Performance analysis system and analysis method based on fluid control valve

Abstract

The invention discloses a performance analysis system and analysis method based on a fluid control valve, and relates to the technical field of valve performance analys.The performance analysis system comprises an information acquisition module, a performance analysis module and a maintenance module; the method comprises the following steps of: analyzing the pressure difference performance and the sealing performance of the fluid control valve so as to timely discover and maintain the pressure difference performance fault and the sealing performance fault of the flow control valve, thereby ensuring the accuracy of the fluid control valve, preliminarily judging the use power consumption-liquid flow correlation curve of the fluid control valve, and further judging the use power consumption-liquid flow correlation curve of the fluid control valve. And the power consumption performance of the fluid control valve is analyzed based on the use power consumption, the standby power consumption and the instantaneous power consumption, so that the power consumption fault of the fluid control valve is found in time, and the service life and the operation safety of the fluid control valve are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of valve performance analysis, and in particular to a performance analysis system and analysis method based on fluid control valves. Background Art

[0002] In large office buildings or shopping malls, fluid control valves are the core components for regulating the flow of air-conditioning refrigerant. Analyzing the performance of fluid control valves can effectively ensure valve adjustment accuracy and prevent sudden failures caused by valve aging. Therefore, this application proposes a performance analysis system and analysis method based on fluid control valves.

[0003] Prior art, such as the invention application patent with announcement number: CN107152751B, discloses an electronic expansion valve fault detection method, an air conditioner, and a computer-readable storage medium, wherein the electronic expansion valve fault detection method is applied to the electronic expansion valve of the air conditioner indoor unit, and includes the following steps: obtaining a first opening adjustment value of the electronic expansion valve, and a first preset temperature difference range of the indoor unit supply air corresponding to the first opening adjustment value; performing a first opening adjustment on the electronic expansion valve according to the first opening adjustment value; obtaining a first supply air temperature difference of the indoor unit before and after the first opening adjustment of the electronic expansion valve; when the first supply air temperature difference exceeds the first preset temperature difference range, determining that the electronic expansion valve is faulty and repairing the electronic expansion valve.

[0004] Regarding the above solution, there are the following technical problems: 1. The current technology only tests the opening adjustment of the electronic expansion valve and then analyzes the failure problem of the electronic expansion valve. The current technology does not take into account the impact of the fluid control valve in the air conditioner on the supply air temperature difference. When the fluid control has a pressure difference failure or a closing performance failure, the chilled water flow input to each branch through the main line is affected, which in turn affects the chilled water flow and temperature of each branch, thereby affecting the cooling effect of the air conditioner.

[0005] 2. Current technology lacks analysis of the power consumption performance of electronic expansion valves. Excessive power consumption will increase the workload of the electronic expansion valve and also bring a greater economic burden to users. The current technology's neglect of this aspect has led to a lack of perfection in the fault analysis of electronic expansion valves. Summary of the Invention

[0006] The purpose of this application is to provide a performance analysis system and analysis method based on fluid control valves, which solve the problems existing in the background technology.

[0007] In order to solve the above technical problems, the present application adopts the following technical solutions: In a first aspect, the present application provides a performance analysis system based on fluid control valves, including: an information acquisition module, a performance analysis module and a maintenance module.

[0008] Information acquisition module: used to obtain the working information of fluid control valves.

[0009] The performance analysis module includes a working performance analysis unit and a power consumption performance analysis unit.

[0010] The working performance analysis unit is used to establish a liquid flow-refrigeration temperature change curve based on the working information of the fluid control valve, and then determine whether the fluid control valve has a working performance deviation, thereby analyzing the pressure difference performance and sealing performance of the fluid control valve.

[0011] The power consumption performance analysis unit is used to establish a power consumption-liquid flow correlation curve based on the working information of the fluid control valve component, and then determine whether the fluid control valve component has a power consumption performance deviation, thereby analyzing the power consumption performance of the fluid control valve component.

[0012] Maintenance module: used to generate maintenance instructions based on the analysis results of the working performance analysis unit and the power consumption performance analysis unit of the fluid control valve.

[0013] In a second aspect, the present application provides a performance analysis method based on a fluid control valve, comprising: step 1, data acquisition: for acquiring working information of the fluid control valve;

[0014] Step 2, performance analysis: Based on the working information of the fluid control valve, a liquid flow-refrigeration temperature change curve is established to determine whether the fluid control valve has any working performance deviation, thereby analyzing the pressure difference performance and sealing performance of the fluid control valve; at the same time, based on the working information of the fluid control valve, a power consumption-liquid flow correlation curve is established to determine whether the fluid control valve has any power consumption performance deviation, thereby analyzing the power consumption performance of the fluid control valve.

[0015] Step 3: Maintenance: generating maintenance instructions according to the analysis results of the working performance analysis unit and the power consumption performance analysis unit of the fluid control valve component.

[0016] The beneficial effects of the present application are: 1. The present application provides a performance analysis system and analysis method based on fluid control valve components, which makes a preliminary judgment on the correlation curve between the liquid flow rate and the cooling temperature of the fluid control valve components, and then analyzes the pressure difference performance and the sealing performance of the fluid control valve components, so as to timely discover the pressure difference performance failure and the sealing performance failure of the flow control valve and repair them, thereby ensuring the accuracy of the fluid control valve components, and then makes a preliminary judgment on the correlation curve between the power consumption and liquid flow rate of the fluid control valve components, and then analyzes the power consumption performance of the fluid control valve components based on the power consumption, standby power consumption and instantaneous power consumption, thereby timely discovering the power consumption failure of the flow control valve components, thereby ensuring the service life and operation safety of the fluid control valve components.

[0017] 2. This application establishes a correlation curve between the liquid flow rate and the cooling temperature of the fluid control valve. When the correlation curve between the liquid flow rate and the cooling temperature is inconsistent with the standard curve, the main liquid flow rate, the main liquid temperature, the liquid flow rate of each branch and the liquid temperature of each branch are analyzed to promptly discover the pressure difference performance failure and the sealing performance failure of the flow control valve, so as to carry out timely maintenance and avoid the workload brought by long-term failures to the fluid control valve and other components. The accuracy of the fluid control valve is thereby ensured and the operating efficiency of the air-conditioning system is improved.

[0018] 3. This application establishes a correlation curve between the power consumption of a fluid control valve and the liquid flow rate. When the correlation curve between the power consumption of a fluid control valve and the liquid flow rate is inconsistent with the standard curve, the instantaneous power consumption, operating power consumption and standby power consumption of the fluid control valve are analyzed to promptly discover the power consumption failure of the flow control valve and perform repairs in a timely manner, thereby avoiding the power burden and energy consumption costs caused by long-term excessive power consumption and ensuring the service life and operational safety of the flow control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the system structure connection for this application.

[0021] Figure 2 The figure is a flowchart of the steps for implementing the application method. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] Reference Figure 1 As shown, the present application provides a performance analysis system based on a fluid control valve in a first aspect, comprising the following modules: an information acquisition module, a performance analysis module and a maintenance module.

[0024] Information acquisition module: used to obtain the working information of fluid control valves.

[0025] In a specific example, the working information includes the main liquid flow and liquid temperature after the fluid control valve is opened, the liquid flow and liquid temperature of each branch, the instantaneous power consumption of the switch at various opening degrees of the fluid control valve, the standby power consumption and the power consumption in use.

[0026] It should be noted that the liquid flow rate is the air-conditioning coolant flow rate or the air-conditioning refrigerant flow rate, etc.

[0027] It should be noted that after the fluid control valve is opened, the liquid flow rate and liquid temperature of the main circuit, and the liquid flow rate and liquid temperature of each branch circuit are all dynamically changing data.

[0028] It should be noted that the liquid flow of the main line and each branch is collected by installing a liquid flow meter, the liquid temperature of each branch is collected by a temperature sensor, and the power consumption of the fluid control valve is measured by connecting a power meter in series in the power supply circuit.

[0029] The performance analysis module includes a working performance analysis unit and a power consumption performance analysis unit.

[0030] The working performance analysis unit is used to establish a liquid flow-refrigeration temperature change curve based on the working information of the fluid control valve, and then determine whether the fluid control valve has a working performance deviation, thereby analyzing the pressure difference performance and sealing performance of the fluid control valve.

[0031] In a specific example, the liquid flow-refrigeration temperature variation curve is established according to the working information of the fluid control valve component. The specific process is as follows: the main liquid flow is obtained based on the working information of the fluid control valve component, and the corresponding refrigeration temperature is obtained through the temperature sensor. The main liquid flow and the refrigeration temperature are fitted into a liquid flow-refrigeration temperature correlation curve, with the main liquid flow as the horizontal coordinate and the refrigeration temperature as the vertical coordinate.

[0032] It should be noted that the cooling temperature of the cooling area is the average cooling temperature of each cooling area controlled by each branch.

[0033] The fitted liquid flow-refrigeration temperature correlation curve is compared with the standard liquid flow-refrigeration temperature correlation curve obtained by testing. If the liquid flow-refrigeration temperature correlation curve is consistent with the standard liquid flow-refrigeration temperature correlation curve, it is judged that the working performance of the fluid control valve is normal. If the liquid flow-refrigeration temperature correlation curve is inconsistent with the standard liquid flow-refrigeration temperature correlation curve, it is judged that the comprehensive performance of the fluid control valve is deviated, and the pressure difference performance and sealing performance of the fluid control valve are analyzed.

[0034] It should be noted that the overlap rate between the liquid flow-refrigeration temperature correlation curve and the liquid flow-refrigeration temperature standard correlation curve is calculated by the correlation coefficient method. When the overlap rate is greater than or equal to the set overlap rate threshold, it indicates that the liquid flow-refrigeration temperature correlation curve is consistent with the liquid flow-refrigeration temperature standard correlation curve. The correlation coefficient method is an existing technology and will not be repeated here. The overlap rate threshold is set by the relevant testing staff. The higher the overlap rate threshold, the higher the performance requirements for the fluid control valve components.

[0035] In a specific example, a standard correlation curve of liquid flow rate-refrigeration temperature is obtained through testing, and the specific process is as follows: the fluid control valve component to be tested is recorded as the target test valve component, and a working performance test is performed on the target test valve component.

[0036] It should be noted that the target test valve is of the same model as the fluid control valve for performance analysis.

[0037] Set the laboratory environment to be constant, the operating conditions of the refrigeration unit and the system pressure to be constant. After the setting is completed, a forward test is first performed, the opening of the target test valve is set to 0%, the ambient temperature at this time is recorded, and then the opening of the fluid control valve is increased in sequence according to the preset gradient, and the liquid flow and refrigeration temperature in each preset time period at each opening are recorded. After the forward test is completed, a reverse test is performed, first the opening of the target test valve is set to 100%, and then the opening of the target control valve is reduced in sequence according to the preset gradient, and the liquid flow and refrigeration temperature in each preset time period at each opening are recorded, and the test is repeated to obtain the refrigeration temperature data corresponding to each liquid flow data, and each liquid flow data is fitted with the corresponding refrigeration temperature data to obtain the liquid flow-refrigeration temperature correlation curve.

[0038] It should be noted that the preset time period is set by the relevant test personnel and must be greater than the stable working time of the target test valve.

[0039] It should be noted that the laboratory environment includes ambient temperature and ambient humidity.

[0040] It should be noted that the liquid flow data and the corresponding refrigeration temperature data are fitted by the curve fitting method. For example, the mathematical relationship between the liquid flow data and the refrigeration temperature data can be calculated by a quadratic polynomial or an exponential function, and the parameters can be optimized by the least squares method to obtain the liquid flow-refrigeration temperature correlation curve of the target test valve.

[0041] In a specific example, the pressure difference performance and sealing performance of the fluid control valve are analyzed, and the specific analysis process is as follows: based on the working information of the fluid control valve, the main liquid flow and the branch liquid flow are obtained, and recorded as the reference flow and the comparison flow respectively.

[0042] The main liquid temperature and each branch liquid temperature are obtained based on the fluid control valve component and recorded as the reference temperature and each comparison temperature respectively.

[0043] Add up the comparative flows to obtain the target comparative flow, and compare the target comparative flow with the reference flow. If the target comparative flow is not equal to the reference flow, it indicates that the pressure differential performance of the fluid control valve is faulty, and the pressure differential performance evaluation coefficient of the fluid control valve needs to be analyzed. Otherwise, it indicates that the pressure differential performance of the fluid control valve is normal, and there is no need to analyze the pressure differential performance evaluation coefficient of the fluid control valve. The pressure differential performance evaluation coefficient includes values of 1 and -1. When the pressure differential performance evaluation coefficient is 1, it indicates that the pressure differential change of the fluid control valve is normal loss and no maintenance is required. When the pressure differential performance evaluation coefficient is -1, it indicates that the pressure differential performance of the fluid control valve is faulty and maintenance is required.

[0044] Compare each comparative temperature and each comparative flow rate with each other. If each comparative temperature or each comparative flow rate is different, it is necessary to analyze the fluid control valve for the sealing performance evaluation coefficient. On the contrary, if each comparative temperature and each comparative flow rate are the same, there is no need to analyze the sealing performance evaluation coefficient of the fluid control valve. The sealing performance evaluation coefficient includes the values of 1 and -1. When the sealing performance evaluation coefficient is 1, it indicates that the change in the sealing performance of the fluid control valve is normal loss and no maintenance is required. When the sealing performance evaluation coefficient is -1, it indicates that the sealing performance of the fluid control valve is faulty and maintenance is required.

[0045] In a specific example, the pressure differential performance evaluation coefficient and the sealing performance evaluation coefficient of the fluid control valve are analyzed and obtained. The specific process is as follows: the difference between the reference flow rate and the target comparison flow rate is recorded as the reference flow loss a, and the reference flow loss threshold a′ of the fluid control valve is obtained from the production instructions of the fluid control valve. The reference flow loss and the reference flow loss threshold are substituted into the pressure differential performance evaluation model. According to the pressure differential performance evaluation model expression: Output fluid control valve differential pressure performance evaluation coefficient χ.

[0046] Obtain the difference between the maximum and minimum values of each comparison flow rate and each comparison temperature, and record them as the comparison flow loss w max and temperature loss s max The comparative flow loss threshold w′ and comparative temperature loss threshold s′ of the fluid control valve are obtained from the production instructions of the fluid control valve. The comparative flow loss, temperature loss, comparative flow loss threshold and comparative temperature loss threshold are substituted into the tightness evaluation model. According to the expression of the tightness evaluation model: The sealing performance evaluation coefficient η of the output fluid control valve.

[0047] The power consumption performance analysis unit is used to establish a power consumption-liquid flow correlation curve based on the working information of the fluid control valve component, and then determine whether the fluid control valve component has a power consumption performance deviation, thereby analyzing the power consumption performance of the fluid control valve component.

[0048] In a specific example, the power consumption-liquid flow correlation curve is established based on the working information of the fluid control valve. The specific process is as follows: the power consumption and main line liquid flow at each preset time point under each opening degree of the fluid control valve are obtained from the control center, and the power consumption and main line liquid flow at each preset time point under each opening degree of the fluid control valve are fitted into the valve power consumption-liquid flow correlation curve under each opening degree, wherein the total main line liquid flow is used as the horizontal coordinate and the power consumption of the fluid control valve is used as the vertical coordinate.

[0049] The fitted correlation curve of valve power consumption and liquid flow at each opening is compared with the standard correlation curve of valve power consumption and liquid flow at each opening obtained from the test. If the correlation curve of valve power consumption and liquid flow at each opening is consistent with the standard correlation curve of valve power consumption and liquid flow at each opening, it indicates that the power consumption performance of the fluid control valve has no deviation. If the correlation curve of valve power consumption and liquid flow at a certain opening is inconsistent with the standard correlation curve of valve power consumption and liquid flow at the corresponding opening, it indicates that the power consumption performance of the fluid control valve has deviated, and the power consumption performance evaluation coefficient of the fluid control valve needs to be analyzed.

[0050] In a specific example, a standard correlation curve of valve power consumption and liquid flow rate at various openings is obtained through testing. The specific process is as follows: the fluid control valve to be tested is recorded as the target test valve, and the power consumption performance test is performed on the target test valve.

[0051] Set the laboratory environment, refrigeration unit operating conditions and system pressure to be constant. After the settings are completed, perform a forward test on the target test valve, set the fluid control valve to standby mode, record the ambient temperature at this time, and then increase the opening of the fluid control valve in sequence according to the preset gradient, and record the power consumption data and temperature changes at each opening in the preset time period; after the recording is completed, perform a reverse test on the target test valve, first set the opening of the fluid control valve to 100%, and then reduce the opening of the target control valve in sequence according to the preset gradient, record the liquid flow data and power consumption data at each opening in the preset time period, and repeat the test to obtain the liquid flow data and corresponding power consumption data at each opening, fit the liquid flow data and corresponding power consumption data at each opening, and obtain the valve power consumption-liquid flow correlation curve at each opening.

[0052] In a specific example, the analysis obtains the comprehensive power consumption performance evaluation coefficient of the fluid control valve. The specific process is as follows: based on the working information of the fluid control valve, the standby power consumption, the use power consumption and the instantaneous power consumption of the fluid control valve at each opening are obtained and recorded as T1 respectively. i 、T2 i and T3 i , where i is the opening number of the fluid control valve, i is a positive integer, and the standby power consumption standard value, the use power consumption standard value and the instantaneous power consumption standard value of the fluid control valve under each opening are obtained from the production instructions and are recorded as T1′ respectively i 、 and Then according to the calculation formula: Calculate the power consumption deviation T of the fluid control valve under various openings i ′, and the power consumption deviation threshold of the fluid control valve under each opening is obtained from the production instructions, which is recorded as T i ″, substitute the power consumption deviation and power consumption deviation threshold of the fluid control valve at each opening into the power consumption performance evaluation model, and use the valve power consumption performance evaluation model expression: Output the power consumption performance evaluation coefficient φ of the fluid control valve under the i-th opening i When the power consumption performance evaluation coefficient is 1, it indicates that the power consumption deviation of the fluid control valve is normal loss and no maintenance is required. When the power consumption performance evaluation coefficient is -1, it indicates that the power consumption loss of the fluid control valve is abnormal and maintenance is required.

[0053] Maintenance module: used to generate maintenance instructions based on the analysis results of the working performance analysis unit and the power consumption performance analysis unit of the fluid control valve.

[0054] It should be noted that when a performance failure of a fluid control valve is detected, the control center generates a maintenance instruction and immediately pushes it to the mobile terminal of the corresponding maintenance personnel. The maintenance instruction includes the fluid control valve model and the fault type.

[0055] Reference Figure 2 As shown, the present application provides a performance analysis system and analysis method based on fluid control valve components in a second aspect, including the following steps: Step 1, data acquisition: used to obtain working information of the fluid control valve components.

[0056] Step 2, performance analysis: Based on the working information of the fluid control valve, a liquid flow-refrigeration temperature change curve is established to determine whether the fluid control valve has any working performance deviation, thereby analyzing the pressure difference performance and sealing performance of the fluid control valve; at the same time, based on the working information of the fluid control valve, a power consumption-liquid flow correlation curve is established to determine whether the fluid control valve has any power consumption performance deviation, thereby analyzing the power consumption performance of the fluid control valve.

[0057] Step 3: Maintenance: generating maintenance instructions according to the analysis results of the working performance analysis unit and the power consumption performance analysis unit of the fluid control valve component.

[0058] The present application provides a performance analysis system and analysis method based on fluid control valve components. By making a preliminary judgment on the correlation curve between the liquid flow rate and the cooling temperature of the fluid control valve component, the pressure difference performance and the sealing performance of the fluid control valve component are analyzed, so that the pressure difference performance failure and the sealing performance failure of the flow control valve are discovered and repaired in time, thereby ensuring the accuracy of the fluid control valve component. Then, a preliminary judgment is made on the correlation curve between the power consumption and liquid flow rate of the fluid control valve component, and the power consumption performance of the fluid control valve component is analyzed based on the power consumption, standby power consumption and instantaneous power consumption, thereby discovering the power consumption failure of the flow control valve component in time, thereby ensuring the service life and operational safety of the fluid control valve component.

[0059] The above content is merely an example and explanation of the concept of the present application. Technicians in this technical field may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this application, they should all fall within the scope of protection of this application.

Claims

1. A performance analysis system based on fluid control valves, characterized in that: include: Information acquisition module: used to obtain working information of fluid control valve components; The performance analysis module includes a working performance analysis unit and a power consumption performance analysis unit; The working performance analysis unit is used to establish a liquid flow-refrigeration temperature change curve based on the working information of the fluid control valve, and then determine whether the fluid control valve has a working performance deviation, thereby analyzing the pressure difference performance and sealing performance of the fluid control valve; The power consumption performance analysis unit is used to establish a correlation curve between power consumption and liquid flow rate based on the working information of the fluid control valve component, and then determine whether the fluid control valve component has a power consumption performance deviation, thereby analyzing the power consumption performance of the fluid control valve component; Maintenance module: used to generate maintenance instructions based on the analysis results of the working performance analysis unit and the power consumption performance analysis unit of the fluid control valve.

2. A performance analysis system based on fluid control valves according to claim 1, characterized in that: The working information includes the main liquid flow and liquid temperature after the fluid control valve is opened, the liquid flow and liquid temperature of each branch, the instantaneous power consumption of the switch at various opening degrees of the fluid control valve, the standby power consumption and the power consumption in use.

3. A performance analysis system based on fluid control valves according to claim 2, characterized in that: The liquid flow-refrigeration temperature change curve is established based on the working information of the fluid control valve, and the specific process is as follows: The main liquid flow is obtained based on the working information of the fluid control valve, and the corresponding refrigeration temperature is obtained through the temperature sensor. The main liquid flow and the refrigeration temperature are fitted into a liquid flow-refrigeration temperature correlation curve, with the main liquid flow as the horizontal axis and the refrigeration temperature as the vertical axis; The fitted liquid flow-refrigeration temperature correlation curve is compared with the standard liquid flow-refrigeration temperature correlation curve obtained by testing. If the liquid flow-refrigeration temperature correlation curve is consistent with the standard liquid flow-refrigeration temperature correlation curve, it is judged that the working performance of the fluid control valve is normal. If the liquid flow-refrigeration temperature correlation curve is inconsistent with the standard liquid flow-refrigeration temperature correlation curve, it is judged that the comprehensive performance of the fluid control valve is deviated, and the pressure difference performance and sealing performance of the fluid control valve are analyzed.

4. A performance analysis system based on fluid control valves according to claim 3, characterized in that: The test obtains the standard correlation curve of liquid flow rate and refrigeration temperature. The specific process is as follows: The fluid control valve component to be tested is recorded as a target test valve component, and a working performance test is performed on the target test valve component; Set the laboratory environment to be constant, the operating conditions of the refrigeration unit and the system pressure to be constant. After the setting is completed, a forward test is first performed, the opening of the target test valve is set to 0%, the ambient temperature at this time is recorded, and then the opening of the fluid control valve is increased in sequence according to the preset gradient, and the liquid flow and refrigeration temperature in each preset time period at each opening are recorded. After the forward test is completed, a reverse test is performed, first the opening of the target test valve is set to 100%, and then the opening of the target control valve is reduced in sequence according to the preset gradient, and the liquid flow and refrigeration temperature in each preset time period at each opening are recorded, and the test is repeated to obtain the refrigeration temperature data corresponding to each liquid flow data, and each liquid flow data is fitted with the corresponding refrigeration temperature data to obtain the liquid flow-refrigeration temperature correlation curve.

5. A performance analysis system based on fluid control valves according to claim 4, characterized in that: The specific analysis process of analyzing the pressure difference performance and sealing performance of the fluid control valve is as follows: Based on the working information of the fluid control valve, the main liquid flow rate and the branch liquid flow rates are obtained, which are recorded as reference flow rates and comparison flow rates respectively; Based on the fluid control valve, the main liquid temperature and the branch liquid temperature are obtained, which are recorded as the reference temperature and the comparison temperature respectively; Add up the comparative flow rates to obtain the target comparative flow rate, and compare the target comparative flow rate with the reference flow rate. If the target comparative flow rate is not equal to the reference flow rate, it indicates that the pressure differential performance of the fluid control valve is faulty, and the pressure differential performance evaluation coefficient of the fluid control valve needs to be analyzed. Otherwise, it indicates that the pressure differential performance of the fluid control valve is normal, and there is no need to analyze the pressure differential performance evaluation coefficient of the fluid control valve. The pressure differential performance evaluation coefficient includes values of 1 and -1. When the pressure differential performance evaluation coefficient is 1, it indicates that the pressure differential change of the fluid control valve is normal loss and no maintenance is required. When the pressure differential performance evaluation coefficient is -1, it indicates that the pressure differential performance of the fluid control valve is faulty and maintenance is required. Compare each comparative temperature and each comparative flow rate with each other. If each comparative temperature or each comparative flow rate is different, it is necessary to analyze the fluid control valve for the sealing performance evaluation coefficient. On the contrary, if each comparative temperature and each comparative flow rate are the same, there is no need to analyze the sealing performance evaluation coefficient of the fluid control valve. The sealing performance evaluation coefficient includes the values of 1 and -1. When the sealing performance evaluation coefficient is 1, it indicates that the change in the sealing performance of the fluid control valve is normal loss and no maintenance is required. When the sealing performance evaluation coefficient is -1, it indicates that the sealing performance of the fluid control valve is faulty and maintenance is required.

6. A performance analysis system based on fluid control valves according to claim 5, characterized in that: The analysis results in the pressure difference performance evaluation coefficient and the sealing performance evaluation coefficient of the fluid control valve. The specific process is as follows: The difference between the reference flow rate and the target comparison flow rate is recorded as the reference flow loss a. The reference flow loss threshold a′ of the fluid control valve is obtained from the production instructions of the fluid control valve. The reference flow loss and the reference flow loss threshold are substituted into the pressure difference performance evaluation model. According to the pressure difference performance evaluation model expression: Output fluid control valve pressure differential performance evaluation coefficient χ; Obtain the difference between the maximum and minimum values of each comparison flow rate and each comparison temperature, and record them as the comparison flow loss w max and temperature loss s max The comparative flow loss threshold w′ and comparative temperature loss threshold s′ of the fluid control valve are obtained from the production instructions of the fluid control valve. The comparative flow loss, temperature loss, comparative flow loss threshold and comparative temperature loss threshold are substituted into the tightness evaluation model. According to the expression of the tightness evaluation model: The sealing performance evaluation coefficient η of the output fluid control valve.

7. A performance analysis system based on fluid control valves according to claim 6, characterized in that: The above-mentioned process of establishing a correlation curve between power consumption and liquid flow rate based on the working information of the fluid control valve is as follows: Obtaining from the control center the power consumption and main line liquid flow rate at each preset time point at each opening degree of the fluid control valve, and fitting the power consumption and main line liquid flow rate at each preset time point at each opening degree of the fluid control valve to form a valve power consumption-liquid flow rate correlation curve at each opening degree, wherein the total main line liquid flow rate is used as the horizontal axis and the power consumption of the fluid control valve is used as the vertical axis; The fitted correlation curve of valve power consumption and liquid flow at each opening is compared with the standard correlation curve of valve power consumption and liquid flow at each opening obtained from the test. If the correlation curve of valve power consumption and liquid flow at each opening is consistent with the standard correlation curve of valve power consumption and liquid flow at each opening, it indicates that the power consumption performance of the fluid control valve has no deviation. If the correlation curve of valve power consumption and liquid flow at a certain opening is inconsistent with the standard correlation curve of valve power consumption and liquid flow at the corresponding opening, it indicates that the power consumption performance of the fluid control valve has deviated, and the power consumption performance evaluation coefficient of the fluid control valve needs to be analyzed.

8. The performance analysis system based on fluid control valves according to claim 7, characterized in that: The test obtains the standard correlation curve of valve power consumption and liquid flow rate at various openings. The specific process is as follows: The fluid control valve component to be tested is recorded as a target test valve component, and a power consumption performance test is performed on the target test valve component; Set the laboratory environment, refrigeration unit operating conditions and system pressure to be constant. After the settings are completed, perform a forward test on the target test valve, set the fluid control valve to standby mode, record the ambient temperature at this time, and then increase the opening of the fluid control valve in sequence according to the preset gradient, and record the power consumption data and temperature changes at each opening in the preset time period; after the recording is completed, perform a reverse test on the target test valve, first set the opening of the fluid control valve to 100%, and then reduce the opening of the target control valve in sequence according to the preset gradient, record the liquid flow data and power consumption data at each opening in the preset time period, and repeat the test to obtain the liquid flow data and corresponding power consumption data at each opening, fit the liquid flow data and corresponding power consumption data at each opening, and obtain the valve power consumption-liquid flow correlation curve at each opening.

9. The performance analysis system based on fluid control valves according to claim 8, characterized in that: The above analysis obtains the comprehensive power consumption performance evaluation coefficient of the fluid control valve component, and the specific process is as follows: Based on the working information of the fluid control valve, the standby power consumption, operating power consumption and instantaneous power consumption of the fluid control valve at each opening are obtained and recorded as T1 respectively. i 、T2 i and T3 i , where i is the opening number of the fluid control valve, i is a positive integer, and the standby power consumption standard value, the use power consumption standard value and the instantaneous power consumption standard value of the fluid control valve under each opening are obtained from the production instructions and are recorded as T1′ respectively i , T2′ i and T3′ i , and then according to the calculation formula: Calculate the power consumption deviation T of the fluid control valve under various openings i ′, and the power consumption deviation threshold of the fluid control valve under each opening is obtained from the production instructions, which is recorded as T i ″, substitute the power consumption deviation and power consumption deviation threshold of the fluid control valve at each opening into the power consumption performance evaluation model, and use the valve power consumption performance evaluation model expression: Output the power consumption performance evaluation coefficient φ of the fluid control valve under the i-th opening i When the power consumption performance evaluation coefficient is 1, it indicates that the power consumption deviation of the fluid control valve is normal loss and no maintenance is required. When the power consumption performance evaluation coefficient is -1, it indicates that the power consumption loss of the fluid control valve is abnormal and maintenance is required.

10. A method for analyzing performance of a fluid control valve component using the fluid control valve component performance analysis system according to any one of claims 1 to 9, characterized in that: include: Step 1: Data acquisition: used to obtain working information of fluid control valve components; Step 2: Performance Analysis: Based on the operating information of the fluid control valve, a liquid flow-refrigeration temperature variation curve is established to determine whether the fluid control valve has any operating performance deviation, thereby analyzing the pressure differential performance and sealing performance of the fluid control valve. Simultaneously, based on the operating information of the fluid control valve, a power consumption-liquid flow correlation curve is established to determine whether the fluid control valve has any power consumption performance deviation, thereby analyzing the power consumption performance of the fluid control valve. Step 3: Maintenance: generating maintenance instructions according to the analysis results of the working performance analysis unit and the power consumption performance analysis unit of the fluid control valve component.

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