KR100952179B1 - Orp reference electrode for using oxidation reduction cod log relative error - Google Patents

Orp reference electrode for using oxidation reduction cod log relative error Download PDF

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KR100952179B1
KR100952179B1 KR1020090097143A KR20090097143A KR100952179B1 KR 100952179 B1 KR100952179 B1 KR 100952179B1 KR 1020090097143 A KR1020090097143 A KR 1020090097143A KR 20090097143 A KR20090097143 A KR 20090097143A KR 100952179 B1 KR100952179 B1 KR 100952179B1
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electrode
orp
cooling water
cooling tube
cooling
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박재철
정진용
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(주)극동티엠에스
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    • G—PHYSICS
    • G01—MEASURING; TESTING
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    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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    • G01N33/1806—Biological oxygen demand [BOD] or chemical oxygen demand [COD]
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    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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    • G01N27/28—Electrolytic cell components
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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    • G01N27/4166—Systems measuring a particular property of an electrolyte
    • G01N27/4168—Oxidation-reduction potential, e.g. for chlorination of water
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    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/49—Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species

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Abstract

PURPOSE: An ORP(Oxidation Reduction Potential) reference electrode with a cooling pipe using oxidation-reduction potential for a COD(Chemical Oxygen Demand) measuring device is provided to prevent boiling and bubbling by reducing heat due to the temperature rise of an electrode supplementary liquid in a ceramic part. CONSTITUTION: An ORP reference electrode(100) for a COD measuring device comprises a cooling pipe(110), an electrode(120), and a cooling water exchange pipe(130). The hollow electrode is installed in one side of the cooling pipe and receives a copper wire(20) connected to an electrode terminal(10). The cylindrical cooling water exchange pipe is provided on the other side of the cooling pipe. The electrode and the cooling water exchange pipe are received in the cooling pipe.

Description

ＣＯＤ 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ＯＲＰ 비교전극{ORP REFERENCE ELECTRODE FOR USING OXIDATION REDUCTION COD LOG RELATIVE ERROR}ORP comparison electrode with cooling tube using the redox potential difference of the COD detector {ORP REFERENCE ELECTRODE FOR USING OXIDATION REDUCTION COD LOG RELATIVE ERROR}

본 발명은 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극에 관한 것으로서, 더욱 상세하게는 화학적 용존산소량(COD: Chemical Oxygen Demand) 측정장비의 반응조내에 삽입되어 산화환원의 전위(ORP: Oxidation Reduction Potential) 지시전극과 함께 산화환원 전위차의 적정으로 COD의 농도를 측정하는 ORP 비교전극에 수도수 냉곽관을 설치하여 측정값의 오차율을 최소화하는 기술에 관한 것이다.The present invention relates to an ORP comparison electrode equipped with a cooling tube using a redox potential difference of a COD measuring instrument, and more particularly, to a redox potential (ORP: Oxidation Reduction Potential) The present invention relates to a technology for minimizing the error rate of measured values by installing a cold water pipe on an ORP comparative electrode that measures COD concentration by titration of redox potential with an indicator electrode.

본 발명은 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극에 관한 것으로, 보다 상세하게는 COD 측정장비의 반응조내에 삽입되어 ORP 지시전극과 함께 산화환원 전위차의 적정 COD 농도를 측정하는 ORP 비교전극에 수도수 냉곽관을 설치하여 측정값의 오차율을 최소화 하기위해 안출되었다.The present invention relates to an ORP comparative electrode equipped with a cooling tube using a redox potential difference of a COD measuring instrument, and more particularly, to an ORP inserted into a reaction tank of a COD measuring apparatus and measuring an appropriate COD concentration of a redox potential difference with an ORP indicating electrode. A tap water tube was installed at the counter electrode to minimize the error rate of the measured values.

환경오염이 점점 심해져가는 요즘, 하천으로 유입되는 오수 등의 오염 정도를 측정하기 위한 장치의 수요가 갈수록 증대되고 있다.As environmental pollution is getting worse, the demand for a device for measuring the degree of pollution of sewage and the like flowing into rivers is increasing.

또한, 각 공장에 설치되어 있는 하수 처리장에서 처리된 하수 처리의 정도를 수시로 측정하기 위해서는 자동화된 오염 측정장치가 필요하기에 관련 기관 및 기업들이 다각도로 연구개발에 임하고 있다.In addition, since an automated pollution measuring device is needed to measure the degree of sewage treatment treated at sewage treatment plants installed in each plant, related organizations and companies are working on research and development from various angles.

일반적으로 도 1 에 도시된 바와 같은 종래의 ORP 비교전극은, 화학 반응시 반응조 내부온도가 140˚C 이상 상승될 때 전극의 세라믹부 내부에 수용된 보충액이 가열되고, ORP 지시전극과 ORP 비교전극 사이에 발생하는 산화환원 전위의 간섭(전위 헌팅현상)을 측정하여 데이터화하게 된다.In general, as shown in FIG. 1, in a conventional ORP comparison electrode, a replenishing liquid contained in a ceramic part of the electrode is heated when the temperature inside the reactor rises by 140 ° C. or more during a chemical reaction, and the ORP indicator electrode and the ORP comparison electrode are heated. The interference (potential hunting phenomenon) of the redox potential occurring in the measurement is measured and made into data.

그러나, 전극의 세라믹부 내부에 수용된 보충액이 끓게 되면서, 다수의 기포가 발생하게 되며, 이로 인해 ORP 지시전극과 ORP 비교전극 사이에 발생하는 산화환원 데이터 측정의 오차 발생이 불가피한 구조적인 문제점을 수반하고 있다.However, as the replenishing solution contained in the ceramic part of the electrode is boiled, a large number of bubbles are generated, which leads to an inevitable structural problem in which redox data measurement errors occur between the ORP indicator electrode and the ORP comparison electrode. have.

본 발명은 상기와 같은 문제점을 해소하고자 안출된 것으로서, 본 발명의 목적은, ORP 비교전극 주위에 냉각수를 유입할 수 있는 냉각관을 추가적으로 구비시켜 세라믹부 내부에 수용되는 전극보충액의 온도상승으로 인한 끓는 현상 및 기포발생을 미연에 차단함으로써, 측정 데이터의 오차를 최소화함에 그 목적이 있다.The present invention has been made to solve the above problems, an object of the present invention, by providing a cooling tube that can introduce the cooling water around the ORP comparative electrode due to the temperature rise of the electrode replenishment solution accommodated inside the ceramic portion The purpose is to minimize the error of measurement data by preventing boiling and bubble generation in advance.

이러한 기술적 과제를 달성하기 위한 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극은, 냉각관의 일측에 수용되도록 구비되어 전극단자와 접지된 동선을 수용홀에 수용하되, 동선이 수용홀의 내주연과 소정거리 이격되도록 수용홀의 중심에 위치ㆍ구비시키고, 전극단자와 접지된 동선의 고정을 위해 동선의 하단부를 에두르는 세라믹 홀더가 수용홀의 하부를 관통하여 냉각관와 고정되는 전극부; 및 냉각관 내부에 소정부위가 수용되도록 구비되어 외부로부터 유입되는 냉각수를 냉각관 내부로 공급하고, 지속적인 냉각수 공급을 통해 전극부에서 발생하는 열을 회수한 후, 냉각관 외부로 배출하여 전극부의 온도를 일정하게 유지토록 하는 냉각수교관; 을 포함한다.ORP comparison electrode with a cooling tube using the redox potential difference of the COD measuring device according to the present invention for achieving the technical problem is provided to be accommodated on one side of the cooling tube to accommodate the electrode terminal and grounded copper wire in the receiving hole, An electrode where the copper wire is positioned and provided at the center of the accommodating hole so as to be spaced apart from the inner circumference of the accommodating hole, and the ceramic holder covering the lower end of the copper wire for fixing the electrode terminal and the grounded copper wire is fixed to the cooling tube through the lower part of the accommodating hole. part; And a predetermined portion is accommodated inside the cooling tube to supply the cooling water introduced from the outside into the cooling tube, recover heat generated in the electrode unit through continuous supply of cooling water, and discharge the heat to the outside of the cooling tube. Cooling water instructor to maintain a constant; .

또한, 전극부는, 수용홀 내부에 수용된 동선과의 산화환원을 위한 전극보충액을 충진ㆍ수용하는 것을 특징으로 한다.The electrode portion is characterized in that the electrode replenishment is filled and accommodated for redox with the copper wire housed inside the receiving hole.

또한, 냉각관는, φ11 내지 φ13 바람직하게는 φ11 규격의 둘레로 구성되어 내부에 전극부 및 냉각수교관을 수용하는 것을 특징으로 한다.Further, the cooling tube is configured around a diameter of φ11 to φ13, preferably φ11, and accommodates an electrode portion and a cooling water bridge therein.

또한, 전극부는, φ4.5 내지 φ5.5 바람직하게는 φ5 규격의 둘레로 구성되는 것을 특징으로 한다.In addition, the electrode portion is characterized by being configured around the φ4.5 to φ5.5, preferably φ5 standard.

또한, 수용홀은, φ2 내지 φ3 바람직하게는 φ2.5 규격의 둘레로 구성되는 것을 특징으로 한다.In addition, the accommodation hole is characterized by being configured around the φ2 to φ3 preferably φ2.5 standard.

또한, 냉각수교관은, ORP 비교전극 펌프로부터 유입되는 냉각수를 냉각관 내부로 공급하는 냉각수 투입관, 및 전극부에서 발생하는 열을 회수한 냉각수를 드레인 밸브로 배출하는 냉각수 배출관을 포함한다.The cooling water inductor also includes a cooling water inlet tube for supplying the cooling water introduced from the ORP comparative electrode pump into the cooling tube, and a cooling water discharge tube for discharging the cooling water recovered from the electrode portion to the drain valve.

그리고, 냉각수교관은, φ3.5 내지 φ4.5 바람직하게는 φ4 규격의 둘레로 구성되는 것을 특징으로 한다.Then, the cooling water inductor is characterized by consisting of a φ3.5 to φ4.5, preferably around the φ4 standard.

상기와 같은 본 발명에 따르면, ORP 비교전극 주위에 냉각수를 유입할 수 있는 냉각관을 추가적으로 구비시켜 세라믹부 내부에 수용되는 전극보충액의 온도상승으로 인한 열을 회수하여 끓는 현상 및 기포발생을 미연에 차단함으로써, 측정 데이터의 오차를 최소화하는 효과가 있다.According to the present invention as described above, by additionally providing a cooling tube for introducing the cooling water around the ORP comparison electrode to recover the heat due to the temperature rise of the electrode replenishment solution accommodated inside the ceramic portion, the boiling phenomenon and the occurrence of bubbles in advance By blocking, there is an effect of minimizing the error of the measurement data.

본 발명의 구체적인 특징 및 이점들은 첨부도면에 의거한 다음의 상세한 설명으로 더욱 명백해질 것이다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야 할 것이다. 또한, 본 발명에 관련된 공지 기능 및 그 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는, 그 구체적인 설명을 생략하였음에 유의해야 할 것이다.Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It should be interpreted in terms of meaning and concept. In addition, when it is determined that the detailed description of the known function and its configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, it should be noted that the detailed description is omitted.

본 발명의 구체적인 구성을 설명하기에 앞서, 도 2 를 참조하여 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)을 수용하는 반응조(1)에 대해 살피면 다음과 같다.Before explaining the specific configuration of the present invention, with reference to Figure 2 when looking at the reaction vessel (1) for receiving the ORP comparison electrode 100 with a cooling tube using the redox potential difference of the COD measuring instrument as follows.

반응조(1)는 ORP 비교전극(100) 및 지시전극을 지칭하는 산화환원전극과, 교반기, 유욕조, 반응조대, 온도센서 및 히터를 포함하여 구성된다.The reactor 1 includes an redox electrode that refers to the ORP comparison electrode 100 and the indicator electrode, a stirrer, an oil bath, a reaction bath, a temperature sensor, and a heater.

먼저, 반응조(1)는 파이프를 통해 검수 및 시약을 공급받고, 반응조(1)의 일측에 구비된 히터의 히팅을 통해 반응조 내부를 가열하여 반응조(1)에 수용된 시약을 산화시키며, 반응조(1)를 30˚C 내지 50˚C 바람직하게는 40˚C의 상온으로 냉각시켜 반응조(1)에 잔존하는 크롬성분을 환원시킨다.First, the reaction tank 1 receives the inspection and the reagent through a pipe, and heats the inside of the reaction tank through the heating of a heater provided on one side of the reaction tank 1 to oxidize the reagent contained in the reaction tank 1, the reaction tank (1) ) Is cooled to room temperature of 30 ° C to 50 ° C preferably 40 ° C to reduce the chromium component remaining in the reactor (1).

이어서, 반응조(1)에 수용된 온도센서를 통해 반응조(1)의 전위차값을 도출하고, 도 3 에 도시된 바와 같이 전위차값이 기 설정된 산화환원전위차 적정곡선의 당량점전위(a mV)까지 중크롬산칼륨용액을 첨가해 중크롬산칼륨량을 측정한다.Subsequently, the potential difference value of the reactor 1 is derived through a temperature sensor housed in the reactor 1, and as shown in FIG. 3, the potassium dichromate reaches the equivalent point potential (a mV) of the titration curve of the redox potential set in advance. A solution is added and the amount of potassium dichromate is measured.

도 4 는 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)을 도시한 도면인바, 냉각관(110), 전극부(120) 및 냉각수교관(130)을 포함하여 구성된다.4 is a view illustrating an ORP comparison electrode 100 having a cooling tube using a redox potential difference of the COD measuring apparatus according to the present invention, including a cooling tube 110, an electrode unit 120, and a cooling water inductor 130. It is configured by.

ORP 비교전극(100)은 냉각관(110) 내부의 일측에 전극단자(10)와 접지된 동선(20)을 수용하는 중공형상의 전극부(120)를 구비하고, 냉각관(110) 내부의 타측 에 원통형 냉각수교관(130)을 구비한다.The ORP comparison electrode 100 includes a hollow electrode part 120 that accommodates the electrode terminal 10 and a grounded copper wire 20 on one side of the cooling tube 110, and the inside of the cooling tube 110. A cylindrical coolant bridge 130 is provided on the other side.

여기서, 냉각관(110)는 φ11 내지 φ13 바람직하게는 φ11 규격의 둘레로 구성되어 내부에 전극부(120) 및 냉각수교관(130)을 수용한다.Here, the cooling tube 110 is configured around the φ 11 to φ 13 preferably φ 11 standard to accommodate the electrode portion 120 and the cooling water inductor 130 therein.

세부적으로, 전극부(120)는 냉각관(110) 일측에 수용되도록 구비되어 전극단자(10)와 접지된 동선(20)을 수용홀(121)에 수용하되, 동선(20)이 수용홀(121)의 내주연과 소정거리 이격되도록 수용홀(121)의 중심에 위치하여 구비한다.In detail, the electrode unit 120 is provided to be accommodated on one side of the cooling pipe 110 to accommodate the copper wire 20 grounded with the electrode terminal 10 in the accommodation hole 121, but the copper wire 20 is the accommodation hole ( It is provided at the center of the receiving hole 121 so as to be spaced apart from the inner circumference of the 121.

또한, 전극부(120)는 전극단자(10)와 접지된 동선(20)의 고정을 위해 동선(20)의 하단부를 에두르는 세라믹 홀더(122)가 수용홀(121)의 하부를 관통하여 냉각관(110)와 고정되도록 구성된다.In addition, the electrode part 120 is cooled by the ceramic holder 122 covering the lower end of the copper wire 20 through the lower portion of the receiving hole 121 to fix the copper wire 20 grounded with the electrode terminal 10. It is configured to be fixed with the tube (110).

이때, 전극부(120)의 둘레는 φ4.5 내지 φ5.5 바람직하게는 φ5 규격의 둘레로 구성되고, 수용홀(121)의 둘레는 φ2 내지 φ3 바람직하게는 φ2.5 규격의 둘레로 구성된다.At this time, the circumference of the electrode portion 120 is composed of φ4.5 to φ5.5 preferably φ5 standard circumference, and the circumference of the receiving hole 121 is configured to φ2 to φ3 preferably φ2.5 circumference. do.

아울러, 전극부(120)의 수용홀(121)은 내부에 수용된 동선(20)과의 산화환원을 위한 전극보충액(30)을 충진ㆍ수용한다. 여기서, 전극보충액(30)은 황산으로 구성될 수 있으나, 본 발명이 이에 국한되는 것은 아니며, 산화환원 반응을 유도하는 용액으로 이해함이 바람직하다.In addition, the receiving hole 121 of the electrode unit 120 fills and accommodates the electrode replenishment liquid 30 for redox with the copper wire 20 housed therein. Here, the electrode replenishment liquid 30 may be composed of sulfuric acid, but the present invention is not limited thereto, and it is preferable to understand the solution as an inducing redox reaction.

도 5 를 참조하여 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)의 냉각수교관(130)에 대해 살피면 아래와 같다.Referring to Figure 5 with respect to the cooling water inductor 130 of the ORP comparative electrode 100 with a cooling tube using the redox potential difference of the COD measuring instrument as follows.

냉각수교관(130)은 냉각관(110) 내부에 소정부위가 수용되도록 구비되며, 냉각수 투입관(131)과 연결ㆍ접속된 ORP 비교전극 펌프(40)로부터 유입되는 냉각수를 냉각관(110) 내부로 공급하여 ORP 비교전극 펌프(40)로부터 지속적으로 냉각수를 공급받아 전극부(120)에서 발생하는 열을 회수토록 한다.The cooling water inductor 130 is provided to accommodate a predetermined portion in the cooling pipe 110, and the cooling water flowing from the ORP comparative electrode pump 40 connected and connected to the cooling water input pipe 131 is inside the cooling pipe 110. The cooling water is continuously supplied from the ORP comparative electrode pump 40 to recover the heat generated from the electrode unit 120.

또한, 냉각수교관(130)은 냉각관(110) 상측에 냉각수 배출관(132)을 구비하여 전극부(120)에서 발생한 열을 회수한 냉각수를 냉각수 배출관(132)과 연결ㆍ접속된 드레인 밸브(50)로 배출한다. 이때, 냉각수교관(130)의 둘레는 φ3.5 내지 φ4.5 바람직하게는 φ4 규격의 둘레로 구성된다.In addition, the cooling water inductor 130 includes a cooling water discharge pipe 132 above the cooling pipe 110, and connects and connects the cooling water recovered from the heat generated by the electrode unit 120 to the cooling water discharge pipe 132. To be discharged. At this time, the circumference of the cooling water pipe 130 is composed of φ3.5 to φ4.5, preferably φ4 standard.

도 6 을 참조하여 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)의 작동양태를 살피면 아래와 같다.Referring to FIG. 6, the operating mode of the ORP comparison electrode 100 having the cooling tube using the redox potential difference of the COD measuring instrument is as follows.

먼저, 냉각관(110) 일측에 수용되도록 구비된 전극부(120)가 수용홀(121) 내부에 수용된 동선(20) 및 전극보충액(30)과의 화학반응에 따른 산화환원에 의해 열을 발생한다(S10).First, the electrode unit 120 provided to be accommodated on one side of the cooling tube 110 generates heat by redox due to a chemical reaction with the copper wire 20 and the electrode replenisher 30 accommodated in the accommodation hole 121. (S10).

이어서, ORP 비교전극 펌프(40)가 냉각수교관(130)의 냉각수 투입관(131)으로 냉각수를 공급한다(S20).Subsequently, the ORP comparison electrode pump 40 supplies the coolant to the coolant input pipe 131 of the coolant inductor 130 (S20).

뒤이어, 냉각수 투입관(131)으로 유입된 냉각수가 전극부(120)를 휘돌아 전극부(120)에 발생하는 열을 회수한다(S30).Subsequently, the coolant introduced into the coolant inlet pipe 131 may rotate through the electrode 120 to recover heat generated in the electrode 120 (S30).

그리고, 전극부(120)에서 발생한 열을 회수한 냉각수가 냉각수 배출관(132)을 통해 드레인 밸브(50)로 배출된다(S40).In addition, the coolant that recovers the heat generated by the electrode unit 120 is discharged to the drain valve 50 through the coolant discharge pipe 132 (S40).

이처럼, 냉각수교관(130)의 냉각수 투입관(131)으로 투입된 냉각수가 전극부(120)에서 발생하는 열을 회수하여 냉각수 배출관(132)으로 배출됨에 따라 전극 부(120)의 온도를 일정하게 유지된다.As such, the coolant introduced into the coolant inlet tube 131 of the coolant bridge 130 recovers heat generated from the electrode unit 120 and is discharged to the coolant discharge tube 132 to maintain a constant temperature of the electrode unit 120. do.

이상으로 본 발명의 기술적 사상을 예시하기 위한 바람직한 실시예와 관련하여 설명하고 도시하였지만, 본 발명은 이와 같이 도시되고 설명된 그대로의 구성 및 작용에만 국한되는 것이 아니며, 기술적 사상의 범주를 일탈함이 없이 본 발명에 대해 다수의 변경 및 수정이 가능함을 당업자들은 잘 이해할 수 있을 것이다. 따라서, 그러한 모든 적절한 변경 및 수정과 균등물들도 본 발명의 범위에 속하는 것으로 간주되어야 할 것이다.As described above and described with reference to a preferred embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as shown and described as described above, it is a deviation from the scope of the technical idea It will be understood by those skilled in the art that many modifications and variations can be made to the invention without departing from the scope of the invention. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

도 1 은 종래의 ORP 비교전극을 나타낸 구성도.1 is a block diagram showing a conventional ORP comparison electrode.

도 2 는 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)을 수용하는 반응조(1)를 도시한 도면.2 is a view showing a reaction vessel 1 for receiving an ORP comparison electrode 100 with a cooling tube using a redox potential difference of a COD measuring instrument according to the present invention.

도 3 은 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)의 적정곡선을 도시한 도면.3 is a diagram showing a titration curve of the ORP comparison electrode 100 with a cooling tube using the redox potential difference of the COD measuring device according to the present invention.

도 4 는 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)을 도시한 구성도.Figure 4 is a block diagram showing an ORP comparative electrode 100 with a cooling tube using the redox potential difference of the COD measuring instrument according to the present invention.

도 5 는 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)의 냉각수 투입 및 배출을 나타낸 예시도.5 is an exemplary view showing the cooling water input and discharge of the ORP comparative electrode 100 with a cooling tube using the redox potential difference of the COD measuring device according to the present invention.

도 6 은 본 발명에 따른 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극(100)의 작동양태를 도시한 순서도.Figure 6 is a flow chart showing the operating mode of the ORP comparison electrode 100 with a cooling tube using the redox potential difference of the COD meter according to the present invention.

** 도면의 주요 부분에 대한 부호의 설명 **** Description of symbols for the main parts of the drawing **

100: ORP 비교전극 110: 냉각관100: ORP comparative electrode 110: cooling tube

120: 전극부 121: 수용홀120: electrode portion 121: receiving hole

122: 세라믹 홀더 130: 냉각수교관122: ceramic holder 130: coolant inductor

131: 냉각수 투입관 132: 냉각수 배출관131: cooling water input pipe 132: cooling water discharge pipe

10: 전극단자 20: 동선10: electrode terminal 20: copper wire

30: 전극보충액 40: ORP 비교전극 펌프30: electrode supplement 40: ORP comparative electrode pump

50: 드레인 밸브 1: 반응조50: drain valve 1: reactor

Claims (7)

COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극에 있어서,In the ORP comparison electrode with a cooling tube using the redox potential difference of the COD meter, 냉각관의 일측에 수용되도록 구비되어 전극단자와 접지된 동선을 수용홀에 수용하되, 상기 동선이 수용홀의 내주연과 이격되도록 상기 수용홀의 중심에 위치시키고, 상기 동선과의 산화환원을 위해 상기 수용홀 내부에 전극보충액이 충전되며, 상기 전극단자와 접지된 동선의 고정을 위해 상기 동선의 하단부를 에두르는 세라믹 홀더가 상기 수용홀의 하부를 관통하여 상기 냉각관에 고정되는 전극부; 및It is provided to be accommodated on one side of the cooling tube to accommodate the copper wire grounded with the electrode terminal in the receiving hole, the copper wire is located in the center of the receiving hole so as to be spaced apart from the inner circumference of the receiving hole, the accommodation for redox with the copper wire An electrode part filled with an electrode replenishing liquid in the hole and having a ceramic holder surrounding the lower end of the copper wire for fixing the grounded copper wire to the electrode terminal, and fixed to the cooling tube through a lower portion of the receiving hole; And ORP 비교전극 펌프에 의해 외부로부터 유입되는 냉각수를 상기 냉각관 내부로 공급하는 냉각수투입관과 상기 전극부에서 발생하는 열을 회수한 냉각수를 드레인 배브로 배출하는 냉각수배출관으로 구성되어 상기 냉각관에 지속적인 냉각수 공급을 통해 상기 전극부의 온도를 일정하게 유지토록 하는 냉각수교관; It consists of a cooling water inlet tube for supplying the cooling water introduced from the outside by the ORP comparative electrode pump to the inside of the cooling tube and a cooling water discharge tube for discharging the cooling water recovered from the electrode portion to the drain bar. Cooling water inlet to maintain a constant temperature through the supply of cooling water; 을 포함하는 것을 특징으로 하는 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극. ORP comparison electrode with a cooling tube using the redox potential difference of the COD measuring instrument comprising a. 삭제delete 제 1 항에 있어서,The method of claim 1, 상기 냉각관는,The cooling tube, φ11 내지 φ13 바람직하게는 φ11 규격의 둘레로 구성되어 내부에 상기 전극부 및 냉각수교관을 수용하는 것을 특징으로 하는 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극.φ11 to φ13 Preferably ORP comparative electrode with a cooling tube using the redox potential difference of the COD measuring instrument, characterized in that it is configured around the φ11 standard to accommodate the electrode portion and the cooling water inductor therein. 제 1 항에 있어서,The method of claim 1, 상기 전극부는, φ4.5 내지 φ5.5 바람직하게는 φ5 규격의 둘레로 구성되는 것을 특징으로 하는 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극.The electrode portion, φ4.5 to φ5.5 preferably ORP comparative electrode with a cooling tube using the redox potential difference of the COD measuring instrument, characterized in that configured around the φ5 standard. 제 1 항에 있어서,The method of claim 1, 상기 수용홀은,The accommodation hole, φ2 내지 φ3 바람직하게는 φ2.5 규격의 둘레로 구성되는 것을 특징으로 하는 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극.φ2 to φ3 Preferably, an ORP comparative electrode with a cooling tube using the redox potential difference of the COD measuring instrument, characterized in that it is configured around a φ2.5 specification. 삭제delete 제 1 항에 있어서,The method of claim 1, 상기 냉각수교관은,The coolant pipe, φ3.5 내지 φ4.5 바람직하게는 φ4 규격의 둘레로 구성되는 것을 특징으로 하는 COD 측정기의 산화환원 전위차를 이용한 냉각관이 달린 ORP 비교전극.An ORP comparative electrode with a cooling tube using a redox potential difference of a COD measuring instrument, characterized in that it comprises a φ3.5 to φ4.5, preferably around a φ4 specification.
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Publication number Priority date Publication date Assignee Title
CN103777030A (en) * 2014-01-26 2014-05-07 石家庄德润环保科技有限公司 Automatic laboratory chemical oxygen demand analysis device
KR101487250B1 (en) 2014-11-27 2015-01-28 정창구 COD Testing Apparatus Reference Electrode
CN106596668A (en) * 2016-11-23 2017-04-26 深圳市朗石科学仪器有限公司 COD measurement system

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KR20000073401A (en) * 1999-05-10 2000-12-05 김정호 Method and apparatus for analyzing an organism by COD outputed in using Cr-method
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CN103777030A (en) * 2014-01-26 2014-05-07 石家庄德润环保科技有限公司 Automatic laboratory chemical oxygen demand analysis device
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