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High pressure steam hopper dredging device

A high-pressure steam and hopper technology, which is applied in the field of high-pressure steam hopper dredging devices, can solve problems such as clogging of raw coal hoppers, and achieve the effects of low steam consumption, low investment and little wear and tear.

Inactive Publication Date: 2014-08-13
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of blockage of raw coal hoppers in existing thermal power plants, the present invention further proposes a high-pressure steam hopper dredging device

Method used

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  • High pressure steam hopper dredging device

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 Describe the present embodiment, a kind of high-pressure steam hopper dredging device of the present embodiment comprises hopper 1, coal conveying belt 10 and coal conveying chute 11, described a kind of high-pressure steam hopper dredging device also comprises air storage tank 5, air inlet valve 6 , a steam distribution cabinet 7, a controller 8, a plurality of high-pressure steam nozzles 2, a plurality of high-pressure steam pipes 3 and a plurality of electromagnetic valves 4, and a plurality of high-pressure steam nozzles 2 are uniformly arranged on the outer wall of the hopper 1 in layers from bottom to top Above, each layer of high-pressure steam nozzles 2 is respectively connected to one side of the gas storage tank 5 through the high-pressure steam pipeline 3, and the connecting end of each layer of high-pressure steam pipeline 3 and the gas storage tank 5 is respectively provided with a solenoid valve 4, and the ...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 To describe this embodiment, each high-pressure steam nozzle 2 described in this embodiment is fixedly connected to the outer wall of the hopper 1 respectively. Other compositions and connection methods are the same as those in Embodiment 1.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 To describe this embodiment, the plurality of high-pressure steam nozzles 2 in this embodiment are divided into three layers or four layers and are evenly distributed on the outer wall of the hopper 1 . Other compositions and connection modes are the same as those in Embodiment 1 or 2.

[0011] This design adopts time-sharing and graded dredging to ensure the reliability and economy of dredging. According to the site conditions, most of the clogged area is in the third section from the hopper outlet to the silo. The device is set to three or four layers of steam flow. For dredging, 4-8 staggered steam fan nozzles are set at each stage according to the size of the hopper, and the spray angle is precisely adjusted according to the size of the hopper. One layer of dredging is one meter above the feed port, and a layer of dredging is set up every one meter or so, which can be set to three or four layers. The visual s...

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Abstract

The invention belongs to a dredging device, particularly relates to a high-pressure steam hopper dredging device, and solves the problem that the raw coal hopper of the existing heat-engine plant is blocked. The high-pressure steam hopper dredging device comprises a hopper, a coal conveying belt and a coal conveying groove, and also comprises a steam storage tank, a steam inlet valve, a steam distribution cabinet, a controller, a plurality of high-pressure steam nozzles, a plurality of high-pressure pipelines and a plurality of solenoid valves, wherein the high-pressure steam nozzles are uniformly distributed on the outer wall of the hopper from bottom to top in a layered way; each layer of high-pressure steam nozzles are respectively connected to one side of the steam storage tank by the high-pressure steam pipelines; the coal conveying groove is formed below the hopper; the coal conveying belt is arranged inside the coal conveying groove; an oppositely reflected sensor is arranged at one side of the tail end of the hopper and is fixedly connected to the upper side of the coal conveying groove. The high-pressure steam hopper dredging device is used for dredging the hopper.

Description

technical field [0001] The invention relates to a dredging device, in particular to a dredging device for a high-pressure steam hopper. Background technique [0002] At present, the raw coal bunkers and hoppers of domestic power plants are in the form of inverted cones or hyperbolas. The upper port is large and the lower port is small. The upper port is fed and the lower port is discharged. The raw coal falls from top to bottom by its own weight. The falling material falls in the inverted conical container, so the cross-sectional area becomes smaller as it goes down, and the side wall gradually increases the extrusion force on the material to increase the frictional resistance, especially in the northeast region, where the raw coal contains ice and snow in winter. The rear part of the plant will melt, making the raw coal moist to form ice and irregular frozen blocks, which will cause the raw coal to block. For the coal blockage that often occurs in thermal power plants, the...

Claims

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Application Information

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IPC IPC(8): B65D88/70
Inventor 杜云波
Owner STATE GRID CORP OF CHINA
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