Hydraulic control system and hydraulic oil temperature control method based on internal high-pressure forming

Abstract

The application discloses a hydraulic control system and a hydraulic oil temperature control method based on internal high-pressure forming. The temperature acquisition module is arranged to collect the temperature value of the oil in the hydraulic oil tank. The main control module drives the temperature increasing module and the temperature decreasing module to adjust the temperature of the oil in the hydraulic oil tank according to the collected temperature value of the oil in the hydraulic oil tank. When the temperature is higher than a predetermined temperature, the temperature decreasing module is started, and the circulating module is started at the same time. The high-temperature oil in the hydraulic oil tank is taken out of the hydraulic oil tank and is cooled by the temperature decreasing module. The cooled oil returns to the hydraulic oil tank. When the temperature is lower than the predetermined temperature, the temperature increasing module is started. The several groups of electric heating pipes of the temperature increasing module heat the low-temperature oil in the hydraulic oil tank, so that the low-temperature oil is heated to the predetermined temperature. The temperature of the oil in the hydraulic oil tank is adjusted by the temperature increasing module and the temperature decreasing module, so that the stable operation of the hydraulic system is ensured.

Description

Technical Field

[0001] This invention relates to the field of temperature regulation technology, specifically to a hydraulic control system and hydraulic oil temperature control method based on internal high-pressure molding. Background Technology

[0002] Hydraulic oil, as the working medium in a hydraulic system, transfers energy, lubricates actuators, and removes heat generated by them. When the hydraulic oil temperature is too high, the temperature of the entire hydraulic system's oil circuit rises, leading to problems such as decreased oil viscosity, damage to the oil film at lubrication points, increased oil leakage, accelerated aging of sealing materials, and reduced clearance between moving parts with different expansion coefficients in hydraulic components, causing jamming. These issues affect the performance and reliability of the hydraulic system. Conversely, when the hydraulic oil temperature is too low, the viscosity increases, reducing the self-priming capability of the hydraulic pump, increasing pressure loss in the hydraulic system, and thus affecting its operation. It can also cause water in the hydraulic oil to condense, which can adhere to system components, leading to filter blockage and valve seizure.

[0003] Therefore, it is especially important to keep the hydraulic oil temperature within a reasonable operating range in order to ensure the smooth operation of the hydraulic system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a hydraulic control system and hydraulic oil temperature control method based on internal high-pressure molding, thereby solving at least one of the problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hydraulic control system based on internal high-pressure molding includes: a temperature acquisition module, which is used to acquire the temperature value of the oil in the hydraulic tank;

[0007] A heating module, used to heat the oil in the hydraulic oil tank;

[0008] A cooling module, used to cool the oil in the hydraulic tank;

[0009] The main control module is connected to the temperature acquisition module, the heating module, and the cooling module. It is used to determine the current temperature requirement of the oil in the hydraulic tank based on the temperature value of the oil in the hydraulic tank, and to control the start and stop of the heating module and the cooling module.

[0010] Preferably, it also includes a circulation module, which is connected to the hydraulic oil tank and is used to circulate the oil in the hydraulic oil tank, and the cooling module is located outside the circulation module.

[0011] Preferably, the circulation module includes a circulation pump, the inlet and outlet of which are connected to a hydraulic oil tank via pipelines, and the pipeline connecting the inlet of the circulation pump and the hydraulic oil tank is a parallel bend pipeline.

[0012] Preferably, the temperature acquisition module includes several sets of temperature sensors disposed in the hydraulic oil tank, and the temperature sensors are evenly distributed in the hydraulic oil tank;

[0013] The heating module includes several sets of electric heating tubes installed inside the hydraulic oil tank, and the electric heating tubes are immersed in the hydraulic oil tank;

[0014] The cooling module includes a cooling fan and cooling fins. The cooling fan is mounted on the cooling fins, and the cooling fins are connected to the pipeline connecting the inlet of the circulating pump and the hydraulic oil tank.

[0015] Preferably, the hydraulic oil tank is equipped with a stirring paddle.

[0016] A hydraulic oil temperature control method based on internal high-pressure molding, using the aforementioned hydraulic control system based on internal high-pressure molding.

[0017] Preferably, it includes the following steps:

[0018] S0: Obtain the hydraulic influence parameters and preset relative temperature range corresponding to the equipment served by the hydraulic control system. The hydraulic influence parameters include oil viscosity parameters, oil density parameters, and oil usage time parameters.

[0019] S1: Obtain the first thermal index, which is the average temperature detected by several temperature sensors evenly distributed inside the hydraulic oil tank.

[0020] S2: Obtain the preset second thermal index, which is the optimal temperature value corresponding to the equipment served by the hydraulic control system;

[0021] S3: Determine the target temperature range based on the first thermal sensitivity index and the second thermal sensitivity index;

[0022] S4: Determine the start / stop of the heating module, cooling module, and circulation module based on the difference between the target temperature range and the relative temperature range;

[0023] S5: Obtain temperature influence parameters, and determine the operating parameters of the heating module and the cooling module based on the temperature influence parameters. The temperature influence parameters include the heating power parameters of the heating module, the cooling power parameters of the cooling module, and the circulation power parameters of the circulation module.

[0024] Preferably, in step S3, the following steps are included:

[0025] S31: Determine a first temperature curve based on at least one of the oil viscosity parameter, oil density parameter, and oil usage time parameter, as well as the first thermal sensitivity index and the relative temperature range;

[0026] S32: Determine a second temperature curve based on at least one of the oil viscosity parameter, oil density parameter, and oil usage time parameter, as well as the second thermal sensitivity index and the relative temperature range;

[0027] S33: Determine the target temperature range based on the first temperature curve and the second temperature curve.

[0028] Preferably, in step S5, the following steps are included:

[0029] S51: Determine the control curve based on the heating power parameters of the heating module, the cooling power parameters of the cooling module, the circulation power parameters of the circulation module, the target temperature range, and the relative temperature range;

[0030] S52: The operating parameters of the heating module and the cooling module are determined according to the control curve, the first thermal sensitivity index and the second thermal sensitivity index, and the main control module controls the heating module and the cooling module to operate according to the determined operating parameters.

[0031] Preferably, the start and stop of the circulation module are associated with the start and stop of the cooling module.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] The temperature acquisition module collects the temperature value of the hydraulic oil in the tank. The main control module drives the heating module and cooling module to adjust the temperature of the hydraulic oil in the tank based on the collected temperature value. When the temperature is higher than the preset temperature, the cooling module is activated, and the circulation module is activated at the same time to remove the high temperature oil from the hydraulic oil tank and cool it down through the cooling module. The cooled oil is then returned to the hydraulic oil tank. When the temperature is lower than the preset temperature, the heating module is activated. Several sets of electric heating tubes in the heating module heat the low temperature oil in the hydraulic oil tank until it reaches the preset temperature.

[0034] The temperature of the hydraulic oil in the hydraulic tank is regulated by heating and cooling modules to ensure the stable operation of the hydraulic system.

[0035] The hydraulic oil tank is equipped with an agitator to make the oil temperature more uniform and reduce adjustment errors.

[0036] Traditional temperature control operates independently, referencing only the oil temperature. This can lead to the inability to achieve the optimal temperature due to differences in the oil and the operating environment. This invention, however, refers to hydraulic influence parameters when adjusting the temperature, making the final adjusted temperature related to the state of the oil at that time, thus solving the problem that traditional temperature control cannot achieve the optimal temperature.

[0037] The control of oil temperature is based on the current oil temperature in the hydraulic tank and the optimal temperature value corresponding to the equipment served by the hydraulic control system. The target temperature range is determined according to the difference between the two, thereby determining the start and stop of the heating module and the cooling module. When the target temperature range is negative, the heating module is started; when the target temperature range is positive, the cooling module is started.

[0038] Based on hydraulic influence parameters, heating power parameters, cooling power parameters of the cooling module, circulation power parameters of the circulation module, target temperature range, and relative temperature range, a control curve is obtained. The operating parameters of the heating and cooling modules are determined according to the control curve. The adjustment of the operating parameters of the heating and cooling modules refers to the above parameters, so that the oil adjustment is more suitable for the equipment served by the current hydraulic control system, which is conducive to reducing energy consumption and also conducive to the stable operation of the hydraulic system. Attached Figure Description

[0039] Figure 1 This is a flowchart of the control method of the present invention;

[0040] Figure 2 This is a detailed flowchart of step S3 of the control method of the present invention;

[0041] Figure 3 The flowchart below provides a detailed explanation of step S5 of the control method of the present invention. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Example 1

[0044] This invention provides a technical solution: a hydraulic control system based on internal high-pressure molding, comprising: a temperature acquisition module, wherein the temperature acquisition module is used to acquire the temperature value of the oil in the hydraulic tank;

[0045] A heating module, used to heat the oil in the hydraulic oil tank;

[0046] A cooling module, used to cool the oil in the hydraulic tank;

[0047] The main control module is connected to the temperature acquisition module, the heating module, and the cooling module. It is used to determine the current temperature requirement of the oil in the hydraulic tank based on the temperature value of the oil in the hydraulic tank, and to control the start and stop of the heating module and the cooling module.

[0048] Preferably, it also includes a circulation module, which is connected to the hydraulic oil tank and is used to circulate the oil in the hydraulic oil tank, and the cooling module is located outside the circulation module.

[0049] Preferably, the circulation module includes a circulation pump, the inlet and outlet of which are connected to a hydraulic oil tank via pipelines, and the pipeline connecting the inlet of the circulation pump and the hydraulic oil tank is a parallel bend pipeline.

[0050] Preferably, the temperature acquisition module includes several sets of temperature sensors disposed in the hydraulic oil tank, and the temperature sensors are evenly distributed in the hydraulic oil tank;

[0051] The heating module includes several sets of electric heating tubes installed inside the hydraulic oil tank, and the electric heating tubes are immersed in the hydraulic oil tank;

[0052] The cooling module includes a cooling fan and cooling fins. The cooling fan is mounted on the cooling fins, and the cooling fins are connected to the pipeline connecting the inlet of the circulating pump and the hydraulic oil tank.

[0053] Preferably, the hydraulic oil tank is equipped with a stirring paddle.

[0054] The working principle and beneficial effects of the above scheme are as follows:

[0055] The temperature acquisition module collects the temperature value of the hydraulic oil in the tank. The main control module drives the heating module and cooling module to adjust the temperature of the hydraulic oil in the tank based on the collected temperature value. When the temperature is higher than the preset temperature, the cooling module is activated, and the circulation module is activated at the same time to remove the high temperature oil from the hydraulic oil tank and cool it down through the cooling module. The cooled oil is then returned to the hydraulic oil tank. When the temperature is lower than the preset temperature, the heating module is activated. Several sets of electric heating tubes in the heating module heat the low temperature oil in the hydraulic oil tank until it reaches the preset temperature.

[0056] The temperature of the hydraulic oil in the hydraulic tank is regulated by heating and cooling modules to ensure the stable operation of the hydraulic system.

[0057] The hydraulic oil tank is equipped with an agitator to make the oil temperature more uniform and reduce adjustment errors.

[0058] Example 2

[0059] Please refer to 1-3, a hydraulic oil temperature control method based on internal high-pressure molding, using the aforementioned hydraulic control system based on internal high-pressure molding.

[0060] Preferably, it includes the following steps:

[0061] S0: Obtain the hydraulic influence parameters and preset relative temperature range corresponding to the equipment served by the hydraulic control system. The hydraulic influence parameters include oil viscosity parameters, oil density parameters, and oil usage time parameters.

[0062] S1: Obtain the first thermal index, which is the average temperature detected by several temperature sensors evenly distributed inside the hydraulic oil tank.

[0063] S2: Obtain the preset second thermal index, which is the optimal temperature value corresponding to the equipment served by the hydraulic control system;

[0064] S3: Determine the target temperature range based on the first thermal sensitivity index and the second thermal sensitivity index;

[0065] S4: Determine the start / stop of the heating module, cooling module, and circulation module based on the difference between the target temperature range and the relative temperature range;

[0066] S5: Obtain temperature influence parameters, and determine the operating parameters of the heating module and the cooling module based on the temperature influence parameters. The temperature influence parameters include the heating power parameters of the heating module, the cooling power parameters of the cooling module, and the circulation power parameters of the circulation module.

[0067] Preferably, in step S3, the following steps are included:

[0068] S31: Determine a first temperature curve based on at least one of the oil viscosity parameter, oil density parameter, and oil usage time parameter, as well as the first thermal sensitivity index and the relative temperature range;

[0069] S32: Determine a second temperature curve based on at least one of the oil viscosity parameter, oil density parameter, and oil usage time parameter, as well as the second thermal sensitivity index and the relative temperature range;

[0070] S33: Determine the target temperature range based on the first temperature curve and the second temperature curve.

[0071] Preferably, in step S5, the following steps are included:

[0072] S51: Determine the control curve based on the heating power parameters of the heating module, the cooling power parameters of the cooling module, the circulation power parameters of the circulation module, the target temperature range, and the relative temperature range;

[0073] S52: The operating parameters of the heating module and the cooling module are determined according to the control curve, the first thermal sensitivity index and the second thermal sensitivity index, and the main control module controls the heating module and the cooling module to operate according to the determined operating parameters.

[0074] Preferably, the start and stop of the circulation module are associated with the start and stop of the cooling module.

[0075] The working principle and beneficial effects of the above scheme are as follows:

[0076] Traditional temperature control operates independently, referencing only the oil temperature. This can lead to the inability to achieve the optimal temperature due to differences in the oil and the operating environment. This invention, however, refers to hydraulic influence parameters (oil viscosity, oil density, and oil usage time) when adjusting the temperature, making the final adjusted temperature related to the state of the oil at that time. This solves the problem that traditional temperature control cannot achieve the optimal temperature.

[0077] The control of oil temperature is based on the current oil temperature in the hydraulic tank and the optimal temperature value corresponding to the equipment served by the hydraulic control system. The target temperature range is determined according to the difference between the two, thereby determining the start and stop of the heating module and the cooling module. When the target temperature range is negative, the heating module is started; when the target temperature range is positive, the cooling module is started.

[0078] Based on hydraulic influence parameters, heating power parameters, cooling power parameters of the cooling module, circulation power parameters of the circulation module, target temperature range, and relative temperature range, a control curve is obtained. The operating parameters (such as running time) of the heating and cooling modules are determined according to the control curve. The adjustment of the operating parameters of the heating and cooling modules refers to the above parameters, so that the oil adjustment is more suitable for the equipment served by the current hydraulic control system, which is conducive to reducing energy consumption and also conducive to the stable operation of the hydraulic system.

[0079] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic oil temperature control method based on internal high-pressure forming, characterized in that: A hydraulic control system based on internal high-pressure molding is used, which includes a temperature acquisition module for acquiring the temperature value of the oil in the hydraulic tank. The heating module is used to heat the oil in the hydraulic oil tank. The cooling module is used to cool the oil in the hydraulic oil tank. The main control module is connected to the temperature acquisition module, the heating module, and the cooling module. It is used to determine the current temperature requirement of the oil in the hydraulic tank based on the temperature value of the oil in the hydraulic tank, and to control the start and stop of the heating module and the cooling module. The method includes the following steps: S0: Obtain the hydraulic influence parameters and preset relative temperature range corresponding to the equipment served by the hydraulic control system. The hydraulic influence parameters include oil viscosity parameters, oil density parameters, and oil usage time parameters. S1: Obtain the first thermal index, which is the average temperature detected by several temperature sensors evenly distributed inside the hydraulic oil tank. S2: Obtain the preset second thermal index, which is the optimal temperature value corresponding to the equipment served by the hydraulic control system; S3: Determine the target temperature range based on the first thermal sensitivity index and the second thermal sensitivity index; S4: Determine the start and stop of the heating module, cooling module, and circulation module based on the difference between the target temperature range and the relative temperature range; S5: Obtain temperature influence parameters, and determine the operating parameters of the heating module and cooling module based on the temperature influence parameters. The temperature influence parameters include the heating power parameters of the heating module, the cooling power parameters of the cooling module, and the circulation power parameters of the circulation module.

2. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 1, characterized in that: The hydraulic control system also includes a circulation module, which is connected to the hydraulic oil tank to circulate the oil in the tank, and a cooling module is located outside the circulation module.

3. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 2, characterized in that: The circulation module includes a circulation pump. The inlet and outlet of the circulation pump are connected to the hydraulic oil tank through pipelines. The pipeline connecting the inlet of the circulation pump and the hydraulic oil tank is a parallel, bend-shaped pipeline.

4. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 3, characterized in that: The temperature acquisition module includes several sets of temperature sensors installed inside the hydraulic oil tank, with the temperature sensors evenly distributed inside the hydraulic oil tank. The heating module includes several sets of electric heating tubes installed in the hydraulic oil tank, with the electric heating tubes immersed in the hydraulic oil tank; The cooling module includes a cooling fan and cooling fins. The cooling fan is mounted on the cooling fins, and the cooling fins are connected to the pipeline connecting the inlet of the circulating pump and the hydraulic oil tank.

5. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 3, characterized in that: The hydraulic oil tank is equipped with a stirring paddle.

6. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 1, characterized in that: In step S3, including S31: Determine the first temperature curve based on at least one of the following parameters: oil viscosity parameter, oil density parameter, oil usage time parameter, first thermal index, and relative temperature range; S32: Determine the second temperature curve based on at least one of the following parameters: oil viscosity parameter, oil density parameter, oil usage time parameter, second thermal index, and relative temperature range; S33: Determine the target temperature range based on the first temperature curve and the second temperature curve.

7. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 1, characterized in that: In step S5, including S51: Determine the control curve based on the heating power parameters of the heating module, the cooling power parameters of the cooling module, the circulation power parameters of the circulation module, the target temperature range, and the relative temperature range. S52: The operating parameters of the heating module and the cooling module are determined based on the control curve, the first thermal sensitivity index, and the second thermal sensitivity index. The main control module controls the heating module and the cooling module to operate according to the determined operating parameters.

8. The hydraulic oil temperature control method based on internal high-pressure forming according to claim 1, characterized in that: The start and stop of the circulation module are related to the start and stop of the cooling module.

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