CN203247283U - Device for measuring micro differential pressure at converter opening - Google Patents
Device for measuring micro differential pressure at converter opening Download PDFInfo
- Publication number
- CN203247283U CN203247283U CN2013201413657U CN201320141365U CN203247283U CN 203247283 U CN203247283 U CN 203247283U CN 2013201413657 U CN2013201413657 U CN 2013201413657U CN 201320141365 U CN201320141365 U CN 201320141365U CN 203247283 U CN203247283 U CN 203247283U
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- differential pressure
- converter
- valve
- pressure
- pipeline
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- Expired - Fee Related
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- Y02W30/54—
Abstract
The utility provides a device for measuring micro differential pressure at a converter opening and aims at the problems that systems for measuring micro differential pressure at converter openings of most steel mills are mounted close to the converter openings, and blocking is removed by using relevant mechanisms, and measuring errors of the micro differential pressure at the converter openings are larger, so that gas recovery and dust removal effects of converters are affected. The device for measuring the micro differential pressure at the converter opening comprises three pressure ports formed in a gas duct at the tail end of the converter, wherein the pressure ports are connected with an annular pipe; the annular pipe is connected with a differential pressure measurement pipeline and a nitrogen blowing pipeline; a valve I and a valve II are arranged on the differential pressure measurement pipeline; the differential pressure measurement pipeline is connected with a differential pressure transmitter I and a differential pressure transmitter II; the nitrogen blowing pipeline is connected with a nitrogen bottle; and a valve III and a valve IV are arranged on the nitrogen blowing pipeline. The device can be used for measuring the micro differential pressure at the converter opening.
Description
Technical field:
The utility model relates to a kind of converter mouth micro-pressure-difference measuring apparatus.
Background technology:
Existing converter mouth differential pressure measuring technology is fixed on the top of flue, and the fire door micro-pressure-difference during near the position measurement converter smelting of fire door after converter smelting finishes, adopts relevant hydraulic gear that fire door differential pressure pressure pipe is carried out block clearing.The problem that exists has:
Because of the pressure position of the converter mouth differential pressure measurement point fire door near converter, the splash phenomenon often occurs in converter when smelting, and slag or the molten steel of converter ejection can stop up converter mouth differential pressure pressure pipe, adopt relevant hydraulic gear pressure pipe can't be dredged.Because of the converter mouth differential pressure usually be controlled at-100Pa ~+100Pa, the maximum error that the obstruction of converter mouth differential pressure pressure pipe can cause the converter mouth differential pressure to measure; In addition, because the fire door of the close converter in the position of converter mouth differential pressure pressure pipe, converter can cause that the fire door differential pressure fluctuation of converter is larger when improper smelting state occurs, cause the error of measurement; The too close fire door of the pressure pipe that the converter mouth differential pressure is measured is unfavorable for maintenance personnel's maintenance and maintenance.
Domestic a lot of steel mill all is provided with converter mouth differential pressure measuring technology, and the converter mouth differential pressure measuring system of most of steel mills all is installed in the position near fire door, adopts relevant mechanism to carry out block clearing; Because converter mouth differential pressure measuring error is larger, have influence on coal-gas recovering and the dust removing effects of converter.
The utility model content:
The purpose of this utility model is that the problem for above-mentioned existence provides a kind of converter mouth micro-pressure-difference measuring apparatus, even converter generation splash, reinforced and other improper blowing state can not cause larger impact and be convenient to the converter mouth differential pressure and safeguard and overhaul.
Above-mentioned purpose realizes by following technical scheme:
Converter mouth micro-pressure-difference measuring apparatus, comprise three pressure ports on the terminal flue that is opened in converter, described pressure port all is connected with endless tube, described endless tube connects differential pressure measurement pipeline and nitrogen purging pipeline, be provided with valve one and valve two on the described differential pressure measurement pipeline, described differential pressure measurement pipeline connects differential pressure transmitter one and differential pressure transmitter two, and described nitrogen purging pipeline connects nitrogengas cylinder, is provided with valve three and valve four on the described nitrogen purging pipeline.
Described converter mouth micro-pressure-difference measuring apparatus, the phasing degree between described three pressure ports are 80 °-90 °.
Beneficial effect:
1. the endways position of flue is opened in the utility model converter mouth differential pressure pressure perforate, and in the position of fire door be not because endways flue to measure the impact that converter mouth differential pressure differential pressure blown less.Even converter generation splash, reinforced and other improper blowing state can not cause larger impact and be convenient to the converter mouth differential pressure and safeguard and overhaul.
2. the utility model is because the pressure system adopts 3 pressures, and three pressure ports are distributed in the different positions of terminal flue, the mode that endless tube is all pressed.So it is poor with extraneous real differential pressure that the differential pressure that the pressure system gets can be reacted flue really.
3. the utility model is on the nitrogen purging pipeline, two dead electricity are set lose valve three and the valve four of air to close, the pressure that purges nitrogen is 6 ~ 8 kilograms, be that a valve has fault can guarantee that also the nitrogen purging pipeline cuts off reliably even the purpose of two valves is set, thereby prevent that nitrogen from damaging the differential pressure transmitter that error of measurement is pressed.Even it is that a valve has fault can guarantee that also differential pressure transmitter is not damaged that the purpose of valve one and 2 two valves of valve is set at the differential pressure measurement pipeline.PLC control is adopted in the control of four valves, the PLC system is according to the state Open valve of converter smelting, when the blowing commencing signal is received in converter, valve one and valve two are opened, valve three and valve four close, and converter mouth differential pressure system is in the mode that pressure is measured, when finishing blowing is received in converter, valve one and valve two close, and valve three and valve are opened.Converter mouth differential pressure system is in the mode of nitrogen blowback.Can select nitrogen purging according to virtual condition on the main operation picture of converter is a few stove one switches.The maintenance personnel can open the blind plate of pressure port according to stopping up to get situation, adopts special tool that pressure port is carried out block clearing.
4. the utility model adopts two differential pressure transmitters, the observed value of two differential pressure transmitters is all sent into the PLC system, on converter main operation picture, can select the observed value of differential pressure transmitter one or differential pressure transmitter two as the observed value of converter mouth differential pressure system, when a differential pressure transmitter is out of order, the PLC system can be automatically with the observed value of another one transmitter as converter mouth differential pressure observed value.And at picture demonstration fault differential pressure transmitter.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, the terminal flue of converter; 2, pressure port; 3, endless tube; 4, differential pressure measurement pipeline; 5, nitrogen purging pipeline; 6, valve one; 7, valve two; 8, differential pressure transmitter one; 9, differential pressure transmitter two; 10, nitrogengas cylinder; 11, valve three; 12, valve four.
Embodiment:
As shown in Figure 1: converter mouth micro-pressure-difference measuring apparatus of the present utility model, comprise three pressure ports 2 on the terminal flue 1 that is opened in converter, described pressure port all is connected with endless tube 3, described endless tube connects differential pressure measurement pipeline 4 and nitrogen purging pipeline 5, be provided with valve 1 and valve 27 on the described differential pressure measurement pipeline, described differential pressure measurement pipeline connects differential pressure transmitter 1 and differential pressure transmitter 29, described nitrogen purging pipeline connects nitrogengas cylinder 10, is provided with valve 3 11 and valve 4 12 on the described nitrogen purging pipeline.
Embodiment 2:
Embodiment 1 described converter mouth micro-pressure-difference measuring apparatus, the phasing degree between described three pressure ports is 80 °-90 °.
Claims (2)
1. converter mouth micro-pressure-difference measuring apparatus, it is characterized in that: comprise three pressure ports on the terminal flue that is opened in converter, described pressure port all is connected with endless tube, described endless tube connects differential pressure measurement pipeline and nitrogen purging pipeline, be provided with valve one and valve two on the described differential pressure measurement pipeline, described differential pressure measurement pipeline connects differential pressure transmitter one and differential pressure transmitter two, described nitrogen purging pipeline connects nitrogengas cylinder, is provided with valve three and valve four on the described nitrogen purging pipeline.
2. converter mouth micro-pressure-difference measuring apparatus according to claim 1, it is characterized in that: the phasing degree between described three pressure ports is 80 °-90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201413657U CN203247283U (en) | 2013-03-27 | 2013-03-27 | Device for measuring micro differential pressure at converter opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201413657U CN203247283U (en) | 2013-03-27 | 2013-03-27 | Device for measuring micro differential pressure at converter opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203247283U true CN203247283U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201413657U Expired - Fee Related CN203247283U (en) | 2013-03-27 | 2013-03-27 | Device for measuring micro differential pressure at converter opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203247283U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866082A (en) * | 2014-03-05 | 2014-06-18 | 首钢总公司 | Method and device for adjusting micro differential pressure at converter mouth |
| CN105779685A (en) * | 2016-03-23 | 2016-07-20 | 中冶南方工程技术有限公司 | Device and method for safely measuring and purging micro-differential pressure of converter mouth |
| CN106011364A (en) * | 2016-08-01 | 2016-10-12 | 南京金瀚环保科技有限公司 | Wet-method primary dust-proof micro pressure difference anti-blocking method of steel-making converter |
| CN107012313A (en) * | 2016-01-27 | 2017-08-04 | 鞍钢股份有限公司 | One kind heating furnace pressure scaling method |
| CN109161638A (en) * | 2018-10-16 | 2019-01-08 | 陕西龙门钢铁有限责任公司 | A kind of automatic control device of micro-differential pressure |
-
2013
- 2013-03-27 CN CN2013201413657U patent/CN203247283U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866082A (en) * | 2014-03-05 | 2014-06-18 | 首钢总公司 | Method and device for adjusting micro differential pressure at converter mouth |
| CN103866082B (en) * | 2014-03-05 | 2015-11-25 | 首钢总公司 | A kind of converter mouth micro-pressure-difference control method and device |
| CN107012313A (en) * | 2016-01-27 | 2017-08-04 | 鞍钢股份有限公司 | One kind heating furnace pressure scaling method |
| CN105779685A (en) * | 2016-03-23 | 2016-07-20 | 中冶南方工程技术有限公司 | Device and method for safely measuring and purging micro-differential pressure of converter mouth |
| CN106011364A (en) * | 2016-08-01 | 2016-10-12 | 南京金瀚环保科技有限公司 | Wet-method primary dust-proof micro pressure difference anti-blocking method of steel-making converter |
| CN109161638A (en) * | 2018-10-16 | 2019-01-08 | 陕西龙门钢铁有限责任公司 | A kind of automatic control device of micro-differential pressure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 |