CN207557162U - A kind of device for being used to measure turbulence acid dip end time - Google Patents
A kind of device for being used to measure turbulence acid dip end time Download PDFInfo
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- CN207557162U CN207557162U CN201721390294.9U CN201721390294U CN207557162U CN 207557162 U CN207557162 U CN 207557162U CN 201721390294 U CN201721390294 U CN 201721390294U CN 207557162 U CN207557162 U CN 207557162U
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Abstract
The utility model discloses a kind of for measuring the device of turbulence acid dip end time, including：Pickling channel with entrance and exit, is equipped with steel plate sample in the pickling channel；Acid tank is stored up, entrance is connect by entrance pipe with the outlet of pickling channel, and the outlet of the storage acid tank is connect by export pipeline with the entrance of pickling channel, and the entrance pipe or export pipeline are equipped with flowmeter；Reference electrode, test lead are set in the pickling channel, and the reference electrode measures the potential value of acid solution in pickling channel；Working electrode is contacted with the surface of steel plate sample, and the working electrode measures the potential value on steel plate sample surface.The device is by measuring the current potential between steel plate and acid solution, turbulence acid dip end time is obtained according to potential curve, the device applicable elements are wide, can be used for measuring the turbulence acid dip end time of the pickling solution lower steel plate of various concentration, different temperatures and different turbulence intensities.
Description
Technical field
The utility model is related to a kind of measuring device more particularly to a kind of measuring devices applied to turbulence acid dip.
Background technology
Acid cleaning process is exactly the process for removing belt steel surface iron scale.Therefore, pickling time depends primarily on iron oxide
The structure and thickness of skin.However, due to belt steel surface iron scale because hot-rolled steel chemical composition, rolling when belt steel surface
Heating and finishing temperature, the oxygen content of cooling velocity and surrounding medium when temperature, rolling is different, causes the group of iron scale
It is also differed into structure.Therefore, hot-strip acid cleaning process usually using turbulence acid dip method.
Turbulence acid dip is that the acid solution of heating is squeezed into descaling bath by acid circulating pump, is sprayed by entrance, exports injection, is intermediate
Injection forms turbulent flow with special acidic bath cover and strip speed.It is generated when acid solution is by the strip moved in acid solution and pickling
Hydrogen is stirred.The acid solution of belt steel surface contact is constantly updated, and the reaction speed of iron scale and acid is promoted to accelerate, shortens pickling
Time.
The turbulence intensity of belt steel surface is an important factor for influencing pickling efficiency, and the raising of surface turbulence degree can be carried substantially
High pickling speed, and it is proportional in descaling bath belt steel surface turbulence level and strip movement velocity, it is thus determined that difference
The pickling time of strip under turbulence intensity is significantly.
And it is current, the judgment method about static pickling time terminal has had a large amount of scholars to be ground in the prior art
Study carefully, but lack the method for judging turbulence acid dip end time.Although potential measurement, which is one kind, can accurately judge acid
The method for washing the time of end.But strip high-speed cruising during due to turbulence acid dip in process of factory production, it is difficult to movement
In strip carry out pickling current potential measurement.
Therefore, turbulence acid dip end time how is obtained for strip pickling process important in inhibiting, is obtained accurate
Turbulence acid dip end time not only contributes to correspond to different strip adjusting suitable speed during production, avoids overpickling phenomenon
Appearance, and be effectively improved production efficiency, optimize the technological process of production.
Utility model content
The purpose of this utility model is to provide a kind of for measuring the device of turbulence acid dip end time, which passes through
The current potential between steel plate and acid solution is measured, turbulence acid dip end time is obtained according to potential curve, the device applicable elements are wide, can be with
For measuring the turbulence acid dip end time of the pickling solution lower steel plate of various concentration, different temperatures and different turbulence intensities.
In addition, acid washing conditions when the device simulates turbulence acid dip well, are conducive to optimize steel plate such as hot-rolled carbon steel production process
In pickling parameter, there is guiding effect to the adjustment of pickling parameter.
In order to achieve the purpose that above-mentioned utility model, the utility model provides a kind of whole for measuring the turbulence acid dip time
The device of point, including：
Pickling channel with entrance and exit, is equipped with steel plate sample in the pickling channel；
Acid tank is stored up, entrance is connect by entrance pipe with the outlet of pickling channel, and the outlet of the storage acid tank passes through
Mouth pipeline is connect with the entrance of pickling channel, and the entrance pipe or export pipeline are equipped with flowmeter；
Reference electrode, test lead are set in the pickling channel, and the reference electrode measures acid solution in pickling channel
Potential value；
Working electrode is contacted with the surface of steel plate sample, and the working electrode measures the potential value on steel plate sample surface.
Since acid cleaning process is really an electrochemical process, the steel plate with iron scale occurs in pickling solution pickling
A series of electrochemical reactions, and generated electrochemical reaction is different in the different stages, therefore, in the utility model
Using the potential value for measuring acid solution and steel plate sample surface in the device, the potential value difference of the two is calculated, so as to
The electromotive force situation of change in acid cleaning process is solved, and is no longer changed according to electromotive force to judge whether pickling terminates.
It is described in the utility model to use acid for measuring the device of turbulence acid dip end time based on above-mentioned reaction principle
It washes channel and turbulence acid dip is carried out to steel plate, by recording the electricity measured by reference electrode and working electrode at interval of a period of time
Place value calculates the potential value difference of the two, so as to understand the variation of the electromotive force in acid cleaning process, when electromotive force no longer changes,
Represent that pickling terminates, the time recorded at this time is turbulence acid dip end time.
In said program, flowmeter is used to measure the flow of pickling solution, so as to calculate the turbulence intensity in pickling channel.
For storing certain density pickling solution in storage acid tank, the concentration of pickling solution can be according to the concrete condition of each embodiment
It is allocated.
It should be noted that in technical solution described in the utility model, steel plate sample surface and working electrode contact
Point can be cleaned in advance using pickling solution, to remove the iron scale on the aspect, in order to electrode measurement.
Further, in order to simulative optimization of the device for different pickling parameters is better achieved for example for temperature parameter
Simulative optimization, in device described in the utility model, it is described storage acid tank in be equipped with heater.
Further, in device described in the utility model, the heater is connect with temperature control device.
Further, in device described in the utility model, the export pipeline is equipped with pump and valve at least within
One of.
In said program, pump and valve are conducive to control the turbulence intensity of pickling solution.
Further, in device described in the utility model, thermocouple is equipped in the pickling channel.
In said program, thermocouple can be used for measuring and record the temperature of the pickling solution in pickling channel.
Further, in device described in the utility model, the reference electrode and working electrode with electrochemistry work
Make station connection.
In said program, using connecting the electricity that is conducive to monitor reference electrode and working electrode in real time with electrochemical workstation
Place value, and can be in order to draw potential change curve, so as to preferably judge turbulence acid dip end time.
Further, in device described in the utility model, the pickling channel is by the first fixture and the second fixture shape
Into wherein the first fixture inner surface has the groove of accommodating steel plate sample.
Further, in device described in the utility model, between the inner surface of the steel plate sample and the first fixture
Equipped with gasket, the working electrode is set between gasket and steel plate sample.
It can realize that different turbulent flows are strong using described in the utility model for measuring the device of turbulence acid dip end time
The judgement of the strip turbulence acid dip time of pickling solution under degree, under various concentration and different temperatures.In addition, the utility model institute
The device stated can be very good acid washing conditions during simulation turbulence acid dip, be conducive to optimize in steel plate such as hot-rolled carbon steel production process
Pickling parameter, there is guiding effect to the adjustment of pickling parameter.
Description of the drawings
Fig. 1 is the device described in the utility model for being used to measure turbulence acid dip end time under a kind of embodiment
Structure diagram.
Fig. 2 is the device described in the utility model for being used to measure turbulence acid dip end time under a kind of embodiment
Pickling potential curve figure.
Fig. 3 is the device described in the utility model for being used to measure turbulence acid dip end time under another embodiment
Pickling potential curve figure.
Specific embodiment
When will measure turbulence acid dip to described in the utility model according to specific embodiment and Figure of description below
Between the device of terminal be described further, but the explanation does not form the improper restriction to technical solutions of the utility model.
Fig. 1 is the device described in the utility model for being used to measure turbulence acid dip end time under a kind of embodiment
Structure diagram.
As shown in Figure 1, present embodiment includes pickling channel 18, storage for measuring the device of turbulence acid dip end time
Acid tank 1, reference electrode 13 and working electrode 14.
Wherein, the entrance of storage acid tank 1 is connect by entrance pipe with the pickling channel outlet 17 of pickling channel 18, stores up acid tank
1 outlet is connect by export pipeline with pickling feeder connection 16, and flow control valve 4,5 and of acid pump are equipped on export pipeline
Flowmeter 6, the pickling solution being stored in acid tank 1 are pumped by acid pump 5 in pickling channel 18, and flowmeter 6 is used to measure acid
The flow of dilution, flow control valve 4 are used to control the flow of pickling solution in 0~300ml/s, and pickling solution is tried with steel plate
After sample 9 carries out pickling, it is back in storage acid tank 1 from entrance pipe.Drain tap 15 is equipped on the entrance pipe of storage acid tank 1,
For discharging the gas in pickling channel 18.In the present embodiment, export pipeline is equipped with flowmeter 6, and flowmeter 6 is used to survey
Measure the flow of pickling solution.It should be noted that in other embodiments, flowmeter 6 can also be set on entrance pipe.
In addition, in order to control the temperature of pickling solution, the bottom of storage acid tank 1 is equipped with heater 2, and heater 2 is filled with temperature control
Put 3 connections.
Steel plate sample 9 is equipped in pickling channel 18, pickling channel 18 is formed by the first fixture 8 and the second fixture 7, the first folder
Have the groove that 8 inner surfaces have accommodating steel plate sample 9, and gasket is equipped between the inner surface of 9 and first fixture 8 of steel plate sample
10, working electrode 14 is set between gasket 10 and steel plate sample 9.In addition, thermocouple 11, thermocouple 18 are equipped in pickling channel 18
For measuring and recording the temperature of the pickling solution in pickling channel 18.
And the test lead of reference electrode 13 is set in pickling channel 18, it is molten that reference electrode 13 measures pickling in pickling channel 18
The potential value of liquid, and working electrode 14 is contacted with the surface of steel plate sample 9, working electrode 14 is used to measure 9 surface of steel plate sample
Potential value.Reference electrode 13 and working electrode 14 are connect with electrochemical workstation 12.
It should be noted that in technical solution described in the utility model, 9 surface of steel plate sample connects with working electrode 14
Tactile point can be cleaned using hydrochloric acid solution in advance, to remove the iron scale on the aspect, in order to electrode measurement.
Fig. 1 schematically shows the structure of the technical program.Fig. 2 and Fig. 3 then shows in each embodiment and is used for
Design parameter and its implementation result used by the device of measurement turbulence acid dip end time.Fig. 2 is described in the utility model
For measuring a kind of pickling potential curve figure of the device of turbulence acid dip end time under embodiment.
As shown in Fig. 2, the apparatus structure in present embodiment can be heated a concentration of 8% hydrochloric acid solution with reference chart 1
To 75 DEG C, start acid pump 5, while start electrochemical operation 12 and test a steel plate sample 9 every 1s during pickling carries out
With the potential value of hydrochloric acid solution in pickling channel 18, the potential value difference V of the two is recordedn, and draw potential value difference at any time
Between change function curve, and dVnFor potential value difference VnWith pickling time variation function derived function curve, when dVn be equal to zero or
During close to zero, the time corresponding to the point is believed that pickling time terminates.It can know with reference to figure 2, the acid in present embodiment
The end time is washed as 60s.
Furthermore, it is necessary to illustrate, the turbulence intensity I in pickling channel 18 is 10%, and turbulence intensity I can be according to formula
I=0.0667q+1.953, which is calculated, to be obtained, wherein, I represents turbulence intensity, unit % in formula, and q represents that flowmeter 6 measures
Hydrochloric acid flow number, unit ml/s.Steel plate sample 9 is using 1180MPa high-strength steel.
Fig. 3 is the device described in the utility model for being used to measure turbulence acid dip end time under another embodiment
Pickling potential curve figure.
As shown in figure 3, the apparatus structure in present embodiment can be heated a concentration of 8% hydrochloric acid solution with reference chart 1
To 75 DEG C, start acid pump 5, while start electrochemical operation 12 and test a steel plate sample 9 every 1s during pickling carries out
With the potential value of hydrochloric acid solution in pickling channel 18, the potential value difference V of the two is recordedn, and draw potential value difference at any time
Between change function curve, and dVnFor potential value difference VnWith pickling time variation function derived function curve, when dVn be equal to zero or
During close to zero, the time corresponding to the point is believed that pickling time terminates.It can know with reference to figure 3, the acid in present embodiment
The end time is washed as 40s.
Furthermore, it is necessary to explanation, in this embodiment, the turbulence intensity I in pickling channel 18 are 17%, numerical value
The turbulence intensity I that can refer to Fig. 2 is obtained, steel plate sample 9 is using 1180MPa high-strength steel.
With reference to Fig. 2 and embodiment shown in Fig. 3 can be seen that improve turbulence intensity I can contribute to shorten pickling when
Between.
It it can thus be seen that can be real using the device described in the utility model for being used to measure turbulence acid dip end time
Under existing different turbulence intensities, the judgement of the strip turbulence acid dip time of various concentration and the pickling solution under different temperatures.In addition,
Device described in the utility model can be very good acid washing conditions during simulation turbulence acid dip, be conducive to optimize steel plate such as hot rolling carbon
Pickling parameter in steel production process has guiding effect to the adjustment of pickling parameter.
It should be noted that prior art part is not limited to present specification institute in the scope of protection of the utility model
The embodiment provided, all prior arts not contradicted with the embodiment of the utility model, including but not limited to first patent
Document, first public publication, formerly openly use etc., it can all be included in the scope of protection of the utility model.
In addition, it should also be noted that, institute in the combination of each technical characteristic and unlimited this case claim in this case
Combination recorded in the combination or specific embodiment of record, all technical characteristics recorded in this case can be to appoint
Where formula is freely combined or is combined, unless generating contradiction between each other.
It should be noted that embodiment enumerated above is only specific embodiment of the utility model.This obvious practicality
Novel to be not limited to above example, the similar variation or deformation made therewith are that those skilled in the art can be from the utility model
Disclosure immediately arrives at or is easy to what is just associated, all should belong to the protection range of the utility model.
Claims (8)
1. a kind of device for being used to measure turbulence acid dip end time, which is characterized in that including：
Pickling channel with entrance and exit, is equipped with steel plate sample in the pickling channel；
Acid tank is stored up, entrance is connect by entrance pipe with the outlet of pickling channel, and the outlet of the storage acid tank passes through outlet
Road is connect with the entrance of pickling channel, and the entrance pipe or export pipeline are equipped with flowmeter；
Reference electrode, test lead are set in the pickling channel, and the reference electrode measures the current potential of acid solution in pickling channel
Value；
Working electrode is contacted with the surface of steel plate sample, and the working electrode measures the potential value on steel plate sample surface.
2. device as described in claim 1, which is characterized in that be equipped with heater in the storage acid tank.
3. device as claimed in claim 2, which is characterized in that the heater is connect with temperature control device.
4. device as described in claim 1, which is characterized in that the export pipeline be equipped with pump and valve at least within it
One.
5. device as described in claim 1, which is characterized in that thermocouple is equipped in the pickling channel.
6. device as described in claim 1, which is characterized in that the reference electrode and working electrode are and electrochemical workstation
Connection.
7. device as described in claim 1, which is characterized in that the pickling channel is formed by the first fixture and the second fixture,
Wherein described first fixture inner surface has the groove of accommodating steel plate sample.
8. device as claimed in claim 7, which is characterized in that be equipped between the inner surface of the steel plate sample and the first fixture
Gasket, the working electrode are set between gasket and steel plate sample.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390294.9U CN207557162U (en) | 2017-10-26 | 2017-10-26 | A kind of device for being used to measure turbulence acid dip end time |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390294.9U CN207557162U (en) | 2017-10-26 | 2017-10-26 | A kind of device for being used to measure turbulence acid dip end time |
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| Publication Number | Publication Date |
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| CN207557162U true CN207557162U (en) | 2018-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603891A (en) * | 2019-02-22 | 2020-09-01 | 宝钢新日铁汽车板有限公司 | Flue gas absorption washing system and method |
-
2017
- 2017-10-26 CN CN201721390294.9U patent/CN207557162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603891A (en) * | 2019-02-22 | 2020-09-01 | 宝钢新日铁汽车板有限公司 | Flue gas absorption washing system and method |
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