CN207038270U - Generator excited system open loop low current experiment loading resistor - Google Patents
Generator excited system open loop low current experiment loading resistor Download PDFInfo
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- CN207038270U CN207038270U CN201720910032.4U CN201720910032U CN207038270U CN 207038270 U CN207038270 U CN 207038270U CN 201720910032 U CN201720910032 U CN 201720910032U CN 207038270 U CN207038270 U CN 207038270U
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- Prior art keywords
- open loop
- low current
- radiator fan
- wire
- resistor
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Abstract
The utility model discloses a kind of generator excited system open loop low current experiment loading resistor, the loading resistor includes a heat insulation bottom board and the wire wound resistor and radiator fan that are installed on heat insulation bottom board, wire wound resistor is fixed on above heat insulation bottom board, including bakelite skeleton and resistance wire, the resistance wire is wound on bakelite skeleton, resistance wire both ends have lead-out wire, and radiator fan is fixed on heat insulation bottom board.The advantages of this is new is：The convenience and security of generator excited system open loop low current experiment are substantially increased, while resistance temperature rise is small, itself is non-aging, service life length.
Description
Technical field
The utility model is electric field, is related to generator excited system field, specially a kind of generator excited system
Open loop low current experiment loading resistor.
Background technology
, it is necessary to open loop low current load test be carried out, to verify excitation system when generator excited system replacing or overhaul
Each part whether normal work, the phase sequence and phase of such as synchrotrans, the trigger pulse of adjuster, controllable rectifier bridge device
It is whether normal.
Need to disconnect the degaussing switch of excitation system before the experiment of open loop low current, three-phase alternating current is passed through in rectifier bridge AC
Electricity.To ensure safety, three-phase alternating current is adjusted with pressure regulator to 200V or so.Rectifier bridge DC output side both positive and negative polarity it
Between, single-phase it is spaced apart access load resistance by one.During experiment, rectification circuit is adjusted by automatic voltage regulator (AVR)
Trigger Angle, and 6 road pulse triggering signals are exported, control the output voltage of rectifier bridge.Observe the voltage magnitude at load resistance both ends
It is whether consistent with expection with waveform, to judge the AVR modules of excitation system, signal synchronization unit, pulse-triggered unit, rectifier bridge
Deng whether normal.
According to test requirements document, load resistance typically require resistance in 100 Ω between 200 Ω, power requirement 400W with
On.At present when carrying out experiment, typically concatenated by the use of several electric furnace heating wires as experiment load resistance, such a process increases examination
Test the workload of personnel's wiring.Meanwhile easily it wiring error or adjacent wires short circuit is in the presence of, the quality of electric furnace heating wire obtains not
To guarantee, the risk of experiment is added.In addition, the electric furnace heating wire fever phenomenon in load condition is serious for a long time, it is easily molten
It is disconnected.In addition, do not allow typically to reuse because heat condition is serious after electric furnace heating wire typically use once, therefore experiment every time
When be required for new electric furnace heating wire, give test tape to carry out many inconvenience, protrude the shortcomings of waste of materials.
Utility model content
Technical problem to be solved in the utility model is to be directed to the above-mentioned state of the art, and provides a kind of reduction testing crew
The workload of wiring and the generator excited system open loop low current experiment loading resistor for lifting the quality of resistance.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of generator excited system open loop is small
Current testing loading resistor, the loading resistor include a heat insulation bottom board and the coiling being installed on heat insulation bottom board
Resistor and at least one radiator fan, the wire wound resistor is fixed on above heat insulation bottom board, including bakelite skeleton and electricity
Silk is hindered, the resistance wire is wound on bakelite skeleton, and resistance wire both ends have lead-out wire, and radiator fan is fixed on heat insulation bottom board
On.
Optimization, wire wound resistor outer layer applies one layer of insulation glaze.
Optimization, the radiator fan is erect installed in the side of wire wound resistor side by side.
Optimization, the radiator fan has two, and respectively the first radiator fan and the second radiator fan, setting are installed
In the side of wire wound resistor.
Optimization, the resistance wire is manganese copper alloy material.
Optimization, the heat insulation bottom board electricity consumption it is wooden into.
Optimization, the radiator fan is powered with single phase ac 220V power supplys, rated power 38W.
This new beneficial effect：1st, this new resistance wire using manganese copper alloy material turns to resistor substitution electric furnace
Silk concatenation is used as experiment load resistance, and with high specific resistance, heat endurance is good, temperature coefficient is small, and power is big, it is big to bear
The advantages of power load.
2nd, this it is new resistor outer layer apply one layer insulation glaze, one side protective resistance silk, so as not to by air oxidation, by
Tide etc. influences and causes the insulation characterisitic of resistance turn-to-turn to be deteriorated, and on the other hand resistor is possessed more preferable heat dispersion, resistance to
High-temperature behavior is more preferable.
3rd, this new heat accumulation that two radiator fans of installation are erect in resistor side, can effectively reduce resistor,
The normal load time, resistor temperature can be maintained within 70 DEG C in 1 hour.Resistance fusing, circle are so on the one hand prevented
Between insulate the risk of reduction, while resistance wire extends the life-span of resistor body in itself substantially without aging.
4th, this new global design substantially increases the convenience and peace of generator excited system open loop low current experiment
Quan Xing, while resistance temperature rise is small, itself is non-aging, service life length, power plant and scientific research institutions can be facilitated to carry out this experiment.
Brief description of the drawings
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the utility model structure arrangement schematic diagram.
Fig. 2 is the utility model wire wound resistor mounting arrangements schematic diagram.
Fig. 3 is the utility model radiator fan mounting arrangements schematic diagram.
In figure：1- radiating bottom plates, 2- wire wound resistors, the radiator fans of 3- first, the radiator fans of 4- second, 5- resistance wires,
6- bakelite skeletons.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of generator excited system open loop low current experiment loading resistor, the loading resistor
Including a heat insulation bottom board 1 and the wire wound resistor and radiator fan that are installed on heat insulation bottom board 1.
The electricity consumption of heat insulation bottom board 1 it is wooden into.
The wire wound resistor is fixed on the top of heat insulation bottom board 1, including bakelite skeleton 2 and resistance wire 5, the resistance wire
5 are wound on bakelite skeleton 2, and the both ends of resistance wire 5 have lead-out wire 6.
The radiator fan has two, respectively the first radiator fan 3 and the second radiator fan 4, the first radiator fan 3
Erect with the second radiator fan 4 installed in the side of wire wound resistor 2；Optimization, the first radiator fan 3 and the second radiator fan
4 erect the side for being arranged on wire wound resistor 2 side by side, and described two radiator fans are each attached on heat insulation bottom board 1.
Resistance wire 5 is manganese copper alloy material, and manganin has advantages below：High specific resistance, heat endurance are good, temperature system
Number is small, and power is big, can bear high-power load.By applying one layer of insulation glaze in wire wound resistor outer layer, electricity is on the one hand protected
Hinder silk 5, in order to avoid by air oxidation, making moist etc. influences and causes the insulation characterisitic of resistance turn-to-turn to be deteriorated, another aspect also make around
Line resistor possesses more preferable heat dispersion, and resistance to elevated temperatures is more preferable.One layer of heat insulation bottom board 1 is fixed below wire wound resistor, every
The hot electricity consumption of bottom plate 1 is wooden high into, good insulation preformance, high temperature resistant, intensity, can play a part of insulation against ground, at the same play every
Heat effect, prevent wire wound resistor body from crossing fire damage floor.
During experiment, because wire wound resistor is in load condition for a long time, and power is larger, inevitably, around
Line resistor body self-heating cooking situation is more serious.To avoid the temperature of wire wound resistor from producing heat with the extension of load time
Accumulation, two radiator fans of installation are erect with side, can effectively reduce the heat accumulation of resistor, the normal load time is small 1
When it is interior, resistor temperature can be maintained within 70 DEG C.So on the one hand prevent resistance fusing, the risk that turn-to-turn insulation reduces,
Resistance wire extends the life-span of resistor body in itself substantially without aging simultaneously.
Above content is only to the utility model example and explanation, affiliated those skilled in the art couple
Described specific embodiment is made various modifications or supplement or substituted using similar mode, without departing from practical new
The design of type surmounts scope defined in the claims, all should belong to the scope of protection of the utility model.
Claims (7)
- A kind of 1. generator excited system open loop low current experiment loading resistor, it is characterised in that the loading resistor Including a heat insulation bottom board and the wire wound resistor being installed on heat insulation bottom board and at least one radiator fan, the coiling electricity Resistance device is fixed on above heat insulation bottom board, including bakelite skeleton and resistance wire, the resistance wire are wound on bakelite skeleton, resistance Silk both ends have lead-out wire, and radiator fan is fixed on heat insulation bottom board.
- 2. generator excited system open loop low current experiment loading resistor according to claim 1, it is characterised in that Wire wound resistor outer layer applies one layer of insulation glaze.
- 3. generator excited system open loop low current experiment loading resistor according to claim 1, it is characterised in that The radiator fan is erect installed in the side of wire wound resistor side by side.
- 4. generator excited system open loop low current experiment loading resistor according to claim 1, it is characterised in that The radiator fan has two, and respectively the first radiator fan and the second radiator fan, setting are arranged on wire wound resistor Side.
- 5. generator excited system open loop low current experiment loading resistor according to claim 1, it is characterised in that The resistance wire is manganese copper alloy material.
- 6. generator excited system open loop low current experiment loading resistor according to claim 1, it is characterised in that The heat insulation bottom board electricity consumption it is wooden into.
- 7. generator excited system open loop low current experiment loading resistor according to claim 1, it is characterised in that The radiator fan is powered with single phase ac 220V power supplys, rated power 38W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720910032.4U CN207038270U (en) | 2017-07-25 | 2017-07-25 | Generator excited system open loop low current experiment loading resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720910032.4U CN207038270U (en) | 2017-07-25 | 2017-07-25 | Generator excited system open loop low current experiment loading resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207038270U true CN207038270U (en) | 2018-02-23 |
Family
ID=61462636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720910032.4U Expired - Fee Related CN207038270U (en) | 2017-07-25 | 2017-07-25 | Generator excited system open loop low current experiment loading resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207038270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924792A (en) * | 2021-02-01 | 2021-06-08 | 中国葛洲坝集团机电建设有限公司 | Small load analysis device and method |
-
2017
- 2017-07-25 CN CN201720910032.4U patent/CN207038270U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924792A (en) * | 2021-02-01 | 2021-06-08 | 中国葛洲坝集团机电建设有限公司 | Small load analysis device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20180725 |