CN116446967A - Turbine lubricating oil temperature adjusting method and device - Google Patents

Turbine lubricating oil temperature adjusting method and device Download PDF

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Publication number
CN116446967A
CN116446967A CN202310420709.6A CN202310420709A CN116446967A CN 116446967 A CN116446967 A CN 116446967A CN 202310420709 A CN202310420709 A CN 202310420709A CN 116446967 A CN116446967 A CN 116446967A
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China
Prior art keywords
data
regulating valve
opening
real
comprehensive
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Inventor
喜静波
陈涛
李壮
吕继军
王鑫磊
李梦琪
张松
荣旭
李文轩
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Beijing Taiyanggong Gas Fired Thermal Power Co ltd
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Beijing Taiyanggong Gas Fired Thermal Power Co ltd
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Priority to CN202310420709.6A priority Critical patent/CN116446967A/en
Publication of CN116446967A publication Critical patent/CN116446967A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/18—Lubricating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

The invention discloses a method and a device for regulating the temperature of turbine lubricating oil, and relates to the technical field of turbine lubricating oil temperature control, wherein the method comprises the following steps: collecting real-time temperature data of turbine lubricating oil; determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value; determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance; and controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve. The invention can improve the temperature control effect of the lubricating oil.

Description

Turbine lubricating oil temperature adjusting method and device
Technical Field
The invention relates to the technical field of turbine lubricating oil temperature control, in particular to a turbine lubricating oil temperature adjusting method and device.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
In order to ensure safe and stable operation of the steam turbine, high requirements are placed on the accuracy of temperature control of lubricating oil. At present, a 100% electric regulating valve is added in front of a manual bypass valve of a turbine lubricating oil cooling system, and when the total load is low or the air temperature is low, only the main regulating valve is required to be opened; when the total load is higher or the ambient temperature is higher, the bypass regulating valve is required to be opened again for regulation, so that the main regulating valve and the bypass regulating valve can jointly control the temperature of the lubricating oil.
However, in the operation process of the method, the main path regulating valve and the bypass regulating valve cannot simultaneously and automatically regulate the temperature of lubricating oil, and an operator is required to manually operate the main path regulating valve and the bypass regulating valve according to the operation working condition of a unit so as to realize the control of the temperature of the lubricating oil, so that the temperature control effect of the lubricating oil is poor and the normal operation of a steam turbine may be influenced.
Disclosure of Invention
The embodiment of the invention provides a temperature regulating method for lubricating oil of a steam turbine, which is used for enabling a main regulating valve and a bypass regulating valve to simultaneously and automatically regulate the temperature of the lubricating oil, improving the temperature control effect of the lubricating oil and avoiding influencing the normal operation of the steam turbine, and comprises the following steps:
Collecting real-time temperature data of turbine lubricating oil;
determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value;
determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode;
determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance;
and controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve.
The embodiment of the invention also provides a temperature regulating device for lubricating oil of a steam turbine, which is used for enabling a main path regulating valve and a bypass regulating valve to simultaneously and automatically regulate the temperature of the lubricating oil, improving the temperature control effect of the lubricating oil and avoiding influencing the normal operation of the steam turbine, and comprises the following components:
The acquisition module is used for acquiring real-time temperature data of the turbine lubricating oil;
the flow determining module is used for determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value;
the comprehensive valve position determining module is used for determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode;
the opening determining module is used for determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance;
and the adjusting module is used for controlling the main path adjusting valve and the bypass adjusting valve to adjust the temperature of the turbine lubricating oil according to the opening data of the main path adjusting valve and the opening data of the bypass adjusting valve.
The embodiment of the invention also provides computer equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the turbine lubricating oil temperature regulating method when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the turbine lubricating oil temperature adjusting method when being executed by a processor.
The embodiment of the invention also provides a computer program product, which comprises a computer program, wherein the computer program is executed by a processor to realize the turbine lubricating oil temperature regulating method.
In the embodiment of the invention, real-time temperature data of turbine lubricating oil is collected; determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value; determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode; determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance; and controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve. Compared with the technical scheme that the main path regulating valve and the bypass regulating valve cannot simultaneously and automatically regulate the temperature of lubricating oil in the prior art, the method has the advantages that through the association relation between the opening of the main path regulating valve and the comprehensive valve position (namely, the comprehensive opening data corresponding to the predicted cooling water flow in the automatic regulating mode of the main path regulating valve and the bypass regulating valve) and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, after the real-time flow data of the required cooling water are obtained, the real-time comprehensive valve position is calculated, and further, the opening data of the main path regulating valve and the opening data of the bypass regulating valve can be obtained through calculation through the association relation, the manual operation of operators is not needed, the simultaneous automatic control of the main path regulating valve and the bypass regulating valve on the temperature of the lubricating oil of the steam turbine can be realized, the temperature control effect of the lubricating oil can be improved, and the normal operation of the steam turbine is prevented from being influenced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a flow chart of a method for regulating the temperature of turbine lubricating oil according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for determining the association relationship between the opening of the main path regulating valve and the opening of the bypass regulating valve and the comprehensive valve position, which is provided in the embodiment of the invention;
FIG. 3 is a graph illustrating an example of an opening degree of a main path adjusting valve and a comprehensive valve position according to an embodiment of the present invention;
FIG. 4 is a graph illustrating an exemplary opening degree and a comprehensive valve position of a bypass regulating valve according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a turbine lube oil temperature regulation apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a computer device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
In the description of the present specification, the terms "comprising," "including," "having," "containing," and the like are open-ended terms, meaning including, but not limited to. Reference to the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is used to schematically illustrate the practice of the present application, and is not limited thereto and may be appropriately adjusted as desired.
In order to ensure safe and stable operation of the steam turbine, high requirements are placed on the accuracy of temperature control of lubricating oil. At present, a 100% electric regulating valve is added in front of a bypass manual valve of a turbine lubricating oil cooling system, so that the main regulating valve and the bypass regulating valve can jointly control the lubricating oil temperature. Specifically, when the total load is low or the air temperature is low, only the main path regulating valve is required to be opened; when the total load is higher or the ambient temperature is higher, the bypass regulating valve is required to be opened again for regulation, so that the main regulating valve and the bypass regulating valve can jointly control the temperature of the lubricating oil.
However, it has been found that this method has a problem of the cooperative adjustment of the two valves of the main-path regulating valve and the bypass regulating valve. That is, in the operation process, the main path regulating valve and the bypass regulating valve cannot simultaneously and automatically regulate the temperature of the lubricating oil, and an operator is required to manually operate the main path regulating valve or the bypass regulating valve according to the unit operation condition so as to realize the control of the temperature of the lubricating oil, so that the method has the following problems:
1. the main path regulating valve and the bypass regulating valve can not simultaneously and automatically regulate the temperature of lubricating oil, and the regulating process is not flexible and complete;
2. The operator manually operates the main path regulating valve or the bypass regulating valve according to the operation working condition of the unit, so that the workload of the operator is increased, and more human resources are consumed;
3. the temperature control of the lubricating oil cannot be realized in the whole process, so that the temperature control effect of the lubricating oil is poor, and the normal operation of the steam turbine can be influenced.
Aiming at the problems, the embodiment of the invention provides a turbine lubricating oil temperature regulation scheme which is used for reducing manual operation, realizing that a main regulating valve and a bypass regulating valve simultaneously and automatically regulate the temperature of lubricating oil, realizing the whole-course temperature control of the lubricating oil, improving the temperature control effect of the lubricating oil and avoiding influencing the normal operation of a turbine.
As shown in fig. 1, a flowchart of a method for adjusting temperature of lubricating oil of a steam turbine according to an embodiment of the present invention may include the following steps:
step 101, collecting real-time temperature data of turbine lubricating oil;
102, determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value;
step 103, determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode;
104, determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time flow data and the association relation between the opening of the bypass regulating valve and the comprehensive valve position;
and 105, controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve.
In the embodiment of the invention, real-time temperature data of turbine lubricating oil is collected; determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value; determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode; determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance; and controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve. Compared with the technical scheme that the main path regulating valve and the bypass regulating valve cannot simultaneously and automatically regulate the temperature of lubricating oil in the prior art, the method has the advantages that through the association relation between the opening of the main path regulating valve and the comprehensive valve position (namely, the comprehensive opening data corresponding to the predicted cooling water flow in the automatic regulating mode of the main path regulating valve and the bypass regulating valve) and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, after the real-time flow data of the required cooling water are obtained, the real-time comprehensive valve position is calculated, and further, the opening data of the main path regulating valve and the opening data of the bypass regulating valve can be obtained through calculation through the association relation, the manual operation of operators is not needed, the simultaneous automatic control of the main path regulating valve and the bypass regulating valve on the temperature of the lubricating oil of the steam turbine can be realized, the temperature control effect of the lubricating oil can be improved, and the normal operation of the steam turbine is prevented from being influenced.
In the embodiment of the invention, the turbine lubricating oil temperature adjusting method shown in fig. 1 can be applied to a turbine lubricating oil cooling system and can also be applied to other lubricating oil temperature adjusting systems.
In one embodiment, prior to performing the turbine lube oil temperature regulation method illustrated in FIG. 1, it is first necessary to determine the flow characteristics of each of the main and bypass regulator valves of the turbine lube oil system. The method comprises the steps of determining the association relation between the opening of a main path regulating valve and a comprehensive valve position and the association relation between the opening of a bypass regulating valve and the comprehensive valve position under the mode of the comprehensive valve position (namely, the main path regulating valve and the bypass regulating valve are both in an automatic regulating mode), wherein the comprehensive valve position refers to the predicted comprehensive opening data of the valve position under the mode of the comprehensive valve position.
As shown in fig. 2, the correlation of the opening degree of the main path regulating valve and the integrated valve position, and the correlation of the opening degree of the bypass regulating valve and the integrated valve position may be determined by:
step 201, obtaining multiple sets of test data through multiple times of turbine lubricating oil cooling water flow characteristic tests, wherein each set of test data comprises test opening data of a main path regulating valve, test opening data of a bypass regulating valve and test flow data of cooling water;
Step 202, clustering a plurality of groups of test data by using a K-means clustering algorithm, and removing invalid data in the plurality of groups of test data according to a clustering result;
step 203, after invalid data in a plurality of groups of test data are removed, determining a test comprehensive valve position corresponding to each test flow data according to the test flow data of the cooling water in each group of test data;
204, fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the main path regulating valve in each set of test data by using a least square algorithm to obtain the association relation between the opening of the main path regulating valve and the comprehensive valve position; and fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the bypass regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
In particular, in step 201, a turbine lubrication oil cooling water flow characteristic test may be performed after the turbine unit is shut down. Specifically, before testing, an ultrasonic flowmeter can be installed on a main path regulating valve of a turbine lubricating oil cooling water system and a main pipe in front of a bypass regulating valve, then the main path regulating valve is gradually opened by 5%, after the main path regulating valve is fully opened, the bypass regulating valve is gradually opened by 5% until the bypass regulating valve is fully opened, and test opening data of a main path regulating test valve, test opening data of the bypass regulating valve and test flow data of cooling water obtained through testing are collected after testing is finished. In addition, in order to eliminate the influence of the test error on the valve flow characteristic, multiple groups of repeated tests can be performed to obtain multiple groups of test data.
In step 202, in order to further eliminate the test error, invalid data in the multiple sets of test data may be filtered, specifically, the multiple sets of test data may be clustered by a K-means clustering algorithm, and the invalid data in the multiple sets of test data may be removed according to the clustering result.
In step 203, after invalid data in the multiple sets of test data is removed, a test integrated valve position corresponding to each test flow data may be determined according to the test flow data of the cooling water in each set of test data.
In specific implementation, the comprehensive test valve position corresponding to each test flow data can be calculated according to the test flow data of the cooling water in each group of test data through a PID control algorithm. The test comprehensive valve position refers to the predicted comprehensive opening data corresponding to each test flow data under the comprehensive valve position mode.
The PID algorithm, which is "proportional (proportional), integral (integral), derivative (derivative)", is a common "stability-maintaining" control algorithm, is a mature technology, and is not described in detail herein.
In step 204, a least square algorithm may be used to fit the relationship between the test comprehensive valve position corresponding to each test flow data and the test opening data of the main path regulating valve in each set of test data, so as to obtain the association relationship between the opening of the main path regulating valve and the comprehensive valve position; fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the bypass regulating valve in each set of test data to obtain the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
In one embodiment, the relationship between the opening of the main regulating valve and the integrated valve position may be in the form of a first functional relationship, where the first functional relationship is a relationship 1:
f 1 (x)＝k 1 x 3 +k 2 x 2 +k 3 x+k 4 relation 1
Wherein k is 1 、k 2 、k 3 、k 4 4 constants each; f (f) 1 (x) The opening degree of the main path regulating valve is represented, and x represents the comprehensive valve position.
In the specific implementation, f is the maximum limit of the opening of the main regulating valve 1 (x) The value range of (2) can be 0-f 1 (x) The maximum value of the opening degree of the main way regulating valve is not more than.
For example, the correlation between the opening of the main path adjusting valve and the integrated valve position may be a curve, as shown in fig. 3, which is an exemplary graph of the opening of the main path adjusting valve and the integrated valve position, and in fig. 3, the first functional relation of the fitted curve is:
f 1 (x)＝0.0025x 3 -0.1782x 2 +4.8176x+5.873
as can be seen from FIG. 3, f 1 (x) The value range of (2) is [0,100 ]]The method comprises the steps of carrying out a first treatment on the surface of the The value range of the comprehensive valve position is [0,46 ]]The method comprises the steps of carrying out a first treatment on the surface of the That is, at 46 integrated valve positions, the opening degree of the main-path regulating valve is approximately 100, and the maximum value has been reached. At this time, even if the flow rate of the cooling water increases, the integrated valve position increases, and the opening degree of the main path regulating valve is not changed any more.
In one embodiment, the relationship between the opening of the bypass regulator valve and the integrated valve position is in the form of a second functional relationship, where the second functional relationship is the relationship 2:
f 2 (x)＝b 1 x 5 +b 2 x 4 +b 3 x 3 +b 4 x 2 +b 5 x+b 6 Relation 2
Wherein b 1 、b 2 、b 3 、b 4 、b 5 、b 6 Respectively 6 constants f 2 (x) The opening of the bypass regulating valve is represented, and x represents the comprehensive valve position.
In the specific implementation, f is the maximum limit of the opening of the bypass regulating valve 2 (x) The value range of (2) can be 0-f 2 (x) And the maximum value of the opening degree of the bypass regulating valve is less than or equal to the maximum value, and when the opening degree of the bypass regulating valve is 0, the bypass regulating valve is not started.
In a specific implementation, the bypass control valve is used as an auxiliary main control valve to perform temperature control, so that the bypass control valve is started when the main control valve is opened to the maximum opening degree.
For example, the association relationship between the opening of the bypass regulating valve and the integrated valve position may be a curve, as shown in fig. 4, which is an exemplary graph of the opening of the bypass regulating valve and the integrated valve position, and in fig. 4, the second functional relation of the fitted curve is:
f 2 (x)＝3×10 -6 x 5 -0.001x 4 +0.1413x 3 -9.8531x 2 +341.29x-4688.5
as can be seen from FIG. 4, f 2 (x) The value range of (2) is [0,100 ]]The method comprises the steps of carrying out a first treatment on the surface of the The value range of the comprehensive valve position is (46, 100)]The method comprises the steps of carrying out a first treatment on the surface of the That is, when the integrated valve position exceeds 46, the main regulating valve is opened to the maximum opening, and the bypass regulating valve is automatically opened at the moment; when the integrated valve position reaches approximately 100, the bypass regulating valve is opened to the maximum opening.
Therefore, the association relation between the opening of the main regulating valve and the comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position can be obtained through the mode, and further the temperature of the turbine lubricating oil can be regulated by controlling the main regulating valve and the bypass regulating valve of the turbine lubricating oil system based on the association relation between the opening of the two regulating valves and the comprehensive valve position.
The method for regulating the temperature of the lubricating oil of the steam turbine will be described in detail.
In step 101 described above, real-time temperature data of turbine lube oil may be collected.
In the step 102, the real-time flow data of the required cooling water may be determined according to the real-time temperature data and the preset lubricating oil temperature value.
In specific implementation, a difference value between the real-time temperature data and a preset lubricating oil temperature value can be calculated, and the real-time flow data of the required cooling water can be determined according to the difference value.
In the step 103, a real-time integrated valve position may be determined according to the real-time flow data of the required cooling water.
In the concrete implementation, the real-time comprehensive valve position can be determined by a PID control algorithm and the real-time flow data of the required cooling water. The real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode.
In the step 104, the opening data of the main path regulating valve can be determined according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; and determining the opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
In one embodiment, in step 103, determining the opening data of the main path adjusting valve according to the real-time comprehensive valve position and the association relationship between the opening of the main path adjusting valve and the comprehensive valve position, which may specifically include:
substituting the real-time comprehensive valve position into a first functional relation, and calculating to obtain opening data of the main path regulating valve.
In specific implementation, the real-time integrated valve position x can be substituted into the above relation 1 to calculate the opening data f of the main path regulating valve 1 (x)。
In one embodiment, in step 103, determining the opening data of the bypass regulator valve according to the real-time integrated valve position and the association relationship between the opening of the bypass regulator valve and the integrated valve position, which may specifically include:
substituting the real-time comprehensive valve position into a second functional relation, and calculating to obtain the opening data of the bypass regulating valve.
In specific implementation, the real-time integrated valve position x may be substituted into the above relation 2 to calculate the opening data f of the bypass regulating valve 2 (x)。
For example, the real-time integrated valve position is substituted into the functional relation of the curves shown in fig. 3 and 4, respectively. For example, when the real-time integrated valve position x is 30, f is obtained 1 (30) Approximately 58, namely opening data of the main path regulating valve is approximately 58; f (f) 2 (30) About-244, i.e., the opening data of the bypass regulating valve is approximately 0; when the comprehensive valve position x is 46, f is obtained 1 (46) Approximately 98, namely the opening degree of the main path regulating valve is approximately opened to the maximum of 100; f (f) 2 (46) Approximately 0, the opening data of the bypass regulating valve is approximately 0; when the comprehensive valve position x is 60, f is obtained 1 (60) The opening data of the main path regulating valve is about 100 to be the maximum value of 200; f (f) 2 (60) =20, and the opening degree data of the bypass regulating valve is approximately 20.
In the step 105, the main path regulating valve and the bypass regulating valve may be controlled to be opened to the corresponding opening according to the calculated opening data of the main path regulating valve and the calculated opening data of the bypass regulating valve, so as to realize the regulation of the temperature of the turbine lubricating oil.
Thus, through the method of the embodiment of the invention, the main path regulating valve firstly regulates the opening of the main path regulating valve until the opening reaches the maximum, at the moment, if the real-time flow data of the required cooling water becomes large so as to enlarge the calculated comprehensive valve position, the bypass regulating valve is automatically opened, and the opening of the main path regulating valve and the bypass regulating valve can be regulated according to the change of the comprehensive valve position, so that the temperature of the turbine lubricating oil can be simultaneously and automatically regulated; the operation of the main path regulating valve or the bypass regulating valve is not needed by operators, so that the manpower resource is saved; in addition, the temperature of the lubricating oil can be controlled in the whole process, the temperature control effect of the lubricating oil is improved, and the influence on the normal operation of the steam turbine is avoided.
In one embodiment, the main path regulating valve and the bypass regulating valve can also have some abnormalities when simultaneously and automatically regulating the temperature of turbine lubricating oil, so that the embodiment of the invention can further comprise:
acquiring real-time opening data of a main path regulating valve and real-time opening data of a bypass regulating valve;
and sending an abnormal early warning when the deviation between the opening data of the main path regulating valve and the real-time opening data of the main path regulating valve is larger than first preset data, the difference between the opening data of the bypass regulating valve and the real-time opening data of the bypass regulating valve is larger than second preset data, or the difference between the real-time temperature data of the turbine lubricating oil and the preset lubricating oil temperature value is larger than a preset temperature difference, so that an operator can control the main path regulating valve or the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to an abnormal early warning switching manual mode.
In the specific implementation, in order to ensure the reliability of the automatic temperature control of the regulating valve, if one of the following conditions is met, an abnormal alarm is sent out:
1. the deviation between the opening data of the main path regulating valve and the real-time opening data of the main path regulating valve is larger than first preset data; if the deviation between the opening of the main path regulating valve and the real-time opening of the main path regulating valve is more than 20%;
2. The difference value between the opening data of the bypass regulating valve and the real-time opening data of the bypass regulating valve is larger than second preset data; for example, the deviation of the opening of the bypass regulating valve from the real-time opening of the bypass regulating valve is greater than 20%;
3. the difference value between the real-time temperature data of the turbine lubricating oil and the preset lubricating oil temperature value is larger than the preset temperature difference; the difference between the real-time temperature data of the turbine lubricating oil and the preset lubricating oil temperature value is larger than 30 ℃.
Operators can control the main regulating valve or the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to an abnormal early warning switching manual mode.
In the embodiment of the invention, the abnormal early warning may cause the main path regulating valve or the bypass regulating valve to be suddenly opened or closed, so that the opening of the main path regulating valve or the bypass regulating valve needs to be reversely tracked. Specifically, the real-time opening of the main path regulating valve and the real-time opening of the bypass regulating valve can be tracked reversely according to the real-time opening data of the main path regulating valve, the association relation between the opening of the main path regulating valve and the comprehensive valve position, the real-time opening data of the bypass regulating valve and the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
In the specific implementation, according to the association relation between the opening of the main path regulating valve and the comprehensive valve position, namely the relation 1, an inverse function relation corresponding to the relation 1 can be obtained; and obtaining an inverse function relation corresponding to the relation 2 according to the relation between the opening of the bypass regulating valve and the comprehensive valve position, namely the relation 2. Then, substituting the real-time opening data of the main path regulating valve into an inverse function relation corresponding to the relation 1 to obtain a comprehensive valve position calculated by the main path regulating valve; and substituting the real-time opening data of the bypass regulating valve into an inverse function relation corresponding to the relation 2 to obtain the comprehensive valve position calculated by the bypass regulating valve. Thus, the opening of the main path regulating valve and the opening of the bypass regulating valve are tracked reversely according to the difference between the comprehensive valve position calculated by the main path regulating valve, the comprehensive valve position calculated by the bypass regulating valve and the real-time comprehensive valve position.
The embodiment of the invention also provides a turbine lubricating oil temperature adjusting device, which is described in the following embodiment. Because the principle of the device for solving the problems is similar to that of the turbine lubricating oil temperature regulating method, the implementation of the device can be referred to the implementation of the turbine lubricating oil temperature regulating method, and the repeated parts are not repeated.
As shown in fig. 5, a schematic diagram of a turbine lubricating oil temperature adjusting device according to an embodiment of the present invention may include:
the acquisition module 501 is used for acquiring real-time temperature data of turbine lubricating oil;
the flow determining module 502 is configured to determine real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value;
the comprehensive valve position determining module 503 is configured to determine a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode;
the opening determining module 504 is configured to determine opening data of the main path adjusting valve according to the real-time comprehensive valve position and a predetermined association relationship between the opening of the main path adjusting valve and the comprehensive valve position; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance;
The adjusting module 505 is configured to control the main path adjusting valve and the bypass adjusting valve to adjust the temperature of the turbine lubricating oil according to the opening data of the main path adjusting valve and the opening data of the bypass adjusting valve.
In one embodiment, the method may further include an association determination module for, before the opening determination module determines the opening data of the main path regulator valve and the bypass regulator valve:
obtaining multiple groups of test data through multiple times of turbine lubricating oil cooling water flow characteristic tests, wherein each group of test data comprises test opening data of a main path regulating valve, test opening data of a bypass regulating valve and test flow data of cooling water;
clustering a plurality of groups of test data by using a K-means clustering algorithm, and removing invalid data in the plurality of groups of test data according to a clustering result;
after invalid data in a plurality of groups of test data are removed, determining a test comprehensive valve position corresponding to each test flow data according to the test flow data of the cooling water in each group of test data;
fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the main path regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the main path regulating valve and the comprehensive valve position; and fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the bypass regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
In one embodiment, the association between the opening of the main path regulating valve and the comprehensive valve position is in the form of a first functional relation, and the first functional relation is:
f 1 (x)＝k 1 x 3 +k 2 x 2 +k 3 x+k 4
wherein k is 1 、k 2 、k 3 、k 4 4 constants each; f (f) 1 (x) The opening degree of the main path regulating valve is represented, and x represents the comprehensive valve position;
the opening determining module may specifically be configured to:
substituting the real-time comprehensive valve position into a first functional relation, and calculating to obtain opening data of the main path regulating valve.
In one embodiment, the association between the opening of the bypass regulating valve and the integrated valve position is in the form of a second functional relation, where the second functional relation is:
f 2 (x)＝b 1 x 5 +b 2 x 4 +b 3 x 3 +b 4 x 2 +b 5 x+b 6
wherein b 1 、b 2 、b 3 、b 4 、b 5 、b 6 Respectively 6 constants f 2 (x) The opening degree of the bypass regulating valve is represented, and x represents the comprehensive valve position;
the opening degree determining module may be further configured to:
substituting the real-time comprehensive valve position into a second functional relation, and calculating to obtain the opening data of the bypass regulating valve.
In one embodiment, the apparatus may further include an anomaly early warning module for:
acquiring real-time opening data of a main path regulating valve and real-time opening data of a bypass regulating valve;
and sending an abnormal early warning when the deviation between the opening data of the main path regulating valve and the real-time opening data of the main path regulating valve is larger than first preset data, the difference between the opening data of the bypass regulating valve and the real-time opening data of the bypass regulating valve is larger than second preset data, or the difference between the real-time temperature data of the turbine lubricating oil and the preset lubricating oil temperature value is larger than a preset temperature difference, so that an operator can control the main path regulating valve or the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to an abnormal early warning switching manual mode.
The embodiment of the present invention further provides a computer device, as shown in fig. 6, which is a schematic diagram of the computer device in the embodiment of the present invention, where the computer device 600 includes a memory 610, a processor 620, and a computer program 630 stored in the memory 610 and capable of running on the processor 620, and the process 620 implements the turbine lubricating oil temperature adjustment method described above when executing the computer program 630.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the turbine lubricating oil temperature adjusting method when being executed by a processor.
The embodiment of the invention also provides a computer program product, which comprises a computer program, wherein the computer program is executed by a processor to realize the turbine lubricating oil temperature regulating method.
In the embodiment of the invention, real-time temperature data of turbine lubricating oil is collected; determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value; determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode; determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance; and controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve. Compared with the technical scheme that the main path regulating valve and the bypass regulating valve cannot simultaneously and automatically regulate the temperature of lubricating oil in the prior art, the method has the advantages that through the association relation between the opening of the main path regulating valve and the comprehensive valve position (namely, the comprehensive opening data corresponding to the predicted cooling water flow in the automatic regulating mode of the main path regulating valve and the bypass regulating valve) and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, after the real-time flow data of the required cooling water are obtained, the real-time comprehensive valve position is calculated, and further, the opening data of the main path regulating valve and the opening data of the bypass regulating valve can be obtained through calculation through the association relation, the manual operation of operators is not needed, the simultaneous automatic control of the main path regulating valve and the bypass regulating valve on the temperature of the lubricating oil of the steam turbine can be realized, the temperature control effect of the lubricating oil can be improved, and the normal operation of the steam turbine is prevented from being influenced.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (13)

1. A method for regulating the temperature of a turbine lubricating oil, comprising:
collecting real-time temperature data of turbine lubricating oil;
determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value;
determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode;
determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance;
and controlling the main path regulating valve and the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to the opening data of the main path regulating valve and the opening data of the bypass regulating valve.
2. The method of claim 1, further comprising, prior to determining opening data for the main and bypass regulator valves:
obtaining multiple groups of test data through multiple times of turbine lubricating oil cooling water flow characteristic tests, wherein each group of test data comprises test opening data of a main path regulating valve, test opening data of a bypass regulating valve and test flow data of cooling water;
Clustering a plurality of groups of test data by using a K-means clustering algorithm, and removing invalid data in the plurality of groups of test data according to a clustering result;
after invalid data in a plurality of groups of test data are removed, determining a test comprehensive valve position corresponding to each test flow data according to the test flow data of the cooling water in each group of test data;
fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the main path regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the main path regulating valve and the comprehensive valve position; and fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the bypass regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
3. The method of claim 2, wherein the correlation between the opening of the main regulating valve and the integrated valve position is in the form of a first functional relation, and the first functional relation is:
f 1 (x)＝k 1 x 3 +k 2 x 2 +k 3 x+k 4
wherein k is 1 、k 2 、k 3 、k 4 4 constants each; f (f) 1 (x) The opening degree of the main path regulating valve is represented, and x represents the comprehensive valve position;
Determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, wherein the method comprises the following steps:
substituting the real-time comprehensive valve position into a first functional relation, and calculating to obtain opening data of the main path regulating valve.
4. The method of claim 2, wherein the relationship between the opening of the bypass regulator valve and the integrated valve position is in the form of a second functional equation, the second functional equation being:
f 2 (x)＝b 1 x 5 +b 2 x 4 +b 3 x 3 +b 4 x 2 +b 5 x+b 6
wherein b 1 、b 2 、b 3 、b 4 、b 5 、b 6 Respectively 6 constants f 2 (x) The opening degree of the bypass regulating valve is represented, and x represents the comprehensive valve position;
determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, wherein the method comprises the following steps:
substituting the real-time comprehensive valve position into a second functional relation, and calculating to obtain the opening data of the bypass regulating valve.
5. The method of any one of claims 1 to 4, further comprising:
acquiring real-time opening data of a main path regulating valve and real-time opening data of a bypass regulating valve;
and sending an abnormal early warning when the deviation between the opening data of the main path regulating valve and the real-time opening data of the main path regulating valve is larger than first preset data, the difference between the opening data of the bypass regulating valve and the real-time opening data of the bypass regulating valve is larger than second preset data, or the difference between the real-time temperature data of the turbine lubricating oil and the preset lubricating oil temperature value is larger than a preset temperature difference, so that an operator can control the main path regulating valve or the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to an abnormal early warning switching manual mode.
6. A turbine lube oil temperature regulation apparatus comprising:
the acquisition module is used for acquiring real-time temperature data of the turbine lubricating oil;
the flow determining module is used for determining real-time flow data of the required cooling water according to the real-time temperature data and a preset lubricating oil temperature value;
the comprehensive valve position determining module is used for determining a real-time comprehensive valve position according to the real-time flow data of the required cooling water; the real-time comprehensive valve position refers to the predicted comprehensive opening data of the regulating valve under the condition that the main path regulating valve and the bypass regulating valve are in an automatic regulating mode;
the opening determining module is used for determining opening data of the main path regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the main path regulating valve and the comprehensive valve position, which is determined in advance; determining opening data of the bypass regulating valve according to the real-time comprehensive valve position and the association relation between the opening of the bypass regulating valve and the comprehensive valve position, which is determined in advance;
and the adjusting module is used for controlling the main path adjusting valve and the bypass adjusting valve to adjust the temperature of the turbine lubricating oil according to the opening data of the main path adjusting valve and the opening data of the bypass adjusting valve.
7. The apparatus of claim 6, further comprising an association determination module for, prior to the opening determination module determining the opening data for the main and bypass regulator valves:
Obtaining multiple groups of test data through multiple times of turbine lubricating oil cooling water flow characteristic tests, wherein each group of test data comprises test opening data of a main path regulating valve, test opening data of a bypass regulating valve and test flow data of cooling water;
clustering a plurality of groups of test data by using a K-means clustering algorithm, and removing invalid data in the plurality of groups of test data according to a clustering result;
after invalid data in a plurality of groups of test data are removed, determining a test comprehensive valve position corresponding to each test flow data according to the test flow data of the cooling water in each group of test data;
fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the main path regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the main path regulating valve and the comprehensive valve position; and fitting the relation between the test comprehensive valve position corresponding to each test flow data and the test opening data of the bypass regulating valve in each set of test data by utilizing a least square algorithm to obtain the association relation between the opening of the bypass regulating valve and the comprehensive valve position.
8. The apparatus of claim 7, wherein the relationship between the opening of the main regulating valve and the integrated valve position is in the form of a first functional equation, and the first functional equation is:
f 1 (x)＝k 1 x 3 +k 2 x 2 +k 3 x+k 4
Wherein k is 1 、k 2 、k 3 、k 4 4 constants each; f (f) 1 (x) The opening degree of the main path regulating valve is represented, and x represents the comprehensive valve position;
the opening determining module is specifically configured to:
substituting the real-time comprehensive valve position into a first functional relation, and calculating to obtain opening data of the main path regulating valve.
9. The apparatus of claim 7, wherein the relationship between the opening of the bypass regulator valve and the integrated valve position is in the form of a second functional equation, the second functional equation being:
f 2 (x)＝b 1 x 5 +b 2 x 4 +b 3 x 3 +b 4 x 2 +b 5 x+b 6
wherein b 1 、b 2 、b 3 、b 4 、b 5 、b 6 Respectively 6 constants f 2 (x) The opening degree of the bypass regulating valve is represented, and x represents the comprehensive valve position;
the opening degree determining module is further used for:
substituting the real-time comprehensive valve position into a second functional relation, and calculating to obtain the opening data of the bypass regulating valve.
10. The apparatus of any one of claims 6 to 9, further comprising an anomaly early warning module to:
acquiring real-time opening data of a main path regulating valve and real-time opening data of a bypass regulating valve;
and sending an abnormal early warning when the deviation between the opening data of the main path regulating valve and the real-time opening data of the main path regulating valve is larger than first preset data, the difference between the opening data of the bypass regulating valve and the real-time opening data of the bypass regulating valve is larger than second preset data, or the difference between the real-time temperature data of the turbine lubricating oil and the preset lubricating oil temperature value is larger than a preset temperature difference, so that an operator can control the main path regulating valve or the bypass regulating valve to regulate the temperature of the turbine lubricating oil according to an abnormal early warning switching manual mode.
11. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 5 when executing the computer program.
12. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when executed by a processor, implements the method of any of claims 1 to 5.
13. A computer program product, characterized in that the computer program product comprises a computer program which, when executed by a processor, implements the method of any of claims 1 to 5.
CN202310420709.6A 2023-04-19 2023-04-19 Turbine lubricating oil temperature adjusting method and device Pending CN116446967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310420709.6A CN116446967A (en) 2023-04-19 2023-04-19 Turbine lubricating oil temperature adjusting method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310420709.6A CN116446967A (en) 2023-04-19 2023-04-19 Turbine lubricating oil temperature adjusting method and device

Publications (1)

Publication Number Publication Date
CN116446967A true CN116446967A (en) 2023-07-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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