CN210065686U - System for controlling thickness of ash layer of intermittent gas making furnace - Google Patents
System for controlling thickness of ash layer of intermittent gas making furnace Download PDFInfo
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- CN210065686U CN210065686U CN201920470757.5U CN201920470757U CN210065686U CN 210065686 U CN210065686 U CN 210065686U CN 201920470757 U CN201920470757 U CN 201920470757U CN 210065686 U CN210065686 U CN 210065686U
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- thermocouple
- temperature
- making furnace
- ash
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Abstract
The utility model discloses an ash layer thickness control system of an intermittent gas making furnace, which comprises an upper thermocouple arranged at the upper part of a gasification layer of the gas making furnace, a middle thermocouple arranged at the middle part of the gasification layer of the gas making furnace, a lower thermocouple arranged at the lower part of the gasification layer of the gas making furnace and an ash bin thermocouple arranged in an ash bin of the gas making furnace; the temperature control device is characterized by further comprising a temperature controller, a transmitter and a frequency converter, wherein the input end of the temperature controller is respectively connected with the upper thermocouple, the middle thermocouple, the lower thermocouple and the ash bin thermocouple through the transmitter, the output end of the temperature controller is connected with the input end of the frequency converter, and the output end of the frequency converter is connected with a motor of the grate machine. The utility model discloses can respond rapidly and in time control, effectively maintain ash bed thickness, prevent to bring out the thing too much, avoid the damage to the grate.
Description
Technical Field
The utility model belongs to the technical field of the gas making stove, concretely relates to intermittent type formula gas making stove ash bed thickness control system.
Background
The materials in the batch type fixed bed gas making furnace are generally divided into an ash layer, a gasification layer, a dry distillation layer, a drying layer and other areas from the bottom to the top, and the thickness of the ash layer is very important for the stability of the gasification layer and the reaction thereof. If the thickness of the ash layer is too large, the gasification layer moves upwards, the entrainment is too much, and the outlet temperature is high; if the thickness of the ash layer is too small, the gasification layer will move downwards, causing great damage to the grate. The control to ash bed thickness among the prior art is exactly control ash tray speed, and the stability of gas making stove operation directly receives the influence of grate machine speed, and in traditional production, relies on down temperature and personal experience to judge the grate machine rotational speed usually, if meet special circumstances such as blow steam flow fluctuation from top to bottom or coal type change, probably lead to operative employee to judge the error, can not in time adjust the grate machine speed, influences the stability of gas furnace.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model provides a can respond rapidly and in time control, effectively maintain the intermittent type formula gas making furnace ash bed thickness control system of ash bed thickness.
The thickness control system of the ash layer of the intermittent gas making furnace comprises an upper thermocouple arranged at the upper part of the gasification layer of the gas making furnace, a middle thermocouple arranged at the middle part of the gasification layer of the gas making furnace, a lower thermocouple arranged at the lower part of the gasification layer of the gas making furnace and an ash bin thermocouple arranged in an ash bin of the gas making furnace; the input end of the temperature controller is respectively connected with the upper thermocouple, the middle thermocouple, the lower thermocouple and the ash bin thermocouple through the transmitter, the output end of the temperature controller is connected with the input end of the frequency converter, and the output end of the frequency converter is connected with the motor of the grate machine;
the upper part, the middle part, the lower part and the ash bin thermocouple are respectively used for detecting the temperature of the position in real time and sending the temperature to the temperature controller through the transmitter;
the temperature controller is used for comparing the detected temperature with the corresponding last detected value and sending a deceleration adjusting signal to the frequency converter when the temperature of the ash bin and the lower temperature rise and the upper temperature falls or sending an acceleration adjusting signal to the frequency converter when the temperature of the ash bin and the lower temperature fall and the upper temperature rises; the frequency converter is also used for sending a stopping adjusting signal to the frequency converter when the judging condition is not satisfied and the temperature of the middle part is higher than the temperature of the upper part and the temperature of the lower part;
the frequency converter is used for controlling the motor of the grate bar machine to adjust the rotating speed of the grate bar machine when receiving a deceleration adjusting signal or an acceleration adjusting signal; and the control device is also used for controlling the grate machine to recover the initial rotating speed when receiving the stopping adjusting signal.
Furthermore, the upper thermocouple, the middle thermocouple and the lower thermocouple are all a plurality of thermocouples and are uniformly distributed along the circumferential direction of the gas making furnace.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model adopts the temperature controller and the frequency converter to control and adjust the rotating speed of the grate machine according to the temperature of the ash bin and the upper, middle and lower parts, can respond and control at the first time when the gasification layer moves up and down, and can stabilize the position of the gasification layer in time, finally the ash layer can keep a proper thickness, thereby avoiding excessive carry-over and damage to the grate;
2. the average temperature of the corresponding position is collected by uniformly arranging a plurality of thermocouples on the upper part, the middle part and the lower part of the gasification layer, so that the stability of the system for controlling the thickness of the ash layer can be improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 upper portion thermocouple, 2 middle part thermocouples, 3 lower part thermocouples, 4 ash storehouse thermocouples, 5 temperature control appearance, 6 transmitters, 7 converters, 8 stove rod machine motors.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the utility model easy to understand and understand, the utility model is further explained by combining with the specific figures.
The thickness control system of the ash layer of the intermittent gas making furnace comprises an upper thermocouple 1 arranged at the upper part of the gasification layer of the gas making furnace, a middle thermocouple 2 arranged at the middle part of the gasification layer of the gas making furnace, a lower thermocouple 3 arranged at the lower part of the gasification layer of the gas making furnace and an ash bin thermocouple 4 arranged in an ash bin of the gas making furnace; still include temperature controller 5, changer 6 and converter 7, the input of temperature controller 5 pass through changer 6 respectively with upper portion thermocouple 1, middle part thermocouple 2, lower part thermocouple 3 and ash bin thermocouple 4 are connected, the output and the 7 input of converter of temperature controller 5 are connected, 7 output of converter are connected with stokehold machine motor 8.
The upper part, the middle part, the lower part and the ash bin thermocouples respectively detect the temperature of the positions (namely the upper part, the middle part, the lower part and the ash bin) in real time and send the temperature to the temperature controller through the transmitter, the temperature controller compares the detected upper part, the middle part, the lower part and the ash bin temperature with the corresponding last detected value, and when the temperature of the ash bin and the lower part rise and the temperature of the upper part drops, the frequency converter reduces the rotating speed of the grate machine according to the difference value of the two detections (so as to slow down the deslagging speed and thicken an ash layer); when the temperature of the ash bin and the lower temperature decrease and the upper temperature increases, the rotating speed of the grate machine is increased (so as to increase the deslagging speed and thin the ash layer) through the frequency converter according to the difference of the two detections. Since the rotation speed of the grate machine is adjusted according to the specification of the gas making furnace, for a temperature controller and a frequency converter, specific parameter setting is carried out according to the actual condition of the gas making furnace, which belongs to the conventional technical means and is not detailed here. The upper part, the middle part and the lower part of the gasification layer where the thermocouple is located refer to the position where the thermocouple is located in a preset stable state, and the middle thermocouple corresponds to the middle part of the gasification layer with the highest temperature in a preset state; since there is no distinct boundary between the layers, the upper and lower portions may be positioned as the case may be, for example, the upper thermocouple may be positioned at or near the retort layer. Because the real-time detection of the temperature controller has a detection interval time, the last detection value refers to the corresponding temperature detected by the temperature controller before the detection interval time, and the detection interval time of the temperature controller can be flexibly set according to needs, such as 500 ms. Such temperature controllers are commercially available.
Normally, the middle section temperature is higher than the upper and lower sections. Specifically, when the temperature of the ash bin and the temperature of the lower part are detected to rise and the temperature of the upper part is detected to fall, the gasified layer is judged to move downwards, the thickness of the ash layer is shown to be thin, at the moment, the temperature controller is matched with the frequency converter according to the deviation compared with the temperature detected last time to set the rotation speed of the grate bar machine to be reduced, the control is stopped until the judgment condition is not satisfied and the middle temperature is higher than the temperature of the upper part and the temperature of the lower part, and the rotation speed of the grate bar machine; when the temperature of the ash bin and the temperature of the lower part are detected to be reduced, and the temperature of the upper part is increased, the gasified layer is judged to move upwards, the thickness of the ash layer is thickened, at the moment, the rotation speed of the fire bar machine to be accelerated is set by the temperature controller according to the deviation compared with the temperature detected last time and the frequency converter, the control is stopped until the judgment condition is no longer satisfied, and the rotation speed of the fire bar machine is recovered when the temperature of the middle part is higher than the temperature of the upper part and the temperature of the. The judgment condition is that the temperature of the ash bin and the temperature of the lower part are increased, and the temperature of the upper part is decreased, or the temperature of the ash bin and the temperature of the lower part are decreased, and the temperature of the upper part is increased; the requirement that the middle temperature is higher than the upper temperature and the lower temperature is also met so as to stabilize the gasification layer within a preset position range through controlling the thickness of the ash layer. Because other reasons can cause the temperature of the upper part and the lower part to change in a rising and falling way, the gasification layer can be more accurately judged to move by matching with the temperature of the ash bin. This scheme is through according to ash bin and last well lower part temperature and adopt temperature controller and converter cooperation to control the rotational speed of adjusting the grate bar machine, can take place the very first time of moving from top to bottom at the gasification layer and just make a response and control, in time stabilize the position on gasification layer, finally make the ash blanket can keep a suitable thickness, avoid too much carry over thing and the damage to the grate.
As a further optimized scheme, the number of the upper thermocouples 1, the number of the middle thermocouples 2 and the number of the lower thermocouples 3 are multiple, and the upper thermocouples 1, the middle thermocouples 2 and the lower thermocouples 3 are respectively and uniformly distributed along the circumferential direction of the gas making furnace.
Therefore, the average temperature of the corresponding position is collected by uniformly arranging a plurality of thermocouples on the upper part, the middle part and the lower part of the gasification layer, and the stability of the system for controlling the thickness of the ash layer can be improved.
Above only do the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above embodiment, all belong to the technical scheme of the present invention all belong to the protection scope of the present invention. For those skilled in the art, several modifications can be made without departing from the principle of the present invention, and such modifications should also be considered as the protection scope of the present invention.
Claims (2)
1. Intermittent type formula gas making furnace ash layer thickness control system, its characterized in that: the device comprises an upper thermocouple arranged on the upper part of a gasification layer of the gas making furnace, a middle thermocouple arranged in the middle of the gasification layer of the gas making furnace, a lower thermocouple arranged on the lower part of the gasification layer of the gas making furnace, and an ash bin thermocouple arranged in an ash bin of the gas making furnace; the input end of the temperature controller is respectively connected with the upper thermocouple, the middle thermocouple, the lower thermocouple and the ash bin thermocouple through the transmitter, the output end of the temperature controller is connected with the input end of the frequency converter, and the output end of the frequency converter is connected with the motor of the grate machine;
the upper part, the middle part, the lower part and the ash bin thermocouple are respectively used for detecting the temperature of the position in real time and sending the temperature to the temperature controller through the transmitter;
the temperature controller is used for comparing the detected temperature with the corresponding last detected value and sending a deceleration adjusting signal to the frequency converter when the temperature of the ash bin and the lower temperature rise and the upper temperature falls or sending an acceleration adjusting signal to the frequency converter when the temperature of the ash bin and the lower temperature fall and the upper temperature rises; the frequency converter is also used for sending a stopping adjusting signal to the frequency converter when the judging condition is not satisfied and the temperature of the middle part is higher than the temperature of the upper part and the temperature of the lower part;
the frequency converter is used for controlling the motor of the grate bar machine to adjust the rotating speed of the grate bar machine when receiving a deceleration adjusting signal or an acceleration adjusting signal; and the control device is also used for controlling the grate machine to recover the initial rotating speed when receiving the stopping adjusting signal.
2. The system for controlling the thickness of an ash layer of a batch gas-making furnace according to claim 1, wherein:
the gas producer comprises a gas producer, an upper thermocouple, a middle thermocouple, a lower thermocouple, a gas generator and a gas generator, wherein the gas producer comprises a gas generator, the gas generator is arranged in the gas generator, the upper thermocouple, the middle thermocouple and the lower thermocouple are all multiple, and the upper thermocouple, the.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920470757.5U CN210065686U (en) | 2019-04-09 | 2019-04-09 | System for controlling thickness of ash layer of intermittent gas making furnace |
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| CN201920470757.5U CN210065686U (en) | 2019-04-09 | 2019-04-09 | System for controlling thickness of ash layer of intermittent gas making furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970939A (en) * | 2020-07-24 | 2022-01-25 | 宝山钢铁股份有限公司 | System and method for preventing and controlling ash bin temperature in sintering process |
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2019
- 2019-04-09 CN CN201920470757.5U patent/CN210065686U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970939A (en) * | 2020-07-24 | 2022-01-25 | 宝山钢铁股份有限公司 | System and method for preventing and controlling ash bin temperature in sintering process |
| CN113970939B (en) * | 2020-07-24 | 2022-07-19 | 宝山钢铁股份有限公司 | System and method for preventing and controlling ash bin temperature in sintering process |
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