CN114020059B - Method and device for automatically controlling multi-channel pressure regulating system of natural gas distribution and transmission station user - Google Patents
Method and device for automatically controlling multi-channel pressure regulating system of natural gas distribution and transmission station user Download PDFInfo
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- CN114020059B CN114020059B CN202111302128.XA CN202111302128A CN114020059B CN 114020059 B CN114020059 B CN 114020059B CN 202111302128 A CN202111302128 A CN 202111302128A CN 114020059 B CN114020059 B CN 114020059B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a method and a device for automatically controlling a multi-channel pressure regulating system of a natural gas distribution and transmission station user. According to the automatic control device of the multi-channel pressure regulating system of the natural gas sub-transmission station user, the field equipment can be automatically controlled by sending an instruction according to the acquired technological conditions of the pressure regulating sleds, the opening and closing increasing operation and the closing decreasing operation of the natural gas sub-transmission pressure regulating branches are executed, the intelligent degree of the operation of the natural gas station is improved, and the automatic control method can automatically complete the valve position control of the multi-channel pressure regulating system of the user according to the technological conditions of the pressure regulating sleds, so that the risk of manual operation is reduced, and the intelligent degree of the operation of the natural gas station is improved.
Description
Technical Field
The invention relates to the technical field of natural gas sub-transmission stations, in particular to a method and a device for automatically controlling a multi-channel pressure regulating system of a user of a natural gas sub-transmission station.
Background
The natural gas separate-transmission station performs separate-transmission control on downstream users through a pressure regulating system. The pressure regulating system generally comprises an inlet electric valve of a pressure regulating area, a safety cut-off valve, a monitoring pressure regulating valve, a work regulating valve, a pressure transmitter and an outlet electric valve of the pressure regulating area. The core equipment for realizing the separate transmission pressure regulating function is a working regulating valve, and the programmable logic controller of the station yard controls the valve opening of the working regulating valve in real time through a flow regulating PID control block or a pressure regulating PID control block according to flow and pressure data acquired by a flow meter and a pressure transmitter of the separate transmission site so as to realize automatic control of a separate transmission pressure regulating system.
The users with larger distribution and delivery quantity in the existing natural gas station mostly adopt a multi-channel pressure regulating system for continuous gas delivery, wherein one channel of pressure regulating is automatically controlled, and the other channels are manually valve position controlled. When the gas consumption of the user fluctuates, the valve of the automatic control branch circuit automatically adjusts the opening degree, the manual control branch circuit remains unchanged, when the gas consumption of the user fluctuates greatly, if the gas consumption of the urban gas user has obvious peaks and troughs every day, the gas consumption of the user is in the peak period of daytime, the pipeline flow is large, one path of automatic control pressure regulating branch circuit cannot meet the gas consumption requirement of the user, and the valve position of the branch circuit controlled by the manual valve position needs to be adjusted to a larger opening degree; when the gas consumption period at night arrives at the valley period, the pipeline flow is smaller, and because the valve position opening of the branch controlled by the manual valve position is larger, the flow is still larger after the work regulating valve of the automatic control branch is completely closed, the downstream sub-transmission pressure can continuously rise, and in order to ensure safe production, the valve opening of the manual valve position control branch is required to be reduced by operators on duty. The requirement on the experience level of the operator is relatively high, and the operator is required to judge the valve position control range of the working regulating valve relatively accurately according to the control target instruction and the current state, the pressure and the flow parameters of the working regulating valve, and modify the valve position control value.
However, with the proposal of the construction concept of intelligent pipe network and intelligent pipeline, the unmanned and intelligent construction of the natural gas separate-transmission station is gradually advanced, and the operation of the natural gas separate-transmission station is changed from station operation to unified control of a regulation center. At present, few personnel in a regulation center are needed, only one person often monitors a single gas pipeline, the number of stations for monitoring is large, hundreds of stations for separating and conveying can be monitored, and valve positions cannot be manually adjusted according to an original method.
Disclosure of Invention
The invention aims to provide a method and a device for automatically controlling a user multi-channel pressure regulating system of a natural gas distribution and transmission station, and the method can automatically complete valve position control of the user multi-channel pressure regulating system according to the technological condition of a pressure regulating sledge, reduce the risk of manual operation, improve the intelligent degree of the operation of the natural gas station, and solve the problem of the prior art that the intelligent degree of the operation of the natural gas station with larger risk of manual operation is lower.
In order to achieve the above purpose, the present invention provides the following technical solutions: the device for automatically controlling the multi-channel pressure regulating system of the natural gas distribution and transmission station user comprises a controller body, wherein a communication module is fixedly installed at one side position of the front surface of the outer part of the controller body, a calculation module is fixedly installed at the other side position of the front surface of the outer part of the controller body, a starting switch is preset at the lower end position of the side of the front surface of the outer part of the communication module, and a butt joint port is preset at the upper end position of the front surface of the outer part of the calculation module.
Preferably, the upper end position of the front side of the communication module is fixedly provided with a working state signal lamp, and the working state signal lamp is symmetrically and fixedly provided with a plurality of working state signal lamps at equal intervals outside the communication module to form a lamp group.
Preferably, the middle position of the front side of the communication module is preset with communication interfaces, and the communication interfaces are always symmetrically provided with three identical specifications at equal intervals outside the communication module.
Preferably, the lower end position of the side of the front surface of the communication module is pre-provided with an ethernet port, a transmission signal lamp is fixedly arranged at one side position of the front surface of the outer part of the ethernet port, and a receiving signal lamp is fixedly arranged at the other side position of the front surface of the outer part of the ethernet port.
The method for automatically controlling the multi-channel pressure regulating system of the natural gas distribution and transmission station user comprises the following specific steps:
s1: the method comprises the steps that in actual use, a controller body collects state information, instrument numerical value information, instruction information and flowmeter data information issued by personnel of each device of a pressure regulating sledge in real time, analyzes and processes the information according to the collected information and issued control instructions, further executes valve position synchronous automatic control of a plurality of working regulating valves, judges whether opening or closing operation of the pressure regulating branch is required to be executed, and when the pressure regulating branch is required to be started or stopped, performs corresponding operation according to set priority;
s2: the communication module is used for carrying out data exchange with the existing database or PLC of the station, the communication is bidirectional, and the communication module can acquire data such as state information, instrument numerical value information, command information issued by personnel, flowmeter data information and the like of each equipment in the pressure regulating area of the natural gas station from the opposite-end equipment and can also transmit data such as valve control commands and the like related in the pressure regulating process to the opposite-end equipment;
s3: the calculation module analyzes and processes the acquired information, executes automatic valve position control of the work regulating valve according to a set control target, judges whether the opening or closing increasing operation or the closing decreasing operation is required to be executed, and controls the opening or closing increasing executing process in real time;
s4: on the basis of determining the using mode of the main control equipment and knowing the functions of the internal modules, the priority of the configured voltage regulating branch is set in advance in the controller body, then the state information of the multi-channel voltage regulating system equipment is acquired through the communication module on the premise that the SCADA system of the existing long-distance natural gas pipeline station is formed, the state of the field equipment is judged through the calculation module, and the automatic control work of the multi-channel voltage regulating system is executed.
Compared with the prior art, the method and the device for automatically controlling the multi-channel pressure regulating system of the natural gas separate transmission station user have the beneficial effects that:
1. according to the automatic control device of the multi-channel pressure regulating system of the natural gas branch transmission station, the automatic control device can send out instructions to automatically control the field device according to the acquired technological conditions of the pressure regulating sleds, perform the opening and closing increasing operation and the closing operation of the natural gas branch transmission and pressure regulating branch, and improve the intelligent degree of the operation of the natural gas station;
2. according to the method for automatically controlling the multi-channel pressure regulating system of the natural gas distribution and transmission station user, the valve position control of the multi-channel pressure regulating system of the user can be automatically finished according to the technological conditions of the pressure regulating sledge, the risk of manual operation is reduced, and the intelligent degree of the operation of the natural gas station is improved.
3. The method for automatically controlling the multi-channel pressure regulating system of the natural gas distribution and delivery station is suitable for automatically controlling the whole flow of the multi-channel pressure regulating system of all natural gas distribution and delivery stations, the PLC control system is used for programming, the man-machine interaction system is configured, the opening degree of the working regulating valve can be timely and accurately calculated and judged according to the control target and the change of the natural gas distribution and delivery process parameters through the actual test application of the production site, and whether the opening or the closing of the pressure regulating branch is needed, so that the automatic regulation of the multi-channel pressure regulating system is realized, and the expected control effect is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the structural device of the present invention;
FIG. 2 is a flow chart of the natural gas partial pressure transmission and regulation logic execution of the invention;
FIG. 3 is a table showing the comparison of the inventive process with the original process.
In the figure: 1. a controller body; 2. a communication module; 3. a computing module; 4. starting a switch; 5. a working state signal lamp; 6. a docking port; 7. a communication interface; 8. an ethernet port; 9. transmitting a signal lamp; 10. a signal lamp is received.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1-2, the present invention provides a technical solution: the automatic control method and device for the multi-channel pressure regulating system of the natural gas distribution and transmission station user comprise a controller body 1, wherein a communication module 2 is fixedly arranged at one side position of the front surface outside the controller body 1, a calculation module 3 is fixedly arranged at the other side position of the front surface outside the controller body 1, a starting switch 4 is preset at the lower end position of the side of the front surface outside the communication module 2, and a butt joint port 6 is preset at the upper end position of the front surface outside the calculation module 3.
Furthermore, the working state signal lamps 5 are fixedly arranged at the upper end positions of the front side of the outside of the communication module 2, and a plurality of working state signal lamps 5 are symmetrically and equally fixedly arranged outside the communication module 2 to form a lamp group, so that the whole use fluency of the controller body 1 is improved;
furthermore, a communication interface 7 is preset at the middle position of the front side of the outside of the communication module 2, and three communication interfaces 7 with the same specification are symmetrically arranged at equal intervals outside the communication module 2, wherein the three communication interfaces 7 respectively adopt two RS-232 models and one RS-485 model;
further, the ethernet port 8 is preset at the lower end position of the side of the external front surface of the communication module 2, the transmission signal lamp 9 is fixedly installed at one side position of the external front surface of the ethernet port 8, the receiving signal lamp 10 is fixedly installed at the other side position of the external front surface of the ethernet port 8, and visual judgment can be performed on signal transmission and signal reception in normal use work of the communication module 2.
The working flow is as follows: in actual use, the controller body 1 collects the status information of each device of the pressure regulating sledge, the instrument numerical value information, the instruction information and the flowmeter data information issued by personnel in real time, analyzes and processes according to the collected information and the issued control instruction, further executes the valve position synchronous automatic control of a plurality of working regulating valves, judges whether the opening or closing operation of the pressure regulating branch needs to be executed, when the pressure regulating branch needs to be started or stopped, the corresponding operation is carried out through the set priority, the function of the internal module of the controller body 1 needs to be known in the use process, the communication module 2 is used for carrying out data exchange with the existing database or PLC of the station, the communication is bidirectional, and can collect the data such as the status information of each device of the pressure regulating area of the natural gas station, the instrument numerical value information, the instruction information issued by personnel, the flowmeter data information and the like from the opposite-end device, the data such as valve control command and the like involved in the pressure regulating process can be transmitted to the opposite terminal equipment, the calculation module 3 analyzes and processes the acquired information, the automatic valve position control of the work regulating valve is executed according to the set control target, whether the opening or closing increasing operation or the closing decreasing operation is needed to be executed is judged, the opening or closing increasing execution process is controlled in real time, finally, the priority of the pressure regulating branch is set and configured in advance in the controller body 1 on the basis of determining the using mode of the main control equipment and knowing the functions of the internal module, the state information of the multi-channel pressure regulating system equipment is acquired through the communication module 2 on the premise of the SCADA system of the existing long-distance natural gas pipeline station, the state of the on-site equipment is judged through the calculation module 3, the automatic control work of the multi-channel pressure regulating system is executed, and the method is implemented according to the first embodiment, the method has the advantages that the operation time of the multi-channel voltage regulating system with the same number of days is obviously more intelligent compared with that of the original method, the automatic regulation of the multi-channel voltage regulating system can be realized, the expected control effect is achieved, and the time is saved compared with that of the original method.
It should be noted that, the communication module and the calculation module in the method are in the prior art, and the model number is not limited, so the communication module and the calculation module are not described in the text.
Finally, it should be noted that the above description is only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and that the simple modification and equivalent substitution of the technical solution of the present invention can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. The automatic control method of the multi-channel pressure regulating system of the natural gas distribution and transmission station user comprises the following specific steps:
s1: in actual use, the controller body (1) collects state information, instrument numerical information, instruction information issued by personnel and flowmeter data information of each device of the pressure regulating sledge in real time, analyzes and processes the information according to the collected information and issued control instructions, further executes valve position synchronous automatic control of a plurality of working regulating valves, judges whether opening or closing operation of the pressure regulating branch is required to be executed, and when the pressure regulating branch is required to be started or stopped, carries out corresponding operation through set priority;
s2: the communication module (2) is used for exchanging data with the existing database or PLC of the station, the data exchange is bidirectional, and the data exchange can acquire data such as state information, instrument numerical value information, command information issued by personnel, flowmeter data information and the like of each equipment in the pressure regulating area of the natural gas station from the opposite-end equipment and can transmit data such as valve control commands and the like related in the pressure regulating process to the opposite-end equipment;
s3: the calculation module (3) analyzes and processes the acquired information, executes automatic valve position control of the work regulating valve according to a set control target, judges whether opening or closing increasing operation or closing decreasing operation is required to be executed, and controls the opening or closing increasing executing process in real time;
s4: on the basis of determining the using mode of the main control equipment and knowing the functions of the internal modules, the priority of the configured voltage regulating branch is set in advance in the controller body (1), then the state information of the multi-channel voltage regulating system equipment is acquired through the communication module (2) on the premise that the SCADA system of the existing long-distance natural gas pipeline station is formed, the state of the field equipment is judged through the calculation module, and the automatic control work of the multi-channel voltage regulating system is executed.
2. The method for automatically controlling a multi-channel pressure regulating system of a natural gas distribution and transmission station user according to claim 1, comprising an automatic control device, comprising a controller body (1), characterized in that: the intelligent controller is characterized in that a communication module (2) is fixedly installed at one side position of the outer front face of the controller body (1), a calculation module (3) is fixedly installed at the other side position of the outer front face of the controller body (1), a starting switch (4) is preset at the lower end position of the side of the outer front face of the communication module (2), and a butt joint port (6) is preset at the upper end position of the outer front face of the calculation module (3).
3. The method for automatically controlling the multi-channel pressure regulating system of the natural gas distribution and transmission station user according to claim 2, wherein the method comprises the following steps: the upper end position of the front side of the outside of the communication module (2) is fixedly provided with a working state signal lamp (5), and a plurality of working state signal lamps (5) are symmetrically and fixedly arranged at equal intervals outside the communication module (2) to form a lamp group.
4. A method for automatically controlling a multi-channel voltage regulating system of a natural gas distribution and transmission station user according to claim 3, wherein the method comprises the following steps: the communication interface (7) is preset at the middle position of the front side of the outside of the communication module (2), and the three communication interfaces (7) are longitudinally and equidistantly symmetrically arranged outside the communication module (2) and have the same specification.
5. The method for automatically controlling the multi-channel pressure regulating system of the natural gas distribution and transmission station user according to claim 4, wherein the method comprises the following steps: the lower extreme position of communication module (2) outside openly avris is equipped with ethernet port (8) in advance, and the outside openly of ethernet port (8) one side position fixed mounting has transmission signal lamp (9), the outside openly opposite side position fixed mounting of ethernet port (8) has receiving signal lamp (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111302128.XA CN114020059B (en) | 2021-11-04 | 2021-11-04 | Method and device for automatically controlling multi-channel pressure regulating system of natural gas distribution and transmission station user |
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| CN202111302128.XA CN114020059B (en) | 2021-11-04 | 2021-11-04 | Method and device for automatically controlling multi-channel pressure regulating system of natural gas distribution and transmission station user |
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| CN114020059A CN114020059A (en) | 2022-02-08 |
| CN114020059B true CN114020059B (en) | 2023-08-18 |
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