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High-temperature slap discharging valves

A slag discharge valve, high temperature technology, applied in sliding valves, valve devices, combustion methods, etc., can solve problems such as poor high temperature resistance, performance failure, slag material sticking and jamming, and achieve low price and increased reliability Effect

Inactive Publication Date: 2010-05-12
北京水圣木科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the fluidized bed boilers produced and used at home and abroad generally use 2 to 4 slag discharge valves to control the flow of slag discharge. A gate valve with a gate or a butterfly valve with a rotatable disc element to adjust the flow rate. The use temperature of this type of structure and the high-temperature slag discharge valve made of this metal is required to be lower than 800 ° C, and the high temperature resistance is poor. When When the temperature is higher than 600°C, the performance of the metal begins to fail, and its mechanical and chemical properties become poor, so that the slag material will stick and jam and lose control. Therefore, the life of the metal slag discharge valve is short
In addition, the way to control the slag discharge valve is to use high-pressure air to blow outward, and adjust the pressure and flow of high-pressure air to adjust the slag discharge volume. Therefore, the ability to discharge solid slag is very weak, and the reliability is also very poor.

Method used

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Examples

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Embodiment Construction

[0066] An embodiment structure of a high temperature slag discharge valve is as follows: a valve body 1 is provided with a vertical upward opening and two horizontal end openings, the valve body 1 has an inner layer 2 and an outer layer 3; The top of 1 is equipped with a bonnet 4, and the inner wall of the bonnet 4 is provided with a bonnet inner layer 5; a valve core 6 is installed in the cavity formed by the valve body 1 and the bonnet 4, and the spool 6 has an elliptical cone shape. The head and a core rod, the upper end of the core rod is connected with a heat-resistant connecting rod 8 through a universal joint 7, and the latter is connected with another heat-resistant connecting rod 10 through another universal joint 9. The upper end of the connecting rod 10 is connected with the power transmission device 11 which can be rotated and lifted.

[0067] The production process of the high temperature slag discharge valve is as follows:

[0068] (1) Valve body 1 and bonnet 4:...

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Abstract

A high temperature slag discharge valve consists of a body, a cap, a core, heat-expelling levers, and a transmission. The core has an ellipsoidal conic top and connected with the transmission througha universal joint and two heat-expelling levers. The transmission can be screwed up and down. The main parts said above are all made from nonmetal materials, by powder metallurgy and composite materials molded or cast, curing, drying, and sintering, so that all the parts, especially the core, are of high temperature resistance and wear resistance, and reliable to control slag discharge.

Description

Technical field: [0001] The invention relates to a high-temperature slag discharge valve, in particular to a slag discharge control device for a circulating fluidized bed boiler. Background technique: [0002] At present, the fluidized bed boilers produced and used at home and abroad generally use 2 to 4 slag discharge valves to control the flow of slag discharge. A gate valve with a gate or a butterfly valve with a rotatable disc element to adjust the flow rate. The use temperature of this type of structure and the high-temperature slag discharge valve made of this metal is required to be lower than 800 ° C, and the high temperature resistance is poor. When When the temperature is higher than 600°C, the properties of the metal begin to fail, and its mechanical and chemical properties become poor, so that the slag material sticks and jams and loses control. Therefore, the life of the metal slag discharge valve is short. In addition, the way to control the slag discharge val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C10/24F16K3/00
Inventor 徐震
Owner 北京水圣木科技有限责任公司
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