阅读说明：本技术 一种石油焦煅烧炉智能调温方法 (Intelligent temperature adjusting method for petroleum coke calcining furnace ) 是由 马汝杰 张永利 史涛 于 2020-06-18 设计创作，主要内容包括：一种石油焦煅烧炉智能调温方法,将石油焦煅烧炉的闸板开合度与石油焦煅烧炉的测温装置的测温结果相关联,在石油焦煅烧炉的控制系统中设定炉温与闸板开合度的曲线关系,所述控制系统获取石油焦煅烧炉的测温装置反馈的炉温后,以设定的对应闸板开合度控制闸板调节杆推拉闸板以调整炉内火焰,随着炉温的变化智能调整所述闸板开合度。石油焦煅烧炉智能调温方法,能根据实时炉内温度只能调整挥发份闸板或空气闸板的大小。(An intelligent temperature regulation method for a petroleum coke calciner is characterized in that the opening degree of a gate plate of the petroleum coke calciner is related to the temperature measurement result of a temperature measurement device of the petroleum coke calciner, the curve relation between the furnace temperature and the opening degree of the gate plate is set in a control system of the petroleum coke calciner, after the control system obtains the furnace temperature fed back by the temperature measurement device of the petroleum coke calciner, a gate plate adjusting rod is controlled to push and pull the gate plate according to the set corresponding opening degree of the gate plate to adjust the flame in the calciner, and the opening degree of the gate plate is intelligently adjusted along with the change. The intelligent temperature regulating method for petroleum coke calcining furnace can regulate the size of volatile matter gate plate or air gate plate according to the real-time furnace temperature.)

1. The intelligent temperature regulating method for the petroleum coke calcining furnace is characterized in that the opening degree of a gate plate of the petroleum coke calcining furnace is related to a temperature measuring result of a temperature measuring device of the petroleum coke calcining furnace, a curve relation between the furnace temperature and the opening degree of the gate plate is set in a control system of the petroleum coke calcining furnace, after the control system obtains the furnace temperature fed back by the temperature measuring device of the petroleum coke calcining furnace, a gate plate adjusting rod is controlled to push and pull the gate plate according to the set corresponding opening degree of the gate plate so as to adjust the flame in the furnace, and the opening degree of the gate plate is intelligently adjusted along with.

2. The intelligent temperature regulating method for the petroleum coke calcining furnace as claimed in claim 1, wherein the opening degree of the gate plate is ZK%, the ZK is the ratio of the opening distance of the gate plate to the full stroke of the gate plate, the temperature measuring result of the temperature measuring device is W ℃, the target temperature of the petroleum coke calcining furnace is S ℃, and the opening degree of the gate plate and the temperature measuring result of the temperature measuring device should satisfy the following relationship:

ZK＝1-W/S。

3. the intelligent temperature regulating method for the petroleum coke calcining furnace as claimed in claim 1, wherein the opening degree of the gate plate is ZK%, ZK is the ratio of the opening distance of the gate plate to the full stroke of the gate plate, the temperature measuring result of the temperature measuring device is W ℃, the target temperature of the petroleum coke calcining furnace is S ℃, the target temperature is set to be a plurality of stage target values S1, S2 and S3 … … Sn, the stage target values correspond to a plurality of stage engagement degrees ZK1, ZK2 and ZK3 … … ZKn, the real-time value of the opening degree of the gate plate is ZK, and the real-time value of the furnace temperature is S, so that the opening degree of the gate plate and the temperature measuring result of the temperature measuring device should satisfy the following relations:

when S is less than or equal to S1, ZK is ZK 1;

when S is less than or equal to S2, ZK is ZK 2;

when S is less than or equal to S3, ZK is ZK 3;

……

when s is less than or equal to Sn, zk is ZKn;

when s > Sn, zk is 0.

4. An intelligent temperature regulating system of a petroleum coke calcining furnace is characterized by comprising:

a control system (1);

temperature measuring device (2): the device is used for measuring the temperature of a flame path in the furnace and transmitting the measurement result to the control system (1);

a flashboard adjusting rod (3); the intelligent control system is used for intelligently adjusting the opening degree of the flashboard according to the instruction of the control system (1).

5. The intelligent temperature regulating system for the petroleum coke calcining furnace is characterized in that the control system is a petroleum coke calcining furnace PLC (1 a).

6. The intelligent temperature regulating system for the petroleum coke calcining furnace is characterized by further comprising a control terminal (4), wherein the petroleum coke calcining furnace PLC (1a) is connected with the control terminal (4).

7. The intelligent temperature regulating system of the petroleum coke calcining furnace as claimed in claim 4, characterized in that the temperature measuring device (2) comprises a photoelectric temperature measuring sensor (2a), the photoelectric temperature measuring sensor (2a) is used for measuring the temperature of the flame path in the furnace, and the temperature measuring device (2) is connected with the control system (1).

8. The intelligent temperature regulating system of the petroleum coke calcining furnace is characterized in that the gate plate adjusting rod (3) comprises a connecting rod for connecting a gate plate in the furnace and a driving device for driving the connecting rod; one end of the connecting rod is connected with the flashboard, the other end of the connecting rod is connected with the driving device, and the connecting rod linearly pushes and pulls the flashboard to act under the action of the driving device;

the flashboard adjusting rod (3) further comprises a position detection device for detecting the real-time position of the flashboard;

the driving device and the position detection device are connected with the control system (1).

9. The intelligent temperature regulating system for the petroleum coke calcining furnace as claimed in claim 8, wherein the driving device is a motor driving gear and rack structure, a rack is arranged on the connecting rod, a gear matched with the rack is connected to a motor output shaft fixed outside the petroleum coke calcining furnace, the rotary motion of the motor output shaft is converted into the linear motion of the connecting rod through the matching of the gear and the rack, and the gate plate connected with the connecting rod follows the connecting rod to make the linear motion.

10. The intelligent temperature regulating system of the petroleum coke calcining furnace as claimed in claim 9, wherein the position detecting device is interlocked with the driving device, an encoder is further connected to an output shaft of the motor, and the encoder is connected with the control system (1).

Technical Field

The invention relates to the technical field of petroleum coke calciners, in particular to an intelligent temperature regulating method for a petroleum coke calciner.

Background

Petroleum coke is a black or dark gray hard solid petroleum product with metallic luster and porosity, and is a carbon substance formed by granular, columnar or needle-shaped crystals of tiny graphite. The petroleum coke component is hydrocarbon containing carbon 90-97 wt% and hydrogen 1.5-8 wt%, and also contains nitrogen, chlorine, sulfur and heavy metal compounds. Petroleum coke is a byproduct produced when raw oil of a delayed coking device is cracked at high temperature to produce light oil. The petroleum coke yield is about 25-30% of the raw oil. Its low-level heat productivity is about 1.5-2 times of coal, ash content is not greater than 0.5%, volatile component is about 11%, and its quality is close to that of anthracite. In the case of a graphite electrode for steel making or an anode paste (melting electrode) for aluminum or magnesium making, green coke must be calcined to meet the requirements for petroleum coke (green coke). The calcining temperature is generally about 1300 ℃, so that petroleum coke volatile components are removed as much as possible. Therefore, the hydrogen content of petroleum coke remanufacturing products can be reduced, the graphitization degree of the petroleum coke is improved, the high-temperature strength and the heat resistance of the graphite electrode are improved, and the conductivity of the graphite electrode is improved. The calcined coke is mainly used for producing graphite electrodes, carbon paste products, diamond dust, food-grade phosphorus industry, metallurgical industry, calcium carbide and the like, wherein the graphite electrodes are most widely applied.

The calcining of petroleum coke by a pot calciner is a processing technology which is commonly used at home and abroad. The indirect heating of the carbon material is realized in a fixed charging bucket, so that the carbon material is heated to complete the calcination process. The pot calciner is one of the furnace types widely used in the carbon industry. During calcination, the raw materials are added into the tank through the top feeding device, and are gradually heated by flame paths positioned at two sides of the charging tank in the process of moving from top to bottom. The heat generated by the combustion of the fuel in the flue is indirectly transferred to the feedstock through the walls of the flue. When the temperature of the raw materials reaches 350-600 ℃, a large amount of volatile components in the raw materials are released. The volatile components are collected through the volatile component channel and sent into a flame path for combustion. The combustion of volatiles is yet another source of heat for the can calciner. After a series of physicochemical changes of the raw materials are finished at a high temperature of more than 1200-1300 ℃, the raw materials enter a water jacket from the bottom of a charging bucket for cooling, and are finally discharged out of the furnace by a discharging device. The waste flue gas after heat exchange is sent to a waste heat boiler, and the waste heat is used for producing steam, or the waste flue gas is sent to a heat exchange chamber for preheating air for fuel supply and volatile matter combustion.

The existing pot-type calcining furnace is provided with a plurality of volatile matters and hot air adjusting operation holes at the position of the front and rear operation surfaces of the furnace corresponding to a specific flame path layer. When volatile matter and hot air are regulated, an operator needs to open the operation hole cover, stretch the tool hook into the hole, push and pull the volatile matter flashboard or the air flashboard to regulate the size of the through hole on the flashboard brick cup, and thus the purpose of regulating the volatile matter amount or the hot air amount is achieved. The existing shutter adjusting rod in the furnace has a simple structure, generally a structure with a long rod end provided with a right-angle hook, and has the following defects: 1. when the flashboard is pushed and pulled, the open operation hole enables the high temperature in the furnace to directly radiate the face of an operator, which is not beneficial to the labor protection of workers; 2. the opening size of the through hole is completely dependent on experience and feeling, and the randomness is large, so that the adjustment amount of volatile matters or hot air is not accurate, an operator needs to have rich experience to hold the air, and the air conditioner is seriously limited by the experience level of the operator; 3. an operator needs to open a flame path observation window at regular time to observe the temperature in the furnace, and then opens a volatile flashboard or an air flashboard adjusting port to adjust the position of the flashboard through an adjusting rod, so that the efficiency is low.

Disclosure of Invention

In order to solve the existing problems, the invention provides an intelligent temperature regulating method for a petroleum coke calcining furnace, which can only regulate the size of a volatile matter flashboard or an air flashboard according to the real-time temperature in the furnace.

The purpose of the invention is realized by the following technical scheme.

An intelligent temperature regulation method for a petroleum coke calciner is characterized in that the opening degree of a gate plate of the petroleum coke calciner is related to the temperature measurement result of a temperature measurement device of the petroleum coke calciner, the curve relation between the furnace temperature and the opening degree of the gate plate is set in a control system of the petroleum coke calciner, after the control system obtains the furnace temperature fed back by the temperature measurement device of the petroleum coke calciner, a gate plate adjusting rod is controlled to push and pull the gate plate according to the set corresponding opening degree of the gate plate to adjust the flame in the calciner, and the opening degree of the gate plate is intelligently adjusted along with the change.

According to the above intelligent temperature adjusting method for the petroleum coke calcining furnace, the opening degree of the gate plate is set to be ZK%, the ZK is the ratio of the opening distance of the gate plate to the full stroke of the gate plate, the temperature measurement result of the temperature measuring device is set to be W ℃, the target temperature of the petroleum coke calcining furnace is set to be S ℃, and then the opening degree of the gate plate and the temperature measurement result of the temperature measuring device should satisfy the following relation:

ZK＝1-W/S。

the above-mentioned intelligent temperature adjusting method for the petroleum coke calcining furnace is characterized in that the opening degree of the gate plate is ZK%, ZK is the ratio of the opening distance of the gate plate to the full stroke of the gate plate, the temperature measuring result of the temperature measuring device is W ℃, the target temperature of the petroleum coke calcining furnace is S ℃, the target temperature is set to be a plurality of stage target values S1, S2 and S3 … … Sn, the stage target values correspond to a plurality of stage engagement degrees ZK1, ZK2 and ZK3 … … ZKn, the real-time value of the opening degree of the gate plate is ZK, and the real-time value of the furnace temperature is S, so that the opening degree of the gate plate and the temperature measuring result of the temperature measuring device should satisfy the following relations:

when S is less than or equal to S1, ZK is ZK 1;

when S is less than or equal to S2, ZK is ZK 2;

when S is less than or equal to S3, ZK is ZK 3;

……

when s is less than or equal to Sn, zk is ZKn;

when s > Sn, zk is 0.

An intelligent temperature regulating system of a petroleum coke calcining furnace comprises:

a control system;

temperature measuring device: the device is used for measuring the temperature of a flame path in the furnace and transmitting the measurement result to the control system;

a flashboard adjusting rod; and the intelligent adjustment device is used for intelligently adjusting the opening degree of the flashboard according to the instruction of the control system.

According to the intelligent temperature regulating system for the petroleum coke calcining furnace, the control system is a petroleum coke calcining furnace PLC.

The intelligent temperature regulating system for the petroleum coke calciner further comprises a control terminal, and the petroleum coke calciner PLC is connected with the control terminal.

According to the intelligent temperature regulating system for the petroleum coke calcining furnace, the temperature measuring device comprises a photoelectric temperature measuring sensor, the photoelectric temperature measuring sensor is used for measuring the temperature of a flame path in the furnace, and the temperature measuring device is connected with the control system.

The intelligent temperature regulating system for the petroleum coke calcining furnace comprises a gate plate adjusting rod, a temperature regulating valve and a temperature regulating valve, wherein the gate plate adjusting rod comprises a connecting rod for connecting a gate plate in the furnace and a driving device for driving the connecting rod; one end of the connecting rod is connected with the flashboard, the other end of the connecting rod is connected with the driving device, and the connecting rod linearly pushes and pulls the flashboard to act under the action of the driving device;

the flashboard adjusting rod further comprises a position detection device for detecting the real-time position of the flashboard;

the driving device and the position detection device are connected with the control system.

According to the intelligent temperature regulating system for the petroleum coke calcining furnace, the driving device is of a motor driving gear and rack structure, the rack is arranged on the connecting rod, the motor output shaft fixed outside the petroleum coke calcining furnace is connected with the gear matched with the rack, the rotary motion of the motor output shaft is converted into the linear motion of the connecting rod through the matching of the gear and the rack, and the flashboard connected with the connecting rod and the connecting rod move linearly together.

According to the intelligent temperature regulating system for the petroleum coke calcining furnace, the position detection device is linked with the driving device, the output shaft of the motor is further connected with the encoder, and the encoder is connected with the control system.

The invention has the beneficial effects that:

1. the intelligent temperature regulating method for the petroleum coke calcining furnace can only regulate the size of the volatile matter flashboard or the air flashboard according to the real-time temperature in the furnace;

2. the intelligent temperature regulating method for the petroleum coke calcining furnace realizes the optimization of the petroleum coke calcining process by presetting the curve relation between the furnace temperature and the opening degree of the flashboard and intelligently regulating the opening degree of the flashboard according to the furnace temperature;

3. the intelligent temperature regulating method for the petroleum coke calcining furnace disclosed by the invention has the advantages that the whole process is accurately controlled, the manual operation is not required, the working efficiency is greatly improved, and the labor intensity is reduced.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:

fig. 1 is a graph of furnace temperature and opening degree of a shutter of a first embodiment of an intelligent temperature adjusting method for a petroleum coke calciner.

Fig. 2 is a graph of furnace temperature and opening degree of a shutter of the second embodiment of the intelligent temperature adjusting method for the petroleum coke calcining furnace.

FIG. 3 is a structural block diagram of an intelligent temperature regulating system of a petroleum coke calcining furnace.

The components represented by the reference numerals in the figures are:

the device comprises a control system 1, a petroleum coke calcining furnace PLC1a, a temperature measuring device 2, a photoelectric temperature measuring sensor 2a, a gate plate adjusting rod 3, a control terminal 4, a PC4a, handheld equipment 4b and a touch screen 4 c.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

An intelligent temperature regulating method for a petroleum coke calciner is characterized in that the opening degree of a flashboard of the petroleum coke calciner is related to a temperature measuring result of a temperature measuring device of the petroleum coke calciner, a curve relation between furnace temperature and the opening degree of the flashboard is set in a control system of the petroleum coke calciner, after the control system obtains the furnace temperature fed back by the temperature measuring device of the petroleum coke calciner, a flashboard adjusting rod is controlled to push and pull the flashboard according to the set corresponding opening degree of the flashboard to adjust flame in the furnace, and the opening degree of the flashboard is intelligently adjusted along with the change of the furnace temperature; the curve relationship of the furnace temperature and the shutter opening degree is exemplified in the first embodiment and the second embodiment described below.

First embodiment

Referring to fig. 1, fig. 1 is a graph of furnace temperature and shutter opening degree of a first embodiment of a petroleum coke calciner intelligent temperature regulation method.

Setting the opening degree of the gate plate to be ZK%, setting the ZK to be the ratio of the opening distance of the gate plate to the full stroke of the gate plate, setting the temperature measurement result of the temperature measurement device to be W ℃, and setting the target temperature of the petroleum coke calcining furnace to be S ℃, wherein the opening degree of the gate plate and the temperature measurement result of the temperature measurement device are required to satisfy the following relations:

ZK＝1-W/S。

as can be seen from the figure, the opening degree of the shutter is inversely proportional to the furnace temperature, that is, when the furnace temperature reaches a target temperature (for example, 1300 ℃), the opening degree of the shutter is 0, that is, the opening distance of the shutter is 0, and the shutter blocks the volatile matter or the air channel; when the furnace temperature is 0 ℃, the opening degree of the gate plate is 1, namely the ratio of the opening distance of the gate plate to the full stroke of the gate plate is 1, and the gate plate is completely opened.

Second embodiment

Referring to fig. 2, fig. 2 is a graph of furnace temperature versus shutter opening degree of the second embodiment of the intelligent temperature regulating method for a petroleum coke calciner.

Setting the opening degree of the gate plate to be ZK%, setting the ZK to be the ratio of the opening distance of the gate plate to the full stroke of the gate plate, setting the temperature measurement result of a temperature measurement device to be W ℃, setting the target temperature of the petroleum coke calcining furnace to be S ℃, setting the target temperature to be a plurality of stage target values S1, S2 and S3 … … Sn, setting the stage target values to be a plurality of stage clamping degrees ZK1, ZK2 and ZK3 … … ZKn, setting the real-time value of the opening degree of the gate plate to be ZK, and setting the real-time value of the furnace temperature to be S, wherein the opening degree of the gate plate and the temperature measurement result of the temperature measurement device should satisfy the following relations:

when S is less than or equal to S1, ZK is ZK 1;

when S is less than or equal to S2, ZK is ZK 2;

when S is less than or equal to S3, ZK is ZK 3;

……

when s is less than or equal to Sn, zk is ZKn

When s > Sn, zk is 0.

As can be seen from the figure, the opening degree of the gate is changed in a step mode, and the setting has two advantages: firstly, the opening and closing degree of a gate plate at a stage can be adjusted according to the petroleum coke calcination process; and secondly, the requirements and the use frequency of the driving device of the flashboard adjusting rod are low by adjusting the opening and closing degrees of the flashboard in stages, so that the cost is reduced.

As shown in the figure, the target temperature is set to be 500 ℃, 800 ℃ and 1300 ℃ in a plurality of stages, and when the real-time temperature of the furnace temperature is less than or equal to 500 ℃, the opening and closing degree of the flashboard is 100 percent; when the real-time temperature of the furnace temperature is less than or equal to 800 ℃, the opening degree of the gate plate is 70 percent; when the real-time temperature of the furnace temperature is less than or equal to 1300 ℃, the opening degree of the flashboard is 50 percent; when the furnace temperature is higher than the target temperature (1300 ℃), the opening degree of the shutter is 0.

In actual production, the curve relationship between the furnace temperature and the opening degree of the shutter is influenced by various factors, such as the influence of volatile matters, the influence of air or the influence of production raw materials, and the like, and the influence factors are not independently isolated and can comprehensively influence the production of petroleum coke, so that the curve relationship between the furnace temperature and the opening degree of the shutter can determine an optimal curve in a production statistical record mode, preliminarily determine the curve between the furnace temperature and the opening degree of the shutter, record the quality condition of corresponding petroleum coke, and gradually adjust the curve relationship between the furnace temperature and the opening degree of the shutter according to the quality condition of the product of the petroleum coke until the optimal curve is found.

According to the above intelligent temperature adjustment method for the petroleum coke calciner, an intelligent temperature adjustment system for the petroleum coke calciner is provided, as shown in fig. 3, comprising:

a control system 1;

the temperature measuring device 2: the device is used for measuring the temperature of a flame path in the furnace and transmitting the measurement result to the control system;

a shutter adjusting lever 3; and the intelligent adjustment device is used for intelligently adjusting the opening degree of the flashboard according to the instruction of the control system.

Further, the control system is a petroleum coke calciner PLC1 a; a Programmable Logic Controller (PLC), a digital operation controller with a microprocessor for automatic control, which can load the control instruction into the memory at any time for storage and execution; the programmable controller consists of a CPU, an instruction and data memory, an input/output interface, a power supply, a digital-analog conversion and other functional units; early PLC had only logic control function, so it was named PLC, and later, with the development, these computer modules with simple functions at first had all kinds of functions including logic control, sequential control, analog control, multi-computer communication, etc., and their names were changed to PLC (programmable controller), but because its shorthand PC conflicts with the shorthand PC of personal computer (personal computer), and because of its custom, people often used the name of PLC, and still used the abbreviation of PLC.

The programmable logic controller used in the industry at present is equivalent to or close to a host of a compact computer, and the advantages of the programmable logic controller in the aspects of expansibility and reliability enable the programmable logic controller to be widely applied to various industrial control fields at present; whether in a computer direct control system, a centralized distributed control system DCS or a field bus control system FCS, a great amount of various PLC controllers are always used; many manufacturers of PLC, such as Siemens, Schneider, Mitsubishi, Taida, and the like, almost all manufacturers relating to the field of industrial automation have the PLC products provided.

The intelligent temperature regulating system of the petroleum coke calcining furnace also comprises a control terminal 4, and the petroleum coke calcining furnace PLC1a is connected with the control terminal 4; the control terminal 4 is used for visually operating the control system 1, such as a PC4a, a handheld device 4b, a touch screen 4c and the like, and is connected with the petroleum coke calcining furnace PLC1a through a corresponding communication interface.

Further, the temperature measuring device 2 comprises a photoelectric temperature measuring sensor 2a, the photoelectric temperature measuring sensor 2a is used for measuring the temperature of the flame path in the furnace, and the temperature measuring device 2 is connected with the control system 1; the photoelectric temperature sensor is based on the blackbody radiation theory and adopts a comprehensive temperature measurement method; the device consists of a detection tube and a detector, has the advantages of contact and non-contact temperature measurement methods, and can be used for measuring the actual temperature in various high-temperature furnaces and melts without being influenced by environmental pollution and target blackness coefficients. The installation method of the photoelectric temperature sensor is not described in detail herein, and those skilled in the art should be able to install the photoelectric temperature sensor correctly according to the instruction and the working condition after purchasing the photoelectric temperature sensor commonly used in the market.

Further, the flashboard adjusting rod 3 comprises a connecting rod for connecting a flashboard in the furnace and a driving device for driving the connecting rod; one end of the connecting rod is connected with the flashboard, the other end of the connecting rod is connected with the driving device, and the connecting rod linearly pushes and pulls the flashboard to act under the action of the driving device; the flashboard adjusting rod 3 further comprises a position detection device for detecting the real-time position of the flashboard; the driving device and the position detection device are connected with the control system 1.

Furthermore, the driving device is of a motor driving gear and rack structure, a rack is arranged on the connecting rod, a motor output shaft fixed outside the petroleum coke calcining furnace is connected with a gear matched with the rack, the rotary motion of the motor output shaft is converted into the linear motion of the connecting rod through the matching of the gear and the rack, and the flashboard connected with the connecting rod makes the linear motion along with the connecting rod; obviously, the connecting rod has a guiding device, the connecting rod makes a linear motion in the furnace, the guiding device can be a limiting structure which is arranged in the furnace and is similar to a slide way, and the furnace mouth can also be made into a shape matched with the connecting rod, for example, the connecting rod and the furnace mouth are both made into a square shape, and the connecting rod makes a linear motion under the limitation of the square mouth, and the structure is not illustrated and described in detail herein.

Preferably, the motor is a servo motor.

Furthermore, the position detection device is interlocked with the driving device, an output shaft of the motor is also connected with an encoder, and the encoder is connected with the control system 1; an encoder (encoder) is a device that compiles, converts, and formats signals (e.g., bitstreams) or data into a form of signals that can be communicated, transmitted, and stored; the encoder converts angular displacement or linear displacement into an electric signal, wherein the former is called a code disc, and the latter is called a code ruler; the encoder can be divided into a contact type and a non-contact type according to a reading mode; encoders can be classified into an incremental type and an absolute type according to the working principle; the incremental encoder converts displacement into periodic electric signals, converts the electric signals into counting pulses, and expresses the magnitude of the displacement by the number of the pulses; each position of the absolute encoder corresponds to a certain digital code, so that its representation is only dependent on the start and end positions of the measurement, and not on the intermediate course of the measurement.

Specifically, the output shaft of the motor is a double output shaft, one end of the output shaft is connected with a gear (connected with a common key, key grooves are formed in the center of the gear and the output shaft of the motor, and the gear and the output shaft of the motor are connected through the key), the other end of the output shaft is connected with the encoder through a coupler, the rotation condition of the output shaft of the motor is fed back to the control system through the encoder, and the control system can monitor the position of the flashboard in real time according to the rotation condition.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.