Telescopic pulse soot blower capable of blowing soot at multiple angles and soot blowing method thereof

Abstract

The invention provides a telescopic pulse soot blower capable of blowing soot at multiple angles and a soot blowing method of the telescopic pulse soot blower, and belongs to the technical field of boiler soot blowing. The rotary telescopic soot blower solves the problem that an existing rotary telescopic soot blower is prone to corrosion and abrasion due to the fact that chain transmission is prone to being affected by environments and media. The device comprises a fixed inner core pipe, an advancing device, a multi-point rotating mechanism, an outer spraying pipe, a combined propelling device, a base and a nozzle, the combined propelling device is installed at one end of the base, the fixed inner core pipe is arranged above the combined propelling device, the outer spraying pipe is connected to the outer side of the fixed inner core pipe in a sleeving mode, and the outer spraying pipe is connected with the advancing device. The advancing device is connected with the propelling device, a multi-point rotating mechanism is arranged on the outer side of the outer spraying pipe, the nozzle is connected with the outer spraying pipe, and a fuel gas mixer inlet is formed in the top of the fixed inner core pipe. The soot blower is mainly used for boiler soot blowing.

Description

Technical Field

[0001] The invention belongs to the technical field of boiler sootblowing, and in particular relates to a telescopic pulse sootblower capable of sootblowing at multiple angles and a sootblowing method thereof. Background Art

[0002] At present, gas pulse soot blowers, as traditional soot blowers, usually have three structural forms: fixed gas pulse soot blowers, fixed rotary gas pulse soot blowers, and rotary telescopic gas pulse soot blowers. Among them, fixed gas pulse soot blowers account for the largest proportion of gas pulse soot blowers, but this type of soot blower has certain limitations, such as: soot blowing can only be carried out at a fixed point, resulting in a small soot blowing range and a soot blowing dead angle. Soot blowing scours the fixed heating surface for a long time, causing certain wear on the heating surface of the boiler. A part of the fixed nozzle of the traditional gas pulse soot blower must be fixed in the boiler flue, which will cause wear and material corrosion to the nozzle that contacts the flue gas carrying particles and corrosive components, especially in waste incinerators. The situation is particularly obvious, and the rotary telescopic gas pulse soot blower that can overcome the above problems not only has a small market share, but the chain drive is relatively complicated in manufacturing and installation, and requires the use of more sophisticated transmission components. Therefore, its manufacturing cost is relatively high. Due to the rotary telescopic soot blower, the nozzle needs to be reversed, but in order to achieve the normal use of the chain during reversal and prevent the chain from slipping, a tensioning device must be added, which increases the cost and the complexity of manufacturing and installation. Since the chain drive is easily affected by the environment and the medium, especially in the boiler room, there is a lot of smoke and dust and it is mostly an acidic environment. The chain is easily corroded and worn, and requires regular grease lubrication and cleaning and maintenance to ensure its service life and stability. Summary of the invention

[0003] In view of this, the present invention aims to provide a telescopic pulse sootblower capable of blowing soot at multiple angles and a sootblowing method thereof, so as to solve the problem that the existing rotary telescopic sootblower is easily corroded and worn due to the chain drive being easily affected by the environment and the medium.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A telescopic pulse sootblower capable of blowing soot at multiple angles comprises a fixed inner core tube, a travelling device, a multi-point rotating mechanism, an outer nozzle, a combined propulsion device, a base and a nozzle, wherein the combined propulsion device is mounted at one end of the base, the fixed inner core tube is arranged above the combined propulsion device, the outer nozzle is sleeved on the outer side of the fixed inner core tube, the outer nozzle is connected to the travelling device, the travelling device is connected to the combined propulsion device, a multi-point rotating mechanism is arranged on the outer side of the outer nozzle, the nozzle is connected to the outer nozzle, and a gas mixer inlet is arranged on the top of the fixed inner core tube.

[0006] Furthermore, the combined propulsion device includes a double gear, a rack rod, a section gear and a double connecting rod, one end of the double connecting rod is connected to the section gear, and the other end is connected to the second motor reducer unit, the section gear is meshed with the double gear, the double gear is connected to the rack rod, and the rack rod is connected to the travel device.

[0007] Furthermore, the axial rotation angle of the cutting gear is 100°, and it advances or retreats a certain distance every time it rotates 1°.

[0008] Furthermore, the multi-point rotating mechanism includes an active dial wheel and a driven 16-point dial wheel, the active dial wheel is meshedly connected with the driven 16-point dial wheel, and the driven 16-point dial wheel is installed on the outside of the outer nozzle.

[0009] Furthermore, the active dial is connected to the first motor reduction gear unit.

[0010] Furthermore, the bottom of the traveling device is connected to a roller slider, and the roller slider is slidably mounted on two linear guide rails, and the two linear guide rails are mounted on a base.

[0011] Furthermore, an accordion protective cover is installed on the outer side of the linear guide rail.

[0012] Furthermore, an air curtain device is provided on the outer side of the gas mixer inlet of the fixed inner core tube, and an air curtain device air inlet is provided on the side end of the air curtain device.

[0013] Furthermore, a junction box and a cable tank chain are installed on one side of the base.

[0014] A soot blowing method of a telescopic pulse soot blower capable of soot blowing at multiple angles, comprising the following steps:

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can carry out transportation in the depth direction of the flue of the nozzle, increase the coverage area of ​​the spherical wave after the deflagration, and no longer need to clean the fixed heating surface, thereby preventing damage to the heating surface.

[0017] 2. The present invention can perform rotary cleaning in a 360° circumferential direction, thereby increasing the sweeping area and reducing the occurrence of soot blowing "dead corners".

[0018] 3. The nozzle of the present invention can be withdrawn from the flue, which avoids the nozzle being worn by flue gas and corroded by the corrosive components of flue gas, greatly prolonging the service life of the nozzle and saving customers a lot of later purchase costs and manual replacement workload.

[0019] 4. The present invention uses a multi-point rotating mechanism, which is simple to manufacture and install, low in cost, and convenient to maintain. In terms of accuracy, it can fully meet the use requirements for boiler soot blowing.

[0020] 5. The present invention adopts the form of a slide rail and a slider outer cover accordion protective cover, which can effectively resist the complex environment inside the boiler room and ensure the accuracy of the long-term operation of the equipment, and the overall cost is relatively low.

[0021] 6. The inner core of the air curtain device of the present invention is in a form where the tangential normal line in the circumferential direction is 45° downward, so that the protective wind can fully fill the entire nozzle and effectively protect the equipment.

[0022] 7. The propulsion method of the present invention is relatively strong and durable, and can meet the requirements of safe and long-term use in the poor environmental conditions of the boiler room. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of a telescopic pulse soot blower capable of soot blowing at multiple angles according to the present invention;

[0025] Figure 2 It is a structural schematic diagram of the combined propulsion device of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the multi-point rotating mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a special nozzle used in the present invention;

[0028] Figure 5 Simulate the trace distribution for the process status of common air curtain forms on the market;

[0029] Figure 6 The trace distribution of the air curtain process state simulation of the present invention.

[0030] 1-wind curtain device, 2-fixed inner core tube, 3-travel device, 4-multi-point rotating mechanism, 5-first motor reduction unit, 6-external nozzle, 7-junction box, 8-combined propulsion device, 9-roller slider, 10-linear guide rail, 11-cable tank chain, 12-base, 13-air inlet of wind curtain device, 14-gas mixer inlet, 15-double gear, 16-rack rod, 17-section gear, 18-double connecting rod, 19-second motor reduction unit, 20-active dial wheel, 21-driven 16-point dial wheel, 22-nozzle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0032] Specific implementation method 1: See Figure 1 -:6 describes the present embodiment, a telescopic pulse sootblower capable of blowing soot at multiple angles, comprising a fixed inner core tube 2, a traveling device 3, a multi-point rotating mechanism 4, an outer nozzle 6, a combined propulsion device 8, a base 12 and a nozzle 22, wherein the combined propulsion device 8 is mounted at one end of the base 12, the fixed inner core tube 2 is arranged above the combined propulsion device 8, the outer nozzle 6 is sleeved on the outside of the fixed inner core tube 2, the outer nozzle 6 is connected to the traveling device 3, the traveling device 3 is connected to the combined propulsion device 8, a multi-point rotating mechanism 4 is arranged on the outside of the outer nozzle 6, the nozzle 22 is connected to the outer nozzle 6, a gas mixer inlet 14 is arranged on the top of the fixed inner core tube 2, and the combined propulsion device 8 It includes a double gear 15, a rack rod 16, a cutting gear 17 and a double connecting rod 18, one end of the double connecting rod 18 is connected to the cutting gear 17, and the other end is connected to the second motor reducer unit 19, the cutting gear 17 is meshed with the double gear 15, the double gear 15 is connected to the rack rod 16, the rack rod 16 is connected to the traveling device 3, the axial rotation angle of the cutting gear 17 is 100°, the multi-point rotating mechanism 4 includes an active dial wheel 20 and a driven dial wheel 21, the active dial wheel 20 is meshed with the driven dial wheel 21, the driven dial wheel 21 is installed on the outside of the outer nozzle 6, and the active dial wheel 20 is connected to the first motor reducer unit 5.

[0033] like Figure 1 As shown, the pulse soot blower is moved into the furnace wall of the boiler to be blown, and the second motor reducer unit 19 is started to drive the double connecting rod 18 to move, thereby driving the cutting gear 17 to reciprocate, causing the double gear 15 to rotate, and the double gear 15 drives the rack rod 16 to reciprocate, thereby causing the traveling device 3 to drive the outer nozzle 6 to perform telescopic movement, so that the nozzle 22 extends into the position to be cleaned in the boiler, and by starting the first motor reducer unit 5 to drive the multi-point rotating mechanism 4 and the outer nozzle 6 to rotate at a specified angle, adjust to a specified position, and start soot blowing inside the boiler.

[0034] The device can transport the nozzle 22 in the flue depth direction, increase the coverage area of ​​the spherical wave after the deflagration, no longer clean the fixed heating surface, prevent damage to the heating surface, and can perform rotary cleaning in the 360° circumferential direction, increase the sweeping area, and reduce the appearance of soot blowing "dead angles". The comparison table of the effects of various types of gas soot blowers and the device is as follows:

[0035]

[0036] From the comparison, it can be seen that the multi-angle rotating telescopic nozzle is nearly twice as effective as the rotating nozzle sootblower in reducing fly ash resistance and lowering the smoke temperature of the heating surface, and nearly three times as effective as the fixed nozzle.

[0037] Furthermore, the bottom of the traveling device 3 is connected to the roller slider 9, and the roller slider 9 is slidably installed on two linear guides 10, and the two linear guides 10 are installed on the base 12. An accordion protective cover is installed on the outer side of the linear guide 10, which can effectively resist the complex environment inside the boiler room and ensure the accuracy of the long-term operation of the equipment, and the overall cost is relatively low.

[0038] Furthermore, a wind curtain device 1 is provided on the outside of the gas mixer inlet 14 of the fixed inner core tube 2, and a wind curtain device air inlet 13 is provided on the side end of the wind curtain device 1. The protective wind can fully fill the entire nozzle through the wind curtain device air inlet 13 to prevent smoke from flowing back into the equipment, thereby effectively protecting the equipment.

[0039] Furthermore, a junction box 7 and a cable tank chain 11 are installed on one side of the base 12 .

[0040] Specific implementation method 2: During the sootblowing process, since the sootblower nozzle will penetrate deep into the boiler, fly ash in the flue gas will return to the equipment through the nozzle, which is particularly obvious in environments with poor working conditions, such as garbage furnaces. Therefore, based on implementation method 1, the nozzle 22 is designed to be a nozzle with a special shape.

[0041] Specific implementation method three: see Figure 1-6 The present embodiment is described as a sootblowing method of a telescopic pulse sootblower capable of sootblowing at multiple angles, which comprises the following steps:

[0042] Step 1: Move the pulse soot blower to the furnace opening of the boiler to be blown;

[0043] Step 2: Start the second motor reducer unit 19 to drive the double connecting rod 18 to move, and then drive the cutting gear 17 to reciprocate, so that the double gear 15 rotates, and the double gear 15 drives the rack rod 16 to reciprocate, and then the travel device 3 drives the outer nozzle 6 to perform telescopic movement, so that the nozzle 22 extends into the position to be cleaned in the boiler;

[0044] Step 3: Start the first motor reducer unit 5 to drive the multi-point rotating mechanism 4 and the outer nozzle 6 to rotate at a specified angle;

[0045] Step 4: Adjust to the designated position and start soot blowing inside the boiler.

[0046] Furthermore, the base 12 must be corrected for straightness to ensure that it is within the straightness of ±0.2mm. If it exceeds the range, it will be leveled by mechanical methods. The linear guide 10 is coated with anti-rust oil before formal installation. When the linear guide 10 is installed on the base 12 frame, the parallelism between the two side rails shall not be greater than 0.05mm. When tightening the slide rail screws, the screws should be tightened from the distal end to the proximal end in sequence. When fixing the inner core tube 2 and the base 12, the horizontality must be ≤0.5mm. The supporting bull's eye bearing on the limit device of the outer nozzle 6 must ensure full contact with the gun barrel, and the phenomenon of the gun barrel "hanging" must not occur. The accuracy of the groove wheel in the multi-point rotating mechanism 4 must be guaranteed after processing, and no defects such as burrs and pits should appear.

[0047] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A telescopic pulse sootblower capable of blowing soot at multiple angles, characterized in that: The invention comprises a fixed inner core tube (2), a travel device (3), a multi-point rotating mechanism (4), an outer nozzle (6), a combined propulsion device (8), a base (12) and a nozzle (22), wherein the combined propulsion device (8) is installed at one end of the base (12), the fixed inner core tube (2) is arranged above the combined propulsion device (8), the outer nozzle (6) is sleeved on the outer side of the fixed inner core tube (2), the outer nozzle (6) is connected to the travel device (3), the travel device (3) is connected to the combined propulsion device (8), the outer side of the outer nozzle (6) is provided with a multi-point rotating mechanism (4), the nozzle (22) is connected to the outer nozzle (6), and the top of the fixed inner core tube (2) is provided with a gas mixer inlet (14).

2. The telescopic pulse sootblower capable of blowing soot at multiple angles according to claim 1, characterized in that: The combined propulsion device (8) comprises a double gear (15), a rack rod (16), a cutting gear (17) and a double connecting rod (18), one end of the double connecting rod (18) is connected to the cutting gear (17), and the other end is connected to the second motor reduction gear unit (19), the cutting gear (17) is meshedly connected to the double gear (15), the double gear (15) is connected to the rack rod (16), and the rack rod (16) is connected to the traveling device (3).

3. The telescopic pulse sootblower capable of sootblowing at multiple angles according to claim 2, characterized in that: The axial rotation angle of the cutting gear (17) is 100°.

4. The telescopic pulse sootblower capable of sootblowing at multiple angles according to claim 1, characterized in that: The multi-point rotating mechanism (4) comprises an active dial wheel (20) and a driven 16-point dial wheel (21), wherein the active dial wheel (20) is meshingly connected with the driven 16-point dial wheel (21), and the driven 16-point dial wheel (21) is installed outside the outer nozzle (6).

5. The telescopic pulse sootblower capable of sootblowing at multiple angles according to claim 4, characterized in that: The active dial wheel (20) is connected to the first motor reduction gear unit (5).

6. The telescopic pulse sootblower capable of blowing soot at multiple angles according to claim 1, characterized in that: The bottom of the traveling device (3) is connected to a roller slider (9), and the roller slider (9) is slidably mounted on two linear guide rails (10), and the two linear guide rails (10) are mounted on a base (12).

7. The telescopic pulse sootblower capable of blowing soot at multiple angles according to claim 6, characterized in that: An accordion protective cover is installed on the outer side of the linear guide rail (10).

8. The telescopic pulse sootblower capable of blowing soot at multiple angles according to claim 1, characterized in that: An air curtain device (1) is provided on the outside of the gas mixer inlet (14) of the fixed inner core tube (2), and an air curtain device air inlet (13) is provided at the side end of the air curtain device (1).

9. The telescopic pulse sootblower capable of sootblowing at multiple angles according to claim 1, characterized in that: A junction box (7) and a cable tank chain (11) are installed on one side of the base (12).

10. A sootblowing method using a telescopic pulse sootblower capable of sootblowing at multiple angles as claimed in any one of claims 1 to 9, characterized in that: It includes the following steps: Step 1: Move the pulse soot blower into the furnace of the boiler to be blown; Step 2: Start the second motor reduction unit (19), drive the double connecting rod (18) to move, and then drive the cutting gear (17) to reciprocate, so that the double gear (15) rotates, and the double gear (15) drives the rack rod (16) to reciprocate, and then the travel device (3) drives the outer nozzle (6) to perform telescopic movement, so that the nozzle (22) extends into the position to be cleaned in the boiler; Step 3: Starting the first motor reducer unit (5) to drive the multi-point rotating mechanism (4) and the outer nozzle (6) to rotate at a specified angle; Step 4: Adjust to the designated position and start soot blowing inside the boiler.

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