CN113253075A - Monitoring device based on optical fiber sensor cable joint - Google Patents
Monitoring device based on optical fiber sensor cable joint Download PDFInfo
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- CN113253075A CN113253075A CN202110701128.0A CN202110701128A CN113253075A CN 113253075 A CN113253075 A CN 113253075A CN 202110701128 A CN202110701128 A CN 202110701128A CN 113253075 A CN113253075 A CN 113253075A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Acoustics & Sound (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The application discloses monitoring devices based on optical fiber sensor cable joint includes: the device comprises a protective shell, an explosion-proof unit and a monitoring unit; the protective shell is provided with a first pipeline and a second pipeline, and an installation cavity is arranged inside the protective shell; the first pipeline and the second pipeline are both communicated with the installation cavity; the explosion-proof unit includes: a fire extinguishing assembly; the fire extinguishing assembly includes: the first joint, the air bag and the conical block; the first joint is provided with an open cavity; the first joint is connected with the first pipeline, and the opening cavity faces the first pipeline; the air bag is arranged in the opening cavity; the conical block is movably arranged in the first pipeline; one end of the conical block, which is close to the air bag, is a tip, and the other end of the conical block is matched with the size of the first pipeline; the monitoring unit includes: the second joint and the optical fiber sensor; the second joint includes: the connector main body and the distance adjusting plate; the joint main body is connected with the second pipeline, and a middle cavity is arranged in the middle of the joint main body; the distance adjusting plate can be movably arranged on the middle cavity; the optical fiber sensor is arranged on the distance adjusting plate and is positioned at one end, facing the installation cavity, of the distance adjusting plate.
Description
Technical Field
The application relates to the field of power equipment monitoring protection, in particular to a monitoring device based on an optical fiber sensor cable connector.
Background
In the current large-scale power supply system, power cables are increasingly used for power transmission and distribution, but faults are easy to occur in the operation process of the power cables, wherein most of the operation faults of the power cables occur at cable joints. In the long-term operation process of the cable joint, due to factors such as high-load operation, line aging and the like, in severe cases, the conditions of fire and explosion can be generated, and if corresponding protection measures are not provided, the whole underground cable can be threatened by further spreading of the fire.
Therefore, monitoring of cable joints is particularly important. In the prior art, a plurality of manual regular measurement methods exist, the manual measurement is very inconvenient due to the special cable laying or burying position, and the manual monitoring has great safety risk under the condition of unknown cable conditions; the existing device with the monitoring function installed on the cable cannot play a role in safety protection while monitoring.
Disclosure of Invention
In view of this, the present application provides a monitoring device based on an optical fiber sensor cable joint, which is used to solve the problem that the existing cable joint monitoring method cannot play a role of safety protection while monitoring.
In order to achieve the above technical object, the present application provides a monitoring device based on a fiber sensor cable joint, including: the device comprises a protective shell, an explosion-proof unit and a monitoring unit;
the protective shell is provided with a first pipeline and a second pipeline, and an installation cavity for installing a cable joint is arranged in the protective shell;
the first pipeline and the second pipeline are both communicated with the installation cavity;
the explosion-proof unit includes: a fire extinguishing assembly;
the fire extinguishing assembly includes: the first joint, the air bag and the conical block;
the first joint is provided with an open cavity;
the first joint is connected with a first pipeline in a sealing mode, and the opening cavity faces the first pipeline;
the air bag is arranged in the opening cavity and used for storing inert gas;
the taper block is arranged in the first pipeline and can move along the axial direction of the first pipeline;
one end of the conical block, which is close to the air bag, is a tip end, and the other end of the conical block is matched with the size of the first pipeline;
the monitoring unit includes: the second joint and the optical fiber sensor;
the second joint includes: the connector main body and the distance adjusting plate;
the joint main body is hermetically connected with the second pipeline, and a middle cavity is arranged in the middle of the joint main body;
the distance adjusting plate is arranged on the middle cavity and can move along the axial direction of the middle cavity;
the optical fiber sensor is arranged on the distance adjusting plate and is located at one end, facing the installation cavity, of the distance adjusting plate.
Furthermore, a channel is arranged on the wall of the middle cavity;
the groove channel is provided with a latch;
the roll adjustment plate includes: the plate body, the first elastic piece and the clamping block;
the plate body is arranged on the middle cavity, and a distance adjusting hole is arranged at a position corresponding to the channel;
the first end of the clamping block is arranged in the distance adjusting hole, and the second end of the clamping block extends into the channel to be clamped and matched with the clamping tooth;
the first elastic piece is arranged in the distance adjusting hole, and two ends of the first elastic piece are respectively connected with the hole wall of the distance adjusting hole and the fixture block and are used for providing elasticity for the fixture block;
the latch faces the direction of the mounting cavity.
Further, the channel comprises a first sub-channel and a second sub-channel which are arranged in parallel;
the first sub-channel is provided with the latch;
the second end of the fixture block extends into the first sub-channel and the second sub-channel;
a side cavity is arranged on the joint main body;
the axial direction of the side cavity is parallel to the axial direction of the channel, and the side cavity is provided with a mounting hole communicated with the second sub-channel;
the second joint further comprises: the top plate, the top block and the ejector rod;
the top plate is arranged on the second sub-channel;
the top block is arranged on the mounting hole, and the first end of the top block is abutted to the top plate;
the first end of the ejector rod extends into the side cavity and is abutted against the second end of the ejector block, and the second end of the ejector rod is positioned outside the side cavity;
the first end of ejector pin with the second end of kicking block is provided with the inclined plane that can mutually support, makes when the ejector pin is toward being close to the kicking block direction and is removed, the kicking block is to being close to the kicking block direction and remove, and then makes the fixture block receive the roof promotes toward keeping away from the latch direction removes.
Further, the second joint further comprises a second elastic piece;
the second elastic piece is arranged on the joint main body, the end part of the second elastic piece is connected with the top plate, and the second elastic piece is used for providing reset elasticity for the top plate after the top plate moves towards the direction close to the clamping block.
Further, a plurality of tooth-shaped grooves are formed in the inner wall of the first pipeline;
the taper block includes: the taper block main body, the third elastic piece and the sharp teeth;
a concave hole is formed in the conical block main body;
the sharp teeth are arranged in the concave holes, are matched with the tooth-shaped grooves in shape and are used for being clamped and matched with the tooth-shaped grooves;
the two ends of the third elastic piece are respectively connected with the sharp teeth and the hole walls of the concave holes and are used for providing elasticity for the sharp teeth;
the tip of the tooth-shaped groove is arranged downwards.
Furthermore, a through hole for communicating the installation cavity with the opening cavity is formed in the conical block.
Furthermore, a third pipeline is also arranged on the protective shell;
the third pipeline is communicated with the installation cavity;
the explosion-proof unit further includes: a pressure relief assembly;
the pressure relief assembly includes: the valve body, the valve core and the fourth elastic piece;
the valve body is provided with an air cavity, an air inlet hole and an air outlet hole which are communicated with the air cavity, and the valve body is arranged in the third pipeline;
the air inlet is communicated with the installation cavity and the air cavity;
the air outlet is communicated with the air cavity and the outside;
the fourth elastic part is arranged in the air cavity, and the first end of the fourth elastic part is connected with the cavity wall of the air cavity;
the valve core is arranged in the air cavity, is connected with the second end of the fourth elastic piece and is abutted against the air inlet hole to seal the air inlet hole 2212 under the elasticity of the second elastic piece.
Furthermore, the valve body is also provided with a guide hole;
the guide hole is communicated with the air cavity;
the second end of the valve core extends into the guide hole.
Furthermore, a conical column is arranged at the first end of the valve core;
the diameter of the head end of the conical column close to the air inlet hole is smaller than that of the air inlet hole, and the diameter of the tail end of the conical column is larger than that of the air inlet hole.
Further, the protective shell comprises an upper shell and a lower shell;
the edge of epitheca and inferior valve all is provided with the flange structure, and the two passes through flange structure lock joint each other.
It can be seen from above technical scheme that this application provides a monitoring devices based on optical fiber sensor cable joint, includes: the device comprises a protective shell, an explosion-proof unit and a monitoring unit; the protective shell is provided with a first pipeline and a second pipeline, and an installation cavity for installing a cable joint is arranged in the protective shell; the first pipeline and the second pipeline are both communicated with the installation cavity; the explosion-proof unit includes: a fire extinguishing assembly; the fire extinguishing assembly includes: the first joint, the air bag and the conical block; the first joint is provided with an open cavity; the first joint is connected with a first pipeline in a sealing mode, and the opening cavity faces the first pipeline; the air bag is arranged in the opening cavity and used for storing inert gas; the taper block is arranged in the first pipeline and can move along the axial direction of the first pipeline; one end of the conical block, which is close to the air bag, is a tip end, and the other end of the conical block is matched with the size of the first pipeline; the monitoring unit includes: the second joint and the optical fiber sensor; the second joint includes: the connector main body and the distance adjusting plate; the joint main body is hermetically connected with the second pipeline, and a middle cavity is arranged in the middle of the joint main body; the distance adjusting plate is arranged on the middle cavity and can move along the axial direction of the middle cavity; the optical fiber sensor is arranged on the distance adjusting plate and is located at one end, facing the installation cavity, of the distance adjusting plate.
By arranging the explosion-proof unit, when the cable joint explodes, the cone block moves towards the direction close to the air bag by impact to puncture the air bag, so that inert gas in the air bag is released and flows into the mounting cavity, and the load in the mounting cavity is reduced; through setting up the monitoring unit, can adjust optical fiber sensor and cable joint's distance through the roll adjustment board, and then carry out remote monitoring to cable joint's state, avoid artifical measuring trouble and risk to adopt optical fiber sensor, can in time discover these changes, prevent latent and proruption occurence of failure. Meanwhile, the optical fiber acoustic wave sensor has the advantages of high sensitivity, electromagnetic interference resistance and the like, so that signals can be monitored rapidly in real time. The personnel safety is ensured, and the problem that the existing cable joint monitoring mode cannot play a safety protection role in monitoring can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic overall structural diagram of a monitoring device based on a fiber sensor cable joint according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a fiber optic sensor cable joint based monitoring device along a second conduit according to an embodiment of the present application;
FIG. 3 is a perspective view of a second connector of a fiber sensor cable connector-based monitoring device according to an embodiment of the present disclosure;
FIG. 4 is a cross-sectional view of a fiber optic sensor cable joint based monitoring device along a first conduit according to an embodiment of the present application;
FIG. 5 is an enlarged view of a third conduit location in a cross-section of a fiber optic sensor cable joint based monitoring device along the third conduit according to an embodiment of the present application;
in the figure: 1. a protective shell; 11. a first conduit; 111. a toothed groove; 12. a second conduit; 13. a mounting cavity; 14. a third pipeline; 15. an upper shell; 16. a lower case; 2. an explosion-proof unit; 21. a fire extinguishing assembly; 211. a first joint; 2111. an open cavity; 212. an air bag; 213. a conical block; 2131. a cone block main body; 2132. a second elastic member; 2133. pointed teeth; 2134. concave holes; 2135. a through hole; 22. a pressure relief assembly; 221. a valve body; 2211. an air cavity; 2212. an air inlet; 2213. an air outlet; 2214. a guide hole; 222. a valve core; 2221. a conical column; 223. a third elastic member; 3. a monitoring unit; 31. a second joint; 311. a connector body; 3111. a middle chamber; 3112. a channel; 3112a, a first sub-channel; 3112b, a second sub-channel; 3113. clamping teeth; 3114. a trapezoidal channel; 3115. a lateral cavity; 3116. mounting holes; 3117. a second elastic member; 312. a distance adjusting plate; 313. a top plate; 314. a top block; 315. a top rod; 32. an optical fiber sensor.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses a sensor device for cable joint monitoring protection.
Referring to fig. 1 to 5, in an embodiment of the present application, a sensor device for monitoring and protecting a cable connector includes: the device comprises a protective shell 1, an explosion-proof unit 2 and a monitoring unit 3; a first pipeline 11 and a second pipeline 12 are arranged on the protective shell 1, and an installation cavity 13 for installing the cable joint 5 is arranged in the protective shell 1; the first pipeline 11 and the second pipeline 12 are communicated with the installation cavity 13.
The explosion-proof unit 2 includes: a fire extinguishing assembly 21; the fire extinguishing module 21 includes: a first joint 211, an air bag 212 and a conical block 213; the first joint 211 is provided with an open cavity 2111; the first fitting 211 is sealingly connected to the first conduit 11 with the open cavity 2111 facing the first conduit 11; an airbag 212 is disposed in the open chamber 2111 for storing an inert gas; the taper block 213 is arranged in the first pipeline 11 and can move along the axial direction of the first pipeline 11; one end of the conical block 213 close to the airbag 212 is a tip, and the other end of the conical block 213 is matched with the first pipeline 11 in size, so that the other end of the conical block 213 is attached to the first pipeline 11, and the conical block 213 is subjected to a large impact when the cable joint 5 explodes, and can immediately respond.
Specifically, the cone block 213 may be movably disposed in the first pipe 11 in various manners, for example, a limiting block may be disposed at an end of the first pipe 11, so that the cone block 213 is limited by the limiting block and cannot slide out of the first pipe 11 when no explosion occurs. Also, the first joint 211 and the first pipe 11 may be provided at end portions with flange structures, and both are connected by the flange structures.
It should be noted that the inert gas inside the airbag 212 may be carbon dioxide, which is lower in cost than other rare gases, and may protect devices inside the installation cavity 13. Also, the diameter of the open cavity 2111 may be set smaller than the other end of the cone block 213 to prevent the cone block 213 from sliding completely out of the first channel 11.
The monitoring unit 3 includes: the second connector 31 and the optical fiber sensor 32, wherein a plurality of optical fiber sensors 32 can be arranged and are connected with the signal analyzer through a line; the second joint 31 includes: a joint body 311 and a distance adjustment plate 312; the joint main body 311 is hermetically connected with the second pipeline 12, and a middle cavity 3111 is arranged in the middle; the distance adjusting plate 312 is mounted on the middle cavity 3111 and can move along the axial direction of the middle cavity 3111; the optical fiber sensor 32 is disposed on the distance-adjusting plate 312, and is located at one end of the distance-adjusting plate 312 facing the installation cavity 13, so that the distance between the optical fiber sensor 32 and the cable connector 5 inside the installation cavity 13 can be adjusted by moving the distance-adjusting plate 312 along the middle cavity 3111.
Specifically, the fault generated by the cable joint is usually an insulation fault, partial discharge often occurs before the fault, electric pulse, electromagnetic radiation, ultrasonic wave and the like can be generated in the partial discharge process, local overheating is caused, signals transmitted by the optical fiber acoustic wave sensor are all optical signals, the optical fiber acoustic wave sensor can not be influenced by an electromagnetic field and can resist high temperature and high humidity, the cable joint can be remotely monitored in a complex environment, changes can be timely found, and latent and sudden accidents are prevented. Meanwhile, the optical fiber acoustic wave sensor has the advantages of high sensitivity, electromagnetic interference resistance and the like, so that signals can be monitored rapidly in real time.
According to the scheme, the monitoring unit 3 is matched with the explosion-proof unit 2, so that the cable joint 5 can be remotely monitored in a complex environment, the trouble and risk of manual measurement are avoided, and the personnel safety is guaranteed; meanwhile, when the cable joint explodes, the fire extinguishing assembly 21 releases inert gas, so that the fire can be timely treated when the cable joint explodes, the fire can be prevented, further accidents can be prevented, the damage of the cable joint to peripheral facilities due to explosion can be reduced, and the safety of a power line can be guaranteed.
The above is the first embodiment provided in the present application, and the following is the second embodiment provided in the present application, please refer to fig. 1 to 5 specifically.
A sensor device for cable splice monitoring protection, comprising: the device comprises a protective shell 1, an explosion-proof unit 2 and a monitoring unit 3; a first pipeline 11 and a second pipeline 12 are arranged on the protective shell 1, and an installation cavity 13 for installing the cable joint 5 is arranged in the protective shell 1; the first pipeline 11 and the second pipeline 12 are communicated with the installation cavity 13. The explosion-proof unit 2 includes: a fire extinguishing assembly 21; the fire extinguishing module 21 includes: a first joint 211, an air bag 212 and a conical block 213; the first joint 211 is provided with an open cavity 2111; the first fitting 211 is sealingly connected to the first conduit 11 with the open cavity 2111 facing the first conduit 11; an airbag 212 is disposed in the open chamber 2111 for storing an inert gas; the taper block 213 is arranged in the first pipeline 11 and can move along the axial direction of the first pipeline 11; the end of the cone 213 near the balloon 212 is pointed and the other end is adapted to the size of the first conduit 11. The monitoring unit 3 includes: the second connector 31 and the optical fiber sensor 32; the second joint 31 includes: a joint body 311 and a distance adjustment plate 312; the joint main body 311 is hermetically connected with the second pipeline 12, and a middle cavity 3111 is arranged in the middle; the distance adjusting plate 312 is mounted on the middle cavity 3111 and can move along the axial direction of the middle cavity 3111; the optical fiber sensor 32 is disposed on the distance adjusting plate 312 and is located at an end of the distance adjusting plate 312 facing the mounting cavity 13.
Further, referring to fig. 2 and fig. 3, a channel 3112 is disposed on the cavity wall of the middle cavity 3111; the groove 3112 is provided with a latch 3113; the distance adjustment plate 312 includes: the plate body 3121, the first elastic member 3122 and the latch 3123; the plate body 3121 is installed on the middle cavity 3111, and a distance adjusting hole 3124 is provided at a position corresponding to the channel 3112; the first end of the clamping block 3123 is arranged in the distance adjusting hole 3124, the second end extends into the channel 3112 to be matched with the clamping tooth 3113 in a clamping way; the first elastic element 3122 is disposed in the distance adjusting hole 3124, and two ends of the first elastic element are respectively connected to the hole wall of the distance adjusting hole 3124 and the latch 3123, so as to provide elasticity for the latch 3123; the latch 3113 faces the mounting cavity 13.
Specifically, the axial direction of the middle cavity 3111 is taken as the vertical direction, the upper tooth edge of the latch 3113 can be obliquely arranged, and the lower tooth edge of the latch 3113 is horizontally arranged, so that the overall direction of the latch 3113 is the installation cavity 13, and the effect that the distance adjusting plate 312 is convenient to move towards the direction close to the installation cavity 13 can be achieved; when the distance adjusting plate 312 moves towards the direction away from the installation cavity 13, the lower teeth arranged horizontally play a role in limiting and stopping for the distance adjusting plate 312, so that the condition that the distance adjusting plate 312 drives the optical fiber sensor 32 to gradually keep away from the cable connector 5 due to the conditions of overlarge internal pressure of the installation cavity 13 and the like can be avoided.
Further, channel 3112 includes a first sub-channel 3112a and a second sub-channel 3112b arranged in parallel; a latch 3113 is arranged on the first sub-channel 3112 a; the second end of the latch 3123 extends into the first sub-channel 3112a and the second sub-channel 3112 b; the joint body 311 is provided with a side cavity 3115; the axial direction of the side cavity 3115 and the axial direction of the channel 3112 are parallel to each other, and a mounting hole 3116 communicating with the second sub-channel 3112b is formed in the side cavity 3115; the second joint 31 further includes: a top plate 313, a top block 314 and a top bar 315; the top plate 313 is disposed on the second sub-channel 3112 b; the top block 314 is mounted on the mounting hole 3116, and a first end thereof abuts against the top plate 313; the first end of the top rod 315 extends into the side cavity 3115 and abuts against the second end of the top block 314, and the second end of the top rod 315 is located outside the side cavity 3115; the first end of ejector pin 315 and the second end of kicking block 314 are provided with the inclined plane that can mutually support for when ejector pin 315 moves towards being close to kicking block 314 direction, kicking block 314 moves towards being close to roof 313 direction, and then makes fixture block 3123 receive roof 313 to promote and move towards keeping away from latch 3113 direction.
Specifically, the top rod 315 and the top block 314 form a wedge structure for changing the moving direction from a vertical direction to a horizontal direction, wherein the second end of the top rod 315 is located outside the side cavity 3115 for convenient operation; when pushing the push rod 315 to move in the vertical direction, the push rod 315 is matched with the inclined surface of the top block 314, so that the top block 314 moves in the direction approaching the top plate 313 along the horizontal direction, and then the top plate 313 pushes the fixture block 3123 to compress the first elastic member 3122 and disengage from the latch 3113, and at this time, the distance adjusting plate 312 can move in the direction away from the installation cavity 13.
It should be noted that the first sub-slot 3112a may include two sub-slots 3112b, and the width of the latch 3123 may be the same as the total width of the slot 3112.
After the adjustment is completed, the top plate 313 needs to be reset in a direction away from the latch 3123, and the resetting manner may be multiple, for example, an inclined surface for the top plate 313 to slide may be provided in the side cavity 3115, so that the top plate 313 can slide and reset along the inclined surface by gravity after losing the pushing force of the top block 314.
In this embodiment, the resetting manner is to provide the second elastic member 3117; the second elastic member 3117 is disposed on the joint body 311, and an end portion of the second elastic member 3117 is connected to the top plate 313, and is used for providing a return elastic force for the top plate 313 after the top plate 313 moves toward the latch 3123.
Specifically, the side cavity 3115 may be partially in communication with the second sub-channel 3112b for mounting the second elastic member 3117, i.e. the second elastic member 3117 has one end abutting against the cavity wall of the side cavity 3115 and the other end abutting against the top plate 313.
Further, the joint body 311 is further provided with a trapezoidal channel 3114, the second pipe 12 is provided with a trapezoidal protrusion 121, and the trapezoidal protrusion 121 and the trapezoidal channel 3114 are matched with each other, clamped and connected. Also, the joint body 311 may be provided with two or four side cavities 3115, and a corresponding number of top plates 313, channels 3112, and the like; take the connector body 311 to be provided with two side cavities 3115 as an example, the trapezoidal channel 3114 may also be provided with two, the second connector 31 may be a square frame as a whole, and the two side cavities 3115 and two are respectively provided on four end faces of the second connector 31.
Specifically, the outer end edge of the joint body 311 and the end edge of the second pipe 12 may be provided with flange structures, and the two are tightly connected through the flange structures.
Further, referring to fig. 4, a plurality of tooth-shaped grooves 111 are formed on the inner wall of the first pipe 11; the taper block 213 includes: a cone block body 2131, a third elastic piece 2132 and sharp teeth 2133; a concave hole 2134 is formed in the conical block main body 2131; the sharp teeth 2133 are arranged in the concave holes 2134, and the shapes of the sharp teeth 2133 are mutually matched with the tooth-shaped grooves 111 and are used for being clamped and matched with the tooth-shaped grooves 111; two ends of the third elastic piece 2132 are respectively connected with the sharp teeth 2133 and the hole walls of the concave holes 2134 and are used for providing elasticity for the sharp teeth 2133; the tip of the tooth-shaped groove 111 is disposed away from the air bag.
Specifically, the cone block main body 2131 is in clamping fit with the tooth-shaped groove 111 through the sharp teeth 2133, when the cone block main body 2131 is impacted by explosion, the sharp teeth 2133 are pushed to move into the concave hole 2134 along the guide of the tooth-shaped groove 111, so that the cone block main body 2131 is not limited by the sharp teeth 2133 and then moves towards the direction close to the air bag 212; when the cable connector is in a normal state, the sharp teeth 2133 are clamped and matched with the tooth-shaped groove 111, so that the conical block main body 2131 cannot slide out of the first channel 11; wherein the length of the cone block main body 2131 is less than the length of the first channel 11; the downward arrangement of the tip of the tooth-shaped groove 111 makes the cone block main body 2131 not easy to move toward the installation cavity 13, but easy to move toward the direction close to the airbag 212, which is beneficial to the cone block 213 to react quickly during explosion.
The tip of the tooth groove 111 is provided in a direction away from the airbag, and the taper block main body 2131 can be moved only in a direction away from the mounting cavity 13. The wall of the tooth-shaped groove 111 close to the mounting cavity 13 may be perpendicular to the first channel 11, so that when the first channel 11 is vertically disposed, the taper block main body 2131 is in a horizontal state.
Furthermore, the cone block 213 is provided with a through hole 2135 for communicating the mounting cavity 13 with the open cavity 2111.
Specifically, the cone block body 2131 may include a tapered portion with a tip facing the open cavity 2111 and a post portion with a bottom facing the mounting cavity 13; the through holes 2135 may be provided on both the end surface of the tapered part and the bottom surface of the pillar part, and the through holes 2135 communicate with each other. The through hole 2135 is communicated with the opening cavity 2111 and the mounting cavity 13, so that the pressure of the opening cavity 2111 and the mounting cavity 13 can be equalized when the cable joint 5 is in normal operation.
Further, referring to fig. 4, the protective shell 1 is further provided with a third pipeline 14; the third duct 14 communicates with the installation chamber 13.
The explosion-proof unit 2 further includes: a pressure relief assembly 22; the pressure relief assembly 22 includes: a valve body 221, a valve core 222 and a fourth elastic member 223; the valve body 221 is arranged in the third pipeline 14, and is provided with an air cavity 2211, and an air inlet hole 2212 and an air outlet hole 2213 which are communicated with the air cavity 2211; the air inlet 2212 is communicated with the installation cavity 13 and the air cavity 2211; the air outlet 2213 is communicated with the air cavity 2211 and the outside; the fourth elastic member 223 is disposed in the air cavity 2211, and the first end is connected to the wall of the air cavity 2211; the valve core 222 is disposed in the air cavity 2211, connected to the second end of the fourth elastic member 223, and under the elastic force of the fourth elastic member 223, the first end of the valve core 222 abuts against the air inlet hole 2212 to close the air inlet hole 2212.
Specifically, the pressure release assembly 22 is used for compressing the fourth elastic member 223 by the impact of explosion when the cable joint 5 explodes, so as to open the air inlet hole 2212, and release part of the impact capacity through the air cavity 2211, thereby reducing the burden of the protective shell 1; after the fire extinguishing component 21 releases the inert gas, the valve core 222 is pressed by the fourth elastic member 223 to close the gas inlet 2212, so as to block oxygen and prevent further combustion. And, the valve body 221 may be connected to the third passage 14 by means of a screw thread or a flange structure.
The first elastic member, the second elastic member, the third elastic member and the fourth elastic member may be high elastic rubber or a spring, and the like, without limitation.
In practical application, after the protective shell 1 is installed on the cable joint 5, rubber belts can be wound at the gaps between the two ends of the protective shell and the outside of the protective shell, so that the protective shell 1 achieves the sealing effect.
Further, the valve body 221 is further provided with a guide hole 2214; the guide hole 2214 is communicated with the air cavity 2211; the second end of the spool 222 extends into the guide bore 2214.
Specifically, the pilot hole 2214 may be used to guide the movement of the valve cartridge 222 within the air cavity 2211; wherein, the air outlet 2213 can be provided with a plurality of air outlets and is evenly distributed around the circumference of the guide hole 2214.
Further, a first end of the spool 222 is provided with a conical post 2221; the diameter of the head end of the conical column 2221 close to the air inlet hole 2212 is smaller than that of the air inlet hole 2212, and can extend into the air inlet hole 2212, and the diameter of the tail end of the conical column 2221 is larger than that of the air inlet hole 2212, so that the air inlet hole 2212 can be closed.
Further, the shield case 1 includes an upper case 15 and a lower case 16; the edges of the upper casing 15 and the lower casing 16 are provided with flange structures, and the upper casing and the lower casing are fastened with each other through the flange structures.
Specifically, the protective casing 1 may be in a form that the size is gradually reduced from the middle to both ends along the axial direction of the protective casing, the both ends are fixed on the cable, and the cable joint 5 is installed in the middle.
By adopting the optical fiber sensor 32, the cable joint 5 can be remotely monitored in a complex environment, and the distance between the optical fiber sensor 32 and the cable joint 5 is adjusted according to actual needs, so that troubles and risks of manual measurement are avoided, and the safety of personnel is guaranteed; meanwhile, the fire extinguishing assembly 21 releases inert gas, can be timely processed when the cable joint 5 is subjected to fire explosion, is flame-proof, is matched with the pressure release assembly 22 to release pressure and separate air, prevents further accidents, is favorable for reducing damage to peripheral facilities caused by explosion of the cable joint 5, and ensures the safety of a power line.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (10)
1. A monitoring device based on fiber sensor cable joint, characterized by comprising: the device comprises a protective shell, an explosion-proof unit and a monitoring unit;
the protective shell is provided with a first pipeline and a second pipeline, and an installation cavity for installing a cable joint is arranged in the protective shell;
the first pipeline and the second pipeline are both communicated with the installation cavity;
the explosion-proof unit includes: a fire extinguishing assembly;
the fire extinguishing assembly includes: the first joint, the air bag and the conical block;
the first joint is provided with an open cavity;
the first joint is connected with a first pipeline in a sealing mode, and the opening cavity faces the first pipeline;
the air bag is arranged in the opening cavity and used for storing inert gas;
the conical block can be arranged in the first pipeline in a sliding mode;
one end of the conical block, which is close to the air bag, is a tip end, and the other end of the conical block is mutually attached to the inner wall of the first pipeline;
the monitoring unit includes: the second joint and the optical fiber sensor;
the second joint includes: the connector main body and the distance adjusting plate;
the joint main body is hermetically connected with the second pipeline, and a middle cavity is arranged in the middle of the joint main body;
the distance adjusting plate can be arranged in the middle cavity in a sliding way;
the optical fiber sensor is arranged on the distance adjusting plate and is located at one end, facing the installation cavity, of the distance adjusting plate.
2. The fiber optic sensor cable splice-based monitoring device of claim 1, wherein a channel is provided on a wall of the central cavity;
the groove channel is provided with a latch;
the roll adjustment plate includes: the plate body, the first elastic piece and the clamping block;
the plate body is arranged on the middle cavity, and a distance adjusting hole is arranged at a position corresponding to the channel;
the first end of the clamping block is arranged in the distance adjusting hole, and the second end of the clamping block extends into the channel to be clamped and matched with the clamping tooth;
the first elastic piece is arranged in the distance adjusting hole, and two ends of the first elastic piece are respectively connected with the hole wall of the distance adjusting hole and the fixture block and are used for providing elasticity for the fixture block;
the latch faces the direction of the mounting cavity.
3. The fiber optic sensor cable splice-based monitoring device of claim 2, wherein the channel comprises a first subchannel and a second subchannel disposed in parallel;
the first sub-channel is provided with the latch;
the second end of the fixture block extends into the first sub-channel and the second sub-channel;
a side cavity is arranged on the joint main body;
the axial direction of the side cavity is parallel to the axial direction of the channel, and the side cavity is provided with a mounting hole communicated with the second sub-channel;
the second joint further comprises: the top plate, the top block and the ejector rod;
the top plate is arranged on the second sub-channel;
the top block is arranged on the mounting hole, and the first end of the top block is abutted to the top plate;
the first end of the ejector rod extends into the side cavity and is abutted against the second end of the ejector block, and the second end of the ejector rod is positioned outside the side cavity;
the first end of ejector pin with the second end of kicking block is provided with the inclined plane that can mutually support, makes when the ejector pin is toward being close to the kicking block direction and is removed, the kicking block is to being close to the kicking block direction and remove, and then makes the fixture block receive the roof promotes toward keeping away from the latch direction removes.
4. The fiber optic sensor cable splice-based monitoring device of claim 3, wherein the second splice further comprises a second resilient member;
the second elastic piece is arranged on the joint main body, the end part of the second elastic piece is connected with the top plate, and the second elastic piece is used for providing reset elasticity for the top plate after the top plate moves towards the direction close to the clamping block.
5. The fiber optic sensor cable joint-based monitoring device of claim 1, wherein the inner wall of the first conduit is provided with a plurality of toothed grooves;
the taper block includes: the taper block main body, the third elastic piece and the sharp teeth;
a concave hole is formed in the conical block main body;
the sharp teeth are arranged in the concave holes, are matched with the tooth-shaped grooves in shape and are used for being clamped and matched with the tooth-shaped grooves;
the two ends of the third elastic piece are respectively connected with the sharp teeth and the hole walls of the concave holes and are used for providing elasticity for the sharp teeth;
the tip of the tooth-shaped groove faces away from the air bag.
6. The optical fiber sensor cable joint-based monitoring device as claimed in claim 1, wherein the taper block is provided with a through hole for communicating the installation cavity and the opening cavity.
7. The fiber sensor cable joint-based monitoring device according to claim 1, wherein a third conduit is further disposed on the protective shell;
the third pipeline is communicated with the installation cavity;
the explosion-proof unit further includes: a pressure relief assembly;
the pressure relief assembly includes: the valve body, the valve core and the fourth elastic piece;
the valve body is provided with an air cavity, an air inlet hole and an air outlet hole which are communicated with the air cavity, and the valve body is arranged in the third pipeline;
the air inlet is communicated with the installation cavity and the air cavity;
the air outlet is communicated with the air cavity and the outside;
the fourth elastic part is arranged in the air cavity, and the first end of the fourth elastic part is connected with the cavity wall of the air cavity;
the valve core is arranged in the air cavity, is connected with the second end of the fourth elastic piece and is abutted against the air inlet hole to seal the air inlet hole under the elasticity of the second elastic piece.
8. The fiber optic sensor cable joint-based monitoring device according to claim 7, wherein the valve body is further provided with a guide hole;
the guide hole is communicated with the air cavity;
the second end of the valve core extends into the guide hole.
9. The fiber optic sensor cable joint-based monitoring device of claim 8, wherein the first end of the spool is provided with a tapered post;
the diameter of the head end of the conical column close to the air inlet hole is smaller than that of the air inlet hole, and the diameter of the tail end of the conical column is larger than that of the air inlet hole.
10. The fiber optic sensor cable splice-based monitoring device of claim 1, wherein the protective housing comprises an upper housing and a lower housing;
the edge of epitheca and inferior valve all is provided with the flange structure, and the two passes through flange structure lock joint each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110701128.0A CN113253075B (en) | 2021-06-24 | 2021-06-24 | Monitoring device based on optical fiber sensor cable joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110701128.0A CN113253075B (en) | 2021-06-24 | 2021-06-24 | Monitoring device based on optical fiber sensor cable joint |
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| CN113253075A true CN113253075A (en) | 2021-08-13 |
| CN113253075B CN113253075B (en) | 2021-09-24 |
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| CN202110701128.0A Active CN113253075B (en) | 2021-06-24 | 2021-06-24 | Monitoring device based on optical fiber sensor cable joint |
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