CN111857205A - Method, device and system for controlling oil temperature of lubricating oil station - Google Patents
Method, device and system for controlling oil temperature of lubricating oil station Download PDFInfo
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- CN111857205A CN111857205A CN202010768230.8A CN202010768230A CN111857205A CN 111857205 A CN111857205 A CN 111857205A CN 202010768230 A CN202010768230 A CN 202010768230A CN 111857205 A CN111857205 A CN 111857205A
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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Abstract
The embodiment of the invention provides a method, a device and a system for controlling the oil temperature of a lubricating oil station, and relates to the field of oil temperature control of lubricating oil stations. The control method comprises the following steps: acquiring an actual oil temperature value of the lubricating oil; calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value; acquiring an actual working current value of a heater of a lubricating oil station; and controlling the working state of the heater according to the actual working current value and the outer ring output current value. The control system comprises a temperature sensor, a PID controller, a PI regulator and a current sampling circuit, wherein the temperature sensor is used for acquiring the actual oil temperature value of lubricating oil at the outlet of the oil cooler; the PID controller is used for calculating the output current value of the outer ring; the current sampling circuit is used for acquiring the actual working current value of a heater of the lubricating oil station; the PI regulator is used for controlling the working state of the heater. The embodiment of the invention has the characteristics of strong adaptability, good stability, short response time and small overshoot.
Description
Technical Field
The invention relates to the field of oil temperature control of a lubricating oil station, in particular to a method, a device and a system for controlling the oil temperature of the lubricating oil station.
Background
Many facilities in power plants require oil supply from lubricating stations, such as feed pump lubricating stations, turbine lubricating stations, coal mill lubricating stations, and the like. Lubricating oil not only provides cooling's effect for equipment, ensures that all kinds of equipment operation reduce friction moreover, protection machinery and machined part, can also play rust-resistant, clean, sealed, buffering and effect such as washing impurity in addition.
The oil temperature has a great influence on the working effect of the lubricating oil. The research shows that: when the oil temperature is too low, the viscosity is increased, the lubricating effect is poor, and the rigidity and the strength of equipment materials are influenced; the oil temperature is too high, the friction coefficient is rapidly increased, and the service life of equipment is influenced. When each device of the power plant operates normally, the temperature of the lubricating oil needs to be controlled within a reasonable range, and the working performance of the lubricating oil is ensured to be kept in an optimal state.
Because the oil temperature of the lubricating oil station does not have a reasonable mathematical model at present, the conventional PID control mode adopted in industrial production is difficult to adjust parameters such as proportion, integral, differential and the like, and the problems of long control reaction time, low control precision, capacity lag, low efficiency, electric energy waste and the like occur in the operation process of each lubricating oil station of a power plant.
Disclosure of Invention
The invention aims to provide a method, a device and a system for controlling the oil temperature of a lubricating oil station, which have the characteristics of strong adaptability, good stability, short response time and small overshoot.
The embodiment of the invention is realized by the following steps:
in a first aspect, an embodiment of the present invention provides a method for controlling an oil temperature of a lubricating oil station, where the method is used to control the temperature of lubricating oil in the lubricating oil station, and includes:
acquiring an actual oil temperature value of the lubricating oil;
calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value;
acquiring an actual working current value of a heater of the lubricating oil station;
and controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
In an alternative embodiment, in the step of obtaining the actual oil temperature value of the lubricating oil, the actual oil temperature value of the lubricating oil is obtained through a temperature sensor, and the temperature sensor is arranged at an oil cooler outlet of the lubricating oil station.
In an optional embodiment, the step of calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value includes:
obtaining an oil temperature difference value according to the actual oil temperature value and a set oil temperature value;
and calculating the output current value of the outer ring according to the oil temperature difference value.
In an optional embodiment, the step of calculating the oil temperature difference value according to the actual oil temperature value and the set oil temperature value includes:
acquiring a set oil temperature value;
and obtaining the oil temperature difference value by subtracting the set oil temperature value from the actual oil temperature value.
In an optional embodiment, the step of calculating the outer loop output current value according to the oil temperature difference value includes:
and obtaining the output current value of the outer ring by performing proportional, integral and differential operation on the oil temperature difference value.
In an alternative embodiment, the step of controlling the operating state of the heater according to the actual operating current value and the outer loop output current value includes:
and controlling the heater to increase to the maximum current value allowed by the heater to operate according to the outer ring output current value.
In an optional embodiment, after the step of controlling the heater to operate up to the maximum current value allowed by the heater according to the outer ring output current value, the step of controlling the operating state of the heater according to the actual operating current value and the outer ring output current value so that the actual oil temperature value of the lubricating oil is equal to the set oil temperature value further includes:
and controlling the heater to keep the maximum current value to operate according to the actual working current value and the outer ring output current value.
In an optional embodiment, after the step of controlling the heater to keep the maximum current value running according to the actual operating current value and the outer loop output current value, the step of controlling the operating state of the heater according to the actual operating current value and the outer loop output current value further includes:
and adjusting the working current output value of the heater according to the actual working current value and the outer ring output current value.
In a second aspect, an embodiment of the present invention provides a lubricating oil station oil temperature control device for controlling the temperature of lubricating oil in a lubricating oil station, where the control device includes:
a first obtaining module: the actual oil temperature value of the lubricating oil is obtained;
a calculation module: the device is used for calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value;
a second obtaining module: the actual working current value of the heater of the lubricating oil station is obtained;
a control module: and the controller is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
In an alternative embodiment, the calculation module is further configured to: obtaining an oil temperature difference value according to the actual oil temperature value and the set oil temperature value; and calculating the output current value of the outer ring according to the oil temperature difference value.
In an alternative embodiment, the calculation module is further configured to: acquiring a set oil temperature value; and obtaining the oil temperature difference value by differentiating the set oil temperature value and the actual oil temperature value.
In a third aspect, an embodiment of the present invention provides an oil temperature control system for a lubricating oil station, which is used for controlling the temperature of lubricating oil in the lubricating oil station, and the oil temperature control system for the lubricating oil station includes a temperature sensor, a PID controller, a PI regulator and a current sampling circuit, wherein the temperature sensor is in communication connection with the PID controller, the PI regulator is in communication connection with the PID controller, and the current sampling circuit is in communication connection with the PI regulator;
the temperature sensor is arranged at an oil cooler outlet of the lubricating oil station and used for acquiring an actual oil temperature value of the lubricating oil at the oil cooler outlet;
the PID controller is used for calculating an outer ring output current value according to the difference value of the actual oil temperature value and the set oil temperature value;
the current sampling circuit is used for acquiring the actual working current value of the heater of the lubricating oil station;
and the PI regulator is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
The embodiment of the invention has the beneficial effects that: the oil temperature control system of the lubricating oil station comprises a temperature sensor, a PID controller, a PI regulator and a current sampling circuit, wherein the working current of a heater of the lubricating oil station forms an inner loop, and the temperature of the lubricating oil forms an outer loop. The temperature sensor is used for acquiring an actual oil temperature value of lubricating oil at an outlet of the oil cooler, the PID controller calculates an outer ring output current value according to a difference value of the actual oil temperature value and a set oil temperature value, and the current sampling circuit is used for acquiring an actual working current value of a heater of the lubricating oil station; the PI regulator is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value. Compared with the prior art that the temperature is controlled by a PID control method, the oil temperature control system of the lubricating oil station provided by the embodiment of the invention combines PID control and PI control, the oil temperature control system of the lubricating oil station provided by the embodiment of the invention adopts a current and temperature double-closed-loop integral separation PID control algorithm, an outer loop is mainly controlled according to a lubricating oil temperature deviation value, the integral separation PID algorithm is used, a difference value between a lubricating oil temperature target value and an actual value is used as the input of an inner loop heater current control loop, the inner loop is mainly used for controlling the lubricating oil station heater current, and an analog PI algorithm is used. The control scheme can successfully solve the problems existing in the PID control mode of the oil temperature of the lubricating oil station, and has the characteristics of strong adaptability, good stability, short response time, small overshoot and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic block diagram of an oil temperature control system of a lubricating oil station according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a method for controlling an oil temperature of a lubricating oil station according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an oil temperature control device of a lubricating oil station according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides an oil temperature control system for a lubrication oil station, which is used for controlling the temperature of the lubrication oil in the lubrication oil station. The oil temperature control system of the lubricating oil station comprises a temperature sensor, a PID controller, a PI regulator and a current sampling circuit, wherein the temperature sensor is in communication connection with the PID controller, the PI regulator is in communication connection with the PID controller, and the current sampling circuit is in communication connection with the PI regulator; the temperature sensor is arranged at an oil cooler outlet of the lubricating oil station and used for acquiring an actual oil temperature value of the lubricating oil at the oil cooler outlet; the PID controller is used for calculating the output current value of the outer ring according to the difference value of the actual oil temperature value and the set oil temperature value; the current sampling circuit is used for acquiring the actual working current value of a heater of the lubricating oil station; the PI regulator is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
It should be noted that, in the embodiment of the present invention, the operating current of the heater of the lubricating oil station forms an inner loop, and the temperature of the lubricating oil forms an outer loop.
Compared with the prior art that the temperature is controlled by a PID control method, the oil temperature control system of the lubricating oil station provided by the embodiment of the invention combines PID control and PI control, the oil temperature control system of the lubricating oil station provided by the embodiment of the invention adopts a current and temperature double-closed-loop integral separation PID control algorithm, an outer loop is mainly controlled according to a lubricating oil temperature deviation value, the integral separation PID algorithm is used, a difference value between a lubricating oil temperature target value and an actual value is used as the input of an inner loop heater current control loop, the inner loop is mainly used for controlling the lubricating oil station heater current, and an analog PI algorithm is used. The control scheme can successfully solve the problems existing in the PID control mode of the oil temperature of the lubricating oil station, and has the characteristics of strong adaptability, good stability, short response time, small overshoot and the like.
Referring to fig. 2, an embodiment of the present invention provides a method for controlling an oil temperature of a lubricating oil station, for controlling the temperature of the lubricating oil in the lubricating oil station, where the method includes:
step S100: and acquiring the actual oil temperature value of the lubricating oil.
Alternatively, in the step S100, the actual oil temperature value of the lubricating oil is obtained through a temperature sensor, which may be disposed at an outlet of an oil cooler of the lubricating oil station and electrically connected with the PID controller, so as to transmit the obtained actual oil temperature value of the lubricating oil to the PID controller.
Step S200: and calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value.
In an alternative embodiment, this step S200 may include the following substeps S210 and substep S220.
Substep S210: and obtaining an oil temperature difference value according to the actual oil temperature value and the set oil temperature value.
The substep S210 may include: substep S211: acquiring a set oil temperature value; and, substep S212: and (4) making a difference between the set oil temperature value and the actual oil temperature value to obtain an oil temperature difference value.
The set oil temperature values of the different types of lubricating oils are also different. The set oil temperature value can be manually input or automatically generated according to different types of lubricating oil. For example, if the lubricating oil is 32# oil, the range of the set oil temperature value can be 40-45 ℃; if 46# oil is selected as the lubricating oil, the range of the set oil temperature value can be 45-50 ℃.
After the oil temperature difference is calculated, the substep S220 is executed: and calculating the output current value of the outer ring according to the oil temperature difference value.
Alternatively, in the sub-step S220, the oil temperature difference may be subjected to proportional, integral and differential operations to obtain the outer loop output current value. The oil temperature difference is input to a PID controller, and the outer ring output current value is calculated through an algorithm preset in the PID controller.
It should be noted that, the preset algorithm stored in the PID controller may refer to the prior art solution of controlling the heater current only by the PID controller. The improvement of the embodiment of the invention is that the outer ring output current value calculated by the PID controller is considered, on the basis, the actual current of the heater is obtained, and the current of the heater is adjusted according to the actual current, so that the method has the characteristics of strong adaptability, good stability, short response time, small overshoot and the like.
Step S300: and acquiring the actual working current value of the heater of the lubricating oil station.
Alternatively, the actual operating current value of the heater may be obtained by the current sampling circuit, and the actual operating current value is used as the input of the PI regulator, so as to adjust the operating current of the heater.
Step S400: and controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
In the embodiment of the invention, the inner loop compares the output value of the outer ring with the measured value of the working current of the heater of the lubricating oil station, the deviation of the output value of the outer ring is sent to the analog PI regulator for operation, and the operation result is output to control the working of the heater of the lubricating oil station. The larger the working current of the heater is, the larger the power output by the heater is, the shorter the time required by heating and warming the oil temperature of the lubricating oil station is, and the more sensitive the reaction is.
Optionally, the lubricating oil station is designed with 3 groups of heaters, the power of each group of heaters can be 5KW, the working voltage can be 220V, and when 3 groups of heaters are operated simultaneously, the working current reaches the maximum value of 68.1A.
In an alternative embodiment, the step of controlling the operating state of the heater according to the actual operating current value and the outer ring output current value so that the actual oil temperature value of the lubricating oil is equal to the set oil temperature value, i.e. the step S400, may include the sub-step S410: and controlling the heater to increase to the maximum current value allowed by the heater to operate according to the output current value of the outer ring.
It should be noted that, when the step S410 is executed, the operating current of the heater of the lubricating oil station is changed and increased rapidly, and when a maintenance worker inputs a target value T0 to the outer ring temperature control circuit (for example, 32# oil, the set oil temperature value may be in a range of 40 to 45 ℃), the output value of the outer ring temperature control circuit is the maximum. The inner ring control loop controls the working current of the heater of the lubricating oil station through the PI regulator according to the output value of the outer ring, so that the working current of the heater can be increased to the maximum current value allowed by the heater more quickly.
After the sub-step S410, the step S400 may further include a sub-step S420: based on the actual operating current value and the outer loop output current value, the heater is controlled to maintain the maximum current value for operation (e.g., the heater is operated at the current value of 68.1A as described above).
When step S420 is executed, the heater is operated with a constant maximum current, and the temperature of the oil at the lubrication station is quickly increased. At this stage, the outer loop temperature control loop is still in saturation, while the inner loop heater current control loop is always in linear regulation. Although the lubricating oil is interfered by external factors such as resistance and the like in the temperature rising process to cause current fluctuation, the inner ring current regulator can quickly and timely resist the interference factors and ensure that the working current of the heater of the lubricating oil station is always kept at the maximum value so as to ensure that the oil temperature of the lubricating oil station quickly and stably rises.
After the sub-step S420, step S400 may further include a sub-step S430: and adjusting the working current output value of the heater according to the actual working current value and the outer ring output current value.
It should be noted that, when the step S420 is executed, the oil temperature control system is in the stable adjustment process. The process mainly comprises that when an actual oil temperature measured by an outer loop temperature sensor reaches a target temperature value set by a maintenance worker, a lubricating oil temperature loop control state of an outer loop exits from a saturated state, a PID (proportion integration differentiation) controller of the outer loop starts to be adjusted, a current loop of an inner loop is continuously in an unsaturated state, and when an output value of the lubricating oil temperature of the outer loop changes, a working current output value of a heater can be adjusted by the inner loop current control loop.
Through the substep S410, the substep S420 and the substep S430, the lubricating oil of the lubricating oil station can be quickly and stably increased to the set oil temperature value.
Referring to fig. 3, an embodiment of the present invention provides a device for controlling oil temperature of a lubricating oil station, for controlling the temperature of the lubricating oil station, where the device includes: the device comprises a first acquisition module, a calculation module, a second acquisition module and a control module.
A first obtaining module: for obtaining the actual oil temperature value of the lubricating oil.
Optionally, in an embodiment of the present invention, the step S100 is executed by the first obtaining module.
A calculation module: and the method is used for calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value.
Optionally, in an embodiment of the present invention, the step S200 is executed by the computing module.
The calculation module is further configured to: obtaining an oil temperature difference value according to the actual oil temperature value and the set oil temperature value; and calculating the output current value of the outer ring according to the oil temperature difference value.
Optionally, in an embodiment of the present invention, the sub-step S210 and the sub-step S220 are executed by the computing module.
The calculation module is further configured to: acquiring a set oil temperature value; and obtaining an oil temperature difference value by subtracting the set oil temperature value from the actual oil temperature value.
Optionally, in an embodiment of the present invention, the sub-step S211 and the sub-step S212 are executed by the computing module.
A second obtaining module: for obtaining the actual operating current value of the heater of the lubricating oil station.
Optionally, in an embodiment of the present invention, the step S300 is executed by the second obtaining module.
A control module: and the control circuit is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value.
Optionally, in the embodiment of the present invention, the step S400 is executed by the control module.
The control module is further configured to: controlling the heater to increase to the maximum allowable current value of the heater according to the output current value of the outer ring; then, controlling the heater to keep the maximum current value to operate according to the actual working current value and the outer ring output current value; and then, adjusting the working current output value of the heater according to the actual working current value and the outer ring output current value.
Optionally, in an embodiment of the present invention, the sub-step S410, the sub-step S420, and the sub-step S430 are executed by the control module.
Referring to fig. 1 to fig. 3, a method, an apparatus and a system for controlling a lubrication station according to an embodiment of the present invention are: the oil temperature control system comprises a temperature sensor, a PID controller, a PI regulator and a current sampling circuit, wherein the working current of a heater of a lubricating oil station forms an inner loop, and the temperature of lubricating oil forms an outer loop. The temperature sensor is used for acquiring an actual oil temperature value of lubricating oil at an outlet of the oil cooler, the PID controller calculates an outer ring output current value according to a difference value of the actual oil temperature value and a set oil temperature value, and the current sampling circuit is used for acquiring an actual working current value of a heater of the lubricating oil station; the PI regulator is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value. Compared with the prior art that the temperature is controlled by a PID control method, the oil temperature control system of the lubricating oil station provided by the embodiment of the invention combines PID control and PI control, the oil temperature control system of the lubricating oil station provided by the embodiment of the invention adopts a current and temperature double-closed-loop integral separation PID control algorithm, an outer loop is mainly controlled according to a lubricating oil temperature deviation value, the integral separation PID algorithm is used, a difference value between a lubricating oil temperature target value and an actual value is used as the input of an inner loop heater current control loop, the inner loop is mainly used for controlling the lubricating oil station heater current, and an analog PI algorithm is used. The control scheme can successfully solve the problems existing in the PID control mode of the oil temperature of the lubricating oil station, and has the characteristics of strong adaptability, good stability, short response time, small overshoot and the like.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A lubricating oil station oil temperature control method for controlling the lubricating oil temperature of a lubricating oil station is characterized by comprising the following steps:
acquiring an actual oil temperature value of the lubricating oil;
calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value;
acquiring an actual working current value of a heater of the lubricating oil station;
and controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
2. The method for controlling oil temperature of a lubricating oil station according to claim 1, wherein in the step of obtaining the actual oil temperature value of the lubricating oil, the actual oil temperature value of the lubricating oil is obtained by a temperature sensor provided at an outlet of an oil cooler of the lubricating oil station.
3. The method for controlling oil temperature of a lubricating oil station according to claim 1, wherein the step of calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value comprises:
obtaining an oil temperature difference value according to the actual oil temperature value and a set oil temperature value;
and calculating the output current value of the outer ring according to the oil temperature difference value.
4. The method for controlling the oil temperature of a lubrication oil station according to claim 3, wherein the step of calculating the oil temperature difference value according to the actual oil temperature value and a set oil temperature value comprises:
acquiring a set oil temperature value;
and obtaining the oil temperature difference value by subtracting the set oil temperature value from the actual oil temperature value.
5. The lubrication oil station oil temperature control method according to claim 3 or 4, wherein the step of calculating the outer ring output current value according to the oil temperature difference value includes:
and obtaining the output current value of the outer ring by performing proportional, integral and differential operation on the oil temperature difference value.
6. The lubrication oil station oil temperature control method according to claim 1, wherein the step of controlling the operating state of the heater so that the actual oil temperature value of the lubrication oil is equal to the set oil temperature value based on the actual operating current value and the outer loop output current value includes:
and controlling the heater to increase to the maximum current value allowed by the heater to operate according to the outer ring output current value.
7. The lubrication oil station oil temperature control method according to claim 6, wherein, after the step of controlling the heater to increase to the maximum current value allowed for the heater according to the outer loop output current value, the step of controlling the operating state of the heater according to the actual operating current value and the outer loop output current value further comprises:
and controlling the heater to keep the maximum current value to operate according to the actual working current value and the outer ring output current value.
8. The method of claim 7, wherein after the step of controlling the heater to maintain the maximum current value to operate according to the actual operating current value and the outer loop output current value, the step of controlling the operating state of the heater according to the actual operating current value and the outer loop output current value further comprises:
and adjusting the working current output value of the heater according to the actual working current value and the outer ring output current value.
9. A lubrication oil station oil temperature control apparatus for controlling a lubrication oil temperature of a lubrication oil station, characterized by comprising:
a first obtaining module: the actual oil temperature value of the lubricating oil is obtained;
a calculation module: the device is used for calculating the output current value of the outer ring according to the actual oil temperature value and the set oil temperature value;
a second obtaining module: the actual working current value of the heater of the lubricating oil station is obtained;
a control module: and the controller is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
10. A lubricating oil station oil temperature control system is used for controlling the temperature of lubricating oil of a lubricating oil station and is characterized by comprising a temperature sensor, a PID controller, a PI regulator and a current sampling circuit, wherein the temperature sensor is in communication connection with the PID controller, the PI regulator is in communication connection with the PID controller, and the current sampling circuit is in communication connection with the PI regulator;
the temperature sensor is arranged at an oil cooler outlet of the lubricating oil station and used for acquiring an actual oil temperature value of the lubricating oil at the oil cooler outlet;
the PID controller is used for calculating an outer ring output current value according to the difference value of the actual oil temperature value and the set oil temperature value;
the current sampling circuit is used for acquiring the actual working current value of the heater of the lubricating oil station;
and the PI regulator is used for controlling the working state of the heater according to the actual working current value and the outer ring output current value so as to enable the actual oil temperature value of the lubricating oil to be equal to the set oil temperature value.
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| CN202010768230.8A CN111857205A (en) | 2020-08-03 | 2020-08-03 | Method, device and system for controlling oil temperature of lubricating oil station |
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| CN202010768230.8A CN111857205A (en) | 2020-08-03 | 2020-08-03 | Method, device and system for controlling oil temperature of lubricating oil station |
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| CN (1) | CN111857205A (en) |
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| CN203759564U (en) * | 2014-03-12 | 2014-08-06 | 昆明理工大学 | Double closed-loop temperature control circuit |
| CN204203804U (en) * | 2014-11-17 | 2015-03-11 | 国网辽宁省电力有限公司抚顺供电公司 | Heating control device in transformer oil filter |
| CN108666856A (en) * | 2018-08-07 | 2018-10-16 | 核工业理化工程研究院 | Power stability type solid state laser and control method |
| CN109144133A (en) * | 2018-09-20 | 2019-01-04 | 南京工程学院 | A kind of temperature of oil in transformer Online Monitoring Control System |
| CN209385992U (en) * | 2018-10-17 | 2019-09-13 | 北京国电龙源环保工程有限公司 | A kind of lubricating oil station oil temperature monitoring system |
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2020
- 2020-08-03 CN CN202010768230.8A patent/CN111857205A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203759564U (en) * | 2014-03-12 | 2014-08-06 | 昆明理工大学 | Double closed-loop temperature control circuit |
| CN204203804U (en) * | 2014-11-17 | 2015-03-11 | 国网辽宁省电力有限公司抚顺供电公司 | Heating control device in transformer oil filter |
| CN108666856A (en) * | 2018-08-07 | 2018-10-16 | 核工业理化工程研究院 | Power stability type solid state laser and control method |
| CN109144133A (en) * | 2018-09-20 | 2019-01-04 | 南京工程学院 | A kind of temperature of oil in transformer Online Monitoring Control System |
| CN209385992U (en) * | 2018-10-17 | 2019-09-13 | 北京国电龙源环保工程有限公司 | A kind of lubricating oil station oil temperature monitoring system |
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