CN202837861U - Oil flow monitoring apparatus of electric locomotive transformer - Google Patents
Oil flow monitoring apparatus of electric locomotive transformer Download PDFInfo
- Publication number
- CN202837861U CN202837861U CN 201220369486 CN201220369486U CN202837861U CN 202837861 U CN202837861 U CN 202837861U CN 201220369486 CN201220369486 CN 201220369486 CN 201220369486 U CN201220369486 U CN 201220369486U CN 202837861 U CN202837861 U CN 202837861U
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- oil
- oil flow
- transformer
- temperature
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Abstract
The utility model relates to an oil flow monitoring apparatus of an electric locomotive transformer. Oil flow relays KP1 and KP2 are arranged at front ends of oil circulation cooling branch oil pumps of the transformer; and output signals thereof are connected to a TCMS. A temperature sensor ST1 is arranged at a main transformer oil top and an output signal of the sensor is connected to the TCMS; and the temperature sensor is used for monitoring the temperature of oil inside the tank of the transformer. When the temperature of the tank is less than a set value, the TCMS enables control functions of the oil flow relays KP1 and KP to be shielded. the oil flow relays for oil flow protection can work normally in a normal temperature environment and participate in controlling; and in a low-temperature environment, the signals of the oil flow relays for oil flow protection are shielded, thereby avoiding the malfunction of the oil flow protection due to the low temperature.
Description
Technical field
The utility model belongs to the railway locomotive technical field, relates in particular to a kind of electric locomotive transformer oil stream monitoring device.
Background technology
Electric locomotive main transformer is essentially oil-filled transformer, is bringing into play the function of " heart " in electric locomotive, in case its consequence that breaks down can be very serious, directly has influence on the traffic safety of train, can cause very large loss.Electric locomotive main transformer is protected, and mainly is the oily stream of monitoring, temperature, these several parameters of pressure.Oil stream monitoring and protecting is at the front end of transformer oil pump two oil flow relays to be installed.If there is an oil flow relay to detect without circulation of oil flow, then traction power is descended 40%, make the cooling tower ventilation reach maximum, while is in the demonstration screen display diagnostic message of cab control stand, if two oil flow relays detect without circulation of oil flow, then traction power is blocked, the computer display at cab control stand shows diagnostic message simultaneously.The temperature monitoring protection generally is to adopt temperature relay.When oil temperature surpasses setting value, stop output power, the automatic disjunction main circuit breaker of system.The pressure monitoring protection is to adopt pressure relief valve.If during power transformer interior fault, temperature raises, oil expands tank internal pressure is increased, when pressure is increased to the opening pressure of pressure relief valve, pressure relief valve can be opened rapidly release at 2ms, makes the very fast reduction of pressure in the oil tank of transformer, thereby prevents that oil tank of transformer from breaking or exploding, when pressure drops to the closing presure value, just reliably close.
In the ordinary course of things, main-transformer all is positioned under the car, and heating radiator connects and composes oil circulating system by cooling line in being arranged between machinery.Under low-temperature condition, the transformer oil viscosity can increase, and adds the resistance of thorn chip architecture heating radiator, and the delivery rate of oil pump will descend rapidly, thereby causes that oil flow relay by the false alarm action without circulation of oil flow occurs, makes the locomotive cisco unity malfunction.
The utility model content
The purpose of this utility model overcomes the deficiency of above-mentioned prior art exactly, and a kind of safe and reliable electric locomotive transformer oil stream monitoring device is provided.
The purpose of this utility model is achieved in that a kind of electric locomotive transformer oil stream monitoring device, comprise the oil flow relay that places each oily circulating cooling branch road oil pump front end of transformer, the output of each oil flow relay is connected to the locomotive control monitoring system, be used for controlling according to the situation of change of transformer oil flow the output of traction power, it is characterized in that also on the main fransformer oil top temperature sensor ST1 being set, its output signal is connected to the locomotive control monitoring system, the temperature that is used for monitoring oil tank of transformer interior oil, when the fuel tank temperature was lower than setting value, the locomotive control monitoring system was controlled functional shielding with oil flow relay.
Adopt scheme of the present utility model, in the protection of electric locomotive main transformer, protection has increased temperature restriction link to oil stream, that is: when the normal temperature environment, the protection of oil stream can work, and participates in controlling; And when low temperature environment, oil stream protection conductively-closed, thus avoid flowing the generation of protection misoperation because low temperature makes oil.
Description of drawings
Fig. 1 is the principle schematic of the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, temperature sensor ST1 adopts the Pt100 temperature sensor, places the transformer oil top, and its output signal is connected to locomotive control monitoring system TCMS.Oil flow relay KP1, KP2 are separately positioned on two oily circulating cooling branch road oil pump front ends of transformer, and its output signal also is connected to locomotive control monitoring system TCMS.Produce oil stream after the oil pump starting in the cooling system union, when oily flow reached certain value and moves oily flow, the moving plate rotation in the relay rotated indication by magnetic couple power synchronously, and signal contact is connected, and sends normal signal.When oil mass reduced to certain value and returns oily flow, moving plate returned, and sends fault-signal.Simultaneously increase a temperature requirement at locomotive control monitoring system TCMS, when the signal of temperature sensor ST1 more than 30 ℃ the time, oil flow relay KP1, KP2 participate in controlling; And when the signal of temperature sensor ST1 is lower than 30 ℃, then with the signal shielding of oil flow relay KP1, KP2.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (1)
1. an electric locomotive transformer oil flows monitoring device, comprise the oil flow relay (KP1 that places each oily circulating cooling branch road oil pump front end of transformer, KP2), the output of each oil flow relay is connected to locomotive control monitoring system (TCMS), be used for controlling according to the situation of change of transformer oil flow the output of traction power, it is characterized in that also on the main fransformer oil top temperature sensor (ST1) being set, its output signal is connected to locomotive control monitoring system (TCMS), the temperature that is used for monitoring oil tank of transformer interior oil, when the fuel tank temperature was lower than setting value, locomotive control monitoring system (TCMS) was with oil flow relay (KP1, KP2) control functional shielding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369486 CN202837861U (en) | 2012-07-29 | 2012-07-29 | Oil flow monitoring apparatus of electric locomotive transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369486 CN202837861U (en) | 2012-07-29 | 2012-07-29 | Oil flow monitoring apparatus of electric locomotive transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202837861U true CN202837861U (en) | 2013-03-27 |
Family
ID=47949525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220369486 Expired - Lifetime CN202837861U (en) | 2012-07-29 | 2012-07-29 | Oil flow monitoring apparatus of electric locomotive transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202837861U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769163A (en) * | 2017-11-27 | 2018-03-06 | 中车株洲电力机车有限公司 | A kind of guard method, system and the device of tractive transformer oil pump |
| CN109390130A (en) * | 2017-08-04 | 2019-02-26 | 中车大同电力机车有限公司 | A kind of detection and recognition methods of the malfunction of traction transformer of locomotive oil flow relay |
| CN111141982A (en) * | 2020-01-02 | 2020-05-12 | 中车青岛四方机车车辆股份有限公司 | Traction transformer oil flow abnormal fault detection device and method |
| CN113978257A (en) * | 2021-11-13 | 2022-01-28 | 中车大连机车车辆有限公司 | Oil flow velocity protection control method for locomotive vehicle-mounted traction transformer |
-
2012
- 2012-07-29 CN CN 201220369486 patent/CN202837861U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390130A (en) * | 2017-08-04 | 2019-02-26 | 中车大同电力机车有限公司 | A kind of detection and recognition methods of the malfunction of traction transformer of locomotive oil flow relay |
| CN107769163A (en) * | 2017-11-27 | 2018-03-06 | 中车株洲电力机车有限公司 | A kind of guard method, system and the device of tractive transformer oil pump |
| CN111141982A (en) * | 2020-01-02 | 2020-05-12 | 中车青岛四方机车车辆股份有限公司 | Traction transformer oil flow abnormal fault detection device and method |
| CN113978257A (en) * | 2021-11-13 | 2022-01-28 | 中车大连机车车辆有限公司 | Oil flow velocity protection control method for locomotive vehicle-mounted traction transformer |
| CN113978257B (en) * | 2021-11-13 | 2024-05-14 | 中国国家铁路集团有限公司 | Locomotive vehicle-mounted traction transformer oil flow speed protection control method |
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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: 20130327 |
|
| CX01 | Expiry of patent term |