Anti-blocking rake pipe of rake type soot blower

Abstract

The invention discloses an anti-blocking rake type soot blower rake pipe which comprises an air inlet pipe, a blowing rake pipe and a plurality of nozzles, the air inlet pipe is communicated with the blowing rake pipe, the nozzles are arranged at the lower end of the blowing rake pipe, nozzle pipe bodies with closed upper ends are arranged at the input ends of the nozzles, nozzle flow guide groove holes are formed in one sides of the nozzle pipe bodies, and the nozzle flow guide groove holes are communicated with the blowing rake pipe. Compared with the prior art, the soot blower has the advantages that the performance of the soot blower can be greatly improved, and long-term stable operation of a system is facilitated.

Description

[Technical field]

[0001] The invention relates to supporting equipment in the technical field of air pollution control, in particular to a rake pipe of an anti-clogging rake-type soot blower. [Background technology]

[0002] Rake soot blowers are widely used in environmental protection mechanical engineering, mainly for blowing the heat exchange surface of boilers and the catalyst surface of environmental protection equipment. Superheated steam or compressed air is generally used as the blowing medium to remove the accumulated dust on the surface to be blown, thereby improving the thermal efficiency of the heat exchange surface and the catalytic activity of the catalyst, and avoiding catalyst blockage, poisoning and corrosion, etc. The performance of the soot blower plays a decisive role in the operation of the system.

[0003] However, in actual use, the blowing effect of the soot blower is often greatly reduced due to the blockage of the nozzle. Especially in the SCR denitrification in the cement industry, once the nozzle is blocked, it will cause large-area dust accumulation on the catalyst, causing the catalyst layer differential pressure to rise, the system energy consumption to increase, and the catalyst performance to decline or even fail.

[0004] In order to further realize the efficient blowing of rake sootblower, an anti-clogging rake pipe of rake sootblower is proposed. [Summary of the invention]

[0005] The purpose of the present invention is to solve the problems in the prior art and to provide an anti-clogging rake pipe of a rake-type sootblower, which can solve at least one of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention proposes an anti-clogging rake pipe of a rake-type sootblower, comprising an air inlet pipe, a blowing rake pipe and a plurality of nozzles, wherein the air inlet pipe is connected to the blowing rake pipe, a nozzle is arranged at the lower end of the blowing rake pipe, the input end of the nozzle is provided with a nozzle tube body with a closed upper end, a nozzle guide groove hole is arranged on one side of the nozzle tube body, the width of the nozzle guide groove hole is smaller than the diameter of the nozzle throat of the nozzle, and the area of ​​the nozzle guide groove hole is larger than the cross-sectional area of ​​the nozzle throat.

[0007] Preferably, the spray rake pipe comprises a main pipe body, both ends of the main pipe body are provided with main pipe plugs, and the air inlet pipe is connected to the middle position of the main pipe body.

[0008] Preferably, drain pipes are provided at the lower sides of both ends of the main pipe body, and detachable drain pipe plugs are provided at the ends of the drain pipes.

[0009] Preferably, the lower end height of the nozzle guide slot hole is higher than the bottom height of the spray rake pipe.

[0010] Beneficial effects of the present invention: The present application provides a nozzle tube body with a closed upper end at the input end of the nozzle, and a nozzle guide slot hole is provided on one side of the nozzle tube body. The width of the nozzle guide slot hole is smaller than the diameter of the nozzle throat of the nozzle, and the area of ​​the nozzle guide slot hole is larger than the cross-sectional area of ​​the nozzle throat. This can effectively prevent impurities from clogging the nozzle of the rake pipe of the rake sootblower. Compared with the prior art, the performance of the sootblower can be greatly improved, and it is more conducive to the long-term stable operation of the system.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of a rake pipe of an anti-clogging rake-type sootblower of the present invention;

[0013] Figure 2 It is a side view of a rake pipe of an anti-clogging rake-type sootblower of the present invention;

[0014] Figure 3 The present invention is a partial structural schematic diagram of a rake pipe of an anti-clogging rake-type sootblower.

[0015] In the figure: 1-inlet pipe, 2-spray rake pipe, 3-nozzle, 4-nozzle body, 5-nozzle guide slot, 21-main body, 22-main plug, 23-exhaust pipe, 24-exhaust pipe plug, 31-nozzle throat. [Specific implementation method]

[0016] See also Figure 1 , Figure 2 and Figure 3 The present invention discloses an anti-clogging rake pipe of a rake type sootblower, comprising an air inlet pipe 1, a blowing rake pipe 2 and a plurality of nozzles 3, wherein the air inlet pipe 1 is communicated with the blowing rake pipe 2, a nozzle 3 is arranged at the lower end of the blowing rake pipe 2, an input end of each nozzle 3 is provided with a nozzle tube body 4 with a closed upper end, a nozzle guide slot 5 is arranged on one side of the nozzle tube body 4, a width of the nozzle guide slot 5 is smaller than a diameter of a nozzle throat 31 of the nozzle 3, and an area of ​​the nozzle guide slot 5 is larger than a cross-sectional area of ​​the nozzle throat 31.

[0017] The spray rake pipe 2 includes a main pipe body 21 , both ends of the main pipe body 21 are provided with main pipe plugs 22 , and the air inlet pipe 1 is connected to the middle position of the main pipe body 21 .

[0018] Drain pipes 23 are provided at the lower sides of both ends of the main pipe body 21 , and detachable drain pipe plugs 24 are provided at the ends of the drain pipes 23 .

[0019] The lower end height of the nozzle guide slot hole 5 is higher than the bottom height of the spray rake pipe 2 .

[0020] Working process of the present invention:

[0021] In the working process of the anti-clogging rake-type sootblower rake pipe of the present invention, first, the sootblowing medium enters the spray rake pipe 2 from the main air inlet pipe 1, and the nozzles 3 are evenly arranged at the lower part of the spray rake pipe 2. The spray medium then enters the nozzle guide slots 5 from the spray rake pipe 2 respectively, and then is sprayed onto the dust accumulation surface through the nozzle 3. The nozzle 3 is inserted into the spray rake pipe 2, and the width of the nozzle guide slot 5 is smaller than the diameter of the nozzle throat 31, which can effectively block particles larger than the nozzle throat 31 outside the nozzle guide slot 5, and prevent large particle impurities from entering the nozzle throat 31 and clogging the nozzle 3. At the same time, the gas flow area of ​​the nozzle guide slot 5 is larger than the flow cross-section of the nozzle throat 31, which ensures the medium flow rate of the nozzle 3 and the blowing effect of the nozzle 3.

[0022] Since the nozzle 3 is arranged vertically, the large particles blocked outside the nozzle guide slot hole 5 will fall to the bottom of the spraying rake pipe 2 when the sootblower stops spraying, and finally gather at both ends of the main pipe body 21 under the action of the flow of the spraying medium and its own inertia. Both ends of the main pipe body 21 are blocked with a main pipe plug 22, and an emptying pipe 23 is provided to collect impurity particles for the spraying medium. An emptying pipe plug 24 is provided at the end of the emptying pipe 23. The emptying pipe plug 24 is detachable and can be regularly disassembled to clean the internal impurities.

[0023] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A rake pipe of an anti-clogging rake sootblower, characterized in that: The invention comprises an air intake pipe (1), a spray rake pipe (2) and a plurality of nozzles (3), wherein the air intake pipe (1) is connected to the spray rake pipe (2), a nozzle (3) is provided at the lower end of the spray rake pipe (2), an input end of each nozzle (3) is provided with a nozzle tube body (4) with a closed upper end, a nozzle guide slot (5) is provided on one side of the nozzle tube body (4), a width of the nozzle guide slot (5) is smaller than a diameter of a nozzle throat (31) of the nozzle (3), and an area of ​​the nozzle guide slot (5) is larger than a cross-sectional area of ​​the nozzle throat (31).

2. The anti-clogging rake pipe of the rake type sootblower according to claim 1, characterized in that: The spray rake pipe (2) comprises a main pipe body (21), both ends of the main pipe body (21) are provided with main pipe plugs (22), and the air inlet pipe (1) is connected to the middle position of the main pipe body (21).

3. The anti-clogging rake pipe of the rake type sootblower according to claim 2, characterized in that: Drain pipes (23) are provided at the lower sides of both ends of the main pipe body (21), and detachable drain pipe plugs (24) are provided at the ends of the drain pipes (23).

4. An anti-clogging rake pipe of a rake sootblower according to any one of claims 1 to 3, characterized in that: The height of the lower end of the nozzle guide slot hole (5) is higher than the height of the bottom of the spray rake pipe (2).

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