25 results about "Compressor station" patented technology

The invention discloses a compressor unit of a compressor station, a control method of the compressor unit, a medium and a program product, relates to the technical field of compressors, and aims to solve the problem of resource waste during test dragging of the compressor unit of the compressor station. The compressor unit of the compressor station comprises a compressor; an inlet valve; an outlet valve; one end of the inlet bypass pipeline is connected to one side of the inlet valve, and the other end of the inlet bypass pipeline is connected to the other side of the inlet valve; an inlet bypass valve is arranged on the inlet bypass pipeline; after the purging operation included in the warm-up mode is executed, the inlet bypass valve is controlled to be opened, the inlet valve is controlled to be closed, and the outlet valve is controlled to be closed, so that the compression pipeline is inflated through the inlet bypass valve; the compression pipeline is a pipeline between the inlet valve and the outlet valve; under the condition that the pressure of the compression pipeline reaches a first set pressure value, the warm-up operation included in the warm-up mode is executed; the first set pressure value is lower than a second set pressure value corresponding to the compression pipeline in the starting mode.

The present invention relates to the field of system simulation, and more specifically, to a compressor station operator training system and data interaction method thereof. The system comprises a compressor station simulation model, a compressor station control system model, and a method for data interaction between the simulation model and the control system model. The control system model is the main body of the control logic. This compressor station operator training system can provide advance understanding of the compressor station's operating characteristics, perform control system pre-verification, debug compressor unit start-up and shutdown logic, identify the optimal operating point and optimal operation method for the compressor unit cascade, and provide operator training.

The invention provides a natural gas pipeline network scheduling optimization method considering flow distribution and carbon emission, and the method comprises the steps: obtaining basic data of a target natural gas pipeline network, and constructing a constraint condition and a target function of a natural gas pipeline network scheduling optimization model considering flow distribution and carbon emission; and solving the natural gas pipeline network scheduling optimization mathematical model considering flow distribution and carbon emission, and generating a pipeline network flow distribution scheme and a compressor station operation scheme. On the basis of pipeline hydraulic characteristics of the natural gas pipeline network and pressurization characteristics of the compressor station, pipeline path flow distribution and compressor station carbon emission control are combined, a natural gas pipeline network scheduling optimization method is provided, a pipeline network flow distribution scheme and a compressor station operation scheme are reasonably decided, and on the premise that the natural gas flow requirement of a user is met, the user experience is improved. The operation cost of a multi-path complex natural gas pipe network system can be greatly reduced, and the economic and environmental benefits in the natural gas conveying process are improved.

The present invention provides a vortex-enhanced ejector pump and its usage method, which includes an ejector pump body and a controller; the ejector pump body includes a suction chamber, a spiral guide vane, a vortex mixing chamber and a diffuser section. The suction chamber, the vortex mixing chamber and the diffuser section are fixedly connected in sequence. A nozzle is arranged in the suction chamber, and a high-pressure primary flow fluid is sprayed into the vortex mixing chamber through the nozzle. The low-pressure secondary flow fluid is sucked into the vortex mixing chamber through the suction chamber. A spiral guide vane is arranged in the vortex mixing chamber, and the spiral guide vane is used to enhance the vortex effect of the fluid in the vortex mixing chamber, promote the mixing and energy exchange of the primary flow fluid and the secondary flow fluid, and the diffuser section is used to diffuse the mixed fluid. The present invention improves the fluid boosting efficiency and energy utilization rate of the ejector pump. In practical applications such as long-distance pipeline compressor stations and natural gas purification, it can significantly improve the fluid boosting efficiency, reduce energy loss, and adapt to complex variable working condition requirements.

The present invention provides a method for evaluating the gas supply reliability of a natural gas pipeline network based on a pipeline network degradation model, belonging to the technical field of evaluating the gas supply reliability of a natural gas pipeline network; the technical problem to be solved is: to provide a method for evaluating the gas supply reliability of a natural gas pipeline network based on a pipeline network degradation model; the technical solution adopted to solve this technical problem is: considering the specific influence of the degradation of compressor stations and the random degradation of pipelines on the natural gas pipeline network system, and according to the different influence laws of the gas supply volume of the natural gas pipeline network system by the degradation of the two, respectively model the degradation process of compressor stations and the random degradation process of pipelines; analyze and calculate the probabilities of various operating states of the pipeline network, and based on the maximum gas supply volume of the pipeline network affected by the degradation of the pipeline and the compressor station, evaluate the supply-demand relationship of the pipeline network in various states, so as to evaluate the gas supply reliability of the pipeline network; the present invention is applied to the evaluation of the gas supply reliability of a natural gas pipeline network.

The invention relates to a computer-implemented method for controlling and / or regulating a single compressor station having a compressor (C1), wherein a detected actual pressure is to be maintained in a pressure fluid system by means of the single compressor station within a pressure range between an upper pressure limit and a lower pressure limit. A tree structure is generated having nodes (5 to 10) in the form of simulated system states that produce self-simulated load instructions, different load instructions and the system states that produce self-load instructions being simulated starting from the selected system states at the point in time ti for the next point in time ti + 1 (i = 1... n-1), the invalid system states being deleted, and the selected system states being selected from the selected system states at the point in time ti. A system state pressure class is assigned to the respective actual pressure, an expected control state of the compressor is determined at a point in time t + 1 and a control state class is assigned to the expected control state, and the system state with the lowest cost value is selected for each system state. Wherein the load command with the lowest cost value is selected from all the nodes (5 to 10) selected at the point in time tn, and wherein a control command saved for the control command at the point in time t1 is transmitted to the compressor (C1).

The present invention provides a daily specified gas transmission optimization method for natural gas pipelines considering user characteristics. The method includes: generating the constraint conditions of the model based on the structural parameters of the natural gas pipeline network, user demand parameters, and compressor station parameters; generating a gas transmission optimization model for the natural gas pipeline network considering user characteristics according to the constraint conditions and the objective function of minimizing compressor energy consumption; and solving the gas transmission optimization model for the natural gas pipeline network considering user characteristics to output the gas transmission optimization scheme for the natural gas pipeline network. This method can select appropriate gas transmission modes for different types of natural gas users, improve the gas supply accuracy of users and the operation efficiency of the natural gas pipeline network caused by differences in user gas consumption characteristics. At the same time, it reduces the energy consumption of compressor stations during the operation of the pipeline network, and has guiding significance for the daily scheduling management and overall operation of pipeline network companies.

This invention provides a unit restoration method and system that considers the bidirectional coupling characteristics of power transmission networks and gas transmission networks, belonging to the field of power system safety and stability technology. The method involves determining the objective function for restoring the system's power generation capacity; constructing restoration constraints for the power transmission network; constructing constraints for the gas transmission network; constructing coupling constraints for three types of coupled equipment: gas turbine units, electric-driven compressor stations, and electric-driven gas sources; combining the objective function with the constructed constraints of the power transmission network, gas transmission network, and the three types of coupled equipment, establishing a mixed-integer linear programming model; solving the mixed-integer linear programming model to obtain the restoration strategy for the power transmission network at various time periods. This invention addresses the highly coupled power transmission and gas transmission networks by modeling the unit restoration problem considering the bidirectional coupling effect of the two networks as a mixed-integer linear programming model, solving the model to obtain the unit restoration strategy, and rapidly restoring the system's power generation capacity.

The application discloses a semi-hardware dynamic simulation method and simulation platform of a compressor station, which is applied to the field of system simulation and comprises the following steps: a simulation model of the compressor station is established, the simulation model is compiled and run, and the simulation model is packaged into an fmu file; based on an NI simulation machine, the fmu file is deployed according to third-party software to generate a standard electric signal; the standard electric signal is input and output through an NI hardware board card of the NI simulation machine; a control system model of the compressor station is established, the control system model acquires the standard electric signal through an actual PLC control system; the control system model sends a command control and monitors the simulation model through a man-machine interface; and based on the NI simulation machine as an intermediate medium, the simulation model is run under a Windows system or a Linux system to realize data interaction between the simulation model and the control system model.

A kind of surplus energy power generation system for natural gas distribution pressurizing station, system includes: natural gas compression subsystem for providing compressed natural gas, its inlet is the natural gas inlet of system, i.e. upstream natural gas, its outlet is compressed high pressure natural gas, continue to be transported to remote city;Natural gas expansion subsystem for providing medium pressure natural gas and low pressure natural gas, its inlet is the natural gas inlet of system, i.e. upstream natural gas, its outlet is expanded medium pressure natural gas and low pressure natural gas, respectively transported to peripheral remote and peripheral close city;Organic rankine cycle subsystem, with the hot gas stream of the compressed natural gas output as heat inlet, carries out power generation.The present application can provide pressure suitable natural gas for close, medium, remote three places respectively, and effectively utilize the waste heat when natural gas distribution pressurizes, improve system energy utilization rate, make the whole system energy maximization utilization, reduce the consumption of fossil fuel and greenhouse gas, pollution gas emission.

This utility model discloses a horizontally movable compression station, including a main structure and a garbage bin. A groove is recessed on one side of the main structure, and a compression mechanism is installed at one end of the groove. A vertically penetrating unloading trough is provided on the top wall of the other end of the groove. A sewage pipe is fixedly installed on the main structure below the groove. A window is provided on one side of the garbage bin, opposite the groove. A sealing door capable of concealing the window is slidably installed on the outer wall of the garbage bin. A drainage groove is formed on the inner bottom wall of the garbage bin, and a water collection hopper is fixedly installed on the bottom of the garbage bin around the drainage groove. The water collection hopper is connected to the sewage pipe through a drain pipe. The garbage bin is connected to the main structure through a locking mechanism. With the above configuration, wastewater generated during garbage compression can be discharged from the garbage bin in a timely manner, preventing wastewater accumulation inside the garbage bin.

The invention discloses a natural gas pipeline network operation optimization method considering neural network-mechanism fusion, and aims to solve the problem that precision and solving efficiency are difficult to consider when a natural gas pipeline network is optimized by a traditional pure physical mechanism model. The method comprises the following steps: firstly, collecting and preprocessing data such as a pipe network structure and an equipment operation state, constructing and training a compressor rotating speed, power, surge boundary and stagnation boundary agent model, and reconstructing into a mixed integer linear programming constraint; a flow direction auxiliary variable is introduced to convert a hydraulic constraint into a convex relaxation constraint, constraints such as node flow balance and compressor station load distribution are combined, an optimization model with minimization of total energy consumption and carbon emission of a compressor as a target is constructed, and a heuristic enhanced branch cutting algorithm is adopted for solving. According to the method, the balance between the model precision and the solving efficiency is realized through neural network-mechanism fusion, the optimized operation scheme of the pipe network can be output, and scientific decision support is provided for economic, low-carbon and safe operation of the natural gas pipe network.

This utility model discloses a support and limiting structure for a compressor station, installed on a steel frame. A compressor head body is mounted on the steel frame, including a limiting hook, a limiting assembly, and a driving assembly. A connecting rod is fixedly connected to the top of the limiting hook, and the top of the limiting hook is rotatably connected to the inner wall of the steel frame. The limiting assembly includes a sleeve, a movable rod, and a limiting pin. First supports are fixedly arranged at intervals on the inner wall of the steel frame, with fixed shafts on one side of the two first supports close to each other. The sleeve is rotatably fitted onto the two fixed shafts. The movable rod slides through the sleeve, and its bottom is rotatably connected to the top of the connecting rod. A limiting hole is opened on the side wall of the movable rod, and the limiting pin slides through one of the first supports. The driving assembly is located on the inner wall of the steel frame. Through this arrangement, the lower section of the limiting hook can be kept below the compressor head body, providing support for the compressor head body in case of hydraulic system failure, thus improving the safety of the device.

The invention relates to an electrolysis system (1), comprising: a plurality of electrolysis devices (3, 3A, 3B, 3C), each having an electrolysis device with a respective product gas line (5, 5A, 5B, 5C) through which a product gas can be discharged from the electrolysis devices (3, 3A, 3B, 3C); and a compressor arrangement (7) comprising a pre-compression device (9) with a plurality of pre-compressors (11, 11A, 11B), a post-compressor station (13) and a central collection line (15), in which the product gas lines (5, 5A, 5B, 5C) are connected to the input side of the pre-compressors (11, 11A, 11B) and the pre-compressors (11, 11A, 11B) are connected on the output side to the central collection line (15), and in which the post-compressor station (13) is connected to the central collection line (15).

The invention discloses a response surface method-based pipe network compressor station merging and simplified operation optimization method, which comprises the following steps of: constructing a global pipe network topological structure, and identifying mergeable local pipe sections of multiple compressor stations; collecting basic operation data of a pipe network, and determining an operation condition range of a local pipe section; the method comprises the following steps: carrying out preliminary simplification merging treatment on mergeable local pipe sections of multiple compressor stations, and constructing a multi-working-condition optimal operation scheme set and a response model of the local pipe sections by adopting a response surface experimental design and analysis method; the global pipe network topological structure and the optimization model are combined and simplified, and an optimal operation scheme of the global pipe network is solved; adopting an approximate working condition selection method to select the optimal operation scheme of the local pipe section under the current working condition; and quickly solving an optimal operation scheme according to the latest operation condition. According to the method, the optimization solving efficiency of pipe network operation can be effectively improved, the operation condition range is fully covered by combining response surface experiment design and analysis methods, and rapid and reliable decision support is provided for real-time operation scheduling of the pipe network.

Herein pipeline pressure, temperature and NGL constituents are manipulated for the transportation and optional storage in a pipeline system of natural gas mixtures or rich mixtures for delivery of chilled Products for downstream applications. Pressure reduction from a last compression section delivers internally chilled Products for reduced capital and operating costs. A high lift compressor station before the pipeline terminus provides pressure differential for Joule-Thompson chilling of the pipeline contents. The chilling step can be retrofitted to existing pipeline systems, and the chilling steep can include a turbo expander or the like for recovery of pipeline pressure energy for power generation. For like throughout, with this higher pressure operation, the effects of enhanced NGL content results in a reduction in diameter of the pipeline by at least one standard size. Substantial overall reduction in energy consumption and associated CO2 emissions is thereby achieved through integrated pipeline / processing applications.

The application discloses an intelligent complex natural gas pipeline network pipeline application verification method under an open transportation mode, which comprises the following steps: obtaining pipeline network and pipeline application basic data, and establishing a topological structure; introducing node, pipeline and booster station physical characteristics and boundary constraints, and constructing a pipeline application verification non-convex MINLP model; solving the model by using a two-stage algorithm, judging the application technical feasibility according to the model, and outputting a scheduling scheme or an infeasible explanation. The application comprehensively considers factors such as pipeline hydrodynamics, compressor station discrete state switching and non-convex feasible region boundary, innovatively proposes a two-stage solving algorithm, combines one-dimensional nonlinear function piecewise linear approximation, high-dimensional nonlinear function space grid approximation and compressor non-convex feasible region convex relaxation technology, effectively solves large-scale non-convex mixed integer problem solving difficulties and low calculation efficiency and other problems, and provides theoretical support for intelligent operation scheduling under the open transportation mode of the natural gas pipeline network.

The invention provides an air compressor load distribution method and device, computer equipment and a storage medium, and belongs to the field of equipment control. The method comprises the steps that physical property parameters of compressed gas in multiple parallel air compressors are obtained; establishing a load distribution model by taking the load distribution proportion of each compressor as a decision variable and minimizing the total energy consumption of the compressor station as a target function and combining the equipment characteristics of the compressors and the gas physical property parameters, and setting outlet pressure constraint and outlet temperature constraint; performing iterative optimization solution on the load distribution model by adopting a dogvessel colony algorithm to generate an optimal load distribution scheme meeting the outlet pressure constraint and the outlet temperature constraint; and according to the optimal load distribution scheme, dynamically distributing the operation load of the plurality of parallel air compressors. According to the method, efficiency attenuation caused by long-term overload operation of a single device is avoided, the overall energy efficiency of the system is improved through collaborative optimization, and dual benefits of energy efficiency optimization and device service life prolonging are achieved.

A process to remove heat from a cooling medium and replenish a frac water retention pond, such process comprising the following steps: a. exposing a hot exhaust gas stream to a chamber cooled by said cooling medium in a condensing portion of a carbon capture unit; b. condensing at least a portion of said hot exhaust gas stream in said condensing portion of the carbon capture unit to allow the condensation and removal of the water vapour from the exhaust gas, thereby generating a water stream, said water stream exiting the carbon capture unit at an outlet thereof; and c. discharging said water stream into said frac water retention pond.

This invention discloses a spray cooling and intelligent control method for a natural gas compressor post-air cooler, relating to the field of natural gas boosting and transportation technology. The method includes the following steps: collecting structural and physical property parameters, air thermodynamic parameters, and natural gas thermodynamic parameters of the post-air cooler finned tube bundle; calculating the heat release of natural gas within the finned tube bundle; calculating the required spray water volume to reach the required temperature for external natural gas transmission; determining the optimal spray equipment installation scheme by comprehensively considering the internal space location of the post-air cooler, nozzle atomization effect and droplet diameter, energy saving and consumption reduction, and economic factors; dynamically adjusting the spray volume and start / stop conditions of the spray cooling system according to the processing capacity of the post-air cooler and the dynamic changes in the ambient temperature; and realizing intelligent control of the natural gas outlet temperature of the post-air cooler finned tube bundle based on the functions and control process of the temperature control system. This ensures the safe, stable, and efficient operation of large-scale compressor stations and achieves energy saving and consumption reduction.

The invention provides an energy scheduling optimization method, device and equipment for a natural gas network, and belongs to the field of energy scheduling. Comprising the following steps: respectively acquiring operation capability information, natural gas supply and demand information and power supply and demand information of an LNG receiving station, a P2G facility and a gas compression station in a plurality of preset periods; obtaining design parameters of the natural gas pipeline network; at least one objective function and at least one constraint condition are generated according to the operation capability information, the natural gas supply and demand information, the power supply and demand information and / or design parameters of the natural gas pipeline network, the objective function is used for indicating an energy scheduling optimization demand, and the constraint condition is used for indicating a constraint relation between energy sources and feasibility of natural gas network operation; constructing an optimization model according to the at least one objective function and the at least one constraint condition; and solving the optimization model to obtain an energy scheduling strategy of the natural gas network. The satisfaction degree of downstream users can be improved, energy is saved, carbon is reduced, and the energy utilization rate is increased.

A process to remove heat from a cooling medium and replenish a frac water retention pond, such process comprising the following steps: a. exposing a hot exhaust gas stream to a chamber cooled by said cooling medium in a condensing portion of a carbon capture unit; b. condensing at least a portion of said hot exhaust gas stream in said condensing portion of the carbon capture unit to allow the condensation and removal of the water vapour from the exhaust gas, thereby generating a water stream, said water stream exiting the carbon capture unit at an outlet thereof; and c. discharging said water stream into said frac water retention pond.

The present invention discloses a simplified operation optimization method for merging compressor stations in a pipeline network based on a response surface method, comprising the following steps: constructing a global pipeline network topology structure and identifying local pipe sections that can be merged with multiple compressor stations; collecting basic pipeline network operation data and determining the operating condition range of the local pipe sections; performing preliminary simplified merging processing on the local pipe sections that can be merged with multiple compressor stations, and adopting a response surface experimental design and analysis method to construct a set of optimal operating solutions for multiple operating conditions and a response model for the local pipe sections; performing merging and simplifying processing on the global pipeline network topology structure and the optimization model to solve the optimal operating solution for the global pipeline network; adopting an approximate operating condition selection method to select the optimal operating solution for the local pipe section under the current operating condition; and quickly solving the optimal operating solution based on the latest operating condition. The present invention can effectively improve the efficiency of pipeline network operation optimization solution, and by combining the response surface experimental design and analysis method to fully cover the operating condition range, it provides fast and reliable decision support for the real-time operation scheduling of the pipeline network.

The utility model discloses a medical membrane separation oxygenerator, which relates to the technical field of medical oxygen production and comprises an oil-free compressor station, a compressed air pipeline is arranged at an air outlet of the oil-free compressor station, and an oxygen separation mechanism is arranged at the other end of the compressed air pipeline. The end, away from the compressed air pipeline, of the oxygen separation mechanism is fixedly connected with an oxygen conveying pipe, and the other end of the oxygen conveying pipe is connected with an oxygen storage tank. The oxygen separating mechanism comprises oxygen separating membranes which are arranged in an annular array mode, the two ends of each oxygen separating membrane are provided with a flow dividing box and a hollow gas collecting base respectively, and the top of each flow dividing box is fixedly connected with a sealing cover; the oxygen separation membranes arranged in the annular array mode are communicated through the flow dividing box and the hollow gas collecting base, the multiple oxygen separation membranes work at the same time, the oxygen generation efficiency is improved, the valves are arranged at the two ends of each oxygen separation membrane, and the single oxygen separation membrane can be conveniently detached and replaced under the non-stop condition.

One process of the invention includes removing heat from a cooling medium and replenishing a frac water retention pond. The process includes exposing a hot exhaust gas stream to a chamber cooled by the cooling medium in a condensing portion of a carbon capture unit, condensing at least a portion of the hot exhaust gas stream in the condensing portion of the carbon capture unit to allow the condensation and removal of water vapour from the exhaust gas, thereby generating a water stream, wherein a water stream exits the carbon capture unit at an outlet thereof and the water stream move to the frac water retention pond. Another process includes using water to lower a temperature of a cooling medium in a hydraulic fracturing process step. Another process includes using condensed water from a post-combustion carbon capture unit to replenish a frac water source.