CN2117599U - Temp. monitor for power line cable - Google Patents
Temp. monitor for power line cable Download PDFInfo
- Publication number
- CN2117599U CN2117599U CN 91231649 CN91231649U CN2117599U CN 2117599 U CN2117599 U CN 2117599U CN 91231649 CN91231649 CN 91231649 CN 91231649 U CN91231649 U CN 91231649U CN 2117599 U CN2117599 U CN 2117599U
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- line
- thermometer
- electric contact
- power cable
- speech signal
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Abstract
The utility model relates to a temperature monitor for power cable (line) used for monitoring the temperature conditions of the power cable (line). A commercial helical type thermal sensitive member temperature meter is communicated with the cable line through a slice shaped metal support and is communicated with a speech signal device and an alarming device through electric contacts. The thermal sensitive member of the temperature meter bears parity electricity with the electric line. When the temperature of the electric line rises, the thermal sensitive member is heated to shift and touches the electric contact, and accordingly conducts an acoustic-optic line to indicate the line of excessive temperature to the working personnel who tackle the line timely.
Description
A kind of power cable (line) temperature monitoring system.
The utility model is used for the temperature monitoring of 400V and following power cable (line).
In power transformation, distribution and bigger usefulness electric unit, transformer, power cable commonly used, the transmission pressure of motor all will produce heat because of having load, and uniform temperature is arranged.But some cable is excessive because of loading, and reasons such as the contact of electrical lead is loosening, eddy current usually make the circuit heating exceed normal safe temperature, and this just is overtemperature.Overtemperature repeatedly or overtemperature time are normal excessively, can make the insulating material of circuit aging, and intensity reduces, and causes between the cable phase line to puncture, and lead is scrapped, motor burns out, transformer catches fire even explode, and can cause large-area power-cuts.For preventing the generation of this type of accident, the staff just must touch the frequent armrest of cable, watches, smelling comes tours of inspection, and not only labour intensity is big, checks inaccurately, and certain danger is arranged.
In order to grasp power equipment, the temperature conditions of power cable especially, the symptom of a trend of discovery accident in time takes measures to solve as early as possible, more importantly is protection staff's life security, eliminates the danger of its charged work on the spot.
We have designed a kind of power cable (line) temperature monitoring system, and the temperature monitoring element of this design just directly is contained on the power cable (line).Send sound and light signal by certain circuit and instrument to people, allow the staff know cable (line) overtemperature, with timely processing.
The utility model is finished like this, commercially available screw type thermal sensing element thermometer is contained in an end of a sheet metal support, the other end of metal support directly is crimped on the terminal of power cable (line) and the junction of switch by screw, make metal support, the thermal sensing element of thermometer and cable (line) are with idiostatic.The transparent table that the extension line of an electric contact and it is installed in thermometer is coverd with again, and this extension line connects speech signal device, and this thermometer just becomes screw type thermal sensing element electric contact thermometer (calling electric contact thermometer in the following text).
The speech signal device inserts the extension line from electric contact.A is through signal lamp ground connection, b is through diode, relay (an end ground connection), and relay has two normally opened contacts, thereby a control conducting language integration module is drawn speech signal output (BX) line, another control conducting trip signal line, the trip signal line connects the power switch electrical apparatus release;
The BX line of being drawn by the speech signal device inserts alarm, connects loudspeaker and sensitive relay through the low frequency speech amplifier, and the latter connects the time relay, draws trip signal (TX) line more thus and inserts signalling means; By a 9V uninterrupted power source of forming by transformer, stabilized voltage supply, battery; Be installed in the 9V uninterrupted power source in the alarm, by the alarm in the lead connected system and all speech signal devices to provide electric energy to it.
An electric contact thermometer is installed on every lead of a monitored three-phase electricity cable, is connected the speech signal device by its electric contact extension line.
Each speech signal device can insert the extension line of three electric contact thermometers simultaneously.With intrasystem at least one all insert in the alarm to tens speech signal devices.The shift in position of making circular arc can be covered with table in the position of electric contact.
The design has substituted the temperature of manual detection power cable (line), and accurately, directly perceived, safety, convenience, and it is to report to the police to the staff by the phonetic sound light signal, the staff not situation under, it can also definite time-lag the instruction automatic trip.
Figure one screw type thermal sensing element electric contact thermometer structural drawing (front view)
1 ┈ sheet metal support.The transparent table of 2 ┈ covers
3 ┈ screw type thermal sensing elements.4 ┈ electric contact and extension lines.
Figure two screw type thermal sensing element electric contact thermometer structural drawing (side view)
The transparent table of 1 ┈ sheet metal support, 2 ┈ covers
3 ┈ screw type thermal sensing elements, 4 ┈ electric contact and extension lines
Figure three system schematic
5 ┈ alarms, 6 ┈ speech signal devices
7 ┈ screw type thermal sensing element electric contact thermometers
8 ┈ are by charged (400v and following) cable end of thermometric.
Figure four speech signal devices, the alarm schematic diagram
5 ┈ alarms, 6 ┈ speech signal devices
7 ┈ screw type thermal sensing element electric contact thermometers
9 ┈ language integration modules, 10 ┈ speech amplifiers
Embodiment: the junction that electric contact thermometer is crimped on detected power cable (line) terminal and switch by metal support, the other end of metal support connects the thermal sensing element of thermometer, the thermal sensing element of thermometer just has idiostatic with power cable like this, when line temperature raises, the thermal sensing element expanded by heating is shifted, if it has contacted electric contact, by extension line, it just thus conducting the circuit of whole monitoring system.At first the signal lamp of signalling means is glittering, two normally opened contact closures of relay, a conducting language integration module, transfer to alarm by speech signal output (BX) line, through low frequency speech signal amplifier, loudspeaker have sent the warning language that records in advance, sensitive relay gets the electrical contact closure simultaneously, thereby make the capable action of the time relay, the time-delay contact is with time closing, and then trip command is through another contact of the relay of trip signal (TX) line arriving signal device, and this contact is closed already, therefore trip command is sent, and tripping operation is carried out.
When alarm is received the language alarm signal of sending from intrasystem any signalling means, all can produce above-mentioned action.
Claims (5)
1, a kind of power cable (line) temperature monitoring system, form by screw type thermal sensing element thermometer etc., it is characterized in that an end of a sheet metal support connects the thermal sensing element of screw type thermal sensing element thermometer, the other end connects the terminal of power cable (line) and the junction of switch, the transparent table that has an electric contact and extension line thereof to be installed in thermometer is coverd with, this extension line connects the speech signal device, and this thermometer just becomes screw type thermal sensing element electric contact thermometer
A, speech signal device insert the extension line from electric contact.A, through signal lamp ground connection.B, through diode, relay (an end ground connection), relay has 2 normally opened contacts, a control conducting language integration module is drawn speech signal and is exported to (BX) line, another control conducting trip signal line, the trip signal line connects the power switch electrical apparatus release:
B, the BX line of being drawn by the speech signal device insert alarm, connect loudspeaker and sensitive relay through the low frequency speech amplifier, and the latter connects the time relay, draw trip signal (TX) line more thus and insert signalling means; By a 9V uninterrupted power source of forming by transformer, stabilized voltage supply, battery.
2, a kind of power cable as claimed in claim 1 (line) temperature monitoring system is characterized in that each bar electricity (line) of each root three-phase electricity cable is gone up screw type electric contact thermometer of installation.
3, a kind of power cable as claimed in claim 1 (line) temperature monitoring system is characterized in that each speech signal device inserts three extension lines from the thermometer electric contact.
4, a kind of power cable as claimed in claim 1 (line) temperature monitoring system is characterized in that having at least in the system one all to insert in the alarm to numerous speech signal device.
5, a kind of power cable as claimed in claim 1 (line) temperature monitoring system is characterized in that the position of electric contact can change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91231649 CN2117599U (en) | 1991-12-14 | 1991-12-14 | Temp. monitor for power line cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91231649 CN2117599U (en) | 1991-12-14 | 1991-12-14 | Temp. monitor for power line cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117599U true CN2117599U (en) | 1992-09-30 |
Family
ID=4936828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91231649 Granted CN2117599U (en) | 1991-12-14 | 1991-12-14 | Temp. monitor for power line cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117599U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437649C (en) * | 2005-07-13 | 2008-11-26 | 张熔 | High-temperature contacting detector installation hung at normal-temperature and temperature sensing hanger |
| CN106839334A (en) * | 2017-03-07 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of air-conditioner self-protecting device and the air-conditioner with the self-protecting device |
-
1991
- 1991-12-14 CN CN 91231649 patent/CN2117599U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437649C (en) * | 2005-07-13 | 2008-11-26 | 张熔 | High-temperature contacting detector installation hung at normal-temperature and temperature sensing hanger |
| CN106839334A (en) * | 2017-03-07 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of air-conditioner self-protecting device and the air-conditioner with the self-protecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |