CN114659034A - Real-time antifreeze filling method and system - Google Patents
Real-time antifreeze filling method and system Download PDFInfo
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- CN114659034A CN114659034A CN202210301695.1A CN202210301695A CN114659034A CN 114659034 A CN114659034 A CN 114659034A CN 202210301695 A CN202210301695 A CN 202210301695A CN 114659034 A CN114659034 A CN 114659034A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a real-time antifreeze filling method and a real-time antifreeze filling system, which are applied to the technical field of antifreeze filling, wherein the method comprises the following steps: acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time; selecting a filling mode, and when the filling mode is a full-automatic mode, realizing the rotation speed adjustment of an antifreeze filling motor according to the filling pipeline environment data, the filling pipeline pressure data, the current antifreeze filling flow data, the mapping relation between the preset temperature and the filling flow and the mapping relation between the preset filling flow and the motor rotation speed, so as to complete the filling of the antifreeze; according to the invention, the temperature of the gas transmission pipeline is acquired through the temperature sensor, and the corresponding motor rotating speed is calculated according to the temperature value, the pressure of the filling pipeline and other information, so that the accurate filling of the antifreezing agent is realized.
Description
Technical Field
The invention relates to the technical field of antifreeze filling, in particular to an antifreeze real-time filling method and an antifreeze real-time filling system.
Background
At present, mixed gas in a gas transmission pipeline is easy to freeze in a low-temperature environment, the transmission efficiency of the gas transmission pipeline is reduced, and the gas transmission pipeline is blocked and serious production accidents are caused in serious cases.
However, the existing solution is to measure the temperature of the gas pipeline manually, and add a proper amount of antifreeze into the pipeline when the temperature reaches a certain condition. Although the operation mode can prevent the air conveying pipeline from being blocked due to icing, the following defects also exist: 1. in the actual operation process, an operator on duty is required to measure the temperature of the pipeline in a manual mode, the temperature measuring equipment is an infrared temperature measuring gun, and the temperature measuring precision of the infrared temperature measuring gun is influenced by distance, surface flatness and the like, so that the temperature difference of the pipe wall measured at the same point and the same time can reach several degrees; 2. the manual measurement frequency is low, the response to temperature change is slow, and the filling amount of the antifreezing agent cannot be dynamically controlled; 3. after manual temperature measurement, a table needs to be looked up to obtain corresponding filling amount, then the opening degree of a filling pump is adjusted to achieve the purpose of filling different amounts of antifreeze in different temperature intervals, the opening degree of the pump is adjusted manually, accurate filling amount cannot be achieved, and in order to prevent pipeline blockage, the filling amount of the antifreeze is usually higher than an actually required value, so that a large amount of antifreeze is wasted and the pipe cleaning times are increased; 4. the only basis for controlling the antifreeze filling pump is that the temperature is high or low, if a pipeline is blocked, the filling pump can continuously fill antifreeze, so that the pipeline pressure is increased to damage the filling pump; 5. in the filling process, an operator on duty is required to check the residual antifreeze in the antifreeze storage tank every day, and when the residual amount of the antifreeze is lower than a safety threshold, the antifreeze is supplemented in time, so that the mode requires that the operator cannot miss the detection.
In summary, the antifreeze agent filling process of the gas transmission pipeline in the whole winter production process needs direct participation of personnel, and the aims of low cost and automatic production cannot be fulfilled.
Therefore, how to provide a real-time antifreeze filling method capable of solving the above problems is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a real-time antifreeze filling method and system, which are used for acquiring the temperature of a gas transmission pipeline through a temperature sensor, and calculating the corresponding motor rotating speed according to the temperature value, the pressure of a filling pipeline and other information so as to realize accurate antifreeze filling.
In order to achieve the purpose, the invention adopts the following technical scheme:
a real-time antifreeze filling method comprises the following steps:
acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time;
and selecting a filling mode, and when the filling mode is a full-automatic mode, realizing the rotation speed adjustment of the antifreeze filling motor according to the filling pipeline environment data, the filling pipeline pressure data, the current antifreeze filling flow data, the mapping relation between the preset temperature and the filling flow and the mapping relation between the preset filling flow and the motor rotation speed, so as to complete the filling of the antifreeze.
Preferably, the specific expression of the mapping relationship between the preset filling flow and the motor rotation speed is as follows:
MotpSpeed＝Ax*PumpVale*(1425/PumpMax)/ValRatio
in the formula: MotpSpeed represents the calculated motor speed value at the current temperature, Ax represents the calculated slope, pumples represents the current antifreeze flow value, pumMax represents the maximum filling flow in the full-speed range of the motor, and Valratio represents the opening value of the pump valve.
Preferably, the filling mode further comprises a semi-automatic mode, and when the filling mode is the semi-automatic mode, a freezing point depressant filling time parameter and a filling flow parameter are preset to complete corresponding amount filling.
Preferably, the method further comprises the following steps:
and timing the antifreeze filling flow of the semi-automatic mode and the full-automatic mode, and forming a production report.
Preferably, the filling pipe environment data includes pipe temperature data and atmospheric temperature data.
Further, the invention also provides a system using the antifreeze agent real-time filling method, which comprises the following steps:
the controller is used for realizing the overall control function of the system;
the parameter acquisition module is electrically connected with the controller and is used for acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time;
the frequency converter is electrically connected with the controller and used for realizing rotation speed regulation;
and the antifreeze filling motor is electrically connected with the frequency converter and is used for completing the filling of the antifreeze according to the adjusting result of the frequency converter.
Preferably, the method further comprises the following steps: the controller comprises a parameter setting and mode selecting module, wherein the parameter setting and mode selecting module is electrically connected with the controller and is used for setting an antifreeze filling time parameter and an antifreeze filling flow parameter and selecting the filling mode.
Preferably, the method further comprises the following steps:
the interface module is electrically connected with the controller and used for accessing equipment;
the display module is electrically connected with the controller and used for displaying data;
and the report module is electrically connected with the controller and is used for recording the filling flow of the anti-freezing solution at regular time and forming a production report.
According to the technical scheme, compared with the prior art, the anti-freezing agent real-time filling method and system can automatically control the variable frequency motor to automatically add the anti-freezing agent according to the temperature change value, the filling amount is consistent with the design value, uninterrupted temperature signal acquisition and dynamic filling can be realized, field operators can be completely replaced, and meanwhile, the integral error of the system is within 5% through manual checking.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a real-time antifreeze filling system provided by the present invention;
fig. 2 is a graph of the relationship between temperature and fill flow provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a real-time antifreeze filling method, which comprises the following steps:
acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time;
and selecting a filling mode, and when the filling mode is a full-automatic mode, realizing the rotation speed adjustment of the antifreeze filling motor according to the filling pipeline environment data, the filling pipeline pressure data, the current antifreeze filling flow data, the mapping relation between the preset temperature and the filling flow and the mapping relation between the preset filling flow and the motor rotation speed, so as to complete the filling of the antifreeze.
In a specific embodiment, a specific expression of a mapping relation between a preset filling flow and a motor rotation speed is as follows:
MotpSpeed＝Ax*PumpVale*(1425/PumpMax)/ValRatio (1)
in the formula: MotpSpeed represents the calculated motor speed value at the current temperature, Ax represents the calculated slope, pumples represents the current antifreeze flow value, pumMax represents the maximum filling flow in the full-speed range of the motor, and Valratio represents the opening value of the pump valve.
Wherein, PumpMax + (12.4-TubPre0.04 (2)
In the formula: 12.4 represents the maximum pressure value of the Mitton Roots pump used in the scheme, the unit is bar, TubPre represents the pressure of a filling pipeline, 0.04 represents a negative correlation value, and the initial value of PumpMax is 11.4L.
Specifically, the mapping relationship between the preset temperature and the filling flow is shown in table 1.
TABLE 1 temperature control filling rules
In a specific embodiment, the filling mode further comprises a semi-automatic mode, and when the filling mode is the semi-automatic mode, the antifreeze filling time parameter and the antifreeze filling flow parameter are preset to complete corresponding amount filling.
In a specific embodiment, the method further comprises the following steps:
and (4) timing the antifreeze filling flow in a semi-automatic mode and a full-automatic mode, and forming a production report.
In one embodiment, the fill pipe environment data includes pipe temperature data and atmospheric temperature data.
Specifically, the method further comprises an offline mode, and offline filling refers to filling in a mode that the frequency converter needs to be controlled manually under special conditions, and filling is performed in a mode that the frequency converter is not controlled by a controller.
Referring to fig. 1, an embodiment of the present invention further provides a system using the real-time antifreeze filling method in any one of the above embodiments, including:
the controller 1 is used for realizing the overall control function of the system;
the parameter acquisition module 2 is electrically connected with the controller 1 and is used for acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time;
wherein, the parameter acquisition module can include: the device comprises a temperature acquisition unit, a pressure acquisition unit and a liquid level acquisition unit;
the frequency converter 3 is electrically connected with the controller 1 and used for realizing rotation speed regulation;
and the antifreeze filling motor 4 is electrically connected with the frequency converter 3 and is used for filling the antifreeze according to the adjusting result of the frequency converter 3.
The controller 1 is an STM32F103 processor, the controller 1 can carry out parameter configuration on the whole after being electrified or restarted each time, and after all configuration work is completed, the controller enters a circulating working state to achieve the purpose of real-time control, meanwhile, a 1K EEPROM storage space is configured in the controller to store important parameters, data does not need to be reconfigured after power failure, the controller can automatically recover, and the automatic acquisition of the pipeline filling control right is achieved. After the data recovery is completed, the controller enters a loop execution phase. The cycle execution indicates that the controller is always in a working state and needs to complete functions of communication response, display control, motor control, data acquisition and the like.
In a particular embodiment of the present invention,
in a specific embodiment, the method further comprises the following steps: the parameter setting and mode selecting module 5 is electrically connected with the controller 1, and the parameter setting and mode selecting module 5 is used for setting an antifreeze filling time parameter and an antifreeze filling flow parameter and selecting a filling mode.
In a specific embodiment, the method further comprises the following steps:
the interface module 6 is electrically connected with the controller 1 and used for accessing equipment;
the display module 7 is electrically connected with the controller 1 and used for displaying data;
and the report module 8 is electrically connected with the controller 1, and is used for recording the filling flow of the antifreeze at regular time and forming a production report.
Example 2
The process of the embodiment of the invention is concretely applied as follows:
and (4) installing relevant equipment such as a filling pipeline pressure sensor, a temperature sensor, a liquid level height sensor and the like of the pipeline, and completing debugging.
After the installation test work is finished, the system is subjected to test operation, the whole system operates stably, and no fault occurs. The filling amount is checked to be consistent with the design value through manual spot check, the communication between the filling system and the configuration software is normal, and both the configuration parameters and the production report can be normally delivered and uploaded. During the trial operation, a temperature sampling value and a single-day injection flow value are selected for curve analysis, as shown in the attached figure 2, the temperature value shown in the figure is the temperature value uploaded by an acquisition sensor at a certain moment in the day, the injection flow is the result of a statistical report uploaded by a controller, and the error after checking is within 5%, so that the whole system can automatically control the variable frequency motor to automatically add the anti-freezing agent according to the temperature change value, the injection amount is consistent with the design value, and the system can realize uninterrupted temperature signal acquisition and dynamic injection and can completely replace field operators.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The real-time antifreeze filling method is characterized by comprising the following steps:
acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time;
and selecting a filling mode, and when the filling mode is a full-automatic mode, realizing the rotation speed adjustment of the antifreeze filling motor according to the filling pipeline environment data, the filling pipeline pressure data, the current antifreeze filling flow data, the mapping relation between the preset temperature and the filling flow and the mapping relation between the preset filling flow and the motor rotation speed, so as to complete the filling of the antifreeze.
2. The real-time antifreeze filling method according to claim 1, wherein the specific expression of the mapping relationship between the preset filling flow and the motor rotation speed is as follows:
MotpSpeed＝Ax*PumpVale*(1425/PumpMax)/ValRatio
in the formula: MotpSpeed represents the calculated motor speed value at the current temperature, Ax represents the calculated slope, pumples represents the current antifreeze flow value, pumMax represents the maximum filling flow in the full-speed range of the motor, and Valratio represents the opening value of the pump valve.
3. The real-time antifreeze filling method according to claim 1, wherein the filling mode further comprises a semi-automatic mode, and when the filling mode is the semi-automatic mode, an antifreeze filling time parameter and an antifreeze filling flow parameter are preset to complete corresponding amount of filling.
4. The method of claim 3, further comprising:
and timing the antifreeze filling flow of the semi-automatic mode and the full-automatic mode, and forming a production report.
5. The method of claim 1, wherein the filling pipe environment data comprises pipe temperature data and atmospheric temperature data.
6. A system for using the method for real-time antifreeze filling according to any one of claims 1 to 5, comprising:
the controller (1) is used for realizing the overall control function of the system;
the parameter acquisition module (2) is electrically connected with the controller (1) and is used for acquiring filling pipeline environment data, filling pipeline pressure data and current antifreeze filling flow data in real time;
the frequency converter (3), the frequency converter (3) is electrically connected with the controller (1) and is used for realizing the speed regulation;
the anti-freezing agent filling motor (4) is electrically connected with the frequency converter (3) and used for completing the filling of the anti-freezing agent according to the adjusting result of the frequency converter (3).
7. The real-time antifreeze filling system according to claim 6, further comprising: the device comprises a parameter setting and mode selecting module (5), wherein the parameter setting and mode selecting module (5) is electrically connected with the controller (1), and the parameter setting and mode selecting module (5) is used for setting an antifreeze filling time parameter and an antifreeze filling flow parameter and selecting the filling mode.
8. The real-time antifreeze filling system according to claim 6, further comprising:
the interface module (6), the said interface module (6) is connected with said controller (1) electrically, is used for inserting the apparatus;
the display module (7), the said display module (7) is connected with said controller (1) electrically, is used for revealing the data;
the report module (8) is electrically connected with the controller (1) and is used for recording the filling flow of the anti-freezing liquid at regular time and forming a production report.
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| CN202210301695.1A CN114659034A (en) | 2022-03-25 | 2022-03-25 | Real-time antifreeze filling method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076597A (en) * | 2022-06-29 | 2022-09-20 | 厚普清洁能源(集团)股份有限公司 | Filling pressure and quality determination method and filling system of filling machine |
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