Soot blowing and spraying equipment

Abstract

The utility model relates to soot blowing and spraying equipment, which is used for cleaning soot in a preset cleaning area of equipment to be cleaned and comprises a base, a soot blowing and spraying device and a driving device, the driving device is mounted on the base, and the power output end of the driving device is connected with the soot blowing and spraying device so as to drive a spraying part of the soot blowing and spraying device to extend into or move out of the preset cleaning area; the spraying part is provided with a plurality of air supply ends facing different positions of the preset cleaning area, the soot blowing and spraying device further comprises a rotation driving part which is connected with the spraying part through a connecting pipe to drive the spraying part to rotate so as to change the air supply direction of the air supply ends, and the soot blowing and spraying device has the advantage of improving the soot cleaning effect.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment of power plants, in particular to a soot blowing spray device. Background Art

[0002] Boilers are a common energy conversion equipment in power plants. The energy input to the boiler during use includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy for industrial production. However, during the operation of the boiler, due to incomplete combustion of the fuel and the deposition of dust, a thick layer of ash will form on the heating surface of the boiler, which will affect the thermal efficiency and service life of the boiler. Therefore, it is essential to clean the boiler regularly.

[0003] For example, the patent with publication number CN214619633U discloses a spray device for soot blowing of a boiler in a power plant, and specifically discloses that it includes an outer shell, a water tank is fixedly installed inside the outer shell, an air pressure tank is fixedly installed inside the outer shell, an air intake pipe is fixedly connected to the left side of the air pressure tank, the air intake pipe extends to the left to the outside of the left side of the outer shell, an exhaust pipe is fixedly connected to the right side of the air pressure tank, the exhaust pipe extends to the right to the outside of the right side of the outer shell, a connecting pipe is fixedly connected to the lower part of the water tank, the connecting pipe extends to the right to the outside of the right side of the outer shell, a nozzle is fixedly connected to the end of the right side of the connecting pipe away from the water tank, an installation frame is fixedly connected to the front side of the outer shell, a glass plate is fixedly installed inside the installation frame, a scale is provided on the surface of the glass plate, and then through the regular movement of the piston, intermittent strong wind is generated, the soot blowing force is stronger, and dust removal is convenient for stubborn stains. However, since the heating surface of the boiler is large and not a regular plane, when a single nozzle or exhaust pipe is used to blow soot on the boiler, its spraying range is greatly limited, and there are many spray dead angles, which reduces the soot blowing effect of the boiler.

[0004] Therefore, it is urgent for those skilled in the art to provide a soot-blowing spray device that can perform large-scale soot-blowing to reduce spray dead angles. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a soot blowing spray device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A soot-blowing spray device is used to clean a preset cleaning area of ​​a device to be cleaned, comprising: a base, a soot-blowing spray device and a driving device; the driving device is installed on the base, and its power output end is connected to the soot-blowing spray device to drive the spray part of the soot-blowing spray device to extend into or move out of the preset cleaning area; the spray part has a plurality of air supply ends facing different positions of the preset cleaning area, and the soot-blowing spray device also includes a rotating driving part connected to the spray part through a connecting pipe to drive the spray part to rotate so as to change the air supply direction of the air supply end.

[0008] Preferably, the spray portion includes a main spray pipe and a plurality of first branch spray pipes extending radially along the main spray pipe; the plurality of first branch spray pipes are all connected to the main spray pipe and are distributed in a spiral around the main spray pipe.

[0009] Preferably, the spray section further comprises a plurality of second branch spray pipes connected to the main spray pipe; the second branch spray pipes are distributed in a ring shape at both ends of the main spray pipe; the second branch spray pipes are inclined at a preset angle in a direction away from the first branch spray pipe.

[0010] Preferably, the rotary drive unit is fixedly mounted on the drive device; the rotary drive unit comprises a motor, a driving wheel driven by the motor, and a driven wheel meshing with the driving wheel; the driven wheel is fixedly connected to the main spray pipe through the connecting pipe to drive the main spray pipe to rotate.

[0011] Preferably, the rotary drive unit further comprises a protective box for mounting the driving wheel and the driven wheel.

[0012] Preferably, the sootblowing spray device further comprises a pump; an air inlet end of the pump is connected to an air source, and an air outlet end of the pump is connected to the connecting pipe via a sealing joint.

[0013] Preferably, it further comprises a sealing device, which is sleeved on the connecting pipe and enables the connecting position of the connecting pipe and the equipment to be cleaned to form a sealed connection when the spray part extends into the preset cleaning area.

[0014] Preferably, the sealing device comprises a gasket and a sealing plate; the gasket is located on a side of the sealing plate close to the device to be cleaned, so that the sealing plate pushes the gasket against the device to be cleaned.

[0015] Preferably, the driving device comprises an electric slide rail and a support seat slidably mounted on the electric slide rail; the sootblowing spray device is mounted on the support seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] A soot-blowing spray device provided in the above technical solution is connected to the soot-blowing spray device through the power output end of the driving device, so that when the equipment to be cleaned needs to be cleaned, the driving device is used to drive the spray part of the soot-blowing spray device to extend into the preset cleaning area of ​​the equipment to be cleaned for cleaning; when cleaning is not required, the driving device can be used to drive the spray part of the soot-blowing spray device to move out of the preset cleaning area, thereby not affecting the normal use of the equipment to be cleaned, and the device can be used to clean a variety of equipment, thereby increasing the utilization rate of the soot-blowing spray device and avoiding its idleness; by driving the spray part to rotate by the rotating driving part to change the air supply direction of the air supply end, the dust in the preset cleaning area can be subjected to forces in different directions, which facilitates the dust to be separated from the equipment to be cleaned and improves the soot-blowing effect of the spray part; in addition, under the action of the rotating inertial force, the spray part can also increase the range and intensity of the spray, thereby further improving the soot-blowing effect of the spray part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic structural diagram of one implementation mode of the utility model.

[0020] Figure 2 for Figure 1 Enlarged view of position A in the middle.

[0021] Figure 3 for Figure 1 Schematic diagram of the structure where the middle spray part extends into the boiler (partial cutaway).

[0022] Figure 4 for Figure 3 Schematic diagram of the connection between the middle spray section and the connecting pipe.

[0023] Figure 5 for Figure 4 Schematic diagram of the structure from another perspective.

[0024] Figure 6 for Figure 5 Enlarged view of position B in the middle.

[0025] Figure 7 for Figure 1 Schematic diagram of the structure of the rotating drive unit (partial cutaway).

[0026] Description of reference numerals:

[0027] 1. Base; 2. Sootblowing spray device; 21. Spraying part; 211. Main spray pipe; 212. First branch spray pipe; 213. Second branch spray pipe; 22. Connecting pipe; 23. Rotating drive part; 231. Motor; 232. Driving wheel; 233. Driven wheel; 234. Protective box; 24. Pump; 25. Sealing joint; 3. Driving device; 31. Electric slide rail; 32. Support seat; 4. Sealing device; 41. Gasket; 42. Sealing plate; 100. Boiler; 1000. Boiler heating surface; 10001. First end face; 10002. Second end face. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See also Figures 1 to 7The embodiment of the utility model provides a soot-blowing spray device for cleaning a preset cleaning area of ​​a device to be cleaned, comprising: a base 1, a soot-blowing spray device 2, and a driving device 3. The device to be cleaned may be a boiler, a curved pipe, or other structures. For ease of description, the boiler 100 is taken as an example for further description in this embodiment. The preset cleaning area is the boiler cavity and the boiler heating surface 1000. The boiler heating surface 1000 comprises a first end face 10001 arranged opposite to each other and a second end face 10002 connecting the two first end faces 10001. The first end face 10001 and the second end face 10002 may be set to be a plane or a curved surface.

[0032] See also Figures 1 to 3 The driving device 3 is installed on the base 1, and its power output end is connected to the sootblowing spray device 2. When the boiler 100 needs to be cleaned, the driving device 3 is used to drive the spray part 21 of the sootblowing spray device 2 to extend into the boiler 100 and clean the boiler heating surface 1000. When cleaning is not required, the driving device 3 can be used to drive the spray part 21 of the sootblowing spray device 2 to move out of the boiler 100, which will not affect the normal use of the boiler 100, and the sootblowing spray device provided by the utility model can clean multiple devices in succession, increase the utilization rate of the sootblowing spray device, and avoid its idleness.

[0033] Further, the spray part 21 has a plurality of air supply ends facing different positions of the preset cleaning area (such as different positions of the boiler heating surface 100), and the soot blowing spray device 2 also includes a rotating drive part 23 connected to the spray part 21 through a connecting pipe 22 to drive the spray part 21 to rotate to change the air supply direction of the air supply end. In this embodiment, when the spray part 21 extends into the preset cleaning area, the connecting pipe 22 and the spray part 21 can be driven to rotate by the rotating drive part 23, so that the spray part 21 can change the air supply direction of the air supply end during the rotation process, so that the dust on the boiler heating surface 1000 is subjected to forces in different directions, which facilitates the dust to be separated from the boiler 100, and improves the soot blowing effect of the spray part 21 on the boiler 100. In addition, under the action of the inertial force of rotation, the spray part 21 can also increase the range and strength of the spray, further improving the soot blowing effect of the spray part 21 on the boiler 100. It is worth noting that the "air supply end" referred to here is the spray outlet of the spray part 21.

[0034] Since the boiler heating surface 1000 generally includes a first end surface 10001 arranged opposite to each other and a second end surface 10002 connecting the two first end surfaces 10001, rather than a full plane, in order to increase the soot blowing area of ​​the boiler heating surface 1000 by the spray part 21, the soot blowing effect of the spray part 21 on the boiler 100 is increased. Figures 1 to 4In this embodiment, the spray section 21 includes a main spray pipe 211 and a plurality of first branch spray pipes 212 extending radially along the main spray pipe 211; the plurality of first branch spray pipes 212 are all connected to the main spray pipe 211, the air supply end (i.e., the spray outlet) of the first branch spray pipe 212 faces the first end surface 10001, and the first branch spray pipes 212 are spirally distributed around the main spray pipe 211, so that the mist sprayed by the first branch spray pipes 212 can cover the entire first end surface 10001.

[0035] Further, see Figure 5 and Figure 6 The spray section 21 also includes a plurality of second branch spray pipes 213 connected to the main spray pipe 211; the second branch spray pipes 213 are distributed in a ring shape at both ends of the main spray pipe 211; the second branch spray pipes 213 are inclined at a preset angle away from the first branch spray pipe 212, so that the air supply end (i.e., the spray outlet) of the second branch spray pipe 213 faces the second end face 10002, so that the second end face 10002 can be blown away in a targeted manner to avoid the formation of a dead angle for blowing away. Figure 6 The preset angle is an angle J between the central axis L1 of the main spray pipe 211 and the central axis L2 of the second branch spray pipe 213 , and the angle J can be set to 10°, 45° or 80°.

[0036] Furthermore, both ends of the main spray pipe 211 may form a tapered block whose diameter gradually decreases from the center to both ends, and the second branch spray pipe 213 is installed on the tapered block.

[0037] It is worth noting that the preset angles between different second branch spray pipes 213 and the main spray pipe 211 can all be kept consistent, or the preset angles between different second branch spray pipes 213 and the main spray pipe 211 can be all equal or partially equal. The specific setting can be made according to actual usage requirements. For example, it can be made according to factors such as the area size of the second end face 10002 of the boiler 100 and the flatness of the second end face 10002, so that the mist sprayed from the second branch spray pipe 213 can cover the entire second end face 10002.

[0038] See also Figure 1 , Figure 2 and Figure 7 In this embodiment, the driving device 3 includes an electric slide rail 31 and a support base 32 slidably mounted on the electric slide rail 31 ; the sootblowing spray device 2 is integrally mounted on the support base 32 .

[0039] Specifically, the rotary drive unit 23 includes a motor 231, a driving wheel 232 and a driven wheel 233. The motor 231 is fixedly mounted on the support seat 32. The driving shaft of the motor 231 is connected to the driving wheel 232, thereby driving the driving wheel 232 to rotate. The driven wheel 233 is meshed with the driving wheel 232 for transmission, and the driven wheel 233 is fixedly mounted on the connecting pipe 22. The connecting pipe 22 is fixedly connected to the main spray pipe 211, thereby driving the main spray pipe 211 to rotate. It is worth noting that the connecting pipe 22 and the main spray pipe 211 can be fixedly connected by welding, sealing structure sealing connection or integral molding.

[0040] Furthermore, in order to prevent foreign objects from getting stuck between the driving wheel 232 and the driven wheel 233 and affecting their operation, in the present embodiment, the rotary drive unit 23 also includes a protective box 234 for mounting the driving wheel 232 and the driven wheel 233, and in order to facilitate the maintenance of the driving wheel 232 and the driven wheel 233, at least one side of the protective box 234 is removable or provided with a maintenance port (e.g., a lubrication port for dripping lubricating oil).

[0041] See also Figure 1 and Figure 2 In order not to affect the rotation of the connecting pipe 22 and the main spray pipe 211 and the mist supply, and to avoid leakage during the mist supply, in this embodiment, the sootblowing spray device 2 further includes a pump 24; the air inlet end of the pump 24 is connected to the air source, and the air outlet end of the pump 24 is connected to the connecting pipe 22 through a sealing joint 25. Of course, in other embodiments, the connecting pipe 22 can also be directly connected to the air source (such as an air supply box) for rotational cooperation.

[0042] Furthermore, it also includes a sealing device 4, which is sleeved on the connecting pipe 22, and when the spray part 21 extends into the preset cleaning area 1000, the connecting position of the connecting pipe 22 and the equipment to be cleaned forms a sealed connection.

[0043] Specifically, the sealing device 4 includes a gasket 41 and a sealing plate 42; the gasket 41 is located on the side of the sealing plate 42 close to the boiler 100, so that the sealing plate 42 pushes the gasket 41 against the boiler 100. The gasket 41 can be set as a flexible rubber pad, and the sealing plate 42 can be set as a rigid pressure plate.

[0044] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A soot-blowing spray device, used for cleaning a preset cleaning area of ​​a device to be cleaned, characterized in that: include: A base (1), a soot-blowing spray device (2) and a driving device (3); The driving device (3) is installed on the base (1), and its power output end is connected to the soot blowing spray device (2) to drive the spray part (21) of the soot blowing spray device (2) to extend into or move out of the preset cleaning area; The spray part (21) has a plurality of air supply ends facing different positions of the preset cleaning area, and the soot blowing spray device (2) also includes a rotation driving part (23) connected to the spray part (21) via a connecting pipe (22) to drive the spray part (21) to rotate so as to change the air supply direction of the air supply end.

2. A sootblowing spray device according to claim 1, characterized in that: The spray portion (21) comprises a main spray pipe (211) and a plurality of first branch spray pipes (212) extending radially along the main spray pipe (211); The plurality of first branch spray pipes (212) are all connected to the main spray pipe (211) and are distributed in a spiral around the main spray pipe (211).

3. A sootblowing spray device according to claim 2, characterized in that: The spray section (21) further comprises a plurality of second branch spray pipes (213) connected to the main spray pipe (211); The second branch spray pipes (213) are distributed in a ring shape at both ends of the main spray pipe (211); The second branch spray pipe (213) is inclined at a preset angle in a direction away from the first branch spray pipe (212).

4. A sootblowing spray device according to claim 2, characterized in that: The rotary drive unit (23) is fixedly mounted on the drive device (3); The rotary drive unit (23) comprises a motor (231), a driving wheel (232) driven by the motor (231), and a driven wheel (233) meshing with the driving wheel (232); The driven wheel (233) is fixedly connected to the main spray pipe (211) via the connecting pipe (22) to drive the main spray pipe (211) to rotate.

5. A sootblowing spray device according to claim 4, characterized in that: The rotary drive unit (23) further comprises a protective box (234) for mounting the driving wheel (232) and the driven wheel (233).

6. A sootblowing spray device according to claim 2, characterized in that: The sootblowing spray device (2) further comprises a pump (24); The air inlet end of the pump (24) is connected to an air source, and the air outlet end of the pump (24) is connected to the connecting pipe (22) via a sealing joint (25).

7. A sootblowing spray device according to any one of claims 1 to 6, characterized in that: It also comprises a sealing device (4), wherein the sealing device (4) is sleeved on the connecting pipe (22) and forms a sealed connection between the connecting pipe (22) and the connecting position of the equipment to be cleaned when the spray portion (21) extends into the preset cleaning area.

8. A sootblowing spray device according to claim 7, characterized in that: The sealing device (4) comprises a gasket (41) and a sealing plate (42); The gasket (41) is located on a side of the sealing plate (42) close to the device to be cleaned, so that the sealing plate (42) pushes the gasket (41) to press against the device to be cleaned.

9. The sootblowing spray equipment according to claim 1, characterized in that: The driving device (3) comprises an electric slide rail (31) and a support seat (32) slidably mounted on the electric slide rail (31); The soot blowing spray device (2) is installed on the support seat (32).

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