Hydraulic pipe fatigue mitigation method, device and hydraulic pipe system

Abstract

The present application relates to the technical field of hydraulic system, provide a kind of hydraulic pipeline fatigue relieving method, device and hydraulic pipeline system, the method introduces the corresponding relationship between the different rotational speed of predetermined variable frequency pump, the different opening number of side branch pipe and the pipeline pressure at the outlet of pipe joint connected by the driving equipment of hydraulic pipeline system, filter out the combination satisfying minimum pressure demand, can quickly meet the pressure regulation demand of hydraulic pipeline system. By obtaining the normal stress intensity of main pipeline under each combination configuration, and selecting the target combination with the minimum normal stress intensity of main pipeline from it to configure the hydraulic pipeline system, the main pipeline can be guaranteed to have the minimum normal stress intensity, effectively relieving the fatigue fracture problem caused by excessive normal stress of main pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic systems, and in particular to a hydraulic pipeline fatigue alleviating method, device and hydraulic pipeline system. BACKGROUND

[0002] The hydraulic pipeline system is an important component of the hydraulic system. Under the excitation of high-strength pressure and pulsating pressure of the variable frequency pump, the main pipeline of the hydraulic pipeline system, i.e. the pipeline connected to the outlet of the variable frequency pump, often bears a strong normal stress. The normal stress produces a strong pulling action in the direction perpendicular to the main pipeline. After a long time of repeated pulling, fatigue fracture of the main pipeline will occur, which will cause cracks in the main pipeline and oil leakage, seriously affecting the safe operation of the hydraulic system.

[0003] Therefore, in the design process of the hydraulic pipeline system, it is generally required to avoid problems such as excessive normal stress of the main pipeline. However, under complex multi-working condition operating environment, fatigue fracture of the main pipeline caused by the normal stress will still occur.

[0004] Therefore, there is an urgent need to provide an effective hydraulic pipeline fatigue alleviating method. SUMMARY

[0005] The present application provides a hydraulic pipeline fatigue alleviating method, device and hydraulic pipeline system to solve the defects in the prior art.

[0006] The present application provides a hydraulic pipeline fatigue alleviating method, comprising:

[0007] obtaining the minimum pressure requirement of the hydraulic pipeline system, wherein one end of the main pipeline of the hydraulic pipeline system is connected to a plurality of branch pipelines away from the variable frequency pump;

[0008] determining the combination of the speed gear of the variable frequency pump and the opening number of the branch pipeline when the pipeline pressure is greater than or equal to the minimum pressure requirement based on the corresponding relationship between the different speed gears of the variable frequency pump, the different opening numbers of the branch pipeline and the pipeline pressure at the outlet of the pipe joint connected to the driving device of the hydraulic pipeline system;

[0009] iterating through each combination, configuring the hydraulic pipeline system and obtaining the normal stress intensity of the main pipeline under each combination configuration, and selecting a target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

[0010] According to the hydraulic pipeline fatigue alleviating method provided by the present application, after the target combination with the minimum normal stress intensity of the main pipeline is selected to configure the hydraulic pipeline system, the following steps are included:

[0011] obtaining the current pipeline pressure at the outlet of the pipe joint under the target combination configuration;

[0012] if the current pipeline pressure is less than the minimum pressure requirement, selecting a combination of the speed gears of the variable frequency pump and the open numbers of the bypass pipelines that makes the normal stress intensity of the main pipeline greater than and close to the normal stress intensity corresponding to the target combination, and updating the target combination to configure the hydraulic pipeline system;

[0013] continuing to acquire the current pipeline pressure, and iteratively updating the process of configuring the hydraulic pipeline system by the target combination until the current pipeline pressure is greater than or equal to the minimum pressure requirement.

[0014] According to the hydraulic pipeline fatigue alleviation method provided by the application, the minimum pressure requirement of the hydraulic pipeline system is acquired, comprising:

[0015] receiving the minimum pressure requirement input by the user after the working condition corresponding to the hydraulic pipeline system is changed.

[0016] According to the hydraulic pipeline fatigue alleviation method provided by the application, the corresponding relationship is determined based on the following steps:

[0017] For a sample hydraulic pipeline system with the same scale as the hydraulic pipeline system, the sample pipeline pressure at the outlet of the sample pipe joint connected to the sample driving device of the sample hydraulic pipeline system is measured respectively for different speed gears of the sample variable frequency pump in the sample hydraulic pipeline system and different open numbers of the sample bypass pipeline connected to one end of the sample main pipeline of the sample hydraulic pipeline system away from the sample variable frequency pump, and the corresponding relationship is determined.

[0018] The application further provides a hydraulic pipeline fatigue alleviation device, comprising:

[0019] a minimum pressure requirement acquisition module configured to acquire a minimum pressure requirement of a hydraulic pipeline system, wherein one end of a main pipeline of the hydraulic pipeline system is connected to a plurality of bypass pipelines;

[0020] a combination determination module configured to determine, based on a corresponding relationship between different speed gears of a variable frequency pump, different open numbers of bypass pipelines and pipeline pressures at the outlet of a pipe joint connected to a driving device of a hydraulic pipeline system, a combination of the speed gears of the variable frequency pump and the open numbers of the bypass pipelines that satisfies a condition that a pipeline pressure is greater than or equal to the minimum pressure requirement;

[0021] a fatigue alleviation module configured to traverse combinations, configure the hydraulic pipeline system by each combination, determine a normal stress intensity of the main pipeline under each combination, and select a target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

[0022] The application further provides a hydraulic pipeline system, comprising a server, a main pipeline, a variable frequency pump, a driving device, a pipe joint, a normal stress sensor, a plurality of branch pipelines and an on-off valve connected with each branch pipeline, wherein the server is connected with the normal stress sensor, the variable frequency pump and the on-off valve respectively.

[0023] One end of the main pipeline is connected with the variable frequency pump, and the other end of the main pipeline is connected with one end of each branch pipeline.

[0024] The driving device is connected with the variable frequency pump and one end of the pipe joint respectively, and the other end of the pipe joint is connected with the other end of each branch pipeline.

[0025] The normal stress sensor is arranged in the main pipeline and used for collecting the normal stress intensity of the main pipeline and transmitting the normal stress intensity to the server.

[0026] The server is used for executing the above-mentioned hydraulic pipeline fatigue relieving method.

[0027] According to the hydraulic pipeline system provided by the application, further comprising a pressure sensor arranged in a pipeline between the pipe joint and each branch pipeline, and the pressure sensor is connected with the server.

[0028] The pressure sensor is used for collecting the current pipeline pressure at the outlet of the pipe joint under the target combination configuration and transmitting the current pipeline pressure to the server.

[0029] The server is further used for selecting a combination in which the normal stress intensity of the main pipeline is greater than and close to the normal stress intensity corresponding to the target combination if the current pipeline pressure is less than the minimum pressure requirement, updating the target combination to configure the hydraulic pipeline system, continuously acquiring the current pipeline pressure, iteratively updating the process of configuring the hydraulic pipeline system by the target combination until the current pipeline pressure is greater than or equal to the minimum pressure requirement.

[0030] According to the hydraulic pipeline system provided by the application, the server is configured with an input device, and the server is connected with the input device.

[0031] The input device is used for collecting the minimum pressure requirement input by a user after the working condition corresponding to the hydraulic pipeline system is changed.

[0032] The application further provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the hydraulic pipeline fatigue relieving method according to any one of the above-mentioned methods when executing the program.

[0033] The application further provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the hydraulic pipeline fatigue alleviating method according to any one of the above.

[0034] The application further provides a computer program product comprising a computer program which, when executed by a processor, implements the hydraulic pipeline fatigue alleviating method according to any one of the above.

[0035] The hydraulic pipeline fatigue alleviating method, device and hydraulic pipeline system provided by the application first acquire the minimum pressure requirement of the hydraulic pipeline system, the main pipeline of the hydraulic pipeline system is connected with a plurality of branch pipelines at an end far from the variable frequency pump; then based on the corresponding relationship between different rotating speed gears of the variable frequency pump, different opening numbers of the branch pipelines and the pipeline pressure at the outlet of the pipe joint connected with the driving equipment of the hydraulic pipeline system, the combination of the rotating speed gear of the variable frequency pump and the opening number of the branch pipeline satisfying the condition that the pipeline pressure is greater than or equal to the minimum pressure requirement is determined; finally, each combination is traversed, the hydraulic pipeline system is configured, the normal stress intensity of the main pipeline under each combination configuration is acquired, and the target combination with the minimum normal stress intensity of the main pipeline is selected to configure the hydraulic pipeline system. The method introduces the predetermined corresponding relationship, filters out the combination satisfying the minimum pressure requirement, and can quickly meet the pressure regulation requirement of the hydraulic pipeline system. By acquiring the normal stress intensity of the main pipeline under each combination configuration and selecting the target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system, the main pipeline can have the minimum normal stress intensity, and the fatigue rupture problem of the main pipeline caused by excessive normal stress can be effectively alleviated. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description can also be obtained by those skilled in the art without creative labor.

[0037] Figure 1 is a flowchart of the hydraulic pipeline fatigue alleviating method provided by the application;

[0038] Figure 2 is one of the structural schematic diagrams of the hydraulic pipeline system provided by the application;

[0039] Figure 3 is a structural schematic diagram of the hydraulic pipeline fatigue alleviating device provided by the application;

[0040] Figure 4 is another structural schematic diagram of the hydraulic pipeline system provided by the application;

[0041] Figure 5 Figure 3 is a structural schematic diagram of a hydraulic pipeline system provided by the present application;

[0042] Figure 6 Figure 4 is a structural schematic diagram of an electronic device provided by the present application. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0044] Figure 1 Figure 1 is a flow schematic diagram of a hydraulic pipeline fatigue alleviating method provided in an embodiment of the present application, as shown in the figure, the method comprises the following steps: Figure 1

[0045] S1, obtaining the minimum pressure requirement of a hydraulic pipeline system, wherein one end of a main pipeline of the hydraulic pipeline system is connected with a plurality of branch pipelines away from a variable frequency pump;

[0046] S2, determining the combination of the speed gear of the variable frequency pump and the opening number of the branch pipeline when the pipeline pressure is greater than or equal to the minimum pressure requirement based on the corresponding relationship between the different speed gears of the variable frequency pump, the different opening numbers of the branch pipeline and the pipeline pressure at the outlet of the pipe joint connected with the driving device of the hydraulic pipeline system;

[0047] S3, traversing each combination, configuring the hydraulic pipeline system and obtaining the normal stress intensity of the main pipeline under each combination configuration, and selecting the target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

[0048] Specifically, the hydraulic pipeline fatigue alleviating method provided in the embodiment of the present application has a hydraulic pipeline fatigue alleviating device as the execution subject, and the device can be configured in a computer. The computer can be a local computer or a cloud computer, and the local computer can be a computer, a tablet and the like, which is not specifically limited here.

[0049] ​First, step S1 is executed to obtain the minimum pressure requirement of the hydraulic pipeline system. This minimum pressure requirement can be set by the user and can be adapted to the corresponding operating conditions of the hydraulic pipeline system. That is, there is a one-to-one correspondence between the operating conditions of the hydraulic pipeline system and its minimum pressure requirement. The hydraulic system in which the hydraulic pipeline system is located can be the power system of the target object, such as a ship or aircraft. In this case, the hydraulic system in which the hydraulic pipeline is located is the ship's hydraulic system, aircraft's hydraulic system, etc.

[0050] like Figure 2 As shown, the hydraulic pipeline system in this embodiment of the invention includes hydraulic pipelines and hydraulic equipment connected to the hydraulic pipelines. The hydraulic equipment may include a variable frequency pump 21 and a drive device 22. The variable frequency pump 21 is connected to the drive device 22. The hydraulic pipeline may include a main pipeline 23 connected to the outlet of the variable frequency pump 21 and multiple branch pipelines 24 connected to the end of the main pipeline 23 away from the variable frequency pump 21. Each branch pipeline 24 is connected to an on / off valve 25, which is used to control the opening or closing of the branch pipeline 24, thereby alleviating the high pressure and pulsating pressure excitation of the main pipeline. When the on / off valve 25 is open, the branch pipeline 24 is open; when the on / off valve 25 is closed, the branch pipeline 24 is closed. The total number of branch pipelines 24 can be set according to actual conditions and is not specifically limited here.

[0051] The hydraulic piping system also includes a pipe fitting 26 connected to the drive unit 22, and the pipe fitting 26 is connected to each branch pipe 24 via a pipe.

[0052] In addition to the main pipe and the branch pipes, the hydraulic piping also includes other pipes, such as pipes for connecting the fitting 26 to each branch pipe 24.

[0053] A normal stress sensor 27 can be installed inside the main pipe 23. The normal stress sensor 27 can be used to measure the normal stress intensity of the main pipe.

[0054] Then, step S2 is executed, which uses the correspondence between the different speed settings of the variable frequency pump 21, the different number of openings of the side branch pipe 24, and the pipe pressure at the outlet of the pipe joint 26 connected to the drive device 22 of the hydraulic pipeline system to determine the combination of the speed setting of the variable frequency pump and the number of openings of the side branch pipe when the pipe pressure is greater than or equal to the minimum pressure requirement.

[0055] Here, the variable frequency pump 21 has multiple different rotating speed gears, and the opening number of the bypass pipeline 24 can also be adjusted. The rotating speed gear of the variable frequency pump 21 and the opening number of the bypass pipeline 24 both affect the pipeline pressure at the outlet of the pipe joint 26 connected with the driving device 22 of the hydraulic pipeline system. Therefore, in the embodiment of the present application, the corresponding relationship among the different rotating speed gears of the variable frequency pump 21, the different opening numbers of the bypass pipeline 24 and the pipeline pressure at the outlet of the pipe joint 26 connected with the driving device 22 of the hydraulic pipeline system is determined in advance.

[0056] Thereafter, in the corresponding relationship, the combination of the rotating speed gear of the variable frequency pump 21 and the opening number of the bypass pipeline 24 that can satisfy the condition that the pipeline pressure is greater than or equal to the minimum pressure requirement is determined.

[0057] Finally, step S3 is executed to traverse each combination. For each combination traversed, the hydraulic pipeline system is configured respectively, that is, the rotating speed gear of the variable frequency pump 21 in each combination is used to automatically adjust the rotating speed gear of the variable frequency pump 21 in the hydraulic pipeline system, and the opening number of the bypass pipeline 24 in each combination is used to adjust the opening number of the bypass pipeline 24 by automatically controlling the opening and closing of the opening and closing valve 25 connected with the bypass pipeline 24.

[0058] After the hydraulic pipeline system is configured, the normal stress intensity of the main pipeline 23 under each combination configuration can be measured by the normal stress sensor 27. Then, by comparing the normal stress intensity of the main pipeline 23 under each combination configuration, the combination with the minimum normal stress intensity of the main pipeline 23 is selected as the target combination, and the hydraulic pipeline system is configured by using the target combination, that is, the rotating speed gear of the variable frequency pump 21 in the hydraulic pipeline system is adjusted to the rotating speed gear of the variable frequency pump 21 in the target combination, and the opening number of the bypass pipeline 24 in the hydraulic pipeline system is adjusted to the opening number of the bypass pipeline 24 in the target combination.

[0059] The hydraulic pipeline fatigue alleviating method provided in the embodiments of the present application first acquires the minimum pressure requirement of the hydraulic pipeline system, the main pipeline of the hydraulic pipeline system is connected with multiple branch pipelines at the end far from the variable frequency pump; then based on the corresponding relationship between the different rotating speed gears of the variable frequency pump, the different opening numbers of the branch pipelines and the pipeline pressure at the outlet of the pipe joint connected with the driving device of the hydraulic pipeline system, the combination of the rotating speed gear of the variable frequency pump and the opening number of the branch pipeline satisfying the condition that the pipeline pressure is greater than or equal to the minimum pressure requirement is determined; finally, each combination is traversed, the hydraulic pipeline system is configured, the normal stress intensity of the main pipeline under each combination configuration is acquired, and the target combination with the minimum normal stress intensity of the main pipeline is selected to configure the hydraulic pipeline system. The method introduces the predetermined corresponding relationship, filters out the combination satisfying the minimum pressure requirement, and can quickly meet the pressure regulation requirement of the hydraulic pipeline system. By acquiring the normal stress intensity of the main pipeline under each combination configuration, and selecting the target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system, the main pipeline can have the minimum normal stress intensity, and the fatigue rupture problem of the main pipeline caused by the excessive normal stress can be effectively alleviated.

[0060] On the basis of the above-mentioned embodiments, the hydraulic pipeline fatigue alleviating method provided in the embodiments of the present application, after the target combination with the minimum normal stress intensity of the main pipeline is selected to configure the hydraulic pipeline system, comprises the following steps:

[0061] Acquiring the current pipeline pressure at the outlet of the pipe joint under the target combination configuration;

[0062] If the current pipeline pressure is less than the minimum pressure requirement, a combination in the combinations making the normal stress intensity of the main pipeline greater than and close to the normal stress intensity corresponding to the target combination is selected, and the target combination is updated to configure the hydraulic pipeline system;

[0063] The current pipeline pressure is continuously acquired, and the process of updating the target combination to configure the hydraulic pipeline system is iteratively performed until the current pipeline pressure is greater than or equal to the minimum pressure requirement.

[0064] Specifically, in the embodiments of the present application, considering the influence of the complex environmental factors existing in the actual working process of the hydraulic pipeline system, for example, the influence of the complex marine environment and other special factors on the hydraulic pipeline system in the ship hydraulic system during the ship navigation process, the configuration of the hydraulic pipeline system according to the preset relationship may occasionally have a certain deviation from the actual situation. Therefore, it is necessary to judge whether the pipeline pressure at the outlet of the pipe joint satisfies the minimum pressure requirement in real time.

[0065] Therefore, the current pipeline pressure at the outlet of the pipe joint under the target combination configuration needs to be obtained, which can be collected by a pressure sensor arranged in the pipeline between the pipe joint and each branch pipeline.

[0066] After that, if the current pipeline pressure is less than the minimum pressure requirement, a combination in which the normal stress intensity of the main pipeline is the second smallest among all combinations is selected, and the target combination is updated to configure the hydraulic pipeline system. After that, the current pipeline pressure continues to be obtained, and it is determined whether the current pipeline pressure is less than the minimum pressure requirement. If the current pipeline pressure is less than the minimum pressure requirement, a combination in which the normal stress intensity of the main pipeline is the third smallest among all combinations is selected, and the target combination is updated to configure the hydraulic pipeline system. The process of updating the target combination to configure the hydraulic pipeline system is iterated until the current pipeline pressure is greater than or equal to the minimum pressure requirement, and the updating of the target combination is stopped, so that the hydraulic pipeline system is maintained in the current configuration.

[0067] In the embodiments of the present application, by updating the target combination to configure the hydraulic pipeline system in real time when the current pipeline pressure is less than the minimum pressure requirement, it can be ensured that the pressure regulation requirement of the hydraulic pipeline system is met in real time, thereby meeting the operation requirement of the target object such as a ship or an aircraft.

[0068] On the basis of the above-mentioned embodiments, the hydraulic pipeline fatigue alleviating method provided in the embodiments of the present application comprises:

[0069] The minimum pressure requirement is received, which is input by a user after a working condition corresponding to the hydraulic pipeline system is changed.

[0070] Specifically, the minimum pressure requirement used in the embodiments of the present application can be determined and input by a user after a working condition corresponding to the hydraulic pipeline system is changed. The working condition corresponding to the hydraulic pipeline system is the operation working condition of the target object. In this way, it can be ensured that the minimum pressure requirement matches the actual working condition corresponding to the hydraulic pipeline system, and the safe operation of the hydraulic pipeline system and the target object can be ensured.

[0071] Here, the user can be an operator of the target object, such as a ship operator or an aircraft operator. Taking the target object as a ship as an example, when the ship working condition is changed, the ship operator can upload the minimum pressure requirement of the hydraulic pipeline system under the current working condition to the hydraulic pipeline fatigue alleviating device through an operation platform.

[0072] On the basis of the above-mentioned embodiments, the hydraulic pipeline fatigue alleviating method provided in the embodiments of the present application, the corresponding relationship is determined based on the following steps:

[0073] For a sample hydraulic pipeline system with the same dimensions as the hydraulic pipeline system, for different speed gears of the sample variable frequency pump in the sample hydraulic pipeline system, and for different opening numbers of the sample branch pipes connected to the end of the sample main pipeline of the sample hydraulic pipeline system away from the sample variable frequency pump, the sample pipeline pressure at the outlet of the sample pipe joint connected to the sample drive device of the sample hydraulic pipeline system is measured respectively, and the corresponding relationship is determined.

[0074] Specifically, in this embodiment of the invention, when determining the correspondence, a sample hydraulic pipeline system is introduced. This sample hydraulic pipeline system can be a hydraulic pipeline system of the same scale as the hydraulic pipeline system actually used for control, built in a laboratory.

[0075] For different speed settings V of the variable frequency pump in the sample hydraulic pipeline system i The sample pipeline pressure P at the outlet of the sample pipe joint connected to the sample drive device of the sample hydraulic pipeline system is measured by varying the number of openings j of the sample main pipeline and the sample branch pipeline connected to the sample variable frequency pump. ij And utilize the different speed ranges V of the sample variable frequency pump i The different number of sample branch pipes opened (j) and the sample pipeline pressure (P) ij The corresponding relationship is determined, and this relationship can be characterized by the structure of the hydraulic pipeline control database, as shown in Table 1.

[0076] The hydraulic pipeline control database is an m×n matrix, where 1≤i≤m, 1≤j≤n, m represents the number of speed gears of the sample variable frequency pump, and n represents the total number of sample side branch pipes.

[0077] In this embodiment of the invention, by establishing a hydraulic pipeline system of the same scale as the hydraulic pipeline system used in actual control within a laboratory, the corresponding relationship can be determined, which can reduce the cost of determining the corresponding relationship. Moreover, it only needs to be established in advance and can be directly used in the hydraulic pipeline fatigue relief method, thereby improving the efficiency of hydraulic pipeline fatigue relief.

[0078] Table 1. Structure of the Hydraulic Pipeline Control Database

[0079]

[0080] like Figure 3 As shown, based on the above embodiments, the hydraulic pipeline fatigue relief device provided in this embodiment of the invention includes:

[0081] Minimum pressure requirement acquisition module 31 is used to acquire the minimum pressure requirement of the hydraulic pipeline system, wherein the main pipeline of the hydraulic pipeline system is connected to multiple branch pipelines at the end away from the variable frequency pump.

[0082] The combination determining module 32 is configured to determine a combination of a rotating speed gear of the variable frequency pump and an opening number of the bypass pipe, based on a corresponding relationship among different rotating speed gears of the variable frequency pump, different opening numbers of the bypass pipe, and a pipe pressure at an outlet of a pipe joint connected with a driving device of the hydraulic pipe system.

[0083] The fatigue relieving module 33 is configured to traverse the combinations, configure the hydraulic pipe system, and determine a normal stress intensity of the main pipe under each combination configuration, and select a target combination with the minimum normal stress intensity of the main pipe to configure the hydraulic pipe system.

[0084] On the basis of the above-mentioned embodiments, the hydraulic pipe fatigue relieving device provided in the embodiments of the present application further comprises an optimization module configured to:

[0085] acquire a current pipe pressure at the outlet of the pipe joint under the target combination configuration;

[0086] if the current pipe pressure is less than the minimum pressure requirement, select a combination in the combinations, which makes the normal stress intensity of the main pipe greater than and close to the normal stress intensity corresponding to the target combination, and update the target combination to configure the hydraulic pipe system;

[0087] continue to acquire the current pipe pressure, and iteratively update the target combination to configure the hydraulic pipe system until the current pipe pressure is greater than or equal to the minimum pressure requirement.

[0088] On the basis of the above-mentioned embodiments, the hydraulic pipe fatigue relieving device provided in the embodiments of the present application, the minimum pressure requirement acquiring module is specifically configured to:

[0089] receive the minimum pressure requirement input by a user after a working condition corresponding to the hydraulic pipe system is changed.

[0090] On the basis of the above-mentioned embodiments, the hydraulic pipe fatigue relieving device provided in the embodiments of the present application further comprises a corresponding relationship determining module configured to:

[0091] for a sample hydraulic pipe system with the same dimensions as the hydraulic pipe system, for different rotating speed gears of a sample variable frequency pump in the sample hydraulic pipe system, and for different opening numbers of a sample bypass pipe connected with one end of a sample main pipe of the sample hydraulic pipe system away from the sample variable frequency pump, respectively measure a sample pipe pressure at an outlet of a sample pipe joint connected with a sample driving device of the sample hydraulic pipe system, and determine the corresponding relationship.

[0092] Specifically, the role of each module in the hydraulic pipeline fatigue alleviating device provided in the embodiments of the present application is one-to-one corresponding to the operation process of each step in the method as described above, and the effects achieved are consistent. For details, refer to the above embodiments, which will not be repeated here.

[0093] As shown in Figure 4 the above embodiments, the hydraulic pipeline system provided in the embodiments of the present application comprises a server 41, a main pipeline 23, a variable frequency pump 21, a driving device 22, a pipe joint 26, a normal stress sensor 27, a plurality of branch pipelines 24, and an on-off valve 25 connected to each branch pipeline 24, the server 41 is connected to the normal stress sensor 27, the variable frequency pump 21, and the on-off valve 25 respectively;

[0094] One end of the main pipeline 23 is connected to the variable frequency pump 21, and the other end of the main pipeline 23 is connected to one end of each branch pipeline 24;

[0095] The driving device 22 is connected to the variable frequency pump 21 and one end of the pipe joint 26 respectively, and the other end of the pipe joint 26 is connected to the other end of each branch pipeline 24;

[0096] The normal stress sensor 27 is arranged in the main pipeline 23, for collecting the normal stress intensity of the main pipeline 23 and transmitting the normal stress intensity to the server 41;

[0097] The server 41 is used to execute the hydraulic pipeline fatigue alleviating method provided in the above embodiments.

[0098] Specifically, in the embodiments of the present application, the server 41 can be deployed in the cabin where the hydraulic system is located. The hydraulic pipeline control database can be stored in the server 41, that is, the corresponding relationship between the different speed gears of the variable frequency pump 21, the different opening numbers of the branch pipelines 24, and the pipeline pressure at the outlet of the pipe joint 26 connected to the driving device 22 of the hydraulic pipeline system.

[0099] The normal stress sensor 27 can collect the normal stress intensity of the main pipeline 23 in real time, or only when needed, which is not limited here.

[0100] After determining the minimum pressure demand of the hydraulic pipeline system, the server 41 quickly searches the combination of the speed gear of the variable frequency pump and the opening number of the branch pipeline when the pipeline pressure is greater than or equal to the minimum pressure demand in the hydraulic pipeline control database.

[0101] Meanwhile, the hydraulic pipeline system is configured sequentially for the combination of the speed range of the variable frequency pump 21 and the number of opening branches 24 to meet the minimum pressure requirements. The normal stress intensity of the main pipeline under each combination configuration is recorded, and the combination with the lowest normal stress intensity is selected as the target combination for configuring the hydraulic pipeline system.

[0102] The hydraulic pipeline system provided in this embodiment of the invention, with the introduction of a server, multiple branch pipelines, and on / off valves connected to each branch pipeline, can not only quickly meet the pressure regulation requirements of the hydraulic pipeline system, but also ensure that the main pipeline has minimum normal stress strength, effectively alleviating the fatigue rupture problem caused by excessive normal stress in the main pipeline.

[0103] like Figure 5 As shown, based on the above embodiments, the hydraulic pipeline system provided in this embodiment of the invention further includes a pressure sensor 42, which is disposed in the pipeline between the pipe joint 26 and each branch pipe 24, and the pressure sensor 42 is connected to the server 41.

[0104] Pressure sensor 42 is used to collect the current pipeline pressure at the outlet of pipe connector 26 under the target combination configuration and transmit the current pipeline pressure to server 41;

[0105] Server 41 is also used to select, if the current pipeline pressure is less than the minimum pressure requirement, the combination that makes the normal stress intensity of the main pipeline 23 greater than and the normal stress intensity of the adjacent target combination, and update the target combination to configure the hydraulic pipeline system; continue to obtain the current pipeline pressure, iteratively update the target combination to configure the hydraulic pipeline system, until the current pipeline pressure is greater than or equal to the minimum pressure requirement.

[0106] Specifically, in order to avoid deviations between the configuration of the hydraulic pipeline system and the actual configuration due to the use of preset relationships, it is still necessary to further configure the hydraulic pipeline system based on the actual measured real-time pipeline pressure.

[0107] The pressure sensor 42 collects the current pipeline pressure at the outlet of the pipe connector 26 under the target combination configuration and transmits the current pipeline pressure to the server 41.

[0108] The server 41 compares the current pipeline pressure under the target combination configuration with the minimum pressure requirement, and when the current pipeline pressure is greater than or equal to the minimum pressure requirement, it indicates that the current target combination configuration meets the working condition requirement of the hydraulic pipeline system; when the current pipeline pressure is less than the minimum pressure requirement, it indicates that the current target combination configuration cannot meet the working condition requirement of the hydraulic pipeline system, and the combination with the second smallest normal stress intensity in the above combination is selected as the target combination to configure the hydraulic pipeline system, and the comparison between the current pipeline pressure under the target combination configuration and the minimum pressure requirement is continued until the current pipeline pressure is greater than or equal to the minimum pressure requirement, and then the target combination is stopped updating.

[0109] In the embodiment of the application, by combining the pressure sensor with the server, the target combination can be updated to configure the hydraulic pipeline system when the current pipeline pressure is less than the minimum pressure requirement, so that the pressure regulation requirement of the hydraulic pipeline system can be met in real time, and the running requirement of the target object such as a ship or an aircraft can be met.

[0110] On the basis of the above-mentioned embodiment, the hydraulic pipeline system provided in the embodiment of the application is configured with an input device, and the server is connected with the input device.

[0111] The input device is used to collect the minimum pressure requirement input by the user after the working condition corresponding to the hydraulic pipeline system is changed.

[0112] Specifically, in the embodiment of the application, the server can be configured with an input device, and the input device is connected with the server, so that the user can input the minimum pressure requirement to the server through the input device after the working condition corresponding to the hydraulic pipeline system is changed.

[0113] Here, the input device can include a mouse, a keyboard, a touch screen, etc., which are not limited here. The input device can be configured on an operation table.

[0114] In summary, the hydraulic pipeline fatigue relieving method, device and hydraulic pipeline system provided in the embodiment of the application can quickly adjust the hydraulic pipeline system to the appropriate speed range of the variable frequency pump and the number of opened side pipes, which can meet the minimum pressure requirement of the hydraulic pipeline system and realize the control of the normal stress intensity of the main pipeline of the hydraulic pipeline system, and effectively relieve the hydraulic pipeline fatigue rupture problem.

[0115] Figure 6 An example of a schematic diagram of the physical structure of an electronic device is shown in FIG. 1. Figure 6As shown, the electronic device can include a processor 610, a communications interface 620, a memory 630, and a communications bus 640, wherein the processor 610, the communications interface 620, and the memory 630 complete mutual communication through the communications bus 640. The processor 610 can invoke a logic instruction in the memory 630 to execute the hydraulic pipeline fatigue mitigation method provided in each of the above embodiments, which includes: obtaining a minimum pressure requirement of a hydraulic pipeline system, wherein a main pipeline of the hydraulic pipeline system is connected with a plurality of branch pipelines at an end away from a variable frequency pump; determining a combination of a speed gear of the variable frequency pump and an opening number of the branch pipelines when a pipeline pressure is greater than or equal to the minimum pressure requirement based on a corresponding relationship between the speed gear of the variable frequency pump, the opening number of the branch pipelines, and a pipeline pressure at an outlet of a pipe joint connected with a driving device of the hydraulic pipeline system; traversing each combination, configuring the hydraulic pipeline system, and obtaining a normal stress intensity of the main pipeline under each combination configuration; and selecting a target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

[0116] In addition, the logic instruction in the memory 630 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0117] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program being stored in a non-transitory computer readable storage medium, and the computer program being executable by a processor to enable a computer to perform the hydraulic pipeline fatigue alleviating method provided in any of the above embodiments, the method comprising: obtaining a minimum pressure requirement of a hydraulic pipeline system, a main pipeline of the hydraulic pipeline system being connected with a plurality of branch pipelines at an end away from a variable frequency pump; determining a combination of a speed gear of the variable frequency pump and an opening number of the branch pipelines, which satisfies a pipeline pressure being greater than or equal to the minimum pressure requirement, based on a corresponding relationship between different speed gears of the variable frequency pump, different opening numbers of the branch pipelines, and pipeline pressures at outlets of pipe joints connected with driving devices of the hydraulic pipeline system; traversing each combination, configuring the hydraulic pipeline system, obtaining a normal stress intensity of the main pipeline under each combination, and selecting a target combination with a minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

[0118] In another aspect, the present application also provides a non-transitory computer readable storage medium, which stores a computer program, the computer program being executable by a processor to perform the hydraulic pipeline fatigue alleviating method provided in any of the above embodiments, the method comprising: obtaining a minimum pressure requirement of a hydraulic pipeline system, a main pipeline of the hydraulic pipeline system being connected with a plurality of branch pipelines at an end away from a variable frequency pump; determining a combination of a speed gear of the variable frequency pump and an opening number of the branch pipelines, which satisfies a pipeline pressure being greater than or equal to the minimum pressure requirement, based on a corresponding relationship between different speed gears of the variable frequency pump, different opening numbers of the branch pipelines, and pipeline pressures at outlets of pipe joints connected with driving devices of the hydraulic pipeline system; traversing each combination, configuring the hydraulic pipeline system, obtaining a normal stress intensity of the main pipeline under each combination, and selecting a target combination with a minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

[0119] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the present embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0120] Those skilled in the art can clearly understand the technical solutions of the various embodiments from the above description of the embodiments, and the various embodiments can be implemented by means of software with the necessary general hardware platforms, and of course, can also be implemented by hardware. Based on such understanding, the above technical solutions, essentially or in other words, the part of the prior art that makes a contribution, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, and the like, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0121] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for alleviating fatigue in hydraulic pipelines, characterized in that, include: To obtain the minimum pressure requirement of the hydraulic pipeline system, the main pipeline of the hydraulic pipeline system is connected to multiple branch pipelines at the end away from the variable frequency pump. Based on the correspondence between the different speed settings of the variable frequency pump, the different number of openings of the side branch pipes, and the pipe pressure at the outlet of the pipe joint connected to the drive device of the hydraulic pipeline system, the combination of the speed setting of the variable frequency pump and the number of openings of the side branch pipes is determined when the pipe pressure is greater than or equal to the minimum pressure requirement. The hydraulic pipeline system is configured by iterating through each combination and obtaining the normal stress intensity of the main pipeline under each combination configuration. The target combination with the minimum normal stress intensity of the main pipeline is selected to configure the hydraulic pipeline system.

2. The method for alleviating fatigue in hydraulic pipelines according to claim 1, characterized in that, The process of selecting the target combination that minimizes the normal stress intensity of the main pipeline to configure the hydraulic pipeline system includes: Obtain the current pipeline pressure at the outlet of the pipe fitting under the target combination configuration; If the current pipeline pressure is less than the minimum pressure requirement, then select the combination among the combinations that makes the normal stress intensity of the main pipeline greater than and close to the normal stress intensity corresponding to the target combination, and update the target combination to configure the hydraulic pipeline system. Continue to acquire the current pipeline pressure and iteratively update the configuration of the hydraulic pipeline system using the target combination until the current pipeline pressure is greater than or equal to the minimum pressure requirement.

3. The method for alleviating fatigue in hydraulic pipelines according to claim 1, characterized in that, The acquisition of the minimum pressure requirement for the hydraulic pipeline system includes: Receive the minimum pressure requirement input by the user after the corresponding operating condition of the hydraulic pipeline system changes.

4. The method for alleviating fatigue in hydraulic pipelines according to claim 1, characterized in that, The correspondence is determined based on the following steps: For a sample hydraulic pipeline system with the same dimensions as the hydraulic pipeline system, for different speed gears of the sample variable frequency pump in the sample hydraulic pipeline system, and for different opening numbers of the sample branch pipes connected to the end of the sample main pipeline of the sample hydraulic pipeline system away from the sample variable frequency pump, the sample pipeline pressure at the outlet of the sample pipe joint connected to the sample drive device of the sample hydraulic pipeline system is measured respectively, and the corresponding relationship is determined.

5. A fatigue relief device for hydraulic pipelines, characterized in that, include: The minimum pressure requirement acquisition module is used to acquire the minimum pressure requirement of the hydraulic pipeline system, wherein the main pipeline of the hydraulic pipeline system is connected to multiple branch pipelines at the end away from the variable frequency pump. The combination determination module is used to determine the combination of the variable frequency pump speed setting and the number of branch pipe openings when the pipeline pressure is greater than or equal to the minimum pressure requirement, based on the correspondence between the different speed settings of the variable frequency pump, the different number of branch pipe openings, and the pipeline pressure at the outlet of the pipe joint connected to the drive device of the hydraulic pipeline system. The fatigue mitigation module is used to traverse each combination, configure the hydraulic pipeline system, determine the normal stress intensity of the main pipeline under each combination configuration, and select the target combination with the minimum normal stress intensity of the main pipeline to configure the hydraulic pipeline system.

6. A hydraulic pipeline system, characterized in that, include: The system includes a server, a main pipeline, a variable frequency pump, a drive device, a pipe joint, a normal stress sensor, multiple branch pipelines, and an on / off valve connected to each branch pipeline. The server is connected to the normal stress sensor, the variable frequency pump, and the on / off valve, respectively. One end of the main pipeline is connected to the variable frequency pump, and the other end of the main pipeline is connected to one end of each branch pipeline; The drive device is connected to the variable frequency pump and one end of the pipe joint, and the other end of the pipe joint is connected to the other end of each branch pipe. The normal stress sensor is installed inside the main pipeline to collect the normal stress intensity of the main pipeline and transmit the normal stress intensity to the server; The server is used to execute the hydraulic pipeline fatigue mitigation method as described in any one of claims 1-4.

7. The hydraulic pipeline system according to claim 6, characterized in that, Also includes: A pressure sensor is installed in the pipeline between the pipe joint and each branch pipe, and the pressure sensor is connected to the server. The pressure sensor is used to collect the current pipeline pressure at the outlet of the pipe joint under the target combination configuration, and transmit the current pipeline pressure to the server; The server is further configured to, if the current pipeline pressure is less than the minimum pressure requirement, select the combination among the combinations that makes the normal stress intensity of the main pipeline greater than and close to the normal stress intensity corresponding to the target combination, update the target combination to configure the hydraulic pipeline system; continue to obtain the current pipeline pressure, iteratively update the target combination to configure the hydraulic pipeline system, until the current pipeline pressure is greater than or equal to the minimum pressure requirement.

8. The hydraulic pipeline system according to claim 6, characterized in that, The server is configured with an input device, and the server is connected to the input device. The input device is used to collect the minimum pressure requirement input by the user after the corresponding operating conditions of the hydraulic pipeline system change.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the hydraulic pipeline fatigue relief method as described in any one of claims 1-4.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the hydraulic pipeline fatigue relief method as described in any one of claims 1-4.

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