CN2293804Y - Capacity continuous detection level meter - Google Patents

Capacity continuous detection level meter Download PDF

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Publication number
CN2293804Y
CN2293804Y CN 97203196 CN97203196U CN2293804Y CN 2293804 Y CN2293804 Y CN 2293804Y CN 97203196 CN97203196 CN 97203196 CN 97203196 U CN97203196 U CN 97203196U CN 2293804 Y CN2293804 Y CN 2293804Y
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CN
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Prior art keywords
metal
converter
wire
end
metal tube
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CN 97203196
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Chinese (zh)
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郭金运
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郭金运
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Abstract

The utility model relates to a capacitance type continuous detection level meter, comprising a capacitance-frequency or voltage converter and a capacitance type probe. The probe is composed of a metal pipe as a side pole and a metal wire as a central pole; the metal pipe is provided with a hole on a section of pipe wall, and is provided with an insulator at one end head; the metal wire is arranged at the axle wire of the metal pipe. The level meter has the advantages of simple structure, easy manufacture, convenient installation and high detecting precision.

Description

电容式连续检测液位仪 The capacitive level gauge is continuously detected

本实用新型涉及一种液位检测仪,特别是涉及一种在高温高压容器中检测液位仪。 The present invention relates to a liquid level detector, in particular, it relates to a method of detecting level gauge pressure vessel at an elevated temperature. 在化工行业中例如合成氨容器对液位测量非常重要,它直接关系到生产效率,关系到企业的经济效益。 Such as ammonia container is very important for level measurement in the chemical industry, it is directly related to productivity, related to the economic efficiency of enterprises. CN2120327U(9222208.8)内装式高压液位变送器,由一根外包绝缘层的金属导线传感器探头,两层弯曲定型的弹性薄壁管,一个高压密封接头和电容——电流转换电路组成,在说明书中提到,传感探头与液体介质及容器壳体构成一个电容,其电容量与液位高度有关,随液位高低而变化。 CN2120327U (9222208.8) built-in high-voltage level transmitter, a sensor probe of a metal wire outer insulation layer, the two layers of the bending elastic thin-walled tube shape, and a high pressure sealing joint capacitance - current conversion circuit, the specification mentioned, the sensing probe and the container housing the liquid medium constituting a capacitor, and its capacitance related to the liquid level, the liquid level varies. 该专利对外装式液位计是一种改进,但是存在一个缺点,由于该探头和高压容器壁在安装时不易保证平行度,造成液位和电容量之间的变化呈非线性关系,所以检测精度较低,调整安装的工作量较大,探头结构较复杂。 The Foreign mounted gauge patent is an improvement, but there is a drawback, since the pressure vessel and the wall of the probe during installation difficult to guarantee parallelism between the level and cause a change in the capacitance is nonlinear, the detection lower accuracy, a major adjustment of the installation work, the probe more complex structure.

为了克服上述缺陷,本实用新型的目的是,提高检测精度,设计电容式探头。 To overcome the above defects, the present invention aims to improve the detection accuracy, the capacitive probe design. 其技术方案是:一种电容式连续检测液位仪,含有电容一频率或电压转换器和电容式探头,电容式探头由一根在一段管壁上带有孔,端头装有绝缘子的金属管作边极,以安装在金属管中轴线处的金属丝作中心极构成。 The technical scheme is: continuously detecting a capacitive level gauge, comprising a capacitor or a frequency voltage converter and the capacitive probe, capacitance probe having holes in the wall of a section, with a metal tip insulator as edge electrode tube, mounted to the wire as the center axis of the metal tube in the electrode configuration.

金属丝一端固定在绝缘子上,另一端固定在金属管上部的密封绝缘涨套中,并通过引线与转换器检测接头A连接,金属管带孔段插入容器中固定在容器壁上,金属管上端部与转换器的检测接头B连接。 One end of the wire is fixed to the insulator, and the other end fixed to an upper portion of the sealing insulating jacket up metal tube, and by detecting the lead and joint A converter connected to the container fixed to the upper wall of the container, the metal tube is inserted into the metal tube perforated section joint detecting unit B is connected to the converter.

露于容器外部的金属管管壁上装有散热片,端部通过连接件与转换器的防护罩连接固紧。 Exposed to the outside of the container wall of finned metal pipe, the end portion of the fastening member is connected with the converter by the connection of the shield.

转换器的输出端接二次仪表输入端。 Second instrument output end of the converter inputs.

本实用新型具有积极效果,探头结构简单,容易制造、安装。 The present invention has a positive effect, the probe structure is simple, easy to manufacture, to install. 本项专利申请的检测是以金属插入管为边极,以安装在插入管中轴线处的金属丝为中心极,以及管中的液体介质所形成的电容量,随液位而变化,中心极和边极在制造安装中,容易保证平行度,以保证液位高低和电容量变化为线性关系,从而大大提高检测精度,成本低,安装方便。 Is a metal detector of the present patent application electrode side is inserted into the tube, a metal wire is mounted in the axis of the center pole is inserted into the tube, and a liquid medium the capacitance of the formed pipe, varies with the level, the center pole and a side electrode in the manufacture and installation, it is easy to ensure parallelism, and to ensure that the liquid level variation in the capacitance is linear, thus greatly improving the detection accuracy, low cost and easy installation.

图1为电容式连续检测液位仪的结构示意图;图2为本液位仪中电容——频率转换器的电路示意图。 FIG 1 is a schematic view of a capacitive level gauge is continuously detected; FIG. 2 in the capacitive liquid level gauge of the present - a circuit diagram of a frequency converter.

结合实施例进一步说明本实用新型的结构及工作原理。 In conjunction with examples further illustrate the present invention, the structure and working principle.

在图1中,1为电容——频率转换器,它将液位高低造成探头电容量变化量电讯号转化为频率变化讯号,送入二次仪表,直接显示出液位标高。 In Figure 1, 1 is the capacitance - frequency converter, it will cause the liquid level sensor of capacitance variation electrical signal into signal frequency changes, into the secondary instrument, showing a direct level elevation. 转化器的电路见图2。 Converter circuit shown in Figure 2. 在图2中本实施例采用一块NE555集成块外接有关电阻、电容做为电容、频率转换电路,A、B二点为待测电容接线柱,A接中心极,B接边极,电源12V,频率输出out接二次仪表。 In FIG. 2 embodiment employs an external manifold NE555 about resistance, capacitance as a capacitor, the frequency conversion circuit, A, B two o'clock as measured capacitor terminal, A contact center pole, B Edge electrode, power supply 12V, frequency output to two meters out. 2为电容频率转换器防护罩,3为防护罩连接法兰,4为金属管上端部连接法兰,5为露于容器外部金属管管壁上的横向散热器。 A frequency converter 2 as a capacitive shield, the shield 3 is connected to a flange, an upper end portion of the metal pipe 4 is connected to the flange, the heat sink 5 is exposed to the outside of the container lateral wall of the metal tube. 6为金属管上与容器固定连接法兰,7为容器伸出法兰与6配合固紧,8为金属管做为被测电容的边极,插入容器金属管段开有孔,孔的标号为14,9是金属丝为检测电容中心极,安装在金属管8的中轴线处,下端通过极固定器10固定在金属管端部的绝缘子11中心处,上端固定安装在金属管上端的密封绝缘涨套13中心处,并与转换器1中的检测接头A连接,15为绝缘子11中开的孔,容器中的溶液通过孔14和孔15流入金属管作为电容介质,12为转换器的输出引出线孔,其输出线接二次仪表输入端。 6 is fixedly connected with the container flange on the metal pipe, the container 7 with projecting fastening flange 6, 8 metal pipe as measured capacitance electrode side, the metal container is inserted into the pipe section with holes, the hole for the reference 14,9 capacitance is detected as the center wire electrode, mounted in the axis of the metal tube 8, by sealing the lower end of the insulating electrode holder 10 is fixed to the insulator 11 at the center of the pipe end portion, an upper end fixedly mounted on the upper end of the metal tube up sleeve 13 at the center, and connected to one of the transducer detection joint a, 15 of the insulator 11 in the open hole, the vessel solution through the apertures 14 and the holes 15 into the metal tube as the capacitor dielectric, 12 is a converter output lead line holes, the second output line connected to the input of the instrument.

Claims (4)

  1. 1.一种电容式连续检测液位仪,含有电容一频率或电压转换器和电容式探头,本实用新型的特征是:电容式探头由一根在一段管壁上带有孔,端头装有绝缘子的金属管作边极,以安装在金属管中轴线处的金属丝作中心极构成。 1. A capacitive level gauge continuous detector, comprising a capacitor or a frequency voltage converter and the capacitive probe, the present invention is characterized in practically: a capacitive probe having a hole in a wall section, end loading there insulator side electrode as a metal pipe, as the wire to be mounted at the center axis of the metal tube electrode configuration.
  2. 2.根据权利要求1所述的液位仪,其特征是:金属丝一端固定在绝缘子上,另一端固定在金属管上部的密封绝缘涨套中,并通过引线与转换器检测接头A连接,金属管带孔段插入容器中固定在容器壁上,金属管上端部与转换器的检测接头B连接。 The level gauge according to claim 1, characterized in that: a wire having one end fixed to the insulator, and the other end fixed to an upper portion of the sealing jacket of insulating metal tube up and connected to the transducer by wire detection joint A, perforated metal tube inserted into the container section is fixed to the container wall B is detected the joint, the upper end portion of the metal tube is connected to the converter.
  3. 3.根据权利要求1或2所述的液位仪,其特征是:露于容器外部的金属管管壁上装有散热片,端部通过连接件与转换器的防护罩连接固紧。 The level gauge of claim 1 or claim 2, wherein: the metal exposed to the exterior of the container finned pipe wall, the end portions connected by a fastening member connected to the converter enclosure.
  4. 4.根据权利要求1所述的液位仪,其特征是:转换器的输出端接二次仪表输入端。 Level gauge according to claim 1, characterized in that: the input terminal of the second instrument output end of the converter.
CN 97203196 1997-04-14 1997-04-14 Capacity continuous detection level meter CN2293804Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97203196 CN2293804Y (en) 1997-04-14 1997-04-14 Capacity continuous detection level meter

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Application Number Priority Date Filing Date Title
CN 97203196 CN2293804Y (en) 1997-04-14 1997-04-14 Capacity continuous detection level meter

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CN2293804Y true CN2293804Y (en) 1998-10-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102243092A (en) * 2011-05-05 2011-11-16 安徽润佳电缆集团股份有限公司 Tool for detecting stream parameters
CN102802526A (en) * 2009-06-23 2012-11-28 观察医学有限责任公司 Urine Measuring Device
CN105136243A (en) * 2015-05-08 2015-12-09 上海天行控制科技有限公司 Great-capacitance capacitive liquid level sensor suitable for dynamic environment
CN105157788A (en) * 2015-05-07 2015-12-16 四川科强电子技术有限责任公司 High-speed high-pressure liquidometer for detecting oil spillage of fluid pressure type CNG gas filling substation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102802526A (en) * 2009-06-23 2012-11-28 观察医学有限责任公司 Urine Measuring Device
CN102802526B (en) * 2009-06-23 2015-10-07 观察医学有限责任公司 Urine measuring device
CN102243092A (en) * 2011-05-05 2011-11-16 安徽润佳电缆集团股份有限公司 Tool for detecting stream parameters
CN105157788A (en) * 2015-05-07 2015-12-16 四川科强电子技术有限责任公司 High-speed high-pressure liquidometer for detecting oil spillage of fluid pressure type CNG gas filling substation
CN105136243A (en) * 2015-05-08 2015-12-09 上海天行控制科技有限公司 Great-capacitance capacitive liquid level sensor suitable for dynamic environment
CN105136243B (en) * 2015-05-08 2018-08-24 上海天行控制科技有限公司 For dynamic environments large capacitance of the capacitive level sensor

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