CN219916231U - EPS system inversion output transformer temperature control device - Google Patents
EPS system inversion output transformer temperature control device Download PDFInfo
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- CN219916231U CN219916231U CN202223571683.5U CN202223571683U CN219916231U CN 219916231 U CN219916231 U CN 219916231U CN 202223571683 U CN202223571683 U CN 202223571683U CN 219916231 U CN219916231 U CN 219916231U
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- eps system
- temperature measuring
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- 239000000523 sample Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000012806 monitoring device Methods 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a temperature control device of an inversion output transformer of an EPS system, which comprises a temperature display and control instrument, an RTD temperature measuring probe and a fan; the temperature display and control instrument comprises a plurality of wiring terminals, wherein the wiring terminals comprise a power supply terminal, a relay terminal and a temperature measuring resistor connecting terminal; the temperature obtained through RTD measurement is transmitted to a temperature display and control instrument serving as a transformer temperature monitoring device, the transformer temperature is displayed in real time, and after the transformer temperature exceeds a certain value, the temperature display and control instrument acts on linkage fan equipment to perform forced heat dissipation, and the linkage EPS host machine is stopped and inverted to output. This patent can realize the real-time supervision of transformer temperature when EPS system is normal or emergent output, can realize the temperature rise control of transformer simultaneously. The user can set the temperature point by oneself according to the operational characteristics of different transformers, can effectively reduce the influence of temperature to the transformer, reduce the transformer fault rate, improve the operational reliability of EPS system.
Description
Technical Field
The utility model belongs to the technical field of temperature measurement devices, and particularly relates to a temperature control device for an inversion output transformer of an EPS system.
Background
The EPS system aims to solve the primary load power supply equipment such as emergency lighting, accident lighting, fire-fighting facilities and the like, and provides an emergency power supply system with an independent loop, which accords with fire-fighting regulations, for example, the EPS system of a large hydropower station is mainly used for emergency lighting. The emergency power supply system can provide emergency power supply in an emergency state, and the capacity of the EPS emergency power supply system is required to ensure the power consumption requirement of 90 minutes of load operation of accident lighting equipment. However, when the power station EPS system outputs in an emergency, the operation of the three-phase current is unbalanced along with the increase of the inversion time, the operation temperature of the inversion output transformer of the EPS system is higher, the highest temperature reaches 118 ℃, if the inversion is not stopped, the temperature of the transformer is continuously increased, the insulation of the transformer body is directly affected, and the service life of the transformer is shortened. Meanwhile, the temperature of the transformer is increased, so that the overall temperature in the main cabinet is increased, safety risks are caused to secondary components in the main cabinet, and potential safety hazards are left; therefore, there is a need to design an EPS system inverter output transformer temperature control device to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a temperature control device for an inversion output transformer of an EPS system, which solves the problem that the temperature of the transformer is continuously increased when the prior EPS system outputs an emergency, and has the characteristics of real-time temperature measurement and automatic heat dissipation of any point on the transformer.
In order to achieve the technical effects, the technical scheme adopted by the utility model is as follows: the temperature control device of the inversion output transformer of the EPS system comprises a temperature display and control instrument, an RTD temperature measuring probe and a fan; the temperature display and control instrument comprises a plurality of wiring terminals, wherein the wiring terminals comprise a power supply terminal, a relay terminal and a temperature measuring resistor connecting terminal.
Preferably, the RTD temperature measuring probe is electrically connected with the temperature measuring resistor connecting terminal through a three-wire system connection method.
Preferably, the RTD temperature measuring probe is placed at a temperature measuring point of the transformer to be measured and is fixed through bolting or binding by a binding belt.
Preferably, the power terminal outputs a 24VDC power supply; the relay terminals include a plurality of pairs of relay terminals, each pair of relay terminals including a normally open node and a normally closed node.
Preferably, the fan is electrically connected with an external 220V power supply through a cable, and the cable is electrically connected with the relay terminal to form an on-off control loop.
Further, the fan is fixed near the transformer, and the air inlet end faces the transformer and is used for pumping and exhausting heat generated by the transformer.
The temperature control device for the inversion output transformer of the EPS system has the following beneficial effects:
the device directly measures the temperature of the transformer winding through a contact RTD temperature measuring probe arranged on the transformer winding, the temperature obtained by RTD measurement is transmitted to a temperature display and control instrument serving as a transformer temperature monitoring device, the temperature of the transformer is displayed in real time, after the temperature of the transformer exceeds a certain value, the temperature display and control instrument acts on linkage fan equipment to perform forced heat dissipation, and the linkage EPS host machine stops and inverts and outputs. This patent can realize the real-time supervision of transformer temperature when EPS system is normal or emergent output, can realize the temperature rise control of transformer simultaneously. The user can set the temperature point by oneself according to the operational characteristics of different transformers, can effectively reduce the influence of temperature to the transformer, reduce the transformer fault rate, improve the operational reliability of EPS system.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure: a temperature display controller 3, an RTD temperature measuring probe 4, a fan 5 and a transformer 6;
the terminal marks at the back of the temperature display and control instrument are 1-28; the arrow direction in the figure is the direction of heat dissipation air flow.
Detailed Description
As shown in fig. 1, an EPS system inverter output transformer temperature control device includes a temperature display controller 3, an RTD temperature measuring probe 4 and a fan 5; the temperature display and control instrument 3 comprises a plurality of wiring terminals, including a power supply terminal, a relay terminal and a temperature measuring resistor connecting terminal.
Preferably, the RTD temperature measuring probe 4 is electrically connected with the temperature measuring resistor connecting terminal through a three-wire connection method.
Preferably, the RTD temperature measuring probe 4 is placed at a temperature measuring point of the transformer 6 to be measured and is fixed by bolting or binding.
Preferably, the power terminal outputs a 24VDC power supply; the relay terminals include a plurality of pairs of relay terminals, each pair of relay terminals including a normally open node and a normally closed node.
Preferably, the fan 5 is electrically connected with an external 220V power supply through a cable, and the cable is electrically connected with the relay terminal to form an on-off control loop.
Further, the fan 5 is fixed near the transformer, and the air inlet end faces the transformer 6 for exhausting heat generated by the transformer 6.
Further, the temperature display and control instrument 3 is provided with 28 wiring terminals, wherein the 1 wiring terminal and the 3 wiring terminal of the temperature display and control instrument are power terminals of the temperature display and control instrument, and the power supply is 24VDC; 17. 18, 19,20, 21, 22, 23, 24, 25,26, 27 and 28 respectively correspond to 4 pairs of normally open and normally closed nodes of the temperature display and control instrument, and the functions of the nodes are equivalent to 4 relays; 11. 15 and 16 are connected with PT100 temperature measuring resistors; when the temperature display and control instrument is connected, attention is paid to preventing the rear terminal of the temperature display and control instrument from being short-circuited.
Furthermore, because the RTD temperature measurement probe 4 is a contact type resistor, the RTD temperature measurement probe can be directly placed at a place needing temperature measurement, and the temperature measurement probe is marked at the position of an A-phase iron core shell of the transformer 6 in the figure, so that a user can place the temperature measurement resistor according to the requirement; because of the different loads of the phases of the transformer 6, the problem of unbalanced three-phase current exists, and the temperature measuring resistor is recommended to be placed in the phase with the largest current.
Further, in fig. 1, only the normally closed nodes of 17, 18, 19, 17 and 19 of the temperature display and control instrument 3 are used as the over-temperature alarm output terminals (normally closed) of the temperature controller and are connected in series to the action coil loop of the over-discharge protection contactor KM 3; 17. and 18 is a normally open node, and the relay is closed after the temperature reaches a set value, so that the fan 5 is put into operation.
The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (3)
1. An EPS system contravariant output transformer temperature control device, its characterized in that: comprises a temperature display and control instrument (3), an RTD temperature measuring probe (4) and a fan (5); the temperature display and control instrument (3) comprises a plurality of wiring terminals, wherein the wiring terminals comprise a power supply terminal, a relay terminal and a temperature measuring resistor connecting terminal; the RTD temperature measuring probe (4) is electrically connected with the temperature measuring resistor connecting terminal through a three-wire system connection method; the RTD temperature measuring probe (4) is placed at a temperature measuring point of the transformer (6) to be measured and is fixedly bound through a bolt connection or a binding belt, the fan is fixed near the transformer, and the air inlet end faces the transformer.
2. The EPS system inverter output transformer temperature control device according to claim 1, characterized in that: the power terminal outputs a 24VDC power supply; the relay terminals include a plurality of pairs of relay terminals, each pair of relay terminals including a normally open node and a normally closed node.
3. The EPS system inverter output transformer temperature control device according to claim 1, characterized in that: the fan (5) is electrically connected with an external 220V power supply through a cable, and the cable is electrically connected with the relay terminal to form an on-off control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223571683.5U CN219916231U (en) | 2022-12-31 | 2022-12-31 | EPS system inversion output transformer temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223571683.5U CN219916231U (en) | 2022-12-31 | 2022-12-31 | EPS system inversion output transformer temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219916231U true CN219916231U (en) | 2023-10-27 |
Family
ID=88423698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223571683.5U Active CN219916231U (en) | 2022-12-31 | 2022-12-31 | EPS system inversion output transformer temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219916231U (en) |
-
2022
- 2022-12-31 CN CN202223571683.5U patent/CN219916231U/en active Active
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