Method and system for operating hot and cold supply pipelines of condensing unit

Abstract

The present application relates to the field of supply pipeline input, and discloses a method and a system for operating hot and cold supply pipelines of a condensing unit. The method comprises: constructing a hot and cold supply pipeline system of a condensing unit, and acquiring parameter information of pipelines in the system; on the basis of supply demands, issuing a valve control instruction for the hot and cold supply pipeline system of the condensing unit; fine-tuning the valve control instruction by using the parameter information of the pipelines and the valve control instruction; and performing valve control on the basis of the fine-tuned valve control instruction, so as to complete fluid inflow into the pipeline system. The present application effectively improves the operating efficiency of the hot and cold supply system of the condensing unit, enables maximization of heat exchange efficiency, reduces energy waste, and ensures stable operation of the system under different loads and environmental conditions.

Description

A method and system for operating the cooling and heating supply pipeline of a condensing turbine unit

[0001] This application claims priority to Chinese Patent Application No. 202411900610.7, filed on December 23, 2024, entitled "A Method and System for Operating Cold and Hot Supply Pipelines of a Condensing Unit", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of supply pipeline input technology, and in particular to a method and system for operating hot and cold supply pipelines of a condensing turbine unit. Background Technology

[0003] Condensing turbine heating and cooling supply systems are widely used in the industrial and energy sectors, involving the coordinated operation of equipment such as heat pumps, heat exchangers, and cooling tanks.

[0004] Existing systems often rely on fixed valve settings and simple control strategies, making it difficult to cope with load fluctuations and environmental changes, resulting in low energy efficiency and poor system stability. Heat exchange efficiency is crucial to system performance, but current methods fail to fully utilize real-time data for dynamic optimization. Traditional valve control relies on experience and routine adjustments, making it difficult to accurately match system requirements and resulting in slow response times, thus failing to achieve efficient and intelligent fluid control. Summary of the Invention

[0005] The purpose of this application is to provide a method and system for operating the cold and heat supply pipeline of a condensing unit, which can optimize valve control, improve heat exchange efficiency and system stability according to real-time demand, so as to cope with complex cold and heat supply needs and improve the overall performance and energy efficiency of the system.

[0006] To achieve the above objectives, this application provides the following solution:

[0007] In a first aspect, this application provides a method for operating a condensing unit's hot and cold supply pipeline, the method comprising:

[0008] Construct a piping system for the cooling and heating supply of the condensing unit and obtain parameter information from the system piping;

[0009] Based on supply demand, valve control commands are issued to the piping system for the cooling and heating supply of the condensing unit;

[0010] The valve control command is fine-tuned using the pipeline parameter information and the valve control command.

[0011] The valve is controlled according to the fine-tuned valve control command to complete the flow of fluid into the pipeline system.

[0012] In one embodiment, the piping system for the cooling and heating supply of the condenser unit includes: a buffer tank, a heat exchanger, a heat pump, a cooling pool, a heat source, cooling and heating users, and a circulating pump;

[0013] There are three heat exchangers: a first heat exchanger, an intermediate heat exchanger, and a second heat exchanger.

[0014] The buffer tank is used to buffer the pressure of the unit, thereby controlling the pressure of the heat pump;

[0015] The heat pump is connected to the intermediate heat exchanger, then to the first heat exchanger, and back to the heat pump; the heat pump is used to transport liquid to participate in the heat cycle.

[0016] The hot and cold users return to the hot and cold users after passing through the second heat exchanger;

[0017] The cooling pool is connected to the circulating pump and then to the intermediate heat exchanger. The intermediate heat exchanger is connected to the second heat exchanger and returns to the cooling pool. In the pipeline connecting the intermediate heat exchanger to the second heat exchanger, it is connected to the pipeline returning to the cooling pool from the second heat exchanger.

[0018] Each section of the pipeline contains a valve.

[0019] In one embodiment, the piping system for the condenser unit's heating and cooling supply further includes: steam from different pressure units passes through the buffer tank to provide pressure to the heat pump, and then returns to the unit to complete the pressure supply.

[0020] In one embodiment, the heat cycle includes switching between two modes according to the needs of the heating and cooling process when the system requires heating. In the first mode, if slow heating and cooling are required, the control valve connects the second heat exchanger, the cooling pool, the circulating pump, and the intermediate heat exchanger in sequence, returning to the second heat exchanger to form a closed loop, which serves as the first loop. The circulating pump is turned on, and the heat pump heat passes through the intermediate heat exchanger to exchange heat with the first loop, and then sends the heat to the second heat exchanger.

[0021] Second mode: If rapid heating and cooling are required, the circulation pump is turned off, and the control valve connects the second heat exchanger and the intermediate heat exchanger in sequence to form a closed loop, which is the second loop; the heat pump heat passes through the intermediate heat exchanger and exchanges heat with the second loop, and then sends the heat to the second heat exchanger.

[0022] In modes requiring rapid heating and cooling, when the heat pump heat needs to be cooled, it exchanges heat with the cooling pool through an intermediate heat exchanger to complete the cooling process.

[0023] The second heat exchanger exchanges heat with the cold and hot users to complete the heating supply.

[0024] In one embodiment, when cooling is required, the cooling system connected to the cooling pool operates to cool the cooling pool; the valve is controlled according to the first loop method, at which time the intermediate heat exchanger does not exchange heat, the circulating pump is turned on, the liquid in the cooling pool passes through the second heat exchanger and exchanges heat with the user, thus completing the cooling supply.

[0025] In one embodiment, the parameter information of the pipeline includes: liquid temperature and flow rate;

[0026] Fine-tuning the valve control command includes: during the heat cycle, analyzing the heat exchange efficiency based on the temperature of the liquid transported by the heat pump at the intermediate heat exchanger and the current flow rate, and controlling the valve opening and closing based on the analysis results;

[0027] If the analysis results indicate low heat exchange efficiency, gradually increase the valve opening; if the analysis results indicate high heat exchange efficiency, gradually decrease the valve opening. During the opening adjustment process, continue to analyze the heat exchange efficiency until the analysis results show that the heat exchange efficiency is matched.

[0028] In one embodiment, the heat exchange efficiency includes: analyzing the heat exchange efficiency for the two modes respectively;

[0029] Let the preset heating time be T0, and the preset target temperature be C0; using the preset heating time as a constraint: T < T0; C0 < C < C0 × α max ;

[0030] Where T represents the predicted heating time to reach C0; C represents the predicted maximum temperature after heating; α max This represents the maximum overtemperature coefficient, 1 < α max ;

[0031] If T≥T0 or C0≥C, the analysis result indicates low heat exchange efficiency; if C≥C0×α max If the conditions are met, the analysis result is that the heat exchange efficiency is high; if the constraints are satisfied, the analysis result is that the heat exchange efficiency is matched.

[0032] Construct an improved neural network, including: an input layer, three hidden layers, and an output layer;

[0033] Three hidden layers are used to analyze the nonlinear relationships of input features in the intermediate heat exchanger, the second heat exchanger, and the cooling pool, respectively.

[0034] Let the intermediate heat exchanger correspond to the first hidden layer, the second heat exchanger correspond to the second hidden layer, and the cooling pool correspond to the third hidden layer;

[0035] In the first mode, the input layer obtains the cooling pool capacity, the current temperature of the cooling pool, the flow rate of the heat pump transport liquid in the intermediate heat exchanger, and the inflow and outflow temperatures of the heat pump transport liquid in the intermediate heat exchanger, and packages them as the first input feature; the first input feature passes through the first hidden layer, the third hidden layer, and the second hidden layer in sequence, and is cyclical, and the output layer outputs the prediction result;

[0036] In the second mode, the input layer obtains the flow rate of the heat pump transport liquid in the intermediate heat exchanger, the inflow temperature and the outflow temperature of the heat pump transport liquid in the intermediate heat exchanger, and packages them as the second input feature; the second input feature passes through the first hidden layer and the second hidden layer in sequence and is cyclical, and the output layer outputs the prediction result;

[0037] During the loop, when the target temperature is reached, the predicted heating time T is output; when the maximum temperature is reached, the maximum temperature is output, and the loop ends.

[0038] Secondly, this application also provides a condensing unit cold and heat supply pipeline operation system employing the method described in the first aspect, the condensing unit cold and heat supply pipeline operation system comprising:

[0039] The data acquisition module is used to construct the piping system for the cooling and heating supply of the condensing unit and to acquire parameter information in the system piping.

[0040] The control module is used to issue valve control commands to the piping system for the cooling and heating supply of the condensing unit according to supply demand;

[0041] The adjustment module is used to fine-tune the valve control command using the parameter information of the pipeline and the valve control command;

[0042] The execution module is used to control the valve according to the fine-tuned valve control instructions to complete the flow of fluid into the pipeline system.

[0043] Thirdly, this application also provides a computer device, including: a memory and a processor; the memory stores a computer program, and the processor executes the computer program to implement the condensing unit hot and cold supply pipeline operation method described in the first aspect.

[0044] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the condenser unit hot and cold supply pipeline operation method described in the first aspect.

[0045] According to the specific embodiments provided in this application, the following technical effects are disclosed: The condenser unit heating and cooling supply pipeline operation method provided in this application effectively improves the operating efficiency of the condenser unit heating and cooling supply system through intelligent valve control and real-time data analysis. By precisely adjusting the valve opening and dynamically optimizing the working state of the heat exchanger and cooling pool, heat exchange efficiency can be maximized, energy waste reduced, and the system can be ensured to operate stably under different loads and environmental conditions. Compared with traditional methods, this application has higher flexibility and response speed, significantly improves the system's energy efficiency and reliability, extends equipment service life, and reduces operation and maintenance costs. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 is an overall flowchart of the operation method of the condensing unit's hot and cold supply pipeline provided in an embodiment of this application;

[0048] Figure 2 is a pipeline system diagram of the condensing unit's cooling and heating supply in the condensing unit cooling and heating supply pipeline operation method provided in another embodiment of this application. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] The purpose of this application is to provide a method and system for operating the cold and heat supply pipeline of a condensing unit, which can optimize valve control, improve heat exchange efficiency and system stability according to real-time demand, so as to cope with complex cold and heat supply needs and improve the overall performance and energy efficiency of the system.

[0051] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] Example 1, referring to Figure 1, is an embodiment of this application, providing a method for operating the cold and hot supply pipeline of a condensing unit. This method includes:

[0053] S1: Construct the piping system for the cooling and heating supply of the condensing unit and obtain parameter information in the system piping.

[0054] The piping system for the condensing unit's heating and cooling supply includes: buffer tank A, heat exchanger, heat pump, cooling pool, heat source, heating and cooling users, and circulating pump E.

[0055] There are three heat exchangers: the first heat exchanger B, the intermediate heat exchanger C, and the second heat exchanger D.

[0056] The buffer tank A is used to buffer the pressure of the unit, thereby controlling the pressure of the heat pump.

[0057] The heat pump is connected to the intermediate heat exchanger C, then to the first heat exchanger B, and finally back to the heat pump; the heat pump is used to transport liquid to participate in the heat cycle.

[0058] The hot and cold users return to the hot and cold users after passing through the second heat exchanger D.

[0059] The cooling pool is connected to the circulating pump and then to the intermediate heat exchanger C. The intermediate heat exchanger C is connected to the second heat exchanger D and then back to the cooling pool. In the pipeline connecting the intermediate heat exchanger C to the second heat exchanger D, the pipeline is connected to the pipeline returning to the cooling pool from the second heat exchanger D.

[0060] Each section of the pipeline contains a valve.

[0061] Steam from different pressure units passes through buffer tank A to provide pressure to the heat pump before returning to the unit, thus completing the pressure supply.

[0062] It should be noted that buffer tank A is used to absorb and regulate pressure fluctuations in the system, ensuring that the heat pump pressure remains within a suitable range. Since steam pressure may be affected by load changes or fluctuations in operating conditions, buffer tank A balances pressure fluctuations, preventing excessive or insufficient pressure on the heat pump, thereby extending the heat pump's service life and ensuring its stable operation. The heat pump forms a thermal circulation system through intermediate heat exchanger C and first heat exchanger B, capable of transferring heat from the heat source to heating / cold users, or to the cooling pool. The distribution of heat exchangers effectively distributes the heat transfer task, improving system heat exchange efficiency and optimizing heating / cold supply. Heating / cold users exchange heat with the system through second heat exchanger D, ensuring that their needs are precisely met.

[0063] Valves are installed in each section of the pipeline, allowing for precise adjustment of fluid flow and temperature as needed, thereby achieving precise thermal circulation control. The combination of valve control and real-time data analysis enables the system to dynamically respond to changes in heating and cooling demands.

[0064] The pipeline parameters include liquid temperature and flow rate.

[0065] S2: Based on supply demand, issue valve control commands to the piping system for the cooling and heating supply of the condensing unit.

[0066] The heat cycle includes switching between two modes according to the heating and cooling process requirements when the system needs heating. The first mode is as follows: if slow heating and cooling are required, the control valve connects the second heat exchanger D, the cooling pool, the circulating pump E, and the intermediate heat exchanger C in sequence, returning to the second heat exchanger D to form a closed loop, which is the first loop; the circulating pump E is turned on, and the heat pump passes through the intermediate heat exchanger C to exchange heat with the first loop, and then sends the heat to the second heat exchanger D.

[0067] Second mode: If rapid heating and cooling are required, the circulation pump is turned off, and the control valve connects the second heat exchanger D and the intermediate heat exchanger C in sequence to form a closed loop as the second loop; the heat pump heat passes through the intermediate heat exchanger C and exchanges heat with the second loop, and then sends the heat to the second heat exchanger D.

[0068] In modes requiring rapid heating and cooling, when the heat pump heat needs to be cooled, it exchanges heat with the cooling pool through the intermediate heat exchanger C to complete the cooling process.

[0069] The second heat exchanger D exchanges heat with the cold and hot users to complete the heating supply.

[0070] It's worth noting that the slow temperature rise / fall mode is suitable for scenarios where demand changes gradually. For example, when the indoor temperature needs to be gradually increased or decreased, the system needs to adjust the temperature smoothly to avoid drastic fluctuations and ensure user comfort and system stability. In the first mode, by sequentially connecting the second heat exchanger D, cooling pool, circulating pump E, and intermediate heat exchanger C to form a closed loop, the system can maintain stable heat transfer while the heat pump provides heat, thanks to the operation of the circulating pump E. The water in the cooling pool is first heated by the intermediate heater C before entering the second heat exchanger D for heating. In this mode, slow temperature rise avoids the waste and instability caused by rapid temperature changes. By adjusting the valves and fluid circulation, the system can precisely control the temperature change process.

[0071] The rapid heating and cooling mode is suitable for scenarios requiring quick adjustment of indoor temperature or response to sudden environmental changes. For example, it can rapidly raise or lower the temperature during equipment debugging, emergency situations, or when quickly adapting to fluctuations in the external environment. In the second mode, the system shuts down the circulating pump E and connects the second heat exchanger D and the intermediate heat exchanger C via control valves to form a second loop, achieving relatively rapid heat transfer. In this mode, the heat pump quickly transfers heat to the second heat exchanger D through the intermediate heat exchanger C, directly meeting the rapid heating requirement. Furthermore, when the heat pump needs cooling, it exchanges heat with the intermediate heat exchanger C using a cooling pool, ensuring temperature control and preventing overheating or damage to the heat pump equipment. By intelligently switching between two different modes to adapt to different temperature regulation needs, the system ensures efficient and stable operation under various conditions while precisely controlling the rate of temperature change according to user needs, ensuring comfort and energy efficiency. Simultaneously, the cooling function design in the rapid heating and cooling mode also ensures the safety and stability of the equipment, thereby improving the system's reliability and flexibility.

[0072] When cooling is required, the cooling system connected to the cooling pool operates to cool the cooling pool; the valves are controlled according to the first circuit method, at which time the intermediate heat exchanger C does not exchange heat, the circulating pump E is turned on, the liquid in the cooling pool passes through the second heat exchanger D and exchanges heat with the users of the cooling and heating systems to complete the cooling supply.

[0073] When the system requires cooling, the cooling system in the cooling pool is activated. A control valve isolates the intermediate heat exchanger C (preventing heat exchange), ensuring that the cooling pool liquid directly passes through the second heat exchanger D to exchange heat with the users, completing the cooling process. This design avoids unnecessary heat exchanger involvement during cooling, thereby improving system efficiency.

[0074] Traditional heating and cooling supply systems typically require two completely independent piping and heat exchange systems: one for heating and the other for cooling. While this simplifies meeting different needs, it has the following drawbacks:

[0075] Duplication of equipment and piping: Separate heat exchangers, piping, and circulating pumps are needed for both cooling and heating, leading to equipment redundancy and low utilization. Some equipment is not used for most of the year, resulting in relatively low equipment utilization.

[0076] System waste: With two sets of pipelines and equipment responsible for heating and cooling respectively, the other system may be idle during different seasons or under different demands, leading to equipment downtime and energy waste. For example, during winter heating, the cooling system is shut down; during summer cooling, the heating system is not used.

[0077] By integrating the heating and cooling supply systems into a single system, the goal of efficient equipment utilization can be achieved year-round. This single system can switch between heating and cooling modes as needed, ensuring that the equipment is operational most of the time. Heat exchangers, circulating pumps, and piping can automatically switch operating modes according to seasonal demand, avoiding the waste associated with separately configuring heating and cooling equipment.

[0078] S3: Fine-tune the valve control command using the pipeline parameter information and the valve control command.

[0079] S4: Control the valve according to the fine-tuned valve control command to complete the flow of fluid into the pipeline system.

[0080] Fine-tuning the valve control command includes, during the heat cycle, analyzing the heat exchange efficiency based on the temperature of the liquid transported by the heat pump at the intermediate heat exchanger C and the current flow rate, and controlling the valve opening and closing based on the analysis results.

[0081] If the analysis results indicate low heat exchange efficiency, gradually increase the valve opening; if the analysis results indicate high heat exchange efficiency, gradually decrease the valve opening. During the opening adjustment process, continue to analyze the heat exchange efficiency until the analysis results show that the heat exchange efficiency is matched.

[0082] It's important to note that in a heat pump cycle, changes in liquid flow rate and temperature directly impact heat exchange efficiency. By monitoring these parameters in real time and adjusting valve openings, the system can reduce ineffective energy consumption and avoid heat waste due to low heat exchange efficiency, thus ensuring more efficient energy transfer and utilization. This fine-tuning effectively reduces overheating or overcooling, enabling the system to maintain optimal energy efficiency throughout operation and minimizing unnecessary energy loss. Heat pump systems typically face varying external environmental conditions and load demands (such as changes in ambient temperature and fluctuations in system demand), all of which lead to variations in heat exchange efficiency. Through dynamic valve control adjustments, heat exchange efficiency under different operating conditions can be optimized, ensuring the system automatically adapts to these changes. By adjusting valve openings based on real-time data, the system can better cope with different load variations, thereby maintaining stable performance throughout the entire heat cycle.

[0083] The control method for cooling is similar to that for heating, but the temperature determination is the opposite of that for heating.

[0084] The heat exchange efficiency of the two modes was analyzed separately.

[0085] Let the preset heating time be T0, and the preset target temperature be C0; using the preset heating time as a constraint: T < T0; C0 < C < C0 × α max ;

[0086] Where T represents the predicted heating time to reach C0; C represents the predicted maximum temperature after heating; α max This represents the maximum overtemperature coefficient, 1 < α max ;

[0087] If T≥T0 or C0≥C, the analysis result indicates low heat exchange efficiency; if C≥C0×α max If the conditions are met, the analysis result is that the heat exchange efficiency is high; if the constraints are satisfied, the analysis result is that the heat exchange efficiency is matched.

[0088] Construct an improved neural network, including: an input layer, three hidden layers, and an output layer;

[0089] Three hidden layers are used to analyze the nonlinear relationships of input features in the intermediate heat exchanger C, the second heat exchanger D, and the cooling pool, respectively.

[0090] Let the intermediate heat exchanger correspond to the first hidden layer, the second heat exchanger D correspond to the second hidden layer, and the cooling pool correspond to the third hidden layer;

[0091] In the first mode, the input layer obtains the cooling pool capacity, the current temperature of the cooling pool, the flow rate of the heat pump transport liquid in the intermediate heat exchanger C, and the inflow and outflow temperatures of the heat pump transport liquid in the intermediate heat exchanger C, and packages them as the first input feature; the first input feature passes through the first hidden layer, the third hidden layer, and the second hidden layer in sequence, and is cyclical, and the output layer outputs the prediction result.

[0092] It should be noted that in the first mode, the prediction is performed using a recurrent neural network. Based on the analysis of the intermediate heat exchanger in the first hidden layer of the previous time step, the heat received by the cooling pool is predicted. In the third hidden layer, the liquid temperature is predicted based on the heat received by the cooling pool. In the second hidden layer, the final heat received by the hot and cold users is predicted. This process continues until the next time step is reached. The first parameter (time) is output when the target temperature is reached; the second parameter (maximum temperature) is output when the maximum temperature is reached, and the loop terminates. If no time is output when the maximum temperature is reached, it indicates that the target temperature has not been reached. In this case, the maximum temperature is definitely lower than the target temperature, so there is no need to output the two parameters to determine the "heat exchange efficiency".

[0093] In the second mode, the input layer acquires the flow rate of the heat pump transport liquid in the intermediate heat exchanger C, the inflow temperature of the heat pump transport liquid in the intermediate heat exchanger C, and the outflow temperature of the heat pump transport liquid in the intermediate heat exchanger C, and packages them as the second input feature. The second input feature passes through the first hidden layer and the second hidden layer in sequence and is cyclical, and the output layer outputs the prediction result. Compared with the first mode, there is less analysis of the cooling pool in the cyclic process, but the analysis principle is similar to the algorithm logic of the first mode. This method improves the cyclic path of the cyclic neural network to adapt it to the pipeline supply system, achieving the purpose of adaptive improvement.

[0094] During the loop, when the target temperature is reached, the predicted heating time T is output; when the maximum temperature is reached, the maximum temperature is output, and the loop ends.

[0095] The above-mentioned cyclic prediction process is not only applicable to the heating process, but also to the cooling process of the cooling cycle. A similar technical solution is used to complete the prediction through the third hidden layer.

[0096] It's important to understand that the above prediction process is based on the general current flow rate. Since it's impossible to continuously adjust the valve during normal operation, it's necessary to directly adjust the valve to a suitable position. The control fine-tuning process in this application completes this final positioning. Maintaining a stable flow rate in each loop ensures that the control results better meet expectations.

[0097] On the other hand, this embodiment also provides a condensing unit hot and cold supply pipeline operation system, which includes:

[0098] The data acquisition module is used to construct the piping system for the cooling and heating supply of the condensing unit and to acquire parameter information from the system piping.

[0099] The control module is used to issue valve control commands to the piping system for the cooling and heating supply of the condensing unit according to supply requirements.

[0100] The adjustment module is used to fine-tune the valve control command using the pipeline parameter information and the valve control command.

[0101] The execution module is used to control the valve according to the fine-tuned valve control instructions to complete the flow of fluid into the pipeline system.

[0102] If the above functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0103] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0104] More specific examples of computer-readable media (a non-exhaustive list) include: electrical connections (electronic devices) having one or more wires, portable computer disk drives (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0105] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0106] Example 2, referring to Figure 2, is an embodiment of this application, providing a piping system for the cooling and heating supply of a condensing turbine unit.

[0107] Steam from different pressures / sources is collected in a buffer tank through its respective regulating valves (such as valve 1, valve 12, valve 13, etc.) to adjust the pressure evenly, and then enters the heat pump. The pressure and heat energy carried by the working fluid serve as the driving energy for the heat pump. After releasing the energy, the working fluid returns to the unit through valve 5.

[0108] The heat source enters the heat exchanger through valve 2, releases energy, and returns to the heat source, forming a loop.

[0109] The heat pump output end forms a heat pump circuit through valve 3, intermediate heat exchanger C, and first heat exchanger B.

[0110] The cooling pool, circulating pump E, intermediate heat exchanger C, valve 104, second heat exchanger D, valve 201, and valve 105 constitute a cooling and heating circuit.

[0111] The circulating pump E, the cooling pool, and the second heat exchanger D constitute the cooling circuit.

[0112] When cooling is required, valves 104, 201, and 302 are closed, and valves 105 and 301 are opened. The heat pump heat energy enters the cooling pool through the intermediate heat exchanger C.

[0113] When heating is needed, there are two switching methods. One is the direct supply method, where valves 105 and 301 are closed to shut down the circulating pump of the cooling pool, and valves 104, 201, and 302 are opened. The heat pump heat is directly sent to the second heat exchanger D through the intermediate heat exchanger C.

[0114] The second method is a combined heating system. Valves 105 and 302 are closed, the circulating pump E of the cooling pool is turned on, and valves 104, 201, and 301 are turned on. The intermediate heater C first heats the water in the cooling pool and then it enters the second heat exchanger D for heating.

[0115] When cooling is required, cooling energy is provided through the circuit of the second heat exchanger D. At this time, valves 104, 201, and 301 are opened, and valves 105 and 302 are closed, so that the cooling pool can play a cooling role.

[0116] The fine-tuning process of this method was tested by setting three target heating temperatures and times. Experimental results show that the present invention can achieve valve control under different preset targets.

[0117] The three target temperatures in the experiment were: (35℃, 25 min), (18℃, 30 min), and (29℃, 20 min). The highest (lowest) temperature and the time to reach the target temperature were recorded as follows: (39℃, 24 min), (16℃, 26 min), and (31℃, 20 min). After stabilization, the temperature reached the target temperature in all cases.

[0118] It should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the claims of this application.

Claims

1. A method for operating the hot and cold supply pipeline of a condensing turbine unit, characterized in that, The operation method of the condensing unit's hot and cold supply pipeline includes: Construct a piping system for the cooling and heating supply of the condensing unit and obtain parameter information from the system piping; Based on supply demand, valve control commands are issued to the piping system for the cooling and heating supply of the condensing unit; The valve control command is fine-tuned using the pipeline parameter information and the valve control command. The valve is controlled according to the fine-tuned valve control command to complete the flow of fluid into the pipeline system.

2. The method for operating the condenser unit's hot and cold supply pipeline according to claim 1, characterized in that, The piping system for the cooling and heating supply of the condenser unit includes: buffer tank, heat exchanger, heat pump, cooling pool, heat source, cooling and heating users, and circulating pump; There are three heat exchangers: a first heat exchanger, an intermediate heat exchanger, and a second heat exchanger. The buffer tank is used to buffer the pressure of the unit, thereby controlling the pressure of the heat pump; The heat pump is connected to the intermediate heat exchanger, then to the first heat exchanger, and back to the heat pump; the heat pump is used to transport liquid to participate in the heat cycle. The hot and cold users return to the hot and cold users after passing through the second heat exchanger; The cooling pool is connected to the circulating pump and then to the intermediate heat exchanger. The intermediate heat exchanger is connected to the second heat exchanger and returns to the cooling pool. In the pipeline connecting the intermediate heat exchanger to the second heat exchanger, it is connected to the pipeline returning to the cooling pool from the second heat exchanger. Each section of the pipeline contains a valve.

3. The method for operating the condenser unit's hot and cold supply pipeline according to claim 2, characterized in that, The piping system for the condensing unit's heating and cooling supply also includes: steam from different pressure units passes through the buffer tank to provide pressure to the heat pump, and then returns to the unit to complete the pressure supply.

4. The method for operating the condensing unit's hot and cold supply pipeline according to claim 3, characterized in that, The heat cycle includes switching between two modes according to the heating and cooling process requirements when the system needs heating. In the first mode, if slow heating and cooling are required, the control valve connects the second heat exchanger, the cooling pool, the circulating pump, and the intermediate heat exchanger in sequence, returning to the second heat exchanger to form a closed loop, which is the first loop. The circulating pump is turned on, and the heat pump heat passes through the intermediate heat exchanger to exchange heat with the first loop, and then sends the heat to the second heat exchanger. Second mode: If rapid heating and cooling are required, the circulation pump is turned off, and the control valve connects the second heat exchanger and the intermediate heat exchanger in sequence to form a closed loop, which is the second loop; the heat pump heat passes through the intermediate heat exchanger and exchanges heat with the second loop, and then sends the heat to the second heat exchanger. In modes requiring rapid heating and cooling, when the heat pump heat needs to be cooled, it exchanges heat with the cooling pool through an intermediate heat exchanger to complete the cooling process. The second heat exchanger exchanges heat with the cold and hot users to complete the heating supply.

5. The method for operating the condensing unit's hot and cold supply pipeline according to claim 4, characterized in that, When cooling is required, the cooling system connected to the cooling pool operates to cool the cooling pool; the valves are controlled according to the first circuit method, at which time the intermediate heat exchanger does not exchange heat, the circulating pump is turned on, the liquid in the cooling pool passes through the second heat exchanger and exchanges heat with the users of the cooling and heating systems to complete the cooling supply.

6. The method for operating the condensing unit's hot and cold supply pipeline according to claim 5, characterized in that, The parameters of the pipeline include: liquid temperature and flow rate; Fine-tuning the valve control command includes: during the heat cycle, analyzing the heat exchange efficiency based on the temperature of the liquid transported by the heat pump at the intermediate heat exchanger and the current flow rate, and controlling the valve opening and closing based on the analysis results; If the analysis results indicate low heat exchange efficiency, gradually increase the valve opening; if the analysis results indicate high heat exchange efficiency, gradually decrease the valve opening. During the opening adjustment process, continue to analyze the heat exchange efficiency until the analysis results show that the heat exchange efficiency is matched.

7. The method for operating the condensing unit's hot and cold supply pipeline according to claim 6, characterized in that, The heat exchange efficiency includes: analyzing the heat exchange efficiency for the two modes separately; Let the preset heating time be T0, and the preset target temperature be C0; the preset heating time is used as a constraint: T < T0; C0<C<C0×α max ; Where T represents the predicted heating time to reach C0; C represents the predicted maximum temperature after heating; α max This represents the maximum overtemperature coefficient, 1 < α max ; If T≥T0 or C0≥C, the analysis result indicates low heat exchange efficiency; if C≥C0×α max If the conditions are met, the analysis result is that the heat exchange efficiency is high; if the constraints are satisfied, the analysis result is that the heat exchange efficiency is matched. Construct an improved neural network, including: an input layer, three hidden layers, and an output layer; Three hidden layers are used to analyze the nonlinear relationships of input features in the intermediate heat exchanger, the second heat exchanger, and the cooling pool, respectively. Let the intermediate heat exchanger correspond to the first hidden layer, the second heat exchanger correspond to the second hidden layer, and the cooling pool correspond to the third hidden layer; In the first mode, the input layer obtains the cooling pool capacity, the current temperature of the cooling pool, the flow rate of the heat pump transport liquid in the intermediate heat exchanger, and the inflow and outflow temperatures of the heat pump transport liquid in the intermediate heat exchanger, and packages them as the first input feature; the first input feature passes through the first hidden layer, the third hidden layer, and the second hidden layer in sequence, and is cyclical, and the output layer outputs the prediction result; In the second mode, the input layer obtains the flow rate of the heat pump transport liquid in the intermediate heat exchanger, the inflow temperature and the outflow temperature of the heat pump transport liquid in the intermediate heat exchanger, and packages them as the second input feature; the second input feature passes through the first hidden layer and the second hidden layer in sequence and is cyclical, and the output layer outputs the prediction result; During the loop, when the target temperature is reached, the predicted heating time T is output; when the maximum temperature is reached, the maximum temperature is output, and the loop ends.

8. A condensing unit hot and cold supply pipeline operation system employing the method described in any one of claims 1-7, characterized in that, The condensing unit's hot and cold supply pipeline operation system includes: The data acquisition module is used to construct the piping system for the cooling and heating supply of the condensing unit and to acquire parameter information in the system piping. The control module is used to issue valve control commands to the piping system for the cooling and heating supply of the condensing unit according to supply demand; The adjustment module is used to fine-tune the valve control command using the pipeline parameter information and the valve control command; The execution module is used to control the valve according to the fine-tuned valve control instructions to complete the flow of fluid into the pipeline system.

9. A computer device, comprising: A memory and a processor; the memory stores a computer program, characterized in that the processor executes the computer program to implement the condensing unit hot and cold supply pipeline operation method as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method for operating the condensing unit's hot and cold supply pipelines as described in any one of claims 1-7.

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