CN109695912A - Thermal power plant heat supply network pressure of steam supply control method and system - Google Patents
Thermal power plant heat supply network pressure of steam supply control method and system Download PDFInfo
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- CN109695912A CN109695912A CN201811481197.XA CN201811481197A CN109695912A CN 109695912 A CN109695912 A CN 109695912A CN 201811481197 A CN201811481197 A CN 201811481197A CN 109695912 A CN109695912 A CN 109695912A
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- pressure
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- gas pipeline
- flow
- power plant
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1003—Arrangement or mounting of control or safety devices for steam heating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
- F24D2220/0207—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
- F24D2220/0271—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/044—Flow sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/046—Pressure sensors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The present invention provides a kind of thermal power plant heat supply network pressure of steam supply control method and systems, method includes the following steps: S1, obtains gas pipeline inlet steam flow and pressure；S2 obtains steam flow and pressure at defeated vapour terminal；S3 obtains steam flow and pressure at subscriber's outlet；S4 constructs steam flow mathematical model and pressure mathematical model；S5, according to the steam stream magnitude at the subscriber's outlet of setting and the steam stream magnitude of the gas pipeline inlet of acquisition, in conjunction with the steam flow mathematical model in step S4, reversely adjust the steam flow of defeated vapour terminal, simultaneously according to the pressure values of the gas pipeline inlet of pressure values and acquisition at the subscriber's outlet of setting, in conjunction with the pressure mathematical model in step S4, the pressure of defeated vapour terminal is reversely adjusted.What the present invention was capable of science is adjusted pipeline pressure, flow information, to obtain normal steam heating at final user pipe.
Description
Technical field
The present invention relates to cogeneration of heat and power technical field more particularly to a kind of thermal power plant heat supply network pressure of steam supply control methods
And system.
Background technique
Thermal power plant, can have surplus heat generation during power generation, these waste heats are just used to heat supply.Power plant both produced
Electric energy, and did using steam turbine generator production method of the steam to user's heat supply of function, i.e., the technique of electricity, thermal energy is produced simultaneously
Process saves fuel compared with production electricity, thermal energy mode respectively.It concentrates in the city of steam power plant's heat supply, Joint Production thermal energy and electric energy
Heat-supplying mode.
It will be delivered at user in vapor collection that power generation process generates in thermal power plant, to carry out heat supply；In steam
In transmission process, it is too low that there is pressure, and user terminal pressure is inadequate, conveying less than；Pressure is excessively high, causes to the valve of user terminal
It impacts larger, influences service life, there are no the sides that a kind of pair of thermal power plant heat supply network pressure of steam supply is controlled for the prior art
Method.
Summary of the invention
The purpose of the present invention is to provide a kind of thermal power plant heat supply network pressure of steam supply control method and systems, it is intended to be used for
Solve the problems, such as that pressure is unable to control in existing thermal power plant steam transmission process.
The present invention is implemented as follows:
On the one hand, the present invention provides a kind of thermal power plant heat supply network pressure of steam supply control method, comprising the following steps:
S1 obtains gas pipeline inlet steam flow and pressure；
S2 obtains steam flow and pressure at defeated vapour terminal；
S3 obtains steam flow and pressure at subscriber's outlet；
S4, in conjunction with the steam flow data at gas pipeline inlet, defeated vapour terminal and at subscriber's outlet, building three
The steam flow mathematical model for locating relationship between steam flow data, at gas pipeline inlet, defeated vapour terminal
And the pressure data at subscriber's outlet, construct the pressure mathematical model of relationship between pressure data at three；
S5, according to the steam stream magnitude at the subscriber's outlet of setting and the steam flow of the gas pipeline inlet of acquisition
Value, in conjunction with the steam flow mathematical model in step S4, reversely adjusts the steam flow of defeated vapour terminal, while according to setting
The pressure values of the gas pipeline inlet of pressure values and acquisition at subscriber's outlet, in conjunction with the pressure mathematical modulo in step S4
Type reversely adjusts the pressure of defeated vapour terminal.
Further, multiple tracks second level gas pipeline is set in defeated vapour terminal, and one end of the second level gas pipeline is logical
Transfer tube is crossed to connect with gas pipeline, the other end is connect with steam pipe road, the gas pipeline, the second level gas pipeline with
And it is described be respectively provided with flow sensor and pressure sensor on steam pipe road, it is defeated to obtain by the corresponding flow sensor
Steam stream magnitude at steam pipe road inlet, defeated vapour terminal and at subscriber's outlet passes through the corresponding pressure sensor
Come obtain gas pipeline inlet, the pressure values at defeated vapour terminal and at subscriber's outlet.
Further, the gas pipeline, the second level gas pipeline, it is described be respectively provided with solenoid valve on steam pipe road,
The gas pipeline inlet is adjusted by adjusting the corresponding solenoid valve, at the defeated vapour terminal and the user
The steam stream magnitude in exit.
Further, the steam flow mathematical model is a three element complex, and three parameters in ternary are respectively defeated
Steam pipe road, second level gas pipeline, the steam flow information with steam pipe road, each parameter have corresponding coefficient, are passed by flow
Sensor obtains the steam stream magnitude of the gas pipeline, uses steam pipe road steam stream magnitude and the steam flow in conjunction with setting
Mathematical model calculates the steam stream magnitude of second level gas pipeline, and the steaming of the second level gas pipeline is adjusted by solenoid valve
Steam flow amount.
Further, booster pump is set on the second level gas pipeline, is adjusted by adjusting the booster pump described
The pressure of defeated vapour terminal.
Further, the pressure mathematical model is a three element complex, and three parameters in ternary are respectively steam transmitting pipe
Road, second level gas pipeline, the pressure information with steam pipe road, each parameter have corresponding coefficient, are obtained by pressure sensor
The pressure values of the gas pipeline, in conjunction with setting to calculate second level with steam pipe road pressure values and the pressure mathematical model defeated
The pressure values in steam pipe road, and adjust by the booster pump pressure of the second level gas pipeline.
Further, the steam flow mathematical model or the pressure mathematical model are direct proportion function or a letter
Number.
On the other hand, the present invention also provides a kind of thermal power plant heat supply network pressure of steam supply control systems, including are set to fire
The gas pipeline in power power plant, the multiple tracks second level gas pipeline for being set to defeated vapour terminal and the use being set at subscriber's outlet
Steam pipe road, described gas pipeline one end input high steam by thermal power plant, and the other end passes through described in adapting pipe and multiple tracks
The connection of second level gas pipeline, the second level gas pipeline are connect with steam pipe road, the gas pipeline, the second level gas pipeline
And it is described with pressure sensor, flow sensor and solenoid valve is provided on steam pipe road, which further includes server, respectively
The pressure sensor, each flow sensor and each solenoid valve pass through signal wire and connect with the server,
Booster pump is provided on the second level gas pipeline, the motor of the booster pump is connect by conducting wire with the server, described
Server is used for above-mentioned method.
Compared with prior art, the invention has the following advantages:
This thermal power plant heat supply network pressure of steam supply control method and system provided by the invention are entered by obtaining steam pipe road
Mouthful at, steam flow and pressure data at defeated vapour terminal and at subscriber's outlet, construct steam flow data at three respectively
Between relationship steam flow mathematical model and three between pressure data relationship pressure mathematical model, obtain corresponding close
System supplies so that science is adjusted pipeline pressure, flow information to obtain normal steam at final user pipe
Heat.By the way that pipeline is divided into three, so that the conveying of steam is divided into three processes, it is both provided on each road pipeline
Corresponding pressure sensor and flow sensor are distinguished to obtain pressure, flow information, and by solenoid valve and booster pump
Steam flow and pressure are adjusted, it is easy to adjust.
Detailed description of the invention
Fig. 1 is a kind of flow chart of thermal power plant heat supply network pressure of steam supply control method provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of thermal power plant heat supply network pressure of steam supply control method, including following
Step:
S1 obtains gas pipeline inlet steam flow and pressure；
S2 obtains steam flow and pressure at defeated vapour terminal；
S3 obtains steam flow and pressure at subscriber's outlet；
S4, in conjunction with the steam flow data at gas pipeline inlet, defeated vapour terminal and at subscriber's outlet, building three
The steam flow mathematical model for locating relationship between steam flow data, at gas pipeline inlet, defeated vapour terminal
And the pressure data at subscriber's outlet, construct the pressure mathematical model of relationship between pressure data at three；
S5, according to the steam stream magnitude at the subscriber's outlet of setting and the steam flow of the gas pipeline inlet of acquisition
Value, in conjunction with the steam flow mathematical model in step S4, reversely adjusts the steam flow of defeated vapour terminal, while according to setting
The pressure values of the gas pipeline inlet of pressure values and acquisition at subscriber's outlet, in conjunction with the pressure mathematical modulo in step S4
Type reversely adjusts the pressure of defeated vapour terminal.
The above method can be executed by server, wherein the tandem that the step S1~S3 is executed is unlimited.
This thermal power plant heat supply network pressure of steam supply control method provided by the invention, by obtain steam pipe road inlet,
Steam flow and pressure data at defeated vapour terminal and at subscriber's outlet, construct close between steam flow data at three respectively
At the steam flow mathematical model of system and three between pressure data relationship pressure mathematical model, obtain corresponding relationship, thus
Science is adjusted pipeline pressure, flow information, to obtain normal steam heating at final user pipe.
The specific implementation of the above method is as follows:
Gas pipeline is provided in thermal power plant, gas pipeline one end inputs high steam, user by thermal power plant
Useful steam pipe road is arranged in exit, and multiple tracks second level gas pipeline is arranged in the present embodiment also in defeated vapour terminal, and the second level is defeated
The one end in steam pipe road is connect by transfer tube with gas pipeline, and the other end is connect with steam pipe road, in the gas pipeline, described
Second level gas pipeline and it is described be respectively provided with flow sensor and pressure sensor on steam pipe road, for detecting the steaming of each pipeline
Steam flow amount and pressure information, each flow sensor and pressure sensor pass through signal wire and connect with the server, the clothes
Business device is obtained respectively by the gas pipeline, the second level gas pipeline and the flow sensor on steam pipe road
Steam stream magnitude at gas pipeline inlet, defeated vapour terminal and at subscriber's outlet, the server pass through the defeated vapour
Pipeline, the second level gas pipeline and the pressure sensor on steam pipe road come obtain respectively gas pipeline inlet,
Pressure values at defeated vapour terminal and at subscriber's outlet.It is provided with memory module in the server, memory module is to acquisition
Pressure, the flow information of each pipeline are stored.At server combination gas pipeline inlet, defeated vapour terminal and user
The steam flow data in exit are analyzed, and the steam flow mathematical model of relationship between steam flow data at three is constructed,
While the pressure data at server combination gas pipeline inlet, defeated vapour terminal and at subscriber's outlet, it constructs and is pressed at three
The pressure mathematical model of relationship between strong data；The mathematical model can be direct proportion function, linear function etc..
Preferably, the gas pipeline, the second level gas pipeline, it is described be respectively provided with solenoid valve on steam pipe road, use
In the opening and closing degree for controlling each pipeline to control steam flow, the solenoid valve is connect by signal wire with the server,
The server adjusted by adjusting the corresponding solenoid valve gas pipeline inlet, at the defeated vapour terminal with
And the steam stream magnitude at the subscriber's outlet.
Specifically, the steam flow mathematical model is a three element complex, and three parameters in ternary are respectively defeated vapour
Pipeline, second level gas pipeline, the steam flow information with steam pipe road, each parameter have corresponding coefficient, wherein gas pipeline
Steam stream magnitude is definite value, and with steam pipe road steam stream magnitude by server settings, server obtains institute by flow sensor
The steam stream magnitude for stating gas pipeline uses steam pipe road steam stream magnitude and the steam flow mathematical model meter in conjunction with setting
It calculates the steam stream magnitude of second level gas pipeline and is adjusted by the solenoid valve, to adjust the steaming of defeated vapour terminal
Steam flow amount completes the control to pipeline steam flow.
Preferably, booster pump is set on the second level gas pipeline, for adjusting the pressure in pipeline, the booster pump
Motor connect with server by conducting wire, the server adjusts the defeated vapour terminal by the adjusting booster pump
Pressure, to change the pressure with steam pipe road.
Specifically, the pressure mathematical model is a three element complex, three parameters in ternary be respectively gas pipeline,
Second level gas pipeline, the pressure information with steam pipe road, each parameter have corresponding coefficient, and wherein gas pipeline pressure values can not
Change, with steam pipe road pressure values by server settings, the server obtains the gas pipeline by pressure sensor
Pressure values, in conjunction with the pressure for calculating second level gas pipeline with steam pipe road pressure values and the pressure mathematical model of setting
It is worth, and adjusts the pressure of the second level gas pipeline by the booster pump, so that the pressure of the defeated vapour terminal is adjusted,
And then change the pressure for using steam pipe road, complete the control to pipeline pressure.
The embodiment of the present invention also provides a kind of thermal power plant heat supply network pressure of steam supply control system, including is set to firepower hair
It the gas pipeline of power plant, the multiple tracks second level gas pipeline for being set to defeated vapour terminal and is set at subscriber's outlet and uses steam pipe
Road, described gas pipeline one end input high steam by thermal power plant, and the other end passes through second level described in adapting pipe and multiple tracks
Gas pipeline connection, the second level gas pipeline connect with steam pipe road, the gas pipeline, the second level gas pipeline and
Described with pressure sensor, flow sensor and solenoid valve is provided on steam pipe road, the system further includes server, each described
Pressure sensor, each flow sensor and each solenoid valve pass through signal wire and connect with the server, described
Booster pump is provided on second level gas pipeline, the motor of the booster pump is connect by conducting wire with the server, the service
The method that device is used to execute above-described embodiment, overlaps will not be repeated.
Preferably, it is provided with memory module in the server, for storing the gas pipeline, the second level steam transmitting pipe
Road and the pressure with steam pipe road, flow information.
This thermal power plant heat supply network pressure of steam supply control system provided in an embodiment of the present invention, by dividing pipeline
Be three, so that the conveying of steam is divided into three processes, be both provided on each road pipeline corresponding pressure sensor and
Flow sensor is to obtain pressure, flow information；Server establishes mathematical modulo by pressure, the flow information to three's pipeline
Type obtains corresponding relationship, so that science is adjusted pipeline pressure, flow information, so as at final user pipe
Obtain normal steam heating.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of thermal power plant heat supply network pressure of steam supply control method, which comprises the following steps:
S1 obtains gas pipeline inlet steam flow and pressure；
S2 obtains steam flow and pressure at defeated vapour terminal；
S3 obtains steam flow and pressure at subscriber's outlet；
S4 steams at building three in conjunction with the steam flow data at gas pipeline inlet, defeated vapour terminal and at subscriber's outlet
The steam flow mathematical model of relationship between vapour data on flows, in combination at gas pipeline inlet, defeated vapour terminal and
Pressure data at subscriber's outlet constructs the pressure mathematical model of relationship between pressure data at three；
S5, according to the steam stream magnitude at the subscriber's outlet of setting and the steam stream magnitude of the gas pipeline inlet of acquisition,
In conjunction with the steam flow mathematical model in step S4, the steam flow of defeated vapour terminal is reversely adjusted, while according to the use of setting
The pressure values of the gas pipeline inlet of the pressure values and acquisition in family exit, in conjunction with the pressure mathematical model in step S4,
Reversely adjust the pressure of defeated vapour terminal.
2. heat supply network pressure of steam supply control method in thermal power plant as described in claim 1, it is characterised in that: in defeated vapour terminal
One end of middle setting multiple tracks second level gas pipeline, the second level gas pipeline is connect by transfer tube with gas pipeline, the other end
Connect with steam pipe road, the gas pipeline, the second level gas pipeline and it is described be respectively provided on steam pipe road flow pass
Sensor and pressure sensor, obtained by the corresponding flow sensor gas pipeline inlet, at defeated vapour terminal with
And the steam stream magnitude at subscriber's outlet, gas pipeline inlet is obtained by the corresponding pressure sensor, in defeated vapour
Turn the pressure values at station and at subscriber's outlet.
3. heat supply network pressure of steam supply control method in thermal power plant as claimed in claim 2, it is characterised in that: in the steam transmitting pipe
Road, the second level gas pipeline, it is described be respectively provided with solenoid valve on steam pipe road, adjusted by adjusting the corresponding solenoid valve
Steam stream magnitude at the gas pipeline inlet, the defeated vapour terminal and at the subscriber's outlet.
4. heat supply network pressure of steam supply control method in thermal power plant as claimed in claim 3, it is characterised in that: the steam flow
Mathematical model is a three element complex, and three parameters in ternary are respectively gas pipeline, second level gas pipeline, with steam pipe road
Steam flow information, each parameter have corresponding coefficient, and the steam flow of the gas pipeline is obtained by flow sensor
Value, in conjunction with the steaming for calculating second level gas pipeline with steam pipe road steam stream magnitude and the steam flow mathematical model of setting
Steam flow magnitude, and adjust by solenoid valve the steam flow of the second level gas pipeline.
5. heat supply network pressure of steam supply control method in thermal power plant as claimed in claim 2, it is characterised in that: defeated in the second level
Booster pump is arranged on road in steam pipe, adjusts the pressure of the defeated vapour terminal by adjusting the booster pump.
6. heat supply network pressure of steam supply control method in thermal power plant as claimed in claim 5, it is characterised in that: the pressure mathematics
Model is a three element complex, and three parameters in ternary are respectively gas pipeline, second level gas pipeline, with the pressure in steam pipe road
Information, each parameter have corresponding coefficient, the pressure values of the gas pipeline are obtained by pressure sensor, in conjunction with setting
The pressure values of second level gas pipeline are calculated with steam pipe road pressure values and the pressure mathematical model, and pass through the booster pump
To adjust the pressure of the second level gas pipeline.
7. heat supply network pressure of steam supply control method in thermal power plant as described in claim 1, it is characterised in that: the steam flow
Mathematical model or the pressure mathematical model are direct proportion function or linear function.
8. a kind of thermal power plant heat supply network pressure of steam supply control system, it is characterised in that: including being set to the defeated of thermal power plant
Steam pipe road, the multiple tracks second level gas pipeline for being set to defeated vapour terminal and the use steam pipe road being set at subscriber's outlet, it is described
Gas pipeline one end inputs high steam by thermal power plant, and the other end passes through second level gas pipeline described in adapting pipe and multiple tracks
Connection, the second level gas pipeline connect with steam pipe road, the gas pipeline, the second level gas pipeline and described uses vapour
Pressure sensor, flow sensor and solenoid valve are provided on pipeline, which further includes server, each pressure sensing
Device, each flow sensor and each solenoid valve pass through signal wire and connect with the server, the defeated vapour of second level
Booster pump is provided on pipeline, the motor of the booster pump is connect by conducting wire with the server, and the server is for holding
Row the method as described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481197.XA CN109695912B (en) | 2018-12-05 | 2018-12-05 | Method and system for controlling steam supply pressure of heat supply network of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481197.XA CN109695912B (en) | 2018-12-05 | 2018-12-05 | Method and system for controlling steam supply pressure of heat supply network of thermal power plant |
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| Publication Number | Publication Date |
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| CN109695912A true CN109695912A (en) | 2019-04-30 |
| CN109695912B CN109695912B (en) | 2020-09-11 |
Family
ID=66230283
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811481197.XA Active CN109695912B (en) | 2018-12-05 | 2018-12-05 | Method and system for controlling steam supply pressure of heat supply network of thermal power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114020050A (en) * | 2021-09-23 | 2022-02-08 | 华能国际电力股份有限公司大连电厂 | Thermal power generation flow control method |
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| Publication number | Publication date |
|---|---|
| CN109695912B (en) | 2020-09-11 |
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