297 results about "Gas compressor" patented technology

The invention discloses a standby power supply system, and relates to the technical field of transformer substation power supply, a hydrogen production module is used for producing hydrogen by using commercial power or renewable power and then storing the hydrogen in a high-pressure gas storage tank of a hydrogen storage module, and the hydrogen storage module is provided with a one-way valve for the hydrogen to pass through in one way and a gas compressor for compressing the hydrogen to realize hydrogen conveying; after hydrogen stored in the hydrogen storage module is subjected to power generation through a fuel cell through the power generation module, the hydrogen is input into a storage battery pack of an uninterruptible power supply system of the transformer substation, and in the whole process, the control module detects the state of a main power supply and controls starting and stopping of the power generation module. The hydrogen production rate of the hydrogen production module and the hydrogen storage pressure of the hydrogen storage module are controlled, only water is generated in the power generation process, harmful emission is avoided, direct current generated by the fuel cell is directly matched with a UPS storage battery direct current bus, the response speed is high, conversion loss is reduced, the energy utilization efficiency is improved, the system automation degree is high, and the operation and maintenance cost is low.

The invention belongs to the technical field of gas compressors, and discloses an electric power carbon emission accurate measurement and optimization method based on artificial intelligence, and the method comprises the steps: data collection and processing: collecting historical power generation, load, tidal current and carbon emission data, and carrying out the cleaning and standardization; training a dynamic carbon emission factor model, training a carbon emission factor prediction model of each thermal power generating unit by using historical data, and predicting by using the carbon emission factor prediction model to obtain a dynamic carbon emission factor; and training a GNN carbon flow model, and training the GNN model to estimate node carbon intensity by using the power grid data and the dynamic carbon emission factors. According to the invention, two core problems of inaccurate measurement and difficult optimization of the carbon emission of the electric power system are solved. Accurate carbon perception is realized through a dynamic carbon emission factor and a GNN carbon flow model, and an optimal scheduling strategy considering economy, safety and low carbon is searched in a complex power grid environment through reinforcement learning.

The invention provides a control method and system for interaction between emergency simulation training and a real respirator, and the method comprises the steps: collecting control parameters of the respirator, and carrying out the preprocessing of the control parameters, and obtaining an equipment parameter vector; calculating a physiological response state based on the device parameter vector; the physiological response state comprises alveolar pressure and oxygenation estimation; based on the physiological response state, performing quantitative judgment on the disease stage of the patient to obtain a current disease stage, and executing a corresponding evolution instruction set; a medical specification operation reference table is constructed, a target interval is extracted from the current illness state stage and the evolution instruction set, the matching degree of the target interval and a reference interval is calculated, and the reference interval is extracted from the medical specification operation reference table; determining whether to continue evolution, enter relieving or mark training is completed based on the matching degree; the breathing gas of the patient is simulated and restored through the gas compressor and the gas mixing device and is conveyed to the real breathing machine.

The invention relates to the technical field of gas compressor control, in particular to a gas compressor working condition self-adaption frequency conversion control method which comprises the steps that 1, multi-dimensional operation parameters are collected and preprocessed in real time; 2, real-time surge margin calculation and safety boundary dynamic construction are carried out, the real-time pressure ratio and the equivalent correction flow are calculated according to the real-time operation parameters preprocessed in the step 1, a preset compressor characteristic map is inquired, and the real-time surge margin is calculated; step 3, adaptive efficiency optimization and rotating speed decision making based on model prediction; and step 4, smooth issuing and closed-loop monitoring of a frequency conversion instruction: the optimal frequency set value obtained in the step 3 is processed through a smoothing algorithm and then is issued to the frequency converter, and closed-loop monitoring and emergency protection logic processing are carried out in the frequency adjustment process. Through a smooth instruction and closed-loop monitoring, oscillation and unnecessary energy consumption possibly caused in the control process are reduced.

The invention belongs to the field of hydrogen energy, and discloses a hydrogen recovery system and method for a hydrogenation mother station. The system comprises a hydrogen purification device, a product gas and recovery gas compressor, and an integrated pipeline network connecting feed gas, product gas, desorbed gas and a long pipe vehicle. According to the system, through a plurality of recovery paths, hydrogen which is not qualified in purification, desorbed gas and hydrogen replaced in the long pipe vehicle can be recovered to a fuel gas pipe network, a raw material gas inlet or a desorbed gas system respectively, and high-purity hydrogen can be used for carrying out online regeneration on a penetrating adsorbent. According to the invention, comprehensive recovery of the vented combustible gas in the hydrogenation mother station is realized, the hydrogen recovery rate is obviously improved, and the product gas quality and supply stability are ensured.

The invention provides a rotor turnover device, and relates to the technical field of gas turbine equipment. The rotor overturning device comprises a supporting platform which comprises a first support, a second support and a third support; the two rotating shaft limiting assemblies are respectively fixed on the first bracket and the second bracket; two trunnions are arranged on the switching disc and are respectively embedded into the two rotating shaft limiting assemblies; the transfer hanging ring is fixedly connected with a front journal of the rotor; the limiting rotary supporting plate is fixedly arranged on the third bracket; and a front journal of the rotor is embedded into the limiting rotary supporting plate. The rotor turnover device can perform multi-degree-of-freedom turnover on the gas compressor rotor, one lifting point is reduced compared with a traditional turnover mode, the requirement for the operation ability of operators is weakened, the possibility of risk generation in the rotor turnover process is reduced, and reliable and safe multi-degree-of-freedom turnover work of the gas compressor rotor is achieved. And therefore, the overturning efficiency and safety are improved, and the stability of multi-degree-of-freedom and multi-angle overturning of the gas compressor rotor is improved.

The utility model provides an adjustable stator blade sealing device of an aero-engine, which is characterized in that an external shaft sleeve is arranged on a blade handle and rotates along with the blade handle; the internal shaft sleeve is mounted between the blade handle and the external shaft sleeve, the internal shaft sleeve is provided with a cavity, and a mounting shaft hole of the adjustable stator blade is matched with the cavity; a first sealing structure and a second sealing structure are arranged between the external shaft sleeve and the internal shaft sleeve, and the internal shaft sleeve and the external shaft sleeve are tightly sealed through cooperation of the first sealing structure and the second sealing structure. According to the utility model, a sealing mode of combining gas path sealing and labyrinth sealing is adopted, and the shaft sleeve at the blade handle and the bushing at the shaft hole of the casing are matched for sealing, so that the sealing performance of the gas compressor is improved, the water leakage problem at the VSV blade handle of the gas compressor is effectively reduced, the accuracy of T3 temperature change data is improved, and the reliability of a test result is enhanced.

The invention discloses a gas compressor test device and method, and belongs to the field of gas compressor tests.The gas compressor test device comprises a driver, and a driving shaft of the driver is used for being connected with a main shaft of a gas compressor; the unloading assembly comprises a balance drum, a high-pressure gas supply unit, an exhaust unit and an adjusting valve, the balance drum is used for being connected with a main shaft of the gas compressor and used for being connected with an impeller on the main shaft of the gas compressor, the high-pressure gas supply unit is used for being communicated between the balance drum and the impeller, and the exhaust unit is used for being communicated with the side, away from the impeller, of the balance drum; an inlet temperature sensor, an inlet pressure sensor and a flow sensor are arranged in the double-twisted-wire air inlet channel; an outlet temperature sensor and an outlet pressure sensor are arranged in the annular outlet throttler; and a controller. The technical effects of the invention lie in that the device not only facilitates the independent test of the related gas compressor, but also facilitates the small axial force of the impeller of the gas compressor borne by the thrust bearing.

The invention relates to a vehicle-mounted oxygen generation system, a molecular sieve device, an air conditioner assembly and a vehicle. And the gas compressor is connected with the target gas generation device so as to output gas to the target gas generation device. According to the technical scheme, the applicability of the vehicle in the plateau area is improved.

The invention discloses an anti-abrasion structure for a piston ring of a reciprocating gas compressor, belongs to the technical field of gas compressors, and aims to solve the technical problems that the piston ring of the existing reciprocating gas compressor is easy to abrade, uneven in lubrication, poor in air inlet filtering effect and insufficient in transmission stability. According to the technical scheme, the air compressor is characterized by comprising an air storage tank, a protective shell, a mounting sleeve, a sealing plate, a connector, a rotating circular plate, a driven shaft, a compression assembly, a driving assembly, an air inlet cylinder and a filtering assembly and further comprising an air inlet connector and a connecting pipe; an L-shaped plate and a piston plate are arranged on the side portion of the piston ring and matched with an oil groove and a permeation hole to achieve precise lubrication, the filtering assembly adopts a conical filtering net and a circular filtering cylinder to conduct double filtering and is convenient to disassemble, assemble and clean, the driving assembly is matched with a synchronizing wheel through a servo motor for transmission to guarantee stable operation, and compressed gas is fed into a gas storage tank through a gas inlet connector after being gathered through a connecting pipe.

The utility model discloses a pump core of an inflator pump. The pump core comprises a gas conveying mechanism and a gas compressing mechanism, the gas conveying mechanism is provided with a compression cavity; the gas compression mechanism comprises a pump box, a motor and a pump body assembly arranged in the pump box. The pump body assembly comprises a cam structure gear and a piston, and one end of the piston is eccentrically connected to the cam structure gear; a piston disc is arranged at the other end of the piston and is accommodated in the compression cavity; the motor drives the cam structure gear to drive the piston disc to do reciprocating rectilinear motion in the compression cavity, so that gas entering the compression cavity is compressed, and the gas conveying mechanism inflates a product to be inflated. According to the pump core of the inflator pump, the piston is eccentrically arranged on the gear of the cam structure, so that components in the pump box are simpler and more compact, and the size of the pump box is reduced.

The invention belongs to the technical field of ship sailing, and particularly relates to a structure and method for reducing ship sailing resistance. The structure comprises a ship body, a gas compressor is arranged at the bottom in the ship body, an output pipe of the gas compressor is connected with a gas pipe, a gas storage pipe is arranged on one side of the gas pipe, an electromagnetic valve assembly is arranged on the gas storage pipe, and a bubble generating structure is connected to one side of the electromagnetic valve assembly; the lower side of the electromagnetic valve assembly is connected with a bottom bubble structure, bionic layers are arranged on the outer side and the bottom of the ship body, and the bottom bubble structure communicates with the bionic layers. The bubble generation structure comprises a left bubble structure and a right bubble structure, the bubble generation structure and the bottom bubble structure cooperatively generate bubbles, in combination with the resistance reduction characteristic of the bionic layer, a bubble-bionic cooperative resistance reduction mechanism is formed, and the ship navigation resistance is effectively reduced.

This invention pertains to the field of hydrogen energy, specifically a high-carbon, low-hydrogen pressure swing adsorption (PSA) purification process system and method. The system, along the gas flow direction, sequentially includes a carbon-based conversion unit, a heat exchange-cooling-gas-liquid separation unit, a compressor, at least two switchable decarbonization and desulfurization towers, a fine desulfurization tower, a PSA unit, a desorbed gas buffer tank, a desorbed gas compressor, and a fuel gas tank. This invention increases the hydrogen fraction in the feed gas from 30-50% to 50-70% through carbon-based conversion, then removes total sulfur to ≤0.1ppm through multi-stage desulfurization and decarbonization, finally producing fuel cell-grade hydrogen with a purity of ≥99.97% via PSA. Simultaneously, the desorbed gas is pressurized, buffered, and then divided into two stages for reuse. This invention effectively improves hydrogen recovery rate and desorbed gas utilization rate, solving the problems of high energy consumption and adsorbent poisoning in the purification of high-carbon, low-hydrogen by-product gases. It is applicable to various feed gases such as coke oven gas, refinery gas, and methanol tail gas.

The application discloses an energy-saving air intake control method and air intake structure for a gas compressor and relates to the field of gas compressors. The device comprises an air intake shell, a conical shell arranged at the front end of the air intake shell, an air intake adjusting mechanism arranged in the air intake shell, the air intake adjusting mechanism comprising a front air intake block, an air intake adjusting column and adjusting front baffles, the front air intake block being fixedly connected to the front end of the conical shell, the air intake adjusting column being slidingly connected to the axis of the conical shell, the adjusting front baffles being rotatably connected to the front air intake block, the adjusting front baffles being arrayed on the adjusting front baffles, and rubber baffles being fixedly connected between each group of adjusting front baffles. The device drives two groups of input adjusting ports by arranging a group of motors, so that the air flow of the air inlet can pass through the air duct formed by the two groups of air inlets, which not only makes the control simpler, but also makes the air inlet in the passage not increase the power consumption due to the friction between the valve plate and the air flow caused by adjustment.

The invention discloses an electrically driven supercharger structure, and relates to the technical field of electrically driven superchargers, and the structure comprises a driving motor which comprises a motor housing, a stator coil and a rotor, the stator coil is fixed in the motor housing, and the rotor is located in the internal space of the stator coil; the gas compressor comprises a pressure shell and a pressure impeller; the bearing system comprises a main body structure, a rotating shaft, a bearing and a thrust sleeve, the motor shell is connected with the pressing shell through the main body structure, a rotating shaft mounting channel is formed in the main body structure, the rotating shaft is arranged in the rotating shaft mounting channel through the bearing, one end of the rotating shaft is connected with the rotor, and the other end of the rotating shaft is connected with the pressing impeller; the thrust sleeve is located between the bearing and the pressure impeller and arranged on the rotating shaft in a sleeving mode. The driving motor and the gas compressor are connected through the bearing system, so that the rotor and the compressor impeller are respectively connected through the two ends of the rotating shaft, the structural complexity of the electrically-driven supercharger is reduced under the condition that power is provided for the supercharger in an electrically-driven mode, and the structural space is greatly compressed.

The utility model discloses a low-calorific-value fuel gas calorific value adjusting device for stabilizing combustion of a hydrogen conversion furnace, which comprises a high-calorific-value analytic gas buffer tank and a controller, and the high-calorific-value analytic gas buffer tank is connected with a high-calorific-value analytic gas compressor through a gas pipeline. The high-calorific-value desorption gas compressor is connected with a low-calorific-value fuel gas pipeline through a high-pressure pipeline, an electric control valve controlled by a controller is arranged on the high-pressure pipeline, a gas analyzer controlled by the controller is arranged on the low-calorific-value fuel gas pipeline, and a mixing buffer tank is arranged at the tail end of the low-calorific-value fuel gas pipeline. According to the utility model, the mode that high-calorific-value analysis gas is supplied to low-calorific-value fuel gas is adopted, the low-calorific-value fuel gas pipeline is connected with the high-pressure pipeline, the high-calorific-value analysis gas is supplied to the low-calorific-value fuel gas conveying pipeline according to the detection of the gas analyzer and the adjustment requirements of the calorific value, and then the high-calorific-value analysis gas is mixed through the mixing buffer tank; and the adjusted low-calorific-value fuel gas is conveyed to the hydrogen production reformer, so that the hydrogen production reformer can stably burn.

A steam generation system, comprising a first heat exchanger to discharge steam having a first pressure, a gas compressor discharge steam at a second pressure, the gas compressor including a first impeller made of a first material, a second impeller made of a second material, and a shaft, an auxiliary heater to receive steam at a first temperature and discharge the steam at a second temperature, an industrial processing plant to receive the steam at the second temperature and discharge a fluid, a pump to receive and discharge a the fluid, and a second heat exchanger to receive the fluid at a temperature and discharge the fluid at a higher temperature to the first heat exchanger.

A device for CO2 microbubble flooding comprises a microbubble generating device, a stirring and liquid storage device, an injection pump, a gas compressor, a gas-liquid mixer and a pressure stabilizing system, wherein the microbubble generating device adopts an integrally formed multi-layer cylindrical metal powder-sintered porous plate, and the diameters of microchannels on the porous plate are sequentially reduced from inside to outside. A solution containing additives in the storage device is stirred uniformly and then enters into a downhole gas injection base pipe through the gas-liquid mixer to be injected into a stratum, then a carbon dioxide gas compressed by the gas compressor is pumped into the downhole gas injection base pipe through the gas injection pump, and the gas generates microbubbles in situ when passing through the multi-layer porous device under the action of pressure difference.

Invention relates to a hydraulic compressor system for compressing gas, comprising: at least one pump for pumping liquid; a gas reservoir for storing compressed gas; at least two compression tanks, each of said compression tanks comprises an expandable bladder defining a bladder cavity, wherein the expandable bladder contains a liquid in the expandable bladder cavity and the expandable bladder is configured to expand when liquid is input into the expandable bladder cavity and a tank cavity outside of the expandable bladder, wherein the cavity comprises a compressible gas wherein the expandable bladder and the tank cavity outside the expandable bladder form interdependent volumes of liquid and gas; a liquid line configured to fluidly couple the expandable bladder cavity with at least one of the one or more pumps such that the liquid is pumped into or out of the expandable bladder via the liquid line; a gas line configured to fluidly couple the gas reservoir with the tank cavity such that the gas flows into or out of the tank cavity via the gas line; wherein, during operation of the system, liquid is pumped by the one or more pumps to the expandable bladder in the first compression tank and gas is expelled from the tank cavity of the first compression tank and directed to gas reservoir where it is compressed, characterised in that Switching from compressing the first compression tank (21) to compressing the second compression tank (22); is achieved by changing the direction of flow; wherein the pump (10) direction of rotation is reversed to reverse the flow of liquid; wherein said pump (10) comprises a variable speed pump wherein the speed of said pump (10) is adjusted so that towards the end of the compression stroke the pump speed is reduced and hence the liquid flowrate is reduced to allow a smooth change-over from one compression tank to another compression tank as the automatically controlled switch over is executed or the speed of said pump is adjusted so that the maximum efficiency of the compression cycle is maintained thought continuous speed adjustment of the pump.

The present application relates to systems and methods for utilizing the Bland / Ewing cycle as a thermochemical gas compressor. In some examples, it can be useful to view the Bland / Ewing Cycle as including two thermodynamic half cycles, which include an endothermic half cycle and an exothermic half cycle, as discussed herein.

The invention discloses a four-step-in-one negative pressure oil-carrying shutdown method for a styrene dehydrogenation reaction system, and relates to the technical field of styrene dehydrogenation. A negative-pressure steam oil-carrying mode is adopted for the first time, after feeding of the dehydrogenation reaction system is cut off, operation of a tail gas compressor is still maintained, the normal negative-pressure working condition of the reaction system is maintained, and steam oil-carrying under the negative-pressure working condition is carried out; after oil carrying is finished, the tail gas compressor still keeps running, the pressure is gradually increased to micro-positive pressure, and catalyst scorching is conducted; and after scorching is finished, the tail gas compressor is still maintained to operate in the steam cooling and nitrogen cooling processes until nitrogen cooling is finished, the tail gas compressor is stopped, and meanwhile multiple times of starting and stopping of the tail gas compressor are optimized into one-time stopping operation in the stages of steam oil carrying, catalyst scorching, steam cooling and nitrogen circulating cooling. One-time shutdown operation of the tail gas compressor is achieved through negative pressure shutdown, the shutdown operation step sequence of the reaction system is greatly simplified, and the shutdown disposal difficulty of the dehydrogenation reaction system is reduced.

The utility model discloses a quick disassembly and assembly type gas compressor connecting rod connecting mechanism, including device body, the device body contains connecting rod, connecting rod front end connection piston ring and connecting rod rear end connection connecting rod upper shoe, be equipped with piston pin in the piston ring, one end of connecting rod upper shoe is equipped with connecting rod lower shoe, be equipped with inserting hole no.

The utility model relates to the technical field of chemical equipment, and discloses a disilane preparation device, which comprises a mounting plate, the supporting block is arranged on the mounting plate; the clamping sleeve is fixedly arranged above the supporting block; the reaction kettle is fixedly arranged in the jacket; the feeding hole is formed in the reaction kettle, and a feeding pipe is fixedly arranged in the feeding hole; the outlet is formed in the reaction kettle and is formed in one side of the feeding hole, and a discharging pipe is fixedly connected to the outlet; the gas inlet hole is formed in the reaction kettle, and the output end of a gas compressor is fixedly connected to the interior of the gas inlet hole; the stirring mechanism is arranged in the reaction kettle; the slag discharge pipe is communicated with the jacket and the reaction kettle, and the slag discharge pipe is arranged at the bottom of the reaction kettle; the rectifying tower is communicated with the discharging pipe, the top of the rectifying tower is connected with a condenser, the bottom of the rectifying tower is connected with a reboiler, and the rectifying tower is communicated with a storage tank. The disilane preparation device disclosed by the utility model is used for solving the problems of the existing equipment.

The invention provides a wheel flange sealing structure of a gas compressor end of a gas turbine, the gas compressor end comprises a static impeller and a movable impeller which are alternately arranged, the static impeller and the movable impeller are in sealing fit through a wheel flange sealing structure, and a second wheel flange matching part on the movable impeller is provided with a sealing blade. The sealing blade is provided with a suction surface and a pressure surface which are arranged back to back, the suction surface is an outer convex cambered surface, and the pressure surface is an inner concave cambered surface; the pressure surface is arranged towards the high-pressure area, and the sealing blade forms a pressure difference between the suction surface and the pressure surface along with the rotation of the compressor impeller, so that an acting force opposite to a high-pressure leakage flow of the high-pressure area is obtained; leakage of high-pressure leakage flow is efficiently prevented.

The invention relates to the technical field of compressor impeller machining, in particular to an efficient impeller linkage roughing and milling method which comprises the following steps: dividing a group of cavities of a compressor impeller into an A-BR region, an A-BS region and an AS-BR region; the A-BR area is milled according to the preset first milling depth of the A-BR area; the AS-BR area is milled according to the preset first milling depth of the AS-BR area; the A-BS area is milled according to the preset first milling depth of the A-BS area; then, complete milling is conducted on the remaining depth of the A-BR area, and complete milling is conducted on the remaining depth of the AS-BR area; then, the A-BS area is milled according to the preset A-BS area second milling depth, and finally, the A-BS area with the remaining depth is completely milled; according to the milling method, the milling efficiency of the compressor impeller is improved.

This invention discloses a buffer separation device for a gas compressor, belonging to the technical field of separation devices. The device includes a separation tank, a centrifugal assembly, and a recovery assembly. This solution utilizes baffles to stabilize and redirect the centrifuged gas flow, achieving inertial sedimentation of medium-sized droplets. The gas flow, which may contain sputtered liquid mist, is then collected and treated. At the sharp bend in the recovery pipe, tiny droplets generated by sputtering impact the outer wall of the bend due to inertia and are firmly adsorbed and locked by adsorption strips, thus achieving final collection of secondary contaminants and ensuring extremely high dryness of the outlet gas. Simultaneously, the adsorbed liquid can be automatically heated and evaporated and discharged during shutdown, restoring the gas to its original condition. The water-absorbing ring for collecting fluid from the wall is equipped with a squeezing assembly driven by a wave-shaped abutment groove, enabling periodic squeezing and dehydration, fundamentally consolidating the long-term effectiveness in solving the secondary entrainment problem and ensuring consistently stable separation performance.

The invention relates to a method for producing a material powder, comprising: providing a material (5) to an atomization device (3) and an atomization gas (6) loaded with an atomization gas pressure by means of an atomization gas compressor (2); melting the material (5) and atomizing the melted material (5) into a material powder by means of the atomization device (3) by loading the melted material (5) with the atomization gas (6); introducing the material powder from the atomization device (3) into a pressure vessel (4); and providing the pressure vessel (4) with a transport gas (7) loaded with a transport gas pressure by means of a transport gas compressor (1), wherein the transport gas pressure lies above atmospheric pressure and below the atomization gas pressure. The invention also relates to an apparatus for carrying out the method.

The utility model provides a recycling system for emptying gas in a pulverized coal preparation process. The recycling system comprises a gas washer, a gas cooler, a gas-liquid separation tank, a gas compressor and a gas pressure reducing valve, a gas inlet of the gas scrubber is used for being connected with an emptying gas outlet of a pulverized coal preparation unit, a liquid inlet of the gas scrubber is connected into a scrubbing water pipeline, a gas outlet of the gas scrubber is communicated with a gas inlet of the gas cooler, and a gas outlet of the gas cooler is communicated with an inlet of the gas-liquid separation tank. A gas outlet of the gas-liquid separation tank is communicated with an inlet of the gas compressor, an outlet of the gas compressor is communicated with one end of the gas pressure reducing valve, and the other end of the gas pressure reducing valve is connected with a sealing fan inlet of the pulverized coal preparation unit. According to the utility model, not only is the resource utilization efficiency improved, but also the influence on the environment is reduced.

The invention discloses an oil and gas well bottom electric high-speed booster pump permanent magnet bearing flexible combined support, which is applied to an electric high-speed booster pump for gas production of a natural gas well, adopts a non-contact checkerboard type permanent magnet dot matrix design, and takes the magnetic force action as positioning constraint. Comprising a radial magnetic suspension bearing unit, an axial magnetic suspension bearing unit and a flexible supporting unit. The radial magnetic levitation unit is composed of two sets of prestress dot-matrix type permanent magnet rings including an inner magnetic ring and an outer magnetic ring, and radial centering of the rotor shaft is achieved through reasonable distribution and combination of magnetic repulsive force and suction force. The axial magnetic levitation unit is composed of two sets of prestressed dot-matrix permanent magnet bearings and resists axial thrust generated by a gas compressor in a non-contact mode. The auxiliary supporting unit comprises a positioning bearing and a flexible floating point type supporting sleeve, centering and damping are provided during starting, stopping and low-speed operation, radial fluctuation can be effectively reduced, and stable starting and stable impeller tooth top clearance are ensured. And stable and reliable support of the motor in the whole stage from starting to high-speed operation is realized.

A method for controlling flow in a Natural Gas Liquids (NGL) extraction system includes determining an operational characteristic of one or more residue gas compressors operating within the NGL extraction system and calculating a rate of closure for one or more throttle valves associated with the one or more residue gas compressors based on the operational characteristic determined. When a process upset in the NGL extraction system is detected, the one or more throttle valves are closed at the calculated rate of closure in response to detecting the process upset.