CN201348810Y - Wire and cable terminal overheating monitoring device - Google Patents
Wire and cable terminal overheating monitoring device Download PDFInfo
- Publication number
- CN201348810Y CN201348810Y CNU2008202064578U CN200820206457U CN201348810Y CN 201348810 Y CN201348810 Y CN 201348810Y CN U2008202064578 U CNU2008202064578 U CN U2008202064578U CN 200820206457 U CN200820206457 U CN 200820206457U CN 201348810 Y CN201348810 Y CN 201348810Y
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- monitoring device
- wire
- detector
- residual current
- current sensor
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Abstract
The utility model provides a wire and cable terminal overheating monitoring device, which is characterized in that the wire and cable terminal overheating monitoring device is formed by sequentially connecting an electric fire hazard monitoring center (1), an electric fire hazard monitoring device (2) and a monitoring detector. The monitoring detector comprises a detector (3-1), a residual current sensor (3-3) and temperature sensors (3-2), the temperature sensors (3-2) are respectively arranged on a wire inlet end and a wire outlet end of a circuit breaker (4), the residual current sensor (3-3) is connected to the wire outlet end of the circuit breaker, and the temperature sensors (3-2) and the residual current sensor (3-3) are connected with the electric fire hazard monitoring device (2) through the detector (3-1). The wire and cable terminal overheating monitoring device can accurately transmits temperature information of two ends of the terminal to the electric fire hazard monitoring device via the detector, thereby bringing convenience for the monitoring device to process. Simultaneously, because the temperature sensors and the residual current sensor are relatively smaller in volume, the temperature sensors and the residual current sensor can be mounted on the wire inlet end and the wire outlet end of the terminal stud. Further, the wire and cable terminal overheating monitoring device is cheap in price, and can be widely used in the connection monitoring field.
Description
Technical field
The utility model relates to the overheated monitoring device of a kind of electric wire terminal stud, belongs to the electrical monitoring field.
Background technology
The electric power system fault point is mainly in the connection terminal place, because cable accessory kind, form, specification are more, quality is uneven, and workmen's technical merit height does not wait, the cable splice method of operation and condition are different, and the reason that causes the electric wire joint to break down has nothing in common with each other.With at present hydraulic engineering and electric system utilization very widely cross-linked power cable be example, it mainly is the connection that conductor goes out at connection terminal that the crosslinked cable joint breaks down.Crosslinked cable allows the running temperature height, and the contact resistance of terminal stud is excessive, temperature rise is accelerated, heating impels the oxide film of joint to thicken greater than heat radiation, makes contact resistance bigger again, and temperature rise is faster.So the vicious cycle meeting destroys the insulation course of joint, forms phase fault, sets off an explosion and burns.
In the prior art, mainly be to adopt infra-red thermal imaging instrument butted line termination to carry out temperature survey to the overheated monitoring of electric wire terminal stud, and with data transfer to its data processing storehouse.Though infra-red thermal imaging instrument can satisfy the requirement of overheated monitoring to a certain extent, also there is shortcoming in it: (1) infra-red thermal imaging instrument volume is bigger, is not suitable for being arranged on electric wire terminal stud place; (2) price of this infra-red thermal imaging instrument is higher, uses a plurality of infra-red thermal imaging instruments can increase device in device cost; (3) be subjected to infrared ray to carry out the thermal sensing amount temperature owing to infra-red thermal imaging instrument is abutted against, thereby exist temperature contrast, the accuracy of measurement is not high.
The utility model content
The purpose of this utility model is, and is big in order to overcome the volume that the overheated monitoring device of existing electric wire terminal stud exists, the cost height, and the shortcoming that accuracy is low provides a kind of electric wire terminal stud overheated monitoring device.
The purpose of this utility model reaches by taking following technical scheme:
The overheated monitoring device of electric wire terminal stud, constitute by electric fire disaster monitoring center, electric fire disaster monitoring equipment and monitoring detector are continuous successively, described monitoring detector comprises detector, residual current sensor and temperature sensor, temperature sensor is separately positioned on the end of incoming cables and the leading-out terminal of isolating switch, the residual current sensor is connected on the leading-out terminal of isolating switch, and temperature sensor links to each other with electric fire disaster monitoring equipment by detector with the residual current sensor.
The purpose of this utility model can also reach by taking following technical scheme:
The utility model is further improved: described temperature sensor can constitute by the box-like sensor of thermocouple.
Compared with prior art, the utlity model has following advantage:
The utility model adopts a plurality of temperature sensors and residual current sensor to place the end of incoming cables and the leading-out terminal of terminal stud, the temperature information at terminal stud two ends can be delivered to electric fire disaster monitoring equipment through detector exactly, makes things convenient for watch-dog to handle it.Simultaneously,, can be installed in the end of incoming cables and the leading-out terminal of terminal stud because the volume of temperature sensor and residual current sensor is all less, and its low price, can be widely used in wiring monitoring field.
Description of drawings
Fig. 1 is a device connection diagram of the present utility model.
Fig. 2 is the connection layout that inlet wire of the present utility model and outlet are the cable connection termination.
Fig. 3 is that of the present utility model busbar, inlet wire and each outlet are arranged is the connection layout of cable connection termination.
Embodiment
As shown in Figure 1, the overheated monitoring device of electric wire terminal stud of the present utility model, constitute by electric fire disaster monitoring center 1, electric fire disaster monitoring equipment 2 and monitoring detector are continuous successively, described monitoring detector comprises detector 3-1, residual current sensor 3-3 and temperature sensor 3-2, temperature sensor 3-2 is separately positioned on the end of incoming cables and the leading-out terminal of isolating switch 4, residual current sensor 3-3 is connected on the leading-out terminal of isolating switch, and temperature sensor 3-2 links to each other with electric fire disaster monitoring equipment 2 by detector 3-1 with residual current sensor 3-3.
On the basis of the above, temperature sensor of the present utility model is the box-like sensor of thermocouple, and the rated temperature range of temperature sensor work is-40 ℃～300 ℃, accuracy of detection ± 1～2%.Coupling air clear distance: during 10KV 〉=125mm, during 35KV 〉=300mm, if adopt compound inslation, can reduce the air clear distance by relevant criterion.
The course of work of the present utility model is as follows: when the device operation, temperature sensor is delivered to detector with the end of incoming cables of terminal stud and the temperature information of leading-out terminal by data line, the residual current sensor is delivered to detector with detected current information through data line, and detector will be delivered to the electric fire disaster monitoring center through electric fire disaster monitoring equipment for information about.When temperature rise reached preset value, detector was sent electric signal to watch-dog and electric fire disaster monitoring center, realized that onsite alarming and control center's unified monitoring combine.
As shown in Figure 2, a kind of allocation plan of this device is applicable to that panel box inlet wire and outlet are the situation of cable connection termination: end of incoming cables and leading-out terminal at terminal stud all are provided with a temperature sensor, be connected to a residual current sensor at leading-out terminal, temperature sensor all is connected with detector by data line with the residual current sensor.
As shown in Figure 3, a kind of allocation plan of this device is applicable to that panel box has busbar, inlet wire and each distribution right to higher competition echo and are the situation of cable connection termination: the end of incoming cables that a temperature sensor is arranged on the electrical distribution box bus bar end, a plurality of temperature sensors are arranged at the leading-out terminal of each panel box, and the leading-out terminal at each panel box all is connected to a residual current sensor, and temperature sensor all is connected with detector by data line with the residual current sensor.
At present, the termination operation of high-quality electric wire can adapt to the cable accessory of employed environment and condition by advanced technology, technical maturity, reliable in quality, and the construction and installation that compounding technique is always or usually as specified, technology is skilled are finished.The device for detecting temperature of electric wire terminal stud should match with corresponding cable accessory; according to actual user demand; at component construction; electrical specification; the construction technology each side cooperates improvement; can make circuit temperature rise and overheated monitoring; leakage current detects; the electric wire joint protective is realized its function better; as much as possible circuit terminal stud break down and the situation of overheating under cause and report to the police; the leakage current monitoring of combined circuit; for electric maintainer provides more early stage; comprehensively the monitoring judging means reaches the target of fixing a breakdown rapidly and reducing the generation of electrical fire effectively.
Claims (2)
1, the overheated monitoring device of electric wire terminal stud, it is characterized in that: by electric fire disaster monitoring center (1), electric fire disaster monitoring equipment (2) and monitoring detector link to each other successively and constitute, described monitoring detector comprises detector (3-1), residual current sensor (3-3) and temperature sensor (3-2), temperature sensor (3-2) is separately positioned on the end of incoming cables and the leading-out terminal of isolating switch (4), residual current sensor (3-3) is connected on the leading-out terminal of isolating switch, and temperature sensor (3-2) links to each other with electric fire disaster monitoring equipment (2) by detector (3-1) with residual current sensor (3-3).
2, the overheated monitoring device of electric wire terminal stud according to claim 1, it is characterized in that: described temperature sensor (3-2) is made of the box-like sensor of thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202064578U CN201348810Y (en) | 2008-12-30 | 2008-12-30 | Wire and cable terminal overheating monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202064578U CN201348810Y (en) | 2008-12-30 | 2008-12-30 | Wire and cable terminal overheating monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348810Y true CN201348810Y (en) | 2009-11-18 |
Family
ID=41368278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202064578U Expired - Lifetime CN201348810Y (en) | 2008-12-30 | 2008-12-30 | Wire and cable terminal overheating monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201348810Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827491A (en) * | 2016-05-18 | 2018-11-16 | 惠安县信达友工业设计有限公司 | temperature monitoring device |
| CN109073694A (en) * | 2016-04-29 | 2018-12-21 | 程洪 | The devices, systems, and methods that alarm triggering power supply disconnects |
| CN113763662A (en) * | 2021-10-13 | 2021-12-07 | 广州宏达工程顾问集团有限公司 | Electrical fire monitoring system |
-
2008
- 2008-12-30 CN CNU2008202064578U patent/CN201348810Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073694A (en) * | 2016-04-29 | 2018-12-21 | 程洪 | The devices, systems, and methods that alarm triggering power supply disconnects |
| CN108827491A (en) * | 2016-05-18 | 2018-11-16 | 惠安县信达友工业设计有限公司 | temperature monitoring device |
| CN113763662A (en) * | 2021-10-13 | 2021-12-07 | 广州宏达工程顾问集团有限公司 | Electrical fire monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |