KR20120034839A - Method and apparatus for gauging of tank level - Google Patents

Method and apparatus for gauging of tank level Download PDF

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KR20120034839A
KR20120034839A KR1020100096158A KR20100096158A KR20120034839A KR 20120034839 A KR20120034839 A KR 20120034839A KR 1020100096158 A KR1020100096158 A KR 1020100096158A KR 20100096158 A KR20100096158 A KR 20100096158A KR 20120034839 A KR20120034839 A KR 20120034839A
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South Korea
Prior art keywords
inner pipe
pipe
outer pipe
tank
storage tank
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KR1020100096158A
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Korean (ko)
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KR101202924B1 (en
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방극모
배종훈
윤성상
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다임폴라특장주식회사
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    • 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
    • G01F23/26—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • 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
    • G01F23/04—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 dip members, e.g. dip-sticks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
    • B60K2015/03217—Fuel level sensors

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE: A measuring device for a residual quantity inside a storage tank and a measuring method are provided to fix a measuring device without changing a shape of a tank because the lower part of the outer pipe is supported in the bottom surface by a bracket and the upper part of the outer pipe is fixed to the top of the tank. CONSTITUTION: A measuring device(10) for a residual quantity inside a storage tank comprises an outer pipe(20), an inner pipe(30), a lower insulating member(70), an upper insulating member(60), and a detecting unit. The outer pipe is vertically arranged inside of the storage tank so that the top of the outer pipe is fixed to the top of the tank by a flange(40). The inner pipe is inserted into inside of the outer pipe and supported to be insulated with respect to the outer pipe. The lower insulating member is inserted into between the lower parts of the outer and inner pipes, thereby insulating the outer and inner pipes each other. The upper insulating member is supported by the flange and inserted into between the upper parts of the outer and inner pipes, thereby insulating the outer and inner pipes each other. The detecting unit is connected to the upper part of the inner pipe, thereby detecting a change of an electrostatic capacity.

Description

저장탱크의 잔량 측정장치 및 방법{Method and apparatus for gauging of Tank Level}Apparatus and method for measuring remaining amount of storage tank {Method and apparatus for gauging of Tank Level}

본 발명은 저장탱크의 잔량 측정장치 및 방법에 관한 것으로서, 더욱 상세하게는 측정물의 잔량에 따라 변화하는 정전용량을 측정하는 원리를 이용하여 탱크내의 잔량을 측정하는 측정장치 및 방법에 관한 것이다.The present invention relates to an apparatus and a method for measuring a residual amount of a storage tank, and more particularly, to a measuring apparatus and a method for measuring a residual amount in a tank by using a principle of measuring capacitance varying with a residual amount of a measurement object.

일반적으로 액화석유가스(LPG)용 저장탱크, 차량에 고정된 탱크 등은 내부의 용량을 확인하기 위한 측정수단을 필요로 한다. In general, a storage tank for LPG, a tank fixed to a vehicle, and the like require a measuring means for checking an internal capacity.

이러한 측정수단으로는 슬립 튜브게이지 방식과 로타리 레벨게이지 방식이 대표적으로 이용되고 있다. As the measuring means, slip tube gauge and rotary level gauge methods are typically used.

슬립 튜브게이지 방식은 저장탱크의 제작후 상부에서 삽입해 넣은 슬립튜브게이지를 뽑아 올려 저장물이 튜브에 묻어있는 위치를 보고 잔량을 측정하는 방식으로서, 현재 액화석유가스(LPG)용 저장탱크 또는 차량에 고정된 탱크에 적용되어 저장탱크 내부의 용량을 측정하는 게이지이다. Slip tube gauge method is to pull up the slip tube gauge inserted from the upper part after the storage tank is manufactured and to measure the remaining amount by looking at the position where the deposit is buried in the tube.It is currently a storage tank for LPG. It is a gauge that measures the capacity inside the storage tank that is applied to the tank fixed in the tank.

한편 로타리 레벨게이지 방식은 저장탱크 내부에 삽입된 관을 회전시켜 탱크 밖으로 가스와 액이 분출되어 나오는 교차점을 찾아 내부 용량을 측정하는 게이지이다.On the other hand, the rotary level gauge is a gauge that measures the internal capacity by rotating the pipe inserted into the storage tank to find the intersection point of the gas and liquid ejected out of the tank.

이러한 슬립 튜브게이지 방식은 저장탱크의 측정물이 외부로 노출되므로 액체 또는 가스의 유출이 발생하게 되어 가연성 가스측정에 부적합한 문제를 갖고 있었다. The slip tube gauge method is exposed to the outside of the measurement tank of the storage tank, the liquid or gas outflow occurs, which was inadequate for flammable gas measurement.

한편, 레벨측정으로 정전용량 레벨게이지가 개발되어 있는데, 이는 두 개의 독립적인 도체가 있을 경우 두 도체 사이에 형성되는 정전용량 값은 두 도체의 떨어져 있는 간격 그리고 유전율에 따라 결정된다. 따라서 자유공간(도체 면적 및 간격)의 유전율 상태에서 유전체의 비유전율이 측정대상물에 잠긴 정도에 따라 정전용량이 선형적으로 비례하게 되고, 이를 수위로 환산하여 전류로 표시 한다.On the other hand, capacitance level gauges have been developed by level measurement. In the case of two independent conductors, the capacitance value formed between the two conductors is determined by the distance between the two conductors and the dielectric constant. Therefore, in the state of permittivity of free space (conductor area and spacing), the capacitance is linearly proportional to the degree to which the dielectric constant of the dielectric is immersed in the measurement object.

그러나 차량에 장착되는 LPG 이동식 탱크는 제품 특성상 탱크를 제작후 열처리 과정을 거치고, 열처리(4~5백도씨로 소둔처리) 이후 탱크 표면에 직접적인 용접을 할 수 없기 때문에 전기저항이나 전선 피복물이 들어갈 수 없는 실정이다.However, LPG mobile tanks mounted on vehicles are subject to heat treatment after the tank is manufactured due to the characteristics of the product, and cannot be directly welded to the surface of the tank after heat treatment (annealing at 4 ~ 500 ° C). There is no situation.

대한민국 특허공개 2010-0047225호에는 정전용량식 레벨 센서를 하부벽이 구비된 액체 탱크 내부에 장착하는 방법으로, 상기 센서는 받침부 및 상기 받침부에서 연장되는 강성지지대에 의해 지지되는 적어도 하나의 정전용량식 부재를 포함하고 있는 측정부를 구비하며, 상기 받침부는 리테이너를 통해 상기 탱크의 하부벽에 견고하게 고정되어 있고, 이에 따라 상기 강성지지대는 상기 받침대에 대해 일정한 각도를 이룸으로써 상기 센서의 측정부 길이는 상기 받침대가 위치하고 있는 상기 탱크의 일 부분의 높이보다 큰, 방법이 개시되어 있다. Korean Patent Publication No. 2010-0047225 discloses a method for mounting a capacitive level sensor inside a liquid tank having a lower wall, wherein the sensor is supported by at least one electrostatic support supported by a support portion and a rigid support extending from the support portion. And a measuring part including a capacitive member, wherein the supporting part is firmly fixed to the lower wall of the tank through a retainer, so that the rigid support is at an angle with respect to the pedestal so that the measuring part of the sensor A method is disclosed in which the length is greater than the height of the portion of the tank in which the pedestal is located.

그러나 종래의 정전용량 레벨게이지는 설치를 위하여 받침부 및 강성지지대를 형성하여야 하는 등 탱크 제작과정에 레벨게이지를 함께 설치해야 하는 구조를 갖고 있어 열처리 과정을 거치는 탱크에는 부적합 하게 되고, 특히 제작완료된 기존탱크에 정전용량 게이지를 부착하는데 어려움이 있고, 교체과정에 작업성이 떨어지는 문제를 갖고 있었다.However, the conventional capacitance level gauge has a structure that must be installed together with the level gauge in the tank manufacturing process, such as forming the supporting portion and the rigid support for installation, making it unsuitable for tanks undergoing heat treatment, in particular, the existing It was difficult to attach the capacitive gauge to the tank, and the workability was inferior in the replacement process.

본 발명의 목적은 저장탱크의 형상을 변화시키지 않고 정전용량 게이지의 설치가 가능하며, 나아가 설치작업을 손쉽게 이룰 수 있도록 하여 작업성을 향상시킬 수 있는 저장탱크의 잔량 측정장치 및 방법을 제공함에 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and method for measuring the remaining amount of a storage tank, which can be installed in a capacitance gauge without changing the shape of the storage tank, and further improve the workability by making the installation easier. .

이러한 본 발명의 목적은 저장탱크의 내부에 수직방향으로 배치되어 상단은 플랜지에 의해 탱크상면에 고정되고, 하단은 브라켓에 의해 탱크 내측 바닥에 지지되는 도전성을 갖는 외측파이프와; 외측파이프의 내부로 삽입되며 외측파이프에 대해 절연가능하게 지지되며, 길이방향으로 측정물이 외측파이프와 내측파이프 사이의 공간으로 유입되도록 하는 복수의 연통공이 형성되어 있는 도전성을 갖는 내측파이프와; 외측파이프와 내측파이프의 하단 사이에 삽입되어 외측파이프와 내측파이프를 상호 절연함과 동시에 내측에 상기 내측파이프와 연통되는 중공부가 형성되고, 중공부에는 탱크내부와 연통되어 탱크내의 측정물이 유입될 수 있는 유입공이 형성되는 하부절연부재와; 상기 플랜지에 의해 지지되며 외측파이프와 내측파이프의 상단 사이에 삽입되어 외측파이프와 내측파이프를 상호 절연하는 상부절연부재와; 내측파이프의 상단에 연결되어 내측파이프에서의 정전용량 변화를 감지하는 감지수단;으로 이루어진 저장탱크의 잔량 측정장치에 의해 달성될 수 있다. An object of the present invention is disposed in the vertical direction in the interior of the storage tank and the upper end is fixed to the tank upper surface by a flange, the lower end having a conductive outer pipe supported by the inner bottom of the tank by the bracket; An inner pipe having a conductivity inserted into the outer pipe and being insulated from the outer pipe, the inner pipe having a plurality of communication holes formed in the longitudinal direction to allow a workpiece to flow into the space between the outer pipe and the inner pipe; It is inserted between the lower end of the outer pipe and the inner pipe to insulate the outer pipe and the inner pipe to each other and at the same time a hollow portion is formed in communication with the inner pipe, the hollow portion is in communication with the inside of the tank to be introduced into the measuring object in the tank A lower insulating member having an inlet hole formed therein; An upper insulating member supported by the flange and inserted between an upper end of the outer pipe and the inner pipe to insulate the outer pipe and the inner pipe from each other; It can be achieved by the remaining amount measuring device of the storage tank consisting of; sensing means connected to the upper end of the inner pipe for detecting a change in capacitance in the inner pipe.

상기 감지수단은 상부절연부재의 내측에 고정되어 내측파이프에 전기적으로 연결되는 센서패드와, 센서패드에 접속되어 변화되는 정전용량을 외부로 전달하는 케이블로 구성된다.The sensing means includes a sensor pad fixed to the inside of the upper insulating member and electrically connected to the inner pipe, and a cable connected to the sensor pad to transfer the changed capacitance to the outside.

상기 외측파이프의 상부 인접부에는 적어도 2개의 개방공이 형성된다.At least two open holes are formed in the upper adjacent portion of the outer pipe.

한편 본 발명에 따른 방법은, 저장탱크의 내부에서 적어도 하단부는 저장탱크의 바닥에 지지되고 상부는 저장탱크의 상부에 지지되도록 배치되는 것으로, 상호 소정의 간격을 갖도록 끼워지는 외측파이프와 내측파이프를 설치하고, 이들 외측파이프와 내측파이프를 상호 절연상태로 유지함과 동시에 내측파이프내부 및 내측파이프와 외측파이프 사이로 저장탱크내의 측정물을 유도하여 내측파이프에서 발생하는 정전용량의 변화를 측정한다.On the other hand, in the method according to the present invention, at least the lower end of the storage tank is supported to the bottom of the storage tank and the top is disposed so as to be supported on the upper portion of the storage tank, the outer pipe and the inner pipe which is fitted to have a predetermined distance from each other. While the outer pipe and the inner pipe are kept insulated from each other, a measurement object in the storage tank is guided between the inner pipe and the inner pipe and the outer pipe to measure the change in capacitance generated in the inner pipe.

이러한 본 발명은 외측파이프의 하단은 브라켓에 의해 탱크 저면에 지지되고, 상단은 플랜지에 의해 탱크 상부에 고정되도록 하여 탱크의 형상을 변화시키지 않고 측정장치의 고정이 가능한 것은 물론 위와 같이 고정된 외측파이프 내부로 내측파이프를 삽입하는 것에 의해 전체적인 조립이 완료되므로 작업성을 개선할 수 있는 효과를 갖는 것이다.In the present invention, the lower end of the outer pipe is supported on the bottom of the tank by a bracket, and the upper end is fixed to the upper tank by the flange so that the measuring device can be fixed without changing the shape of the tank, as well as the fixed outer pipe as described above. Since the overall assembly is completed by inserting the inner pipe into the interior, the workability is improved.

도 1은 본 발명에 따른 저장탱크의 정전용량 측정장치의 구성을 보인 단면도
도 2는 본 발명에 따른 저장탱크의 정전용량 측정장치의 상부절연부의 구성을 보인 부분확대도
도 3은 본 발명에 따른 저장탱크의 정전용량 측정장치의 하부절연부의 구성을 보인 부분확대도1 is a cross-sectional view showing the configuration of a capacitance measuring device of a storage tank according to the present invention
Figure 2 is a partially enlarged view showing the configuration of the upper insulation of the capacitance measuring device of the storage tank according to the present invention
Figure 3 is a partially enlarged view showing the configuration of the lower insulating portion of the capacitance measuring device of the storage tank according to the present invention

이하에서는 본 발명에 따른 바람직한 실시예를 첨부한 도면을 참고하여 구체적으로 살펴보면 다음과 같다. Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

도 1에는 본 발명에 따른 저장탱크의 잔량 측정장치의 구성이 도시되어 있다. 도 2에 및 도 3에는 각각 상부 및 하부의 구조를 확대하여 도시하고 있다. 이에 따르면 본 발명은 저장탱크(10)의 내부에 하단이 탱크 저면에 지지되고 상단이 부는 탱크 상부에 지지되는 외측파이프(20)와 내측파이프(30)가 구비된다. 외측파이프(20)는 저장탱크(10) 내부에 수직방향으로 배치되어 상단은 플랜지(40)에 의해 탱크(10) 상면에 고정되고, 하단은 브라켓(50)에 의해 탱크(10) 내측 바닥에 지지된다.1 is a configuration of the remaining amount measuring device of the storage tank according to the present invention. 2 and 3 show enlarged structures of the upper and lower portions, respectively. Accordingly, the present invention is provided with an outer pipe 20 and an inner pipe 30 having a lower end supported on the bottom of the tank and an upper end supported on the tank upper part inside the storage tank 10. The outer pipe 20 is disposed in a vertical direction inside the storage tank 10 so that the upper end is fixed to the upper surface of the tank 10 by the flange 40, and the lower end is fixed to the inner bottom of the tank 10 by the bracket 50. Supported.

상기 내측파이프(30)는 외측파이프(20)의 내부로 동심을 갖도록 삽입되며 외측파이프(20)에 대해 절연가능하게 지지되며, 길이방향으로 측정물이 외측파이프(20)와 내측파이프(30) 사이의 공간으로 유입되도록 하는 복수의 연통공(32)이 형성되어 있다. 외측파이프(20)와 내측파이프(30)는 모두 도전성을 갖는다.The inner pipe 30 is inserted concentrically into the outer pipe 20 and is insulated from the outer pipe 20 so as to be insulated from the outer pipe 20, and the measured object in the longitudinal direction is the outer pipe 20 and the inner pipe 30. A plurality of communication holes 32 are formed to be introduced into the space between them. The outer pipe 20 and the inner pipe 30 are both conductive.

외측파이프(20)와 내측파이프(30)의 상단 및 하단사이에는 각각 상부절연부재(60) 및 하부절연부재(70)가 설치되어 외측파이프(20)와 내측파이프(30)를 상호 절연하게된다. An upper insulating member 60 and a lower insulating member 70 are installed between the upper and lower ends of the outer pipe 20 and the inner pipe 30 to insulate the outer pipe 20 and the inner pipe 30 from each other. .

하부절연부재(70)는 외측파이프(20)와 내측파이프(30)의 하단 사이에 삽입되어 이들을 상호 절연함과 동시에 내측에 상기 내측파이프(30)와 연통되는 중공부(72)가 형성되고, 중공부(72)에는 탱크(10)내부와 연통되어 탱크(10)내의 측정물이 중공부(72)로 유입될 수 있는 유입공(74)이 형성되어 있다.The lower insulating member 70 is inserted between the lower end of the outer pipe 20 and the inner pipe 30 to insulate each other and at the same time a hollow portion 72 is formed in communication with the inner pipe 30, The hollow portion 72 is formed with an inflow hole 74 which communicates with the inside of the tank 10 so that the measurement object in the tank 10 can flow into the hollow portion 72.

상부절연부재(60)는 상기 플랜지(40)에 의해 지지되며 외측파이프(20)와 내측파이프(30)의 상단 사이에 삽입되어 이들을 상호 절연한다.The upper insulating member 60 is supported by the flange 40 and inserted between the outer pipe 20 and the upper end of the inner pipe 30 to insulate them from each other.

내측파이프(30)의 상단에는 내측파이프(30)에서의 정전용량 변화를 감지하는 감지수단이 연결된다. 감지수단은 상부절연부재(60)의 내측에 고정되어 내측파이프(30)에 전기적으로 연결되는 센서패드(80)와, 센서패드(80)에 접속되어 변화되는 정전용량을 외부로 전달하는 케이블(82)로 구성된다.Sensing means for detecting a change in capacitance in the inner pipe 30 is connected to the upper end of the inner pipe 30. The sensing means is fixed to the inside of the upper insulating member 60, the sensor pad 80 is electrically connected to the inner pipe 30, and the cable connected to the sensor pad 80 to transfer the changed capacitance to the outside ( 82).

상기 외측파이프(20)의 상부 인접부에는 적어도 2개의 개방공(22)이 형성되어 외측파이프(20)와 내측파이프(30)사이로 유입되는 측정물의 수준이 상승할 때 상부의 공기를 탱크내부로 배출하여 공기압축에 따른 저항을 주지않게 된다. At least two open holes 22 are formed in the upper adjacent portion of the outer pipe 20 so that the upper air flows into the tank when the level of the workpiece flowing between the outer pipe 20 and the inner pipe 30 rises. It does not give resistance to air compression.

이러한 구성을 갖는 본 발명은 측정물이 유입공(74)을 통해 하부절연부재(70)의 중공부(72)로 유입되고, 내측파이프(30)내로 차오르다가 연통공(32)을 통해 외측파이프(20)측으로 유입된다. 따라서 상호 절연상태의 외측파이프(20)와 내측파이프(30)에는 측정물을 매개로 전류가 흐르게되고, 이 전류량은 측정물이 차오름에 따라 변화하게 되며, 그에 다라 정전용량이 변화하게된다. 따라서 이러한 변화는 센서패드(80)에 연결된 케이블(82)을 통해 외부로 전달되어 측정물의 량을 판단하게 된다. In the present invention having such a configuration, the measurement object flows into the hollow portion 72 of the lower insulating member 70 through the inflow hole 74, and is filled into the inner pipe 30, and then through the communication hole 32. It flows into the pipe 20 side. Therefore, a current flows through the outer pipe 20 and the inner pipe 30 in a mutually insulated state through a measurement object, and the amount of current changes as the measurement object rises, thereby changing the capacitance. Therefore, the change is transmitted to the outside through the cable 82 connected to the sensor pad 80 to determine the amount of the measurement object.

이러한 본 발명은 외측파이프(20)가 브라켓(50) 및 플랜지(40)에 의해 탱크내부에 고정된 상태에서, 내측파이프(30)를 하부절연부재(70)를 개재하여 외측파이프(20)내로 삽입함과 동시에 센서패드(80)를 장착하고 상부절연부재(60)를 조립하는 것에 의해 장치의 조립이 가능하게 되므로 탱크형상의 변화없이 측정장치의 설치가 가능하고, 작업성을 향상시킬 수 있다.
In the present invention, the outer pipe 20 is fixed to the inside of the tank by the bracket 50 and the flange 40, the inner pipe 30 into the outer pipe 20 through the lower insulating member 70. By inserting the sensor pad 80 and assembling the upper insulating member 60 at the same time, the device can be assembled, so that the measuring device can be installed without changing the shape of the tank and workability can be improved. .

10: 저장탱크 20: 외측파이프
22: 개방공 30: 내측파이프
32: 연통공 40: 플랜지
50: 브라켓 60: 상부절연부재
70: 하부절연부재 72: 중공부
74: 유입공 80: 센서패드
82: 케이블10: storage tank 20: outer pipe
22: open hole 30: inner pipe
32: communication hole 40: flange
50: bracket 60: upper insulating member
70: lower insulating member 72: hollow part
74: inlet hole 80: sensor pad
82: cable

Claims (4)

저장탱크의 내부에 수직방향으로 배치되어 상단은 플랜지에 의해 탱크상면에 고정되고, 하단은 브라켓에 의해 탱크 내측 바닥에 지지되는 도전성을 갖는 외측파이프와;
외측파이프의 내부로 삽입되며 외측파이프에 대해 절연가능하게 지지되며, 길이방향으로 측정물이 외측파이프와 내측파이프 사이의 공간으로 유입되도록 하는 복수의 연통공이 형성되어 있는 도전성을 갖는 내측파이프와;
외측파이프와 내측파이프의 하단 사이에 삽입되어 외측파이프와 내측파이프를 상호 절연함과 동시에 내측에 상기 내측파이프와 연통되는 중공부가 형성되고, 중공부에는 탱크내부와 연통되어 탱크내의 측정물이 유입될 수 있는 유입공이 형성되는 하부절연부재와;
상기 플랜지에 의해 지지되며 외측파이프와 내측파이프의 상단 사이에 삽입되어 외측파이프와 내측파이프를 상호 절연하는 상부절연부재와;
내측파이프의 상단에 연결되어 내측파이프에서의 정전용량 변화를 감지하는 감지수단;으로 이루어진 것을 특징으로 하는 저장탱크의 정전용량 측정장치.
An outer pipe having a conductivity disposed in the storage tank in a vertical direction, the upper end of which is fixed to the tank upper surface by a flange, and the lower end of which is supported on the inner bottom of the tank by a bracket;
An inner pipe having a conductivity inserted into the outer pipe and being insulated from the outer pipe, the inner pipe having a plurality of communication holes formed in the longitudinal direction to allow a workpiece to flow into the space between the outer pipe and the inner pipe;
It is inserted between the lower end of the outer pipe and the inner pipe to insulate the outer pipe and the inner pipe to each other and at the same time a hollow portion is formed in communication with the inner pipe, the hollow portion is in communication with the inside of the tank to be introduced into the measuring object in the tank A lower insulating member having an inlet hole formed therein;
An upper insulating member supported by the flange and inserted between an upper end of the outer pipe and the inner pipe to insulate the outer pipe and the inner pipe from each other;
And a sensing means connected to an upper end of the inner pipe and configured to sense a change in capacitance in the inner pipe.
제 1항에 있어서, 상기 감지수단은 상부절연부재의 내측에 고정되어 내측파이프에 전기적으로 연결되는 센서패드와, 센서패드에 접속되어 변화되는 정전용량을 외부로 전달하는 케이블로 구성된 것을 특징으로 하는 저장탱크의 정전용량 측정장치.
The method of claim 1, wherein the sensing means is fixed to the inside of the upper insulating member, the sensor pad is electrically connected to the inner pipe, and connected to the sensor pad, characterized in that the cable for transmitting the changed capacitance to the outside, characterized in that Capacitance measuring device for storage tanks.
제 2항에 있어서, 상기 외측파이프의 상부 인접부에는 적어도 2개의 개방공이 형성된 것을 특징으로 하는 저장탱크의 정전용량 측정장치.
3. The apparatus of claim 2, wherein at least two openings are formed in an upper portion of the outer pipe.
저장탱크의 내부에서 적어도 하단부는 저장탱크의 바닥에 지지되고 상부는 저장탱크의 상부에 지지되도록 배치되는 것으로, 상호 소정의 간격을 갖도록 끼워지는 외측파이프와 내측파이프를 설치하고, 이들 외측파이프와 내측파이프를 상호 절연상태로 유지함과 동시에 내측파이프내부 및 내측파이프와 외측파이프 사이로 저장탱크내의 측정물을 유도하여 내측파이프에서 발생하는 정전용량의 변화를 측정하여 저장탱크 내부의 측정물의 잔량을 측정하는 저장탱크의 정전용량 측정방법.At least a lower end of the storage tank is supported by the bottom of the storage tank and the upper part is disposed to be supported by the upper part of the storage tank. The outer pipe and the inner pipe fitted to have a predetermined interval therebetween are installed. Storage to measure the residual amount of the measurement inside the storage tank by measuring the change of capacitance generated in the inner pipe by inducing the measured object in the storage tank between the inner pipe and the inner pipe and the outer pipe while maintaining the pipes insulated from each other. How to measure the capacitance of a tank.
KR1020100096158A 2010-10-02 2010-10-02 Method and apparatus for gauging of Tank Level KR101202924B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102301284B1 (en) * 2021-08-09 2021-09-13 주식회사 오디텍 Level gauge sensor structure of fuel storage device
KR102357025B1 (en) * 2021-08-09 2022-02-08 주식회사 오디텍 Level gauge sensor structure of fuel storage device

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* Cited by examiner, † Cited by third party
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JPS55132915A (en) 1979-04-04 1980-10-16 Toshiyuki Chichii Fuel gauge
JPS5664619A (en) 1979-10-31 1981-06-01 Toshiyuki Chichii Fuel guage
JP2008209217A (en) 2007-02-26 2008-09-11 Tokiko Techno Kk Electrostatic capacitance type liquid level gauge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102301284B1 (en) * 2021-08-09 2021-09-13 주식회사 오디텍 Level gauge sensor structure of fuel storage device
KR102357025B1 (en) * 2021-08-09 2022-02-08 주식회사 오디텍 Level gauge sensor structure of fuel storage device

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