CN220103782U - Automatic control system for submerged arc furnace electrode - Google Patents
Automatic control system for submerged arc furnace electrode Download PDFInfo
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- CN220103782U CN220103782U CN202320652768.1U CN202320652768U CN220103782U CN 220103782 U CN220103782 U CN 220103782U CN 202320652768 U CN202320652768 U CN 202320652768U CN 220103782 U CN220103782 U CN 220103782U
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- Prior art keywords
- lifting
- submerged arc
- arc furnace
- screw rod
- control system
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- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 29
- 238000000034 method Methods 0.000 description 8
- 238000003723 Smelting Methods 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Discharge Heating (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model provides an automatic control system of an electrode of a submerged arc furnace, which comprises the following components: the lifting screw rod in the lifting device penetrates through the supporting body to be connected with the holding cylinder; the lifting device includes: the power output end of the transmission device is connected with a lifting screw rod, the lifting screw rod is arranged in the support column, and a hydraulic booster device is arranged between one end of the lifting screw rod extending into the support column and the support column; the transmission device is connected with the lifting driving device. The lifting device with the hydraulic power assist automatically controls the lifting and position adjustment of the electrode, so that the service life of the lifting device and the lifting accuracy are ensured, the stability of an electric arc and the accurate control of the furnace temperature are realized, and the production efficiency and the product quality of the submerged arc furnace are improved.
Description
Technical Field
The utility model relates to the technical field of smelting industry, in particular to an automatic control system for an electrode of an ore smelting furnace.
Background
The electrode is one of the core parts in the submerged arc furnace, and is a main component part of an electric conduction system of the industrial silicon iron furnace and a consumption material in the production of silicon iron. In the ferrosilicon production process, besides being used as a conductor, a small part of the electrodes participate in chemical reactions in the form of carbon.
In the ferrosilicon smelting process, a three-phase electrode in an ore-smelting furnace is inserted into furnace burden, and a secondary side three-phase current of a transformer is input into the furnace through a short net and the three-phase electrode, so that arc heat is generated in a material layer. When current flows through the charge, the charge resistance generates heat. In the process of producing ferrosilicon alloy by an ore smelting furnace, the temperature and stability of the furnace directly influence the quality and energy consumption of the alloy. The electrode load current and the charging power can be adjusted by lifting the electrode, so that the three-phase electrode lifting control plays a vital role in submerged arc furnace production and energy consumption control.
In the prior art, most of the devices are driven by a motor, the worm is driven to a screw rod through a screw nut, and the lifting of a working platform is controlled by the lifting of the screw rod, or the working platform is lifted by a hydraulic device. The problems of the two lifting devices are that: the screw is very heavy in the in-process of operation and bear, and the screw can produce very big pressure to the screw, and long-term use can produce very big harm to screw, screw and worm, and not only life is short, and the degree of accuracy of in-process lift in addition also can drop, influences the production efficiency and the product quality of submerged arc furnace. The hydraulic lifting device also has the above problems. Therefore, an automatic control system for the submerged arc furnace electrode is proposed to solve the above-mentioned problems.
Disclosure of Invention
The utility model provides an automatic control system for an electrode of an ore smelting furnace in order to solve the problems. This submerged arc furnace electrode automatic control system includes: the lifting screw rod in the lifting device penetrates through the supporting body to be connected with the holding cylinder;
the lifting device includes: the power output end of the transmission device is connected with a lifting screw rod, the lifting screw rod is arranged in the support column, and a hydraulic booster device is arranged between one end of the lifting screw rod extending into the support column and the support column; the transmission device is connected with the lifting driving device. And a stay wire displacement sensor is arranged between the holding cylinder and the supporting body. The device mainly aims to realize accurate displacement of the lifting screw, so that remote control can be realized on the basis of position measurement of the lifting screw.
Further, the hydraulic power assisting device comprises an oil cylinder, the plunger end of the oil cylinder is fixedly connected with the top end supporting plate of the supporting column, and a cylinder body, away from the plunger end, of the oil cylinder is connected with the lifting screw rod.
Further, the oil cylinder is connected with a hydraulic station through an oil way, and an overflow valve is arranged on the oil way between the oil cylinder and the hydraulic station. In the ascending and descending processes of the lifting device, the oil cylinder keeps constant pressure to work, and if the instantaneous pressure is too high, the overflow valve can automatically drain the redundant pressure oil.
Further, the transmission device comprises a worm, a screw is connected with the worm in a transmission mode, and the lifting screw rod penetrates through the screw and is in threaded connection. The worm rotates to drive the screw nut to rotate, and the lifting screw rod penetrating through the screw nut rotates up and down under the rotation of the screw nut.
Further, the lifting driving device comprises a driving motor.
Further, the power output end of the driving motor is connected with the worm.
Further, the driving motor is externally connected with a PLC controller.
The utility model has the technical effects that:
1. the stay wire displacement sensor is arranged on the lifting device, and is mainly used for realizing accurate displacement of the lifting screw rod in the lifting device, so that remote control can be realized on the basis of position measurement of the lifting screw rod. Through the stay wire displacement sensor, the displacement of any lifting screw rod in the set time can not reach the expected state, the lifting process is stopped, corresponding faults and alarm signals are output, and the electrode can be accurately inserted into a proper range.
2. The hydraulic power assisting device is added on the basis of the traditional lifting screw device, the lifting screw and the hydraulic power assisting device are installed in the same supporting column, and the lifting screw and the cylinder body of the cylinder, which is far away from the plunger end, are fixedly connected with the lifting screw. In the ascending and descending process of the lifting device, the oil cylinder keeps constant pressure to work, if the instantaneous pressure is too high, the overflow valve can automatically drain redundant pressure oil, the piston rod of the oil cylinder is propped against the supporting plate, under the action of a reaction force, an upward force is given to the cylinder body of the oil cylinder, and the force is transmitted to the lifting screw rod to offset the acting force before the lifting screw rod and the screw nut, so that the bearing force of the worm, the screw nut and the lifting screw rod is reduced, and the service life of the lifting device is prolonged.
Drawings
FIG. 1 is an isometric view of an automatic submerged arc furnace electrode control system according to the present utility model;
FIG. 2 is a front view of an automatic submerged arc furnace electrode control system according to the present utility model;
FIG. 3 is a cross-sectional view of a lifting device according to the present utility model;
in the figure, 100, holding cylinder, 200, support, 300, lifting device, 310, transmission, 311, worm, 312, nut, 320, lifting screw, 330, support column, 340, hydraulic booster, 341, oil cylinder, 342, hydraulic station, 343, overflow valve, 350, drive motor, 360, pull wire displacement sensor.
Detailed Description
Embodiments of the present utility model will be described in detail with reference to fig. 1 to 3.
Referring to fig. 1-3, the submerged arc furnace electrode automatic control system comprises: a holding cylinder 100, a support body 200 and a lifting device 300, wherein a lifting screw 320 in the lifting device 300 passes through the support body 200 to be connected with the holding cylinder 100;
the lifting device includes: the power output end of the transmission device 310 is connected with a lifting screw rod 320, the lifting screw rod 320 is arranged in a supporting column 330, and a hydraulic booster 340 is arranged between one end of the lifting screw rod 320 extending into the supporting column and the supporting column 330; the transmission device 310 is connected with a lifting driving device.
Referring to fig. 3, further, the hydraulic booster 340 includes an oil cylinder 341, a plunger end of the oil cylinder 341 is fixedly connected with a top end support plate of the support column 330, and a cylinder body of the oil cylinder 341 away from the plunger end is connected with the lifting screw 320.
Referring to fig. 3, further, the oil cylinder 341 is connected to a hydraulic station 342 through an oil path, and an overflow valve 343 is installed on the oil path between the oil cylinder 341 and the hydraulic station 342. The oil cylinder 341 keeps constant pressure working during the ascending and descending of the lifting device 300, and if the instantaneous pressure is too high, the overflow valve 343 automatically leaks the excessive pressure oil.
Referring to fig. 3, further, the transmission device 310 includes a worm 311, the worm 311 is connected with a nut 312 in a transmission manner, and the lifting screw 320 passes through the nut 312 and is connected with threads. The worm 311 rotates to drive the screw 312 to rotate, and the lifting screw 320 passing through the screw 312 rotates up and down under the rotation of the screw 312.
Referring to fig. 2, further, the elevation driving means includes a driving motor 350,
referring to fig. 1, further, a power output end of the driving motor 350 is connected to the worm 311.
Referring to fig. 1-2, further, a pull wire displacement sensor 360 is installed between the grip cylinder 100 and the support body 200. The purpose is mainly to realize accurate displacement of the lifting screw 320, so that remote control can be realized on the basis of position measurement of the lifting screw 320.
Further, the driving motor 350 is externally connected with a PLC controller.
Working principle: the three-phase electrode of the submerged arc furnace is inserted into the thick furnace burden, the lifting of each electrode in the submerged arc furnace is independently controlled, and the pressure of the whole hydraulic system is set on the overflow valve 343 according to the preset lifting position of each electrode of the three-phase electrode of the submerged arc furnace, namely the position to be lifted by the lifting device 300. Before the lifting device 300 is started, the hydraulic station 342 is started to supply oil, and when the pressure in the oil cylinder 341 reaches the set pressure, the driving motor 350 of the lifting device can be started. The driving motor 350 is started, the worm 311 in transmission connection with the output end of the driving motor 350 rotates, the worm 311 drives the screw nut 312 to rotate, and the lifting screw 320 penetrating through the screw nut 312 lifts under the rotation of the screw nut 312.
In the ascending and descending process of the lifting device 300, the oil cylinder 341 keeps constant pressure to work (if the instantaneous pressure is too high, the overflow valve can automatically drain excessive pressure oil), the piston rod of the oil cylinder 341 is propped against the supporting plate, under the action of the reaction force, an upward force is given to the cylinder body of the oil cylinder 341, and the force is transmitted to the lifting screw 320 to offset the acting force between the lifting screw 320 and the screw 312, so that the bearing force of the worm 311, the screw 312 and the lifting screw 320 is reduced, and the service life of the lifting device is prolonged. When the lifting device 300 ascends and descends, the stay wire displacement sensor 360 positioned between the holding cylinder 100 and the supporting body 200 measures the displacement of the lifting screw 320 to be transmitted to the PLC controller, and the PLC controller controls the start and stop of the lifting device according to the data transmitted by the stay wire displacement sensor, so that the lifting accuracy is realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present utility model.
Claims (6)
1. An automatic submerged arc furnace electrode control system, comprising: a holding cylinder (100), a support body (200) and a lifting device (300), wherein a lifting screw (320) in the lifting device (300) passes through the support body (200) to be connected with the holding cylinder (100);
the lifting device is characterized by comprising: the power output end of the transmission device (310) is connected with a lifting screw rod (320), the lifting screw rod (320) is installed in the supporting column (330), and a hydraulic power assisting device (340) is installed between one end of the lifting screw rod (320) extending into the supporting column (330) and the supporting column (330); the transmission device (310) is connected with a driving motor (350); a stay wire displacement sensor (360) is arranged between the holding cylinder (100) and the supporting body (200).
2. An automatic submerged arc furnace electrode control system as claimed in claim 1 wherein: the hydraulic power assisting device (340) comprises an oil cylinder (341), wherein the plunger end of the oil cylinder (341) is fixedly connected with the top end supporting plate of the supporting column (330), and a cylinder body of the oil cylinder (341) far away from the plunger end is connected with the lifting screw (320).
3. An automatic submerged arc furnace electrode control system as claimed in claim 2 wherein: the oil cylinder (341) is connected with a hydraulic station (342) through an oil way, and an overflow valve (343) is arranged on the oil way between the oil cylinder (341) and the hydraulic station (342).
4. An automatic submerged arc furnace electrode control system as claimed in claim 1 wherein: the transmission device (310) comprises a worm (311), the worm (311) is in transmission connection with a screw nut (312), and the lifting screw rod (320) penetrates through the screw nut (312) and is in threaded connection.
5. An automatic submerged arc furnace electrode control system as claimed in claim 4 wherein: the power output end of the driving motor (350) is connected with a worm (311) of the transmission device (310).
6. The automatic submerged arc furnace electrode control system according to claim 1, wherein the driving motor (350) is externally connected with a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320652768.1U CN220103782U (en) | 2023-03-29 | 2023-03-29 | Automatic control system for submerged arc furnace electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320652768.1U CN220103782U (en) | 2023-03-29 | 2023-03-29 | Automatic control system for submerged arc furnace electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220103782U true CN220103782U (en) | 2023-11-28 |
Family
ID=88843583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320652768.1U Active CN220103782U (en) | 2023-03-29 | 2023-03-29 | Automatic control system for submerged arc furnace electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220103782U (en) |
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2023
- 2023-03-29 CN CN202320652768.1U patent/CN220103782U/en active Active
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