WO2014101273A1 - 测量管全绝缘一体化的电磁流量传感器 - Google Patents

测量管全绝缘一体化的电磁流量传感器 Download PDF

Info

Publication number
WO2014101273A1
WO2014101273A1 PCT/CN2013/001363 CN2013001363W WO2014101273A1 WO 2014101273 A1 WO2014101273 A1 WO 2014101273A1 CN 2013001363 W CN2013001363 W CN 2013001363W WO 2014101273 A1 WO2014101273 A1 WO 2014101273A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring tube
flow sensor
electromagnetic flow
measuring
electromagnetic
Prior art date
Application number
PCT/CN2013/001363
Other languages
English (en)
French (fr)
Inventor
梁文琪
梁林新
许鸣春
陶育春
Original Assignee
上海都华实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海都华实业有限公司 filed Critical 上海都华实业有限公司
Publication of WO2014101273A1 publication Critical patent/WO2014101273A1/zh

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/588—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters combined constructions of electrodes, coils or magnetic circuits, accessories therefor

Definitions

  • the invention relates to a structural improvement of an electromagnetic flow sensor, in particular to an electromagnetic flow sensor suitable for full insulation integration of a measuring tube for heat metering, and belongs to the technical field of flow metering instruments. Background technique
  • the heat meter is mainly composed of a flow sensor for measuring the flow rate of the heat transfer fluid flowing through the heat exchanger, a pair of temperature sensors for measuring the inlet and outlet temperatures of the heat exchanger, and a thermal energy intelligent controller. .
  • the heat obtained or absorbed by the user's heat exchange system is then calculated by a thermodynamic calculation formula.
  • the electromagnetic flow sensor As a meter for detecting liquid flow, the electromagnetic flow sensor has many unique excellent performances.
  • the measuring pipe has no obstruction and movable parts. It has no special requirements except for the conductivity of the measured fluid. Therefore, it is especially suitable for The condition of poor quality water quality of centralized heating fluids.
  • the measurement system of the traditional electromagnetic flow sensor is relatively complicated. It is necessary to consider the extremely high insulation strength of the measuring tube.
  • the insulator is lining the rubber in the measuring tube wall, and it is necessary to ensure the reliable operation of the electrode system as the signal for collecting the induced electromotive force.
  • the electrode base is welded, the product structure is complicated, the processing technology is cumbersome, the production line is large and mass production is difficult, and the production cost is high, thereby limiting the high-performance electromagnetic flow sensor in a large amount.
  • the object of the present invention is to provide an electromagnetic flow sensor with simple structure, simple processing technology, excellent sealing performance and low cost, and full-insulation integrated measuring tube.
  • the high-performance electromagnetic flow sensor is introduced into the field of heating measuring instruments, and the heat meter is improved.
  • the field operates with durability and reliability.
  • the technical solution of the measuring tube is: an electromagnetic flow sensor integrated with the whole insulation of the measuring tube, comprising a sensor housing, a pair of exciting coils placed in the inner cavity of the sensor housing, disposed between the exciting coils Measuring tube, and a pair of measuring electrodes and a pair of grounding electrodes disposed on the inner wall of the measuring tube, characterized in that: the measuring tube is completely insulated and integrated, the measuring electrode, the grounding electrode and the measuring tube wall are directly embedded
  • the fixed sealing connection, the aluminum alloy side plates on the front and rear sides of the sensor housing and the stainless steel external pipes placed at the two ends of the measuring tube are connected by high pressure into the die casting connection.
  • the measuring electrode, the grounding electrode and the connecting portion of the measuring tube wall are sealed by a sealing column
  • the circumferential surface of the high-pressure embedded die-casting end of the external conduit is provided with an embedded groove and a plurality of torsion-resistant recesses.
  • a circular "o" shaped sealing groove is arranged on the end surface of the connecting portion of the measuring tube and the external conduit, and the sealing is butted without leakage.
  • the measuring tube has a venturi tubular shape or a straight tube shape.
  • the measuring tube is made of an electrically insulating plastic or polymer material.
  • the invention has the advantages of compact structure and simple assembly.
  • the measuring tube is injection-molded once, and the reliability and sealing level of the measuring electrode and the grounding electrode seal are improved, the structure and processing technology of the electromagnetic flow sensor are simplified, the production of the electromagnetic flow sensor is realized, the mass production is large, and the mass production is reduced. Manufacturing costs have created the necessary basic conditions.
  • the high-pressure embedded die-casting high-strength connection structure of the two kinds of metal materials that can not be connected to each other not only ensures the tight connection of the external pipe and the integrated measuring pipe member, but also improves the overall corrosion resistance of the instrument, thereby Entering the market for a wide range of civilian applications creates conditions that are particularly suitable for use as electromagnetic heat meters for detecting the flow of heat transfer fluids.
  • Figure 1 is a schematic structural view of the present invention
  • Fig. 2 is a schematic view showing the structure of a stainless steel external pipe embedded in the circumferential surface of the die-casting end and a plurality of anti-torsion pits.
  • excitation coil A 1 excitation coil A
  • 2 measuring electrode
  • 3 grounding electrode
  • 4 measuring tube 5—excitation line ⁇ B
  • 6 aluminum alloy casing
  • 7 aluminum alloy side plate
  • 8 stainless steel external pipe.
  • an electromagnetic flow sensor integrated with a measuring tube and fully insulated comprising a sensor housing, a pair of exciting coils 1 and 5 placed in the inner cavity of the sensor housing, and placed in the excitation a measuring tube 4 between the coils, and a pair of measuring electrodes 2 and a pair of grounding electrodes 3 disposed on the inner wall of the measuring tube 4, wherein the measuring tube 4 is configured by a fully insulated integrated structure, and the measuring electrode 2
  • the grounding electrode 3 and the wall of the measuring tube 4 are directly embedded and fixedly sealed, and the aluminum alloy side plate 7 on the front and rear sides of the sensor housing and the stainless steel external connecting tube 8 disposed at both ends of the measuring tube 4 are embedded in a die-cast connection.
  • the measuring electrode 2, the grounding electrode 3 and the tube-wall joint portion of the measuring tube 4, and the sealing seal column are provided with a plane sealing structure of an "O"-shaped sealing jaw.
  • the external conduit 8 is embedded on the circumferential surface of the high-pressure embedded die-casting joint with embedded grooves and several anti-torsion pits (see Figure 2) to ensure two different metal parts (aluminum side plate 7 and stainless steel external pipe 8).
  • High-pressure die-casting is embedded with high-strength tight joints.
  • a circular "O" shaped sealing groove is formed on the end surface of the joint portion of the measuring tube 4 and the external conduit 8 to achieve a leak-free sealing butt joint.
  • the inner cavity of the measuring tube may be in the form of a venturi tube (see Fig. 1) or a straight tube structure, and may be made of an electrically insulating plastic material or a polymer material.
  • the electromagnetic flow sensor can realize the assembly and assembly operation of the assembly line, mass production and expensive production and manufacturing costs. The decline has created the necessary basic conditions. It is particularly suitable for use as an electromagnetic heat meter for detecting the flow rate of a heat transfer fluid.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

一种适用于供热计量的测量管全绝缘一体化的电磁流量传感器，属流量计量仪表技术领域。其中，测量管（4）釆用全绝缘一体化的结构，测量电极（2）、接地电极（3）和所述测量管（4）管壁直接嵌入式固定密封连接，传感器壳体前后两侧铝合金侧板（7）与置于所述测量管（4）两端的不锈钢外接导管（8）嵌入压铸连接。有益效果是：大大简化了电磁流量传感器结构和加工工艺，结构紧凑、组装简便，测量管注塑一次成形，提高了测量电极和接地电极密封的可靠性和密封等級，为电磁流量传感器能够实现流水线生产组装操作和大规模的量产、下降制造成本，进而进入广阔的民用市场领域创造了条件。特别适宜于作为检测载热流体流量的电磁式热量表。

Description

测量管全绝缘一体化的电磁流量传感器
技术领域
本发明涉及一种电磁流量传感器的结构改进， 尤其涉及一种适用于供热 计量的测量管全绝缘一体化的电磁流量传感器， 属流量计量仪表技术领域。 背景技术
随着各级政府对供热计量改革工作给予前所未有的重视并逐年加大推进 力度， 供热体制改革和供热计量市场取得了明显的成效， 全面推进供热分户 计量收费工作， 在未来几年将获得飞速发展。 而作为分户供热计量的终端用 户， 百姓最关心的就是希望用热量能像用水， 用电一样， 可以客观合理的根 据用量实际的多少来进行缴费。但目前市场占有率达 90% 以上的各种型号的 超声波式热量表， 不太适应国内现有的供热流体水质。 水质硬度高导至结垢、 甚至水中混有杂质， 影响仪表的正常运行。 据统计， 目前能够运行一个采暖 期的热量表不足 30% ， 存在不少质量隐患。
热量表主要由一台用以测量流经热交换器的载热流体流量的流量传感 器， 一对分别用以测量热交换器的进水和出水温度的温度传感器， 以及一台 热能智能运算器构成。 然后通过热力学计算公式计算出用户热交换系统获得 或吸收的热量。 电磁流量传感器作为检测液体流量的计量仪表， 具有许多独 特的优良性能， 测量管道无阻流件和可动部件， 除要求被测流体具有一定的 电导率外， 并无其它特殊要求， 因此特别适合于集中供热流体水质较差的工 况。 但传统的电磁流量传感器的测量系统结构比较复杂， 既要考虑测量管极 高的绝缘強度， 在测量管壁内衬橡胶等绝缘体， 还要为保证作为采集感应电 动势信号的电极系统可靠正常工作， 而在不锈钢测量导管上烧焊电极基座等， 产品结构复杂， 加工工艺繁琐， 难以流水线生产和大规模组装量产， 生产成 本高， 因此限制了高性能的电磁流量传感器在量大面广的民用产品领域的应 用推广。 发明内容
本发明的目的是提供一种结构简单、 加工工艺简便、 密封性能优良、 成 本低廉的测量管全绝缘一体化的电磁流量传感器， 将高性能的电磁流量传感 器引入供热计量仪表领域， 提升热量表的现场运行耐久性和可靠性。
为达到上述目的， 釆取的技术方案是： 测量管全绝缘一体化的电磁流量 传感器， 包括传感器壳体、 置于所述传感器壳体内腔的一对励磁线圈， 置于 所述励磁线圈之间的测量管、 以及在所述测量管内壁设置的一对测量电极和 一对接地电极， 其特征在于： 测量管全绝缘一体化结构， 测量电极、 接地电 极和所述测量管管壁直接嵌入式固定密封连接， 传感器壳体前后两侧铝合金 侧板与置于所述测量管两端的不锈钢外接导管高压嵌入压铸连接。
所述测量电极、 接地电极和所述测量管管壁结合部， 釆用密封压柱加
"0" 形密封圏的平面密封结构。
所述外接导管的高压嵌入压铸连接端圆周面置有嵌入凹槽和数个抗扭力 凹坑。
所述测量管与外接导管结合部端面置有圆形 "o" 形圏密封槽， 无泄漏 密封对接。
所述测量管内腔呈文丘利管状， 或呈直通管形状。
所述测量管材质为电绝缘的塑料或高分子材料。
本发明的有益效果是： 结构紧凑、 组装简便。 测量管注塑一次成形， 同 时提高了测量电极和接地电极密封的可靠性和密封等级， 简化了电磁流量传 感器的结构和加工工艺， 为电磁流量传感器实现流水线生产和大规模的量产、 下降昂贵的生产制造成本， 创造了必须的基本条件。 此外， 二种不能相互悍 接的金属材质高压嵌入压铸高强度连接结构， 不仅保证了外接导管与一体化 的测量管构件紧密地无泄漏对接， 又提高了仪表的整体抗腐蝕能力， 从而为 产品进入市场广阔的民用领域创造了条件， 特别适宜于用作检测载热流体流 量的电磁式热量表。 附图说明
以下结合附图和具体实施方式， 对本发明作进一步说明。
图 1 为本发明的结构示意图； 图 2 为不锈钢外接导管高压嵌入压铸连接端圆周面上嵌入凹槽和数个抗 扭力凹坑结构示意图。
图中： 1一励磁线圈 A ； 2—测量电极； 3—接地电极； 4一测量管： 5— 励磁线圏 B ； 6—铝合金外壳； 7—铝合金侧板； 8—不锈钢外接导管。 具体实施方式
图 1 为本发明结构示意图， 由图可见： 测量管全绝缘一体化的电磁流量 传感器， 包括传感器壳体、 置于所述传感器壳体内腔的一对励磁线圈 1、 5, 置于所述励磁线圈之间的测量管 4、 以及在所述测量管 4 内壁设置的一对测 量电极 2 和一对接地电极 3， 其特征在于： 测量管 4 釆用全绝缘一体化的结 构， 测量电极 2、接地电极 3 和所述测量管 4 管壁直接嵌入式固定密封连接， 传感器壳体前后两侧铝合金侧板 7 与置于所述测量管 4两端的不锈钢外接导 管 8 嵌入压铸连接。
所述测量电极 2、 接地电极 3 和所述测量管 4 管壁结合部， 釆用密封压 柱加 "O" 形密封圏的平面密封结构。
外接导管 8 高压嵌入压铸连接端圆周面上置有嵌入凹槽和数个抗扭力凹 坑（见图 2)， 以保证二种不同材质金属部件 （铝合金侧板 7 和不锈钢外接导 管 8 ) 在高压压铸下相互嵌入高强度紧密连接。
所述测量管 4 与外接导管 8 结合部端面置有圆形 "O" 形圏密封槽，以 便实现无泄漏密封对接。
所述测量管内腔可以呈文丘利管形式 （见图 1 )， 也可以为直通管结构形 式， 釆用电气绝缘的塑料材料或高分子材料制作。
测量管全绝缘一体化的电磁流量传感器的一对励磁线圏、 置于所述一对励磁 线圏之间的测量管、 与所述测量管的管壁固定连接的一对测量电极、 一对接 地电极， 以及二种不同材质金属部件 铝合金侧板 7 和不锈钢外接导管 8)在 高压压铸下相互嵌入紧密连接。 整体结构均为由模具化的零部件构成， 组装 时只要按照工艺图纸、 技术文件对号入座装配施工即可， 为电磁流量传感器 能够实现流水线生产组装操作、 大规模的量产、 昂贵的生产制造成本的下降， 创造了必须的基本条件。 特别适宜于用作检测载热流体流量的电磁式热量表。

Claims

权 利 要 求
1. 测量管全绝缘一体化的电磁流量传感器， 包括传感器壳体、 置于所述 传感器壳体内腔的一对励磁线圈， 置于所述励磁线圈之间的测量管、 以及在 所述测量管内壁设置的一对测量电极和一对接地电极， 其特征在于： 测量管 全绝缘一体化结构， 测量电极、 接地电极和所述测量管管壁直接嵌入式固定 密封连接， 传感器壳体前后两侧铝合金侧板与置于所述测量管两端的不锈钢 外接导管高压嵌入压铸连接。
2. 根据权利要求 1 所述测量管全绝缘一体化的电磁流量传感器， 其特征 在于： 所述测量电极、 接地电极和所述测量管管壁结合部， 釆用密封压柱加
"O" 形密封圏的平面密封结构。
3. 根据权利要求 1 所述测量管全绝缘一体化的电磁流量传感器， 其特征 在于： 所述外接导管的高压嵌入压铸连接端圆周面置有嵌入凹槽和数个抗扭 力凹坑。
4. 根据权利要求 1 所述测量管全绝缘一体化的电磁流量传感器， 其特征 在于： 所述测量管与外接导管结合部端面置有圆形 "0" 形圏密封槽， 无泄 漏密封对接。
5. 根据权利要求 1 所述测量管全绝缘一体化的电磁流量传感器， 其特征 在于： 所述测量管内腔呈文丘利管状， 或呈直通管形状。
6. 根据权利要求 1， 4， 5 中任一项权利要求所述测量管全绝缘一体化的 电磁流量传感器， 其特征在于： 所述测量管材质为电绝缘的塑料或高分子材
PCT/CN2013/001363 2012-12-24 2013-11-11 测量管全绝缘一体化的电磁流量传感器 WO2014101273A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2012105644487A CN103017841A (zh) 2012-12-24 2012-12-24 测量管全绝缘一体化的电磁流量传感器
CN201210564448.7 2012-12-24

Publications (1)

Publication Number Publication Date
WO2014101273A1 true WO2014101273A1 (zh) 2014-07-03

Family

ID=47966710

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/001363 WO2014101273A1 (zh) 2012-12-24 2013-11-11 测量管全绝缘一体化的电磁流量传感器

Country Status (2)

Country Link
CN (1) CN103017841A (zh)
WO (1) WO2014101273A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103017841A (zh) * 2012-12-24 2013-04-03 上海埃克仪器仪表有限公司 测量管全绝缘一体化的电磁流量传感器
US20190257677A1 (en) * 2017-04-28 2019-08-22 Aichi Tokei Denki Co., Ltd. Electromagnetic flowmeter

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045646A1 (en) * 1980-08-01 1982-02-10 Fischer & Porter Company Unitary electromagnetic flowmeter with sealed coils
CN2098009U (zh) * 1991-07-12 1992-03-04 上海光华仪表厂 一种电磁流量计
CN2733318Y (zh) * 2004-09-22 2005-10-12 上海埃克仪器仪表有限公司 一种电磁流量传感器
CN200962044Y (zh) * 2006-10-11 2007-10-17 上海埃克仪器仪表有限公司 内套式微小通径电磁流量传感器
CN101655382A (zh) * 2008-08-18 2010-02-24 Abb技术股份公司 流量测量装置
CN101750122A (zh) * 2008-12-01 2010-06-23 上海一诺仪表有限公司 一种电磁流量计
DE202008017789U1 (de) * 2008-08-18 2010-07-22 Abb Technology Ag Durchflussmesseinrichtung
CN103017841A (zh) * 2012-12-24 2013-04-03 上海埃克仪器仪表有限公司 测量管全绝缘一体化的电磁流量传感器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2559522B2 (ja) * 1989-06-16 1996-12-04 株式会社日立製作所 電磁流量計
EP0762084A3 (de) * 1995-09-12 1998-04-22 Georg Fischer Rohrleitungssysteme AG Magnetisch-induktiver Durchflussmesser
CN2580408Y (zh) * 2002-12-01 2003-10-15 中国石化集团江汉石油管理局仪表厂 井下电磁流量计传感器
DE202005001549U1 (de) * 2005-02-01 2005-04-21 Abb Patent Gmbh Magnetisch-induktives Durchflussmessgerät
CN202255491U (zh) * 2011-09-16 2012-05-30 开封威利流量仪表有限公司 电磁流量传感器测量管

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045646A1 (en) * 1980-08-01 1982-02-10 Fischer & Porter Company Unitary electromagnetic flowmeter with sealed coils
CN2098009U (zh) * 1991-07-12 1992-03-04 上海光华仪表厂 一种电磁流量计
CN2733318Y (zh) * 2004-09-22 2005-10-12 上海埃克仪器仪表有限公司 一种电磁流量传感器
CN200962044Y (zh) * 2006-10-11 2007-10-17 上海埃克仪器仪表有限公司 内套式微小通径电磁流量传感器
CN101655382A (zh) * 2008-08-18 2010-02-24 Abb技术股份公司 流量测量装置
DE202008017789U1 (de) * 2008-08-18 2010-07-22 Abb Technology Ag Durchflussmesseinrichtung
CN101750122A (zh) * 2008-12-01 2010-06-23 上海一诺仪表有限公司 一种电磁流量计
CN103017841A (zh) * 2012-12-24 2013-04-03 上海埃克仪器仪表有限公司 测量管全绝缘一体化的电磁流量传感器

Also Published As

Publication number Publication date
CN103017841A (zh) 2013-04-03

Similar Documents

Publication Publication Date Title
CN100533133C (zh) 热管平板式导热系数测定仪
CN203758764U (zh) 一种换热器集成性能综合测试系统
CN206402082U (zh) 直线电机动子
CN201177465Y (zh) 燃气热水器用冷凝式换热器
WO2014026471A1 (zh) 一种即热式电加热管
WO2014101273A1 (zh) 测量管全绝缘一体化的电磁流量传感器
CN201652803U (zh) 一种改进型保温水箱
CN106645284A (zh) 一种圆管材料导热系数测量系统及其测量方法
WO2021017544A1 (zh) 一种热水器用电磁发热体组件
CN200996922Y (zh) 防垢性能评价试验装置
CN1793791A (zh) 温差流量计及热表
CN203837530U (zh) 高效节能列管式换热器
CN201034371Y (zh) 即热式空气源热水器水箱
CN204881719U (zh) 测量腔体无内衬的电磁流量传感器
CN201653951U (zh) 热管功率测试装置
CN105067055A (zh) 测量腔体无内衬的电磁流量传感器
CN201159692Y (zh) 一种太阳能热管综合测试装置
CN204255418U (zh) 大口径超声波测量管段
CN209400026U (zh) 一种化工超声波流量计的冷却装置
CN203908011U (zh) 采用金属颗粒作为换热媒介的电加热装置
CN106198613A (zh) 颗粒堆积床流动传热研究实验装置
CN203785228U (zh) 一种筒式加热器
CN206787740U (zh) 一种用于超声波热量表的双声道管体
CN203632891U (zh) 一种加热装置
CN204963928U (zh) 一种带隔热垫的流量表

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13867479

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13867479

Country of ref document: EP

Kind code of ref document: A1