CN109442051A - 一种带柔性密封的双叶片绝热风门 - Google Patents

一种带柔性密封的双叶片绝热风门 Download PDF

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CN109442051A
CN109442051A CN201811407096.8A CN201811407096A CN109442051A CN 109442051 A CN109442051 A CN 109442051A CN 201811407096 A CN201811407096 A CN 201811407096A CN 109442051 A CN109442051 A CN 109442051A
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air door
blade
frame
flexible sealing
twayblade
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陈健陵
刘鹏
王锦生
余雏麟
闫晓
莫春鸿
邓仲勇
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Dongfang Boiler Group Co Ltd
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Dongfang Boiler Group Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2268—Sealing means for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Abstract

本发明公开了一种带柔性密封的双叶片绝热风门，包括风门框架和装配在风门框架内的风门叶片，风门叶片通过转轴及执行机构带动其转动，风门叶片包括叶片框架和两块分别设于叶片框架两侧的叶片，在叶片框架内于两块叶片之间填充绝热材料，在风门框架与风门叶片之间设置波浪形柔性密封垫片，在风门框架与转轴之间采用带石墨盘根的密封盒进行密封。本发明带柔性密封的双叶片绝热风门通过将风门叶片设置为双叶片结构，并在内外两块叶片之间的风门框架内部填充绝热材料，可以有效减少换热器风门的热量损失；同时，通过在风门框架与风门叶片之间设置波浪形柔性密封垫片，从而能够保证风门叶片与风门框架之间的密封性能，有效避免工质发生泄漏。

Description

一种带柔性密封的双叶片绝热风门
技术领域
本发明涉及工业换热器生产制造技术领域，尤其是涉及一种用于换热器且带柔性密封的双叶片绝热风门。
背景技术
工业换热器通常设置有进口和出口风门，用于控制冷热空气的进入和流出，换热器风门的主要结构包括风门框架和装配在风门框架内的风门叶片，风门叶片通过与风门框架及风门叶片配套设置的转轴和动力执行机构带动风门叶片在风门框架内转动，从而实现风门叶片的开度调节，转轴和与其配合作用的动力执行机构均为现有技术中的常规机械结构。如图1所示，为减小换热器热量损失，换热器壳体外壁一般都设置了绝热套，当换热器工作于加热或保温工况时，进出口风门将调整到关闭状态，使换热器形成密闭空间，以便换热器能较快实现升温或持久保温；但由于风门通常是采用钢材制作而成的，其导热系数大，因此即使风门处于关闭状态，也会有大量的热量损失，且由于制造及装配偏差，风门的框架、转轴和叶片均可能存在不同程度的工质泄露；其中，风门框架与转轴之间的间隙造成的工质泄露称为风门的外漏，风门叶片与风门框架之间的间隙造成工质从风门叶片一侧泄露到另一侧，这种情况称为风门的内漏；换热器风门受限于前述三个方面的不利因素影响，将会导致换热器升温启动和保温运行困难。
发明内容
本发明所要解决的技术问题是针对现有技术存在的上述不足提供一种带柔性密封的双叶片绝热风门。
本发明解决其技术问题所采用的技术方案是：一种带柔性密封的双叶片绝热风门，包括风门框架和装配在所述风门框架内的至少一块风门叶片，所述的各风门叶片分别通过一根贯穿于风门框架和风门叶片设置的转轴及设于所述转轴端部的执行机构带动其转动，所述的风门叶片包括叶片框架和两块分别设于所述叶片框架两侧的叶片，在叶片框架内于所述的两块叶片之间填充绝热材料。
进一步的，在所述的叶片框架内于两块叶片之间设置有数块规则布置的叶片加固肋，且两块叶片分别固定在所述的叶片加固肋上。
进一步的，所述的绝热材料为硅酸铝纤维毡或高温玻璃棉。
进一步的，沿着每块风门叶片的四周于风门框架内侧分别设有一圈波浪形柔性密封垫片。
进一步的，在所述的风门框架与转轴之间采用带石墨盘根的密封盒进行密封。
进一步的，所述的风门框架与换热器连接法兰之间采用螺栓连接，并在正反连接法兰之间设置有柔性陶瓷垫片。
进一步的，所述的连接法兰与螺栓之间采用高温耐候胶泥进行二次密封。
本发明的有益效果是：
本发明带柔性密封的双叶片绝热风门通过将风门叶片设置为双叶片结构，并在内外两块叶片之间的风门框架内部填充绝热材料，可以有效减少换热器风门的热量损失；同时，通过在风门框架与风门叶片之间设置波浪形柔性密封垫片，从而能够保证风门叶片与风门框架之间的密封性能，有效避免内漏现象的发生；并且，通过在风门框架与转轴之间采用带石墨盘根的密封盒进行密封，从而能够保证转轴与风门框架之间的密封性能，有效避免外漏现象的发生；另外，通过在固定连接换热器与风门的正反连接法兰之间设置有柔性陶瓷垫片，并在连接法兰与螺栓之间采用高温耐候胶泥进行二次密封，还能有效保证连接法兰连接处的密封性能，从而进一步防止换热器工质发生泄漏；因此，本发明带柔性密封的双叶片绝热风门能够有效解决常规风门用于换热器时因热量损失大、密封性能差而导致的换热器升温及保温困难的技术问题，非常值得广泛推广与使用。
附图说明
图1是设于换热器上的现有风门的结构示意图；
图2是本发明带柔性密封的双叶片绝热风门的立体图；
图3是本发明带柔性密封的双叶片绝热风门的结构示意图；
图4是在风门框架与转轴之间设置密封盒的结构示意图；
图5是在换热器连接法兰与螺栓之间采用高温耐候胶泥进行二次密封的结构示意图；
图中标记为：1-风门框架，2-风门叶片，3-转轴，4-动力执行机构，5-绝热材料，6-密封盒，7-高温耐候胶泥，8-叶片，9-石墨盘根。
具体实施方式
下面结合附图和实施例对本发明进一步说明。
如图1-图5所示，本发明带柔性密封的双叶片绝热风门，包括矩形风门框架1和装配在所述风门框架1内且将风门框架1铺满的至少一块矩形风门叶片2，所述的各风门叶片2分别通过一根贯穿于风门框架1和风门叶片2设置的转轴3及设于所述转轴端部的动力执行机构4带动风门叶片2在风门框架1内转动，并实现对风门叶片2的开度调节，所述的风门叶片2包括矩形叶片框架和两块分别设于所述叶片框架两侧的矩形叶片，在叶片框架内于所述的两块叶片之间填充满绝热材料5，根据换热器工作温度的不同，所述的绝热材料5可以选用轻质硅酸铝纤维毡或高温玻璃棉等。
通过将风门叶片设置为双叶片结构，并在内外两块叶片之间的风门框架内部填充绝热材料，可以有效减少换热器风门的热量损失。
作为一种优选方案，在所述的叶片框架内于两块叶片之间设置有数块沿风门叶片轴向和横向规则布置的叶片加固肋，且两块叶片分别通过铆钉固定在所述的数块叶片加固肋上，同时，在叶片与加固肋外圈以6mm角焊缝进行焊接固定，从而增强风门叶片的整体强度。
作为一种优选方案，沿着每块风门叶片2的四周于风门框架1内侧分别设有一圈波浪形柔性密封垫片，从而保证风门叶片2与风门框架1之间的密封性能，有效避免内漏现象的发生。
作为一种优选方案，在所述的风门框架1与转轴3之间采用带石墨盘根的密封盒6进行密封，从而保证转轴3与风门框架1之间的密封性能，有效避免外漏现象的发生。
作为另一种优选方案，所述的风门框架与换热器连接法兰之间采用螺栓连接，并在正反连接法兰之间设置有柔性陶瓷垫片，当把螺栓拧紧后，再在所述的连接法兰与螺栓之间采用高温耐候胶泥7进行二次密封，从而保证连接法兰连接处的密封性能，能进一步防止工质发生泄漏。
此外，本发明风门的零部件全部采用316奥氏体不锈钢材制作而成，可以保证风门整体结构具有相同的热膨胀系数，从而保证风门整体结构的膨胀协调性、耐高温性以及耐腐蚀性。
本发明带柔性密封的双叶片绝热风门通过将风门叶片设置为双叶片结构，并在内外两块叶片之间的风门框架内部填充绝热材料，可以有效减少换热器风门的热量损失；同时，通过在风门框架与风门叶片之间设置波浪形柔性密封垫片，从而能够保证风门叶片与风门框架之间的密封性能，有效避免内漏现象的发生；并且，通过在风门框架与转轴之间采用带石墨盘根的密封盒进行密封，从而能够保证转轴与风门框架之间的密封性能，有效避免外漏现象的发生；另外，通过在固定连接换热器与风门的正反连接法兰之间设置有柔性陶瓷垫片，并在连接法兰与螺栓之间采用高温耐候胶泥进行二次密封，还能有效保证连接法兰连接处的密封性能，从而进一步防止换热器工质发生泄漏；由此可知，本发明带柔性密封的双叶片绝热风门能够有效解决常规风门用于换热器时因热量损失大、密封性能差而导致的换热器升温及保温困难的技术问题，非常值得广泛推广与使用。
应当理解的是，本发明的上述具体实施方式仅仅用于示例性说明或解释本发明的原理，而不构成对本发明的限制。因此，在不偏离本发明的精神和范围的情况下所做的任何修改、等同替换等，均应包含在本发明的保护范围之内。

Claims (7)

1.一种带柔性密封的双叶片绝热风门，包括风门框架（1）和装配在所述风门框架（1）内的至少一块风门叶片（2），所述的各风门叶片（2）分别通过一根贯穿于风门框架（1）和风门叶片（2）设置的转轴（3）及设于所述转轴端部的动力执行机构（4）带动其转动，其特征在于，所述的风门叶片（2）包括叶片框架和两块分别设于所述叶片框架两侧的叶片（8），在叶片框架内于所述的两块叶片（8）之间填充绝热材料（5）。
2.根据权利要求1所述的带柔性密封的双叶片绝热风门，其特征在于，在所述的叶片框架内于两块叶片（5）之间设置有数块规则布置的叶片加固肋，且两块叶片（5）分别固定在所述的叶片加固肋上。
3.根据权利要求1所述的带柔性密封的双叶片绝热风门，其特征在于，所述的绝热材料（5）为硅酸铝纤维毡或高温玻璃棉。
4.根据权利要求1所述的带柔性密封的双叶片绝热风门，其特征在于，沿着每块风门叶片（2）的四周于风门框架（1）内侧分别设有一圈波浪形柔性密封垫片。
5.根据权利要求1所述的带柔性密封的双叶片绝热风门，其特征在于，在所述的风门框架（1）与转轴（3）之间采用带石墨盘根（9）的密封盒（6）进行密封。
6.根据权利要求1所述的带柔性密封的双叶片绝热风门，其特征在于，所述的风门框架与换热器连接法兰之间采用螺栓连接，并在正反连接法兰之间设置有柔性陶瓷垫片。
7.根据权利要求6所述的带柔性密封的双叶片绝热风门，其特征在于，所述的连接法兰与螺栓之间采用高温耐候胶泥（7）进行二次密封。
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