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59 results about "Hydronic balancing" patented technology

Hydronic balancing, also called hydraulic balancing, is the process of optimising the distribution of water in a building’s hydronic heating or cooling system by equalizing the system pressure so it provides the intended indoor climate at optimum energy efficiency and minimal operating cost.

Heat supply system hydraulic unbalance real-time correction method and system based on federal learning

The invention relates to the technical field of intelligent regulation and control of a heat supply system, in particular to a heat supply system hydraulic unbalance real-time correction method and system based on federated learning, and the method comprises the steps: constructing a temperature prediction model based on an LSTM neural network, deploying federated nodes at each user side, collecting multi-dimensional heat supply data in real time, and carrying out the preprocessing; local model parameters are encrypted and uploaded to a central server through a federated learning framework, global model parameters are generated based on verification set error dynamic weighted aggregation, and nodes are reversely updated; the updated model is used for predicting the heat load in the next one hour, the valve opening degree is dynamically adjusted in combination with a hydraulic equilibrium algorithm, and whole-network flow and heat demand matching is achieved. According to the method, data privacy is guaranteed through federated learning and a block chain technology, edge calculation and LSTM time sequence prediction are combined, the problems that a traditional method is high in data transmission delay, high in privacy risk and poor in model generalization are solved, and the real-time response capability and the energy utilization efficiency of a heat supply system are remarkably improved.
Owner:TIANJIN JINAN THERMAL POWER

Centralized heating system space-time consistency regulation and control method based on hybrid model driving

The invention discloses a hybrid model driving-based space-time consistency regulation and control method for a central heating system, which comprises the following steps of: performing hydraulic equilibrium analysis on the central heating system, and performing hydraulic analysis on a space structure of a heating pipe network by using a graph theory method based on an energy conservation law, simulating the hydraulic working condition of the official website by using a basic loop analysis method; based on an energy conservation and mass conservation heat balance equation, a heat source and a heat user are indirectly connected through heat exchanger transition, a dynamic physical model of each subsystem is established based on a lumped heat capacity method, a refined model of the heat supply system is established, and the thermal dynamic characteristics of the system are researched and analyzed; based on a Pearson's correlation function, considering thermal inertia of equipment such as a pipe network of the central heating system and a building fence structure, and determining a regulation and control period and time of the regulation and control model; according to the method, by controlling the opening degree of the regulating valve of the heat exchange station, the suitability degree of the room temperature of a heat user is guaranteed.
Owner:DALIAN MARITIME UNIVERSITY

Industrial circulating water evaporation water consumption water-saving control method based on artificial intelligence

The invention discloses an industrial circulating water evaporation water consumption water-saving control method based on artificial intelligence. According to the method, an efficient air cooling device is additionally arranged on the basis of an existing open type cooling tower circulating water system, and a dry-wet combined cooling system is formed through integration of pipelines and valves. The system collects the temperature, flow, pressure, energy consumption and environmental parameters of each node in real time, and after data fusion and preprocessing, the cooling load and evaporation water consumption are calculated based on thermodynamic equilibrium and hydraulic equilibrium models. A multi-objective optimization model which takes minimization of evaporation water consumption as a main part and minimization of energy consumption as an auxiliary part is adopted, an artificial intelligence algorithm is used for real-time solving, optimal control parameters such as flow distribution, fan rotating speed and valve opening degree are output, and dynamic adjustment of the cooling system is achieved. The system continuously corrects and optimizes model parameters through a closed-loop feedback and self-learning mechanism, ensures that the water supply temperature reaches the standard, the evaporation water consumption is minimum and the energy consumption is optimal, and remarkably improves the water saving and operation efficiency of the industrial circulating water system.
Owner:NANJING REENG TECH

Hydraulic intelligent balance regulation and control method and platform for multiple systems of heat exchange station

The invention discloses a hydraulic intelligent balance regulation and control method and platform for multiple systems of a heat exchange station, and relates to the technical field of hydraulic balance of central heating systems, and the method comprises the steps: obtaining the real-time operation data of multiple heating systems of the heat exchange station, calculating the heat consumption data of a unit area, analyzing the hydraulic unbalance, and obtaining a hydraulic supply state parameter set; temperature change parameters of the heat exchange station are monitored, and a climate compensation adjustment curve is constructed in combination with hydraulic unbalance indexes; collaboratively optimizing the two to generate a multi-system valve control instruction set; adjusting and monitoring according to the instruction set and then feeding back and backtracking, and constructing a hydraulic balance regulation and control strategy to realize intelligent control. The technical problems that due to the fact that regulation and control of the multiple heat supply systems of the heat exchange station are lack of pertinence and collaboration and inaccurate in state judgment, heat supply is uneven and energy consumption is too high are solved, and the technical effects that the operation states of the multiple systems of the heat exchange station are precisely controlled and cooperatively adjusted, heat supply balance is improved, and overall energy consumption is reduced are achieved.
Owner:BEIJING DALONG HEATING SUPPLY CENT

Energy consumption optimization control method and system for heating and ventilation equipment

The invention belongs to the technical field of energy consumption management, and particularly relates to an energy consumption optimization control method and system for heating and ventilation equipment, and the method comprises the steps: constructing a distributed pump set architecture, and converting a transmission and distribution system from a centralized regulation and control mode into a distributed regulation and control mode; developing adaptation technology and equipment; establishing a dynamic hydraulic balance regulation and control model by combining a digital twinning technology and an intelligent algorithm; the dynamic regulation and control model is used for optimizing the pump set operation state and the valve opening degree in real time; by constructing a distributed pump set framework, the system can independently adjust the rotating speed of the pump units according to the actual requirements of different sub-areas, the adaptability of the system to different working conditions and load changes is greatly improved, and the heating and ventilation requirements of all the areas can be more accurately met; the problem of excessive energy supply or insufficient energy supply of partial areas caused by overall adjustment in a centralized regulation and control mode is avoided, so that the overall operation efficiency and comfort of the system are effectively improved.
Owner:CHINA RAILWAY NO 2 ENG GROUP CO LTD +3

Method for optimizing hot water circulation efficiency in building heat supply system

The invention discloses a hot water circulation efficiency optimization method in a building heat supply system, and belongs to the technical field of building energy management and heat supply control. Comprising the steps that 1, historical operation data and current system parameters of the building heat supply system are obtained; 2, constructing a three-dimensional working condition feature library containing load features, time dimensions and operation modes, and calculating the occurrence probability and importance coefficient of each working condition in advance; 3, current operation data of the building heat supply system are collected in real time; step 4, identifying the type of the current operating condition of the system, and obtaining a feature weight corresponding to the operating condition; 5, performing quantitative evaluation on the hydraulic balance, the thermal distribution characteristic and the energy consumption level of the system under the current working condition, and generating a working condition operation characteristic evaluation report; and 6, judging whether the current operation state meets a preset efficiency standard or not according to the working condition operation characteristic evaluation report.
Owner:DALIAN VOCATIONAL & TECHNICAL COLLEGE (DALIAN OPEN UNIVERSITY)

Parallel cooling tower group hydraulic balance adjusting device and parallel cooling tower group

The application discloses a parallel cooling tower group hydraulic balance adjusting device and a parallel cooling tower group, and belongs to the technical field of centralized central air conditioner hydraulic balance adjusting. The device comprises a shell, a water inlet channel for cooling circulating water, at least two water outlet channels for discharging the cooling circulating water, and a static pressure shunt cavity connecting the water inlet channel and the water outlet channel; a shunt plate is fixed in the static pressure shunt cavity and abuts against the top wall surface and the bottom wall surface of the static pressure shunt cavity, so that the static pressure shunt cavity is divided into at least two shunt cavities with equal volumes; wherein the water inlet channel comprises a first end and a second end, the first end extends into the static pressure shunt cavity, and is arranged to be inclined towards the top wall surface of the static pressure shunt cavity. The application can ensure equal distribution of water flow on both sides of the cooling tower and minimize the total resistance of the cooling water system.
Owner:SHANGHAI ACEC REFRIGERATION TECH CO LTD

Hydraulic balance adjusting method and system

The invention provides a hydraulic balance adjusting method and system, and relates to the technical field of data processing, and the method comprises the steps: 1, dividing buildings into independent adjusting groups according to the thermal insulation performance difference of the buildings, and determining a representative building for each group; a third pressure sensor is fixed on a water return pipeline, a first pressure sensor is fixed on a heat source outlet pipeline, and a second pressure sensor is fixed on a heat exchange station inlet pipeline; step 2, recording and setting group target water flow based on each group of historical water flow, and acquiring main line pressure variation between the first pressure sensor and the second pressure sensor in real time; by grouping according to the building thermal insulation performance, deploying the sensors to monitor the pressure in real time, combining historical flow and pipe network distance dynamic compensation, and based on temperature deviation and actually measured flow closed-loop optimization, accurate hydraulic balance regulation and control are achieved, heat supply uniformity is improved, energy consumption is reduced, system stability is enhanced, and the service life of equipment is prolonged.
Owner:BEIJING YONGXIN JIACHENG ENG TECH CO LTD

Air source heat pump energy-saving system

The utility model discloses an air source heat pump energy-saving system, and relates to the technical field of air source (geothermal source) heat pump installation. Comprising a tonnage type flat-top heat preservation water tank, a plurality of air source heat pumps are arranged in the tonnage type flat-top heat preservation water tank, the air source heat pumps are connected with a water supply pipe and a water return pipe through rubber flexible connectors and ball valves respectively, the water supply pipe is connected with a first buffer water tank through a circulating pump, and the water return pipe is directly connected with a second buffer water tank. The first buffer water tank and the second buffer water tank are connected through a hydraulic balance pipe, the second buffer water tank is connected to the water outlet through a circulating pump, and the first buffer water tank is directly connected to the water outlet. The temperature of the heating tail end is increased through the system, and the purposes of high efficiency and energy conservation are achieved.
Owner:苏国田

Annular circulation system based on natural gas verification

The utility model discloses a loop circulation system based on natural gas verification. The loop circulation system comprises a loop unit, a temperature control unit, a flow control unit, a flow detection unit and a main control unit, natural gas circulates in the loop unit; the temperature control unit comprises a heat exchanger arranged on the loop unit and a cooling unit connected with the heat exchanger; the cooling unit comprises a hydraulic balance device, a refrigerating unit, a water return pipe group and a water outlet pipe group; a regulating valve and a compensating heater are arranged on the water outlet pipe group; a first return pipe group and a second return pipe group are arranged between the water outlet pipe group and the return pipe group; the flow detection unit comprises a working-grade standard flow meter and a detected flow meter which are arranged on the loop unit; the flow control unit comprises a circulating fan and a backflow regulator which are arranged on the loop unit; according to the system, the temperature, the pressure and the flow of the natural gas in the loop can reach the preset range quickly and accurately, the maintaining capability is high, the verification precision is high, and operation is easy.
Owner:BEIJING SUPER MEASUREMENT & CONTROL EQUIP TECH CO LTD

Loop steady-state circulation control system for natural gas flow verification

The invention discloses a loop steady-state circulation control system for natural gas flow verification. The loop steady-state circulation control system comprises a loop unit, a temperature control unit, a flow control unit, a flow detection unit and a main control unit. Natural gas circulates in the loop unit; the temperature control unit comprises a heat exchanger arranged on the loop unit and a cooling unit connected with the heat exchanger; the cooling unit comprises a hydraulic balance device, a refrigerating unit, a water return pipe group and a water outlet pipe group; a regulating valve and a compensating heater are arranged on the water outlet pipe group; a first return pipe group and a second return pipe group are arranged between the water outlet pipe group and the return pipe group; the flow detection unit comprises a working-grade standard flow meter and a detected flow meter which are arranged on the loop unit; the flow control unit comprises a circulating fan and a backflow regulator which are arranged on the loop unit; according to the system, the temperature, the pressure and the flow of the natural gas in the loop can reach the preset range quickly and accurately, the maintaining capability is high, the verification precision is high, and operation is easy.
Owner:BEIJING SUPER MEASUREMENT & CONTROL EQUIP TECH CO LTD

Self-adaptive hydraulic balance adjusting method and device based on meteorological element collaboration

The invention discloses a self-adaptive hydraulic balance adjusting method and device based on meteorological element collaboration, and the method comprises the steps: obtaining the operation data and meteorological element data of a regional heat supply system, including the return water temperature, circulating pump frequency, valve opening and outdoor temperature information of each unit; preprocessing the acquired data information, eliminating abnormal data by adopting a Pauta method, and supplementing missing data by using a Lagrange interpolation method to ensure the integrity and continuity of the data; constructing a meteorological element collaborative adaptive fuzzy control model, and performing hydraulic balance regulation and control by adopting an adaptive optimization algorithm; in a regional heat supply system, a meteorological element cooperative control algorithm is adopted to adjust the opening degree of a valve of each unit in real time, it is ensured that the return water temperature of each unit tends to be consistent, and hydraulic balance is achieved; the effect of a meteorological element cooperative control algorithm is evaluated according to an experimental result, indoor temperature balance of a user is controlled, and a small-flow and large-temperature-difference operation mode is achieved by adjusting the frequency of a circulating pump.
Owner:DALIAN MARITIME UNIVERSITY

Energy-saving optimization and hydraulic balance adjusting system for heating system

This invention provides an energy-saving optimization and hydraulic balance regulation system for heating systems, relating to the field of heating system technology. It includes a data acquisition and detection module; a digital twin and simulation prediction module; a network-wide balancing module for adjusting the operating parameters of the heating system based on the output of the digital twin and simulation prediction module; an energy-saving control module; a terminal control module for adjusting indoor temperatures collected by a room temperature detection device; an operation management module; and a fault diagnosis and early warning module. This invention, by constructing a digital twin model of the heating system, reduces the probability of data distortion in the twin model and deviations from actual simulation predictions caused by complex underground or outdoor environments where pipe networks are often located, sensors are susceptible to low temperatures and corrosion, and data transmission is prone to delays or interruptions. Furthermore, the system directly transmits data to field equipment via a cloud-edge-device collaborative system, eliminating the need for manual relay and reducing delays and operational errors.
Owner:SHANDONG SANSHI ENERGY TECHNOLOGY CO LTD

Multi-user central heating pipe network temperature balance control adjustment method

The application discloses a kind of multi-user centralized heating pipe network temperature balance control adjustment method, through actual indoor and outdoor temperature, historical operation data prediction heat load, control valve opening adjustment actual circulating flow and the deviation between design flow, calculate predicted load return water temperature, carry out thermal and hydraulic balance adjustment to primary network, then carry out thermal and hydraulic balance adjustment to secondary network, then carry out thermal and hydraulic balance adjustment to each user unit, repeat the above steps to make heat network whole reach thermal and hydraulic balance state.The application can effectively alleviate the adjustment difficulty caused by strong coupling and hysteresis between primary and secondary network and different users, greatly improve the work efficiency of heat network temperature balance adjustment, reduce the time and energy of traditional heat network consumption personnel, improve the overall coordination and scheduling capability of heating system, avoid the waste of heat and electricity caused by traditional heat network adjustment mode, and the uneven heating and high complaint rate caused by water and thermal imbalance.
Owner:HUANENG TONGCHUAN ZHAOJIN COAL POWER CO LTD +3

Method for rapid debugging of hydraulic balance of water system in electronic factory building

The application discloses a kind of electronic factory warm water system hydraulic balance rapid debugging method, first according to design drawing build simulation model including pressure boundary, main supply return water pipe, branch pipe, balance valve and equivalent resistance loss element, balance valve is adjusted to intermediate ring number, corresponding resistance coefficient is input to simulation model, then each branch balance valve is adjusted to intermediate ring number, the pressure drop, flow and main supply return water pressure of each branch balance valve under current working condition are measured, and input simulation model calculates the resistance coefficient that each branch equivalent resistance loss element needs to be set, combined with design flow, the most unfavorable branch balance valve opening degree is set to 1, the resistance coefficient and ring number of other branch balance valve adjustment are calculated, and balance valve is actually adjusted to corresponding ring number and locked, adjust pump speed to make total flow standard, realize hydraulic balance.The application combines simulation and field test, all balance valves are considered as a whole, compared with traditional manual debugging and hydraulic calculation method, the setting ring number of all balance valves can be given at one time, with high accuracy and short debugging time.
Owner:CHINA ELECTRONICS SYST ENG NO 2 CONSTR +1

Control method and device of air conditioner and control system of air conditioner

The application discloses a control method and device of an air conditioner and a control system of the air conditioner, and belongs to the technical field of air conditioner control. The fan-coil unit of the air conditioner comprises multiple wind discs, the multiple wind discs comprise a first wind disc which is turned on and a second wind disc which is not turned on, and the control method of the air conditioner comprises the following steps: determining a target number based on a first number of the first wind disc; determining a third wind disc with the target number from the second wind disc; and controlling a two-way valve of the third wind disc to be turned on to a first target opening degree, wherein the third wind disc is used for balancing the pressure difference caused by the first wind disc. According to the method, the number of the third wind disc which needs to be bypassed in the second wind disc is determined according to the number of the first wind disc in the fan-coil unit, the two-way valve of the third wind disc is controlled to be turned on to the first target opening degree, the hydraulic balance of the water system of the air conditioner can be realized without installing a pressure difference bypass valve, the installation cost of the air conditioner can be saved, and the air conditioner leakage problem caused by the installation of the pressure difference bypass valve can be avoided.
Owner:NANJING TICA AIR CONDITIONING CO LTD

Hydraulic balance coupling integrated module

The invention provides a hydraulic balance coupling integrated module, and relates to a water machine air conditioning system technology. The hydraulic balance coupling integration module used in the water machine air conditioning system comprises a module outer box shell, a left side tank body and a right side tank body, the top of the left side tank body is connected with a water outlet circulating pump through a first screw thread, a primary side circulating outlet is formed in the upper end of the water outlet circulating pump, and a primary side circulating inlet is formed in the bottom of the left side tank body; a blow-down valve port is fixedly connected to the bottom of the left tank body, a secondary side circulation inlet is fixedly connected to a top pipeline of the right tank body, a second circulation pump is arranged at the bottom of the right tank body, a secondary side circulation outlet is formed in the bottom of the second circulation pump, and an exhaust valve connector is fixedly connected to the top of the right tank body. And the left tank body and the right tank body are connected through a connecting pipeline. According to the integrated module, traditional scattered parts are integrated into a standardized module, a differential pressure bypass valve is omitted, the installation process is simplified, space is saved, and energy consumption is reduced.
Owner:QUZHOU JIAHE HOT WATER TANK CO LTD

A centralized heating overall optimization control method and system

This invention discloses a centralized heating overall optimization control method and system, comprising: adjusting the opening of dedicated balancing valves at other control points of the secondary network based on the hydraulic state indication value of the most unfavorable loop in the secondary network; adjusting the opening of the primary side electrically adjustable valve of the heat exchange station in real time through the flow control variable of the primary side electrically adjustable valve; realizing active variable flow operation of the secondary side of the heat exchange station through the circulation flow control variable of the circulating water pump on the secondary side of the heat exchange station; and calculating the setpoint of the heat source supply water temperature based on the basic setting and compensation value of the heat source supply water temperature, implementing supply water temperature control, and combining the minimum pressure difference on the primary side of the most unfavorable heat exchange station to achieve variable flow operation, thereby realizing the matching of heat supply and demand between the source and the network. This method is based on the hydraulic balance of the secondary network and gradually moves towards the heat source to achieve effective control of indoor temperature, meet the user's heating quality and thermal comfort requirements, and minimize the energy consumption and pollutant emissions of the heating system, actively responding to the national "dual carbon" strategic goal.
Owner:LANGFANG JIELANTE INTELLIGENT TECH CO LTD

Adjusting device for hydraulic balance of heating network

The utility model discloses an adjusting device for hydraulic balance of a heat supply network, and relates to the technical field of heat supply adjustment. By arranging the linkage rod, the limiting fluted disc, the adjusting plate and the pressing plate, the pressing plate drives the limiting protruding block to extrude the matched spring, the matched spring deforms, the limiting protruding block is separated from the limiting fluted disc, then the linkage rod can be rotated to drive the adjusting plate to rotate in the connecting pipe body, and the angle between the adjusting plate and the matched sleeve is adjusted; the gap between the adjusting plate and the matching sleeve is adjusted, then the limiting protruding block is loosened, under the action of the matching spring, the limiting protruding block is clamped with the limiting fluted disc again, the position of the adjusting plate is fixed, and therefore the circulation rate of hot water is adjusted, the structure is simple, and the production cost is low. By arranging the matched sliding rails and the filter plate, the filter plate is inserted into the connecting pipe body along the matched sliding rails, the matched cover plate is fixed to the connecting pipe body through the fastening screws, supplied water is filtered through the filter plate, and follow-up influences are avoided.
Owner:CHINA CONSTR SECOND BUREAU INSTALLATION ENG CO LTD

Heating secondary network personalized control method based on large model and multi-modal image

The application discloses a heat supply secondary network personalized regulation and control method based on a large model and multi-modal portraits, and comprises the following steps: acquiring multi-modal data of each heat user of a heat supply system secondary network, performing feature extraction and importance analysis by using a large model, and then constructing each heat user portrait of the secondary network; performing information extraction on each household operation mode of the heat supply system secondary network, combining the heat user portrait selected for the household operation mode, and generating an operation mode portrait of the household operation mode by using the large model; inputting each heat user portrait and the operation mode portrait of the secondary network into the large model for matching analysis, and outputting personalized operation mode recommendation results and recommendation rhetoric for each heat user; after recommending the selected operation mode to the heat user, training and optimizing a household regulation and control large model of the heat supply system secondary network according to the operation mode selected by the heat user, the heat user portrait and the established household regulation and control knowledge graph, combining hydraulic balance mechanism knowledge of the heat supply network, and outputting a household regulation and control strategy of the secondary network.
Owner:CHANGZHOU ENGIPOWER TECH

Method for intelligent monitoring and hydraulic balance implementation of capillary network system

The application discloses an intelligent monitoring and hydraulic balance implementation method of a capillary tube network system, and belongs to the field of intelligent regulation and control of building heating, ventilation and air conditioning. The method solves the problems of low efficiency of traditional manual debugging and inability to maintain hydraulic balance for a long time. The scheme is as follows: first, intelligent monitoring nodes are arranged at key node positions to collect data, the data are uploaded to a central control system through an edge computing gateway, a built-in hydraulic network calculation model is used to solve system states and output hydraulic imbalance degrees, when the hydraulic imbalance degrees exceed the limit, the system is inversely calculated and encrypted target opening degree instructions are issued to each loop digital twin driven electric balance valve, a closed loop regulation is performed by an embedded controller of the valve, and finally, after installation is completed, a full-automatic initialization debugging is performed, initial opening degree compensation values of the digital twin driven electric balance valves are calculated and written into valve embedded controllers, and presetting is completed. The application is used for realizing automatic construction and continuous and accurate regulation and control of hydraulic balance of the capillary tube network.
Owner:SINOHYDRO BUREAU 6 CO LTD

Device and method for simple and optimal adjustment of the flow rate of a heat carrier through a radiator valve

The present invention presents a device (8) and an associated method for carrying out a hydraulic balancing of a radiator (2) in a heating system (1), which enables and ensures the adjustment of the hydraulic balancing in a technically simple and uncomplicated manner, resulting in considerable cost savings. The device according to the invention essentially consists of an intermediate piece (9) which receives an adjusting element (13) by means of a thread (12). The adjusting element (13) has a stepped axial recess (18) in which a transmission element (19) is mounted so as to be axially displaceable. According to the invention, the maximum degree of opening or the position of the valve insert (6) is preset, i.e. adjusted, using the adjusting element (13), whereby the target temperature of a room to be heated is set without removing the valve insert (6) to be adjusted and / or completely replacing the radiator valve.
Owner:RUTKE HELMUT

Hydraulic balance artificial adjusting method and device based on mechanical differential pressure measuring instrument

The application discloses a kind of based on mechanical pressure difference measuring instrument's hydraulic balance artificial regulation method and device, belong to central heating technical field.Mechanical pressure difference measuring instrument includes transparent tubular body with scale, both ends are equipped with end sealing assembly, inside is equipped with piston assembly and elastic piece, piston assembly separates internal chamber into high-pressure area and low-pressure area, end sealing assembly is equipped with pressure guide pipe interface and exhaust valve interface.Hydraulic balance regulating device includes manual regulating valve and the pressure difference measuring instrument in each regulating unit heat inlet.Hydraulic balance artificial regulation: adjust circulating water pump to target working condition and determine required pressure difference;Measure actual pressure difference;Calculate pressure difference deviation rate and preset control interval as regulation precision evaluation basis;According to the comparison result of deviation rate and control interval, adjust manual regulating valve.The application significantly improves the pressure difference measurement precision, can effectively solve the problem of heating system hydraulic imbalance, with the advantages of investment and regulation precision high.
Owner:HENAN POLYTECHNIC UNIV +1

Heat exchange station on-demand heating regulation and control method based on dynamic hydraulic equilibrium regulation and double-room-temperature evaluation

The invention relates to an intelligent regulation and control method for a heat exchange station based on dynamic hydraulic equilibrium regulation and double-room-temperature monitoring and evaluation. By constructing a secondary network topological graph, a flow pressure balance equation is constructed, and the flow pressure balance equation comprises a flow balance equation and a pressure balance equation. According to the pipe network valve opening and closing data and the pipe network flow pressure detection data, the flow balance equation and the pressure balance equation are combined, and preliminary water conservancy balance is obtained; and on the basis, a double-room-temperature evaluation model is constructed, and the heat exchange station is intelligently regulated and controlled according to the obtained building comprehensive room temperature and room temperature dispersion standard deviation coefficient. A dynamic hydraulic equilibrium algorithm and a hydraulic equilibrium decoupling control scheme are constructed based on double-room-temperature evaluation, and the purposes that energy consumption and power consumption are reduced, and the room temperature reaches the standard are achieved.
Owner:LANZHOU JIAOTONG UNIV

Valve actuator

ActiveCN309929290SValve actuatorPhysics
1. Name of the product in this design: Valve Actuator. 2. Purpose of this design: For hydraulic balance control in heating systems. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.
Owner:RUINA INTELLIGENT EQUIP CO LTD

Hydraulic balancer and cooling tower equipment

The utility model discloses a hydraulic balancer and cooling tower equipment, and relates to the technical field of cooling equipment.The hydraulic balancer comprises an outer cylinder, an inner cylinder and a top plate, a mounting cavity is formed in the outer cylinder, and the outer cylinder is provided with a liquid inlet channel, a liquid outlet channel and a mounting opening which are communicated with the mounting cavity; the inner cylinder is detachably arranged in the mounting cavity, a buffer channel is formed in the inner cylinder, and the buffer channel is communicated with the liquid inlet channel and the mounting cavity; the periphery of the top plate is detachably connected to the mounting opening of the outer barrel, and the top plate is connected with the inner barrel. According to the technical scheme, the problem that an existing hydraulic balancer is integrally formed and is difficult to disassemble during later maintenance can be solved.
Owner:CHINA CONSTRUCTION THIRD BUREAU FIRST ENGINEERING & MEP CO LTD +1

Multi-stage differential pressure reset air conditioning variable flow chilled water system and method

The application relates to the technical field of air conditioner control, and discloses a multi-stage pressure difference reset air conditioner variable flow cold water system, which comprises a water supply main pipe, a return water main pipe, at least one riser system, a variable frequency water pump, a microcontroller MCU and a control unit on the network side, the riser system is arranged in parallel between the water supply main pipe and the return water main pipe, and the variable frequency water pump is arranged at the input end of the water supply main pipe; the riser system and the variable frequency water pump are signal-connected with the microcontroller MCU, and the microcontroller MCU is signal-connected with the control unit through a wireless communication module. The application also simultaneously provides a control method of the multi-stage pressure difference reset air conditioner variable flow cold water system. Through the multi-stage pressure difference reset, the application can adapt to the load through cold quantity adjustment, can dynamically carry out hydraulic balance according to actual conditions, can guarantee required flow, can minimize the water pump inlet and outlet pressure difference as much as possible, and can improve water system energy-saving capacity.
Owner:ZHEJIANG SCI-TECH UNIV

Three-loop hydraulic balance device of central air-conditioning cooling water system

The utility model relates to a three-loop hydraulic balance device of a central air-conditioning cooling water system. The three-loop hydraulic balance device structurally comprises a refrigeration station cooling water circulation loop, a tower periphery cooling water circulation loop and a tower top cooling water circulation loop. The utility model has the advantages that the structure design is reasonable, the hydraulic balance of the cooling water system is realized, the uniform water distribution of each water distribution port of the cooling tower can be ensured, the operation efficiency of the cooling tower can be improved, the system is convenient to overhaul and switch, and the cooling water system is suitable for places with high requirements on the hydraulic uniformity of the cooling tower system, especially for places with high energy efficiency of the system. And high-efficiency refrigerating machine rooms and the like are provided.
Owner:CLP ZHIWEI (SHANGHAI) TECH CO LTD

wall-hung boiler hydraulic balancer

1. Name of the product in this design: Hydraulic balancer for wall-hung boilers. 2. Purpose of this design: Used in wall-hung boiler water heating systems for hydraulic balance adjustment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.
Owner:刘雪琴

Energy-saving optimization control method and system for building heating system

This invention belongs to the field of intelligent control technology, specifically disclosing an energy-saving optimization control method and system for building heating systems. By combining the dual feedback of actual indoor temperature and actual return water temperature at each heating terminal, it constructs heat demand characteristics, reflecting the user's actual heating needs more accurately than simply relying on outdoor temperature compensation. Through dynamic grouping of each heating terminal and implementation of differentiated heating control strategies, and by calculating the return water temperature difference dispersion coefficient to correct the hydraulic balance of heating branch pipelines, it effectively solves the hydraulic and thermal imbalance problems and energy waste caused by the traditional heating control method's neglect of uneven heat distribution within the building, resulting in insufficient heating at distant points and overheating at nearby points. This avoids overheating, achieves precise on-demand heating, and effectively saves energy.
Owner:BEIJING KAMUFU SCI&TECH CO LTD