CN201228266Y - Simulation erosion apparatus for measuring erosion state of blast furnace cooler - Google Patents
Simulation erosion apparatus for measuring erosion state of blast furnace cooler Download PDFInfo
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- CN201228266Y CN201228266Y CNU2008201510834U CN200820151083U CN201228266Y CN 201228266 Y CN201228266 Y CN 201228266Y CN U2008201510834 U CNU2008201510834 U CN U2008201510834U CN 200820151083 U CN200820151083 U CN 200820151083U CN 201228266 Y CN201228266 Y CN 201228266Y
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- erosion
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- blast furnace
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Abstract
A simulated erosion device for measuring the erosion state of a blast furnace cooler comprises a constant-temperature water tank, a water inlet pipe, a heating device, an erosion experiment pipe, a steam pipe and a condensing pipe, wherein water enters the erosion experiment pipe through the water inlet pipe, and is partially heated by the heating device to form water and steam to erode the erosion experiment pipe; the steam enters the condensing pipe through the steam pipe; a relative erosion comparison hanging sheet arranged at the upper end of the condensing pipe is subjected to compared erosion at the same time; and the steam turns into water through the condensing pipe and then flows to the constant-temperature water tank for recycle use, thereby forming a circulation device. The simulated erosion device for measuring the erosion state of the blast furnace cooler has the advantages of simple structure and convenient use, and can perform experiment research on the influence of wall surface temperature of the cooling water pipe on the erosion performance of cooling water to more accurately describe the erosion rule of cooling water. The simulated erosion device suits erosion detection field of various eroded pipes, and has wide application.
Description
Technical field
The utility model relates to the analoging detecting device in the smelting process of a kind of iron or steel, more specifically is the simulation erosion device of the piping erosion state that relates to the blast furnace cooler that is used for detecting smelting process.
Prior art
At present erosion monitoring method commonly used has these two kinds of test piece method and experiment tube methods in the cooling water system of steel production industry.And these the two kinds each have their own differences of erosion monitoring method are specific as follows described:
First kind of examination section method is erosion monitoring method easier in the cooling water system, economic, that use is extensive and classical, it is cut into slices and monitors erosive velocity, pit density, depth of pit by testing certain piece, and understanding etching pattern, but used trial cut sheet is not a heat-transfer surface, and the erosive velocity on the cooling apparatus heat-transfer surface may be different from the erosive velocity that test piece records.
Second kind of developmental tube method is to replace corroding a kind of method that the trial cut sheet is monitored with the metal experiment tube, condition that it can be monitored and water coolant in heat exchanger tube the mobile condition more near some.But the surface that it is exposed in the water coolant still is not a heat-transfer surface.
And think the water coolant dynamic simulation experiment method that also has a kind of less use except above-mentioned two kinds of methods.This method is utilized the steam heating developmental tube, experiment tube is experimentized having under the condition of heat-transfer surface, but the shortcoming of this method is the not wall surface temperature of monitoring experiment pipe, and with the practical situation of steam heating experiment tube and blast-furnace cooled water tube wall surface temperature difference is arranged, and the monitoring cost is higher.
Now press for a kind of can the improvement recirculated cooling water dynamic simulation experiment method on the basis of existing technology, can the simulation erosion device of the erosion rule of water coolant be described more accurately to the water-cooled tube wall surface temperature to the influence of the erosion performance of the water coolant research that experimentizes.
Concrete technical scheme
In order to address the above problem, the utility model provides a kind of simulation erosion device of measuring the blast furnace cooler erosion state, utilize tubular oven heating experiment tube easily, can simulate the wall surface temperature of water-cooled tube when different heat flow density, and can utilize thermopair that tube wall is carried out temperature monitoring, can be to influence the device that rule experimentize of different wall surface temperatures to erosion performance, its concrete structure is as described below:
A kind of simulation erosion device of measuring the blast furnace cooler erosion state comprises Water Tank with Temp.-controlled, it is characterized in that:
The right-hand member of described Water Tank with Temp.-controlled connects the left end of a water inlet pipe, the right-hand member of this water inlet pipe connects the left end interface of a Y-junction, end interface connects the lower end of an erosion experiment pipe on Y-junction, center section part branch at the erosion experiment pipe is provided with a heating unit, the left side interface that passes through No. two Y-junctions of erosion experiment pipe upper end connects the right-hand member of a vapour pipe, and the left end of this vapour pipe following end interface by No. three Y-junctions again connects one vertically downward and enter the prolong of Water Tank with Temp.-controlled.The device of whole mensuration blast furnace cooler erosion state and Water Tank with Temp.-controlled are setting capable of circulation, as long as guarantee to have in the Water Tank with Temp.-controlled water can keep running.
Simulation erosion device according to mensuration blast furnace cooler erosion state of the present utility model is characterized in that: the water inlet pipe middle part between described Water Tank with Temp.-controlled to a Y-junction is provided with a control water pump.This control water pump plays a part the water suction water inlet pipe in the constant temperature water tank.
According to a kind of simulation erosion device of measuring the blast furnace cooler erosion state of the present utility model, it is characterized in that: a described Y-junction is provided with thermometer.It is 0.1 ℃ mercurythermometer that this temperature is counted the one division value, its undulating quantity is not more than ± and 0.2 ℃.Play the temperature of the water of monitoring constant temperature water tank suction water inlet pipe,, avoid unnecessary loss if there is difference can in time stop experiment.
Simulation erosion device according to mensuration blast furnace cooler erosion state of the present utility model is characterized in that: the erosion experiment pipe hypomere part that described Y-junction upper end is interfaced between the heating unit has set gradually water valve and under meter from bottom to up.Water valve plays the water yield that control enters the erosion experiment pipe, and under meter plays the water yield that observation enters the erosion experiment pipe.
Simulation erosion device according to mensuration blast furnace cooler erosion state of the present utility model, it is characterized in that: described heating unit comprises tubular oven, jointing and thermopair, tubular oven is fixed and passed to the stage casing part of erosion experiment pipe by the jointing at two ends about this heating unit, thermopair is arranged on erosion experiment pipe middle part, contacts with the erosion experiment pipe.The jointing erosion experiment pipe that has been fixedly clamped is located at the centre of tubular oven, having guaranteed is heated heat evenly, thermopair plays the pipe surface temperature of monitoring erosion experiment pipe.
Simulation erosion device according to mensuration blast furnace cooler erosion state of the present utility model is characterized in that: described and vapour pipe left end connect vertically downward and the inner upper end that enters the prolong of Water Tank with Temp.-controlled be provided with relatively lacing film of relative erosion.This lacing film is in the intersection of vapour pipe to prolong, and its relative erosion effect is used for doing further relatively with the erosion experiment pipe.
Use the utility model to obtain following beneficial effect:
1. the comparing of prior art, recirculated cooling water dynamic simulation experiment method is improved, made test effect and testing precision improve greatly;
2. piped erosion experiment Guan Weiyi heat-transfer surface can be described the erosion rule of water coolant more accurately to the water-cooled tube wall surface temperature to the influence of the erosion performance of the water coolant research that experimentizes;
3. use erosion relatively to compare lacing film and can do further comparison, draw data more accurately the erosion condition of piped erosion experiment pipe.
Description of drawings
Fig. 1 is a kind of one-piece construction synoptic diagram of measuring the simulation erosion device of blast furnace cooler erosion state of the present utility model.
Among the figure, 1-Water Tank with Temp.-controlled, 2-water pump, the 3-thermometer, Y-junction of 4-, 5-water valve, the 6-under meter, 7-jointing, 8-tubular oven, 9-erosion experiment pipe, 10-thermopair, 11-corrode the comparison lacing film relatively, the 12-water inlet pipe, No. two Y-junctions of 13-, 14-vapour pipe, No. three Y-junctions of 15-, the 16-prolong.
Embodiment
In order to study the relation of water-cooled tube wall surface temperature and erosion performance, designed to monitor and corroded the experimental installation that the test tube wall surface temperature changes.
Embodiment:
Key position of the present utility model is to utilize tubular oven 8 heating erosion experiment pipes 9, its size of burner hearth is Φ 35*300 (can select according to actual needs), temperature rating: 1000 ℃, this electric furnace is furnished with temperature regulator and (nickel chromium triangle/nisiloy) thermopair 10, can measure, instigate fire box temperature and control automatically.The erosion test tube that is adopted is of a size of: diameter 10mm * 1mm, and length is 200mm, material can be selected stainless steel, No. 20 highquality carbon steels, brass etc. and the identical metallic substance (also can select according to actual needs) of institute's analog field device.Require the inwall zero defect of experiment tube.
In the temperature that corrodes test tube outer tube wall installation thermopair 10 monitoring tube walls.Significant parameters such as the flow velocity of simulation water coolant, water temperature, water quality, water-cooled tube material, water-cooled tube pipe surface temperature in experimentation.Flow by valve control water pump 2 is regulated different flow velocities, and maximum flow velocity is 3m/s.Utilizing constant temperature water tank 1 to control different water temperatures, is the water temperature that 0.1 ℃ mercurythermometer 3 is monitored ingress with scale division value, make its undulating quantity be not more than ± 0.2 ℃.The wall surface temperature of the power regulation erosion experiment pipe 9 by regulating tubular oven 8, regulation range is between 100-200 ℃.Experiment can be adopted different actual condition waters, also can be according to wherein major ingredients water distribution voluntarily.Select the erosion test tube of unlike material according to the difference of analog field device.
At first will carry out surface treatment to erosion experiment pipe 9 before the experiment, be that 60 flint paper polishes the pitting corrosion in the experiment tube, spot corrosion with granularity earlier, is that 150 fine sandpaper is further polished with granularity again, then experiment tube cleaned.Next experiment tube is weighed, be designated as G, require carbon steel and low alloy steel to be accurate to 1mg, corrosion-resisting steel is accurate to 0.5mg.Erosion experiment pipe and jointing 7 are connected, and check whether leak.Before experiment, instrument is proofreaied and correct, and carry out system and clean,, can adopt the pre-film scheme of poly-phosphate-zinc salt to carry out pre-film if when the erosion experiment pipe needs pre-film.At first open water pump 2 then, regulate flow velocity to the requirement of experiment parameter, treat system stability after, open tubular oven, regulate wall surface temperature by adjusting power and begin to experimentize to the parameter of requirement of experiment.
Water in the constant temperature water tank 1 enters erosion experiment pipe 9 by water inlet pipe 12, add thermosetting water and steam and the erosion experiment pipe is corroded in tubular oven 8 parts, steam enters prolong 15 by vapour pipe 14 again, the relative erosion comparison lacing film 11 that is provided with in prolong upper end also compares erosion simultaneously, and steam becomes water by prolong and continues to flow into constant temperature water tank 1 and recycle.
Be 3-5 days whole experimental period.Experiment is closed tubular oven 8 earlier after finishing, and then switches off the pump 2.Put into drying baker after erosion experiment pipe 9 unloaded and be dried to its weight of constant weight weighing, count G
1, use dirt in the clear pipe cleaning of stainless steel spoon then, again experiment tube is cleaned, weigh after the oven dry, count G
2
Calculate erosion rate V by following formula:
V＝3650·G
3/S·T·ρ
In the formula: G
3=G-G
2, unit: g
S-experiment tube internal surface area, unit: cm
2
T-experimental period, unit: day
ρ-density metal, unit: g/cm
3
Calculate dirt deposition speed (mcm) by following formula:
mcm＝30(G
1-G
2)/S·T
In the formula: G
1-G
2-dirt quality, unit: mg
S-experiment tube internal surface area, unit: cm
2
T-experimental period, unit: day
Advance to adopt atomic emission spectrum way of qualitative analysis or electron microscopy to carry out qualitative analysis to the dirt on the erosion experiment pipe 9, can judge the product of erosion, fouling by qualitative analysis, thereby water quality is made analysis to the influence of corroding fouling, and the simulation erosion experiment of so far whole mensuration blast furnace cooler erosion state finishes.
The simulation erosion device of mensuration blast furnace cooler erosion state of the present utility model, simple in structure, easy to use, can be to the water-cooled tube wall surface temperature to the influence of the erosion performance of the water coolant research that experimentizes, the erosion rule of water coolant is described more accurately, be applicable to the erosion detection range of various erosion pipelines, have purposes widely.
Claims (6)
1. a simulation erosion device of measuring the blast furnace cooler erosion state comprises Water Tank with Temp.-controlled (1), it is characterized in that:
The right-hand member of described Water Tank with Temp.-controlled (1) connects the left end of a water inlet pipe (12), the right-hand member of this water inlet pipe connects the left end interface of a Y-junction (4), end interface connects the lower end of an erosion experiment pipe (9) on Y-junction, center section part branch at the erosion experiment pipe is provided with a heating unit, the left side interface that pass through No. two Y-junctions (13) of erosion experiment pipe upper end connects the right-hand member of a vapour pipe (14), and the following end interface connection one by No. three Y-junctions (15) is vertically downward and enter the prolong (16) of Water Tank with Temp.-controlled again for the left end of this vapour pipe.
2. as the described a kind of simulation erosion device of measuring the blast furnace cooler erosion state of claim (1), it is characterized in that: described Water Tank with Temp.-controlled (1) is provided with a control water pump (2) to the middle part of the water inlet pipe (12) between the Y-junction (4).
3. a kind of simulation erosion device of measuring the blast furnace cooler erosion state as claimed in claim 1, it is characterized in that: a described Y-junction (4) is provided with thermometer (3).
4. a kind of simulation erosion device of measuring the blast furnace cooler erosion state as claimed in claim 1 is characterized in that: erosion experiment pipe (9) the hypomere part that a described Y-junction (4) upper end is interfaced between the heating unit has set gradually water valve (5) and under meter (6) from bottom to up.
5. a kind of simulation erosion device of measuring the blast furnace cooler erosion state as claimed in claim 1, it is characterized in that: described heating unit comprises tubular oven (8), jointing (7) and thermopair (10), tubular oven is fixed and passed to the stage casing part of erosion experiment pipe (9) by the jointing at two ends about this heating unit, thermopair is arranged on erosion experiment pipe middle part, contacts with the erosion experiment pipe.
6. a kind of simulation erosion device of measuring the blast furnace cooler erosion state as claimed in claim 1 is characterized in that: described and vapour pipe (14) left end connect vertically downward and the inner upper end that enters the prolong (16) of Water Tank with Temp.-controlled be provided with relatively lacing film (11) of relative erosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201510834U CN201228266Y (en) | 2008-07-22 | 2008-07-22 | Simulation erosion apparatus for measuring erosion state of blast furnace cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201510834U CN201228266Y (en) | 2008-07-22 | 2008-07-22 | Simulation erosion apparatus for measuring erosion state of blast furnace cooler |
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|---|---|
| CN201228266Y true CN201228266Y (en) | 2009-04-29 |
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| CNU2008201510834U Expired - Fee Related CN201228266Y (en) | 2008-07-22 | 2008-07-22 | Simulation erosion apparatus for measuring erosion state of blast furnace cooler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674721A (en) * | 2013-12-11 | 2014-03-26 | 中国石油大学(华东) | Device and method for measuring elasticity modulus of pore throat scale elastic microsphere |
-
2008
- 2008-07-22 CN CNU2008201510834U patent/CN201228266Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674721A (en) * | 2013-12-11 | 2014-03-26 | 中国石油大学(华东) | Device and method for measuring elasticity modulus of pore throat scale elastic microsphere |
| CN103674721B (en) * | 2013-12-11 | 2016-04-27 | 中国石油大学(华东) | A kind of device and method measuring pore scale elastic microsphere elastic modulus |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20160722 |