module adopts a multi-target dynamic optimization algorithm, comprehensively considers factors such as system efficiency, service life and noise, and realizes precise adjustment of working conditions; the multi-heat-source dynamic switching module intelligently selects an optimal heat source and realizes non-inductive switching through a game decision algorithm in combination with heat source entropy efficiency, an equipment health index and energy consumption cost, so that pressure fluctuation and system instability in a heat source switching process are reduced; the working efficiency of the heat pump system is effectively improved, the energy consumption is reduced, and the maintenance cost and the failure rate are reduced.

The invention discloses stepless variable-pitch tightening equipment special for aviation equipment nuts. The stepless variable-pitch tightening equipment comprises a tightening machine, a horizontal posture adjusting mechanism, a length-adjustable tightening arm mechanism, a rotary posture adjusting and floating buffering mechanism, a screwing motor, a screwing motor support, a nut tightening force transmission sleeve, a wrench stepless variable-pitch executing mechanism, a nut screwing wrench, a force transmission shaft and a three-channel flexible cable traction mechanism. Under the condition that the basic function of nut tightening is not changed, tightening equipment is endowed with stepless pitch-variable capacity, even if nut mounting points in a cavity are not uniformly distributed in the circumferential direction or the radial sizes of different positions are different, the radial position of the nut tightening wrench can be dynamically changed through stepless pitch-variable adjustment, and the nut tightening effect is improved. According to the nut tightening wrench, the nut screwing sleeve on the nut tightening wrench can accurately move to any nut mounting point position, so that nut tightening work at different positions in the cavity can be smoothly completed, the use scene of tightening equipment is further expanded, and the application range of the tightening equipment is greatly widened.

A hydraulic-pump flow-rate calibration system includes: a variable capacitance type hydraulic pump that supplies an operating fluid to a hydraulic actuator; a regulator that changes the dispense flow rate of the hydraulic pump according to a flow rate command signal; a flow rate detection device that detects the flow rate of the operating fluid; a control device that outputs the flow rate command signal to the regulator to control the regulator; and a calibration device that calculates an actual measurement characteristic of the dispense flow rate for the flow rate command signal, and performs, on a preset reference characteristic, calibration based on the actual measurement characteristic. The actual measurement characteristic is calculated as a result of the flow rate of the operating fluid being detected by the flow rate detection device during output of a predetermined flow rate command signal from the control device to the regulator.

The invention discloses an energy-saving control refrigerating system which comprises a compressor, a condenser, an expansion mechanism, an evaporator, a bypass adjusting loop, a variable-capacity liquid storage device and a main controller. The bypass adjusting loop comprises a first branch pipeline and an electric control flow valve, one end of the first branch pipeline is connected to an outlet of the evaporator, and the other end of the first branch pipeline is connected to an air suction port of the compressor; the variable-capacity liquid storage device is connected with an outlet of the evaporator through a second branch pipeline; the main controller is electrically connected with the variable-capacity liquid storage device and the electric control flow valve, and the main controller is configured to obtain the temperature Tout and the pressure Pout of a refrigerant at an outlet of the evaporator and calculate the superheat degree of the outlet of the evaporator under the condition that the refrigerating system operates in a steady-state mode; and based on the superheat degree and a preset target superheat interval, the opening degree of the electric control flow valve and the volume of the variable-volume liquid storage device are adjusted.

The invention discloses a variable-capacity air fryer convenient to operate. Comprising a base, a guide rail assembly vertically arranged on the side of the base, a sliding seat assembly in sliding fit with the guide rail, a heating machine head arranged on a sliding seat, an elastic reset piece connected with the guide rail and the sliding seat, an elastic locking assembly arranged on the sliding seat, an external first handle and at least two pot bodies. The guide rail is provided with a plurality of gear lock holes and a sliding groove, and the first handle is connected with the sliding seat through the sliding groove and can drive the sliding seat to ascend and descend and enable the locking assembly to be inserted into the corresponding lock hole so as to lock the height of the machine head. And the pot body can be placed on the base and covers the machine head. The structure realizes quick adjustment of the machine head, adapts to pot bodies with different capacities, does not need to disassemble the machine head, and is convenient to operate, sanitary, safe, and good in sealing performance and heat cycle effect.

The application relates to the technical field of air conditioners, and discloses a control method for a variable displacement compressor air conditioner, wherein an exhaust port of a variable displacement compressor is connected to a variable displacement chamber of the variable displacement compressor through an exhaust pipeline, and an electric heating device is arranged on the exhaust pipeline; the control method comprises the following steps: in the case that the variable displacement compressor air conditioner executes a heating mode, obtaining an exhaust temperature of the variable displacement compressor, an exhaust pressure and a saturated steam temperature corresponding to the exhaust pressure; and in the case that the difference between the exhaust temperature and the saturated steam temperature is less than a first temperature, controlling the electric heating device to start. The method can avoid liquid accumulation in the variable displacement chamber and eliminate noise caused by liquid accumulation. The application further discloses a control device for the variable displacement compressor air conditioner, a variable displacement compressor air conditioner and a storage medium.

A variable-capacity electric propulsion motor cooling structure according to the present invention is a structure for cooling a variable-capacity electric propulsion motor comprising: a rotor shaft; a rotor core having the shape of a circular plate such that the rotor shaft is coupled through the center thereof, multiple permanent magnets buried along the circumferential direction of the rotor core; a winding coil disposed so as to surround the outer periphery of the rotor core; a stator core disposed so as to surround the outer periphery of the winding coil so as to undergo a magnetic force reaction with the permanent magnets; a motor housing disposed so as to surround the outer periphery of the stator core in a hollow cylinder shape, both sides of the motor housing being open; and a pair of covers coupled to both open sides of the motor housing, respectively, such that the rotor shaft is coupled through the center of each cover, a containing space being formed inside each cover. Multiple cooling holes are formed at a predetermined interval along the circumferential direction through both surfaces of the stator core positioned in the same direction as the axial direction of the rotor shaft. Cooling tubes are coupled to the multiple cooling holes, respectively. Cooling water introduced through one of the pair of covers is discharged through the other cover after passing through the cooling tubes.

An energy efficient heating, ventilation, and air conditioning (HVAC) system includes a variable capacity compressor configured to operate at a plurality to operating capacities and a control system communicatively coupled to the variable capacity compressor. The control system is configured to receive data indicative of a temperature within a conditioned space, receive data indicative of a set point temperature of the conditioned space, initialize operation of the variable capacity compressor, and ramp up operation of the variable capacity compressor to an intermediate operating capacity of the plurality of operating capacities during initial operation of the variable capacity compressor, where the intermediate operating capacity is less than a full operating capacity of the plurality of operating capacities.

The invention is a variable capacity oak lid that can be custom fitted to existing stainless-steel, concrete, or other material tanks, and fitted with an exterior air bladder gasket which allows the lid to float on top of the liquid to prevent airspace, fitted with an airlock to allow gas to escape, and to be pressurized so that no air can get in. While similar stainless lids exist in the marketplace, there are no similar oak lids yet available, nor has there been a previous patent application for a tank lid strategically constructed in this manner.

A variable-capacity turbocharger has: a turbine housing that accommodates a turbine impeller; a variable nozzle assembly with a nozzle vane arranged in a nozzle flow channel provided around the turbine impeller in the turbine housing, and a drive mechanism designed to drive the nozzle vane; a disc spring designed to bias the variable nozzle assembly in an axial direction so that it is pressed against a section of the turbine housing; and an engagement section in which the variable nozzle assembly and the turbine housing engage in such a way as to limit displacement of the variable nozzle assembly in a circumferential direction, the engagement section being located in a region radially outside a range of motion of the nozzle vane.

A variable-capacity turbocharger has: a turbine housing that accommodates a turbine impeller; a variable nozzle assembly with a nozzle vane arranged in a nozzle flow channel provided around the turbine impeller in the turbine housing, and a drive mechanism designed to drive the nozzle vane; a disc spring designed to bias the variable nozzle assembly in an axial direction so that it is pressed against a section of the turbine housing; a pin extending from the bearing housing; and a U-groove provided on the variable nozzle assembly that allows the insertion of a distal end of the pin.The U-groove has a pair of inner wall surfaces designed as parallel flat planes intersecting in the circumferential direction, and which hold the distal end of the pin between them in the circumferential direction, with the distal end of the pin being press-fitted between the inner wall surfaces.

The invention provides a variable displacement vane pump which can adjust the full cut-off pressure in a wide range from low pressure to high pressure by using a single pump without changing a spring. A vane pump is provided with: a plurality of vanes slidably protruding from a rotor that is rotatable about a shaft; a cam ring having an inner peripheral surface in sliding contact with the outer peripheral end of the blade, and being eccentrically rotatable with respect to the shaft; a high-pressure-side spring that urges the cam ring via the plunger; a low-pressure-side spring which is at least partially housed in the holder and which biases the cam ring via the holder and the plunger; a stopper provided on an end side of the low-pressure-side spring opposite to the plunger side; and a pressure adjusting part capable of adjusting the position of the stopper from a position where the stopper does not abut against the stopper even if the cam ring moves the holder to a position where the stopper always contacts the holder or more.

A border for a raised bed includes a plurality of wall elements connected to form an enclosure. Each wall element has a first end face and an opposing second end face, both provided with fastening elements. Each wall element further includes a first longitudinal side extending between the first and second end faces and a second longitudinal side opposite the first, extending parallel thereto. The wall elements are connected to adjacent wall elements via plug connections at their first and second end faces. Each wall element has a cross-section perpendicular to the longitudinal sides, comprising alternately arranged first and second sections. The first and second sections extend on opposite sides of the longitudinal center axis of the cross-section. An intermediate bottom is positioned at a variable height within the enclosure by engaging the first and second sections of opposing wall elements, perpendicular to the wall elements.

The nozzle member of at least one embodiment of the present disclosure is a nozzle member included in a variable nozzle mechanism of a variable capacity turbocharger. The nozzle member is composed of an iron-based alloy. In a case where a total value of a carbon content and a nitrogen content of the nozzle member is set as A mass%, and a total value of 0.5 times a tungsten content and a molybdenum content is set as B mass%, a relationship indicated by the following expression is satisfied: 6.6 x A + B ≥ 8.0. A value of the total value B is 1.5 mass% or more.

The present invention relates to the field of air-conditioning technology, and in particular to a control method, medium, device and air conditioner for a T3 working condition air conditioner. The present application aims to solve the problem of attenuation of refrigeration capacity due to an increase in the compression ratio of the compressor in a high-temperature environment in air-conditioning areas with T3 climate types. To this end, the T3 working condition air conditioner of the present application includes a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger connected in sequence through a refrigerant pipe. The compressor is a variable capacity compressor, and the variable capacity compressor has two compression cylinders. The control method includes: obtaining the exhaust temperature of the variable capacity compressor during refrigeration operation; judging the difference between the exhaust temperature and a preset temperature threshold; determining the working mode of the variable capacity compressor based on the judgment result; and controlling the operation of the variable capacity compressor based on the working mode. The present application can keep the compressor in the high-efficiency frequency range, reduce the risk of leakage, avoid attenuation of refrigeration capacity, and ensure the refrigeration effect.

To provide a hydraulic unit that can generate pressure and a flow rate as ordered using a variable capacity type hydraulic pump.SOLUTION: A hydraulic unit 100 includes a hydraulic controller 124 that calculates a command pump capacity q in accordance with discharge pressure P, calculates a pressure control flow rate Qp of achieving a target pressure Pd in accordance with discharge pressure P so as not to exceed a maximum allowable torque of a motor 104 and a maximum pump capacity qmax of a hydraulic pump 102, sets the smallest flow rate in the target flow rate Qd, pressure control flow rate Qp, and maximum flow rate Qmax, as a command flow rate Qr, and calculates a command rotational number N of the motor 104 on the basis of the command flow rate Qr and the command pump capacity q.SELECTED DRAWING: Figure 2

The utility model discloses a variable capacity piston device, even in the case where the supporting ball uses steel material, can fully ensure the wear resistance, load resistance, can realize the low cost. The structure of the utility model discloses a variable capacity piston device is characterized in that, have: cylinder barrel (110), it is supported in the casing (102) in the mode that can rotate with the shaft (104) together, a plurality of pistons (112) are inserted in the cylinder barrel (110) in the mode that can slide along the axial direction, the inclined plate (120) makes the stroke change of piston (112), and two supporting balls (130) support the inclined plate (120) as can rotate, and the supporting ball (130) uses the steel material of tempering temperature 500 DEG C or more, and the surface is implemented with soft nitriding treatment.

A variable capacity mechanism according to the present invention comprises: a plurality of nozzle vanes; nozzle rings which are disposed so as to be spaced apart from each other along the axes of the plurality of nozzle vanes such that the plurality of nozzle vanes are sandwiched therebetween; and a drive ring which is disposed on the nozzle ring support surface side of one nozzle ring opposite from the flow path formation surface of the nozzle ring that faces the plurality of nozzle vanes and which can rotate about the rotation axis of a turbine rotor while being in contact with the nozzle ring. At least one of a first portion of the nozzle ring which is in contact with the drive ring and a second portion of the drive ring which is in contact the nozzle ring is provided with a removal structure which removes a deposit adhering to the first portion of the nozzle ring and / or the second portion of the drive ring.

A fluid pressure driving device is provided. A hydraulic driving device (110) of the present embodiment is provided with a main pump (15) and a single pressure gauge (11). The main pump is a swash plate type variable displacement type and split type hydraulic pump that controls the discharge flow rate of the first working oil and the discharge flow rate of the second working oil that are discharged to a plurality of pressure oil supply paths, the first pressure oil supply path (120) and the second pressure oil supply path (121), using one swash plate (23). The pressure gauge (11) measures the intermediate pressure of the discharged fluid at the merging point (123a) between the first pressure oil supply path (120) and the second pressure oil supply path (121). The discharge flow path is controlled based on the pressure value measured by the pressure gauge (11).

Problem: Provide a control calibration apparatus for a variable-capacity pump that can increase the flow control accuracy of the variable-capacity pump and a method thereof. Solution: The control calibration apparatus of the variable capacitance pump includes a controller that outputs a value of current for a flow rate command of the variable-capacity pump and a flow sensor that measures a flow rate of the variable-capacity pump. The controller has a function for obtaining a quadratic function formula that is a current-to-flow characteristic for flow control of the variable-capacity pump from a first value of current when the maximum flow rate of the variable-capacity pump is measured by the flow rate sensor, a second value of current when the minimum flow rate of the variable-capacity pump is measured by the flow rate sensor, and a fixed value of current corresponding to a fixed flow rate based on the specifications of the variable-capacity pump.

An abnormality diagnosis system according to one embodiment of the present invention is an abnormality diagnosis system for a variable capacity hydraulic pump (31 or 35) mounted on a construction machine, and is provided with: a pressure gauge (71 or 72) for detecting the suction pressure, discharge pressure, or discharge pressure of the hydraulic pump (31 or 35); and a control device (6). The control device (6) determines the presence or absence of an abnormality in the hydraulic pump (31 or 35) on the basis of the pressure detected by the pressure gauge (71 or 72) in a state in which the construction machine is operated under predetermined diagnostic conditions. The prescribed diagnostic condition is that the rotational speed and load of the hydraulic pump (31 or 35) are kept constant and the capacity of the hydraulic pump (31 or 35) is kept at a prescribed value greater than the minimum value.

The invention relates to the technical field of scroll compressor equipment, in particular to a variable capacity adjusting device and method of a scroll compressor, the adjusting device comprises a temperature sensing unit and a transmission unit, the temperature sensing unit comprises a temperature sensing bulb, the temperature sensing bulb is arranged at the position of an air inlet of the scroll compressor, and the temperature sensing bulb is used for sensing the temperature change of an air suction opening of the compressor; the transmission unit comprises a pressing piece, the pressing piece is connected with a temperature sensing bag, the temperature sensing bag can control the pressing piece to move, an elastic piece is connected to the pressing piece, and the pressing piece is connected with the static scroll plate through the elastic piece. The scroll compressor has the effect that the variable capacity adjusting convenience of the scroll compressor in the using process is improved.

A hydraulic system of an embodiment of the present application includes a variable displacement hydraulic pump that discharges working oil and includes a swash plate; a swash plate angle sensor that measures an angle of the swash plate; a swash plate drive piston that moves the swash plate of the hydraulic pump according to a change in pressure applied to a large diameter portion; a swash plate control hydraulic line for supplying a portion of working oil discharged by the hydraulic pump to the large diameter portion; a control valve provided on the swash plate control hydraulic line and that controls a flow rate of working oil supplied to or discharged from the large diameter portion; an electronic proportional pressure reducing valve that generates a pilot pressure to be transmitted to one side of the control valve; an operating device that generates an operating signal; and a control device that controls the electronic proportional pressure reducing valve according to the operating signal of the operating device and angle information of the swash plate angle sensor.

This rotary swash plate hydraulic pump includes: a casing; a cylinder block including a cylinder bore and disposed in the casing so as to prevent relative rotation of the cylinder block; a piston that is inserted into the cylinder bore; a rotary swash plate that is housed in the casing so as to be rotatable about an axis and reciprocates the piston; and a variable capacity mechanism that changes an effective stroke length of the piston. The variable capacity mechanism includes a spool that changes the effective stroke length of the piston by adjusting opening and closing of the cylinder bore that corresponds to the spool. The cylinder block includes a spool hole into which the spool is inserted.

The utility model discloses a bus duct variable-capacity section with a protection structure, which belongs to the technical field of bus duct variable-capacity sections and comprises a bus duct variable-capacity section body, the surface of the bus duct variable-capacity section body is fixedly connected with a first fixing block, and the surface of the first fixing block is fixedly connected with a first limiting rod. The surface of the first limiting rod is movably connected with a protection plate. The surface of the protection plate is fixedly connected with a second fixing block, and the interior of the second fixing block is in threaded connection with a two-way threaded rod. The inner wall of the bus duct variable capacitance joint body is fixedly connected with a motor, and the output end of the motor is fixedly connected with a first rotating shaft. According to the bus duct variable-capacity joint with the protection structure, the second bevel gear is connected with the fan, so that the heat dissipation efficiency of the device is improved, the fan can quickly break the retention state of hot air, heat is dissipated in time, the problems of electrical performance reduction and part aging caused by overheating are reduced, and the service life of the device is prolonged.

A turbine is provided with: a turbine wheel; a turbine casing including a flow path for a gas flow received from an intake port; a variable capacity mechanism configured inside the turbine casing and receiving the gas to direct the turbine wheel, the variable capacity mechanism having a nozzle ring of a circular plate shape and a nozzle vane unit including: a nozzle vane configured on a main face side of the nozzle ring, a nozzle shaft extending from the nozzle vane and penetrating the nozzle ring, and a nozzle link plate configured on a back face side of the nozzle ring and linked to a front end of the nozzle shaft; and a butterfly spring applying a force in a direction of a nozzle axis line in a state of contacting the nozzle vane unit. The nozzle vane is brought into abutment with a portion facing the nozzle vane by the force.

The utility model belongs to the technical field of breeding equipment, and particularly relates to a variable-capacity feeding tray. The feeding disc comprises a base plate, a fixing cylinder is fixedly connected to the center of the top of the base plate, a plurality of discharging ports communicated with the base plate are formed in the lower end of the fixing cylinder at intervals in the circumferential direction, a mounting hole is formed in the upper portion of the fixing cylinder, a waterline is sleeved with the mounting hole, and feed conveyed by the waterline is conveyed into the base plate through the fixing cylinder; a blocking cover is arranged outside the chassis, the upper end of the blocking cover is fixedly connected with the upper portion of the fixing cylinder, the lower end of the blocking cover is slidably connected with the chassis, and the size of the space between the chassis and the blocking cover is adjusted by sliding the blocking cover up and down relative to the chassis. The feeding tray solves the problems that an existing feeding tray is not universal in size and capacity, and big chickens and small chickens need to be fed with feeding trays of two capacities respectively.

The variable-capacity compressor comprises a second air cylinder and a second flange, a pin hole is formed in the second flange, a pin valve is arranged in the pin hole, and one end of the pin hole is connected with a variable-capacity cavity, so that one end of the pin valve can bear pressure in the variable-capacity cavity; the other end of the pin valve can introduce pressure in a shell cavity of the compressor to serve as back pressure, a first pressure relief channel is formed in the pin valve, a second pressure relief channel is formed in the second flange, and when the pressure in the variable-volume cavity is larger than preset pressure, the variable-volume cavity can be sequentially communicated with the first pressure relief channel and the second pressure relief channel. And when the pressure in the variable volume cavity is smaller than the preset pressure, the variable volume cavity is disconnected from the first pressure relief channel and the second pressure relief channel. According to the invention, the problems of noise, jittering and the like generated when the variable-capacity compressor is started after long-time low-temperature standing can be solved.

The invention relates to the technical field of intelligent household appliances, and discloses an air conditioner variable capacity control method which comprises the steps that under the condition that an air conditioner is started to run, the indoor environment temperature and the target temperature are obtained; according to the difference value between the indoor environment temperature and the target temperature, the preset temperature is determined so as to obtain the first duration needed for the indoor environment temperature to reach the preset temperature; and according to the first duration and the preset duration, the initial operation frequency of variable capacity control of the compressor is determined, and the compressor is controlled to execute. According to the method, the initial operation frequency of variable capacity control of the compressor is determined in a self-adaptive mode according to the preset temperature and the first duration under different working conditions. In this way, the initial operation frequency of variable-capacity control of the compressor is matched with the actual working condition, so that the actual requirement of a user can be met, and discomfort of the user is avoided. The invention further discloses a device for air conditioner variable volume control, an air conditioner and a computer readable storage medium.