Refrigerant pump testing methods, apparatuses, devices, storage media, and products

Abstract

The application discloses a refrigerant pump test method, device, equipment, storage medium and product, relates to the technical field of refrigeration system, and refrigerant pump test method includes: in response to the test starting operation triggered by the user, based on the refrigeration cycle component, the refrigerant circulation under the corresponding working condition is carried out, based on the core controller of the refrigerant pump test equipment, the physical quantity corresponding to each refrigeration cycle component in the refrigerant circulation process is automatically acquired, and the test result of the refrigerant pump test is determined based on the physical quantity. Based on the target parameter arranged on the touch screen, the parameter of the refrigerant pump is automatically adjusted, the setting of the refrigeration cycle working condition parameter is not manually carried out, the physical quantity is automatically acquired in the process of refrigerant circulation, and the data acquisition is not manually carried out. Therefore, the application can carry out comprehensive working condition simulation during the refrigerant pump test through automatic parameter adjustment and physical quantity acquisition.

Description

Technical Field

[0001] This application relates to the field of refrigeration system technology, and in particular to refrigerant pump testing methods, apparatus, equipment, storage media and products. Background Technology

[0002] The research and development and production of refrigerant pumps require testing their performance and reliability. Therefore, a refrigerant pump testing device with data acquisition capabilities is needed to test the pump's performance and reliability under various operating conditions. However, current refrigerant pump testing methods typically involve manual adjustment and data acquisition, which can only simulate limited operating conditions, resulting in incomplete simulation of operating conditions during refrigerant pump testing. Summary of the Invention

[0003] The main objective of this application is to provide a refrigerant pump testing method, apparatus, equipment, storage medium, and product, aiming to solve the technical problem of incomplete simulation of operating conditions in refrigerant pump testing.

[0004] To achieve the above objectives, this application proposes a refrigerant pump testing method, applied to refrigerant pump testing equipment, the method comprising:

[0005] In response to a user-triggered test start operation, a refrigerant cycle is performed under the corresponding operating conditions based on the refrigeration cycle component in the refrigerant pump test equipment. The operating conditions of the refrigerant cycle are determined based on the target operating condition parameters of the refrigeration cycle component, which are determined based on the target parameters set by the user on the touch screen.

[0006] Based on the core controller of the refrigerant pump testing equipment, the physical quantities corresponding to each of the refrigeration cycle components are automatically acquired during the refrigerant cycle process.

[0007] Based on the physical quantities, the test results of the refrigerant pump test are determined.

[0008] In one embodiment, the refrigeration cycle component includes a heating tank, a condenser, a liquid receiver, a refrigerant pump, and a heater at the bottom of the heating tank. The target operating condition parameters include the target heat load of the heating tank, the target fan speed of the condenser, and the target pump speed of the refrigerant pump. The step of performing refrigerant circulation under the corresponding operating condition based on the refrigeration cycle component in the refrigerant pump testing equipment, in response to a user-triggered test start operation, includes:

[0009] In response to a user-triggered test start operation, based on the heater, the refrigerant is evaporated into a gaseous refrigerant with the target heat load in the heating tank, and the gaseous refrigerant is delivered to the condenser;

[0010] Based on the condenser having the target fan speed, the gaseous refrigerant is condensed into liquid refrigerant, and the liquid refrigerant is stored in the storage tank;

[0011] Based on the refrigerant pump with the target pump speed, the liquid refrigerant in the storage tank is delivered to the heating tank to perform refrigerant circulation under the corresponding operating conditions.

[0012] In one embodiment, the refrigerant pump test further includes an automatic test. The step of performing refrigerant circulation under corresponding operating conditions based on the refrigeration cycle component in the refrigerant pump test equipment, in response to a user-triggered test start operation, further includes:

[0013] In response to a user-triggered automatic test operation, determine the minimum pump speed, maximum pump speed, pump speed interval, minimum head, maximum head, and head interval of the automatic test.

[0014] Based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components, the refrigerant is circulated sequentially from the maximum pump speed to the minimum pump speed under corresponding operating conditions. Based on the core controller, the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process are automatically acquired and saved. The current pump speed of the refrigerant pump decreases based on the pump speed interval after each time the physical quantity is saved.

[0015] In one embodiment, the step of sequentially circulating the refrigerant under corresponding operating conditions from the minimum pump speed to the maximum pump speed based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components, and automatically acquiring and saving the corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller includes:

[0016] During each pump speed test of the refrigerant pump, based on the current pump speed and the refrigeration cycle component, the refrigerant is circulated sequentially from the minimum head to the maximum head under the corresponding operating conditions. Based on the core controller, the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle are automatically acquired and saved. The current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantity.

[0017] In one embodiment, the physical quantities include the inlet pressure of the refrigerant pump, the outlet pressure of the refrigerant pump, and the flow rate of the refrigerant pump. The step of determining the test result of the refrigerant pump test based on the physical quantities includes:

[0018] Calculate the corresponding refrigerant pump head based on the inlet pressure and the outlet pressure;

[0019] Determine the mapping relationship between the refrigerant pump head and the refrigerant pump flow rate at the target pump speed;

[0020] The test results of the refrigerant pump test are determined based on the mapping relationship.

[0021] Furthermore, to achieve the above objectives, this application also proposes a refrigerant pump testing device, which includes:

[0022] The cycle simulation module is used to respond to the test start operation triggered by the user and perform refrigerant circulation under corresponding operating conditions based on the refrigeration cycle component in the refrigerant pump test equipment. The operating conditions of the refrigerant circulation are determined based on the target operating condition parameters of the refrigeration cycle component, and the target operating condition parameters are determined based on the target parameters set by the user on the touch screen.

[0023] The physical quantity acquisition module is used to automatically acquire the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle process based on the core controller of the refrigerant pump testing equipment.

[0024] The result determination module is used to determine the test result of the refrigerant pump test based on the physical quantity.

[0025] Furthermore, to achieve the above objectives, this application also proposes a refrigerant pump testing device, the device comprising:

[0026] The refrigeration cycle component is used to circulate the refrigerant under the corresponding operating conditions in response to a user-triggered test start operation.

[0027] A touch screen is used to set the parameters of the refrigeration cycle component so that the target parameters of the refrigeration cycle component are consistent with the set parameters;

[0028] The core controller is used to automatically acquire the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle.

[0029] In one possible embodiment of this application, the refrigeration cycle component further includes:

[0030] A heating tank for evaporating the refrigerant into a gaseous refrigerant having the target heat load;

[0031] A condenser is used to condense the gaseous refrigerant into a liquid refrigerant;

[0032] A liquid storage tank for storing the liquid refrigerant condensed by the condenser;

[0033] A refrigerant pump is used to transport the liquid refrigerant in the storage tank to the heating tank for refrigerant circulation under corresponding operating conditions.

[0034] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the refrigerant pump testing method described above.

[0035] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the refrigerant pump testing method described above.

[0036] One or more technical solutions proposed in this application have at least the following technical effects:

[0037] In response to a user-triggered test start operation, the refrigerant pump testing equipment performs a refrigerant cycle under corresponding operating conditions based on the refrigeration cycle components. The operating conditions of the refrigerant cycle are determined based on the target operating condition parameters of the refrigeration cycle components, which are determined based on the target parameters set by the user on the touchscreen. The core controller of the refrigerant pump testing equipment automatically acquires the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle, and determines the test results of the refrigerant pump test based on these physical quantities.

[0038] Compared to current methods that rely on manual adjustment and data acquisition to test refrigerant pumps under specific operating conditions, this application automatically adjusts the operating parameters of the refrigeration cycle components based on target parameters set on a touchscreen, eliminating the need for manual parameter settings. Furthermore, during the refrigerant cycle, the core controller automatically acquires physical quantities from various sensors, eliminating the need for manual data collection. Therefore, this application automatically configures the parameters of the refrigeration cycle components and collects physical quantities during the refrigeration cycle, enabling comprehensive operating condition simulation during refrigerant pump testing. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1This is a flowchart illustrating an embodiment of the refrigerant pump testing method of this application.

[0042] Figure 2 This is a schematic diagram of the first scenario provided in Embodiment 1 of the refrigerant pump testing method of this application;

[0043] Figure 3 This is a schematic diagram of the second scenario provided in Embodiment 1 of the refrigerant pump testing method of this application;

[0044] Figure 4 This is a schematic diagram of the third scenario provided in Embodiment 1 of the refrigerant pump testing method of this application;

[0045] Figure 5 This is a schematic diagram of the fourth scenario provided in Embodiment 1 of the refrigerant pump testing method of this application;

[0046] Figure 6 This is a flowchart illustrating Embodiment 2 of the refrigerant pump testing method of this application;

[0047] Figure 7 This is a schematic diagram of the module structure of the refrigerant pump testing device according to an embodiment of this application;

[0048] Figure 8 This is a schematic diagram illustrating the data acquisition consent process involved in the refrigerant pump testing method in this application embodiment.

[0049] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0051] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0052] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device or refrigerant pump testing device capable of performing the above functions. The following description uses a refrigerant pump testing device as an example to illustrate this embodiment and the subsequent embodiments.

[0053] The research and development and production of refrigerant pumps require testing their performance and reliability. Therefore, a refrigerant pump testing device with data acquisition capabilities is needed to test the pump's performance and reliability under various operating conditions. However, current refrigerant pump testing methods typically rely on manual adjustment and data acquisition, simulating only limited operating conditions, resulting in incomplete simulation during testing. Furthermore, refrigerant pump testing devices that rely on manual adjustment and parameter collection suffer from operational complexity, low efficiency, and inconvenience.

[0054] Based on this, the embodiments of this application provide a refrigerant pump testing method, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the refrigerant pump testing method of this application.

[0055] In this embodiment, the refrigerant pump testing method includes steps S10 to S30:

[0056] Step S10: In response to the user-triggered test start operation, refrigerant circulation is performed under corresponding operating conditions based on the refrigeration cycle component in the refrigerant pump test equipment. The operating conditions of the refrigerant circulation are determined based on the target operating condition parameters of the refrigeration cycle component, and the target operating condition parameters are determined based on the target parameters set by the user on the touch screen.

[0057] The refrigeration cycle components in refrigeration testing equipment consist of a heating tank, expansion valve, condenser, liquid receiver, refrigerant pump, and piping, forming a closed loop to achieve the circulation of refrigerant. Operating parameters are key physical quantities that need to be controlled during testing, such as temperature, pressure, flow rate, superheat, pump speed, valve opening, and fan speed, to simulate specific operating environments. The target operating parameters are the operating values ​​that the user expects to achieve. The connection relationships of the refrigeration cycle components can be found in [reference needed]. Figure 2 , Figure 2 It includes various refrigeration cycle components, physical quantity testing components, and piping for connection.

[0058] Understandably, current refrigerant pump testing relies heavily on manual valve adjustments and instrument observation for refrigerant pump operation, requiring repeated trial and error, resulting in complex operation, low efficiency, and difficulty in accurately reproducing target conditions. This embodiment automatically converts the target parameters set by the user on the touchscreen into executable operating commands for the control system. The core controller (PLC) then automatically coordinates the coordinated actions of each refrigeration cycle component, thereby establishing a refrigerant cycle that meets preset conditions. (See reference...) Figure 3 , Figure 3 This indicates the connection relationship between the touch screen, the cooling cycle component, and the various control components in this embodiment.

[0059] This embodiment, through the aforementioned automatic control, allows users to simply input target parameters on the touchscreen, and the system can automatically identify and drive the corresponding components to adjust the parameters, quickly establishing a refrigerant cycle that meets the set conditions. This reduces errors caused by human intervention, improves test preparation efficiency, and enhances the consistency and repeatability of operating conditions across different tests through automatic parameter adjustment.

[0060] In one feasible implementation, the refrigeration cycle components include a heating tank, a condenser, a liquid receiver, a refrigerant pump, and a heater at the bottom of the heating tank. The target operating condition parameters include the target heat load of the heating tank, the target fan speed of the condenser, and the target pump speed of the refrigerant pump. The specific implementation of the refrigerant cycle under corresponding operating conditions, based on the refrigeration cycle components in the refrigerant pump testing equipment, in response to a user-triggered test start operation, can also be:

[0061] In response to a user-triggered test start operation, based on the heater, the refrigerant is evaporated into a gaseous refrigerant with the target heat load in the heating tank, and the gaseous refrigerant is delivered to the condenser. Based on the condenser with the target fan speed, the gaseous refrigerant is condensed into a liquid refrigerant, and the liquid refrigerant is stored in the storage tank. Based on the refrigerant pump with the target pump speed, the liquid refrigerant in the storage tank is delivered to the heating tank to perform refrigerant circulation under the corresponding operating conditions.

[0062] It should be noted that the heating tank is a container that holds refrigerant and evaporates it through a heater. It is used to simulate the heat load in actual applications. Inside the heating tank, the refrigerant absorbs heat and changes from a liquid to a gaseous state. The condenser is a heat exchange device used to exchange heat between the high-temperature, high-pressure gaseous refrigerant and the outside air, causing the gaseous refrigerant to release heat and condense into a liquid state. The liquid storage tank is used to store the condensed liquid refrigerant.

[0063] The refrigerant pump is used to deliver liquid refrigerant from the storage tank to the inlet of the heating tank and provide the necessary head; its speed can be adjusted by a frequency converter. The heater is an electric heating element installed at the bottom of the heating tank, used to adjust the heating power by controlling the on / off duty cycle, thereby simulating different sizes of heat loads.

[0064] Understandably, traditional refrigerant pump testing devices cannot fully simulate parameters such as heat load, condensation conditions, and pump speed. Even if simulation is performed, it requires manual adjustment of valve opening, observation of pressure gauges, or manual start-stop of the equipment. The adjustment process is relatively slow and has poor accuracy, making it difficult to coordinate and control multiple variables to achieve the preset operating conditions.

[0065] Therefore, this embodiment uses a PLC to adjust the parameters of the refrigeration cycle components set by the user to the target heat load, target fan speed, and target pump speed set by the user. Through the above-mentioned parameter adjustment of multiple components, the testing device can more realistically simulate the complex working conditions in actual application scenarios, improve the accuracy of test data, and at the same time, the automatic and accurate parameter adjustment also improves the testing efficiency and working condition simulation capability.

[0066] In one embodiment, the refrigeration cycle component further includes a first throttling valve between the refrigerant pump and the heating tank, and a second throttling valve between the heating tank and the condenser. The target parameters also include a target superheat of the heating tank and a target pipe resistance of the gas pipeline. The specific implementation prior to the step of evaporating the refrigerant into a gaseous refrigerant with the target heat load in the heating tank based on the heater, and delivering the gaseous refrigerant to the condenser in response to a user-triggered test start operation, may also be:

[0067] In response to the user's parameter setting operation, the target heat load, target superheat, target fan speed, and target pump speed of the refrigeration cycle component are determined. Based on the target heat load, the on / off duty cycle of the relay connected to the heater is adjusted. Based on the target superheat, the opening of the first throttle valve is adjusted. Based on the target pipe resistance, the opening of the second throttle valve is adjusted. Based on the target pump speed, the first frequency converter corresponding to the refrigerant pump is adjusted. Based on the target fan speed, the second frequency converter corresponding to the condenser is adjusted.

[0068] It should be noted that the second throttle valve can simulate different resistances in the system's gas pipeline by adjusting its opening degree; the smaller the opening, the lower the resistance. The condenser fan's speed can be adjusted to control the condensing pressure; the lower the fan speed, the higher the condensing pressure. The first throttle valve's opening degree can be adjusted to regulate the flow rate into the heating tank, thereby controlling the superheat at the heating tank outlet and ensuring complete refrigerant evaporation; the larger the valve opening, the lower the superheat. The refrigerant pump's speed is adjusted by regulating the frequency of the connected first frequency converter, thus controlling the head; the higher the speed, the greater the head. The heater's load can be controlled by adjusting the duty cycle of the connected relay; the larger the duty cycle, the greater the load.

[0069] It is understood that this implementation method, through corresponding control components, applies individual conditions to each parameter during the operating condition simulation process, preventing the adjustment of a single parameter from affecting the simulation of the overall operating condition, thereby improving the flexibility, accuracy, and repeatability of operating condition adjustment.

[0070] In one embodiment, to facilitate the testing of the refrigerant pump, a [method / mechanism] can be used. Figure 4 The simple testing device shown Figure 4 This includes a device for testing a refrigerant pump without simulated load. During testing, the pump speed can be adjusted via a frequency converter, and the pressure difference between the pump inlet and outlet can be controlled by the opening of a throttle valve to adjust the pump's head, thereby testing the flow rate and head curves at various speeds. The control system of this simplified testing system is as follows: Figure 5 As shown, Figure 5 This illustrates the connection relationships between the touchscreen, PLC, and various control components in the aforementioned simplified testing device.

[0071] Step S20: Based on the core controller of the refrigerant pump testing equipment, automatically acquire the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle process;

[0072] It should be noted that the core controller (PLC) is the control unit of the refrigerant pump test device in this embodiment, responsible for acquiring sensor data, executing control logic, and sending control commands. It is the core hardware for achieving automatic data acquisition and control in this embodiment.

[0073] Physical quantities are measurable parameters that reflect the operating status of the system, mainly including temperature data such as the inlet and outlet temperatures of the heating tank and the inlet and outlet temperatures of the condenser; pressure data such as the pump inlet pressure P1, pump outlet pressure P2, condensing pressure, and evaporating pressure; pump outlet volumetric flow rate data measured by a flow meter; actual operating speed data of the refrigerant pump and the condenser fan; power data such as heater power and pump input power; and actual opening feedback data of the first and second throttle valves.

[0074] In the traditional testing process of refrigerant pumps, the acquisition of physical quantities relies on manual reading of data from instruments such as pressure gauges, thermometers, and flow meters. The recording process is time-consuming and labor-intensive, and there are problems such as reading errors, recording delays, and data asynchrony, making it difficult to achieve continuous, multi-point, and high-frequency data acquisition.

[0075] Therefore, this embodiment automatically acquires test data by using a PLC to collect the physical quantities of key components during the refrigeration cycle. This automatic data acquisition avoids subjective errors and time delays caused by manual readings, significantly improving data accuracy and reliability. By directly acquiring the corresponding data through the core controller, key performance indicators such as pump head can be calculated in real time, and corresponding test curves and reports can be generated, thereby greatly improving testing efficiency and accuracy.

[0076] Step S30: Based on the physical quantity, determine the test result of the refrigerant pump test.

[0077] It should be noted that the test results of the refrigerant pump in this embodiment include the head curve between the head and flow rate of the refrigerant pump at different speeds.

[0078] In one feasible implementation, the physical quantities include the inlet pressure of the refrigerant pump, the outlet pressure of the refrigerant pump, and the flow rate of the refrigerant pump. A further implementation of determining the test results of the refrigerant pump based on these physical quantities may be:

[0079] Based on the inlet pressure and the outlet pressure, the corresponding refrigerant pump head is calculated, and the mapping relationship between the refrigerant pump head and the refrigerant pump flow rate at the target pump speed is determined. Based on the mapping relationship, the test result of the refrigerant pump test is determined.

[0080] It should be noted that the inlet pressure is the refrigerant pressure at the inlet of the refrigerant pump, reflecting the pump's suction conditions. The outlet pressure is the refrigerant pressure at the outlet of the refrigerant pump, reflecting the pump's output pressure capacity. The refrigerant pump flow rate is the volume or mass flow rate of refrigerant passing through the pump per unit time, measured in real time by a flow meter installed at the pump outlet or in the pipeline, used to evaluate the pump's delivery capacity. The refrigerant pump head refers to the energy increment gained by a unit weight of refrigerant after flowing through the pump, used to measure the pump's lifting capacity. The mapping relationship is the functional relationship between the pump's head and flow rate at a fixed speed, used to reflect the pump's operating characteristics under different loads.

[0081] Understandably, in traditional refrigerant pump testing procedures, test results often rely on manual determination, making it impossible to judge in real time whether the refrigerant pump test under the current operating conditions meets the standards or whether the operating conditions need to be adjusted.

[0082] This implementation method calculates the head of the refrigerant pump based on the inlet pressure, outlet pressure, and flow rate, and automatically establishes a head-flow rate mapping relationship at the target pump speed. Thus, at the same target speed, a complete head-flow rate curve is automatically plotted based on multiple stable operating points, intuitively showing the trend of pump head change with flow rate. This facilitates real-time judgment of the refrigerant pump's working stability, maximum head point, rated operating point, and high-efficiency range, improving the effectiveness of refrigerant pump testing.

[0083] In summary, this embodiment responds to a user-triggered test start operation, and performs refrigerant circulation under corresponding operating conditions based on the refrigeration cycle components in the refrigerant pump testing equipment. The operating conditions of the refrigerant circulation are determined based on the target operating condition parameters of the refrigeration cycle components, which are determined based on target parameters set by the user on the touchscreen. The core controller of the refrigerant pump testing equipment automatically acquires the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process, and determines the test results of the refrigerant pump test based on these physical quantities.

[0084] Compared to current methods that rely on manual adjustment and data acquisition to test refrigerant pumps under specific operating conditions, this embodiment automatically adjusts the operating parameters of the refrigeration cycle components based on target parameters set on the touchscreen, eliminating the need for manual parameter settings. Furthermore, during the refrigerant cycle, the core controller automatically acquires physical quantities from various sensors, eliminating the need for manual data collection. Therefore, this embodiment automatically configures the parameters of the refrigeration cycle components and collects physical quantities during the refrigeration cycle, enabling comprehensive operating condition simulation during refrigerant pump testing.

[0085] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 6 The refrigerant pump test also includes automatic testing, and the refrigerant pump test method further includes steps S100 to S200:

[0086] Step S100: In response to the user-triggered automatic test operation, determine the minimum pump speed, maximum pump speed, pump speed interval, minimum head, maximum head, and head interval of the automatic test.

[0087] It should be noted that the minimum pump speed is the lowest speed at which the refrigerant pump will operate during the automatic test, used to simulate light or low-load operation. The maximum pump speed is the highest speed at which the refrigerant pump will operate during the automatic test, used to evaluate the pump's extreme performance. The pump speed interval is the incremental step size of the pump speed between two adjacent test points, used to scan the performance of the refrigerant pump under different speed conditions. The minimum head is the lowest pressure difference target set by the system at a certain speed, used to represent the minimum pipeline resistance that the pump needs to overcome. The maximum head is the highest pressure difference target set by the system at a certain speed, used to represent the maximum system resistance that the pump needs to overcome. The head interval is the incremental step size between two adjacent head test points, enabling scanning tests under different head conditions.

[0088] Understandably, traditional refrigerant pump testing methods typically only allow manual testing at a few fixed operating points, making it difficult to systematically obtain the pump's performance curves across its entire operating range. Furthermore, these methods suffer from poor repeatability and low efficiency. Therefore, this embodiment addresses this by setting the refrigerant pump's speed and head range, as well as the step size parameters, thereby enabling continuous testing of multiple speed and head combinations without manual intervention. This significantly improves the efficiency of refrigerant pump testing.

[0089] Step S200: Based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components, refrigerant is circulated sequentially from the maximum pump speed to the minimum pump speed under corresponding operating conditions. Based on the core controller, the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process are automatically acquired and saved. The current pump speed of the refrigerant pump decreases based on the pump speed interval after each saving of the physical quantity.

[0090] In one feasible implementation, the refrigerant circulation under corresponding operating conditions is performed sequentially from the minimum pump speed to the maximum pump speed based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components, and the specific implementation method of automatically acquiring and saving the corresponding physical quantities of each of the refrigeration cycle components during the refrigerant circulation process based on the core controller can also be:

[0091] During each pump speed test of the refrigerant pump, based on the current pump speed and the refrigeration cycle component, the refrigerant is circulated sequentially from the minimum head to the maximum head under the corresponding operating conditions. Based on the core controller, the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle are automatically acquired and saved. The current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantity.

[0092] Understandably, in traditional refrigerant pump testing, testers need to manually adjust parameters such as pump speed and head, wait for the system to stabilize, record data, and then manually change the operating conditions again. This testing process is cumbersome and prone to errors, making it difficult to guarantee stability and consistency across test points. Therefore, this embodiment follows a preset test path, starting from the highest speed and gradually decreasing the pump speed. At each speed level, it completes a full test from minimum to maximum head, and automatically collects and saves key physical quantities at each stable operating point. This continuous testing process ensures the completeness and accuracy of the test data, avoiding omissions or errors caused by human operation. Furthermore, during the automated testing process, this embodiment analyzes the data and automatically plots flow-head curves at different speeds, achieving automated testing of different refrigerant pump speeds and head combinations. This comprehensive simulation of refrigerant pump test conditions effectively improves the testing efficiency of refrigerant pumps.

[0093] In one embodiment, the core controller stores a pre-set test safety threshold. During the refrigerant pump test, the core controller (such as a PLC) can monitor in real time whether the key physical quantities exceed the test safety threshold. If the test safety threshold is exceeded, the refrigerant pump test is stopped according to a preset processing method, or the parameters of the corresponding test component that exceeds the safety threshold are adjusted.

[0094] Specifically, this embodiment can perform corresponding automatic control processing based on the type of physical quantity exceeding the safety threshold and the value exceeding the safety threshold. If the outlet pressure of the refrigerant pump is too high, the PLC can automatically reduce the speed of the refrigerant pump by adjusting the frequency of the first frequency converter, or increase the opening of the first throttle valve to reduce system resistance; if the superheat is too high, the PLC can automatically increase the opening of the first throttle valve to increase the flow rate of liquid refrigerant entering the heating tank. If there are situations that may cause equipment damage or safety hazards, such as severe overpressure, motor overcurrent, low liquid level, or temperature exceeding the limit, the PLC will immediately execute the emergency shutdown procedure: stop the refrigerant pump, cut off the heater power supply, close the key throttle valve to isolate the system, etc. At the same time, an alarm message will pop up on the touch screen, and the audible and visual alarm device will be activated to prompt the operator to check the cause of the fault.

[0095] In one embodiment, the automatic testing of the refrigerant pump may further include dynamic load testing, specifically including: in response to a user-triggered dynamic load simulation operation, the core controller periodically adjusts the second throttle valve based on preset dynamic load simulation settings, thereby applying a periodically varying gas pipeline resistance. The core controller automatically acquires the physical quantities during the periodic changes in gas pipeline resistance during the test process, and automatically plots the flow-head curves of the refrigerant pump under different gas pipeline resistances based on the acquired physical quantities.

[0096] Understandably, current methods only focus on the steady-state performance of the refrigerant pump and cannot simulate real dynamic environments. This embodiment utilizes a second throttle valve to actively and periodically modulate the gas pipeline resistance, simulating transient pressure disturbances caused by load fluctuations, valve opening and closing, or environmental changes during actual operation of the refrigeration system. This closely approximates the dynamic operating conditions of real-world applications. Since the performance of the refrigeration pump is affected by multiple factors and is prone to fluctuations during operation, the data obtained through this testing process can be used to evaluate the pump's operational stability, cavitation resistance, and control system robustness.

[0097] In one embodiment, during the dynamic load simulation, the core controller also adjusts the refrigerant pump speed in reverse phase through the first frequency converter based on the periodic adjustment of the second throttle valve. That is, when the opening of the second throttle valve decreases, the pump speed is briefly increased to maintain system pressure stability; when the valve opening increases, the pump speed is reduced accordingly.

[0098] Understandably, current testing methods typically only perform static tests or single-variable disturbances, resulting in insufficient simulation of the test conditions. Therefore, this embodiment constructs a highly realistic dynamic operating condition by using a counter-phase coordinated disturbance between the second throttle valve and the refrigerant pump speed. This simulates the dynamic changes in the interaction between the pump and pipeline resistance during sudden load changes in an actual refrigeration system, thereby achieving a comprehensive simulation of dynamically changing operating conditions.

[0099] In summary, this embodiment responds to user-triggered automatic test operations by determining the minimum pump speed, maximum pump speed, pump speed interval, minimum head, maximum head, and head interval of the automatic test. Based on the minimum head, maximum head, head interval, and the refrigeration cycle components, refrigerant is circulated sequentially from the maximum pump speed to the minimum pump speed under corresponding operating conditions. Based on the core controller, the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process are automatically acquired and saved. The current pump speed of the refrigerant pump decreases based on the pump speed interval after each saving of the physical quantity.

[0100] This embodiment performs automatic testing of refrigerant pumps at multiple speeds and heads by allowing users to preset the range and adjustment step size of the speed and head. After stabilization at each operating point, the core controller automatically collects and saves key physical quantities. This embodiment ensures the integrity and accuracy of test data through the above continuous testing process, avoiding omissions or errors caused by human operation. Furthermore, during the automatic testing process, this embodiment automatically analyzes the data and automatically plots flow-head curves at different speeds, achieving comprehensive simulation of refrigerant pump test conditions at different speeds and heads, effectively improving the testing efficiency of refrigerant pumps.

[0101] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the refrigerant pump testing method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0102] This application also proposes a refrigerant pump testing device, the device comprising:

[0103] The refrigeration cycle component is used to circulate the refrigerant under the corresponding operating conditions in response to a user-triggered test start operation.

[0104] A touch screen is used to set the parameters of the refrigeration cycle component so that the target parameters of the refrigeration cycle component are consistent with the set parameters;

[0105] The core controller is used to automatically acquire the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle.

[0106] In one possible embodiment of this application, the refrigeration cycle component further includes:

[0107] A heating tank for evaporating the refrigerant into a gaseous refrigerant having the target heat load;

[0108] A condenser is used to condense the gaseous refrigerant into a liquid refrigerant;

[0109] A liquid storage tank for storing the liquid refrigerant condensed by the condenser;

[0110] A refrigerant pump is used to transport the liquid refrigerant in the storage tank to the heating tank for refrigerant circulation under corresponding operating conditions.

[0111] This application also provides a refrigerant pump testing device; please refer to... Figure 7 The refrigerant pump testing device includes:

[0112] The cycle simulation module 10 is used to respond to the test start operation triggered by the user and perform refrigerant circulation under corresponding operating conditions based on the refrigeration cycle component in the refrigerant pump test equipment. The operating conditions of the refrigerant circulation are determined based on the target operating condition parameters of the refrigeration cycle component, and the target operating condition parameters are determined based on the target parameters set by the user on the touch screen.

[0113] The physical quantity acquisition module 20 is used to automatically acquire the corresponding physical quantities of each refrigeration cycle component during the refrigerant cycle process based on the core controller of the refrigerant pump test equipment.

[0114] Result determination module 30 is used to determine the test result of the refrigerant pump test based on the physical quantity.

[0115] In one embodiment, the cyclic simulation module further includes:

[0116] A heat load simulation submodule is used to respond to a user-triggered test start operation, based on the heater, to evaporate the refrigerant into a gaseous refrigerant with the target heat load in the heating tank, and to deliver the gaseous refrigerant to the condenser;

[0117] The condensation simulation submodule is used to condense the gaseous refrigerant into liquid refrigerant based on the condenser having the target fan speed, and store the liquid refrigerant in the storage tank;

[0118] The refrigerant pump operation simulation submodule, based on the refrigerant pump with the target pump speed, delivers the liquid refrigerant in the storage tank to the heating tank to perform refrigerant circulation under the corresponding operating conditions.

[0119] In one embodiment, the cyclic simulation module further includes:

[0120] The parameter determination submodule is used to determine the minimum pump speed, maximum pump speed, pump speed interval, minimum head, maximum head and head interval of the automatic test in response to the user-triggered automatic test operation.

[0121] The speed test submodule is used to perform refrigerant circulation under corresponding operating conditions from the maximum pump speed to the minimum pump speed based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components. Based on the core controller, it automatically acquires and saves the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process. The current pump speed of the refrigerant pump decreases based on the pump speed interval after each saving of the physical quantity.

[0122] In one embodiment, the rotational speed testing submodule further includes:

[0123] The head test unit is used to perform refrigerant circulation under corresponding operating conditions from the minimum head to the maximum head during each pump speed test of the refrigerant pump, based on the current pump speed and the refrigeration cycle components. Based on the core controller, it automatically acquires and saves the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process. The current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantity.

[0124] In one embodiment, the result determination module further includes:

[0125] The head calculation submodule is used to calculate the corresponding refrigerant pump head based on the inlet pressure and the outlet pressure.

[0126] The mapping determination submodule is used to determine the mapping relationship between the refrigerant pump head and the refrigerant pump flow rate at the target pump speed;

[0127] The result determination submodule is used to determine the test results of the refrigerant pump test based on the mapping relationship.

[0128] The refrigerant pump testing device provided in this application, employing the refrigerant pump testing method described in the above embodiments, can solve the technical problem of incomplete simulation of operating conditions in refrigerant pump testing. Compared with the prior art, the beneficial effects of the refrigerant pump testing device provided in this application are the same as those of the refrigerant pump testing method provided in the above embodiments, and other technical features in the refrigerant pump testing device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0129] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the refrigerant pump test method in the above embodiments.

[0130] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0131] The aforementioned computer-readable storage medium may be included in the refrigerant pump test equipment; or it may exist independently and not assembled into the refrigerant pump test equipment.

[0132] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the refrigerant pump testing equipment, cause the refrigerant pump testing equipment to perform the aforementioned refrigerant pump testing method.

[0133] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0134] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0135] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0136] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described refrigerant pump test method, thereby solving the technical problem of incomplete simulation of operating conditions in refrigerant pump testing. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the refrigerant pump test method provided in the above embodiments, and will not be repeated here.

[0137] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the refrigerant pump testing method described above.

[0138] The computer program product provided in this application can solve the technical problem of incomplete simulation of operating conditions in refrigerant pump testing. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the refrigerant pump testing method provided in the above embodiments, and will not be repeated here.

[0139] The user-related data involved in this application (e.g., user attribute data, user behavior data, and user geographical location, etc.; please modify the data types here according to the adaptability of the solution content) were all obtained with the user's permission or consent; that is, when this application is applied to specific products or technologies, user permission is required to obtain and process the relevant data, and the processing of the relevant data must comply with the relevant laws, regulations, and regulatory standards of the relevant countries and regions. For example, refer to... Figure 8 When it is necessary to obtain a user's current geographical location, a location acquisition prompt can be displayed on the user's terminal. After receiving confirmation from the user regarding the location acquisition prompt, the terminal can obtain the user's current geographical location.

[0140] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A refrigerant pump testing method characterized by, The method is applied to a refrigerant pump test device, and the method comprises: In response to a user-triggered test start operation, refrigerant circulation under corresponding working conditions is performed based on refrigeration cycle components in the refrigerant pump test device, wherein the working conditions of the refrigerant circulation are determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set by a user in a touch screen; Based on a core controller of the refrigerant pump test device, physical quantities corresponding to each of the refrigeration cycle components during the refrigerant circulation are automatically acquired; Based on the physical quantities, a test result of the refrigerant pump test is determined; The refrigerant pump test device comprises: Refrigeration cycle components for performing refrigerant circulation under corresponding working conditions in response to a user-triggered test start operation; A touch screen for setting parameters of the refrigeration cycle components, so that target parameters of the refrigeration cycle components are consistent with the set parameters; A core controller for automatically acquiring physical quantities corresponding to each of the refrigeration cycle components during the refrigerant circulation; The refrigeration cycle components further comprise: A heating tank for evaporating refrigerant into gaseous refrigerant with a target heat load; A condenser for condensing the gaseous refrigerant into liquid refrigerant; A liquid storage tank for storing the liquid refrigerant condensed by the condenser; A refrigerant pump for delivering the liquid refrigerant in the liquid storage tank to the heating tank to perform refrigerant circulation under corresponding working conditions; The refrigeration cycle components further comprise a second throttling valve between the heating tank and the condenser, and the refrigerant pump test further comprises automatic testing, the automatic testing of the refrigerant pump further comprises dynamic load testing, and the steps of the automatic testing comprise: In response to a user-triggered dynamic load simulation operation, the second throttling valve is periodically adjusted by the core controller based on a preset dynamic load simulation setting to apply a periodically changing gas pipeline resistance; The core controller automatically acquires the physical quantities in the test process of the periodically changing gas pipeline resistance, and automatically draws a flow-head curve of the refrigerant pump under different gas pipeline resistances based on the acquired physical quantities.

2. The method of claim 1, wherein, The refrigeration cycle components comprise a heating tank, a condenser, a liquid storage tank, a refrigerant pump, and a heater at the bottom of the heating tank, the target working condition parameters comprise a target heat load of the heating tank, a target fan speed of the condenser, and a target pump speed of the refrigerant pump, and the steps of performing refrigerant circulation under corresponding working conditions based on the refrigeration cycle components in the refrigerant pump test device in response to a user-triggered test start operation comprise: In response to a user-triggered test start operation, refrigerant is evaporated into gaseous refrigerant with a target heat load in the heating tank based on the heater, and the gaseous refrigerant is delivered to the condenser; The gaseous refrigerant is condensed into liquid refrigerant by the condenser with the target fan speed, and the liquid refrigerant is stored in the liquid storage tank; delivering the liquid refrigerant in the liquid tank to the heating tank to perform a refrigerant cycle under a corresponding working condition based on the target pump rotating speed of the refrigerant pump.

3. The method of claim 1, wherein, The refrigerant pump test further comprises an automatic test, and the steps of performing a refrigerant cycle under a corresponding working condition based on refrigeration cycle components in the refrigerant pump test device in response to a user-triggered test start operation further comprise: determining a minimum pump rotating speed, a maximum pump rotating speed, a pump rotating speed interval, a minimum head, a maximum head, and a head interval of the automatic test in response to a user-triggered automatic test operation; performing a refrigerant cycle under a corresponding working condition from the maximum pump rotating speed to the minimum pump rotating speed based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components, and automatically acquiring and saving corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller, wherein the current pump rotating speed of the refrigerant pump is reduced based on the pump rotating speed interval after each saving of the physical quantities.

4. The method of claim 3, wherein, The steps of performing a refrigerant cycle under a corresponding working condition from the maximum pump rotating speed to the minimum pump rotating speed based on the minimum head, the maximum head, the head interval, and the refrigeration cycle components, and automatically acquiring and saving corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller comprise: performing a refrigerant cycle under a corresponding working condition from the minimum head to the maximum head based on the current pump rotating speed and the refrigeration cycle components during each pump rotating speed test of the refrigerant pump, and automatically acquiring and saving corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller, wherein the current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantities.

5. The method of claim 1, wherein, The physical quantities include an inlet pressure of the refrigerant pump, an outlet pressure of the refrigerant pump, and a refrigerant pump flow, and the steps of determining a test result of the refrigerant pump test based on the physical quantities comprise: calculating a corresponding refrigerant pump head based on the inlet pressure and the outlet pressure; determining a mapping relationship between the refrigerant pump head and the refrigerant pump flow at the target pump rotating speed; determining a test result of the refrigerant pump test based on the mapping relationship.

6. A refrigerant pump testing apparatus characterized by comprising: The refrigerant pump test device is used to perform the refrigerant pump test method of claim 1, and the device comprises: a cycle simulation module configured to perform a refrigerant cycle under a corresponding working condition based on refrigeration cycle components in the refrigerant pump test device in response to a user-triggered test start operation, wherein the working condition of the refrigerant cycle is determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set by a user in a touch screen; a physical quantity acquisition module configured to automatically acquire corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on a core controller of the refrigerant pump test device. A result determining module is configured to determine a test result of the refrigerant pump test based on the physical quantity.

7. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program. The computer program is executed by a processor to implement the steps of the refrigerant pump test method in any one of claims 1 to 5.

8. A computer program product, characterised in that, The computer program product comprises a computer program. The computer program is executed by a processor to implement the steps of the refrigerant pump test method in any one of claims 1 to 5.

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