CN206135403U - Gas turbine current limit device and gas turbine starting system - Google Patents
Gas turbine current limit device and gas turbine starting system Download PDFInfo
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- CN206135403U CN206135403U CN201621099215.4U CN201621099215U CN206135403U CN 206135403 U CN206135403 U CN 206135403U CN 201621099215 U CN201621099215 U CN 201621099215U CN 206135403 U CN206135403 U CN 206135403U
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Abstract
The utility model discloses a gas turbine current limit device and gas turbine starting system, this gas turbine current limit device include current -limiting resistor, and the connection is between external power supply and starter motor for restriction starter motor plays the loop current of measured time, and external power supply, current -limiting resistor and starter motor contact in proper order and constitute gas turbine and start the return circuit, timing circuit links to each other with external power supply for the operating voltage that output external power supply provided in the time of setting for, the contactor links to each other with timing circuit and current -limiting resistor, and the contactor includes coil and contact, and the contact cross -over connection is at current -limiting resistor's both ends for then begin the action in the time that timing circuit set for, the closing coil, the make contact, with the current -limiting resistor short circuit so that current -limiting resistor throw off from gas turbine starts the return circuit. The utility model discloses the circuit is simple, and the reliability is high, and can satisfy gas turbine starting system operational environment's operation requirement.
Description
Technical field
This utility model is related to gas turbine field, especially, is related to a kind of gas turbine current limiting device.Additionally,
This utility model further relates to a kind of gas turbine starting system including above-mentioned gas turbine current limiting device.
Background technology
Gas turbine starting system generally comprises starter box, starts critical piece and current limiting device and the temperature such as motor
The guard blocks such as degree limits device.In Study On Start-up Process For Gas Turbines, starter box produces start signal, makes starting electric motor starting wink
Between can produce big operating current, so as to shorten start motor life-span.To prevent starting electric motor starting immediate current excessive, combustion
Gas-turbine needs to configure current limiting device, to make starting motor short time in starting process that operating current is limited in into one
In fixed scope.From the prior art, common current inrush limiter or fault current limiter are used for network system,
Circuit and structure design are all more complicated, and due to power or level of security difference, so as to work with gas turbine starting system
Use environment is completely different, it is difficult to directly apply to gas turbine starting system.
Therefore, the design circuit of the current limiting device of gas turbine starting system is complicated, is one and urgently to be resolved hurrily asks
Topic.
Utility model content
This utility model purpose is to provide a kind of gas turbine current limiting device and gas turbine starting system, to solve
The certainly complicated technical problem of the circuit of the current limiting device of gas turbine starting system.
For achieving the above object, the technical solution adopted in the utility model is as follows：
This utility model provides a kind of gas turbine current limiting device, and gas turbine includes starter box and starts motor,
Gas turbine current limiting device includes：
Current-limiting resistance, is connected to external power supply and starts between motor, for limiting loop electricity when starting electric motor starting
Stream, external power supply, current-limiting resistance and starting motor are contacted constitute gas turbine start loop successively；
Timing circuit, is connected with external power supply and catalyst, provides for then exporting external power supply in the time of setting
Running voltage to catalyst；
Catalyst, is connected with timing circuit, and catalyst includes coil and contact, and contact is connected across the two ends of current-limiting resistance,
For then starting action in the time of timing circuit sets, closing coil closes contact, by current-limiting resistance short circuit so that current limliting
Resistance is disengaged from gas turbine start loop.
Further, gas turbine current limiting device, also includes：
Electric connector, is connected with external power supply and starter box, for being input into the running voltage of external power supply offer, electrical connection
Device includes the negative pole of the first connection end, the second connection end, the 3rd connection end and the 4th connection end, the first connection end and external power supply
Be connected, the second connection end is connected with the positive pole of external power supply, the 3rd connection end vacantly, the 4th connection end and starter box and contact phase
Even.
Further, timing circuit includes time-delay relay, and time-delay relay includes the contact of relay first, relay the
Two contacts and the contact of relay the 3rd, the contact of relay first and the contact of relay second constitute normally-closed contact, relay second
Contact and the contact of relay the 3rd constitute normally opened contact, and the contact of relay second is connected with external power supply, the contact of relay the 3rd
It is connected with catalyst.
Further, catalyst is direct solenoid catalyst open in usual, and catalyst includes the stationary contact of catalyst first, contact
The stationary contact of device second and catalyst movable contact, the stationary contact of catalyst first is connected with one end of current-limiting resistance, and catalyst second is quiet
Contact is connected with the other end of current-limiting resistance, and catalyst movable contact is connected with starter box.
Further, current-limiting resistance is resistant to elevated temperatures resistance alloys.
Further, the making material of current-limiting resistance is nichrome.
Further, gas turbine current limiting device, also includes：
Housing, housing is used to accommodate current-limiting resistance, timing circuit, catalyst and electric connector.
Further, housing is the metal shell of closing, offers on housing and corresponding with the interface of electric connector determines
Position hole.
Further, the outer surface of housing offers multiple louvres.
This utility model also provides a kind of gas turbine starting system, including above-mentioned gas turbine current limiting device.
This utility model has the advantages that：
The utility model proposes gas turbine current limiting device and gas turbine starting system, gas turbine start
When, current-limiting resistance is accessed in gas turbine start loop and carries out current-limiting protection；Current limliting electricity is not needed when gas turbine starts to finish
During resistance current-limiting protection, by timing circuit and catalyst, by current-limiting resistance shorted on both ends so that current-limiting resistance departs from gas turbine
Start loop, this utility model circuit is simple, and reliability is high, and the use of gas turbine starting system working environment can be met will
Ask.
In addition to objects, features and advantages described above, this utility model also has other purposes, feature and excellent
Point.Below with reference to figure, this utility model is described in further detail.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the functional block diagram of this utility model current limiting device preferred embodiment；
Fig. 2 is the schematic diagram of the function of this utility model current limiting device preferred embodiment；
Fig. 3 is the circuit diagram of this utility model current limiting device preferred embodiment；
Fig. 4 is schematic diagram movement time of time-delay relay in Fig. 1；
Fig. 5 is the structural front view of this utility model current limiting device preferred embodiment；
Fig. 6 is the structure top view of this utility model current limiting device preferred embodiment.
Accompanying drawing marks explanation：
10th, current-limiting resistance；20th, timing circuit；30th, catalyst；40th, electric connector；50th, housing；60th, external power supply；70、
Start motor；80th, starter box.
Specific embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but this utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of gas turbine current limiting device, gas turbine
Including starter box 80 and starting motor 70, current-limiting resistance 10, it is connected to external power supply 60 and starts between motor 70, for limiting
Loop current when motor 70 is started is started, external power supply 60, current-limiting resistance 10 and starting motor 70 are contacted constitute combustion gas successively
Turbine start loop；Timing circuit 20, is connected with external power supply 60 and catalyst 30, for then exporting outer in the time of setting
The running voltage of the offer of power supply 60 is connect to catalyst 30；Catalyst 30, is connected with timing circuit 20 and current-limiting resistance 10, catalyst
30 include coil and contact, and contact is connected across the two ends of current-limiting resistance 10, and the time for setting in timing circuit 20 then opens
Initiating is made, closing coil, closes contact, by the short circuit of current-limiting resistance 10 so that current-limiting resistance 10 takes off from gas turbine start loop
Open.In the present embodiment, catalyst 30 includes coil and contact, and the contact of catalyst 30 is connected across the two ends of current-limiting resistance 10,
When gas turbine is started and worked, the current-limiting resistance 10 in current limiting device accesses gas turbine start loop, increases combustion gas
Current-limiting resistance 10 in turbine start loop, limits the electric current in gas turbine start loop.When the work electricity of external power supply 60
When being input to timing circuit 20, timing circuit 20 starts timing to pressure, and the time threshold for reaching setting when the time of timing is (for example
3.6 seconds) when, running voltage is exported to catalyst 30, the beginning action of catalyst 30, the coil conducting of catalyst 30, catalyst
30 closing of contact makes the short circuit of current-limiting resistance 10 so that current-limiting resistance 10 is disengaged from gas turbine start loop.
The gas turbine current limiting device that the present embodiment is proposed, when gas turbine is started, current-limiting resistance accesses combustion gas
Current-limiting protection is carried out in turbine start loop；When gas turbine starting is finished does not need current-limiting resistance current-limiting protection, by fixed
When circuit and catalyst, by current-limiting resistance shorted on both ends so that current-limiting resistance departs from gas turbine start loop, this utility model
Circuit is simple, and reliability is high, and can meet the use requirement of gas turbine starting system working environment.
As depicted in figs. 1 and 2, the gas turbine current limiting device that the present embodiment is proposed, also including electric connector 40, with
External power supply 60 is connected with starter box 80, and for being input into the running voltage of the offer of external power supply 60, electric connector 40 includes first
Connection end, the second connection end, the 3rd connection end and the 4th connection end, the first connection end is connected with the negative pole GND of external power supply, the
Two connection ends are connected with the positive pole VDD of external power supply, and the 3rd connection end is hanging, the 4th connection end and starter box 80 and contact phase
Even.
The gas turbine current limiting device that the present embodiment is proposed, by the connected mode of electric connector, connected mode letter
Single, reliability is high, and can meet the use requirement of system context.
As shown in figure 3, the present embodiment propose gas turbine current limiting device, timing circuit 20 include time-delay relay
K2, time-delay relay K2 include the contact of relay first, the contact of relay second and the contact of relay the 3rd, and relay first is touched
Point and the contact of relay second constitute normally-closed contact, and the contact of relay second and the contact of relay the 3rd constitute normally opened contact, after
The contact of electrical equipment second is connected with external power supply 60, and the contact of relay the 3rd is connected with catalyst 30.When the offer of external power supply 60
When running voltage is input into time-delay relay K2, the contact of relay second and the closing of contact of relay the 3rd, time-delay relay K2
Running voltage is transferred to into catalyst 30, the beginning action of catalyst 30 takes off current-limiting resistance 10 from gas turbine start loop
Open.Wherein, time-delay relay K2 arranges suitable timing, then starts action in the stipulated time and is risen with controlling gas turbine
The break-make of the current-limiting resistance 10 in dynamic loop.Time-delay relay K2 serves as timing circuit, and contact load is 10A, 28V unidirectional currents,
Timing standard value is 3.6s, and timing accuracy is ± 2% (normal temperature and pressure) and ± 5% (under the environment such as high/low temperature), with timing
The features such as high precision, good environmental adaptability.The movement time (△ t) of time-delay relay K2 is that the coil of time-delay relay K2 is connected
External power supply 60 starts to the time difference between the action of contact, it is desirable to for 3.6s.As shown in figure 4, dynamic according to the contact of catalyst 30
Make mode, under conditions of the contact time of catalyst 30 is ignored, can connect conveniently by detection electric connector 40 second
Connect the signal time difference between end and the 4th the two connection ends of connection end to replace current-limiting resistance 10 to access gas turbine starting
Section action time in loop.
The gas turbine current limiting device that the present embodiment is proposed, by detecting that the connection end of electric connector second and the 4th connects
Connect and hold the signal time difference between the two connection ends to obtain the action time that current-limiting resistance accesses gas turbine start loop,
Detection is simple, and reliability is high.
As shown in figures 1 and 3, catalyst 30 (K1) is direct solenoid catalyst open in usual, and catalyst 30 (K1) includes connecing
The stationary contact of tentaculum first, the stationary contact of catalyst second and catalyst movable contact, the stationary contact of catalyst first and current-limiting resistance 10
One end is connected, and the stationary contact of catalyst second is connected with the other end of current-limiting resistance 10, and catalyst movable contact is connected with starter box 80.
In the present embodiment, catalyst 30 (K1) is direct solenoid catalyst open in usual, and maximum operating currenbt is 400A, peak point current
2000A (1 second time), cold start coil maximum current be 5A, under rated voltage peak coil current be 0.6A, contact resistance
≤ 0.001 Ω of value.When catalyst 30 coil connect external power supply 60 when, the first stationary contact of one side catalyst 30 (K1) and
Second stationary contact is connected so that current-limiting resistance 10 (R1) short circuit, the catalyst movable contact of another aspect catalyst 30 (K1) is ingenious
Ground is shorted to the first stationary contact and the second stationary contact with Reed interlocking, so as to the running voltage of external power supply 60 is exported to starting
Case 80, effect is to provide the signal that a current-limiting resistance 10 (R1) has disengaged for starter box 80.
The gas turbine current limiting device that the present embodiment is proposed, catalyst movable contact is connected with starter box, by current limliting
The signal transmission that resistance has been disengaged is to starter box, and circuit design is simple, and the reliability of signal transmission is high.
Preferably, current-limiting resistance 10 is resistant to elevated temperatures resistance alloys, and Internal current limit resistance 10 uses the thick nickel chromium triangles of 2mm
High-temperature alloy material, as shown in figure 3, being attached by fine copper lug plate between terminals E, terminals F and current-limiting resistance 10.
In the present embodiment, the material composition of current-limiting resistance 10 is mainly nickel (70%～80%) chromium (15%～20%) alloy, current limliting
The sectional dimension of resistance 10 is 2mm × 32mm, and length is 850mm.When gas turbine works, operating current reaches as high as 600A,
Can prevent current-limiting resistance 10 from deforming because temperature is too high using nickel chromium high-temperature alloy.
The gas turbine current limiting device that the present embodiment is proposed, the making material of current-limiting resistance is nichrome, can be prevented
Only current-limiting resistance deforms because temperature is too high.
As described in the fig 5 and 6, the gas turbine current limiting device that the present embodiment is proposed, also including housing 50, housing 50
For accommodating current-limiting resistance 10, timing circuit 20, catalyst 30 and electric connector 40.Housing 50 for closing metal shell, shell
The location hole corresponding with the interface of electric connector 40 is offered on body 50, the outer surface of housing 50 offers multiple louvres.
In the present embodiment, because product weight is limited, in order that product lighterization, the housing 50 of current limiting device adopts aluminum
Structure.It is the metal shell 50 of a closing outside current limiting device, the surface of housing 50 devises multiple louvres, to hold
The high temperature produced by the high current flow through during work and by high current.
The gas turbine current limiting device that the present embodiment is proposed, using the housing of aluminum design, makes product lighterization；
Multiple louvres are devised on the surface of housing to radiate current limiting device, improve product reliability.
Preferably, the present embodiment also provides a kind of gas turbine starting system, including above-mentioned gas turbine current limit
Device, will not be described here.
According to the utility model proposes Technical Design gas turbine current limiting device measured data out be：
Wherein time-delay relay timing actual measurement is 3.68s, meets the requirement of standard value 3.6s and precision, current-limiting resistance measured value
0.014 Ω, is that 0.014 Ω is consistent with theoretical resistance.Tested by the test run of current limiting device and gas turbine, it was demonstrated that electricity
Restriction means can accurately and effectively control at the appointed time starting current so as to which maximum is less than 600A (peak value), from
And reach expected design effect.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of gas turbine current limiting device, the gas turbine includes starter box and starts motor, it is characterised in that institute
Stating gas turbine current limiting device includes：
Current-limiting resistance (10), is connected between external power supply and the starting motor, for limiting during the starting electric motor starting
Loop current, the external power supply, the current-limiting resistance (10) and it is described starting motor contact successively composition gas turbine rise
Dynamic loop；
Timing circuit (20), is connected with the external power supply and catalyst (30), for then exporting described in the time of setting
The running voltage that external power supply is provided gives catalyst (30)；
Catalyst (30), is connected with the timing circuit (20), and the catalyst (30) includes coil and contact, the contact across
The two ends of current-limiting resistance (10) are connected on, the time for setting in the timing circuit (20) then starts action, connect described
Coil, closes the contact, by the current-limiting resistance (10) short circuit so that the current-limiting resistance (10) is from the gas turbine
Disengage in dynamic loop.
2. gas turbine current limiting device according to claim 1, it is characterised in that also include：
Electric connector (40), is connected with the external power supply and starter box, for being input into the work electricity that the external power supply is provided
Pressure, the electric connector (40) includes the first connection end, the second connection end, the 3rd connection end and the 4th connection end, described first
Connection end is connected with the negative pole of the external power supply, and second connection end is connected with the positive pole of the external power supply, and described
Three connection ends are hanging, and the 4th connection end is connected with the starter box and the contact.
3. gas turbine current limiting device according to claim 2, it is characterised in that
Including time-delay relay, the time-delay relay includes the contact of relay first, relay the to the timing circuit (20)
Two contacts and the contact of relay the 3rd, the contact of the relay first and the contact of the relay second constitute normally-closed contact, institute
State the contact of relay second and the contact of the relay the 3rd and constitute normally opened contact, the contact of the relay second is external with described
Power supply is connected, and the contact of the relay the 3rd is connected with the catalyst (30).
4. gas turbine current limiting device according to claim 2, it is characterised in that
The catalyst (30) is direct solenoid catalyst open in usual, the catalyst (30) including the stationary contact of catalyst first,
The stationary contact of catalyst second and catalyst movable contact, one end phase of the stationary contact of the catalyst first and the current-limiting resistance (10)
Even, the stationary contact of the catalyst second is connected with the other end of the current-limiting resistance (10), the catalyst movable contact with it is described
Starter box is connected.
5. gas turbine current limiting device according to claim 4, it is characterised in that
The current-limiting resistance (10) is resistant to elevated temperatures resistance alloys.
6. gas turbine current limiting device according to claim 5, it is characterised in that
The making material of the current-limiting resistance (10) is nichrome.
7. gas turbine current limiting device according to claim 6, it is characterised in that also include：
Housing (50), the housing (50) is for accommodating the current-limiting resistance (10), the timing circuit (20), the catalyst
And the electric connector (40) (30).
8. gas turbine current limiting device according to claim 7, it is characterised in that
The housing (50) is the metal shell of closing, and the interface with the electric connector (40) is offered on the housing (50)
Corresponding location hole.
9. gas turbine current limiting device according to claim 7, it is characterised in that
The outer surface of the housing (50) offers multiple louvres.
10. a kind of gas turbine starting system, it is characterised in that including combustion gas wheel as claimed in any one of claims 1-9 wherein
Electromechanical restriction means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621099215.4U CN206135403U (en) | 2016-09-30 | 2016-09-30 | Gas turbine current limit device and gas turbine starting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621099215.4U CN206135403U (en) | 2016-09-30 | 2016-09-30 | Gas turbine current limit device and gas turbine starting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135403U true CN206135403U (en) | 2017-04-26 |
Family
ID=58571795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621099215.4U Active CN206135403U (en) | 2016-09-30 | 2016-09-30 | Gas turbine current limit device and gas turbine starting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026389A (en) * | 2018-09-14 | 2018-12-18 | 青岛云深动力科技有限公司 | Gas turbine engine systems and its control method |
-
2016
- 2016-09-30 CN CN201621099215.4U patent/CN206135403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026389A (en) * | 2018-09-14 | 2018-12-18 | 青岛云深动力科技有限公司 | Gas turbine engine systems and its control method |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |