CN114317878B - Converter oxygen lance nitrogen seal device - Google Patents
Converter oxygen lance nitrogen seal device Download PDFInfo
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- CN114317878B CN114317878B CN202210002626.0A CN202210002626A CN114317878B CN 114317878 B CN114317878 B CN 114317878B CN 202210002626 A CN202210002626 A CN 202210002626A CN 114317878 B CN114317878 B CN 114317878B
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Abstract
The invention belongs to the field of steel-making converter oxygen lance nitrogen sealing, and relates to a converter oxygen lance nitrogen sealing device and a method, wherein the converter oxygen lance nitrogen sealing device comprises an oxygen lance, and a nitrogen sealing plug and a nitrogen sealing seat which are arranged on the oxygen lance in a matching way; be provided with the nitrogen gas import on nitrogen seals seat one side, be provided with the pipeline on the nitrogen sealing stopper, this pipeline has the control system who is used for letting in nitrogen gas through the air feed hose intercommunication, seals respectively the inside and outside of nitrogen sealing stopper, can effectively increase the reliability of nitrogen sealing device, stops that the flue gas in the converter smelting process is excessive from the inside and outside of nitrogen sealing stopper, avoids the polluted environment.
Description
Technical Field
The invention belongs to the field of steel-making converter oxygen lance nitrogen sealing, and relates to a converter oxygen lance nitrogen sealing device and a method.
Background
The nitrogen sealing device of the converter oxygen lance commonly used at present is a structure of a nitrogen sealing seat and a nitrogen sealing plug, and nitrogen or steam is used as a medium to seal the oxygen lance.
At present, nitrogen of a converter oxygen lance enters through a nitrogen seal seat, and then nitrogen is supplied into a gap between the nitrogen seal seat and the nitrogen seal plug through a gap channel between the nitrogen seal seat and the nitrogen seal plug to form nitrogen seal.
At present, when steel slag and other substances appear on a nitrogen seal seat or a nitrogen seal plug of the oxygen lance is not tightly matched with the nitrogen seal seat, the nitrogen seal of the oxygen lance is easy to lose effectiveness, and the smoke of the converter leaks outwards when the smoke is serious, so that the environment pollution is caused.
Disclosure of Invention
In view of the above, the present invention provides a converter oxygen lance nitrogen sealing device and method, which can solve the problem of reliability of converter oxygen lance nitrogen sealing and inhibit the converter flue gas from overflowing from the oxygen lance opening.
In order to achieve the purpose, the invention provides the following technical scheme: a converter oxygen lance nitrogen seal device comprises an oxygen lance, a nitrogen seal plug and a nitrogen seal seat which are arranged on the oxygen lance in a matching way; be provided with the nitrogen gas import on nitrogen seal seat one side, be provided with the pipeline on the nitrogen sealing stopper, this pipeline has the control system who is used for letting in nitrogen gas through air supply hose intercommunication.
Optionally, the control system comprises a nitrogen control device and a gas supply system communicated with the nitrogen control device; the nitrogen control device comprises a manual valve, a regulating valve, a stop valve, a flow check device and a check valve which are connected in sequence.
Optionally, a nitrogen sealing plug positioning block is further mounted at the bottom of the nitrogen sealing plug on the oxygen lance.
A converter oxygen lance nitrogen sealing method is applied to the converter oxygen lance nitrogen sealing device, and comprises the following steps:
s1, feeding nitrogen through a nitrogen seal seat, and forming external seal between a nitrogen seal plug and the nitrogen seal seat to prevent flue gas from overflowing from the space between the nitrogen seal plug and the nitrogen seal seat;
s2, introducing nitrogen into the pipeline on the nitrogen sealing plug through the control system, introducing the gas into the nitrogen sealing plug, supplying the nitrogen between the nitrogen sealing plug and the oxygen lance through the nitrogen sealing plug to form nitrogen sealing seal, and performing nitrogen regulation, switching and flow monitoring through the nitrogen control device.
Optionally, when the nitrogen control device is adjusted, the manual valve is kept normally open for maintenance, when the oxygen lance enters the nitrogen seal downwards, and the nitrogen seal plug is combined with the nitrogen seal seat, the cut-off valve is opened firstly, the regulating valve is in a set valve position, during oxygen blowing work of the oxygen lance, the regulating valve is automatically adjusted according to oxygen blowing intensity of the oxygen lance, and the flow detection device is used as real-time data to judge operation conditions of a nitrogen seal flow channel; the check valve ensures that nitrogen input into the nitrogen plug does not flow back and flow backwards, and the system safety is ensured.
The invention has the beneficial effects that: the converter oxygen lance nitrogen sealing device and the method respectively seal the inside and the outside of the nitrogen sealing plug, can effectively increase the reliability of the nitrogen sealing device, prevent flue gas in the converter smelting process from overflowing from the inside and the outside of the nitrogen sealing plug, and avoid environmental pollution.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is an overall schematic view of a nitrogen sealing device of a converter oxygen lance of the present invention.
Reference numerals are as follows: the device comprises a nitrogen sealing plug 1, a nitrogen sealing seat 2, an oxygen lance 3, a nitrogen sealing plug positioning block 4, a manual valve 5, a regulating valve 6, a shut-off valve 7, a flow check 8, a check valve 9 and an air supply hose 10.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and embodiments may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a nitrogen sealing device for an oxygen lance of a converter comprises an oxygen lance 3, and a nitrogen sealing plug 1 and a nitrogen sealing seat 2 which are arranged on the oxygen lance 3 in a matching way; a nitrogen inlet is arranged on one side of the nitrogen seal seat 2, a small-diameter pipeline is arranged on a nitrogen pipeline of an original oxygen lance 3 gas supply valve station of the nitrogen seal plug 1, the pipeline is communicated with a control system for introducing nitrogen through a gas supply hose 10, and the control system comprises a nitrogen control device and a gas supply system communicated with the nitrogen control device; the nitrogen control device comprises a manual valve 5, a regulating valve 6, a stop valve 7, a flow check device 8 and a check valve 9 which are connected in sequence, and a nitrogen sealing plug positioning block 4 is further installed at the bottom of a nitrogen sealing plug 1 on an oxygen lance 3.
A3 nitrogen sealing method for a converter oxygen lance comprises the following steps:
s1, feeding nitrogen through a nitrogen seal seat 2, and forming external seal between a nitrogen seal plug 1 and the nitrogen seal seat 2 to prevent smoke from overflowing from the space between the nitrogen seal plug 1 and the nitrogen seal seat 2;
s2, introducing nitrogen into a pipeline on the nitrogen sealing plug 1 through a control system, introducing the gas into the nitrogen sealing plug 1, supplying the nitrogen between the nitrogen sealing plug 1 and the oxygen lance 3 through the nitrogen sealing plug 1 to form nitrogen sealing seal, and performing nitrogen adjustment, switching and flow monitoring through a nitrogen control device.
In the embodiment, when the nitrogen control device is adjusted, the manual valve 5 is kept normally open for maintenance, when the oxygen lance 3 enters a nitrogen seal downwards, after the nitrogen seal plug 1 is combined with the nitrogen seal seat 2, the stop valve 7 is firstly opened, the regulating valve 6 is at a set valve position, during the oxygen blowing work of the oxygen lance 3, the regulating valve 6 is automatically adjusted according to the oxygen blowing intensity of the oxygen lance 3, and the flow detection device is used as real-time data to judge the running condition of a nitrogen seal flow channel; the check valve 9 ensures that the nitrogen gas input into the nitrogen sealing plug 1 does not flow back and flow backwards, and ensures the safety of the system.
In the implementation, the nitrogen control device can move along with the lifting of the oxygen lance 3, so that the flue gas is prevented from overflowing between the oxygen lance 3 and the nitrogen sealing plug 1.
According to the method, the nitrogen sealing device of the oxygen lance 3 is reformed, the inner part and the outer part of the nitrogen sealing plug 1 are respectively sealed, the reliability of the nitrogen sealing device can be effectively improved, the flue gas in the smelting process of the converter is prevented from overflowing from the inner part and the outer part of the nitrogen sealing plug 1, and the environment pollution is avoided.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (3)
1. A converter oxygen rifle nitrogen seal device which characterized in that: comprises an oxygen lance, a nitrogen sealing plug and a nitrogen sealing seat which are arranged on the oxygen lance in a matching way; a nitrogen inlet is formed in one side of the nitrogen sealing seat, a pipeline is arranged on the nitrogen sealing plug, and the pipeline is communicated with a control system for introducing nitrogen through an air supply hose; the nitrogen sealing method of the converter oxygen lance nitrogen sealing device comprises the following steps:
s1, supplying nitrogen through a nitrogen seal seat, and forming external seal between a nitrogen seal plug and the nitrogen seal seat to prevent flue gas from overflowing from the space between the nitrogen seal plug and the nitrogen seal seat;
s2, introducing nitrogen into a pipeline on the nitrogen sealing plug through a control system, introducing the gas into the nitrogen sealing plug, supplying the nitrogen between the nitrogen sealing plug and an oxygen lance through the nitrogen sealing plug to form nitrogen sealing seal, and performing nitrogen regulation, switching and flow monitoring through a nitrogen control device;
when the nitrogen control device is adjusted, the manual valve is kept normally open for maintenance, when the oxygen lance enters a nitrogen seal downwards, and a nitrogen seal plug is combined with a nitrogen seal seat, the stop valve is opened firstly, the regulating valve is at a set valve position, during oxygen lance oxygen blowing work, the regulating valve is automatically adjusted according to the oxygen lance oxygen blowing intensity, and the flow detection device is used as real-time data to judge the operation condition of a nitrogen seal flow channel; the check valve ensures that nitrogen input into the nitrogen plug does not flow back and flow backwards, and the system safety is ensured.
2. The nitrogen sealing device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: the control system comprises a nitrogen control device and a gas supply system communicated with the nitrogen control device;
the nitrogen control device comprises a manual valve, a regulating valve, a stop valve, a flow check device and a check valve which are connected in sequence.
3. The nitrogen sealing device for the oxygen lance of the converter as claimed in claim 1, which is characterized in that: a nitrogen sealing plug positioning block is also arranged at the bottom of the nitrogen sealing plug on the oxygen lance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002626.0A CN114317878B (en) | 2022-01-04 | 2022-01-04 | Converter oxygen lance nitrogen seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002626.0A CN114317878B (en) | 2022-01-04 | 2022-01-04 | Converter oxygen lance nitrogen seal device |
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| Publication Number | Publication Date |
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| CN114317878A CN114317878A (en) | 2022-04-12 |
| CN114317878B true CN114317878B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210002626.0A Active CN114317878B (en) | 2022-01-04 | 2022-01-04 | Converter oxygen lance nitrogen seal device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203794932U (en) * | 2014-03-25 | 2014-08-27 | 济钢集团有限公司 | Nitrogen sealing device with oxygen lance opening |
| CN206814809U (en) * | 2017-06-21 | 2017-12-29 | 中天钢铁集团有限公司 | Converter oxygen gun mouth double seal |
| CN207468664U (en) * | 2017-09-28 | 2018-06-08 | 中冶南方工程技术有限公司 | A kind of dissection type oxygen rifle nitrogen seal device |
| CN208917244U (en) * | 2018-09-03 | 2019-05-31 | 鞍钢股份有限公司 | A kind of molten iron pretreatment desulfurizing flue dust nitrogen seal device |
| CN211814552U (en) * | 2020-03-19 | 2020-10-30 | 山东泰山钢铁集团有限公司 | Simple device for inhibiting smoke generation of converter oxygen lance mouth |
| CN213570567U (en) * | 2020-10-28 | 2021-06-29 | 金烨钢铁集团有限公司 | Converter oxygen lance nitrogen seal device |
-
2022
- 2022-01-04 CN CN202210002626.0A patent/CN114317878B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203794932U (en) * | 2014-03-25 | 2014-08-27 | 济钢集团有限公司 | Nitrogen sealing device with oxygen lance opening |
| CN206814809U (en) * | 2017-06-21 | 2017-12-29 | 中天钢铁集团有限公司 | Converter oxygen gun mouth double seal |
| CN207468664U (en) * | 2017-09-28 | 2018-06-08 | 中冶南方工程技术有限公司 | A kind of dissection type oxygen rifle nitrogen seal device |
| CN208917244U (en) * | 2018-09-03 | 2019-05-31 | 鞍钢股份有限公司 | A kind of molten iron pretreatment desulfurizing flue dust nitrogen seal device |
| CN211814552U (en) * | 2020-03-19 | 2020-10-30 | 山东泰山钢铁集团有限公司 | Simple device for inhibiting smoke generation of converter oxygen lance mouth |
| CN213570567U (en) * | 2020-10-28 | 2021-06-29 | 金烨钢铁集团有限公司 | Converter oxygen lance nitrogen seal device |
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| Publication number | Publication date |
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| CN114317878A (en) | 2022-04-12 |
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