CN202712059U - Contactor for switching on internal combustion locomotive exciter circuit - Google Patents
Contactor for switching on internal combustion locomotive exciter circuit Download PDFInfo
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- CN202712059U CN202712059U CN 201220124436 CN201220124436U CN202712059U CN 202712059 U CN202712059 U CN 202712059U CN 201220124436 CN201220124436 CN 201220124436 CN 201220124436 U CN201220124436 U CN 201220124436U CN 202712059 U CN202712059 U CN 202712059U
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- contactor
- locomotive
- auxiliary relay
- triggering
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Abstract
The utility model relates to a contactor for switching on an internal combustion locomotive exciter circuit, which employs high power rectification components such as silicon controlled rectifier, IGBT, etc., to replace an electromagnetic contactor to form an electronic switch. The contact is formed by a silicon controlled rectifier, an intermediate relay and a diverter switch, comprises a control circuit, a triggering circuit and an exciter circuit, and is provided with the function of switching on the exciter circuit of a locomotive. The contactor is characterized in that the control circuit is formed by a diverter switch, an intermediate relay coil and an intermediate relay interlocking contact, and the triggering circuit is formed by an intermediate relay circuit interlocking contact and a silicon controlled rectifier triggering pole. The contactor employs such rectification components having the advantages of being long in service life and high in work reliability, being free of maintenance, and being low in energy consumption, etc., can overcome the defect of the prior electromagnetic contactor, and is used for the most important portion of the locomotive, thereby greatly increasing the reliability of locomotive application.
Description
Technical field
The utility model relate to a kind ofly connect, the contactor of the load of the various general capacity of disjunction, especially a kind of contactor of realizing the diesel locomotive excitation circuit turn-on can be applicable in the control circuit of railway locomotive, plant equipment, large-scale power switch etc.
Background technology
The diesel locomotive most common failure has that the leakage of oil of internal combustion engine own is leaked, mechanical driving device and electric fault etc., wherein owing to electric fault causes just accounting for more than 80% of accident of locomotive defect, and the fault of excitation contactor cisco unity malfunction accounts for more than 40% of electric fault.These faults can cause locomotive normally not move, thereby affect safety and the economic loss of whole rail transportation system.
What in the prior art, safeguard of main engine of combustion engine excitation contactor (circuit diagram code name LC) adopted usually is electromagnetic treadle.The electromagnetic contactor of prior art is grouped into by contact part, electromagnetic mechanism and mechanical drive department.In actual applications can be owing to relying on machinery and electromagnetic action to produce the shortcomings such as scaling loss, adhesive are unreal, power consumption, faults frequent.
Referring to Fig. 1, the electromagnetic contactor operation principle is as described below.
Wherein A is the pull-in winding of electromagnetic contactor, and B is hold-in winding, and CB is normally closed interlocking switch.Under the state that needs launch train (namely without electricity), CB is closed.When train need to start, the loop got electric, the electromagnetic contactor adhesive, and CB disconnects, and pull-in winding A connects with hold-in winding B, namely reaches the normal operating conditions of launch train.But when normally closed interlocking switch CB breaks down and can not normally disconnect the time, just makes pull-in winding A electricly long-term, cause easily over-heated fault.Namely, in actual motion, the locomotive failure reason is that the anti-locking contact of electromagnetic contactor itself can't disconnect after the electromagnetic contactor adhesive, causes pull-in winding A long-term work, and hold-in winding B can't devote oneself to work, cause at last the main coil scaling loss, electromagnetic contactor can't adhesive, and this class fault also can cause even more serious consequence, the locomotive control circuit tripping operation of threading off, so that locomotive can't commutate, cause larger fault coverage.The LC emergency trip even manually close this moment, locomotive still can't normally move.
Mainly there is following several shortcoming at work in electromagnetic contactor of the prior art.
First, safeguard of main engine of combustion engine electromagnetic contactor work under bad environment, frequent movement is in operation, main noddle on contactor is arcing burn when disconnecting very easily, will produce again the problems such as loose contact, contact are overheated, surperficial severe oxidation next time during adhesive, cause at last field circuit to work.
Second, in locomotive LC control loop, string has 1C-6C main contactor Chang Kailian lock contact, 1-3ZJ, 7ZJ, the normally closed locking contact of LJ, DJ before the LC contactor pull-in winding, produce easily very large contact resistance after these contact series connection, produce very large pressure drop, make the LC coil can not reach operating value, causing can not adhesive or the phenomenon such as adhesive is unreal.
The 3rd, the wearing and tearing of mechanical device cause catching phenomenon, the main contact adhesive can not be put in place, although extinguishing, the no-load lamp (namely indicates the main generator generating, train has reached starting state and can start to walk), but in fact do not form energized circuit, main generator can't generate electricity, and has also increased the difficulty that fault is got rid of.
The 4th, the scaling loss short circuit of solenoid own also can have influence on the normal operation of other circuit, fault coverage is further enlarged cause larger loss.
The 5th, electromagnetic contactor is comprised of solenoid, mechanical driving device, main contact, locking contact etc., and its break-make can produce electromagnetic interference, and main contact and locking contact act frequently, and shortcoming is that useful life is low, and maintenance cost is high, poor reliability.
In view of above shortcoming, the utility model proposes a kind of contactor that can realize the diesel locomotive excitation circuit turn-on.
Summary of the invention
In order to overcome above-mentioned shortcoming, the utility model has adopted high-power rectification component such as controllable silicon, igbt (IGBT) etc. to substitute electromagnetic contactor and has formed electronic switch, and this type of rectifier cell does not have solenoid, and it is extremely low to consume energy; Can not produce electromagnetic interference; Can realize cut-offfing without arc of contact, the life-span is long, and functional reliability is high, and is non-maintaining, the cost that uses manpower and material resources sparingly, and do not produce mechanical energy consumption.It has overcome the shortcoming of electromagnetic treadle, is used for the most important position of locomotive, has greatly improved the reliability of locomotive operation.
The technical solution of the utility model is: a kind of contactor of realizing the diesel locomotive excitation circuit turn-on, comprise controllable silicon, auxiliary relay and change over switch, formation control circuit and circuits for triggering and field circuit in this contactor, it is characterized in that, control circuit is comprised of change over switch, auxiliary relay coil and auxiliary relay locking contact, and circuits for triggering are comprised of auxiliary relay locking contact and controllable silicon trigger electrode.
Description of drawings
Fig. 1 is the fundamental diagram of existing electromagnetic contactor.
Fig. 2 is the circuit diagram that gets circuit of the LC coil of the electromagnetic contactor in the existing locomotive primary circuit.
Fig. 3 is the circuit diagram of the on-off switch of the electromagnetic contactor in the existing locomotive primary circuit.
Fig. 4 is the circuit diagram of the locomotive mule carriage control circuit in the existing locomotive primary circuit.
Fig. 5 be in the existing locomotive primary circuit for the field circuit working state indicating circuit.
Fig. 6 is the circuit diagram of the selection control circuit that LC coil and auxiliary relay coil ZJ consist of in the utility model.
Fig. 7-9 is the control circuit identical with existing locomotive primary circuit principle.
Figure 10 is the circuit diagram of rectifier cell circuits for triggering in the locomotive circuit of the present utility model.
Embodiment
Take diesel locomotive as example, referring to the locomotive primary circuit of Fig. 2-5, wherein, Fig. 2 is that the LC coil gets circuit, and Fig. 3 is the on-off switch circuit of field circuit, and Fig. 4 is locomotive mule carriage control protection electric circuit, and Fig. 5 is the field circuit working state indicating circuit.Fig. 6-10 is for comprising locomotive circuit figure of the present utility model.
Fig. 6 is the control circuit that LC coil and auxiliary relay coil ZJ consist of.Wherein the LC coil is in parallel with auxiliary relay coil ZJ, and is connected on No. 538 lines by change over switch.Fig. 7-9 is the control circuit identical with Fig. 2 principle, and Figure 10 is the rectifier cell circuits for triggering.The application's contactor comprises controllable silicon, auxiliary relay and change over switch, formation control circuit, circuits for triggering and field circuit in this contactor, three's working power provides by locomotive, wherein control circuit is comprised of change over switch, auxiliary relay coil and auxiliary relay locking contact, and circuits for triggering are comprised of auxiliary relay locking contact and controllable silicon trigger electrode.Three partial circuits form fixing logical relation by the coupling method of design, can satisfy the needs that locomotive starts and unloads.Power supply gets electric through the switch of walking around by the auxiliary relay coil.The auxiliary relay adhesive makes each contact closure realize Trigger Function.It is electric that electrical locomotive power gets the controllable silicon trigger electrode by the auxiliary relay interlocking contact.When using the utility model, the two positions change over switch is placed " 2 " position, auxiliary relay is started working, and positive interlocking contact is closed, connects circuits for triggering, controllable silicon anode and negative electrode conducting, field circuit is started working, and locomotive can start.
It is in parallel that the contactor that controllable silicon forms in the present embodiment and existing electromagnetic contactor in the locomotive unit circuit form, when needs work, two overlap contactors by change over switch choose the two one of operate the conducting that realizes field circuit.
On the basis of the locomotive primary circuit of Fig. 2-Fig. 5, can obtain with reference to the preferred operations of following operation the circuit of Fig. 6-Figure 10:
1) No. 620 lines of LC coil is taken off, receive on the X12/12;
2) upper No. 538 lines of X12/12 are taken off, between No. 538 lines and X12/12, install a two position switch additional;
3) draw a wire from contact, change over switch another location and receive auxiliary relay (installing additional) anode, negative terminal is drawn wire and is received the LC negative terminal;
4) LC main contact 94 (+), 92 (-) line are received respectively on silicon controlled anode and the negative electrode;
5) with the positive locking contact of LC by wire and receive on the corresponding interlocking of auxiliary relay;
6) draw a 3V power supply from locomotive storage batteries and receive on auxiliary relay just interlocking, draw a negative wire from disconnecting link and receive another and just interlocking upper as triggering power supply.
The controllable silicon parameter of concrete device can with reference to such as following table 1, still be not limited to this, as long as also can select other parameter and substitute thereof in allowed limits.
Table 1 controllable silicon parameter
| Project | Parameter |
| On-state average current ITAY | 1800A |
| Off-state great blessing crest voltage UDRM | 3000V |
| Repetitive peak electric current I RRM repeatedly | ≤300mA |
| Gate trigger current Ig | 40-180mA |
| Surge on state current IGSM | 3300A |
Circuit of the present utility model meets the locomotive property indices fully through performance of locomotive test.Implementation is simple and reliable, has improved largely the reliability of locomotive operation, and has reduced the cost of regular maintenance.Can all can utilize condition to install additional in locomotive shop, locomotive depot etc.This installs additional in the control circuits such as the diesel locomotive that is applicable to different model and plant equipment, large-scale power switch, has good social benefit.
Other execution mode
Above-mentioned for adopting the circuit that installs additional of controllable silicon composition, do not remove the use of excitation contactor of the prior art.But existing electromagnetic contactor is namely removed in the use that also can replace with the utility model the existing electromagnetic contactor in the locomotive primary circuit fully in the circuit, and the change over switch among Fig. 6-Figure 10 just can omit simultaneously.
Adopt high-power half control type controllable silicon as rectifier cell in the present embodiment, but also can adopt the components and parts of the same effects of realization such as full-control type rectifier cell such as IGBT and combination thereof to replace.
As everyone knows, above-mentioned specific embodiment and accompanying drawing and explanation only are intended to allow those skilled in the art understand better the utility model, and lie in the utility model are not confined to this.Those skilled in the art can make up under the prerequisite that does not break away from the utility model scope, substitutions and modifications, and make up, substitutions and modifications are construed as in the utility model scope that is defined by appended claims.
Claims (5)
1. contactor of realizing the diesel locomotive excitation circuit turn-on, comprise controllable silicon, auxiliary relay and change over switch, formation control circuit and circuits for triggering and field circuit in this contactor, it is characterized in that, control circuit is comprised of change over switch, auxiliary relay coil and auxiliary relay locking contact, and circuits for triggering are comprised of auxiliary relay locking contact and controllable silicon trigger electrode.
2. a kind of contactor of realizing the diesel locomotive excitation circuit turn-on as claimed in claim 1, the working power that it is characterized in that described control circuit, circuits for triggering, field circuit provides by locomotive, and these three circuit form the fixing logical relation of the needs that can satisfy locomotive startup and unloading by the coupling method of design.
3. a kind of contactor of realizing the diesel locomotive excitation circuit turn-on as claimed in claim 1, it is characterized in that, in described control circuit, power supply gets electric by the auxiliary relay coil through change over switch, and the auxiliary relay adhesive makes each contact closure realize Trigger Function.
4. a kind of contactor of realizing the diesel locomotive excitation circuit turn-on as claimed in claim 1 is characterized in that, in described circuits for triggering, it is electric that electrical locomotive power gets the controllable silicon trigger electrode by the auxiliary relay interlocking contact.
5. a kind of contactor of realizing the diesel locomotive excitation circuit turn-on as claimed in claim 1 is characterized in that, in described field circuit, when described control circuit and circuits for triggering after hours, controllable silicon anode and negative electrode conducting, field circuit is started working, and locomotive starts thus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220124436 CN202712059U (en) | 2012-03-29 | 2012-03-29 | Contactor for switching on internal combustion locomotive exciter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220124436 CN202712059U (en) | 2012-03-29 | 2012-03-29 | Contactor for switching on internal combustion locomotive exciter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712059U true CN202712059U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220124436 Expired - Fee Related CN202712059U (en) | 2012-03-29 | 2012-03-29 | Contactor for switching on internal combustion locomotive exciter circuit |
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| Country | Link |
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| CN (1) | CN202712059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570880A (en) * | 2015-01-21 | 2015-04-29 | 南车成都机车车辆有限公司 | Internal combustion locomotive fault loading device |
-
2012
- 2012-03-29 CN CN 201220124436 patent/CN202712059U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570880A (en) * | 2015-01-21 | 2015-04-29 | 南车成都机车车辆有限公司 | Internal combustion locomotive fault loading device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20160329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |