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

Abstract

The invention relates to the technical field of supply pipeline input, and discloses a condensing unit cold and hot supply pipeline operation method and system.The condensing unit cold and hot supply pipeline operation method comprises the steps that a condensing unit cold and hot supply pipeline system is built, and parameter information in a system pipeline is obtained; according to the supply requirement, a valve control instruction is issued to a cold and hot supply pipeline system of the condensing unit; finely adjusting the valve control instruction by utilizing the parameter information of the pipeline and the valve control instruction; and valve control is conducted according to the finely-adjusted valve control instruction, and inflow of fluid in the pipeline system is completed. The operation efficiency of the cold and heat supply system of the condensing unit is effectively improved, the heat exchange efficiency can be maximized, energy waste is reduced, and stable operation of the system under different load and environment conditions is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of supply pipeline input, and in particular to a method and system for operating cold and hot supply pipelines of a condensing unit. Background Art

[0002] The heat and cold supply system of condensing units is widely used in the industrial and energy fields, involving the coordinated work of equipment such as heat pumps, heat exchangers and cooling pools. Existing systems often rely on fixed valve settings and simple control strategies, which are difficult to cope with factors such as load fluctuations and environmental changes, resulting in low energy efficiency and poor system stability. Heat exchange efficiency is the key to system performance, but existing methods fail to make full use of real-time data for dynamic optimization. Traditional valve control relies on experience and conventional adjustments, which makes it difficult to accurately match system requirements, and has a slow response, and cannot achieve efficient and intelligent fluid control. Therefore, a technology is needed that can optimize valve control according to real-time needs, improve heat exchange efficiency and system stability, in order to cope with complex heat and cold supply needs and improve the overall performance and energy efficiency of the system. Summary of the invention

[0003] In view of the above-mentioned problems, the present invention is proposed.

[0004] Therefore, the technical problem solved by the present invention is that the existing supply pipeline input method has optimization problems such as slow response, inaccurate temperature control, and equipment waste.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for operating a cold and hot supply pipeline of a condensing unit, comprising: Construct the piping system for the cold and hot supply of the condensing unit and obtain parameter information in the system piping; According to the supply demand, valve control instructions are issued to the piping system for the cold and hot supply of the condensing unit; Using the parameter information of the pipeline and the valve control instruction, fine-tuning the valve control instruction; The valve is controlled according to the fine-tuned valve control instruction to complete the flow of fluid into the pipeline system.

[0006] As a preferred solution of the condensing unit cold and hot supply pipeline operation method of the present invention, wherein: the condensing unit cold and hot supply pipeline system includes a buffer tank, a heat exchanger, a heat pump, a cooling pool, a heat source, a cold and hot user, and a circulating pump; There are three heat exchangers, namely heat exchanger 1, intermediate heat exchanger, and heat exchanger 3; The buffer tank is used to buffer the pressure of the unit, thereby controlling the pressure of the heat pump; After the heat pump is connected to the intermediate heat exchanger, it is connected to the heat exchanger 1 and returns to the heat pump; the heat pump is used to transport liquid to participate in the heat cycle; The cold and hot users return to the cold and hot users after passing through the heat exchanger 3; After the cooling pool is connected to the circulation pump, it is connected to the intermediate heat exchanger, and the intermediate heat exchanger is connected to the heat exchanger 3 back to the cooling pool. In the pipeline connecting the intermediate heat exchanger to the heat exchanger 3, the pipeline is connected to the pipeline from the heat exchanger 3 back to the cooling pool through a pipeline; Among them, any section of the pipeline contains a valve.

[0007] As a preferred scheme of the method for operating the hot and cold supply pipelines of the condensing unit described in the present invention, the hot and cold supply pipeline system of the condensing unit also includes that the steam of different pressure units passes through the buffer tank to provide pressure for the heat pump and then returns to the unit to complete the pressure supply.

[0008] As a preferred solution of the method for operating the cold and hot supply pipeline of the condensing unit of the present invention, the heat cycle includes, when the system needs heating, switching between two modes according to the needs of the heating and cooling process, mode 1: if slow heating and cooling is required, the control valve connects the heat exchanger 3, the cooling pool, the circulation pump, and the intermediate heat exchanger in sequence, and returns to the heat exchanger 3 to form a closed loop as loop 1; the circulation pump is turned on, and the heat pump heat passes through the intermediate heat exchanger, exchanges heat with the loop 1, and sends the heat to the heat exchanger 3; Mode 2: If rapid temperature rise and fall is required, the circulation pump is turned off, and the valve is controlled to connect the heat exchanger 3 and the intermediate heat exchanger in sequence to form a closed loop, which is loop 2; the heat pump heat passes through the intermediate heat exchanger, exchanges heat with the loop 2, and sends the heat to the heat exchanger 3; In a mode where rapid temperature rise and fall is required, when the heat pump heat needs to be cooled, heat is exchanged with the cooling pool through the intermediate heat exchanger to complete the cooling; The heat exchanger 3 exchanges heat with the cold and hot users to complete heating.

[0009] As a preferred scheme of the method for operating the hot and cold supply pipelines of the condensing unit described in the present invention, when cooling is needed, the cooling system connected to the cooling pool works to cool the cooling pool; the valve is controlled in the manner of loop 1, at which time the intermediate heat exchanger does not exchange heat, the circulating pump is turned on, and the liquid in the cooling pool passes through the heat exchanger 3 and exchanges heat with the hot and cold users to complete cooling.

[0010] As a preferred solution of the method for operating the cold and hot supply pipeline of a condensing unit of the present invention, wherein: the parameter information of the pipeline includes liquid temperature and flow rate; Fine-tuning the valve control command includes, when performing the heat cycle, analyzing the heat exchange efficiency according to the temperature of the liquid transported by the heat pump when entering and exiting the intermediate heat exchanger, and the current flow rate, and controlling the size of the valve switch according to the analysis result; If the analysis result shows that the heat exchange efficiency is low, the valve opening degree is gradually increased; if the analysis result shows that the heat exchange efficiency is high, the valve opening degree is gradually decreased; during the opening adjustment process, the heat exchange efficiency analysis is continuously performed until the analysis result shows that the heat exchange efficiency matches.

[0011] As a preferred solution of the method for operating the cold and hot supply pipelines of a condensing unit according to the present invention, the heat exchange efficiency includes analyzing the heat exchange efficiency of the two modes respectively; Assume the preset heating time is T0, the preset target temperature is C0; take the preset heating time as the constraint: T<T0; C0<C<C0×α max ; Where T represents the predicted heating time when reaching C0; C represents the predicted maximum temperature after heating; α max Indicates the maximum over-temperature coefficient, 1<α max ; If T≥T0 or C0≥C, the analysis result is judged to be low heat transfer efficiency; if C≥C0×α max , then the analysis result is judged to be high heat transfer efficiency; if the constraints are met, then the analysis result is judged to be heat transfer efficiency matching; Construct an improved neural network, including: input layer, 3 hidden layers, and output layer; The three hidden layers are used to analyze the nonlinear relationship of the input features in the intermediate heat exchanger, the heat exchanger 3 and the cooling pool respectively; Assume that the intermediate heat exchanger corresponds to hidden layer 1, heat exchanger 3 corresponds to hidden layer 2, and cooling pool corresponds to hidden layer 3; In the mode 1, 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, the inflow temperature and the outflow temperature 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 hidden layer 1, the hidden layer 3, and the hidden layer 2 in sequence, and is circulated, and the output layer outputs the prediction result; In the mode 2, 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 hidden layer 1 and the hidden layer 2 in sequence, and is circulated, and the output layer outputs the prediction result; During the cycle, 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 cycle ends.

[0012] A condensing unit cold and hot supply pipeline operation system using any method of the present invention, characterized in that: The acquisition module builds the piping system for the cold and hot supply of the condensing unit and obtains parameter information in the system piping; The control module issues valve control instructions to the piping system for the cold and hot supply of the condensing unit according to supply requirements; An adjustment module, using the parameter information of the pipeline and the valve control instruction to fine-tune the valve control instruction; The execution module controls the valve according to the fine-tuned valve control instruction to complete the flow of fluid into the pipeline system.

[0013] A computer device comprises: a memory and a processor; the memory stores a computer program, wherein: the processor implements the steps of any one of the methods of the present invention when executing the computer program.

[0014] A computer-readable storage medium stores a computer program, wherein: when the computer program is executed by a processor, the steps of any one of the methods of the present invention are implemented.

[0015] Beneficial effects of the present invention: The method for operating the hot and cold supply pipelines of the condensing unit provided by the present invention effectively improves the operating efficiency of the hot and cold supply system of the condensing unit through intelligent valve control and real-time data analysis. By accurately adjusting the valve opening and dynamically optimizing the working state of the heat exchanger and the cooling pool, the heat exchange efficiency can be maximized, energy waste can be reduced, and the system can be ensured to operate stably under different loads and environmental conditions. Compared with traditional methods, the present invention has higher flexibility and response speed, significantly improves the energy efficiency and reliability of the system, prolongs the service life of the equipment, and reduces operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 An overall flow chart of a method for operating a cold and hot supply pipeline of a condensing unit provided in a first embodiment of the present invention; Figure 2A piping system diagram for hot and cold supply of a condensing unit in a method for operating hot and cold supply piping of a condensing unit provided in a second embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0019] Example 1, reference Figure 1 , which is an embodiment of the present invention, provides a method for operating a cold and hot supply pipeline of a condensing unit, comprising: S1: Construct the piping system for the hot and cold supply of the condensing unit and obtain the parameter information in the system piping.

[0020] The piping system for the cold and hot supply of the condensing unit includes a buffer tank, a heat exchanger, a heat pump, a cooling pool, a heat source, cold and hot users, and a circulating pump.

[0021] There are three heat exchangers, namely heat exchanger 1, intermediate heat exchanger, and heat exchanger 3.

[0022] The buffer tank is used to buffer the pressure of the unit, thereby controlling the pressure of the heat pump.

[0023] After the heat pump is connected to the intermediate heat exchanger, it is connected to the heat exchanger 1 and returns to the heat pump; the heat pump is used to transport liquid to participate in the heat cycle.

[0024] The cold and hot users return to the cold and hot users after passing through the heat exchanger 3.

[0025] After the cooling pool is connected to the circulation pump, it is connected to the intermediate heat exchanger, and the intermediate heat exchanger connects the heat exchanger 3 back to the cooling pool. In the pipeline connecting the intermediate heat exchanger to the heat exchanger 3, the pipeline is connected to the pipeline from the heat exchanger 3 back to the cooling pool through a pipeline.

[0026] Among them, any section of the pipeline contains a valve.

[0027] The steam from the different pressure units passes through the buffer tank to provide pressure for the heat pump and then returns to the unit to complete the pressure supply.

[0028] It should be said that the buffer tank is used to absorb and adjust the pressure fluctuations in the system to ensure that the pressure of the heat pump remains within an appropriate range. Since the steam pressure may be affected by load changes or fluctuations in operating conditions, the buffer tank balances the pressure fluctuations to avoid excessive pressure or insufficient pressure on the heat pump, thereby extending the service life of the heat pump and ensuring its stable operation. The heat pump forms a heat circulation system through the intermediate heat exchanger and the heat exchanger 1, which can transfer heat from the heat source to the cold and hot users, or transfer heat to the cooling pool. The distribution of heat exchangers can effectively share the heat transfer task, improve the system heat exchange efficiency, and optimize the cold and hot supply. The cold and hot users exchange heat with the system through the heat exchanger 3, so that the needs of the cold and hot users can be accurately met.

[0029] Valves are set in each section of the pipeline to allow precise adjustment of fluid flow and temperature according to demand, thereby achieving precise thermal cycle control. Valve control combined with real-time data analysis enables the system to dynamically respond to changes in cooling and heating demand.

[0030] The parameter information of the pipeline includes liquid temperature and flow rate.

[0031] S2: According to the supply demand, a valve control instruction is issued to the piping system for the cold and hot supply of the condensing unit.

[0032] The thermal cycle includes, when the system needs heating, switching between two modes according to the needs of the heating and cooling process, Mode 1: If slow heating and cooling is required, the control valve connects the heat exchanger 3, the cooling pool, the circulation pump, and the intermediate heat exchanger in sequence, and returns to the heat exchanger 3 to form a closed loop, as loop 1; the circulation pump is turned on, and the heat pump heat passes through the intermediate heat exchanger, exchanges heat with the loop 1, and sends the heat to the heat exchanger 3.

[0033] Mode 2: If rapid temperature increase or decrease is required, the circulation pump is turned off, and the control valve is used to connect the heat exchanger 3 and the intermediate heat exchanger in sequence to form a closed loop, which serves as loop 2; the heat from the heat pump passes through the intermediate heat exchanger, exchanges heat with the loop 2, and sends the heat to the heat exchanger 3.

[0034] In a mode requiring rapid temperature rise and fall, when the heat pump heat needs to be cooled, heat is exchanged with the cooling pool through the intermediate heat exchanger to complete the cooling.

[0035] The heat exchanger 3 exchanges heat with the cold and hot users to complete heating.

[0036] It should be said that the slow heating and cooling 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 in the system and ensure the comfort of the user and the stability of the system. In mode 1, by connecting the heat exchanger 3, the cooling pool, the circulating pump and the intermediate heat exchanger in sequence to form a closed loop, the heat pump can be started while the heat is provided by the heat pump to maintain a stable transfer of heat. The water in the cooling pool is first heated by the intermediate heater and then enters the heat exchanger 3 for heating. In this mode, slow heating can avoid the waste and instability caused by too rapid temperature changes. By adjusting the circulation of valves and fluids, the system can accurately control the temperature change process.

[0037] The rapid heating and cooling mode is suitable for scenarios where the indoor temperature needs to be adjusted quickly or to cope with sudden changes in environmental requirements. For example, the temperature can be quickly raised or lowered during equipment commissioning, emergency needs, or rapid adaptation to external environmental fluctuations. In mode 2, the system turns off the circulation pump and connects the heat exchanger 3 and the intermediate heat exchanger through the control valve to form loop 2 to achieve relatively rapid heat transfer. In this way, the heat pump quickly delivers heat to the heat exchanger 3 through the action of the intermediate heat exchanger, directly meeting the rapid heating demand. In addition, when the heat pump needs to be cooled, the heat exchange is carried out with the help of the cooling pool and the intermediate heat exchanger to ensure the temperature control of the heat pump and avoid overheating or damage to the heat pump equipment. By intelligently switching between two different modes to adapt to different temperature adjustment requirements, it is ensured that the system can operate efficiently and stably under different conditions, and the temperature change rate can be accurately controlled according to user needs to ensure comfort and energy saving effects. At the same time, the cooling function design in the rapid heating and cooling mode also ensures the safety and stability of the equipment, thereby improving the reliability and flexibility of the system.

[0038] When cooling is needed, the cooling system connected to the cooling pool starts working to cool the cooling pool; the valve is controlled in the manner of loop 1, at which time the intermediate heat exchanger does not exchange heat, the circulating pump is turned on, and the liquid in the cooling pool passes through the heat exchanger 3 and exchanges heat with the cold and hot users to complete cooling.

[0039] Furthermore, when the system needs cooling, the cooling system in the cooling pool is started, and the intermediate heat exchanger is isolated by controlling the valve (no heat exchange occurs), ensuring that the cooling pool liquid directly passes through the heat exchanger 3, exchanges heat with the cold and hot users, and completes the cooling process. This design avoids unnecessary participation of the heat exchanger in the cooling process, thereby improving the working efficiency of the system.

[0040] Traditional hot and cold supply systems usually require the design of two completely independent pipelines and heat exchange systems: one for heating and the other for cooling. Although this can easily meet different needs, it has the following disadvantages: Duplication of equipment and pipelines: Independent heat exchangers, pipelines, circulation pumps and other equipment are required for cooling and heating, resulting in redundant equipment and low utilization. Some equipment is not involved in work for most of the year, so the utilization rate of the equipment is relatively low.

[0041] System waste: Two sets of pipes and equipment are responsible for heating and cooling respectively, which means that in different seasons or with different demands, the other system may be idle, resulting in idle equipment and energy waste. For example, when heating in winter, the cooling system is disabled; when cooling in summer, the heating system is not enabled.

[0042] By combining the hot and cold supply systems into one system, the goal of efficient use of equipment can be achieved throughout the year. One system can switch between heating and cooling modes as needed, ensuring that the equipment is in working condition most of the time. The heat exchanger, circulation pump and pipeline can automatically switch working modes according to demand in different seasons, avoiding the waste caused by separate heating and cooling equipment.

[0043] S3: fine-tuning the valve control instruction using the parameter information of the pipeline and the valve control instruction; performing valve control according to the fine-tuned valve control instruction to complete the inflow of fluid into the pipeline system.

[0044] Fine-tuning the valve control command includes analyzing the heat exchange efficiency according to the temperature of the liquid transported by the heat pump when entering and exiting the intermediate heat exchanger, and the current flow rate during the thermal cycle, and controlling the size of the valve switch according to the analysis results.

[0045] If the analysis result shows that the heat exchange efficiency is low, the valve opening degree is gradually increased; if the analysis result shows that the heat exchange efficiency is high, the valve opening degree is gradually decreased; during the opening adjustment process, the heat exchange efficiency analysis is continuously performed until the analysis result shows that the heat exchange efficiency matches.

[0046] It should be said that in the heat pump cycle, changes in liquid flow and temperature will directly affect the heat exchange effect. By monitoring these parameters in real time and adjusting the valve opening, the system can reduce ineffective energy consumption and avoid heat waste when the heat exchange efficiency is low, thereby ensuring that energy is transferred and utilized more efficiently. This fine-tuning can effectively reduce the phenomenon of overheating or overcooling, so that the system can always maintain optimal energy efficiency during operation and reduce unnecessary energy loss. Heat pump systems are usually faced with different external environmental conditions and load requirements (such as changes in external temperature, fluctuations in system demand, etc.), which will lead to changes in heat exchange efficiency. By dynamically fine-tuning valve control, the heat exchange efficiency under different working conditions can be optimized to ensure that the system can automatically adapt to these changes. By adjusting the valve opening according to real-time data, the system can better cope with different load changes, thereby maintaining stable performance throughout the thermal cycle.

[0047] Among them, the control method for cooling is similar to that for heating, but the judgment of temperature is opposite to that of the heating scheme.

[0048] Furthermore, the heat exchange efficiency is analyzed for the two modes respectively; the preset heating time is set as T0, the preset target temperature is set as C0; the preset heating time is used as a constraint: T<T0; C0<C<C0×α max ; Where T represents the predicted heating time when reaching C0; C represents the predicted maximum temperature after heating; α max Indicates the maximum over-temperature coefficient, 1<α max .

[0049] If T≥T0 or C0≥C, the analysis result is judged to be low heat transfer efficiency; if C≥C0×α max , then the analysis result is judged to be high heat transfer efficiency; if the constraints are met, then the analysis result is judged to be heat transfer efficiency matching.

[0050] Construct an improved neural network, including: input layer, 3 hidden layers, and output layer.

[0051] The three hidden layers are used to analyze the nonlinear relationship of the input features in the intermediate heat exchanger, the heat exchanger 3 and the cooling pool respectively.

[0052] Assume that the intermediate heat exchanger corresponds to hidden layer 1, the heat exchanger 3 corresponds to hidden layer 2, and the cooling pool corresponds to hidden layer 3.

[0053] In mode 1, 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, the inflow temperature and the outflow temperature 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 hidden layer 1, hidden layer 3, hidden layer 2 in sequence, and is circulated, and the output layer outputs the prediction result.

[0054] It should be said that in mode 1, the prediction completed by the recurrent neural network predicts the heat obtained by the cooling pool through the analysis of the intermediate heat exchanger in the hidden layer 1 at the previous moment. In the hidden layer 3, the temperature of the liquid is predicted based on the heat obtained by the cooling pool, and the heat finally obtained by the cold and hot users is predicted in the hidden layer 2. And so on, the situation at the next moment is obtained. When the target temperature is reached, the first parameter (time) is output; when the maximum temperature is reached, the output of the second parameter (maximum temperature) is completed, and the cycle is terminated at the same time. If the time is not output when the maximum temperature is reached, it means that the target temperature has not been reached. At this time, the maximum temperature must be lower than the target temperature, so there is no need to output two parameters to judge the "heat exchange efficiency".

[0055] In the mode 2, 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 hidden layer 1 and the hidden layer 2 in turn, and circulates, and the output layer outputs the prediction result. Compared with mode 1, the analysis of the cooling pool is reduced during the circulation process, but the analysis principle is similar to the algorithm logic of mode 1. This method improves the circulation path of the circulation god network to adapt it to the system supplied by the pipeline, thereby achieving the purpose of adaptability improvement.

[0056] During the cycle, 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 cycle ends.

[0057] The above cycle prediction process is not only applicable to the heating process, but also to the refrigeration process of the cooling cycle, and a similar technical solution is still used to complete the prediction through the hidden layer 3.

[0058] It should be noted that the above prediction process is for the general current flow rate. Because it is impossible to adjust the valve continuously during normal operation, it is necessary to directly adjust the valve to a suitable position. The control fine-tuning process of the present invention is to complete the final positioning. Controlling the flow rate in each current loop at a stable level can make the control result more in line with expectations.

[0059] On the other hand, this embodiment also provides a condensing unit cold and hot supply pipeline operation system, which includes: The acquisition module constructs the piping system for the cold and hot supply of the condensing unit and obtains parameter information in the system pipelines.

[0060] The control module issues valve control instructions to the piping system for the cold and hot supply of the condensing unit according to supply demand.

[0061] The adjustment module uses the parameter information of the pipeline and the valve control instruction to fine-tune the valve control instruction.

[0062] The execution module controls the valve according to the fine-tuned valve control instruction to complete the flow of fluid into the pipeline system.

[0063] If the above functions are implemented in the form of 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 the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.

[0064] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0065] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0066] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0067] Example 2, reference Figure 2 , as an embodiment of the present invention, provides a piping system for hot and cold supply of a condensing unit.

[0068] Steam from units with different pressures / sources are collected in the buffer tank to adjust the uniform pressure through their respective regulating valves (such as valve 1, valve 12, valve 13, etc.), and then enter the heat pump. The pressure and heat energy carried by the working fluid are used as the driving energy of the heat pump to drive the heat pump. The working fluid after releasing the energy returns to the unit through valve 5.

[0069] The heat source passes through valve 2 pipeline, enters the heat exchanger, releases energy and returns to the heat source, forming a loop.

[0070] The heat output end of the heat pump forms a heat pump circuit through valve 3, intermediate heat exchanger and heat exchanger 1.

[0071] The cooling tank, the circulating pump, the intermediate heat exchanger, the valve 104, the heat exchanger 3, the valve 201 and the valve 105 constitute a cooling and heating circuit.

[0072] The circulation pump, cooling tank and heat exchanger 3 form a cooling circuit.

[0073] When cooling is required, valves 104, 201, and 302 are closed, valves 105 and 301 are opened, and heat energy from the heat pump enters the cooling pool through the intermediate heat exchanger.

[0074] When heating is needed, there are two switching modes. One is the direct supply mode, which is to close 105 and 301, close the circulation pump of the cooling pool, open valves 104, 201, and 302, and the heat from the heat pump is directly sent to the heat exchanger 3 through the intermediate heat exchanger.

[0075] The second is the combined supply mode, which is to close 105 and 302, open the circulation pump of the cooling pool, open valves 104, 201, and 301, and the intermediate heater first heats the water in the cooling pool and then enters the heat exchanger 3 for heating.

[0076] When cooling is required, cold energy is provided through the circuit of the heat exchanger 3. At this time, valves 104, 201, and 301 are opened, and valves 105 and 302 are closed, and the cooling pool plays a cooling role.

[0077] By presetting three heating target temperatures and target times, the fine-tuning process of the method is tested respectively. The experimental results show that the present invention can complete valve control under different preset targets.

[0078] The three target temperatures of the experiment are: (35°C, 25min) (18°C, 30min) (29°C, 20min). The highest (lowest) temperature and the time to reach the target temperature recorded in the experimental results are: (39°C, 24min) (16°C, 26min) (31°C, 20min). After stabilization, the temperature reached the target temperature.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for operating a cold and hot supply pipeline of a condensing unit, characterized in that: include: Construct the piping system for the hot and cold supply of the condensing unit and obtain parameter information in the system piping; According to the supply demand, valve control instructions are issued to the piping system for the cold and hot supply of the condensing unit; Using the parameter information of the pipeline and the valve control instruction, fine-tuning the valve control instruction; The valve is controlled according to the fine-tuned valve control instruction to complete the flow of fluid into the pipeline system.

2. The method for operating the cold and hot supply pipelines of a condensing unit according to claim 1, characterized in that: The piping system for the cold and hot supply of the condensing unit includes a buffer tank, a heat exchanger, a heat pump, a cooling pool, a heat source, cold and hot users, and a circulating pump; There are three heat exchangers, namely heat exchanger 1, intermediate heat exchanger, and heat exchanger 3; The buffer tank is used to buffer the pressure of the unit, thereby controlling the pressure of the heat pump; After the heat pump is connected to the intermediate heat exchanger, it is connected to the heat exchanger 1 and returns to the heat pump; the heat pump is used to transport liquid to participate in the heat cycle; The cold and hot users return to the cold and hot users after passing through the heat exchanger 3; After the cooling pool is connected to the circulation pump, it is connected to the intermediate heat exchanger, and the intermediate heat exchanger is connected to the heat exchanger 3 back to the cooling pool. In the pipeline connecting the intermediate heat exchanger to the heat exchanger 3, the pipeline is connected to the pipeline from the heat exchanger 3 back to the cooling pool through a pipeline; Among them, any section of the pipeline contains a valve.

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

4. The method for operating the cold and hot supply pipelines of a condensing unit according to claim 3, characterized in that: The heat cycle includes, when the system needs heating, switching between two modes according to the needs of the heating and cooling process, Mode 1: if slow heating and cooling is required, the control valve connects the heat exchanger 3, the cooling pool, the circulation pump, and the intermediate heat exchanger in sequence, and returns to the heat exchanger 3 to form a closed loop, as loop 1; the circulation pump is turned on, the heat pump heat passes through the intermediate heat exchanger, exchanges heat with the loop 1, and sends the heat to the heat exchanger 3; Mode 2: If rapid temperature rise and fall is required, the circulation pump is turned off, and the valve is controlled to connect the heat exchanger 3 and the intermediate heat exchanger in sequence to form a closed loop, which is loop 2; the heat pump heat passes through the intermediate heat exchanger, exchanges heat with the loop 2, and sends the heat to the heat exchanger 3; In a mode where rapid temperature rise and fall is required, when the heat pump heat needs to be cooled, heat is exchanged with the cooling pool through the intermediate heat exchanger to complete the cooling; The heat exchanger 3 exchanges heat with the cold and hot users to complete heating.

5. The method for operating the cold and hot supply pipelines of a condensing unit according to claim 4, characterized in that: When cooling is needed, the cooling system connected to the cooling pool starts working to cool the cooling pool; the valve is controlled in the manner of loop 1, at which time the intermediate heat exchanger does not exchange heat, the circulating pump is turned on, and the liquid in the cooling pool passes through the heat exchanger 3 and exchanges heat with the cold and hot users to complete cooling.

6. The method for operating the cold and hot supply pipelines of a condensing unit according to claim 5, characterized in that: The parameter information of the pipeline includes liquid temperature and flow rate; Fine-tuning the valve control command includes, when performing the heat cycle, analyzing the heat exchange efficiency according to the temperature of the liquid transported by the heat pump when entering and exiting the intermediate heat exchanger, and the current flow rate, and controlling the size of the valve switch according to the analysis result; If the analysis result shows that the heat exchange efficiency is low, the valve opening degree is gradually increased; if the analysis result shows that the heat exchange efficiency is high, the valve opening degree is gradually decreased; during the opening adjustment process, the heat exchange efficiency analysis is continuously performed until the analysis result shows that the heat exchange efficiency matches.

7. The method for operating the cold and hot supply pipelines of a condensing unit according to claim 6, characterized in that: The heat exchange efficiency includes analyzing the heat exchange efficiency of the two modes respectively; Assume the preset heating time is T0, the preset target temperature is C0; take the preset heating time as the constraint: T<T0; C0<C<C0×α max ; Where T represents the predicted heating time when C0 is reached; C represents the predicted maximum temperature after heating; α max Indicates the maximum over-temperature coefficient, 1<α max ; If T≥T0 or C0≥C, the analysis result is judged to be low heat transfer efficiency; if C≥C0×α max , then the analysis result is judged to be high heat transfer efficiency; if the constraints are met, then the analysis result is judged to be heat transfer efficiency matching; Construct an improved neural network, including: input layer, 3 hidden layers, and output layer; The three hidden layers are used to analyze the nonlinear relationship of the input features in the intermediate heat exchanger, the heat exchanger 3 and the cooling pool respectively; Assume that the intermediate heat exchanger corresponds to hidden layer 1, the heat exchanger 3 corresponds to hidden layer 2, and the cooling pool corresponds to hidden layer 3; In the mode 1, 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, the inflow temperature and the outflow temperature 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 hidden layer 1, the hidden layer 3, and the hidden layer 2 in sequence, and is circulated, and the output layer outputs the prediction result; In the mode 2, 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 hidden layer 1 and the hidden layer 2 in sequence, and is circulated, and the output layer outputs the prediction result; During the cycle, 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 cycle ends.

8. A condensing unit cold and hot supply pipeline operation system using the method according to any one of claims 1 to 7, characterized in that: The acquisition module builds the piping system for the cold and hot supply of the condensing unit and obtains parameter information in the system piping; The control module issues valve control instructions to the piping system for the cold and hot supply of the condensing unit according to supply requirements; An adjustment module, using the parameter information of the pipeline and the valve control instruction to fine-tune the valve control instruction; The execution module controls the valve according to the fine-tuned valve control instruction 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, wherein the processor implements the steps of any method as claimed in claim 1 when executing the computer program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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