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CN203643052U - 一种热阻热流传感器 - Google Patents

一种热阻热流传感器 Download PDF

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Publication number
CN203643052U
CN203643052U CN201320830941.9U CN201320830941U CN203643052U CN 203643052 U CN203643052 U CN 203643052U CN 201320830941 U CN201320830941 U CN 201320830941U CN 203643052 U CN203643052 U CN 203643052U
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core
flux sensor
thermal resistance
heat flux
resistance heat
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李军
黄烈强
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MIANYANG FU LIN LAN TECHNOLOGY Co Ltd
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MIANYANG FU LIN LAN TECHNOLOGY Co Ltd
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Abstract

本实用新型公开了一种热阻热流传感器，包括：外壳，所述外壳内部具有一贯通管，外壳顶端开口内径小于底端开口内径；探芯，所述探芯内部开有通道，所述通道底端开口，通道顶端封闭具有一热阻层；所述探芯热阻层一端从外壳底端插入，并伸入探芯顶端开口中，与顶端开口端面相平；隔热涂料，所述隔热涂料填充在探芯与外壳之间的夹层内；隔水管，所述隔水管一端插入探芯通道，隔水管的另一端连通于进水管道；隔水管与探芯通道之间形成夹层，所述夹层连通于出水管道；至少两根热电偶丝，从探芯与外壳之间的连接处穿入，并穿过隔热涂料，焊接在探芯热阻层的不同部位。

Description

一种热阻热流传感器
技术领域
本实用新型涉及一种热阻热流传感器。
背景技术
热阻热流传感器，其基本原理是通过测量热阻层的温度差，利用傅里叶定律计算出通过热阻层的导热热流，测温元件主要有热电偶和温敏电阻。由于热电偶可以直接输出电压而不需要外部电源供电，对于诸如物理应变等影响热电阻的因素也不敏感，因此成为最常用的测温手段，热阻式热流传感器有多种不同结构。热阻热流传感器的电压输出正比于热阻层两边的温差，公式如下：E=ST(T1-T2)，其中ST为热电偶的赛贝克系数。在热流较低，热阻层很薄的情况下，单对热电偶有可能由于灵敏度低而无法输出足够大的电压值，所以将上下热电偶对串联成热电堆来增加灵敏度。
现有的热阻热流传感器，感温层往往分为多个层，以达到温差较大，但此种方法导致热损失，致使测量不准确。
实用新型内容：
本实用新型针对现有技术的缺陷，提出了一种热阻热流传感器，结构简单，热阻层为一体式，通过多种电偶对热阻层各点温差，测量精确，使用方便。
本实用新型提供的技术方案如下。
一种热阻热流传感器，包括：
外壳，所述外壳内部具有一贯通管，外壳顶端开口内径小于底端开口内径；
探芯，所述探芯内部开有通道，所述通道底端开口，通道顶端封闭具有一热阻层；所述探芯热阻层一端从外壳底端插入，并伸入探芯顶端开口中，与顶端开口端面相平；
隔热涂料，所述隔热涂料填充在探芯与外壳之间的夹层内；
隔水管，所述隔水管一端插入探芯通道，隔水管的另一端连通于进水管道；隔水管与探芯通道之间形成夹层，所述夹层连通于出水管道；
至少两根热电偶丝，从探芯与外壳之间的连接处穿入，并穿过隔热涂料，焊接在探芯热阻层的不同部位。
优选的所述的热阻热流传感器，其外壳外部壳身上开有密封槽，槽内安装有O型橡胶密封圈。
优选的所述的热阻热流传感器，其外壳上安装有调节螺母。
优选的所述的热阻热流传感器，其热电偶丝焊接点涂有绝缘漆。
优选的所述的热阻热流传感器，其探芯与进水管道和出水管道之间具有一后盖。
优选的所述的热阻热流传感器，其热电偶丝为康铜丝；
优选的所述的热阻热流传感器，其热电偶丝为纯铜丝；
优选的所述的热阻热流传感器，其热电偶丝具有多组，每组两根，其材质分别为为康铜丝和纯铜丝。
本实用新型针的热阻热流传感器，结构简单，热阻层为一体式，通过多种电偶对热阻层各点温差，测量精确，使用方便。隔热涂料能充分隔绝壁面传热，使传热更精准。
附图说明
图1为本实用新型所述的热阻热流传感器剖面图。
具体实施方式
下面结合附图对本实用新型做进一步的详细说明，以令本领域技术人员参照说明书文字能够据以实施。
一种热阻热流传感器，包括：
外壳2，所述外壳2内部具有一贯通管，外壳2顶端开口内径小于底端开口内径；探芯1，所述探芯1内部开有通道，所述通道底端开口，通道顶端封闭具有一热阻层；所述探芯热阻层一端从外壳底端插入，并伸入探芯顶端开口中，与顶端开口端面相平；隔热涂料8，所述隔热涂料8填充在探芯1与外壳2之间的夹层内；隔水管3，所述隔水管3一端插入探芯1通道；后盖15所述后盖15焊接在探芯上，后内具有一出水通道和一出水通道，隔水管3连通在后盖15的进水通道出水口，后盖15的出水通道进水口连通在探芯1和隔水管3的夹层上，后盖15的进水通道进水口安装有进水管道5，后盖15的出水通道出水口安装有出水管道4；热电偶丝，包括第一纯铜丝9、第一康铜丝11，一端头去除保护旋紧在一起并从探芯与外壳之间的连接处穿入，并穿过隔热涂料，焊接在探芯热阻层的低位14；第二纯铜丝10、第二康铜丝12，一端头去除保护旋紧在一起并从探芯与外壳之间的连接处穿入，并穿过隔热涂料，焊接在探芯热阻层的高位13；
进一步的外壳2外部壳身上开有密封槽，槽内安装有O型橡胶密封圈7，当安装时候用以与检测设备的密封。
进一步的外壳2上安装有调节螺母6，用于当与检测设备安装时候，调节外壳的进入深度。
进一步的热电偶丝焊接点涂有绝缘漆，避免与隔热材料之间形成短路。
当使用时，外壳与热阻层插入需要检测介质中，热量对热阻层进行加热，隔热涂料隔绝侧壁温度，冷却水可以避免温度过高导致烧坏传感器。同时热电偶丝连接外部设备，测量纯铜丝温差变化产生的电压，测量康铜丝温差变化产生的电压，多点测量可以保证测量的热流量更加准确。同时，可以测量进出水温度，与热电偶丝所测值之间形成的函数关系，也可以对所测值进行修正。
本实用新型所述的水冷式热阻热流传感器，结构简单，水冷循环使基准点能保持平稳的温度，大大提高了水冷式传感器对热量传递的精度。
尽管本实用新型的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用，它完全可以被适用于各种适合本实用新型的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本实用新型并不限于特定的细节和这里示出与描述的图例。

Claims (8)

1.一种热阻热流传感器，其特征在于，包括： 
外壳，所述外壳内部具有一贯通管，外壳顶端开口内径小于底端开口内径； 
探芯，所述探芯内部开有通道，所述通道底端开口，通道顶端封闭具有一热阻层；所述探芯热阻层端从外壳底端插入，并伸入探芯顶端开口中，与顶端开口端面相平； 
隔热涂料，所述隔热涂料填充在探芯与外壳之间的夹层内； 
隔水管，所述隔水管一端插入探芯通道，隔水管的另一端连通于进水管道；隔水管与探芯通道之间形成夹层，所述夹层连通于出水管道； 
至少两根热电偶丝，从探芯与外壳之间的连接处穿入，并穿过隔热涂料，焊接在探芯热阻层的不同部位。 
2.如权利要求1所述的热阻热流传感器，其特征在于，所述外壳外部壳身上开有密封槽，槽内安装有O型橡胶密封圈。 
3.如权利要求1所述的热阻热流传感器，其特征在于，所述外壳上安装有调节螺母。 
4.如权利要求1所述的热阻热流传感器，其特征在于，所述热电偶丝焊接点涂有绝缘漆。 
5.如权利要求1所述的热阻热流传感器，其特征在于，所述探芯与进水管道和出水管道之间具有一后盖。 
6.如权利要求1所述的热阻热流传感器，其特征在于，所述热电偶丝为康铜丝。 
7.如权利要求1所述的热阻热流传感器，其特征在于，所述热电偶丝为纯铜丝。 
8.如权利要求1所述的热阻热流传感器，其特征在于，所述热电偶丝具有多组，每组两根，其材质分别为为康铜丝和纯铜丝。 
CN201320830941.9U 2013-12-15 2013-12-15 一种热阻热流传感器 Expired - Lifetime CN203643052U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103698057A (zh) * 2013-12-15 2014-04-02 绵阳富林岚科技有限责任公司 一种热阻热流传感器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103698057A (zh) * 2013-12-15 2014-04-02 绵阳富林岚科技有限责任公司 一种热阻热流传感器

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