CN113982709A - Method and device for calculating instantaneous heat supply steam extraction quantity of steam turbine and electronic equipment - Google Patents
Method and device for calculating instantaneous heat supply steam extraction quantity of steam turbine and electronic equipment Download PDFInfo
- Publication number
- CN113982709A CN113982709A CN202111311959.3A CN202111311959A CN113982709A CN 113982709 A CN113982709 A CN 113982709A CN 202111311959 A CN202111311959 A CN 202111311959A CN 113982709 A CN113982709 A CN 113982709A
- Authority
- CN
- China
- Prior art keywords
- steam
- calculating
- pressure cylinder
- extraction
- heat supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/003—Arrangements for measuring or testing
Abstract
The embodiment of the application provides a method, a device and electronic equipment for calculating the instantaneous heat supply extraction of a steam turbine, through obtaining the first through-flow part thermal parameter of the intermediate pressure cylinder of the steam turbine and the second through-flow part thermal parameter of the low pressure cylinder, utilize first through-flow part thermal parameter to calculate the steam discharge of the intermediate pressure cylinder, utilize second through-flow part thermal parameter to calculate the first steam intake of the low pressure cylinder, according to the steam discharge first steam intake calculates the instantaneous heat supply extraction of the steam turbine, can calculate the instantaneous heat supply extraction of the steam turbine under the condition of heat supply flowmeter fault, provide the reference for the operating personnel to adjust the steam turbine, improve the efficiency that the operating personnel adjusted the steam turbine.
Description
Technical Field
The application relates to the thermal field of thermal power plants, in particular to a method and a device for calculating instantaneous heat supply steam extraction quantity of a steam turbine and electronic equipment.
Background
A steam turbine is an external combustion rotary machine that can convert steam heat energy into mechanical work. After steam from a boiler enters a steam turbine, the steam passes through a series of annularly arranged nozzles and movable blades in sequence, and heat energy of the steam is converted into mechanical energy for rotating a rotor of the steam turbine.
In some scenes, the steam discharged by the intermediate pressure cylinder of the steam turbine is collected on a heat supply steam main pipe, the steam is supplied to the heat exchange station for heat supply through the heat supply steam main pipe, and the instantaneous heat supply steam extraction quantity of the steam turbine can provide reference for operators to adjust the steam turbine. At present, the instantaneous heat supply steam extraction of a steam turbine is measured by introducing a heat supply flowmeter, and under the condition of the fault of the heat supply flowmeter, the instantaneous heat supply steam extraction of the steam turbine cannot be measured, so that an operator cannot adjust the steam turbine to provide reference, and the operator can adjust the steam turbine with great blindness and lower efficiency.
Disclosure of Invention
The embodiment of the application aims to provide a method and a device for calculating the instantaneous heat supply steam extraction quantity of a steam turbine and electronic equipment, and solves the problem that the instantaneous heat supply steam extraction quantity of the steam turbine cannot be measured under the condition that a heat supply flow meter is in fault.
In order to solve the above technical problem, the embodiment of the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a method for calculating an instantaneous heat supply extraction amount of a steam turbine, including:
acquiring a first through-flow part thermal parameter of a middle pressure cylinder and a second through-flow part thermal parameter of a low pressure cylinder of a steam turbine; calculating the steam discharge amount of the intermediate pressure cylinder by using the thermal parameters of the first through-flow part; calculating a first steam inlet quantity of the low pressure cylinder by using the thermodynamic parameters of the second through-flow part; and calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity and the first steam inlet quantity.
In a second aspect, an embodiment of the present application provides a device for calculating an instantaneous heating extraction amount of a steam turbine, including:
the acquisition module is used for acquiring a first through-flow part thermal parameter of a medium pressure cylinder and a second through-flow part thermal parameter of a low pressure cylinder of the steam turbine; the first calculation module is used for calculating the steam exhaust amount of the intermediate pressure cylinder by utilizing the thermal parameters of the first through-flow part; the second calculation module is used for calculating the first steam inlet quantity of the low-pressure cylinder by utilizing the thermodynamic parameters of the second through-flow part; and the third calculation module is used for calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity and the first steam inlet quantity.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a communication interface, a memory, and a communication bus; the processor, the communication interface and the memory complete mutual communication through a bus; the memory is used for storing a computer program; the processor is configured to execute the program stored in the memory, and implement the method steps for calculating the instantaneous heat supply extraction steam volume of the steam turbine according to the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the method steps for calculating the instantaneous heating steam extraction of the steam turbine according to the first aspect.
The technical scheme that this application embodiment provided, through the first through-flow part thermal parameter of the intermediate pressure jar that obtains the steam turbine and the second through-flow part thermal parameter of low pressure jar, utilize first through-flow part thermal parameter calculates the steam extraction of intermediate pressure jar utilizes the calculation of second through-flow part thermal parameter the first steam admission of low pressure jar, according to the steam extraction first steam admission calculates the instantaneous heat supply steam extraction of steam turbine can be under the condition of heat supply flowmeter trouble, calculates the instantaneous heat supply steam extraction of steam turbine, provides the reference for operation personnel adjustment steam turbine, improves the efficiency of operation personnel adjustment steam turbine.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a first schematic flow chart of a method for calculating an instantaneous heating extraction steam volume of a steam turbine according to an embodiment of the present application;
FIG. 2 is a second schematic flow chart of a method for calculating an instantaneous heating extraction of a steam turbine according to an embodiment of the present application;
FIG. 3 is a third schematic flow chart of a method for calculating an instantaneous heating extraction of a steam turbine according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a block diagram of an apparatus for calculating an instantaneous heating extraction rate of a steam turbine according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a method and a device for calculating the instantaneous heat supply extraction steam volume of a steam turbine and electronic equipment, and solves the problem that the instantaneous heat supply extraction steam volume of the steam turbine cannot be measured under the condition that a heat supply flow meter has a fault.
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
In some scenes, the steam discharged by the intermediate pressure cylinder of the steam turbine is collected on a heat supply steam main pipe, the steam is supplied to the heat exchange station for heat supply through the heat supply steam main pipe, and the instantaneous heat supply steam extraction quantity of the steam turbine can provide reference for operators to adjust the steam turbine. At present, the instantaneous heat supply steam extraction of a steam turbine is measured by introducing a heat supply flowmeter, and under the condition of the fault of the heat supply flowmeter, the instantaneous heat supply steam extraction of the steam turbine cannot be measured, so that an operator cannot adjust the steam turbine to provide reference, and the operator can adjust the steam turbine with great blindness and lower efficiency. Even if the instantaneous heat supply extraction amount of the steam turbine is calculated by daily average calculation, the deviation between the calculated instantaneous heat supply extraction amount and the actual heat supply extraction amount is large and is not representative.
Illustratively, as shown in fig. 1, the embodiment of the present application provides a method for calculating an instantaneous heating extraction amount of a steam turbine, and an execution subject of the method may be a terminal device.
The method for calculating the instantaneous heat supply extraction steam quantity of the steam turbine specifically comprises the following steps S100-S104:
in S100, a first flow portion thermodynamic parameter of an intermediate pressure cylinder and a second flow portion thermodynamic parameter of a low pressure cylinder of a steam turbine are obtained.
Specifically, the steam turbine is composed of a rotor and a stator, wherein the rotor comprises a main shaft, an impeller, a moving blade, a coupling and the like, the stator comprises a steam inlet part, a cylinder, a partition plate, a static blade grid, a steam seal, a bearing and the like, and the cylinder comprises a medium pressure cylinder, a low pressure cylinder, a high pressure cylinder and the like. In some scenarios, the thermal parameters of the first flow portion of the intermediate pressure cylinder and the thermal parameters of the second flow portion of the low pressure cylinder may be obtained when the steam turbine is in a heat rate acceptance condition (THA condition).
The thermal parameters of the first through-flow part of the intermediate pressure cylinder of the steam turbine include, but are not limited to, instantaneous main steam flow, rated steam flow of the first stage above a steam extraction port and the like. The instantaneous main steam flow can be measured by a flow measuring device at the intermediate pressure cylinder, and the rated main steam flow and the rated steam flow at the upper stage of the steam extraction opening can be obtained by looking up from a thermodynamic characteristic book of the steam turbine. For example, under THA conditions, the rated main steam flow may be 472.35(t/h), and the rated steam extraction port upper stage steam flow may be 376.7 (t/h).
The thermodynamic parameters of the second flow passage part of the low-pressure cylinder include, but are not limited to, the absolute steam inlet pressure of the instantaneous low-pressure cylinder, the steam inlet amount of the rated low-pressure cylinder, the absolute steam inlet pressure of the rated low-pressure cylinder and the like. The instantaneous low-pressure cylinder steam inlet absolute pressure is obtained by converting the low-pressure cylinder steam inlet pressure, and the low-pressure cylinder steam inlet pressure can be measured by equipment such as a pressure gauge and the like. The rated low-pressure cylinder steam inlet quantity and the rated low-pressure cylinder absolute steam inlet pressure can also be consulted from a thermal characteristic book of the steam turbine. For example, under the THA working condition, the steam inlet quantity of the rated low-pressure cylinder can be 355.712(t/h), and the absolute steam inlet pressure of the rated low-pressure cylinder can be 0.245 (MPa).
In S101, the amount of exhaust steam of the intermediate pressure cylinder is calculated using the first through-flow portion thermodynamic parameter.
In one possible implementation, the first flow-through section thermodynamic parameters include an instantaneous main steam flow, a rated main steam flow, and a rated steam extraction port previous-stage steam flow, and S101 includes:
and calculating the ratio of the instantaneous main steam flow to the rated main steam flow, and calculating the product of the ratio and the upper-stage steam quantity of the rated steam extraction port to obtain the steam discharge quantity.
Specifically, the steam discharge amount of the intermediate pressure cylinder can be recorded as G medium, and then G medium is the instantaneous main steam flow rate/rated main steam flow rate and the primary steam flow rate above the rated steam extraction port; where "/" denotes division and "+" denotes multiplication. For example, the instantaneous main steam flow/rated steam flow/primary steam flow above the steam extraction port in G is instantaneous main steam flow/472.35/376.7.
It should be noted that the steam discharge amount of the intermediate pressure cylinder may be calculated in other manners, and the embodiment of the present application is not limited herein. For example, the amount of reheat steam minus the amount of associated reheat extraction on the intermediate pressure cylinder can be used to derive the amount of exhaust steam from the intermediate pressure cylinder.
In S102, a first steam intake amount of the low pressure cylinder is calculated using the second pass portion thermodynamic parameter.
In one possible implementation, the second pass portion thermodynamic parameters include an instantaneous low pressure cylinder steam inlet absolute pressure, a rated low pressure cylinder steam inlet amount, and a rated low pressure cylinder absolute steam inlet pressure, and S102 includes:
and calculating the product of the instantaneous low-pressure cylinder steam inlet absolute pressure and the rated low-pressure cylinder steam inlet amount, and calculating the ratio of the product to the rated low-pressure cylinder absolute steam inlet pressure to obtain a first steam inlet amount.
Specifically, the first steam inlet amount may be recorded as low, and low is the instantaneous low-pressure cylinder steam inlet absolute pressure per rated low-pressure cylinder steam inlet amount/rated low-pressure cylinder absolute steam inlet pressure; where "/" denotes division and "+" denotes multiplication. For example, graw is the instantaneous low cylinder inlet absolute pressure 355.712/0.245.
It should be noted that the first steam admission amount of the low pressure cylinder may also be calculated in other manners, and the embodiment of the present application is not limited herein. For example: the thermal characteristic book of the steam turbine can be utilized to carry out linear regression on the steam inlet quantity of the low-pressure cylinder and the steam inlet pressure of the low-pressure cylinder under each working condition, and a linear relation formula of the steam inlet quantity of the low-pressure cylinder and the steam inlet pressure of the low-pressure cylinder is obtained.
In S104, the instantaneous heat supply extraction steam quantity of the steam turbine is calculated according to the exhaust steam quantity and the first steam inlet quantity.
In one possible implementation, S104 includes: and calculating the difference value between the exhaust steam quantity and the first steam inlet quantity to obtain the instantaneous heat supply steam extraction quantity.
Specifically, after the steam discharge amount of the intermediate pressure cylinder and the first steam intake amount of the low pressure cylinder are calculated in the above manner, the instantaneous heat supply steam extraction amount is calculated according to the formula that the instantaneous heat supply steam extraction amount of the steam turbine is G medium-G low.
According to the technical scheme provided by the embodiment of the application, the thermal parameters of the first through-flow part of the intermediate pressure cylinder of the steam turbine and the thermal parameters of the second through-flow part of the low pressure cylinder are obtained, the heat discharge quantity of the intermediate pressure cylinder is calculated by using the thermal parameters of the first through-flow part, the first steam inlet quantity of the low pressure cylinder is calculated by using the thermal parameters of the second through-flow part, and the instantaneous heat supply steam extraction quantity of the steam turbine is calculated according to the heat discharge quantity and the first steam inlet quantity.
Illustratively, as shown in fig. 2, the embodiment of the present application provides a method for calculating an instantaneous heating extraction amount of a steam turbine, and an execution subject of the method may be a terminal device. The method for calculating the instantaneous heat supply extraction steam quantity of the steam turbine specifically comprises the following steps S200 to S204:
in S200, a first flow portion thermodynamic parameter of the intermediate pressure cylinder and a second flow portion thermodynamic parameter of the low pressure cylinder of the steam turbine are obtained.
In S201, the exhaust steam amount of the intermediate pressure cylinder is calculated using the first through-flow portion thermodynamic parameter.
In S202, a first steam intake amount of the low pressure cylinder is calculated using the second pass portion thermodynamic parameter.
In S203, the water adding parameter, the steam adding parameter, and the water flow rate of the heater corresponding to the intermediate pressure cylinder are obtained, and the second steam intake amount of the heater corresponding to the intermediate pressure cylinder is calculated using the water adding parameter, the steam adding parameter, and the water flow rate.
Specifically, steam is exhausted upwards from the boiler through the middle pressure cylinder and is respectively led into the middle parts of the two low pressure cylinders through the middle and low pressure communicating pipe, the steam enters from the middle parts of the low pressure cylinders and then respectively flows to the two end steam outlets to enter the lower steam exhaust device, the lower parts of the cylinders are provided with steam extraction ports, and the steam is extracted to enter the heater for heating water.
The steam adding parameters comprise but are not limited to a steam inlet steam enthalpy value and a hydrophobic enthalpy value of the heater, the water adding parameters comprise but are not limited to a water inlet enthalpy value and a water outlet enthalpy value of the heater, and the water flow refers to the flow of condensed water to the deaerator.
In one possible implementation manner, the water adding parameters include outlet water enthalpy values and inlet water enthalpy values of water adding sides of different heaters, the steam adding parameters include inlet steam enthalpy values and hydrophobic enthalpy values of steam adding sides of different heaters, and S203 includes:
aiming at a first heater in the heaters, calculating a first difference value between an inlet steam enthalpy value and a hydrophobic enthalpy value, a second difference value between an outlet water enthalpy value and an inlet water enthalpy value, and calculating a first ratio of the first difference value and the second difference value; calculating a third difference between the inlet steam enthalpy and the hydrophobic enthalpy for a second one of the heaters; calculating a second ratio of the third difference to the second difference; and calculating the product of the water flow and a fourth difference value of the first ratio and the second ratio to obtain a second steam inlet amount G plus.
Specifically, the steam turbine may have a plurality of heaters, and each of the heaters has an outlet water enthalpy value and an inlet water enthalpy value on the water addition side and an inlet steam enthalpy value and a hydrophobic enthalpy value on the steam addition side.
For example, if the first heater of the heaters is a fifth heater and the second heater is a fourth heater, the second steam admission amount G of the heaters can be calculated by the following formula:
wherein, h'51Is the steam inlet enthalpy value h 'of the steam adding side of the No. five heater'52The hydrophobic enthalpy value h of the steam adding side of the fifth heater51The enthalpy value of inlet water at the water adding side of a fifth heater h52Is the effluent enthalpy value h of the water adding side of a No. five heater'41Is the steam inlet enthalpy value h 'of the steam adding side of the No. four heater'42The hydrophobic enthalpy value h of the steam adding side of the fourth heater41The enthalpy value of inlet water at the water adding side of a fourth heater h42The enthalpy value of the outlet water at the water adding side of the heater No. four, wherein the unit of each enthalpy value can be KJ/kg, GCoagulation of waterThe flow rate t/h from the condensed water to the deaerator is shown.
The enthalpy values can be obtained by looking up a steam turbine characteristic book, the flow of the condensed water to the deaerator can be measured by the flow meter, and then the second steam inlet quantity of the heater is calculated according to the formula.
In S204, the instantaneous heat supply steam extraction amount of the steam turbine is calculated according to the steam discharge amount, the first steam inlet amount and the second steam inlet amount.
In one possible implementation, S204 includes: and calculating the sum of the first steam inlet quantity and the second steam inlet quantity, and calculating a fifth difference value of the steam discharge quantity and the sum to obtain the instantaneous heat supply steam extraction quantity of the steam turbine.
Specifically, the instantaneous heat supply extraction steam volume of the steam turbine is the difference value of the exhaust steam volume, the first steam inlet volume and the second steam inlet volume, and the instantaneous heat supply extraction steam volume of the steam turbine can be calculated by adopting the following formula:
instantaneous heat supply steam extraction amount is equal to G medium- (G low + G plus) and equal to G medium-G low-G plus.
It is to be noted that S200 to S202 have the same or similar implementations as those of S100 to S102 in the above embodiments, which may be referred to each other, and the embodiments of the present application are not described herein again.
According to the technical scheme provided by the embodiment of the application, the instantaneous heat supply extraction amount of the steam turbine is further calculated by the second steam inlet amount of the heater, so that the error between the calculated instantaneous heat supply extraction amount and the actual instantaneous heat supply extraction amount of the steam turbine can be further reduced, the accuracy of the instantaneous heat supply extraction amount is improved, more reliable reference is provided for operators to adjust the steam turbine, and the efficiency of the operators to adjust the steam turbine is further improved.
In one possible implementation, after S204, a correction to the instantaneous heating extraction is also included.
Specifically, after the instantaneous heat supply steam extraction amount is calculated, parameters are debugged and the accuracy of the instantaneous heat supply steam extraction amount is verified, specifically, under the pure condensation working condition of the steam turbine, if the heat supply steam extraction amount of a unit is not zero or has large deviation, the calculated instantaneous heat supply steam extraction amount has large deviation with the actual instantaneous heat supply steam extraction amount, and the deviation needs to be corrected.
When the calculated instantaneous heat supply steam extraction amount is determined, the calculated instantaneous heat supply steam extraction amount can be compared with the heat supply steam extraction amount measured by the heat supply flowmeter under the unit single machine heat supply working condition, and an error is determined; the average daily heat supply steam extraction quantity can also be compared with the reversely balanced heat supply steam extraction quantity of the unit to determine the error. In the correction, the absolute pressure of the steam admission to the low pressure cylinder may be corrected, that is, the pressure generated by the difference in height at the position of the gauge is taken into account in the correction of the absolute pressure. Therefore, the calculated instantaneous heat supply extraction amount is corrected, and the accuracy of the calculated instantaneous heat supply extraction amount can be improved.
Illustratively, as shown in fig. 3, the embodiment of the present application provides a method for calculating an instantaneous heating extraction amount of a steam turbine, and an execution subject of the method may be a terminal device. The method for calculating the instantaneous heat supply extraction steam quantity of the steam turbine specifically comprises the following steps S300 to S305:
in S300, a first flow portion thermodynamic parameter of the intermediate pressure cylinder and a second flow portion thermodynamic parameter of the low pressure cylinder of the steam turbine are obtained.
In S301, the exhaust steam amount of the intermediate pressure cylinder is calculated using the first through-flow portion thermodynamic parameter.
In S302, a first steam intake amount of the low pressure cylinder is calculated using the second pass portion thermodynamic parameter.
In S304, the instantaneous heat supply extraction steam quantity of the steam turbine is calculated according to the exhaust steam quantity and the first steam inlet quantity.
In S305, the instantaneous heating extraction amount is corrected.
Specifically, after the instantaneous heat supply steam extraction amount is calculated, parameters are debugged and the accuracy of the instantaneous heat supply steam extraction amount is verified, specifically, under the pure condensation working condition of the steam turbine, if the heat supply steam extraction amount of a unit is not zero or has large deviation, the calculated instantaneous heat supply steam extraction amount has large deviation with the actual instantaneous heat supply steam extraction amount, and the deviation needs to be corrected.
When the calculated instantaneous heat supply steam extraction amount is determined, the calculated instantaneous heat supply steam extraction amount can be compared with the heat supply steam extraction amount measured by the heat supply flowmeter under the unit single machine heat supply working condition, and an error is determined; the average daily heat supply steam extraction quantity can also be compared with the reversely balanced heat supply steam extraction quantity of the unit to determine the error. In the correction, the absolute pressure of the steam admission to the low pressure cylinder may be corrected, that is, the pressure generated by the difference in height at the position of the gauge is taken into account in the correction of the absolute pressure.
It is noted that S300 to S304 have the same or similar implementations as those of S100 to S104 in the above embodiments, which may be referred to each other, and are not described herein again.
Through the technical scheme disclosed by the embodiment of the application, the calculated instantaneous heat supply extraction steam volume is corrected, and the accuracy of the calculated instantaneous heat supply extraction steam volume can be improved.
On the basis of the same technical concept, the present embodiment further provides a device for calculating an instantaneous heat supply extraction steam volume of a steam turbine, fig. 4 is a schematic diagram illustrating a module composition of the device for calculating an instantaneous heat supply extraction steam volume of a steam turbine provided by the present embodiment, the device for calculating an instantaneous heat supply extraction steam volume of a steam turbine is used for executing the method for calculating an instantaneous heat supply extraction steam volume of a steam turbine described in fig. 1 to 3, as shown in fig. 4, the device 400 for calculating an instantaneous heat supply extraction steam volume of a steam turbine includes:
the acquiring module 401 is used for acquiring a first through-flow part thermodynamic parameter of a medium pressure cylinder and a second through-flow part thermodynamic parameter of a low pressure cylinder of the steam turbine; a first calculating module 402, configured to calculate an exhaust steam amount of the intermediate pressure cylinder by using the thermal parameter of the first through-flow portion; a second calculating module 403, configured to calculate a first steam intake amount of the low pressure cylinder by using the thermodynamic parameter of the second flow part; and a third calculating module 404, configured to calculate an instantaneous heat supply extraction amount of the steam turbine according to the exhaust amount and the first steam inlet amount.
According to the technical scheme provided by the embodiment of the application, the thermal parameters of the first through-flow part of the intermediate pressure cylinder of the steam turbine and the thermal parameters of the second through-flow part of the low pressure cylinder are obtained, the heat discharge quantity of the intermediate pressure cylinder is calculated by using the thermal parameters of the first through-flow part, the first steam inlet quantity of the low pressure cylinder is calculated by using the thermal parameters of the second through-flow part, and the instantaneous heat supply steam extraction quantity of the steam turbine is calculated according to the heat discharge quantity and the first steam inlet quantity.
The device for calculating the instantaneous heat supply extraction steam volume of the steam turbine provided by the embodiment of the application can realize each process in the embodiment corresponding to the method for calculating the instantaneous heat supply extraction steam volume of the steam turbine, and is not repeated here for avoiding repetition.
It should be noted that the device for calculating the instantaneous heat supply extraction amount of the steam turbine provided in the embodiment of the present application and the method for calculating the instantaneous heat supply extraction amount of the steam turbine provided in the embodiment of the present application are based on the same application concept, so that reference may be made to the implementation of the method for calculating the instantaneous heat supply extraction amount of the steam turbine in the specific implementation of the embodiment, and repeated details are not repeated.
Based on the same technical concept, the embodiment of the present application further provides an electronic device, which is used for executing the method for calculating the instantaneous heat supply extraction amount of the steam turbine, and fig. 5 is a schematic structural diagram of an electronic device for implementing the embodiments of the present application, as shown in fig. 5. Electronic devices may vary widely in configuration or performance and may include one or more processors 501 and memory 502, where the memory 502 may have one or more stored applications or data stored therein. Memory 502 may be, among other things, transient or persistent storage. The application program stored in memory 502 may include one or more modules (not shown), each of which may include a series of computer-executable instructions for the electronic device.
Still further, the processor 501 may be arranged in communication with the memory 502 to execute a series of computer-executable instructions in the memory 502 on the electronic device. The electronic device may also include one or more power supplies 503, one or more wired or wireless network interfaces 504, one or more input-output interfaces 505, one or more keyboards 506.
Specifically, in this embodiment, the electronic device includes a processor, a communication interface, a memory, and a communication bus; the processor, the communication interface and the memory complete mutual communication through a bus; a memory for storing a computer program; a processor for executing the program stored in the memory, implementing the following method steps:
acquiring a first through-flow part thermal parameter of a middle pressure cylinder and a second through-flow part thermal parameter of a low pressure cylinder of a steam turbine; calculating the steam discharge amount of the intermediate pressure cylinder by using the thermal parameters of the first through-flow part; calculating a first steam inlet quantity of the low pressure cylinder by using the thermodynamic parameters of the second through-flow part; and calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity and the first steam inlet quantity.
According to the technical scheme provided by the embodiment of the application, the instantaneous heat supply steam extraction quantity of the steam turbine can be calculated under the condition that the heat supply flow meter is in fault, reference is provided for operators to adjust the steam turbine, and the efficiency of the operators to adjust the steam turbine is improved.
The embodiment also provides a computer-readable storage medium, in which a computer program is stored, and when executed by a processor, the computer program implements the following steps:
acquiring a first through-flow part thermal parameter of a middle pressure cylinder and a second through-flow part thermal parameter of a low pressure cylinder of a steam turbine; calculating the steam discharge amount of the intermediate pressure cylinder by using the thermal parameters of the first through-flow part; calculating a first steam inlet quantity of the low pressure cylinder by using the thermodynamic parameters of the second through-flow part; and calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity and the first steam inlet quantity.
According to the technical scheme provided by the embodiment of the application, the instantaneous heat supply steam extraction quantity of the steam turbine can be calculated under the condition that the heat supply flow meter is in fault, reference is provided for operators to adjust the steam turbine, and the efficiency of the operators to adjust the steam turbine is improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.
In a typical configuration, an electronic device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include transitory computer readable media (transmyedia) such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, apparatus or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for calculating the instantaneous heat supply extraction steam quantity of a steam turbine is characterized by comprising the following steps:
acquiring a first through-flow part thermal parameter of a middle pressure cylinder and a second through-flow part thermal parameter of a low pressure cylinder of a steam turbine;
calculating the steam discharge amount of the intermediate pressure cylinder by using the thermal parameters of the first through-flow part;
calculating a first steam inlet quantity of the low pressure cylinder by using the thermodynamic parameters of the second through-flow part;
and calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity and the first steam inlet quantity.
2. The method of claim 1, wherein the first through-flow section thermodynamic parameters include an instantaneous main steam flow, a rated main steam flow, and a rated steam extraction port upgrad steam volume, and wherein calculating the steam extraction volume of the intermediate pressure cylinder using the first through-flow section thermodynamic parameters comprises:
calculating a ratio of the instantaneous main steam flow to the rated main steam flow;
and calculating the product of the ratio and the upper-stage steam quantity of the rated steam extraction port to obtain the steam exhaust quantity.
3. The method of claim 1, wherein the second flow through portion thermodynamic parameters include instantaneous low pressure cylinder steam admission absolute pressure, nominal low pressure cylinder steam admission, and nominal low pressure cylinder steam admission absolute pressure, and wherein calculating the first steam admission to the low pressure cylinder using the second flow through portion thermodynamic parameters comprises:
calculating the product of the instantaneous low-pressure cylinder steam inlet absolute pressure and the rated low-pressure cylinder steam inlet quantity;
and calculating the ratio of the product to the absolute steam admission pressure of the rated low-pressure cylinder to obtain the first steam admission amount.
4. The method according to any one of claims 1 to 3, wherein calculating the instantaneous heating extraction of the steam turbine based on the extraction and the first inlet comprises:
and calculating the difference value between the steam exhaust amount and the first steam inlet amount to obtain the instantaneous heat supply steam extraction amount.
5. The method of claim 1, wherein after said calculating a first amount of steam admission to said low pressure cylinder using said second flow section thermodynamic parameter, said method further comprises:
acquiring water adding parameters, steam adding parameters and water flow of a heater corresponding to the intermediate pressure cylinder;
calculating a second steam inlet quantity of the heater corresponding to the intermediate pressure cylinder by using the water adding parameter, the steam adding parameter and the water flow;
the calculating the instantaneous heat supply extraction steam quantity of the steam turbine according to the exhaust steam quantity and the first steam inlet quantity comprises the following steps:
and calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity, the first steam inlet quantity and the second steam inlet quantity.
6. The method of claim 5, wherein the water feeding parameters comprise water outlet enthalpy values and water inlet enthalpy values of water feeding sides of different heaters, the steam feeding parameters comprise steam inlet enthalpy values and hydrophobic enthalpy values of steam feeding sides of different heaters, and the calculating a second steam inlet amount of a heater corresponding to the intermediate pressure cylinder by using the water feeding parameters, the steam feeding parameters and the water flow rate comprises:
for a first one of the heaters, calculating a first difference between the inlet steam enthalpy and the hydrophobic enthalpy, a second difference between the outlet water enthalpy and the inlet water enthalpy, and a first ratio of the first difference to the second difference;
calculating a third difference between the inlet steam enthalpy and the hydrophobic enthalpy for a second one of the heaters;
calculating a second ratio of the third difference to the second difference;
and calculating the product of the water flow and a fourth difference value of the first ratio and the second ratio to obtain the second steam inlet quantity.
7. The method of claim 5 or 6, wherein calculating the instantaneous heating extraction of the turbine from the exhaust, the first inlet, and the second inlet comprises:
calculating a sum of the first steam admission amount and the second steam admission amount;
and calculating a fifth difference value between the exhaust steam quantity and the sum value to obtain the instantaneous heat supply extraction steam quantity of the steam turbine.
8. The method of claim 5, wherein after said calculating an instantaneous heating extraction for the turbine based on the amount of exhaust steam, the first amount of intake steam, and the second amount of intake steam, the method further comprises:
and correcting the instantaneous heat supply steam extraction quantity.
9. An apparatus for calculating an instantaneous heat extraction capacity of a steam turbine, the apparatus comprising:
the acquisition module is used for acquiring a first through-flow part thermal parameter of a medium pressure cylinder and a second through-flow part thermal parameter of a low pressure cylinder of the steam turbine;
the first calculation module is used for calculating the steam exhaust amount of the intermediate pressure cylinder by utilizing the thermal parameters of the first through-flow part;
the second calculation module is used for calculating the first steam inlet quantity of the low-pressure cylinder by utilizing the thermodynamic parameters of the second through-flow part;
and the third calculation module is used for calculating the instantaneous heat supply steam extraction quantity of the steam turbine according to the steam discharge quantity and the first steam inlet quantity.
10. An electronic device comprising a processor, a communication interface, a memory, and a communication bus; the processor, the communication interface and the memory complete mutual communication through a bus; the memory is used for storing a computer program; the processor is used for executing the program stored in the memory to realize the steps of the method for calculating the instantaneous heat supply extraction steam volume of the steam turbine according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311959.3A CN113982709B (en) | 2021-11-08 | 2021-11-08 | Method and device for calculating instantaneous heat supply steam extraction amount of steam turbine and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311959.3A CN113982709B (en) | 2021-11-08 | 2021-11-08 | Method and device for calculating instantaneous heat supply steam extraction amount of steam turbine and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113982709A true CN113982709A (en) | 2022-01-28 |
| CN113982709B CN113982709B (en) | 2023-08-01 |
Family
ID=79747033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111311959.3A Active CN113982709B (en) | 2021-11-08 | 2021-11-08 | Method and device for calculating instantaneous heat supply steam extraction amount of steam turbine and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113982709B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691585A (en) * | 2018-05-09 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of computational methods of condensing turbine low pressure (LP) cylinder efficiency |
| CN111706411A (en) * | 2020-07-22 | 2020-09-25 | 西安西热节能技术有限公司 | Thermodynamic system for transforming back pressure unit into extraction condensing unit and working method |
| CN112127958A (en) * | 2020-08-28 | 2020-12-25 | 中核核电运行管理有限公司 | Device and method for determining steam extraction parameters of nuclear turbine |
| KR20210034868A (en) * | 2019-09-23 | 2021-03-31 | 한국전력공사 | Method for calculating main steam flow in turbin performance test and turbin performance test device using the same |
-
2021
- 2021-11-08 CN CN202111311959.3A patent/CN113982709B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691585A (en) * | 2018-05-09 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of computational methods of condensing turbine low pressure (LP) cylinder efficiency |
| KR20210034868A (en) * | 2019-09-23 | 2021-03-31 | 한국전력공사 | Method for calculating main steam flow in turbin performance test and turbin performance test device using the same |
| CN111706411A (en) * | 2020-07-22 | 2020-09-25 | 西安西热节能技术有限公司 | Thermodynamic system for transforming back pressure unit into extraction condensing unit and working method |
| CN112127958A (en) * | 2020-08-28 | 2020-12-25 | 中核核电运行管理有限公司 | Device and method for determining steam extraction parameters of nuclear turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113982709B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111092441B (en) | Method and system for controlling regional load frequency of pumped storage power station | |
| SE1950856A1 (en) | Method and controller for dynamically determining a system curve in a heat power system | |
| CN108691585B (en) | Method for calculating low pressure cylinder efficiency of condensing steam turbine | |
| CN104088771A (en) | Accurate determination method of optimal water pump unit combination operation scheme of circulation cooling water system of power plant | |
| CN211454603U (en) | Low-pressure cylinder efficiency measuring and calculating system | |
| CN113982709A (en) | Method and device for calculating instantaneous heat supply steam extraction quantity of steam turbine and electronic equipment | |
| EP2666978B1 (en) | Steam Rankine plant | |
| CN110657585B (en) | Thermal efficiency correction method for deviation of inlet water temperature of gas condensation boiler from design value | |
| CN110056849B (en) | Water supply method for waste heat recovery boiler and waste heat recovery boiler | |
| CN103954380B (en) | A kind of assay method of Turbo-generator Set exhaust enthalpy | |
| CN112364525B (en) | Automatic generation method and system for steam turbine heat consumption calculation program | |
| CN113065745B (en) | Method, device and terminal for determining minimum peak regulation output of double-extraction heat supply unit | |
| CN103197246B (en) | A kind ofly determine the on-the-spot measuring method of turbine exhaust steam in electric power plant pressure to unit generation power influences | |
| Yamaguchi | Variety of steam turbines in Svartsengi and Reykjanes geothermal power plants | |
| US9234442B2 (en) | Steam turbine system and control system therefor | |
| CN104101490B (en) | Steam turbine flow steam sealing transformation effect determining method | |
| Yasni et al. | Off-design exergy audit of a thermal power station | |
| CN114548844B (en) | Offshore oil and gas field power grid wind power bearing capacity evaluation method considering electrical coupling constraint | |
| Huzarek et al. | Static model of steam/water cycle for thermal and economic analysis | |
| JP3658478B2 (en) | Condenser equipment | |
| CN112880761B (en) | Method and system for measuring circulating water flow | |
| CN116611220A (en) | Method, device, equipment and medium for calculating power and heat consumption rate of steam turbine generator unit | |
| US20220350947A1 (en) | Linearization Processing Method and Device for Nonlinear Model, And Storage Medium | |
| JPH05272306A (en) | Exhaust heat utilizing power generation control device | |
| CN117033865A (en) | Steam turbine exhaust enthalpy calculation method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |