A line-driven burner with nozzle angle adjustment

Abstract

A line-driven burner with adjustable nozzle angle. The invention relates to an industrial combustion device, and in particular to a line-driven burner with adjustable nozzle angle. The invention provides a line-driven burner with adjustable nozzle angle, which has a simple structure, is easy to adjust, and is convenient to operate. The burner comprises a burner casing, an igniter is arranged at the center of one end of the burner casing, and sleeve holes are evenly distributed around the igniter; the burner casing comprises a servo drive assembly and a plurality of spray groups, the servo drive assembly comprises three servo motors, and the three servo motors are arranged at the other end of the burner casing; the spray groups correspond to the sleeve holes one by one, the spray groups comprise a nozzle with a hollow hole and three flexible wires, the nozzle is arranged in the sleeve holes, one end of the flexible wire is connected to the motor shaft of the servo motor one by one, and the other end is connected to the nozzles respectively, and the sleeve holes are drum-shaped. The invention is convenient to process and reliable to operate.

Description

Technical Field

[0001] The invention relates to an industrial combustion device, in particular to a line-driven burner capable of adjusting a nozzle angle. Background Art

[0002] At present, there are many types of hot air furnaces that provide high-temperature flue gas in lignite and coal slime drying systems, generally layer-burning furnaces, reciprocating hot air furnaces, boiling furnaces, etc. They generally use lump coal, mixed coal and other raw coal as fuel, and some use coarse coal powder, and then work through burners.

[0003] With the increasing requirements of the domestic hot processing industry, the requirements for burners that use pipelines to transport combustibles are increasing. In the field of hot processing, there are different requirements for the area and intensity of the flame combustion of the object to be processed. Ordinary burners cannot meet the increasingly improved processing accuracy in the field of hot processing, such as the flame injection direction and angle cannot be adjusted. Summary of the invention

[0004] In view of the above problems, the present invention provides a burner with a line-driven nozzle angle adjustment which is simple in structure, easy to adjust and convenient to operate.

[0005] The technical solution of the present invention is as follows: comprising a burner casing, wherein an igniter is provided at the center of one end of the burner casing, and casing holes are evenly distributed around the igniter;

[0006] It also includes servo drive components and several spray groups.

[0007] The servo drive assembly includes three servo motors, which are arranged at the other end of the burner casing;

[0008] The nozzle groups correspond to the sleeve holes one by one.

[0009] The spray group includes a spray nozzle with a hollow hole and three flexible wires. The spray nozzle is arranged in the sleeve hole. One end of the flexible wire is connected to the motor shaft of the servo motor in a one-to-one correspondence, and the other end is connected to the spray nozzles respectively.

[0010] Among them, the three flexible lines located on the nozzle are centered on the hollow hole of the nozzle, and the angle between any two flexible lines is 120°.

[0011] The sleeve hole is drum-shaped.

[0012] The nozzle is drum-shaped.

[0013] It also includes a guide group, which corresponds to the flexible line one by one. The guide group includes a pair of fixed pulleys, which are arranged in the burner casing. The flexible line is connected to the motor shaft of the servo motor along the pair of fixed pulleys.

[0014] A winding rod is arranged on the motor shaft of the servo motor, and the flexible wire is connected to the winding rod.

[0015] The number of the holes is eight.

[0016] The present invention arranges a servo drive assembly and a plurality of nozzle groups in a burner sleeve shell. The servo drive assembly is actuated by a servo motor. The nozzle group includes a nozzle and three flexible wires. The flexible wires are connected to a motor shaft of the servo motor and the nozzle. The flexible wires are driven by controlling the rotation speed of the motor shaft to adjust the position of the nozzle in the sleeve hole, thereby facilitating the adjustment of the change of the nozzle angle.

[0017] The invention is convenient to process and reliable to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention,

[0019] Figure 2 This is a schematic diagram of the connection structure between the nozzle and the flexible line.

[0020] Figure 3 It is a schematic diagram of the structure of the servo drive assembly.

[0021] Figure 4 This is a schematic diagram of the nozzle angle change.

[0022] Figure 5 It is a schematic diagram of the nozzle and the installation of the nozzle;

[0023] In the figure, 1 is the burner casing, 2 is the casing hole, 3 is the nozzle, 4 is the fixed pulley, 5 is the flexible wire, 6 is the igniter, 7 is the winding rod, and 8 is the servo motor. DETAILED DESCRIPTION

[0024] The present invention Figure 1-5 As shown, it comprises a burner casing 1, an igniter 6 is provided at the center of one end of the burner casing 1, and casing holes 2 are evenly distributed around the igniter;

[0025] It also includes servo drive components and several spray groups.

[0026] The servo drive assembly includes three servo motors 8, which are arranged at the other end of the burner casing;

[0027] The nozzle groups correspond to the sleeve holes 2 one by one.

[0028] The spray group includes a spray nozzle 3 with a hollow hole and three flexible wires 5. The spray nozzle 3 is arranged in the sleeve hole. One end of the flexible wire is connected to the motor shaft of the servo motor 8 one by one, and the other end is connected to the spray nozzle 3.

[0029] Among them, the three flexible lines located on the nozzle are centered on the hollow hole of the nozzle, and the angle between any two flexible lines is 120°.

[0030] The present invention arranges a servo drive assembly and a plurality of nozzle groups in the burner casing, the servo drive assembly is actuated by a servo motor, the nozzle group includes a nozzle and three flexible wires, the flexible wires are connected to the motor shaft of the servo motor and the nozzle, and the flexible wires are driven by controlling the rotation speed of the motor shaft, thereby realizing the adjustment of the nozzle position in the casing hole, and facilitating the change and adjustment of the nozzle angle. When the flexible wire is working, a high heat-resistant flexible wire is selected to increase the service life.

[0031] The sleeve hole 2 is drum-shaped, which is easy to process and can reliably place the nozzle.

[0032] The nozzle 3 is in a drum shape, which is convenient for placement in the sleeve hole. At the same time, it is arranged in a drum shape to facilitate position adjustment.

[0033] It also includes a guide group, which corresponds to the flexible wire one by one, and includes a pair of fixed pulleys 4, which are arranged in the burner casing, and the flexible wire is connected to the motor shaft of the servo motor along the pair of fixed pulleys. The guide group is provided to facilitate the guidance of the flexible wire and avoid mutual interference between the flexible wires.

[0034] A winding rod 7 is provided on the motor shaft of the servo motor, and the flexible wire is connected to the winding rod, which is convenient for increasing the length, improving the connection reliability of the flexible wire, and avoiding mutual interference between the flexible wires.

[0035] The sleeve holes 2 are provided with eight holes, which are evenly distributed and reliable, so as to improve the subsequent spraying effect.

[0036] like Figure 4 As shown, the change of each high heat resistance flexible line is X OA , X OB , X OC , tension is positive, relaxation is negative, take OA as the Y axis, BC as the X axis, and their intersection as the origin, X OA Projection on the Y axis is X OA , X OA The projection on the X axis is 0, X OB The projection on the Y axis is X OB The projection on the X axis is X OC The projection on the Y axis is X OC The projection on the X axis is Then the X change of the center 0 is Then the Y change of the center 0 is The length of the hypotenuse is So its angle is It is thus possible to control the angle by stretching, such as Figure 5 As shown, L is the distance between the two ends of the nozzle;

[0037] Due to the high continuity of the line drive, in order to avoid errors caused by vibration and speed mutation, the following signal control algorithm including the three links of integral differential proportion is used to control the tightness variable of the high heat-resistant flexible line and the angular velocity and speed of the servo motor. Since the change amount of the three high heat-resistant flexible lines is X OA , X OB , X OC According to the formula, the output X(t) of the end position of three high heat-resistant flexible lines is calculated as

[0038]

[0039]

[0040]

[0041] Where: X OA (t), X OB (t), X OC (t) is the position control output of each high heat resistance flexible wire, K p is the position control proportional coefficient, T i is the position control integral time constant, T d is the position control derivative time constant.

[0042] In the absence of a control algorithm, due to the lag between the position variable and the control time, over-tensioning can easily cause breakage. In order to avoid damage to the high heat-resistant flexible line or vibration affecting the accuracy caused by excessive tension and relaxation, the above algorithm is used to reduce the adjustment time to improve the control accuracy, and achieve relative stability in the process of line driving by the signal control algorithm.

[0043] The present invention adopts a line drive to control the angle change of eight drum-shaped hollow hole nozzles to achieve the shape change of the jet flame. The burner is suitable for high requirements in industrial heat production.

[0044] Regarding the contents disclosed in this case, there are a few points that need to be explained:

[0045] (1) The drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case, and other structures can refer to the general design;

[0046] (2) In the absence of conflict, the embodiments and features of the embodiments disclosed in this case can be combined with each other to obtain new embodiments;

[0047] The above are only specific implementation methods disclosed in this case, but the protection scope of the present disclosure is not limited thereto. The protection scope disclosed in this case should be based on the protection scope of the claims.

Claims

1. A line-driven burner with adjustable nozzle angle, comprising a burner casing, an igniter is arranged at the center of one end of the burner casing, and sleeve holes are evenly distributed around the igniter; characterized in that: It also includes servo drive components and several spray groups. The servo drive assembly includes three servo motors, which are arranged at the other end of the burner casing; The nozzle groups correspond to the sleeve holes one by one. The spray group includes a spray nozzle with a hollow hole and three flexible wires. The spray nozzle is arranged in the sleeve hole. One end of the flexible wire is connected to the motor shaft of the servo motor in a one-to-one correspondence, and the other end is connected to the spray nozzles respectively. Among them, the three flexible lines located on the nozzle are centered on the hollow hole of the nozzle, and the angle between any two flexible lines is 120°; The changes of the three high heat resistance flexible lines are X OA , X OB , X OC ,According to the formula, the output X(t) of the end position of three high heat-resistant flexible lines is calculated as: Where: X OA (t), X OB (t), X OC (t), is the position control output of the high heat resistance flexible wire, K p is the position control proportional coefficient, T i is the position control integral time constant, T d is the position control derivative time constant.

2. A line-driven burner with nozzle angle adjustment according to claim 1, characterized in that: The sleeve hole is drum-shaped.

3. A line-driven burner with nozzle angle adjustment according to claim 2, characterized in that: The nozzle is drum-shaped.

4. A line-driven burner with nozzle angle adjustment according to claim 1, characterized in that: It also includes a guide group, which corresponds to the flexible line one by one. The guide group includes a pair of fixed pulleys, which are arranged in the burner casing. The flexible line is connected to the motor shaft of the servo motor along the pair of fixed pulleys.

5. A line-driven burner with nozzle angle adjustment according to claim 1, characterized in that: A winding rod is arranged on the motor shaft of the servo motor, and the flexible wire is connected to the winding rod.

6. A wire-driven burner with nozzle angle adjustment according to claim 1, characterized in that: The number of the holes is eight.

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