Dynamic regulation and control system and method for multi-path shunting heat exchanger

Abstract

The invention discloses a dynamic regulation and control system and method for a multi-path shunting heat exchanger, and relates to the field of light industry refrigeration equipment.The system comprises a sensing unit and a control unit; the sensing unit is connected with the control unit; the sensing unit is arranged on a flow path of the multi-path shunting heat exchanger; and the control unit is used for dynamically adjusting the flow regulating valves of the flow paths in the multi-path shunting heat exchanger in real time based on the data acquired by the sensing unit. Through precise control and dynamic adjustment, the problems of uneven flow distribution, slow response and the like in the prior art can be solved, and the heat exchange efficiency of the heat exchanger and the equipment performance are improved.

Description

Technical Field

[0001] The present application relates to the field of light industrial refrigeration equipment, and in particular to a dynamic control system and method for a multi-path split heat exchanger. Background Art

[0002] Copper tube fin heat exchangers are widely used in refrigeration, heating and other fields. However, the diversion devices of existing copper tube fin heat exchangers have problems such as uneven diversion, slow response, and lack of intelligent adjustment, which affect the heat exchange efficiency and equipment performance. Summary of the Invention

[0003] The purpose of this application is to provide a dynamic control system and method for a multi-way split heat exchanger, so as to solve the problems of uneven splitting and slow response existing in the prior art through precise control and dynamic adjustment, and improve the heat exchange efficiency and equipment performance of the heat exchanger.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] In a first aspect, the present application provides a dynamic control system for a multi-path split heat exchanger, comprising: a sensing unit and a control unit;

[0006] The sensing unit is connected to the control unit; the sensing unit is arranged on the flow path of the multi-way branch heat exchanger; the control unit is used to perform real-time dynamic adjustment on the flow regulating valves of each flow path in the multi-way branch heat exchanger based on the data obtained by the sensing unit.

[0007] Optionally, the sensing unit includes: a temperature sensing device and a pressure detection device;

[0008] The temperature sensing device and the pressure detection device are both connected to the control unit;

[0009] The pressure detection device is used to obtain the pressure data of each flow path outlet in real time; the temperature sensing device is used to obtain the temperature data of each flow path outlet in real time.

[0010] Optionally, the temperature sensing device is a temperature sensor; and the pressure detection device is a pressure sensor.

[0011] Optionally, the sensing unit further comprises: a flow sensor; the flow sensor is connected to the control unit;

[0012] The flow sensor is used to obtain the flow rate of each flow path outlet in real time.

[0013] In a second aspect, the present application provides a method for dynamic control of a multi-path split heat exchanger applied to the above system, the method comprising:

[0014] Real-time acquisition of pressure and temperature data at each outlet of a multi-channel split heat exchanger;

[0015] converting the pressure data at the outlet of each flow path into saturation temperature data;

[0016] determining a temperature difference between the saturation temperature data and the temperature data to obtain a temperature deviation of each flow path;

[0017] Determine whether the fluctuation range of the temperature deviation of each flow path is within a set range, and obtain a first determination result;

[0018] When the first judgment result is yes, no processing is performed;

[0019] When the first judgment result is no, the opening of the corresponding flow control valve is controlled based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range.

[0020] Optionally, controlling the opening of the flow control valve based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range includes:

[0021] Determine whether the temperature difference of the flow path corresponding to the fluctuation range not being within the set range is greater than or equal to the set value, and obtain a second determination result;

[0022] When the second judgment result is yes, increasing the opening of the flow control valve by n steps;

[0023] When the second judgment result is negative, the opening of the flow control valve is reduced by n steps.

[0024] Optionally, controlling the opening of the flow control valve based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range includes:

[0025] Taking the temperature difference of the middle flow path as the middle value, and determining the difference between the temperature difference of the flow path corresponding to the fluctuation range not within the set range and the middle value;

[0026] Determine whether the difference is greater than or equal to a set value, and obtain a third determination result;

[0027] When the third judgment result is yes, increasing the opening of the flow control valve by n steps;

[0028] When the third judgment result is negative, the opening of the flow control valve is reduced by n steps.

[0029] Optionally, the set value is 2°C.

[0030] Optionally, the maximum opening of the flow regulating valve is 500 steps.

[0031] Optionally, it is characterized in that the setting range is [-1°C, +1°C].

[0032] According to the specific embodiments provided in this application, this application has the following technical effects:

[0033] The present application provides a dynamic control system and method for a multi-path diversion heat exchanger. By adopting a sensing unit and a control unit, the flow control valves of each flow path are dynamically adjusted in real time, thereby achieving precise diversion of the liquid, thereby solving the problems of uneven diversion and slow response existing in the prior art, and improving the heat exchange efficiency and equipment performance (such as operational stability) of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic structural diagram of a dynamic control system for a multi-channel split heat exchanger provided in one embodiment of the present application;

[0036] Figure 2 A schematic diagram of the control flow of a dynamic control system for a multi-channel split heat exchanger provided in one embodiment of the present application;

[0037] Figure 3 A schematic flow chart of a method for dynamic control of a multi-path split heat exchanger provided in one embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0040] In an exemplary embodiment, the present application provides a multi-way split heat exchanger dynamic control system, including: a sensing unit and a control unit. Figure 1As shown, the control unit can be a control unit motherboard, which integrates a high-performance processor and storage device to run intelligent control software corresponding to the dynamic control method of the multi-channel split heat exchanger described below. In the multi-channel split heat exchanger (hereinafter referred to as the heat exchanger), the splitter controls each flow path through a flow control valve.

[0041] The sensing unit is connected to the control unit. The sensing unit is disposed on a flow path of the multi-path split heat exchanger. The control unit is configured to dynamically adjust the flow control valves of each flow path in the multi-path split heat exchanger in real time based on data acquired by the sensing unit.

[0042] The sensing unit may include: a temperature sensing device, a pressure detection device and a flow sensor.

[0043] The temperature sensing device, the flow sensor and the pressure detection device are all connected to the control unit.

[0044] The pressure detection device is used to obtain real-time pressure data at each flow path outlet. The flow sensor is used to obtain real-time flow rate data at each flow path outlet. The temperature sensing device is used to obtain real-time temperature data at each flow path outlet. Preferably, the temperature sensing device is a temperature sensor. The pressure detection device is a pressure sensor.

[0045] For example, sensors are deployed at key locations of copper tube fin heat exchangers to form a sensor network to ensure the comprehensiveness and accuracy of data. Figure 1 As shown, a temperature sensing device and a pressure detection device are installed at each branch outlet.

[0046] The diverter valve (i.e. flow control valve) is designed with multiple independent control channels so that each flow channel is equipped with a high-precision flow control device. Figure 1 The red arrow in the figure refers to the electronic flow control valve. Figure 1 As shown, an electronic flow control valve is installed at the inlet end of the heat exchanger and the outlet end of the splitter.

[0047] Based on the above structure, the specific implementation process of the multi-channel split heat exchanger dynamic control system provided by this application can be described from four levels: intelligent perception layer, dynamic adjustment layer, intelligent control layer and optimization feedback layer.

[0048] (1) Intelligent perception layer.

[0049] High-precision temperature sensors, pressure sensors, and flow sensors are arranged on the copper tubes and fins of the heat exchanger to collect liquid temperature, pressure, and flow data in real time.

[0050] The control unit converts the pressure of each flow path outlet fed back by the pressure sensor into the corresponding saturation temperature, wherein the pressure is converted into the saturation temperature based on physical properties.

[0051] The temperature detected by the temperature sensor is subtracted from the saturation temperature corresponding to the pressure sensor to obtain the temperature difference, which is recorded as △T. If the fluctuation range of the temperature difference △T at the outlet of each flow path is within the set range (for example, [-1℃, +1℃]), it is considered that the temperature of all flow paths is equal. At this time, the flow control valve does not move. The larger the temperature difference △T, the larger the opening amplitude of the flow control valve on this flow path. Generally, the flow control valve uses the number of steps to record the opening, which can be up to 500 steps. Based on this, if the fluctuation range of the temperature difference △T at the outlet of a certain flow path is not within the set range, there are two ways to deal with it:

[0052] The first method determines whether the temperature difference ΔT at the outlet of a particular flow path is greater than or equal to a set value (e.g., ±2°C). If yes, increase the opening of the flow control valve by n steps. If no, decrease the opening of the flow control valve by n steps. For example, n = 3.

[0053] The second type: Figure 2 As shown, the temperature difference of the middle flow path is taken as the middle value, and the difference between the temperature difference of the flow path corresponding to the fluctuation range not within the set range and the middle value is determined. It is determined whether the difference is greater than or equal to the set value. If so, the opening of the flow control valve is increased by n steps. Otherwise, the opening of the flow control valve is decreased by n steps.

[0054] (2) Dynamic adjustment layer.

[0055] A new type of flow control valve can be used, which can quickly and accurately adjust the flow of each liquid according to the instructions of the intelligent control layer.

[0056] (3) Intelligent control layer.

[0057] In the control unit, advanced control algorithms are used, combined with data collected by the sensing unit, to calculate and optimize the liquid distribution plan in real time.

[0058] (4) Optimize the feedback layer.

[0059] A feedback mechanism is established to compare actual operating data with the data obtained by the control in the intelligent control layer, and continuously optimize the control strategy. The optimized control strategy is not only used to control the valve opening, but also to adjust and control the sensor unit.

[0060] In another exemplary embodiment of the present application, in order to improve the efficiency and accuracy of data collection and processing, the software architecture of the intelligent control software embedded in the control unit may include:

[0061] Data acquisition module: responsible for the collection and preprocessing of sensor data.

[0062] Control algorithm module: realizes precise control of diverter valve and optimizes liquid distribution.

[0063] Feedback optimization module: Continuously adjusts control strategies by comparing actual data with model predictions.

[0064] The workflow of the above three modules is as follows:

[0065] Data acquisition: Sensors collect temperature, pressure and flow data in real time.

[0066] Data processing: The control unit analyzes and processes the collected data.

[0067] Diversion control: According to the processing results, control the multi-way flow control valve to adjust the liquid flow.

[0068] Feedback optimization: Feedback actual operating data to the control unit to optimize the control strategy.

[0069] In summary, this application utilizes high-precision sensors and intelligent control algorithms to achieve precise liquid diversion and improve heat exchange efficiency. The dynamic adjustment layer allows for rapid response to control commands, timely adjusting liquid flow to adapt to changing operating conditions. Furthermore, by incorporating a feedback mechanism, continuous system optimization can be ensured, improving operational stability and reliability.

[0070] Based on the same inventive concept, the embodiment of the present application also provides a method for dynamic control of a multi-way split heat exchanger applied to the above system. The method is executed by a computer device, specifically a computer device such as a terminal or a server, or a terminal and a server. In the embodiment of the present application, the method is described by taking the application of the method to the server as an example. Figure 3 As shown, the method includes:

[0071] Step 100: Acquire in real time the pressure data and temperature data of each flow outlet in the multi-flow split heat exchanger.

[0072] Step 101: Convert the pressure data at each flow path outlet into saturation temperature data.

[0073] Step 102: Determine the temperature difference between the saturation temperature data and the temperature data to obtain the temperature deviation of each flow path.

[0074] Step 103 : Determine whether the fluctuation range of the temperature deviation of each flow path is within a set range, and obtain a first determination result.

[0075] Step 104: When the first judgment result is yes, no processing is performed.

[0076] Step 105 : When the first judgment result is no, controlling the opening of the corresponding flow control valve based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range.

[0077] Corresponding to the above description, the implementation process of step 105 can be implemented in the following two ways.

[0078] The first one:

[0079] It is determined whether the temperature difference of the flow path corresponding to the fluctuation range not being within the set range (eg, [-1°C, +1°C]) is greater than or equal to a set value (eg, ±2°C) to obtain a second judgment result.

[0080] When the second judgment result is yes, the opening of the flow control valve is increased by n steps.

[0081] When the second judgment result is negative, the opening of the flow control valve is reduced by n steps.

[0082] The second type:

[0083] The temperature difference of the middle flow path is taken as the middle value, and the difference between the temperature difference of the flow path corresponding to the fluctuation range not being within the set range and the middle value is determined.

[0084] It is determined whether the difference is greater than or equal to a set value (eg, ±2° C.) to obtain a third determination result.

[0085] When the third judgment result is yes, the opening of the flow control valve is increased by n steps.

[0086] When the third judgment result is negative, the opening of the flow control valve is reduced by n steps, for example, n=3.

[0087] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0088] In an exemplary embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0089] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0090] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (RRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0091] The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may include, but are not limited to, general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic units, data processing logic units based on quantum computing, and the like.

[0092] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core concept of this application. At the same time, for those skilled in the art, based on the concept of this application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A dynamic control system for a multi-channel split heat exchanger, characterized in that: include: Sensing unit and control unit; The sensing unit is connected to the control unit; The sensing unit is arranged on the flow path of the multi-path split heat exchanger; The control unit is used to dynamically adjust the flow control valves of each flow path in the multi-path split heat exchanger in real time based on the data acquired by the sensor unit.

2. The multi-channel split heat exchanger dynamic control system according to claim 1, characterized in that: The sensing unit includes: a temperature sensing device and a pressure detection device; The temperature sensing device and the pressure detection device are both connected to the control unit; The pressure detection device is used to obtain the pressure data of each flow path outlet in real time; the temperature sensing device is used to obtain the temperature data of each flow path outlet in real time.

3. The multi-channel split heat exchanger dynamic control system according to claim 2, characterized in that: The temperature sensing device is a temperature sensor; the pressure detecting device is a pressure sensor.

4. The multi-channel split heat exchanger dynamic control system according to claim 2, characterized in that: The sensing unit further comprises: a flow sensor; the flow sensor is connected to the control unit; The flow sensor is used to obtain the flow rate of each flow path outlet in real time.

5. A dynamic control method for a multi-channel split heat exchanger, characterized in that: The multi-way split heat exchanger dynamic control method is applied to the multi-way split heat exchanger dynamic control system according to any one of claims 1 to 4; the method comprises: Real-time acquisition of pressure and temperature data at each outlet of a multi-channel split heat exchanger; converting the pressure data at the outlet of each flow path into saturation temperature data; determining a temperature difference between the saturation temperature data and the temperature data to obtain a temperature deviation of each flow path; Determine whether the fluctuation range of the temperature deviation of each flow path is within a set range, and obtain a first determination result; When the first judgment result is yes, no processing is performed; When the first judgment result is no, the opening of the corresponding flow control valve is controlled based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range.

6. The dynamic control method of a multi-channel split heat exchanger according to claim 5, characterized in that: The opening of the flow control valve is controlled based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range, including: Determine whether the temperature difference of the flow path corresponding to the fluctuation range not being within the set range is greater than or equal to the set value, and obtain a second determination result; When the second judgment result is yes, increasing the opening of the flow control valve by n steps; When the second judgment result is negative, the opening of the flow control valve is reduced by n steps.

7. The dynamic control method of a multi-channel split heat exchanger according to claim 5, characterized in that: The opening of the flow control valve is controlled based on the temperature difference of the flow path corresponding to the fluctuation range not being within the set range, including: Taking the temperature difference of the middle flow path as the middle value, and determining the difference between the temperature difference of the flow path corresponding to the fluctuation range not within the set range and the middle value; Determine whether the difference is greater than or equal to a set value, and obtain a third determination result; When the third judgment result is yes, increasing the opening of the flow control valve by n steps; When the third judgment result is negative, the opening of the flow control valve is reduced by n steps.

8. The dynamic control method of a multi-channel split heat exchanger according to claim 6 or 7, characterized in that: The set point is 2°C.

9. The method for dynamic control of a multi-channel split heat exchanger according to claim 5, characterized in that: The maximum opening of the flow regulating valve is 500 steps.

10. The dynamic control method of a multi-channel split heat exchanger according to claim 5, characterized in that: The setting range is [-1°C, +1°C].

Images