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Circulating fluidized bed boiler explosion protection system

A technology of circulating fluidized bed and explosion-proof system, which is applied in the direction of fluidized bed combustion equipment, burning fuel in melting state, combustion type, etc., and can solve problems such as single arrangement of furnace explosion-proof devices, inability to set and adjust take-off pressure, etc. To achieve the effect of reducing damage

Pending Publication Date: 2018-03-30
南通万达能源动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to change the current situation that the existing furnace explosion-proof device has a single layout and cannot set and adjust its take-off pressure, and provides a graded and adjustable explosion-proof system for circulating fluidized bed boilers

Method used

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  • Circulating fluidized bed boiler explosion protection system
  • Circulating fluidized bed boiler explosion protection system
  • Circulating fluidized bed boiler explosion protection system

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Embodiment Construction

[0017] The technical solutions of the present invention will be clearly and completely described below through specific embodiments.

[0018] Such as figure 1 Shown is the explosion-proof system of the circulating fluidized bed boiler of the present invention, which includes a casing 1 arranged on the walls on both sides of the furnace, an explosion-proof device 2, an inspection door 3 and a flue discharge 4, and the casing 1 is welded on the furnace On the side wall of the casing 1, the inside of the casing 1 is filled with castable material 5, and a circular channel with a diameter of D is left in the middle; the explosion-proof device 2 is arranged obliquely at an angle of θ with the vertical direction, including a door seat 6, an explosion-proof door cover 7. Counterweight 8, clip 9, pin shaft 10, cotter pin 11 and castable 5; the door seat 6 is welded on the casing 1, the explosion-proof door cover 7 is lined with castable 5, and the explosion-proof door cover 7 The uppe...

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Abstract

The invention discloses a circulating fluidized bed boiler explosion protection system. The circulating fluidized bed boiler explosion protection system comprises housings, explosion protection devices, inspection doors, smoke exhausting flues and castables which are arranged on two lateral walls of a hearth. Each explosion protection device comprises a door seat, an explosion protection door cover, a counterweight, a clamp, a pin shaft, a cotter pin and the castables. When the positive pressure of an area of the hearth reaches an action set value of the corresponding explosion protection device, the explosion protection device in the area acts immediately, the explosion protection door cover is opened upwards around the corresponding pin shaft by a certain angle, positive-pressure smoke is exhausted from the opening position, the pressure of the hearth is decreased, and when the positive pressure is decreased to a safe value, the explosion protection door cover is reset under the action of self weight. The circulating fluidized bed boiler explosion protection system is arranged in a grading mode, is flexible in response, is opened and closed automatically, and can guarantee that surplus smoke is smoothly exhausted under the abnormal condition of positive pressure of the hearth. Besides, when one or more positions of the hearth have deflagration, the nearby explosion protectiondevices act immediately, gas products caused by deflagration are discharged through the explosion protection devices in time, and damage to the hearth and the like by pressure impact generated by deflagration is reduced to the maximum extent.

Description

technical field [0001] The invention relates to an explosion-proof system in the technical field of circulating fluidized bed boiler equipment. Background technique [0002] Furnace deflagration means that the combustible substances accumulated in the boiler furnace are ignited instantly, and the combustion products break through to the surrounding space instantly, and the side pressure of the flue gas rises rapidly, causing damage to the furnace, which greatly endangers the normal production and operation of the enterprise, and even May cause personal injury. The existing furnace explosion-proof devices are generally only arranged on the two side walls near the furnace outlet, and generally after the installation is completed, the operating pressure cannot be set or adjusted. Contents of the invention [0003] The technical problem to be solved by the present invention is to change the current situation that the existing furnace explosion-proof device has a single layout...

Claims

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Application Information

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IPC IPC(8): F23C10/18
CPCF23C10/18F23C2206/10
Inventor 钱曾蔡永祥蔡宏伟茅正东张薇薇王群陈俊袁克
Owner 南通万达能源动力科技有限公司
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