CN201265020Y - Special material level switch for blast furnace dry method ash removal - Google Patents
Special material level switch for blast furnace dry method ash removal Download PDFInfo
- Publication number
- CN201265020Y CN201265020Y CNU2008201230176U CN200820123017U CN201265020Y CN 201265020 Y CN201265020 Y CN 201265020Y CN U2008201230176 U CNU2008201230176 U CN U2008201230176U CN 200820123017 U CN200820123017 U CN 200820123017U CN 201265020 Y CN201265020 Y CN 201265020Y
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- CN
- China
- Prior art keywords
- blast furnace
- level switch
- feeler lever
- material level
- probing rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a material level switch specially used for ash-removal of blast furnace by a dry-method, relating to the technical field of blast furnace dry-method ash-removal. The material level switch consists of an electric apparatus measurement unit (1), a probing rod (2), a flange (3), a protection sleeve (4) and a core wire (5); the flange (3) is welded with the probing rod (2); the electric apparatus measurement unit (1) is internally provided with an electric apparatus measurement circuit which is formed by a wave impedance measurement principle; when the waveguide commonly consisting of the core wire (5) and the probing rod (2) is changed, the relay is driven to emit action signals so as to complete the measurement operation; the end of a probe (2) employs a insulated and high-temperature resistant material of low dielectric loss to prepare a sealed protection sleeve (4); and the probing rod (2) and the flange (3) form a supporting structure and the core wire (5) and the probing rod (2) commonly form the waveguide. The material level switch has the advantages that the structure has the characteristic of material adhesion interference resistance, can be suitable for various working conditions of the blast furnace dry-method ash-removal and has stable performance.
Description
Technical field
The utility model relates to blast furnace dry method ash disposal technical field, a kind of blast furnace dry method ash disposal PP Pipe Compound bit switch particularly is provided, at what use in the blast furnace gas dry ash disposal particular surroundings in the Iron And Steel Industry, the especially design targetedly of measuring principle and structure anti-bridging in the environment of blast furnace gas dry ash disposal.
Background technology
In the level gauging field, according to the whether continuity of measurement signal, level measurement instrument is divided into the continuity metrical instrument and the spacing metrical instrument of solid or liquid; According to the principle difference of measuring, be divided into the level meter of models such as radar type, ultrasonic type, differential pressure type formula, radioactivity formula, Weight type, condenser type, tuning-fork type and blocking rotary type again.Every kind of level measurement instrument all has the requirement of its specific measurement environment and measuring media.In the process of blast furnace dry method ash disposal, the height material level of fly-ash separator ash position is used to control the unloading valve door, adopts spacing metrical instrument so the ash position is measured, but the special environment condition owing to fly-ash separator can not get using in numerous spacing metrical instruments.
1. nonaqueous dust cleaner is an encloses container, go out on advancing under the blast furnace gas, belong to II class explosion-proof area, and unload the blast furnace gas that touches in the grey process sometimes temperature reach more than 200 degrees centigrade, so this working condition for safety, can not use level meters such as ultrasonic wave commonly used and radioactivity.
2. the fly-ash separator internal temperature changes greatly, belongs to high humidity environment, and the medium very easily moisture absorption hardens.It is all multifactor uncertain to add blast furnace ore, fuel, technology etc. in smelting process, so the physical property of the measuring media of blast furnace dry method ash disposal also has uncertainty.Cause in the popular stuff level switch of present market, such as occurring bridging easily and wrong report information in the measuring processes such as some conventional condenser type stuff level switch, tuning-fork type stuff level switch and blocking rotary type stuff level switch, it is unreliable to move.
3. the fly-ash separator cone is equipped with electric motor of shaker, so be installed in the continuous wearing and tearing that the stuff level switch of cone will withstand frequent vibration and dedusting ash.Some stuff level switch commonly used be can not accept this vibration and wearing and tearing at present.
Summary of the invention
The purpose of this utility model is to provide a kind of blast furnace dry method ash disposal PP Pipe Compound bit switch, on blast furnace dry method dust, use not good characteristics at present existing stuff level switch, existing field-effect stuff level switch is carried out structure of modification, make this stuff level switch can fully adapt to the running environment of blast furnace dry method ash disposal and special measuring media, become the PP Pipe Compound bit switch of blast furnace dry method ash disposal.
The utility model is made up of electrical measurement unit 1, feeler lever 2, ring flange 3, sheath 4, heart yearn 5.Ring flange 3 and feeler lever 2 welding, installation electrical measurement circuit in the electrical measurement unit 1, this circuit adopts wave resistance measuring principle to constitute, and drives rly. and send actuating signal and finish surveying work when heart yearn 5 changes with feeler lever 2 common formation waveguide impedances; The end of probe 2 adopts low dielectric loss, insulation, temperature-resistant material to make a sealing sheath 4; Feeler lever 2 constitutes supporting structure with ring flange 3, and heart yearn 5 constitutes waveguide jointly with feeler lever 2 simultaneously.
1. the measuring principle of field-effect stuff level switch is to utilize electromagnetic field to produce a kind of stuff level switch of the principle formation of wave reflection effect in impedance sudden change place, float when being characterized in and float irrelevant with circuit with structurally associated with temperature, therefore need only Stability Analysis of Structures, system is exactly stable.In order to make such stuff level switch can apply to reliably the feeler lever of original field-effect level gage partly done corresponding improvement among the specific environment of blast furnace dry method ash disposal.
2. contain a large amount of elemental metals and carbon dust in the detection medium of blast furnace dry method ash disposal, this mixture is not held at probe electric field is formed shielding, makes level gage can't distinguish material attachment state (being commonly called as bridging) and the full state of material.In order to solve the drawback of the terminal electric field short circuit shielding of probe, the utility model adopts low dielectric loss, insulation, temperature-resistant material to make a sealing sheath at the end of probe, the excessive waveguide of terminal formation avoids producing direct electric field short circuit in the termination, to obtain the optimum measurement result.Sonde configuration is seen utility model Fig. 1, in the electrical measurement unit 1 metering circuit is installed, feeler lever 2 constitutes supporting structure with ring flange 3, feeler lever 2 is the outer conductor of waveguide simultaneously, heart yearn 5 is an inner wire, heart yearn 5 and feeler lever 2 common formation waveguides, and 4 are newly-increased low dielectric loss, insulating sheath, make inner core 5 and testing medium insulation, to reach the purpose that improves anti-bridging ability when satisfying measurement requirement.
The invention has the advantages that this structure has anti-material and adheres to characteristics of interference, can adapt to the various operating modes and the stable performance of blast furnace dry method ash disposal.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 utility model stuff level switch structural representation.Wherein, electrical measurement unit 1, feeler lever 2, ring flange 3, sheath 4, heart yearn 5.
Fig. 2 be Figure 1A-A to sectional view.Wherein, feeler lever 2, sheath 4, heart yearn 5.
Embodiment
The circuit board arrangement that constitutes by the field-effect measuring principle is placed in the electrical measurement unit 1 of aluminum alloy casing, by feeler lever 2 signal is drawn and to constitute measuring system, ring flange 3 and feeler lever 2 welding, installation easy to use, feeler lever 2 is a hollow structure, constitute a probe with intrinsic impedance with heart yearn 5, between heart yearn 5 and feeler lever 2, add an airtight sheath 4, sheath 4 adopts polytetrafluoroethylmaterial material or polyimide material, insulated fully in the heart yearn 5 and the external world, thereby the testing medium of avoiding conducting electricity forms short circuit between feeler lever 2 and heart yearn 5, prevent electric field shielding.
Claims (4)
1, a kind of blast furnace dry method ash disposal PP Pipe Compound bit switch is characterized in that, is made of ring flange (3) and feeler lever (2) welding electrical measurement unit (1), feeler lever (2), ring flange (3), sheath (4), heart yearn (5); The electrical measurement unit is equipped with the electrical measurement circuit in (1), and the end of probe (2) adopts low dielectric loss, insulation, temperature-resistant material to make a sealing sheath (4); Feeler lever (2) constitutes supporting structure with ring flange (3), and heart yearn (5) constitutes waveguide jointly with feeler lever (2).
According to the described switch of claim 1, it is characterized in that 2, feeler lever (2) is the outer conductor of waveguide, heart yearn (5) is an inner wire.
According to the described switch of claim 1, it is characterized in that 3, feeler lever (2) is a hollow structure.
According to the described switch of claim 1, it is characterized in that 4, sheath (4) adopts polytetrafluoroethylmaterial material or polyimide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201230176U CN201265020Y (en) | 2008-10-15 | 2008-10-15 | Special material level switch for blast furnace dry method ash removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201230176U CN201265020Y (en) | 2008-10-15 | 2008-10-15 | Special material level switch for blast furnace dry method ash removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265020Y true CN201265020Y (en) | 2009-07-01 |
Family
ID=40831386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201230176U Expired - Fee Related CN201265020Y (en) | 2008-10-15 | 2008-10-15 | Special material level switch for blast furnace dry method ash removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265020Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441503A (en) * | 2016-09-29 | 2017-02-22 | 湖北科妮工控设备有限公司 | High-frequency traveling wave reflecting type material level switch |
-
2008
- 2008-10-15 CN CNU2008201230176U patent/CN201265020Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441503A (en) * | 2016-09-29 | 2017-02-22 | 湖北科妮工控设备有限公司 | High-frequency traveling wave reflecting type material level switch |
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Legal Events
| 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 |
Granted publication date: 20090701 Termination date: 20141015 |
|
| EXPY | Termination of patent right or utility model |