CN213680038U - Circulating water automatic control system based on intelligent instrument - Google Patents

Circulating water automatic control system based on intelligent instrument Download PDF

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Publication number
CN213680038U
CN213680038U CN202022605789.7U CN202022605789U CN213680038U CN 213680038 U CN213680038 U CN 213680038U CN 202022605789 U CN202022605789 U CN 202022605789U CN 213680038 U CN213680038 U CN 213680038U
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China
Prior art keywords
control system
circulating water
corrosion inhibitor
data analysis
acid
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CN202022605789.7U
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Inventor
姜国策
李小军
杨杰利
陈玉强
杨凯
刘勇
贺凯
任坤
刘小勇
王新
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Xian Thermal Power Research Institute Co Ltd
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Xian Thermal Power Research Institute Co Ltd
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Abstract

The utility model discloses a circulating water automatic control system based on intelligent instrument, including online instrument testing arrangement, data analysis and control system, sulphuric acid (or hydrochloric acid) medicine system, antisludging agent medicine system and corrosion inhibitor medicine system etc.. The sampling tube is connected to the outlet pipeline of the circulating water pump, main monitoring indexes such as pH, alkalinity, calcium ions, hardness, chloride ions, sulfate ions and the like of circulating water are monitored through the online instrument testing device, data analysis is carried out on tested data through the data analysis and control system, and the deviation condition of the main indexes and normal control values is judged. The dosage of the sulfuric acid (or hydrochloric acid) dosing system, the scale inhibitor dosing system and the corrosion inhibitor dosing system is adjusted through a data analysis and control system.

Description

Circulating water automatic control system based on intelligent instrument
Technical Field
The utility model belongs to the technical field of the water treatment, a circulating water automatic control system based on intelligent instrument is related to.
Background
At present, a circulating water system of a thermal power plant is mainly used for preventing scaling and corrosion of a condenser system and a pipeline system through regulating water quality. The conventional operation is to add acid into the circulating water to adjust the alkalinity and the pH value, add scale inhibitor to inhibit scale and add corrosion inhibitor to prevent the corrosion of the system. Usually, acid, scale inhibitor and corrosion inhibitor are added in a fixed amount, the reaction on the change of the water quality of circulating water make-up water is slow, and the dosage cannot be adjusted in time, so that the problems of scaling and corrosion of a system are caused.
The water quality of the existing circulating water is manually tested in a laboratory, and the control mode of the circulating water is adjusted according to the test result. The manual test cannot timely reflect the water quality change of the circulating water make-up water, so that the control of the circulating water is delayed. Once the condition of water quality mutation of circulating water make-up water occurs, the supervision means cannot react in time, and the test result of a laboratory needs to be fed back to an operator to adjust and change the dosage.
Therefore, a real-time automatic control system for circulating water needs to be developed, which can timely adjust the dosing amount of the circulating water and ensure the stable operation of a circulating water system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the existing circulating water treatment system can not adjust the dosage in time and can not deal with the water quality change of circulating water make-up water in time, and provide a circulating water automatic control system based on intelligent instrument.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
the utility model provides a circulating water automatic control system based on smart meter, includes:
the online instrument testing device is communicated with an outlet pipeline of the circulating water pump through a sampling pipe;
the data analysis and control system is connected with the online instrument testing device and is used for analyzing various indexes of the current circulating water collected by the online instrument testing device;
and the dosing system is connected with the data analysis and control system, and adds acid, scale inhibitor or corrosion inhibitor into the circulating water pipeline under the control of the data analysis and control system.
The utility model discloses further improvement lies in:
the online instrument testing device comprises a water sample filtering device and a testing device, and the testing device transmits a testing result to the data analysis and control system.
The chemical feeding system comprises an acid adjusting device, a scale inhibitor adjusting device and a corrosion inhibitor adjusting device, wherein the acid adjusting device, the scale inhibitor adjusting device and the corrosion inhibitor adjusting device are respectively communicated with the circulating water system through chemical feeding pipelines; the acid regulating device, the scale inhibitor regulating device and the corrosion inhibitor regulating device are all electrically connected with the data analysis and control system.
The acid adjusting device, the scale inhibitor adjusting device and the corrosion inhibitor adjusting device have the same structure and respectively comprise a medicine storage device, a medicine metering box, a dosing pump and an electromagnetic valve.
The electromagnetic valves of the acid regulating device, the scale inhibitor regulating device and the corrosion inhibitor regulating device are respectively connected with the data analysis and control system, and the data analysis and control system controls the start and stop of the system.
The medicine in the acid regulating device is sulfuric acid or hydrochloric acid.
The corrosion inhibitor in the corrosion inhibitor adjusting device is a copper corrosion inhibitor, a carbon steel corrosion inhibitor or a stainless steel corrosion inhibitor.
A circulating water automatic control method based on an intelligent instrument comprises the following steps:
when the pH value and the alkalinity of the circulating water are monitored to rise, starting an acid adjusting system or increasing the dosage of a scale inhibitor adjusting device to enable the pH value or the alkalinity of the circulating water to reach a preset value;
when the pH value and the alkalinity of the circulating water are monitored to be reduced, the dosing amount of the acid adjusting system is reduced or the acid adjusting system is closed, and the dosing amount of the corrosion inhibitor adjusting device is increased, so that the pH value or the alkalinity of the circulating water reaches a preset value;
when the content of chloride ions or sulfate ions is monitored to be increased, the dosage of the corrosion inhibitor adjusting device is increased, so that the content of the chloride ions or the sulfate ions in the circulating water reaches a preset value;
when the monitored calcium ions or hardness increase, the dosage of the scale inhibitor adjusting device is increased, so that the calcium ion content or hardness of the circulating water reaches a preset value.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses carry out the operational control of circulating water based on online instrument, through the real-time supervision test to the main quality of water index of circulating water, in time know the quality of water change of circulating water.
Further, monitoring the pH and alkalinity rise, starting an acid adding system and properly increasing the adding amount of the scale inhibitor.
Furthermore, the pH value and the alkalinity of the supervision result are obviously reduced, the addition of sulfuric acid (or hydrochloric acid) is reduced or an acid adding system is stopped, and the adding amount of the corrosion inhibitor is properly increased.
Furthermore, the content of chloride ions or sulfate ions is increased in the supervision result, and the addition amount of special corrosion inhibitors such as carbon steel corrosion inhibitors or stainless steel corrosion inhibitors is properly increased.
Furthermore, the calcium ion or hardness is increased, and the dosage of the scale inhibitor is properly increased.
The adjustment of the dosage needs to be controlled according to the actual operation parameters of the circulating water of the power plant.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a system according to the present invention.
Wherein, 1, the online instrument testing device; 2, a data analysis and control system; 3 is an acid regulating device; 4 is a scale inhibitor adjusting device; and 5, a corrosion inhibitor adjusting device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the product of the present invention is usually placed when in use, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the utility model discloses a circulating water automatic control system based on intelligent instrument, including online instrument testing arrangement 1, data analysis and control system 2 and medicine system; the online instrument testing device 1 is communicated with an outlet pipeline of the circulating water pump through a sampling pipe; the data analysis and control system 2 is electrically connected with the online instrument testing device 1 and is used for analyzing various indexes of the current circulating water collected by the online instrument testing device 1; the dosing system is electrically connected with the data analysis and control system 2, and acid, scale inhibitor or corrosion inhibitor is added into the circulating water pipeline under the control of the data analysis and control system 2. The online instrument testing device 1 comprises a water sample filtering device and a testing device, and the testing device transmits a testing result to the data analysis and control system 2. The dosing system comprises an acid adjusting device 3, a scale inhibitor adjusting device 4 and a corrosion inhibitor adjusting device 5, wherein the acid adjusting device 3, the scale inhibitor adjusting device 4 and the corrosion inhibitor adjusting device 5 are respectively communicated with the circulating water system through dosing pipelines; the acid adjusting device 3, the scale inhibitor adjusting device 4 and the corrosion inhibitor adjusting device 5 are all electrically connected with the data analysis and control system 2. The acid adjusting device 3, the scale inhibitor adjusting device 4 and the corrosion inhibitor adjusting device 5 have the same structure and respectively comprise a medicine storage device, a medicine metering box, a dosing pump and an electromagnetic valve. The electromagnetic valves of the acid regulating device 3, the scale inhibitor regulating device 4 and the corrosion inhibitor regulating device 5 are respectively connected with the data analysis and control system 2, and the start and stop of the data analysis and control system 2 are controlled. The medicine in the acid regulating device 3 is sulfuric acid or hydrochloric acid. The corrosion inhibitor in the corrosion inhibitor adjusting device 5 is a carbon steel corrosion inhibitor or a stainless steel corrosion inhibitor.
The utility model discloses a principle and working process:
the utility model discloses connect the sampling tube on circulating water pump outlet pipeline, monitor through main monitoring index such as pH, basicity, calcium ion, hardness, chloride ion, sulfate ion of on-line instrument testing arrangement 1 to the circulating water, the data that the test was come out carries out data analysis through data analysis and control system 2 to judge the skew condition of main index and normal control numerical value. The dosage of the acid regulating device 3, the scale inhibitor regulating device 4 and the corrosion inhibitor regulating device 5 is adjusted through the data analysis and control system 2.
The utility model discloses an operation control of circulating water is carried out based on online instrument, through the real-time supervision test to the main quality of water index of circulating water, in time knows the quality of water change of circulating water.
By monitoring the rising of the pH value and the alkalinity of the circulating water, an acid adjusting device is started or the dosage of the scale inhibitor is properly increased.
By monitoring the obvious reduction of the pH value and the alkalinity of the circulating water, the addition of sulfuric acid (or hydrochloric acid) is reduced or an acid adjusting device is stopped, and the addition amount of the corrosion inhibitor is properly increased.
The monitoring result shows that the content of chloride ions or sulfate ions is increased, and the addition amount of special corrosion inhibitors such as carbon steel corrosion inhibitors or stainless steel corrosion inhibitors is properly increased.
The monitoring result shows that the calcium ions or the hardness is increased, and the dosage of the scale inhibitor is properly increased.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a circulating water automatic control system based on smart meter which characterized in that includes:
the online instrument testing device (1) is communicated with an outlet pipeline of the circulating water pump through a sampling pipe;
the data analysis and control system (2) is connected with the online instrument testing device (1) and is used for analyzing various indexes of the current circulating water collected by the online instrument testing device (1);
and the dosing system is connected with the data analysis and control system (2), and adds acid, scale inhibitor or corrosion inhibitor into the circulating water pipeline under the control of the data analysis and control system (2).
2. The automatic circulating water control system based on the intelligent instrument as claimed in claim 1, wherein the online instrument testing device (1) comprises a water sample filtering device and a testing device, and the testing device transmits a testing result to the data analysis and control system (2).
3. The circulating water automatic control system based on the intelligent instrument as claimed in claim 1, wherein the dosing system comprises an acid adjusting device (3), a scale inhibitor adjusting device (4) and a corrosion inhibitor adjusting device (5), and the acid adjusting device (3), the scale inhibitor adjusting device (4) and the corrosion inhibitor adjusting device (5) are respectively communicated with the circulating water system through dosing pipelines; the acid regulating device (3), the scale inhibitor regulating device (4) and the corrosion inhibitor regulating device (5) are all electrically connected with the data analysis and control system (2).
4. The automatic circulating water control system based on the intelligent instrument as claimed in claim 3, wherein the acid regulating device (3), the scale inhibitor regulating device (4) and the corrosion inhibitor regulating device (5) have the same structure and comprise a medicine storage device, a medicine metering tank, a dosing pump and an electromagnetic valve.
5. The circulating water automatic control system based on the intelligent instrument as claimed in claim 4, wherein the electromagnetic valves of the acid regulating device (3), the scale inhibitor regulating device (4) and the corrosion inhibitor regulating device (5) are respectively connected with the data analysis and control system (2), and the data analysis and control system (2) controls the start and stop of the system.
6. A circulating water automatic control system based on intelligent instrument according to any one of claims 3-5, characterized in that the medicine in the acid adjusting device (3) is sulfuric acid or hydrochloric acid.
7. A circulating water automatic control system based on intelligent instrument according to any one of claims 3-5, characterized in that the corrosion inhibitor in the corrosion inhibitor adjusting device (5) is copper corrosion inhibitor, carbon steel corrosion inhibitor or stainless steel corrosion inhibitor.
CN202022605789.7U 2020-11-11 2020-11-11 Circulating water automatic control system based on intelligent instrument Active CN213680038U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022605789.7U CN213680038U (en) 2020-11-11 2020-11-11 Circulating water automatic control system based on intelligent instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022605789.7U CN213680038U (en) 2020-11-11 2020-11-11 Circulating water automatic control system based on intelligent instrument

Publications (1)

Publication Number Publication Date
CN213680038U true CN213680038U (en) 2021-07-13

Family

ID=76731347

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022605789.7U Active CN213680038U (en) 2020-11-11 2020-11-11 Circulating water automatic control system based on intelligent instrument

Country Status (1)

Country Link
CN (1) CN213680038U (en)

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