CN103677008A - Oil circulation air-cooling control system of transformer of submerged arc furnace - Google Patents
Oil circulation air-cooling control system of transformer of submerged arc furnace Download PDFInfo
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- CN103677008A CN103677008A CN201310641190.0A CN201310641190A CN103677008A CN 103677008 A CN103677008 A CN 103677008A CN 201310641190 A CN201310641190 A CN 201310641190A CN 103677008 A CN103677008 A CN 103677008A
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Abstract
The invention discloses an oil circulation air-cooling control system of a transformer of a submerged arc furnace. The oil circulation air-cooling control system of the transformer of the submerged arc furnace comprises an air cooling system, a control device, a temperature sensor, an actuating module, an LCD (liquid crystal display) and an operating module, wherein the air-cooling system comprises a circulating oil system and an air cooler and is connected with the actuating module; the control device comprises a programmable logic controller (PLC), a wireless communication module and a remote controller; the remote controller is wirelessly communicated with the programmable logic controller (PLC) remotely through the wireless communication module; the temperature sensor detects the temperature of oil on the top of an oil tank of the transformer in real time, and transmits acquired oil temperature signals to the programmable logic controller (PLC); and the LCD and the operating module are connected with the programmable logic controller (PLC). The air-cooling control system has a remote control function, an intelligent monitoring function and a manual monitoring function, and can accurately and efficiently control an air-cooling system of the transformer in real time from multiple functions; and long-term normal running of equipment is guaranteed.
Description
Technical field
The invention belongs to voltage device technical field, relate to a kind of oily circulating air cooling control system of ore heat furnace transformer.
Background technology
Mineral hot furnace claims again electric arc electric furnace or resistance electric furnace, is mainly used in reducing and smelting ore, is the industrial furnace that a kind of power consumption is huge.Mineral hot furnace is the duty in long-time continuous operation when smelting operation, must guarantee the normal and stable of operating voltage under its duty, and the normal operation of guarantee mineral hot furnace, improves its work efficiency.Ore heat furnace transformer is the large-scale support equipment of mineral hot furnace most critical, particularly, in the melting stage of smelting ore, voltage device need to keep the highest electric power, in the high-intensity duty of working continuously, could effectively maintain the operating voltage of mineral hot furnace, guarantee the normal operation of mineral hot furnace.
The copper loss producing in operational process due to ore heat furnace transformer and the energy overwhelming majority of iron loss consumption are all converted into heat, have caused Transformer Winding and iron core temperature to raise, and excess Temperature will reduce operational efficiency and the serviceable life of transformer.At present, the forced oil-circulation Directed cooling modes that adopt are alleviated the too high problem of above-mentioned transformer temperature more, this mode is based on one group of cooling device being comprised of cooler body and oil pump, this oil pump couples together by oil pipe and oil tank of transformer, when cooling system moves, the transformer oil of heat by oil pump from the top of oil tank of transformer through oil pipe sucking-off, more cooling through cooler body, then get back to the bottom of fuel tank.Refrigeratory is generally comprised of many copper pipes, and deep fat is at the internal circulation of copper pipe, and carries out heat interchange by heat radiation and the heat eliminating medium outside copper pipe, thereby reaches the effect of cooling.
Transformer cooling system reliability of operation directly affects operational efficiency and the security of transformer.Along with tranformer protection and supervisory system intellectualized reconstruction deepen continuously and perfect, the protection of transformer and monitoring realize digitizing or intellectuality substantially, and the cold do-nothing system of transformer still adopts relay-type control loop to carry out control & monitor mostly.
The water saving fixtures of a kind of arc furnace transformer recycle oil water-cooling system as disclosed in Chinese patent (201020117302.4), the major technique key point of this invention is, at the water inlet pipe place of water cooler, a solenoid valve is set, transformer oil-out place arranges electric contact thermometer, and the contact of electric contact thermometer is serially connected with in the input circuit of solenoid valve.During this transformer work, the electric contact thermometer Real-Time Monitoring outlet oil temperature that recycle oil outlet is installed additional, when monitoring oil temperature higher than 55 ℃, the closing of contact of electric contact thermometer, makes into water cool cycles oil coil; When electric contact thermometer probe temperature is during lower than 45 ℃, automatically close electromagnetic water inlet valve.This device can effectively reduce cooling water amount, guarantees work efficiency and the serviceable life of transformer.
The cold control system of above-mentioned this mode generally consists of loops such as relay, A.C. contactor, auxiliary switches, though can realize part automatic control function, but function is imperfection very, cannot realize Real-Time Monitoring of cold each motor of control system, oil pump operating condition etc.; And there is magnetic circuit interference problem, monitor inaccurate, may there is misoperation, thereby cause Cooler Fault or full cut-off, transformer temperature will sharply rise, until the circuit breaker trip of transformer causes power supply to stop, having a strong impact on the normal operation of mineral hot furnace, more serious meeting causes damage to mineral hot furnace.
Summary of the invention
The problem such as single, the intelligent control degree of control mode that the present invention is directed to the cold control system of existing ore heat furnace transformer is low, failure rate is high, a kind of oily circulating air cooling control system of ore heat furnace transformer is provided, can have guaranteed the long-term safety operation of ore heat furnace transformer.
The present invention is achieved by the following technical solutions:
An oily circulating air cooling control system for ore heat furnace transformer, comprises air cooling system, control device, temperature sensor and execution module; Wherein, described air cooling system includes recycle oil system and air-cooled cooler; Described recycle oil system is mainly comprised of oil pump, oil pipe loop, oil tank of transformer, and described air-cooled cooler is mainly comprised of centrifugal fan, heating radiator; Described air cooling system is connected with execution module; Described control device comprises Programmable Logic Controller PLC, wireless communication module and remote manipulator; Described remote manipulator carries out long-distance radio communication by wireless communication module and Programmable Logic Controller PLC; Described temperature sensor is arranged in oil tank of transformer, in real time oil tank of transformer top-oil temperature is detected, and the oil temperature signal collecting is transferred to Programmable Logic Controller PLC.
In such scheme, described remote manipulator comprises radio signal transceiver; Described radio signal transceiver can receive the oil temperature signal that Programmable Logic Controller PLC sends by wireless communication module, and can be by operating remote telepilot operation signal to Programmable Logic Controller PLC, operated from a distance Programmable Logic Controller is controlled the input amount of the oil pump of air cooling system and centrifugal fan by execution module.
Further, described remote manipulator also comprises signal warning horn; Described signal warning horn, when the oil temperature signal receiving when remote manipulator exceeds the numerical value of setting, can be made audible alarm or vibration alarm.
The present invention has designed, and described air cooling system comprises 4 groups of air-cooled coolers, and every group of air-cooled cooler comprises 1 heating radiator, 2 centrifugal fans.
Further, described centrifugal fan is arranged on the both sides of heating radiator.
Temperature sensor in such scheme is thermocouple temperature sensor.
The present invention is on above scheme basis, and design has increased LCD display and the operational module being connected with Programmable Logic Controller PLC.
Further, described LCD display can record and the oil temperature information of displays temperature sensor transmissions to Programmable Logic Controller PLC; Also can to air cooling system, carry out manual control by operational module input operation parameter, or Programmable Logic Controller PLC is controlled automatically to air cooling system.
Compared with prior art, ore heat furnace transformer oil circulating air cooling control system of the present invention has following beneficial effect:
1. ore heat furnace transformer oil circulating air cooling control system of the present invention has long-range remote control function, operations staff can receive the information of machine operation whenever and wherever possible, apparatus of load ruuning situation is had to alarm function, and can the operation by remote manipulator realize to transformer in time, effectively control, guarantee equipment normal operation.
2. the present invention adopts intelligentized Programmable Logic Controller PLC as the core control part of whole ore heat furnace transformer oil circulating air cooling control system, the Transformer Operation Status information that adopts LCD display to collect Programmable Logic Controller PLC shows and record, and can realize to air cooling system immediately, automatically control accurately and efficiently by operational module setup parameter, improved intellectuality and the practicality of air cooler control system of the present invention.
3. the present invention has realized Remote, automatic monitoring and has monitored on the spot effective combination of three kinds of modes, and the ruuning situation information of Transformer Forced-Air Cooling System is carried out to feedback regulation in mode by all kinds of means, has increased the reliability of air cooler control system of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural principle block diagram of ore heat furnace transformer oil circulating air cooling control system of the present invention.
Fig. 2 is the structural representation of ore heat furnace transformer oil circulating air cooling system of the present invention.
Shown in Fig. 2: 1-air-cooled cooler, 2-oil pump, 3-oil pipe loop, 4-oil tank of transformer, 5-heating radiator, 6-centrifugal fan.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to the scope that embodiment represents.
By reference to the accompanying drawings 1 and 2, a kind of oily circulating air cooling control system of ore heat furnace transformer, comprises air cooling system, control device, temperature sensor and execution module.Wherein:
Air cooling system is set to include recycle oil system and air-cooled cooler, and is connected with execution module.Recycle oil system is mainly comprised of oil pump 2, oil pipe loop 3, oil tank of transformer 4, and during running, the upper strata oil in oil tank of transformer 4 through oil pipe sucking-off, then is got back to the bottom of fuel tank 4 by oil pump after refrigeratory is cooling, has formed a circulating oil path.Air-cooled cooler is mainly comprised of centrifugal fan 6, heating radiator 5, the present embodiment adopts the heating radiator being comprised of many copper pipes, the area contacting with copper pipe to increase deep fat, makes can carry out fully heat interchange between deep fat and cooling air, has improved the radiating rate of transformer.
Control device setting includes Programmable Logic Controller PLC, wireless communication module and remote manipulator, and this remote manipulator can carry out long-distance radio communication by wireless communication module and Programmable Logic Controller PLC.
Temperature sensor is arranged in oil tank of transformer, in real time oil tank of transformer top-oil temperature is detected, and the oil temperature signal collecting is transferred to Programmable Logic Controller PLC.
As further illustrating of the present embodiment, remote manipulator is set to include radio signal transceiver, this radio signal transceiver can receive the oil temperature signal that Programmable Logic Controller PLC sends by wireless communication module, and can be by operating remote telepilot operation signal to Programmable Logic Controller PLC, operated from a distance Programmable Logic Controller is controlled the input amount of each oil pump of air cooling system and centrifugal fan automatically by execution module.
As illustrating further of this enforcement, remote manipulator is also set to include signal warning horn, this signal warning horn, when the oil temperature signal receiving when remote manipulator exceeds the numerical value of setting, can be made audible alarm or vibration alarm, so that instant alerts staff.
In the present embodiment, air cooling system is set to include 4 groups of air-cooled coolers 1, and every group of air-cooled cooler comprises 5,2 centrifugal fans 6 of 1 heating radiator, and described centrifugal fan 6 is arranged on the both sides of heating radiator 5.
In the present embodiment, temperature sensor adopts the temperature sensor of thermojunction type.
As further improvement of this embodiment, the air cooler control system of above embodiment is provided with LCD display and the operational module being connected with Programmable Logic Controller PLC.
Further, this LCD display can record and the oil temperature information of displays temperature sensor transmissions to Programmable Logic Controller PLC; Also can to air cooling system, carry out manual control by operational module input operation parameter, or Programmable Logic Controller PLC is controlled automatically to air cooling system.
The specific works process of the ore heat furnace transformer oil circulating air cooling control system that above embodiment provides is: after the operation of the transformer oil circulation system, the temperature sensor being arranged in oil tank of transformer will detect upper strata oil temperature in real time, and the oil temperature signal collecting is transferred to Programmable Logic Controller PLC, then with digital form, be presented in LCD display or by radio signal and be sent to remote manipulator.When oil temperature signal exceeds the normal working oil temperature of transformer setting, remote manipulator or LCD display will be made caution signal, so that staff controls each oil pump of air cooling system and blower fan input amount immediately.
According to the relevant regulations of transformer operation, deteriorated too fast for preventing transformer oil, upper strata oil temperature generally should not be over 85 ℃.Therefore, in real work, when upper strata oil temperature is below 55 ℃ time, air cooler control system is not made alarm, drops into 1 group of refrigeratory work; When upper strata oil temperature is during at 55～65 ℃, air cooler control system is made 1 grade of alarm, drops into 2 groups of refrigeratorys work; When upper strata oil temperature is during at 65～75 ℃, air cooler control system is made 2 grades of alarms, drops into 3 groups of refrigeratorys work; When upper strata oil temperature is when more than 75 ℃, air cooler control system is made 3 grades of alarms, drops into whole refrigeratory work.More than can according to actual conditions take Remote, on the spot manually, control mode automatically.
Claims (8)
1. an oily circulating air cooling control system for ore heat furnace transformer, comprises air cooling system, control device, temperature sensor and execution module; It is characterized in that:
Described air cooling system includes recycle oil system and air-cooled cooler; Described recycle oil system is mainly comprised of oil pump, oil pipe loop, oil tank of transformer, and described air-cooled cooler is mainly comprised of centrifugal fan, heating radiator; Described air cooling system is connected with execution module;
Described control device comprises Programmable Logic Controller PLC, wireless communication module and remote manipulator; Described remote manipulator carries out long-distance radio communication by wireless communication module and Programmable Logic Controller PLC;
Described temperature sensor is arranged in oil tank of transformer, in real time oil tank of transformer top-oil temperature is detected, and the oil temperature signal collecting is transferred to Programmable Logic Controller PLC.
2. the oily circulating air cooling control system of ore heat furnace transformer according to claim 1, is characterized in that described remote manipulator comprises radio signal transceiver; Described radio signal transceiver can receive the oil temperature signal that Programmable Logic Controller PLC sends by wireless communication module, and can be by operating remote telepilot operation signal to Programmable Logic Controller PLC, operated from a distance Programmable Logic Controller is controlled the input amount of the oil pump of air cooling system and centrifugal fan automatically by execution module.
3. the oily circulating air cooling control system of ore heat furnace transformer according to claim 2, is characterized in that described remote manipulator also comprises signal warning horn; Described signal warning horn, when the oil temperature signal receiving when remote manipulator exceeds the numerical value of setting, can be made audible alarm or vibration alarm.
4. the oily circulating air cooling control system of ore heat furnace transformer according to claim 1, is characterized in that described air cooling system comprises 4 groups of air-cooled coolers, and every group of air-cooled cooler comprises 1 heating radiator, 2 centrifugal fans.
5. the oily circulating air cooling control system of ore heat furnace transformer according to claim 4, is characterized in that described centrifugal fan is arranged on the both sides of heating radiator.
6. the oily circulating air cooling control system of ore heat furnace transformer according to claim 1, is characterized in that described temperature sensor is thermocouple temperature sensor.
7. according to the oily circulating air cooling control system of the arbitrary described ore heat furnace transformer of claim 1 to 6, characterized by further comprising the LCD display and the operational module that are connected with Programmable Logic Controller PLC.
8. the oily circulating air cooling control system of ore heat furnace transformer according to claim 7, is characterized in that, described LCD display can record and the oil temperature information of displays temperature sensor transmissions to Programmable Logic Controller PLC; Also can to air cooling system, carry out manual control by operational module input operation parameter, or Programmable Logic Controller PLC is controlled automatically to air cooling system.
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| CN201310641190.0A CN103677008A (en) | 2013-12-03 | 2013-12-03 | Oil circulation air-cooling control system of transformer of submerged arc furnace |
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| CN201310641190.0A CN103677008A (en) | 2013-12-03 | 2013-12-03 | Oil circulation air-cooling control system of transformer of submerged arc furnace |
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Cited By (9)
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| CN104008856A (en) * | 2014-05-08 | 2014-08-27 | 国家电网公司 | Main transformer oil flow guide microcirculation device and using method |
| CN105045305A (en) * | 2015-07-21 | 2015-11-11 | 国家电网公司 | Transformer oil temperature monitoring system with temperature prediction function |
| CN106169358A (en) * | 2016-08-31 | 2016-11-30 | 江苏恒炫电气有限公司 | A kind of heat dissipating device of transformer and heat radiation intelligence control system thereof |
| CN106783036A (en) * | 2016-12-14 | 2017-05-31 | 内蒙古工业大学 | A kind of power transformer forced oil-circulated air-cooled system |
| CN108008669A (en) * | 2017-11-14 | 2018-05-08 | 安徽徽远成电气科技股份有限公司 | System is protected in a kind of detection applied to transformer |
| CN108511152A (en) * | 2018-06-27 | 2018-09-07 | 合肥云智物联科技有限公司 | A kind of roadside transformer safety protective device |
| CN108597764A (en) * | 2018-05-31 | 2018-09-28 | 国家电网公司 | Transformer cooler control method and device |
| CN113380501A (en) * | 2021-06-03 | 2021-09-10 | 国网江苏省电力有限公司南通供电分公司 | Transformer temperature control system and control method thereof |
| CN113389629A (en) * | 2021-07-31 | 2021-09-14 | 济南和利时自动化工程有限公司 | Control system for horizontal radiator of diesel generating set |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104008856A (en) * | 2014-05-08 | 2014-08-27 | 国家电网公司 | Main transformer oil flow guide microcirculation device and using method |
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| CN106169358A (en) * | 2016-08-31 | 2016-11-30 | 江苏恒炫电气有限公司 | A kind of heat dissipating device of transformer and heat radiation intelligence control system thereof |
| CN106783036A (en) * | 2016-12-14 | 2017-05-31 | 内蒙古工业大学 | A kind of power transformer forced oil-circulated air-cooled system |
| CN108008669A (en) * | 2017-11-14 | 2018-05-08 | 安徽徽远成电气科技股份有限公司 | System is protected in a kind of detection applied to transformer |
| CN108597764A (en) * | 2018-05-31 | 2018-09-28 | 国家电网公司 | Transformer cooler control method and device |
| CN108511152A (en) * | 2018-06-27 | 2018-09-07 | 合肥云智物联科技有限公司 | A kind of roadside transformer safety protective device |
| CN113380501A (en) * | 2021-06-03 | 2021-09-10 | 国网江苏省电力有限公司南通供电分公司 | Transformer temperature control system and control method thereof |
| CN113380501B (en) * | 2021-06-03 | 2022-08-19 | 国网江苏省电力有限公司南通供电分公司 | Transformer temperature control system and control method thereof |
| CN113389629A (en) * | 2021-07-31 | 2021-09-14 | 济南和利时自动化工程有限公司 | Control system for horizontal radiator of diesel generating set |
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Application publication date: 20140326 |