CN205212399U - Safe pressure release formula cross -bonding grounding test case - Google Patents
Safe pressure release formula cross -bonding grounding test case Download PDFInfo
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- CN205212399U CN205212399U CN201520920193.2U CN201520920193U CN205212399U CN 205212399 U CN205212399 U CN 205212399U CN 201520920193 U CN201520920193 U CN 201520920193U CN 205212399 U CN205212399 U CN 205212399U
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Abstract
The utility model discloses a safe pressure release formula cross -bonding grounding test case relates to power cable and ground connection circulation real -time monitoring system technical field, the power distribution box comprises a box body. Install in the box and belong to A looks cable, B looks cable, C looks cable three sheath protector altogether, the fixed terminal of sheath protector is installed on insulated supporting plate, the sheath protector is connected with the cable fixed terminal through the fillet copper bar, the cable fixed terminal passes through fillet copper bar and cable terminal cross -bonding, wherein: the intermediate junction of fillet copper bar has current transformer, ground connection circulation signal cable mouth, three cable inlet wire entry and cable outlet mouth have been offered at the lateral wall of box (1), above -mentioned three port lies in the intermediate position of lateral wall for the cable inlet wire enters the mouth, and ground connection circulation signal cable mouth and cable outlet mouth lie in the both sides of three cable inlet wire entry. Through the technical solution, the utility model has the characteristics of factor of safety is high.
Description
Technical field
The utility model relates to power cable and grounding circulation real-time monitoring system technical field, the cross interconnected formula grounding box of especially a kind of energy safety relief and Real-Time Monitoring node circulation.
Background technology
Along with the increase of urban power load, cable line construction has also in fast development.Cross connection grounding mode is mainly used in longer cable line, has advantages such as reducing metal sheath induced voltage, available protecting sheath protector and oversheath insulation.But the cross connection grounding mode inductance loop caused due to factors such as design, constructions flows through large problem and happens occasionally, and inductance loop fails to be convened for lack of a quorum and brings metal sheath circulation loss, causes electric cable heating, reduce cable life and conveying capacity.In addition, cable external insulation protective layer may be punctured instantaneously because of high pressure, causes the fault of cable metal sheath multipoint earthing to occur, has a strong impact on power cable and normally run.Due to the factor such as cable body or overvoltage cause inner arcing fault time, in case and the temperature and pressure of environmental gas sharply raises, burning huge energy discharges with explosive manner, causes very big security threat to the people of surrounding and equipment.Therefore, Real-Time Monitoring grounding box temperature, in time to grounding box pressure release in order to avoid it is very necessary for producing dangerous ensuring personal safety.
Utility model content
Blast in order to avoid cable causes gas temperature and pressure in ground connection casing suddenly to increase because factors breaks down, the utility model provides a kind of safe relief pressure type cross connection grounding test box, this novel grounded case can not only Monitoring High Voltage Cable earth current effectively in real time, ensure the normal safe work of high-tension cable, and when the pressure in grounding box is excessive, pressure release can be carried out in time, improve coefficient of safety further.
The technical scheme that the utility model is taked for its technical problem of solution is:
A kind of safe relief pressure type cross connection grounding test box, comprises casing (1); Be provided with in casing (1) and belong to A phase cable, B phase cable, C phase cable totally three sheath protectors (2); The fixed terminal of sheath protector (2) is arranged on insulation support plate (3); Sheath protector (2) is connected with cable fixed terminal (6) by fillet copper bar (4); Cable fixed terminal (6) by fillet copper bar and cable terminal (7) cross interconnected, wherein: the centre of fillet copper bar is connected with current transformer (5); Grounding circulation signal cable mouth (8), three long cable section of ingoing line entrances (9) and cable outlet mouth (10) is offered at the sidewall of casing (1); Above-mentioned three ports are the centre position that long cable section of ingoing line entrance (9) is positioned at sidewall, and grounding circulation signal cable mouth (8) and cable outlet mouth (10) are positioned at the both sides of three long cable section of ingoing line entrances (9).
Further: the cable in test box to be provided with grounding circulation supervisory control system, this grounding circulation supervisory control system comprises:
For gathering the monitoring terminal of cable grounding current signal, wherein, this monitoring terminal comprises: the first current transformer be connected with A phase cable fixed terminal; The second current transformer be connected with B phase cable fixed terminal, the 3rd current transformer be connected with C phase cable fixed terminal; Secondary side and the earth current of three current transformers gather main frame and are connected, and this earth current gathers main frame and is electrically connected with GPRSDTU module;
For receiving the server by GPRSDTU blocks current signal, this server is provided with wireless communication module;
For receiving the monitor terminal of radio communication mold Bulk transport data, this monitor terminal comprises memory, printer, display, comparator;
For providing the power supply of electric energy for monitoring terminal, described power supply is device of solar generating, and the lead-out terminal of this device of solar generating is electrically connected with the power supply terminal of monitoring terminal.
Further: casing upper end sidewall to be provided with relief valve port (11).
Compared with prior art, the beneficial effects of the utility model are:
1. because A phase cable, B phase cable, C phase cable are with cross interconnected mode ground connection, therefore can effectively reduce metal sheath induction circulation, reduce cable loss and life-span, the insulation of protection cable sheath.
2. owing to being equiped with safety valve relief hole at the sidewall of ground connection casing, therefore when the pressure in casing is excessive, can pressure release in time, ensure the normal safe work of casing internal high pressure cable.
3. due to the high-tension cable in grounding box being provided with grounding circulation supervisory control system, therefore when high-tension cable breaks down, by grounding circulation supervisory control system can Timeliness coverage current data abnormal, for follow-up fixing a breakdown provides the sufficient time.
Accompanying drawing illustrates:
Fig. 1 is the structure chart of the utility model preferred embodiment;
Fig. 2 is the circuit block diagram of the utility model preferred embodiment.
In figure: 1. casing; 2. sheath protector; 3. insulation support plate; 4. fillet copper bar; 5. current transformer; 6. cable fixed terminal; 7. cable terminal; 8. grounding circulation signal cable mouth; 9. long cable section of ingoing line mouth; 10. cable outlet mouth; 11. safety valve installing ports.
Embodiment
For utility model content of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 and Fig. 2, a kind of safe relief pressure type cross connection grounding test box, comprises casing 1; The sheath protector 2 that three belong to A phase cable, B phase cable, C phase cable is installed in casing 1; Sheath protector 2 fixed terminal is arranged on insulation support plate 3; Sheath protector 2 is connected with cable fixed terminal 6 by fillet copper bar 4; Cable fixed terminal is linked together in cross interconnected mode by fillet copper bar and cable terminal 7, is wherein connected with current transformer 5 in the middle of fillet copper bar; The lower-left port of casing 1 front surface is grounding circulation signal cable mouth 8; Casing 1 lower front surface is that centre has three ports, and these three ports are that long cable section of ingoing line mouth 9, three long cable section of ingoing line mouths 9 belong to A phase cable, B phase cable, C phase cable; Casing 1 front surface bottom right port is cable outlet mouth 10; Casing 1 upper end sidewall is provided with safety valve installing port 11; Cable in this patent is high-tension cable.
Described high-tension cable is connected with grounding circulation supervisory control system, and described grounding circulation supervisory control system comprises:
For gathering the monitoring terminal of high-tension cable earth current signal.Wherein: described monitoring terminal comprises: for gathering the current transformer of three-phase high-voltage cable earth current; Described monitoring terminal is provided with the GPRSDTU module for transmission current signal, achieves electric current real time on-line monitoring, ensure that cable running safety.
For receiving the server of the current signal transmitted by GPRSDTU module acquires, simultaneously server also by GPRS Wireless Data Transmission mode to mobile phone terminal transmitting data information, achieve real time data and upload and artificial intelligence monitors.
For the monitor terminal of storage of collected data, display data.This monitor terminal can realize real-time current data monitoring and real-time curve analysis, assessment etc., can realize the collection storage, query statistic, data-printing etc. of data, achieve multifunctional comprehensive on-line monitoring, reduce cable fault risk.
4. the power supply for powering for monitoring terminal, the preferred device of solar generating of described power supply, the lead-out terminal of this device of solar generating is electrically connected with the power supply terminal of monitoring terminal.
Further: on described safety valve installing port 11, safety relief valve to be installed.Regular pressure release can be carried out artificially like this; When not pressure release, can relief valve be closed, can prevent dust from entering in casing 1 like this; Protection internal electrical components is made moist or corrodes by dust.
Above preferred embodiment is provided with in ground connection casing 1: three sheath protectors, breakdown to prevent cable sheath from insulating; At sheath protector fixed terminal, place is provided with insulation support plate; Cable fixed terminal by fillet copper bar and cable terminal cross interconnected, be wherein connected with current transformer; Casing lower end is respectively equipped with grounding circulation signal cable mouth, three connection A phase cables, B phase cable, C phase long cable section of ingoing line long cable section of ingoing line mouth 9 and cable outlet mouths 10; Casing upper end sidewall is provided with safety valve installing port, improves cable security coefficient.
High-tension cable in grounding box is provided with grounding circulation supervisory control system, this supervisory control system comprises: 1. monitoring terminal, for gathering high-tension cable earth current signal.Wherein, the current transformer be connected with A phase cable fixed terminal is for gathering A phase cable grounding electric current, the current transformer be connected with B phase cable fixed terminal is for gathering B phase cable grounding electric current, and the current transformer be connected with C phase cable fixed terminal is for gathering C phase cable grounding electric current.Current Transformer Secondary side and earth current are gathered main frame be connected, carry out current signal transfer of data by GPRSDTU module, unmanned Real-Time Monitoring can be realized, ensure that cable running safety; 2. server, for receiving the current signal transmitted by GPRSDTU module acquires, server also by GPRS Wireless Data Transmission mode to mobile phone terminal transmitting data information, achieve real time data and upload and artificial intelligence monitors; 3. monitor terminal, for real-time current data monitoring and real-time curve analysis, assessment etc., can realize the collection storage, query statistic, data-printing etc. of data.This monitor terminal comprises memory, printer, display, comparator; Monitor terminal can by the data of collection compared with gross data, check the running status of cable, judge by the reflection directly perceived of numerical value earth current situation and the fault type of measuring place cable, achieve multifunctional comprehensive on-line monitoring, reduce cable fault risk.4. power supply, for powering for monitoring terminal, the preferred device of solar generating of described power supply, the lead-out terminal of this device of solar generating is electrically connected with the power supply terminal of monitoring terminal.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (3)
1. a safe relief pressure type cross connection grounding test box, is characterized in that: comprise casing (1); Be provided with in casing (1) and belong to A phase cable, B phase cable, C phase cable totally three sheath protectors (2); The fixed terminal of sheath protector (2) is arranged on insulation support plate (3); Sheath protector (2) is connected with cable fixed terminal (6) by fillet copper bar (4); Cable fixed terminal (6) by fillet copper bar and cable terminal (7) cross interconnected, wherein: the centre of fillet copper bar is connected with current transformer (5); Grounding circulation signal cable mouth (8), three long cable section of ingoing line entrances (9) and cable outlet mouth (10) is offered at the sidewall of casing (1); Above-mentioned three ports are the centre position that long cable section of ingoing line entrance (9) is positioned at sidewall, and grounding circulation signal cable mouth (8) and cable outlet mouth (10) are positioned at the both sides of three long cable section of ingoing line entrances (9).
2. safe relief pressure type cross connection grounding test box according to claim 1, it is characterized in that: the cable in test box is provided with grounding circulation supervisory control system, this grounding circulation supervisory control system comprises:
For gathering the monitoring terminal of cable grounding current signal, wherein, this monitoring terminal comprises: the first current transformer be connected with A phase cable fixed terminal; The second current transformer be connected with B phase cable fixed terminal, the 3rd current transformer be connected with C phase cable fixed terminal; Secondary side and the earth current of three current transformers gather main frame and are connected, and this earth current gathers main frame and is electrically connected with GPRSDTU module;
For receiving the server by GPRSDTU blocks current signal, this server is provided with wireless communication module;
For receiving the monitor terminal of radio communication mold Bulk transport data, this monitor terminal comprises memory, printer, display, comparator;
For providing the power supply of electric energy for monitoring terminal, described power supply is device of solar generating, and the lead-out terminal of this device of solar generating is electrically connected with the power supply terminal of monitoring terminal.
3. safe relief pressure type cross connection grounding test box according to claim 1 or 2, is characterized in that: casing upper end sidewall is provided with relief valve port (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520920193.2U CN205212399U (en) | 2015-11-18 | 2015-11-18 | Safe pressure release formula cross -bonding grounding test case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520920193.2U CN205212399U (en) | 2015-11-18 | 2015-11-18 | Safe pressure release formula cross -bonding grounding test case |
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| Publication Number | Publication Date |
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| CN205212399U true CN205212399U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520920193.2U Expired - Fee Related CN205212399U (en) | 2015-11-18 | 2015-11-18 | Safe pressure release formula cross -bonding grounding test case |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | A kind of cross interconnected anti-mistaking of high-tension cable connects cross interconnected case |
| CN112762989A (en) * | 2020-12-29 | 2021-05-07 | 国网重庆市电力公司璧山供电分公司 | High-voltage self-dehumidifying intelligent grounding box and monitoring system |
| CN113189390A (en) * | 2021-04-23 | 2021-07-30 | 中铁第四勘察设计院集团有限公司 | Centralized high-voltage cable sheath protection box |
-
2015
- 2015-11-18 CN CN201520920193.2U patent/CN205212399U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | A kind of cross interconnected anti-mistaking of high-tension cable connects cross interconnected case |
| CN112762989A (en) * | 2020-12-29 | 2021-05-07 | 国网重庆市电力公司璧山供电分公司 | High-voltage self-dehumidifying intelligent grounding box and monitoring system |
| CN113189390A (en) * | 2021-04-23 | 2021-07-30 | 中铁第四勘察设计院集团有限公司 | Centralized high-voltage cable sheath protection box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20161118 |