GB1238882A - - Google Patents
Info
- Publication number
- GB1238882A GB1238882A GB1238882DA GB1238882A GB 1238882 A GB1238882 A GB 1238882A GB 1238882D A GB1238882D A GB 1238882DA GB 1238882 A GB1238882 A GB 1238882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- furnace
- pressure
- probe
- switch
- air supply
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
- G01F23/185—Indicating, recording or alarm devices actuated electrically for discrete levels
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
1,238,882. Indicating charge levels; controlling charging, BRITISH CAST IRON RESEARCH ASSOCIATION. 23 Oct., 1969 [6 Aug., 1968], No. 37354/68. Heading F4B. The pressure in a shaft furnace is used to indicate when a fresh charge is needed. A hollow probe 3 penetrates the furnace wall just above the level at which recharging is necessary. The probe has a restriction 4 at the furnace end and is connected to a controlled pressure air supply at the other end. Since the pressure at the furnace end is a minimum when the probe is above the charge level, a pressure switch 9 can be arranged to switch on a green light 11 when a recharge is necessary, a red light 10 being on when the furnace is full. Two-way valves 13, 15 are arranged so that a second furnace is connected to the pressure switch 9 and indicators 10, 11. In a modification, the air supply to the probe is omitted, the pressure in the furnace operating the switch. In this case, a connection to a pressure air supply is provided to blow obstructions out of the probe. The pressure switch 9 may be connected to prevent premature recharging of the furnace, and to initiate recharging when the charge level falls.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3735468 | 1968-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238882A true GB1238882A (en) | 1971-07-14 |
Family
ID=10395825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1238882D Expired GB1238882A (en) | 1968-08-06 | 1968-08-06 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1238882A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572096A1 (en) * | 1984-10-19 | 1986-04-25 | Usinor | METHOD AND INSTALLATION FOR THE CONTINUOUS MONITORING OF BLAST FURNACES |
-
1968
- 1968-08-06 GB GB1238882D patent/GB1238882A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572096A1 (en) * | 1984-10-19 | 1986-04-25 | Usinor | METHOD AND INSTALLATION FOR THE CONTINUOUS MONITORING OF BLAST FURNACES |
| EP0181245A1 (en) * | 1984-10-19 | 1986-05-14 | UNION SIDERURGIQUE DU NORD ET DE L'EST DE LA FRANCE par abréviation "USINOR" | Process and apparatus for continuously controlling blast furnaces |
| US4668285A (en) * | 1984-10-19 | 1987-05-26 | Usinor | Process and installation for the continuous control of a blast-furnace |
| AU581029B2 (en) * | 1984-10-19 | 1989-02-09 | Union Siderurgique Du Nord Et De L'est De La France (Usinor) S.A. | Process and installation for the continuous control of blast-furnaces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |