CN114674585B - Heat supply capacity measuring method, device and system - Google Patents
Heat supply capacity measuring method, device and system Download PDFInfo
- Publication number
- CN114674585B CN114674585B CN202210288435.5A CN202210288435A CN114674585B CN 114674585 B CN114674585 B CN 114674585B CN 202210288435 A CN202210288435 A CN 202210288435A CN 114674585 B CN114674585 B CN 114674585B
- Authority
- CN
- China
- Prior art keywords
- data
- heat supply
- pipe
- condensate
- supply network
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000004364 calculation method Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 192
- 238000000605 extraction Methods 0.000 claims description 104
- 238000002156 mixing Methods 0.000 claims description 76
- 238000009833 condensation Methods 0.000 claims description 30
- 230000005494 condensation Effects 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 28
- 238000000691 measurement method Methods 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 6
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a heat supply capacity measuring method, a device and a system, which are used for acquiring relevant temperature and pressure data and condensate pipe drain pump data; calculating relevant enthalpy data according to the relevant temperature and pressure data; determining condensate pipe flow data according to the condensate pipe drain pump data and related temperature and pressure data; determining heat supply network hydrophobic flow data according to the related enthalpy data and the condensate pipe flow data; and determining heat supply power data of the heat supply network according to the related enthalpy data and the heat supply network hydrophobic flow data. The invention recognizes that when the pressure of the heat supply network drain pipe suddenly changes, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, and accurate heat supply network water delivery flow data cannot be obtained.
Description
Technical Field
The invention relates to the field of heat supply of thermal power plants, in particular to a heat supply capacity measuring method, device and system.
Background
The resident heat supply is taken as civil engineering, and the heat supply task is mainly born by a thermal power plant. The combined heat and power production of thermal power plant is to use the high-level heat energy generated by fuel chemical energy to produce electric energy first, then to do work and to supply heat to the outside. The heat load includes a process heat load, a heating heat load and a hot water load, and the heating heat load is required for heating residents.
Large thermal power plants typically introduce a portion of the medium pressure cylinder exhaust steam (i.e., heating extraction steam) into the grid heater. Heating and extracting steam releases heat to circulating water in a heat supply network heater, and steam is condensed into water and then is pumped into a low-pressure heat recovery system in a steam turbine thermodynamic system through a heat supply network drainage pump; the heat supply network circulating water absorbs heat in the heat supply network heater, high-temperature circulating water is generated to supply heat to a heat user, and the heat supply network water after heat supply is returned into the heat supply network heater through the heat supply network circulating water pump.
The heating extraction steam is condensed into water after the heat supply network heater releases heat, the condensed water is the drainage of the heat supply network heater, and the saturation pressure and the saturation temperature are in positive corresponding relation under the state that the drainage is close to saturation. Because the power generation load and the heating load are in a strong coupling relation, the heating load or the power generation load is adjusted, the heating extraction flow and the pressure can be greatly and frequently fluctuated due to improper adjustment, when the steam side pressure of the heating network heater is suddenly reduced, the corresponding saturation temperature is correspondingly reduced, the drainage temperature is higher than the saturation temperature, drainage can be vaporized and steam bubbles are generated, a steam-water two-phase flow is presented, the drainage flow measurement is inaccurate, the inaccurate measurement of the drainage flow of the heating network is a common phenomenon in actual operation, and the inaccurate calculation of the heating capacity of the heating network heater is caused.
Therefore, how to accurately measure the heating capacity of the heating network heater becomes a problem to be solved in the prior art.
Disclosure of Invention
The invention aims to provide a heat supply capacity measuring method, device and system, which are used for solving the problem that the heat supply capacity measurement of a heat supply network heater in the prior art is inaccurate.
In order to solve the above technical problems, the present invention provides a method for measuring heating capacity, including:
collecting heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, pre-mixing condensation pipe temperature data, post-mixing condensation pipe temperature data, condensation pipe pressure data and condensation pipe drainage pump data;
determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data;
Determining condensate flow data according to the condensate drain pump data, the mixed condensate temperature data and the condensate pressure data;
determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data;
and determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network.
Optionally, in the heat supply capacity measurement method, the determining the heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the pre-mixed condensate pipe enthalpy data and the condensate pipe flow data includes:
determining the water delivery flow m of the heat supply network by the following method 1 ；
H is enthalpy data of the mixed condensate pipe; h is a 1 Hydrophobic enthalpy data for the heat supply network; h is a 2 Enthalpy data for the pre-mix condensate; and m is the condensate pipe flow data.
Optionally, in the heat supply capacity measurement method, the determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the heat supply network drainage enthalpy data and the heat supply network drainage flow data includes:
Determining the heating power data w of the heating network through the following steps;
wherein h is c And enthalpy data of the heating steam extraction pipe.
A heating capacity measurement device, comprising:
the collecting module is used for collecting heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, condensation pipe temperature data before mixing, condensation pipe temperature data after mixing, condensation pipe pressure data and condensation pipe drainage pump data;
the enthalpy calculation module is used for determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data;
the condensate pipe flow module is used for determining condensate pipe flow data according to the condensate pipe drain pump data, the mixed condensate pipe temperature data and the condensate pipe pressure data;
the water pipe flow module is used for determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data;
And the heat supply evaluation module is used for determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the heat supply network drainage enthalpy data and the heat supply network drainage flow data.
A heating capacity measurement apparatus comprising:
a memory for storing a computer program;
a processor for implementing the steps of the heating capacity measurement method as described in any one of the above when executing the computer program.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of a heating capacity measurement method as described in any one of the above.
A heat supply capacity measurement system comprises a steam turbine, a heating steam extraction pipe, a heating network heater, a heating network drain pipe, a mixing pipe, a condensation water pipe, a data acquisition component and a data processor;
the steam turbine supplies steam for the heat supply network heater through the heating steam extraction pipe, and drainage of the heat supply network heater is converged into the condensate pipe through the heat supply network drainage pipe and the mixing pipe in sequence;
the condensate pipe comprises a condensate drain pump, and the condensate drain pump is used for pressurizing the drained condensate pipe water mixed with the heating network heater;
The data acquisition component comprises a heating steam extraction pipe pressure sensor and a heating steam extraction pipe temperature sensor which are arranged on the heating steam extraction pipe; a heat supply network drain pipe pressure sensor and a heat supply network drain pipe temperature sensor which are arranged on the heat supply network drain pipe; the pre-mixing condensate pipe temperature sensor is arranged on the condensate pipe and is positioned at the upstream of the mixing pipe; the mixed condensate pipe temperature sensor and the condensate pipe pressure sensor are arranged on the condensate pipe and positioned at the downstream of the mixing pipe;
the data processor is in signal connection with the data acquisition component and the condensate and drain pump, and is used for determining heat supply power data of the heat supply network through the heat supply capacity measuring method.
Optionally, in the heating capacity measurement system, the mixing pipe is disposed between two adjacent low-pressure heaters on the condensate pipe.
Optionally, in the heating capacity measurement system, the mixed condensate pipe temperature sensor is arranged between the mixing pipe and a water inlet of a downstream low-pressure heater;
the data acquisition assembly further comprises a condensate pipe flow temperature sensor, and the condensate pipe flow temperature sensor is arranged at the downstream of the water outlet of the downstream low-pressure heater;
And the data processor determines the flow data of the condensate pipe through the flow temperature data sent by the flow temperature sensor of the condensate pipe, the drain pump data of the condensate pipe and the pressure data of the condensate pipe.
Optionally, in the heating capacity measurement system, the condensate flow temperature sensor is disposed downstream of the condensate pressure sensor.
According to the heat supply capacity measuring method provided by the invention, the drainage pressure data of the heat supply network, the drainage temperature data of the heat supply network, the temperature data of the heating steam extraction pipe, the pressure data of the heating steam extraction pipe, the temperature data of the condensate pipe before mixing, the temperature data of the condensate pipe after mixing, the pressure data of the condensate pipe and the drainage pump data of the condensate pipe are collected; determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data; determining condensate flow data according to the condensate drain pump data, the mixed condensate temperature data and the condensate pressure data; determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data; and determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network.
The invention recognizes that the main reason of inaccurate measurement of the heating capacity of a heating network heater is that when the pressure of a heating network hydrophobic pipe suddenly changes, the temperature is not changed to increase bubbles in the pipe, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, accurate heating network water delivery flow data cannot be obtained, and the accurate heating network heating power data cannot be calculated. The invention also provides a heat supply capacity measuring device and a heat supply capacity measuring system with the beneficial effects.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a specific embodiment of a heat capacity measurement method according to the present invention;
FIG. 2 is a schematic structural diagram of a heat capacity measuring device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a heat capacity measuring system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another embodiment of the heat supply capacity measurement system provided by the present invention.
Detailed Description
The heat supply network heater is one of main auxiliary equipment of a heat supply network system, and has the main function of heating circulating water in a hot water supply system by utilizing steam extraction of a steam turbine or steam (heating medium) led from a boiler so as to meet the requirement of a heat supply user.
The running state of the heating network heater is good or bad, and the heating quality of residents is related, so that it is very necessary to master the performance indexes of the heating network heater, such as heating capacity, steam side flow, water side flow, heat transfer coefficient, temperature rise, end difference and the like, and particularly, the heating capacity is very important. The heat supply capacity of the unit is directly related to the heating steam extraction flow, the premise of calculating the heat supply capacity is to accurately acquire the heating steam extraction flow, and meanwhile, monitoring the heating steam extraction flow is also crucial to the operation adjustment of the steam turbine.
The pipe diameters of the steam side and the water side of the heating network heater of the large-scale thermal power plant are larger, for example, the pipe diameter of a heating steam extraction pipe of a 200MW unit is more than phi 800, and for such a large pipe diameter, the steam flow of the large-scale thermal power plant cannot be measured by the existing measuring technology.
The general acquisition method of heating steam extraction flow is that a throttle orifice plate is additionally arranged on a drainage pipeline of a heating network heater, the differential pressure value is measured, and the relation between flow and differential pressure is deduced according to Bernoulli equation and flow continuity equation, so that the steam extraction flow value is obtained, and the value is the heating steam extraction flow.
The current situation is that the existing measurement technology cannot obtain the heating extraction flow from the steam side of the heating network heater, is influenced by the limitation and operation of the field installation condition, and cannot accurately obtain the heating extraction flow from the drainage side. Because the acquired heating steam extraction flow is inaccurate, the accuracy of heat supply capacity calculation is affected; when the generating set generates electricity or the heating load is adjusted, the operation quantity and the operation difficulty of operators are increased.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The core of the present invention is to provide a heat supply capacity measuring method, a flow diagram of one specific embodiment thereof is shown in fig. 1, which is called as a specific embodiment one, including:
s101: collecting heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, pre-mixing condensation pipe temperature data, post-mixing condensation pipe temperature data, condensation pipe pressure data and condensation pipe drainage pump data.
The pressure in the condenser tube is basically free from inconsistent conditions, so that the pressure data before and after mixing are not respectively taken for the measurement of the pressure of the condenser tube, and of course, the two pressure values before and after mixing can be taken according to actual conditions, and the invention is not limited in this regard.
S102: determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; and determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data.
It should be noted that, the enthalpy data in this step may be calculated at one time, or may be decomposed into a plurality of steps to be calculated separately, which is not limited herein. Enthalpy data in the present invention may be obtained by referring to an IFC97 lookup table (or other version of the lookup table), or calculated by an IFC formula, but may be obtained by other methods, and the present application is not limited thereto.
S103: and determining condensate pipe flow data according to the condensate pipe drain pump data, the mixed condensate pipe temperature data and the condensate pipe pressure data.
The condensate flow data in this step may be obtained by calculation in a national standard, for example, by calculation using formula (1):
wherein C is the outflow coefficient, K m Vp is the pressure difference (obtained by the drain pump data of the condensate pipe) and ρ is the medium density in the pipeline (obtained by the temperature data of the condensate pipe and the pressure data of the condensate pipe after mixing);
further, the K m Calculated by the formula (2) (3):
d is the diameter of a small hole on a pore plate of the condensate drain pump corresponding to the condensate drain data, D is the diameter of a condensate pipe pipeline, and beta is the diameter ratio of the small hole on the pore plate to the diameter of the pipeline.
S104: and determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data.
Specifically, the step determines the heat supply network water delivery flow m through the following formula (4) 1 ；
H is enthalpy data of the mixed condensate pipe; h is a 1 Hydrophobic enthalpy data for the heat supply network; h is a 2 Enthalpy data for the pre-mix condensate; and m is the condensate pipe flow data.
In the step, a matrix equation (5) is obtained through a mass balance equation and a heat balance equation in a combined way, and the heat supply network water delivery flow is calculated according to the data change in the condensate pipes before and after the mixing pipe;
wherein m is 2 The flow data of the mixed condensate pipe can be measured or calculated by an instrument.
The formula (4) in the preferred embodiment can be obtained by combining the formulas (1) and (5), and of course, the heat supply network water flow rate can be calculated by other methods, and the present invention is not limited thereto.
S105: and determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network.
As a preferred embodiment, the heating power data w of the heating network is determined by the following formula (6);
Wherein h is c And enthalpy data of the heating steam extraction pipe.
The unit of heat supply power data of the heat supply network is megawatt, which reflects the external heat supply capacity of the heat supply network heater, in other words, the heat absorption quantity of the heat supply network circulating water in the heat supply network heater is quantized; compared with the prior art that only grass is used for simply evaluating the heat provided by heat sources such as electric heating plants and the like to the heat exchanger of the heat supply network, the method can directly quantify the heat received by a user, and the result is more accurate and representative.
By adopting the preferred embodiment, each algorithm in the whole flow has definite physical meaning, less original input data, high operation speed and high calculation precision, solves the problem that the flow of the heat supply network drain pipe cannot be accurately measured, and has higher practical value.
According to the heat supply capacity measuring method provided by the invention, the drainage pressure data of the heat supply network, the drainage temperature data of the heat supply network, the temperature data of the heating steam extraction pipe, the pressure data of the heating steam extraction pipe, the temperature data of the condensate pipe before mixing, the temperature data of the condensate pipe after mixing, the pressure data of the condensate pipe and the drainage pump data of the condensate pipe are collected; determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data; determining condensate flow data according to the condensate drain pump data, the mixed condensate temperature data and the condensate pressure data; determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data; and determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network. The invention recognizes that the main reason of inaccurate measurement of the heating capacity of a heating network heater is that when the pressure of a heating network hydrophobic pipe suddenly changes, the temperature is not changed to increase bubbles in the pipe, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, accurate heating network water delivery flow data cannot be obtained, and the accurate heating network heating power data cannot be calculated.
The heat supply capacity measuring device provided by the embodiment of the invention is introduced below, and the heat supply capacity measuring device described below and the heat supply capacity measuring method described above can be referred to correspondingly.
Fig. 2 is a block diagram of a heat supply capacity measuring apparatus according to an embodiment of the present invention, which is referred to as a second embodiment, and referring to fig. 2, the heat supply capacity measuring apparatus may include:
the collecting module 100 is used for collecting heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, pre-mixing condensate pipe temperature data, post-mixing condensate pipe temperature data, condensate pipe pressure data and condensate pipe drainage pump data;
the enthalpy calculation module 200 is configured to determine heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data;
The condensate flow module 300 is configured to determine condensate flow data according to the condensate drain pump data, the mixed condensate temperature data, and the condensate pressure data;
the water pipe flow module 400 is configured to determine heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data;
and the heat supply evaluation module 500 is configured to determine heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the heat supply network drainage enthalpy data and the heat supply network drainage flow data.
As a preferred embodiment, the water pipe flow module 400 includes:
the flow calculation unit is used for determining the water delivery flow m of the heat supply network through the following steps of 1 ；
H is enthalpy data of the mixed condensate pipe; h is a 1 Hydrophobic enthalpy data for the heat supply network; h is a 2 Enthalpy data for the pre-mix condensate; and m is the condensate pipe flow data.
As a preferred embodiment, the heating evaluation module 500 includes:
a heat supply calculation unit for determining the heat supply power data w of the heat supply network by the following formula;
wherein h is c And enthalpy data of the heating steam extraction pipe.
The heat supply capacity measuring device of the present embodiment is used to implement the foregoing heat supply capacity measuring method, so that the detailed description of the heat supply capacity measuring device can be found in the foregoing example portions of the heat supply capacity measuring method, for example, the collecting module 100, the enthalpy calculating module 200, the condensate pipe flow module 300, the water pipe flow module 400, and the heat supply evaluating module 500, which are respectively used to implement steps S101, S102, S103, S104, and S105 in the foregoing heat supply capacity measuring method, so that the detailed description of the embodiments of the respective portions will not be repeated herein.
The heat supply capacity measuring device provided by the invention is used for acquiring heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, pre-mixing condensation pipe temperature data, post-mixing condensation pipe temperature data, condensation pipe pressure data and condensation pipe drainage pump data through the acquisition module 100; the enthalpy calculation module 200 is configured to determine heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data; the condensate flow module 300 is configured to determine condensate flow data according to the condensate drain pump data, the mixed condensate temperature data, and the condensate pressure data; the water pipe flow module 400 is configured to determine heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data; and the heat supply evaluation module 500 is configured to determine heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the heat supply network drainage enthalpy data and the heat supply network drainage flow data. The invention recognizes that the main reason of inaccurate measurement of the heating capacity of a heating network heater is that when the pressure of a heating network hydrophobic pipe suddenly changes, the temperature is not changed to increase bubbles in the pipe, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, accurate heating network water delivery flow data cannot be obtained, and the accurate heating network heating power data cannot be calculated.
The invention also provides a heat supply capacity measuring system, a structural schematic diagram of one specific embodiment of which is shown in fig. 3, which is called as a specific embodiment III and comprises a steam turbine 01, a heating steam extraction pipe 02, a heating network heater 03, a heating network drain pipe 04, a mixing pipe 07, a condensate pipe 05, a data acquisition component and a data processor;
the steam turbine 01 supplies steam to the heat supply network heater 03 through the heating steam extraction pipe 02, and the drain water of the heat supply network heater 03 sequentially passes through the heat supply network drain pipe 04 and the mixing pipe 07 to be converged into the condensate pipe 05;
the condensate pipe 05 comprises a condensate drain pump 09, and the condensate drain pump 09 is used for pressurizing the water of the condensate pipe 05 after the water is drained and mixed with the heating network heater 03;
the data acquisition component comprises a heating steam extraction pipe pressure sensor 17 and a heating steam extraction pipe temperature sensor 18 which are arranged on the heating steam extraction pipe 02; a heat supply network drain pipe pressure sensor 10 and a heat supply network drain pipe temperature sensor 11 which are arranged on the heat supply network drain pipe 04; a pre-mixing condensate pipe temperature sensor 12 provided in the condensate pipe 05 and upstream of the mixing pipe 07; a mixed condensate pipe temperature sensor 13 and a condensate pipe pressure sensor 16 provided in the condensate pipe 05 and downstream of the mixing pipe 07;
The data processor is in signal connection with the data acquisition component and the condensate and drain pump 09, and is used for determining heat supply power data of the heat supply network through the heat supply capacity measuring method according to any one of the above.
The heat supply capacity measurement system in this embodiment corresponds to the heat supply capacity measurement method described above, and reference is made to the above for specific technical details, which are not repeated here.
The data collected by each collecting component in this embodiment corresponds to each data in the foregoing heat supply capacity measuring method, for example, the heating steam extraction pipe pressure sensor 17 corresponds to the foregoing heating steam extraction pipe 02 pressure data, and the heating steam extraction pipe temperature sensor 18 corresponds to the foregoing heating steam extraction pipe 02 temperature data, which are not described in detail herein.
It should be noted that the condensate and water drain pump 09 is provided with the differential pressure sensor 15, and corresponding differential pressure data can be obtained for related calculation.
As a specific embodiment, the mixing pipe 07 is disposed between two adjacent low-pressure heaters on the condensate pipe 05, referring to fig. 4, since the output pressure of the heat supply network drain pipe 04 is similar to the pressure in the condensate pipe 05 between the low-pressure heaters in a general thermal power plant, the installation and erection costs can be greatly reduced by directly connecting the mixing pipe 07 between the two low-pressure heaters, and no additional pressure isolation device is required, thereby reducing the construction costs. Further, the two low-pressure heaters are respectively a third low-pressure heater and a fourth low-pressure heater.
As a preferred embodiment, the mixed condensate pipe temperature sensor 13 is arranged between the mixing pipe 07 and the water inlet of the downstream low-pressure heater 08;
the data acquisition assembly further comprises a condenser tube flow rate temperature sensor 14, wherein the condenser tube flow rate temperature sensor 14 is arranged at the downstream of the water outlet of the downstream low-pressure heater 08;
the data processor determines the condensate flow data through the flow temperature data sent by the condensate flow temperature sensor 14, the condensate drain pump data and the condensate pressure data.
The downstream low-pressure heater 08 refers to a low-pressure heater located downstream (the upstream and downstream of the present invention refer to the upstream and downstream of the water flow direction in the corresponding pipeline, that is, the direction of the incoming water is upstream, and the direction of the water flow is downstream), that is, one of the two low-pressure heaters, which receives the condensed water mixed by the heat supply network hydrophobic pipe 04, and the other low-pressure heater, which receives the condensed water 05 not mixed by the mixing pipe 07, is referred to as an upstream low-pressure heater 06.
In the preferred embodiment, the condensation water pipe flow temperature sensor 14 is additionally provided, because the water temperature in the condensation water pipe 05 is greatly changed before and after passing through the low-pressure heaters, and the condensation water pipe flow temperature sensor 14 corresponds to water flow passing through two low-pressure heaters, so that stable and representative water temperature data can be obtained, so that the calculation accuracy of the condensation water pipe flow data is improved, and the accuracy of the finally obtained heat supply power data of the heat supply network is further improved.
Still further, the condenser flow rate temperature sensor 14 is disposed at the downstream of the condenser pressure sensor 16, and since the temperature sensor currently used for fluid measurement generates heat during operation, if the condenser flow rate temperature sensor 14 is disposed at the upstream of the condenser pressure sensor 16, the temperature of the water body will rise due to external factors, so that the pressure reading is in error, and therefore, the present application sets the condenser flow rate temperature sensor 14 at the downstream of the condenser pressure sensor 16, thereby avoiding the interference of temperature measurement to pressure measurement and further improving the measurement accuracy.
The invention provides a heat supply capacity measurement system, which comprises a steam turbine 01, a heating steam extraction pipe 02, a heat supply network heater 03, a heat supply network drain pipe 04, a mixing pipe 07, a condensate pipe 05, a data acquisition component and a data processor; the steam turbine 01 supplies steam to the heat supply network heater 03 through the heating steam extraction pipe 02, and the drain water of the heat supply network heater 03 sequentially passes through the heat supply network drain pipe 04 and the mixing pipe 07 to be converged into the condensate pipe 05; the condensate pipe 05 comprises a condensate drain pump 09, and the condensate drain pump 09 is used for pressurizing the water of the condensate pipe 05 after the water is drained and mixed with the heating network heater 03; the data acquisition component comprises a heating steam extraction pipe pressure sensor 17 and a heating steam extraction pipe temperature sensor 18 which are arranged on the heating steam extraction pipe 02; a heat supply network drain pipe pressure sensor 10 and a heat supply network drain pipe temperature sensor 11 which are arranged on the heat supply network drain pipe 04; a pre-mixing condensate pipe temperature sensor 12 provided in the condensate pipe 05 and upstream of the mixing pipe 07; a mixed condensate pipe temperature sensor 13 and a condensate pipe pressure sensor 16 provided in the condensate pipe 05 and downstream of the mixing pipe 07; the data processor is in signal connection with the data acquisition component and the condensate and drain pump 09, and is used for determining heat supply power data of the heat supply network through the heat supply capacity measuring method according to any one of the above. The invention recognizes that the main reason of inaccurate measurement of the heating capacity of the heat supply network heater 03 is that when the pressure of the heat supply network hydrophobic pipe 04 suddenly changes, the temperature cannot be changed to increase bubbles in the pipe, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, accurate heat supply network water delivery flow data cannot be obtained, and accurate heat supply network heating power data cannot be calculated.
A heating capacity measurement apparatus comprising:
a memory for storing a computer program;
a processor for implementing the steps of the heating capacity measurement method as described in any one of the above when executing the computer program. According to the heat supply capacity measuring method provided by the invention, the drainage pressure data of the heat supply network, the drainage temperature data of the heat supply network, the temperature data of the heating steam extraction pipe, the pressure data of the heating steam extraction pipe, the temperature data of the condensate pipe before mixing, the temperature data of the condensate pipe after mixing, the pressure data of the condensate pipe and the drainage pump data of the condensate pipe are collected; determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data; determining condensate flow data according to the condensate drain pump data, the mixed condensate temperature data and the condensate pressure data; determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data; and determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network. The invention recognizes that the main reason of inaccurate measurement of the heating capacity of a heating network heater is that when the pressure of a heating network hydrophobic pipe suddenly changes, the temperature is not changed to increase bubbles in the pipe, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, accurate heating network water delivery flow data cannot be obtained, and the accurate heating network heating power data cannot be calculated.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of a heating capacity measurement method as described in any one of the above. According to the heat supply capacity measuring method provided by the invention, the drainage pressure data of the heat supply network, the drainage temperature data of the heat supply network, the temperature data of the heating steam extraction pipe, the pressure data of the heating steam extraction pipe, the temperature data of the condensate pipe before mixing, the temperature data of the condensate pipe after mixing, the pressure data of the condensate pipe and the drainage pump data of the condensate pipe are collected; determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data; determining condensate flow data according to the condensate drain pump data, the mixed condensate temperature data and the condensate pressure data; determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data; and determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network. The invention recognizes that the main reason of inaccurate measurement of the heating capacity of a heating network heater is that when the pressure of a heating network hydrophobic pipe suddenly changes, the temperature is not changed to increase bubbles in the pipe, a gas-liquid mixture which cannot be subjected to accurate flow calculation is formed, accurate heating network water delivery flow data cannot be obtained, and the accurate heating network heating power data cannot be calculated.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The method, the device and the system for measuring the heat supply capacity provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (8)
1. A heating capacity measurement method, characterized by comprising:
collecting heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, pre-mixing condensation pipe temperature data, post-mixing condensation pipe temperature data, condensation pipe pressure data and condensation pipe drainage pump data;
determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data;
determining condensate flow data according to the condensate drain pump data, the mixed condensate temperature data and the condensate pressure data;
determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data;
Determining heat supply power data of a heat supply network according to the enthalpy data of the heating steam extraction pipe, the drainage enthalpy data of the heat supply network and the drainage flow data of the heat supply network;
the determining the heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data comprises the following steps:
determining the water delivery flow m of the heat supply network by the following method 1 ；
H is enthalpy data of the mixed condensate pipe; h is a 1 Hydrophobic enthalpy data for the heat supply network; h is a 2 Enthalpy data for the pre-mix condensate; m is the condensate pipe flow data;
the determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the heat supply network drainage enthalpy data and the heat supply network drainage flow data comprises the following steps:
determining the heating power data w of the heating network through the following steps;
wherein h is c And enthalpy data of the heating steam extraction pipe.
2. A heating capacity measuring apparatus, comprising:
the collecting module is used for collecting heat supply network drainage pressure data, heat supply network drainage temperature data, heating steam extraction pipe pressure data, condensation pipe temperature data before mixing, condensation pipe temperature data after mixing, condensation pipe pressure data and condensation pipe drainage pump data;
The enthalpy calculation module is used for determining heat supply network hydrophobic enthalpy data according to the heat supply network hydrophobic pressure data and the heat supply network hydrophobic temperature data; determining mixed condensate pipe enthalpy data according to the mixed condensate pipe temperature data and the condensate pipe pressure data; determining enthalpy data of the condensate pipe before mixing according to the temperature data of the condensate pipe before mixing and the pressure data of the condensate pipe; determining heating steam extraction pipe enthalpy data according to the heating steam extraction pipe temperature data and the heating steam extraction pipe pressure data;
the condensate pipe flow module is used for determining condensate pipe flow data according to the condensate pipe drain pump data, the mixed condensate pipe temperature data and the condensate pipe pressure data;
the water pipe flow module is used for determining heat supply network hydrophobic flow data according to the heat supply network hydrophobic enthalpy data, the mixed condensate pipe enthalpy data, the mixed pre-condensate pipe enthalpy data and the condensate pipe flow data;
the heat supply evaluation module is used for determining heat supply power data of the heat supply network according to the enthalpy data of the heating steam extraction pipe, the heat supply network drainage enthalpy data and the heat supply network drainage flow data;
the water delivery pipe flow module comprises:
the flow calculation unit is used for determining the water delivery flow m of the heat supply network through the following steps of 1 ；
H is enthalpy data of the mixed condensate pipe; h is a 1 Hydrophobic enthalpy data for the heat supply network; h is a 2 Enthalpy data for the pre-mix condensate; m is the condensate pipe flow data;
the heating evaluation module includes:
a heat supply calculation unit for determining the heat supply power data w of the heat supply network by the following formula;
wherein h is c And enthalpy data of the heating steam extraction pipe.
3. A heating capacity measurement apparatus, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the heat supply capacity measurement method according to claim 1 when executing the computer program.
4. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the heat supply capacity measuring method according to claim 1.
5. The heat supply capacity measurement system is characterized by comprising a steam turbine, a heating steam extraction pipe, a heating network heater, a heating network drainage pipe, a mixing pipe, a condensation water pipe, a data acquisition component and a data processor;
the steam turbine supplies steam for the heat supply network heater through the heating steam extraction pipe, and drainage of the heat supply network heater is converged into the condensate pipe through the heat supply network drainage pipe and the mixing pipe in sequence;
The condensate pipe comprises a condensate drain pump, and the condensate drain pump is used for pressurizing the drained condensate pipe water mixed with the heating network heater;
the data acquisition component comprises a heating steam extraction pipe pressure sensor and a heating steam extraction pipe temperature sensor which are arranged on the heating steam extraction pipe; a heat supply network drain pipe pressure sensor and a heat supply network drain pipe temperature sensor which are arranged on the heat supply network drain pipe; the pre-mixing condensate pipe temperature sensor is arranged on the condensate pipe and is positioned at the upstream of the mixing pipe; the mixed condensate pipe temperature sensor and the condensate pipe pressure sensor are arranged on the condensate pipe and positioned at the downstream of the mixing pipe;
the data processor is in signal connection with the data acquisition component and the condensate and drain pump and is used for determining heat supply power data of the heat supply network through the heat supply capacity measuring method according to claim 1.
6. The heating capacity measurement system of claim 5, wherein the mixing tube is disposed between two adjacent low pressure heaters on the condensate line.
7. The heating capacity measurement system of claim 6, wherein the mixed condensate line temperature sensor is disposed between the mixing line and a water inlet of a downstream low pressure heater;
The data acquisition assembly further comprises a condensate pipe flow temperature sensor, and the condensate pipe flow temperature sensor is arranged at the downstream of the water outlet of the downstream low-pressure heater;
and the data processor determines the flow data of the condensate pipe through the flow temperature data sent by the flow temperature sensor of the condensate pipe, the drain pump data of the condensate pipe and the pressure data of the condensate pipe.
8. The heating capacity measurement system of claim 7, wherein the condensate flow temperature sensor is disposed downstream of the condensate pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288435.5A CN114674585B (en) | 2022-03-23 | 2022-03-23 | Heat supply capacity measuring method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288435.5A CN114674585B (en) | 2022-03-23 | 2022-03-23 | Heat supply capacity measuring method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114674585A CN114674585A (en) | 2022-06-28 |
| CN114674585B true CN114674585B (en) | 2024-01-12 |
Family
ID=82074117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210288435.5A Active CN114674585B (en) | 2022-03-23 | 2022-03-23 | Heat supply capacity measuring method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114674585B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5363905A (en) * | 1992-03-06 | 1994-11-15 | Bayer Aktiengesellschaft | Method of controlling heat exchangers using enthalpy flow as the correcting variable |
| EP1870646A2 (en) * | 2006-06-19 | 2007-12-26 | Fritz Egger GmbH & Co | Method and device for recovery of condensation heat from a thermodynamic cyclical process |
| CN101737311A (en) * | 2009-12-25 | 2010-06-16 | 东南大学 | Method for measuring drainage pump output of low pressure heater system of thermal generator set based on energy balance |
| CN101750115A (en) * | 2009-12-25 | 2010-06-23 | 东南大学 | Calculation method of flow rate of independent low-pressure drain pump for thermal power units based on energy balance |
| CN203287064U (en) * | 2013-04-23 | 2013-11-13 | 国家电网公司 | Power plant heating steam supply flow measuring device based on heat balance |
| CN103836610A (en) * | 2014-03-05 | 2014-06-04 | 华电电力科学研究院 | Heat supply network water drainage heating system capable of improving economical efficiency of heat supply unit |
| WO2017050207A1 (en) * | 2015-09-21 | 2017-03-30 | 华北电力科学研究院有限责任公司 | Method for analyzing energy efficiency of generator set |
| CN107543733A (en) * | 2017-03-10 | 2018-01-05 | 国电科学技术研究院 | A kind of condenser duty on-line monitoring system and measuring method |
| CN207813675U (en) * | 2017-11-30 | 2018-09-04 | 华电电力科学研究院 | A kind of co-generation unit for carrying on the back heat supply for solidifying pumping |
| CN109211439A (en) * | 2018-10-18 | 2019-01-15 | 国电南京电力试验研究有限公司 | A kind of exhaust enthalpy of low pressure cylinder of steam turbine value on-line monitoring system and method |
| CN111895489A (en) * | 2020-06-17 | 2020-11-06 | 天津国电津能滨海热电有限公司 | Enthalpy value calculation-based unit heat supply steam extraction flow measuring method |
| CN112070358A (en) * | 2020-08-11 | 2020-12-11 | 山东电力研究院 | Method and system for determining electric load adjustment interval of low-vacuum heat supply unit |
| CN113294773A (en) * | 2021-07-09 | 2021-08-24 | 哈尔滨广瀚新能动力有限公司 | Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6575045B2 (en) * | 2001-07-23 | 2003-06-10 | Coso Operating Co., Llc | Apparatus and method for measuring enthalpy and flow rate of a mixture |
| US7031851B2 (en) * | 2003-04-25 | 2006-04-18 | Imi Vision | Method of determining valve leakage based on upstream and downstream temperature measurements |
-
2022
- 2022-03-23 CN CN202210288435.5A patent/CN114674585B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5363905A (en) * | 1992-03-06 | 1994-11-15 | Bayer Aktiengesellschaft | Method of controlling heat exchangers using enthalpy flow as the correcting variable |
| EP1870646A2 (en) * | 2006-06-19 | 2007-12-26 | Fritz Egger GmbH & Co | Method and device for recovery of condensation heat from a thermodynamic cyclical process |
| CN101737311A (en) * | 2009-12-25 | 2010-06-16 | 东南大学 | Method for measuring drainage pump output of low pressure heater system of thermal generator set based on energy balance |
| CN101750115A (en) * | 2009-12-25 | 2010-06-23 | 东南大学 | Calculation method of flow rate of independent low-pressure drain pump for thermal power units based on energy balance |
| CN203287064U (en) * | 2013-04-23 | 2013-11-13 | 国家电网公司 | Power plant heating steam supply flow measuring device based on heat balance |
| CN103836610A (en) * | 2014-03-05 | 2014-06-04 | 华电电力科学研究院 | Heat supply network water drainage heating system capable of improving economical efficiency of heat supply unit |
| WO2017050207A1 (en) * | 2015-09-21 | 2017-03-30 | 华北电力科学研究院有限责任公司 | Method for analyzing energy efficiency of generator set |
| CN107543733A (en) * | 2017-03-10 | 2018-01-05 | 国电科学技术研究院 | A kind of condenser duty on-line monitoring system and measuring method |
| CN207813675U (en) * | 2017-11-30 | 2018-09-04 | 华电电力科学研究院 | A kind of co-generation unit for carrying on the back heat supply for solidifying pumping |
| CN109211439A (en) * | 2018-10-18 | 2019-01-15 | 国电南京电力试验研究有限公司 | A kind of exhaust enthalpy of low pressure cylinder of steam turbine value on-line monitoring system and method |
| CN111895489A (en) * | 2020-06-17 | 2020-11-06 | 天津国电津能滨海热电有限公司 | Enthalpy value calculation-based unit heat supply steam extraction flow measuring method |
| CN112070358A (en) * | 2020-08-11 | 2020-12-11 | 山东电力研究院 | Method and system for determining electric load adjustment interval of low-vacuum heat supply unit |
| CN113294773A (en) * | 2021-07-09 | 2021-08-24 | 哈尔滨广瀚新能动力有限公司 | Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit |
Non-Patent Citations (3)
| Title |
|---|
| 200MW纯凝机组低压转子光轴改造供热研究应用;郭容赫;资源节约与环保;全文 * |
| 代宝民.热工基础课程实验教程.天津大学出版社,2018,全文. * |
| 供热机组汽轮机低压缸排汽流量软测量;田亮;王桐;;系统仿真学报(第05期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114674585A (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021174749A1 (en) | Running operation optimization method and system for steam power system | |
| CN107577859A (en) | A kind of Condenser Fouling degree on-line monitoring method | |
| CN108691585B (en) | A calculation method for the efficiency of the low-pressure cylinder of a condensing steam turbine | |
| CN101825502A (en) | Effluent and drain temperature measurement and calculation method of heater with drain cooler on steam turbine | |
| CN109785187B (en) | Method for correcting power supply coal consumption detection data of generator set | |
| CN101750115B (en) | Flow measuring method for thermal power generation unit independent low pressure drain pump based on energy balance | |
| CN111079302A (en) | Low-pressure cylinder efficiency measuring and calculating system and method | |
| CN103776502B (en) | Fired power generating unit mesolow cylinder entrance reheat heat steam mass flow real time measure method | |
| CN103048020A (en) | Main steam flow online calculation method of power station based on performance testing data | |
| CN102749156A (en) | A method for detecting steam turbine exhaust enthalpy | |
| CN113569497B (en) | Soft measurement method for condenser cooling water flow | |
| CN101737311A (en) | Method for measuring drainage pump output of low pressure heater system of thermal generator set based on energy balance | |
| CN117454582B (en) | A system-level twin model initialization method combining mechanism and optimization algorithm | |
| CN113221477B (en) | Heat balance calculation method for determining circulating water flow | |
| CN114674585B (en) | Heat supply capacity measuring method, device and system | |
| CN106295203A (en) | The unit heat economy online evaluation method that value calculates in real time should be reached based on upper end difference | |
| CN102230817A (en) | Recycled two-phase flow flowmeter calibrating platform of wet steam | |
| CN114970136B (en) | Method and device for determining extraction mass flow of deaerator of nuclear power plant in real time | |
| CN103697958B (en) | The real time measure method of coal unit drum outlet saturation steam mass rate | |
| CN101852658B (en) | Method for measuring and calculating temperature of effluent and drain from heater with steam cooler and drain cooler of steam engine | |
| CN111397679A (en) | Main steam flow measuring device of nuclear power plant and measuring method thereof | |
| CN119394687B (en) | Nuclear power feedwater heater operation performance analysis method | |
| CN115541062A (en) | A water-mixed gas-liquid two-phase geothermal well productivity testing device | |
| CN115809558A (en) | A thermal power unit energy storage characterization method and system based on heat flow modeling | |
| CN114934823B (en) | A method for determining the relationship between the heat extraction steam flow rate and the minimum technical output characteristics of an extraction condensing heating unit |
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 |