CN111237802A - A thermal power plant air preheater blockage cleaning booster jet nozzle - Google Patents

Abstract

The invention relates to the technical field of boiler cleaning equipment, in particular to a boosting jet nozzle for cleaning blockage of an air preheater in a thermal power plant; the cleaning effect can be improved, the flushing efficiency is improved, the cleaning construction difficulty caused by the reaction force is reduced, and the cleaning danger is reduced; the jet flow jet nozzle comprises a jet head body, wherein a groove is formed in the right end of the jet head body, a jet flow impact nozzle is arranged at the left end of the jet head body, the right end of the jet flow impact nozzle is communicated with the left end of the groove, three groups of boosting nozzles are arranged on the right side of the side wall of the jet head body in a communicated mode, the three groups of boosting nozzles are all communicated with the side wall of the groove, and the three groups of boosting nozzles are all at an.

Description

A thermal power plant air preheater blockage cleaning booster jet nozzle

technical field

The invention relates to the technical field of boiler cleaning equipment, in particular to a booster jet nozzle for clogging and cleaning of an air preheater in a thermal power plant.

Background technique

As we all know, when the power plant boiler is running, two types of fouling and salt deposits, which are loose fouling and cohesive fouling, often appear in the tube bundle of the surface tube air preheater. The heat exchange efficiency of the air preheater is insufficient, and the safe operation of the boiler will be threatened if the blockage is serious. The internal blockage of the conventional air preheater tube bundle is cleared by mechanical impact dredging, compressed air dredging, water gun dredging, etc., while mechanical and compressed air dredging, It is effective for loosening the dust accumulation in the air preheater, but it does not have the ability to clean up the hardening and salt formation. The high-pressure water gun dredges the hardening and the salt formation, and has a certain washing effect on the hardening and salt formation. There is a reverse force, which makes cleaning and construction difficult.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a thermal power plant air preheater blockage cleaning booster jet nozzle that improves cleaning effect, improves flushing efficiency, reduces cleaning construction difficulty caused by reaction force, and reduces cleaning risk.

A thermal power plant air preheater plugging and cleaning boosting jet nozzle includes a nozzle body, a groove is arranged on the right end of the nozzle body, a jet impact nozzle is arranged on the left end of the nozzle body, the right end of the jet impact nozzle is communicated with the left end of the groove, and the nozzle body The right side of the side wall is communicated with three groups of booster nozzles, and the three groups of three groups of booster nozzles are all communicated with the sidewall of the groove, and the three groups of booster nozzles are all at an angle of 60 degrees to the axis of the nozzle body.

The air preheater of a thermal power plant of the present invention blocks and clears the booster jet nozzle, the diameter of the jet impingement nozzle is 0.4-0.7mm, and the inner diameter of the three groups of booster nozzles is 0.3-0.6mm.

The invention discloses a plugging and cleaning boosting jet nozzle of an air preheater of a thermal power plant, and the nozzle body is arranged in a conical shape.

Compared with the prior art, the beneficial effects of the present invention are as follows: with the high-pressure pump pressure of 10-30MPa, the jet impingement nozzle at the front of the nozzle and the booster nozzle at the rear make the nozzle have the function of automatically advancing and breaking blockage, and the booster nozzle has the function of automatically advancing and breaking blockages. The function of expanding the impact range and further cleaning the inner wall of the pipeline. When the high-pressure water jet is ejected from the jet in the front section, it will impact and break the blockage inside the air preheater pipeline. Out of the pipeline, at the same time, it provides boosting force to push the nozzle forward, and the efficiency of breaking the blockage is greatly enhanced, which solves the problem that the original high-pressure water jet nozzle will transport the scales removed on the pipe wall forward. When the jet hits the nozzle, it will impact and break the blockage inside the air preheater pipe; the jet ejected from the booster nozzle will automatically recoil the impact-broken blockage out of the pipe, and at the same time provide a boost force to push the nozzle forward to reduce the reaction force Stronger problems, this solution effectively solves the blocking problem of deposition type high-hardness hardening, and significantly improves the blocking effect. The original high-pressure water gun and compressed air blocking removal method takes 8-15 minutes to clear a blocked pipeline. After pushing the jet nozzle, it takes 15-30 seconds to clean a single root, and the blocking efficiency is increased by 20-30 times.

Description of drawings

Fig. 1 is the structural representation of the present invention;

The symbols in the drawings are: 1. Nozzle body; 2. Groove; 3. Jet impingement nozzle; 4. Booster nozzle.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

As shown in Figure 1, a thermal power plant air preheater blockage cleaning boost jet nozzle of the present invention comprises a nozzle body 1, a groove 2 is provided on the right end of the nozzle body 1, a jet impact nozzle 3 is provided on the left end of the nozzle body 1, and the jet The right end of the impact nozzle 3 is communicated with the left end of the groove 2, and the right side of the side wall of the nozzle body 1 is communicated with three groups of booster nozzles 4, and the three groups of three groups of booster nozzles 4 are all communicated with the side wall of the groove 2, and the three groups of booster nozzles 4 Both are at a 60-degree angle to the axis of the nozzle body 1; with the high-pressure pump pressure of 10-30MPa, the jet impingement nozzle at the front of the nozzle and the booster nozzle at the rear make the nozzle have the function of automatically advancing and breaking the blockage, and the booster nozzle also has the ability to expand the impact. It can further clean the inner wall of the pipeline. When the high-pressure water jet is ejected from the jet in the front section, it will impact and break the blockage inside the air preheater pipeline. At the same time, it provides a boosting force to push the nozzle forward, and the efficiency of breaking the blockage is greatly enhanced, which solves the problem that the original high-pressure water jet nozzle will transport the scales removed on the pipe wall forward. When the nozzle is sprayed, it will impact and break the blockage inside the air preheater pipeline; the jet ejected from the booster nozzle will automatically recoil the impact and broken blockage out of the pipeline, and at the same time provide a boost force to push the nozzle forward, reducing the strong reaction force. This solution effectively solves the blocking problem of deposition type high-hardness hardening, and significantly improves the blocking removal effect. The original high-pressure water gun and compressed air blocking removal method takes 8-15 minutes to clear a blocked pipeline, and the booster jet is used. It takes 15-30 seconds to clean a single root after the nozzle, and the blocking efficiency is increased by 20-30 times.

The air preheater of a thermal power plant of the present invention blocks and clears the booster jet nozzle. The diameter of the jet impact nozzle 3 is 0.4-0.7mm, and the inner diameter of the three groups of booster nozzles 4 is 0.3-0.6mm; increasing the inner diameter of the nozzle can improve the cleaning effect. , to improve the reliability of the equipment.

In the present invention, the air preheater of a thermal power plant is blocked and cleaned by boosting the jet nozzle. The nozzle body 1 is set to be conical; and water volume.

A thermal power plant air preheater blockage cleaning booster jet nozzle of the present invention, when in use, cooperates with the high-pressure pump pressure of 10-30MPa, the jet impingement nozzle at the front of the nozzle and the booster nozzle at the rear make the nozzle have the ability to automatically advance and break The function of blocking, the booster nozzle also has the function of expanding the impact range and further cleaning the inner wall of the pipeline. When the high-pressure water jet is ejected from the jet in the front section, it will impact and break the blockage inside the air preheater pipeline. The jet automatically recoils the impacted and broken blockages out of the pipeline, and at the same time provides a boosting force to push the nozzle forward, and the efficiency of breaking the blockage is greatly enhanced, which solves the problem that the original high-pressure water jet nozzle will remove the scale on the wall of the pipe. When the high-pressure water jet is ejected from the jet impinging nozzle in the front section, it will impact and break the blockage inside the air preheater pipeline; Push the nozzle forward to reduce the problem of strong reaction force. This solution effectively solves the problem of blockage of deposition type high-hardness hardening, and significantly improves the blockage removal effect. The original high-pressure water gun and compressed air blockage removal method clears a blockage. The pipeline takes 8-15 minutes, and it takes 15-30 seconds to clean a single root after using the booster jet nozzle, and the blocking efficiency is increased by 20-30 times. The power and water volume of the water supply high-pressure pump station.

A thermal power plant air preheater plugging and cleaning boosting jet nozzle of the present invention is installed, connected or set up by common mechanical methods, and can be implemented as long as its beneficial effects can be achieved.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (3)

1. A thermal power plant air preheater plugging and cleaning boosting jet nozzle is characterized in that, comprising nozzle body (1), nozzle body (1) right end is provided with groove (2), nozzle body (1) left end is provided with jet flow The impact nozzle (3), the right end of the jet impact nozzle (3) is communicated with the left end of the groove (2), and the right side of the side wall of the nozzle body (1) is communicated with three groups of booster nozzles (4), three groups of three groups of booster nozzles ( 4) All are communicated with the side wall of the groove (2), and the three groups of booster nozzles (4) are all at an angle of 60 degrees to the axis of the nozzle body (1). 2. a kind of thermal power plant air preheater blockage cleaning boosting jet nozzle as claimed in claim 1 is characterized in that, the diameter of jet impingement nozzle (3) is 0.4-0.7mm, and three groups of boosting nozzles (4) inner diameter 0.3-0.6mm. 3. The air preheater blockage cleaning booster jet nozzle of a thermal power plant as claimed in claim 2, characterized in that the nozzle body (1) is arranged in a conical shape.

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