WO2011103751A1 - Electrode level sensor - Google Patents

Electrode level sensor Download PDF

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Publication number
WO2011103751A1
WO2011103751A1 PCT/CN2010/077616 CN2010077616W WO2011103751A1 WO 2011103751 A1 WO2011103751 A1 WO 2011103751A1 CN 2010077616 W CN2010077616 W CN 2010077616W WO 2011103751 A1 WO2011103751 A1 WO 2011103751A1
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WO
WIPO (PCT)
Prior art keywords
electrode
insulating ceramic
resistant
erosion
corrosion
Prior art date
Application number
PCT/CN2010/077616
Other languages
French (fr)
Chinese (zh)
Inventor
刘吉川
李义
Original Assignee
秦皇岛华电测控设备有限公司
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Publication date
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Publication of WO2011103751A1 publication Critical patent/WO2011103751A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/78—Adaptations or mounting of level indicators

Definitions

  • the present invention relates to the field of industrial measurement technology, and is a liquid level gauge component in a high temperature and high pressure environment.
  • the invention is developed for the liquid level measurement of the nuclear power nuclear evaporator and a voltage regulator, and can also be applied to the measurement of other high temperature and high pressure container liquid levels. Background technique
  • the existing electrode liquid level measuring device is composed of an electrode (3), a lead-out box (1) and a fixing base (2) as shown in FIG.
  • the function of the lead-out box (1) is to take out the steam water in the high-temperature high-pressure vessel by using the principle of the connected device, and measure the liquid level in the lead-out box to obtain the water level in the container; solder the fixing seat (2) to the lead-out box (1)
  • the electrode (3) is mounted on the fixing seat (2) by using a gland (6), a flexible sealing packing ring (4), and a gasket (5) for flexible sealing.
  • the electrode (3) structure is such that the electrode head (7) and the electrode shoulder plate (8) are welded together by brazing (10) through an insulating ceramic tube (9).
  • This device uses different vapor and liquid conductivity to measure the liquid level in the container at this time.
  • the disadvantage is that when the inside of the lead-out box (1) is filled with high temperature and high-pressure vapor, the soldering of the insulating ceramic tube (9) and the insulating ceramic tube (9) due to the fluctuation of the liquid level and the corrosiveness of the liquid Constantly being washed and corroded, it is easy to cause solder joint de-soldering and ceramic tube corrosion, resulting in electrode leakage, great safety hazards and frequent equipment maintenance. Summary of the invention
  • An electrode liquid level sensor consisting of an electrode, a lead-out box and a fixing base. It is characterized by the innovation of the structure and materials of the electrode: Firstly, the electrode core made of erosion-resistant and corrosion-resistant metal material is inserted into the insulating ceramic made of erosion-resistant and corrosion-resistant ceramics. The brazing is also used for welding, and the insulating ceramics made of the same insulating ceramic are placed on the electrode core and brazed.
  • the invention has the beneficial effects that the electrode core and the insulating ceramic are made of erosion-resistant and corrosion-resistant materials.
  • the electrode core and the partially insulating ceramic are used, and when the liquid level fluctuates, the electrode core is washed.
  • Figure 1 Schematic diagram of the original electrode level sensor.
  • FIG. 1 Schematic diagram of the structure of the present invention.
  • the electrode core (3-1) made of a washable and corrosion-resistant metal material is first inserted into an insulating ceramic 1 (3-2) made of a washable and corrosion-resistant ceramic and brazed (10). ) soldering, then insulating ceramic 2 (3-3) made of the same ceramic to the electrode core (3-1) and soldering with brazing (10) to form the electrode (3); by using the gland (6) ), flexible sealing packing ring (4), gasket (5)
  • the flexible sealing installation fixes the electrode (3) on the fixing seat (2) welded to the outer wall of the outlet box (1); the liquid level at the time in the outlet box (1) is measured by using different vapor and liquid conductivity.
  • the insulating ceramic is made of erosion-resistant and corrosion-resistant ceramic material, avoiding high temperature, high pressure liquid flushing electrode brazing (10) weld seam, making the electrode have a longer service life and easier maintenance, which can effectively avoid the electrode.
  • a security incident such as a leak.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

An electrode level sensor comprises an electrode (3), an outlet box (1), and a retaining bracket (2). The electrode (3) is installed in the retaining bracket (2) provided on the outlet box (1), an electrode core (3-1) is inserted in and brazed with the first insulating ceramic (3-2) and the second insulating ceramic (3-3), which form the electrode (3). The electrode core (3-1) is made of erosion and corrosion resistant metal; and the first insulating ceramic (3-2) and the second insulating ceramic (3-3) are made of erosion and corrosion resistant ceramic.

Description

电极液位传感器 技术领域 本发明涉及工业测量技术领域， 为高温、高压环境下的液位计部件。本发明 针对核工业核电蒸发器和一回稳压器的液位测量进行研制， 也可以应用于其他 高温、 高压容器液位的测量。 背景技术  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of industrial measurement technology, and is a liquid level gauge component in a high temperature and high pressure environment. The invention is developed for the liquid level measurement of the nuclear power nuclear evaporator and a voltage regulator, and can also be applied to the measurement of other high temperature and high pressure container liquid levels. Background technique
现有的电极液位测量装置如图 1所示， 由电极（3)、 引出箱 （1 )和固定座 ( 2 ) 组成。 引出箱 （1 ) 的作用是利用连通器原理将高温高压容器内的汽水引 出， 测量引出箱内的液位即可得出容器内的水位； 将固定座 （2) 焊接在引出箱 ( 1 ) 上， 再通过使用压盖 （6)、 柔性密封填料环 （4)、 衬垫 （5 ) 进行柔性密 封将电极 （3 ) 安装在固定座 （2 ) 上。 其中电极 （3 ) 结构是电极封头 （7) 与 电极肩盘 （8) 通过绝缘陶瓷管 （9) 用钎焊 （10) 焊接在一起。 此装置利用汽、 液电导率不同， 来测量容器内此时的液位。其缺点是引出箱（1 ) 内部充满高温、 高压汽液时， 由于液位的波动及液体的腐蚀性使得绝缘陶瓷管 （9) 两端的钎焊 ( 10) 焊点和绝缘陶瓷管 （9) 不断受到冲刷和腐蚀， 极易造成焊点脱焊和陶瓷 管腐蚀， 导致电极泄露， 存在极大的安全隐患和频繁的设备维护。 发明内容  The existing electrode liquid level measuring device is composed of an electrode (3), a lead-out box (1) and a fixing base (2) as shown in FIG. The function of the lead-out box (1) is to take out the steam water in the high-temperature high-pressure vessel by using the principle of the connected device, and measure the liquid level in the lead-out box to obtain the water level in the container; solder the fixing seat (2) to the lead-out box (1) Then, the electrode (3) is mounted on the fixing seat (2) by using a gland (6), a flexible sealing packing ring (4), and a gasket (5) for flexible sealing. The electrode (3) structure is such that the electrode head (7) and the electrode shoulder plate (8) are welded together by brazing (10) through an insulating ceramic tube (9). This device uses different vapor and liquid conductivity to measure the liquid level in the container at this time. The disadvantage is that when the inside of the lead-out box (1) is filled with high temperature and high-pressure vapor, the soldering of the insulating ceramic tube (9) and the insulating ceramic tube (9) due to the fluctuation of the liquid level and the corrosiveness of the liquid Constantly being washed and corroded, it is easy to cause solder joint de-soldering and ceramic tube corrosion, resulting in electrode leakage, great safety hazards and frequent equipment maintenance. Summary of the invention
为了克服原有技术的缺点， 本发明的目的是提供一种耐冲刷、 耐腐蚀、 不 易泄露的新型电极液位传感器。  In order to overcome the disadvantages of the prior art, it is an object of the present invention to provide a novel electrode level sensor that is resistant to erosion, corrosion, and leakage.
本发明的目的是通过以下技术方案实现的： 一种电极液位传感器， 由电极、 引出箱和固定座组成。 其特征是电极的结构和材料进行了创新： 先将用耐冲刷 和耐腐蚀金属材料制作的电极芯插入用耐冲刷和耐腐蚀陶瓷做成的绝缘陶瓷① 中并用钎焊焊接， 再将用同样绝缘陶瓷做成绝缘陶瓷②套到电极芯上并用钎焊 焊接。 The object of the present invention is achieved by the following technical solutions: An electrode liquid level sensor consisting of an electrode, a lead-out box and a fixing base. It is characterized by the innovation of the structure and materials of the electrode: Firstly, the electrode core made of erosion-resistant and corrosion-resistant metal material is inserted into the insulating ceramic made of erosion-resistant and corrosion-resistant ceramics. The brazing is also used for welding, and the insulating ceramics made of the same insulating ceramic are placed on the electrode core and brazed.
本发明的有益效果是， 电极芯和绝缘陶瓷以耐冲刷和耐腐蚀材料制作， 当 电极浸入在高温高压汽液体中的部分为电极芯和部分绝缘陶瓷， 当液位波动时 冲刷的是电极芯和绝缘陶瓷， 冲刷腐蚀不到钎焊焊缝， 避免了因冲刷和腐蚀而 造成的电极泄露， 使电极的使用寿命延长 5〜10倍。 附图说明  The invention has the beneficial effects that the electrode core and the insulating ceramic are made of erosion-resistant and corrosion-resistant materials. When the electrode is immersed in the high-temperature and high-pressure vapor liquid, the electrode core and the partially insulating ceramic are used, and when the liquid level fluctuates, the electrode core is washed. And insulating ceramics, scouring and corrosion less than brazing welds, avoiding electrode leakage caused by erosion and corrosion, and extending the service life of the electrode by 5 to 10 times. DRAWINGS
图 1: 原电极液位传感器的结构示意图。  Figure 1: Schematic diagram of the original electrode level sensor.
图 2: 本发明的结构示意图。  Figure 2: Schematic diagram of the structure of the present invention.
图中： 1引出箱、 2固定座、 3电极、 4柔性密封填料环、 5衬垫、 6压盖、 7电极封头、 8电极肩盘、 9绝缘陶瓷管、 10钎焊、 3-1 电极芯、 3-2绝缘陶瓷 ①、 3-3绝缘陶瓷②。  In the figure: 1 lead box, 2 fixing seat, 3 electrode, 4 flexible sealing packing ring, 5 pad, 6 gland, 7 electrode head, 8 electrode shoulder plate, 9 insulated ceramic tube, 10 brazing, 3-1 Electrode core, 3-2 insulating ceramic 1, 3-3 insulating ceramic 2.
见图 2， 先将用耐冲刷和耐腐蚀金属材料制作的电极芯 （3-1) 插入用耐冲 刷和耐腐蚀陶瓷做成的绝缘陶瓷① （3-2) 中并用钎焊 （10) 焊接， 再将用同样 陶瓷做成的绝缘陶瓷② （3-3) 套到电极芯 （3-1) 上并用钎焊 （10) 焊接， 这 样组成电极 （3); 通过使用压盖 （6)、 柔性密封填料环 （4)、 衬垫 （5) 进行柔 性密封安装将电极（3) 固定安装在焊接在引出箱（1)外壁上的固定座（2)上， 利用汽、 液电导率不同， 来测量引出箱内此时的液位。 具体实施方式  See Figure 2. Insert the electrode core (3-1) made of erosion-resistant and corrosion-resistant metal material into the insulating ceramic 1 (3-2) made of erosion-resistant and corrosion-resistant ceramics and solder with brazing (10). Then, the insulating ceramic 2 (3-3) made of the same ceramic is placed on the electrode core (3-1) and soldered by brazing (10) to form the electrode (3); by using the gland (6), Flexible sealing packing ring (4), gasket (5) for flexible sealing installation The electrode (3) is fixedly mounted on the fixing seat (2) welded on the outer wall of the outlet box (1), using different vapor and liquid conductivity. To measure the liquid level in the lead-out box at this time. detailed description
如图 2所示， 先将用耐冲刷和耐腐蚀金属材料制作的电极芯 （3-1) 插入用 耐冲刷和耐腐蚀陶瓷做成的绝缘陶瓷① （3-2) 中并用钎焊 （10) 焊接， 再将用 同样陶瓷做成的绝缘陶瓷② （3-3) 套到电极芯 （3-1) 上并用钎焊 （10) 焊接， 这样组成电极 （3); 通过使用压盖 （6)、 柔性密封填料环 （4)、 衬垫 （5) 进行 柔性密封安装将电极 （3) 固定安装在焊接在引出箱 （1) 外壁上的固定座 （2) 上； 利用汽、 液电导率不同， 来测量引出箱 （1) 内此时的液位。 这样， 暴露在 引出箱 （1) 内高温、 高压汽液体里的只有部分电极芯 （3-1) 和部分绝缘陶瓷 ① （3-2)， 而电极芯 （3-1) 是由耐冲刷和耐腐蚀金属材料制作， 绝缘陶瓷是由 耐冲刷和耐腐蚀陶瓷材料制作， 避免了高温、 高压液体冲刷电极钎焊 （10) 焊 缝， 使得电极的使用寿命更长， 更易维护， 可有效避免电极泄露等安全事故的 发生。 As shown in Figure 2, the electrode core (3-1) made of a washable and corrosion-resistant metal material is first inserted into an insulating ceramic 1 (3-2) made of a washable and corrosion-resistant ceramic and brazed (10). ) soldering, then insulating ceramic 2 (3-3) made of the same ceramic to the electrode core (3-1) and soldering with brazing (10) to form the electrode (3); by using the gland (6) ), flexible sealing packing ring (4), gasket (5) The flexible sealing installation fixes the electrode (3) on the fixing seat (2) welded to the outer wall of the outlet box (1); the liquid level at the time in the outlet box (1) is measured by using different vapor and liquid conductivity. Thus, only a portion of the electrode core (3-1) and a portion of the insulating ceramic 1 (3-2) exposed to the high temperature, high pressure vapor liquid in the outlet box (1), and the electrode core (3-1) are resistant to erosion and Made of corrosion-resistant metal material, the insulating ceramic is made of erosion-resistant and corrosion-resistant ceramic material, avoiding high temperature, high pressure liquid flushing electrode brazing (10) weld seam, making the electrode have a longer service life and easier maintenance, which can effectively avoid the electrode. The occurrence of a security incident such as a leak.

Claims

权 利 要 求 书 Claim
1、 一种电极液位传感器， 由电极 （3)、 引出箱 （1) 和固定座 （2) 组成， 其特征是安装在位于引出箱（ 1 )上的固定座（ 2 )上的电极（ 3 )是由电极芯（ 3-1 ) 插入绝缘陶瓷① （3-2) 中并用钎焊焊接， 再将绝缘陶瓷② （3-3) 套到电极芯 (3-1) 上并用钎焊焊接； 所述电极芯 （3-1) 是采用耐冲刷和耐腐蚀的金属材 料制作； 所述绝缘陶瓷 （3-2) 和绝缘陶瓷 （3-3) 是采用耐冲刷和耐腐蚀的陶 瓷制作。  1. An electrode level sensor comprising an electrode (3), a lead-out box (1) and a holder (2), characterized by an electrode mounted on a holder (2) on the outlet box (1) ( 3) Insert the electrode core (3-1) into the insulating ceramic 1 (3-2) and solder it by soldering, then place the insulating ceramic 2 (3-3) on the electrode core (3-1) and solder it with brazing. The electrode core (3-1) is made of a metal material resistant to erosion and corrosion; the insulating ceramic (3-2) and the insulating ceramic (3-3) are made of ceramics resistant to erosion and corrosion.
PCT/CN2010/077616 2010-02-26 2010-10-09 Electrode level sensor WO2011103751A1 (en)

Applications Claiming Priority (2)

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CN201010131477.5 2010-02-26
CN201010131477.5A CN102072755B (en) 2010-02-26 2010-02-26 electrode liquid level sensor

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WO2011103751A1 true WO2011103751A1 (en) 2011-09-01

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CN102359806B (en) * 2011-09-20 2012-11-28 西安交通大学 Liquid metal level probe and using method thereof
CN103033232A (en) * 2011-10-10 2013-04-10 北京华阳利民仪器有限公司 Liquid volume measuring device
CN102809403A (en) * 2012-06-06 2012-12-05 秦皇岛华电测控设备有限公司 Liquid level sensor with electrode
CN103308114B (en) * 2013-06-06 2015-12-02 山东默锐科技有限公司 The positive pole of liquid level emasuring device and sodium metal liquid level emasuring device
CN106996815B (en) * 2016-07-26 2023-11-28 东风汽车电子有限公司 Water level sensor

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WO2009095186A1 (en) * 2008-01-31 2009-08-06 Daimler Ag Sensor for detecting the level of a liquid in a tank and fuel cell system with such a sensor

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