CN202771285U - Transformer temperature controller capable of externally transmitting temperature signals accurately - Google Patents
Transformer temperature controller capable of externally transmitting temperature signals accurately Download PDFInfo
- Publication number
- CN202771285U CN202771285U CN 201220322960 CN201220322960U CN202771285U CN 202771285 U CN202771285 U CN 202771285U CN 201220322960 CN201220322960 CN 201220322960 CN 201220322960 U CN201220322960 U CN 201220322960U CN 202771285 U CN202771285 U CN 202771285U
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- Prior art keywords
- movement
- transformer
- fixing sleeve
- temperature controller
- potentiometer
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- Expired - Lifetime
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- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
The utility model discloses a transformer temperature controller capable of externally transmitting temperature signals accurately. The transformer temperature controller comprises a movement (1) and a movement fixing sleeve (2). The movement fixing sleeve (2) is connected with a shift fork seat (4) and a meter hand (5) successively through a screw (3); a resistor body of a rotating potentiometer (6) is fixed outside the movement fixing sleeve (2); and the movement fixing sleeve (2) and the resistor body (6) form the rotating potentiometer. When the movement drives the movement fixing sleeve to rotate, the temperature signals can be accurately converted into electrical signals which are further transmitted externally. Because the formed potentiometer is located inside the unit body of the transformer temperature controller, external electromagnetic interference can be isolated, and at the same time, the length of an external-connection lead wire is reduced greatly, thereby reducing detection errors caused by the electromagnetic interference and enabling accurate results; and further, the potentiometer can be replaced without the outage of a transformer required, thereby enabling time-saving property.
Description
Technical field
The utility model relates to a kind of transformer temperature controller, especially a kind of simple in structure, accurate transformer temperature controller of unofficial biography temperature signal.
Background technology
Transformer temperature controller need to detect Transformer Winding and oil surface temperature, its primary structure is to be provided with the current transformer that joins with the transformer current mutual inductor, current transformer output is joined with the heating (resistance wire) that is built in the copper body, an end is provided with catch bar on its copper body, the other end joins with placing the sensing catheter (kapillary) in the temperature-sensitive bag, is full of temperature sensing medium in the sealing system that temperature-sensitive bag, sensing catheter and copper body consist of.The temperature that the temperature-sensitive bag is responded to and heating all make the volume of temperature sensing medium change thereupon, this volume variable orders about catch bar and produces a corresponding displacement, driving movement and drive are connected as a single entity with movement and place the pointer on the dial plate to rotate, and indicate dut temperature; Shift fork by being connected as a single entity with movement is stirred the switch that is arranged on temperature control point and is realized temperature control simultaneously.Carry out unofficial biography in order to convert measured temperature signal to electric signal, existing transformer temperature controller is to adopt the transmission of PT100 platinum resistance signal, be about to temperature-sensitive that the temperature-sensitive platinum resistance is placed on temperature controller and wrap that to insert transformer inner, the resistance signal that the temperature-sensitive platinum resistance produces with the temperature variation of transformer inside is by the lead-in wire unofficial biography.Because the temperature-sensitive platinum resistance is placed on transformer inside, temperature-sensitive platinum resistance and its external lead wire all easily are subject to the transformer electromagnetic interference (EMI), the accuracy of the resistance signal that transmits is exerted an influence, and platinum resistance are in case damage, need transformer to have a power failure and to change afterwards, waste time and energy.
Summary of the invention
The utility model is in order to solve the existing above-mentioned technical matters of prior art, and a kind of simple in structure, accurate transformer temperature controller of unofficial biography temperature signal is provided.
Technical solution of the present utility model is: a kind of precisely transformer temperature controller of unofficial biography temperature signal, movement and movement fixed cover are arranged, the movement fixed cover joins with shift fork seat, indicator successively by screw, described movement fixed cover is fixed with the resistive element of rotational potentiometer outward, and movement fixed cover and resistive element consist of rotational potentiometer.
Movement fixed cover of the present utility model and resistive element consist of rotational potentiometer, and the movement fixed cover is the turning axle of rotational potentiometer, when movement drives the rotation of movement fixed cover, can accurately temperature signal be become electric signal and unofficial biography.Because formed potentiometer is positioned at the transformer temperature controller internal body, has completely cut off external electromagnetic interference, external lead wire also shortens greatly simultaneously, has reduced the detection error that electromagnetic interference (EMI) produces, and the result is accurate.Do not need simultaneously transformer to have a power failure namely replaceable, time saving and energy saving.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.As shown in Figure 1: as the prior art, movement 1 and movement fixed cover 2 are arranged, movement fixed cover 2 runs through successively by screw 3 and joins with shift fork seat 4, indicator 5, shift fork seat 4 is structure as a whole with shift fork 8, with the prior art difference be the resistive element 6 that outside movement fixed cover 2, is fixed with rotational potentiometer, movement fixed cover 2 consists of rotational potentiometers with resistive element 6.
When the temperature of oil in transformer of monitoring changed, the movement adapter sleeve made rotational potentiometer generation angle displacement, and the resistance output of potentiometer changes, and regulates its Changing Pattern, makes the temperature variant rule of its resistance with the PT100 platinum resistance consistent.
Claims (1)
1. accurate transformer temperature controller of unofficial biography temperature signal, movement (1) and movement fixed cover (2) are arranged, movement fixed cover (2) joins with shift fork seat (4), indicator (5) successively by screw (3), it is characterized in that: the outer resistive element (6) that is fixed with rotational potentiometer of described movement fixed cover (2), movement fixed cover (2) consists of rotational potentiometer with resistive element (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322960 CN202771285U (en) | 2012-07-05 | 2012-07-05 | Transformer temperature controller capable of externally transmitting temperature signals accurately |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322960 CN202771285U (en) | 2012-07-05 | 2012-07-05 | Transformer temperature controller capable of externally transmitting temperature signals accurately |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771285U true CN202771285U (en) | 2013-03-06 |
Family
ID=47777848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322960 Expired - Lifetime CN202771285U (en) | 2012-07-05 | 2012-07-05 | Transformer temperature controller capable of externally transmitting temperature signals accurately |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721483A (en) * | 2012-07-05 | 2012-10-10 | 大连世有电力科技有限公司 | Transformer temperature controller capable of accurately transmitting temperature signal |
-
2012
- 2012-07-05 CN CN 201220322960 patent/CN202771285U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721483A (en) * | 2012-07-05 | 2012-10-10 | 大连世有电力科技有限公司 | Transformer temperature controller capable of accurately transmitting temperature signal |
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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 |
Granted publication date: 20130306 |
|
| CX01 | Expiry of patent term |