CN111336145A - Submerged arc furnace electrode pressure discharge hydraulic system - Google Patents
Submerged arc furnace electrode pressure discharge hydraulic system Download PDFInfo
- Publication number
- CN111336145A CN111336145A CN202010210527.2A CN202010210527A CN111336145A CN 111336145 A CN111336145 A CN 111336145A CN 202010210527 A CN202010210527 A CN 202010210527A CN 111336145 A CN111336145 A CN 111336145A
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- China
- Prior art keywords
- type brake
- pressure
- oil cylinder
- band
- pressure relief
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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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
- H05B7/103—Mountings, supports or terminals with jaws
- H05B7/105—Mountings, supports or terminals with jaws comprising more than two jaws equally spaced along circumference, e.g. ring holders
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention provides a submerged arc furnace electrode pressure relief hydraulic system, which belongs to the technical field of submerged arc furnaces and comprises an upper band-type brake, a lower band-type brake and a pressure relief oil cylinder arranged between the upper band-type brake and the lower band-type brake, wherein the pressure relief oil cylinder is communicated with a hydraulic station system, and a ball valve, a stop valve, a pressure relief valve, an overflow valve and an electromagnetic reversing valve are arranged between the hydraulic station system and the pressure relief oil cylinder so as to reduce the oil pressure conveyed to the pressure relief oil cylinder. According to the invention, the oil pressure of the pressure-relief oil cylinder is reduced to 3-4MPa, and the pressure-relief oil cylinder starts to drive the upper band-type brake to rise only when the upper band-type brake is opened under the PLC operation instruction, so that the three-phase electrode of the submerged arc furnace can be effectively protected, the electrode fracture caused by the out-of-control band-type brake on the three-phase electrode is avoided, the electrode resource is saved, and the production cost is reduced.
Description
Technical Field
The invention belongs to the technical field of submerged arc furnaces, and particularly relates to a submerged arc furnace electrode pressure discharge hydraulic system.
Background
The submerged arc furnace is an industrial electric furnace, mainly used for producing important industrial raw materials and chemical raw materials such as calcium carbide in the metallurgical industry, such as: ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicomanganese and other ferroalloys. The industrial silicon furnace uses a semi-graphite carbon electrode, and the carbon electrode is continuously consumed in the smelting process, so that the electrode is required to be pressed and released, the consumed part of the carbon electrode can be timely supplemented, and the length of the electrode working end embedded into furnace burden is ensured to meet the furnace operation process requirement.
In the prior art, each electrode is provided with a set of electrode pressing and releasing device, the device consists of a hydraulic mechanical band-type brake and a hydraulic oil cylinder, the hydraulic mechanical band-type brake consists of an upper band-type brake and a lower band-type brake, the hydraulic oil cylinder is arranged between the upper band-type brake and the lower band-type brake, and the working pressure and the working speed of the hydraulic oil cylinder are 12MPa and 0.5m/min respectively.
The whole electrode pressing and releasing process comprises the following steps: the method comprises the steps that firstly, an upper band-type brake is opened, the upper band-type brake is tightly held after the upper band-type brake rises to a set position, then a lower band-type brake is opened (simultaneously, a pressure ring is loosened), at the moment, a hydraulic oil cylinder descends, a band-type electrode of the upper band-type brake descends synchronously, and the lower band-type brake is tightly held again after the upper band-type brake is in place (simultaneously, the pressure ring is tightly held).
In the process of implementing the invention, the inventor finds that the existing electrode pressure release device at least has the following problems:
the existing electrode pressing and releasing device can cause the situation that an upper contracting brake cannot be opened in the pressing and releasing descending process, so that a hydraulic oil cylinder is easy to break an electrode, the loss of a carbon electrode is caused, and the production cost is increased.
Disclosure of Invention
Based on the background problem, the invention aims to provide a submerged arc furnace electrode pressure relief hydraulic system to overcome the defect that the electrode is easy to break in the prior art, so that carbon electrode resources are saved, and the production cost is reduced.
In order to achieve the above purpose, the technical solution provided by the embodiment of the present invention is:
submerged arc furnace electrode pressure is put hydraulic system, including last band-type brake, lower band-type brake and setting up go up the band-type brake and put the hydro-cylinder with the pressure between the band-type brake down, pressure is put hydro-cylinder and hydraulic pressure station system intercommunication, hydraulic pressure station system and pressure are put and are equipped with ball valve, stop valve, relief pressure valve, overflow valve and electromagnetic directional valve between the hydro-cylinder to reduce and carry to the oil pressure of pressure and put hydro-cylinder department.
The total oil pressure of the hydraulic station system is 9-12MPa, and the oil pressure of the pressure-relief oil cylinder is 3-4 MPa.
In one embodiment, three pressure-releasing oil cylinders are arranged between the upper band-type brake and the lower band-type brake, and the telescopic ends of the three pressure-releasing oil cylinders are connected with the upper band-type brake.
In one embodiment, the upper band-type brake and the lower band-type brake are both provided with radial limit switches along the radial direction.
Preferably, the number of the radial limit switches is three, and the three radial limit switches are uniformly distributed in an annular shape.
Compared with the prior art, the invention has the following effects:
1. according to the invention, the oil pressure of the pressure-relief oil cylinder is reduced to 3-4MPa, and the pressure-relief oil cylinder starts to drive the upper band-type brake to rise only when the upper band-type brake is opened under the PLC operation instruction, so that the three-phase electrode of the submerged arc furnace can be effectively protected, the electrode fracture caused by the out-of-control band-type brake on the three-phase electrode is avoided, the carbon electrode resource is saved, and the production cost is reduced.
2. According to the invention, the three radial limit switches are uniformly distributed in an annular shape in the circumferential direction of the upper band-type brake and the lower band-type brake, and when the radial limit switches cannot send opening signals of the upper band-type brake and the lower band-type brake on time, the next action cannot be carried out, so that equipment accidents and electrode accidents are effectively avoided.
Drawings
FIG. 1 is a schematic diagram of an electrode pressure relief hydraulic system of a submerged arc furnace in an embodiment of the invention;
fig. 2 is a schematic diagram of the position of the radial switch in the embodiment of the present invention.
Detailed Description
In order to overcome the defect that an electrode is easy to break in the conventional electrode pressure release device, the embodiment of the invention provides an electrode pressure release hydraulic system for a submerged arc furnace, which can effectively protect a three-phase electrode of the submerged arc furnace and avoid the occurrence of electrode fracture caused by out-of-control upper and lower band-type brakes of the three-phase electrode.
As shown in fig. 1, the submerged arc furnace electrode pressure release hydraulic system comprises an upper band-type brake 1, a lower band-type brake 2 and a pressure release oil cylinder 3 arranged between the upper band-type brake 1 and the lower band-type brake 2, wherein the upper band-type brake 1 is connected with the upper band-type brake oil cylinder 1-1, the upper band-type brake 1 controls the brake shoe of the upper band-type brake 1 to be opened and tightly held through the upper band-type brake oil cylinder 1-1, the lower band-type brake 2 is connected with the lower band-type brake oil cylinder 2-1, and the lower band-type brake 2 controls the brake shoe of the lower band-type brake 2 to be opened and.
The flexible end of pressure-releasing oil cylinder 3 with go up band-type brake 1 and be connected to band-type brake 1 reciprocates in the drive, and is specific, the pressure-releasing oil cylinder 3 of this embodiment is equipped with threely, three 3 annular evenly distributed of pressure-releasing oil cylinder to realize going up band-type brake 1's reciprocating steadily. It should be noted that, the three pressure-release cylinders 3 are required to ensure consistent actions, that is, the three pressure-release cylinders 3 are required to be at the upper limit position or the lower limit position at the same time.
In this embodiment, the pressure-releasing oil cylinder 3 is communicated with a hydraulic station system through a pipeline, and a ball valve 4, a pressure reducing valve 5, a stop valve 6, an overflow valve and an electromagnetic directional valve 7 are arranged on the pipeline between the hydraulic station system and the pressure-releasing oil cylinder 3 to reduce the oil pressure delivered to the pressure-releasing oil cylinder 3.
Specifically, the total oil pressure of the hydraulic station system is 9-12MPa, the oil pressure is reduced to 3-4MPa after being adjusted by the high-pressure ball valve 4, the pressure reducing valve 5 and the stop valve 6, and then the oil is conveyed to the pressure relief oil cylinder 3 through the overflow valve and the electromagnetic directional valve 7. According to the normal PLC pressure release program, the time for completely opening the band-type brake 1 on each phase electrode 100 is about 15 seconds, when the oil pressure of the pressure release oil cylinder 3 is 9-12Mpa, under the PLC operation instruction, the upper band-type brake 1 is not opened yet, the oil pressure of the pressure release oil cylinder 3 is raised instantly, strong hard impact is caused to the upper band-type brake 1, and the carbon electrode 100 is broken between the upper band-type brake and the lower band-type brake. According to the embodiment of the invention, when the oil pressure of the pressure-release oil cylinder 3 is reduced to 3-4Mpa, the pressure-release oil cylinder 3 starts to rise under the PLC operation instruction and when the upper band-type brake 1 is opened, so that the pressure-release safety of the electrode is effectively ensured.
In order to further avoid appearing the phenomenon that electrode 100 is broken, as shown in fig. 2, go up band-type brake 1 and radially be equipped with first radial limit switch 101, first radial limit switch 101 is equipped with threely, and is three first radial limit switch 101 annular evenly distributed is in last band-type brake 1's circumference, band-type brake 2 department is radially equipped with the radial switch of second down, the radial limit switch of second is equipped with threely, and is three the radial limit switch annular evenly distributed of second is in band-type brake 2's circumference down, first radial limit switch 101 and the radial limit switch of second all are connected with the PLC control system electricity.
When the upper band-type brake 1 is completely opened, one of the first limit switches 101 acts and transmits a signal to the PLC system, the PLC system receives the signal, the pressure release oil cylinder 3 is controlled to extend to drive the upper band-type brake 1 to ascend, when the upper band-type brake 1 ascends to a specified position, the PLC system controls the upper band-type brake 1 to tightly hold the electrode 100 and controls the lower band-type brake 2 to open, meanwhile, the pressure ring oil cylinder 300 drives the pressure ring 200 to loosen, when the lower band-type brake 2 is completely opened, one of the second limit switches acts and transmits the signal to the PLC system, the PLC system receives the signal, the pressure release oil cylinder 3 is controlled to contract to drive the upper band-type brake 1 and the electrode 100 to synchronously descend, after the pressure ring 2 descends to the specified position, the lower band-type brake 2 is controlled to tightly hold the electrode 100, meanwhile, the pressure ring.
When the radial limit switch cannot send the upper and lower band-type brake opening signals on time, the next action cannot be carried out, so that equipment accidents and electrode accidents are effectively avoided.
Further, the time of single pressure release is about 3 minutes, and in specific implementation, the upper band-type brake can be judged to be opened and a next procedure can be executed under the condition that the pressure, the time and the limit are simultaneously met.
It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (5)
1. The submerged arc furnace electrode pressure relief hydraulic system comprises an upper band-type brake, a lower band-type brake and a pressure relief oil cylinder arranged between the upper band-type brake and the lower band-type brake, and is characterized in that,
the pressure-releasing oil cylinder is communicated with a hydraulic station system, and a ball valve, a stop valve, a pressure-reducing valve, an overflow valve and an electromagnetic directional valve are arranged between the hydraulic station system and the pressure-releasing oil cylinder so as to reduce the oil pressure conveyed to the pressure-releasing oil cylinder.
2. The submerged arc furnace electrode pressure relief hydraulic system according to claim 1, characterized in that the total oil pressure of the hydraulic station system is 9-12MPa, and the oil pressure at the pressure relief oil cylinder is 3-4 MPa.
3. The submerged arc furnace electrode pressure relief hydraulic system according to claim 2, characterized in that three pressure relief cylinders are arranged between the upper band-type brake and the lower band-type brake, and the telescopic ends of the three pressure relief cylinders are connected with the upper band-type brake.
4. The submerged arc furnace electrode pressure relief hydraulic system according to claim 1, characterized in that the upper band-type brake and the lower band-type brake are both provided with radial limit switches in the radial direction.
5. The submerged arc furnace electrode pressure relief hydraulic system according to claim 4, characterized in that there are three radial limit switches, and the three radial limit switches are evenly distributed annularly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210527.2A CN111336145A (en) | 2020-03-24 | 2020-03-24 | Submerged arc furnace electrode pressure discharge hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210527.2A CN111336145A (en) | 2020-03-24 | 2020-03-24 | Submerged arc furnace electrode pressure discharge hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111336145A true CN111336145A (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010210527.2A Pending CN111336145A (en) | 2020-03-24 | 2020-03-24 | Submerged arc furnace electrode pressure discharge hydraulic system |
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| Country | Link |
|---|---|
| CN (1) | CN111336145A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115942A (en) * | 2006-11-02 | 2008-05-22 | Hitachi Constr Mach Co Ltd | Hydraulic driving device of working machine |
| CN202889688U (en) * | 2012-11-19 | 2013-04-17 | 云南文山斗南锰业股份有限公司 | Hydraulic control device for submerged arc furnace electrode |
| CN202928368U (en) * | 2012-10-18 | 2013-05-08 | 北京首特冶金设备技术有限公司 | Feeding system in front of furnace |
| CN203537594U (en) * | 2013-09-01 | 2014-04-09 | 钱学君 | Shell-less self baking electrode system |
| CN204014147U (en) * | 2014-05-20 | 2014-12-10 | 宜兴市宇龙电炉成套设备有限公司 | Machinery is held the progressive downward putting device of electrode tightly |
| CN204115613U (en) * | 2014-07-08 | 2015-01-21 | 嘉峪关大友企业公司铁合金厂 | A kind of device measuring electrodes in mine hot stove Pressure Slipping Volume |
| CN104427673A (en) * | 2013-09-01 | 2015-03-18 | 钱学君 | Caseless self-baking electrode system |
| CN205473364U (en) * | 2016-01-18 | 2016-08-17 | 艾能赛克机械设备(江苏)有限公司 | Portable shuttle arm backup pad |
| CN109439901A (en) * | 2018-11-20 | 2019-03-08 | 宁夏贺兰山冶金有限公司 | High silicon silicozirconium smelting system |
-
2020
- 2020-03-24 CN CN202010210527.2A patent/CN111336145A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115942A (en) * | 2006-11-02 | 2008-05-22 | Hitachi Constr Mach Co Ltd | Hydraulic driving device of working machine |
| CN202928368U (en) * | 2012-10-18 | 2013-05-08 | 北京首特冶金设备技术有限公司 | Feeding system in front of furnace |
| CN202889688U (en) * | 2012-11-19 | 2013-04-17 | 云南文山斗南锰业股份有限公司 | Hydraulic control device for submerged arc furnace electrode |
| CN203537594U (en) * | 2013-09-01 | 2014-04-09 | 钱学君 | Shell-less self baking electrode system |
| CN104427673A (en) * | 2013-09-01 | 2015-03-18 | 钱学君 | Caseless self-baking electrode system |
| CN204014147U (en) * | 2014-05-20 | 2014-12-10 | 宜兴市宇龙电炉成套设备有限公司 | Machinery is held the progressive downward putting device of electrode tightly |
| CN204115613U (en) * | 2014-07-08 | 2015-01-21 | 嘉峪关大友企业公司铁合金厂 | A kind of device measuring electrodes in mine hot stove Pressure Slipping Volume |
| CN205473364U (en) * | 2016-01-18 | 2016-08-17 | 艾能赛克机械设备(江苏)有限公司 | Portable shuttle arm backup pad |
| CN109439901A (en) * | 2018-11-20 | 2019-03-08 | 宁夏贺兰山冶金有限公司 | High silicon silicozirconium smelting system |
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Application publication date: 20200626 |