Ash removal device

Abstract

The utility model relates to the technical field of ash removal structures, and provides an ash removal device which comprises an ash removal air bag and a plurality of ash removal pipes. Each ash removal pipe comprises a first straight pipe and a pipeline elbow which are connected with each other, and the angle of the pipeline elbow is 0-180 degrees; a deashing inlet is formed in the end, away from the pipeline elbow, of the first straight pipe, a deashing outlet is formed in the end, away from the first straight pipe, of the pipeline elbow, and a valve is arranged between the deashing inlet and the deashing outlet; and an air inlet is formed in the ash removal air bag and is connected with the ash removal inlet. The ash removal device is simple in structure; the ash removal pipe can be directly utilized at different angles to conduct ventilation and ash removal on an inlet, an outlet and an internal pipeline of the small heat exchange device, and the ash removal effect on the inlet and the outlet of the small heat exchange device is improved.

Description

Technical Field

[0001] This application relates to the technical field of dust cleaning structures, and particularly to a dust cleaning device. Background Art

[0002] Common heat exchange devices include waste heat boilers, air preheaters, reheaters, etc. Heat exchange tube bundles are arranged in these heat exchange devices. There are certain gaps between these heat exchange tube bundles for flue gas to flow through, which is generally called the shell side. To ensure the stable heat exchange efficiency during the heat exchange process of the heat exchange device, the heat transfer rate of the heat exchange tube bundles must be controlled within a certain range. When dust adheres to the outer surface of the tubes, since the heat transfer efficiency of the dust is different from that of the metal, the heat exchange effect will decrease. At the same time, when the dust adhering to the outer wall of the tubes reaches a certain thickness, it will cause the flow gaps between the tubes to be blocked, the cross-sectional area of the flue gas flow to become smaller, the flow velocity to increase, and the heat exchange time with the medium to be insufficient, and the heat exchange effect will also decrease. In addition, if there is a certain thickness of dust or even a bridging situation on the outer wall of the tubes of the heat exchange device, the resistance of the heat exchange device will increase, which will cause the incinerator to have a positive pressure and pose a great potential safety hazard.

[0003] Therefore, it is necessary to clean the dust of the heat exchange device regularly. The structures of the existing dust cleaning devices are complex, not matched with small heat exchange devices, and cannot flexibly clean the inlets, outlets and interiors of the heat exchange devices, resulting in poor dust cleaning effects. That is, the existing dust cleaning devices have problems of not being matched with small heat exchange devices and poor dust cleaning effects on the inlets, outlets and interiors of small heat exchange devices. Summary of the Utility Model

[0004] In view of the above deficiencies of the prior art, the purpose of this application is to provide a dust cleaning device, aiming to solve the problems that the existing dust cleaning devices are not matched with small heat exchange devices and have poor dust cleaning effects on the inlets, outlets and interiors of small heat exchange devices.

[0005] The technical solution adopted by this application to solve the technical problems is as follows: Provide a dust cleaning device, including a dust cleaning air bag and a plurality of dust cleaning pipes; each of the plurality of dust cleaning pipes includes a first straight pipe and a pipe elbow connected to each other, and the angle of the pipe elbow is 0-180°; a dust cleaning inlet is arranged at one end of the first straight pipe away from the pipe elbow, a dust cleaning outlet is arranged at one end of the pipe elbow away from the first straight pipe, and a valve is arranged between the dust cleaning inlet and the dust cleaning outlet; an air inlet is arranged on the dust cleaning air bag, and the air inlet is connected to the dust cleaning inlet.

[0006] Optionally, the plurality of dust cleaning pipes are two or more, and two or more of the dust cleaning pipes are arranged horizontally and vertically side by side on the dust cleaning air bag; and / or, two or more of the dust cleaning pipes are arranged vertically side by side on the dust cleaning air bag.

[0007] Optionally, when two or more of the soot cleaning pipes are arranged horizontally and vertically side by side on the soot cleaning air bag, a first reinforcing plate is arranged between adjacent soot cleaning pipes, and adjacent soot cleaning pipes are connected to each other through the first reinforcing plate; when two or more of the soot cleaning pipes are arranged vertically side by side on the soot cleaning air bag, a second reinforcing plate is arranged between adjacent soot cleaning pipes, and adjacent soot cleaning pipes are connected to each other through the second reinforcing plate.

[0008] Optionally, the distance between adjacent soot cleaning pipes is 100 - 300 mm.

[0009] Optionally, the soot cleaning device further includes an elastic connector, and the elastic connector is connected to the soot cleaning outlet.

[0010] Optionally, a pipe sleeve is sleeved on the soot cleaning pipe, and the thickness of the pipe sleeve is 0.1 - 20 mm.

[0011] Optionally, a gas bag drain port is arranged at the bottom of the soot cleaning air bag.

[0012] Optionally, the soot cleaning device further includes an air supply pipe, and the air supply pipe is connected to the soot cleaning air bag for supplying air to the soot cleaning air bag.

[0013] Optionally, a plurality of the soot cleaning pipes further include a second straight pipe, the second straight pipe is arranged between the pipe elbow and the soot cleaning outlet, and the pipe elbow is connected to the soot cleaning outlet through the second straight pipe.

[0014] Optionally, the angle of the pipe elbow is 95 - 180°.

[0015] Compared with the prior art, the present application provides a soot cleaning device. The soot cleaning air bag can be connected to an external gas source device, such as a compressed air generating device or a compressed air storage device. The external gas source device supplies air to the soot cleaning pipes through the soot cleaning air bag. The soot cleaning air bag can stabilize the compressed air pressure and improve the stability of the compressed gas pressure; a valve is also arranged on the soot cleaning pipe to control the opening and closing of the gas, and the structure is simple; and the soot cleaning pipe includes a pipe elbow, and the angle of the pipe elbow can be adjusted, so that the inlet and outlet of a small heat exchange device can be directly ventilated and soot cleaned by the soot cleaning pipe at different angles, improving the soot cleaning effect on the inlet and outlet of the small heat exchange device; at the same time, the soot cleaning pipe can be directly connected to the small heat exchange device, thereby improving the soot cleaning effect on the internal pipes of the heat exchange device. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the soot cleaning device provided in the present application;

[0017] Figure 2 is a schematic diagram of an embodiment of the soot cleaning device provided in the present application;

[0018] Figure 3 It is a schematic diagram of another implementation manner of the dust cleaning device provided in this application;

[0019] Figure 4 It is a schematic diagram of another implementation manner of the dust cleaning device provided in this application.

[0020] Description of the reference numerals:

[0021] 1. Dust cleaning pipe; 11. Dust cleaning outlet; 12. Pipe elbow; 13. Pipe sleeve; 14. Valve; 15. First reinforcing plate; 16. Second reinforcing plate; 17. First straight pipe; 2. Dust cleaning air bag; 21. Air bag sewage outlet; 3. Air supply pipe; 31. On-off valve. Specific implementation manner

[0022] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] With reference to Figure 1In the first embodiment of the present application, a cleaning device is provided, including a cleaning air bag 2 and a plurality of cleaning pipes 1; the plurality of cleaning pipes 1 each include a first straight pipe 17 and a pipe elbow 12 connected to each other, and the angle of the pipe elbow 12 is 0-180°; a cleaning inlet is provided at one end of the first straight pipe 17 away from the pipe elbow 12, and a cleaning outlet 11 is provided at one end of the pipe elbow 12 away from the first straight pipe 17, and a valve 14 is provided between the cleaning inlet and the cleaning outlet 11; an air inlet is provided on the cleaning air bag 2, and the air inlet is connected to the cleaning inlet.

[0026] The cleaning device of this embodiment can be used to clean the heat exchange device; the specific cleaning process is: the cleaning outlet 11 of the cleaning pipe 1 is aligned with the inlet and outlet of the heat exchange device to be cleaned, or the cleaning outlet 11 of the cleaning pipe 1 is directly connected to the pipeline to be cleaned inside the heat exchange device; the valve 14 on the cleaning pipe 1 is opened, and gas is supplied to the cleaning pipe 1 through the cleaning air bag 2. The gas enters the cleaning pipe 1 from the cleaning air bag 2, and leads to the inlet and outlet of the heat exchange device or the pipeline to be cleaned of the heat exchange device, so as to flush away or flush out the dust therein, thereby playing a cleaning role.

[0027] A cleaning device of the present embodiment, the cleaning air bag 2 can be connected to an external air source device, such as a compressed air generating device or a compressed air storage device, the external air source device supplies air to the cleaning pipe 1 through the cleaning air bag 2, the cleaning air bag 2 can stabilize the compressed air pressure, and improve the stability of the compressed gas pressure; the cleaning pipe 1 is also provided with a valve 14 to control the opening and closing of the gas, and the structure is simple; and the cleaning pipe 1 includes a pipe elbow 12, the angle of the pipe elbow 12 can be adjusted, so that the cleaning pipe 1 can be directly used from different angles to ventilate and clean the inlet and outlet of the small heat exchange device, thereby improving the cleaning effect of the inlet and outlet of the small heat exchange device; at the same time, the cleaning pipe 1 can be directly connected to the small heat exchange device, thereby improving the cleaning effect inside the heat exchange device.

[0028] The valve 14 can be arranged at the air inlet of the cleaning air bag 2, so as to control the gas introduction and the gas introduction amount in the cleaning air bag 2 through the valve 14. Specifically, the gas supply to a plurality of cleaning pipes 1 can be directly controlled through the valve 14 arranged on the cleaning air bag 2; or an independent valve 14 can be arranged on each cleaning pipe 1, that is, a valve 14 is arranged between the cleaning inlet and the cleaning outlet 11, so as to realize the gas supply effect of a single pipe and a single control, and the heat exchange device can be ventilated and cleaned through a specific cleaning pipe 1 in a targeted manner.

[0029] In some embodiments, a blowdown opening 21 is provided on the dust cleaning air receiver 2. The blowdown opening 21 is located at the bottom of the dust cleaning air receiver 2, and a blowdown pipeline of the air receiver can also be connected to the blowdown opening 21. A valve 14 for controlling its opening and closing can be provided on the blowdown pipeline of the air receiver. The blowdown opening 21 is used to discharge stains, dust, etc. on the dust cleaning air receiver 2 to clean the dust cleaning air receiver 2.

[0030] The cross-sectional shape of the cleaning outlet 11 of the cleaning pipe 1 can be circular, oval, square, triangular, polygonal or other shapes; at the same time, the cross-sectional area of the cleaning outlet 11 can decrease or increase along the direction away from the pipe elbow 12. When the cross-sectional area of the cleaning outlet 11 decreases along the direction away from the pipe elbow 12, the cleaning outlet 11 is a tapered opening; when the cross-sectional area of the cleaning outlet 11 increases along the direction away from the pipe elbow 12, the cleaning outlet 11 is a flared opening. In order to enhance the stamping effect of the cleaning outlet 11 of the cleaning pipe 1, the cleaning outlet 11 is preferably set as a tapered opening. And, a nozzle can be additionally installed at the cleaning opening to further improve the stamping effect of the cleaning outlet 11, increase the gas pressure passing out from the cleaning outlet 11, and thus improve the cleaning effect.

[0031] With reference to Figure 1 , in some embodiments, each of the plurality of cleaning pipes 1 further includes a second straight pipe, the second straight pipe is arranged between the pipe elbow 12 and the cleaning outlet 11, and the pipe elbow 12 is connected to the cleaning outlet 11 through the second straight pipe; the arrangement of the second straight pipe extends the distance between the cleaning outlet 11 and the pipe elbow 12, extends the pipeline path length of the cleaning pipe 1, and facilitates inserting the cleaning outlet 11 into the heat exchange device to conduct air cleaning on the heat exchange pipeline.

[0032] The angle of the pipe elbow 12 is preferably 95 - 180°, and the setting of the obtuse angle can reduce the resistance encountered by the gas when passing through the pipe elbow 12, so as to facilitate the gas to pass through, and further improve the cleaning effect of the cleaning device.

[0033] A plurality of cleaning pipes 1 can be arranged in a ring on the dust cleaning air receiver 2, or can be arranged in a regular shape on the dust cleaning air receiver 2, and the regular shape can be circular, square, triangular, etc.; the number of cleaning pipes 1 can be set as required. Specifically, it can be the same as the number of pipes to be cleaned in the heat exchange device. An independent valve 14 can be provided on each cleaning pipe 1, and the valve 14 can be a manual valve 14, an electric valve 14 or a pneumatic valve 14, etc. When set as an electric valve 14 or a pneumatic valve 14, a cleaning program can be compiled to control the opening, opening duration, etc. of the valve 14.

[0034] The size of the dust cleaning air receiver 2 is adjusted according to the cleaning requirements, and the dust cleaning air receiver 2 can be set as a cylinder, a sphere, a cube or other shapes.

[0035] With reference toFigure 2 , Figure 3 and Figure 4 , in some embodiments, there are two or more cleaning pipes 1, and the two or more cleaning pipes 1 are arranged horizontally side by side on the cleaning air bag 2; and / or, the two or more cleaning pipes 1 are arranged vertically side by side on the cleaning air bag 2.

[0036] Moreover, in some embodiments, a first reinforcing plate 15 is arranged between adjacent cleaning pipes 1 arranged horizontally side by side and they are connected to each other through the first reinforcing plate 15; and / or, a second reinforcing plate 16 is arranged between adjacent cleaning pipes 1 arranged vertically side by side and they are connected to each other through the second reinforcing plate 16. By means of the first reinforcing plate 15 and the second reinforcing plate 16, the connection relationship between the cleaning pipes 1 is strengthened, the structural stability between the cleaning pipes 1 is improved, and the shaking of the cleaning pipes 1 and the overlapping and collision between the cleaning pipes 1 are prevented.

[0037] In order to further prevent the decrease in cleaning efficiency caused by the overlapping and collision of the cleaning pipes 1, in some embodiments, the distance between adjacent cleaning pipes 1 is preferably 100 - 300 mm.

[0038] In some embodiments, the cleaning device further includes an elastic connecting piece, and the elastic connecting piece is connected to the cleaning outlet 11 of the cleaning pipe 1. Specifically, the elastic connecting piece can be sleeved on the connection part between the cleaning outlet 11 and the heat exchange device to be cleaned, used for sealing the connection between the cleaning outlet 11 and the heat exchange device to be cleaned, preventing gas from overflowing, and improving the cleaning effect; the elastic connecting piece can be selected as a sealing ring.

[0039] In order to further improve the connection stability and sealing performance between the cleaning outlet 11 and the heat exchange device to be cleaned, a tie strap can also be sleeved outside the elastic connecting piece, and the elastic connecting piece is tightened by shrinking the tie strap, so that the elastic connecting piece is closely attached to and sealed with the heat exchange device to be cleaned.

[0040] In some embodiments, a pipe sleeve 13 is sleeved on the cleaning pipe 1. The pipe sleeve 13 is used to protect the cleaning pipe 1 and reduce the corrosion and deformation of the cleaning pipe 1. The pipe sleeve 13 can also be fixed on the cleaning pipe 1 by welding. Specifically, the pipe sleeve 13 can be arranged on the first straight pipe 17, the pipe elbow 12 and the second straight pipe.

[0041] The cleaning air bag 2 can not only provide gas with a certain pressure for the cleaning pipe 1, but also provide steam with a certain temperature, so as to better use the cleaning pipe 1 to clean the heat exchange device. Therefore, the pipe sleeve 13 can also be used to ensure the steam temperature in the cleaning pipe 1. The pressure of the gas with a certain pressure can be preferably 0.5 - 1.5 MPa; the temperature of the steam with a certain temperature can be preferably 120 - 150 °C.

[0042] In some embodiments, the thickness of the sleeve 13 is 0.1 - 20 mm, which can better protect the soot cleaning pipe 1, prevent the soot cleaning pipe 1 from being corroded and deformed, and ensure the steam temperature inside the soot cleaning pipe 1. Further, the thickness of the sleeve 13 is preferably 1 - 10 mm.

[0043] The soot cleaning device may further include a gas supply pipe 3, which is connected to the soot cleaning air bag 2 to supply gas to the soot cleaning air bag 2 and connect the soot cleaning air bag 2 to an external gas source device. The external gas source device can be selected as a compressed air generating device, a compressed air storage device, etc.

[0044] In order to controllably adjust the gas content in the soot cleaning air bag 2, in some embodiments, a switching valve 31 is provided on the gas supply pipe 3. At the same time, a thermometer may also be provided on the gas supply pipe 3 to detect the temperature of the gas introduced into the soot cleaning air bag 2; and a thermometer may also be provided on the soot cleaning air bag 2 to detect the temperature of the gas inside the soot cleaning air bag 2.

[0045] The soot cleaning device may further include a controller, and valves 14, switching valve 31, thermometer, etc. can be connected to the controller, so as to intuitively understand the conditions of valves 14, switching valve 31, thermometer, etc. through the controller, and at the same time controllably adjust valves 14, switching valve 31, thermometer, etc.

[0046] In summary, a soot cleaning device is provided in the present application. The soot cleaning air bag can be connected to an external gas source device, such as a compressed air generating device or a compressed air storage device. The external gas source device supplies gas to the soot cleaning pipe through the soot cleaning air bag. The soot cleaning air bag can stabilize the compressed air pressure and improve the stability of the compressed gas pressure; a valve is also provided on the soot cleaning pipe to control the opening and closing of the gas, and the structure is simple; and the soot cleaning pipe includes a pipe elbow, and the angle of the pipe elbow can be adjusted, so as to directly ventilate and clean the inlets and outlets of the small heat exchange device from different angles, improving the soot cleaning effect on the inlets and outlets of the small heat exchange device; at the same time, the soot cleaning pipe can be directly connected to the small heat exchange device, thereby improving the soot cleaning effect on the internal pipes of the heat exchange device.

[0047] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the examples of the present application.

Claims

1. A dust cleaning device, characterized in that, It includes a cleaning air bag and several cleaning pipes; the several cleaning pipes each include a first straight pipe and a pipe elbow connected to each other, and the angle of the pipe elbow is 0-180°; a cleaning inlet is provided at one end of the first straight pipe away from the pipe elbow, and a cleaning outlet is provided at one end of the pipe elbow away from the first straight pipe, and a valve is provided between the cleaning inlet and the cleaning outlet; an air inlet is provided on the cleaning air bag, and the air inlet is connected to the cleaning inlet.

2. The dust cleaning device according to claim 1, characterized in that, The number of the cleaning pipes is two or more, and the two or more cleaning pipes are arranged in parallel in the horizontal and vertical directions on the cleaning air bag; and / or, Two or more of the dust cleaning pipes are vertically arranged in parallel on the dust cleaning air bag.

3. The dust cleaning device according to claim 2, characterized in that: When two or more ash cleaning pipes are arranged horizontally and vertically in parallel on the ash cleaning air bag, a first reinforcing plate is arranged between adjacent ash cleaning pipes, and adjacent ash cleaning pipes are connected to each other through the first reinforcing plate; When two or more of the cleaning pipes are vertically arranged in parallel on the cleaning air bag, a second reinforcing plate is arranged between adjacent cleaning pipes, and adjacent cleaning pipes are connected to each other through the second reinforcing plate.

4. The dust cleaning device according to claim 2, characterized in that, The distance between adjacent cleaning pipes is 100-300 mm.

5. The dust cleaning device according to claim 1, characterized in that The dust cleaning device further comprises an elastic connecting member, and the elastic connecting member is connected to the dust cleaning outlet.

6. The dust cleaning device according to claim 1, characterized in that The dust cleaning pipe is sleeved with a pipe sleeve, and the thickness of the pipe sleeve is 0.1-20mm.

7. The dust cleaning device according to claim 1, characterized in that, The bottom of the dust cleaning air bag is provided with an air bag sewage outlet.

8. The dust cleaning device according to claim 1, characterized in that, The dust cleaning device also includes an air supply pipe, which is connected to the dust cleaning air bag and is used to supply air to the dust cleaning air bag.

9. The dust cleaning device according to claim 1, characterized in that Several of the ash cleaning pipes also include a second straight pipe, which is arranged between the pipe elbow and the ash cleaning outlet, and the pipe elbow is connected to the ash cleaning outlet through the second straight pipe.

10. The dust cleaning device according to claim 1, characterized in that, The angle of the pipeline elbow is 95-180°.

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