CN202734585U - Pulse-combustion furnace pressure controlling device - Google Patents
Pulse-combustion furnace pressure controlling device Download PDFInfo
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- CN202734585U CN202734585U CN 201220259322 CN201220259322U CN202734585U CN 202734585 U CN202734585 U CN 202734585U CN 201220259322 CN201220259322 CN 201220259322 CN 201220259322 U CN201220259322 U CN 201220259322U CN 202734585 U CN202734585 U CN 202734585U
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Abstract
The utility model discloses a pulse-combustion furnace pressure controlling device and belongs to the technical field of pulse-combustion controlling equipment. The pulse-combustion furnace pressure controlling device is used for controlling the furnace pressure of an industrial furnace using pulse-combustion technique. A burner nozzle controller is installed beside a burner nozzle, a temperature controlling thermocouple is installed on a furnace body, a furnace chamber pressure measuring device is installed on the furnace body, an input end of a micro differential pressure transmitter is connected with the furnace chamber pressure measuring device, and a flue gas thermocouple is arranged in a flue. The output ends of the burner nozzle controller, the temperature controlling thermocouple and the flue gas thermocouple are connected with a programmable controller, an output end of the programmable controller is connected with a flue gas valve controller, and the flue gas valve controller is connected with a flue gas valve. The flue aperture can be calculated according to a parameter output by a combustion controlling system in real time, the motion of the flue gas valve is controlled fast, and the fluctuation of the furnace pressure is controlled in time. The stability of the furnace pressure of a pulse-combustion period furnace is greatly improved, the furnace pressure in a whole heating or heat treatment period is basically stabilized between 0-20 Pa with small fluctuation, so the whole processing property and the uniformity of the furnace temperature are improved, the energy consumption is reduced, and the service life of a furnace lining is prolonged.
Description
Technical field
The utility model relates to a kind of control device that adopts the industrial furnace pressure self of pulse-combustion technology, belongs to pulse-combustion control appliance technical field.
Background technology
The combustion technology of the heating load that the pulse-combustion technology is a kind of control mode by intermittent burning in the stove.Specifically, it uses pulse modulation technology, and by regulating the dutycycle of burning time, to play the effect of regulating and controlling furnace temperature, now commonly used have several forms such as pulse, dipulse.Along with the continuous progress of burner technology and control technology, the pulse-combustion technology is generally adopted at the cycle industrial furnace.The advantage of pulse-combustion technology is that pipeline is simple, temperature uniformity good, can enhances productivity.The shortcoming of pulse-combustion technology is the impact that furnace pressure is subjected to pulse-combustion, and fluctuation is large, and wayward, generally fluctuates between-50-50Pa.
Pulse-combustion is used widely because of its outstanding advantage, but the furnace pressure fluctuation problem exists always, main cause is that (1) burner is when moving under the pulse-combustion mode, air, gaseous-pressure are in the preset value scope before the mouth, burner is work in a single day, just can be operated under the fully loaded optimal combustion state.But burner is in logical and disconnected two kinds of alternate run states always, and exhaust gas volumn is very large when burning at full capacity, and furnace pressure is high; Smokeless during disconnection, furnace pressure is low.Therefore furnace pressure is along with the break-make fluctuation of burner combustion is very large, and traditional PID regulates the mode of control furnace pressure continuously, and system responses is too slow, and the furnace pressure fluctuation of control is larger.(2) furnace pressure adopts pressure in the burner hearth, becomes the 4-20ma signal by differential pressure transmitter, reaches regulation meter or PLC and automatically controls the flue butterfly valve opening through the PID computing, to regulate furnace pressure; The variation of the relative furnace pressure of adjusting of flue shutter has hysteresis quality, so furnace pressure fluctuating always, can't realize plateau, affects the integrated artistic performance of stove.
In addition, the furnace pressure fluctuation also can cause energy loss.When furnace pressure was negative value, the imprecision place sucked a large amount of cold airs behind fire door, furnace side, the stove etc., caused heat loss to increase and the oxidization burning loss increase; When the furnace pressure position on the occasion of the time, high-temperature flue gas also causes the increase of heat loss with outside the effusion stove.
The utility model content
Technical problem to be solved in the utility model provides a kind ofly can eliminate the hysteresis quality of flue shutter or electric butterfly valve, in time control the pulse-combustion furnace pressure control device of furnace pressure fluctuation.
The technical scheme that solves the problems of the technologies described above is:
A kind of pulse-combustion furnace pressure control device, it comprises burner controller, temperature-control heat couple, the burner hearth pressure obtaning device, differential pressure transmitter, programmable controller, the flue gas thermocouple, the cigarette valve control, burner controller is installed on the burner next door, burner controller is connected with programmable controller, temperature-control heat couple is installed on the body of heater, the output of temperature-control heat couple is connected with programmable controller, the burner hearth pressure obtaning device is installed on the body of heater, the input of differential pressure transmitter is connected with the burner hearth pressure obtaning device, output is connected with programmable controller, the flue gas the installation of TC is in flue, the output of flue gas thermocouple is connected with programmable controller, the output of programmable controller is connected with the cigarette valve control, and the cigarette valve control is connected with the cigarette valve.
Above-mentioned pulse-combustion furnace pressure control device, the quantity of described burner controller is corresponding with burner quantity, burner controller of the other installation of each burner.
Above-mentioned pulse-combustion furnace pressure control device, described temperature-control heat couple are a plurality of, are distributed on the burner hearth both sides along burner hearth length direction symmetry, and the distance between the temperature-control heat couple equates.
Usefulness of the present utility model is:
The utility model is regulated burning quantity and the synchronous PID of flue shutter that simple PID control and regulation flue shutter changes burner into, eliminated the hysteresis quality of flue shutter, consider that simultaneously flue-gas temperature is on the impact of furnace pressure, according to the large and small fire quantity of in real time output of combustion control system and the control parameter of dividing temperature section to arrange, calculate the flue aperture, control rapidly the cigarette valve events, thereby in time controlled the fluctuation of furnace pressure, guaranteed the stability of furnace pressure.After the improvement, the cycle stove furnace pressure stability of pulse-combustion improves greatly, and furnace pressure is basicly stable between 0-20Pa in whole heating or the heat treatment cycle, and it is very little to fluctuate, improve integrated artistic performance and temperature uniformity, reduced energy consumption, prolonged the service life of furnace lining.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Mark is as follows among the figure: body of heater 1, burner 2, burner controller 3, temperature-control heat couple 4, burner hearth pressure obtaning device 5, differential pressure transmitter 6, programmable controller 7, flue gas thermocouple 8, cigarette valve control 9, cigarette valve 10.
The specific embodiment
The utility model comprises burner controller 3, temperature-control heat couple 4, burner hearth pressure obtaning device 5, differential pressure transmitter 6, programmable controller 7, flue gas thermocouple 8, cigarette valve control 9, cigarette valve 10.
Show among the figure, burner 2 is installed on the body of heater 1, and burner controller 3 is installed on the burner next door, and the quantity of burner controller 3 is corresponding with burner 2 quantity, burner controller 3 of each burner 2 other installation.Burner controller 3 is connected with programmable controller 7, sends the large and small fire of burner 2 burning quantity to programmable controller 7.
Show among the figure, temperature-control heat couple 4 is installed on the body of heater 1, and temperature-control heat couple 4 is a plurality of, is distributed on the burner hearth both sides along burner hearth length direction symmetry, and the distance between the temperature-control heat couple 4 equates.The output of temperature-control heat couple 4 is connected with programmable controller 7, sends the segmentation temperature information in the burner hearth to programmable controller 7.
Show among the figure, burner hearth pressure obtaning device 5 is installed on the body of heater, and the input of differential pressure transmitter 6 is connected with burner hearth pressure obtaning device 5, and output is connected with programmable controller 7.Pressure in the burner hearth is transformed into the 4-20ma signal of telecommunication to pressure signal by burner hearth pressure obtaning device 5, differential pressure transmitter 6 and is sent to programmable controller 7.
Show among the figure, flue gas thermocouple 8 is installed in the flue, and the output of flue gas thermocouple 8 is connected with programmable controller 7, and the output of programmable controller 7 is connected with cigarette valve control 9, and cigarette valve control 9 is connected with cigarette valve 10.
Programmable controller 7 is according to the large and small fire quantity of in real time output of combustion control system and the control parameter of minute temperature section setting, calculate the flue aperture, control rapidly 9 actions of cigarette valve control, drive 10 actions of cigarette valve, thereby in time controlled the fluctuation of furnace pressure, guaranteed the stability of furnace pressure.
Claims (3)
1. pulse-combustion furnace pressure control device, it is characterized in that: it comprises burner controller (3), temperature-control heat couple (4), burner hearth pressure obtaning device (5), differential pressure transmitter (6), programmable controller (7), flue gas thermocouple (8), cigarette valve control (9), burner controller (3) is installed on burner (2) next door, burner controller (3) is connected with programmable controller (7), temperature-control heat couple (4) is installed on the body of heater (1), the output of temperature-control heat couple (4) is connected with programmable controller (7), burner hearth pressure obtaning device (5) is installed on the body of heater (1), the input of differential pressure transmitter (6) is connected with burner hearth pressure obtaning device (5), output is connected with programmable controller (7), flue gas thermocouple (8) is installed in the flue, the output of flue gas thermocouple (8) is connected with programmable controller (7), the output of programmable controller (7) is connected with cigarette valve control (9), and cigarette valve control (9) is connected with cigarette valve (10).
2. pulse-combustion furnace pressure control device according to claim 1, it is characterized in that: the quantity of described burner controller (3) is corresponding with burner (2) quantity, the other burner controller (3) of installing of each burner (2).
3. pulse-combustion furnace pressure control device according to claim 2 is characterized in that: described temperature-control heat couple (4) is distributed on the burner hearth both sides for a plurality of along burner hearth length direction symmetry, and the distance between the temperature-control heat couple (4) equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220259322 CN202734585U (en) | 2012-06-04 | 2012-06-04 | Pulse-combustion furnace pressure controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220259322 CN202734585U (en) | 2012-06-04 | 2012-06-04 | Pulse-combustion furnace pressure controlling device |
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| Publication Number | Publication Date |
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| CN202734585U true CN202734585U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220259322 Expired - Lifetime CN202734585U (en) | 2012-06-04 | 2012-06-04 | Pulse-combustion furnace pressure controlling device |
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| CN (1) | CN202734585U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697716A (en) * | 2013-12-30 | 2014-04-02 | 南通市亿控自动化***有限公司 | System for automatically controlling and storing pressure of smelting furnace in real time |
| CN107797512A (en) * | 2016-08-31 | 2018-03-13 | 鞍钢股份有限公司 | A kind of the controling of the pressure of the oven system and control method of the production of naked light formula annealing furnace automobile steel |
| CN109141051A (en) * | 2018-10-12 | 2019-01-04 | 厦门大学嘉庚学院 | A kind of optimum design method of heat accumulating type industrial heating furnace controling of the pressure of the oven |
| CN109655100A (en) * | 2017-10-10 | 2019-04-19 | 沈阳铝镁设计研究院有限公司 | Pot type burner furnace temperature furnace pressure monitoring system and method based on fieldbus mode |
| CN114085988A (en) * | 2021-10-09 | 2022-02-25 | 辽宁忠旺机械设备制造有限公司 | Novel furnace pressure control method |
| CN115355522A (en) * | 2022-08-03 | 2022-11-18 | 东北大学 | Combustion system temperature control method combining continuous proportion regulation and small fire pulse |
| CN115355522B (en) * | 2022-08-03 | 2024-05-31 | 东北大学 | Combustion system temperature control method combining continuous proportion adjustment and small fire pulse |
-
2012
- 2012-06-04 CN CN 201220259322 patent/CN202734585U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697716A (en) * | 2013-12-30 | 2014-04-02 | 南通市亿控自动化***有限公司 | System for automatically controlling and storing pressure of smelting furnace in real time |
| CN107797512A (en) * | 2016-08-31 | 2018-03-13 | 鞍钢股份有限公司 | A kind of the controling of the pressure of the oven system and control method of the production of naked light formula annealing furnace automobile steel |
| CN109655100A (en) * | 2017-10-10 | 2019-04-19 | 沈阳铝镁设计研究院有限公司 | Pot type burner furnace temperature furnace pressure monitoring system and method based on fieldbus mode |
| CN109141051A (en) * | 2018-10-12 | 2019-01-04 | 厦门大学嘉庚学院 | A kind of optimum design method of heat accumulating type industrial heating furnace controling of the pressure of the oven |
| CN109141051B (en) * | 2018-10-12 | 2020-03-17 | 厦门大学嘉庚学院 | Optimal design method for furnace pressure control of heat accumulating type industrial heating furnace |
| CN114085988A (en) * | 2021-10-09 | 2022-02-25 | 辽宁忠旺机械设备制造有限公司 | Novel furnace pressure control method |
| CN115355522A (en) * | 2022-08-03 | 2022-11-18 | 东北大学 | Combustion system temperature control method combining continuous proportion regulation and small fire pulse |
| CN115355522B (en) * | 2022-08-03 | 2024-05-31 | 东北大学 | Combustion system temperature control method combining continuous proportion adjustment and small fire pulse |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |