CN108847651B - Explosion-proof box for monitoring running state of power cable joint and accident prevention method - Google Patents
Explosion-proof box for monitoring running state of power cable joint and accident prevention method Download PDFInfo
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- CN108847651B CN108847651B CN201811063623.8A CN201811063623A CN108847651B CN 108847651 B CN108847651 B CN 108847651B CN 201811063623 A CN201811063623 A CN 201811063623A CN 108847651 B CN108847651 B CN 108847651B
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- shell
- explosion
- proof box
- joint
- monitoring
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- 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
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
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- Connection Or Junction Boxes (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses an explosion-proof box for monitoring the running state of a power cable joint and an accident prevention method, which comprise an upper shell and a lower shell, wherein the upper shell and the lower shell are surrounded to form a joint chamber, the upper shell is connected with a shell A to form an electronic control cabin, the outer side of the shell A is connected with a shell B to form a containing cavity, the containing cavity is communicated with the joint chamber, and a sensor is arranged in the containing cavity.
Description
Technical Field
The invention relates to the technical field of cable explosion-proof devices, in particular to an explosion-proof box for monitoring the running state of a power cable joint and an accident prevention method.
Background
The power cable (hereinafter referred to as cable) is widely used with the advantages of safe and reliable power supply, being beneficial to city beautification, and the like, along with the high-speed development of national economy, the popularization of power grid cabling is higher and higher, more cables are concentrated in cable trenches, cable wells or are laid side by side under the ground, and because the length of a single cable is limited, one or more connectors are usually needed on one line to lengthen the length so as to meet the power supply requirement. Urban prosperous areas, industrial dense areas, and residential areas are becoming cable dense areas. Because of the imperfect fireproof measures of the cable, potential safety hazards with different degrees exist, and in recent years, fire accidents caused by the cable occur continuously, and great challenges are brought to life of residents and safety of factories.
According to power failure analysis, the reason for causing cable fire is that the manufacturing quality of the cable intermediate joint is incomplete, the joint is not tight, the contact resistance is overlarge, and in the long-term operation process, the cable head is overheated and breaks down insulation, so that the cable trench or the buried cable is in fire. On the other hand, with urban inland inundation, various corrosive liquids such as acid, alkali, salt and the like are filled into the cable trench well to corrode the cable intermediate joint, and the cable intermediate joint is easy to break down and even explode due to the fact that the cable intermediate joint is mixed with water and gas in humid weather. And moreover, the module for realizing real-time monitoring in the prior art is connected with the sensor arranged in the explosion-proof box through the outer side electric control module arranged in the explosion-proof box, the connecting wires of the electric control module and the sensor penetrate through the wire outlets at two ends of the explosion-proof box to be connected with the sensor, and the electric control module outside the explosion-proof box is easily damaged by external liquid and water vapor external environments, so that the electric control module is invalid. And, when the cable intermediate head malfunctions or even explodes, the connecting wires and the sensors are destroyed, signal transmission is affected, and unnecessary economic losses are caused.
Disclosure of Invention
In order to solve the problems, the invention provides an explosion-proof box for monitoring the operation state of a power cable joint.
Specifically, an explosion-proof box of power cable joint running state monitoring, including last casing and lower casing, go up casing and lower casing and surround and form the joint room, go up the casing and be connected with casing A and form electronic control storehouse, casing A outside is connected with casing B and forms and hold the chamber, and holds chamber and joint room intercommunication.
The shell A is provided with a through hole for communicating the electronic control bin with the accommodating cavity, the through hole is communicated with the joint chamber, a plug is arranged in the through hole, and a wire passing hole is formed in the plug.
The plug is provided with a flange, screws are arranged on the plug in a penetrating mode, and the plug is clamped and fixed on the shell A through the flange and the plug cover.
The top of the shell A is provided with an opening, and the shell A is provided with an electronic bin cover for closing the opening.
Threads are arranged on the inner sides of two ends of the upper shell and the lower shell.
The two ends of the joint chamber formed by the upper shell and the lower shell are sealed by fireproof mud blocking.
The upper shell and the lower shell are connected through bolts.
The accident prevention method of the explosion-proof box for monitoring the operation state of the power cable joint is characterized in that a sensor for collecting the operation state of the cable intermediate joint is arranged in the explosion-proof box, when sensor data are abnormal, and potential safety hazards exist in the cable intermediate joint, maintenance personnel receive corresponding position and line information of the cable intermediate joint with the potential safety hazards, isolate and power failure is conducted on a line with the potential safety hazards according to the position and the line information, and overhaul the cable intermediate joint with the potential safety hazards.
The invention has the beneficial effects that: by designing the independent electronic control bin, the explosion-proof performance is ensured, and meanwhile, the electric control module is not damaged by external liquid and water vapor external environments. Meanwhile, the accommodating cavity for placing the sensor is designed, so that the damage of the sensor and the connecting wires is avoided when the cable intermediate connector fails or even explodes.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is an enlarged schematic view of A in FIG. 1;
FIG. 3 is a top view of the present invention;
FIG. 4 is an exploded view of the present invention;
FIG. 5 is a schematic view of a plug connector of the present invention;
In the figure, the upper shell, the lower shell, the 3-joint chamber, the 4-shell A, the 5-electronic control cabin, the 6-shell B, the 7-containing cavity, the 8-through hole, the 9-plug, the 10-flange, the 11-screw, the 12-plug cover, the 13-electronic cabin cover, the 14-fireproof mud plug, the 15-electronic cabin cover sealing ring and the 16-nut are arranged.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, 3 and 4, an explosion-proof box for monitoring the operation state of a power cable joint comprises an upper shell 1 and a lower shell 2, wherein a joint chamber 3 is formed by surrounding the upper shell 1 and the lower shell 2, and the outer parts of the upper shell 1 and the lower shell 2 are connected through bolts. The upper shell 1 is connected with a shell A4 to form an electronic control cabin 5, the outer side of the shell A4 is connected with a shell B6 to form a containing cavity 7, and the containing cavity 7 is communicated with the joint chamber 3. The electronic control bin 5 is internally provided with a central processing unit and a communication module, and the central processing unit is connected with the communication module; the electronic control cabin 5 is also provided with a battery power module which is respectively connected with the central processing unit and the communication module. The accommodating cavity 7 is internally provided with a sensor, and a lead wire of the sensor penetrates through the shell A4 to be connected with the central processing unit, so that the sensor is connected with the central processing unit. The sensor comprises: the smoke sensor, the temperature sensor, the water immersion sensor, the electric leakage and partial discharge sensor and the like are used for realizing the monitoring function of the running state of the cable, and the environments such as temperature, humidity, water immersion, smoke sensing and the like can be monitored in real time, so that the explosion-proof post-control current situation of the cable is improved to pre-control in advance, and the explosion accident of the cable is avoided from the aspect of design.
And when can not in time handle the unusual, lead to cable intermediate head trouble even when exploding, design and place the accommodation chamber 7 of sensor, avoided cable intermediate head trouble even when exploding direct impact to the sensor. The central processing unit and the communication module are placed in the electronic control cabin 5, so that the risk of damage to the electronic control cabin by the external environment is avoided.
As shown in fig. 2 and 5, the housing A4 is provided with a through hole 8 for communicating the electronic control chamber 5 with the accommodating chamber 7, and the through hole 8 communicates with the joint chamber 3, that is, the lower side surface of the through hole 8 is on the surface of the upper housing 1. Specifically, the upper housing 1 is provided with an opening to communicate the joint chamber 3, the accommodating chamber 7 and the through hole 8 with each other. A plug 9 is arranged in the through hole 8, the plug 9 is provided with a flange 10, the flange 10 is contacted with the shell A4, one end of the plug 9 away from the flange 10 is contacted with the upper shell 1, a screw 11 is penetrated on the plug 9, and the plug is connected with the upper shell 1 through the flange 10 and a plug cover 12
9 Are clamped to the housing A4, in particular by tightening the nut 16 to clamp the flange 10 and the plug cover 12. The plug 9 is provided with a wire passing hole, and a connecting wire of the central processing unit and the sensor passes through the wire passing hole. The notch is formed at the joint of the shell A4 and the upper shell 1, and then the notch is closed by the plug 9, so that the upper shell 1, the shell A4 and the shell B6 can be formed through one-time die casting, the lower shell 2 is also formed through one-time die casting, and flame-retardant and insulating polymer composite materials are adopted. The upper shell and the lower shell are in semicircular design, a concave-convex structure is realized between the upper shell and the lower shell, and sealing strips are embedded to realize the sealing performance of the product.
As shown in fig. 4, the top of the casing A4 is provided with an opening, an electronic bin cover 13 for closing the opening is arranged on the casing A4, an electronic bin cover sealing ring 15 is arranged between the casing A4 and the electronic bin cover 13, and the casing A4 is connected with the electronic bin cover 13 through threads. Threads are arranged on the inner sides of the two ends of the upper shell 1 and the lower shell 2, and fireproof blocking mud 14 is arranged at the threads to seal the two ends of the joint chamber. An insulating layer is arranged between the cable and the explosion-proof box.
During installation, a cable is placed in the lower shell 2, the screw thread of the lower shell 2 is filled with fire-proof mud 14, the upper shell 1 is closed, the upper shell 1 and the lower shell 2 are fixed through bolts, and whether the fire-proof mud is filled in place or not is checked; using a waterproof adhesive tape to wrap the explosion-proof box and the fireproof mud plug from the end of the explosion-proof box 2 by force; scanning codes by using a mobile phone APP, and inputting equipment account information such as positions, line names and the like; the telephone contacts with a background person to check whether the equipment is successfully on line; and fixing the cover plate of the control box by using screws, and finishing the installation.
The cable channel is provided with a plurality of cables, and the serial numbers of each cable are represented by 1#, 2#, N#; the cable heads of the middle cable on each cable are respectively represented by 1#001#, 1#002#, 3#OON#, 2#001#, 2#002#, 2#OON#, N#001#, N#002#, N# OON; when the traditional cable middle joint explosion-proof box is not additionally arranged, if a partial discharge fault or other faults occur in one cable middle joint, the explosion combustion can be carried out on other adjacent cables to cause great harm, and after the faults occur, emergency repair personnel can only perform power failure and replacement on all the cables in the fault area.
The explosion-proof box for monitoring the running state of the power cable joint is additionally arranged on each cable intermediate joint, the explosion-proof box is internally provided with a sensor, the running state of the cable intermediate joint can be acquired, the explosion-proof box is internally provided with a wireless communication network module, information data acquired by the sensor can be uploaded to a background server database through a cellular data network of a mobile phone, background software analyzes the information data according to the uploaded data, and codes the serial numbers, longitude and latitude coordinates of the cable intermediate joints with potential safety hazards into short messages or other network information to be sent to maintenance management staff, so that the maintenance management staff is reminded of making a power failure isolation plan of the cable with the potential hazards in advance, and maintenance and repair are stopped, and the passive situation that the fault is isolated and handled only after the cable has failed is avoided.
Claims (7)
1. The explosion-proof box for monitoring the running state of the power cable joint comprises an upper shell (1) and a lower shell (2), wherein a joint chamber (3) is formed by surrounding the upper shell (1) and the lower shell (2), and the explosion-proof box is characterized in that the upper shell (1) is connected with a shell A (4) to form an electronic control bin (5), the outer side of the shell A (4) is connected with a shell B (6) to form a containing cavity (7), and the containing cavity (7) is communicated with the joint chamber (3); the electronic control bin (5) is internally provided with a central processing unit and a communication module, and the central processing unit is connected with the communication module; the electronic control cabin (5) is also provided with a battery power module which is respectively connected with the central processing unit and the communication module; the accommodating cavity (7) is internally provided with a sensor, a wire connected with the sensor passes through the shell A (4) and is connected with the central processing unit, so that the sensor is connected with the central processing unit, and a connecting wire of the central processing unit and the sensor passes through the wire through hole; the shell A (4) is provided with a through hole (8) for communicating the electronic control bin (5) with the accommodating cavity (7), the through hole (8) is communicated with the joint chamber (3), a plug (9) is arranged in the through hole (8), and a wire passing hole is formed in the plug (9).
2. The explosion-proof box for monitoring the operation state of the power cable joint according to claim 1, wherein the plug (9) is provided with a flange (10), a screw (11) is penetrated on the plug (9), and the plug (9) is clamped and fixed on the shell A (4) through the flange (10) and the plug cover (12).
3. The explosion-proof box for monitoring the operation state of the power cable joint according to claim 1, wherein the top of the shell A (4) is provided with an opening, and an electronic bin cover (13) for closing the opening is arranged on the shell A (4).
4. The explosion-proof box for monitoring the operation state of the power cable joint according to claim 1, wherein the inner sides of the two ends of the upper shell (1) and the lower shell (2) are respectively provided with threads.
5. The explosion-proof box for monitoring the operation state of the power cable joint according to claim 1, wherein the two ends of the joint chamber (3) formed by the upper shell (1) and the lower shell (2) are sealed by fireproof blocking mud (14).
6. An explosion-proof box for monitoring the operation state of a power cable joint according to claim 1, wherein the upper shell (1) and the lower shell (2) are connected through bolts.
7. An accident prevention method based on an explosion-proof box for monitoring the operation state of a power cable joint according to any one of claims 1 to 6, wherein a sensor for collecting the operation state of a cable intermediate joint is arranged in the explosion-proof box, when sensor data are abnormal and the cable intermediate joint has a potential safety hazard, maintenance personnel receive corresponding position and line information of the cable intermediate joint with the potential safety hazard, isolate and power-off a line with the potential safety hazard according to the position and the line information, and overhaul the cable intermediate joint with the potential safety hazard.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963137 | 2018-08-22 | ||
| CN2018109631375 | 2018-08-22 |
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| Publication Number | Publication Date |
|---|---|
| CN108847651A CN108847651A (en) | 2018-11-20 |
| CN108847651B true CN108847651B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811063623.8A Active CN108847651B (en) | 2018-08-22 | 2018-09-12 | Explosion-proof box for monitoring running state of power cable joint and accident prevention method |
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| CN (1) | CN108847651B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162500A (en) * | 2020-01-10 | 2020-05-15 | 无锡德刚精工机电设备有限公司 | Intelligent aluminum alloy explosion-proof shell for cable intermediate joint |
| CN111289038A (en) * | 2020-03-04 | 2020-06-16 | 四川瑞霆电力科技有限公司 | Intelligent cable explosion-proof box online monitoring system and control method thereof |
| CN111431137B (en) * | 2020-04-20 | 2021-12-21 | 深圳供电局有限公司 | cable connector |
| CN111431136A (en) * | 2020-05-09 | 2020-07-17 | 国网上海市电力公司 | A kind of intelligent cable intermediate joint protection box |
| CN113064040A (en) * | 2021-05-18 | 2021-07-02 | 国网河南省电力公司南阳供电公司 | Coated cable joint fault early warning device and method |
| CN113253075B (en) * | 2021-06-24 | 2021-09-24 | 广东电网有限责任公司中山供电局 | A monitoring device based on optical fiber sensor cable joint |
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| KR19990030561A (en) * | 1997-10-01 | 1999-05-06 | 이종훈 | Extra-high voltage underground line linear connector for built-in voltage detector |
| RU44423U1 (en) * | 2004-11-11 | 2005-03-10 | ООО "Завод "Газпроммаш" | SEALED CABLE CONNECTION |
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| CN208596936U (en) * | 2018-08-22 | 2019-03-12 | 四川迪思源科技有限公司 | A kind of armored cassette of power cable connector monitoring running state |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5871941B2 (en) * | 2010-11-11 | 2016-03-01 | ジュージャン トゥーウェイ エレクトリシティー テクノロジー カンパニー リミテッド | Method and apparatus for accurate temperature measurement of cable joints based on RF technology |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990030561A (en) * | 1997-10-01 | 1999-05-06 | 이종훈 | Extra-high voltage underground line linear connector for built-in voltage detector |
| RU44423U1 (en) * | 2004-11-11 | 2005-03-10 | ООО "Завод "Газпроммаш" | SEALED CABLE CONNECTION |
| CN101178009A (en) * | 2007-12-05 | 2008-05-14 | 长春金鹰智谷科技集团有限公司 | Anti-knock type coal mine rescue communication and life-saving self-rescuing pipe line system |
| CN206364489U (en) * | 2016-11-30 | 2017-07-28 | 广东安诺新材料科技有限公司 | Totally-enclosed watering-type cable intermediate joint waterproof fireproofing anti-explosion safety box |
| CN208596936U (en) * | 2018-08-22 | 2019-03-12 | 四川迪思源科技有限公司 | A kind of armored cassette of power cable connector monitoring running state |
Also Published As
| Publication number | Publication date |
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| CN108847651A (en) | 2018-11-20 |
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