152 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 provides a self-adaptive volume-variable intelligent air compressor and a control system thereof, and relates to the technical field of air compressors. The control system comprises a multi-source heterogeneous sensing fusion module, a dynamic manifold optimization control module, a quantum probability fault pre-judgment module, a cross-domain energy cooperative scheduling module, a distributed self-organizing communication module and a self-adaptive meta-evolution module. And a grey Markov chain model and a wavelet decomposition-support vector machine are combined to accurately predict the real-time electricity price and the factory gas consumption load. And according to the predictions, the operation mode of the air compressor is intelligently adjusted through dynamic game equilibrium and a multi-target differential evolution algorithm. In the low ebb period of the electricity price, the operation load is automatically increased by 30%-40%, and meanwhile the gas storage capacity is increased by 25%-35%; and in the peak period of electricity price, stored gas is reasonably released, and the operation load is reduced by 20%-30%. And energy waste caused by unreasonable operation is effectively avoided.

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.

The present invention relates to the technical field of mechanical pumps, and in particular to a liquid variable displacement mechanical pump. A liquid variable displacement mechanical pump comprises a pump body, a diaphragm, an adjusting mechanism and a driving mechanism. A first installation cavity is provided on the pump body, and a heat insulation board is provided in the first installation cavity. The heat insulation board and the diaphragm define the first installation cavity into a liquid flow cavity, an adjusting cavity and a cooling cavity. External liquid passes through the liquid flow cavity, and a regulating liquid is provided in the adjusting cavity, and a cooling liquid is provided in the cooling cavity. Through the arranged adjusting mechanism, flowing external liquid is introduced into the liquid flow cavity, and the regulating liquid in the regulating cavity receives the heat transferred by the external liquid through the heat insulation board. Part of the cooling liquid enters the interior of the bellows, and the cooling liquid in the bellows cools the regulating liquid in the regulating cavity, thereby preventing the diaphragm from being damaged after being heated. The present invention provides a liquid variable displacement mechanical pump to solve the problem that the existing piston diaphragm pump may damage the diaphragm when conveying high-temperature liquid.

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 high-pressure water pump of a road cleaning vehicle, and relates to the technical field of liquid variable-capacity pumps. The high-pressure water pump of the road cleaning vehicle comprises a plunger pump body arranged on the road cleaning vehicle, the plunger pump body comprises a base, a pump body, a motor, a water inlet pipe and a water outlet pipe, and a protective cover is fixedly connected to the top of the base. According to the high-pressure water pump for the road cleaning vehicle, before use, high-temperature air is conveniently blown into the pump body for preheating treatment, during use, water spraying and air blowing cooling are conveniently conducted on the surface of the pump body, after use is completed, high-temperature air is conveniently blown into the pump body for drying treatment, meanwhile, a drying agent can be used for absorbing water, and the drying effect is good. According to the drying device, the use effect and the service life of the drying device are guaranteed, waste heat of air can be recycled, the drying agent can be automatically dried, heat waste is avoided, and meanwhile the absorption efficiency and effect of the drying agent on moisture in the follow-up process are guaranteed.

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.

A turbocharger comprises a turbine impeller, a turbine housing having a flow path through which gas flows that is received from an inlet, a variable capacity mechanism located in the turbine housing and configured to receive the gas from the flow path and direct the gas to the turbine impeller, and a disc spring configured to apply a preload force to the variable capacity mechanism, pressing the variable capacity mechanism against the turbine housing. The turbine housing has a turbine housing flange rear face that is in contact with the variable capacity mechanism in one direction of a turbine impeller's axis of rotation. The variable capacity mechanism has a nozzle ring outer flange main face that is in contact with the turbine housing flange rear face in the direction of the axis of rotation.At least one of the turbine housing flange rear surface and the nozzle ring outer flange main surface is subjected to machining to increase a coefficient of friction.

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.

Load-bearing device (1) for a cargo bicycle (10), in particular for a cargo bicycle (10) in long-john design, with a base part (2) and with a wall (3) adjoining the base part (2) such that the base part (2) and wall (3) define a load-bearing space (LA), characterized by that the bottom part (2) has a first and a second bottom telescopic section (20a, 20b) and the wall (3) has a first and a second wall telescope section (30a, 30b), wherein the first bottom telescopic section (20a) optionally extends the bottom part (2) and the first wall telescopic section (30a) extends the wall (3) in a first extension direction (EW1), and wherein the second bottom telescopic section (20b) selectively extends the bottom part (2) and the second wall telescopic section (30b) extends the wall (3) in a second extension direction (EW2) opposite to the first, preferably opposite, direction of extension, such that the load-bearing space (LA) is increased by expanding it, and wherein a number of power transmission units (4) connect the first to the second bottom telescopic section (20a, 20b) and / or the first to the second wall telescopic section (30a, 30b).

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 belongs to the technical field of liquid variable-capacity machinery, and particularly relates to an explosion-proof transformation method for a compressor and an explosion-proof compressor, and the explosion-proof transformation method for the compressor comprises the steps of carrying out safety evaluation and processing on a compressor body, carrying out explosion-proof transformation on an electrical system, transforming a heating and control part, integrating an explosion-proof electrical control box, and testing and verifying after transformation. The anti-explosion compressor comprises an anti-explosion compressor body meeting the anti-explosion standard, an anti-explosion junction box, an oil pressure difference switch, an anti-explosion electromagnetic valve, an anti-explosion oil heater and a temperature probe are installed on the compressor body, and an anti-explosion electric control box is connected to the outside of the compressor body. And a compressor thermal protector connected with the explosion-proof junction box and a safety barrier electrically connected with the oil pressure difference switch and the temperature probe are arranged in the explosion-proof electrical control box so as to carry out intrinsic safety treatment on the oil pressure difference switch and the temperature probe. According to the invention, a common compressor can be transformed into a compressor meeting the explosion-proof standard requirement under the condition of not increasing too much cost, so that the compressor can be applied to dangerous places, and the application range is widened.

A variable capacity compressor reduces the inflow of foreign matter into a capacity control valve that controls the discharge capacity of a refrigerant. A swash plate compressor (100), which is an example of a variable capacity compressor, is provided with: a suction chamber (150); the compression mechanism is used for compressing a refrigerant therein; a discharge chamber (152) through which the refrigerant compressed by the compression mechanism is discharged; a crank chamber (110) for changing the state of the compression mechanism according to the internal pressure; a capacity control valve (200) that is disposed in a pressure supply passage (156) that connects the discharge chamber (152) and the crank chamber (110), and that controls the discharge capacity of the refrigerant by changing the internal pressure of the crank chamber (110) by increasing and decreasing the flow rate of the refrigerant supplied from the discharge chamber (152) to the crank chamber (110); a filter (210) attached to the periphery of the plurality of introduction ports of the capacity control valve (200); and a direction changing member that changes the supply direction of the refrigerant supplied from the tip opening of the pressure supply passage (156) to the capacity control valve (200).

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.

To provide a swash plate type variable displacement piston pump which can reduce the leakage of a working fluid into a body while suppressing friction between a cradle and a cradle guide.SOLUTION: A constitution of a swash plate type variable displacement piston pump (piston pump 100) of the present invention comprises a body 102, a cylinder barrel 110 rotatably supported in the body together with a shaft 104, a plurality of pistons 112 slidably inserted into the cylinder barrel in an axial direction, a swash plate 120 for changing strokes of the pistons, a cradle formed at the swash plate, and having a cylinder face, a pressure oil groove 128 formed at the cylinder face of the cradle, a cradle guide 102a formed at the body, and being the cylinder face for receiving the cradle, and an oil supply port 102b which is opened at the cylinder face of the cradle guide. The pressure oil groove is formed in a position in which pressure is high in a pressure distribution of the cylinder face of the cradle.SELECTED DRAWING: Figure 1

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.

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 relates to the field of electroplating liquid sealing in the electroplating process, in particular to electroplating equipment with an adjustable sealing coefficient, which comprises a tank body for electroplating operation, an opening is arranged on the side surface of the tank body, a window is arranged in the opening, and a sealing mechanism with an adjustable expansion coefficient is arranged between the window and the opening. And the sealing mechanism is filled with gas to fill a gap between the window and the tank body. According to the utility model, the sealing mechanism with the variable expansion coefficient is used, the variable capacity can cope with the change of gaps, so that the problem of leakage of electroplating liquid is solved, and compared with a traditional sealing strip, the variable capacity of the expansion coefficient can avoid the problem of frequent replacement and save a large amount of cost; furthermore, the mode of expanding by virtue of gas is adopted, so that the positions of the window and the traditional sealing strip do not need to be manually and deliberately adjusted, and therefore, the assembly stability brought by the sealing mechanism is remarkably improved.

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.

The subject application is directed to a variable-capacity storage container including: a bottom wall and a sidewall connected to an edge of the bottom wall, with the bottom wall and the sidewall being configured to enclose together an accommodation space for accommodating objects; and, an opening part, connected to a side of the sidewall away from the bottom wall. The sidewall is elastic. The opening part, when subjected to pressure, is able to be pushed and moved towards the bottom wall to deform the sidewall; when the sidewall is deformed, at least a part of the sidewall changes from a direction towards the outside of the storage container to a direction towards where the opening part is located. The variable-capacity storage container provided in the present application has an advantage of a simple structure, with high-capacity occupancy rate, volume variation rate, and ease of operation.