CN202230397U - Novel temperature controller for oil-immersed transformer - Google Patents
Novel temperature controller for oil-immersed transformer Download PDFInfo
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- CN202230397U CN202230397U CN2011203346268U CN201120334626U CN202230397U CN 202230397 U CN202230397 U CN 202230397U CN 2011203346268 U CN2011203346268 U CN 2011203346268U CN 201120334626 U CN201120334626 U CN 201120334626U CN 202230397 U CN202230397 U CN 202230397U
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Abstract
Provided is a novel temperature controller for an oil-immersed transformer, comprising a meter panel and a thermal bulb connected with the meter panel via a capillary. The novel temperature controller of the utility model is characterized in that: the meter panel is internally provided with a temperature converting circuit module; and the thermal bulb is internally provided with a Pt100 platinum thermal resistance sensor connected with an input end of the temperature converting circuit module. The novel temperature controller of the utility model simplifies the structure of a temperature controller, ensures excellent security, achieves the function of external communication, substantially broadens the functions of the product, and meets the requirements of a user for multi-path acquisition.
Description
Technical field
The utility model relates to temperature controller, and particularly a kind of novel oil-filled transformer is used temperature controller, is applicable to measurement, collection to the oil-filled transformer temperature, belongs to the transformer monitoring equipment technical field.
Background technology
Oil-filled transformer is a kind of of pressure-type thermometer with temperature controller; Be specifically designed to the measurement of the winding coil temperature of oil-immersed power transformer fuel tank top layer pasta temperature and transformer, and pass through the switching and the secondary alarm circuit of the cooling system of the inner a plurality of CS control transformer fuel tanks of thermometer.Instrument is transformer temperature control protection control technology field.
(be called for short: designing and developing in process temperature controller) carried out extensive investigations research to similar products at home and abroad to the temperature controller of using at oil-filled transformer; Find the pointer temperature controller that each producer's design is both at home and abroad produced through investigation; Space in the too complicated whole table body that accounted for tool basically of inner structure is to such an extent as to want to increase the new components and parts (see figure 5) that all is restricted in the instrument.The basic function that has at existing temperature controller has: 1) gauge pointer indication dut temperature value; 2) 2-4 Control Node outputs are arranged; 3) the part instrument has the Pt100 resistance signal output of standard;
The construction of intelligent grid is carried out in the fast development of science and technology, the demand in market, the whole nation energetically; Temperature controller to the electric power oil-immersed type transformer uses is had higher requirement outside original basic function; Because original transformer accessory is installed all design typifications of seat; So hope outside no longer increasing under the situation of accessory; The temperature controller meter body can realize having the instrument (as: can export 4 ~ 20mA current signal or 0 ~ 5V/1 ~ 5V voltage signal or RS485 communication function) of various temperature function switching signal; After signal is transferred to the computing machine in the master station of a distant place, can monitor the temperature of transformer constantly, thereby understand the purpose of the operating mode realization protection electrical network operate as normal of transformer.But for temporarily realizing in the temperature controller producer of present stage and the industry.
Summary of the invention
The purpose of the utility model is to provide a kind of novel oil-filled transformer to use temperature controller, helps simplification device structure, diversified functions of the equipments.
The utility model is characterised in that: a kind of novel oil-filled transformer is used temperature controller; Comprise panel board and the thermometer bulb that is connected with panel board through kapillary; It is characterized in that: be provided with a temperature conversion circuit module in the said panel board, be provided with the Pt100 platinum resistance thermometer sensor, sensor that is connected with the temperature conversion circuit module input in the said thermometer bulb.
The advantage of the utility model: the utility model passes through built-in temperature signal modular converter, other functions that this device is also had on the existing capability basis:
1) active output 4 ~ 20mA current signal;
2) or active output 0 ~ 5V/1 ~ 5V voltage signal;
3) or active band RS485 communication function;
Thereby satisfy the construction demand of intelligent grid, realize distant place computing machine monitoring and protecting electrical network constantly.
Description of drawings
Fig. 1 is the utility model example structure synoptic diagram.
Fig. 2 is the structural drawing of the temperature conversion circuit module of the utility model embodiment.
Fig. 3 is the schematic diagram of the temperature conversion circuit module of the utility model embodiment.
Fig. 4 is the process flow diagram of the temperature conversion circuit module of the utility model embodiment.
Fig. 5 is the structural representation of present temperature controller.
Embodiment
With reference to figure 1; Fig. 2; Fig. 3 and Fig. 4, a kind of novel oil-filled transformer is used temperature controller, comprises panel board 1 and the thermometer bulb 3 that is connected with panel board 1 through kapillary 2; Be provided with a temperature conversion circuit module 4 in the said panel board 1, be provided with the Pt100 platinum resistance thermometer sensor, sensor 5 that is connected with temperature conversion circuit module 4 input ends in the said thermometer bulb 3.
Said temperature change-over circuit module 4 comprises in order to lay the wiring board of components and parts; Said wiring board is provided with band insulating power supply module, temperature measurement module, single-chip microcomputer, RS485 communication module and DA modular converter, and said single-chip microcomputer is connected with DA modular converter circuit with band insulating power supply module, temperature measurement module, RS485 communication module respectively.
Above-mentioned temperature measurement module comprises A/D filtering and the amplification module that is connected with Pt100 platinum resistance thermometer sensor, sensor, and said Pt100 platinum resistance thermometer sensor, sensor is connected with single chip circuit through A/D filtering and amplification module.
Above-mentioned DA modular converter is provided with the two-way output terminal, and wherein two-way is DC4 ~ 20mA electric current or two-way DC0 ~ 5V voltage or one road DC4 ~ 20mA electric current and one road DC0 ~ 5V voltage analog signal amount.
The practical implementation process:
Temperature survey assembly as power transformer; Temperature controller will satisfy the intellectuality of electrical network; A kind of novel temperature controller of essential research and development with multiple function switching signal, existing Related product has only single resistance signal, fails to change out different signal sources; Just in this case, we have carried out the develop work of oil-filled transformer with temperature controller.
One. this product is made up of following three parts:
1, the measurement of temperature controller and indication partly are called closed system, are made up of thermometer bulb, kapillary, flexible member parts;
2, the output of the control signal of temperature controller partly is called control system, is made up of the CS parts that quantity does not wait;
3, the output of the remote transfer signal of temperature controller partly is called the output signal system, is made up of temperature signal modular converter (see figure 2) parts;
Two. the structure of system is assembled and is acted on as follows:
1, closed system---be weldingly connected into a cavity that communicates by thermometer bulb, kapillary, flexible member three after, pour into inflating medium and add certain pressure seal and become a closed system;
2, control system---; CS by a plurality of quantity do not wait is formed; Be set in as required the different temperature point (such as: 55 ℃ .75 ℃ .90 ℃ .130 ℃), receive the continuous rising of temperature, shift fork and flexible member center link; The mechanical displacement that flexible member is produced is transferred to the step switch control gear of stirring on the shift fork on the CS; Control each switch motion successively, and strength obtains discharging after each switch motion, can not gather by the folded of strength thereupon.
3, output signal system---together imbed thermometer bulb bar internal lead to the PT100 RTD and lead in the watchcase; It is that the new construction optimized is vacateed necessary space and laid the temperature signal modular converter that instrument is selected for use; Realize built-inization of module; The temperature signal modular converter connects the 220V power supply, receives convertiblely behind the PT100 RTD signal to go out 4 ~ 20mA electric current or 0 ~ 5V/1 ~ 5V voltage signal, also can have RS485 communication function three and get one of which.
4. the operating process or the principle of work of this product (or circuit) are following:
Thermometer bulb and RTD are experienced variation of temperature, the temperature sensing medium generation volumetric expansion in the thermometer bulb simultaneously after at first, putting into the thermometer bulb bar in the testee; Then kapillary will conduct to flexible member by the volume change that causes behind the temperature sensing medium temperature-sensitive in the thermometer bulb.Flexible member will change into mechanical displacement from the dilatation that kapillary transmits then, indicated temperature, and the shift fork of drive switching control mechanism action comes driving switch.The mechanical displacement that flexible member is produced is transferred on the CS; Secondly resistance has also produced corresponding variation and has conducted to the temperature signal modular converter behind RTD temperature-sensitive; Under the situation of connecting working power; The temperature signal modular converter configures different temperatures in advance by requirement of client and outputs signal to the use of electric power master station, thereby realizes that remote monitoring reaches intelligent management.
The power module that the temperature conversion circuit module of the utility model uses band to isolate, produces needed+24V ,+5V and+the 3.3V power supply, wherein+24V supplies with DA modular converter simulating signal amount output use.
As CPU, cooperate temperature measurement module with single-chip microcomputer, Pt100 platinum resistance thermometer sensor, sensor is produced and the corresponding resistance signal of measured object temperature value, process filtering, amplification are input to the single-chip microcomputer of integrated A/D conversion, to accomplish the measurement of temperature.
Single-chip microcomputer calculates and handles according to the data measured process; Output two-way DC4 ~ 20mA electric current or two-way DC0 ~ 5V voltage or one road DC4 ~ 20mA electric current and one road DC0 ~ 5V voltage analog signal amount measured and is uploaded in user's intellectualizing system to supply with acquisition system.
Single-chip microcomputer will be measured to such an extent that data are uploaded in user's intellectualizing system through the RS485 communication module.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.
Claims (4)
1. a novel oil-filled transformer is used temperature controller; Comprise panel board and the thermometer bulb that is connected with panel board through kapillary; It is characterized in that: be provided with a temperature conversion circuit module in the said panel board, be provided with the Pt100 platinum resistance thermometer sensor, sensor that is connected with the temperature conversion circuit module input in the said thermometer bulb.
2. use temperature controller according to the described novel oil-filled transformer of claim 1; It is characterized in that: said temperature conversion circuit module comprises in order to lay the wiring board of components and parts; Said wiring board is provided with band insulating power supply module, temperature measurement module, single-chip microcomputer, RS485 communication module and DA modular converter, and said single-chip microcomputer is connected with DA modular converter circuit with band insulating power supply module, temperature measurement module, RS485 communication module respectively.
3. novel oil-filled transformer according to claim 2 is used temperature controller; It is characterized in that: said temperature measurement module comprises A/D filtering and the amplification module that is connected with Pt100 platinum resistance thermometer sensor, sensor, and said Pt100 platinum resistance thermometer sensor, sensor is connected with single chip circuit through A/D filtering and amplification module.
4. novel oil-filled transformer according to claim 2 is used temperature controller; It is characterized in that: said DA modular converter is provided with the two-way output terminal, and wherein two-way is DC4 ~ 20mA electric current or two-way DC0 ~ 5V voltage or one road DC4 ~ 20mA electric current and one road DC0 ~ 5V voltage analog signal amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203346268U CN202230397U (en) | 2011-09-07 | 2011-09-07 | Novel temperature controller for oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203346268U CN202230397U (en) | 2011-09-07 | 2011-09-07 | Novel temperature controller for oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230397U true CN202230397U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203346268U Expired - Fee Related CN202230397U (en) | 2011-09-07 | 2011-09-07 | Novel temperature controller for oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230397U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354235A (en) * | 2011-09-07 | 2012-02-15 | 福建省力得自动化设备有限公司 | Novel temperature controller for oil immersed transformer |
| CN105388933A (en) * | 2015-12-11 | 2016-03-09 | 谭焕玲 | Power transformer cooler automatic control system |
| CN112834063A (en) * | 2020-12-31 | 2021-05-25 | 中国电力科学研究院有限公司 | Power transformer temperature measuring device and measuring system capable of being checked on line |
-
2011
- 2011-09-07 CN CN2011203346268U patent/CN202230397U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354235A (en) * | 2011-09-07 | 2012-02-15 | 福建省力得自动化设备有限公司 | Novel temperature controller for oil immersed transformer |
| CN105388933A (en) * | 2015-12-11 | 2016-03-09 | 谭焕玲 | Power transformer cooler automatic control system |
| CN112834063A (en) * | 2020-12-31 | 2021-05-25 | 中国电力科学研究院有限公司 | Power transformer temperature measuring device and measuring system capable of being checked on line |
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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 |
Granted publication date: 20120523 Termination date: 20140907 |
|
| EXPY | Termination of patent right or utility model |