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CN104864217A - 可加热的流体管道和用于可加热的流体管道的连接器 - Google Patents

可加热的流体管道和用于可加热的流体管道的连接器 Download PDF

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CN104864217A
CN104864217A CN201510052394.XA CN201510052394A CN104864217A CN 104864217 A CN104864217 A CN 104864217A CN 201510052394 A CN201510052394 A CN 201510052394A CN 104864217 A CN104864217 A CN 104864217A
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heating rod
connector
peripheral wall
outlet channel
central axis
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CN104864217B (zh
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斯蒂芬·曼恩
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Norma Germany GmbH
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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
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. by adjusting the dosing of reducing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2896—Liquid catalyst carrier
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
    • F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • 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
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/35—Ohmic-resistance heating
    • F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1486—Means to prevent the substance from freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/01—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof

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  • Pipe Accessories (AREA)
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  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

本发明提供了一种可加热的流体管道(1)，其具有管子(3)、连接器(2)和加热棒(8)。该连接器布置在管道(3)的端部处，并且具有带有纵向轴线(11)的入口通道(6)。该加热棒布置在管子(3)的内部，并且穿过出口通道(9)以与纵向轴线(11)成预定的角度(α)的方式于一侧从连接器(2)中伸出，其中，在具有周壁(21)的容纳空间(20)中在加热棒(8)和连接器(2)之间布置有密封件(13)。希望能够对从一侧导出的加热棒(8)进行可靠的密封。为此设置成，设置使加热棒(8)和密封件(13)相对彼此居中的装置。

Description

可加热的流体管道和用于可加热的流体管道的连接器
技术领域
本发明涉及一种可加热的流体管道，其具有管子、连接器和加热棒，该连接器布置在管子的端部处，并且具有带有纵向轴线的入口通道，该加热棒布置在管子的内部，并且穿过出口通道以与纵向轴线成预定的角度的方式于一侧从连接器中伸出，其中在具有周壁的容纳空间中于加热棒和连接器之间布置有密封件。
此外，本发明还涉及一种用于可加热的流体管道的连接器，其带有具有纵向轴线的入口通道、以与该纵向轴线成预定的角度的方式分布的一侧的出口通道，以及用于密封件的容纳空间，该容纳空间与出口通道连接，并且具有带有中轴线的周壁，其中密封件可定位在该容纳空间中。
背景技术
可加热的流体管道和用于这种类型的可加热的流体管道的连接器已经在专利文献DE102011102244A1中公开。
随后借助于一种流体管道对该发明进行了说明，该流体管道用于将尿素从库存容器运输至消耗点。尿素(UREA)可以例如在柴油机中使用，以便减少氮氧化物的排放。
如果这种类型的流体管道安装在机动车中，那么在低的外部温度下存在这样一种危险，即尿素冻结在流体管道中，从而不能再流动。由此可知，需要对流体管道和连接器进行加热。
如果连接器具有直线式分布的入口通道，即入口通道方向不变地直达出口通道，那么必须将加热棒于一侧从连接器中导出。在此，与纵向轴线的角度通常在20°到80°之间。为了避免加热的流体流出，必须在连接器的出口处对加热棒进行密封。为了密封可以使用布置在与出口通道连接的容纳空间中的密封件。该密封件例如可以构造成圆形密封件或者O型密封件，其与加热棒和周壁密封接触，使得流体不能再通过出口通道从连接器中流出。
然而已经表明，该密封功能并不总是能满足必要的可靠性。
发明内容
本发明的目的是对于一侧从连接器中导出的加热棒进行可靠的密封。
上述目的可以在上述类型的可加热的流体管道中通过以下方式实现，即设置使加热棒和密封件相对彼此居中的装置。
回到上述密封的问题，即以大致平行于纵向轴线的方式进入连接器的入口通道并且以与纵向轴线成预定的角度的方式穿过出口通道出来的加热棒不能轻松地居中地布置在出口通道中。为了能够整体地安装加热棒，该出口通道必须具有稍大于加热棒的横截面的横截面。如果加热棒不再居中地布置在出口通道中，那么密封件的一个周向区段被过多地施加压力，即所谓的过度挤压，而另一个周向区段则被过少地施加压力，从而不能以必要的可靠性来确保整体上的密封性。如果设置使加热棒和密封件相对彼此居中的装置，那么可以通过简单的方式解决密封性的问题。密封件所有的周向区段于是可以通过相同的方式进行压缩，从而在周向区段上不会有过度挤压或者挤压不足的情况出现。
优选地，该周壁具有中轴线，其相对于出口通道的中轴线向一侧偏移。容纳空间与出口通道于是不再同轴地布置。由此，可以兼顾加热棒在出口通道中的实际位置。
在此优选的是，该周壁的中轴线相对于出口通道的中轴线朝向纵向轴线偏移。由此可以考虑加热棒的残余应力，即加热棒在从入口通道出来转入出口通道之后所具有的残余应力。于是可以不必预先弯曲加热棒。
优选的是，该周壁的中轴线相对于出口通道的中轴线具有小于0.5mm的偏移。该偏移量可以相对较小。它可以例如是0.2、0.3、0.4或者0.5mm，或者是它们的中间值。
对于偏心地布置容纳空间的周壁和出口通道的技术方案，还可以替代性地或者附加性地设置成，在容纳空间中布置支撑于周壁上并且使加热棒相对于密封件定位的支撑垫圈。该支撑垫圈可以支撑在周壁上以抵抗由加热棒的弯曲所引起的张力，并且由此使加热棒相对于密封件定位。
优选地，在入口通道中布置有斜坡元件，其具有从入口通道中朝向出口通道的引导面。加热棒于是可以被引导着穿过入口通道而进入连接器。加热棒于是接触到斜坡元件的引导面，并且由此转向出口通道。它于是从出口通道和用于密封件的容纳空间中穿出。实际上，在这种情况下不可避免的是，加热棒由于一定的内在刚性而在穿过容纳空间时不再相对于密封件居中。该问题可以通过一种装置，即周壁和出口通道的偏心和/或支撑垫圈而得以解决，否则可能引发不能密封的风险。
上述目的可以在上述类型的连接器中通过以下方式实现，即周壁的中轴线相对于出口通道的中轴线偏移，和/或在容纳空间中布置支撑于周壁上的支撑垫圈。
采用这种类型的设计方案可以预先补偿加热棒由于其内在刚性而不能自发地在出口通道居中的问题。由此可以在加热棒从连接器中穿出的位置处实现更好的密封性。
优选地，该周壁的中轴线相对于出口通道的周壁的中轴线朝向纵向轴线偏移。由此可以省去预先弯曲加热棒的步骤。
优选地，该周壁的中轴线相对于出口通道的中轴线最大偏移0.5mm。这种小的偏移量足以解决加热棒在出口通道中偏心所带来的问题。
附图说明
下面借助优选的实施例并结合附图来描述本发明。在图中：
图1是可加热的管道在端部处的示意性的纵向剖视图，
图2是沿图1中的线II-II的剖视图，
图3是出口通道的示意性的俯视图，
图4是图1中的部分放大的示意图，
图5显示了针对图4的改进的实施例。
具体实施例
图1显示了可加热的流体管道1，其具有连接器2和管子3。该管子是柔性的。它可以由经挤压的塑料或者还可以由软管材料形成。而且软管应当在下文中落入“管子”的概念范畴内。
管子3插接在连接器的管接头4上，并且在该处借助O型环5进行密封。管接头4在其外侧上具有圣诞树式的轮廓。如果需要，管子3还可以借助于注塑包封固定在管接头4上。
从图2中可以看出，入口通道6被引导着通过管接头4直至连接几何件7，该入口通道以通过整个连接器穿出的方式直线式地分布。借助连接几何体7，连接器2可以固定在另一个管道、水箱或者总成件的连接接头处。在此情况下，连接几何体7的具体的形状并不重要。但是，它应当构造成使得连接器2与连接接头之间的连接具有足够的强度和密封性。
在管子3的自由横截面上布置有作为加热装置的加热棒8(以虚线标示)。该加热棒8具有至少一个热导体，该热导体嵌入到经挤压的塑料材料中。优选地可以设置两个热导体，它们在远离连接器2的端部处彼此连接，从而只需在加热棒8的端部处设置电源。该加热棒8可以是柔性的和可弯曲的。但是，该加热棒具有一定的内在刚性，使得当管子3(加热棒8位于其中)被推到管接头4上时，加热棒8可以被推入管接头4中的入口通道6内。
该加热棒8应当在它到达连接几何体7之前离开连接器2，以便不会干扰借助连接几何件7所建立的连接。相应地，该连接器具有出口通道9，该出口通道的纵向轴线10与入口通道6的纵向轴线11成角度α。该角度α大于0°，并且优选处于20°至80°的范围内。
该出口通道9布置在喷嘴12中，该喷嘴以与入口通道6的纵向轴线11成角度α的方式设立。在该喷嘴12中设置有O型环13。该O型环13与加热棒8密封接触，并且阻止流体从出口通道中流出。该O型环13借助堵头14固定在布置于喷嘴12内的出口通道9中。该堵头14只是将该O型环保持在位置上。即，该堵头并不挤压O型环。
斜坡元件15具有弯曲的引导面16，即该引导面构造成没有扭结。该引导面16从入口通道6的“下侧”(即与出口通道9相对的一侧)延伸直至出口通道9，并且继续达到出口通道9的壁上。该加热棒8的顶部可以在引导面16上沿着其滑动，而不会受到台阶、扭结、坑槽或者类似物的阻碍。如果加热棒8被引导着穿过管接头4进入入口通道6中，那么该顶部通过斜坡元件15的引导面16而转向，从而自动地到达到出口通道9中。
制造带有这种类型的连接器2的可加热的流体管道1可以相对简单地进行。只需将管子3与加热棒8预先组装，使得该加热棒8以预定的长度从管子3中伸出。在管子3被推到管接头4上以前，该加热棒8已经到达位于管接头4内部的入口通道6中。于是，当共同地继续移动管子3和加热棒8时，为了将管子3推至管接头4上，那么加热棒8的顶部会通过斜坡元件15上的引导面16而转向，使得该顶部到达出口通道9中并且能够从连接器2中伸出。
当然还可以先将加热棒8单独地放入连接器2中，然后将管子3引导着经过加热棒8并且推至管接头4上。
为了容纳O型环13(即密封件)，设置了具有周壁21的容纳空间20。该O型环13(即密封件)应当以预定的预应力径向向内地顶靠在加热棒8上，并且径向向外地顶靠在周壁21上。在此情况下，该预应力应当在周向上大致均匀地分布。
然而，该加热棒8通常不会居中地处在出口通道9中。该加热棒8具有一定的内在刚性。当该加热棒经过斜坡元件15的引导面16被推入出口通道9时，该内在刚性会使得加热棒可以弯曲。由于内在刚性，加热棒8试图保持其延伸的位置。这导致了加热棒8不再在出口通道9居中，而是明显地向入口通道6的纵向轴线11倾斜。如果没有额外的措施，这会导致O型环13的周边区域被较大程度地压缩，而O型环13的径向上相对的区域则被较小程度地压缩。该O型环13的过度挤压和挤压不足都会有不能密封的风险。
为了避免上述风险，可以对加热棒8在出口通道9中的偏心进行预先补偿。如图3和图4中所示，对此存在一种可能性，即，将出口通道9和容纳空间20彼此偏心地布置。换言之，周壁21具有中轴线22，其相对于出口通道9的中轴线10向一侧偏移，更确切地说是向纵向轴线11偏移。从图4中可以看出，这可以通过以下方式实现，即，将O型环13布置在容纳空间20中，使得它可以由加热棒8在所有的周向区段上被大致均匀地挤压。
这两个中轴线10、22具有偏移量d，该偏移量在图3和图4中被放大地示出。周壁的中轴线22相对于出口通道9的中轴线10的偏移最大可为0.5mm，例如0.3mm，这在许多情况下是足够的。
对此存在另外一种可以附加式地或者替换式地使用的可能性，即，在容纳空间20中布置支撑垫圈23。该支撑垫圈可以设置成这样的尺寸，即一方面它能够以小的间隙放置在容纳空间20中，但另一方面它可以确保加热棒8的位置，在该位置处O型环13在其整个圆周上受到均匀的挤压。当支撑垫圈23能够支撑在周壁21的最接近加热棒8的区域上时，或者没有其他的措施时，这基本上是足够的。这可以参照图5中的周壁21的右侧。相反，在周壁21的相对的一侧上，在支撑垫圈23和周壁21之间具有间隙24。由于该间隙24，在该方案中将容纳空间20和出口通道9彼此偏心地布置是有益的。对此，作为替换的是，还可以在支撑垫圈23中偏心地布置开口25，通过该开口来引导加热棒8。

Claims (9)

1.可加热的流体管道(1)，其具有管子(3)、连接器(2)和加热棒(8)，所述连接器布置在所述管道(3)的端部处，并且具有带有纵向轴线(11)的入口通道(6)，所述加热棒布置在所述管子(3)的内部，并且穿过出口通道(9)以与所述纵向轴线(11)成预定的角度(α)的方式于一侧从所述连接器(2)中伸出，其中，在具有周壁(21)的容纳空间(20)中在所述加热棒(8)与连接器(2)之间布置有密封件(13)，其特征在于，设置有使所述加热棒(8)和密封件(13)相对彼此居中的装置。
2.根据权利要求1所述的流体管道，其特征在于，所述周壁(21)具有中轴线(22)，其相对于所述出口通道(9)的中轴线(10)向一侧偏移。
3.根据权利要求2所述的流体管道，其特征在于，所述周壁(21)的中轴线(22)相对于所述出口通道(9)的中轴线(10)朝着所述纵向轴线(11)偏移。
4.根据权利要求2或3所述的流体管道，其特征在于，所述周壁(21)的中轴线(22)相对于所述出口通道(9)的中轴线(10)最大偏移0.5mm。
5.根据权利要求1至4中任意一项所述的流体管道，其特征在于，在所述容纳空间(20)中布置有支撑垫圈(23)，其支撑于所述周壁(21)上并且使所述加热棒(8)相对于所述密封件(13)定位。
6.根据权利要求1至5中任意一项所述的流体管道，其特征在于，在所述入口通道(6)中布置有斜坡元件(15)，其具有从所述入口通道(6)朝向所述出口通道(9)的引导面(16)。
7.用于可加热的流体管道的连接器，其具有带有纵向轴线(11)的入口通道(6)、以与所述纵向轴线(11)成预定的角度(α)的方式分布的一侧的出口通道(9)，以及用于密封件(13)的容纳空间(20)，所述容纳空间连接所述出口通道(9)，并且具有带有中轴线(22)的周壁(21)，其中所述密封件(13)定位在所述容纳空间中，其特征在于，所述周壁(21)的中轴线(22)相对于所述出口通道(9)的中轴线(10)偏移，和/或在所述容纳空间(20)中布置有支撑于所述周壁(21)上的支撑垫圈(23)。
8.根据权利要求7所述的连接器，其特征在于，所述周壁(21)的中轴线(22)相对于所述出口通道(9)的中轴线(10)朝着所述纵向轴线(11)偏移。
9.根据权利要求8或9所述的连接器，其特征在于，所述周壁(21)的中轴线(22)相对于所述出口通道(9)的中轴线(10)最大偏移0.5mm。
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