WO2018161614A1 - 异形油道片式散热器 - Google Patents

异形油道片式散热器 Download PDF

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Publication number
WO2018161614A1
WO2018161614A1 PCT/CN2017/108511 CN2017108511W WO2018161614A1 WO 2018161614 A1 WO2018161614 A1 WO 2018161614A1 CN 2017108511 W CN2017108511 W CN 2017108511W WO 2018161614 A1 WO2018161614 A1 WO 2018161614A1
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Prior art keywords
oil
heat sink
heat radiating
oil passage
heat
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PCT/CN2017/108511
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English (en)
French (fr)
Inventor
王建忠
陈志频
马昕霞
Original Assignee
常熟市友邦散热器有限责任公司
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Publication of WO2018161614A1 publication Critical patent/WO2018161614A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0316—Assemblies of conduits in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/086—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning having one or more openings therein forming tubular heat-exchange passages

Definitions

  • the invention belongs to the technical field of oil-immersed transformer components, and in particular relates to a special-shaped oil passage chip radiator.
  • the chip radiator As is known in the industry, in order to ensure long-term stable operation of the oil-immersed transformer, it is necessary to arrange the chip radiator on both sides of the longitudinal direction of the oil-immersed transformer body by means of flange connection or the like.
  • the heat transfer oil inside the radiator and the oil-immersed transformer forms a circulating cooling circuit, which acts as a core for cooling the oil-immersed transformer, so that the temperature rise of the oil-immersed transformer is controlled to ensure the normal operation of the power supply and distribution system. And safe.
  • improving the heat transfer performance of the chip heat sink can effectively reduce the oil temperature of the oil-immersed transformer, improve the working environment and help extend the service life of the oil-immersed transformer.
  • the heat dissipation efficiency of the chip heat sink and the improvement of the heat dissipation effect can also reduce the size of the chip heat sink and even reduce the number of chip heat sinks (the number of sets), which not only saves resource consumption, but also reduces oil. The cost of a immersed transformer.
  • the oil passages of the chip radiator are straight oil passages, and the oil in the oil passage is straight.
  • the disadvantage is that: because the oil does not produce secondary flow, it is not conducive to the mixing of oil, can not destroy the thermal boundary layer of the oil in the oil passage, the heat transfer coefficient can not meet the expectations of the industry.
  • the "slurry radiator for oil-immersed transformer cooling" recommended by CN204286154U can compensate for the above-mentioned shortcomings by providing a spiral ties which can cause secondary flow of oil in the oil passage.
  • the spiral ties as additional components need to be placed in the oil passage, on the one hand, the manufacturing difficulty is increased, on the other hand, the manufacturing cost is increased; and second, the spiral ties are high-quality materials or even The stainless steel belt is not conducive to saving resources; thirdly, since the spiral ties are integrally arranged in the oil passage, that is, in the height direction of the oil passage, the flow resistance of the oil is significantly increased, and the circulating cooling rate of the oil is affected. In view of this, the Applicant has made a beneficial design, and the technical solution to be described below is produced in this context.
  • the object of the present invention is to provide a profiled oil passage fin radiator comprising an oil inlet pipe, a return oil pipe and a set of longitudinally parallel and spaced apart ones between the oil inlet pipe and the oil return pipe.
  • each of the heat dissipation fins is composed of a front heat dissipation plate piece and a rear heat dissipation plate piece, and the front heat dissipation plate piece and the rear heat dissipation plate piece face each other.
  • the peripheral edge portion is welded together by the edge welding bead of the heat sink, and the upper portion between the front and rear heat sinks is formed as a heat sink inlet chamber, and the lower portion is formed as a heat sink returning oil chamber, and the middle portion is formed
  • the upper part of the heat dissipating oil passage communicates with the heat sink inlet oil passage
  • the lower part of the heat dissipating oil passage communicates with the heat sink oil return chamber
  • the heat sink inlet oil passage communicates with the oil inlet pipe
  • the heat sink oil return chamber and the oil return pipe
  • the front heat dissipation plate and the rear heat dissipation plate are connected to each other by a welding point in a region corresponding to the heat dissipation oil passage, and the welding points have a plurality of rows distributed from top to bottom. Pads spaced from each other on the course, the position of two vertically adjacent courses on the solder joints are staggered, by point welding heat oil passage formed
  • an inlet pipe fitting flange for mating with a transformer oil outlet of an oil-immersed transformer is formed at one end of the oil inlet pipe, and the other end of the oil inlet pipe is closed.
  • a radiator lug is fixed to a side of the middle and upward of the inlet pipe.
  • a venting screw plug is disposed on a side of the oil inlet pipe facing upward.
  • a return pipe fitting flange for mating with a transformer inlet of an oil-immersed transformer is formed at one end of the oil return pipe, and the other end of the oil return pipe is closed.
  • an oil drain plug is provided on a downwardly facing side of the oil return pipe.
  • fins are connected to the reinforcing ribs on both sides of the set of fins.
  • the front heat sink and the rear heat sink are stainless steel.
  • the technical effect of the technical solution provided by the present invention is that since the front and rear heat dissipation plates are connected to each other by the welding points in the region corresponding to the heat dissipation oil passage, and the positions of the welding points on the upper and lower adjacent courses are staggered,
  • the welding point forms a non-regular shaped oil passage for the heat dissipating oil passage, and does not need to be attached by a separate screw to the prior art.
  • Figure 1 is a block diagram of an embodiment of the present invention.
  • Figure 2 is a front elevational view of Figure 1.
  • Figure 3 is a partial structural view of Figure 2.
  • FIGS. 1 to 2 are transverse cross-sectional views of the heat sink shown in FIGS. 1 to 2.
  • an inlet pipe 1, a return pipe 2, and a set of longitudinally parallel and spaced apart from each other between the inlet pipe 1 and the return pipe 2 are shown for introducing the inlet pipe 1
  • the high-temperature oil is cooled and then returned to the heat sink 3 of the oil return pipe 2.
  • Each of the heat sinks 3 is composed of a front heat dissipation plate 31 and a rear heat dissipation plate 32.
  • the front heat dissipation plate 31 and the rear heat dissipation plate 32 are mutually Face-to-face fit and welded to each other at the peripheral edge portion by the fin margin weld bead 33, the upper portion between the front and rear fins 31, 32 is formed as a fin inlet chamber 34, and the lower portion is formed as a fin back
  • the oil chamber 35 is formed, and the central portion is formed as a heat dissipation oil passage 36.
  • the upper portion of the heat dissipation oil passage 36 communicates with the heat sink oil inlet chamber 34, and the lower portion of the heat dissipation oil passage 36 communicates with the heat sink oil return chamber 35.
  • the heat sink inlet oil chamber 34 It is in communication with the oil inlet pipe 1, and the heat sink returning oil chamber 35 communicates with the oil return pipe 2.
  • the front heat dissipation plate piece 31 and the rear heat dissipation plate piece 32 are connected to each other by a welding point 37 in a region corresponding to the heat dissipation oil passage 36, and the welding point 37 has a top-down interval.
  • a plurality of rows are distributed, and the solder joints 37 on each row are spaced apart from each other, and the positions of the solder joints 37 on the upper and lower adjacent rows are shifted from each other, and the heat dissipating oil passages 36 are formed into irregular irregular oil passages by the solder joints 37. .
  • the number of weld points 37 on the upper and lower adjacent courses is different, for example, from top to bottom, the first course
  • the number of solder joints 37 is seven
  • the number of solder joints 37 on the second row is six
  • the number of solder joints 37 on the third and fourth rows is seven and six, respectively.
  • This arrangement allows the positions of the weld points 37 on the upper and lower adjacent courses to be staggered, for example, a weld spot 37 on the upper row and two weld points 37 on the next row form a substantially equilateral triangle. Relationship, and vice versa.
  • the aforementioned distribution of the solder joints 37 causes the heat dissipating oil passages 36 to form a deformed oil passage, and the oil flowing through the heat dissipating oil passages 36 can generate a secondary flow and break the thermal boundary layer, which is advantageous for improving the heat transfer coefficient.
  • FIG. 1 Please refer to FIG. 1 at the end of the aforementioned oil inlet pipe 1 to form a transformer for oil discharge with an oil-immersed transformer.
  • the port-fitted inlet pipe is fitted with the flange 11, and the other end of the inlet pipe 1 is closed and a radiator lug 12 is fixed on the side of the inlet pipe 1 and facing upward, and the side facing the inlet pipe 1 A vent plug 13 is provided.
  • a return pipe fitting flange 21 for mating with the transformer inlet of the oil-immersed transformer is formed, and the other end of the oil return pipe 2 is closed and on the downward side of the oil return pipe 2
  • An oil drain plug (not shown) is provided.
  • heat sink connection ribs 38 are disposed on both sides of the aforementioned one set of fins 3 .
  • the aforementioned front heat dissipation plate 31 and rear heat dissipation plate 32 are stainless steel plates.
  • the high-temperature oil from the oil-immersed transformer is sequentially connected to the flange 11 of the oil inlet pipe, the oil inlet pipe 1, the heat sink oil inlet chamber 34, the heat dissipation oil passage 36 and the heat sink oil return chamber 35, and then through the oil return pipe 2, and then The return pipe fitting flange 21 is led back to the oil immersed transformer.
  • the flow of the oil in the heat dissipating oil passage 36 is irregular.
  • the technical solution provided by the present invention compensates for the shortcomings in the prior art, successfully completes the inventive task, and faithfully implements the technical effects described by the applicant in the above technical effects column.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

一种异形油道片式散热器，包括进油管、回油管及一组散热片，一组散热片各由前、后散热板片组成，该前、后散热板片彼此面对面配合且四周边缘部位相互焊接为一体，散热油道的上部与散热片进油腔相通，散热油道的下部与散热片回油腔相通，散热片进油腔与进油管相通，散热片回油腔与回油管相通，特点：对应于散热油道的区域由焊接点将前、后散热板片彼此连接，焊接点具有自上而下间隔分布的复数个横列，每一横列上的焊接点彼此间隔，上下两相邻横列上的焊接点的位置相互错开，藉由焊接点将散热油道形成非规则的异形油道。由焊接点将散热油道形成非规则的异形油道，达到使散热油道内的油液形成二次流并起到破坏热油边界层提高传热系数的目的。

Description

异形油道片式散热器 技术领域
本发明属于油浸式变压器构件技术领域，具体涉及一种异形油道片式散热器。
背景技术
如业界所知，为了确保油浸式变压器得以长期稳定运行，需在油浸式变压器本体的长边方向的两侧借助于法兰连接方式或其它类似的连接方式配置片式散热器，片式散热器与油浸式变压器内部的导热油形成循环冷却回路，起到对油浸式变压器内部的铁芯冷却的作用，使油浸式变压器的温升得到控制，保障供配电系统的正常运行与安全。
在公开的中国专利文献中不乏关于片式散热器的技术信息，如CN201084519Y(变压器片式散热器)、CN201229827Y(散热片阶梯式散热器)、CN201185117Y(变压器用的片式散热器)、CN201185118Y(变压器的散热器)、CN201185115Y(具有风机座的散热器)、CN201256051Y及CN101388275A(采用蒸发冷却技术的变压器换热器)、CN202394651U(变压器片式散热器)、CN201331277Y(变压器用片式散热器)和CN101930829A(一种油浸式变压器的散热器)，等等。
进而如业界所知，提高片式散热器的传热性能可有效降低油浸式变压器的油液温度，改善工作环境并有利于延长油浸式变压器的使用寿命。此外，片式散热器的散热效率以及散热效果的改善还可减小片式散热器的规格尺寸乃至减少片式散热器的数量(组数)，不仅可以节省对资源的消耗，而且能够降低油浸式变压器的成本。
通过对并非限于上面例举的专利文献的阅读可知，在片式散热器的结构设计上存在共同点，即片式散热器的油道均为平直油道，油道内的油液表现为直进直出，不足在于：由于油液不产生二次流，因而不利于油液的混合，无法破坏油道内的油液的热边界层，传热系数并不能达到业界之预期。CN204286154U推荐的“一种油浸式变压器冷却用片式散热器”由于在油道内设置了得以使油液产生二次流的螺旋纽带，因而能弥补前述不足。但是存在以下缺憾：其一，由于需将作为附加部件的螺旋纽带设置于油道内，因而一方面增加了制造难度，另一方面使制造成本增大；其二，由于螺旋纽带为优质材料乃至为不锈钢带，因而不利于节约资源；其三，由于在油道内即在油道的高度方向整体设置螺旋纽带，因而会显著增大油液的流阻，影响油液的循环冷却速度。鉴于此，本申请人作了有益的设计，下面将要介绍的技术方案便是在这种背景下产生的。
发明内容
本发明的任务在于提供一种有助于使油道自身形成得以使油液产生二次流并破坏油液热边界层而藉以提高传热系数的异形油道片式散热器。
本发明的任务是这样来完成的，一种异形油道片式散热器，包括一进油管、一回油管以及一组既彼此纵向并行又相互间隔地配置在进油管与回油管之间的用于将进油管引入的高温油液散热后回引至回油管的散热片，一组散热片各由前散热板片和后散热板片组成，该前散热板片和后散热板片彼此面对面配合并且在四周边缘部位由散热片边际焊道相互焊接为一体，前、后散热片之间的上部区域构成为一散热片进油腔，下部区域构成为一散热片回油腔，而中部区域构成为散热油道，散热油道的上部与散热片进油腔相通，散热油道的下部与散热片回油腔相通，散热片进油腔与进油管相通，而散热片回油腔与回油管相通，特征在于在对应于所述散热油道的区域由焊接点将所述前散热板片与后散热板片彼此连接，焊接点具有自上而下间隔分布的复数个横列，每一横列上的焊接点彼此间隔，而上下两相邻横列上的焊接点的位置相互错开，藉由焊接点将散热油道形成非规则的异形油道。
在本发明的一个具体的实施例中，在所述进油管的一端构成有一用于与油浸式变压器的变压器出油口配接的进油管配接法兰，而进油管的另一端封闭。
在本发明的另一个具体的实施例中，在所述进油管的中部并且朝向上的一侧固定有散热器吊耳。
在本发明的又一个具体的实施例中，在所述进油管朝向上的一侧设置有一放气螺塞。
在本发明的再一个具体的实施例中，在所述回油管的一端构成有一用于与油浸式变压器的变压器进油口配接的回油管配接法兰，而回油管的另一端封闭。
在本发明的还有一个具体的实施例中，在所述回油管朝向下的一侧设置有一放油螺塞。
在本发明的更而一个具体的实施例中，在所述的一组散热片的两侧各设置有散热片连接加强筋条。
在本发明的进而一个具体的实施例中，所述的前散热板和后散热板为不锈钢板。
本发明提供的技术方案的技术效果在于：由于在对应于散热油道的区域由焊接点将前、后散热板片彼此连接，并且各上下两相邻横列上的焊接点的位置错开，因而由焊接点将散热油道形成非规则的异形油道，相对于已有技术无需通过另行附加的螺旋纽带达 到使散热油道内的油液形成二次流并起到破坏热油边界层提高传热系数的目的。
附图说明
图1为本发明的实施例结构图。
图2为图1的正视图。
图3为图2的局部结构图。
图4为图1至图2所示的散热片的横向剖视图。
具体实施方式
实施例1：
请参见图1至图4，示出了一进油管1、一回油管2以及一组既彼此纵向并行又相互间隔地配置在进油管1与回油管2之间的用于将进油管1引入的高温油液散热后回引至回油管2的散热片3，一组散热片3各由前散热板片31和后散热板片32组成，该前散热板片31和后散热板片32彼此面对面配合并且在四周边缘部位由散热片边际焊道33相互焊接为一体，前、后散热片31、32之间的上部区域构成为一散热片进油腔34，下部区域构成为一散热片回油腔35，而中部区域构成为散热油道36，散热油道36的上部与散热片进油腔34相通，散热油道36的下部与散热片回油腔35相通，散热片进油腔34与进油管1相通，而散热片回油腔35与回油管2相通。
作为本发明提供的技术方案的技术要点：在对应于前述散热油道36的区域由焊接点37将前述前散热板片31与后散热板片32彼此连接，焊接点37具有自上而下间隔分布的复数个横列，每一横列上的焊接点37彼此间隔，而上下两相邻横列上的焊接点37的位置相互错开，藉由焊接点37将散热油道36形成非规则的异形油道。
在图1中示出了十九个横列，但并不受到限制，在十九个横列中，由于上下两相邻横列上的焊接点37的数量不同，例如自上而下数，第一横列上的焊接点37的数量为七个，而第二横列上的焊接点37的数量为六个，第三、第四横列上的焊接点37的数量又分别为七个和六个，如此循环。这种分布形式能使上下两相邻横列上的焊接点37的位置错开，例如上一横列上的一个焊接点37与下一横列上的两个焊接点37形成大体上为等边三角形的位置关系，反之同例。进而，焊接点37的前述分布使散热油道36形成异形油道，流经散热油道36的油液能产生二次流并使热边界层破坏，对于提高传热系数十分有利。
请重点见图1，在前述进油管1的一端构成有一用于与油浸式变压器的变压器出油 口配接的进油管配接法兰11，而进油管1的另一端封闭并且在进油管1的中部并且朝向上的一侧固定有散热器吊耳12以及在进油管1朝向上的一侧设置有一放气螺塞13。
在前述回油管2的一端构成有一用于与油浸式变压器的变压器进油口配接的回油管配接法兰21，而回油管2的另一端封闭并且在回油管2朝向下的一侧设置有一放油螺塞(图中未示出)。
优选地，在前述的一组散热片3的两侧各设置有散热片连接加强筋条38。
在本实施例中，前述的前散热板31和后散热板32为不锈钢板。
出自油浸式变压器的高温油液依次经进油管配接法兰11、进油管1、散热片进油腔34和散热油道36和散热片回油腔35，再经回油管2，进而经回油管配接法兰21回引至油浸式变压器。在前述过程中，散热油道36内的油液的流动是不规则的。
综上所述，本发明提供的技术方案弥补了已有技术中的缺憾，顺利地完成了发明任务，如实地兑现了申请人在上面的技术效果栏中载述的技术效果。

Claims (8)

  1. 一种异形油道片式散热器，包括一进油管(1)、一回油管(2)以及一组既彼此纵向并行又相互间隔地配置在进油管(1)与回油管(2)之间的用于将进油管(1)引入的高温油液散热后回引至回油管(2)的散热片(3)，一组散热片(3)各由前散热板片(31)和后散热板片(32)组成，该前散热板片(31)和后散热板片(32)彼此面对面配合并且在四周边缘部位由散热片边际焊道(33)相互焊接为一体，前、后散热片(31、32)之间的上部区域构成为一散热片进油腔(34)，下部区域构成为一散热片回油腔(35)，而中部区域构成为散热油道(36)，散热油道(36)的上部与散热片进油腔(34)相通，散热油道(36)的下部与散热片回油腔(35)相通，散热片进油腔(34)与进油管(1)相通，而散热片回油腔(35)与回油管(2)相通，其特征在于在对应于所述散热油道(36)的区域由焊接点(37)将所述前散热板片(31)与后散热板片(32)彼此连接，焊接点(37)具有自上而下间隔分布的复数个横列，每一横列上的焊接点(37)彼此间隔，而上下两相邻横列上的焊接点(37)的位置相互错开，藉由焊接点(37)将散热油道(36)形成非规则的异形油道。
  2. 根据权利要求1所述的异形油道片式散热器，其特征在于在所述进油管(1)的一端构成有一用于与油浸式变压器的变压器出油口配接的进油管配接法兰(11)，而进油管(1)的另一端封闭。
  3. 根据权利要求1或2所述的异形油道片式散热器，其特征在于在所述进油管(1)的中部并且朝向上的一侧固定有散热器吊耳(12)。
  4. 根据权利要求3所述的异形油道片式散热器，其特征在于在所述进油管(1)朝向上的一侧设置有一放气螺塞(13)。
  5. 根据权利要求1所述的异形油道片式散热器，其特征在于在所述回油管(2)的一端构成有一用于与油浸式变压器的变压器进油口配接的回油管配接法兰(21)，而回油管(2)的另一端封闭。
  6. 根据权利要求1或5所述的异形油道片式散热器，其特征在于在所述回油管(2)朝向下的一侧设置有一放油螺塞。
  7. 根据权利要求1所述的异形油道片式散热器，其特征在于在所述的一组散热片(3)的两侧各设置有散热片连接加强筋条(37)。
  8. 根据权利要求1所述的异形油道片式散热器，其特征在于所述的前散热板(31)和后散热板(32)为不锈钢板。
PCT/CN2017/108511 2017-03-06 2017-10-31 异形油道片式散热器 WO2018161614A1 (zh)

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CN107014238A (zh) * 2017-05-23 2017-08-04 常熟市友邦散热器有限责任公司 热镀锌片式散热器
CN112930091B (zh) * 2021-02-09 2022-05-31 联想(北京)有限公司 散热结构及电子设备

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