71 results about "Retrofitting" patented technology

A first measuring device (160) is retrofitted at a predetermined position in a machine room of an elevator (100) or a hoistway (HW), and measures air pressure at the predetermined position. A second measuring device (170) is retrofitted to the outside of a car (102) that moves inside the hoistway (HW), and measures air pressure at the position of the car (102). The status of the car (102) in the hoistway (HW) (such as the position of the car and whether the car is moving or stopped) is determined on the basis of a difference between a first air pressure value measured by the first measuring device (160) and a second air pressure value measured by the second measuring device (170), or the amount of variation of the difference. This allows easy retrofitting and makes it possible to reliably determine the status of the car without obtaining information from a control panel.

This application relates to the field of liquefied natural gas (LNG) storage and transportation, and more particularly to a method for modifying LNG carriers. The method includes: removing a first cover plate from the cargo hold and removing the spherical cargo tank and supporting components from the cargo hold; modifying the cargo hold walls to obtain the target cargo hold, and installing a second cover plate adapted to the membrane cargo tank on top of the target cargo hold; obtaining the spatial contour of the decahedron space, and laying wedges and adhesive materials on the cargo hold walls according to the spatial contour to form an installation plane for installing a membrane containment system on the cargo hold walls; laying the membrane containment system on the installation plane to obtain a membrane-type cargo tank, thus completing the modification of the LNG carrier's cargo tank. The method provided in this application can reduce the cost of obtaining membrane-type LNG carriers.

The utility model belongs to the technical field of pipeline backfilling, and discloses a hydraulic flat plate vibration compaction device for pipeline backfilling modification, which comprises a bottom plate, a replacement structure, a hydraulic motor, a lower connecting seat, a fixing frame and a dustproof structure, the replacement structure is arranged at the bottom end of the bottom plate, the hydraulic motor is arranged at the top end of the bottom plate, and the lower connecting seat is arranged on the replacement structure. A hydraulic motor is installed on the bottom plate, an eccentric wheel box is installed on one side of the hydraulic motor, the other side of the hydraulic motor is connected with an oil pressure pipeline, lower connecting bases are fixed to the two sides of the top end of the bottom plate, and shock absorption dampers are installed at the top ends of the lower connecting bases. The problems that flying dust is generated, the air quality is reduced, the air becomes turbid, meanwhile, the urban environment becomes dirty, messy and bad, and the overall image of a city and the living quality of residents are affected due to the fact that the device needs to strike the earth surface soil for a long time are solved.

A building control system for at least one building. The building control system has a system controller and at least one building operation device with a respective operation controller. Electrical supply power is fed from a supply grid to the at least one building operation device. The system controller is set up to temporarily adapt a setpoint value for each building operation parameter in order to adapt the electrical supply power to the state of the supply grid and to stabilize the supply grid. The direct specification of a temporarily modified setpoint value for a building operation parameter is a simple and efficient option of integrating the subordinate open-loop or closed-loop controllers of the building operation devices into the building control system. This measure also makes simple retrofitting possible.

The invention relates to the technical field of boiler transformation, in particular to a coal pulverizing system and method suitable for a medium-speed coal mill, according to the system, an outlet of the coal mill is divided into two paths, one path is used for pulverizing in a direct blowing mode and directly supplying power to a combustor to participate in combustion, and the other path is used for pulverizing in a storage mode and storing powder after being separated by an air-powder separator; when the load is low, the storage side can be used for storing powder, frequent operation of the coal mill caused by load fluctuation is avoided, and stable operation of the coal mill is guaranteed; when the load is high, the storage side rapidly supplements powder for boiler combustion, maintains the air-powder proportion in a hearth to be stable, breaks through the limitation of output of a coal pulverizing system on the variable load rate, meanwhile, after exhaust gas with pulverized coal separated by an air-powder separator is subjected to dust removal, the filtered fine pulverized coal is stored and participates in combustion when deep peak regulation is needed, and the boiler combustion efficiency is improved. Stepped utilization of ventilation air methane pulverized coal is achieved, and ventilation air methane cannot enter a hearth to cause combustion fluctuation. The problem that low-load stable operation and stable combustion of a boiler during deep peak regulation are difficult to consider by an existing coal pulverizing system is solved.

A compact water bottle filling station for mounting to a wall. The station includes a frame supported on the wall by a wall hanger bracket and a basin supported by the frame. The basin includes a receiptacle located between a front lip and a rear edge of the basin, which define a lateral distance therebetween. A cover surrounds the frame on at least three sides and includes a pair of opposed side panels and a front panel located there between. The front panel extends upwardly from the base of the compact bottle filling station and terminates at and underneath the basin. A backsplash extends upward from the basin, adjacent the rear edge, and has a nozzle provided therein to direct water toward the basin.

The invention discloses an existing multifunctional building group distributed energy management system and a transformation method, relates to the technical field of energy management system transformation, and aims to solve the problems that multi-source data of an existing system cannot be fused and unified business support is lacked. The system comprises a distributed energy data acquisition unit which is deployed according to functional areas and energy types and comprises a water supply sub-unit, a heat supply sub-unit, a power supply sub-unit and an auxiliary acquisition sub-unit; the multi-mode communication transmission network is used for data local collection and remote transmission; the energy comprehensive management platform is connected with the communication network and comprises a data middle station, a service middle station and a technology middle station; and the AI quality conformity verification module is used for realizing intelligent verification and long-term trend monitoring of equipment installation quality and data transmission reliability based on an AI model of multi-modal data fusion analysis. The system is suitable for new construction or reconstruction of energy systems of complex building groups such as airports and large-scale parks, and distributed energy monitoring, centralized management and intelligent quality verification can be realized.

The invention relates to an in-situ transformation concrete tower and a construction method thereof, the in-situ transformation concrete tower comprises an original tower and a newly-built concrete tower tube, the newly-built concrete tower tube sleeves the periphery of the original tower and is connected with the original tower, and the newly-built concrete tower tube is connected with the original tower through a connecting piece; the newly-built concrete tower drum comprises a plurality of layers of concrete tower drum units which are spliced up and down, and each layer of concrete tower drum unit is obtained by splicing a plurality of prefabricated concrete pipe pieces; the connecting piece comprises steel plate frames and concrete poured in the steel plate frames, and one steel plate frame is embedded in each prefabricated concrete pipe piece. Compared with the prior art, the original tower is transformed, the periphery of the original tower is sleeved with the newly-built concrete tower drum connected with the original tower, the newly-built concrete tower drum is connected with the original tower through the connecting piece, the bending rigidity can be improved, transportation is convenient, the construction efficiency is improved, and the tower is suitable for various working conditions and original towers and newly-built concrete tower drums with different heights and section sizes.

The invention relates to the technical field of building foundation reinforcement, in particular to an existing building foundation modular reinforcement device and method.The existing building foundation modular reinforcement device comprises a supporting frame, a plurality of through holes evenly distributed in a matrix mode are formed in the supporting frame, and an advancing mechanism is arranged on the supporting frame; the pile entering piece is used for driving reinforcing piles into the reinforcing holes; the grouting piece is used for injecting cement grout into the reinforcing hole; and the pile entering piece comprises a connecting frame arranged in the supporting frame, sliding grooves are symmetrically formed in the two ends of the connecting frame, sliding blocks are arranged in the sliding grooves in a sliding mode, and a lead screw is rotationally arranged between the two sliding blocks. On the other hand, grout is pressed into tiny holes of the foundation, so that the reinforcing piles, the grout and the foundation are integrated, the overall bearing capacity of the foundation is improved, and cavities formed due to the fact that air in the holes is not completely exhausted and the grout is solidified and shrunk are avoided.

The application relates to the technical field of building foundation reinforcement, in particular to a modularized reinforcement device and method for existing building foundation, which comprises a support frame, a plurality of through holes are uniformly distributed in a matrix on the support frame, a traveling mechanism is arranged on the support frame, and the traveling direction of the support frame is sequentially provided with a pile driving part for driving a reinforcing pile into a reinforcing hole, and a grouting part for injecting cement slurry into the reinforcing hole; the pile driving part comprises a connecting frame arranged in the support frame, sliding grooves are symmetrically arranged at the two ends of the connecting frame, sliding blocks are slidably arranged in the sliding grooves, and a screw rod is rotatably arranged between the two sliding blocks; after grouting is completed, the reserved section of the reinforcing pile is slowly pressed down by a push rod, and the un-solidified slurry in the hole is extruded, which fills the hole bottom cavity on one hand and presses the slurry into the tiny pores of the foundation on the other hand, so that the reinforcing pile, the slurry and the foundation are integrated, the overall bearing capacity of the foundation is improved, and the cavity formed due to the un-exhausted air in the hole and the solidification shrinkage of the slurry is avoided.

The invention relates to the field of natural gas hydrogen doping, and particularly discloses a methanol hydrogen production and doping system and a methanol hydrogen production and doping method suitable for existing natural gas gate station reconstruction from the perspective of engineering design, and the methanol hydrogen production and doping system comprises a skid-mounted methanol reforming hydrogen production module which comprises a methanol storage tank, a catalytic reforming reactor and a heat conduction oil circulation unit, the catalyst is used for generating hydrogen-containing mixed gas through catalytic reforming reaction; the pressure swing adsorption purification module and the COcapture module are connected with an outlet of the catalytic reforming reactor; through the skid-mounted modular design, the system can be rapidly deployed by directly utilizing existing facilities of the natural gas gate station, huge investment for newly building a hydrogen conveying pipeline is omitted, the danger of hydrogen conveying is avoided, meanwhile, the energy consumption cost in the hydrogen production process is greatly reduced through a heat recovery mechanism of the heat conduction oil circulation unit, and the energy consumption is reduced. And efficient utilization of energy is realized. The pressure swing adsorption purification module is combined with the COtrapping function, so that the hydrogen purity is greatly improved, the COtrapping rate of 99% or above is achieved, and carbon emission is effectively reduced.

This utility model discloses a dual-input external water turbine hybrid device for cooling towers, relating to the field of energy-saving retrofitting technology for industrial circulating water cooling towers. It includes a water turbine and a motor. The water turbine has an impeller and a turbine shaft, with the impeller linked to the turbine shaft. Couplings are connected to both the output end of the motor and the end of the water turbine. Extension sleeves are provided at both ends of an adjusting sleeve, with T-shaped connecting shafts rotatably inserted into the extension sleeves. One end of the T-shaped connecting shaft extends rotatably into the adjusting sleeve. A gear disc is fixed to the end of the T-shaped transmission rod. Couplings are also connected to the ends of the two T-shaped connecting shafts. A transmission shaft is connected between the couplings at the output end of the motor and the end of the water turbine and the couplings connecting the T-shaped connecting shafts. The two gear discs selectively mesh with tooth grooves. In this utility model, the water turbine and motor are placed on opposite sides of the cooling duct. The water turbine or motor provides power independently for independent maintenance or replacement, or power can be supplied simultaneously.

The utility model relates to the technical field of machine tool auxiliary supporting, and discloses an auxiliary supporting device for machine tool transformation, which comprises a machining table, a supporting frame is connected to the bottom of the machining table, a triangular grounding piece is fixedly connected to the outer wall of the supporting frame, a movable groove is formed in the inner wall of the machining table, a sliding rod is arranged on the inner wall of the movable groove, and the triangular grounding piece is fixedly connected to the inner wall of the sliding rod. The outer wall of the sliding rod is sleeved with a sliding block, a base is installed at the top of the sliding block, a chuck motor is installed at the top of the base, a clamp head is arranged on the outer wall of the chuck motor, a base is installed at the top of the sliding block, a cutter motor is installed at the top of the base, and a cutter installation base is connected to the outer wall of the cutter motor. A drill bit is arranged on the inner wall of the tool mounting seat, and according to the auxiliary supporting device for machine tool transformation, through mutual cooperative use of the outer damping spring, the inner damping spring, the connector and the extrusion rod, vibration force transmitted by the drill bit on the device is gradually counteracted.

This invention discloses an intelligent retrofitting system and method for existing earth-rock dams, comprising: a sensing module for collecting monitoring data, calculating a comprehensive monitoring system evaluation index, identifying and optimizing the monitoring system based on the index, and outputting optimized monitoring data and multi-dimensional defect identification results; an analysis module for calculating an analysis model evaluation index, diagnosing and optimizing the analysis model based on the index, and outputting dam safety status assessment results based on the optimized analysis model; a decision-making module for calculating a decision-making efficiency index, diagnosing and optimizing the decision-making process based on the index, and outputting control commands based on the optimized decision-making process; and a control module for calculating a control performance index, diagnosing and optimizing the control configuration based on the index, executing control commands based on the optimized control configuration, and feeding back the execution result data to the sensing module. This invention enables precise monitoring, scientific analysis, intelligent decision-making, and efficient control.

The utility model relates to heat treatment furnace technical field especially relates to a retrofitting device of new type heat treatment furnace heating pipe, including having the processing box, still including the toothing ring and sealing assembly, processing box inside is provided with the heating furnace, and the heating furnace outer wall rotationally arranged toothing ring, and the heating furnace inner wall is opened with two limit slots, and the toothing ring inner wall is fixedly connected with the connecting column, and the processing box front end is provided with sealing assembly, the utility model discloses drive first gear rotation, because first gear and toothing ring interlock, first gear will drive toothing ring rotation, the toothing ring drive inside connecting column slide along the limit slot inner wall to multiple heating pipe body can reciprocating rotation along the heating furnace inner wall, make heating pipe body can completely cover the magnetic core inside storage box, make the magnetic core even heat, solved the magnetic core inside storage box and each direction heating pipe body distance different, thereby leading to the magnetic core each direction uneven heating, and further influence heat treatment effect problem.

The invention discloses modular existing beam bending-resistant reinforcing equipment in the technical field of existing beams, which comprises a walking positioning vehicle, a telescopic support is fixedly mounted on the walking positioning vehicle, a fixing plate is fixedly connected to the support, and a reinforcing assembly capable of reinforcing the bending resistance of a beam is arranged on the fixing plate. A certain pouring gap can be reserved between the reinforcing assembly and the beam body, the gap is filled with grouting glue, and the steel plate and the beam bottom cooperatively bear tension through bonding and force transmission. Through cooperation of a limiting block and a limiting hole, precise positioning and fixing of the first sticky steel can be rapidly achieved, the operation efficiency is greatly improved, and meanwhile the situation that the reinforcing effect is affected by deviation of the first sticky steel is avoided; the second sticky steel is designed to be opened and closed in a rotatable mode and is matched with the driving assembly to achieve automatic opening, closing and clamping.

The invention relates to an added liquid level controller of a ship shell and tube heater and a use method of the added liquid level controller. The added liquid level controller comprises a mechanical liquid level detection module, a pneumatic control module and an execution adjustment module which are in butt joint with an existing shell and tube heater through a standardized interface; the mechanical liquid level detection module comprises a floating ball detection assembly, the floating ball detection assembly comprises a floating ball and a vertical guide sleeve, and the floating ball is arranged in the vertical guide sleeve; two circulation holes are formed in the side wall of the vertical guide sleeve; the pneumatic control module is mounted in the explosion-proof shell and converts the mechanical displacement signal into a pneumatic signal capable of driving the actuating mechanism; the execution adjusting module is additionally arranged on a pipeline of a condensate water outlet of the shell and tube type heater through a standardized flange, and the condensate water discharge amount is adjusted through a ZJHP pneumatic single-seat adjusting valve so as to control the liquid level. The device is driven only through compressed air, accurate control over the condensate water liquid level is achieved, the heating efficiency and energy recovery are improved, and the device is suitable for safe and energy-saving transformation of ship shell and tube heaters.

This invention discloses an intelligent adjustable multi-hydrofoil high-speed planing boat suitable for both new ship manufacturing and old ship retrofitting, belonging to the field of high-speed vessel technology. The invention includes a hull, three hydrofoil assemblies, and a stern propulsion mechanism. All three hydrofoil assemblies are equipped with a rack and pinion electric lifting mechanism, allowing manual setting and fixing of the overall hydrofoil height to adapt to different navigation draft requirements. Only the bow hydrofoil is hinged and equipped with an AI intelligent real-time control system, which can dynamically adjust the hydrofoil's tilt angle of attack during navigation, adaptively optimizing the hull's planing attitude and improving stability. The stern propulsion mechanism is equipped with a hydraulic lifting device, allowing for overall elevation adjustment of the water depth, achieving shallow-water grounding prevention and high-efficiency deep-water navigation. This invention is applicable to both the overall manufacturing of new ships and the retrofitting and upgrading of existing conventional planing boats. Its novel structural design distinguishes between two adjustment modes: fixed hydrofoil height adjustment and AI real-time intelligent angle adjustment. Combined with the hydraulically adjustable propulsion structure, it significantly improves the planing boat's intelligence, navigation stability, and water adaptability, demonstrating promising application prospects.

The invention discloses an electric heating steam storage, supply and upgrading coupling system which comprises an electrode steam boiler-spherical tank storage and supply system, a steam compressor system and an external steam source. The electrode steam boiler generates high-pressure steam, and the high-pressure steam is distributed to the spherical tank for heat storage or pressure reduction through the high-pressure steam-distributing cylinder and then fed into the medium-low-pressure steam-distributing cylinder. When the spherical tank releases heat, steam with corresponding parameters is output through different flash pressure reducing valves, is converged into a medium-low pressure steam header, passes through a steam electric heater and then is divided into three paths to be matched with a steam compressor system. The steam compressor system improves the quality of input steam, and independent external steam source steam supply, independent storage and supply system steam supply and combined steam supply are achieved through valve control. According to the system, valley electricity or new energy is utilized, through multi-mode switching and parameter regulation and control, the initial investment and operation cost of a project are reduced, safety and reliability are improved, the whole process of demineralized water supply, steam preparation, storage and supply, quality improvement and external steam supply can be completed, and the system is suitable for efficient supply of industrial steam and energy-saving and consumption-reducing transformation.

This invention discloses an optimized control method for heating systems in low-energy buildings based on simulation models. The method first establishes a simulation model of the dynamic heating system and optimizes the system based on real-time electricity prices, building occupancy rates, and outdoor air temperatures to achieve energy-efficient operation while ensuring human thermal comfort. The study first establishes a simulation model of the heating system, including residential buildings, variable frequency pumps, valves, heat exchangers, pipe networks, and boilers. Then, based on factors such as real-time electricity prices, building internal heat load, and outdoor ambient temperature, it optimizes the water supply temperature on the heat source side, the opening control of pumps and valves on the primary side, and the water supply temperature and flow control on the secondary side. This invention achieves a dynamic balance between the supply and demand sides, effectively taps into the potential of demand-side resources, can transfer peak load demand, and improves the system's flexibility and resilience. It is expected to provide new ideas for energy-saving retrofitting and operation and maintenance optimization of heating systems.

This invention relates to the field of paper machine retrofitting technology, and more particularly to a tooling and method for installing a forming roll wire sleeve. It includes a tapered tube, a support assembly, an adjustment assembly, a transmission assembly, and a heating assembly. The wide end of the tapered tube has a lip corresponding to the forming roll shell, and the tapered tube connects to the forming roll shell through the lip. The length of the tapered tube is adapted to the length of the forming roll shell. The support assembly supports the forming roll, the adjustment assembly adjusts the position of the roll core, the transmission assembly drives the forming roll to rotate, and the heating assembly heats the wire sleeve, causing it to adhere to the outer circumference of the forming roll shell. This invention shortens the maintenance cycle, reduces retrofitting costs, and achieves simple and efficient installation and heating of the wire sleeve, making it easier for the wire sleeve to adhere to the roll surface and preventing defects such as warping.

The invention relates to the technical field of energy conservation of environmental protection systems, and discloses an energy-saving and consumption-reducing transformation method for an environmental protection system of a thermal power generating unit, which comprises a shell, a combustion furnace is arranged in the shell, an arc-shaped boss is arranged at the bottom end of the combustion furnace, and a combustion-supporting air supply assembly is arranged on the outer side of the bottom end of the combustion furnace. The combustion air supply assembly comprises a central air supply column arranged in the center of the top end of the arc-shaped boss, the lower end of the central air supply column extends to the lower end of the arc-shaped boss and is connected with a conical air pipe, the lower end of the conical air pipe is connected with a transfer conveying pipeline, and the lower end of the transfer conveying pipeline is in butt joint with a main pipeline; the problems that a traditional combustion chamber is uneven in ventilation and fire coal is stacked and compacted are solved by adopting bidirectional air supply of central radial and axial side air outlets and omnibearing disturbance of the lifting stirring assembly on a coal seam, so that sufficient oxygen supply is obtained from the center to the edge of the fire coal, the combustion efficiency is improved, and the combustion efficiency is improved. The combustion sufficiency is greatly improved, and the core targets of energy conservation and consumption reduction of an environmental protection system are achieved.

The invention discloses a method and a system for accounting NOx and CO2 emissions of a gas-fired boiler and guiding pollution-reduction and carbon-reduction electrified replacement transformation, and belongs to the technical field of energy and the technical field of environmental protection. The method comprises the following steps of: (1) calculating the NOx emission in an accounting period of the gas-fired boiler; (2) calculating the CO2 emission in the accounting period of the gas boiler; (3) pollution reduction and carbon reduction electrified replacement transformation guidance of the gas-fired boiler; the method and the system are wide in applicability, strong in practicability, high in accuracy, convenient and rapid, and can realize automation.

The invention discloses a BIM-based intelligent regulation and control method for energy-saving reconstruction of an existing building, and relates to the technical field of intelligent temperature regulation of buildings, and the method comprises the steps: obtaining the geometric coordinate point cloud data of a target building, constructing a BIM building information model, fusing the sensing data of the Internet of Things, and generating a digital twinborn body; monitoring indoor environment parameters in real time, establishing an indoor environment comfort degree dynamic interval prediction model, coupling external real-time meteorological data, substituting the external real-time meteorological data into a digital twinborn body, and predicting a dynamic load in a future time period; historical energy consumption time sequence data are obtained, future time period dynamic load prediction, external real-time environment parameters and indoor environment comfort degree dynamic interval prediction are fused, an energy consumption equipment collaborative optimization model is established, and an optimal operation strategy set of all energy consumption equipment in the future time period is generated; and linking a BMS building equipment management system based on the generation of the optimal operation strategy set of each energy consumption equipment in the future period, and realizing the self-adaptive regulation and control of the building energy consumption equipment. The building energy efficiency and the indoor environment quality are improved.

This invention discloses a system and method for calculating the benefits of flexibility retrofitting a circulating fluidized bed (CFB) and wind power combined system, belonging to the field of thermal power generation technology retrofitting evaluation. The system includes a retrofitting scheme management module, which inputs one or more CFB unit flexibility retrofitting schemes and their technical parameters to be evaluated; an operation simulation module, communicatively connected to the retrofitting scheme management module, which simulates the operating status of the CFB unit within a target period after the implementation of the input retrofitting scheme and outputs operation simulation data; an economic calculation engine module, communicatively connected to the operation simulation module, which receives the operation simulation data and, in conjunction with retrofitting investment cost data, calculates one or more incremental economic indicators for evaluating the profitability of the retrofitting scheme; and an evaluation report generation module, communicatively connected to the economic calculation engine module, which generates an economic evaluation report recommending the optimal retrofitting scheme based on the economic indicators.

A technique facilitates monitoring of events related to various well operations. According to an embodiment, the technique provides a non-invasive approach to measuring fluid and solids transport through well surface pipe assemblies. The desired information may be detected and obtained by mounting sensors to the exterior of pipes, thus enabling retrofitting of the sensor system to existing assemblies at a desired time during a given operation. Additionally, the technique may utilize a combination of sensors and systems for measuring fluid and solids transport through well flow path assemblies. The measurements obtained may be used to provide real-time monitoring of surface flow conditions as well as of downhole wellbore conditions and of the status of downhole equipment.

The invention relates to the technical field of refrigeration equipment recycling, in particular to a water machine central air conditioner based on multi-split outdoor units and a method. The water machine central air conditioner comprises a refrigerant circulation system which comprises a heat exchanger and at least one multi-split outdoor unit, and when two or more multi-split outdoor units are arranged in parallel; each multi-split outdoor unit and the heat exchanger form circulation through an air pipe and a liquid pipe; the water circulation system is provided with a cold tail end or a heat tail end, and the water circulation system exchanges heat with the refrigerant circulation system through the heat exchanger; according to the technical scheme provided by the invention, the multi-split outdoor unit is used as a main machine of the water machine central air conditioner, so that the multi-split outdoor unit which can only be disassembled and recycled into parts and waste metal originally can be used as a cold and hot water unit, and a new path is provided for reutilization of the waste second-hand multi-split outdoor unit; the solid waste treatment cost for treating the waste multi-split refrigeration air conditioning equipment is reduced, and meanwhile the economic benefits of waste multi-split recovery and transformation are improved.

The invention provides an efficient combined heat and power generation heat supply system adopting low-pressure steam cascade heating. The system comprises an intermediate-pressure cylinder, a low-pressure cylinder section 1, a low-pressure cylinder section 2, a first pipeline, a second pipeline, a condenser, an absorption heat pump and a heat exchanger. In the heating and heat supply stage, part of exhaust steam of the low-pressure cylinder section 1 enters the low-pressure cylinder section 2, so that heat supply network water is sequentially heated by the condenser, the absorption heat pump and the heat exchanger; in the deep peak regulation stage, steam admission of the second section of the low-pressure cylinder is reduced to the lowest steam flow for maintaining safe cooling, so that heat supply network water is sequentially heated by the absorption heat pump and the heat exchanger; and in the rotor replacement stage, steam admission of the second section of the low-pressure cylinder is stopped, so that heat supply network water is sequentially heated by the absorption heat pump and the heat exchanger. The system can solve the problems that in the prior art, combined heat and power generation efficiency and flexibility are difficult to consider, low-temperature waste heat utilization is insufficient, and system modification economy is poor.

This invention discloses a method and apparatus for evaluating wind turbine retrofitting schemes based on operational data, relating to the field of wind power engineering technology. The method includes: collecting at least five years of operational data from the target wind farm; preprocessing the data using the DBSCAN-segmented quartile combination algorithm; restoring the free-flow wind speed through primary and secondary correction functions to separate the impact of wind resource fluctuations and obtain the net power generation revenue increment from the retrofit; and establishing a multi-dimensional comprehensive evaluation system to assess the degree to which the technological upgrade improves the overall benefits of the wind farm. The apparatus includes a data acquisition module, a correction module, and an evaluation module, which execute the steps described above. This invention solves the problems of insufficient representative wind measurement data and single evaluation indicators for retrofitting schemes. By utilizing existing operational data from wind farms, it can effectively isolate the impact of wind resource fluctuations, explore the net power generation revenue increment brought about by the technological upgrade of wind turbines, improve the accuracy and comprehensiveness of the evaluation, and provide a scientific basis for the selection of retrofitting schemes.