CN113551842A - Method and system for detecting leakage of annealing furnace water cooling equipment on line - Google Patents
Method and system for detecting leakage of annealing furnace water cooling equipment on line Download PDFInfo
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- CN113551842A CN113551842A CN202110698003.7A CN202110698003A CN113551842A CN 113551842 A CN113551842 A CN 113551842A CN 202110698003 A CN202110698003 A CN 202110698003A CN 113551842 A CN113551842 A CN 113551842A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a method for detecting leakage of annealing furnace water cooling equipment on line, which comprises the following steps: s1, maintaining the furnace pressure of the annealing furnace at 2.0-3.5 mbar; s2, selecting or increasing a sampling point between the water cooling equipment and the annealing furnace; s3, connecting the portable dew point instrument at the sampling point, and keeping the connection state for a period of time; s4, recording and counting the numerical value on the portable dew point instrument; s5, judging whether the water cooling equipment leaks or not according to the numerical value on the portable dew point instrument, wherein the detected dew point value is higher than the highest rated value, which indicates that the water cooling equipment leaks, and the higher the dew point value is, which indicates that the water cooling equipment leaks more seriously, the detected dew point value is lower than the lowest rated value, which indicates that the water cooling equipment does not leak; the minimum rated value is smaller than the maximum rated value, the method is different from a conventional pressure test method, whether the water cooling equipment leaks or not is judged quickly and accurately by using the portable dew point instrument, and the defects of the equipment are found in time, so that the product quality is improved, and the labor and material cost is saved.
Description
Technical Field
The invention relates to the technical field of galvanized wire production and processing, in particular to a method and a system for detecting leakage of annealing furnace water cooling equipment on line.
Background
The TKAS galvanizing line annealing furnace has more water cooling equipment, and in the operation process of a production line, after atmosphere abnormity or product defects of the annealing furnace are caused by leakage of the water cooling equipment, the water cooling equipment needs to be pressed one by one after furnace shutdown for inspection. For example, in 2016, due to the defect of plating leakage of products, the company stops the furnace to carry out a pressing test on 108 water cooling equipment of the annealing furnace (the pressing test is to carry out a hydraulic pressure test on a water cooling jacket so as to judge whether the water cooling equipment leaks), the time is about 16 days, and a large amount of manpower and material resources are consumed. Therefore, how to rapidly detect whether the water cooling equipment leaks or not under the condition that the annealing furnace is not stopped is an urgent problem to be solved.
Disclosure of Invention
In order to solve the technical problem, the embodiment of the invention provides a method for detecting leakage of annealing furnace water cooling equipment on line, which comprises the following steps:
s1, maintaining the furnace pressure of the annealing furnace at 2.0-3.5mbar, wherein in practical use, the furnace pressure in the annealing furnace only needs to be stabilized at any value within the range of 2.0-3.5mbar, for example, the furnace pressure is stabilized at 2.2mbar, so that measurement errors caused by furnace pressure fluctuation to the portable dew point meter are avoided;
s2, selecting or increasing a sampling point between the water cooling equipment and the annealing furnace;
s3, connecting the portable dew point instrument at the sampling point, and keeping the connection state for a period of time;
s4, recording and counting the numerical value on the portable dew point instrument;
and S5, judging whether the water cooling equipment leaks or not according to the numerical value on the portable dew point instrument.
In at least one preferred embodiment, in S5, the detected dew point value is higher than the highest rated value, indicating that the water cooling equipment leaks, and the higher the dew point value, indicating that the water cooling equipment leaks more seriously;
the detected dew point value is lower than the lowest rated value, which indicates that the water cooling equipment is not leaked;
the lowest rating is less than the highest rating.
In at least one preferred embodiment, the maximum rating is-10 ℃ and the minimum rating is-35 ℃.
In at least one preferred embodiment, in S3, the sampling time of the portable dew point instrument at the sampling point is more than 2min, so as to ensure the stability of the sampling data.
In at least one preferred embodiment, the portable dew point meter checks its self-sealing by a standard gas before use.
In at least one preferred embodiment, the annealing furnace is connected in series with a plurality of furnace rollers, water cooling equipment is arranged on both sides of each furnace roller, a plurality of sampling points are arranged on the water cooling equipment, and when the dew point value of each sampling point is lower than the lowest rated value, the water cooling equipment is indicated to be not leaked.
The utility model provides a system for on-line measuring annealing stove water-cooling equipment leaks, includes a plurality of sampling points, portable dew point hygrometer and data processing platform, portable dew point hygrometer with data processing platform wireless/wired connection, data processing platform is used for receiving and handling the dew point value of a plurality of sampling points.
In at least one preferred embodiment, the data processing platform records a plurality of dew point values (a1, a2, a3, …, an), and compares the values of (a1, a2, a3, …, an) to obtain a maximum value a (max), when a (max) is higher than the highest rated value, the data processing platform controls an alarm to alarm, so that staff is prompted that the water cooling equipment leaks, and when a (max) is lower than the lowest rated value, the water cooling equipment is indicated as not leaking.
The invention has the beneficial effects that:
the invention is different from the conventional pressure testing method, and utilizes the portable dew point instrument to quickly and accurately judge whether the water cooling equipment leaks or not and find the defects of the equipment in time, thereby improving the product quality and saving the cost of manpower and material resources.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used merely for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
The invention provides a method for detecting leakage of annealing furnace water cooling equipment on line, which comprises the following steps:
s1, maintaining the furnace pressure of the annealing furnace at 2.0-3.5mbar, wherein in practical use, the furnace pressure in the annealing furnace only needs to be stabilized at any value within the range of 2.0-3.5mbar, for example, 2.0mbar, 2.2mbar, 2.4mbar, 2.5mbar, 2.6mbar,3.1mbar and 3.3mbar can be satisfied;
s2, selecting or increasing a sampling point between the water cooling equipment and the annealing furnace;
s3, accessing the portable dew point instrument at the sampling point, and keeping the access state for a period of time, wherein the sampling time of the portable dew point instrument at the sampling point is more than 2min, so that the stability of the sampled data is ensured, and in actual use, the sampling time of the portable dew point instrument at the sampling point is too short, so that the detected data is inaccurate, and the final judgment is influenced;
s4, recording and counting the numerical value on the portable dew point instrument;
s5, judging whether the water cooling equipment leaks or not according to the numerical value on the portable dew point instrument, wherein the dew point value detected by the portable dew point instrument is higher than the highest rated value, which indicates that the water cooling equipment leaks, and the higher the dew point value is, the more serious the water cooling equipment leaks;
the detected dew point value is lower than the lowest rated value, which indicates that the water cooling equipment is not leaked;
the lowest rating is less than the highest rating.
In some preferred embodiments, the maximum rating is-10 ℃ and the minimum rating is-35 ℃.
In certain preferred embodiments, in order to avoid the drawbacks of the portable dew point instrument itself, the portable dew point instrument itself is checked for tightness by a standard gas before use.
In some preferred embodiments, the annealing furnace is connected in series with a plurality of furnace rollers, both sides of the furnace rollers are provided with water cooling devices, a plurality of sampling points are arranged on the water cooling devices, and when the dew point value of each sampling point is lower than the minimum rated value, the fact that the water cooling devices connected with the annealing furnace of the entire TKAS galvanizing line are not leaked is indicated.
The working principle of the invention is as follows: if the water cooling equipment leaks water, due to the fact that the temperature in the annealing furnace is high, gaseous water is increased after water is evaporated, a dew point value can be detected through the portable dew point meter (moisture-containing gas passes through a moisture absorption material in the instrument, water is absorbed, and the inside of the instrument is compared through a sensor to display the dew point value), if the water cooling equipment leaks water, the dew point value detected by the portable dew point meter is larger than-10 ℃, wherein the larger the dew point value is, the more serious the water seepage is, and the more serious the influence on the product quality is; if the portable dew point meter detects a dew point value of less than-35 deg.C, it indicates that no leakage has occurred.
The system comprises a plurality of sampling points, a portable dew point meter and a data processing platform, wherein the portable dew point meter is in wireless/wired connection with the data processing platform, the data processing platform is used for receiving and processing dew point values of the plurality of sampling points, the data processing platform records a plurality of dew point values (a1, a2, a3, … and an), and compares the dew point values (a1, a2, a3, … and an) to obtain a maximum value a (max), when the a (max) is higher than the highest rated value, the data processing platform controls an alarm to give an alarm, so that a worker is prompted that water cooling equipment leaks, and when the a (max) is lower than the lowest rated value, the water cooling equipment does not leak, and the alarm does not give an alarm.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (8)
1. The method for detecting the leakage of the annealing furnace water cooling equipment on line is characterized by comprising the following steps of:
s1, maintaining the furnace pressure of the annealing furnace at 2.0-3.5 mbar;
s2, selecting or increasing a sampling point between the water cooling equipment and the annealing furnace;
s3, connecting the portable dew point instrument at the sampling point, and keeping the connection state for a period of time;
s4, recording and counting the numerical value on the portable dew point instrument;
and S5, judging whether the water cooling equipment leaks or not according to the numerical value on the portable dew point instrument.
2. The method for detecting the leakage of the annealing furnace water cooling equipment on line according to the claim 1, characterized in that: in S5, the detected dew point value is higher than the maximum rated value, which indicates that the water cooling equipment leaks, and the higher the dew point value, the more serious the water cooling equipment leaks;
the detected dew point value is lower than the lowest rated value, which indicates that the water cooling equipment is not leaked;
the lowest rating is less than the highest rating.
3. The method for detecting the leakage of the annealing furnace water cooling equipment on line according to the claim 2 is characterized in that: the maximum rated value is-10 ℃ and the minimum rated value is-35 ℃.
4. The method for detecting the leakage of the annealing furnace water cooling equipment on line according to the claim 1, characterized in that: in S3, the sampling time of the portable dew point instrument at the sampling point is more than 2min, and the stability of the sampling data is ensured.
5. The method for detecting the leakage of the annealing furnace water cooling equipment on line according to the claim 1, characterized in that: the portable dew point meter is used for checking the self tightness through the standard gas.
6. The method for detecting the leakage of the annealing furnace water cooling equipment on line according to the claim 2 is characterized in that: the annealing stove is established ties and is had a plurality of stove rollers, and stove roller both sides all are equipped with water cooling equipment, the sampling point is equipped with a plurality ofly and establishes on these water cooling equipment, and when the dew point value of every sampling point all was less than minimum rated value, it did not reveal to show water cooling equipment.
7. The utility model provides a system for on-line measuring annealing stove water-cooling equipment leaks which characterized in that: the portable dew point instrument is in wireless/wired connection with the data processing platform, and the data processing platform is used for receiving and processing dew point values of the sampling points.
8. The system for on-line detection of the leakage of the annealing furnace water cooling equipment according to claim 7, is characterized in that: the data processing platform records a plurality of dew point values (a1, a2, a3, … and an), compares the values of (a1, a2, a3, … and an) to obtain a maximum value a (max), controls the alarm to give an alarm when the a (max) is higher than the highest rated value, so as to prompt staff to leak the water cooling equipment, and indicates that the water cooling equipment does not leak when the a (max) is lower than the lowest rated value.
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| CN202110698003.7A CN113551842B (en) | 2021-06-23 | 2021-06-23 | Method and system for online detection of leakage of annealing furnace water cooling equipment |
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| CN202110698003.7A CN113551842B (en) | 2021-06-23 | 2021-06-23 | Method and system for online detection of leakage of annealing furnace water cooling equipment |
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