Method and device for determining service life of sealing ring in high-temperature liquid environment

Abstract

The embodiment of the invention provides a method and device for determining the working life of a sealing ring in a high-temperature liquid environment, and the method comprises the steps: determining a simulation condition and a simulation parameter, and determining a sealing element service life test for a plurality of groups of sealing elements based on the simulation condition and the simulation parameter; testing a plurality of groups of sealing elements at a plurality of time points based on the sealing element service life test, and determining service life test data; wherein the plurality of time points are in one-to-one correspondence with the plurality of groups of sealing elements; determining a material aging formula, and determining an aging function based on the material aging formula, a particle swarm optimization algorithm and life test data; an aging characteristic threshold is determined, and a life of the seal is determined based on the aging characteristic threshold and the aging function. The embodiment of the invention adopts a group of temperature life tests to realize the evaluation of the service life of the sealing O ring, so that the sample size and the test cost are reduced.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of testing technology, and in particular to a method for determining the service life of a sealing ring used in a high-temperature liquid environment. Background Art

[0002] For electromechanical products working in some harsh liquid environments, or products containing high-temperature liquids inside, their sealing structure is the key component that restricts the long service life of the product. How to conduct experimental research on the sealing life of the product and evaluate its sealing life during the development stage is an important task.

[0003] Sealing O-rings are a basic seal, most of which are made of various rubber materials. Under high temperature, rubber materials will produce molecular chain cross-linking and fracture damage. At the same time, high temperature will accelerate the oxidation reaction of rubber materials and increase the diffusion and penetration rate of oxygen, resulting in thermal oxidation aging. In an oily liquid environment, rubber materials have similar polarity and compatibility with oil, and chemical degradation will occur. Over time, its physical properties such as hardness, elasticity, viscosity, and strength will change, and the chemical properties such as molecular structure and composition will also change. The appearance is characterized by hardening and cracking, increased compression permanent deformation, etc., which will eventually lead to seal failure.

[0004] The existing methods for measuring the life of sealing O-rings are only applicable to storage life assessment, without considering the compression deformation caused by installation stress on rubber material sealing rings. The rubber molecular chain is in a yielding state for a long time, which will produce irreversible deformation. When the irreversible deformation cannot meet the requirements, the sealing performance will be reduced. On the other hand, the standard uses the least square method and successive approximation method to estimate multiple unknown parameters, resulting in the design of at least 4 groups of temperature storage tests, each group of tests has at least 10 test points, and each test point provides 2 sets of products, that is, a total of at least 80 sealing products can complete the storage life assessment. Therefore, a better solution is urgently needed. Summary of the invention

[0005] In view of this, the embodiments of this specification provide a method for determining the working life of a sealing ring for a high-temperature liquid environment. One or more embodiments of this specification also relate to a device for determining the working life of a sealing ring for a high-temperature liquid environment, a computing device, a computer-readable storage medium, and a computer program to solve the technical defects existing in the prior art.

[0006] According to a first aspect of an embodiment of this specification, a method for determining the service life of a sealing ring in a high-temperature liquid environment is provided, comprising: Determining simulation conditions and simulation parameters, and determining seal life tests for multiple groups of seals based on the simulation conditions and simulation parameters; Based on the seal life test, multiple groups of seals are tested at multiple time points to determine life test data; wherein the multiple time points correspond to the multiple groups of seals one by one; Determine the material aging formula, and determine the aging function based on the material aging formula, particle swarm optimization algorithm and life test data; An aging characteristic threshold is determined, and a life of the seal is determined based on the aging characteristic threshold and the aging function.

[0007] In a possible implementation, determining seal life tests for multiple groups of seals based on simulation conditions and simulation parameters includes: Determine temperature conditions, environmental conditions, and installation conditions based on simulation conditions; Determine grouping parameters, test point parameters and aging index parameters based on simulation parameters; The seal life test is determined based on temperature conditions, environmental conditions, installation conditions, grouping parameters, test point parameters and aging index parameters.

[0008] In a possible implementation, multiple groups of seals are tested at multiple time points based on a seal life test to determine life test data, including: Install multiple sets of seals based on the seal life test, and control the temperature of the multiple sets of seals to reach the target temperature; Temperature recovery is performed on multiple groups of seals at multiple time points in sequence to determine life test data.

[0009] In one possible implementation, a material aging formula is determined, including: Determine an empirical formula for aging characteristic index and aging time; wherein the empirical formula includes an initial speed parameter; Solve the initial speed parameters based on the aging temperature and determine the target speed parameters; The material aging formula is determined based on the target speed parameter and the empirical formula.

[0010] In a possible implementation, an aging function is determined based on a material aging formula, a particle swarm optimization algorithm, and life test data, including: Initialize based on particle swarm optimization algorithm and life test data to determine the optimal result; The aging function is determined by iteratively updating the material aging formula and the optimal result.

[0011] In a possible implementation, an aging function is determined by iteratively updating the material aging formula and the optimal result, including: Update the speed and position of the particle, evaluate the fitness of the particle, iteratively update the optimal result and determine the optimal particle; Determine the aging function based on the optimal particle and material aging formula.

[0012] In a possible implementation, determining an aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and an aging function, includes: An aging time is determined based on an aging characteristic threshold and an aging function; wherein the aging time is the life of the seal at a target temperature.

[0013] According to a second aspect of the embodiments of this specification, a device for determining the service life of a sealing ring in a high-temperature liquid environment is provided, comprising: A test determination module is configured to determine simulation conditions and simulation parameters, and determine a seal life test for a plurality of groups of seals based on the simulation conditions and simulation parameters; A life test module is configured to test multiple groups of seals at multiple time points based on a seal life test to determine life test data; wherein the multiple time points correspond to the multiple groups of seals one by one; A function determination module is configured to determine a material aging formula, and determine an aging function based on the material aging formula, a particle swarm optimization algorithm, and life test data; The life determination module is configured to determine an aging characteristic threshold, and determine the life of the seal based on the aging characteristic threshold and an aging function.

[0014] According to a third aspect of an embodiment of this specification, a computing device is provided, including: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment are implemented.

[0015] According to a fourth aspect of the embodiments of this specification, a computer-readable storage medium is provided, which stores computer-executable instructions, which, when executed by a processor, implement the steps of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment.

[0016] According to a fifth aspect of the embodiments of this specification, a computer program is provided, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment.

[0017] The embodiments of this specification provide a method and device for determining the working life of a sealing ring for a high-temperature liquid environment, wherein the method for determining the working life of a sealing ring for a high-temperature liquid environment includes: determining simulation conditions and simulation parameters, and determining a seal life test for multiple groups of seals based on the simulation conditions and simulation parameters; testing multiple groups of seals at multiple time points based on the seal life test to determine life test data; wherein the multiple time points correspond one-to-one to the multiple groups of seals; determining a material aging formula, and determining an aging function based on the material aging formula, a particle swarm optimization algorithm, and life test data; determining an aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and the aging function. The embodiments of this specification use a set of temperature life tests to implement a method for evaluating the working life of a sealing O-ring, reducing the sample size and test costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of a method for determining the working life of a sealing ring used in a high-temperature liquid environment provided by an embodiment of this specification; Figure 2 It is a schematic diagram of a method for determining the working life of a sealing ring used in a high-temperature liquid environment provided in one embodiment of this specification; Figure 3 It is a particle iteration schematic diagram of a method for determining the working life of a sealing ring in a high-temperature liquid environment provided by an embodiment of this specification; Figure 4 It is a schematic diagram of a sealing ring for use in a high-temperature liquid environment according to a method for determining the working life of a sealing ring provided in an embodiment of the present specification; Figure 5 It is a first structural schematic diagram of a method for determining the working life of a sealing ring used in a high-temperature liquid environment provided by an embodiment of this specification; Figure 6 It is a second structural schematic diagram of a method for determining the working life of a sealing ring used in a high-temperature liquid environment provided by an embodiment of this specification; Figure 7 It is a structural schematic diagram of a device for determining the working life of a sealing ring used in a high-temperature liquid environment provided by an embodiment of this specification; Figure 8 It is a structural block diagram of a computing device provided by an embodiment of this specification. DETAILED DESCRIPTION

[0019] Many specific details are described in the following description to facilitate a full understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of this specification, so this specification is not limited to the specific implementation disclosed below.

[0020] The terms used in one or more embodiments of this specification are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of this specification. The singular forms of "a" and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0021] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of this specification, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0022] In this specification, a method for determining the working life of a sealing ring for a high-temperature liquid environment is provided. This specification also relates to a device for determining the working life of a sealing ring for a high-temperature liquid environment, a computing device, and a computer-readable storage medium, which are described in detail one by one in the following embodiments.

[0023] See also Figure 1 , Figure 1 A flow chart of a method for determining the service life of a sealing ring for a high-temperature liquid environment provided according to an embodiment of the present specification is shown, which specifically includes the following steps.

[0024] Step 101: Determine simulation conditions and simulation parameters, and determine seal life tests for multiple groups of seals based on the simulation conditions and simulation parameters.

[0025] In one possible implementation, a seal life test for multiple groups of seals is determined based on simulation conditions and simulation parameters, including: determining temperature conditions, environmental conditions and installation conditions based on simulation conditions; determining grouping parameters, test point parameters and aging index parameters based on simulation parameters; determining the seal life test based on temperature conditions, environmental conditions, installation conditions, grouping parameters, test point parameters and aging index parameters.

[0026] In practical applications, see Figure 2, the seal should be tested for life in a high-temperature liquid environment. The temperature is the actual working temperature T of the sealing O-ring, and the liquid is configured to be consistent with the liquid environment of the sealing O-ring. Specifically, a liquid container can be placed in a normal pressure temperature box, and the temperature control point can be placed in the liquid. Installation stress simulation tooling design. Design the installation tooling according to the actual installation state of the sealing O-ring to simulate the installation stress of the sealing O-ring. Select m*n static sealing products, divide them into n groups, each group of m products, and number the products as ij, i∈ (1, 2, 3, ...n), j∈ (1, 2, 3, ...m). Considering the dispersion and effectiveness of the measured data, m should be greater than 1, and n should be greater than or equal to 10. In the test, one group of products should be tested for aging characteristics after the life test at each test point. The n groups of products represent n tests during the test process. The interval time between each test point does not need to be equal. For the aging characteristics test of rubber materials, it can be distributed according to the short interval of the test points in the early stage of the test and the long interval of the test points in the later stage. The interval time is in days. For stress relaxation, the aging characteristic index y is any aging time Stress at With initial stress For the elongation at break, the aging characteristic index y is any aging time Elongation at Elongation before aging For compression set, the aging characteristic index y is 1 minus any aging time. Compression set rate When evaluating the service life of rubber seals, it is recommended to use compression set as a characterization.

[0027] Step 102: Based on the seal life test, multiple groups of seals are tested at multiple time points to determine life test data; wherein the multiple time points correspond one-to-one to the multiple groups of seals.

[0028] In one possible implementation, multiple groups of seals are tested at multiple time points based on a seal life test to determine life test data, including: installing multiple groups of seals based on the seal life test, and controlling the temperature of the multiple groups of seals to reach a target temperature; and performing temperature recovery on the multiple groups of seals in turn at multiple time points to determine life test data.

[0029] In practical applications, see Figure 2, install n groups of products on the stress simulation fixture, tighten the fixture with bolts, and put them into a container filled with simulated liquid. Leave them in a standard laboratory environment for 3 days to allow the samples to reach swelling equilibrium in the simulated liquid, then remove the load, and allow the samples to recover freely for 24 hours in the laboratory at room temperature to complete the initial value test of the aging characteristic indicators of n groups of products. Continue to install n groups of products on the stress simulation fixture, put them into a container filled with simulated liquid, place the entire container in a normal pressure temperature test chamber, place the temperature control point in the liquid, and prevent the control point from contacting the container wall. The normal pressure temperature test chamber begins to heat up. After reaching the target temperature, the temperature is stable for 4 to 5 hours, and then the formal test begins and the timing begins. After After the time, when the first test point is reached, take out the m products of the first group, let the samples recover for 30 minutes at the standard laboratory temperature, and then test the aging characteristic indicators of the m products. , … At the time point, after completing the aging characteristic indicators of the second, third, and nth groups of products, we will obtain the test results of the aging characteristic indicators and aging time of the products at the working temperature T, that is, ( , )、( , )……( , ).

[0030] Step 103: Determine a material aging formula, and determine an aging function based on the material aging formula, a particle swarm optimization algorithm, and life test data.

[0031] In a possible implementation, determining a material aging formula includes: determining an empirical formula of an aging characteristic index and an aging time; wherein the empirical formula includes an initial speed parameter; solving the initial speed parameter based on an aging temperature to determine a target speed parameter; and determining the material aging formula based on the target speed parameter and the empirical formula.

[0032] In practical applications, see Figure 2 For rubber materials, the relationship between a certain aging characteristic index y and the aging time can be described by an empirical formula: (1) In the formula, B is the test constant; K is the speed constant, ; is the aging time, ; is an empirical constant.

[0033] The relationship between the rate constant K and the aging temperature T obeys the Arrhenius model: (2) Where E is the surface activation energy, ; R is the gas constant, ; T is the aging temperature, T; A is the frequency factor, ; Therefore, at a certain temperature, the aging rate is a fixed constant, and the relationship between the aging index and time is: (3) In a possible implementation, an aging function is determined based on a material aging formula, a particle swarm optimization algorithm, and life test data, including: initializing based on the particle swarm optimization algorithm and the life test data to determine an optimal result; iteratively updating based on the material aging formula and the optimal result to determine the aging function.

[0034] Specifically, iterative updates are performed based on the material aging formula and the optimal result to determine the aging function, including: updating the speed and position of the particle, and evaluating the fitness of the particle to iteratively update the optimal result to determine the optimal particle; and determining the aging function based on the optimal particle and the material aging formula.

[0035] See also Figure 2 , based on the particle swarm optimization algorithm and life test data, solve the function , specifically including the following steps: First, initialize: Set the number of particles N, set the maximum number of iterations M, set the current number of iterations k=0; set the iteration termination condition to: ; Set the search boundary Xlim of the test constant B, rate constant K, and empirical constant a. , , ; Within the search boundary Xlim, an initial particle swarm P(0) is randomly generated, which consists of N particles: ; Calculate the fitness of all particles , record the local optimal solution of the particle , record the global optimal particle .

[0036] Next, perform iteration: Repeat the following steps until the termination threshold is met or the number of iterations k reaches M. See the iterative demonstration for details. Figure 3 shown.

[0037] Update the velocity of each particle according to formula (4): (4) In the formula, is the particle flying speed, , is a positive acceleration coefficient, and its value range is , is the particle inertia coefficient. , are two diagonal matrices consisting of random numbers generated from a uniform distribution between [0,1].

[0038] Update the position of each particle according to formula (5): (5) Evaluate the fitness of all particles: if , update the individual optimum:

[0039] if , update the global optimum:

[0040] After the iteration is completed, the optimal particle is output. This is the optimized function parameter.

[0041] Step 104: Determine an aging characteristic threshold, and determine the life of the seal based on the aging characteristic threshold and the aging function.

[0042] In a possible implementation, determining an aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and an aging function includes: determining an aging time based on the aging characteristic threshold and the aging function; wherein the aging time is the life of the seal at a target temperature.

[0043] In practical applications, see Figure 2 , the failure critical value of the sealing O-ring aging characteristic index Substitute the solved function , calculate the aging time , That is, the estimated value of the service life of the sealing O-ring product at temperature T.

[0044] In one embodiment, a hydrogenated nitrile sealing O-ring with a size of Φ100mm×d3.55mm is installed between two sealing sleeves in a radial sealing manner to prevent external oil substances with a high temperature of 125°C from entering the sleeves. The working life test and evaluation method of the sealing O-ring includes the following steps: Step 1: Design seal life test (1) Working environment simulation: The product should be tested for life in a constant temperature liquid oil at 125°C.

[0045] (2) Installation stress simulation. According to the actual installation status of the sealing O-ring, 10 sets of installation tools are designed. Two products can be installed on each set of tools to simulate the installation stress of the sealing O-ring. Figure 4 shown.

[0046] (3) Determine the number and grouping of products. Select 20 static seal products and divide them into 10 groups, with 2 products in each group. The product numbers are shown in Table 1.

[0047] (4) Set 10 test points as shown in Table 1.

[0048] (5) Use the compression set as the aging characteristic index y to form a record table as shown in Table 1. In the table, is the initial cross-sectional diameter of the sealing O-ring, mm; is the cross-sectional diameter of the test after the test point is restored, mm; d s is the height limit of the sealing O-ring imposed by the stress simulation tooling. Figure 5 , Figure 6 As shown in the tooling design drawing, , due to the existence of processing errors, d s The actual measurement value of each tooling set is not the design value on the drawing. All the above dimensions are measured to an accuracy of 0.01mm. Then calculate the permanent deformation of the sealing O-ring according to formula (7) . is the average of the y values ​​of each group of 2 products.

[0049] (7) Table 1. Test record of sealing O-ring 125℃ thermal medium life test

[0050] Step 2: Conduct seal life test (1) Complete the initial value test of 10 groups of product aging characteristic indicators, as shown in Table 2.

[0051] (2) Install 10 groups of products on 10 sets of stress simulation fixtures, place them in a container filled with simulated liquid, place the entire container in a normal pressure temperature test chamber, place the temperature control point in the liquid, and prevent the control point from contacting the container wall.

[0052] (3) The normal pressure temperature test chamber starts to heat up. After reaching 125°C, the temperature is stabilized for 2 hours. Then the formal test begins and the timing starts.

[0053] (4) After 2 days, when the first test point is reached, take out the first group of products and allow the samples to recover at the standard laboratory temperature for 30 minutes. Then, test the cross-sectional diameters of the two products respectively.

[0054] (5) At the 4th, 7th, ... 67th day test points after the timing, complete the measurement of the recovered cross-sectional diameter of the 2nd, 3rd, ... 10th groups of products, and calculate the compression set of each group. , the specific data are shown in Table 2.

[0055] Table 2 Sealing O-ring 125℃ thermal medium life test record - measured values

[0056] Step 3: Evaluate the service life of the seal ring based on the particle swarm optimization algorithm.

[0057] (1) For rubber materials, the relationship between a certain aging characteristic index y and aging time can be described by an empirical formula: (1) In the formula, B is the test constant; K is the speed constant, ; is the aging time, ; is an empirical constant.

[0058] The relationship between the rate constant K and the aging temperature T obeys the Arrhenius model: (2) Where E is the surface activation energy, ; R is the gas constant, ; T is the aging temperature, T; A is the frequency factor, ; Therefore, at a certain temperature, the aging rate is a fixed constant, and the relationship between the aging index and time is: (3) (2) Based on the particle swarm optimization algorithm and life test data, solve the function , specifically including the following steps: (2.1) Initialization (2.1.1) Set the number of particles N, the maximum number of iterations M, and the current number of iterations k = 0; set the iteration termination condition to: ; (2.1.2) Set the search boundary Xlim of the test constant B, rate constant K, and empirical constant a. , , ; (2.1.3) Within the search boundary Xlim, an initial particle swarm P(0) is randomly generated, which consists of N particles: ; (2.1.4) Calculate the fitness of all particles , record the local optimal solution of the particle , record the global optimal particle .

[0059] (2.2) Iteration: Repeat the following steps until the termination threshold is met or the number of iterations k reaches M.

[0060] (2.2.1) Update the velocity of each particle according to formula (4): (4) In the formula, is the particle flying speed, , is a positive acceleration coefficient, and its value range is , is the particle inertia coefficient. , are two diagonal matrices consisting of random numbers generated from a uniform distribution between [0,1].

[0061] (2.2.2) Update the position of each particle according to formula (5): (5) (2.2.3) Evaluate the fitness of all particles: if , update the individual optimum:

[0062] if , update the global optimum:

[0063] (2.3) After the iteration is completed, the optimal particle is output. is the optimized function parameter, where =1.0393; =0.0244; =0.65, that is, at 125°C, the relationship between the compression permanent deformation retention rate and time of the hydrogenated nitrile rubber sealing O-ring aging index is: (6) (3) The critical value of the failure of the sealing O-ring aging characteristic index =0.5Substitute into the obtained formula (7) to calculate the aging time , then 187 days is the estimated value of the service life of the sealing O-ring product in 125℃ high temperature oil medium.

[0064] (7) The embodiments of this specification provide a method and device for determining the working life of a sealing ring for a high-temperature liquid environment, wherein the method for determining the working life of a sealing ring for a high-temperature liquid environment includes: determining simulation conditions and simulation parameters, and determining a seal life test for multiple groups of seals based on the simulation conditions and simulation parameters; testing multiple groups of seals at multiple time points based on the seal life test to determine life test data; wherein the multiple time points correspond one-to-one to the multiple groups of seals; determining a material aging formula, and determining an aging function based on the material aging formula, a particle swarm optimization algorithm, and life test data; determining an aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and the aging function. The embodiments of this specification use a set of temperature life tests to implement a method for evaluating the working life of a sealing O-ring, and the sample size and test cost will be reduced by at least 3 times at the same time.

[0065] Corresponding to the above method embodiment, this specification also provides an embodiment of a device for determining the working life of a sealing ring in a high-temperature liquid environment. Figure 7 FIG. 1 is a schematic diagram showing a structure of a device for determining the service life of a sealing ring in a high-temperature liquid environment provided by an embodiment of the present specification. Figure 7 As shown, the device comprises: A test determination module 701 is configured to determine simulation conditions and simulation parameters, and determine a seal life test for multiple groups of seals based on the simulation conditions and simulation parameters; The life test module 702 is configured to test multiple groups of seals at multiple time points based on the seal life test to determine life test data; wherein the multiple time points correspond to the multiple groups of seals one by one; The function determination module 703 is configured to determine a material aging formula, and determine an aging function based on the material aging formula, a particle swarm optimization algorithm and life test data; The life determination module 704 is configured to determine an aging characteristic threshold, and determine the life of the seal based on the aging characteristic threshold and the aging function.

[0066] In a possible implementation, determining seal life tests for multiple groups of seals based on simulation conditions and simulation parameters includes: Determine temperature conditions, environmental conditions, and installation conditions based on simulation conditions; Determine grouping parameters, test point parameters and aging index parameters based on simulation parameters; The seal life test is determined based on temperature conditions, environmental conditions, installation conditions, grouping parameters, test point parameters and aging index parameters.

[0067] In a possible implementation, multiple groups of seals are tested at multiple time points based on a seal life test to determine life test data, including: Install multiple sets of seals based on the seal life test, and control the temperature of the multiple sets of seals to reach the target temperature; Temperature recovery is performed on multiple groups of seals at multiple time points in sequence to determine life test data.

[0068] In one possible implementation, a material aging formula is determined, including: Determine an empirical formula for aging characteristic index and aging time; wherein the empirical formula includes an initial speed parameter; Solve the initial speed parameters based on the aging temperature and determine the target speed parameters; The material aging formula is determined based on the target speed parameter and the empirical formula.

[0069] In a possible implementation, an aging function is determined based on a material aging formula, a particle swarm optimization algorithm, and life test data, including: Initialize based on particle swarm optimization algorithm and life test data to determine the optimal result; The aging function is determined by iteratively updating the material aging formula and the optimal result.

[0070] In a possible implementation, an aging function is determined by iteratively updating the material aging formula and the optimal result, including: Update the speed and position of the particle, evaluate the fitness of the particle, iteratively update the optimal result and determine the optimal particle; Determine the aging function based on the optimal particle and material aging formula.

[0071] In a possible implementation, determining an aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and an aging function, includes: An aging time is determined based on an aging characteristic threshold and an aging function; wherein the aging time is the life of the seal at a target temperature.

[0072] The embodiments of this specification provide a method and device for determining the working life of a sealing ring for a high-temperature liquid environment, wherein the device for determining the working life of a sealing ring for a high-temperature liquid environment includes: determining simulation conditions and simulation parameters, and determining a seal life test for multiple groups of seals based on the simulation conditions and simulation parameters; testing multiple groups of seals at multiple time points based on the seal life test to determine life test data; wherein the multiple time points correspond one-to-one to the multiple groups of seals; determining a material aging formula, and determining an aging function based on the material aging formula, a particle swarm optimization algorithm, and life test data; determining an aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and the aging function. The embodiments of this specification use a set of temperature life tests to implement a method for evaluating the working life of a sealing O-ring, reducing the sample size and test costs.

[0073] The above is a schematic scheme of a device for determining the working life of a sealing ring in a high-temperature liquid environment of this embodiment. It should be noted that the technical scheme of the device for determining the working life of a sealing ring in a high-temperature liquid environment and the technical scheme of the method for determining the working life of a sealing ring in a high-temperature liquid environment are of the same concept, and the details not described in detail in the technical scheme of the device for determining the working life of a sealing ring in a high-temperature liquid environment can be referred to the description of the technical scheme of the method for determining the working life of a sealing ring in a high-temperature liquid environment.

[0074] Figure 8 The structure block diagram of a computing device 800 provided according to an embodiment of the present specification is shown. The components of the computing device 800 include but are not limited to a memory 810 and a processor 820. The processor 820 is connected to the memory 810 via a bus 830, and the database 850 is used to store data.

[0075] The computing device 800 also includes an access device 840 that enables the computing device 800 to communicate via one or more networks 860. Examples of these networks include a public switched telephone network (PSTN), a local area network (LAN), a wide area network (WAN), a personal area network (PAN), or a combination of communication networks such as the Internet. The access device 840 may include one or more of any type of network interface (e.g., a network interface card (NIC)) of wired or wireless, such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, a world-wide interoperability for microwave access (Wi-MAX) interface, an Ethernet interface, a universal serial bus (USB) interface, a cellular network interface, a Bluetooth interface, and a near field communication (NFC).

[0076] In one embodiment of the present specification, the above components of the computing device 800 and Figure 8 Other components not shown in the figure may also be connected to each other, for example, via a bus. It should be understood that Figure 8The computing device structure block diagram shown is only for the purpose of illustration, and is not intended to limit the scope of this specification. Those skilled in the art can add or replace other components as needed.

[0077] The computing device 800 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., a tablet computer, a personal digital assistant, a laptop computer, a notebook computer, a netbook, etc.), a mobile phone (e.g., a smart phone), a wearable computing device (e.g., a smart watch, smart glasses, etc.), or other types of mobile devices, or a stationary computing device such as a desktop computer or a personal computer (PC). The computing device 800 may also be a mobile or stationary server.

[0078] The processor 820 is used to execute the following computer executable instructions, which, when executed by the processor, implement the steps of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment. The above is a schematic scheme of a computing device of this embodiment. It should be noted that the technical scheme of the computing device and the technical scheme of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment belong to the same concept. For details not described in detail in the technical scheme of the computing device, please refer to the description of the technical scheme of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment.

[0079] An embodiment of the present specification also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment.

[0080] The above is a schematic scheme of a computer-readable storage medium of this embodiment. It should be noted that the technical scheme of the storage medium and the technical scheme of the method for determining the working life of a sealing ring for a high-temperature liquid environment described above belong to the same concept, and the details not described in detail in the technical scheme of the storage medium can be found in the description of the technical scheme of the method for determining the working life of a sealing ring for a high-temperature liquid environment described above.

[0081] An embodiment of the present specification also provides a computer program, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned method for determining the working life of a sealing ring for a high-temperature liquid environment.

[0082] The above is a schematic scheme of a computer program of this embodiment. It should be noted that the technical scheme of the computer program and the technical scheme of the method for determining the working life of a sealing ring for a high-temperature liquid environment are of the same concept, and the details not described in detail in the technical scheme of the computer program can be found in the description of the technical scheme of the method for determining the working life of a sealing ring for a high-temperature liquid environment.

[0083] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0084] The computer instructions include computer program codes, which may be in source code form, object code form, executable files or some intermediate forms, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0085] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of this specification are not limited by the order of the actions described, because according to the embodiments of this specification, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of this specification.

[0086] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] The preferred embodiments of this specification disclosed above are only used to help explain this specification. The optional embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the embodiments of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the embodiments of this specification, so that technicians in the relevant technical field can well understand and use this specification. This specification is only limited by the claims and their full scope and equivalents.

Claims

1. A method for determining the working life of a sealing ring used in a high-temperature liquid environment, characterized in that: include: Determining simulation conditions and simulation parameters, and determining seal life tests for multiple groups of seals based on the simulation conditions and the simulation parameters; Based on the seal life test, the plurality of seal groups are tested at a plurality of time points to determine life test data; wherein the plurality of time points correspond one to one with the plurality of seal groups; Determine a material aging formula, and determine an aging function based on the material aging formula, a particle swarm optimization algorithm and the life test data; An aging characteristic threshold is determined, and a life of the seal is determined based on the aging characteristic threshold and the aging function.

2. The method according to claim 1, characterized in that The determining of the seal life test for the plurality of seal groups based on the simulation conditions and the simulation parameters comprises: determining temperature conditions, environmental conditions, and installation conditions based on the simulated conditions; Determine grouping parameters, test point parameters and aging index parameters based on the simulation parameters; A seal life test is determined based on the temperature condition, the environmental condition, the installation condition, the grouping parameter, the test point parameter and the aging index parameter.

3. The method according to claim 1, characterized in that The step of testing the plurality of groups of seals at a plurality of time points based on the seal life test to determine life test data includes: Installing the plurality of seals based on the seal life test, and controlling the temperature of the plurality of seals to reach a target temperature; The plurality of sealing components are subjected to temperature recovery in sequence at a plurality of time points to determine life test data.

4. The method according to claim 1, characterized in that The formula for determining material aging includes: Determine an empirical formula for the aging characteristic index and the aging time; wherein the empirical formula includes an initial speed parameter; Solving the initial speed parameter based on the aging temperature to determine the target speed parameter; A material aging formula is determined based on the target speed parameter and the empirical formula.

5. The method according to claim 1, characterized in that: The determining of the aging function based on the material aging formula, the particle swarm optimization algorithm and the life test data comprises: Initializing based on the particle swarm optimization algorithm and the life test data to determine the optimal result; An aging function is determined by iteratively updating the material aging formula and the optimal result.

6. The method according to claim 5, characterized in that The iterative updating based on the material aging formula and the optimal result to determine the aging function includes: Updating the speed and position of the particle, and evaluating the fitness of the particle to iteratively update the optimal result to determine the optimal particle; An aging function is determined based on the optimal particles and the material aging formula.

7. The method according to claim 1, characterized in that The determining of the aging characteristic threshold, and determining the life of the seal based on the aging characteristic threshold and the aging function, comprises: An aging time is determined based on the aging characteristic threshold and the aging function; wherein the aging time is the life of the seal at a target temperature.

8. A device for determining the working life of a sealing ring used in a high-temperature liquid environment, characterized in that: include: A test determination module, configured to determine simulation conditions and simulation parameters, and determine a seal life test for a plurality of groups of seals based on the simulation conditions and the simulation parameters; A life test module, configured to test the plurality of seal groups at a plurality of time points based on the seal life test to determine life test data; wherein the plurality of time points correspond one-to-one to the plurality of seal groups; A function determination module is configured to determine a material aging formula, and determine an aging function based on the material aging formula, a particle swarm optimization algorithm and the life test data; The life determination module is configured to determine an aging characteristic threshold, and determine the life of the seal based on the aging characteristic threshold and the aging function.

9. A computing device, characterized in that include: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the method for determining the working life of a sealing ring for a high-temperature liquid environment as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the method for determining the service life of a sealing ring for a high-temperature liquid environment as described in any one of claims 1 to 7.

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