High-temperature butterfly valve
A high-temperature butterfly valve and valve body technology, which is used in lift valves, valve details, valve devices, etc., can solve problems such as affecting the service life of butterfly valves and sealing, and achieve the effects of simple structure, small thermal deformation, and small sealing resistance.
Active Publication Date: 2011-04-27
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC +1
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Problems solved by technology
However, the temperature of raw gas can reach 750-950°C, while the high-temperature butterfly valve generally used in gas pipelines is designed to operate at a maximum temperature of only 650°C. Excessively high temperatures will affect the service life and sealing performance of butterfly valves.
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[0017] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0018] See figure 1 , figure 2 , is a schematic diagram of the structure of the high temperature butterfly valve of the present invention, including a valve body 1, a valve stem 2, a valve plate 3, and a sealing ring 4. The valve plate 3 is connected to the valve body 1 through the valve stem 2. There is a sealing ring 4, and the valve body 1 includes a valve casing 5, a ring wall 6, a rib plate 7 and a refractory castable insulation layer 8, the ring wall 6 and the valve casing 5 are connected by a rib plate 7, and the rib plate 7 is cut along the ring wall 6 Arranged vertically, the refractory castable insulation layer 8 is arranged between the valve shell 5 and the ring wall 6 . The driving end of the valve rod 2 is connected to the driving device 18 through the drum-type gear coupling 17. The driving device 18 can be in various forms such a...
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The invention relates to a high-temperature butterfly valve. The valve comprises a valve body, a valve rod, a valve plate and a sealing ring, wherein the valve plate is connected with the valve body through the valve rod. The valve is characterized in that: the valve body comprises a shell, an annular wall, a rib plate and a fire-resistant castable heat-insulation layer, wherein the annular wall is connected with the shell through the rib plate; and the fire-resistant castable heat-insulation layer is arranged between the valve shell and the annular wall. The sealing ring comprises two semilunar sealing seats, wherein the two semilunar sealing seats are rotationally arranged at 180 degrees relative to the axis of the valve plate. An axial compensating device is also arranged on the end part of the valve rod and comprises a push bearing and an adjusting bolt, wherein the tail part of the adjusting bolt is sequentially connected with a push bearing block, the push bearing and the end part of the valve rod. Compared with the prior art, the high-temperature butterfly valve has the advantages that: 1) the temperature of a suitable medium can be up to 750 to 950 DEG C, and the valve body with the fire-resistant castable heat-insulation layer has low heat loss and thermal deformation; and 2) the axial compensating device can be adjusted under the condition of thermal state, so that the influence of thermal expansion on sealing is overcome.
Description
technical field [0001] The invention relates to the field of high-temperature raw gas pipeline valves, in particular to a high-temperature butterfly valve. Background technique [0002] At present, coal will produce a large amount of high-temperature raw gas during the high-temperature carbonization process of coke ovens. In production, a large amount of ammonia water is generally sprayed to cool down. A large amount of heat energy in the raw gas is not used and is wasted. A large amount of high-temperature raw gas is directly exported, and the waste heat boiler is used for heat exchange to generate medium-pressure or high-pressure steam, which can also be used for power generation. This will not only make use of waste heat, but also generate good economic value. However, the temperature of raw gas can reach 750-950°C, while the high-temperature butterfly valve generally used in gas pipelines is designed to operate at a maximum temperature of only 650°C. Excessively high tem...
Claims
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IPC IPC(8): F16K27/02F16K1/226F16K1/32
Inventor 罗浩关世文尹高夏敬山杨耕桃白城
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC