CN201561817U - High-voltage cable joint temperature rise alarm - Google Patents
High-voltage cable joint temperature rise alarm Download PDFInfo
- Publication number
- CN201561817U CN201561817U CN2009200341848U CN200920034184U CN201561817U CN 201561817 U CN201561817 U CN 201561817U CN 2009200341848 U CN2009200341848 U CN 2009200341848U CN 200920034184 U CN200920034184 U CN 200920034184U CN 201561817 U CN201561817 U CN 201561817U
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- Prior art keywords
- point
- meet
- pin
- resistor
- termination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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- Emergency Alarm Devices (AREA)
Abstract
The utility model belongs to the field of electrotechnology, and provides a high-voltage cable joint temperature rise alarm; a transformer Tc is made by two pieces of U-shaped iron cores and a coil, and a high voltage transmission line is taken as a primary stage of the Tc; the alternating-current voltage is obtained from a secondary coil of the Tc, and a low-voltage direct-current power supply is obtained by a rectifying voltage-stabilizing circuit; a thermistor Rt with negative temperature coefficient is taken as a sensor, and a voltage comparator formed by an F311 is used for overturning the circuit when the Rt resistance value is reduced to a certain valve, acousto-optic alarm can be triggered.
Description
Technical field
The utility model belongs to the electrotechnics field
Background technology
At high pressure cable joint place, owing to temperature raises transmission line malfunction takes place usually, the mirror infrared temperature instrument can detected temperatures though look in the distance, but the joint that detects because of need is many, labour intensity is big, and difficult resolution of fault initial stage, the hidden danger of omission is usually arranged, still there is not the instrument of on-line monitoring high pressure cable joint temperature rise in the market.
Summary of the invention
The utility model technical issues that need to address provide a kind of cheapness and high pressure cable joint temperature rise alarm that can on-line monitoring easy for installation, and when cable joint place temperature surpassed certain value, automatic sound-light alarm was to fill up the blank of existing market.
The concrete technical scheme of the utility model is, does the iron core of transformer with two U sections cores, and the elementary of transformer is high voltage transmission line, number of turn n
1=1, with enameled wire coiling secondary coil, the number of turn is n
2Two end points of secondary coil are connected on P respectively
1And P
2On the point, the two termination P of the piezoresister Rv of protection usefulness
1And P
2Point, Vc are the rectifier bridge integrated circuit, and its ac input end meets P respectively
1And P
2Point, its cathode output end meets P
3Point, cathode output end meets P
4Point, capacitor C
1And C
2Two ends meet P respectively
3And P
4The point; N
1With integrated three-terminal voltage-stabilizing circuit 7812, N
11 pin meet P
3Point, 2 pin meet P
4Point, 3 pin meet P
5Point, capacitor C
3And C
4Be connected on P respectively
4And P
5The point on; N
2Use integrated voltage comparator F311, resistor R
1Two ends be connected on P respectively
5And P
6On the point, the two ends of the thermal resistor Rt of negative temperature coefficient are connected on P respectively
6And P
4On the point, N
22 pin meet P
6Point, resistor R
2A termination P
5Point, another termination potentiometer Rp
1An end points on, Rp
1Another end points pass through resistor R
3Meet P
4Point, Rp
1Centre tap meet N
23 pin, N
21 and 4 pin meet P simultaneously
4Point, N
28 pin meet P
5Point, resistor R
4A termination P
5Point, another termination red light emitting diodes V
1Positive pole, V
1Negative pole connect the end of B, another termination N of B
27 pin, B is commercially available piezoelectric ceramic loudspeaker, V
1Bright, B sounding represents that the temperature at cable joint place surpasses setting value.
Owing to adopted such scheme, when high pressure cable joint place temperature surpassed certain value, this alarm sends sound and light signal, and was easy for installation, cheap, can onlinely detect.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, Tc is a transformer among the figure, for easy for installation, does the iron core of transformer with two U sections cores, and the elementary of transformer is high voltage transmission line, number of turn n
1=1, with enameled wire coiling secondary coil, number of turn n
2Relevant with the maximum supply current of high voltage transmission line, the electric current greatly then number of turn is few; Two end points of secondary coil are connected on P
1And P
2On the point, the two termination P of the piezoresister Rv of protection usefulness
1And P
2Point, Vc are the rectifier bridge integrated circuit, and its ac input end meets P respectively
1And P
2Point, its cathode output end meets P
3Point, cathode output end meets P
4Point, capacitor C
1And C
2Two ends meet P respectively
3And P
4The point; N
1With integrated three-terminal voltage-stabilizing circuit 7812, N
11 pin meet P
3Point, 2 pin meet P
4Point, 3 pin meet P
5Point, P
5Point output galvanic current is pressed the power supply of doing metering circuit; Capacitor C
3And C
4Be connected on P respectively
4And P
5The point on; N
2Use integrated voltage comparator F311, it and related elements are formed voltage comparator circuit, resistor R
1Two ends be connected on P respectively
5And P
6On the point, the two ends of the thermal resistor Rt of negative temperature coefficient are connected on P respectively
6And P
4On the point, N
22 pin meet P
6Point, resistor R
2A termination P
5Point, another termination potentiometer Rp
1An end points on, Rp
1Another end points pass through resistor R
3Meet P
4Point, Rp
1Centre tap meet N
23 pin, so that the reference voltage of voltage comparator upset, N to be provided
21 and 4 pin meet P simultaneously
4Point, N
28 pin meet P
5Point, resistor R
4A termination P
5Point, another termination red light emitting diodes V
1Positive pole, V
1Negative pole connect the end of B, another termination N of B
27 pin, B is commercially available piezoelectric ceramic loudspeaker, resistor R
5A termination P
5Point, another termination green LED V
2Positive pole, V
2Negative pole meet P
4The point; V
2Bright expression alarm work is normal, V
1Bright, B sounding represents that the temperature at cable joint place surpasses setting value.During installation, thermal resistor Rt should be entangled in cable joint near, regulator potentiometer Rp
1, the temperature of adjusting and reporting to the police.
Claims (1)
1. high pressure cable joint temperature rise alarm is characterized in that: do the iron core of transformer with two U sections cores, the elementary of transformer is high voltage transmission line, and with enameled wire coiling secondary coil, two end points of secondary coil are connected on P respectively
1And P
2On the point, the two termination P of the piezoresister Rv of protection usefulness
1And P
2Point, Vc are the rectifier bridge integrated circuit, and its ac input end meets P respectively
1And P
2Point, its cathode output end meets P
3Point, cathode output end meets P
4Point, capacitor C
1And C
2Two ends meet P respectively
3And P
4The point; N
1With integrated three-terminal voltage-stabilizing circuit 7812, N
11 pin meet P
3Point, 2 pin meet P
4Point, 3 pin meet P
5Point, capacitor C
3And C
4Be connected on P respectively
4And P
5The point on; N
2Use integrated voltage comparator F311, resistor R
1Two ends be connected on P respectively
5And P
6On the point, the two ends of the thermal resistor Rt of negative temperature coefficient are connected on P respectively
6And P
4On the point, N
22 pin meet P
6Point, resistor R
2A termination P
5Point, another termination potentiometer Rp
1An end points on, Rp
1Another end points pass through resistor R
3Meet P
4Point, Rp
1Centre tap meet N
23 pin, N
21 and 4 pin meet P simultaneously
4Point, N
28 pin meet P
5Point, resistor R
4A termination P
5Point, another termination red light emitting diodes V
1Positive pole, V
1Negative pole connect the end of B, another termination N of B
27 pin, B is commercially available piezoelectric ceramic loudspeaker, V
1Bright, B sounding represents that the temperature at cable joint place surpasses setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200341848U CN201561817U (en) | 2009-08-11 | 2009-08-11 | High-voltage cable joint temperature rise alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200341848U CN201561817U (en) | 2009-08-11 | 2009-08-11 | High-voltage cable joint temperature rise alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561817U true CN201561817U (en) | 2010-08-25 |
Family
ID=42626965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200341848U Expired - Fee Related CN201561817U (en) | 2009-08-11 | 2009-08-11 | High-voltage cable joint temperature rise alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561817U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236747A (en) * | 2014-10-17 | 2014-12-24 | 国家电网公司 | Warning method and self-energy taking warning indicator for overheating of electric system joints |
| CN106017720A (en) * | 2016-07-28 | 2016-10-12 | 卢庆港 | Temperature measurement device based on ferromagnetic material magnetic conductive capability change detection and temperature measurement method thereof |
| CN108931306A (en) * | 2018-08-22 | 2018-12-04 | 国网冀北电力有限公司唐山供电公司 | A kind of electric intelligent gasket and method with overheat alarm function |
-
2009
- 2009-08-11 CN CN2009200341848U patent/CN201561817U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236747A (en) * | 2014-10-17 | 2014-12-24 | 国家电网公司 | Warning method and self-energy taking warning indicator for overheating of electric system joints |
| CN106017720A (en) * | 2016-07-28 | 2016-10-12 | 卢庆港 | Temperature measurement device based on ferromagnetic material magnetic conductive capability change detection and temperature measurement method thereof |
| CN106017720B (en) * | 2016-07-28 | 2019-08-20 | 卢庆港 | Temperature measuring equipment and its temp measuring method based on the detection of ferromagnetic material magnetic conduction capacity variation |
| CN108931306A (en) * | 2018-08-22 | 2018-12-04 | 国网冀北电力有限公司唐山供电公司 | A kind of electric intelligent gasket and method with overheat alarm function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: JINCHANG POWER SUPPLY COMPANY OF GANSU ELECTRIC POWER COMPANY Effective date: 20131205 Owner name: JINCHANG POWER SUPPLY COMPANY OF GANSU ELECTRIC PO Free format text: FORMER OWNER: JIAYUAN TECHNOLOGY TRADE DEVELOPMENT CO., LTD., XI'AN Effective date: 20131205 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 737100 JINCHANG, GANSU PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131205 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Jinchang Power Supply Company of Gansu Electric Power Corporation Patentee after: XI'AN JIAYUAN TECHNOLOGY TRADE DEVELOPMENT CO., LTD. Address before: 737100 No. 78, Xinhua Road, Gansu, Jinchang Patentee before: Jinchang Power Supply Company of Gansu Electric Power Corporation Patentee before: XI'AN JIAYUAN TECHNOLOGY TRADE DEVELOPMENT CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20170811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |