Heat exchanger heat transfer effect test system and method based on fluid analysis

Abstract

The present application discloses a heat exchanger heat exchange effect test system and method based on fluid analysis, which belongs to the field of effect testing. The present application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in a heat exchange container, considers the abnormal condition of the heat exchange tube during the heat exchange process by evaluating the pressure anomaly and temperature fluctuation in the heat exchange tube, and accurately analyzes the operation state of the heat exchange tube. The present application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, analyzes the thermal conductivity anomaly based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container, analyzes the quality of the heat exchange process based on the heat exchange anomaly evaluation result and the thermal conductivity anomaly analysis result, comprehensively evaluates the heat exchange quality by combining the heat exchange characteristics of the heat exchange medium and the heat receiving medium, and further improves the accuracy of the heat exchange effect analysis.

Description

Technical Field

[0001] The present application belongs to the field of effect testing, and specifically to a heat exchange effect testing system and method for a heat exchanger based on fluid analysis. Background Art

[0002] A heat exchanger is a device used to transfer heat between two or more fluids. It is widely used in industries, energy, HVAC (heating, ventilation and air conditioning), etc. The heat exchanger transfers heat from one fluid to another by heat conduction, convection or radiation. The two fluids are usually not in direct contact. The direction of heat transfer is from high-temperature fluid to low-temperature fluid. For example, a shell and tube heat exchanger consists of a group of tube bundles and a shell. One fluid flows inside the tube and the other flows outside the tube. It is suitable for high pressure, high temperature and large flow occasions. Another example is a plate heat exchanger, which consists of a series of corrugated plates. The fluid flows between the plates. It has a compact structure and high heat transfer efficiency. It is suitable for medium and low pressure occasions. The heat exchanger is an important heat transfer equipment with various types and wide applications. When designing and using it, it is necessary to comprehensively consider factors such as heat load, fluid characteristics, and material selection to ensure efficient and safe operation;

[0003] After the heat exchanger is used, the heat exchange efficiency of the heat exchanger is affected due to the scaling in the heat exchange tubes. Therefore, it is necessary to frequently test the heat exchange effect of the heat exchanger to determine whether the heat exchanger needs to be cleaned and maintained.

[0004] However, the existing technology cannot comprehensively evaluate the abnormal conditions of the heat exchange tubes during the heat exchange process through the pressure anomalies and temperature fluctuations in the heat exchange tubes during the heat exchange effect test of the heat exchanger, and cannot accurately analyze the abnormal heat exchange efficiency of the heat exchanger caused by scaling, resulting in a low accuracy rate of heat exchange effect analysis. Most of the existing technologies have the above problems.

[0005] In order to improve the accuracy of heat exchange effect analysis, the present application designs a heat exchanger heat exchange effect testing system and method based on fluid analysis. Summary of the invention

[0006] In order to address the deficiencies in the prior art mentioned in the background technology, the present application proposes a heat exchanger heat exchange effect testing system and method based on fluid analysis. The present application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, considers the abnormal conditions of the heat exchange tubes during the heat exchange process by evaluating the pressure anomalies and temperature fluctuations in the heat exchange tubes, and accurately analyzes the operation status of the heat exchange tubes. The present application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, performs thermal conductivity anomaly analysis based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container, performs heat exchange process quality analysis based on the heat exchange anomaly evaluation results and thermal conductivity anomaly analysis results, comprehensively evaluates the heat exchange quality based on the heat exchange characteristics of the heat exchange medium and the heat receiving medium, and further improves the accuracy of the heat exchange effect analysis.

[0007] To achieve the above objectives, the present application provides the following technical solutions: In the first aspect, the present application provides a heat exchanger heat transfer effect test method based on fluid analysis, which includes the following specific steps:

[0008] Step 1: obtaining the operation status of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger;

[0009] Step 2: evaluating the abnormality of heat exchange of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container;

[0010] Step 3: Perform thermal conductivity anomaly analysis based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container;

[0011] Step 4: Perform heat exchange process quality analysis based on the heat exchange medium heat exchange anomaly assessment results and thermal conductivity anomaly analysis results;

[0012] Step 5: Based on the results of the heat exchange process quality analysis, conduct a comprehensive analysis of the heat exchange effect of the equipment and make a comprehensive judgment on whether to perform maintenance.

[0013] Preferably, based on the above scheme, the specific contents of obtaining the operation data of the heat exchanger and obtaining the operation conditions of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger are:

[0014] Step 101, injecting the same heat exchange medium into each of the same heat exchange tubes of the heat exchanger at a set flow rate to operate the heat exchanger, and storing the operation data in the operation data storage module;

[0015] Step 102, obtaining the pressure data of the heat exchange medium in each heat exchange tube, the mass flow rate, specific heat capacity, temperature change data of the heat exchange medium in each heat exchange tube after passing through the heat exchange tube, and the temperature data of the heat exchange medium entering the heat exchange tube, and storing the obtained relevant data of the heat exchange medium in the heat exchange medium data storage component;

[0016] Step 103: Acquire the mass flow rate, specific heat capacity and temperature data of the input heating medium, and store the acquired heating medium data in a heating medium data storage component.

[0017] Preferably, based on the above scheme, the heat exchange abnormality assessment of the heat exchange medium includes the following specific steps:

[0018] Step 201, obtaining the pressure data of the heat exchange medium in each heat exchange tube, and comparing the pressure data of the heat exchange medium in each heat exchange tube with the standard pressure of the corresponding heat exchange tube to obtain a pressure abnormality judgment result;

[0019] Step 202, obtaining temperature change data of the heat exchange medium in each heat exchange tube, obtaining the temperature change speed of the heat exchange medium in each heat exchange tube by dividing the temperature change data by time, and determining the temperature change fluctuation of the heat exchange tube by the temperature change speed of the heat exchange medium in each heat exchange tube;

[0020] Step 203: Obtain the pressure anomaly judgment result and the heat exchange tube temperature fluctuation judgment result, and obtain the heat exchange anomaly assessment result of the heat exchange medium after weighted summation.

[0021] Preferably, based on the above scheme, the thermal conductivity anomaly analysis includes the following specific steps:

[0022] Step 301, obtaining the mass flow rate, specific heat capacity and temperature change of the heat exchange medium and importing them into the heat exchange heat calculation formula to calculate the heat exchange heat;

[0023] Step 302: Obtain the mass flow rate, specific heat capacity, inlet temperature of the heat exchange medium, the mass flow rate, specific heat capacity and inlet temperature data of the heat receiving medium to calculate the maximum possible heat transfer of the heat exchanger, wherein how to calculate the maximum possible heat transfer of the heat exchanger is a conventional technical means in the art;

[0024] Step 303: Obtain heat exchange heat and divide it by the maximum possible heat transfer of the heat exchanger to obtain the heat exchange efficiency of the heat exchanger, and divide the heat exchange efficiency standard value by the heat exchange efficiency of the heat exchanger to obtain the abnormal thermal conductivity value.

[0025] Preferably, based on the above scheme, the heat exchange process quality analysis includes the following specific contents:

[0026] The calculated heat exchange abnormality evaluation result and thermal conductivity abnormality value of the heat exchange medium are obtained, and the obtained heat exchange abnormality evaluation result and thermal conductivity abnormality value of the heat exchange medium are standardized, multiplied, and then the inverse is obtained to obtain the heat exchange process quality. The heat exchange process quality calculation formula is: , where Hr is the heat transfer abnormality assessment result of the heat exchange medium, Hrm is the standard value of the heat transfer abnormality of the heat exchange medium, a is the weight of the heat transfer abnormality assessment, b is the weight of the thermal conductivity abnormality, Dr is the thermal conductivity abnormality value, and Drm is the standard value of the thermal conductivity abnormality.

[0027] Preferably, based on the above scheme, the comprehensive analysis of the heat exchange effect of the equipment includes the following specific steps: obtaining the calculated heat exchange process quality, comparing the heat exchange process quality with the set heat exchange process quality standard threshold, if the heat exchange process quality is greater than or equal to the set heat exchange process quality standard threshold, it indicates that the heat exchange effect of the heat exchanger meets the demand and the equipment does not need to be repaired, if the heat exchange process quality is less than the set heat exchange process quality standard threshold, it indicates that the heat exchange effect of the heat exchanger does not meet the demand and the equipment needs to be repaired;

[0028] In a second aspect, the present application provides a heat exchanger heat exchange effect test system based on fluid analysis, which is implemented based on the above-mentioned heat exchanger heat exchange effect test method based on fluid analysis, and specifically includes a data acquisition module, a heat exchange anomaly evaluation module, a thermal conductivity anomaly analysis module, a heat exchange process quality analysis module and a heat exchange effect analysis module; wherein, the data acquisition module is used to obtain the operating conditions of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger; the heat exchange anomaly evaluation module performs heat exchange anomaly evaluation of the heat exchange medium based on the operating conditions of the heat exchange medium in the heat exchange container; the thermal conductivity anomaly analysis module performs thermal conductivity anomaly analysis based on the operating conditions of the heat receiving medium and the heat exchange medium in the heat exchange container; the heat exchange process quality analysis module performs heat exchange process quality analysis based on the heat exchange medium heat exchange anomaly evaluation results and thermal conductivity anomaly analysis results; the heat exchange effect analysis module performs a comprehensive analysis of the heat exchange effect of the equipment based on the heat exchange process quality analysis results, and makes a comprehensive judgment on whether to repair it.

[0029] In a third aspect, the present application provides an electronic device, comprising: a processor and a memory, wherein the memory stores a computer program that can be called by the processor;

[0030] The processor executes the above-mentioned heat exchange effect testing method of the heat exchanger based on fluid analysis by calling the computer program stored in the memory.

[0031] In a fourth aspect, the present application provides a computer-readable storage medium storing instructions, which, when executed on a computer, enable the computer to execute the heat exchange effect testing method of a heat exchanger based on fluid analysis as described above.

[0032] At the same time, compared with the prior art, the technical effects and advantages of this application are:

[0033] The first advantage of the present application is that the present application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, considers the abnormal conditions of the heat exchange tubes during the heat exchange process through the pressure anomaly and temperature fluctuation evaluation in the heat exchange tubes, and accurately analyzes the operation status of the heat exchange tubes.

[0034] The second advantage of the present application is that the present application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, performs thermal conductivity anomaly analysis based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container, performs heat exchange process quality analysis based on the heat exchange anomaly evaluation results and thermal conductivity anomaly analysis results of the heat exchange medium, comprehensively evaluates the heat exchange quality by combining the heat exchange characteristics of the heat exchange medium and the heat receiving medium, and further improves the accuracy of heat exchange effect analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a schematic diagram of the overall process of the heat exchange effect test method of the heat exchanger based on fluid analysis;

[0037] Figure 2 It is a specific flow chart of step 2 of the heat exchange effect test method of the heat exchanger based on fluid analysis;

[0038] Figure 3 It is a specific flow chart of step 3 of the heat exchange effect test method of the heat exchanger based on fluid analysis;

[0039] Figure 4 Schematic diagram of the module composition of the heat exchanger heat transfer effect test system based on fluid analysis. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use.

[0041] In addition, the accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. The functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor methods and / or microcontroller methods.

[0042] It should be understood that, although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another unit. For example, without departing from the scope of the exemplary embodiments, a first unit may be referred to as a second unit, and a similar second unit may be referred to as a first unit. The term "and / or" used herein includes any and all combinations of one or more of the listed associated items.

[0043] In order to solve the technical problems raised in the background technology, the present application provides a preferred embodiment: Figure 1-Figure 3 As shown, the heat exchange effect test method of the heat exchanger based on fluid analysis includes the following specific steps:

[0044] Step 1: obtaining the operation status of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger;

[0045] Step 2: evaluating the abnormality of heat exchange of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container;

[0046] Step 3: Perform thermal conductivity anomaly analysis based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container;

[0047] Step 4: Perform heat exchange process quality analysis based on the heat exchange medium heat exchange anomaly assessment results and thermal conductivity anomaly analysis results;

[0048] Step 5: Based on the quality analysis results of the heat exchange process, conduct a comprehensive analysis of the heat exchange effect of the equipment and make a comprehensive judgment on whether maintenance is required;

[0049] In this embodiment, the specific contents of obtaining the operating data of the heat exchanger and obtaining the operating conditions of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger are:

[0050] Step 101, injecting the same heat exchange medium into each of the same heat exchange tubes of the heat exchanger at a set flow rate to operate the heat exchanger, and storing the operation data in the operation data storage module;

[0051] Step 102, obtaining the pressure data of the heat exchange medium in each heat exchange tube, the mass flow rate, specific heat capacity, temperature change data of the heat exchange medium in each heat exchange tube after passing through the heat exchange tube, and the temperature data of the heat exchange medium entering the heat exchange tube, and storing the obtained relevant data of the heat exchange medium in the heat exchange medium data storage component;

[0052] Step 103, obtaining the mass flow rate, specific heat capacity and temperature data of the input heated medium, and storing the obtained heated medium data in the heated medium data storage component. It should be noted in this embodiment that various parameters in this embodiment are collected by corresponding sensors, for example, the temperature is collected by a temperature sensor;

[0053] In this embodiment, the heat exchange abnormality assessment of the heat exchange medium includes the following specific steps:

[0054] Step 201, obtain the pressure data of the heat exchange medium in each heat exchange tube, compare the pressure data of the heat exchange medium in each heat exchange tube with the standard pressure of the corresponding heat exchange tube to obtain the pressure abnormality judgment result, wherein the calculation formula of the pressure abnormality judgment result is: , where n is the number of heat exchange tubes, xi is the pressure data of the heat exchange medium in the ith heat exchange tube, and xiz is the standard pressure of the corresponding heat exchange tube. This formula is used to evaluate the degree of pressure abnormality in the heat exchange tube;

[0055] Step 202: obtain the temperature change data of the heat exchange medium in each heat exchange tube, and obtain the temperature change rate of the heat exchange medium in each heat exchange tube by dividing the temperature change data by time. The temperature change fluctuation of the heat exchange tube is judged by the temperature change rate of the heat exchange medium in each heat exchange tube. The judgment formula of the temperature change fluctuation of the heat exchange tube is: , where Ti is the temperature change rate of the ith heat exchange tube. By analyzing the heat exchange effect of each heat exchange tube, the difference in heat exchange efficiency of each heat exchange tube in the heat exchanger is obtained to evaluate the volatility of the heat exchange effect of the heat exchange tube. The greater the volatility of the heat exchange effect of the heat exchange tube, the greater the difference in the heat exchange effect of the heat exchange tube.

[0056] Step 203, obtaining the pressure anomaly judgment result and the heat exchange tube temperature change fluctuation judgment result, and performing weighted summation to obtain the heat exchange anomaly assessment result of the heat exchange medium;

[0057] In this embodiment, the thermal conductivity abnormality analysis includes the following specific steps:

[0058] Step 301, obtain the mass flow rate, specific heat capacity and temperature change of the heat exchange medium and import them into the heat exchange heat calculation formula to calculate the heat exchange heat, wherein the heat exchange heat calculation formula is: , where c is the specific heat capacity of the heat exchange medium, m is the mass flow rate of the heat exchange medium, is the change of the temperature of the heat exchange medium;

[0059] Step 302, obtaining the mass flow rate, specific heat capacity, inlet temperature of the heat exchange medium, the mass flow rate, specific heat capacity and inlet temperature data of the heat receiving medium to calculate the maximum possible heat transfer of the heat exchanger, wherein how to calculate the maximum possible heat transfer of the heat exchanger is a conventional technical means in the art, which can be described in detail here, and the specific calculation method is: first calculate the heat capacity ratio of the heat exchange medium and the heat receiving medium, wherein the calculation formula method is: the heat capacity ratio is equal to the mass flow multiplied by the specific heat capacity, obtain the relatively smaller of the heat capacity ratios of the heat exchange medium and the heat receiving medium as the selected heat capacity ratio, and obtain the maximum possible heat transfer of the heat exchanger by multiplying the difference between the inlet temperature of the heat exchange medium and the inlet temperature of the heat receiving medium by the selected heat capacity ratio;

[0060] Step 303: Obtain heat exchange heat and divide it by the maximum possible heat transfer of the heat exchanger to obtain the heat exchange efficiency of the heat exchanger, and divide the heat exchange efficiency standard value by the heat exchange efficiency of the heat exchanger to obtain the abnormal thermal conductivity value;

[0061] In this embodiment, the heat exchange process quality analysis includes the following specific contents:

[0062] The calculated heat exchange abnormality evaluation result and thermal conductivity abnormality value of the heat exchange medium are obtained, and the obtained heat exchange abnormality evaluation result and thermal conductivity abnormality value of the heat exchange medium are standardized, multiplied, and then the inverse is obtained to obtain the heat exchange process quality. The heat exchange process quality calculation formula is: , where Hr is the heat transfer abnormality assessment result of the heat exchange medium, Hrm is the heat transfer abnormality standard value of the heat transfer medium, a is the heat transfer abnormality assessment proportion weight, b is the thermal conductivity abnormality proportion weight, Dr is the thermal conductivity abnormality value, and Drm is the thermal conductivity abnormality standard value;

[0063] In this embodiment, the comprehensive analysis of the heat exchange effect of the equipment includes the following specific steps: obtaining the calculated heat exchange process quality, comparing the heat exchange process quality with the set heat exchange process quality standard threshold, if the heat exchange process quality is greater than or equal to the set heat exchange process quality standard threshold, it indicates that the heat exchange effect of the heat exchanger meets the requirements and the equipment does not need to be repaired; if the heat exchange process quality is less than the set heat exchange process quality standard threshold, it indicates that the heat exchange effect of the heat exchanger does not meet the requirements and the equipment needs to be repaired.

[0064] Secondly, it should be noted that in this embodiment, the setting parameters (such as thresholds, respective proportions or weights) in this application are obtained by obtaining the operating conditions of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the historical heat exchanger, and obtaining the judgment result of whether blockage occurs at the same time, substituting the operating condition data into the calculation results and judgment results of this embodiment into the fitting software for data fitting iteration, and obtaining the setting parameters (such as thresholds, respective proportions or weights) that meet the maximum judgment result accuracy.

[0065] Finally, the benefits of this embodiment are explained here. This embodiment evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, considers the abnormal conditions of the heat exchange tubes during the heat exchange process by evaluating the pressure anomalies and temperature fluctuations in the heat exchange tubes, and accurately analyzes the operation status of the heat exchange tubes. This application evaluates the heat exchange anomaly of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container, performs thermal conductivity anomaly analysis based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container, performs heat exchange process quality analysis based on the heat exchange anomaly evaluation results and thermal conductivity anomaly analysis results, comprehensively evaluates the heat exchange quality based on the heat exchange characteristics of the heat exchange medium and the heat receiving medium, and further improves the accuracy of heat exchange effect analysis.

[0066] Secondly, if Figure 4 As shown, the present embodiment also provides a heat exchanger heat exchange effect test system based on fluid analysis, which is implemented based on the above-mentioned heat exchanger heat exchange effect test method based on fluid analysis, and specifically includes a data acquisition module, a heat exchange anomaly evaluation module, a thermal conductivity anomaly analysis module, a heat exchange process quality analysis module and a heat exchange effect analysis module; wherein the data acquisition module is used to obtain the operation status of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger; the heat exchange anomaly evaluation module performs heat exchange anomaly evaluation of the heat exchange medium based on the operation status of the heat exchange medium in the heat exchange container; the thermal conductivity anomaly analysis module performs thermal conductivity anomaly analysis based on the operation status of the heat receiving medium and the heat exchange medium in the heat exchange container; the heat exchange process quality analysis module performs heat exchange process quality analysis based on the heat exchange anomaly evaluation result of the heat exchange medium and the thermal conductivity anomaly analysis result; the heat exchange effect analysis module performs a comprehensive analysis of the heat exchange effect of the equipment based on the heat exchange process quality analysis result, and makes a comprehensive judgment on whether to repair it. At the same time, it should be noted that Figure 4 The direction of the arrow in the figure represents the direction of data transmission.

[0067] Then, this embodiment further provides an electronic device, comprising: a processor and a memory, wherein the memory stores a computer program that can be called by the processor;

[0068] The processor executes the above-mentioned heat exchange effect testing method of the heat exchanger based on fluid analysis by calling the computer program stored in the memory.

[0069] The electronic device may have relatively large differences due to different configurations or performances, and may include one or more processors and one or more memories, wherein the memory stores at least one computer program, which is loaded and executed by the processor to implement the heat exchanger heat exchange effect test method based on fluid analysis provided by the above method embodiment. The electronic device may also include other components for realizing the functions of the device, for example, the electronic device may also have components such as a wired or wireless network interface and an input and output interface to input and output data. This embodiment will not be described in detail here.

[0070] Finally, this embodiment provides a computer-readable storage medium having a rewritable computer program stored thereon;

[0071] When the computer program runs on a computer device, the computer device is enabled to execute the above-mentioned heat exchange effect testing method of a heat exchanger based on fluid analysis.

[0072] For example, the computer readable storage medium can be a read-only memory, a random access memory, a read-only CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0073] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0074] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0075] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0076] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0077] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0078] Memory may include non-permanent storage in a computer-readable medium, in the form of random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0079] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0080] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0081] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heat exchanger heat transfer effect test method based on fluid analysis, characterized in that: It includes the following specific steps: Step 1: obtaining the operation status of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger; Step 2: evaluating the abnormality of heat exchange of the heat exchange medium based on the operation of the heat exchange medium in the heat exchange container; The heat exchange abnormality assessment of the heat exchange medium includes the following specific steps: Step 201, obtaining the pressure data of the heat exchange medium in each heat exchange tube, and comparing the pressure data of the heat exchange medium in each heat exchange tube with the standard pressure of the corresponding heat exchange tube to obtain a pressure abnormality judgment result; Step 202: obtaining temperature change data of the heat exchange medium in each heat exchange tube, obtaining the temperature change rate of the heat exchange medium in each heat exchange tube by dividing the temperature change data by time, and determining the temperature change fluctuation of the heat exchange tube by the temperature change rate of the heat exchange medium in each heat exchange tube; Step 203, obtaining the pressure anomaly judgment result and the heat exchange tube temperature change fluctuation judgment result, and performing weighted summation to obtain the heat exchange anomaly assessment result of the heat exchange medium; Step 3: Perform thermal conductivity anomaly analysis based on the operation of the heat receiving medium and the heat exchange medium in the heat exchange container; The thermal conductivity anomaly analysis comprises the following specific steps: Step 301, obtaining the mass flow rate, specific heat capacity and temperature change of the heat exchange medium and importing them into the heat exchange heat calculation formula to calculate the heat exchange heat; Step 302, obtaining the mass flow rate, specific heat capacity, inlet temperature of the heat exchange medium, the mass flow rate, specific heat capacity and inlet temperature data of the heat receiving medium to calculate the maximum possible heat transfer of the heat exchanger; Step 303: Obtain heat exchange heat and divide it by the maximum possible heat transfer of the heat exchanger to obtain the heat exchange efficiency of the heat exchanger, and divide the heat exchange efficiency standard value by the heat exchange efficiency of the heat exchanger to obtain the abnormal thermal conductivity value; Step 4: Perform heat exchange process quality analysis based on the heat exchange medium heat exchange anomaly assessment results and thermal conductivity anomaly analysis results; The heat exchange process quality analysis includes the following specific contents: The calculated heat exchange abnormality evaluation result and thermal conductivity abnormality value of the heat exchange medium are obtained, and the obtained heat exchange abnormality evaluation result and thermal conductivity abnormality value of the heat exchange medium are standardized, multiplied, and then the inverse is obtained to obtain the heat exchange process quality. The heat exchange process quality calculation formula is: , where Hr is the heat transfer abnormality assessment result of the heat transfer medium, Hrm is the heat transfer abnormality standard value of the heat transfer medium, a is the heat transfer abnormality assessment weight, b is the thermal conductivity abnormality weight, Dr is the thermal conductivity abnormality value, and Drm is the thermal conductivity abnormality standard value Step 5: Based on the results of the heat exchange process quality analysis, conduct a comprehensive analysis of the heat exchange effect of the equipment and make a comprehensive judgment on whether to perform maintenance.

2. The heat exchange effect testing method of a heat exchanger based on fluid analysis according to claim 1, characterized in that: The comprehensive analysis of the heat exchange effect of the equipment includes the following specific steps: obtaining the calculated heat exchange process quality, comparing the heat exchange process quality with the set heat exchange process quality standard threshold, if the heat exchange process quality is greater than or equal to the set heat exchange process quality standard threshold, it indicates that the heat exchange effect of the heat exchanger meets the requirements and the equipment does not need to be repaired; if the heat exchange process quality is less than the set heat exchange process quality standard threshold, it indicates that the heat exchange effect of the heat exchanger does not meet the requirements and the equipment needs to be repaired.

3. The heat exchange effect testing method of a heat exchanger based on fluid analysis according to claim 2, characterized in that: The specific contents of obtaining the operating data of the heat exchanger and obtaining the operating conditions of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger are: The same heat exchange medium is injected into each identical heat exchange tube of the heat exchanger at a set flow rate to operate the heat exchanger, and the operation data is stored in the operation data storage module; Obtaining the pressure data of the heat exchange medium in each heat exchange tube, the mass flow rate, specific heat capacity, temperature change data of the heat exchange medium in each heat exchange tube after passing through the heat exchange tube, and the temperature data of the heat exchange medium entering the heat exchange tube, and storing the obtained relevant data of the heat exchange medium in the heat exchange medium data storage component; The mass flow rate, specific heat capacity and temperature data of the input heated medium are obtained, and the obtained heated medium data are stored in a heated medium data storage component.

4. A heat exchanger heat transfer effect test system based on fluid analysis, which is implemented based on the heat exchanger heat transfer effect test method based on fluid analysis as claimed in any one of claims 1 to 3, characterized in that: It specifically includes a data acquisition module, a heat exchange anomaly assessment module, a thermal conductivity anomaly analysis module, a heat exchange process quality analysis module and a heat exchange effect analysis module; Wherein, the data acquisition module is used to obtain the operation status of the heat exchange medium and the heat receiving medium in the heat exchange container during the operation of the heat exchanger; The heat exchange abnormality assessment module performs heat exchange abnormality assessment on the heat exchange medium based on the operation status of the heat exchange medium in the heat exchange container; The thermal conductivity anomaly analysis module performs thermal conductivity anomaly analysis based on the operation conditions of the heat receiving medium and the heat exchange medium in the heat exchange container; The heat exchange process quality analysis module performs heat exchange process quality analysis based on the heat exchange medium heat exchange anomaly assessment result and the thermal conductivity anomaly analysis result; The heat exchange effect analysis module performs a comprehensive analysis of the heat exchange effect of the equipment based on the quality analysis results of the heat exchange process, and makes a comprehensive judgment on whether maintenance is required.

5. An electronic device comprising: A processor and a memory, wherein the memory stores a computer program that can be called by the processor; It is characterized in that the processor executes the heat exchange effect testing method of the heat exchanger based on fluid analysis as described in any one of claims 1 to 3 by calling the computer program stored in the memory.

6. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are executed on a computer, the computer executes the heat exchange effect testing method of a heat exchanger based on fluid analysis as described in any one of claims 1 to 3.

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