CN109238413B - Method for improving measurement precision of low-temperature heating kettle static weighing system - Google Patents
Method for improving measurement precision of low-temperature heating kettle static weighing system Download PDFInfo
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- CN109238413B CN109238413B CN201810727713.6A CN201810727713A CN109238413B CN 109238413 B CN109238413 B CN 109238413B CN 201810727713 A CN201810727713 A CN 201810727713A CN 109238413 B CN109238413 B CN 109238413B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/02—Apparatus for or methods of weighing material of special form or property for weighing material of filamentary or sheet form
Abstract
The invention provides a method for improving the measurement precision of a low-temperature heating kettle static weighing system, which comprises the following steps of 1: improving a physical connecting pipeline; step 2: arranging a communication line hose into an inverted U shape; and step 3: an annular overflow plate is arranged below an overflow port of a heating medium of the low-temperature heating kettle; and 4, step 4: a plurality of overflow devices are arranged at the same height of the overflow ports of the heating medium of the low-temperature heating kettle; and 5: carrying out zero clearing calibration on the low-temperature heating kettle filled with the heating medium; step 6: calculating a correction constant K of the external factor influence of the heating kettle, and correcting the static weighing system through the correction constant; and 7: repeating the step 6 until the deviation amount of the measurement result of the static weighing system is less than 5%; the invention can lead the deviation amount of the measuring result of the static weighing system to be less than 5 percent through the improvement of the physical connecting pipeline of the low-temperature heating kettle, the improvement of the connecting cable of the communication line of the low-temperature heating kettle and the setting and correction constant of the annular overflow plate.
Description
Technical Field
The invention relates to the field of low-temperature heating kettle systems or other interlayer liquid heating systems requiring static weighing systems, in particular to a method for improving the measurement precision of a low-temperature heating kettle static weighing system.
Background
In the research and manufacture process of the low-temperature heating kettle, the measurement accuracy of the heated liquid is particularly important, and although methods such as ultrasonic liquid level detection measurement, flow meter inlet and outlet flow comparison measurement and the like are adopted, the measurement accuracy is low because the measurement result of the liquid material is influenced by poor measurement accuracy or no direct measurement data.
In order to overcome the defects of methods of ultrasonic liquid level detection measurement, flowmeter inlet and outlet flow comparison measurement and the like, a static weighing system is mostly adopted for measurement at present. However, because the liquid heating medium continuously circulates in the heating interlayer of the low-temperature heating kettle, if a static weighing system is adopted, the flow change of the interlayer liquid heating medium directly influences the measurement precision, and the measurement precision is particularly obvious in the spice heating process with high measurement precision requirement.
Therefore, the research on a set of feasible method for improving the measurement accuracy of the static weighing system of the low-temperature heating kettle is urgent.
Disclosure of Invention
The invention aims to provide a method for improving the measurement accuracy of a low-temperature heating kettle static weighing system, which can solve the problem that the measurement accuracy is directly influenced by the flow change of a liquid heating medium in a heating interlayer if a static weighing system is adopted because the liquid heating medium continuously circulates in the heating interlayer of the low-temperature heating kettle.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for improving the measurement accuracy of a static weighing system of a low-temperature heating kettle comprises the following steps:
step 1: the improved physical connecting pipeline for entering and exiting the low-temperature heating kettle specifically comprises the following steps:
step 1.1: improving a feeding pipeline of the low-temperature heating kettle: the outer feeding pipe joint of the feeding hose of the low-temperature heating kettle, the feeding hose and the feeding pipe joint of the low-temperature heating kettle are in short connection to form a straight line;
step 1.2: improve low temperature heating cauldron discharge line: an outlet material pipe joint of the low-temperature heating kettle discharge hose, the discharge hose and a low-temperature heating kettle discharge pipe joint are in short connection to form a straight line;
step 1.3: improve low temperature heating cauldron heating medium business turn over material pipeline: the layout modes of the heating medium inlet and outlet pipelines of the low-temperature heating kettle adopt a horizontal pipeline, a vertical pipeline or a horizontal and vertical combined layout mode;
step 2: arranging a communication line hose connected with the low-temperature heating kettle into an inverted U shape;
and step 3: an annular overflow plate is arranged below an overflow hole of a heating medium of the low-temperature heating kettle, the outer diameter of the annular overflow plate is matched with the inner diameter of the low-temperature heating kettle, and a plurality of overflow holes are uniformly formed in the circumferential direction of the annular overflow plate;
and 4, step 4: a plurality of overflow devices are arranged at the same height of an overflow port of the heating medium of the low-temperature heating kettle, and each overflow device comprises a plurality of overflow pipes communicated with the low-temperature heating kettle and an overflow collecting mechanism used for collecting overflow of the overflow pipes;
and 5: carrying out zero clearing calibration on the low-temperature heating kettle filled with the heating medium;
step 6: adding feed liquids which are actually weighed to be G1 kg, G2 kg and G3 kg into a feed liquid barrel of the low-temperature heating kettle in sequence in a manual adding mode, respectively reading weighing display numerical values A1 kg, A2 kg and A3 kg of a static weighing system, calculating a correction constant K of the heating kettle due to external factors through the actual weighing numerical values and deviation values of the weighing display numerical values of the static weighing system, and correcting the static weighing system through the correction constant;
and 7: and 6, repeating the step until the deviation of the measurement result of the static weighing system is less than 5%.
In the step 1.1, the feeding pipe joint of the low-temperature heating kettle is bent, and the bending angle is equal to 10 degrees.
In the step 1.2, the discharge pipe joint of the low-temperature heating kettle is bent, and the bending angle is equal to 10 degrees.
And 4, the overflow collecting mechanism comprises funnel-shaped overflow trays and overflow collecting water tanks which are correspondingly arranged below the overflow pipes, and the water outlet ends of the funnel-shaped overflow trays are communicated with the overflow collecting water tanks through pipelines.
The step 5 mainly comprises the following steps:
step 5.1: filling the heating interlayer of the low-temperature heating kettle with a heating medium until the heating medium flows out of the overflow port;
step 5.2: adding a proper amount of pure water into a material liquid barrel of the low-temperature heating kettle, starting a heating system, and continuously operating the heating system for no less than 30 minutes;
step 5.3: and after the heated liquid in the material barrel of the low-temperature heating kettle is completely emptied, carrying out zero clearing calibration on the low-temperature heating kettle filled with the heating medium.
The invention has the beneficial effects that:
according to the method for improving the measurement accuracy of the low-temperature heating kettle static weighing system, the influence of the elastic stress of the physical connecting pipeline and the communication line connecting pipeline on the static weighing system can be overcome through the improvement of the physical connecting pipeline of the low-temperature heating kettle and the improvement of the communication line connecting cable of the low-temperature heating kettle, and the accuracy of a measurement result is ensured; meanwhile, through the arrangement of the annular overflow plate, the liquid level of the heating medium interlayer can be ensured to be calm, so that the influence of liquid level fluctuation on a static weighing system is avoided; the invention utilizes a scientific calibration method to zero the static weighing system, and further can ensure that the deviation amount of the measurement result of the static weighing system is less than 5 percent through the correction constant.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic structural diagram of a feed line of the improved low temperature heating kettle of the present invention;
FIG. 3 is a schematic structural view of a discharge line of the improved low-temperature heating kettle of the present invention;
FIG. 4 is a schematic structural diagram of a communication circuit of the low-temperature heating kettle according to the present invention;
fig. 5 is a schematic structural view of the annular overflow plate of the present invention;
fig. 6 is a schematic structural view of an overflow device according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
As shown in fig. 1: the invention relates to a method for improving the measurement accuracy of a static weighing system of a low-temperature heating kettle 1, which comprises the following steps:
step 1: the improved physical connecting pipeline for entering and exiting the low-temperature heating kettle 1 specifically comprises the following steps:
step 1.1: as shown in fig. 2: improve low temperature heating cauldron 1 feed line: an outer feeding pipe joint 11 of a feeding hose 12 of the low-temperature heating kettle 1, the feeding hose 12 and a feeding pipe joint 13 of the low-temperature heating kettle 1 are short-circuited to form a straight line; the feeding pipe joint 13 of the low-temperature heating kettle 1 is bent, the bending angle is equal to 10 degrees, all feeding materials are prevented from remaining at the soft connection position of the feeding pipe, the measuring precision of the static weighing system is prevented from being influenced by material storage, and the influence of the elastic stress of the feeding hose 12 on the static weighing system can be overcome through linear layout;
step 1.2: as shown in fig. 3: improve 1 discharge line of low temperature heating cauldron: an outlet material pipe joint 21 and a discharge hose 22 of the low-temperature heating kettle 1 and a discharge pipe joint 23 of the low-temperature heating kettle 1 are in short connection to form a straight line; the discharge pipe joint 23 of the low-temperature heating kettle 1 is bent, the bending angle is equal to 10 degrees, all discharged materials are prevented from remaining at the soft connection position of the discharge pipe, the measurement precision of the static weighing system is prevented from being influenced by material storage, and the influence of the elastic stress of the discharge hose 22 on the static weighing system can be overcome by linear layout;
step 1.3: improve low temperature heating cauldron 1 heating medium business turn over material pipeline: the layout mode of the heating medium feeding and discharging pipeline of the low-temperature heating kettle 1 adopts a horizontal pipeline, a vertical pipeline or a layout mode combining the horizontal pipeline and the vertical pipeline, so that the elastic stress of the heating medium feeding and discharging pipeline can not influence the measurement precision of the static weighing system when the heating medium feeding and discharging pipeline is filled with the liquid heating medium;
step 2: as shown in fig. 4: the communication line hose connected with the low-temperature heating kettle 1 is arranged into an inverted U-shaped 31, a cable support 32 is arranged below the inverted U-shaped 31, the inverted U-shaped 31 can overcome the influence of the dead weight of a cable by using the elastic stress of the communication line, and the measurement precision of a static weighing system cannot be influenced;
and step 3: as shown in fig. 5: an annular overflow plate 41 is arranged below an overflow hole of a heating medium of the low-temperature heating kettle 1, the outer diameter of the annular overflow plate 41 is matched with the inner diameter of the low-temperature heating kettle 1, a plurality of overflow holes 42 are uniformly formed in the circumferential direction of the annular overflow plate 41, the arrangement of the annular overflow plate 41 can effectively eliminate the wave form of the liquid heating medium, meanwhile, the arrangement of the overflow holes 42 can also ensure that the liquid heating medium can freely overflow, and can also ensure that the liquid level of a heating medium interlayer is flat and static, so that the influence of liquid level fluctuation on a static weighing system is avoided;
and 4, step 4: as shown in fig. 6: a plurality of overflow devices are arranged at the same height of the overflow ports of the heating medium of the low-temperature heating kettle 1, and each overflow device comprises a plurality of overflow pipes 51 communicated with the low-temperature heating kettle 1 and an overflow collecting mechanism for collecting the overflow of the overflow pipes 51; the overflow collecting mechanism comprises funnel-shaped overflow trays 52 and overflow collecting water tanks 53 which are correspondingly arranged below the overflow pipes 51, the water outlet ends of the funnel-shaped overflow trays 52 are communicated with the overflow collecting water tanks 53 through pipelines, and the overflow collecting water tanks 53 collect overflowed heating media and can recycle the heating media, so that raw materials are saved; meanwhile, the arrangement of the plurality of overflow pipes 51 can ensure free and barrier-free overflow discharge, so that the liquid level height of the heating medium is ensured not to change due to overflow, and the overflow pipes 51 are not physically connected with the overflow collecting mechanism, so as to avoid influence on the static weighing system;
and 5: the method for zero clearing calibration of the low-temperature heating kettle 1 filled with the heating medium specifically comprises the following steps:
step 5.1: filling the heating interlayer of the low-temperature heating kettle 1 with a heating medium until the heating medium flows out of the overflow port;
step 5.2: adding a proper amount of pure water into a liquid barrel of the low-temperature heating kettle 1, starting a heating system, and continuously operating the heating system for no less than 30 minutes to ensure that insoluble gas contained in a heating medium is thoroughly removed so as to avoid the influence on the measurement precision of a static weighing system due to the change of the specific gravity formed by the heating medium;
step 5.3: after the heated liquid in the charging basket of the low-temperature heating kettle 1 is completely emptied, carrying out zero clearing calibration on the low-temperature heating kettle 1 filled with the heating medium;
step 6: adding feed liquid which is actually weighed to G1 kg, G2 kg and G3 kg into a feed liquid barrel of the low-temperature heating kettle 1 in sequence in a manual adding mode, respectively reading weighing display numerical values A1 kg, A2 kg and A3 kg of a static weighing system, calculating a heating kettle external factor influence correction constant K through the actual weighing numerical values and deviation values of the weighing display numerical values of the static weighing system, and correcting the static weighing system through the correction constant;
and 7: and 6, repeating the step until the deviation of the measurement result of the static weighing system is less than 5%.
According to the method for improving the measurement precision of the low-temperature heating kettle 1 static weighing system, the influence of the elastic stress of the physical connecting pipeline and the communication line connecting pipeline on the static weighing system can be overcome through the improvement of the physical connecting pipeline of the low-temperature heating kettle 1 and the improvement of the communication line connecting cable of the low-temperature heating kettle 1, and the precision of the measurement result is ensured; meanwhile, through the arrangement of the annular overflow plate 41, the liquid level of the heating medium interlayer can be ensured to be calm, so that the influence of liquid level fluctuation on a static weighing system is avoided; the invention utilizes a scientific calibration method to zero the static weighing system, and further can ensure that the deviation amount of the measurement result of the static weighing system is less than 5 percent through the correction constant.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A method for improving the measurement accuracy of a static weighing system of a low-temperature heating kettle is characterized by comprising the following steps:
step 1: the improved physical connecting pipeline for entering and exiting the low-temperature heating kettle specifically comprises the following steps:
step 1.1: improving a feeding pipeline of the low-temperature heating kettle: the outer feeding pipe joint of the feeding hose of the low-temperature heating kettle, the feeding hose and the feeding pipe joint of the low-temperature heating kettle are in short connection to form a straight line;
step 1.2: improve low temperature heating cauldron discharge line: an outlet material pipe joint of the low-temperature heating kettle discharge hose, the discharge hose and a low-temperature heating kettle discharge pipe joint are in short connection to form a straight line;
step 1.3: improve low temperature heating cauldron heating medium business turn over material pipeline: the layout modes of the heating medium inlet and outlet pipelines of the low-temperature heating kettle adopt a horizontal pipeline, a vertical pipeline or a horizontal and vertical combined layout mode;
step 2: arranging a communication line hose connected with the low-temperature heating kettle into an inverted U shape;
and step 3: an annular overflow plate is arranged below an overflow hole of a heating medium of the low-temperature heating kettle, the outer diameter of the annular overflow plate is matched with the inner diameter of the low-temperature heating kettle, and a plurality of overflow holes are uniformly formed in the circumferential direction of the annular overflow plate;
and 4, step 4: a plurality of overflow devices are arranged at the same height of an overflow port of the heating medium of the low-temperature heating kettle, and each overflow device comprises a plurality of overflow pipes communicated with the low-temperature heating kettle and an overflow collecting mechanism used for collecting overflow of the overflow pipes;
and 5: carrying out zero clearing calibration on the low-temperature heating kettle filled with the heating medium;
step 6: adding feed liquids which are actually weighed to be G1 kg, G2 kg and G3 kg into a feed liquid barrel of the low-temperature heating kettle in sequence in a manual adding mode, respectively reading weighing display numerical values A1 kg, A2 kg and A3 kg of a static weighing system, calculating a correction constant K of the heating kettle due to external factors through the actual weighing numerical values and deviation values of the weighing display numerical values of the static weighing system, and correcting the static weighing system through the correction constant;
and 7: and 6, repeating the step until the deviation of the measurement result of the static weighing system is less than 5%.
2. The method for improving the measurement accuracy of the static weighing system of the low-temperature heating kettle according to claim 1, wherein the method comprises the following steps: in the step 1.1, the feeding pipe joint of the low-temperature heating kettle is bent, and the bending angle is equal to 10 degrees.
3. The method for improving the measurement accuracy of the static weighing system of the low-temperature heating kettle according to claim 1, wherein the method comprises the following steps: in the step 1.2, the discharge pipe joint of the low-temperature heating kettle is bent, and the bending angle is equal to 10 degrees.
4. The method for improving the measurement accuracy of the static weighing system of the low-temperature heating kettle according to claim 1, wherein the method comprises the following steps: and 4, the overflow collecting mechanism comprises funnel-shaped overflow trays and overflow collecting water tanks which are correspondingly arranged below the overflow pipes, and the water outlet ends of the funnel-shaped overflow trays are communicated with the overflow collecting water tanks through pipelines.
5. The method for improving the measurement accuracy of the static weighing system of the low-temperature heating kettle according to claim 1, wherein the method comprises the following steps: the step 5 mainly comprises the following steps:
step 5.1: filling the heating interlayer of the low-temperature heating kettle with a heating medium until the heating medium flows out of the overflow port;
step 5.2: adding a proper amount of pure water into a material liquid barrel of the low-temperature heating kettle, starting a heating system, and continuously operating the heating system for no less than 30 minutes;
step 5.3: and after the heated liquid in the material barrel of the low-temperature heating kettle is completely emptied, carrying out zero clearing calibration on the low-temperature heating kettle filled with the heating medium.
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| CN201810727713.6A CN109238413B (en) | 2018-07-05 | 2018-07-05 | Method for improving measurement precision of low-temperature heating kettle static weighing system |
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| DE19634996C2 (en) * | 1996-08-30 | 2000-05-25 | Voith Sulzer Papiermasch Gmbh | Material density-controlled headbox with pulp consistency control |
| CN101936314A (en) * | 2010-09-29 | 2011-01-05 | 奇瑞汽车股份有限公司 | Automobile steering fluid reservoir |
| CN102229524A (en) * | 2011-04-19 | 2011-11-02 | 广西壮族自治区化工研究院 | Reaction device for synthesizing levo terpineol |
| CN203663843U (en) * | 2013-12-19 | 2014-06-25 | 菏泽瑞圣化工科技有限公司 | Novel temperature-controlled and pressure-controlled steam heating kettle |
| CN204446980U (en) * | 2014-12-18 | 2015-07-08 | 长城信息产业股份有限公司 | A kind of hose blocking-up device |
| CN204987467U (en) * | 2015-06-01 | 2016-01-20 | 河南中烟工业有限责任公司 | Novel heating cauldron |
| CN106643962A (en) * | 2016-11-18 | 2017-05-10 | 郑州格兰高环境工程有限公司 | Method for accurately calculating capacity of liquid in irregular tank |
| CN206980134U (en) * | 2017-07-20 | 2018-02-09 | 天宇利水信息技术成都有限公司 | A kind of moisturizing overflow device of evaporator |
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