CN202322879U

CN202322879U - Blockage clearing structure for pipeline segment from coal spraying dispenser to coal dust spray gun of blast furnace

Info

Publication number: CN202322879U
Application number: CN2011204276582U
Authority: CN
Inventors: 张�杰; 颜新
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-07-11
Anticipated expiration: 2021-11-02

Abstract

The utility model discloses a blockage clearing structure for a pipeline segment from a coal spraying dispenser to a coal dust spray gun of a blast furnace. The blockage clearing structure comprises a coal dust branch pipe (7), wherein the coal dust branch pipe (7) is connected to a coal dust dispenser (1), the coal dust spray gun (8) is arranged at the end of the coal dust branch pipe (7), a blockage examination device (3) is connected to the coal dust branch pipe (7) in series, and the coal dust branch pipe (7) is also connected with a gas purging and cooling pipeline (9). The blockage clearing structure is characterized in that the coal dust branch pipe (7) is connected with a dust filtering device (2) by a blockage clearing pipeline with a branch pipe blockage clearing valve (5), and the blockage clearing pipeline is also connected with a sweeping pipeline with a blockage clearing main pipe purging valve (6). The blockage clearing structure disclosed by the utility model is simple in structure and convenient in operation; and when the coal dust dispenser and the dispenser branch pipe are severely blocked, coal is not needed to be placed at the coal dust dispenser or spray gun position, so that the coal dust pollution is effectively prevented, and the burden of the operating personnel is alleviated.

Description

The block clearing structure of a kind of pulverized coal injection divider to pulverized coal gun duct section

Technical field

The utility model relates to the ducted block clearing structure of the air conveying dust of a kind of use.

Background technology

Pulverized coal distributor is the final tache of pulverized coal injection to pulverized coal gun in the bf coal injection system, also is that the pipeline of injection system is terminal, and resistance is decreased bigger, and easy chute blockage, chute blockage be cleaning in time, just causes the damage of pulverized coal gun easily.

As shown in Figure 1, in the existing technology, the structure of pulverized coal injection divider to pulverized coal gun; Clogging-preventing measures is few, the very not environmental protection of block clearing mode, and most factory operating method all is after having found that spray gun or coal jetting branch stop up; Just open source purge gas and purge, as open the arm blow down valve 4 on the arm, use rare gas element oppositely to purge; If purge inoperatively, directly in air, put coal dust with regard to having only the pipeline between spray gun, the matchmaker's powder divider opened, to reach the effect of mediation.Often cause coal dust excessive in a large number.

The utility model content

The purpose of the utility model is to provide a kind of block clearing structure that when block clearing, reduces pulverized coal injection divider to the pulverized coal gun section of topsoil.

To achieve these goals; Adopt following technical scheme: the block clearing structure of a kind of pulverized coal injection divider to pulverized coal gun section; Comprise be connected on the pulverized coal distributor, coal dust arm that end is provided with pulverized coal gun; Be serially connected with the inspection block apparatus on the coal dust arm, also be connected with gas purging and cooling duct on the coal dust arm, it is characterized in that: through block clearing pipe connection dust filtering device is arranged on the said coal dust arm with arm block clearing valve.

As further optimization, for ease the block clearing pipeline is cleaned, prevent the obstruction of block clearing pipeline, also be connected with cleaning pipeline on the said block clearing pipeline with block clearing person in charge blow down valve.

Said dust filtering device is for purging the ash bucket that pipe outlet is provided with, and the ash bucket outlet is provided with the strainer of porous media structure.

As further optimization, ash discharge for ease, said ash bucket bottom is provided with ash removing opening.

The utility model is simple in structure, easy to operate, little to the existing equipment transformation; Invest lowlyer, when pulverized coal distributor and divider arm seriously stop up, need not put coal to the external world at pulverized coal distributor place or spray gun; Prevent that effectively coal dust from polluting, and alleviated operator's burden.

Description of drawings

Fig. 1 is the prior art constructions synoptic diagram;

Fig. 2 is the structural representation of the utility model.

Among the figure, part 1 is a divider, and part 2 is a dust filtering device, and part 3 is the inspection block apparatus, and part 4 is the arm blow down valve, and part 5 is an arm block clearing valve, and part 6 is responsible for blow down valve for block clearing, and part 7 is the coal dust arm, and part 8 is a pulverized coal gun, and part 9 is gas purging and cooling duct.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described, but the utility model not only is confined to this.

As shown in Figure 2; Divider 1 is delivered to pulverized coal gun 8 ejections with coal dust from coal dust arm 7; In operational process, the staff judges according to the signal feedback of the inspection block apparatus 3 on the coal dust arm 7 whether certain root arm stops up, if stop up; Use rare gas element to purge through gas purging on the coal dust arm 7 and cooling duct 9, till the plugging blackout.As still can not block clearing, then explanation runs into chute blockage, and stopping state is comparatively serious.Open the arm block clearing valve 5 on the block clearing pipeline this moment, and the valve of closing divider 1 exit directly purges to dust filtering device nitrogen, and the gas that is mixed with coal dust is filtered the back by dust filtering device and discharges, and such mode environmental protection has reduced topsoil.If more than one of the arm that stops up then can be through same method by the root block clearing.

After using the block clearing pipeline, can close arm block clearing valve 5, open 6 pairs of block clearing pipelines of block clearing person in charge's blow down valve and purge, prevent the pipeline accumulated powder.

In the practical implementation process, can on every arm the block clearing pipeline that the rear end has dust filtering device 2 be set all, as a kind of optimization, also can be with every arm through pipe connection to a block clearing pipeline.The position that the block clearing pipeline is provided with can be the optional position on the arm, and preferred scheme is the exit of divider, can carry out block clearing to the whole piece arm like this.

Wherein the structure formation of dust filtering device can be diversified; Its effect is exactly the coal dust that filters in the deashing gas; The specific form of dust filtering device can have the ash bucket that filters cloth bag for having outlet; Certainly filter that cloth bag is also replaceable can also to be provided with ash removing opening for other have the strainer of porous media structure in the ash bucket bottom, handled easily personnel periodic cleaning.

The above; Only be one of better examples of implementation of the utility model; Be not that the utility model is done any pro forma restriction; Though the utility model discloses on preferred embodiments, to any simple modification, equivalent variations and modification that above embodiment did, all belong in the scope of the utility model technical scheme according to the technical spirit of the utility model.

Claims

1. the block clearing structure of pulverized coal injection divider to a pulverized coal gun duct section; Comprise and be connected the coal dust arm (7) that pulverized coal distributor (1) is gone up, end is provided with pulverized coal gun (8); Be serially connected with inspection block apparatus (3) on the coal dust arm (7); Also be connected with gas purging and cooling duct (9) on the coal dust arm (7), it is characterized in that: said coal dust arm (7) is gone up has dust filtering device (2) through the block clearing pipe connection with arm block clearing valve (5).

2. the block clearing structure of pulverized coal injection divider as claimed in claim 1 to pulverized coal gun duct section is characterized in that: also be connected with the cleaning pipeline with block clearing person in charge's blow down valve (6) on the said block clearing pipeline.

3. according to claim 1 or claim 2 the block clearing structure of pulverized coal injection divider to pulverized coal gun duct section, it is characterized in that: said dust filtering device is for purging the ash bucket that pipe outlet is provided with, and the ash bucket outlet is provided with the strainer of porous media structure.

4. the block clearing structure of pulverized coal injection divider as claimed in claim 3 to pulverized coal gun duct section is characterized in that: said ash bucket bottom is provided with ash removing opening.