CN113738715B - Lifting hydraulic device for LF furnace electrode - Google Patents
Lifting hydraulic device for LF furnace electrode Download PDFInfo
- Publication number
- CN113738715B CN113738715B CN202110926094.5A CN202110926094A CN113738715B CN 113738715 B CN113738715 B CN 113738715B CN 202110926094 A CN202110926094 A CN 202110926094A CN 113738715 B CN113738715 B CN 113738715B
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- Prior art keywords
- valve
- phase
- proportional valve
- phase proportional
- pressure ball
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- 238000012423 maintenance Methods 0.000 description 7
- 238000003723 Smelting Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/025—Pressure reducing valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to the technical field of metallurgical production, in particular to a lifting hydraulic device for an LF furnace electrode, wherein a plug oil cylinder A, a plug oil cylinder B and a plug oil cylinder C are respectively correspondingly connected with a phase proportional valve A, a phase proportional valve B and a phase proportional valve C, and a phase proportional valve D and a manual reversing valve are arranged at any position outside the phase proportional valve A and the phase proportional valve C in parallel; in the invention, during production, one electrode of the failed phase comparison valve A, phase comparison valve B and phase comparison valve C is switched to the standby valve group at any time, so that the failure equipment of the unit components is realized without waiting for stopping the machine, and the manual lifting and descending are realized under the emergency condition of complete power failure.
Description
Technical Field
The invention relates to the technical field of metallurgical production, in particular to a lifting hydraulic device for an LF furnace electrode.
Background
The LF furnace refers to a refining furnace in a steel plant, and when the LF furnace in the steel plant is produced, the phenomenon that one electrode of the LF furnace does not act or acts and fails, so that the whole smelting rhythm is disturbed, the faults are difficult to check and judge, and the online maintenance operation consumes long time and seriously affects the smelting efficiency; the original LF furnace electrode lifting hydraulic device has only A, B, C three groups of control units, and once one of the control units has no action or is in failure, the whole smelting process is interrupted, and the problems of maintenance, production cost and the like are increased.
Disclosure of Invention
The invention aims to solve the problem that the hydraulic components of the single-phase electrode must be shut down for maintenance after the failure, solve the problem that the hydraulic components cannot be maintained on line, prevent the occurrence of accidents that the electrode equipment cannot be lifted due to hydraulic outage and save a large amount of shutdown maintenance time.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a lifting hydraulic device for an LF furnace electrode, comprising: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) respectively, and the phase proportional valve D (4) and the manual reversing valve (7) are arranged at any position outside the phase proportional valve A (8) and the phase proportional valve C (10) in parallel.
The technical scheme of the invention is further improved as follows: the phase proportion valve D (4) is respectively communicated with the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19) through the high-pressure ball valve D (5).
The technical scheme of the invention is further improved as follows: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) through the high-pressure ball valve a (20), the high-pressure ball valve B (21) and the high-pressure ball valve C (22) respectively.
The technical scheme of the invention is further improved as follows: the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with the manual reversing valve (7).
The technical scheme of the invention is further improved as follows: the main pressure reducing valve (6) is respectively connected with the phase proportional valve D (4), the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10).
The technical scheme of the invention is further improved as follows: the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with the phase proportional valve D (4) through the auxiliary pressure reducing valve A (14), the auxiliary pressure reducing valve B (15) and the auxiliary pressure reducing valve C (16).
The technical scheme of the invention is further improved as follows: the phase proportion valve A (8) is connected with the high-pressure ball valve A (17) and the high-pressure ball valve a (20) through the right-angle one-way valve A (11).
The technical scheme of the invention is further improved as follows: the phase proportion valve B (9) is connected with the high-pressure ball valve B (18) and the high-pressure ball valve B (21) through the right-angle one-way valve B (12).
The technical scheme of the invention is further improved as follows: the phase proportion valve C (10) is connected with the high-pressure ball valve C (19) and the high-pressure ball valve C (22) through the right-angle one-way valve C (13).
Compared with the prior art, the lifting hydraulic device for the LF furnace electrode has the following beneficial effects:
1. the invention provides a lifting hydraulic device for an LF furnace electrode, which can switch one electrode of a failed phase-comparison valve A, a failed phase-comparison valve B and a failed phase-comparison valve C to a standby valve group at any time during production, so that the failure equipment of a unit component is realized without waiting for stopping, and the manual lifting and descending are realized under the emergency condition of complete power failure.
2. The invention provides a lifting hydraulic device for an LF furnace electrode, which solves the problem that a single-phase electrode hydraulic component must be stopped for maintenance after failure, and cannot be maintained on line, prevents the occurrence of failure in lifting electrode equipment caused by hydraulic outage, and saves a large amount of stop maintenance time.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a lifting hydraulic device for an electrode of an LF furnace according to the present invention.
The marks in the figure: 1-a plug cylinder A; 2-plug cylinder B; 3-plug cylinder C; a 4-phase proportional valve D; 5-a high-pressure ball valve D; 6-a main relief valve; 7-a manual reversing valve; 8-phase proportional valve A; 9-phase proportional valve B; 10-phase proportional valve C; 11-right angle one-way valve A; 12-right angle one-way valve B; 13-right angle one-way valve C; 14-a secondary pressure reducing valve a; 15-a secondary pressure reducing valve B; 16-a secondary pressure reducing valve C; 17-high pressure ball valve A; 18-a high-pressure ball valve B; 19-a high-pressure ball valve C; 20-a high-pressure ball valve a; 21-a high-pressure ball valve b; 22-high pressure ball valve c.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, in the lifting hydraulic device for the LF furnace electrode of the present embodiment, a phase proportioning valve a (8), a phase proportioning valve B (9), and a phase proportioning valve C (10) are correspondingly connected to a plug cylinder a (1), a plug cylinder B (2), and a plug cylinder C (3), and a phase proportioning valve D (4) and a manual reversing valve (7) are arranged in parallel at any position outside the phase proportioning valve a (8) and the phase proportioning valve C (10), respectively; a manual reversing valve (7) is arranged outside the left side of the comparative example A (8) in parallel. A parallel phase proportional valve D (4) is arranged on the right outer side of the comparative example C (10); in the embodiment, one electrode of the failed phase proportion valve A (8), the phase proportion valve B (9) and the phase proportion valve C (10) is switched to the standby valve group at any time, so that the failure equipment of the unit components does not wait for stopping, and the manual lifting and descending are realized under the emergency condition of complete power failure; the problem that the hydraulic components of the single-phase electrode cannot be maintained on line due to the fact that the hydraulic components of the single-phase electrode must be shut down after faults are caused is solved, the problem that accidents of the electrode equipment cannot be lifted due to hydraulic outage is avoided, and a large amount of shutdown maintenance time is saved.
Further, the phase-comparison valve D (4) is respectively communicated with the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19) through the high-pressure ball valve D (5); the phase proportion valve A (8) is connected with the high-pressure ball valve A (17) and the high-pressure ball valve a (20) through the right-angle one-way valve A (11); the phase proportion valve B (9) is connected with the high-pressure ball valve B (18) and the high-pressure ball valve B (21) through the right-angle one-way valve B (12); the phase proportion valve C (10) is connected with the high-pressure ball valve C (19) and the high-pressure ball valve C (22) through the right-angle one-way valve C (13); in the embodiment, by adding the phase proportioning valve D (4), parallel tee joints are formed with pipelines of phase control outlets of the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19), and the high-pressure ball valves are arranged in front of the tee joints, so that switching of oil paths is realized.
Further, the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) through the high-pressure ball valve a (20), the high-pressure ball valve B (21) and the high-pressure ball valve C (22) respectively; the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with the manual reversing valve (7); in the embodiment, the parallel manual reversing valve (7) is added to form communication with a main pipeline of a phase control outlet of the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10), so that the integral lifting or lowering of the three-phase electrode is realized, the hydraulic system of the on-line equipment is ensured to be completely powered off in the smelting process, and the manual emergency operation can be realized; the phase control outlet pipelines of the phase control valve A (8), the phase control valve B (9) and the phase control outlet pipeline of the phase control valve C (10) are communicated with a main pressure oil pipeline, and a high-pressure ball valve a (20), a high-pressure ball valve B (21) and a high-pressure ball valve C (22) are respectively arranged in the middle of the phase control outlet pipeline, so that the lifting and the lowering of a single electrode are manually controlled.
Preferably, the main pressure reducing valve (6) is connected to the phase ratio valve D (4), the phase ratio valve a (8), the phase ratio valve B (9), and the phase ratio valve C (10), respectively.
Preferably, the phase proportional valve a (8), the phase proportional valve B (9), and the phase proportional valve C (10) are connected to the phase proportional valve D (4) through the sub-relief valve a (14), the sub-relief valve B (15), and the sub-relief valve C (16), respectively.
The above embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. A lifting hydraulic device for an LF furnace electrode, comprising: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) respectively, and the phase proportional valve D (4) and the manual reversing valve (7) are arranged at any position outside the phase proportional valve A (8) and the phase proportional valve C (10) in parallel;
the phase proportion valve D (4) is respectively communicated with the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19) through the high-pressure ball valve D (5);
the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with the manual reversing valve (7); the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with the phase proportional valve D (4) through the auxiliary pressure reducing valve A (14), the auxiliary pressure reducing valve B (15) and the auxiliary pressure reducing valve C (16);
the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) through the high-pressure ball valve a (20), the high-pressure ball valve B (21) and the high-pressure ball valve C (22) respectively;
the main pressure reducing valve (6) is respectively connected with the phase proportional valve D (4), the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10).
2. A lifting hydraulic device for an LF furnace electrode according to claim 1, characterized in that: the phase proportion valve A (8) is connected with the high-pressure ball valve A (17) and the high-pressure ball valve a (20) through the right-angle one-way valve A (11).
3. A lifting hydraulic device for an LF furnace electrode according to claim 1, characterized in that: the phase proportion valve B (9) is connected with the high-pressure ball valve B (18) and the high-pressure ball valve B (21) through the right-angle one-way valve B (12).
4. A lifting hydraulic device for an LF furnace electrode according to claim 1, characterized in that: the phase proportion valve C (10) is connected with the high-pressure ball valve C (19) and the high-pressure ball valve C (22) through the right-angle one-way valve C (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110926094.5A CN113738715B (en) | 2021-08-12 | 2021-08-12 | Lifting hydraulic device for LF furnace electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110926094.5A CN113738715B (en) | 2021-08-12 | 2021-08-12 | Lifting hydraulic device for LF furnace electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113738715A CN113738715A (en) | 2021-12-03 |
| CN113738715B true CN113738715B (en) | 2024-02-09 |
Family
ID=78730927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110926094.5A Active CN113738715B (en) | 2021-08-12 | 2021-08-12 | Lifting hydraulic device for LF furnace electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113738715B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09133104A (en) * | 1995-11-10 | 1997-05-20 | Kubota Corp | Hydraulic circuit for moving up and down working equipment |
| CN204985131U (en) * | 2015-09-16 | 2016-01-20 | 中冶南方工程技术有限公司 | LF stove electric pole fluctuation hydraulic control system |
-
2021
- 2021-08-12 CN CN202110926094.5A patent/CN113738715B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09133104A (en) * | 1995-11-10 | 1997-05-20 | Kubota Corp | Hydraulic circuit for moving up and down working equipment |
| CN204985131U (en) * | 2015-09-16 | 2016-01-20 | 中冶南方工程技术有限公司 | LF stove electric pole fluctuation hydraulic control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113738715A (en) | 2021-12-03 |
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