636 results about "Centrifugal compressor" patented technology

The embodiment of the invention provides a centrifugal compressor performance data determination method and a centrifugal compressor performance optimization method, and belongs to the technical field of centrifugal compressors. The method comprises the steps that the inlet guide vane opening degree and the compressor rotating speed are combined to obtain an operation mode combination; grouping the original compressor operation parameters based on the operation mode combination to obtain grouped operation parameters, wherein the grouped operation parameters comprise evaporator parameters, condenser parameters, refrigerating capacity of a refrigerating machine and unit operation efficiency parameters; calculating a flow coefficient and a pressure ratio of a compressor according to evaporator parameters, condenser parameters and refrigerating capacity of a refrigerator; the isentropic compression efficiency of the compressor is calculated according to the condenser parameters; calculating the isentropic compression efficiency of the compressor unit based on the unit operation efficiency parameter and the isentropic compression efficiency of the compressor; and constructing a performance curve based on the compressor flow coefficient, the pressure ratio, the compressor isentropic compression efficiency and the compressor unit isentropic compression efficiency. According to the embodiment of the invention, the performance data of the centrifugal compressor can be accurately obtained, and the accuracy of performance optimization is improved.

The utility model discloses a heat management system based on an air floatation centrifugal compressor and a machine room. The heat management system comprises the air floatation centrifugal compressor, an evaporator, a condenser and a throttling element. An air inlet of the air flotation centrifugal compressor communicates with an outlet of the evaporator, a liquid cooling module is arranged in the air flotation centrifugal compressor to cool a motor of the air flotation centrifugal compressor, an inlet of the liquid cooling module is connected to an outlet of the condenser through a first control valve, and an outlet of the liquid cooling module is connected to an inlet of the evaporator. The evaporator is arranged at the to-be-cooled device to absorb heat emitted by the to-be-cooled device. An inlet of the condenser communicates with an exhaust port of the air flotation centrifugal compressor, and the throttling element is arranged at an inlet of the evaporator and used for conducting throttling expansion on the cooled refrigerant. The heat management system is applied to the machine room, an oil separator and corresponding pipelines are omitted, the overall structure is simple, and meanwhile the heat dissipation efficiency can be improved.

The centrifugal compressor provided by the application comprises an impeller, a diffuser and a backflow device. The diffuser comprises a cover plate and a partition plate. The cover plate is installed on the backflow device and forms a containing cavity with the backflow device. The partition plate is accommodated in the containing cavity and divides the containing cavity into a supply air passage communicated with an air inlet. The supply air passage comprises a diffuser passage, a reversing passage and a backflow passage. The reversing passage has opposite first and second side walls. The first side wall is arranged on the inner side wall of the cover plate, and the second side wall is arranged on the outer side wall of the partition plate. The first side wall comprises a first arc surface, a second arc surface and a first plane arranged between the first arc surface and the second arc surface. The second side wall comprises a third arc surface and a fourth arc surface. According to the scheme, the gas in the diffuser passage is smoothly transitioned into the backflow passage, and the loss of gas flow from the diffuser passage into the backflow passage is avoided.

The invention relates to a centrifugal compressor PIV speed measurement and analysis method, device and equipment and a medium. The method comprises the following steps: acquiring flow field optical measurement data of the centrifugal compressor through a particle image velocity measurement technology; inputting optical measurement data of the flow field into a deep learning model, and extracting dynamic characteristics of the flow field through a characteristic extraction layer of the deep learning model; reconstructing the dynamic characteristics of the flow field into a three-dimensional flow field velocity vector field by using a velocity vector reconstruction layer in the deep learning model; and generating a velocity measurement analysis result based on the three-dimensional flow field velocity vector field. By adopting the method, the multi-scale dynamic characteristics in the complex three-dimensional rotating flow field of the centrifugal compressor can be effectively captured, high-precision three-dimensional velocity vector reconstruction is realized, and the spatial resolution and robustness of flow field measurement are improved.

A discharge system for bulk tank trailers unloads dry bulk material from a bulk product trailer that is configured to be pulled by a vehicle. The discharge system includes a centrifugal compressor, a drive mechanism and a speed increaser. The centrifugal compressor is configured to deliver compressed air to force the dry bulk material from the bulk product trailer and convey the dry bulk material to a storage tank. The drive mechanism furnished rotational motion to the centrifugal compressor (e.g., via a power take-off of the vehicle). The speed increaser is disposed between the centrifugal compressor and the drive mechanism and is configured to increase the speed of the rotational motion furnished by the drive mechanism to the speed compressor. The drive mechanism may include a hydraulic system configured to drive a liquid product pump for pumping liquid product from a liquid product storage tank trailer pulled by the vehicle.

To provide a centrifugal compressor which can reduce a processing cost while suppressing reduction in efficiency due to power loss while reducing a flow rate of a surge point flow.SOLUTION: In a centrifugal compressor of the present disclosure, a casing includes an inflow passage in which a fluid flows, a discharge passage, and an impeller storing part which stores an impeller and has a facing face forming an outer passage extending in one axial direction from an upstream end of the discharge passage along with a cover. The inflow passage includes a limit point at a position where a center angle of an arc of a chip-side flat face from a reference point toward a downstream side is 30°. The casing includes a circulation passage which communicates a region between a plurality of blades and the inflow passage, and communicates with an end part on one axial direction side of the outer passage. An inlet-side opening on the impeller side of the circulation passage is positioned at a boundary between an upstream end face of the cover and the casing. An outlet-side opening on the inflow passage side of the circulation passage is positioned on an upstream side from the limit point.SELECTED DRAWING: Figure 2

The invention discloses a method for calculating the strength of an end face tooth coupling of an energy storage centrifugal compressor, relates to a method for calculating the strength of an end face tooth coupling, and aims to solve the problem that a method for accurately judging whether the strength of the end face tooth coupling of the compressor is qualified or not by a conventional end face tooth calculation and checking method does not exist at present. The method is implemented according to the following steps that firstly, axial component force generated when the end face teeth transmit torque is obtained; 2, the axial expansion difference of the end face teeth, the main shaft and the screw at the working temperature is calculated, and the actual pre-tightening force of the screw during unit operation is calculated; 3, impeller thrust generated by the front and back pressure difference of the impeller is calculated, the effective tooth surface area of the end face teeth is calculated, and the end face tooth root bending stress, the end face tooth maximum extrusion stress and the end face tooth axial tensioning force safety coefficient of the centrifugal compressor are calculated; and 4, judging the strength of the end face tooth coupling of the energy storage centrifugal compressor. The invention belongs to the field of end face tooth coupling checking.

The invention relates to a centrifugal compressor high-altitude environment dynamic simulation test system. The system comprises a compressor test module; the high-altitude environment simulation module comprises an air inlet surge tank, an air inlet assembly and a first air exhaust assembly which are arranged at the upstream of the air inlet pipeline, and an air exhaust surge tank and a second air exhaust assembly which are arranged at the downstream of the air exhaust pipeline; a measurement module; the control module is used for comparing the first actually-measured pressure value with a target altitude pressure value of the air inlet end and controlling the air inlet amount of the air inlet assembly and the air suction amount of the first air suction assembly according to a comparison result, so that the pressure of the air inlet pressure stabilizing tank is stabilized at the target altitude pressure of the air inlet end; and the control module compares the second actually measured pressure value with the target altitude pressure value of the exhaust end, and controls the air suction amount of the second air suction assembly according to the comparison result, so that the pressure of the exhaust surge tank is stabilized at the target altitude pressure value of the exhaust end. It is ensured that test data can truly reflect the actual plateau working condition performance of the gas compressor.

The invention discloses an organic Rankine cycle power generation system driven by exhaust waste heat of a centrifugal compressor, and the system comprises a self-adaptive variable structure waste heat collection module which drives a fin through a stepping motor to adjust a helical angle, matches exhaust temperature fluctuation, and is provided with a double-medium heat exchange loop to realize dynamic storage and release of waste heat; according to the cascade expansion power generation module, two-stage expansion machines are connected in series with a pressure matcher, and a working medium diverter valve is configured to dynamically adjust the working medium proportion; the intelligent coupling power generation and electric energy management module integrates a magnetic resistance switching type permanent magnet synchronous generator technology and a virtual synchronous generator technology and is provided with a dynamic reactive power compensation device; and the multi-parameter cooperative control module optimizes system parameters based on a model prediction control algorithm, and introduces entropy production analysis to monitor irreversible loss. The self-adaptive structure optimizes the heat exchange process, cascade expansion widens the working condition adaptation range, cooperative control reduces irreversible loss, the self-repairing system prolongs the maintenance period, and deep utilization and efficient conversion of waste heat of the centrifugal compressor are achieved.

The invention discloses an intelligent load distribution system and method for a centrifugal compressor unit. The system comprises a data sensing module, an intelligent decision-making module, an instruction execution module and a model updating module. The method comprises the steps that operation parameters of multiple parallel centrifugal compressors are synchronously collected in a high-precision mode through an industrial real-time network supporting hardware timestamps, and time-aligned system state observation data are obtained; constructing a state vector based on the data and a load prediction result, inputting a deep reinforcement learning agent fused with compressor physical characteristic constraints, and generating a load distribution instruction and a unit start-stop suggestion; after safety boundary verification is conducted on the original action, the guide vane opening degree is adjusted through a feedforward speed planning and fuzzy self-adaption PID composite servo control algorithm, and starting and stopping operation is executed; meanwhile, empirical data are collected online, and model parameters are periodically and finely adjusted. According to the invention, efficient, safe, accurate and self-evolution compressor group control is realized.

The utility model provides a stand-alone system air suspension frequency conversion centrifugal water chilling unit which comprises a circulation main loop formed by connecting an evaporator, an air suspension centrifugal compressor, a condenser and an economizer through refrigerant pipelines so as to form a refrigeration circulation loop; wherein throttling pipelines are respectively arranged on a refrigerant pipeline between the condenser and the economizer and a refrigerant pipeline between the economizer and the evaporator, so that secondary throttling is carried out on a liquid refrigerant in the refrigerant pipelines; one end of the air supply pipeline is communicated with the economizer, and the other end of the air supply pipeline is communicated with the air suspension centrifugal compressor; the variable-frequency cooling pipeline comprises a frequency converter, one end of the frequency converter is communicated with the condenser through a frequency converter cooling liquid inlet pipeline, and the other end of the frequency converter is communicated with the evaporator through a frequency converter cooling air return pipeline. The unit provided by the utility model can effectively improve the refrigeration efficiency and performance, and reduce the energy consumption and operation cost, thereby realizing the efficient, energy-saving and environment-friendly refrigeration effect.

A turbocharger heat management structure relates to the technical field of internal combustion engine supercharging devices and comprises a radial flow turbine, a centrifugal compressor and a bearing system which are connected, and the heat management structure is arranged between the radial flow turbine and the bearing system. The heat management structure comprises a first heat insulation cover, a second heat insulation cover and a third heat insulation cover which are in a revolving body metal sheet shape and arranged at the turbine back disc, a first heat insulation cavity is formed between the first heat insulation cover and the second heat insulation cover, a second heat insulation cavity is formed between the second heat insulation cover and the third heat insulation cover, and a third heat insulation cavity is formed between the third heat insulation cover and the annular cooling groove. The first heat insulation cavity communicates with a gap in the turbine back disc, and the third heat insulation cavity is connected with a cold air hole. The third heat insulation cavity, the second heat insulation cavity and the first heat insulation cavity are sequentially communicated through an air guide structure. On the premise that the weight and the size are not greatly increased, the heat insulation efficiency is greatly improved, and the purpose of actively and efficiently cooling a key area is achieved.

A steam compressor, specifically a multistage centrifugal compressor which could have an operating pressure between 0.2 bar and 12 bar and be used in industrial processes with heat pumps or for the mechanical compression of steam in general.The present invention is to improve the state of the art for steam compressors by means of an optimized architecture that minimizes the manufacturing cost, such that it makes it comparable to that of a fan, without compromising its typical performance.

A multistage centrifugal compressor includes a rotational shaft, a centrifugal impeller fixed to the rotational shaft, and a return flow path formed by a shroud and a hub. In the return flow path, a radial flow path, an L-shaped bend flow path, and an axial flow path form an L-shaped flow path. A return vane is arranged in the radial flow path and the L-shaped bend flow path. A portion of a rear edge of the return vane near a hub-side connection part has a linear shape and a portion of the rear edge of the return vane near a shroud-side connection part has a curved shape protruding downstream, the rear edge of the return vane extended toward an inner radial side to an inside of the L-shaped bend flow path. The hub-side connection part of the return vane is on the inner radial side of the shroud-side connection part.

An environmental control system (ECS) of an aircraft, having a heat exchanger; a compressor that receives a first airflow from a first air source, compresses the first airflow, and directs the first airflow to the heat exchanger; an axial flow turbine that receives a second airflow from a second air source, extracts energy from the second airflow, and directs the second airflow to the heat exchanger, wherein the heat exchanger directs the first airflow to a cabin of the aircraft and directs the second airflow overboard; and a shaft connected between the turbine and the compressor.

Systems and methods are described for a hybrid centrifugal compressor pump with an integrated geared drive system that allows multiple pump and compressor stages to share the same drive system. This helps reduce the number of parts in the overall fluid processing system. As a result, embodiments of the hybrid compressor pump can achieve a longer lifespan, resulting in increased efficiency and reduced costs.

This utility model discloses a centrifugal compressor main shaft structure, including an impeller with a central through-hole mounting hole. A main shaft body is fitted inside the mounting hole. The end face of the impeller has a coaxial mounting groove. A flange is fixedly connected to the mounting groove by a first bolt. The flange is fixedly fitted onto the outer edge of the main shaft body. A cavity is provided inside the main shaft body, and a fastener is slidably connected within the cavity. The outer edge of the fastener abuts against a fixing member, which slidably passes through the cavity and is inserted into the mounting hole. This utility model replaces the traditional spline connection with a composite fixing method of flange bolt connection and insert-slot locking, significantly reducing the requirements for the machining accuracy of the main shaft and impeller inner holes, while avoiding the stringent limitations of heat treatment processes, thus significantly reducing processing difficulty and manufacturing costs.

The invention discloses a full-dynamic-pressure turbine type low-temperature refrigerating device and method. The device comprises a two-stage centrifugal compressor, a heat exchanger, a low-temperature turbine expander, a gas storage tank, a filter, a valve, a water cooling machine and a cold using device. Closed circulation is adopted in the device, and the whole device is integrated into a skid-mounted device to output cooling capacity outwards. The device adopts a full-dynamic-pressure turbine type structure and is supported by a gas bearing; the low-temperature turbine expander and the low-temperature heat exchanger are in a heat insulation environment; the low-temperature turbo expander adopts pressurization braking or fan braking; a three-stage integrated heat exchanger or a separated heat exchanger is adopted for skid-mounting; the skid-mounted system comprises a charging mode and a non-charging mode. The whole device runs without oil, and is clean and environment-friendly; the integration level of the system is greatly improved through the three-stage integrated heat exchanger and the skid-mounted structure; different braking modes are set, so that the applicability of the device is improved; the refrigerating temperature and the refrigerating capacity can be accurately controlled through the full-pressurization mode, the partial-pressurization mode and the bypass valve.

The utility model discloses a centrifugal compressor cylinder body boring device with fixed establishment, specifically related to boring device technical field, including the bed and the processing platform, the front end of bed top is installed with processing platform, the back of processing platform top is provided with fixed subassembly, the fixed subassembly includes the clamping station, screw rod, second motor, screw sleeve, sliding slot, sliding block, movable platform and the clamping plate, the back of processing platform top is installed with the clamping station. The utility model discloses be provided with the clamping station and the clamping plate, two sets of clamping station, the clamping station symmetrical distribution is in the back position of processing platform top, when starting second motor drive screw rod and rotating, screw rod and screw sleeve cooperation, can drive the clamping plate of front end and each other close, along with compressor casing and place on the processing platform and place, two sets of clamping plate are clamped in the both sides of compressor casing, can assist to the fixed processing of compressor casing, has realized the supplementary clamping function of this boring device when using.

Integrally geared centrifugal compressor systems are described that include eccentric cartridges that house bearings and seals to maintain rotor concentricity for a variety of pinons integrated in a fixed gearbox design to provide multiple impeller speeds with a single gearbox design. In an aspect, a system includes, but is not limited to, a pinion configured to be rotated by a bull gear about a rotational axis; a rotor coupled to the pinion; and an eccentric cartridge configured to house a bearing assembly through which the rotor extends to support rotation of the rotor, the eccentric cartridge having an outer surface and an inner surface, wherein the inner surface is eccentric relative to the outer surface to align the rotational axis with a center axis of the bearing assembly.

The utility model provides an oil leakage treatment device for a centrifugal compressor coupling breathing port, which comprises a liquid level meter device, a breathing port connecting part used for being connected with the centrifugal compressor coupling breathing port, an oil mist collecting barrel and an oil discharge device oil discharge valve, the liquid level meter device, the breathing opening connecting part and the oil discharging device oil discharging valve are all connected with the oil mist collecting barrel.

The invention discloses a supercritical CO2 centrifugal compressor and turbine performance test combined test bench system and method. The device is mainly composed of a compressor, a turbine, an electric heater, a cooler, a surge tank, a CO2 storage tank, valves and pipelines, a motor drives the compressor through a gearbox and is connected with a rotating shaft of the turbine through a clutch, and a main circulation loop is sequentially connected with the compressor, the turbine, the cooler, the surge tank and the electric heater in series. Through cooperation of bypass valve switching, clutch separation and reunion and a system control strategy, seamless switching of five test modes can be achieved without shutdown or pipeline disassembly and assembly, and the five test modes comprise a turbine connection and independent compressor performance test, a turbine performance test and a key component performance test. And a complete supercritical CO2 Brayton cycle system stable operation and control strategy verification test is carried out. The system has the characteristics of high efficiency and high test continuity, and provides a multifunctional and low-cost comprehensive test platform for research and development of a supercritical CO2 power device.

The application discloses a kind of data center with wind liquid integration wind wall refrigeration system and its control method, and the application relates to data center refrigeration and energy-saving control technical field, system is by host module and at least one parallelly extended air cooling module composition, air cooling module is configured with two sets of independent controllable wind side heat exchange structure, for water coil heat exchange structure and refrigerant medium coil heat exchange structure, host module integrates oil-free suspension bearing centrifugal compressor unit, water / refrigerant special heat exchanger, special low-pressure refrigerant medium pump, multiple high-precision electric regulating valve, liquid cooling frequency converter and intelligent control unit, air cooling circuit and liquid cooling circuit share same kind of special low-pressure refrigerant medium and same water / refrigerant special heat exchanger, liquid cooling side does not need independent circulating pump and independent heat exchange equipment, control method is switched according to cold source input temperature Self-adapting four kinds of working conditions of summer full-load refrigeration, winter natural energy-saving, transition season constant temperature adaptation and waste heat recovery low carbon utilization.

A housing 1 for a centrifugal compressor 40 with a centrifugal impeller 42 has a front cover 2. The front cover 2 defines a central axis 6 and has an axially oriented inlet 8, a diffuser 10 in fluid connection with the inlet 8, a collector 12 in fluid connection with the diffuser 10, and a rear cover opening which is opposite of the inlet 8 and designed to sealingly receive a rear cover 4. The diffuser has a first diffuser wall 30 and the collector has a collector wall 15. The front cover 2 is made of a three-dimensionally shaped base 22 and a separate disk-shaped diffuser wall part 24 which is attached to the three-dimensionally shaped base 22 for forming the diffuser 10 and the collector 12.

A compressor according to one embodiment of the present disclosure is provided with a first discharge flow path that is partitioned by a first diaphragm and a second diaphragm and that connects an outer-diameter end of a first impeller and an inner-diameter end of a volute, and a plurality of spacer vanes disposed in the first discharge flow path. The volute includes a first portion that is in contact with a radially outer edge part of the diaphragm, a second portion that is connected to the downstream end of the first portion and does not contact the radially outer edge part of the diaphragm, and a second discharge flow path that is connected to the downstream end of the first discharge flow path inside both the first portion and the second portion. A first gap between spacer vanes that are adjacent via a first region containing a tongue part to which the first portion and the second portion are connected is wider than a second gap between spacer vanes that are adjacent via a second region not containing a tongue part.

The invention relates to a centrifugal compressor energy-saving operation optimization method, in particular to a centrifugal compressor energy-saving operation optimization method based on multi-factor contribution degree analysis. The technical problems that in existing energy-saving operation optimization, the energy-saving effect is not stable, influence factors cannot be accurately adjusted, and efficiency is low are mainly solved. The method comprises the following steps: step 1, data preparation; 2, establishing an energy consumption prediction model; 3, real-time data acquisition and residual calculation are carried out; 4, performing quantitative analysis on the contribution degree of the influence factors; and 5, generating optimization guidance. According to the method, simple energy efficiency judgment is exceeded, quantitative traceability of the energy efficiency deviation source is achieved, and the fuzzy problem of high energy consumption is converted into the specific and operable problem of which parameter is not effective.

A centrifugal compressor is provided. The system includes an overall inlet passage 1, adjustable inlet guide vanes 2, an impeller 3, a variable diffuser 4, a volute casing 5, and an overall outlet passage 6. A tip gap 10 is provided between the impeller and an impeller cover, and a disk cavity is formed between the side of the impeller far from the adjustable inlet guide vanes and the impeller cover. Measurement point densification areas are provided within the impeller, tip gap, and disk cavity, and flow field measurement points are provided at intervals along the fluid flow direction within the impeller, tip gap, and disk cavity, with the spacing between the flow field measurement points located within the measurement point densification area being smaller than the spacing between the flow field measurement points located outside the measurement point densification area. The loss mechanism of the internal leakage flow field between the impeller and the blade tip gap and the external leakage flow field of the disc cavity is studied in detail, and the coupling mechanism of the main flow and leakage flow in the impeller is fully taken into consideration, which improves the granularity, authenticity and reliability of the measurement results and enables the collection of more and more accurate fluid data in the high-density measurement point area.

The present application relates to gas turbine power generation technology field, especially to a kind of low specific speed centrifugal compressor of adaptation hydrogen-containing fuel gas turbine power generation system and its optimization method. Including: meridional flow passage component, impeller and blade assembly, adaptive processing casing assembly, the meridional flow passage component, impeller and blade assembly, adaptive processing casing assembly three maintain coaxial settings, jointly form closed booster flow field, realize the adaptation of hydrogen-containing fuel gas turbine power generation system. Three synergies from structural level solve the core pain points of the stability of existing compressor in hydrogen-containing fuel system, the low efficiency and poor adaptability, provide efficient and stable boost basis for hydrogen-containing fuel gas turbine power generation system.

The invention relates to the technical field of mixed refrigerant centrifugal compressors, and discloses a recovery system for primary leakage gas of sealing gas of a mixed refrigerant compressor, which comprises a compressor, a leaked gas collecting device and a leaked gas recycling device, the leaked gas collecting device comprises a low-pressure end sealing gas collecting device, a high-pressure end sealing gas collecting device, a valve pipeline system and a gas storage tank; the leaked gas recycling device comprises an ejector. According to the scheme, high-pressure leaked gas at the high-pressure end of the compressor drives low-pressure leaked gas at the low-pressure end of the compressor to enter the gas storage tank, high-pressure gas at the high-pressure side of the compressor drives leaked gas of the gas storage tank through the ejector to enter a pipeline at the low-pressure side of the compressor for recycling, so that environmental pollution is reduced, and the use safety is improved; and the maintenance and operation cost of enterprises is reduced.

A centrifugal compressor (10, 50) for a fuel cell system, comprising: a compressor housing (11, 51, 105), a compressor shaft (12), and a bearing arrangement comprising an axial foil bearing (15), wherein the compressor shaft (12) is axially mounted in the compressor housing (11, 51, 105) via the axial foil bearing (15), wherein the compressor housing (11, 51, 105) comprises at least one integrally formed first cooling channel (25, 53, 102) and wherein the axial foil bearing (15) comprises a bearing disk (17, 52, 108) having at least one integrally formed second cooling channel (28, 54, 103, 104) for supplying cooling air for the axial foil bearing (15), wherein the first cooling channel (25, 53, 102) is in fluidic contact with the second cooling channel (28, 54, 103, 104) such that cooling air flows from the first cooling channel (25, 53, 102) to the second cooling channel (28, 54, 103, 104).