CN103883830A - 顺灰立管用波纹膨胀节 - Google Patents

顺灰立管用波纹膨胀节 Download PDF

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CN103883830A
CN103883830A CN201410104760.7A CN201410104760A CN103883830A CN 103883830 A CN103883830 A CN 103883830A CN 201410104760 A CN201410104760 A CN 201410104760A CN 103883830 A CN103883830 A CN 103883830A
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bellows
pipe
wall
expansion joint
outer tube
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CN103883830B (zh
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刘华
拜龙珠
游庆国
张秀英
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JIANGSU SHUGUANG PRESSURE VESSEL Co Ltd
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JIANGSU SHUGUANG PRESSURE VESSEL 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
    • F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/075—Arrangements using an air layer or vacuum the air layer or the vacuum being delimited by longitudinal channels distributed around the circumference of a tube

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)
  • Thermal Insulation (AREA)

Abstract

本发明公开了一种顺灰立管用波纹膨胀节，它包括内管、支撑板、波纹管、外管、填料和隔套。立置的波纹管上下两端分别密封连接支撑板，外管从底层的支撑板内孔向上插入到波纹管内腔，内管从上层的支撑板内孔中插入到外管内腔，内管与外管间隙套合，内管和外管分别与配套的支撑板结合部连接构成以波纹管为主的补偿结构。波纹管内壁与外管外壁之间被固定连接的隔套分隔成两个空间，位于波纹管一侧的空间内衬填料构成外层隔热结构，隔套内壁与外管外壁相间处构成以空气为介质的内层隔热结构。本发明内置两道隔热层除能有效保护波纹管不过热，也避免波纹管与传输的颗粒物料接触，从结构上消除了不必要的磨损，大大提高波纹管使用寿命。

Description

顺灰立管用波纹膨胀节
技术领域
本发明涉及一种管道安全装置，具体地讲，本发明涉及一种膨胀节。该膨胀节配套在流化床锅炉炉膛进口之前的管道上，呈立置安装。
背景技术
流化床锅炉配套的返料器通常作固定安装，锅炉运行期间随着温度变化，管道系统内必然产生相应的热胀冷缩变形。正常的物理变形主要通过轴向推力来体现，轴向推力对返料器及管道系统构成安全威胁。工程中普遍在流化床锅炉配套的返料器与炉膛进口之间配置膨胀节，以此来吸收或补偿轴向推力及轴向位移。现有技术普遍应用的直通式波纹膨胀节柔性很好，具有动作灵活、补偿量大等特点，能够起到安全保障作用。但是，流化床锅炉工作温度高达850℃～1200℃，导致周边工况十分恶劣，再加上现有技术的直通式波纹膨胀节缺少对补偿元件波纹管的热保护结构，使薄壁的波纹管易受热，一旦环境温度超过波纹管许可工作温度，便造成失稳事故，从而导致波纹膨胀节丧失补偿功能。
发明内容
本发明主要针对现有技术的不足，提出一种结构简单、密封严密、耐高温、补偿灵活的顺灰立管用波纹膨胀节。
本发明通过下述技术方案实现技术目标。
顺灰立管用波纹膨胀节，它包括内管、支撑板、波纹管、外管、填料和隔套。所述波纹管为圆筒状，立置的波纹管上下两端分别密封连接支撑板。所述内管和外管均为圆形直管，外管从底层的支撑板内孔向上插入到波纹管内腔，内管从上层的支撑板内孔中插入到外管内腔，内管与外管间隙套合，内管和外管分别与配套的支撑板结合部连接构成以波纹管为主的补偿结构。其改进之处在于：波纹管内壁与外管外壁之间被固定连接的隔套分隔成两个空间，位于波纹管一侧的空间内衬填料构成外层隔热结构，隔套内壁与外管外壁相间处构成以空气为介质的内层隔热结构。
上述结构中应用的填料，是一种陶瓷纤维，该材质为柔性体，耐温850℃～1300℃。
本发明与现有技术相比，具有以下积极效果：
1、隔热结构简单、制作容易；
2、补偿结构中以隔套为界分成两道隔热层共同保护波纹管，隔热效果好；
3、内置两道隔热层除能有效防止波纹管过热外，也避免波纹管与传输的颗料物料直接接触，从结构上消除了不必要的磨损，大大提高波纹管的使用寿命，即提高膨胀节的使用寿命。
附图说明
图1是本发明结构半剖示意图。
具体实施方式
下面根据附图并结合实施例，对本发明作进一步说明。
图1所示的顺灰立管用波纹膨胀节安装在流化床锅炉配套的返料器与炉膛进口之间，它包括内管1、支撑板2、波纹管3、外管4、填料5和隔套6。所述波纹管3为圆筒状，立置的波纹管3上下两端分别密封连接支撑板2。所述内管1和外管4均为圆形直管，外管4从底层的支撑板2内孔向上插入到波纹管3内腔，内管1从上层的支撑板2内孔中插入到外管4内腔，内管1与外管4间隙套合，内管1和外管4分别与配套的支撑板2结合部连接构成以波纹管3为主的补偿结构。本发明在保持原有补偿功能的基础上，重点加强对波纹管3的隔热保护，有关结构上的改进主要体现在补偿结构中设有两层隔热结构，具体结构如下。
首先在波纹管3内壁与外管4外壁之间固定连接隔套6，由隔套6分隔成两个独立空间，位于波纹管3一侧的空间内衬填料5构成外层隔热结构，本实施例中的填料5是一种耐高温性能好，且为柔性的陶瓷纤维。内衬的填料5阻止内部的热向波纹管3传导，从而有效保护波纹管3不过热。另一方面在隔套6内壁与外管4外壁之间大间距空置，构成以空气为介质的内层隔热结构。内置两道隔热层除能有效保护波纹管3不过热，也避免波纹管3与传输的颗料物料直接接触，从结构上消除了不必要的磨损，大大提高波纹管3的使用寿命。波纹管3是膨胀节中最薄弱的构件，提高波纹管3的使用寿命就是提高膨胀节的使用寿命，由此可减少用户的配套成本，提高运行效率。

Claims (2)

1.一种顺灰立管用波纹膨胀节，它包括内管（1）、支撑板（2）、波纹管（3）、外管（4）、填料（5）和隔套（6）；所述波纹管（3）为圆筒状，立置的波纹管（3）上下两端分别密封连接支撑板（2）；所述内管（1）和外管（4）均为圆形直管，外管（4）从底层的支撑板（2）内孔向上插入到波纹管（3）内腔，内管（1）从上层的支撑板（2）内孔中插入到外管（4）内腔，内管（1）与外管（4）间隙套合，内管（1）和外管（4）分别与配套的支撑板（2）结合部连接构成以波纹管（3）为主的补偿结构；其特征在于：波纹管（3）内壁与外管（4）外壁之间被固定连接的隔套（6）分隔成两个空间，位于波纹管（3）一侧的空间内衬填料（5）构成外层隔热结构，隔套（6）内壁与外管（4）外壁相间处构成以空气为介质的内层隔热结构。
2.根据权利要求1所述的顺灰立管用波纹膨胀节，其特征在于：所述填料（5）为陶瓷纤维。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108119721A (zh) * 2018-01-23 2018-06-05 南通中远克莱芬船舶工程有限公司 一种除湿机专用轴向型波纹膨胀节

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB707833A (en) * 1951-07-12 1954-04-21 Titeflex Inc Metallic bellows particularly for pipe expansion joints
FR2266095A1 (en) * 1974-03-29 1975-10-24 Sema Composite concentric flexible sleeve joint for hot ducts - using abrasion resistant and insulating matls. in an expansion joint
DE3146305A1 (de) * 1981-11-23 1983-05-26 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Faltenbalgkompensator mit innenisolierung
DE3526481A1 (de) * 1985-07-24 1987-01-29 Witzenmann Metallschlauchfab Verbindung zweier rohrenden durch ein wellrohr
CN202215891U (zh) * 2011-09-02 2012-05-09 江苏申港锅炉有限公司 一种耐高温防磨型正压膨胀节
CN202521143U (zh) * 2012-03-31 2012-11-07 南通三创机械制造有限公司 煤粉膨胀节
CN203730993U (zh) * 2014-03-20 2014-07-23 江苏曙光压力容器有限公司 顺灰立管用波纹膨胀节

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB707833A (en) * 1951-07-12 1954-04-21 Titeflex Inc Metallic bellows particularly for pipe expansion joints
FR2266095A1 (en) * 1974-03-29 1975-10-24 Sema Composite concentric flexible sleeve joint for hot ducts - using abrasion resistant and insulating matls. in an expansion joint
DE3146305A1 (de) * 1981-11-23 1983-05-26 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Faltenbalgkompensator mit innenisolierung
DE3526481A1 (de) * 1985-07-24 1987-01-29 Witzenmann Metallschlauchfab Verbindung zweier rohrenden durch ein wellrohr
CN202215891U (zh) * 2011-09-02 2012-05-09 江苏申港锅炉有限公司 一种耐高温防磨型正压膨胀节
CN202521143U (zh) * 2012-03-31 2012-11-07 南通三创机械制造有限公司 煤粉膨胀节
CN203730993U (zh) * 2014-03-20 2014-07-23 江苏曙光压力容器有限公司 顺灰立管用波纹膨胀节

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108119721A (zh) * 2018-01-23 2018-06-05 南通中远克莱芬船舶工程有限公司 一种除湿机专用轴向型波纹膨胀节

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