Oil film bearing lubrication system oil temperature control method and device

Abstract

The application belongs to the technical field of industrial automation control and relates to an oil film bearing lubrication system oil temperature control method and device, the method comprising: obtaining the temperature value of an oil tank and the operating state of a unit, the operating state comprising a maintenance state or a non-maintenance state; if the operating state is the maintenance state, increasing the upper limit value of the original temperature range to a preset upper limit temperature value as a new temperature range, and heating the oil tank according to the new temperature range; if the operating state is the non-maintenance state, heating the oil tank according to the original temperature range. When the oil film system is restarted after a long shutdown, the lubricating oil in the external oil circuit has flowed back into the oil tank for cooling, and the oil temperature is reduced by the external oil circuit cooling. The application increases the upper limit temperature value of the original temperature range, thereby ensuring that the oil temperature of the oil film bearing used to establish the oil film can be maintained in the optimal temperature range, thereby avoiding the beneficial effect of damage to the oil film bearing caused by abnormal oil temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial automation control, in particular to an oil film bearing lubrication system oil temperature control method and device. BACKGROUND

[0002] The bearings used in industrial applications are generally divided into rolling bearings and sliding bearings. For example, the common deep groove ball bearing is a rolling bearing, and the oil film bearing is a sliding bearing which carries the bearing load and provides lubrication through the oil film established between the shaft neck and the bearing bush. It has the characteristics of long service life, high precision and large carrying capacity. The oil film bearing is widely used in the support roller of a rolling mill. The oil film bearing lubricating oil is particularly sensitive to temperature control. When the oil temperature is too low, the viscosity of the lubricating oil is low, and an effective oil film cannot be formed, resulting in direct contact between the shaft neck and the bearing bush, and the boundary lubricating oil is in a semi-dry state, which is easy to rub with the bearing bush, thereby damaging the bearing bush contact surface and even causing bearing bush damage and burning problem. Therefore, the temperature control of the oil film bearing lubricating oil is particularly important, especially when the bearing starts to rotate from a stationary state. At this time, the oil film bearing is in a boundary lubrication state, and too low oil temperature will cause bearing boundary friction, thereby forming permanent damage. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, one of the purposes of the present application is to provide an oil film bearing lubrication system oil temperature control method for solving the problem that the oil temperature is too low to easily cause boundary friction of the oil film bearing, thereby forming permanent damage, when the oil film bearing starts to rotate from a stationary state. The second purpose is to provide an oil film bearing lubrication system oil temperature control device.

[0004] To achieve the above-mentioned purposes and other related purposes, the present application provides an oil film bearing lubrication system oil temperature control method, comprising:

[0005] Obtaining the temperature value of the oil tank and the operating state of the unit, the operating state including the maintenance state or the non-maintenance state;

[0006] If the operating state is the maintenance state, the upper limit value of the original temperature range is increased to a preset upper limit temperature value as a new temperature range, and the oil tank is heated according to the new temperature range;

[0007] If the operating state is the non-maintenance state, the oil tank is heated according to the original temperature range.

[0008] Optionally, the temperature information of the oil tank and the operating state of the unit are obtained, the operating state including the maintenance state or the non-maintenance state, and further comprising:

[0009] Monitoring an operation parameter of a machine set;

[0010] Comparing the operation parameter with a preset operation parameter to obtain a comparison result;

[0011] According to the comparison result, determining a switching signal of the operation state.

[0012] Optionally, according to the comparison result, determining a switching signal of the operation state, further comprises:

[0013] If the operation parameter is consistent with the preset operation parameter, then according to the switching signal, controlling the machine set to switch to a non-maintenance state;

[0014] If the operation parameter is inconsistent with the preset operation parameter, then according to the switching signal, controlling the machine set to switch to a non-maintenance state.

[0015] Optionally, if the operation parameter is consistent with the preset operation parameter, then according to the switching signal, controlling the machine set to switch to a non-maintenance state, further comprises:

[0016] Comparing the temperature value with the original temperature range to obtain a first comparison result;

[0017] According to the first comparison result, determining a working state of an oil tank heater.

[0018] Optionally, according to the first comparison result, determining a working state of an oil tank heater, further comprises:

[0019] If the first comparison result is less than a lower limit value of the original temperature range, then the oil tank heater is in an open state;

[0020] If the first comparison result is greater than an upper limit value of the original temperature range, then the oil tank heater is in a shutdown state.

[0021] Optionally, if the operation parameter is inconsistent with the preset operation parameter, then according to the switching signal, controlling the machine set to switch to a non-maintenance state, further comprises:

[0022] Comparing the temperature value with the new temperature range to obtain a second comparison result;

[0023] According to the second comparison result, determining a working state of the oil tank heater.

[0024] Optionally, according to the second comparison result, determining a working state of the oil tank heater, further comprises:

[0025] If the second comparison result is less than a lower limit value of the new temperature range, then the oil tank heater is in an open state;

[0026] If the second comparison result is greater than the preset upper limit temperature value of the original temperature range, the oil tank heater is in a shutdown state.

[0027] An oil film bearing lubrication system oil temperature control device, comprising:

[0028] A temperature detection module for acquiring the temperature value of the oil tank in real time;

[0029] An operating state monitoring module for monitoring the operating state of the unit.

[0030] As described above, the present application has the following beneficial effects: when the oil film system is restarted after a long shutdown, the oil temperature is reduced by the external oil line cooling, as part of the lubricating oil in the external oil line has flowed back into the oil tank for cooling. By increasing the upper limit temperature value of the original temperature range, the oil temperature for establishing the oil film of the oil film bearing can be maintained in the optimal temperature range, thereby avoiding the damage of the oil film bearing caused by abnormal oil temperature. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A flowchart of the oil film bearing lubrication system oil temperature control method according to an embodiment of the present application;

[0032] Figure 2 A flowchart of step S110 in the oil film bearing lubrication system oil temperature control method according to an exemplary embodiment of the present application;

[0033] Figure 3 A flowchart of step S230 in the oil film bearing lubrication system oil temperature control method according to an exemplary embodiment of the present application;

[0034] Figure 4 A flowchart of step S310 in the oil film bearing lubrication system oil temperature control method according to an exemplary embodiment of the present application;

[0035] Figure 5 A flowchart of step S420 in the oil film bearing lubrication system oil temperature control method according to an exemplary embodiment of the present application;

[0036] Figure 6 A flowchart of step S320 in the oil film bearing lubrication system oil temperature control method according to an exemplary embodiment of the present application;

[0037] Figure 7 A flowchart of step S620 in the oil film bearing lubrication system oil temperature control method according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0038] Following make the embodiments of the present application specific examples, those skilled in the art can easily understand the advantages and effects of the present application from the disclosure. The present application can also be implemented or applied by other different embodiments, and various modifications or changes can be made based on different views and applications without departing from the spirit of the present application.

[0039] Please refer to Figures 1 to 7 . It should be noted that the drawings provided in the embodiments only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The actual implementation of each component may be arbitrarily changed in shape, number and proportion, and the component layout pattern may also be more complex. The structure, proportion, size, etc. shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions that the present application can be implemented. Therefore, any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are only for the convenience of clear understanding of the description, not for limiting the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0040] Before describing the embodiments of the present application in detail, the application environment of the present application is described. The technology of the present application is mainly applied to the field of industrial automation control technology. The present application is used to solve the problem that the existing technology is prone to cause boundary friction of the oil film bearing and permanent damage in the process of starting rotation from the static state of the oil film bearing.

[0041] Please refer to Figure 1 , Figure 1 is a flow chart of the oil film bearing lubrication system oil temperature control method shown in the embodiments of the present application.

[0042] As shown in Figure 1 , in an exemplary embodiment, the oil film bearing lubrication system oil temperature control method at least includes steps S110 to S130, which are described in detail as follows:

[0043] Step S110, obtaining the temperature value of the oil tank and the running state of the unit, the running state including the maintenance state or the non-maintenance state.

[0044] Step S120, if the running state is the maintenance state, the upper limit value of the original temperature range is increased to the preset upper limit temperature value as a new temperature range, and the oil tank is heated according to the new temperature range.

[0045] Step S130, if the running state is the non-maintenance state, the oil tank is heated according to the original temperature range.

[0046] In this embodiment, the temperature value of the oil tank is detected in real time by the temperature detection element, the running parameters of the unit are monitored by the monitoring module, including power, speed, temperature and other running parameters, so as to determine the running state of the unit, determine the temperature range to which the oil tank needs to be heated according to the running state of the unit, if the unit is in the maintenance state, the upper limit value of the original temperature range needs to be increased to the preset upper limit temperature, so as to ensure that the oil temperature of the oil film bearing for establishing the oil film is in the best working interval, thereby avoiding the beneficial effect of avoiding damage to the oil film bearing caused by abnormal oil temperature; if the unit is in the non-maintenance state, the oil tank heater can heat the oil tank according to the original temperature range.

[0047] Please refer to Figure 2 , Figure 2 is a flow chart of step S110 in the oil film bearing lubrication system oil temperature control method according to an example embodiment of the present application.

[0048] In an example embodiment, the temperature information of the oil tank and the running state of the unit are obtained, the running state includes the maintenance state or the non-maintenance state, and at least includes steps S210 to S230.

[0049] Step S210, monitoring the running parameters of the unit.

[0050] Step S220, comparing the running parameters with the preset running parameters to obtain a comparison result.

[0051] Step S230, determining the switching signal of the running state according to the comparison result.

[0052] In this embodiment, the running parameters of the unit are monitored by the monitoring module, the running parameters are compared with the preset running parameters, the switching signal of the unit running state is determined according to the comparison result, and the running state of the unit is switched to the maintenance state or the non-maintenance state according to the switching signal, so as to distinguish the working personnel.

[0053] Please refer to Figure 3 , Figure 3 is a flow chart of step S230 in the oil film bearing lubrication system oil temperature control method according to an example embodiment of the present application.

[0054] In an example embodiment, the switching signal of the running state is determined according to the comparison result, at least including steps S310-S320.

[0055] In step S310, if the running parameter is consistent with the preset running parameter, the unit is switched to the non-maintenance state according to the switching signal.

[0056] In step S320, if the running parameter is inconsistent with the preset running parameter, the unit is switched to the non-maintenance state according to the switching signal.

[0057] In this embodiment, the current running parameter of the unit is monitored by the comparison monitoring module, the current running parameter is compared with the preset running parameter, the switching signal of the running state of the unit is determined, and the running state of the unit is switched to the maintenance state or the non-maintenance state by the control module of the unit.

[0058] Please refer to Figure 4 , Figure 4 FIG. 10 is a flowchart of step S310 in the oil film bearing lubrication system oil temperature control method according to an example embodiment of the present application.

[0059] In an example embodiment, if the running parameter is consistent with the preset running parameter, the unit is switched to the non-maintenance state according to the switching signal, at least including steps S410-S420.

[0060] In step S410, the temperature value is compared with the original temperature range to obtain a first comparison result.

[0061] In step S420, the working state of the oil tank heater is determined according to the first comparison result.

[0062] In this embodiment, when the unit is in the non-maintenance state, the temperature value detected by the temperature detection module is compared with the upper limit value and the lower limit value of the original temperature range (38-42℃), if the temperature value is less than the lower limit value, the oil tank heater is in the open state; if the temperature value is greater than the upper limit value, the oil tank heater is in the shutdown state.

[0063] Please refer to Figure 5 , Figure 5 FIG. 11 is a flowchart of step S420 in the oil film bearing lubrication system oil temperature control method according to an example embodiment of the present application.

[0064] In an example embodiment, the working state of the oil tank heater is determined according to the first comparison result, at least including steps S510-S520.

[0065] Step S510, if the first comparison result is less than the lower limit value of the original temperature range, the oil tank heater is in an open state.

[0066] Step S520, if the first comparison result is greater than the upper limit value of the original temperature range, the oil tank heater is in a shutdown state.

[0067] Referring to Figure 6 , Figure 6 is a flow chart of step S320 in the oil film bearing lubrication system oil temperature control method according to an example embodiment of the present application.

[0068] In an example embodiment, if the operating parameter is inconsistent with the preset operating parameter, the unit is switched to a maintenance state according to the switching signal, at least including steps S610 to S620.

[0069] Step S610, the temperature value is compared with the new temperature range to obtain a second comparison result.

[0070] Step S620, the working state of the oil tank heater is determined according to the second comparison result.

[0071] In this embodiment, when the unit is in a maintenance state, the upper limit value of the original temperature range (38-42℃) is increased to a preset upper limit temperature value (47℃) to form a new temperature range (38-47℃), the temperature value is compared with the new temperature range to determine the working state of the oil tank, if the temperature value is less than the lower limit value, the oil tank heater is in an open state, if the temperature value is greater than the preset upper limit temperature value, the oil tank heater is in a shutdown state.

[0072] Referring to Figure 7 , Figure 7 is a flow chart of step S620 in the oil film bearing lubrication system oil temperature control method according to an example embodiment of the present application.

[0073] In an example embodiment, the working state of the oil tank heater is determined according to the second comparison result, at least including steps S710 to S720.

[0074] Step S710, if the second comparison result is less than the lower limit value of the new temperature range, the oil tank heater is in an open state.

[0075] Step S720, if the second comparison result is greater than the preset upper limit temperature value of the original temperature range, the oil tank heater is in a shutdown state.

[0076] The application also provides an oil film bearing lubrication system oil temperature control device, comprising: a temperature detection module, configured to acquire the temperature value of the oil tank in real time; and a running state monitoring module, configured to monitor the running state of the unit.

[0077] The working principle is that the temperature value of the oil tank is collected in real time by the temperature detection module, and the running state of the unit is monitored by the running state monitoring module, so as to determine the switching signal, and the unit switches the state of the unit to the maintenance state or the non-maintenance state according to the switching signal. When the unit is in the maintenance state, the temperature value is compared with the original temperature range, if the temperature value is less than the lower limit value of the original temperature range, it is determined that the working state of the oil tank heater is the open state; if the temperature value is greater than the upper limit value of the original temperature range, it is determined that the working state of the oil tank heater is the shutdown state; when the unit is in the non-maintenance state, the upper limit value of the original temperature range is increased to the preset upper limit temperature value to form a new temperature range, and the temperature value is compared with the new temperature range, if the temperature value is less than the lower limit value of the new temperature range, it is determined that the working state of the oil tank heater is the open state; if the temperature value is greater than the preset upper limit temperature value of the new temperature range, it is determined that the working state of the oil tank heater is the shutdown state. When the oil film system is restarted after a long shutdown, the lubricating oil in the external oil circuit has flowed back into the oil tank for cooling, and the oil temperature is reduced by the external oil circuit. By using the oil film bearing lubrication system oil temperature control method provided in the application, the upper limit temperature value of the original temperature range is increased, so that the oil temperature of the oil film bearing used for establishing the oil film can be kept in the optimal temperature interval, thereby avoiding the beneficial effect of damage to the oil film bearing caused by abnormal oil temperature.

[0078] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed by the application should be covered by the claims of the application.

Claims

1. A method for controlling oil temperature in an oil film bearing lubrication system, characterized in that, include: The temperature value of the oil tank and the operating status of the unit are obtained, including maintenance status or non-maintenance status. If the operating state is maintenance state, the upper limit of the original temperature range is increased to the preset upper limit temperature value as the new temperature range, and the oil tank is heated according to the new temperature range. If the operating state is non-maintenance state, the oil tank is heated according to the original temperature range; This includes acquiring the oil tank temperature and the unit's operating status, which includes either maintenance status or non-maintenance status, and also includes: Monitor the operating parameters of the unit; The operating parameters are compared with the preset operating parameters to obtain the comparison results; Based on the comparison results, the switching signal for the operating state is determined.

2. The oil temperature control method for an oil film bearing lubrication system according to claim 1, characterized in that, Based on the comparison results, determining the switching signal for the operating state further includes: If the operating parameters are consistent with the preset operating parameters, the unit is controlled to switch to a non-maintenance state according to the switching signal; If the operating parameters are inconsistent with the preset operating parameters, the unit will be switched to maintenance mode according to the switching signal.

3. The oil temperature control method for an oil film bearing lubrication system according to claim 2, characterized in that, If the operating parameters are consistent with the preset operating parameters, then the unit is switched to a non-maintenance state according to the switching signal, which further includes: The temperature value is compared with the original temperature range to obtain a first comparison result; Based on the first comparison result, the operating status of the oil tank heater is determined.

4. The oil temperature control method for an oil film bearing lubrication system according to claim 3, characterized in that, Determining the operating status of the oil tank heater based on the first comparison result further includes: If the first comparison result is less than the lower limit of the original temperature range, then the oil tank heater is in the on state; If the first comparison result is greater than the upper limit of the original temperature range, then the oil tank heater is in a shutdown state.

5. The oil temperature control method for an oil film bearing lubrication system according to claim 4, characterized in that, If the operating parameters are inconsistent with the preset operating parameters, the unit is controlled to switch to maintenance mode according to the switching signal, which further includes: The temperature value is compared with the new temperature range to obtain a second comparison result; Based on the second comparison result, the operating status of the oil tank heater is determined.

6. The oil temperature control method for an oil film bearing lubrication system according to claim 5, characterized in that, Determining the operating state of the oil tank heater based on the second comparison result further includes: If the second comparison result is less than the lower limit of the new temperature range, then the oil tank heater is in the on state; If the second comparison result is greater than the preset upper limit temperature value of the original temperature range, then the oil tank heater is in a shutdown state.

7. An apparatus for performing the oil temperature control method of an oil film bearing lubrication system according to claim 1, characterized in that, include: The temperature detection module is used to obtain the temperature value of the fuel tank in real time; The operation status monitoring module is used to monitor the operating status of the unit.

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