CN205175574U - Cable intermediate head conductor temperature measures structure - Google Patents
Cable intermediate head conductor temperature measures structure Download PDFInfo
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- CN205175574U CN205175574U CN201521019237.0U CN201521019237U CN205175574U CN 205175574 U CN205175574 U CN 205175574U CN 201521019237 U CN201521019237 U CN 201521019237U CN 205175574 U CN205175574 U CN 205175574U
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Abstract
Description
技术领域technical field
本实用新型涉及电缆接头温度监测领域，特别是涉及一种电缆中间接头导体温度测量结构。The utility model relates to the field of cable joint temperature monitoring, in particular to a conductor temperature measurement structure of a cable intermediate joint.
背景技术Background technique
目前，电缆接头(特别是高压电缆接头)存在工作状态不易检测和监测、易受地形和环境限制等问题，故电缆接头运行多年后会出现绝缘老化现象，需更换或维修电缆接头。另外，国内外大量的文献研究及电缆事故表明：电缆接头发热、绝缘品质劣化是导致电缆事故的主要原因，因此，电缆接头导体温度是电缆接头工作状态检测和监测的关键参数。At present, cable joints (especially high-voltage cable joints) have problems such as difficult detection and monitoring of working status, and are easily restricted by terrain and environment. Therefore, after many years of operation, cable joints will experience insulation aging, and cable joints need to be replaced or repaired. In addition, a large number of literature studies and cable accidents at home and abroad show that: cable joint heating and insulation quality deterioration are the main causes of cable accidents. Therefore, the cable joint conductor temperature is a key parameter for the detection and monitoring of the cable joint working state.
传统的电缆接头导体温度监测设备有红外热像仪、DTS分布式测温系统等，其中，DTS分布式测温系统是目前应用较为广泛的一种。DTS分布式测温系统是将多模传感光纤缠绕在电缆接头的表面，采用光纤分布式测温系统监测电缆接头的表面温度，再应用数学模型推导计算出电缆接头导体温度。但是，由于实际应用中会受到外界条件变化的影响、以及其自身测试精度的问题，所以，由监测到的电缆接头的表面温度推算电缆接头的导体温度存在较大误差；同时，DTS分布式测温系统表征的是一段距离(至少1m以上)的平均温度，因此，对于电缆接头导体温度的测量误差更加明显。Traditional cable joint conductor temperature monitoring equipment includes infrared thermal imaging cameras, DTS distributed temperature measurement systems, etc. Among them, the DTS distributed temperature measurement system is currently the most widely used one. The DTS distributed temperature measurement system winds the multi-mode sensing optical fiber on the surface of the cable joint, uses the optical fiber distributed temperature measurement system to monitor the surface temperature of the cable joint, and then uses the mathematical model to derive and calculate the cable joint conductor temperature. However, due to the influence of changes in external conditions and the problem of its own test accuracy in practical applications, there is a large error in estimating the conductor temperature of the cable joint from the monitored surface temperature of the cable joint; at the same time, DTS distributed measurement The temperature system characterizes the average temperature over a distance (at least 1m), therefore, the measurement error of the cable joint conductor temperature is more obvious.
针对上述缺陷，申请公布号为CN104977097A的中国发明专利申请说明书公开了一种光纤测量高压、特高压电缆接头温度的方法，包括外部测温光纤及内部测温光纤、测温探头固定夹具及温度解调仪，所述外部光纤包括依次连接的ST光纤接头、外部光纤及连接头，所述内部测温光纤包括依次连接的转接嵌件、内部光纤及测温探头，所述测温探头固定夹具通过螺钉将测温探头固定在堵头嵌件上，内部测温光纤通过转接嵌件与外部光纤连接头连接，外部光纤通过ST光纤接头与温度解调仪的光纤接口连接，实现电缆接头的工作温度的实时在线监测。其将测温探头预埋在电缆接头的内部、并直达电缆接头的热点，从而准确反应电缆接头内导体的工作温度。但是，该说明书中所公开的电缆接头为用于连接电力电缆100与终端设备200的电缆终端接头300，如图1所示，其发明内容主要体现在：在电缆终端制造时，将光纤浇注在电力电缆终端接头内，故其公开的结构不适用于连接两根城市电力电缆100时所用的电缆中间接头400；另外，其将内部测温光纤通过浇注的方式预埋在电缆接头中，这种方式在实际工程中较难实现。In response to the above defects, the Chinese invention patent application specification with the application publication number CN104977097A discloses a method for measuring the temperature of high-voltage and ultra-high-voltage cable joints with optical fibers, including external temperature-measuring optical fibers and internal temperature-measuring optical fibers, temperature-measuring probe fixing fixtures, and temperature solutions. Adjust the instrument, the external optical fiber includes ST optical fiber joints, external optical fibers and connectors connected in sequence, the internal temperature measuring optical fiber includes adapter inserts, internal optical fibers and temperature measuring probes connected in sequence, and the temperature measuring probe fixing fixture The temperature measuring probe is fixed on the plug insert by screws, the internal temperature measuring optical fiber is connected to the external optical fiber connector through the adapter insert, and the external optical fiber is connected to the optical fiber interface of the temperature demodulator through the ST optical fiber connector to realize the connection of the cable connector. Real-time online monitoring of working temperature. It pre-embeds the temperature measuring probe inside the cable joint and directly reaches the hot spot of the cable joint, so as to accurately reflect the working temperature of the conductor in the cable joint. However, the cable joint disclosed in this specification is a cable terminal joint 300 for connecting the power cable 100 and the terminal equipment 200, as shown in FIG. In the power cable terminal joint, the disclosed structure is not suitable for the cable intermediate joint 400 used when connecting two urban power cables 100; in addition, it pre-embeds the internal temperature measuring optical fiber in the cable joint by casting. This method is difficult to realize in practical engineering.
实用新型内容Utility model content
鉴于以上所述现有技术的缺点，本实用新型的目的在于提供一种易于实施、且适用于监测电缆中间接头导体温度的电缆中间接头导体温度测量结构。In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a cable intermediate joint conductor temperature measurement structure that is easy to implement and is suitable for monitoring the temperature of the cable intermediate joint conductor.
为实现上述目的，本实用新型提供一种电缆中间接头导体温度测量结构，包括光纤解调仪、传输光缆和光纤光栅温度传感器，在电缆中间接头的制作过程中，将光纤光栅温度传感器安装在电缆中间接头的内部；所述光纤光栅温度传感器用于测量电缆中间接头内电缆导体的温度，所述传输光缆的一端伸入电缆中间接头内、与光纤光栅温度传感器相连接，传输光缆的另一端与光纤解调仪相连接。In order to achieve the above purpose, the utility model provides a cable intermediate joint conductor temperature measurement structure, including optical fiber demodulator, transmission cable and optical fiber grating temperature sensor, during the production process of the cable intermediate joint, the optical fiber grating temperature sensor is installed on the cable The inside of the intermediate joint; the fiber grating temperature sensor is used to measure the temperature of the cable conductor in the cable intermediate joint, one end of the transmission optical cable extends into the cable intermediate joint and is connected with the optical fiber grating temperature sensor, and the other end of the transmission optical cable is connected to the optical fiber grating temperature sensor. Fiber optic demodulator connected.
进一步地，所述电缆中间接头包括两根电缆、压接铜管和橡胶预制件，每根电缆的端部设有接头部，所述接头部包括电缆绝缘屏蔽层、从电缆绝缘屏蔽层中露出的电缆绝缘层、以及从电缆绝缘层中露出的电缆导体，两根电缆的电缆导体分别从压接铜管的两端伸入压接铜管中、并与压接铜管固定连接，两根电缆分别从橡胶预制件的两端伸入橡胶预制件中、且电缆绝缘屏蔽层与橡胶预制件固定连接；所述压接铜管的外周面上缠绕有绕包半导电带，所述光纤光栅温度传感器固定在绕包半导电带的外周面上，所述传输光缆被固定在电缆绝缘屏蔽层与橡胶预制件之间。Further, the cable intermediate joint includes two cables, a crimped copper pipe and a rubber prefabricated part, and the end of each cable is provided with a joint part, and the joint part includes a cable insulation shielding layer and is exposed from the cable insulation shielding layer. The cable insulation layer and the cable conductors exposed from the cable insulation layer. The cable conductors of the two cables respectively extend into the crimping copper tubes from both ends of the crimping copper tubes and are fixedly connected with the crimping copper tubes. Cables extend into the rubber prefabricated part from both ends of the rubber prefabricated part respectively, and the cable insulation shielding layer is fixedly connected with the rubber prefabricated part; the outer peripheral surface of the crimped copper tube is wrapped with a wrapped semi-conductive tape, and the optical fiber grating The temperature sensor is fixed on the outer peripheral surface of the wrapped semi-conductive tape, and the transmission optical cable is fixed between the cable insulation shielding layer and the rubber prefabricated part.
优选地，所述电缆与橡胶预制件为紧配合固定。Preferably, the cable is tightly fitted and fixed to the rubber preform.
优选地，所述电缆导体与压接铜管为紧配合固定。Preferably, the cable conductor and the crimping copper pipe are tightly fitted and fixed.
进一步地，伸入橡胶预制件中的传输光缆沿电缆绝缘屏蔽层和电缆绝缘层平直敷设。Further, the transmission optical cable extending into the rubber preform is laid straight along the cable insulation shielding layer and the cable insulation layer.
如上所述，本实用新型涉及的电缆中间接头导体温度测量结构，具有以下有益效果：As mentioned above, the cable intermediate joint conductor temperature measurement structure related to the utility model has the following beneficial effects:
本申请在电缆中间接头工程施工安装时，将光纤光栅温度传感器固定在电缆中间接头的内部，用于监测电缆中间接头处电缆导体的温度，从而构成电缆中间接头导体温度测量结构，整体结构简单易于实施。In this application, during the construction and installation of the cable intermediate joint project, the fiber grating temperature sensor is fixed inside the cable intermediate joint to monitor the temperature of the cable conductor at the cable intermediate joint, thereby forming a cable intermediate joint conductor temperature measurement structure. The overall structure is simple and easy. implement.
附图说明Description of drawings
图1为现有技术中电缆输电的线路图。Fig. 1 is a circuit diagram of cable transmission in the prior art.
图2为本申请的结构示意图。Fig. 2 is a structural schematic diagram of the present application.
元件标号说明Component designation description
1电缆1 cable
11电缆绝缘屏蔽层11 Cable insulation shielding layer
12电缆绝缘层12 cable insulation
13电缆导体13 cable conductor
2压接铜管2 Crimp copper tubes
3光纤解调仪3 Optical fiber demodulator
4传输光缆4 transmission cable
5光纤光栅温度传感器5 fiber grating temperature sensor
6橡胶预制件6 rubber preforms
7绕包半导电带7 wrapped semi-conductive tape
具体实施方式detailed description
以下由特定的具体实施例说明本实用新型的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本实用新型的其他优点及功效。The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.
须知，本说明书所附图式所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本实用新型可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本实用新型所能产生的功效及所能达成的目的下，均应仍落在本实用新型所揭示的技术内容得能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本实用新型可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本实用新型可实施的范畴。It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.
本申请提供一种电缆中间接头导体温度测量结构，用于长期监测电缆1输电线路中、两根电缆1相连接的电缆中间接头处电缆导体13的温度。如图2所示，电缆中间接头包括两根待连接的电缆1、压接铜管2和橡胶预制件6，每根待连接的电缆1的端部都设有接头部，所述接头部包括电缆绝缘屏蔽层11、从电缆绝缘屏蔽层11中露出的电缆绝缘层12、以及从电缆绝缘层12中露出的电缆导体13，两根电缆1的电缆导体13分别从压接铜管2的左右两端伸入压接铜管2中、并与压接铜管2紧配合固定，从而实现两根电缆1的接头部的连接、且两根电缆1的电缆导体13之间为电导通状态。所述压接铜管2的外周面上缠绕有绕包半导电带7，所述橡胶预制件6呈圆筒状，两根电缆1分别从橡胶预制件6的两端伸入橡胶预制件6中、且电缆绝缘屏蔽层11与橡胶预制件6紧配合固定，从而实现电缆1与橡胶预制件6的固定连接。优选地，所述电缆绝缘屏蔽层11为半导电层，与电缆绝缘层12的外表面接触良好，从而可避免因电缆绝缘层12表面出现裂纹等缺陷而导致电缆绝缘屏蔽层11与金属护套之间发生局部放电现象。另外，在制作电缆中间接头时，将电缆绝缘屏蔽层11剥离掉一段，使得电缆绝缘层12从电缆绝缘屏蔽层11中露出一段，以保证有足够的绝缘距离，承受输电线路的运行电压，防止局部放电甚至击穿现象的出现。所述绕包半导电带7与橡胶预制件6内的金属层为等电位，从而可防止局部放电现象的发生。The present application provides a cable intermediate joint conductor temperature measurement structure for long-term monitoring of the temperature of the cable conductor 13 at the cable intermediate joint where two cables 1 are connected in the transmission line of the cable 1 . As shown in Figure 2, the cable intermediate joint includes two cables 1 to be connected, a crimped copper pipe 2 and a rubber prefabricated part 6, and the end of each cable 1 to be connected is provided with a joint portion, and the joint portion includes The cable insulation shielding layer 11, the cable insulation layer 12 exposed from the cable insulation shield layer 11, and the cable conductor 13 exposed from the cable insulation layer 12, the cable conductors 13 of the two cables 1 are connected from the left and right sides of the crimped copper pipe 2 respectively. The two ends extend into the crimping copper tube 2 and are tightly fitted and fixed with the crimping copper tube 2, so as to realize the connection of the joints of the two cables 1, and the cable conductors 13 of the two cables 1 are in a state of electrical conduction. The outer peripheral surface of the crimped copper tube 2 is wrapped with a wrapped semi-conductive tape 7, the rubber preform 6 is cylindrical, and two cables 1 extend into the rubber preform 6 from both ends of the rubber preform 6 respectively. Middle, and the cable insulation shielding layer 11 is closely fitted and fixed with the rubber prefabricated part 6, so as to realize the fixed connection between the cable 1 and the rubber prefabricated part 6. Preferably, the cable insulation shielding layer 11 is a semi-conductive layer, which is in good contact with the outer surface of the cable insulation layer 12, thereby avoiding the occurrence of defects such as cracks on the surface of the cable insulation layer 12 that cause the cable insulation shielding layer 11 to contact the metal sheath. Partial discharge occurs between them. In addition, when making the cable intermediate joint, a section of the cable insulation shielding layer 11 is peeled off, so that a section of the cable insulation layer 12 is exposed from the cable insulation shielding layer 11, so as to ensure a sufficient insulation distance, withstand the operating voltage of the transmission line, and prevent The appearance of partial discharge or even breakdown phenomenon. The wrapping semi-conductive belt 7 and the metal layer in the rubber preform 6 are at the same potential, thereby preventing the occurrence of partial discharge.
进一步地，所述电缆中间接头导体温度测量结构包括光纤解调仪3、传输光缆4和光纤光栅温度传感器5，所述光纤光栅温度传感器5通过胶水粘贴在绕包半导电带7的外周面上，或者在压接铜管2的外表面上缠绕绕包半导电带7的过程中，将光纤光栅温度传感器5放置在绕包半导电带7、并由绕包半导电带7包覆，从而实现光纤光栅温度传感器的固定；所述传输光缆4的一端从电缆绝缘屏蔽层11与橡胶预制件6之间穿入橡胶预制件6中、并与光纤光栅温度传感器5相连接，传输光缆4的另一端与所述光纤解调仪3相连接。由于电缆1与橡胶预制件6为紧配合固定，故将传输光缆4从电缆1的电缆绝缘屏蔽层11与橡胶预制件6之间穿过后，也就相应地被固定在电缆绝缘屏蔽层11与橡胶预制件6之间，因此无需使用额外的紧固件或固定结构来固定传输光缆4与电缆中间接头，从而简化结构、便于安装。Further, the cable intermediate joint conductor temperature measurement structure includes an optical fiber demodulator 3, a transmission optical cable 4 and a fiber grating temperature sensor 5, and the fiber grating temperature sensor 5 is pasted on the outer peripheral surface of the wrapping semiconductive tape 7 by glue , or in the process of winding the wrapping semiconductive tape 7 on the outer surface of the crimping copper tube 2, the fiber grating temperature sensor 5 is placed on the wrapping semiconductive tape 7 and covered by the wrapping semiconductive tape 7, thereby Realize the fixing of the fiber grating temperature sensor; one end of the transmission optical cable 4 penetrates in the rubber preform 6 from between the cable insulation shielding layer 11 and the rubber preform 6, and is connected with the fiber grating temperature sensor 5, and the transmission optical cable 4 The other end is connected with the optical fiber demodulator 3 . Since the cable 1 and the rubber prefabricated part 6 are tightly fitted and fixed, after the transmission optical cable 4 passes between the cable insulating shielding layer 11 of the cable 1 and the rubber prefabricated part 6, it is correspondingly fixed between the cable insulating shielding layer 11 and the rubber prefabricated part 6. Between the rubber prefabricated parts 6, there is no need to use additional fasteners or fixing structures to fix the transmission optical cable 4 and the cable intermediate joint, thereby simplifying the structure and facilitating installation.
上述电缆中间接头导体温度测量结构中，压接铜管2有以下三个作用：1、固定连接两根电缆1的电缆导体13；2、导通两根电缆1的电缆导体13，若电缆导体13的端部接触不良，但由于压接铜管2自身的导电作用，仍可保证两根电缆1的电缆导体13始终处于导通的状态，进而保证整个输电线路稳定地运行；3、导热的作用，压接铜管2的材质为铜，而铜具有良好的导热性，可将电缆导体13的发热温度准确地传递给光纤光栅温度传感器5，保证对电缆导体13温度的准确监测。电缆导体13的温度准确地传递给压接铜管2、并由光纤光栅温度传感器5感知，通过传输光缆4中的光纤将反应温度变化的光信号引出，再通过光纤解调仪3将温度信号解调，从而得到较高精度的电缆中间接头中电缆导体13温度。In the above cable intermediate joint conductor temperature measurement structure, the crimping copper tube 2 has the following three functions: 1. Fixedly connect the cable conductors 13 of the two cables 1; 2. Conduct the cable conductors 13 of the two cables 1. If the cable conductors The end of 13 is in poor contact, but due to the conductive effect of the crimped copper tube 2 itself, it can still ensure that the cable conductors 13 of the two cables 1 are always in a conductive state, thereby ensuring the stable operation of the entire transmission line; 3. Thermal conductivity Function, the crimping copper tube 2 is made of copper, and copper has good thermal conductivity, which can accurately transmit the heating temperature of the cable conductor 13 to the fiber grating temperature sensor 5, ensuring accurate monitoring of the temperature of the cable conductor 13. The temperature of the cable conductor 13 is accurately transmitted to the crimped copper tube 2 and sensed by the fiber grating temperature sensor 5. The optical signal reflecting the temperature change is drawn out through the optical fiber in the transmission cable 4, and then the temperature signal is transmitted through the optical fiber demodulator 3. demodulation, so as to obtain the temperature of the cable conductor 13 in the cable intermediate joint with higher precision.
进一步地，本申请在电缆中间接头施工安装时，将光纤光栅温度传感器5放置并固定在电缆中间接头的内部，以准确地监测电缆中间接头处电缆导体13的温度，其大大降低了外界环境因素对电缆导体13温度检测的影响，且采用光纤光栅温度传感器5作为温度检测探头，故误差非常小、检测精度非常高，从而实现了对电缆中间接头内电缆导体13温度的准确监测，为电缆中间接头工作状态的检测和监测提供有力且较为精度的数据支持，从而防止意外事故的发生。另外，采用光纤光栅温度传感器5使得测温结构还具有测试现场无需供电、抗干扰性强、使用寿命长等优点，且本申请涉及的电缆中间接头导体温度测量结构整体结构简单，其不需要将测温光纤通过浇注的方式预埋在电缆1堵头，只需要将光纤光栅温度传感器5固定在橡胶预制件6的内部，将传输光缆4平直敷设，故整个结构易于实施。Further, during the construction and installation of the cable intermediate joint, the present application places and fixes the fiber grating temperature sensor 5 inside the cable intermediate joint to accurately monitor the temperature of the cable conductor 13 at the cable intermediate joint, which greatly reduces the external environmental factors. The impact on the temperature detection of the cable conductor 13, and the fiber grating temperature sensor 5 is used as the temperature detection probe, so the error is very small and the detection accuracy is very high, thereby realizing the accurate monitoring of the temperature of the cable conductor 13 in the cable intermediate joint, which is the middle of the cable. The detection and monitoring of the working state of the joint provides powerful and relatively accurate data support, thereby preventing accidents from happening. In addition, the use of the fiber grating temperature sensor 5 makes the temperature measurement structure also have the advantages of no power supply at the test site, strong anti-interference, long service life, etc., and the overall structure of the cable intermediate joint conductor temperature measurement structure involved in the application is simple. The temperature-measuring optical fiber is pre-embedded in the plug of the cable 1 by casting, only the fiber grating temperature sensor 5 needs to be fixed inside the rubber prefabricated part 6, and the transmission optical cable 4 is laid straight, so the whole structure is easy to implement.
进一步地，当在电缆中间接头的外部固定套上橡胶预制件6后，则橡胶预制件6的内部空间非常有限，故穿入橡胶预制件6内的传输光缆4容易弯曲、且弯曲半径非常小，从而导致传输光缆4中的光纤损耗大、易折断，进而影响电缆导体13的温度检测和监测。因此，如图2所示，在敷设传输光缆4时，使伸入橡胶预制件6中的传输光缆4沿电缆绝缘屏蔽层11和电缆绝缘层12平直敷设，消除传输光缆4在橡胶预制件6内部的小弯曲半径，进而大大减少传输光缆4的光纤的损耗、且还防止断纤现象。Furthermore, when the rubber preform 6 is fixedly placed on the outside of the cable intermediate joint, the internal space of the rubber preform 6 is very limited, so the transmission optical cable 4 inserted into the rubber preform 6 is easy to bend, and the bending radius is very small , so that the optical fiber in the transmission optical cable 4 has a large loss and is easy to break, thereby affecting the temperature detection and monitoring of the cable conductor 13 . Therefore, as shown in Figure 2, when laying the transmission optical cable 4, the transmission optical cable 4 extending into the rubber prefabricated part 6 is laid straight along the cable insulation shielding layer 11 and the cable insulation layer 12, eliminating the transmission optical cable 4 in the rubber prefabricated part. 6, the small bending radius inside greatly reduces the loss of the optical fiber of the transmission optical cable 4, and also prevents fiber breakage.
上述电缆中间接头导体温度测量结构的施工步骤如下：The construction steps of the above cable intermediate joint conductor temperature measurement structure are as follows:
1、在电缆导体13的表面敷设压接铜管2，在压接铜管2的表面缠绕绕包半导电带7；1. Lay the crimping copper tube 2 on the surface of the cable conductor 13, and wrap the semi-conductive tape 7 on the surface of the crimping copper tube 2;
2、将光纤光栅温度传感器5固定在绕包半导电带7上；2. Fix the fiber grating temperature sensor 5 on the wrapping semi-conductive tape 7;
3、将传输光缆4与光纤光栅温度传感器5相连接，且传输光缆4沿电缆绝缘层12和电缆绝缘屏蔽层11的外表面平直敷设；3. Connect the transmission optical cable 4 to the fiber optic grating temperature sensor 5, and lay the transmission optical cable 4 straight along the outer surface of the cable insulation layer 12 and the cable insulation shielding layer 11;
4、安装橡胶预制件6，以固定住传输光缆4和两根电缆1；4. Install the rubber prefabricated part 6 to fix the transmission optical cable 4 and the two cables 1;
5、将传输光缆4与光纤解调仪3相连接。5. Connect the transmission optical cable 4 to the optical fiber demodulator 3.
其整体结构简单、易于实施、检测和监测效果好，非常适合广泛地推广。Its overall structure is simple, easy to implement, and has good detection and monitoring effects, and is very suitable for extensive promotion.
综上所述，本实用新型有效克服了现有技术中的种种缺点而具高度产业利用价值。To sum up, the utility model effectively overcomes various shortcomings in the prior art and has high industrial application value.
上述实施例仅例示性说明本实用新型的原理及其功效，而非用于限制本实用新型。任何熟悉此技术的人士皆可在不违背本实用新型的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本实用新型所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本实用新型的权利要求所涵盖。The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.
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Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Co-patentee after: Saikeli. Optical Cable Co., Ltd., Shanghai Patentee after: Shanghai Cable Research Institute Co., Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Co-patentee before: Saikeli. Optical Cable Co., Ltd., Shanghai Patentee before: Shanghai Cable Research Institute |
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