KR20120019584A - A bolt structure for temperature sensor fixing - Google Patents

A bolt structure for temperature sensor fixing Download PDF

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Publication number
KR20120019584A
KR20120019584A KR1020100082857A KR20100082857A KR20120019584A KR 20120019584 A KR20120019584 A KR 20120019584A KR 1020100082857 A KR1020100082857 A KR 1020100082857A KR 20100082857 A KR20100082857 A KR 20100082857A KR 20120019584 A KR20120019584 A KR 20120019584A
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KR
South Korea
Prior art keywords
temperature sensor
sensor
fixing bolt
hole
bolt
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KR1020100082857A
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Korean (ko)
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KR101173768B1 (en
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김영호
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한전케이피에스 주식회사
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Priority to KR1020100082857A priority Critical patent/KR101173768B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08—Protective devices, e.g. casings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PURPOSE: A bolt for fixing a main turbine journal bearing temperature sensor, which can prevent damage to a sensor cable and temperature sensor, is provided to prevent negative effect of the disconnection generation due to the cable tangling phenomenon in rotation of bolts. CONSTITUTION: A bolt for fixing a main turbine journal bearing temperature sensor comprises a body part(21), a bolt head part(22), a central hole(23) and an open groove(24). The screw thread is formed in the body part and a sensor hole(2). The bolt head part is integrally connected in one end of the body part. The bolt head part accomplishes the polygonal shape. The central hole guides a sensor cable(11) connected to the back-end of the temperature sensor. The central hole passes through the center of the bolt head part and body part.

Description

주터빈 저널베어링 온도센서 고정용 볼트{A BOLT STRUCTURE FOR TEMPERATURE SENSOR FIXING}Main turbine journal bearing temperature sensor fixing bolt {A BOLT STRUCTURE FOR TEMPERATURE SENSOR FIXING}

본 발명은 저널베어링의 온도센서 고정용 볼트에 관한 것으로서, 더욱 상세하게는 저널베어링에 가공 형성된 센서홀에서의 내부에 삽입 설치된 온도센서의 고정을 위해 체결되는 볼트의 체결 및 분리작업과정에서 온도센서 및 센서케이블의 손상이 방지되어질 수 있도록 하기 위한 고정용 볼트 구조에 관한 것이다.The present invention relates to a bolt for fixing a temperature sensor of a journal bearing, and more particularly, to a temperature sensor in a process of fastening and detaching a bolt fastened for fixing a temperature sensor inserted into an interior of a sensor hole formed in a journal bearing. And a fixing bolt structure for preventing damage to the sensor cable.

일반적으로, 수,화력, 원자력발전소 및 산업생산 공장에 설치된 주터빈의 저널베어링에는 온도측정을 위한 다수의 온도센서를 장착하기 위한 장착홀이 가공 형성되어지며, 이러한 각각의 장착홀에 온도센서가 삽입 설치되어짐으로서 실제 운전 중인 저널베어링 메탈의 온도 분포를 연속적으로 측정하고, 나아가 저널베어링의 운전상태를 정확히 점검할 수 있도록 하게된다.In general, journal bearings of main turbines installed in water, thermal power, nuclear power plants, and industrial production plants are provided with mounting holes for mounting a plurality of temperature sensors for temperature measurement. By inserting, it is possible to continuously measure the temperature distribution of the journal bearing metal in actual operation, and furthermore, to accurately check the operating state of the journal bearing.

이러한 온도센서는 이종금속을 접합하여 측정부위에 접촉하고 베어링 표면 온도에 따른 기전력의 변화값을 환산하여 온도를 감시하게 되는 것이다.Such a temperature sensor is to join the dissimilar metal to contact the measurement site and to monitor the temperature by converting the change in electromotive force according to the bearing surface temperature.

한편, 저널 베어링 온도센서 고정방법은 저널베어링 표면의 가공된 센서홀에 온도센서를 삽입하고, 이탈 방지를 위한 고정용 볼트를 센서 센서홀 입구부에 체결하여 고정하게 된다.Meanwhile, in the method of fixing the journal bearing temperature sensor, the temperature sensor is inserted into the processed sensor hole on the surface of the journal bearing, and the fixing bolt for preventing the separation is fastened to the sensor sensor hole inlet.

그러나, 종래 온도센서 고정용 볼트는 센서 케이블의 안내를 위한 중공형 구조를 이루고 있으며, 상부에는 드라이버와 같은 공구를 사용할 수 있도록 공구홈이 형성되어져 있어 볼트를 조이거나 풀때 온도센서 후단측에 연결된 케이블이 공구와 간섭되어 꼬이게 되고, 이러한 케이블 꼬임현상이 심할경우 온도센서와 연결부위에서 절연파괴 현상이 발생하는 등의 문제점이 있었다.However, the conventional temperature sensor fixing bolt has a hollow structure for guiding the sensor cable, and a tool groove is formed in the upper part so that a tool such as a driver can be used, so that the cable connected to the rear end of the temperature sensor when tightening or loosening the bolt If the cable is twisted and interfered with this tool, there is a problem such that the insulation breakdown occurs at the temperature sensor and the connection part when the cable twisting phenomenon is severe.

특히, 기존 볼트를 고정시 드라이버가 케이블과 접촉할 수 밖에 없고, 이러한 잦은 접촉으로 인해 절연피복이 손상되는 문제점이 있었다.
In particular, when fixing the existing bolt, the driver has to contact with the cable, there is a problem that the insulation coating is damaged by such frequent contact.

본 발명은 상기한 종래 센서 고정볼트 사용에 있어서의 문제점을 개선하기 위해 제안된 것으로서, 저널베어링의 센서홀에 센서 고정볼트를 착탈작업시 센서 케이블의 꼬임현상이 발생되지 않는 고정볼트 구조를 제공함으로서 센서손상을 방지하며 작업 편의성을 향상시키도록 하는데 목적이 있다.The present invention has been proposed to improve the problems in the use of the conventional sensor fixing bolt, by providing a fixing bolt structure that does not cause the twisting of the sensor cable when the sensor fixing bolt in the sensor hole of the journal bearing detachable operation. The purpose is to prevent damage to the sensor and to improve work convenience.

상기 목적을 이루기 위한 본 발명은, 저널베어링에 형성된 센서홀에 착탈 되어 온도센서의 이탈을 방지토록 하는 온도센서 고정용 볼트에 있어서, 상기 고정용 볼트는 센서홀에 나사결합이 이루어지도록 나사산이 형성된 몸통부와, 상기 몸통부의 일단부에 일체로 연결되어 다각형상을 이루는 볼트머리부로 이루어지며; 상기 고정용 볼트는 온도센서의 후단부와 연결된 센서케이블의 안내를 위해 몸통부 및 볼트머리부의 중심을 관통하는 중앙통공이 형성되고; 상기 중앙통공에는 외부와 연통되도록 일측이 개방된 개방홈이 형성된 것을 특징으로 한다.The present invention for achieving the above object, in the temperature sensor fixing bolt to be detached to the sensor hole formed in the journal bearing to prevent the detachment of the temperature sensor, the fixing bolt is threaded to be screwed to the sensor hole A body and a bolt head which is integrally connected to one end of the body to form a polygon; The fixing bolt has a central hole penetrating the center of the body portion and the bolt head for guiding the sensor cable connected to the rear end of the temperature sensor; The central through-hole is characterized in that the open groove formed on one side open to communicate with the outside.

이러한 본 발명의 센서 고정용 볼트는, 공구를 이용한 저널베어링의 센서홀 체결 또는 분리 작업시 내부에 삽입된 온도센서로 부터 연장되어진 센서케이블과의 접촉 및 간섭이 방지됨으로서 볼트 회전시 케이블 꼬임현상에 따른 절연피복 손상 및 단선 발생 등의 악영향이 방지되는 효과를 나타낸다.The sensor fixing bolt of the present invention, the cable hole phenomenon during the rotation of the bolt is prevented by contact and interference with the sensor cable extended from the temperature sensor inserted therein during the sensor hole fastening or detachment of the journal bearing using a tool. This has the effect of preventing adverse effects such as insulation coating damage and disconnection.

특히, 센서가 센서홀에 삽입되어 센서케이블이 기 설치된 상태에서도 고정용 볼트의 체결 또는 분리가 용이하게 이루어지는 이점을 갖게된다.In particular, the sensor is inserted into the sensor hole has the advantage that it is easy to fasten or detach the fixing bolt even when the sensor cable is already installed.

도 1은 본 발명 센서 고정볼트의 외관 사시도.
도 2는 본 발명 센서 고정볼트의 평면 구조도.
도 3은 본 발명 센서 고정볼트의 측단면도.
도 4는 본 발명 센서 고정볼트의 저널베어링 볼트홀 분리 상태도.
도 5는 본 발명 센서 고정볼트의 볼트홀 결합 작업도.
도 6은 본 발명 센서 고정볼트의 결합상태 개략 단면도.
도 7은 본 발명의 제1응용예에 따른 고정볼트의 요부 상세도.
도 8은 본 발명의 제2응용예에 따른 고정볼트 측 단면도.1 is an external perspective view of a sensor fixing bolt of the present invention.
Figure 2 is a plan view of the sensor fixing bolt of the present invention.
Figure 3 is a side cross-sectional view of the sensor fixing bolt of the present invention.
Figure 4 is a journal bearing bolt hole separation state of the sensor fixing bolt of the present invention.
5 is a bolt hole coupling operation of the sensor fixing bolt of the present invention.
Figure 6 is a schematic cross-sectional view of the coupling state of the sensor fixing bolt of the present invention.
7 is a detailed view of the main portion of the fixing bolt according to the first application of the present invention.
8 is a cross-sectional view of the fixing bolt side according to the second application of the present invention.

이하, 본 발명의 구체적인 실시 예를 첨부 도면을 참조하여 상세히 살펴보기로 한다.Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

먼저, 본 발명의 일 실시 예에 따른 센서 고정볼트 구조를 도 1 내지 도 3을 통해 살펴보면, 본 발명의 고정용 볼트(20)는 센서홀(2)에 나사치합을 위해 외주면에 나사홈이 가공된 몸통부(21)와, 공구에 의한 회전력이 용이하게 전달될 수 있도록 다각형상을 이루는 볼트머리부(22)로 이루어져 있다.First, referring to the sensor fixing bolt structure according to an embodiment of the present invention through FIGS. 1 to 3, the fixing bolt 20 of the present invention has a screw groove on the outer circumferential surface for screwing into the sensor hole 2. The machined body portion 21 and the bolt head 22 is formed in a polygonal shape so that the rotational force by the tool can be easily transmitted.

특히, 본 발명의 고정용 볼트(20)는 길이방향으로 중심을 관통하는 중앙통공(23)이 원형의 형태로 형성되어져 있으며, 고정용 볼트(20)의 측벽면에는 전체 길이방향을 따라 일측이 개방되어 중앙통공(23)과 연결된 개방홈(24)이 형성되어져 있음을 확인할 수 있다.In particular, the fixing bolt 20 of the present invention is formed in a circular shape of the central through-hole 23 penetrating the center in the longitudinal direction, one side along the entire longitudinal direction on the side wall surface of the fixing bolt 20. It can be seen that the open groove 24 is opened and connected to the central through hole 23.

즉, 이러한 중앙통공(23)과 개방홈(24)은 몸통부(21)와 볼트머리부(22)에 걸쳐 형성되어지게 된다.That is, the central through hole 23 and the open groove 24 is formed over the body portion 21 and the bolt head 22.

이와 같은 구조를 이루는 본 발명 센서 고정용 볼트(20)의 사용에 따른 작용효과를 살펴보기로 한다.The effect of using the sensor fixing bolt 20 of the present invention constituting such a structure will be described.

본 발명의 센서 고정용 볼트(20)는 도 4 내지 도 6에서와 같이 저널베어링(1)에 가공 형성된 센서홀(2)에 온도센서(10)를 삽입시킨 상태에서 온도센서(10)의 이탈을 방지하기 위해 센서홀(2)에 체결되어지게 되면 센서케이블(11)과의 간섭이 발생되지 않는 가운데 용이한 작업이 이루어질 수 있게 된다.The sensor fixing bolt 20 of the present invention is detached from the temperature sensor 10 in a state in which the temperature sensor 10 is inserted into the sensor hole 2 formed in the journal bearing 1 as shown in FIGS. 4 to 6. When it is fastened to the sensor hole (2) in order to prevent the interference with the sensor cable (11) can be made easy work.

즉, 온도센서(10) 후단측으로 연결되어져 있는 센서케이블(11)이 센서홀(2) 외부로 연장되어져 있는 상태에서 작업자가 고정용 볼트(20)를 센서홀(2)에 위치시킨 후 센서케이블(11)을 개방홈(24)을 통해 중앙통공(23)으로 인입시키고, 도 5에서와 같이 공구를 이용하여 볼트머리부(22)를 일방향으로 돌려서 센서홀(2)에 나사결합시키게 된다.That is, after the sensor cable 11 connected to the rear end of the temperature sensor 10 extends outside the sensor hole 2, the operator places the fixing bolt 20 in the sensor hole 2 and then the sensor cable. (11) is introduced into the central through-hole 23 through the open groove 24, and screwed to the sensor hole 2 by turning the bolt head 22 in one direction using a tool as shown in FIG.

이때, 센서케이블(11)은 중앙통공(23)에 위치되어져 있기 때문에 고정용 볼트(20)가 회전되더라도 함께 회전이 이루어지지 않게 되어 꼬임현상이 방지되어질 수 있게 되는 것이다.At this time, since the sensor cable 11 is located in the central through-hole 23, even if the fixing bolt 20 is rotated, the sensor cable 11 is not rotated together so that the twisting phenomenon can be prevented.

또한, 정비기간에 고정용 볼트(20)을 센서홀(2)로 부터 분해하게 되면 센서케이블(11)에 영향을 받지 않고 용이한 분해작업이 이루어지게 된다.In addition, when the fixing bolt 20 is disassembled from the sensor hole 2 during the maintenance period, the disassembly operation is easily performed without being affected by the sensor cable 11.

따라서, 볼트의 분해 및 결합작업시 센서케이블(11)과의 간섭에 의한 악영향이 방지될 수 있게 됨으로 작업효율을 향상시키게 됨을 알 수 있다.
Therefore, it can be seen that when the disassembly and coupling operation of the bolt can be prevented adverse effects due to interference with the sensor cable 11 to improve the work efficiency.

한편, 도 7은 본 발명의 제1응용예에 따른 고정용 볼트(20)에 단속스프링(25)이 설치된 형태를 나타낸 것이다.On the other hand, Figure 7 shows a form in which the intermittent spring 25 is installed in the fixing bolt 20 according to the first application of the present invention.

즉, 도시된 바와 같이 볼트머리부(22)측에 형성된 개방홈(24)에 센서케이블(3)의 단속을 위해 삼각형 형상을 이루는 단속스프링(25)을 구비시킨 것이다.That is, as shown, the intermittent springs 25 having a triangular shape are provided in the open grooves 24 formed on the bolt head 22 side to intercept the sensor cables 3.

이와 같이 구비된 단속스프링(25)은 센서케이블(11)의 자유로운 이동을 단속하기 위한 것으로서, 단속스프링(25)의 자체 탄성력으로 인해 센서케이블(11)의 중앙통공(23)측으로 삽입 또는 이탈이 가능하며, 평상시에는 센서케이블(11)이 개방홈(24)부위에 위치되지 않고 항상 중앙통공(23)에 위치하도록 가이드하는 기능을 수행하게 된다.The intermittent spring 25 provided as described above is for intermittent free movement of the sensor cable 11, and is inserted into or detached from the center cable 23 of the sensor cable 11 due to the elastic force of the intermittent spring 25. It is possible to perform the function of guiding the sensor cable 11 is always located in the central through hole 23 is not always located in the open groove 24 portion.

따라서, 센서홀(2)로 부터 고정용 볼트(20)의 체결 또는 분리를 위한 회전작업시 센서케이블(11)이 개방홈(24) 부위에 위치함으로 인한 꼬임현상 발생이 보다 원천적으로 방지되어질 수 있게 됨을 알 수 있다.Therefore, in the rotation operation for fastening or detaching the fixing bolt 20 from the sensor hole 2, the occurrence of the twisting phenomenon due to the position of the sensor cable 11 in the open groove 24 can be prevented more fundamentally. It can be seen that.

또한, 도 8은 본 발명의 제2응용예에 따른 보호층(26) 구성상태를 나타낸 것으로서, 고정용 볼트(20)의 몸통부(21) 선단부에 탄력성을 갖는 우레탄 재질의 보호층(26)을 형성시킴으로서, 센서홀(2) 체결시 온도센서(10)와의 직접 접촉에 따른 완충기능 및 절연기능이 이루어질 수 있도록 한 것이다.In addition, Figure 8 shows the protective layer 26 configuration according to the second application of the present invention, the protective layer 26 of the urethane material having elasticity in the front end portion of the body portion 21 of the fixing bolt 20 By forming a, it is to ensure that the buffer function and the insulation function according to the direct contact with the temperature sensor 10 when the sensor hole (2) is fastened.

이에 따라, 고정용 볼트(20)의 센서홀(2) 체결시 선단부의 우레탄 보호층(26)이 온도센서(10)와 직접 접촉이 이루어지게 됨으로서 온도센서(10)를 보다 안정적으로 보호함과 함께 절연효과를 나타낼 수 있게 된다.Accordingly, the urethane protective layer 26 at the tip portion of the fixing bolt 20 is directly contacted with the temperature sensor 10 when the fixing hole 20 is fastened, thereby more stably protecting the temperature sensor 10. The insulation effect can be exhibited together.

1 : 저널베어링 2 : 센서홀
10 : 온도센서 11 : 센서케이블
20 : 고정용 볼트 21 : 몸통부
22 : 볼트머리부 23 : 중앙통공
24 : 개방홈 25 : 단속스프링
26 : 보호층1: Journal Bearing 2: Sensor Hole
10: temperature sensor 11: sensor cable
20: fixing bolt 21: the body
22: bolt head 23: central hole
24: open groove 25: intermittent spring
26: protective layer

Claims (5)

저널베어링(1)에 형성된 센서홀(2)에 착탈 되어 온도센서(10)의 이탈을 방지토록 하는 온도센서 고정용 볼트(20)에 있어서,
상기 고정용 볼트(20)는 센서홀(2)에 나사결합이 이루어지도록 나사산이 형성된 몸통부(21)와, 상기 몸통부(21)의 일단부에 일체로 연결되어 다각형상을 이루는 볼트머리부(22)로 이루어지며;
상기 고정용 볼트(20)는 온도센서(10)의 후단부와 연결된 센서케이블(11)의 안내를 위해 몸통부(21) 및 볼트머리부(22)의 중심을 관통하는 중앙통공(23)이 형성되고;
상기 중앙통공(23)에는 외부와 연통되도록 일측이 개방된 개방홈(24)이 형성된 것을 특징으로 하는 주터빈 저널베어링 온도센서 고정용 볼트.In the temperature sensor fixing bolt 20 to be detached from the sensor hole (2) formed in the journal bearing (1) to prevent the separation of the temperature sensor 10,
The fixing bolt 20 is connected to the body portion 21 is formed with a screw thread so that the screw hole is made to the sensor hole 2, and the bolt head portion integrally connected to one end of the body portion 21 to form a polygon Consisting of (22);
The fixing bolt 20 has a central hole 23 penetrating the center of the body portion 21 and the bolt head 22 to guide the sensor cable 11 connected to the rear end of the temperature sensor 10. Formed;
The central through hole 23, the main turbine journal bearing temperature sensor fixing bolt, characterized in that the open groove 24 is open one side is formed to communicate with the outside. 청구항 1에 있어서,
상기 볼트머리부(22)측에 형성된 개방홈(24)에는 센서케이블(3)의 단속을 위해 삼각형 형상을 이루는 단속스프링(25)이 구비된 것을 특징으로 하는 주터빈 저널베어링 온도센서 고정용 볼트.The method according to claim 1,
The main turbine journal bearing temperature sensor fixing bolt, characterized in that the opening groove 24 formed on the bolt head 22 side is provided with an intermittent spring 25 having a triangular shape for the intermittence of the sensor cable 3. . 청구항 1에 있어서,
상기 고정용 볼트(20)의 몸통부(21) 선단부에는 온도센서(10)와의 접촉시 완충 및 절연을 위한 탄력성 재질의 보호층(26)이 구비된 것을 특징으로 하는 주터빈 저널베어링 온도센서 고정용 볼트.The method according to claim 1,
The main turbine journal bearing temperature sensor is fixed to the front end of the body portion 21 of the fixing bolt 20 is provided with a protective layer 26 of a resilient material for buffering and insulating when contacting the temperature sensor 10. Bolts. 청구항 3에 있어서,
상기 보호층(26)은 우레탄 재질로 이루어진 것을 특징으로 하는 주터빈 저널베어링 온도센서 고정용 볼트.The method according to claim 3,
The protective layer 26 is a main turbine journal bearing temperature sensor fixing bolt, characterized in that made of urethane material. 청구항 3에 있어서,
상기 보호층(26) 역시 몸통부(21)로 부터 중앙통공(23) 및 개방홈(24) 연장 형성된 것을 특징으로 하는 주터빈 저널베어링 온도센서 고정용 볼트.The method according to claim 3,
The protective layer 26 is also a main turbine journal bearing temperature sensor fixing bolt, characterized in that formed from the body portion 21 through the central hole (23) and the opening groove (24) extending.
KR1020100082857A 2010-08-26 2010-08-26 A bolt structure for temperature sensor fixing KR101173768B1 (en)

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CN103967909A (en) * 2014-04-25 2014-08-06 徐存然 Bolt with temperature measuring device
WO2018177675A1 (en) * 2017-03-27 2018-10-04 Fischerwerke Gmbh & Co. Kg Arrangement of an anchor in an anchoring hole, and fastening system
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