Method and system for determining spring of high-voltage cabinet valve baffle mechanism

Abstract

The invention relates to the technical field of power equipment maintenance, in particular to a spring determination method and system for a high-voltage cabinet valve baffle mechanism, and the method comprises the steps: measuring the spring length L1 in a natural state and the spring length L2 in a working state, and calculating the spring force F through a first target formula; preliminary screening is conducted on the same type of springs of the target number; two deep screening items are sequentially carried out on the springs subjected to preliminary screening, wherein the two deep screening items comprise single spring evaluation and batch verification; and determining the springs passing through the two deep screening items as qualified target springs. The method has the beneficial effects that the spring with excellent performance can be effectively selected by measuring the length of the spring, calculating the force of the spring and carrying out correction, screening and performance testing, the problem of valve jamming caused by fatigue deformation of the spring is avoided, and the safety and reliability of the high-voltage switch cabinet are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment maintenance, in particular to a spring determination method and system for a high-voltage cabinet valve baffle mechanism. Background Art

[0002] High-voltage switchgear is a widely used distribution equipment in power systems. Its internal structure is complex and its operating environment is harsh. As a crucial component of high-voltage switchgear, the stability of the valve damper mechanism plays a vital role in the safe operation of the equipment. The performance of the spring, a core component in this mechanism, directly affects the smoothness and reliability of the valve's opening and closing.

[0003] Currently, spring selection for high-voltage switchgear valve and damper mechanisms primarily relies on standard parameters provided by the manufacturer and field experience. However, this approach has significant shortcomings. For one thing, the standard parameters provided by manufacturers are often based on ideal operating conditions and fail to fully consider complex on-site environmental factors such as temperature, humidity, and mechanical vibration. This can result in substandard spring performance in actual use. Furthermore, selection based on field experience lacks a scientific basis, making it difficult to ensure spring consistency and stability. Individual differences can easily lead to valve jamming and other faults. In actual operation, high-voltage switchgear valves have been subject to spring fatigue deformation. This resulted in inconsistent spring compression deformation when the trolley was advancing, resulting in uneven openings on both sides of the valve and causing jamming. When the trolley was withdrawn, the spring's uneven extension deformation prevented the valve from fully closing, posing a potential safety hazard. Similar problems occur frequently within the industry, posing a potential threat to the stable operation of power systems. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a method for determining a spring of a high-voltage cabinet valve baffle mechanism, comprising obtaining a length L1 of the spring in a natural state and a length L2 of the spring in a working state, and calculating a spring force F based on the length L1 in the natural state and the length L2 in the working state;

[0006] Conduct preliminary screening of the target number of springs of the same type;

[0007] Springs that pass the initial screening will undergo two in-depth screenings, including single spring evaluation and batch verification;

[0008] The springs that pass the two depth screenings are determined as qualified target springs.

[0009] As a preferred solution of the method for determining the spring of the high-voltage cabinet valve baffle mechanism of the present invention, wherein: the length L1 in the natural state is the length of the spring when no external force is applied;

[0010] The length L2 in the working state is the length of the spring when the valve baffle mechanism is working;

[0011] The first target formula is F=K*ΔL;

[0012] Where K is the spring stiffness coefficient, ΔL is the deformation of the spring, and: ΔL = L2 - L1.

[0013] As a preferred solution of the spring determination method of the high-voltage cabinet valve baffle mechanism of the present invention, wherein: the calculation of the spring force F by the first target formula also includes correcting the calculated spring force F;

[0014] Correction formula: F1=F+ΔF

[0015] Where: ΔF is the correction term, which is used to consider the influence of environmental factors on the spring force;

[0016]

[0017] Where: A is the temperature conversion coefficient, B is the humidity conversion coefficient, g is the acceleration of gravity, t i is the highest temperature of the high-voltage cabinet distribution room in a year, t0 is the maximum nominal operating temperature of the high-voltage cabinet, H i is the highest humidity in the high-voltage cabinet distribution room in one year, H0 is the maximum nominal operating humidity of the high-voltage cabinet, L1 is the spring length in the natural state, L2 is the spring length in the working state, L is the sign of the spring length, m is the spring mass, ε is the friction coefficient, and trigonometric functions and inverse trigonometric functions are all in radians.

[0018] As a preferred solution of the method for determining the spring of the high-voltage cabinet valve baffle mechanism of the present invention, the preliminary screening includes:

[0019] Fix one end of a target number of springs of the same type vertically on a horizontal support;

[0020] Obtain the length x of each spring without an external load and calculate the average value of the length x of each spring

[0021] Hanging weights of the first mass on the other ends of all the springs, and removing the weights after a first time period corresponding to the hanging of the weights of the first mass;

[0022] After a second time period corresponding to the first time period, a weight of second mass is hung on the other end of all springs, and after a third time period corresponding to the time period of hanging the weight of second mass, the weight is removed;

[0023] After a fourth time period corresponding to the third time period, obtaining the lengths X′ of all springs;

[0024] Calculating the difference ΔX between the length X′ of each spring and its corresponding length x, and determining a maximum value ΔXmax, a minimum value ΔXmin, and an average value ΔXmean from the calculated differences ΔX of the springs;

[0025] According to λ=(ΔX i max-ΔX i min) / ΔX i λ is calculated by the mean, and when λ is less than 3%, the target number of springs of the same type are determined to pass the preliminary screening.

[0026] As a preferred solution of the spring determination method of the high-voltage cabinet valve baffle mechanism of the present invention, the single spring evaluation includes:

[0027] Selecting one of the springs that have passed the preliminary screening as a first spring, and vertically fixing a first end of the first spring on a horizontal support;

[0028] Sequentially load weights of different multiples of F1 / g mass onto the second end of the first spring, and obtain the first spring length after loading the weights of each multiple of F1 / g mass for the first target time. Where n is the number of times the load has been experienced, and the initial n is 1.

[0029] The first spring length is obtained by the least square method Perform parameter fitting, where the fitting formula is y=Aη 2 +Bη+C, where A, B, C are constants, η is the mass of the weight, and y is the fitted value;

[0030] According to the parameter fitting results, the A, B, and C constants are modified until the deviation between the actual value and the fitting value of each point is less than The judgment is made by evaluating a single spring.

[0031] As a preferred solution of the method for determining the spring of the high-voltage cabinet valve baffle mechanism of the present invention, the batch verification includes:

[0032] Name all springs except the first spring as the second spring, the third spring, ..., the mth spring, where m is the total number of target springs;

[0033] vertically fixing the first ends of all springs except the first spring on the horizontal support;

[0034] Sequentially load weights of different multiples of F1 / g mass on the second end of all springs except the first spring, and obtain the lengths of all other springs after loading the weights of different multiples of F1 / g mass for different target lengths of time. Where n is the number of times the spring has been loaded, the initial value is 1, and i is the serial number of the spring to be obtained, i∈(2,m);

[0035] For all other spring lengths obtained The least squares method is used for parameter fitting, where the fitting formula is y = Aη 2 +Bη+C, where A, B, C are constants, η is the mass of the weight, and y is the fitted value;

[0036] The A, B, and C constants are modified according to the parameter fitting results until the deviation between all actual values and fitted values is less than 5%X, and the batch verification is determined to have passed.

[0037] As a preferred solution of the method for determining the springs of the high-voltage cabinet valve baffle mechanism described in the present invention, the springs of the same type are springs produced by the same manufacturer, of the same model and made of the same material.

[0038] In a second aspect, the present invention provides a method for determining a spring force of a high-voltage cabinet valve baffle mechanism, comprising: an acquisition calculation module for obtaining a length L1 of the spring in a natural state and a length L2 of the spring in a working state, and calculating a spring force F based on the length L1 in the natural state and the length L2 in the working state;

[0039] A preliminary screening module is used to perform preliminary screening of the target number of springs of the same type;

[0040] The in-depth screening module is used to conduct two in-depth screenings on springs that have passed the initial screening. The two in-depth screenings include single spring evaluation and batch verification.

[0041] A determination module is used to determine springs that pass two depth screenings as qualified target springs.

[0042] In a third aspect, the present invention provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-described method when executing the computer program.

[0043] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method described above when the computer program is executed by a processor.

[0044] Compared with existing technologies, the present invention offers the following advantages: by obtaining spring length, calculating spring force, and then performing correction, screening, and performance testing, it is possible to effectively select high-performance springs, avoiding valve jamming caused by spring fatigue deformation and improving the safety and reliability of high-voltage switchgear. Furthermore, the correction process incorporates temperature and humidity conversion factors, fully accounting for the impact of environmental factors on spring performance. The mechanical properties of the springs are fitted using the least squares method, further improving the accuracy and reliability of the selection. Furthermore, by comparing the actual obtained length with the fitted length, the spring's performance is further verified, ensuring that the selected spring meets the requirements of high-voltage switchgear. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 This is a flow chart of the method for determining the spring of the high-voltage cabinet valve baffle mechanism. DETAILED DESCRIPTION

[0047] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0048] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides a method for determining the spring of a high-voltage cabinet valve baffle mechanism, comprising:

[0049] S1. Obtain the length L1 of the spring in the natural state and the length L2 of the spring in the working state, and calculate the spring force F based on the length L1 in the natural state and the length L2 in the working state.

[0050] Furthermore, the length L1 in the natural state is the length of the spring when no external force is applied;

[0051] The length L2 in the working state is the length of the spring when the valve baffle mechanism is working;

[0052] It should be noted that to obtain the spring length L2 during operation, the high-voltage cabinet is operated to the test position, the upper and lower static contact connection parts are grounded, the trolley is pulled out, and the valve baffle mechanism is manually pushed so that the spring length L2 when the valve is fully opened is obtained. 2。

[0053] The first target formula is F=K*ΔL;

[0054] Where K is the spring stiffness coefficient, ΔL is the deformation of the spring, and: ΔL = L2 - L1.

[0055] It should be noted that the spring stiffness coefficient of K can be obtained by looking up a table (which can be achieved through existing technology and will not be described in detail again).

[0056] Furthermore, the calculating of the spring force F by the first target formula further includes correcting the calculated spring force F;

[0057] Correction formula: F1=F+ΔF

[0058] Where: ΔF is the correction term, which is used to consider the influence of environmental factors on the spring force;

[0059]

[0060] Where: A is the temperature conversion coefficient, B is the humidity conversion coefficient, g is the acceleration of gravity, t i is the highest temperature of the high-voltage cabinet distribution room in a year, t0 is the maximum nominal operating temperature of the high-voltage cabinet, H i is the highest humidity in the high-voltage cabinet distribution room in one year, H0 is the maximum nominal operating humidity of the high-voltage cabinet, L1 is the spring length in the natural state, L2 is the spring length in the working state, L is the sign of the spring length, m is the spring mass, ε is the friction coefficient, and trigonometric functions and inverse trigonometric functions are all in radians.

[0061] It should be noted that since the properties of metal materials are related to the external environment, temperature will affect elasticity, and humidity will cause electrochemical corrosion. Therefore, the confirmation of the A and B coefficients refers to the following:

[0062] For temperate zones, A is 1.0; for tropical zones, A is 1.2; for frigid zones, A is 0.86.

[0063] When the annual average humidity is 20-50%, B is 1.0; when the annual average humidity is 51-80%, B is 0.9; when the annual average humidity is 81-100%, B is 0.85.

[0064] S2. Conduct preliminary screening of the target number of springs of the same type, where the target number should be at least greater than or equal to 2 springs.

[0065] Furthermore, the springs of the same type are springs produced by the same manufacturer, of the same model and made of the same material.

[0066] It should be noted that the example calculations involved later in this embodiment are all described with the target number being 10, but this does not mean that the target number of this method must be 10.

[0067] Furthermore, the preliminary screening includes:

[0068] Fix one end of a target number of springs of the same type vertically on a horizontal support;

[0069] Obtain the length x of each spring without an external load and calculate the average value of the length x of each spring

[0070] It should be noted that when there is no external load on each spring, the lengths of the 10 springs are recorded as x1, x2, ..., x 10 , for x1, x2, …, x 10 The average value of .

[0071] Hanging weights of the first mass on the other ends of all the springs, and removing the weights after a first time period corresponding to the hanging of the weights of the first mass;

[0072] After a second time period corresponding to the first time period, a weight of second mass is hung on the other end of all springs, and after a third time period corresponding to the time period of hanging the weight of second mass, the weight is removed;

[0073] After a fourth time period corresponding to the third time period, obtaining the lengths X′ of all springs;

[0074] It should be noted that in the initial screening process, all springs are tested with hanging weights twice. The weights of the two hanging tests are and (where g is the acceleration due to gravity. There is no obvious order in the two further suspension tests.) It should be emphasized that the suspension tests corresponding to different weight masses have clear corresponding suspension durations and durations without external load.

[0075] It should be further explained that when the suspension When the mass is equal to the weight, the corresponding suspension duration is: (Where: is the average length of the spring without external load, S is the steel diameter of the wound spring (also known as the spring wire diameter), K is the spring stiffness coefficient, and h is the unit representing hours). The corresponding duration without external load is 36h. When the suspension is performed When the mass is equal to the weight, the corresponding suspension duration is: (Where: is the average length of the spring without external load, D is the spring diameter, and h is the unit representing hours. The corresponding duration without external load is 12h.

[0076] It should be further explained that the spring lengths X′1, X′2, …, X′ after the above two suspension tests are performed are obtained and recorded. 10 .

[0077] Calculating the difference ΔX between the length X′ of each spring and its corresponding length x, and determining a maximum value ΔXmax, a minimum value ΔXmin, and an average value ΔXmean from the calculated differences ΔX of the springs;

[0078] It should be noted that by calculating X'1, X'2, ..., X' 10 and the corresponding x1, x2, ..., x 10 The difference ΔX1, ΔX2, ..., ΔX 10 , ΔX1, ΔX2, …, ΔX 10 The largest median value is determined as ΔXmax, the smallest value is ΔXmin, and ΔX1, ΔX2, ..., ΔX 10 The mean value ΔXmean.

[0079] According to λ=(ΔX i max-ΔX i min) / ΔX i λ is calculated by the mean, and when λ is less than 3%, the target number of springs of the same type are determined to pass the preliminary screening.

[0080] It should be noted that when λ is less than 3%, the springs are judged to have passed the preliminary screening and enter the subsequent two in-depth screenings; otherwise, the springs of the current batch are directly judged to be unqualified.

[0081] S3. Springs that pass the initial screening are subject to two in-depth screenings, including single spring evaluation and batch verification.

[0082] Furthermore, the single spring evaluation includes:

[0083] Selecting one of the springs that have passed the preliminary screening as a first spring, and vertically fixing a first end of the first spring on a horizontal support;

[0084] Sequentially load weights of different multiples of F1 / g mass onto the second end of the first spring, and obtain the first spring length X1 after loading the weights of each multiple of F1 / g mass for the first target time. n , where n is the number of times the load has been experienced, and the initial n is 1.

[0085] It should be noted that the first target duration is 6 hours, and the different multiples include 0, 0.9, 1.1, 1.7, 2.2 and 3.5, and the corresponding spring lengths are recorded. and

[0086] The first spring length is obtained by the least square method Perform parameter fitting, where the fitting formula is y=Aη 2 +Bη+C, where A, B, C are constants, η is the mass of the weight, and y is the fitted value;

[0087] According to the parameter fitting results, the A, B, and C constants are modified until the deviation between the actual value and the fitting value of each point is less than The judgment is made by evaluating a single spring.

[0088] It should be noted that if the parameters are optimized, the deviation cannot be less than If the conditions are not met, the batch of springs is judged to be unqualified and does not need to enter the subsequent batch verification stage.

[0089] Furthermore, the batch verification includes:

[0090] Name all springs except the first spring as the second spring, the third spring, ..., the mth spring, where m is the total number of target springs;

[0091] vertically fixing the first ends of all springs except the first spring on the horizontal support;

[0092] Sequentially load weights of different multiples of F1 / g mass on the second end of all springs except the first spring, and obtain the lengths of all other springs after loading the weights of different multiples of F1 / g mass for different target lengths of time. Where n is the number of times the spring has been loaded, the initial value is 1, and i is the serial number of the spring to be obtained, i∈(2,m);

[0093] It should be noted that different multiples include 0, 0.8, 1, 1.3, 1.7, and 3.5 times. It should be emphasized that the duration of different multiples is different. The duration of loading the weight of 0 times F1 / g mass is 12 hours, and the spring length is recorded after 12 hours. The duration of loading a weight of 0.8 times the mass of F1 / g is 24 hours, and the spring length is recorded after 24 hours. The duration of loading a weight of 1 times the mass of F1 / g is 24 hours, and the spring length is recorded after 24 hours. The duration of loading a weight of 1.3 times the mass of F1 / g is 96 hours, and the spring length is recorded after 96 hours. The duration of loading a weight of 1.7 times the mass of F1 / g is 168 hours, and the spring length is recorded after 168 hours. The duration of loading a weight 3.5 times the mass of F1 / g is 336 hours, and the spring length is recorded after 336 hours.

[0094] For all other spring lengths obtained The least squares method is used for parameter fitting, where the fitting formula is y = Aη 2 +Bη+C, where A, B, C are constants, η is the mass of the weight, and y is the fitted value;

[0095] According to the parameter fitting results, the A, B, and C constants are modified until the deviation between the actual value and the fitting value is less than The batch verification was passed.

[0096] It should be noted that if the parameters are optimized, the deviation cannot be less than If the conditions are not met, the batch of springs is judged to be unqualified.

[0097] S4. The springs that pass the two depth screenings are determined as qualified target springs.

[0098] In summary, the beneficial effect of the spring determination method for the valve baffle mechanism of a high-voltage cabinet of the present invention is that by obtaining the spring length, calculating the spring force and performing correction, screening and performance testing, a spring with excellent performance can be effectively selected, thereby avoiding the problem of valve jamming caused by spring fatigue deformation, and improving the safety and reliability of the high-voltage switch cabinet. At the same time, temperature and humidity conversion coefficients are introduced in the correction process, fully considering the influence of environmental factors on spring performance, and the mechanical properties of the spring are fitted by the least squares method, further improving the accuracy and reliability of the selection. In addition, by comparing the actual obtained length and the fitted length, the performance of the spring is further verified to ensure that the selected spring can meet the use requirements of the high-voltage switch cabinet.

[0099] Example 2 is the second embodiment of the present invention, which provides a method for determining the spring of a high-voltage cabinet valve baffle mechanism. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through experiments.

[0100] Sample 1 - JS25 spring, quantity 10, manufactured by Huawei Spring Factory (or a domestic manufacturer), made of ASTM-A227 steel, wire diameter S = 0.005 m, average spring diameter D = 0.10 m, stiffness coefficient K = 231.37 N / m. Ultimate elongation is 6 times the initial unloaded state.

[0101] Sample 2 - ThyssenKrupp 1020H spring, quantity 10, made of ASTM-A227 steel, wire diameter S = 0.005 m, average spring diameter D = 0.10 m, stiffness coefficient K = 231.37 N / m. Ultimate elongation is 7 times the initial unloaded state.

[0102] Sample 3 - Huade 1020H spring, original equipment for high-voltage switchgear, quantity 1, made of ASTM-A227 steel, wire diameter S = 0.005 m, average spring diameter D = 0.10 m, stiffness coefficient K = 231.37 N / m, L1 = 0.200 m, L2 = 35 m, mass (m) = 0.3 kg. Ultimate elongation is 6 times the initial unloaded state.

[0103] Environmental factors: H i =90%, H0=75%, t i i = 37 degrees Celsius, t0 = 55 degrees Celsius, A is 1.0;

[0104] The average annual humidity in the area is 51-80%, B is taken as 0.9; the friction coefficient ε = 0.43, dimensionless; g is taken as 10.

[0105] Trigonometric and inverse trigonometric functions are expressed in radians.

[0106] According to the calculation of sample 3, ΔF = 32.0N, F1 = 34.755, F1 = F + ΔF = 66.755N.

[0107] For sample 2 - ThyssenKrupp 1020H spring:

[0108] Get the length x and average value of each spring without external load As shown in Table 1:

[0109] Table 1 (unit: m)

[0110]

[0111] After loading all 10 springs with a 43.39 kg weight for 277 hours, all 10 springs with a 0 kg weight for 36 hours, all 10 springs with a 38.05 kg weight for 84.36 hours, and all 10 springs with a 0 kg weight for 12 hours, the relevant spring lengths are obtained, as shown in Table 2:

[0112] Table 2 (unit: m)

[0113]

[0114] Determine ΔX max =0.001, ΔX min =0, ΔXmean =0.0004,

[0115] By calculating λ, we get λ=2.5%, so this batch of springs passes the preliminary screening.

[0116] Furthermore, the spring with serial number 1 is selected as the first spring. One end of the first spring is fixed vertically on the horizontal bracket, and a weight is loaded vertically in the following manner:

[0117] Load 0KG weight, last 6h, spring length Remove the weights;

[0118] Load 6KG weight, last 6h, spring length Remove the weights;

[0119] Load 7.34KG weight, last 6h, spring length Remove the weights;

[0120] Load 11.35KG weight, last 6 hours, spring length Remove the weights;

[0121] Load 14.69KG weight, last 6 hours, spring length Remove the weights;

[0122] Load 23.37KG weight, last 6h, spring length Remove the weight.

[0123] Furthermore, according to the fitting formula: L = 1*10 -35 *η 2 +0.0433η+0.200. At each loading point, the deviation between the actual length and the fitting formula is less than Therefore the batch of springs is evaluated as single springs.

[0124] Furthermore, the relevant spring lengths obtained by batch verification of the remaining springs are shown in Table 3:

[0125] Table 3 (Unit: m)

[0126]

[0127]

[0128] After fitting, the deviation between the actual value and the fitting value of each spring is less than 5% Therefore, this batch of springs was determined to be qualified target springs. This batch of springs has been used on site for 7 years without valve jamming.

[0129] For sample 1 - JS25 spring from Huawei Spring Factory:

[0130] Get the length x and average value of each spring without external load As shown in Table 4:

[0131] Table 4 (unit: m)

[0132]

[0133] After loading all 10 springs with a 43.39 kg weight for 277 hours, all 10 springs with a 0 kg weight for 36 hours, all 10 springs with a 38.05 kg weight for 84.36 hours, and all 10 springs with a 0 kg weight for 12 hours, the relevant spring lengths are obtained, as shown in Table 5:

[0134] Table 5 (unit: m)

[0135] <![CDATA[X1′]]> <![CDATA[X2′]]> <![CDATA[X3′]]> <![CDATA[X4′]]> <![CDATA[X5′]]> <![CDATA[X6′]]> <![CDATA[X7′]]> <![CDATA[X8′]]> <![CDATA[X9′]]> <![CDATA[X1′0]]> 0.207 0.211 0.207 0.205 0.206 0.203 0.200 0.203 0.210 0.200 <![CDATA[ΔX1]]> <![CDATA[ΔX2]]> <![CDATA[ΔX3]]> <![CDATA[ΔX4]]> <![CDATA[ΔX5]]> <![CDATA[ΔX6]]> <![CDATA[ΔX7]]> <![CDATA[ΔX8]]> <![CDATA[ΔX9]]> <![CDATA[ΔX 10 ]]> 0.007 0.009 0.006 0.007 0.005 0.001 0 0.003 0.011 0

[0136] Determine ΔX max =0.011, ΔX min =0, ΔX mean =0.0049,

[0137] By calculating λ, it is found that λ = 224.49%, so this batch of springs fails the preliminary screening.

[0138] This batch of springs was used on site for 9 months, and the valves began to get stuck.

[0139] Example 3 is the third embodiment of the present invention, which differs from the first two embodiments in that:

[0140] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0141] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0142] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0143] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0144] Example 4 is the fourth embodiment of the present invention. This embodiment provides a spring determination system for a high-voltage cabinet valve damper mechanism, including an acquisition and calculation module for obtaining a length L1 of the spring in a natural state and a length L2 in a working state, and calculating a spring force F based on the length L1 in the natural state and the length L2 in the working state.

[0145] A preliminary screening module is used to perform preliminary screening of the target number of springs of the same type;

[0146] The in-depth screening module is used to conduct two in-depth screenings on springs that have passed the initial screening. The two in-depth screenings include single spring evaluation and batch verification.

[0147] A determination module is used to determine springs that pass two depth screenings as qualified target springs.

[0148] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for determining the spring of a high-voltage cabinet valve baffle mechanism, characterized in that: include, Obtain the length L1 of the spring in the natural state and the length L2 of the spring in the working state, and calculate the spring force F based on the length L1 in the natural state and the length L2 in the working state; Conduct preliminary screening of the target number of springs of the same type; Springs that pass the initial screening will undergo two in-depth screenings, including single spring evaluation and batch verification; The springs that pass the two depth screenings are determined as qualified target springs.

2. The method for determining the spring of a high-voltage cabinet valve baffle mechanism according to claim 1, characterized in that: The length L1 in the natural state is the length of the spring when no external force is applied; The length L2 in the working state is the length of the spring when the valve baffle mechanism is working; The first target formula is F=K*ΔL; Where K is the spring stiffness coefficient, ΔL is the deformation of the spring, and: ΔL = L2 - L1.

3. The method for determining the spring of a high-voltage cabinet valve baffle mechanism according to claim 2, characterized in that: Calculating the spring force F by the first target formula further includes correcting the calculated spring force F; Correction formula: F1=F+ΔF Where: ΔF is the correction term, which is used to consider the influence of environmental factors on the spring force; Where: A is the temperature conversion coefficient, B is the humidity conversion coefficient, g is the acceleration of gravity, t i is the highest temperature of the high-voltage cabinet distribution room in a year, t0 is the maximum nominal operating temperature of the high-voltage cabinet, H i is the highest humidity in the high-voltage cabinet distribution room in one year, H0 is the maximum nominal operating humidity of the high-voltage cabinet, L1 is the spring length in the natural state, L2 is the spring length in the working state, L is the sign of the spring length, m is the spring mass, ε is the friction coefficient, and trigonometric functions and inverse trigonometric functions are all in radians.

4. The method for determining the spring of a high-voltage cabinet valve baffle mechanism according to claim 3, characterized in that: The preliminary screening includes, Fix one end of a target number of springs of the same type vertically on a horizontal support; Obtain the length x of each spring without an external load and calculate the average value of the length x of each spring Hanging weights of the first mass on the other ends of all the springs, and removing the weights after a first time period corresponding to the hanging of the weights of the first mass; After a second time period corresponding to the first time period, a weight of second mass is hung on the other end of all springs, and after a third time period corresponding to the time period of hanging the weight of second mass, the weight is removed; After a fourth time period corresponding to the third time period, obtaining the lengths X′ of all springs; Calculating the difference ΔX between the length X′ of each spring and its corresponding length x, and determining a maximum value ΔXmax, a minimum value ΔXmin, and an average value ΔXmean from the calculated differences ΔX of the springs; According to λ=(ΔX i max-ΔX i min)ΔX i λ is calculated by the mean, and when λ is less than 3%, the target number of springs of the same type are determined to pass the preliminary screening.

5. The method for determining the spring of a high-voltage cabinet valve baffle mechanism according to claim 4, characterized in that: The single spring evaluation includes: Selecting one of the springs that have passed the preliminary screening as a first spring, and vertically fixing a first end of the first spring on a horizontal support; Sequentially load weights of different multiples of F1 / g mass onto the second end of the first spring, and obtain the first spring length after loading the weights of each multiple of F1 / g mass for the first target time. Where n is the number of times the load has been experienced, and the initial n is 1. The first spring length is obtained by the least square method Perform parameter fitting, where the fitting formula is y=Aη 2 +Bη+C, where A, B, C are constants, η is the mass of the weight, and y is the fitted value; According to the parameter fitting results, the A, B, and C constants are modified until the deviation between the actual value and the fitting value of each point is less than 3%. The judgment is made by evaluating a single spring.

6. The method for determining the spring of a high-voltage cabinet valve baffle mechanism according to claim 5, characterized in that: The batch verification includes, Name all springs except the first spring as the second spring, the third spring, ..., the mth spring, where m is the total number of target springs; vertically fixing the first ends of all springs except the first spring on the horizontal support; Sequentially load weights of different multiples of F1 / g mass on the second end of all springs except the first spring, and obtain the lengths of all other springs after loading the weights of different multiples of F1 / g mass for different target lengths of time. Where n is the number of times the spring has been loaded, the initial value of n is 1, i is the serial number of the spring to be measured, i∈(2,m); For all other spring lengths obtained The least squares method is used for parameter fitting, where the fitting formula is y = Aη 2 +Bη+C, where A, B, C are constants, η is the mass of the weight, and y is the fitted value; According to the parameter fitting results, the A, B, and C constants are modified until the deviation between the actual values and the fitting values is less than 5%. The batch verification was passed.

7. The method for determining the spring of a high-voltage cabinet valve baffle mechanism according to any one of claims 1 to 6, characterized in that: The springs of the same type are springs produced by the same manufacturer, of the same model and made of the same material.

8. A spring determination system for a high-voltage cabinet valve baffle mechanism, characterized in that: include: An acquisition calculation module is used to obtain the length L1 of the spring in the natural state and the length L2 of the spring in the working state, and calculate the spring force F based on the length L1 in the natural state and the length L2 in the working state; A preliminary screening module is used to perform preliminary screening of the target number of springs of the same type; The in-depth screening module is used to conduct two in-depth screenings on springs that have passed the initial screening. The two in-depth screenings include single spring evaluation and batch verification. A determination module is used to determine springs that pass two depth screenings as qualified target springs.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

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

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