CN2436931Y - Microcomputer temp. monitoring controller for electric power dry transformer - Google Patents
Microcomputer temp. monitoring controller for electric power dry transformer Download PDFInfo
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- CN2436931Y CN2436931Y CN 00220790 CN00220790U CN2436931Y CN 2436931 Y CN2436931 Y CN 2436931Y CN 00220790 CN00220790 CN 00220790 CN 00220790 U CN00220790 U CN 00220790U CN 2436931 Y CN2436931 Y CN 2436931Y
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Abstract
The utility model relates to a microcomputer temperature monitoring controller for electric power dry type transformers. The utility model is characterized in that the front of a casing is provided with panel operating members, measurement monitoring members which take a one-chip computer as the central processor are installed in the casing, and the inner part of the casing is also provided with a switch stabilized voltage supply and relay output members which execute control signals. The utility model has the advantages that the automatic detection, regulation and temperature alarm on environmental points and the three phases (A, B, C) of a transformer can be achieved, signal control and the transmission of data information can be accurate and reliable, and the transformer can be operated stably and reliably.
Description
The utility model is a kind of monitoring and regulation and control motor temperature of being used for, and guarantees the electric power dry-type transformer microcomputer temperature monitor of safe operation.
Relevant by retrieval patent documentation still finds no the electric power dry-type transformer microcomputer temperature monitor identical with the utility model structure.Existing temperature controller is made of power supply unit, measurement control assembly, the assembling of relay output block, because nothing returns to zero, transfers full scale, temperature compensation function in measuring control assembly, causes substantial measurement errors big; Because power supply unit adopts general transformer, poor anti jamming capability; The device of revising parameter is located in the cabinet, uses inconvenience, no automatic clear function in the complete machine, and CPU can not in time recover after crashing, and causes whole aircraft reliability poor.
The purpose of this utility model is will provide to be provided with micro veneer machine CPU in a kind of, has automatic detection, this regulation and control, and automatic zero adjustment, antijamming capability is strong, the electric power dry-type transformer temperature monitor of stable and reliable operation.
Technical solution of the present utility model is achieved in that a kind of electric power dry-type transformer microcomputer temperature monitor, it is characterized in that: casing is arranged, in the front of casing the panel operation parts are housed; Being equipped with in casing with the one-chip computer is the measurement monitor component of central processing unit; The relay output block of carrying out control signal also is housed in casing; Switching power supply also is housed in casing.
Above the panel operation parts, display unit is housed described in the utility model, below the panel operation parts, operating key is housed.In measuring monitor component; an one-chip computer CPU is arranged; the input end of one-chip computer CPU is connected to the A/O analog to digital conversion circuit; the A/O analog to digital conversion circuit is connected with filter amplifier; filter amplifier connects a multi-way switch; be installed in transformer A respectively; B; C go up mutually with transformer case on sensor all be connected with filter amplifier through multi-way switch; one-chip computer CPU also is connected to the self-correcting circuit; display circuit; storer FPROM; " house dog " holding circuit; the button initialization circuit; serial line interface, the output terminal of one-chip computer CPU is connected with the blower fan pilot relay; the overtemperature alarm relay; the overtemperature tripping relay.Connect and compose " house dog " holding circuit by integrated circuit and diode.Certainly, also can adopt other suitable version.
The utility model has the advantages that: this machine is owing to adopt the computing machine single card microcomputer as central processing unit, and be provided with the self-correcting circuit, can automatic zero adjustment, the school is full, guaranteed measuring accuracy: owing to be provided with parameter setting in this machine, apparent three kinds of working methods are inquired about, are patrolled automatically in reconnaissance, can be to three-phase and environment temperature from 0-200 ℃ patrol and examine automatically, overtemperature alarm, auto-control automatically, powerful, easy to use; Owing to be provided with watchdog circuit at the CPU input end, can prevent that CPU from crashing, power supply adopts switching power supply, adopt the Rs232 serial interface bus, make control signal and data transmission accurately, reliably, antijamming capability is strong, guarantees transformer safety, stable, reliability service.
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the contour structures synoptic diagram of a kind of electric power dry-type transformer temperature monitor of the present utility model;
Fig. 2 is the profile structure synoptic diagram of electric power dry-type transformer temperature monitor of the present utility model;
Fig. 3 is the inner structure schematic block diagram of electric power dry-type transformer temperature monitor of the present utility model;
Fig. 4 is the measurement supervisory circuit functional-block diagram in the electric power dry-type transformer temperature monitor of the present utility model;
Fig. 5 is the measurement supervisory circuit electrical schematic diagram in the electric power dry-type transformer temperature monitor of the present utility model.
Shown in accompanying drawing 1: in the front of casing 7 panel 1 is housed, a plurality of charactrons 2 are housed above panel 1, link to each other with the CPU input end.Be equipped with successively below panel 1 that " setting/affirmation " key 3, " ∧ " add key 4, " ∨ " subtracts key 5, " reconnaissance/return " key 6, all link to each other with the CPU input end.
Shown in accompanying drawing 2, on the back shroud left side of casing wiring label 8 is housed, connecting terminal block 9 is housed the lower left down at it, the communication interface 10 that links to each other with CPU is equipped with in the below, right side, sensor input socket 11 is equipped with in the top, right side, is drilled with mounting hole in the casing side.
Shown in accompanying drawing 3, Switching Power Supply 13 output ± 12V, 5V stabilized voltage supply link to each other with device for detecting temperature 14, fan controller 15.
Shown in accompanying drawing 4, be installed in sensor 16,17,18 that transformer A, B, C go up mutually respectively and be connected with multi-way switch 20 input ends by line with environmental sensor 19 on being contained in transformer case.Multi-way switch 20 input ends are connected with filter amplifier 21 input ends, and its output terminal is connected with A/D analog to digital conversion circuit 22 input ends, and its output terminal is connected with single-chip microcomputer 29 input ends.Input end at one-chip computer also is connected with self-correcting circuit 23, display circuit 24, " house dog " holding circuit 25, reading writing memory EPROM26, button initialization circuit 27, serial line interface 28; the output terminal of singlechip microcomputer CPU links to each other with output amplifying signal circuit 30; its output terminal respectively with blower fan pilot relay 31, overtemperature alarm relay 32, overtemperature tripping relay 33 links to each other.
Shown in accompanying drawing 5, sampling switch circuit connects and composes bridge circuit by resistance R 01-R09, adjustable resistance P3 and RT1-RT4, via the filtering circuit that resistance R 6, R14-R19, capacitor C 4-C8, CE constitute, its output terminal 1,5,12,13,14 is connected with the input end of sampling integrated package U5.Its output terminal links to each other with the operational amplification circuit that is made of resistance R 2, R3, R11, R12, capacitor C 9, amplifier U6, and its output terminal constitutes the A/D analog to digital conversion circuit through adjustable resistance P1 and A/D analog to digital converter U1, and its output terminal links to each other with single-chip microcomputer.Constitute by integrated circuit U8 and diode V " house dog " holding circuit, its output terminal links to each other with single-chip microcomputer U1 input end.U2 is for can go out storer, and its output terminal links to each other with the input end of single-chip microcomputer U1.The CPU output terminal with connect and compose display circuit by exclusion RP1, charactron B1-B5, driver U4.Constitute crystal oscillating circuit by capacitor C 2, C3 and crystal oscillator X1, to CPU input dominant frequency.Constitute the signal output amplifier by triode V1-V3, diode V4-V6, its input end links to each other with CPU, and output terminal links to each other with relay.Button S2-S5 is the touch key-press on the panel, and its output terminal links to each other with the CPU input end.
Constitute 1.5 volts stabilized voltage supply by integrated circuit U7, resistance R 13, P2, capacitor C 10, C11, offer bridge circuit.
Temperature measurement range of the present utility model is 0 ℃-200 ℃, measuring object: three coil temperatures of transformer A, B, C three-phase, an environment temperature, measuring accuracy is less than 0.5 ℃, report to the police, trip contact capacity: AV125V/15A, 220V/5A, DC110V/8A, 220V/5A in control accuracy ± 0.2 ℃.
Five charactrons that be equipped with the panel top, the first Presentation Function character H, A, B, C, D, E, F, G, function is as follows;
H-represents temperature mxm. in the three-phase coil,
A-represents the loop A phase,
B-represents coil B phase,
C-represents coil C phase,
D-represents environment temperature,
E-represents fan condition,
F-represents alarm condition,
G-represents tripped condition,
All the other group of four figures pipes are temperature value.
The keypress function of panel below is as follows: setting/acknowledgement key is that the setting and the affirmation of temperature withdrawed from." ∧ " whenever presses once for adding key, and the temperature value adds 1 at present." ∨ " for subtracting key, and function is with to add key opposite.Reconnaissance/return key is the reconnaissance inquiry and returns multiplexing key.
These facility have parameter setting, reconnaissance to inquire about, patrol and examine automatically three kinds of working methods, can to the coil temperature of A, B, C three-phase in the transformer, environment temperature from 0 ℃-200 ℃ patrol and examine automatically, auto-control, overtemperature alarm automatically, guarantee transformer safety, stable, reliability service.
After the power transformer energising, be installed in the A in the transformer, B, four platinum resistance thermometer sensor, sensors in C three-phase and the environment produce and the corresponding resistance signal of temperature value, signal enters sampling switch, filter amplifier and modulus circuit conversion back input one-chip computer, one-chip computer is according to measurement data and the various controlled variable of external setting-up, through Computer Processing, show measured temperature value, and the output control signal corresponding is to the blower fan pilot relay, the overtemperature alarm pilot relay, the overtemperature tripping relay, thereby realize the automatic open close blower fan, regulate the temperature in the transformer; Automatic open close warning device and overtemperature tripgear avoid accident to take place, and guarantee the reliable and secure operation of transformer.
Claims (4)
1, a kind of electric power dry-type transformer microcomputer temperature monitor is characterized in that: casing is arranged, in the front of casing the panel operation parts are housed; Being equipped with in casing with the one-chip computer is the measurement monitor component of central processing unit; The relay output block of carrying out control signal also is housed in casing; Switching power supply also is housed in casing.
2, electric power dry-type transformer microcomputer temperature monitor according to claim 1 is characterized in that: above the panel operation parts display unit is housed, below the panel operation parts operating key is housed.
3; electric power dry-type transformer microcomputer temperature monitor according to claim 1; it is characterized in that: in measuring monitor component; an one-chip computer CPU is arranged; the input end of one-chip computer CPU is connected to the A/O analog to digital conversion circuit; the A/O analog to digital conversion circuit is connected with filter amplifier; filter amplifier connects a multi-way switch; be installed in transformer A respectively; B; C go up mutually with transformer case on sensor all be connected with filter amplifier through multi-way switch; one-chip computer CPU also is connected to the self-correcting circuit; display circuit; storer FPROM; " house dog " holding circuit; the button initialization circuit; serial line interface, the output terminal of one-chip computer CPU is connected with the blower fan pilot relay; the overtemperature alarm relay; the overtemperature tripping relay.
4, electric power dry-type transformer microcomputer temperature monitor according to claim 1 is characterized in that: connect and compose " house dog " holding circuit by integrated circuit and diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00220790 CN2436931Y (en) | 2000-06-20 | 2000-06-20 | Microcomputer temp. monitoring controller for electric power dry transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00220790 CN2436931Y (en) | 2000-06-20 | 2000-06-20 | Microcomputer temp. monitoring controller for electric power dry transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2436931Y true CN2436931Y (en) | 2001-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00220790 Expired - Fee Related CN2436931Y (en) | 2000-06-20 | 2000-06-20 | Microcomputer temp. monitoring controller for electric power dry transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2436931Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322973A (en) * | 2011-07-27 | 2012-01-18 | 刘广友 | method for monitoring distribution transformer temperature on line |
| CN102692935A (en) * | 2012-05-16 | 2012-09-26 | 张金木 | Temperature display controlling device for dry-type transformer |
| CN103064448A (en) * | 2012-12-25 | 2013-04-24 | 四川九洲空管科技有限责任公司 | Temperature monitoring and control device for airborne collision avoidance system |
| CN106099853A (en) * | 2016-06-22 | 2016-11-09 | 宁波市艾亿赛热保护科技有限公司 | One is applicable to all aircraft, aviation Circuits System hot temperature anomaly protector |
| CN106444896A (en) * | 2016-10-16 | 2017-02-22 | 陈畅 | Intelligent temperature controller of dry type transformer |
| CN109062284A (en) * | 2018-09-12 | 2018-12-21 | 合肥多元节电科技有限公司 | A kind of novel dry change temperature controller |
| CN109445491A (en) * | 2018-12-21 | 2019-03-08 | 益和电气集团股份有限公司 | Intelligent transformer temperature controller and its working method |
-
2000
- 2000-06-20 CN CN 00220790 patent/CN2436931Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322973A (en) * | 2011-07-27 | 2012-01-18 | 刘广友 | method for monitoring distribution transformer temperature on line |
| CN102692935A (en) * | 2012-05-16 | 2012-09-26 | 张金木 | Temperature display controlling device for dry-type transformer |
| CN102692935B (en) * | 2012-05-16 | 2014-07-02 | 张金木 | Temperature display controlling device for dry-type transformer |
| CN103064448A (en) * | 2012-12-25 | 2013-04-24 | 四川九洲空管科技有限责任公司 | Temperature monitoring and control device for airborne collision avoidance system |
| CN106099853A (en) * | 2016-06-22 | 2016-11-09 | 宁波市艾亿赛热保护科技有限公司 | One is applicable to all aircraft, aviation Circuits System hot temperature anomaly protector |
| CN106444896A (en) * | 2016-10-16 | 2017-02-22 | 陈畅 | Intelligent temperature controller of dry type transformer |
| CN109062284A (en) * | 2018-09-12 | 2018-12-21 | 合肥多元节电科技有限公司 | A kind of novel dry change temperature controller |
| CN109445491A (en) * | 2018-12-21 | 2019-03-08 | 益和电气集团股份有限公司 | Intelligent transformer temperature controller and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |