KR20020080564A - Level control device of humidity chamber reservoir which controls humidity for satellite subsystem test - Google Patents

Level control device of humidity chamber reservoir which controls humidity for satellite subsystem test Download PDF

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KR20020080564A
KR20020080564A KR1020010020194A KR20010020194A KR20020080564A KR 20020080564 A KR20020080564 A KR 20020080564A KR 1020010020194 A KR1020010020194 A KR 1020010020194A KR 20010020194 A KR20010020194 A KR 20010020194A KR 20020080564 A KR20020080564 A KR 20020080564A
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South Korea
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water level
water
humidity
resistance
control device
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KR1020010020194A
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Korean (ko)
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서희준
최석원
조주형
이주진
김진철
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한국항공우주연구원
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Publication of KR20020080564A publication Critical patent/KR20020080564A/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
    • 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
    • G01F23/30—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 floats
    • G01F23/56—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 floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
    • G01F23/60—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 floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE: A water level control apparatus is provided to prevent contamination by using a pure water in humidity control, while achieving improved accuracy for water level control. CONSTITUTION: A water level control apparatus for controlling water level through a relay(2) and a driving unit(3), comprises a pump(6) connected to an electronic valve(7) and a water reservoir(5); an electrode rod(4) having a resistance value; and a float(9) connected to the electrode rod, and which moves in accordance with the water level. The water level is measured by the resistance value obtained from the resistance sensed by sensors arranged at a low water level(11), an intermediate water level(12) and a high water level(13), and measured by a multi-meter(1). The electrode rod is made of a conductive material including nichrome and tungsten.

Description

위성체 부품 시험용 습기 챔버 습도조절용 수조의 수위조절장치{Level control device of humidity chamber reservoir which controls humidity for satellite subsystem test}Level control device of humidity chamber reservoir which controls humidity for satellite subsystem test}

본 발명은 수조의 온도 및 습도를 조절하여 열환경을 모사하는 것으로 시험대상물에게 온도와 습도에 대한 극한환경을 만들어주는 위성체 부품 시험용 습기 챔버 습도조절용 수조의 수위조절장치에 관한 것이다.The present invention relates to a water level control device for a humidity chamber for controlling humidity of a satellite component for controlling a temperature and humidity of a water bath to create an extreme environment for temperature and humidity to a test object.

종래 습기(Humidity)챔버는 온도 및 습도를 조절하여 열환경을 모사하는 방식은 챔버내 수조의 물을 가열하여 수증기의 양을 히터, 냉동기의 조절을 통해 챔버내부 습도를 조절한다.Conventional humidity (humidity) chamber is a method of simulating the thermal environment by adjusting the temperature and humidity to heat the water of the tank in the chamber to control the humidity in the chamber through the control of the amount of water vapor, heater, freezer.

위성체에 관련된 부품들은 오염물질에 의해 치명적인 영향을 받게 되어 성능의 저하를 받을 수 있으므로 그 취급을 할 때는 많은 주의가 필요하게 되며(청정도 10,000 class 이하의 청정환경에서 동작시켜야 되는 등의 작동조건이 있음) 위성체 부품을 시험하는 챔버의 경우 챔버 내부는 항상 청결한 상태를 유지해야 함은 물론이고, 불순물이 섞여있는 물을 사용하여 습도를 조절할 경우 이러한 물에 섞여있던 오염물질이 분출되어 위성체부품을 오염시킬 수 있기 때문에 반드시 순수한 물{증류수나 DI 워터(Deionize water)}을 사용하여 습도조절을 하여야 한다.Components related to satellites are severely affected by pollutants and may degrade performance. Therefore, great care must be taken when handling them (operating conditions such as operating in a clean environment of less than 10,000 classes of cleanliness) In the case of testing satellite components, the inside of the chamber must be kept clean at all times, and when the humidity is controlled using water containing impurities, contaminants mixed with such water are ejected to contaminate the satellite components. Humidity must be controlled using pure water (distilled or DI water).

그런데 통상 습기 챔버에서 사용하는 수위 조절방식은 전기적인 방법으로 도 2 에 도시된 바와 같이 수조(5)의 내부에 저수위(11)와 중수위(12) 및 고수위(13)를 각각 감지하는 전극봉(30)을 레벨스위치(31)에 연결시키고 수조(5)의 일측으로 급수용 전자밸브(7)와 펌프(6)를 설치하며, 레벨스위치(31)를 릴레이(32)와 구동장치(33)로 연결되는 구성을 갖는다.By the way, the water level control method used in the normal moisture chamber is an electrode that senses the low water level 11, the medium water level 12 and the high water level 13 in the interior of the water tank 5, as shown in FIG. 30 is connected to the level switch 31, and the solenoid valve 7 and the pump 6 for water supply are installed on one side of the water tank 5, and the level switch 31 is connected to the relay 32 and the drive device 33. It has a configuration that is connected to.

이러한 챔버 내부에 부착된 수조(5)에 수돗물을 채워 물의 전도도를 측정하여 수위를 조절하는 전기적인 방법을 사용하고 있다.Filling tap water in the water tank (5) attached to the inside of the chamber is used to measure the conductivity of the water by using an electrical method of adjusting the water level.

수위조절장치의 동작은 전극봉이 수위에 따라 각각 다른 신호를 보내는데 이신호에 따라 구동장치와 연결되어 있는 릴레이가 동작하여, 각 수위에 따라 히터, 급수용 전자밸브 등을 조절하여 수조의 수위를 조절한다.The operation of the water level control device sends different signals according to the water level, and the relay connected to the driving device operates according to this signal, and the water level of the water tank is adjusted by adjusting the heater and the water supply solenoid valve according to each water level. .

그러나 전기를 이용한 수위조절장치는 물의 전기에 대한 전도성을 이용하여 수위를 측정하기 때문에 수돗물 등의 일반적인 물에서는 작동이 잘되지만, 순수한물에서는 동작하지 않는 문제를 갖고 있다.However, the water level control device using electricity has a problem that it works well in general water such as tap water because it measures the water level using the conductivity of water electricity, but does not work in pure water.

위성체 부품등을 시험하는 위성체 부품 시험용 습기 챔버에서는 오염의 우려성을 없애기 위하여 반드시 순수한 물로 습도조절을 하여야 하기 때문에 수위조절장치를 사용할 수 없게 된다.In the humidity chamber for testing satellite parts, the water level control device cannot be used because the humidity control must be performed with pure water to eliminate the risk of contamination.

또한 기계적인 방식만을 이용한 수위조절장치는 순수한 물 또는 수돗물등 모든 유체에 적용이 가능하지만 가장 큰 문제점은 수조의 고, 저 수위만을 측정하기 때문에 습기 챔버처럼 3개이상의 습도조절용 수위정보가 필요한 저수조에는 적용되기가 힘들게 된다.In addition, the water level control device using the mechanical method can be applied to all fluids such as pure water or tap water, but the biggest problem is that only the high and low water level of the water tank is measured. It is difficult to apply.

여러 수위를 측정하기 위해서는 수위조절장치의 길이가 길어져 수조의 크기가 작은 경우에는 사용이 불가능한 문제점을 갖고 있다.In order to measure several water levels, the length of the water level control device is long, and when the size of the water tank is small, there is a problem that cannot be used.

상기 전기 및 기계적인 수위조절장치는 챔버내부 벽면에 오염물질의 흡착으로 청결을 유지하기 어려운 것이다.The electrical and mechanical water level control device is difficult to maintain cleanliness by adsorption of contaminants on the inner wall of the chamber.

본 발명은 위성체 부품의 습도시험시, 위성체 부품을 오염 시키지 않도록 순수한 물(증류수 및 DI water)을 사용하여 습도조절을 할 수 있도록 하는 수위조절장치를 제공하는 것이다.The present invention is to provide a water level control device that can control the humidity using pure water (distilled water and DI water) so as not to contaminate the satellite components during the humidity test of the satellite components.

본 발명은 중류수등 전기전도성이 없는 액체에서도 수조의 수위상태를 조절할 수 있도록 하는 것이다.The present invention is to be able to control the water level of the tank even in a liquid without electrical conductivity, such as midstream water.

본 발명은 저항값을 갖는 도체물질인 전극봉을 설치하고, 상기 전극봉에 물의 수위를 나타내는 플루우트가 연결되어 수위에 따라 이동되며 저수위와 중수위 및 고수위에 설치된 센서를 통하여 감지된 후 멀티미터을 통해 측정된 저항은 저항값에 따른 신호에 의해 수위를 측정할 수 있도록 함을 특징으로 한다.The present invention installs an electrode rod, which is a conductive material having a resistance value, is connected to the flute indicating the water level to the electrode is moved according to the water level and is measured through a sensor installed in the low and medium water level and high water level and then measured through a multimeter The resistance is characterized in that the level can be measured by the signal according to the resistance value.

도 1 은 본 발명의 설치상태도1 is an installation state diagram of the present invention

도 2 는 종래 수위조절장치의 설치상태도2 is a state diagram of the conventional water level control device

[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]

1 : 멀티미터2 : 릴레이1: multimeter 2: relay

3 : 구동장치4 : 전극봉3: driving device 4: electrode

5 : 수조6 : 펌프5: water tank 6: pump

7 : 급수용 전자밸브9 : 플루우트7: water supply solenoid valve 9: flute

11 : 저수위12 : 중수위11: low water level 12: medium water level

13 : 고수위21 : 전원부13: high water level 21: power supply

22 : 저항 측정부23 : 출력부22: resistance measurement unit 23: output unit

본 발명은 습기 챔버 내부에 설치된 수조(5)에 저항값을 갖는 도체물질인 니크롬 및 텅스텐 등의 재질을 갖는 하나의 전극봉(4)을 설치하고, 전극봉(4) 상단에서 전선으로 저항 측정부(22)와 연결한다.The present invention installs one electrode rod 4 made of a material such as nichrome and tungsten, which is a conductor material having a resistance value, in the water tank 5 installed inside the moisture chamber, and the resistance measurement unit (2) at the top of the electrode rod 4. 22).

전극봉(4)에 물의 수위를 나타낼 수 있는 플루우트(9)를 설치하고, 여기에 배선을 연결한다.A flute 9 capable of indicating the water level is provided in the electrode 4, and wiring is connected thereto.

전극봉(4)과 플루우트(9)가 연결되는 부분은 알루미늄, 구리 등의 전도성 재질을 사용한다.The electrode 4 and the flute 9 are connected to each other using a conductive material such as aluminum or copper.

전극봉(4)의 상단과 플루우트(9)의 전기가 통하는 부분에 센서를 설치하고 선을 연결하여 멀티미터(1)로 저항이 측정되도록 한다.The sensor is installed at the upper end of the electrode 4 and the electric part of the flute 9 and the wires are connected so that the resistance is measured by the multimeter 1.

센서의 설치개수는 다양하게 조절할 수 있으나 본 발명에서는 저수위(11)와 중수위(12) 및 고수위(13) 3곳에 센서를 설치하여 저항을 측정하도록 한다.The number of installation of the sensor can be adjusted in various ways, but in the present invention, the sensor is installed in three places of the low water level 11, the middle water level 12, and the high water level 13 to measure resistance.

멀티미터(1)에 연결된 센서를 통해 측정된 저항은 저항값에 따른 신호에 의해 수위를 측정할 수 있으며, 이러한 수위정보에 따라서 출력부(23)에서 릴레이(2)를 동작시켜 습도조절에 필요한 제어를 하게된다.The resistance measured by the sensor connected to the multimeter 1 can measure the water level by a signal according to the resistance value, and according to the water level information, the output unit 23 operates the relay 2 to control humidity. Control.

각 릴레이(2)들은 펌프(6)와 급수용 전자밸브(7) 및 히터(15) 등은 구동장치(3)와 연결되어 저수위(11)와 중수위(12) 및 고수위(13)에 설치된 센서를 통하여 3개점이상의 저항값에 따른 신호에 따라 개폐가 제어된다.Each relay 2 is connected to a pump 6, a solenoid valve 7 for water supply, a heater 15, and the like, which are installed at a low water level 11, a medium water level 12, and a high water level 13 by being connected to a driving device 3. Through the sensor, opening and closing is controlled according to the signal according to the resistance value of three or more points.

상기 수조(5)의 저면부에는 펌프(6)에 의하여 공급되는 물을 제어하는 급수용 전자밸브(7)가 연결되어 있으며, 전원부(21)의 전원을 통하여 작동되도록 하는 것이다.A water supply solenoid valve 7 for controlling the water supplied by the pump 6 is connected to the bottom portion of the water tank 5 so as to be operated through the power of the power supply unit 21.

수조(5)의 수위가 저수위(11)일 경우 플루우트(9)가 센서에 감지된 후 멀티미터(1)에 측정된 저항은 최대값을 나타내게 되는데, 최대값의 저항은 저항 측정부(22)에 감지된 후 출력부(23)를 통하여 릴레이(2)를 작동시키게 된다.When the water level of the water tank 5 is the low water level 11, the resistance measured by the multimeter 1 after the flute 9 is detected by the sensor indicates the maximum value, and the resistance of the maximum value is the resistance measuring unit 22. After being sensed), the relay 2 is operated through the output unit 23.

저항이 최대값에 대해서 작동하는 릴레이(2)가 동작하여 구동장치(3)를 구동시키면 급수용 전자밸브(7)가 개방되면서 펌프(6)를 통하여 수조(5)에 물을 공급하게 된다.When the relay 2, which operates at a maximum resistance, drives the driving device 3, the water supply solenoid valve 7 is opened to supply water to the water tank 5 through the pump 6.

수조(5)의 수위가 고수위(13)가 되면 센서에 감지된 후 멀티미터(1)를 통하여 저항 측정부(22)에 측정된 저항값은 최소값을 나타내고, 출력부(23)를 통하여 출력되는 신호에 작동되는 릴레이(2)에 의해 구동장치(3)가 급수용 전자밸브(7)를 닫아 물의 공급을 중지시킨다.When the water level of the water tank 5 reaches the high water level 13, the resistance value measured by the resistance measuring unit 22 through the multimeter 1 after being sensed by the sensor indicates a minimum value and is output through the output unit 23. The drive device 3 closes the water supply solenoid valve 7 by the relay 2 acting on the signal to stop the water supply.

챔버내에서 위성체 부품의 습도시험시 구동장치(3)에서 히터(15)에 전원을 공급하여 물을 데워 수증기를 증발시켜 습도를 조절하게 된다.During the humidity test of the satellite components in the chamber, the driving device 3 supplies power to the heater 15 to heat the water to evaporate the water vapor to control the humidity.

습도를 조절하는 과정에서 수증기의 증발에 의한 수위의 저하로 수위가 중수위(12)로 떨어지게 되면 중수위(12)에 위치한 센서에 감지된 후 멀티미터(1)를 통하여 저항 측정부(22)에서 감지되어 릴레이(2)와 구동장치(3)를 작동시켜 펌프(6)와 급수용 전자밸브(7)를 작동시켜 고수위(13)까지 물을 공급하게 된다.When the water level drops to the middle water level 12 due to a decrease in the water level due to the evaporation of water vapor in the process of controlling humidity, the resistance measuring unit 22 is detected by the multimeter 1 after being detected by a sensor located in the heavy water level 12. It is detected in the relay (2) and the driving device (3) to operate the pump 6 and the water supply solenoid valve (7) to supply water to the high water level (13).

본 발명의 챔버는 청정도 10,000class이하의 청정실에 설치되어 운영될 수 있으며, 습도는 20∼95%RH 조절이 가능하고, 온도는 냉동기를 이용한 모드에서는 100℃∼-80℃, LN2를 이용하여 -150℃까지 온도를 모사할 수 있는 챔버를 제공하는 것이다.Chamber of the present invention can be installed and operated in a clean room of less than 10,000 class cleanliness, humidity is 20 to 95% RH adjustable, the temperature is 100 ℃ ~ -80 ℃ in the mode using a freezer, using LN2 It is to provide a chamber that can simulate the temperature to -150 ℃.

본 발명은 순수한 물을 이용하여 습도를 조절하기 때문에 시험 대상체인 위성체 부품에 대해서 습도조절 따라 발생할 수 있는 오염을 방지할 수 있게된다.Since the present invention controls the humidity using pure water, it is possible to prevent contamination that may occur due to the humidity control of the satellite component as a test object.

본 발명은 순수한 물을 사용하기 때문에 챔버내부 벽면에 오염물질의 흡착을 방지하여 챔버를 청결한 상태에서 시험을 수행할 수 있게된다.Since the present invention uses pure water, it is possible to prevent the adsorption of contaminants on the inner wall of the chamber so that the test can be performed in a clean state of the chamber.

본 발명은 정의된 저항값에 따라 저항값은 감지하여 구동장치에서 수위에 따른 정확한 수위조절이 가능한 것이다.According to the present invention, the resistance value is sensed according to the defined resistance value, so that the precise level control according to the water level in the driving device is possible.

본 발명은 작은 공간에 설치된 소규모의 수조에 대해서도 많은 수의 포인트에 대해 수위조절이 가능해진다.According to the present invention, the water level can be adjusted for a large number of points even for a small tank installed in a small space.

본 발명은 순수한 물뿐만 아니라 일반적인 수돗물 등이 모든 유체에서 작동이 가능해진다.In the present invention, not only pure water but also general tap water can be operated in all fluids.

Claims (3)

수조(5)에 히터(15)와 급수용 전자밸브(7)에 연결된 펌프(6)가 연결되어 릴레이(2)와 구동장치(3)를 통하여 수위를 조절하는 수위조절장치에 있어서,In the water level adjusting device for controlling the water level through the relay (2) and the driving device (3) is connected to the water tank (5) connected to the heater (15) and the solenoid valve for water supply (7), 저항값을 갖는 도체물질인 전극봉(4)을 설치하고, 상기 전극봉(4)에 물의 수위를 나타내는 플루우트(9)가 연결되어 수위에 따라 이동되며 저수위(11)와 중수위(12) 및 고수위(13)에 설치된 센서를 통하여 감지된 후 멀티미터(1)를 통해 측정된 저항은 저항값에 따른 신호에 의해 수위를 측정할 수 있도록 함을 특징으로 하는 위성체 부품 시험용 습도 챔버 습도조절용 수조의 수위조절장치.An electrode rod 4, which is a conductor material having a resistance value, is installed, and a flute 9 representing a water level is connected to the electrode 4 and moved according to the water level, and the low water level 11, the medium water level 12, and the high water level are connected. The resistance measured by the multimeter (1) after being sensed by the sensor installed in (13) allows the water level to be measured by the signal according to the resistance value. Regulator. 제1항에 있어서, 전극봉(4)은 저항값을 갖는 도체물질인 니크롬 및 텅스텐으로 이루어진 것을 특징으로 하는 위성체 부품 시험용 습도 챔버 습도조절용 수조의 수위조절장치.The apparatus of claim 1, wherein the electrode (4) is made of nichrome and tungsten, which are conductor materials having resistance values. 제1항에 있어서, 수조(5)의 수위가 저수위일 경우 멀티미터(1)에 최대값의 저항을 나타내고, 수조(5)의 수위가 고수위일 경우 멀티미터(1)에 최소값의 저항을 나타냄을 특징으로 하는 위성체 부품 시험용 습도 챔버 습도조절용 수조의 수위조절장치.The multimeter (1) shows the maximum resistance when the water level of the water tank (5) is low, and shows the minimum resistance to the multimeter (1) when the water level of the water tank (5) is high. Humidity chamber for testing the satellite component parts, the water level control device of the humidity control tank.
KR1020010020194A 2001-04-16 2001-04-16 Level control device of humidity chamber reservoir which controls humidity for satellite subsystem test KR20020080564A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101219885B1 (en) * 2010-10-29 2013-01-08 김상범 Temperature sensor unit with water level sensing function
CN104597924A (en) * 2015-01-22 2015-05-06 河海大学 Adjustable fixed water level automatic control device
KR102416671B1 (en) * 2021-03-11 2022-07-06 주식회사 도우인시스 The potassium nitrate level detection sensing module in the strengthening furnace

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JPS6094819A (en) * 1983-10-28 1985-05-28 Mazda Motor Corp Fuel tank for automobile
JPS6395322A (en) * 1986-10-09 1988-04-26 Kurita Water Ind Ltd Liquid level meter
JP2000136956A (en) * 1998-10-30 2000-05-16 Nippon Seiki Co Ltd Liquid level-detecting apparatus and manufacture for conductor electrode used therein

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5711354B2 (en) * 1976-12-21 1982-03-03
JPS6094819A (en) * 1983-10-28 1985-05-28 Mazda Motor Corp Fuel tank for automobile
JPS6395322A (en) * 1986-10-09 1988-04-26 Kurita Water Ind Ltd Liquid level meter
JP2000136956A (en) * 1998-10-30 2000-05-16 Nippon Seiki Co Ltd Liquid level-detecting apparatus and manufacture for conductor electrode used therein

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101219885B1 (en) * 2010-10-29 2013-01-08 김상범 Temperature sensor unit with water level sensing function
CN104597924A (en) * 2015-01-22 2015-05-06 河海大学 Adjustable fixed water level automatic control device
CN104597924B (en) * 2015-01-22 2017-03-08 河海大学 Water level automatic control device can be set up
KR102416671B1 (en) * 2021-03-11 2022-07-06 주식회사 도우인시스 The potassium nitrate level detection sensing module in the strengthening furnace
WO2022191417A1 (en) * 2021-03-11 2022-09-15 주식회사 도우인시스 Sensing module for detecting level of potassium nitrate bath in tempering furnace

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