Boiler dry bottom hopper ash removal device

Abstract

The embodiment of the invention provides a boiler dry bottom hopper ash removal device. The boiler dry bottom hopper ash removal device comprises two rails which are oppositely arranged, a reciprocating displacement driving mechanism and a high-pressure sweeping assembly. The track is arranged on a boiler dry bottom hopper inclined plane; the reciprocating displacement driving mechanism is arranged on the track; the high-pressure cleaning assembly is arranged on the reciprocating displacement driving structure and is used for generating high-pressure air to clean ash of the boiler dry bottom hopper; and the reciprocating displacement driving mechanism is used for driving the high-pressure cleaning assembly to do reciprocating translation along the track so as to realize automatic ash removal of the boiler dry bottom hopper. The device can effectively reach the ash removal position, the ash removal efficiency is improved, the ash removal quality is improved, meanwhile, the labor intensity of personnel is greatly reduced, the working environment of the personnel is improved, and then the characteristics of improving the anti-abrasion and anti-explosion inspection reliability of the dry bottom hopper and reducing the safety risk and economic loss are achieved.

Description

Technical Field

[0001] The disclosed embodiments belong to the technical field of boiler cold ash hopper cleaning, and in particular relate to a boiler cold ash hopper cleaning device. Background Art

[0002] The boiler ash hopper is located at the bottom of the furnace water-cooled wall, usually at an angle of 50° to 55° to the plane.

[0003] The slope of ° forms a bucket-shaped furnace bottom structure, and liquid water flows through the pipes, which is mainly used to cool and collect ash and discharge it in solid form. In thermal power generation systems, most boilers use coal as fuel to heat to produce high-temperature water vapor. After the coal is burned, a large amount of coal ash will be produced. As it cools and deposits, a large amount of ash will fall into the cold ash hopper of the boiler. In the anti-wear and explosion-proof inspection of the boiler, due to its special structural characteristics, the coke on the furnace water-cooled wall and the screen-type superheater may fall from a height of tens of meters during the operation of the boiler, which is easy to cause mechanical damage to the cold ash hopper. At the same time, the cold ash hopper is more prone to wear than other parts of the boiler, and even causes leakage in severe cases, threatening the safe and efficient service of the boiler. In the anti-wear and explosion-proof inspection, the accumulated ash on the cold ash hopper needs to be thoroughly cleaned to expose the original appearance of the pipe, so as to achieve the purpose of detailed inspection and prevention of hidden dangers.

[0004] During the actual inspection process, on the one hand, the cold ash hopper has serious ash accumulation due to the long operation time of the boiler. On the other hand, there is water vapor in the furnace during operation, which mixes with the dry ash after combustion to form "mud-like" ash, which adheres to the cold ash hopper pipe, especially during the shutdown and cooling process. The cleaning work of the cold ash hopper is mainly carried out step by step in different areas with manual handheld cleaning tools. The cleaning process is often dusty, the working environment is harsh, the efficiency is low, the labor intensity is high, and the most important thing is that the cleaning quality is difficult to guarantee, and the original appearance of the pipe cannot be fully exposed. Some pit defects may be buried under the ash, which is very easy to be missed early, burying safety hazards. Severe defects may even cause pipe bursts and leaks during boiler operation, causing significant economic losses. At present, there is little attention to this type of problem, and there is no reliable, efficient, and high-quality device specifically for boiler cold ash hopper cleaning on the market.

[0005] In view of the above problems, it is necessary to propose a boiler cold ash hopper cleaning device that is reasonably designed and effectively solves the above problems. Summary of the invention

[0006] The embodiment of the present disclosure aims to solve at least one of the technical problems existing in the prior art and provide a boiler cold ash hopper cleaning device.

[0007] The embodiment of the present disclosure provides a boiler cold ash hopper cleaning device, comprising two tracks arranged opposite to each other, a reciprocating displacement driving mechanism and a high-pressure cleaning assembly;

[0008] The track is arranged to be arranged on the inclined surface of the boiler cold ash hopper;

[0009] The reciprocating displacement driving mechanism is arranged on the track;

[0010] The high-pressure cleaning assembly is arranged on the reciprocating displacement driving structure, and is used to generate high-pressure air to clean the boiler cold ash hopper;

[0011] The reciprocating translation driving mechanism is used to drive the high-pressure cleaning assembly to reciprocate along the track to automatically clean the boiler cold ash hopper.

[0012] Optionally, the high-pressure cleaning assembly includes a high-pressure air pump, a gas conduit, a high-pressure cleaning gun body and a plurality of high-pressure gas nozzles;

[0013] The first end of the gas conduit is connected to the high-pressure gas pump, and the second end of the gas conduit is connected to the high-pressure cleaning gun body;

[0014] The plurality of high-pressure gas nozzles are arranged at intervals on a side of the high-pressure cleaning gun body facing the boiler cold ash hopper slope, and there is a gap between the high-pressure gas nozzles and the boiler cold ash hopper slope.

[0015] Optionally, the angle range of the high-pressure gas nozzle is 11° to 15°.

[0016] Optionally, the plurality of high-pressure gas nozzles are distributed at equal intervals.

[0017] Optionally, the high-pressure cleaning assembly further includes a connector, two ends of which are respectively connected to the gas conduit and the high-pressure cleaning gun body.

[0018] Optionally, the inner sides of the two rails along their length directions are both provided with sliding grooves;

[0019] The reciprocating displacement driving mechanism comprises a driving motor, a gear rack transmission mechanism and a sliding block;

[0020] The high-pressure cleaning component is arranged on the sliding block;

[0021] The drive motor provides a power source for the rack and pinion transmission mechanism;

[0022] The gear rack transmission mechanism is used to drive the slider to move back and forth along the slide groove.

[0023] Optionally, the rack and pinion transmission mechanism comprises a transmission rack and a gear set, the gear set is arranged on the slider, and the transmission rack is arranged on the corresponding slide groove;

[0024] The gear set is drivingly connected to the output shaft of the driving motor, and the gear set is meshed with the transmission rack.

[0025] Optionally, a first connecting rod and a second connecting rod are arranged opposite to each other at the bottom of the sliding block along its length direction;

[0026] The gear set is disposed at the end of the first connecting rod;

[0027] A roller is disposed at the end of the second connecting rod, and the roller is rollingly disposed in the corresponding sliding groove.

[0028] Optionally, it further comprises a plurality of cross beams, wherein the plurality of cross beams are connected between the two rails at intervals.

[0029] Optionally, the track is provided with a plurality of slots corresponding to the crossbeams, and the corresponding crossbeams are mounted in the slots.

[0030] The boiler cold ash hopper cleaning device of the disclosed embodiment drives the high-pressure cleaning component to reciprocate and translate along the track through the reciprocating displacement driving mechanism to realize automatic cleaning of the boiler cold ash hopper, solving the problems of low labor efficiency, high labor intensity and poor working environment in the traditional cleaning process. By designing a high-pressure cleaning component and using the high-pressure air generated by the high-pressure cleaning component to flush the pipe, the problem of incomplete cleaning in the traditional cleaning process is solved. At the same time, the high-pressure gas can deeply clean the ash and other substances adhering to the pipe wall on the basis of flushing away the floating dust on the surface, exposing the original appearance of the pipe, greatly improving the reliability of subsequent anti-wear and explosion-proof inspections, and reducing the risk of missed inspections of the pipe.

[0031] The boiler cold ash hopper cleaning device of this embodiment has the characteristics of simple operation, high efficiency and high cleaning quality, which greatly reduces the labor intensity of the staff. At the same time, the design of the reset drive mechanism driving the high-pressure cleaning component to reciprocate along the track also avoids the health and safety risks caused by long-term exposure of workers to dust. In the context of anti-wear and explosion-proof inspections in power plants, it has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a boiler cold ash hopper cleaning device according to one embodiment of the present disclosure;

[0033] Figure 2 This is a schematic structural diagram of a high-pressure cleaning assembly according to one embodiment of the present disclosure;

[0034] Figure 3 It is a schematic diagram of the assembly of a slider and a slide groove of an embodiment of the present disclosure;

[0035] Figure 4It is a structural schematic diagram of a boiler cold ash hopper cleaning device placed on the inclined surface of a boiler cold ash hopper in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] like Figure 1 He Ru Figure 4 As shown, an embodiment of the present disclosure provides a boiler cold ash hopper cleaning device 100 , including two rails 110 arranged opposite to each other, a reciprocating displacement driving mechanism 120 and a high-pressure cleaning assembly 130 .

[0038] The track 110 is configured to be disposed on the inclined surface 200 of the boiler cold ash hopper.

[0039] The reciprocating driving mechanism 120 is disposed on the track 110 .

[0040] The high-pressure cleaning assembly 130 is disposed on the reciprocating displacement driving structure 120 and is used to generate high-pressure air to clean the boiler cold ash hopper.

[0041] The reciprocating translation driving mechanism 120 is used to drive the high-pressure cleaning assembly 130 to reciprocate along the track 110 to automatically clean the boiler cold ash hopper.

[0042] Specifically, when the boiler cold ash hopper needs to be cleaned, the track 110 is placed in the area to be cleaned of the boiler cold ash hopper inclined surface 200, the reciprocating displacement driving mechanism 120 is installed on the track 110, the high-pressure cleaning component 130 is installed on the reciprocating displacement driving mechanism 120, the high-pressure cleaning component 130 and the reciprocating displacement driving mechanism 120 are turned on, and the reciprocating displacement driving mechanism 120 drives the high-pressure cleaning component 130 to reciprocate along the track 110, and the high-pressure cleaning component 130 generates high-pressure air to realize automatic cleaning of the boiler cold ash hopper. Among them, the high-pressure cleaning component 130 can reciprocate along the track 110 to perform deep cleaning of the boiler cold ash hopper.

[0043] The boiler cold ash hopper cleaning device of the disclosed embodiment drives the high-pressure cleaning component to reciprocate and translate along the track through the reciprocating displacement driving mechanism to realize automatic cleaning of the boiler cold ash hopper, solving the problems of low labor efficiency, high labor intensity and poor working environment in the traditional cleaning process. By designing a high-pressure cleaning component and using the high-pressure air generated by the high-pressure cleaning component to flush the pipe, the problem of incomplete cleaning in the traditional cleaning process is solved. At the same time, the high-pressure gas can deeply clean the ash and other substances adhering to the pipe wall on the basis of flushing away the floating dust on the surface, exposing the original appearance of the pipe, greatly improving the reliability of subsequent anti-wear and explosion-proof inspections, and reducing the risk of missed inspections of the pipe.

[0044] The boiler cold ash hopper cleaning device of this embodiment has the characteristics of simple operation, high efficiency and high cleaning quality, which greatly reduces the labor intensity of the staff. At the same time, the design of the reset drive mechanism driving the high-pressure cleaning component to reciprocate along the track also avoids the health and safety risks caused by long-term exposure of workers to dust. In the context of anti-wear and explosion-proof inspections in power plants, it has broad application prospects.

[0045] For example, Figure 2 As shown, the high pressure cleaning assembly 130 includes a high pressure gas pump 131, a gas conduit 132, a high pressure cleaning gun body 133 and a plurality of high pressure gas nozzles 134. The end of the high pressure cleaning gun body 133 is disposed on the reciprocating displacement driving mechanism 120.

[0046] A first end of the gas conduit 132 is connected to the high-pressure gas pump 131 , and a second end of the gas conduit 132 is connected to the high-pressure cleaning gun body 133 .

[0047] The plurality of high-pressure gas nozzles 134 are disposed at intervals on a side of the high-pressure cleaning gun body 133 facing the boiler cold ash hopper slope 200 , and have gaps between them and the boiler cold ash hopper slope 200 .

[0048] Specifically, when dust cleaning is required, the high-pressure air pump 131 is turned on, and the high-pressure air is delivered to the high-pressure cleaning gun body 133 through the gas conduit 132, and the high-pressure air is guided out as a cleaning source through the multiple high-pressure gas nozzles 134 on the high-pressure cleaning gun body 133. Driven by the reset drive mechanism 120, the multiple high-pressure gas nozzles 134 can realize reciprocating dust cleaning in different areas.

[0049] Exemplarily, the included angle of the high pressure gas nozzle 134 ranges from 11° to 15°. Preferably, in this embodiment, the included angle of the high pressure gas nozzle 134 is 11°, which can better clean the boiler cold ash hopper slope 200.

[0050] It should be noted that the present embodiment does not impose any specific limitation on the angle of the high-pressure gas nozzle 134 , and the angle may be selected according to actual needs.

[0051] Illustratively, in this embodiment, the plurality of high-pressure gas nozzles 134 are equally spaced, which can achieve a better cleaning effect during the dust cleaning process.

[0052] It should be noted that there is no specific limitation on the number and distribution positions of the high-pressure gas nozzles 134 , and they can be selected according to actual needs.

[0053] For example, Figure 2As shown, the high-pressure cleaning assembly 130 also includes a connector 135, and the two ends of the connector 135 are respectively connected to the gas conduit 132 and the high-pressure cleaning gun body 133. The connector 135 makes it easier and faster to connect and disconnect the gas conduit 132 and the high-pressure cleaning gun body 133. In this embodiment, the connector 135 can be a quick connector for air.

[0054] For example, Figure 3 As shown, the two rails 110 are provided with a slide groove on the inner side along the length direction thereof. In this embodiment, the slide groove of the left rail is a first slide groove 141, and the slide groove of the right rail is a second slide groove 142.

[0055] like Figure 1 As shown, the reciprocating displacement driving mechanism 120 includes a driving motor 121 , a gear rack transmission mechanism and a slider 122 .

[0056] A high-pressure cleaning assembly 130 is disposed on the slider 122. Specifically, in this embodiment, a high-pressure cleaning gun body 133 is mounted and fixed on the slider 122.

[0057] The drive motor 121 provides a power source for the rack and pinion transmission mechanism.

[0058] The gear rack transmission mechanism is used to drive the slider 122 to move back and forth along the slide groove, thereby driving the high-pressure cleaning assembly 130 to move back and forth.

[0059] For example, Figure 3 As shown, the gear rack transmission mechanism includes a transmission rack and a gear set 123, the gear set 123 is arranged on the slider 122, and the transmission rack is arranged in the corresponding slide groove. Specifically, in this embodiment, the gear set 123 is arranged on the left side of the bottom of the slider 122, and the transmission rack is arranged in the first slide groove 141.

[0060] The gear set 123 is drivingly connected to the output shaft of the driving motor 121 , and the gear set 123 is meshed with the transmission rack.

[0061] Specifically, when it is necessary to clean the boiler cold ash hopper inclined surface 200, the drive motor 121 is turned on, and the appropriate moving speed and moving direction are adjusted according to the needs. The drive motor 121 drives the gear set 123 to rotate, and the gear set 123 is meshed with the transmission rack, driving the slider 122 to slide along the first slide groove 141, thereby driving the high-pressure cleaning assembly 130 to perform translational movement. The moving direction of the slider 122 can be controlled by the rotation direction of the drive motor 121. For example, when the drive motor 121 rotates clockwise, the drive motor 121 drives the slider 122 to move upward, and when the drive motor 121 rotates counterclockwise, the drive motor 121 drives the slider 122 to move downward, thereby realizing the reciprocating translational movement of the driving slider 122.

[0062] It should be noted that, in this embodiment, the reciprocating translation drive mechanism 120 is not limited to including a gear rack transmission mechanism, and other reciprocating translation drive mechanisms 120 may also be used, as long as it can drive the high-pressure cleaning assembly 130 to perform reciprocating translational motion, and can be selected according to actual needs.

[0063] For example, Figure 3 As shown, a first connecting rod 151 and a second connecting rod 152 are disposed opposite to each other at the bottom of the sliding block 122 along its length direction.

[0064] A gear set 123 is disposed at the end of the first connecting rod 151 .

[0065] The end of the second connecting rod 152 is provided with a roller 153 , and the roller 153 is rollingly arranged in the corresponding sliding groove. Specifically, the roller 153 is rollingly arranged in the second sliding groove 142 .

[0066] In this embodiment, when the gear set 123 engages with the transmission rack to drive the slider 122 to slide along the first slide groove 141, the roller 153 rolls along the second slide groove 142, which can make the slider 122 slide better and further drive the high-pressure cleaning assembly 130 to reciprocate and translate better.

[0067] For example, Figure 1 As shown, the boiler cold ash hopper cleaning device 100 further includes a plurality of cross beams 160 , which are connected between the two rails 110 at intervals to stabilize the two rails 110 .

[0068] It should be noted that the present embodiment does not limit the number and distribution positions of the cross beams 160, and can be selected according to actual needs. For example, the multiple cross beams 160 can be distributed at equal intervals or at unequal intervals.

[0069] Exemplarily, the track 110 is provided with a plurality of slots corresponding to the cross beams 160, and the slots are provided with the corresponding cross beams 160. The cross beams 160 are provided in the slots of the track 110, so that the installation of the cross beams 160 is more convenient.

[0070] like Figures 1 to 4 As shown, the on-site implementation process of the boiler cold ash hopper cleaning device 100 of the embodiment of the present disclosure can be as follows:

[0071] When cleaning the boiler cold ash hopper, the staff brings the various components of the boiler cold ash hopper cleaning device 100 to the work site.

[0072] A plurality of cross beams 160 are placed in the slots of the two rails 110 to stably fix the two rails 110 .

[0073] The two installed rails 110 are stably placed on the boiler cold ash hopper inclined surface 200. Among them, the main body structure at the bottom of the boiler cold ash hopper inclined surface 200 can limit the rails 110, so that the rails 110 slide off the boiler cold ash hopper inclined surface 200.

[0074] The reciprocating driving mechanism 120 is installed on the track 110. Specifically, the gear set 123 is arranged on the first connecting rod 151 of the slider 122, the roller 153 is arranged on the second connecting rod 152 of the slider 122, and the transmission rack is arranged on the first sliding groove 141 along the length direction of the track 110;

[0075] The staff starts the high-pressure air pump 131, and the high-pressure air is transported to the high-pressure cleaning gun body 133 through the air guide pipe 132, and the high-pressure air is discharged as a cleaning source through the multiple high-pressure gas nozzles 134 on the high-pressure cleaning gun body 133.

[0076] The staff starts the driving motor 121, adjusts the appropriate moving speed according to the needs, and drives the high-pressure cleaning component 130 to move back and forth by the reciprocating driving mechanism 120 to clean the boiler cold ash hopper.

[0077] After cleaning is completed, the boiler cold ash hopper cleaning device 100 is moved to the next working area, and the high-pressure air pump 131 and the drive motor 121 are started in sequence for cleaning.

[0078] After the work is completed, the high-pressure air pump 131 is turned off first, and then the driving motor 121 is turned off. The components of the boiler cold ash hopper cleaning device 100 are disassembled so as to be easily taken away from the workplace.

[0079] The purpose of the present invention is to solve the inconveniences encountered in the existing cold ash hopper cleaning process, and to provide a high-efficiency automatic cleaning device for anti-wear and explosion-proof inspection of power station boiler cold ash hoppers. The device can effectively reach the cleaning position, improve the cleaning efficiency, and improve the cleaning quality. At the same time, it greatly reduces the labor intensity of personnel and improves the working environment of personnel, thereby improving the reliability of anti-wear and explosion-proof inspections of cold ash hoppers and reducing safety risks and economic losses.

[0080] The boiler ash hopper cleaning device of the disclosed embodiment solves the inconveniences encountered in the existing boiler ash hopper cleaning process and provides a high-efficiency automatic cleaning device for anti-wear and explosion-proof inspection of power station boiler ash hoppers. The device can effectively reach the cleaning position, improve the cleaning efficiency, and improve the cleaning quality. At the same time, it greatly reduces the labor intensity of personnel and improves the working environment of personnel, thereby improving the reliability of anti-wear and explosion-proof inspections of ash hoppers and reducing safety risks and economic losses.

[0081] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the embodiments of the present disclosure, but the embodiments of the present disclosure are not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the embodiments of the present disclosure, and these modifications and improvements are also considered to be within the protection scope of the embodiments of the present disclosure.

Claims

1. A boiler cold ash hopper cleaning device, characterized in that: It includes two tracks arranged opposite to each other, a reciprocating driving mechanism and a high-pressure cleaning component; The track is arranged to be arranged on the inclined surface of the boiler cold ash hopper; The reciprocating displacement driving mechanism is arranged on the track; The high-pressure cleaning assembly is arranged on the reciprocating displacement driving structure, and is used to generate high-pressure air to clean the boiler cold ash hopper; The reciprocating translation driving mechanism is used to drive the high-pressure cleaning assembly to reciprocate along the track to automatically clean the boiler cold ash hopper.

2. The device according to claim 1, characterized in that The high-pressure cleaning assembly includes a high-pressure air pump, a gas conduit, a high-pressure cleaning gun body and a plurality of high-pressure gas nozzles; The first end of the gas conduit is connected to the high-pressure gas pump, and the second end of the gas conduit is connected to the high-pressure cleaning gun body; The plurality of high-pressure gas nozzles are arranged at intervals on a side of the high-pressure cleaning gun body facing the boiler cold ash hopper slope, and there is a gap between the high-pressure gas nozzles and the boiler cold ash hopper slope.

3. The device according to claim 2, characterized in that The included angle of the high-pressure gas nozzle is in the range of 11° to 15°.

4. The device according to claim 2, characterized in that The plurality of high-pressure gas nozzles are distributed at equal intervals.

5. The device according to claim 2, characterized in that The high-pressure cleaning assembly also includes a connector, and two ends of the connector are respectively connected to the gas conduit and the high-pressure cleaning gun body.

6. The device according to any one of claims 1 to 5, characterized in that The inner sides of the two rails along their length directions are both provided with sliding grooves; The reciprocating displacement driving mechanism comprises a driving motor, a gear rack transmission mechanism and a sliding block; The high-pressure cleaning component is arranged on the sliding block; The drive motor provides a power source for the rack and pinion transmission mechanism; The gear rack transmission mechanism is used to drive the slider to move back and forth along the slide groove.

7. The device according to claim 6, characterized in that The gear rack transmission mechanism includes a transmission rack and a gear set, the gear set is arranged on the slider, and the transmission rack is arranged on the corresponding slide groove; The gear set is drivingly connected to the output shaft of the driving motor, and the gear set is meshed with the transmission rack.

8. The device according to claim 7, characterized in that The bottom of the sliding block is provided with a first connecting rod and a second connecting rod opposite to each other along the length direction thereof; The gear set is disposed at the end of the first connecting rod; A roller is disposed at the end of the second connecting rod, and the roller is rollingly disposed in the corresponding sliding groove.

9. The device according to any one of claims 1 to 5, characterized in that: It also includes a plurality of cross beams, which are connected between two of the rails at intervals.

10. The device according to claim 9, characterized in that The track is provided with a plurality of slots corresponding to the cross beams, and the corresponding cross beams are clamped in the slots.

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