CN211127083U - Cable intermediate joint explosion-proof box for monitoring cable running state - Google Patents
Cable intermediate joint explosion-proof box for monitoring cable running state Download PDFInfo
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- CN211127083U CN211127083U CN202020127902.2U CN202020127902U CN211127083U CN 211127083 U CN211127083 U CN 211127083U CN 202020127902 U CN202020127902 U CN 202020127902U CN 211127083 U CN211127083 U CN 211127083U
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Abstract
The utility model discloses a cable intermediate head explosion-proof box for monitoring cable running state, the utility model realizes the monitoring of internal and external environment by adding a sensing unit and a fire extinguishing unit on the basis of the existing explosion-proof box, and provides the function of active protection, wherein the fire extinguishing unit can adopt filling aerosol, fire extinguishers and the like, for example, the fire extinguishers can be ensured to extinguish fire by communicating with a control unit and can be reliably started in time; the fire extinguisher can adopt the existing fire extinguisher capable of being electrically controlled, and the triggering mode is realized through a sensing unit and can be similar to the triggering modes of a smoke alarm and the like; the control unit realizes data fusion to the sensing units, realizes data fusion of information collected by each sensor and unified allocation of electric energy management, and accordingly reduces power consumption and prolongs service life of the device. And by deploying the explosion-proof box, a monitoring network based on explosion-proof box perception is constructed, and the running state monitoring of the power distribution network cable network is realized.
Description
Technical Field
The utility model relates to an explosion-proof box, the online monitoring of electric power system and technical field such as wireless communication technology networking communication, concretely relates to explosion-proof box of cable intermediate head for monitoring of cable running state.
Background
With the continuous acceleration of the urbanization process in China and the continuous development of power distribution networks, urban cables are very huge in laying scale, and the maintenance of the safe and stable operation of the cables also becomes an important link for ensuring the reliability of power supply. And the cable is laid underground, and need invest a large amount of manpower and materials to cable periodic inspection, and the potential safety hazard and the fault position of hardly in time discovering the cable moreover. Therefore, the on-line monitoring of the running state of the cable is carried out, the fault prevention and troubleshooting are realized, the influence range after the fault occurs is timely reduced, and the method has important significance.
On the other hand, according to the operation experience of the existing power distribution network, a large number of cable accidents with poor performance, such as cable explosion, cable fire and the like, occur at the middle joint of the cable. Therefore, the cable intermediate joint is an important node for online monitoring of the running state of the cable. At present, in order to protect a cable intermediate joint and prevent accidents from happening and further expanding, a common cable explosion-proof box gradually becomes a standard configuration in a newly-built urban distribution network, but only passive protection of the cable intermediate joint can be realized, and timely early warning and active protection of faults cannot be realized.
The utility model provides a cable intermediate head explosion-proof box for monitoring of cable running state to and this explosion-proof box's cable and performance status monitoring system's construction method. The cable intermediate joint is used as a main node for on-line monitoring, a cable running state monitoring network is constructed through the application of the Internet of things technology, and timely early warning and active defense of various cable running faults are achieved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a cable intermediate head explosion-proof box and monitoring method for monitoring the running state of a cable, which are arranged on the intermediate head of a regional distribution network cable, have multiple sensing capabilities, can realize the monitoring and protection of the running state of the regional distribution network cable through the networking communication of a wireless communication technology; in addition, except above advantage application scenario, the utility model discloses also can regard as the explosion-proof box independent operation of cable intermediate head.
A explosion-proof box of cable intermediate head for monitoring of cable running state, including casing, cable joint, sensing unit, the unit of putting out a fire and the control unit, the cable joint sets up in the casing, the sensing unit is installed the cable joint top, the unit of putting out a fire, the control unit all set up on the casing, sensing unit, the unit of putting out a fire all with the control unit communication connection.
The utility model realizes the monitoring of internal and external environment by adding a sensing unit and a fire extinguishing unit on the basis of the prior explosion-proof box, and provides the function of active protection, wherein the fire extinguishing unit can adopt filled aerosol, fire extinguishers and the like, for example, the fire extinguishers can be ensured to extinguish fire by communicating with a control unit and can be reliably started in time; the fire extinguisher can adopt the existing fire extinguisher capable of being electrically controlled, and the triggering mode is realized through a sensing unit and can be similar to the triggering modes of a smoke alarm and the like; the control unit realizes data fusion to the sensing units, realizes data fusion of information collected by each sensor and unified allocation of electric energy management, and accordingly reduces power consumption and prolongs service life of the device.
Furthermore, in order to facilitate the installation and the disassembly, the shell comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are respectively provided with a flange plate, and the upper shell and the lower shell are connected through the flange plates.
Furthermore, the sensing unit and the fire extinguishing unit are electrically connected with the control unit through data lines.
Furthermore, the control unit is provided with a photosensitive switch, a communication module and a positioning module, and the communication module comprises a wired communication module and/or a wireless communication module. The sensing unit comprises a temperature sensor, a humidity sensor, an infrared sensor, a pressure sensor, a vibration sensor and a harmful gas sensor. Realize the collection of physical quantities such as cable joint humiture, infrared, pressure, illumination in the explosion-proof box, possess wireless communication module, regularly upload and gather the physical quantity, supply monitoring platform monitoring cable network operational aspect, when detecting overheat, flooding, earth fault, send alarm signal immediately, when accidents such as conflagration, explosion, report to the police and start initiative fire extinguisher, the heat dissipation of putting out a fire prevents that the intensity of a fire from expanding.
Furthermore, a zero sequence current sensor is arranged on the inner side of the shell, and fireproof, heat-insulating and flame-retardant materials are filled in the residual space inside the shell.
Further, the fire extinguishing unit comprises a built-in fire extinguishing module and an energy leakage conduit.
Further, the built-in fire extinguishing module is arranged inside the shell, the energy leakage conduit is arranged on the surface of the shell, and the energy leakage conduit is communicated with the inside of the shell.
Furthermore, the explosion-proof box of the cable intermediate joint further comprises a temperature-sensitive switch, a water level sensor and a super capacitor, wherein the super capacitor is electrically connected with the sensing unit and the fire extinguishing unit, and is arranged in the control unit; the temperature-sensitive switches and the water level sensors are connected with the control unit, the temperature-sensitive switches are arranged on the cable connector, the temperature-sensitive switches are provided with a plurality of temperature-sensitive switches, the trigger threshold values of the temperature-sensitive switches are different, and the water level sensors are arranged on the surface of the shell.
The cable running state monitoring method based on the cable intermediate head explosion-proof box comprises a monitoring platform, a mobile terminal and a cable, and further comprises the following steps:
arranging a cable intermediate joint explosion-proof box, recording a cable number, carrying out GPS positioning and obtaining GPS positioning information after the cable intermediate joint explosion-proof box is arranged at a target position, and uploading the cable number and the GPS positioning information to a monitoring platform to uniquely correspond to or map the cable intermediate joint explosion-proof box; the cable intermediate joint explosion-proof box enters a dormant state after deployment is completed, wherein the dormant state is that the control unit controls the sensing unit to acquire sensing data at regular time and stores the data for uploading;
the abnormal state alarm is carried out, the sensing unit is provided with an acquisition threshold value, and when the sensing data acquired by the sensing unit exceeds the acquisition threshold value, an alarm signal is sent to the control unit and the fire extinguishing unit;
active protection and defense, wherein when the fire extinguishing unit receives the alarm signal, the fire extinguishing unit acts;
establishing an operation state monitoring network, accessing all deployed cable intermediate joint explosion-proof boxes into the Internet of things through a control unit, and uploading sensing data and alarm signals acquired by the cable intermediate joint explosion-proof boxes to a monitoring platform;
and the monitoring platform distributes data, and the monitoring platform sends the sensing data and the alarm signal to the mobile terminal.
The beneficial effects of the utility model are embodied in:
1. the utility model discloses based on internet of things, all kinds of sensors of key position installation in the explosion-proof box of cable intermediate head, initiative when can realizing the cable fault protect and report an emergency and ask for help or increased vigilance.
2. The utility model discloses utilize installation and cable network key node the explosion-proof box of cable intermediate head has constituted cable network running state monitoring system through internet of things networking, because explosion-proof box has become the mark of cable network safety assurance gradually and has joined in marriage the device, realizes cable on-line monitoring network through the explosion-proof box of installation cable intermediate head, the utility model discloses higher feasibility and economic nature have.
3. The utility model discloses use super capacitor drive fire extinguishing module to send down the signal as reserve power drive communication module, realized higher reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an explosion-proof box of a cable intermediate joint;
FIG. 2 is a cross-sectional view of the explosion-proof enclosure for the cable intermediate connector;
FIG. 3 is a schematic diagram of an explosion-proof box for a cable intermediate joint;
fig. 4 is a schematic view of embodiment 2 of the present invention.
In the attached drawing, 1-an upper shell, 2-a lower shell, 3-a flange plate, 4-an interface, 5-a reinforcing rib, 6-an energy leakage guide pipe, 7-a control unit, 8-an antenna, 9-a data line, 10-a sensing unit, 11-a fixing device, 12-a built-in fire extinguishing module, 13-a fireproof heat-insulating flame-retardant material, 14-a zero-sequence current sensor, 15-a sealing ring, 16-a cable and 17-a cable joint.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Example 1
As shown in fig. 1 to 3:
a explosion-proof box of cable intermediate head for cable running state monitoring, including casing, cable joint 17, sensing unit 10, the unit of putting out a fire and the control unit 7, cable joint 17 sets up in the casing, sensing unit 10 is installed cable joint 17 top, the unit of putting out a fire, control unit 7 all set up on the casing, sensing unit 10, the unit of putting out a fire all with the control unit 7 communication connection. The cable connector 17 is used for connecting a cable 16, the sensing unit 10 can be selected from the prior art such as a sensing probe, and is fixed by a fixing device 11, and the fixing device 11 can be selected from a fixing gel or a rigid structural support.
The utility model realizes the monitoring of internal and external environment by adding the sensing unit 10 and the fire extinguishing unit on the basis of the existing explosion-proof box, and provides the active protection function, wherein the fire extinguishing unit can adopt filled aerosol, fire extinguishers and the like, for example, the fire extinguishers can be ensured to extinguish fire by communicating with the control unit 7 and can be reliably started in time; the fire extinguisher can adopt the existing fire extinguisher capable of being electrically controlled, and the triggering mode is realized through the sensing unit 10 and can be similar to the triggering modes of a smoke alarm and the like; the control unit 7 realizes data fusion of the sensing units 10, and realizes unified allocation of data fusion of information acquired by each sensor and electric energy management, so that power consumption is reduced, and the service life of the device is prolonged.
In this embodiment, the surface of the housing is further provided with a reinforcing rib 5, and the front end and the rear end of the housing are provided with a port 4 and a sealing ring 15.
In this embodiment:
data fusion: the data acquisition resources of the sensors are allocated by the control unit of the explosion-proof box, and the sensors acquire data in turn and then gather the data into a uniform format through the control unit to be transmitted, so that the number of bytes of the data transmitted each time is reduced, and the communication energy consumption is maximally reduced. The information exchange between the explosion-proof box and the background adopts a short data format and a self-defined check format, so that the up-down exchange quantity of data is reduced, the connection time is shortened, and the energy consumption is reduced.
Electric energy management and distribution: the explosion-proof box control unit allocates the sensors to alternately supply power and sleep, so that the energy consumption of the idle sensors is minimized. The sensor is started, and can be started and shut down in a timing mode, a reserved startup and shutdown mode, an abnormal triggering startup and shutdown mode and other modes in a combined mode, so that energy consumption is reduced.
In order to facilitate mounting and dismounting, the shell comprises an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are both provided with a flange 3, and the upper shell 1 and the lower shell 2 are connected through the flange 3.
The sensing unit 10 and the fire extinguishing unit are electrically connected with the control unit 7 through the data line 9.
The control unit 7 is provided with a photosensitive switch, a communication module and a positioning module, and the communication module comprises a wired communication module and/or a wireless communication module. The sensing unit 10 includes a temperature sensor, a humidity sensor, an infrared sensor, a pressure sensor, a vibration sensor, and a harmful gas sensor. The harmful gas sensor is the prior art, such as a SPEC Sensors hydrogen sulfide sensor in the United states; realize the collection of physical quantities such as cable joint humiture, infrared, pressure, illumination in the explosion-proof box, possess wireless communication module, regularly upload and gather the physical quantity, supply monitoring platform monitoring cable network operational aspect, when detecting overheat, flooding, earth fault, send alarm signal immediately, when accidents such as conflagration, explosion, report to the police and start initiative fire extinguisher, the heat dissipation of putting out a fire prevents that the intensity of a fire from expanding. The wireless communication module may use existing wireless communication technology, and in this embodiment, the antenna 8 is used to enhance transmission capability.
The inner side of the shell is provided with a zero sequence current sensor 14, and the remaining space inside the shell is filled with fireproof heat-insulating flame-retardant materials 13.
The fire suppression unit includes a built-in fire suppression module 12 and a discharge conduit 6.
The built-in fire extinguishing module 12 is arranged inside the shell, the energy leakage conduit 6 is arranged on the surface of the shell, and the energy leakage conduit 6 is communicated with the inside of the shell.
In this embodiment:
the explosion-proof box of the cable intermediate joint further comprises a temperature-sensitive switch, a water level sensor and a super capacitor, wherein the super capacitor is electrically connected with the sensing unit 10 and the fire extinguishing unit, and is arranged in the control unit 7; the temperature-sensitive switches and the water level sensors are connected with the control unit 7, the temperature-sensitive switches are arranged on the cable joints 17, the temperature-sensitive switches are provided with a plurality of temperature-sensitive switches, the trigger threshold values of the temperature-sensitive switches are different, and the water level sensors are arranged on the surface of the shell.
The temperature sensors are arranged at the cable joints and distributed in a straight line along the cable joints, and each sensor is used for measuring the temperature and calculating the average value for monitoring the average temperature of the cable joints.
The infrared sensor is installed in the convenient box shell and is close to the cable joint for monitoring local overheating of the cable joint, the explosion-proof box control unit collects information according to the infrared sensor and combines a temperature threshold value sent by the monitoring platform to judge whether the local overheating exists, and if the local overheating exists, the fire extinguishing module is immediately alarmed and started.
A pressure sensor: the pressure sensor is arranged near a pressure relief hole on the inner side of the explosion-proof box shell and used for monitoring the internal pressure of the explosion-proof box and detecting rapid temperature rise or explosion.
Vibration sensor: the pair of vibration sensors are symmetrically arranged in the explosion-proof box shell, and can offset part of external vibration signal interference by subtracting signal difference for testing cable vibration caused by electric power.
A zero-sequence current sensor: the annular sensor is arranged around the cable for measuring zero sequence current caused by earth fault or three-phase load unbalance in the cable.
A water level sensor: and the water level sensor is arranged outside the explosion-proof box and used for detecting the water level condition outside the explosion-proof box. The water level sensor can also be used as a debugging start key, the water level sensor is touched for 3 times in a quick and continuous mode, and the control unit of the explosion-proof box starts a debugging state.
A built-in fire extinguishing module: the fire extinguishing device is arranged inside the explosion-proof box, and is filled with aerosol, and the temperature sensor or the explosion-proof box control unit can be triggered independently to extinguish fire when a fire disaster or explosion occurs, so that the accident influence range is reduced. The driving current of the fire extinguisher is provided by the super capacitor, so that the fire extinguishment can be timely and reliably started.
Energy leakage conduit: the impact on the internal elements during explosion is reduced.
A photosensitive switch: the explosion-proof box is installed outside the shell, the power supply is switched on when the detection well cover is opened or the light source is illuminated, the trigger signal is sent to the explosion-proof box control unit, and the alarm signal is sent to the rear end monitoring platform by the explosion-proof box control unit for anti-theft alarm.
A temperature-sensitive switch: install in cable joint department, directly switch on when cable joint temperature is higher than the threshold value of putting out a fire, through super capacitor drive fire extinguishing module, have the highest priority. In the embodiment, the number of the temperature-sensitive switches is 3, the triggering threshold values are respectively 60 ℃, 90 ℃ and 120 ℃, when the temperature is higher than 60 ℃, the temperature-sensitive switches with the triggering temperature of 60 ℃ are switched on, the control unit is triggered to start, the monitoring quantities of all the states are uploaded to the background, the triggering time of 60 ℃ is recorded, and the control unit enters the dormant state again; when the temperature is higher than 90 ℃, triggering a temperature-sensitive switch with the temperature of 90 ℃ to be conducted, triggering a control unit to be started, calculating the time difference between the current time and the recorded 60 ℃ triggering time, if the time difference is more than 1 minute and the 120 ℃ switch is not triggered, uploading each state monitoring quantity to a background, enabling the control unit to enter a dormant state again, and if the time difference is less than 1 minute, immediately starting to extinguish a fire; the temperature sensitive switch with the trigger temperature of 120 ℃ is directly connected to the fire extinguishing unit control loop, and when the temperature is higher than 120 ℃, the temperature sensitive switch is directly conducted to start fire extinguishing.
Possess super capacitor electric quantity monitoring function, send alarm signal to the back end when super capacitor electric quantity is too low.
The power failure warning function is provided, and at the moment of power failure of the control unit of the explosion-proof box, the electric quantity of the super capacitor is utilized to send a power failure warning signal to the background through the communication module.
The cable running state monitoring method based on the cable intermediate head explosion-proof box comprises a monitoring platform, a mobile terminal and a cable, and further comprises the following steps:
arranging a cable intermediate joint explosion-proof box, recording a cable number, carrying out GPS positioning and obtaining GPS positioning information after the cable intermediate joint explosion-proof box is arranged at a target position, and uploading the cable number and the GPS positioning information to a monitoring platform to uniquely correspond to or map the cable intermediate joint explosion-proof box; the explosion-proof box of the cable intermediate joint enters a dormant state after deployment is finished, the dormant state is that the control unit 7 controls the sensing unit 10 to collect sensing data at regular time, and stores the data for uploading;
an abnormal state alarm, wherein the sensing unit 10 is provided with an acquisition threshold value, and when sensing data acquired by the sensing unit 10 exceeds the acquisition threshold value, an alarm signal is sent to the control unit 7 and the fire extinguishing unit;
active protection and defense, wherein when the fire extinguishing unit receives the alarm signal, the fire extinguishing unit acts;
establishing an operation state monitoring network, accessing all deployed cable intermediate joint explosion-proof boxes into the Internet of things through a control unit 7, and uploading sensing data and alarm signals acquired by the cable intermediate joint explosion-proof boxes to a monitoring platform;
and the monitoring platform distributes data, and the monitoring platform sends the sensing data and the alarm signal to the mobile terminal.
Example 2
As shown in fig. 4:
1. the explosion-proof box of the cable intermediate head is deployed, active positioning information is transmitted to the equipment and the monitoring platform by personnel during installation, the explosion-proof box is corrected and positioned, the ID of the explosion-proof box corresponds to the installation position, and the ID is verified by inspection personnel at the later stage.
2. The cable operation state monitoring network is established through wireless communication technologies of the Internet of things (NB-iot, L ora) and the like, as shown in FIG. 3.
3. The sensor in the explosion-proof box is in a dormant state under normal conditions until the explosion-proof box control unit is awakened. The explosion-proof boxes wake up the sensors in turn and collect environmental data at regular time (for example, sampling interval of temperature sensors is 1 hour, sampling interval of infrared sensors is 1 hour, sampling interval of pressure sensors is 1 hour, sampling interval of vibration sensors is 4 hours, sampling interval of zero sequence current sensors is 1 hour, sampling interval of water level sensors is 2 hours), the collected data are uniformly packed and sent to a data cloud end by the explosion-proof boxes according to the principle of minimum bytes after the collected data are completed, the background monitoring platform regularly applies for the collected data of each explosion-proof box to the data cloud end one by one according to an ID list of the explosion-proof boxes, if the collected data fail, the explosion-proof boxes with data acquisition failure are marked as communication abnormal explosion-proof boxes, the failure data packets are applied for acquisition again at the next communication moment, and if the acquisition fails for multiple times (for example.
4. If the explosion-proof box directly triggers the temperature sensitive switch to put out a fire if a fire disaster happens, simultaneously trigger the explosion-proof box control unit to alarm by fire, the explosion-proof box control unit interrupts all processes, send the alarm signal with fire identification and explosion-proof box ID to the data cloud end in the top priority, the data cloud end detects the fire identification, preferentially send this alarm signal to the monitoring platform propelling movement, after the monitoring platform receives this alarm signal, with the suggestion of highest priority to monitoring personnel, show the fire scope on regional cable distribution diagram, and the prediction is probably swept the region, send immediately to maintainer cell-phone APP and report an emergency and ask for help or increased vigilance.
5. If the photosensitive switch of the explosion-proof box is triggered to alarm, then send with the second priority and bring into the warning signal of invading sign and explosion-proof box ID to the data high in the clouds, the data high in the clouds detects the invasion sign, with the second priority to this warning signal of monitoring platform propelling movement, after monitoring platform received this warning signal, with the second priority to the suggestion of monitoring personnel, and send immediately to maintainer cell-phone APP and report an emergency and ask for help or increased vigilance.
6. The monitoring personnel set the alarm threshold value of temperature, pressure, vibration, water level data collection according to local electric wire netting operation actual conditions, obtain above data and find out surpass set threshold value back at monitoring platform, send out the out-of-limit at monitoring platform to monitoring personnel and to maintainer cell-phone end APP and report an emergency and ask for help or increased vigilance, remind the focus to pay close attention to. Set up the threshold value of putting out a fire of temperature, pressure, when exceeding this threshold value, send the instruction to the explosion-proof box that transfinites through the data high in the clouds immediately, trigger the module of putting out a fire and put out a fire.
7. And the monitoring platform judges whether abnormal values exist in the cable joints in the same cable well and the cable joints in the adjacent cable wells through a statistical method and an algorithm (for example, according to the Grabbs criterion) according to the received explosion-proof box position data, the temperature data, the pressure data and the water level data. If the monitoring platform exists, sending a temperature abnormity alarm corresponding to the ID of the explosion-proof box to monitoring personnel and a mobile phone end APP of maintenance personnel on the monitoring platform.
8. The monitoring platform calculates and judges whether a three-phase load imbalance or a single-phase earth fault exists in the cable to which the explosion-proof box belongs according to the magnitude of the received zero-sequence current of each explosion-proof box and a zero-sequence current alarm threshold value set by each cable in combination with historical data (for example, if the zero-sequence current of the cable with smaller zero-sequence current is abnormally increased at the latest data acquisition moments, the cable is judged to be the earth fault), and if the cable is judged to be the single-phase earth fault, the position of a fault point is judged according to the data of the zero-sequence current sensors of the explosion-proof boxes of different cable wells (for example, the fault point is positioned between the explosion-proof boxes of IDx and IDy).
9. The monitoring platform displays temperature, water level, pressure and vibration early warning areas on the regional cable distribution map according to the collected environmental data and alarm data, and relates to an explosion-proof box, and the explosion-proof box is brought into a key maintenance plan and pushed to a mobile phone APP of a maintenance worker.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (9)
1. A explosion-proof box of cable intermediate head for monitoring of cable running state, its characterized in that: including casing, cable joint (17), sensing unit (10), the unit of putting out a fire and the control unit (7), cable joint (17) set up in the casing, sensing unit (10) are installed cable joint (17) top, the unit of putting out a fire, control unit (7) all set up on the casing, sensing unit (10), the unit of putting out a fire all with control unit (7) communication connection.
2. The explosion-proof box of cable intermediate joints for monitoring the operating condition of cables as claimed in claim 1, wherein the housing comprises an upper housing (1) and a lower housing (2), flanges (3) are arranged on the upper housing (1) and the lower housing (2), and the upper housing (1) and the lower housing (2) are connected through the flanges (3).
3. The cable intermediate joint explosion-proof box for monitoring the cable running state according to claim 1, wherein the sensing unit (10) and the fire extinguishing unit are electrically connected with the control unit (7) through a data line (9).
4. The cable intermediate joint explosion-proof box for cable operation state monitoring according to claim 1, wherein the sensing unit (10) comprises a temperature sensor, a humidity sensor, an infrared sensor, a pressure sensor, a vibration sensor and a harmful gas sensor.
5. The cable intermediate joint explosion-proof box for monitoring the cable running state according to claim 1, characterized in that a zero sequence current sensor (14) is arranged inside the shell, and the residual space inside the shell is filled with a fireproof, heat-insulating and flame-retardant material (13).
6. The explosion-proof box of cable intermediate joints for monitoring the operating condition of cables as claimed in claim 1, characterized in that the control unit (7) is provided with a photosensitive switch, a communication module and a positioning module, wherein the communication module comprises a wired communication module and/or a wireless communication module.
7. The cable intermediate joint explosion-proof box for cable operation state monitoring according to claim 1, characterized in that the fire extinguishing unit comprises a built-in fire extinguishing module (12) and a energy discharge conduit (6).
8. The cable intermediate joint explosion-proof box for cable operation state monitoring according to claim 7, wherein the built-in fire extinguishing module (12) is arranged inside the housing, the energy leakage conduit (6) is arranged on the surface of the housing, and the energy leakage conduit (6) is communicated with the inside of the housing.
9. The cable intermediate joint explosion-proof box for monitoring the running state of a cable according to claim 1, further comprising a temperature-sensitive switch, a water level sensor and a super capacitor, wherein the super capacitor is electrically connected with the sensing unit (10) and the fire extinguishing unit, and is arranged in the control unit (7); the temperature-sensitive switches and the water level sensors are connected with the control unit (7), the temperature-sensitive switches are arranged on the cable joints (17), the temperature-sensitive switches are provided with a plurality of temperature-sensitive switches, the trigger threshold values of the temperature-sensitive switches are different, and the water level sensors are arranged on the surface of the shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020127902.2U CN211127083U (en) | 2020-01-20 | 2020-01-20 | Cable intermediate joint explosion-proof box for monitoring cable running state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020127902.2U CN211127083U (en) | 2020-01-20 | 2020-01-20 | Cable intermediate joint explosion-proof box for monitoring cable running state |
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| CN211127083U true CN211127083U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363929A (en) * | 2021-05-21 | 2021-09-07 | 广州番禺电缆集团有限公司 | Linkage explosion-proof control method and device for cable joint explosion-proof isolation equipment |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363929A (en) * | 2021-05-21 | 2021-09-07 | 广州番禺电缆集团有限公司 | Linkage explosion-proof control method and device for cable joint explosion-proof isolation equipment |
| CN113363929B (en) * | 2021-05-21 | 2022-04-19 | 广州番禺电缆集团有限公司 | Linkage explosion-proof control method and device for cable joint explosion-proof isolation equipment |
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