WO2019019269A1 - 一种法兰式蒸汽伴行管及其安装方法 - Google Patents

一种法兰式蒸汽伴行管及其安装方法 Download PDF

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Publication number
WO2019019269A1
WO2019019269A1 PCT/CN2017/100645 CN2017100645W WO2019019269A1 WO 2019019269 A1 WO2019019269 A1 WO 2019019269A1 CN 2017100645 W CN2017100645 W CN 2017100645W WO 2019019269 A1 WO2019019269 A1 WO 2019019269A1
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WIPO (PCT)
Prior art keywords
sleeve
tube
carrier
steam
pipe
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PCT/CN2017/100645
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English (en)
French (fr)
Inventor
包霖
罗志农
曾芸先
江海涛
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广船国际有限公司
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Application filed by 广船国际有限公司 filed Critical 广船国际有限公司
Publication of WO2019019269A1 publication Critical patent/WO2019019269A1/zh

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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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation

Definitions

  • the invention relates to the technical field of pipeline heating and heat preservation, in particular to a flange type steam accompanying pipe and a mounting method thereof.
  • the carrier tube is flanged.
  • a steam-assisted capillary is placed on the outside of the carrier tube, and then the accompanying tube and capillary tube are placed.
  • the outer surface is covered with thermal mineral wool. Due to the poor waterproof performance, the steam-assisted insulating tube is only suitable for indoor use.
  • the carrying tube adopts the butt welding connection type. Before installation, the steam accompanying capillary is placed outside the carrying tube. Then, the insulating material is filled and a protective tube is placed outside the insulating material, and then the butt welding is connected on the ship.
  • the gap between the butted portions is filled with an insulating material at the site; the form of the steam accompanying insulating tube can be used for the open air. Environment, but due to its use of the butt joint type, the carrier tube of the butt weld can not be used as a protective coating, and the carrier tube generally needs to use stainless steel pipe with better corrosion resistance, resulting in high production cost of the steam accompanying insulation pipe.
  • An object of the present invention is to provide a flange type steam accompanying pipe which is low in production cost and good in sealing property.
  • Another object of the present invention is to provide a method of installing a flange type steam accompanying pipe which has a good sealing property.
  • a flanged steam companion tube comprising a carrier tube and a flange disposed at an end of the carrier tube, the carrier tube being peripherally provided with a protective tube and a carrier sleeve, the carrier tube sleeve being disposed along a lengthwise direction having opposite first and second ends, the first end being welded to the flange, the second end being sealingly coupled to the protective tube, and between the protective tube and the carrier tube
  • the carrier sleeve and the carrier tube are filled with an insulation layer, and the outer circumference of the carrier tube is provided with a plurality of steam pipes extending along the length thereof, and corresponding to the steam pipe, the outer circumference of the carrier sleeve
  • a plurality of steam jackets communicating with the carrier sleeve are protruded, and an end of the steam pipe extends through the steam jacket to an exterior of the carrier sleeve.
  • the diameter of the first end is smaller than the diameter of the second end
  • the steam pipe sleeve is inclined toward the first end
  • the axis of the steam pipe sleeve The angle between the axis of the carrier sleeve is less than 90°.
  • the diameter of the second end is smaller than the diameter of the protection pipe, and the second end is sealingly connected to the protection pipe through a heat shrink sleeve.
  • the heat shrink sleeve includes a first connecting sleeve, a second connecting sleeve and an intermediate connecting sleeve, and the first connecting sleeve passes through the intermediate connecting sleeve and the intermediate connecting sleeve
  • the second connecting sleeve is connected, the first connecting sleeve is disposed outside the carrying sleeve and is bonded to the outer wall of the carrying sleeve by heat shrinkage, and the second connecting sleeve is disposed outside the protective tube and passes through The heat shrinkage is bonded to the outer wall of the protective tube.
  • the carrier sleeve includes a first sleeve and a second sleeve that are coaxially connected, and the first sleeve is a tapered tube, the first The end is the small diameter end of the first sleeve, the diameter of the large diameter end of the first sleeve is equal to the diameter of the second sleeve, and the steam sleeve is disposed on the first sleeve and Adjacent to the second sleeve.
  • one end of the first connecting sleeve extends to the first sleeve and the other end extends to the first section along the axial direction of the carrier sleeve Two tube sets.
  • the first pipe sleeve and the second pipe sleeve are both stainless steel pipes, and the first pipe sleeve and the second pipe sleeve are integrally forged and formed. .
  • a plurality of the steam pipe intervals are provided on the outer circumference of the carrier pipe and fixed by fasteners.
  • the carrying pipe sleeve is provided with a connecting hole corresponding to the steam pipe sleeve, and the steam pipe sleeve is welded to the connecting hole.
  • a method of installing the flanged steam companion tube comprising the steps of:
  • Step S10 providing the carrier tube, applying a protective layer on the inner and outer walls of the carrier tube, and then welding the end of the carrier tube and the first end of the carrier sleeve to the flange in sequence;
  • Step S20 providing a steam pipe on the outer side of the carrier pipe, respectively pulling the two ends of the steam pipe from the steam pipe sleeve on the carrier pipe sleeve, and then binding the steam pipe to the carrier pipe ;
  • Step S30 arranging a protective tube on the outside of the carrying tube and sealing the one end of the protective tube, and then injecting liquid foaming into the gap between the protective tube and the carrying tube from the other end. Insulation material;
  • Step S40 after the heat insulating material is foamed and hardened, the carrier sleeve and the protection tube are sealed and connected by a heat shrink sleeve;
  • Step S50 connecting two adjacent flange type steam accompanying pipes through flanges, and connecting two adjacent steam pipes by using a snap sleeve.
  • the invention has the beneficial effects that a steam pipe sleeve which is inserted and matched with a steam pipe attached to the outer circumference of the carrier pipe is protruded from the outer circumference of the carrier pipe and adjacent to the end thereof, so as to realize the steam pipe Rigid positioning, at the same time, one end of the carrier sleeve is sealed with the protection tube, and the other end is welded to the flange, so as to prevent seawater, rainwater, etc. from penetrating into the insulation layer, preventing corrosion of the flange type steam accompanying tube and reducing the flange.
  • Flange type steam accompanying pipe of this embodiment The structure is simple, the production cost is low, and the material of the carrier sleeve is low, and the steel pipe of the ordinary material can meet the requirements of the open environment.
  • FIG. 1 is a schematic structural view of a flange type steam accompanying pipe according to an embodiment of the present invention.
  • carrier tube 100, carrier tube; 200, flange; 300, protection tube; 400, carrier sleeve; 410, first sleeve; 420, second sleeve; 500, insulation layer; 600, steam tube; 700, steam tube cover 800, heat shrink sleeve; 810, first connecting sleeve; 820, second connecting sleeve; 830, intermediate connecting sleeve; 900, fasteners.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the term "fixed” is to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or a mechanical connection, unless otherwise explicitly defined and defined. It is an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two components or the interaction of two components.
  • an intermediate medium which can be the internal connection of two components or the interaction of two components.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "on” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
  • the first feature "under” the second feature includes the first feature directly below and below the second feature, or merely indicating that the first feature level is less than the second feature.
  • a flange type steam accompanying pipe includes a carrier pipe 100 and a flange 200 disposed at an end of the carrier pipe 100.
  • the carrier pipe 100 is provided with a protection pipe 300 and a carrier pipe sleeve 400 at the outer periphery thereof.
  • the carrier sleeve 400 has opposite first and second ends along its length, the first end being welded to the flange 200, the second end being sealingly coupled to the protective tube 300, the protective tube 300 and the carrier tube 100, and carrying
  • the sleeve 400 and the carrier tube 100 are filled with a heat insulating layer 500.
  • the outer circumference of the carrier tube 100 is provided with a plurality of steam tubes 600 extending along the longitudinal direction thereof.
  • the outer circumference of the carrying tube sleeve 400 is convexly provided.
  • a steam jacket 700 in communication with the carrier sleeve 400 extends through the steam jacket 700 to the exterior of the carrier sleeve 400.
  • a steam sleeve 700 that is inserted into the steam tube 600 attached to the outer circumference of the carrier tube 100 is protruded from the carrier sleeve 400,
  • one end of the carrying pipe sleeve 400 is sealingly connected with the protective pipe 300, and the other end is welded to the flange 200, thereby preventing seawater, rainwater, etc. from penetrating into the interior of the heat insulating layer 500, and preventing the flange type.
  • Corrosion of the steam companion tube reduces the service life of the flanged steam companion tube.
  • the flange type steam accompanying pipe of the present embodiment has a simple structure, low production cost, and low requirements on the material of the carrier sleeve 400, and the steel pipe of the ordinary material can meet the requirements of the open environment.
  • the carrier tube 100 and the steam tube 600 are all made of bronze material, have high strength, are resistant to high temperature, and have high corrosion resistance, and can be adapted to transport various media.
  • the inner and outer walls of the carrier tube 100 can be pre-coated to ensure that the carrier tube 100 can meet the transportation requirements of various media.
  • the flange type steam accompanying pipe of the present embodiment is applied to an open air area and needs to be heated and insulated.
  • the carrier sleeve 400 has opposite first and second ends along its length.
  • the carrier sleeve 400 and the method are designed by designing the diameter of the first end of the carrier sleeve 400 to be smaller than the diameter of the second end thereof.
  • the dimensions of the blue 300 are matched such that the carrier sleeve 100 is seamlessly welded to the flange 200; the steam jacket 700 is inclined toward the first end, and the angle between the axis of the steam jacket 700 and the axis of the carrier sleeve 400 Less than 90° to avoid excessive bending of the steam tube 600 at the steam jacket 700 to affect its service life.
  • the angle between the axis of the steam jacket 700 and the axis of the carrier sleeve 100 is 15° to 45°, so that the steam tube 600 extends as gently as possible through the steam jacket 700 to the outside of the carrier sleeve 100 and the steam
  • the steam tube 200 of the generating device or other flanged steam accompanying pipe is connected.
  • the diameter of the second end is smaller than the diameter of the protective tube 300, and the second end is sealingly connected to the protective tube 300 through the heat shrink sleeve 800.
  • the heat shrink sleeve 800 is made of PVC material, and the second end and the protection tube 300 are respectively inserted and matched with the two ends of the heat shrink sleeve 800. After the heat shrink sleeve 800 is heated and shrunk, the heat shrink sleeve 800 is heat-shrinkable. The two ends are respectively bonded to the second end and the protective tube 300 to achieve a sealed connection.
  • the heat shrink sleeve 800 includes a first connecting sleeve 810, a second connecting sleeve 820 and an intermediate connecting sleeve 830, and the first connecting sleeve 810 passes through the intermediate connecting sleeve 830.
  • the first connecting sleeve 810 is sleeved outside the carrying sleeve 400 and is bonded to the outer wall of the carrying sleeve 400 by heat shrinkage.
  • the second connecting sleeve 820 is sleeved outside the protective tube 300 and heated by heating. The shrinkage is bonded to the outer wall of the protective tube 300.
  • the carrying sleeve 400 is inserted into the first connecting sleeve 810, and the protective tube 300 is inserted into the second connecting sleeve 820, and respectively subjected to heat shrinkage treatment to achieve a sealed connection.
  • the carrier sleeve 400 includes a first sleeve 410 and a second sleeve 420 that are coaxially connected.
  • the first sleeve 410 is a tapered tube, and the first end is the first sleeve 410.
  • the small diameter end, the diameter of the large diameter end of the first sleeve 410 is equal to the diameter of the second sleeve 420, and the steam sleeve 700 is disposed on the first sleeve 410 and adjacent to the second sleeve 420.
  • the carrier sleeve 400 is designed as a two-stage structure, and the first connecting sleeve 810 can be directly sleeved on the second sleeve 420 to facilitate the processing of the first connecting sleeve 810 to improve the flange steam accompanying Tube production efficiency.
  • one end of the first connecting sleeve 810 extends to the first sleeve 410 and the other end extends to the second sleeve 420 along the axial direction of the carrier sleeve 400.
  • one end of the first connecting sleeve 810 extends to the first sleeve 410, which can improve the bonding strength between the carrying sleeve 400 and the first connecting sleeve 810 after heating and shrinking, thereby enhancing the carrying sleeve 400 and the first The sealing effect between the sleeves 810.
  • the outer circumference of the first sleeve 410 and/or the second sleeve 420 is recessed with a plurality of limiting recesses.
  • the inner circumference of the first connecting sleeve 810 is disposed to cooperate with the limiting recess.
  • a plurality of limiting protrusions may be annularly protruded on the outer circumference of the first sleeve 410 and/or the second sleeve 420.
  • the inner circumference of the first connecting sleeve 810 is provided with The limiting groove matched by the limiting convex portion, the limiting groove is engaged with the limiting convex portion and then bonded by heating shrinkage, and the sealing effect between the carrying sleeve 400 and the first connecting sleeve 810 can also be improved.
  • first sleeve 410 and the second sleeve 420 are both stainless steel tubes, and the first sleeve 410 and the second sleeve 420 are integrally forged to reduce the difficulty in manufacturing the carrier sleeve 400 while preventing carrying The sleeve 400 rusts during use and further enhances the sealing effect.
  • first sleeve 410 and the second sleeve 420 can also be formed by bending a stainless steel sheet and then welding.
  • the diameter of the carrier tube 100 is much larger than the diameter of the steam tube 600.
  • it is usually arranged at intervals outside the carrier tube 100.
  • a steam tube 600 extending along the longitudinal direction of the carrier tube 100, correspondingly, a plurality of steam tubes 700 are protruded from the outer circumference of the carrier sleeve 400.
  • a plurality of steam tubes 600 are spaced apart from each other on the outer circumference of the carrier tube 100 and secured by fasteners 900.
  • the fastener 900 is a stainless steel cable tie, and may also be another buckle structure.
  • the junction of the steam jacket 700 and the carrier sleeve 400 is on the same radial plane to provide a more aesthetic appearance of the flanged steam companion.
  • the carrying sleeve 400 is provided with a connecting hole corresponding to the steam tube sleeve 700, and the steam tube sleeve 700 is welded to the connecting hole, wherein the steam tube sleeve 700 is made of stainless steel.
  • the carrier sleeve 400 is integrally cast with the steam jacket 700.
  • the heat insulating layer 500 is a PUR foam (rigid polyurethane foam), which has a small thermal conductivity and a good heat insulating effect.
  • the protection tube 300 is made of PVC, which has light weight and good insulation protection effect.
  • the flange type steam accompanying pipe of the invention adopts ordinary material steel for the carrier tube 100 and the flange 200
  • the tube can meet the design and use requirements, avoiding the large-scale use of the stainless steel tube. Under the same weight, the cheapest stainless steel is at least 6 times the price of the ordinary steel tube. Therefore, the flange type steam accompanying the invention is used.
  • the medium transportation of the pipe can save a lot of production cost of the flange type steam accompanying pipe; at the same time, all the protection pipes 300 are completed in the production workshop due to the flange connection, avoiding the welding, grinding and post-protection of a large number of pipes on the site. Repair work of the tube 300.
  • Embodiments of the present invention also provide a method of installing the flanged steam accompanying pipe, comprising the following steps:
  • Step S10 providing a carrier tube 100, applying a protective layer on the inner and outer walls of the carrier tube 100, and then welding the end of the carrier tube 100 and the first end of the carrier sleeve 400 to the flange 200 in sequence;
  • the inner wall of the carrier tube 100 is coated with paint, and the outer wall of the carrier tube 100 is coated with an anti-rust primer;
  • Step S20 a steam pipe 600 is disposed on the outer side of the carrier pipe 100, and both ends of the steam pipe 600 are respectively pulled out from the steam pipe sleeve 700 on the carrier pipe sleeve, and then the steam pipe 600 is bundled and fixed on the carrier pipe 100;
  • Step S30 the protective tube 300 is sheathed on the outside of the carrying tube 100, and one end of the protective tube 300 is sealed, and then the liquid foamable insulating material is poured into the gap between the protective tube 300 and the carrying tube 100 from the other end.
  • the infiltrated thermal insulation material is PUR, which belongs to a liquid foamable thermal insulation material, and a quantitative liquid PUR is poured to fill a part of the gap between the protection tube 300 and the carrier tube 100, and then heated to make it After the foaming and hardening, the insulating layer 500 is formed, and the gap between the protective tube 300 and the carrier tube 100 can be filled.
  • Step S40 after the insulation material is foamed and hardened, the heat shrink sleeve 800 is used to seal and connect the carrier sleeve 400 and the protection tube 300;
  • Step S50 connecting two adjacent flange type steam companion tubes through the flange 200, and connecting the adjacent two steam tubes 600 by using a snap sleeve.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种法兰式蒸汽伴行管，包括运载管（100）和设置在运载管（100）末端的法兰（200），运载管（100）外周设置有保护管（300）和运载管套（400），运载管套（400）一端与法兰（200）焊接，另一端与保护管（300）密封连接，保护管（300）、运载管套（400）与运载管（100）之间均填充有保温层（500），运载管（100）的外周设置有若干沿其长度方向延伸的蒸汽管（600），运载管套（400）外周凸设有若干与运载管套（400）连通的蒸汽管套（700），蒸汽管（600）穿过蒸汽管套（700）延伸至运载管套（400）外部。该法兰式蒸汽伴行管密封性好，寿命长，结构简单，成本低，材质要求低。

Description

一种法兰式蒸汽伴行管及其安装方法 技术领域
本发明涉及管道加热保温技术领域，具体涉及一种法兰式蒸汽伴行管及其安装方法。
背景技术
目前的蒸汽伴行绝缘管的设计型式主要有两种：一种是运载管采用法兰连接型式，当运载管安装连接完毕后，在其外侧设置蒸汽伴行毛细管，然后在伴行管及毛细管外面包覆保温矿棉，由于防水性能比较差，该蒸汽伴行绝缘管只适合在室内使用；另一种是运载管采用对焊连接型式，在安装前先在运载管外侧设置蒸汽伴行毛细管，然后做绝缘材料填充处理及在绝缘材料外设置保护管，再在船上对焊连接，最后在现场采用绝缘材料补填对接部分之间的间隙；该形式的蒸汽伴行绝缘管可使用于露天环境，但由于其采用对焊连接型式，对焊处的运载管无法作保护涂层，而且运载管一般需要采用耐腐蚀性能较好的不锈钢管材，导致蒸汽伴行绝缘管的生产成本很高。
发明内容
本发明的一个目的在于提供一种法兰式蒸汽伴行管，其生产成本低，且密封性好。
本发明的另一个目的在于提供一种法兰式蒸汽伴行管的安装方法，安装好的法兰式蒸汽伴行管具有良好的密封性。
为达此目的，本发明采用以下技术方案：
一方面，提供一种法兰式蒸汽伴行管，包括运载管和设置在所述运载管末端的法兰，所述运载管外周设置有保护管和运载管套，所述运载管套沿其长度方向具有相对的第一端和第二端，所述第一端与所述法兰焊接，所述第二端与所述保护管密封连接，所述保护管与所述运载管之间以及所述运载管套与所述运载管之间均填充有保温层，所述运载管的外周设置有若干沿其长度方向延伸的蒸汽管，与所述蒸汽管对应地，所述运载管套外周凸设有若干与所述运载管套连通的蒸汽管套，所述蒸汽管的末端穿过所述蒸汽管套延伸至运载管套外部。
作为法兰式蒸汽伴行管的一种优选技术方案，所述第一端的直径小于所述第二端的直径，所述蒸汽管套朝向所述第一端倾斜，所述蒸汽管套的轴线与所述运载管套的轴线之间的夹角小于90°。
作为法兰式蒸汽伴行管的一种优选技术方案，所述第二端的直径小于所述保护管的直径，所述第二端通过热缩套与所述保护管密封连接。
作为法兰式蒸汽伴行管的一种优选技术方案，所述热缩套包括第一连接套、第二连接套和中间连接套，所述第一连接套通过所述中间连接套与所述第二连接套连接，所述第一连接套套设在所述运载管套外并通过加热收缩与所述运载管套的外壁粘接，所述第二连接套套设在所述保护管外并通过加热收缩与所述保护管的外壁粘接。
作为法兰式蒸汽伴行管的一种优选技术方案，所述运载管套包括同轴连接的第一管套和第二管套，所述第一管套为锥形管，所述第一端即为所述第一管套的小直径端，所述第一管套的大直径端的直径等于所述第二管套的直径，所述蒸汽管套设置在所述第一管套上且邻近所述第二管套。
作为法兰式蒸汽伴行管的一种优选技术方案，沿所述运载管套的轴线方向，所述第一连接套的一端延伸至所述第一管套上，另一端延伸至所述第二管套上。
作为法兰式蒸汽伴行管的一种优选技术方案，所述第一管套和所述第二管套均为不锈钢管，且所述第一管套和所述第二管套一体锻压成型。
作为法兰式蒸汽伴行管的一种优选技术方案，若干所述蒸汽管间隔均设在所述运载管的外周并通过紧固件固定。
作为法兰式蒸汽伴行管的一种优选技术方案，所述运载管套上开设有与所述蒸汽管套相对应的连接孔，所述蒸汽管套与所述连接孔焊接。
另一方面，提供一种所述的法兰式蒸汽伴行管的安装方法，包括以下步骤：
步骤S10、提供所述运载管，在所述运载管的内、外壁涂覆保护层，然后将所述运载管的末端和运载管套的第一端依次与法兰焊接；
步骤S20、在所述运载管的外侧设置蒸汽管，将所述蒸汽管的两端分别从运载管套上的蒸汽管套中拉出，然后将所述蒸汽管绑扎固定在所述运载管上；
步骤S30、在所述运载管的外部套设保护管并对所述保护管的一端进行密封处理，然后由另一端向所述保护管与所述运载管之间的间隙中灌注液态可发泡的保温材料；
步骤S40、当所述保温材料发泡并硬化后，采用热缩套密封连接所述运载管套和所述保护管；
步骤S50、将相邻两个法兰式蒸汽伴行管通过法兰连接，并采用卡接套头连接相邻两个所述蒸汽管。
本发明的有益效果：通过在运载管的外周且邻近其末端设置运载管套，在运载管套上凸设与附着于运载管外周的蒸汽管插接配合的蒸汽管套，以实现对蒸汽管刚性定位，同时将运载管套的一端与保护管密封连接，另一端与法兰焊接连接，从而可以避免海水、雨水等渗入保温层内部，防止法兰式蒸汽伴行管发生腐蚀而降低法兰式蒸汽伴行管的使用寿命。本实施例的法兰式蒸汽伴行管 的结构简单，生产成本低，对运载管套的材质的要求低，其采用普通材质的钢管即可满足露天环境的使用要求。
附图说明
图1为本发明实施例的法兰式蒸汽伴行管的结构示意图。
图中：
100、运载管；200、法兰；300、保护管；400、运载管套；410、第一管套；420、第二管套；500、保温层；600、蒸汽管；700、蒸汽管套；800、热缩套；810、第一连接套；820、第二连接套；830、中间连接套；900、紧固件。
具体实施方式
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
在本发明的描述中，需要理解的是，术语“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本发明的描述中，除非另有明确的规定和限定，术语“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个部件内部的连通或两个部件的相互作用关系。对于本领域的普通技术 人员而言，可以具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征之“上”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征之“下”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
如图1所示，本发明的实施例中，法兰式蒸汽伴行管包括运载管100和设置在运载管100末端的法兰200，运载管100外周设置有保护管300和运载管套400，运载管套400沿其长度方向具有相对的第一端和第二端，第一端与法兰200焊接，第二端与保护管300密封连接，保护管300与运载管100之间以及运载管套400与运载管100之间均填充有保温层500，运载管100的外周设置有若干沿其长度方向延伸的蒸汽管600，与蒸汽管600对应地，运载管套400外周凸设有若干与运载管套400连通的蒸汽管套700，蒸汽管600的末端穿过蒸汽管套700延伸至运载管套400外部。本实施例中，通过在运载管100的外周且邻近其末端设置运载管套400，在运载管套400上凸设与附着于运载管100外周的蒸汽管600插接配合的蒸汽管套700，以实现对蒸汽管600刚性定位，同时将运载管套400的一端与保护管300密封连接，另一端与法兰200焊接连接，从而可以避免海水、雨水等渗入保温层500内部，防止法兰式蒸汽伴行管发生腐蚀而降低法兰式蒸汽伴行管的使用寿命。本实施例的法兰式蒸汽伴行管的结构简单，生产成本低，对运载管套400的材质的要求低，其采用普通材质的钢管即可满足露天环境的使用要求。
对于远距离输送介质的情况，需要将多个所述法兰式蒸汽伴行管通过法兰 200连接，此时，相邻两个法兰式蒸汽伴行管的蒸汽管600通过卡套接头进行连接。
本实施例中，运载管100及蒸汽管600均为青铜材质，具有高强度，其耐高温，且耐腐蚀性强，可以适应多种介质的运输。
本实施例中，法兰式蒸汽伴行管在进行安装之间，可以对运载管100的内外壁预先做好涂层保护，以使运载管100能满足各种介质的运载要求。
本实施例中，法兰式蒸汽伴行管的所有绝缘和保护工作均可在车间阶段完成，大大减少了安装到目标设备如船舶上的工作量及周期。
本实施例的法兰式蒸汽伴行管适用于露天区域且需要做加热保温处理的管路系统上。
由于法兰200是标准件，其尺寸与运载管100相匹配，而设置在运载管100外的保护管300的直径相对较大，其无法实现与法兰300无缝连接。运载管套400沿其长度方向具有相对的第一端和第二端，本实施例通过将运载管套400的第一端的直径设计为小于其第二端的直径，使运载管套400与法兰300的尺寸相匹配，从而使运载管套100与法兰200实现无缝焊接；蒸汽管套700朝向第一端倾斜，蒸汽管套700的轴线与运载管套400的轴线之间的夹角小于90°，以避免蒸汽管600在蒸汽管套700处过度弯折而影响其使用寿命。
优选地，蒸汽管套700的轴线与运载管套100的轴线之间的夹角为15°～45°，以使蒸汽管600尽量平缓地经蒸汽管套700延伸至运载管套100外部与蒸汽发生装置或者其他法兰式蒸汽伴行管的蒸汽管200连接。
第二端的直径小于保护管300的直径，第二端通过热缩套800与保护管300密封连接。本实施例中，热缩套800为PVC材质，第二端和保护管300分别与热缩套800的两端插接配合，对热缩套800进行加热收缩处理后，热缩套800 的两端分别与第二端和保护管300粘接，从而实现密封连接。
具体地，为适应直径不等的运载管套400和保护管300，热缩套800包括第一连接套810、第二连接套820和中间连接套830，第一连接套810通过中间连接套830与第二连接套820连接，第一连接套810套设在运载管套400外并通过加热收缩与运载管套400的外壁粘接，第二连接套820套设在保护管300外并通过加热收缩与保护管300的外壁粘接。运载管套400与第一连接套810插接，保护管300与第二连接套820插接，且分别通过加热收缩处理以实现密封连接。
作为本发明一优选的实施方式，运载管套400包括同轴连接的第一管套410和第二管套420，第一管套410为锥形管，第一端即为第一管套410的小直径端，第一管套410的大直径端的直径等于第二管套420的直径，蒸汽管套700设置在第一管套410上且邻近第二管套420。本实施例将运载管套400设计为两段式结构，第一连接套810可以直接套设在第二管套420上，方便第一连接套810的加工处理，以提高法兰式蒸汽伴行管的生产效率。
作为本发明另一优选的实施方式，沿运载管套400的轴线方向，第一连接套810的一端延伸至第一管套410上，另一端延伸至第二管套420上。本实施例中，第一连接套810的一端延伸至第一管套410上，可以提高运载管套400与第一连接套810加热收缩后的粘接强度，从而增强运载管套400与第一连接套810之间的密封效果。
进一步地，第一管套410和/或第二管套420的外周环形凹设有若干限位凹槽，对应地，第一连接套810的内周设置有与所述限位凹槽相配合的限位凸部，限位凹槽与限位凸部卡接后，再通过加热收缩粘接，可以进一步提高运载管套400与第一连接套810之间的密封效果。
在其他的实施例中，也可以在第一管套410和/或第二管套420的外周环形凸设有若干限位凸部，对应地，第一连接套810的内周设置有与所述限位凸部相配合的限位凹槽，限位凹槽与限位凸部卡接后再通过加热收缩粘接，同样可以提高运载管套400与第一连接套810之间的密封效果。
本实施例中，第一管套410和第二管套420均为不锈钢管，且第一管套410和第二管套420一体锻压成型，以降低运载管套400的制作难度，同时防止运载管套400在使用过程中生锈，并进一步提高密封效果。本实施例中，第一管套410和第二管套420也可以通过采用不锈钢板材弯卷然后焊接成型。
本实施例中，运载管100的直径远大于蒸汽管600的直径，为使蒸汽管600内的蒸汽对运载管100内的运输流体具有良好的加热效果，通常会在运载管100外间隔设置多个沿运载管100长度方向延伸的蒸汽管600，对应地，在运载管套400的外周间隔凸设有若干蒸汽管套700。若干蒸汽管600间隔均设在运载管100的外周并通过紧固件900固定。其中，紧固件900为不锈钢扎带，也可以是其他卡扣结构。
蒸汽管套700与运载管套400的连接处位于同一径向面，以使法兰式蒸汽伴行管的外观更为美观。
在本发明的一个实施例中，运载管套400上开设有与蒸汽管套700相对应的连接孔，蒸汽管套700与连接孔焊接，其中，蒸汽管套700为不锈钢材质。
在本发明的另一个实施例中，运载管套400与蒸汽管套700一体浇铸成型。
本实施例中，保温层500为PUR泡沫(硬质聚氨酯泡沫塑料)，其导热系数小，具有良好的保温效果。
本实施例中，保护管300为PVC材质，其质量轻，且绝缘保护效果好。
本发明的法兰式蒸汽伴行管，其运载管100和法兰200采用普通材质的钢 管就能满足设计及使用要求，避免了不锈钢管的大量使用，在相同重量下，最便宜的不锈钢的价格至少是普通钢管的价格的6倍，因此，采用本发明的法兰式蒸汽伴行管进行介质输送，可以大量节省法兰式蒸汽伴行管的生产成本；同时，由于采用法兰连接，所有的保护管300均在生产车间完成，避免现场大量管子的对焊、打磨及后期保护管300的修补工作。
本发明的实施例还提供一种所述的法兰式蒸汽伴行管的安装方法，包括以下步骤：
步骤S10、提供运载管100，在运载管100的内、外壁涂覆保护层，然后将运载管100的末端和运载管套400的第一端依次与法兰200焊接；
其中，运载管100的内壁涂覆油漆，运载管100的外壁涂覆有防锈底漆；
在焊接前需要根据设计要求选用适当规格及长度的运载管100和蒸汽管400，并将其按设计要求弯制好；焊接完成后需要进行打磨及密封性试验；
步骤S20、在运载管100的外侧设置蒸汽管600，将蒸汽管600的两端分别从运载管套上的蒸汽管套700中拉出，然后将蒸汽管600绑扎固定在运载管100上；
步骤S30、在运载管100的外部套设保护管300并对保护管300的一端进行密封处理，然后由另一端向保护管300与运载管100之间的间隙中灌注液态可发泡的保温材料，以形成保温层500；灌注的保温材料为PUR，属于一种液态可发泡保温材料，将定量的液态PUR灌注以填充保护管300与运载管100之间的部分间隙中，然后加热使其发泡，硬化之后形成保温层500，可以填充满保护管300与运载管100之间的间隙。
步骤S40、当保温材料发泡并硬化后，采用热缩套800密封连接运载管套400和保护管300；
步骤S50、将相邻两个法兰式蒸汽伴行管通过法兰200连接，并采用卡接套头连接相邻两个蒸汽管600。
采用螺栓固定运载管100之后，需要按照设计要求进行安装密封性试验。
需要声明的是，上述具体实施方式仅仅为本发明的较佳实施例及所运用技术原理，在本发明所公开的技术范围内，任何熟悉本技术领域的技术人员所容易想到的变化或替换，都应涵盖在本发明的保护范围内。
以上通过具体的实施例对本发明进行了说明，但本发明并不限于这些具体的实施例。本领域技术人员应该明白，还可以对本发明做各种修改、等同替换、变化等等。但是，这些变换只要未背离本发明的精神，都应在本发明的保护范围之内。另外，本申请说明书和权利要求书所使用的一些术语并不是限制，仅仅是为了便于描述。此外，以上多处的“一个实施例”、“另一个实施例”等表示不同的实施例，当然也可以将其全部或部分结合在一个实施例中。

Claims (10)

  1. 一种法兰式蒸汽伴行管，其特征在于，包括运载管和设置在所述运载管末端的法兰，所述运载管外周设置有保护管和运载管套，所述运载管套沿其长度方向具有相对的第一端和第二端，所述第一端与所述法兰焊接，所述第二端与所述保护管密封连接，所述保护管与所述运载管之间以及所述运载管套与所述运载管之间均填充有保温层，所述运载管的外周设置有若干沿其长度方向延伸的蒸汽管，与所述蒸汽管对应地，所述运载管套外周凸设有若干与所述运载管套连通的蒸汽管套，所述蒸汽管的末端穿过所述蒸汽管套延伸至运载管套外部。
  2. 根据权利要求1所述的法兰式蒸汽伴行管，其特征在于，所述第一端的直径小于所述第二端的直径，所述蒸汽管套朝向所述第一端倾斜，所述蒸汽管套的轴线与所述运载管套的轴线之间的夹角小于90°。
  3. 根据权利要求2所述的法兰式蒸汽伴行管，其特征在于，所述第二端的直径小于所述保护管的直径，所述第二端通过热缩套与所述保护管密封连接。
  4. 根据权利要求3所述的法兰式蒸汽伴行管，其特征在于，所述热缩套包括第一连接套、第二连接套和中间连接套，所述第一连接套通过所述中间连接套与所述第二连接套连接，所述第一连接套套设在所述运载管套外并通过加热收缩与所述运载管套的外壁粘接，所述第二连接套套设在所述保护管外并通过加热收缩与所述保护管的外壁粘接。
  5. 根据权利要求4所述的法兰式蒸汽伴行管，其特征在于，所述运载管套包括同轴连接的第一管套和第二管套，所述第一管套为锥形管，所述第一端即为所述第一管套的小直径端，所述第一管套的大直径端的直径等于所述第二管套的直径，所述蒸汽管套设置在所述第一管套上且邻近所述第二管套。
  6. 根据权利要求5所述的法兰式蒸汽伴行管，其特征在于，沿所述运载管 套的轴线方向，所述第一连接套的一端延伸至所述第一管套上，另一端延伸至所述第二管套上。
  7. 根据权利要求5所述的法兰式蒸汽伴行管，其特征在于，所述第一管套和所述第二管套均为不锈钢管，且所述第一管套和所述第二管套一体锻压成型。
  8. 根据权利要求1至7任一项所述的法兰式蒸汽伴行管，其特征在于，若干所述蒸汽管间隔均设在所述运载管的外周并通过紧固件固定。
  9. 根据权利要求8所述的法兰式蒸汽伴行管，其特征在于，所述运载管套上开设有与所述蒸汽管套相对应的连接孔，所述蒸汽管套与所述连接孔焊接。
  10. 一种权利要求1至9任一项所述的法兰式蒸汽伴行管的安装方法，其特征在于，包括以下步骤：
    步骤S10、提供所述运载管，在所述运载管的内、外壁涂覆保护层，然后将所述运载管的末端和运载管套的第一端依次与法兰焊接；
    步骤S20、在所述运载管的外侧设置蒸汽管，将所述蒸汽管的两端分别从运载管套上的蒸汽管套中拉出，然后将所述蒸汽管绑扎固定在所述运载管上；
    步骤S30、在所述运载管的外部套设保护管并对所述保护管的一端进行密封处理，然后由另一端向所述保护管与所述运载管之间的间隙中灌注液态可发泡的保温材料；
    步骤S40、当所述保温材料发泡并硬化后，采用热缩套密封连接所述运载管套和所述保护管；
    步骤S50、将相邻两个法兰式蒸汽伴行管通过法兰连接，并采用卡接套头连接相邻两个所述蒸汽管。
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