WO2021225220A1 - Dispositif de mesure de pression interfaciale - Google Patents

Dispositif de mesure de pression interfaciale Download PDF

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Publication number
WO2021225220A1
WO2021225220A1 PCT/KR2020/009093 KR2020009093W WO2021225220A1 WO 2021225220 A1 WO2021225220 A1 WO 2021225220A1 KR 2020009093 W KR2020009093 W KR 2020009093W WO 2021225220 A1 WO2021225220 A1 WO 2021225220A1
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WO
WIPO (PCT)
Prior art keywords
semiconducting
pressure measuring
interface pressure
unit
cable
Prior art date
Application number
PCT/KR2020/009093
Other languages
English (en)
Korean (ko)
Inventor
안성원
김동욱
김민아
김영관
이용욱
Original Assignee
일진전기 주식회사
대한전선 주식회사
에이치디씨현대이피 주식회사
(주)티에스씨
목포해양대학교 산학협력단
한국전기산업기술연구조합
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020200055076A external-priority patent/KR102674133B1/ko
Application filed by 일진전기 주식회사, 대한전선 주식회사, 에이치디씨현대이피 주식회사, (주)티에스씨, 목포해양대학교 산학협력단, 한국전기산업기술연구조합 filed Critical 일진전기 주식회사
Publication of WO2021225220A1 publication Critical patent/WO2021225220A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Definitions

  • the present invention relates to an interfacial pressure measuring device, and more particularly, to an interfacial pressure measuring device capable of reducing interfacial pressure measuring cost by being recyclable.
  • a fixing method of fixing the interfacial pressure measuring sensor to the cable using silicone or an adhesive is used to install the interfacial pressure measuring sensor on the cable.
  • the measurement information may not be properly obtained due to damage to the interface pressure measurement sensor, or the interface pressure measurement sensor may not be recycled. For this reason, there is a problem in that the cost of measuring the interfacial pressure is high. Therefore, there is a need to improve it.
  • An object of the present invention is to provide an interfacial pressure measuring device, which has been created by the above necessity, and can be recycled, thereby reducing the interfacial pressure measuring cost.
  • the interface pressure measuring apparatus of the present invention includes: a cable unit in which a mounting groove is formed; a mounting bar portion detachably mounted to the mounting groove portion; an interface pressure measuring sensor module unit detachably mounted on the mounting bar; and a connecting material installed in the cable unit so as to be in close contact with the cable unit, the mounting bar unit, and the interface pressure measuring sensor module unit, wherein the interface pressure measuring sensor module unit includes the connecting material including the cable unit, the mounting bar unit and the interface pressure measuring sensor module unit. It is characterized in that the interfacial pressure generated while in close contact with the interfacial pressure measuring sensor module part is measured.
  • the cable unit may include: an inner cable having a conductor unit and an inner semiconducting unit surrounding the conductor unit; and an external cable having an insulating member surrounding the inner semiconducting part and an external semiconducting part surrounding the insulating member, wherein the mounting groove is formed to include at least one of the insulating member and the external semiconducting part characterized in that
  • the cable part is characterized in that it is provided with a finger groove connected to the mounting groove.
  • the mounting bar portion is arranged to be spaced apart in the longitudinal direction, it characterized in that it has a plurality of sensor installation portions to which the interface pressure measurement sensor module portion is installed, respectively.
  • the interface pressure measurement sensor module part is disposed on the sensor installation part, and is connected to an interface pressure measurement sensor for measuring an interface pressure generated by the connection material, and the interface pressure measurement sensor, and the interface pressure measurement sensor an interface pressure measuring sensor unit having a wire unit for supplying electric power to; and a coupling part coupled to the sensor installation part to fix the position of the interface pressure measuring sensor.
  • the sensor installation part the sensor hole part to which the interface pressure measurement sensor is mounted; a coupling hole part connected to the sensor hole part and coupled to the coupling part; and a wire arrangement part connected to the sensor hole part and the coupling hole part, and in which the wire part is disposed.
  • a first screw thread is formed in the coupling hole portion, and a second screw thread screwed with the first screw thread is formed in the coupling portion.
  • connection material may include: an insulating part surrounding the cable part, the mounting bar part, and the interface pressure measurement sensor module part; a first semiconducting part provided in the central part of the insulating part; and a pair of second semiconducting parts respectively provided at both ends of the insulating part.
  • the plurality of sensor installation units may include a first position facing the first semiconducting unit, a second position facing the second semiconducting unit, and the first semiconducting unit and the second semiconducting unit on the mounting bar unit. It is disposed between, and characterized in that each is positioned at a third position facing the insulating portion.
  • the second semiconducting unit may include: a 2-1 semiconducting unit provided at both ends of the insulating unit; and a 2-2 second semiconducting part connected to the 2-1 th semiconducting part and disposed between the first and 2-1 semiconducting parts, wherein the second position is the 2-1 th semiconducting part. and a 2-1 position positioned at the central portion of the semiconducting unit, and a 2-2 position located at a portion where the 2-1 th semiconducting unit and the 2-2 th semiconducting unit are connected, wherein the sensor installation unit includes: It is characterized in that it is positioned at the 2-1 position and the 2-2 position.
  • the interface pressure measuring device can be recycled even after measuring the interface pressure through the mounting bar part detachably mounted on the mounting groove formed in the mounting bar part and the interface pressure measuring sensor module part detachably mounted on the mounting bar part. , there is an effect that the cost of measuring the interfacial pressure can be reduced.
  • the interface pressure measurement sensor module part is in contact with various positions of the connection material. There is an effect of accurately measuring the interfacial pressure generated by the connection material.
  • FIG. 1 is a perspective view schematically illustrating an interface pressure measuring apparatus according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1 .
  • FIG. 3 is a cross-sectional view taken along line B-B' of FIG. 1 .
  • FIG. 4 is a cross-sectional view taken along line C-C' of FIG. 1 .
  • FIG. 5 is a view illustrating a state in which a connection material of an interface pressure measuring apparatus is separated from a cable part according to an embodiment of the present invention.
  • FIG. 6 is a view showing a state in which the interface pressure measuring sensor module part is separated from the mounting bar part separated from the cable part of the interface pressure measuring device according to an embodiment of the present invention.
  • FIG. 7 is a view of FIG. 6 viewed from another direction.
  • FIG. 8 is a cross-sectional view taken along line A-A' of FIG. 6 .
  • FIG. 1 is a perspective view schematically showing an interface pressure measuring apparatus according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along AA' of FIG. 1
  • FIG. 3 is a cross-sectional view taken along BB' of FIG. 1
  • FIG. 5 is a view showing a state in which the connecting material of the interface pressure measuring apparatus according to an embodiment of the present invention is separated from the cable part
  • FIG. 6 is an interface pressure measuring apparatus according to an embodiment of the present invention. It is a view showing a state in which the interface pressure measuring sensor module part is separated from the mounting bar part separated from the cable part
  • FIG. 7 is a view viewed from the other direction
  • an interface pressure measuring apparatus 1 includes a cable part 100 , a mounting bar part 200 , an interface pressure measuring sensor module part 300 , and a connecting material 400 . ) is included.
  • a mounting groove 130 is formed in the cable part 100 .
  • the mounting groove 130 is formed on the cable part 100 to be elongated in the longitudinal direction of the cable part 100 .
  • the cable part 100 has a finger groove part 140 connected to the mounting groove part 130 . Accordingly, the mounting bar part 200 mounted on the mounting groove part 130 of the cable part 100 can be easily separated from the mounting groove part 130 .
  • the mounting bar 200 is detachably mounted to the mounting groove 130 .
  • the mounting bar 200 is detachably mounted to the mounting groove 130 in a shape corresponding to the mounting groove 130 .
  • the mounting bar 200 may be smaller than the size of the mounting groove 130 .
  • the mounting bar part 200 may be formed to be round so that the upper side is placed on the circumference of the cable part 100 .
  • the mounting bar parts 200 are arranged to be spaced apart in the longitudinal direction, the interface pressure measuring sensor module parts 300 are installed, respectively, and a plurality of sensor installation parts 210 are provided.
  • the interface pressure measurement sensor module unit 300 is detachably mounted on the mounting bar unit 200 .
  • a plurality of interface pressure measurement sensor module units 300 may be respectively mounted on a plurality of sensor installation units 210 formed to be spaced apart from each other in the longitudinal direction on the mounting bar unit 200 .
  • connection material 400 is installed in the cable part 100 so as to be in close contact with the cable part 100 , the mounting bar part 200 , and the interface pressure measurement sensor module part 300 .
  • the connection material 400 is installed in the cable part 100 so as to surround the cable part 100 , the mounting bar part 200 , and the interface pressure measurement sensor module part 300 in a cylindrical shape.
  • the connection material 400 may include a rubber material, that is, a liquid silicone rubber (LSR) material.
  • LSR liquid silicone rubber
  • connection material 400 when the connection material 400 is installed in the cable part 100, it is restored to its original state by the elastic restoring force and is in close contact with the cable part 100, the mounting bar part 200 and the interface pressure measurement sensor module part 300. .
  • the connecting material 400 is restored to its original state by the elastic restoring force, and is in close contact with the cable part 100 to generate a pressure, that is, an interfacial pressure.
  • the generated interfacial pressure must have a pressure value greater than or equal to a predetermined value so that an electrical problem does not occur.
  • the connection material 400 includes an insulating part 410 , a first semiconducting part 420 , and a pair of second semiconducting parts 430 (refer to FIG. 2 ).
  • the insulating part 410 surrounds the cable part 100 , the mounting bar part 200 , and the interface pressure measurement sensor module part 300 .
  • the insulating part 410 may include a rubber material, that is, a liquid silicone rubber (LSR) material.
  • LSR liquid silicone rubber
  • the first semiconducting part 420 is provided in the central part of the insulating part 410 .
  • the first semiconducting part 420 may include a rubber material, that is, a liquid silicone rubber (LSR) material, and a carbon black material.
  • LSR liquid silicone rubber
  • the first semiconducting part 420 is formed by being buried in the central part of the insulating part 410 .
  • a pair of second semiconducting parts 430 are provided at both ends of the insulating part 410 , respectively.
  • the second semiconducting part 430 may include a rubber material, that is, a liquid silicone rubber (LSR) material and a carbon black material.
  • the pair of second semiconducting parts 430 are formed by being buried in both ends of the insulating part 410 with respect to the first semiconducting part 420 .
  • the second semiconducting part 430 includes a 2-1 th semiconducting part 431 and a 2-2 th semiconducting part 432 .
  • the second-first semiconducting part 431 is provided at both ends of the insulating part 410 , respectively.
  • the 2-2nd semiconducting part 432 is connected to the 2-1th semiconducting part 431 and is disposed between the first semiconducting part 420 and the 2-1th semiconducting part 431 .
  • the plurality of sensor installation units 210 are disposed on the mounting bar 200 with a first position 200a facing the first semiconducting unit 420 and a second position 200b facing the second semiconducting unit 420 and , disposed between the first semiconducting part 420 and the second semiconducting part 430 , and respectively positioned at the third positions 200e facing the insulating part 410 .
  • the first position 200a refers to a position facing the central portion between the central portion O of the first semi-conducting portion 420 and one of both ends of the first semi-conducting portion 420 .
  • the second position 200b means a plurality of portions positioned to face the second semiconducting part 420 , and includes a 2-1 position 200c and a 2-1 position 200d.
  • the sensor installation unit 210 is located at the 2-1 position 200c and the 2-2 position 200d.
  • the 2-1 position 200c is located in the central portion of the 2-1 th semiconducting part 431 .
  • the 2-1 position 200c is a position where the interfacial pressure generated by the connection material 400 is low.
  • the 2-2nd position 200d is located at a portion where the 2-1th semiconducting part 431 and the 2-2nd semiconducting part 432 are connected.
  • the 2-2 position 200d is a position where the interface pressure generated by the connection material 400 is the highest.
  • the plurality of sensor installation parts 210 are positioned to face the insulating part 410, the first semiconducting part 420, and the second semiconducting part 430 of the connection material 400 on the mounting bar part 200.
  • the interface pressure measuring sensor module unit 300 installed in the sensor installation unit 210 may be positioned to face the insulating unit 410 , the first semiconducting unit 420 , and the second semiconducting unit 430 . Accordingly, the interface pressure measuring sensor module unit 300 may be in contact with various positions of the connecting material 400 to measure the interfacial pressure generated by the connecting material 400 .
  • the interface pressure measured at various positions of the connection member 400 through the interface pressure measurement sensor module unit 300 has a pressure value greater than or equal to the set value. That is, it can be known whether there is an electrical abnormality.
  • the interfacial pressure measuring sensor module unit 300 measures the interfacial pressure generated while the connecting material 400 is in close contact with the cable unit 100 , the mounting bar unit 200 , and the interfacial pressure measuring sensor module unit 300 .
  • the interfacial pressure measuring sensor module unit 300 measures the pressure, that is, the interfacial pressure, generated by the cable unit 100 , the mounting bar unit 200 , and the connecting material 400 in close contact with the interfacial pressure measuring sensor module unit 300 .
  • the interface pressure measured through the interface pressure measurement sensor module unit 300 has a pressure value greater than or equal to the set value, it is a normal state with no electrical abnormality.
  • the cable part 100 includes an inner cable 110 and an outer cable 120 in a circular layer structure.
  • the inner cable 110 includes a conductor portion 111 and an inner semiconducting portion 112 .
  • the conductor part 111 may be formed by twisting a plurality of conductor wires.
  • the inner semiconducting part 112 surrounds the outer surface of the conductor part 111 in a ring shape.
  • the outer cable 120 surrounds the outer surface of the inner cable 110 .
  • the external cable 120 includes an insulating member 121 and an external semiconducting part 122 , and the mounting groove 130 is formed to include at least one of the insulating member 121 and the external semiconducting part 122 .
  • the insulating member 121 surrounds the outer surface of the inner semiconducting part 112 in a ring shape.
  • the outer semiconducting part 122 surrounds the outer surface of the insulating member 121 in a ring shape.
  • the mounting groove 130 is formed in the longitudinal direction on the insulating member 121 and the external semiconducting part 122 .
  • a part of the mounting groove 130 may be formed on the insulating member 121 and the outer semiconducting part 122 , and the remaining part except for a part may be formed on the insulating member 121 .
  • a part of the connecting material 400 when the connecting material 400 is installed to be in close contact with the cable part 100 , a part of the connecting material 400 may be connected to the external semiconducting part 122 , and the remaining part may be in contact with the insulating member 121 . Thereby, the electric field can be relaxed.
  • the interfacial pressure measuring sensor module unit 300 includes an interfacial pressure measuring sensor unit 310 and a coupling unit 320 .
  • the interfacial pressure measuring sensor unit 310 includes an interfacial pressure measuring sensor 311 and a wire unit 312 .
  • the interface pressure measuring sensor 311 is disposed on the sensor installation unit 210 and measures the interface pressure generated by the connection material 400 .
  • the interfacial pressure measuring sensor 311 measures a force or a load with a load cell, and may measure an interfacial pressure generated by the connecting material 400 .
  • the wire part 312 is connected to the interface pressure measurement sensor 311 and supplies power to the interface pressure measurement sensor 311 .
  • the wire part 312 supplies power to the wire part 312 so that the interface pressure measuring sensor 311 can measure the interface pressure based on the pressure applied by the connection material 400 , that is, the electrical signal of the resistance according to the interface pressure. do.
  • the coupling part 320 is coupled to the sensor installation part 210 to fix the position of the interface pressure measuring sensor 310 . For this reason, the interface pressure measuring sensor 310 may be maintained in a position positioned on the sensor installation unit 210 .
  • the sensor installation unit 210 includes a sensor hole unit 211 , a coupling hole unit 212 , and a wire arrangement unit 213 (see FIGS. 7 and 8 ).
  • the sensor hole 211 is equipped with an interface pressure measuring sensor 311 .
  • the sensor hole part 211 includes a first sensor hole part 211a and a second sensor hole part 211b.
  • the first interfacial pressure measuring sensor 311a of the interfacial pressure measuring sensor 311 is disposed in the first sensor hole portion 211a.
  • the first sensor hole portion 211a is formed to have a size corresponding to the size of the first interface pressure measuring sensor 311a.
  • the second sensor hole portion 211b is connected to the first sensor hole portion 211a, and the second interface pressure measurement sensor 311b of the interface pressure measurement sensor 311 is disposed. At this time, the size of the second sensor hole portion 211b is smaller than the size of the first sensor hole portion 211a, and is in contact with the connection material 400 .
  • the second interface pressure measuring sensor 311b also has a size corresponding to the second sensor hole portion 211b and is smaller than the size of the first interfacial pressure measuring sensor 311a.
  • the coupling hole 212 is connected to the sensor hole 211 , and the coupling part 320 is coupled thereto.
  • a first screw thread 212a is formed in the coupling hole part 212
  • a second screw thread 321 screwed to the first screw thread 212a is formed in the coupling part 320 .
  • the coupling part 320 is formed with a second screw thread 321 to which the first screw thread 212a of the coupling hole part 212 is coupled to the outer surface by a mood bolt.
  • the coupling part 320 is provided with a tool fastening groove 322 . Through this, a tool (not shown) such as a wrench may be coupled to the tool fastening groove part 322 to easily couple the coupling part 320 to the coupling hole part 212 .
  • the interface pressure measuring sensor 311 is positioned on the sensor hole part 211 to maintain its state. That is, the interface pressure measuring sensor module unit 300 can be firmly fixed to the mounting bar 200 , and the interfacial pressure measuring sensor module unit 300 can be separated from the mounting bar 200 if necessary. .
  • the wire arrangement part 213 is connected to the sensor hole part 211 and the coupling hole part 212 , and the wire part 312 is disposed.
  • the wire arrangement part 213 has a hole shape, and includes a first wire arrangement part 213a and a second wire arrangement part 213b.
  • the first wire arrangement part 213a is connected to the sensor hole part 211 and the coupling hole part 212, and the wire part 312 is disposed.
  • the second wire arrangement part 213b is connected to the coupling hole part 212 and the first wire arrangement part 213a, and the wire part 312 is disposed.
  • the second wire arrangement portion 213b is formed to be elongated in the longitudinal direction of the mounting bar portion 200 , and is respectively connected to the first wire arrangement portion 213a and the coupling hole portion 212 .
  • the wire part 312 can be easily disposed on the mounting bar part 200 to be connected to the interface pressure measuring sensor 311 .
  • the interfacial pressure measuring device 1 of the present invention includes an attaching bar 200 that is detachably mounted to the mounting groove 130 formed in the attaching bar 200 and a detachable attachable to the attaching bar 200 . Recycling is possible even after the interface pressure is measured through the mounted interface pressure measuring sensor module unit 300 . Thereby, the cost of interfacial pressure measurement is reduced.
  • the interface pressure measuring sensor module unit 300 installed in each of the plurality of sensor installation units 210 may contact various positions of the connection material 400 to measure the interface pressure generated by the connection material 400 .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne un dispositif de mesure de pression interfaciale, qui comprend : une partie de câble comportant une partie de rainure de montage ; une partie de barre de montage montée de manière amovible sur la partie de rainure de montage ; une partie de module de capteur de mesure de pression interfaciale montée de manière amovible sur la partie de barre de montage ; et un élément de connexion disposé sur la partie de câble de manière à être en contact étroit avec la partie de câble, la partie de barre de montage et la partie de module de capteur de mesure de pression interfaciale, la partie de module de capteur de mesure de pression interfaciale mesurant la pression interfaciale qui est générée lorsque l'élément de connexion vient en contact étroit avec la partie de câble, la partie de barre de montage et la partie de module de capteur de mesure de pression interfaciale.
PCT/KR2020/009093 2020-05-08 2020-07-10 Dispositif de mesure de pression interfaciale WO2021225220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0055076 2020-05-08
KR1020200055076A KR102674133B1 (ko) 2020-05-08 계면압 측정 장치

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WO2021225220A1 true WO2021225220A1 (fr) 2021-11-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113237587A (zh) * 2021-02-02 2021-08-10 国网电力科学研究院武汉南瑞有限责任公司 一种电缆接头界面压力测量系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0564344A (ja) * 1991-09-03 1993-03-12 Hitachi Cable Ltd Ｃｖケーブル用プレハブ形接続箱の界面圧力の検出方法
KR20000017973A (ko) * 1999-12-31 2000-04-06 권문구 고무 슬리브의 파이프 용기형 계면압력 측정장치
KR100269742B1 (ko) * 1998-01-23 2000-10-16 권문구 초고압 케이블 및 접속함 계면압력 측정용 지그(jig)
JP2011141212A (ja) * 2010-01-08 2011-07-21 Viscas Corp ケーブル絶縁体とゴムブロックの界面の面圧測定方法
US20110319787A1 (en) * 2009-01-13 2011-12-29 Laboratoires Urgo Interface pressure measurement system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0564344A (ja) * 1991-09-03 1993-03-12 Hitachi Cable Ltd Ｃｖケーブル用プレハブ形接続箱の界面圧力の検出方法
KR100269742B1 (ko) * 1998-01-23 2000-10-16 권문구 초고압 케이블 및 접속함 계면압력 측정용 지그(jig)
KR20000017973A (ko) * 1999-12-31 2000-04-06 권문구 고무 슬리브의 파이프 용기형 계면압력 측정장치
US20110319787A1 (en) * 2009-01-13 2011-12-29 Laboratoires Urgo Interface pressure measurement system
JP2011141212A (ja) * 2010-01-08 2011-07-21 Viscas Corp ケーブル絶縁体とゴムブロックの界面の面圧測定方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113237587A (zh) * 2021-02-02 2021-08-10 国网电力科学研究院武汉南瑞有限责任公司 一种电缆接头界面压力测量系统

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