Sootblowing device for flue gas waste heat boiler

Abstract

The present invention discloses a soot blowing device for a flue gas waste heat boiler, comprising an air supply mechanism, a driving mechanism connected to the air supply mechanism, a transmission mechanism connected to the driving mechanism, and an air supply duct mechanism matched with the transmission mechanism and connected to the air supply mechanism; the soot blowing device has a simple structure, good soot cleaning effect and high soot cleaning efficiency; the air supply duct mechanism is driven to rotate by the driving mechanism to realize a soot cleaning operation within a range of 360 degrees in the furnace, and the soot blowing is comprehensive; and the unique branch duct structure of the air supply duct mechanism ensures pressure balance during wind transportation, thereby improving the soot blowing effect.

Description

Technical Field

[0001] The invention relates to the technical field of boiler equipment, and in particular to a sootblowing device for a flue gas waste heat boiler. Background Art

[0002] The normal operation of the boiler will generate a lot of dust, which is easy to accumulate on the boiler heating surface, such as convection tubes, seriously affecting the normal operation of the boiler. In order to prevent ash accumulation in the boiler, a sootblower is usually installed in the boiler. The existing sootblower is large in size and inconvenient to install. In addition, its range of action in the boiler is not comprehensive, there are dead corners for blowing, the sootblowing efficiency is low, and the sootblowing effect is poor. Summary of the invention

[0003] The object of the present invention is to provide a sootblowing device for a flue gas waste heat boiler, so as to solve the problem that the sootblowing effect of the existing sootblowing equipment is poor.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a sootblower for a flue gas waste heat boiler comprises an air supply mechanism, a driving mechanism connected to the air supply mechanism, a transmission mechanism connected to the driving mechanism, and an air supply duct mechanism connected to the transmission mechanism and connected to the air supply mechanism;

[0005] The transmission mechanism includes a transmission box with a hollow structure inside, a transmission gear located in the transmission box and connected to the driving mechanism, the driving mechanism is arranged on the side wall of the transmission box, and a bearing that cooperates with the air supply duct mechanism is arranged on the side wall of the transmission box away from the driving mechanism, and the end of the air supply duct mechanism passes through the transmission box and is connected to the transmission gear.

[0006] Furthermore, the driving mechanism includes a stepper motor and a controller communicatively connected to the stepper motor.

[0007] Furthermore, the air supply duct mechanism includes an air supply duct cooperatively connected to the transmission gear, a soot blowing duct connected to the air supply duct, and a duct connector connected between the air supply duct and the soot blowing duct.

[0008] Furthermore, the sootblowing pipe includes a main pipe connected to the pipe connector and a plurality of branch pipes arranged inside the main pipe; ends of the branch pipes are inclined toward the outside of the main pipe and extend to the outside of the main pipe.

[0009] Furthermore, a fixing plate is provided inside the pipe connector, a plurality of through holes are formed on the fixing plate, and ends of the branch pipes away from the main pipes are fitted and connected in the through holes.

[0010] Furthermore, a strip groove is opened along the outer wall of the main pipe, and a plurality of slot holes are distributed on the strip groove. The end of the branch pipe away from the pipe connector obliquely passes through the slot holes.

[0011] Furthermore, internal threads are arranged on the inner walls at both ends of the pipe connector, and external threads matching with the internal threads are arranged on the outer walls at the end of the air supply pipe and the outer walls at the end of the main pipe.

[0012] Furthermore, a supporting protective sleeve is provided on the outer wall of the air supply duct, and an end of the supporting protective sleeve is connected to the outer wall of the transmission box.

[0013] Furthermore, the supporting protective sleeve is connected to the outer wall of the transmission box by bolts.

[0014] Furthermore, a support plate is provided on the outer wall of the support protection sleeve.

[0015] The present invention has the following beneficial effects: the soot blowing device for the flue gas waste heat boiler provided by the present invention has a simple structure, good soot cleaning effect and high soot cleaning efficiency. The air supply duct mechanism is driven to rotate by a driving mechanism, so that a soot cleaning operation within a range of 360° can be realized in the furnace, and the blowing is comprehensive. The rotation speed of the air supply duct mechanism can be controlled by the driving mechanism, so that places with different dust accumulation thicknesses in the furnace can be blown at different times in a targeted manner, thereby reducing the cost to a certain extent. Moreover, the unique branch duct structure of the air supply duct mechanism ensures pressure balance during wind transportation, thereby improving the soot blowing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is the front view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the pipeline connector in the present invention; DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] like Figures 1 to 3 As shown, the soot blowing device for the flue gas waste heat boiler includes an air supply mechanism 1, a driving mechanism 2 connected to the air supply mechanism 1, a transmission mechanism 3 connected to the driving mechanism 2, and an air supply duct mechanism 4 matched with the transmission mechanism 3 and connected to the air supply mechanism 1.

[0021] The air supply mechanism 1 provides a wind source for the soot blowing device as a whole, ensures sufficient wind input, and provides reliable protection for the soot blowing operation. It includes a fan and a pipe connected to the fan. The driving mechanism 2 is the driving component of the device as a whole, which includes a stepper motor and a controller connected to the stepper motor. The stepper motor is used to drive the air supply duct mechanism 4 to rotate. The controller adopts a single-chip microcomputer. The main function of the single-chip microcomputer is to continuously receive, analyze, and execute instructions according to pre-written programs to achieve the expected results of the user; that is, the controller controls the speed of the stepper motor, and then controls the rotation speed of the air supply duct mechanism 4 and the soot blowing time, thereby reducing costs and improving soot blowing effects and efficiency.

[0022] The transmission mechanism 3 cooperates with the driving mechanism 2 to transmit the power generated by the driving mechanism 2 to the air supply duct mechanism 4, thereby ensuring the movement reliability of the air supply duct mechanism 4. The transmission mechanism 3 includes a transmission box 30 with a hollow structure inside, a transmission gear located in the transmission box 30 and connected with the driving mechanism 2, the driving mechanism 2 is arranged on the side wall of the transmission box 30, and a bearing that cooperates with the air supply duct mechanism 4 is arranged on the side wall of the transmission box 30 away from the driving mechanism 2, and the end of the air supply duct mechanism 4 passes through the transmission box 30 and is connected with the transmission gear.

[0023] A fixing plate 420 is disposed inside the pipe connector 42 . A plurality of through holes 421 are formed on the fixing plate 420 . The ends of the branch pipes 411 away from the main pipe 410 are fitted and connected in the through holes 421 .

[0024] The air supply duct mechanism 4 includes an air supply duct 40 connected to the transmission gear, a soot blowing duct 41 connected to the air supply duct 40, and a duct connector 42 connected between the air supply duct 40 and the soot blowing duct 41. The driving mechanism 2 drives the transmission gear to rotate, and then drives the air supply duct 40 and the soot blowing duct 41 to rotate, so that the soot blowing duct 41 rotates within a range of 360°, ensuring the blowing at various positions of the furnace and improving the soot blowing effect. The duct connector 42 is a connecting component between the air supply duct 40 and the soot blowing duct 41 to ensure the reliable connection between the two, and the inner walls of both ends of the duct connector 42 are provided with internal threads, and the outer walls of the ends of the air supply duct 40 and the outer walls of the ends of the main duct 410 are provided with external threads that match the internal threads. Through the threaded connection, the connection strength is guaranteed, and it is convenient to disassemble between the components, and it is convenient for cleaning, maintenance and replacement, and has good performance.

[0025] In order to further improve the soot blowing effect, in the present invention, the soot blowing pipe 41 includes a main pipe 410 connected to the pipe connector 42 and a plurality of branch pipes 411 arranged inside the main pipe 410; the end of the branch pipe 411 is inclined toward the outside of the main pipe 410 and extends to the outside of the main pipe 410. A strip groove 412 is provided along the outer wall of the main pipe 410, and a plurality of slot holes 413 are distributed on the strip groove 412. The end of the branch pipe 411 away from the pipe connector 42 is inclined to penetrate the slot holes 413. There are multiple branch pipes 411 of different lengths. The branch pipes 411 of different lengths are respectively matched with the slot holes 413 at different positions, and respectively penetrate the slot holes 413 and extend to the outside of the main pipe 410 to realize the soot blowing operation. During use, the pressure balance is ensured, and the poor soot blowing effect caused by insufficient pressure at the far end of the pipe is avoided, and the soot blowing effect is good.

[0026] In order to improve the stable and reliable operation performance during the soot blowing process, in the present invention, the outer wall of the air supply duct 40 is provided with a support protective sleeve 43, and the end of the support protective sleeve 43 is connected to the outer wall of the transmission box 30. The support protective sleeve 43 is connected to the outer wall of the transmission box 30 by bolts. The outer wall of the support protective sleeve 43 is provided with a support plate 44.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sootblowing device for a flue gas waste heat boiler, characterized in that: It comprises an air supply mechanism (1), a driving mechanism (2) connected to the air supply mechanism (1), a transmission mechanism (3) connected in cooperation with the driving mechanism (2), and an air supply duct mechanism (4) that cooperates with the transmission mechanism (3) and is connected to the air supply mechanism (1); The transmission mechanism (3) comprises a transmission box (30) with a hollow structure inside, a transmission gear located in the transmission box (30) and connected to the driving mechanism (2), the driving mechanism (2) is arranged on the side wall of the transmission box (30), a bearing matched with the air supply duct mechanism (4) is arranged on the side wall of the transmission box (30) away from the driving mechanism (2), and the end of the air supply duct mechanism (4) passes through the transmission box (30) and is connected to the transmission gear; The air supply duct mechanism (4) comprises an air supply duct (40) connected to the transmission gear, a soot blowing duct (41) connected to the air supply duct (40), and a duct connector (42) connected between the air supply duct (40) and the soot blowing duct (41); The sootblowing pipe (41) comprises a main pipe (410) connected to the pipe connector (42) and a plurality of branch pipes (411) arranged inside the main pipe (410); ends of the branch pipes (411) are inclined toward the outside of the main pipe (410) and extend to the outside of the main pipe (410); A strip groove (412) is provided along the outer wall of the main pipe (410), a plurality of slot holes (413) are distributed on the strip groove (412), and the end of the branch pipe (411) away from the pipe connector (42) obliquely passes through the slot holes (413); There are multiple branch pipes (411) of different lengths. The branch pipes (411) of different lengths respectively cooperate with the slots (413) at different positions and respectively penetrate the slots (413) and extend to the outside of the main pipe (410).

2. The sootblowing device for a flue gas waste heat boiler according to claim 1, characterized in that: The driving mechanism (2) comprises a stepping motor and a controller which is communicatively connected to the stepping motor.

3. The sootblowing device for a flue gas waste heat boiler according to claim 1, characterized in that: A fixing plate (420) is provided inside the pipe connector (42), and a plurality of through holes (421) are provided on the fixing plate (420). The ends of the branch pipes (411) away from the main pipe (410) are fitted and connected in the through holes (421).

4. The sootblowing device for a flue gas waste heat boiler according to claim 1, characterized in that: Internal threads are provided on the inner walls at both ends of the pipe connector (42), and external threads matching the internal threads are provided on the outer walls at the end of the air supply pipe (40) and the outer walls at the end of the main pipe (410).

5. The sootblowing device for a flue gas waste heat boiler according to claim 1, characterized in that: The outer wall of the air supply duct (40) is provided with a supporting protective sleeve (43), and the end of the supporting protective sleeve (43) is connected to the outer wall of the transmission box (30).

6. The sootblowing device for a flue gas waste heat boiler according to claim 5, characterized in that: The supporting protective sleeve (43) is connected to the outer wall of the transmission box (30) by means of bolts.

7. The sootblowing device for a flue gas waste heat boiler according to claim 6, characterized in that: The outer wall of the supporting protective sleeve (43) is provided with a supporting plate (44).

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