CN112458222A - Blast furnace tuyere small sleeve leakage detection device and leakage detection method - Google Patents
Blast furnace tuyere small sleeve leakage detection device and leakage detection method Download PDFInfo
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- CN112458222A CN112458222A CN202011194097.6A CN202011194097A CN112458222A CN 112458222 A CN112458222 A CN 112458222A CN 202011194097 A CN202011194097 A CN 202011194097A CN 112458222 A CN112458222 A CN 112458222A
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- water
- tuyere small
- small sleeve
- water inlet
- cooling water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
- C21B7/103—Detection of leakages of the cooling liquid
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
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- Organic Chemistry (AREA)
- Examining Or Testing Airtightness (AREA)
- Blast Furnaces (AREA)
Abstract
The invention relates to a blast furnace tuyere small sleeve leakage detection device and a leakage detection method, and belongs to the technical field of blast furnace maintenance tools. The water inlet and outlet device is characterized by comprising a water outlet pipe and a water inlet pipe, wherein one end of the water outlet pipe and one end of the water inlet pipe are respectively communicated with a tuyere small sleeve, the other end of the water inlet pipe is provided with a water inlet thermometer and a water inlet flowmeter, and the other end of the water outlet pipe is respectively provided with a water outlet thermometer and a water outlet flowmeter. Obtaining the temperature difference and the flow difference of the cooling water of each tuyere small sleeve; the cooling water temperature difference and the flow difference of any tuyere small sleeve are compared with the cooling water temperature difference and the flow difference of the other tuyere small sleeves; if the temperature difference of the cooling water of one tuyere small sleeve is larger than the average value of the temperature differences of the cooling water of the other tuyere small sleeves and the flow difference of the cooling water of the tuyere small sleeve is larger than 0.5m3And h, judging the damage and water leakage of the tuyere. The application has simple structure and is quick to the air portThe small sleeve is used for leakage detection, and whether the blast furnace tuyere small sleeve is damaged or not can be accurately judged, so that the leakage detection accuracy is improved; the workload of leak detection is reduced.
Description
Technical Field
The invention relates to a blast furnace tuyere small sleeve leakage detection device and a leakage detection method, and belongs to the technical field of blast furnace maintenance tools.
Background
The blast furnace tuyere small sleeve is important equipment in a blast furnace air inlet system and is used for feeding hot air into a blast furnace. When the blast furnace is normally produced, the tuyere small sleeve can be damaged and leak water due to reasons of coal flow scouring of a coal gun or contact with molten iron and the like, the damaged and leaking water of the tuyere small sleeve needs to be checked and confirmed in time so as to control water or replace the tuyere small sleeve, otherwise, the leaked water flows into the hearth to influence the heat balance of the hearth and even possibly cause a serious accident of furnace coolness. At present, the known leak detection method for the tuyere small sleeve comprises the following steps: 1. and (3) field inspection confirmation method: when water marks appear on the air ports or the iron ports, the air ports are inspected one by one on site, the water inlet valve of the small air port sleeve is closed, whether the water outlet of the small air port sleeve has an asthma phenomenon or not is observed, and whether water leakage exists or not is judged; 2. observation flowmeter and field confirmation method: when the flow difference between the water inlet pipe and the water outlet pipe of the tuyere small sleeve rises, the water inlet valve of the tuyere small sleeve is closed, whether the water outlet of the tuyere small sleeve has the breathing phenomenon or not is observed to judge whether water leakage exists or not, although the workload of the method is reduced, the misjudgment often occurs due to the influence of sundries and the like in the cooling water of the tuyere small sleeve, and the accuracy is poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing a leakage detection device and a leakage detection method for a blast furnace tuyere small sleeve aiming at the prior art, which can accurately judge whether the blast furnace tuyere small sleeve is damaged or not and improve the accuracy; and the workload of leak detection is reduced.
The technical scheme adopted by the invention for solving the problems is as follows: a blast furnace tuyere small sleeve leakage detection device comprises a furnace hearth, wherein a plurality of tuyeres are arranged along the circumferential direction of the furnace hearth, any one of the tuyeres is respectively provided with a leakage detection device, the leakage detection device comprises a water outlet pipe and a water inlet pipe, one end of the water outlet pipe and one end of the water inlet pipe are respectively communicated with the tuyere small sleeve, the other end of the water inlet pipe is provided with a water inlet thermometer and a water inlet flowmeter, the water inlet thermometer is used for measuring the temperature of cooling water in the water inlet pipe, and the water inlet flowmeter is used for measuring the flow of the cooling water in; and the other end of the water outlet pipe is respectively provided with a water outlet thermometer and a water outlet flowmeter, the water outlet thermometer is used for measuring the temperature of cooling water in the water outlet pipe, and the water outlet flowmeter is used for measuring the flow of the cooling water in the water pipe.
The water inlet thermometer and the water outlet thermometer are thermocouples respectively.
A blast furnace tuyere small sleeve leak detection method comprises the following steps:
the method comprises the following steps: reading and recording numerical values of a water inlet thermometer, a water inlet flowmeter, a water outlet thermometer and a water outlet flowmeter corresponding to any tuyere small sleeve;
step two: subtracting the corresponding water inlet thermometer value from the water outlet thermometer value of each tuyere small sleeve to obtain the temperature difference of the cooling water of the tuyere small sleeve; subtracting the corresponding outlet flow meter value from the inlet flow meter value of the cooling water in the tuyere small sleeve to obtain the flow difference of the cooling water in the tuyere small sleeve;
step three: the cooling water temperature difference and the flow difference of any tuyere small sleeve are compared with the cooling water temperature difference and the flow difference of the other tuyere small sleeves; if the temperature difference of the cooling water of one tuyere small sleeve is larger than the average value of the temperature differences of the cooling water of the other tuyere small sleeves (the average value is the average value of the temperature differences of the cooling water of all other tuyere small sleeves without the target tuyere small sleeve), and the flow difference of the cooling water of the tuyere small sleeves is larger than 0.5m3And h, judging the damage and water leakage of the tuyere.
And the temperature difference of the cooling water of the tuyere small sleeve in the third step is 1-2 ℃ higher than the average value of the temperature differences of the cooling water of the other tuyere small sleeves.
Compared with the prior art, the invention has the advantages that: a leakage detection device and a leakage detection method for blast furnace tuyere small sleeves are characterized in that a plurality of tuyeres are arranged along the circumferential direction of a furnace hearth, each tuyere small sleeve is connected with a water inlet pipe and a water outlet pipe respectively, a thermometer and a flowmeter are arranged on the water inlet pipe and the water outlet pipe respectively, and the temperature difference and the flow difference of cooling water of each tuyere small sleeve are calculated. And judging whether the tuyere small sleeve is damaged or not and leaks water by comparing the temperature difference and the flow difference of the tuyere small sleeve cooling water. The tuyere small sleeve leakage detection device is simple in structure, leakage of the tuyere small sleeve can be quickly detected, whether the tuyere small sleeve of the blast furnace is damaged or not can be accurately judged, and the leakage detection accuracy is improved; the workload of leak detection is reduced.
Drawings
FIG. 1 is a schematic view of a blast furnace tuyere small sleeve leak detection device according to an embodiment of the present invention;
FIG. 2 is a statistical schematic view of the water inflow and outflow difference of all tuyere small sleeves when the tuyere small sleeves are damaged and leak water;
FIG. 3 is a statistical view of the cooling water temperature difference of all tuyere small sleeves when the tuyere small sleeve is damaged and leaks water
FIG. 4 is a statistical schematic view of the water inflow and outflow difference of all tuyere small sleeves when No. 15 tuyere small sleeve is damaged and leaks water;
FIG. 5 is a statistical schematic view of the cooling water temperature difference of all tuyere small sleeves when the No. 15 tuyere small sleeve is damaged and leaks water;
in the figure, a water inlet pipe 1, a water outlet pipe 2, a water inlet thermometer 3, a water inlet flowmeter 4, a water outlet thermometer 5, a water outlet flowmeter 6, a tuyere small sleeve 7 and a hearth 8 are arranged.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the blast furnace tuyere small sleeve leakage detecting device in the embodiment includes a furnace hearth 8, a plurality of tuyeres are arranged along the circumferential direction of the furnace hearth 8, and any one of the tuyeres is provided with a leakage detecting device. The leakage detection device comprises a water outlet pipe 2, a water inlet pipe 1, wherein one end of the water outlet pipe 2 and one end of the water inlet pipe 1 are respectively communicated with a tuyere small sleeve 7, a water inlet thermometer 3 and a water inlet flow meter 4 are arranged at the other end of the water inlet pipe 1, the water inlet thermometer 3 is used for measuring the temperature of cooling water of the water inlet pipe 1, and the water inlet flow meter 4 is used for measuring the flow of the cooling water of the water inlet pipe 1. The other end of the water outlet pipe 2 is respectively provided with a water outlet thermometer 5 and a water outlet flowmeter 6, the water outlet thermometer 5 is used for measuring the temperature of the cooling water of the water outlet pipe 2, and the water outlet flowmeter 6 is used for measuring the flow of the cooling water of the water outlet pipe 2.
The water inlet thermometer 3 and the water outlet thermometer 5 are thermocouples, respectively.
A blast furnace tuyere small sleeve leak detection method comprises the following steps: and reading and recording the numerical values of the inlet water thermometer 3, the inlet water flowmeter 4, the outlet water thermometer 5 and the outlet water flowmeter 6 of any tuyere small sleeve. The temperature difference of the cooling water of the tuyere small sleeve 7 is the difference of the numerical values of the water outlet thermometer 5 and the water inlet thermometer 3, and the flow difference of the cooling water of the tuyere small sleeve 7 is the difference of the water inlet flowmeter 4 and the water outlet flowmeter6, the cooling water temperature difference and the flow difference of any tuyere small sleeve 7 are compared with the cooling water temperature difference and the flow difference of the other tuyere small sleeves. As shown in FIGS. 2 and 3, the temperature difference and flow difference of the cooling water of the tuyere small sleeve during the normal production of the blast furnace are made into, but not limited to, a trend chart, as shown in FIGS. 4 and 5, when the temperature difference of the cooling water of the #15 tuyere small sleeve exceeds the average value of the temperature differences of the cooling water of other tuyere small sleeves by 1.5 ℃ and the flow difference of the cooling water of the tuyere small sleeve is more than 0.5m3And h, judging that the tuyere is damaged and leaks water.
In the normal production process of the blast furnace, a plurality of air ports are arranged along the circumferential direction of the furnace hearth, each air port small sleeve is respectively connected with a water inlet pipe and a water outlet pipe, a thermometer and a flowmeter are respectively arranged on the water inlet pipe and the water outlet pipe, and the temperature difference and the flow difference of cooling water of each air port small sleeve are calculated. And judging whether the tuyere small sleeve is damaged or not and leaks water by comparing the temperature difference and the flow difference of the tuyere small sleeve cooling water. The tuyere small sleeve leakage detection device is simple in structure, leakage of the tuyere small sleeve can be quickly detected, whether the tuyere small sleeve of the blast furnace is damaged or not can be accurately judged, and the leakage detection accuracy is improved; the workload of leak detection is reduced.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (4)
1. The utility model provides a blast furnace tuyere small sleeve leakage detection device, includes furnace hearth (8), follows furnace hearth (8) circumferencial direction is equipped with a plurality of tuyeres, arbitrary the tuyere is equipped with leakage detection device, its characterized in that respectively: the leakage detection device comprises a water outlet pipe (2) and a water inlet pipe (1), one end of the water outlet pipe (2) and one end of the water inlet pipe (1) are respectively communicated with a tuyere small sleeve (7), the other end of the water inlet pipe (1) is provided with a water inlet thermometer (3) and a water inlet flowmeter (4), the water inlet thermometer (3) is used for measuring the temperature of cooling water in the water inlet pipe (1), and the water inlet flowmeter (4) is used for measuring the flow of the cooling water in the water inlet pipe (1); the other end of the water outlet pipe (2) is respectively provided with a water outlet thermometer (5) and a water outlet flowmeter (6), the water outlet thermometer (5) is used for measuring the temperature of cooling water in the water outlet pipe (2), and the water outlet flowmeter (6) is used for measuring the flow of the cooling water in the water pipe (2).
2. The blast furnace tuyere small sleeve leakage detection device as claimed in claim 1, wherein: the water inlet thermometer (3) and the water outlet thermometer (5) are thermocouples respectively.
3. The blast furnace tuyere small sleeve leak checking method based on any one of claims 1-2, characterized by comprising the following steps: the steps are as follows:
the method comprises the following steps: reading and recording numerical values of the water inlet thermometer (3), the water inlet flowmeter (4), the water outlet thermometer (5) and the water outlet flowmeter (6) corresponding to any tuyere small sleeve (7);
step two: subtracting the value of the corresponding water inlet thermometer (3) from the value of the water outlet thermometer (5) of each tuyere small sleeve (7) to obtain the temperature difference of the cooling water of the tuyere small sleeve (7); subtracting the value of the corresponding water outlet flow meter (6) from the value of the water inlet flow meter (4) of the cooling water in the tuyere small sleeve (7) to obtain the flow difference of the cooling water in the tuyere small sleeve (7);
step three: the cooling water temperature difference and the flow difference of any tuyere small sleeve (7) are compared with the cooling water temperature difference and the flow difference of the other tuyere small sleeves; if the temperature difference of the cooling water of one tuyere small sleeve is larger than the average value of the temperature differences of the cooling water of the other tuyere small sleeves and the flow difference of the cooling water of the tuyere small sleeve is larger than 0.5m3And h, judging the damage and water leakage of the tuyere.
4. The blast furnace tuyere small sleeve leakage detection method according to claim 3, characterized in that: and the temperature difference of the cooling water of the tuyere small sleeve in the third step is 1-2 ℃ higher than the average value of the temperature differences of the cooling water of the other tuyere small sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194097.6A CN112458222A (en) | 2020-10-30 | 2020-10-30 | Blast furnace tuyere small sleeve leakage detection device and leakage detection method |
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| CN202011194097.6A CN112458222A (en) | 2020-10-30 | 2020-10-30 | Blast furnace tuyere small sleeve leakage detection device and leakage detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836588A (en) * | 2022-04-25 | 2022-08-02 | 江苏沙钢集团有限公司 | Positioning method and monitoring system for water leakage of blast furnace tuyere |
| CN116334331A (en) * | 2023-03-31 | 2023-06-27 | 湖南德尚源耐磨工业有限公司 | Blast furnace tuyere device, tuyere small sleeve, tuyere medium sleeve and energy-saving method thereof |
Citations (3)
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| CN2318228Y (en) * | 1997-12-08 | 1999-05-12 | 张露 | Blast-furnace tuyere small leak detector |
| CN206127341U (en) * | 2016-10-25 | 2017-04-26 | 唐山钢铁国际工程技术股份有限公司 | Blast furnace stave monitoring system that leaks |
| CN111518975A (en) * | 2020-06-16 | 2020-08-11 | 攀钢集团西昌钢钒有限公司 | Blast furnace tuyere small sleeve damage monitoring method and system |
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2020
- 2020-10-30 CN CN202011194097.6A patent/CN112458222A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN2318228Y (en) * | 1997-12-08 | 1999-05-12 | 张露 | Blast-furnace tuyere small leak detector |
| CN206127341U (en) * | 2016-10-25 | 2017-04-26 | 唐山钢铁国际工程技术股份有限公司 | Blast furnace stave monitoring system that leaks |
| CN111518975A (en) * | 2020-06-16 | 2020-08-11 | 攀钢集团西昌钢钒有限公司 | Blast furnace tuyere small sleeve damage monitoring method and system |
Non-Patent Citations (1)
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| 冯家全等: "高炉冷却水热负荷在线监测系统的应用", 《山东冶金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836588A (en) * | 2022-04-25 | 2022-08-02 | 江苏沙钢集团有限公司 | Positioning method and monitoring system for water leakage of blast furnace tuyere |
| CN114836588B (en) * | 2022-04-25 | 2023-11-14 | 江苏沙钢集团有限公司 | Positioning method and monitoring system for water leakage of blast furnace tuyere |
| CN116334331A (en) * | 2023-03-31 | 2023-06-27 | 湖南德尚源耐磨工业有限公司 | Blast furnace tuyere device, tuyere small sleeve, tuyere medium sleeve and energy-saving method thereof |
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Application publication date: 20210309 |
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